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Senior Design Report for ECE 477 – Spring 2004

1. Project Description Provide a brief one or two page technical description of the design project as outlined below a Summary of the project including customer purpose specifications and a summary of the approach The project is a game for musicians which interfaces with a MIDI keyboard to allow competition among the players This device has two modes of operation The first of these is a MIDI sequencing mode which allows 2 to 6 players to take turns building successively longer key sequences one note at a time In this mode a player is eliminated when he can no longer reproduce the sequence of the previous player The second mode of operation is slightly more advanced Each player must produce a melody and then each opponent is given a chance to try and match the melody and timing of the player s melody The game stores MIDI messages and their respective timing for the purpose of real time comparison Menu navigation is made possible with a control knob and LCD screen In game messages are played back to the users via a built in speaker To accomplish this components were first selected for each functional block Next these separate functional blocks were prototyped After the hardware was in place software was written to send receive and compare MIDI messages b Description of how the project built upon the knowledge and skills acquired in earlier ECE coursework Knowledge from ECE270 ECE362 and all high level programm
2. d Description of how the engineering design process was incorporated into the project Reference must be made to the following fundamental steps of the design process establishment of objectives and criteria analysis synthesis construction testing and evaluation Establishment of objectives and criteria was done before any initial design took place Once these were known analysis of the necessary parts was performed Synthesis was then performed with the heart rate receiver and the LCD screen as well some software modules The hardware was constructed and tested block by block The main software module was implemented using a bottom up technique Basic routines and functions were created and tested before adding them to the main code itself Using this method the main code module required less debugging The success criteria were demonstrated and evaluated in simulation e Summary of how realistic design constraints were incorporated into the project consideration of most of the following is required economic environmental ethical health amp safety social political sustainability and manufacturability constraints Economic constraints were displayed by buying all of the parts ourselves and realizing just how much the device would cost The velcro straps on both the wrist and shoulder units were tested to make sure the unit wouldn t become disconnected from the user during a workout Political constraints were demonstrat
3. Design Project Of utmost importance in the real world is the ability to document and present technical information in a clear organized succinct and well illustrated fashion In microprocessor based designs the ability to integrate hardware and software is a fundamental skill that should be possessed by all Computer Engineering graduates The design project formal written report and videotaped presentation will give each student in this course the opportunity to develop these skills Students will work on their design in teams of four Lab Notebook Developing good design documentation skills is an important part of this course A significant part of your grade 10 will be based on the individual lab notebook you maintain throughout the design and development process Weekly Meetings During a scheduled 10 minute portion of the weekly lab period for this course 8 00 10 00 AM on Wednesdays each team will meet with a course staff member to discuss progress on the design project Each team member will be expected to post a completed weekly progress report on their team s project web site in advance of these meetings 2 Senior Design Report ECE 477 Spring 2004 Group Account and Team Webpage Each team will be assigned an ECN group account to use as a repository for all their project documentation and for hosting a password protected team web page The team web page should contain datasheets for all components utilized the sc
4. Information on how to write the file system for the Compact Flash was taken from Operating Systems Engineering ECE 469 A large portion of the logic design information was learned in ntroduction to Digital System Design ECE 270 c Description of what new technical knowledge and skills if any were acquired in doing the project The major new skills learned include learning how to solder how to better read data sheets and how to use Orcad We also learned how to make our code more compact so that it would fit in the microprocessor d Description of how the engineering design process was incorporated into the project Reference must be made to the following fundamental steps of the design process establishment of objectives and criteria analysis synthesis construction testing and evaluation Following a decision regarding a project five objectives were decided on Parts were chosen based upon analysis of the requirements both packaging for the user and technical requirements For example the LCD needed to be large enough to be viewed from a standing position while the unit is placed on a table The different components of the design were tested as stand alone items before being combined into a final design The actual construction of the unit was accomplished quickly The packaging had been designed to closely mimic a vinyl record player with such adaptations as necessary for example the LCD and CF card reader The testing of t
5. Our knowledge of C was essential to program the Rabbit microcontroller and assembly language was also used in our design to read effectively from a card swipe reader From a hardware A 9 Senior Design Report ECE 477 Spring 2004 c d e perspective a look at prior coursework in ECE301 ECE255 ECE201 and ECE 202 were essential for our design ECE301 ECE255 and higher level courses provided an adequate background in power systems and supply that eventually led us to properly pick voltage regulators and corresponding parts We utilized the knowledge learned in ECE201 and ECE202 in picking smaller components debugging and populating our printed circuit board Description of what new technical knowledge and skills if any were acquired in doing the project Upon the completion of the DIGI POD we were able to see what we had truly learned this semester We learned to use OrCAD to do our layout and schematic We also started learning technical skills like soldering board populating and coding in Dynamic C Developing skills such as time management team management teamwork designing prototyping debugging and implementing were all a part of our experience this semester Description of how the engineering design process was incorporated into the project Reference must be made to the following fundamental steps of the design process establishment of objectives and criteria analysis synthesis construction testing and
6. Software engineering was used in programming the microcontroller and PC client Electrical engineering knowledge was applied in powering and testing components and most board related issues Systems engineering was incorporated in designing the circuit board Process engineering was used to make the board more efficient reliable and safe A 33 Senior Design Report ECE 477 Fall 2003 Appendix B Proposed Evaluation Form Senior Design Report ECE 477 Spring 2004 ECE Senior Design Course Instructor Lab TA Evaluation Directions Circle the response that best represents your assessment of each criterion Major SA CmpE A EE U other Hours week outside class SA 1 2 A 3 4 U 5 6 D 7 9 SD 10 or more Your current GPA SA 3 50 4 00 A 3 00 3 49 U 2 50 2 99 D 2 00 2 49 SD lt 1 99 COURSE SA excellent A good U average D marginal SD poor Significance of design experience Specification and clarity of design project requirements Relevance of design experience to your personal career goals and objectives Relevance of lecture topics to course objectives and outcomes Quality and clarity of course documents Clarity of grading standards and methodology Usefulness of feedback provided on graded materials and peer evaluations Effectiveness of homework assignments in pacing the design project Clarity and awareness of course outcomes De ee ee ae C WH CC E CC E
7. The project is a digital picture interface between a VGA display and a remote picture database This device enables a user to access pictures stored on a remote computer via the internet and display those pictures on a monitor without any additional equipment The device is intended for use by anyone who takes digital pictures but is geared towards users with little computer knowledge For instance an elderly couple s children could setup the entire device and send pictures to their parents The device consists of a black box with pushbuttons an IR sensor VGA connector RJ 45 connector and an AC power adapter The two major phases of our approach were a top down design followed by a bottom up implementation We started by drafting an initial block diagram and determined what major functional blocks were necessary We then examined each functional block and ultimately achieved the design at a component level From these constraints components were selected We then proceeded to implement the design block by block and then interconnected them using OrCAD schematic A layout was generated from the schematic and the board was manufactured from the layout The board was populated with components tested and software was developed to interface with the board After testing the final packaging was completed A 31 Senior Design Report ECE 477 Spring 2004 b c d e Description of how the project built upon the knowledge and
8. 477 Spring 2004 c Description of what new technical knowledge and skills if any were acquired in doing the project The most important new technical skills acquired were that of PCB design and layout using the Cadence OrCad suite This allowed us to create custom circuit boards for the project and have them fabricated We also learned two serial protocols RS232 and SPI RS232 is an asynchronous protocol that is the standard for serial communications SPI is a synchronous interface designed by Motorola that is mainly used in embedded systems with time critical applications Development using Dynamic C a C like development language for Z80 based micro controllers like the Rabbit 3000 was another new skill acquired Much technical expertise in the field of RFID was gained d Description of how the engineering design process was incorporated into the project Reference must be made to the following fundamental steps of the design process establishment of objectives and criteria analysis synthesis construction testing and evaluation The first step of the project was to define our objectives which are stated above and then establish the criteria for our success Through analysis of data sheets and power requirements we were able to design our power supply to meet our needs We also needed to analyze different specifications for RFID readers to choose one suitable for our project After designing our PCB that was synthesized and ret
9. and scalability were some of the key criteria while developing this project and it should not be extremely hard to expand this to a real world project The project does not employ any exception part requirement or manufacturing and is relatively easy to build however the installation of the project in an actual garage is challenging specially if the system is not installed when the garage is built f Description of the multidisciplinary nature of the project This project required knowledge in many different disciplines We were required to write software for the web page web server Atmel microprocessor and Rabbit microprocessor We were required to work with hardware with the PCB s we created as well as all of the power supplies which we designed We were required to give two presentations and write many documents regarding the project This draws on the technical writing aspect of the design and communication A 6 Senior Design Report ECE 477 Spring 2004 Purdue ECE Senior Design Semester Report Course Number and Title ECE 477 Digital Systems Senior Design Project Semester Year Spring 2004 Advisors Prof Meyer and Prof Jones Team Number 3 Project Title The MIDI Maestro Senior Design Students Team Composition nef ee ec Utilized in Project Graduation Date Ben Johanek Software May 2004 Matt Burgess Layout May 2004 Christopher Coy Schematic May 2004 Ryan Denison Packaging May 2004
10. and a summary of the approach The DIGI POD is a scheduling device that will easily allow for several teams to share a single lab station or lab pod efficiently and without conflict The DIGI POD hosts a website on it s Rabbit 3000 Microcontroller and it is on this website that the teams can sign up for the lab pod Once signed up a team will check in at their appointment time by swiping one of their Purdue ID cards and at this point the DIGI POD will allow power to the pod through use of X 10 devices The DIGI POD is efficient in that it does a lot of error checking will remove appointments that are 15 minutes late and will remove appointments that have not moved in the pod for more than 30 minutes This product is specifically designed for the EE477 computer lab at Purdue University For our purposed it is specified for use in one lab stations and for up to four teams of 4 people The Rabbit microcontroller acts as the brains of DIGI POD by hosting the website communicating with X 10 devices outputting to an LCD screen and receiving inputs from a card swipe and a motion sensor Description of how the project built upon the knowledge and skills acquired in earlier ECE coursework Almost all of our prior ECE coursework was required in the completion of the DIGI POD Courses with C programming and assembly language instruction such as ECE362 ECE368 ECE468 and ECE264 proved to be very valuable in the software portion of the project
11. color to coordinate it with the water in the aquarium While testing our system we were careful to take personal safety considerations We tested the entire system separately outside of the aquarium until we were sure that the system worked safely When testing the peripheral power module we used a 9 VAC power supply to check the functionality of the device before plugging it in to the wall We performed extensive testing of the device to ensure that it worked properly When evaluating the system placed the device on an aquarium and connected all the peripheral devices and made sure the design worked as a whole in the intended manner e Summary of how realistic design constraints were incorporated into the project consideration of most of the following is required economic environmental ethical health amp safety social political sustainability and manufacturability constraints The economic considerations that we took in the development of this system was to select cheap parts This will result in our being able to offer our design at a low cost to our consumers We used Maxim temperature chip interface our design to a pH meter rather than using more expensive parts that may increase the cost of the system We also offered an external peripheral power module to connect the heater water pumps and lights if the user so desires further reducing the cost and allowing us to offer the device at a lower cost Environmental considerations
12. evaluation Our project began with our entire team brainstorming about ideas and this gave us a general feel for our design We established a design criteria and set landmarks for us to reach early on for Homework 3 After analysis and selection of components we made our PCB Board layout and once it was completed we populated it with everything Prototyping each component with the Rabbit was also done at the same time Once the board was populated we built our packaging design and worked on putting our prototype on the actual PCB Board The final stages of debugging and fly wiring completed the project and we evaluated ourselves based on our success criteria that were previously established Summary of how realistic design constraints were incorporated into the project consideration of most of the following is required economic environmental ethical health amp safety social political sustainability and manufacturability constraints Many issues became project constraints some technical and other not technical at all We were constrained by issues of the Rabbit s capture rate the motion sensor s rate and the card swipe TTL logic rate These constraints are reflected in our software design We did have to watch ourselves on issues pertaining to ethics and environment as we are members of EE477 too and we needed to ensure the DIGI POD was reliable as well Our small packaging size and safety issues we faced with the product that be
13. module was working we concentrated on the RF transmission After testing the RF transmission we integrated the working part of the design with our web server end and tested it Thus we ensured that each of the modules was working before integrating a new module to the working design These engineering practices helped us in designing testing and finally implementing the project successfully Senior Design Report ECE 477 Spring 2004 e Summary of how realistic design constraints were incorporated into the project consideration of most of the following is required economic environmental ethical health amp safety social political sustainability and manufacturability constraints The choice of our project placed major constraints on us from the start Each ultrasonic sensor was 35 and it was not economically viable to purchase a significant number We bought two sensors to show the scalability of the project The RF transmission power wattage is not FCC certified and is possible an environment hazard We chose to use ultrasonic sensors and not inductive sensors to increase the safety of the design The project aides the common man in terms of reducing waste of time looking for parking spaces everyday and is hence a positive contributor to the society A real world working implementation of the project is a thousand fold bigger than the project implemented and adds to it more complexity and lesser reliability However modularity
14. of the design project as outlined below a Summary of the project including customer purpose specifications and a summary of the approach The wireless ordering device is a system that allows customers to view limited menus and possibly other information on a wireless remote device at a commercial establishment e g a restaurant or bar The aim of this project is to create a dining experience where a customer s drink and appetizer orders are waiting at their table when they are to be seated and the customer s perceived wait for that table is reduced This project utilizes the serial port of a PC to communicate with a base station This base station communicates to the remote devices via a RF connection The remote unit decodes transmitted information and displays this on an LCD display Menu navigation buttons allow a user to select and order items from the menu The remote device transmits this information back to the base station A bank of LEDs alerts a user when their table is ready Software on the base station allows the employees of the establishment to view orders or update menu information through a graphical user interface b Description of how the project built upon the knowledge and skills acquired in earlier ECE coursework In order to complete this project we needed to utilize the skills learned during our time at Purdue From our project specification we knew we d need software to run on a PC that allowed a user
15. project we sat down and brainstormed success criteria and milestones that would keep us on track and eventually lead to a finished product We utilized a development board to program our microcontrollers in order to begin software development We implemented an incremental build process we built up only part of our design at a time taking small steps towards a finished schematic We used oscilloscopes and other test equipment to ensure that our data signals were correct and that our devices were communicating properly throughout the build process Thorough testing and incremental development ensured a successful project e Summary of how realistic design constraints were incorporated into the project consideration of most of the following is required economic environmental ethical health amp safety social political sustainability and manufacturability constraints As this project is to be used continuously by many people ergonomics and health and safety were important issues A well designed and waterproof package is a must We are aware that PCBs and LCD modules pose an environmental hazard environmentally friendly methods of manufacturing and disposal alleviate that risk The RF link our system uses must conform to FCC guidelines Proper precautions must be taken to ensure our project does not interfere with similar devices Senior Design Report ECE 477 Spring 2004 f Description of the multidisciplinary nature of the proj
16. the schematic a two layer maximum printed circuit board will be created Board etching will be processed by the ECE Department the first one is free but any subsequent iterations are the team s responsibility The team is then responsible for populating the board solder the parts on the board and for completing the final stages of debugging and testing on their custom board Be of personal interest to at least one team member It is very difficult to devote the time and energy required to successfully complete a major design project in which you and or your team members have no personal interest There are ots of possibilities ranging from toys and games to useful and socially redeeming household items like audio signal processors and security systems Be tractable You should have a basic idea of how to implement your project and the relative hardware software complexity involved For example you should not design an internet appliance if you have no idea how TCP IP works Also plan to use parts that are reasonably priced have reasonable footprints and are readily available Be cognizant of the prototyping limitations associated with surface mount components Be neatly packaged The finished project should be packaged in a reasonably neat physical sound environmentally safe fashion Complete specification and CAD layout of the packaging represents one of the project design components Not involve a signi
17. we are nothing short of slightly above average solderers How to trouble shoot a circuit is another skill with which until now as been unknown Testing voltage at every point and monitoring voltage through the oscilloscope have proven to be important processes The microcontroller was a new experience It varied in operation from the development board to implementation There were problems with floating pins and unexplained errors Through careful organization and examination we were able to eliminate the errors and conclude with a fully operational product d Description of how the engineering design process was incorporated into the project Reference must be made to the following fundamental steps of the design process establishment of objectives and criteria analysis synthesis construction testing and evaluation The project began with the drafting of a design proposal in which we outlined the project objectives and success criteria After the proposal was approved each group member analyzed the data sheets of the components which we were considering After this analysis we chose the components to use in the project and tested each one individually before placing each component in the final circuit Once each component was placed on the board and the microcontroller programmed we placed the PCB inside the rifle casing PVC pipe and attached all wires to the wires in the vest We then evaluated the project by testing all success criter
18. were taken in the design by using non toxic and bio A 2 Senior Design Report ECE 477 Spring 2004 f degradable components for our system We used wood rather than plastic Although we have an LCD and use lead in our PCB we have instructed the user to return the product to the manufacturer for proper disposal Ethical considerations were taken to protect the user from harm The peripheral power module contains a 6 Amp fuse This module is also separate from the main control module which will be placed on the aquarium This reduces the risk of hazards The social considerations that we took were easy to use interface and remote access to allow user to monitor aquarium Political consideration that we took was by using a 5 V regulator on the board The user can buy the appropriate wall wart in another country using a different line voltage and use it for the system This system features the automation of aquarium maintenance and hence we had to ensure the sustainability of the system We did this by minimizing the use of components with mechanical parts The water pumps can easily be replaced by the user since they only plug in to the peripheral power module The only mechanical component is the auto feeder motor for which we offer on site service calls Although the packaging for our prototype was made from wood we intended to market our product using plastic which can be easily produced Description of the multidisciplinary nature of the p
19. Cc S CC e eiiei ei eifte ies ies ffe Course outcome assessment procedures INSTRUCTOR SA excellent A good U average D marginal SD poor Qualifications of instructor Effort put forth by instructor Instructional techniques used in classroom presentations Effectiveness in answering questions Rapport with students Availability during scheduled office hours Dedication of instructor to helping students learn and grow as professionals LAB SA excellent A good U average D marginal SD poor Quality of lab facility space room furnishings Availability of lab facility Quality of lab equipment Maintenance of lab equipment Adequacy of lab space and equipment for current enrollment Overall would rate this lab as T A SA excellent A good U average D marginal SD poor Qualifications of T A Effort put forth by T A Quality of assistance provided Rapport with students Availability during scheduled office hours Overall would rate this T A as UNIVERSITY CORE Overall would rate this instructor as Excellent Good Fair Poor Very Poor Overall would rate this course as Excellent Good Fair Poor Very Poor Senior Design Report ECE 477 Spring 2004 Appendix C ECE Course Assessment Report Senior Design Report ECE 477 Spring 2004 ECE Course Assessment Report Course ECE 477 Submitted by D G Meye
20. Keying OOK binary transmission on an infrared IR beam Optics played a major role in the project as the IR had to be focused properly so that the beam width was restrained to appropriate parameters The binary transmission required knowledge in signals and systems Skill in computer programming was necessary to implement the binary transmission in an embedded system The PCB layout and circuit construction required a thorough understanding of circuit theory In the layout it was necessary to properly distance all components away from RF transmitters and receivers to prevent electromagnetic interference RC circuits were used in the final system to debounce various switches such as the trigger A 25 Senior Design Report ECE 477 Spring 2004 Purdue ECE Senior Design Semester Report Course Number and Title ECE 477 Digital Systems Senior Design Project Semester Year Spring 2004 Advisors Prof Meyer and Prof Jones Team Number 10 Project Title Wyld Stallyns Site Management System Senior Design Students Team Composition Maior Area s of Expertise Expected J Utilized in Project Graduation Date Jeff Groom Hardware May 2004 Mike Newman Software May 2004 Loulwa Salem Hardware May 2004 Mike Wagner Software May 2004 Project Description Provide a brief one or two page technical description of the design project as outlined below a Summary ofthe project including customer purpose specification
21. Senior Design Report for ECE 477 Spring 2004 submitted by Prof David G Meyer May 11 2004 School of Electrical amp Computer Engineering Purdue University Senior Design Report ECE 477 Spring 2004 Contents KEEN eieiei eravneue ase yesianeeoemtenenaracounue ee nan eg 1 Belt By alUaliOl lt 3 scceagenissnonenadanontnnce EE 1 Course Policies and Procedures TEE 2 Eet eege EE EEN 3 Lect te Schedule a ccccsae cea iiiar atona ene E EE E EEE TEE 4 Design Project Specifications Asien dE dE EE AE 5 KEE T Outcome ASSESSMENT use enient EE EEE EEE EEEE EEEE 8 Appendix A Senior Design Reports Appendix B Proposed Evaluation Form Appendix C ECE Course Assessment Report il Senior Design Report ECE 477 Spring 2004 Overview One of the unique features of ECE 477 Digital Systems Senior Design Project is that each team gets to choose their own specific project subject to some general constraints and define specific success criteria germane to that project In general this approach to senior design provides students with a sense of project ownership as well as heightened motivation to achieve functionality All project teams this semester successfully designed and built a printed circuit board achieved at least basic functionality of their microcontroller based hardware and successfully integrated their application software Some groups in fact continued to work on their projects after the semester was over just f
22. Simple digital logic such as encoding and decoding was useful from ECE 270 Microcontroller programming and interfacing was done with new tools but the same underlying A 26 Senior Design Report ECE 477 Spring 2004 concepts from ECE 362 were used Overall the material from ECE 201 and ECE362 were most useful in completing the semester project c Description of what new technical knowledge and skills if any were acquired in doing the project Various valuable technical experiences and skills were gained through ECE477 While other courses like EE255 gave students initial understanding of OrCAD Schematic software ECE477 allowed the team to learn more about the software and its features and utilize the new found knowledge in the design process A new technical knowledge was gained by learning to use OrCAD Layout the software was a new addition that was not covered in any course in the past A major advantage of ECE477 is that it allowed the team to work on circuit design The projects gave the team an opportunity to investigate various circuit implementations and decide the option most efficient to use The course also allowed for hands on experience mainly soldering parts to a PCB Working immediately with the hardware gave everyone a good trouble shooting and problem solving experience The project experience also extended to software in terms of programming and interfacing microcontrollers The team learned Dynamic C in order to progra
23. aints Week 3 Tu microcontroller survey PIC Th microcontroller survey Rabbit Week 4 Tu microcontroller survey Atmel Th interfacing D C and A C loads optical isolation Week 5 Tu interfacing keypad encoding switch de bouncing RPGs Th interfacing PWM applications position control steppers LCDs Week 6 Tu power supply design basic considerations linear regulators Th power supply design switching regulators DC DC converters Week 7 Tu capacitor and resistor selection guidelines Th patent infringement liability Week 8 Week 9 Tu design for reliability maintainability and safety Th FMECA worksheet Week 10 Tu soldering issues and techniques board construction tips Th embedded software organization and development tools Week 11 Tu interactive broken board debugging Th interactive broken board debugging Week 12 Tu social political environmental considerations Th user manual final report and final presentation guidelines Week 13 Tu current embedded system topics Th current embedded system topics Week 14 Tu no class Th no class Week 15 4 Senior Design Report ECE 477 Spring 2004 Design Project Specifications Work on the design project is to be completed in teams of four students The design pro
24. at uses a micro controller based system that interfaces with an RFID reader an Ethernet connection and several sensors to simplify the user s daily life By maintaining an inventory that is accurate and easily accessible by any computer on the internet extra trips home can be saved and meals can be planned ahead of time based on knowledge of refrigerator contents The completed project consists of a Rabbit 3000 micro controller that interfaces with a Texas Instruments 2000 series RFID tag reader operating at 134 2kHZ a Maxim DS1722 digital temperature sensor and a Crystalfontz 634 RS232 LCD display The approach taken to achieve the design is most closely defined as modular Each component in the system was tested and debugged individually and once all individual modules were functional the system was pieced together through software control b Description of how the project built upon the knowledge and skills acquired in earlier ECE coursework Successful completion of this project would not have been possible with out the vast breadth of knowledge covered in earlier undergraduate coursework Fundamental concepts such as Ohm s law and simple circuit analysis were used when designing a power supply Micro controller programming was an essential skill as were knowledge of data structures and network programming Other skills such as interpreting data sheets and keeping accurate note books were also built on A 15 Senior Design Report ECE
25. ble project idea keeping in mind that it should be fairly inexpensive to produce and somewhat complex in nature After the idea was developed requirements were generated in the form of success criteria based on each functional block of the project After the success criteria were defined they were analyzed to determine the appropriate components necessary to realize the product Prototyping work was done in order to synthesize a viable circuit testing verified our prototypes and eventually the final circuit was constructed and packaged The original success criteria were re evaluated to make sure all of them had been accomplished Summary of how realistic design constraints were incorporated into the project consideration of most of the following is required economic environmental ethical health amp safety social political sustainability and manufacturability constraints Realistic design constraints were incorporated into nearly every aspect of the MIDI Maestro During component selection a fairly strict budget was followed in order to make the project economically feasible The MIDI Maestro was also designed to have minimal power dissipation thus making the device environmentally friendly In order to ensure user safety and the satisfaction much research was done on ethical health and safety and reliability concerns This research led to the addition of many warning labels and cautions for the device Description of the multi
26. came very realistic at the end of the project A 10 Senior Design Report ECE 477 Spring 2004 f Description of the multidisciplinary nature of the project Our product concentrated heavily on computer and electrical engineering This fact is reflected as we interfaced with TTL and serial components which our software could communicate with effectively We needed several analog and digital components that involved multidisciplinary elements between Electrical and Computer disciplines We did have non engineering issues to concern about such as environmental and ethical issues We couldn t allow our system to be hacked into and we wanted it to be environmentally friendly if at all possible A 11 Senior Design Report ECE 477 Spring 2004 Purdue ECE Senior Design Semester Report Course Number and Title ECE 477 Digital Systems Senior Design Project Semester Year Spring 2004 Advisors Prof Meyer and Prof Jones Team Number 5 Project Title Wireless Ordering Device Senior Design Students Team Composition Area s of Expertise Expected Utilized in Project Graduation Date Ed Sheriff Hardware Design May 2004 System Integration Hardware Debugging Dan Sparks Hardware Design May 2004 Hardware Debugging C Programming Mike Klockow System Programming December 2004 Software Debugging Jon Hopp Programming August 2004 Project Description Provide a brief one or two page technical description
27. ction testing and evaluation Many of the engineering design process were incorporated into our project via many professional papers Establishment of objectives were done by proposal and setting our own success criteria Much of the analysis was done regarding to constraints patent liability reliability and safety ethical and environmental Synthesis was done by schematic and PCB layout design Constructions include population of the PCB board packaging and software development Hardware and software debugging were done multiple times while we tested functionality Finally our design was evaluated by our advisors and classmates on presentation with the live demonstration Summary of how realistic design constraints were incorporated into the project consideration of most of the following is required economic environmental ethical health amp safety social political sustainability and manufacturability constraints During the constraint analysis our goal was to create a gaming system that has lower development cost than existing system Our system should cost less then 50 to produce one in volume According to ethical and environmental considerations document our system was designed to use minimal power while in operation and when it needs to be disposed of the user will be advised to dispose it to the approved facilities for recycling Our design follows the IEEE code of ethics according to the Ethics document We tested multipl
28. daylight and allow user to access the system remotely over the internet We used a microprocessor that had built in networking capability We used sensors to monitor pH and temperature The pH level was maintained by replacing the water in the tank and we used a heater to heat the water accordingly Devices that required 120 VAC were connected to an external power module that uses relays to control when these devices are connected to power b Description of how the project built upon the knowledge and skills acquired in earlier ECE coursework The knowledge we gained in EE201 Circuit Analysis EE255 Semiconductor Devices EE270 Digital Logic EE264 C programming EE362 Microprocessors EE495R Networking and EE364 Script Programming enabled us to complete this project These courses helped us to examine datasheets and be able to select components that were compatible with each other Senior Design Report ECE 477 Spring 2004 The material we gained from these courses was used extensively in designing our circuit board connecting the board to the microprocessor and programming the microprocessor and integrating the networking features with our design c Description of what new technical knowledge and skills if any were acquired in doing the project A new skill that we acquired was the ability to layout a circuit board and the details behind producing a successful PCB such as selecting footprints component placing r
29. device is designed for athletes who need a means of monitoring real time statistics during their workout Our specifications include a 16x2 line LCD screen piezo speaker rotary pulse generator 5KHz heart rate receiver and 4 AA batteries 8 hour life expectancy Our approach was to design a three part device which would minimize weight since the user will wear the device and minimize area and power consumption since it is a portable device b Description of how the project built upon the knowledge and skills acquired in earlier ECE coursework The foundation for the project was built on the microprocessor programming and interfacing techniques learned in ECE362 We used the assembly language skills learned in ECE362 and improved upon in ECE437 to aid in the programming of the ATmega8L microcontroller We also used the knowledge learned about interrupts and polling as well as timers PWMs and serial transmission From ECE270 we used knowledge about truth tables NAND gates switch debouncing and IC interfacing We used filter knowledge gained from ECE202 and ECE457 A 29 Senior Design Report ECE 477 Spring 2004 c Description of what new technical knowledge and skills if any were acquired in doing the project Some new technical knowledge and skills acquired during the design of the GPS Personal Trainer include design of schematics PCB layouts embedded C programming soldering and packaging techniques and design integration
30. disciplinary nature of the project This project incorporated the knowledge from several engineering disciplines Among these are Electrical Engineering Computer Engineering and Physics Electrical Engineering aspects played a key role in the design of our power supply and selection of necessary capacitors The majority of this project was related to Computer Engineering since a significant amount of work went into writing software and getting 3 party digital devices to communicate with one another Also to minimize the EMI within the circuitry past physics knowledge was utilized A 8 Senior Design Report ECE 477 Spring 2004 Purdue ECE Senior Design Semester Report Course Number and Title ECE 477 Digital Systems Senior Design Project Semester Year Spring 2004 Advisors Prof Meyer and Prof Jones Team Number Group 4 Project Title DIGI POD Senior Design Students Team Composition Expected Graduation Date Area s of Expertise Utilized in Project Christopher Carlevato C programming software design May 2004 Adam Goodson Circuit Analysis hardware May 2004 integration Brandon E Wallace Circuit Analysis C programming May 2004 Rajeeve Subbiah C programming hardware design May 2004 Project Description Provide a brief one or two page technical description of the design project as outlined below a b Summary of the project including customer purpose specifications
31. e times to verify proper operation and to avoid misuse Many health risks were studied and the warning labels will be placed on the console According to reliability and safety analysis our system was designed reliably that it should operate over 35 years continuously powered Potential dangers that can be caused by our system were identified and many solutions were found in FMECA document Our design does not infringe on any patents available in the United States according to our patent liability analysis Our PCB layout was done efficiently with no extraneously hard malfunctions The board should be easily populated by the machine or hand Description of the multidisciplinary nature of the project The project primarily consists of three disciplines include electrical computer and mechanical engineering The video system and power supply are both examples of the Electrical aspect of the design Building the wood enclosure are aspects of mechanical engineering Finally programming and interfacing with the microcontroller and Xilinx are examples of computer engineering A 22 Senior Design Report ECE 477 Spring 2004 Purdue ECE Senior Design Semester Report Course Number and Title ECE 477 Digital Systems Senior Design Project Semester Year Spring 2004 Advisors Prof Meyer and Prof Jones Team Number 9 Project Title InfraRed based Interactive Laser Tag IRILT Senior Design Students Team EE BCEE Utilized in Pro
32. ect The RF link schematic design and board layout required the talents of an Electrical Engineer to reduce noise and ensure proper communication The PC software and firmware needed to allow the microcontrollers to interface with the RF devices and LCD module was developed using skills acquired by a Computer Engineer Industrial Engineering considerations were needed to develop packaging concerns and constraints The large amount of paperwork required for the group to effectively communicate their goals and progress incorporated the school of Liberal Arts and Management A 14 Senior Design Report ECE 477 Spring 2004 Purdue ECE Senior Design Semester Report Course Number and Title ECE 477 Digital Systems Senior Design Project Semester Year Spring 2004 Advisors Prof Meyer and Prof Jones Team Number 6 Project Title Intelligent Refrigerator System Senior Design Students Team Composition e de o e Utilized in Project Graduation Date Scott Mullins Software Brian Schrameck Parts Coordinator Rudy Ristich HTTP Software Mike Beaudette Debugging Project Description Provide a brief one or two page technical description of the design project as outlined below a Summary ofthe project including customer purpose specifications and a summary of the approach The Intelligent Refrigerator System is future forward proof of concept project The purpose was to design a high tech refrigerator th
33. ed through the research of literal and doctrine of equivalents infringement Sustainability of the device is contingent upon the expected battery life 8 hrs as well as the estimated lifetime of such parts as the power supplies and regulator Manufacturability was taken into account by the use of customizable packaging f Description of the multidisciplinary nature of the project The project had to be designed from two viewpoints The constraint analysis was done from an electrical engineering perspective while an exercise science perspective was needed to determine what features to include and how the overall operation of the device should function A 30 Senior Design Report ECE 477 Spring 2004 Purdue ECE Senior Design Semester Report Course Number and Title ECE 477 Digital Systems Senior Design Project Semester Year Spring 2004 Advisors Prof Meyer and Prof Jones Team Number 12 Project Title Digital Picture Frame Interface Senior Design Students Team Composition Area s of Expertise Expected Utilized in Project Graduation Date Jeff Turkstra C Prog Interfacing May 2004 Schematic Layout Bill Kreider IR Web design May 2004 Schematic Phillip Boone Software Debugging May 2004 Design Constraints Egomaron Jegede C Prog Debugging May 2004 Network Prog Project Description a Summary of the project including customer purpose specifications and a summary of the approach
34. ficant amount of physical construction The primary objective of the project is to learn more about digital system design not mechanical engineering Therefore most of the design work for this project should involve digital hardware and software 5 Senior Design Report ECE 477 Spring 2004 Project Proposal Each group should submit a proposal outlining their design project idea This proposal should not be wordy or lengthy It should include your design objectives design functionality overview and project success criteria The five success criteria common to all projects include the following Create a bill of materials and order sample all parts needed for the design Develop a complete accurate readable schematic of the design Complete a layout and etch a printed circuit board Populate and debug the design on a custom printed circuit board Package the finished product and demonstrate its functionality In addition to the success criteria listed above a set of five significant project specific success criteria should be specified The degree to which these success criteria are achieved will constitute one component of your team s grade Forms for the preliminary and final versions of your team s project proposal are available on the course web site Use these skeleton files to create your own proposal Note that the proposal should also include assignment of each team member to one of the design components as well as to
35. forms of software the integration of different pieces of hardware and the combination of all of the pieces into an attractive package A 20 Senior Design Report ECE 477 Spring 2004 Purdue ECE Senior Design Semester Report Course Number and Title ECE 477 Digital Systems Senior Design Project Semester Year Spring 2004 Advisors Prof Meyer and Prof Jones Team Number 8 Project Title Sparky Senior Design Students Team Composition CR Utilized in Project Graduation Date Rich Capone Schematic Game May 15 2004 Hong Jin Cho Flash CF Packaging May 15 2004 David Elliott PCB HW debugging May 15 2004 Ryan Gates Video Controller May 15 2004 Project Description Provide a brief one or two page technical description of the design project as outlined below a Summary of the project including customer purpose specifications and a summary of the approach This project is a simple video game console Interfaces include a handheld NES controller and CompactFlash card the game cartridge The output is NTSC video directly to a television input jack The console is powered by a standard 6V wall wart power plug This is a product marketed towards anyone who enjoys gaming because it will be expandable and have a wide array of games The design was approached in a following manner First the project was chosen and the success criteria were set Then studies regarding the components necessary and ma
36. g again on the fully synthesized and constructed design Finally in order to evaluate the success or failure of the project we demonstrated the functionality of the design and thus the fulfillment of the initial success criteria e Summary of how realistic design constraints were incorporated into the project consideration of most of the following is required economic environmental ethical health amp safety social political sustainability and manufacturability constraints Realistic design constraints were incorporated into the project through homework There was homework assigned weekly to investigate the constraints Each homework had a theme and was expected to relate our project to that theme Examples of homework assignments include Ethical A 27 Senior Design Report ECE 477 Spring 2004 and Environmental Impact Analysis Patent Liability Analysis Reliability and Safety Analysis and Component Selection and Rationale Each of the homework assignments discuss in depth the realistic design constraints of our project f Description of the multidisciplinary nature of the project Any project taken from concept to realization is going to be multidisciplinary in nature First a definition of what the project is supposed to do is necessary Next the actual design must be laid out Details such as how something will be encoded or programmed must also be worked out The whole project must then come together as a work of both
37. hardware and software Functionality can be achieved through this synergy of hardware and software but other factors must still be considered What customers will want this product how should the product be packaged are there any ethical or environmental issues to consider et cetera Each one of these questions must be answered and no one person is an expert in all these issues Large projects require a team of people to cover every aspect of a good and successful design A 28 Senior Design Report ECE 477 Spring 2004 Purdue ECE Senior Design Semester Report Course Number and Title ECE 477 Digital Systems Senior Design Project Semester Year Spring 2004 Advisors Prof Meyer and Prof Jones Team Number 11 Project Title GPS Personal Trainer Senior Design Students Team Composition Area s of Expertise Expected Utilized in Project Graduation Date Tyler Olsen EE264 EE270 EE362 May 2004 EE202 Phil Vorsilak EE264 EE270 EE362 May 2004 EE437 Nick McCarroll EE202 EE270 EE362 May 2004 EE457 Gennady Vayl EE201 EE270 EE362 May 2004 EE264 Project Description Provide a brief one or two page technical description of the design project as outlined below a Summary of the project including customer purpose specifications and a summary of the approach The GPS Personal Trainer is an electronic device which measures distance time speed and heart rate of a user during exercise The
38. he project following construction was limited by the fact that not all of the components were fully functional on their own The final evaluation of the project concluded that some major design changes were required in order to make the project a success e Summary of how realistic design constraints were incorporated into the project consideration of most of the following is required economic environmental ethical health amp safety social political sustainability and manufacturability constraints Many different constraints must be taken into consideration when designing a project Perhaps the most important for this project would be the economic constraints Due to cost of manufacturing purchasing rights for using a patent design costs etc this project is not very feasible Other units which have similar functions exist on the marketplace today Environmental constraints were basically limited to the constraints placed on it by using a PCB board The manufacturer of the PCB board would be responsible for the environmental issues created in its manufacture however this group would still be responsible for dealing with its disposal There were limited social political or ethical constraints which needed to be addressed A 19 Senior Design Report ECE 477 Spring 2004 f Description of the multidisciplinary nature of the project This project required the use of hardware software and construction It used different
39. hematic board layout software listings interim reports presentation slides etc It should also contain the individual lab notebooks for each team member as well as the progress reports prepared in advance of the weekly progress briefings for each team member At the end of the semester each team must submit a CD ROM archive of the group account Homework Several homeworks will be assigned related to key stages of the design project Some of the assignments will be completed as a team 1 3 12 14 some will be completed individually 2 13 and some will be completed by a selected team member one from the set 5 6 7 10 and one from the set 4 8 9 11 1 Preliminary Design Project Proposal OrCAD Exercise Final Design Project Proposal Design Constraint Analysis and Component Selection Rationale Parts List Packaging Specifications and Design Schematic and Hardware Design Narrative Theory of Operation Board Layout Patent Liability Analysis 9 Reliability and Safety Analysis 10 Firmware Listing and Software Narrative 11 Social Political Environmental Analysis 12 User Manual 13 Confidential Peer Review 14 Senior Design Report Project Summary C0 SON FG 189 Grade Determination Your course grade will be based on both team effort 50 and individual contributions 50 TEAM COMPONENTS INDIVIDUAL COMPONENTS Project Proposal 1 and 3 Significance of Individual Contribution User Manual 12 Laboratory Notebook Seni
40. ht that actual weapons provide The project required knowledge in optics signal processing computer programming and circuit theory b Description of how the project built upon the knowledge and skills acquired in earlier ECE coursework The knowledge of component operation is the main skill we applied to this project Being able to understand the data sheets was a direct application of previously acquired skills The microcontroller required C programming which would have been acquired in EE156 and EE264 The interrupt operations as well as time sheet operations were gleaned from EE362 The RF operation was understood through the EE307 lab course The IR operation and frequency modulation was explored in EE301 and EE306 An A 23 Senior Design Report ECE 477 Spring 2004 understanding of the vibrator motor operation was gained in EE321 The debouncing switches which were necessary to our design draw roots from EE202 As a whole our project represented many EE classes through our Purdue careers from the very first back Sophomore year c Description of what new technical knowledge and skills if any were acquired in doing the project There was a plethora of new experience gained throughout this course To do something on paper is far different from doing something in hardware There are numerous problems which emerge as a result of unforeseen circumstances Simple tasks such as soldering were a mystery to us at the beginning and now
41. ia i e shooting and ensuring that the ammunition counter decremented e Summary of how realistic design constraints were incorporated into the project consideration of most of the following is required economic environmental ethical health amp safety social political sustainability and manufacturability constraints We were required to write a report considering each of the design constraints listed above A patent liability analysis was performed to ensure that if marketed project IRILT would not infringe on any patents infringement would require the payment of royalty fees The limited ability to recycle PVC and PCB was noted in the environmental analysis considering the fact that neither are bio degradable and could have adverse effects on the environment As far as ethics are concerned we made a product that was A 24 Senior Design Report ECE 477 Spring 2004 both safe and reliable The gun is safe to the end user because it does not look like a real gun Because of this it will not be misconstrued as a real gun thereby endangering the end user We also went through a number of testing cycles to make sure that the gun and vest could actually stand up to regular use This showed that the project was reliable f Description of the multidisciplinary nature of the project As a laser tag project it was necessary to be able transmit coded information from one unit to another We accomplished this goal by using On Off
42. idisciplinary nature of the project There were several aspects of the design that would make it classified as multidisciplinary The final packaging was meant to be as aesthetically pleasing as possible and much thought was put into making sure the packaging was logical and looked good Economic analysis was used in making critical decisions such as choosing parts and deciding to save time by purchasing more expensive parts that were easier to integrate into the design A 17 Senior Design Report ECE 477 Spring 2004 Purdue ECE Senior Design Semester Report Course Number and Title ECE 477 Digital Systems Senior Design Project Semester Year Spring 2004 Advisors Prof Meyer and Prof Jones Team Number 7 Project Title Breakthrough Electronic Audio Turntable System Senior Design Students Team Composition Area s of Expertise Expected Utilized in Project Graduation Date Clewin McPherson Software RPG May 2004 Packaging and Schematic Nick Schnettler Software CF and RPG May 2004 and Soldering Jim Bauerle Software MP3 and May 2004 Layout Ruth Devlaeminck Software LCD and May 2004 ATD and Packaging Project Description Provide a brief one or two page technical description of the design project as outlined below a Summary ofthe project including customer purpose specifications and a summary of the approach This project is an MP3 turntable It is intended for use by Disc Joc
43. ing courses was the foundation for this project ECE270 helped with reading data sheets prototyping with a breadboard and using lab equipment signal generators and oscilloscopes The use of a microcontroller and interfacing with peripheral devices was learned in ECE362 The software for this project was written in embedded C which is not very different from what was learned in ECE264 ECE201 and ECE255 supplied the circuitry background needed for the power supply design Senior Design Report ECE 477 Spring 2004 c Description of what new technical knowledge and skills if any were acquired in doing the project In completing the various stages of this project new knowledge was gained in the areas of schematic designs printed circuit board layout embedded software soldering techniques and integration of 3 party hardware Also miscellaneous professional aspects of product development such as safety and reliability patent liability ethics and environmental analysis were gained This was also the first experience in taking an idea all the way from conception to completion of a finished product d Description of how the engineering design process was incorporated into the project e f Reference must be made to the following fundamental steps of the design process establishment of objectives and criteria analysis synthesis construction testing and evaluation The first couple weeks were spent developing a feasi
44. ject Graduation Date Jason Kazmar Optics 5 15 2004 Chad Lau Signals and Systems 5 15 2004 Jonathan Stoffer Software Design 5 15 2004 Ali Zaheeruddin Layout and Schematic 5 15 2004 Project Description Provide a brief one or two page technical description of the design project as outlined below a Summary of the project including customer purpose specifications and a summary of the approach Project IRILT InfraRed based Interactive Laser Tag is a reliable embedded system which provides digitally managed laser tag equipment allowing the user to create his her own game rules The IRILT system includes two complete units each unit is comprised of a sensor vest with headband and a gun Each vest comes complete with four infrared IR sensors two on the front and two on the back while the headband has two front and back Next to each sensor are a red LED and a vibrating motor Once the sensors pick up an IR shot from another gun the LED will light up and the motor will vibrate indicating a hit The gun is an IR emitting rifle and it is connected to an LCD display mounted on an arm band The LCD displays important information such as the ammunition level health meter status and important messages The target market for IRILT is the military IRILT was designed to be a combat simulator which the military could use for battlefield training The gun was designed to be sturdy and reliable as well as provide the weig
45. ject topic is flexible and each group is encouraged to pick a product that uses the strengths and interest areas of their group members The design must have the following components Microprocessor To help make the project tractable microprocessor choices will be limited to 68HC12 PIC Rabbit and Atmel variants Development tools are readily available in lab to support these devices Further the devices themselves are relatively low cost and readily available Interface to Something Your embedded system must interface to some other device or devices It could be a computer or it could be some embedded device such as a Palm Pilot telephone line TV etc Some interface standards that could be used are serial to a computer parallel to a computer Universal Serial Bus USB Firewire Ethernet Infrared IR Radio Frequency RF etc This requirement has a large amount of freedom To help with some of the more complex interfaces such as Ethernet USB or Firewire there are dedicated chips which encapsulate the lowest layers of the interface This makes using these interfaces easier to handle but not necessarily trivial Be sure to investigate the interface s you wish to utilize and make a reasonable choice NOTE Interfaces involving A C line current require special permission see the instructor for details Custom printed circuit board Through the process of the design each group will be required to draw a detailed schematic From
46. keys who would manipulate music at parties etc It is not intended for use as a stand alone unit it would be plugged into a mixer and external amplifier and used like a vinyl turntable is used today The idea is to make the unit as similar in function to a vinyl record player as possible while allowing for the use of more compact forms of music The unit will load MP3 s via a compact flash card and then allow the user to manipulate the loaded file as though it was a record on a turntable using an RPG connected to a platter from a record player An LCD display various pushbuttons a linear potentiometer and a turntable platter will comprise the user interface b Description of how the project built upon the knowledge and skills acquired in earlier ECE coursework In the building of the power supply system knowledge from ntroduction to Electronic Analysis Design ECE 255 was very useful in choosing values for capacitor values Previous knowledge of microprocessors and the interfacing of peripherals to them from Microprocessor Systems and Interfacing ECE 362 proved useful One of the most important laws that we used was V IR which was learned in Linear Circuit Analysis I ECE 201 We also used RC time constants from that class in attempting to build our own A 18 Senior Design Report ECE 477 Spring 2004 oscillator Some of our prototyped software was written in Python a language taught in Software Engineering Tools Lab ECE 364
47. m the microcontrollers and achieve the final product functionality d Description of how the engineering design process was incorporated into the project Reference must be made to the following fundamental steps of the design process establishment of objectives and criteria analysis synthesis construction testing and evaluation The project started with the establishment of objectives These were manifested as success criteria and were used to determine whether or not our goals had been met After goals had been established a substantial amount of analysis was performed This occurred when making special considerations during parts selection schematic design PCB layout design and software design We often had to do cost benefit analysis to come up with cost environmentally effective solutions as well as electrical circuit analysis to come up with efficient solutions We took a bottom up approach and tested all sub components before bringing everything together This was shown through the prototyping of sub circuits on bread boards and the testing of software on development boards When sufficient testing had been done we synthesized the entire system by bringing all sub circuits together on designated PCBs and loading software onto the microcontrollers that were at the heart of these circuits We constructed all external circuitry and boxes to house the circuitry as well as user interfaces to make the design useable We then performed testin
48. monstrate basic competency in all the course outcomes listed above in order to receive a passing grade Demonstration of Outcome i will be based on the satisfaction of the design component homework for which a minimum score of 60 will be required to establish basic competency Demonstration of Outcome 11 will be based on the individual lab notebook for which a minimum score average of two separate evaluations of 60 will be required to establish basic competency Demonstration of Outcome iii will be based on satisfaction of the general and project specific success criteria for which a minimum score of 80 will be required to establish basic competency Demonstration of Outcome iv will be based on the professional component homework for which a minimum score of 60 will be required to establish basic competency Demonstration of Outcome v will be based on the Design Review the Final Presentation and the Final Report A minimum score of 60 on the Design Review and a minimum score of 60 on the Final Report and a minimum score of 60 on the Final Presentation will be required to establish basic competency Since senior design is essentially a mastery style course students who fail to satisfy all outcomes but who are otherwise passing based on their NWP will be given a grade of I incomplete The grade of I may subsequently be improved upon successful satisfaction of all outcome deficiencies If outcome deficiencies are n
49. nding their datasheets and this built on the knowledge that we acquired in ECE270 The Atmel microprocessor we used for the A 4 Senior Design Report ECE 477 Spring 2004 transmitter block was programmed in Assembly which we learned in ECE362 Numerous other skills that were acquired in ECE362 were used such as using the USART on the Atmel and SCI on the Rabbit as well as the built in timers in the microprocessors Coding of the Rabbit was done in dynamic C and the C programming language was presented in CS152 ECE264 and ECE368 c Description of what new technical knowledge and skills if any were acquired in doing the project During this project the main skill we acquired are i Learning to use Orcad We used Orcad extensively during the designing of the each of the PCBs ii Embedded Software Design and Testing Developing software for the Atmel in assembly and Rabbit routines in Dynamic C ili Interfacing with other devices using serial communication Communication between Atmel RF Transmitter and Rabbit RD Receiver iv RF transmission techniques Using checksum and other measures to increase reliability of RF transmission d Description of how the engineering design process was incorporated into the project Reference must be made to the following fundamental steps of the design process establishment of objectives and criteria analysis synthesis construction testing and evaluation The first phase of the pr
50. nds their design and the professionalism with which they present it To facilitate the design review process the class will be split into subgroups that will meet at individually scheduled times Both the presenters and the assigned reviewers will be evaluated 6 Senior Design Report Milestones ECE 477 Spring 2004 Each group is responsible for setting and adhering to their own schedule however there are several important milestones as listed in the table below Always expect the unexpected and allow for some buffer in your schedule Budget your time Week 1 Jan 12 Jan 16 Formulate Group and Project Ideas Week 2 Jan 19 Jan 23 Preliminary Project Proposal Due Week 3 Jan 26 Jan 30 e Research Parts e Create Block Diagram Week 4 Feb 2 Feb 6 Final Project Proposal Due e Draw Schematic Week 5 Feb 9 Feb 13 e Construct Prototype e Begin Software Development e Create Bill of Materials Week 6 Feb 16 Feb20 Begin Ordering Sampling Parts Schematic and Parts List Due Week 7 Feb 23 Feb27 e Prepare for Design Review Week 8 Mar 1 Mar 5 Design Reviews Week 10 Mar 22 Mar 26 Continue Software Development e Populate Circuit Board Week 11 Mar 29 Apr 2 Week 12 Apr 5 Apr 9 Firmware Listing Due Week 13 Apr 12 Apr16 Debug Hardware on Printed Circuit Board e Hardware Software Integration and Testing Week 14 Apr 19 Apr23 l Write Repo
51. ny analyses were done The schematic and PCB layout were done The PCB board was populated tested and debugged while software was developed in parallel b Description of how the project built upon the knowledge and skills acquired in earlier ECE coursework This project was largely based upon the knowledge we have gained in many of our classes We used our analog devices skills ECE201 202 for the speaker and the video out We used a large amount of our digital design courses from the past This is evident in the amount of Assembly ECE362 and ABLE ECE270 code used for the design HCS12 processor used in the project was a family of HC12 used in ECE362 Usage of data bus and latches were learned in ECE270 c Description of what new technical knowledge and skills if any were acquired in doing the project A 21 Senior Design Report ECE 477 Spring 2004 d e f New technical knowledge we gained included generating schematics and creating PCB layouts Additionally we learned about how to use a memory bus and how NTSC video works We learned how to code in embedded C and improved our Assembly skills Finally we learned some very key skills for working in a group on a technical project Description of how the engineering design process was incorporated into the project Reference must be made to the following fundamental steps of the design process establishment of objectives and criteria analysis synthesis constru
52. oject was involved in brainstorming ideas about different projects that we could implement After debating on many project ideas we decided to implement the parking garage monitoring system which would be really useful in real life Once the project was selected project timelines were set to allot ample time for testing debugging purposes Milestones that were set for the project gave utmost priority in achieving the success criteria s chosen for the project The next phase was to select appropriate components that would ideally suit our design In order to avoid any mistakes in the PCB layouts for the three boards we ensured that the schematic for the design should be close to perfect If a mistake was made in the design process there would be a second chance after our midterm evaluation to correct our schematic before outsourcing our PCB design for manufacturing Each component of the design was thoroughly tested on the breadboard to ensure that there were no manufacturing defects before implementing it on the PCB New components were added incrementally onto the PCB after ensuring that the previous part of the design was working as desired before adding newer components For example we would first test the functionality of the sensors by measuring the ping and echo by means of an oscilloscope Then we connected the Atmel to the sensors and tested it to see if we are able to receive an echo from the sensors Once we were assured that the transmitter
53. on Provide a brief one or two page technical description of the design project as outlined below a Summary of the project including customer purpose specifications and a summary of the approach The project was to create a parking garage monitoring system that used ultrasonic sensors to detect the presence or absence of a vehicle transmit this information via cat5 cable to a transmitter module which transmits the information via RF to a RF receiver module on each floor which in turn passes the information via cat5 cable to a web server that displays the information The purpose behind the project is to allow the user the driver looking for a space to park information about the status of a garage before entering a facility thereby shortening the time spent searching for available spaces The customer for the product is the owner of the garage the one who wishes to ease their customer s frustration The approach of the design was to get the sensing portion of the design and the web server portion working independently first and then test the RF transmission with the two functional halves b Description of how the project built upon the knowledge and skills acquired in earlier ECE coursework The project required designing our own power supplies and various other small analog circuits which built on our ECE201 202 and 255 knowledge We were required to interface with several multiplexers and other IC s which required understa
54. one of the professional components of the project Design Review Part way through the design process there will be a formal design review This is a critical part of the design process In industry this phase of the design process can often make or break your project A good design review is one where a design is actively discussed and engineers present concur with the current or amended design The design review is in some cases the last chance to catch errors before the design is frozen boards are etched and hardware is purchased A friend is not someone who rubber stamps a design but rather one who actively challenges the design to confirm the design is correct Approach the design review from a top down bottom up perspective First present a block diagram of your design and explain the functional units Then drop to the bottom level and explain your design at a schematic level Be prepared to justify every piece of the design a perfectly valid answer however is applying the recommended circuit from an application note If you do use a circuit from an application note have the documentation on hand and be able to produce it Your grade for the design review will not be based on the number of errors identified in your design The best engineers make mistakes and the purpose of the design review is to catch them rather than spend hours of debugging later to find them The design review will be graded primarily on how well the group understa
55. or Design Report 14 Design Component 5 6 7 or 10 Design Review Professional Component 4 8 9 or 11 Final Video Presentation OrCAD Exercise 2 Final Written Report amp Archive CD Peer Review DR 13 FP Project Success Criteria Satisfaction Weekly Progress Briefings Attendance Your Raw Weighted Percentage RWP will be calculated based on the weights above and then curved De mean shifted with respect to the upper percentile of the class to obtain a Normalized Weighted Percentage NWP Equal width cutoffs will then be applied based on the Windowed Standard Deviation WSD of the raw class scores the minimum Cutoff Width Factor CWF used will be 10 i e the nominal cutoffs for A B C D will be 90 80 70 60 respectively Before final grades are assigned the course instructor will carefully examine all borderline cases i e NWP within 0 5 of cutoff Once grades are assigned they are FINAL and WILL NOT be changed Note that all course outcomes listed on page 7 of this document must be demonstrated in order to receive a passing grade for the course e Senior Design Report ECE 477 Spring 2004 Lecture Schedule Week 1 Tu course and project overview team formation Th project proposal guidelines and documentation requirements Week 2 Tu PCB layout basics OrCAD demo packaging specifications Th technical writing guidelines real world design constr
56. or fun to add features and or obtain a higher degree of functionality In short students not only devoted a lot of time to this course but they also learned a lot in the words of several students more than in all their other ECE courses combined The complete set of Senior Design Reports is included as Appendix A Self Evaluation The high degree of success achieved by each team was a direct result of the availability of the course staff Profs Meyer and Jones to spend a significant amount of time consulting with each team Another reason for the high degree of success attained was the incredible effort put forth by our outstanding teaching assistants John Leimgruber and Gilbert Tseng The course staff is quite pleased with the rigorous quantitative assessment of the course outcomes There is always room for change however and one of our goals has always been to strive for continuous improvement A problem inherent in all open ended project courses is the tractability of the student chosen design projects This semester there was one project in particular that should not have been allowed based on its inherent complexity The staff needs to be more forceful in rejecting project proposals that are too ambitious and in suggesting alternative ideas This semester we posted a descriptive list of alternate projects on the course web site but we were unable to convince students to abandon their own ideas Al
57. ot satisfied by the prescribed deadline the grade of I will revert to a grade of F Senior Design Report ECE 477 Fall 2003 Appendix A Senior Design Reports Senior Design Report ECE 477 Spring 2004 Purdue ECE Senior Design Semester Report Course Number and Title ECE 477 Digital Systems Senior Design Project Semester Year Spring 2004 Advisors Prof Meyer and Prof Jones Team Number 1 Project Title Chateau De Nemo Senior Design Students Team Composition a aee T aAa Toa Utilized in Project Graduation Date Ali Shareef Circuits Network 5 15 04 Programming Jason Lim Embedded Programming 5 15 04 Sin Hoe Lim Circuits 5 15 04 Niraj Balwani Networking 5 15 04 Programming Project Description Provide a brief one or two page technical description of the design project as outlined below a Summary of the project including customer purpose specifications and a summary of the approach We designed an automated aquarium controller to help people who do not have enough time to maintain their aquarium Our product would be suitable for people who travel a lot and aquariums that are in public places such as shopping malls offices and clinics The aquarium controller must be able to maintain pH levels of water since change of pH indicates excess waste in the water It should also be able to monitor and control temperature feed the fish on user specified schedules simulate
58. outing size of traces and generating Gerber files for the PCB fabrication Another skill we acquired was deeper understanding of how the server client paradigm worked in network communications Another skill we acquired was the ability to search for and examine patents d Description of how the engineering design process was incorporated into the project Reference must be made to the following fundamental steps of the design process establishment of objectives and criteria analysis synthesis construction testing and evaluation We selected project success criteria s that we were certain that we could accomplish during the semester We also selected criteria s that we knew would be necessary to build a truly automated low maintenance aquarium controller We took special considerations when we realized that we need to control peripheral devices such as heaters lights and water pumps that required 120 VAC Since it was not safe for us to have this voltage on the board along with the microprocessor on of the main decisions that we made was to separate the two We built the peripheral power module and isolated it from the main controller module The current design of the peripheral power module also has a 6 Amp fuse on it to protect the device in case of a short circuit During the construction of the system we took careful measurement of the packaging material to ensure that the end product looked professional We painted the device a blue
59. r Term Spring 2004 Course PIC D G Meyer 1 Were all course outcomes addressed during the administration of the course If not why not and what actions do you recommend to remedy this problem in future offerings of this course The following outcomes must be demonstrated to receive a passing grade in ECE 477 i an ability to apply knowledge obtained in earlier coursework and to obtain new knowledge necessary to design build and test a microcontroller based digital system ii an understanding of the engineering design process iii an ability to function on a multidisciplinary team iv an awareness of professional and ethical responsibility v an ability to communicate effectively in both oral and written form All of these outcomes were addressed and as indicated below all students enrolled during the Spring 2004 offering of ECE 477 successfully demonstrated each outcome Average Outcome Scores and Outcome Demonstration Statistics 77 Spring 2004 Outcome 1 Avg Score 81 7 Passed 48 48 00 00 Failed 0 48 Outcome 2 Avg Score 74 9 Passed 48 48 00 00 Failed 0 48 Outcome 3 Avg Score 85 0 Passed 48 48 00 00 Failed 0 48 Outcome 4 Avg Score 80 2 Passed 48 48 00 00 Failed 0 48 Outcome 5 Avg Score 85 0 Passed 48 48 00 00 Failed 0 48 Demonstrated all five outcomes based on primary assessment 48 48 100 00 Note Remediation on Outcome 4 was required for 6 st
60. roject Our system incorporated ideas found in electrical and computer engineering applied to maintaining a biological condition This project required the integration of both hardware and software The underlying foundation that our system was built on required both electrical and hardware knowledge The monitoring of the temperature pH remote access and determination of when to activate the different peripheral devices required software We needed to gain the understanding that excess fish waste results in a change in the pH level of the water We needed this understanding to satisfy the biological needs of fish in determining the ideal pH range for them and implementing this in our software A 3 Senior Design Report ECE 477 Spring 2004 Purdue ECE Senior Design Semester Report Course Number and Title ECE 477 Digital Systems Senior Design Project Semester Year Spring 2004 Advisors Prof Meyer and Prof Jones Team Number Group 2 Project Title Parking Garage Monitoring System Senior Design Students Team Composition Expected Area s of Expertise Graduation Utilized in Project Date Matt Downes Embedded software Fall 2004 design and hardware layout construction Stephen Osborn Embedded software Fall 2004 hardware debugging Anup Rajan Daniel Schematic Layout Spring 2004 Design Prototyping Pawanjit Singh Chawla Emebedded software Summer 2004 design and debugging Project Descripti
61. roposal established the team objectives and project specific success criteria We performed detailed analysis of design constraints packaging circuit design and the theory of operation We created a layout with a successful design rules check that was then submitted for a production check and subsequently for manufacturing We then developed software populated the circuit board and tested each aspect of software and hardware We documented the final working project and gave professional presentations while in progress and at completion of the project Summary of how realistic design constraints were incorporated into the project consideration of most of the following is required economic environmental ethical health amp safety social political sustainability and manufacturability constraints We originally wanted to incorporate an LCD display into our project However due to economic constraints we could not obtain an affordable display and eliminated that aspect of the design We performed an ethical and environmental analysis of the product reliability and safety analysis of the electrical components a patent and liability analysis to avoid infringement on existing products and a design constraint analysis investigating power supply packaging computation and cost constraints involved in component selection A 32 Senior Design Report ECE 477 Spring 2004 f Description of the multidisciplinary nature of the project
62. rt and Prepare Presentation Week 15 Apr 26 Apr 30 Project Demonstrations and Final Presentations Week 16 May 3 May 7 Archive CD Peer Review Final Report and Senior Design Report due May 5 at 5 00 PM e Senior Design Report ECE 477 Spring 2004 Outcome Assessment In order to successfully fulfill the course requirements and receive a passing grade each student is expected to demonstrate the following outcomes i an ability to apply knowledge obtained in earlier coursework and to obtain new knowledge necessary to design and test a microcontroller based digital system 1 2 3 4 5 a b c e i j K ii an understanding of the engineering design process 4 6 7 b c e f h iii an ability to function on a multidisciplinary team 6 7 d h j iv an awareness of professional and ethical responsibility 6 7 f h j v an ability to communicate effectively in both oral and written form 6 g The following instruments will be used to assess the extent to which these outcomes are demonstrated the forms used to score each item are available on the course web site Outcome Evaluation Instruments Used 1 Design Component Homework ii Individual Lab Notebooks two separate evaluations iii Success Criteria Satisfaction general and project specific iv Professional Component Homework v Formal Design Review Final Presentation and Final Report Students must de
63. s and a summary of the approach The project was to provide a solution for the problem of physical space allocation to competing parties Our customer is any organization that shares common workspaces such as offices labs and cubicles The purpose of the project is to solve the aforementioned problem by creating an electronic and autonomous system that can be used efficiently and easily The specifications set forth during the proposal phase of the project included a web enabled reservations system authentication of users in order to activate electrically powered site equipment and clear indications of remaining time Other specifications included interfacing to and using readings from a motion sensor for the purpose of canceling reservations when parties are not present To approach the project the team met to discuss alternative strategies for meeting the specifications in practical manners Research into similar products was done in order to frame our expectations into something that was realistic and possible to do in one semester After developing a basic proposal of the project the team began meeting the milestones set by the ECE477 course outline b Description of how the project built upon the knowledge and skills acquired in earlier ECE coursework ECE 477 built on the material taught in ECE 201 ECE 270 and ECE 362 Basic circuit knowledge derived from 201 was useful most when reading data sheets and creating simple circuits
64. skills acquired in earlier ECE coursework This design built upon many prerequisite courses EE201 knowledge was used in component selection EE207 and EE208 knowledge was used in board testing and debugging EE255 was used to design the current reference input to the digital to analog converter EE270 knowledge was used to configure the PLDs as latches work with binary and hexadecimal numbers and read data sheets EE362 was used for timing analysis microcontroller programming operating a logic analyzer and working with bit wise operations EE264 EE495R and EE462 programming knowledge was applied to the software development Description of what new technical knowledge and skills if any were acquired in doing the project Several new skills were learned in the span of the project We learned to solder select components design a schematic produce a layout project management division of responsibility ability to work on a target deadline techniques of debugging and C microcontroller programming Description of how the engineering design process was incorporated into the project Reference must be made to the following fundamental steps of the design process establishment of objectives and criteria analysis synthesis construction testing and evaluation Weekly homeworks focused on important aspects of the engineering design process were completed individually and as a team The preliminary project proposal and final project p
65. so the course and instructor evaluation forms used by the senior design courses in particular EE 402 and EE 477 need to be revamped The forms developed for EPICS were used by default until they no longer were made available to us currently there is no uniform evaluation mechanism for the senior design courses I have developed an alternative form compatible with the University s PICES system and used it on an experimental basis in ECE477 for several semesters I will once again attempt to present the idea of a universal senior design evaluation form to the ECE Senior Design Advisory Committee next fall Finally the ECE Administration is encouraged to remain cognizant of the fact that ECE477 is not a standard 3 credit hour load the amount of evaluation and consultation required is several times that of a normal course With 48 students scheduled for Fall 2004 it is important not only to have two faculty involved but also at least 1 0 FTE T A as well an enrollment of 48 students translates into 12 independent project teams Senior Design Report ECE 477 Spring 2004 Course Policies and Procedures Course Description A structured approach to the development and integration of embedded microcontroller hardware and software that provides senior level students with significant design experience applying microcontrollers to a wide range of embedded systems eg instrumentation process control telecommunica
66. tion intelligent devices etc Objective To provide practical experience developing integrated hardware and software for an embedded microcontroller system in an environment that models one which students will most likely encounter in industry Instructors Prof D G Meyer meyer purdue edu Office MSEE 238 Phone 494 3476 and Prof Andrew Jones aj ones purdue edu Office EE 176 Phone 494 3454 Course Teaching Assistants John Leimgruber leimgrub purdue edu and Gilbert Tseng gtseng purdue edu Course web site http shay ecn purdue edu dsml ece477 Course E mail address ece477 ecn purdue edu Office Hours Scheduled office hours will be posted on the course web site other times may be arranged by E mail appointment Please make use of the live consultation hours available rather than E mailing long or detailed questions specific to your project Open Shop Lab Room EE 069 is the laboratory for this course students enrolled in ECE 477 will be given a key code that will provide them with 24 hour access This facility is equipped with expensive state of the art instrumentation students are expected to treat the equipment and furnishings with respect There will be a zero tolerance policy for abuse misuse of this lab anyone who does so will be unceremoniously dropped from the course receive a failing grade and be prohibited from re registering for the course Theft will be prosecuted
67. to create menus and monitor orders submitted by remote devices A graphical user A 12 Senior Design Report ECE 477 Spring 2004 interface was created using Visual Basic with which Mike and Jon had experience The wireless link we needed to allow the base station and remote devices to talk to each other had to be simple and easy to implement Ed had gained experience with RF communication in previous classes Both base station and remote device needed firmware to allow them to handle communication and decode incoming information as well as interface with the LCD module Dan had experience in efficient firmware coding to minimize the memory usage on our microcontrollers c Description of what new technical knowledge and skills if any were acquired in doing the project Throughout this project the group was continually challenged and worked to overcome these obstacles Not only did we gain experience in creating schematics from datasheets we also learned how to integrate these schematics into a PCB layout We came to understand timing diagrams more thoroughly in order to interface the LCD memory and microcontroller Hardware was a source of constant frustration as previously working components would begin to behave strangely when new components were added to the board leading to valuable debugging experience d Description of how the engineering design process was incorporated into the project Once we had established the idea for our
68. udents 2 Are the course outcomes appropriate Yes 3 Are the students adequately prepared for this course and are the course prerequisites and co requisites appropriate If not explain For the most part yes especially as the pipeline from the old ECE 266 267 has emptied 4 Do you have any suggestions for improving this course If so explain The course staff members Prof Meyer Prof Jones John Leimgruber and Gilbert Tseng are very satisfied with the very thorough outcome assessment strategy currently in place The primary improvement that could be realized is better preparation of students in prerequisite courses which has been addressed by reinstituting the Mini Project in ECE 362 and by introducing students to OrCAD the primary schematic capture PCB layout tool used in ECE 270 We are still looking for ways to continue to improve the lab notebooks as well as team dynamics One change we will institute effective Fall 2004 is to add a midterm peer evaluation currently we only have an end of semester peer evaluation
69. urned to us at which point we began to construct our completed circuit from our tested modules After everything was pieced together the product was tested and debugged up to the time of the final presentation Our self evaluation of the project was a success due to the fact that all success criteria were met Evaluation was also made by course staff along the way e Summary of how realistic design constraints were incorporated into the project consideration of most of the following is required economic environmental ethical health amp safety social political sustainability and manufacturability constraints Real world constraints were a major focus of this project The design was made to be as economic as possible while still retaining all the features that were originally intended Help was received here by HKN because they sponsored the project up to 500 this gave us a goal to stay under Environmental and ethical analysis was the topic of a course homework which is available for reference on the group website Safety and reliability analysis was the topic of another homework also available on the group website In short reasonable care was given to ensure that a product was design that was safe reliable and worked as advertised The final product was intended to be economically reasonable in price and easily manufactured with out harmful waste A 16 Senior Design Report ECE 477 Spring 2004 f Description of the mult

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Senior Design Report for ECE 477 – Spring 2004