Safe%Direction - Simon Fraser University
Contents
1. 5 MIEFOCORITONBE Gier i Cr odd rn ub OUO HU HIE nET NEE KEN ROCHE FOR E EEES EEEk ASKERS ESEE 10 5 1 General Requirements suo po vob ue Fare neppa sos ses RV Ds a Ux Dua REUP eae 11 5 2 Usability Requirements 255i chix sso EE vEP nep Fase ck a co sUs s due rbv dva Dux Dea RErV Eu D Yu CEN EE SEE DEER RUNE UV ER 11 5 3 Physical Requirements Ls cesses conn ipi kp eaae na ivo ora beans ar RER Erik kV RU E72 Flux CY x EY uo RV RP DUE 11 6 Ser Interface UNI sess sccsccssssoncenssassnnstonnsnnssushensennesneonconvsavantpetunieasonanesenssaaseneene tes NET UN EUERE aE 12 6 1 General Requirements inae ro epa sri Rr EP EepE RAT spuUPO NEL PE NAEU UPS dcU ANN VUE ECER AN REV swisi 12 6 2 Physical Requirements 1 cic on pns prb VPEXEP FARA MEZ spuZRR ORE Qua QUE Su RPEVE CP eee 12 7 User DOCUMENTAUION MM 13 8 System Testing PIalis o odevoaxes ove ku dpa UP OEF due oa Ia cd Ede dide E QEV Aie ITI bUPEE COO VV QUEE GU MEE MADE 13 8 1 Individ al TD ETE SEDES 13 9 CONC OSIM eee 14 10 Refeteces coii ker RARE ERE DN PIN ON UNE QUU QRRDPNS PRU RER DUR NEEDED RT RES EN DURO NE DRE UP QE EUR QU SETEK KNEE E 15 List of Figures FIGURE 1 THE SYSTEM S DETECTION OVERVIEW 1 3 FIGURE 2 BLOCK DIAGRAM OF THE SYSTEM Copyright 2014 Car Sense Functional Specification of the blind spot monitoring and parking assisting device Car Sense Safe Direction Glossary ISO International Organization for Standardiz2. LED lights and buzzers LED lights and buzzers are connected to the main microcontroller which sets them on and off depending on the data it receives through wires form the blind spot sensors and through wireless waves form the two other microcontrollers one at the front of the car and one at the back The front and back microcontrollers are connected to the parking assist sensors Finally the main microcontroller receives the data from all the sensors in the system and processes them to determine whether a notification shall be given to the driver Copyright 2014 Car Sense Z Functional Specification of the blind spot Car monitoring and parking assisting device sense Safe Direction The following block diagram shows the system s functional process Aurdino Microccontroller Front Sensors Aurdino Microccontroller LED Lights Buzzers Blind Spot Side Sensors Aurdino Microccontroller Rear Sensors Figure 2 Block Diagram of the system 2 2 General Requirements R1 II The device should be applicable to the various types of automobiles R2 II The device shall be portable R3 III The parking assist part of the device shall be separable form the blind spot monitor system R4 III installation and setup shall be easy and may be assembled by the user without the need of a professional R5 III Retail price should be under 300 CAD
3. School of Engineering Science 7 Simon Fraser University far Burnaby BC VSA 1S6 Sense kalmoamm sfu ca Feb 10 2014 Dr Andrew Rawicz School of Engineering Science Simon Fraser University Burnaby British Columbia V5A 1S6 Re ENSC 440 Functional Specification for Safe Direction Dear Dr Rawicz The functional specification document of Safe Direction from Car Sense is attached to the letter Our team is designing a blind spot detection system with parking assistant Safe direction aims to provide users with safe driving experience by notifying them of the existence of an object at their blind spot and help users to park safe and easy Functional specification document comprise of a set of requirements that will help our staff in designing and implementing The Safe Direction project These requirements shall be followed in the phase of proof of concept and production phase By following all the requirements Safe Direction will be ready to hit the market and compete with any equivalent product The Car Sense team consists of five ambitious members who are striving to deliver Safe Direction with perfection Khalid Almoammar Aziz Mikwar and Keren Wang are majoring in electronics engineering Angel Tian is majoring in computer engineering and shaham Shafiei fazel is majoring in systems engineering If you have any concerns please contact us by email at kalmoamm sfu ca or by phone at 778 321 5551 Sincerely Khalid Almoammar K
4. A functional requirement Where xx is the functional requirement number and p is the priority of the functional requirement as denoted by one of three values Copyright 2014 Car Sense IEE Functional Specification of the blind spot Car monitoring and parking assisting device sense Safe Direction The requirement applies to the proof of concept system only Il The requirement applies to both the proof of concept system and the final production system Il The requirement applies to the final production system only 2 System Requirements General requirements applicable to the Safe Direction as a complete system are presented in this section 2 1 System Overview Safe Direction is a portable system which can be installed easily by the user on various types of automobiles on the road The system helps drivers by monitoring their blind spot and giving a notification when an object is within the driver s blind spot In addition the system assists the driver by giving a notification when an object is at close range of the vehicle s front or back side The following drawing shows an overview of the system Copyright 2014 Car Sense Functional Specification of the blind spot monitoring and parking assisting device Car i i Gense Safe Direction Collision warming Collision Figure 1 The System s Detection Overview 1 The systems main components are ultrasonic sensors microcontrollers
5. Copyright 2014 Car Sense Functional Specification of the blind spot Car monitoring and parking assisting device Gense Safe Direction 2 4 Electrical Requirements R6 II Parking assist components shall be powered by the attached battery R7 III Blind spot monitor system in addition to driver notification systems shall be powered by an adapter supplying 10 V DC and connected to the car lighter R8 II Each part connected to a power source shall be supplied with a voltage within the limits 7 12 V 2 R9 II The system shall be operated with a 500mA current supply R10 II The device shall not damage the car s electrical system R 11 II The device shall have protection against excess input current R12 III Blind spot monitor system in addition to driver notification system shall have the ability to be powered by a USB cable connected to a USB outlet R14 II Parking assist system s battery shall be easily accessed and replaced R15 II The power cord responsible for powering the system s main components shall have a minimum length of 1 m R16 II Wires connecting the blind spot monitor sensors and the main microcontroller should have a minimum length of 1 5m R17 II wire connections between each sensor and the corresponding microcontroller shall be easily accessed and replaced Copyright 2014 Car Sense M CEREREM Functional Specification of the blind spot Car monitoring and par
6. and high temperatures R58 III Sensors need to keep the car looking good 4 LEDs and Buzzers Indicators in this project are LEDs and buzzers The driver will be informed of any danger via LEDs and the buzzer In order for the driver to differentiate between the features we are using a buzzer for the parking assist and LEDs for the blind spot monitor 4 1 General Requirements R59 II LEDs must remain off when there are no obstacles on both sides of the car s desired blind spot range Copyright 2014 Car Sense Functional Specification of the blind spot Car monitoring and parking assisting device Gense Safe Direction R60 II LEDs must shine within 5ms of detecting an obstacle on the corresponding side of the car R61 III Within the sensor s range LEDs need to shine at an increasing frequency as the object being detected approaches the car R62 II The buzzer must be off when there are no objects detected within the sensor s range R63 II Buzzers must sound within 5ms of detecting an object within the sensor s range at the front or in the back of the car R64 III Within the sensor s range buzzers need to sound at an increasing frequency as the object being detected approaches the car 4 2 Physical Requirements R65 III LEDs and the buzzer must be easy to install and uninstall R66 II LEDs and the buzzer must work well in any extreme conditions such as rain snow fog low temperatures and high temp
7. weather conditions i e rain snow wind or sun R32 III The system shall be stable and not in any way affected by sudden car movements R33 II The system shall remain operating when connected to a 12V car plug R34 III The system shall detect any objects in the blind spots R35 II The corresponding LED should blink whenever an object is in the blind spots R36 II The buzzers sound shall go on whenever a car is within 1m of the front and back sensors 2 9 Safety Requirements R37 III The LED and buzzer sound shall not distract the driver R38 II The LED and buzzer sound shall go on whenever an object is within their detection range R39 II The microcontrollers shall remain dry at all times RA40 III The system shall be off when car is turned off R41 II The RF transmitter and receiver shall not interfere with other devices 2 10 Performance Requirements R42 II The front and back sensors shall detect objects within 1m of the car R43 II The blind spot system shall send a signal to the microcontroller to light up the LEDs or generate a sound when an object is detected with 5m Copyright 2014 Car Sense e Functional Specification of the blind spot Car monitoring and parking assisting device sense Safe Direction R44 III The blind spot system shall detect any objects passing by with a speed difference of less than 20km hr 2 11 Usability Requirements R45 III The system shall be easy to at
8. ation IHS A business information Company SAE The Society of Automotive engineers Copyright 2014 Car Sense IEE Functional Specification of the blind spot Car monitoring and parking assisting device sense Safe Direction 1 Introduction Car Sense s Safe Direction is an electronic driving aid system that can be installed on any car regardless of the model This product will be much cheaper than what automotive companies currently offer Using sensors this system warns the driver of any objects in their blind spot in addition to the sensors on the bumper which help the driver to avoid hitting other cars and objects while parking This document lays out the functional requirements of the Safe Direction system 1 1 Scope This document describes the functional requirements of the Safe Direction by Car Sense These requirements will be the base of the design process throughout the project 1 2 Intended Audience The functional specifications will be used by all members of Car Sense The requirements mentioned will be used by the hardware group to guide their design and implementation of the circuitry and the hardware In addition this document will serve as a standard against in which the final system will be tested and the management will determine the success of the product based on this document 1 3 Classification Throughout this document the following convention shall be used to denote the functional requirements Rxx p
9. eratures R67 III LEDs must be visible during bright and sunny days 4 R68 III The buzzer shall be loud enough to get the driver s attention 5 Microcontroller The microcontroller is the brain of the system It will coordinate the detection system RF communication and the driver alarm system There shall be three microcontrollers The first one is the main microcontroller which receives all the signals and organizes them to be sent to the output which signals the LED and the buzzer The second microcontroller shall be attached 10 Copyright O 2014 Car Sense IEE Functional Specification of the blind spot Car monitoring and parking assisting device sense Safe Direction to the front sensors to transmit the appropriate signals to the main microcontroller whenever an object is detected Finally the third microcontroller will be attached to the back sensors in similar fashion to the second microcontroller and the front sensors Furthermore the microcontroller shall be powered with 12 V plug 5 1 General Requirements R69 II The system shall shut down when microcontrollers are unplugged R70 II Microcontrollers shall remain dry at all times R71 II Microcontrollers shall output energy to power up sensors LEDs and the buzzer R72 II Microcontrollers shall process the desired inputs and output the required signal 5 2 Usability Requirements R73 II Microcontrollers reset button shall be visible and easy to acces
10. esee 6 2 7 SUA A ee ons ana isunen ORC PNE 6 2 8 Reliability and Durability eeessssosesssooosssssssessssssseessssesssscsssesssocosssssssescssesssesee 7 2 9 Safety Reg irementS vs ciccscscecisedectancsndsscaansssacduscsbsnesansvadssenstvessiecseaiiastaaaserssanadieieswes 7 2 10 Performance Requirements sssssssssssosssssssessssssssessssesssscossesssocosssssesessssessseeee 7 2 11 Usability Requirements ciccincssesdcascisandeds cxdentandssccstantuenssnsssessnwabvesseteaescbscnecuneneewncs 8 2 12 Luxury requirements 5 is cicccecsccicccceiccecsdcotsvecedsntcedenevestntarsieecsc ecnecsshieececvectedsenvess 8 3 SOQNSOMS ois caccicveccccsacccecsdestossanderdcasensscseasiccoausdcsansccantsestsoocssdccistisesoudestcedvetoonnaadceosessosoussaacueasese 8 3 1 General Requirement sivatcidcdsicivesnseicscaducssscstunaesdeneenasscevnatieatssssuendasrasecctesesonaeniseeinas 9 3 2 Physical Requirements sssssseessssssssssssocosssssssesssseeseessssesssscossesssocossessesescssesseeeee 9 A WEDS atid BUZZONS m 9 Copyright 2014 Car Sense Functional Specification of the blind spot monitoring and parking assisting device Car Gense Safe Direction 4 1 General Requiremiertts iore depa tore an aan aba non aug opas ka RE FEVER V Yr ko KO v KoKo ENEN NENW RD 9 4 2 Physical Requirements ceisesberixcepbxsk ira vb ine Fus xb CE ona EX D EFE IVE Ka xr r LV DXX RAN De EVV EAE 10
11. halid Almoammar Chief Executive Officer Car Sense Enclosure Functional Specification for Safe Direction Functional Specification of the blind spot Car monitoring and parking assisting device Sense Safe Direction Executive summary The number of cars on the roads is rising rapidly With the population on the rise and the technology growing and becoming increasingly cheaper we see more and more cars on the road every day Currently there are no Canadian based automotive companies hence most of the Canadian automotive industry consists of assembly plants of foreign automakers from countries such as United States and Japan But regardless Canada is currently the eleventh largest auto producer in the world producing 2 1 million cars per year Considering this huge marketing opportunity and the growing concern for safety both from the consumers we came up with the idea of Safe Direction from Car Sense We all know how automotive companies over charge for options on the vehicles they provide Since they make most of their profit on the car s options they tend to ask for a lot of money for any given option and sometimes in order to get an option you like you might have to purchase a package of options which would cost thousands of dollars In addition this technology is fairly new and it is only being offered for certain luxury models in the past few years Here at Car Sense we make a product that can easily be installed on any vehicle n
12. king assisting device sense Safe Direction 2 5 Mechanical Requirements R18 III Sensors shall be stationary and located at specific locations indicated in the user manual R19 III Microcontrollers shall be located as the user prefers with a recommended location indicated in the user manual R20 III LED lights shall be located as the user prefers with a recommended location indicated in the user manual R21 III Buzzer shall be located as the user prefers with a recommended location indicated in the user manual R22 IIl Components shall not have an apparent affect on the vehicle s outlook 2 6 Environmental Requirement R23 III The device shall operate normally within a temperature range of 40C to 40C R24 III The device shall operate normally under heavy raining conditions R25 III The device shall operate normally under heavy snow conditions R26 III The device shall operate normally under strong windy conditions 2 7 Standards R27 III The system should obey the ISO 26262 standard part 9 3 R28 III The system should obey the IHS standard R29 III The system should obey the SAE standard Copyright 2014 Car Sense IEE Functional Specification of the blind spot Car monitoring and parking assisting device Gense Safe Direction 2 8 Reliability and Durability R30 II The system shall operate normally under regular temperatures R31 III The system shall withstand different
13. nts R85 III The unit shall be placed at the front dashboard where it is easily accessible by the driver R86 III The unit shall be within the driver s sight in order to not affect the drivers focus and driving style 12 Copyright 2014 Car Sense IEE Functional Specification of the blind spot Car monitoring and parking assisting device Gense Safe Direction 7 User Documentation R87 III The user documentation shall include a user manual website and product warranty R88 III The user manual shall be in English French Spanish Portuguese Chinese Persian and Arabic R89 III The user manual shall include detailed instructions for the device installation which can be understood by users with no technical experience R90 IIl Documentation shall include a website that shows information needed by the user technical help and support 8 System Testing Plans The system testing will be separated into individual parts testing and product testing The individual modules specifications will be tested followed by gradually combining the modules and testing them At the final stage the complete unit will be tested as a whole Next stage will be the user likability test of the product based on the ease of use usability and reliability This testing plan will be based on the proof of concept Considering the physical restrains of the system dimensions and proper installation will be based on actual configuration and o
14. o matter the make or the model for a convenient price Our product includes blind spot monitors for both sides and sensors for parking assist This product is under development stage An initial working proof of concept and model of the product will be ready for mid March which will leave us plenty of time for testing troubleshooting and improvements Copyright 2014 Car Sense Functional Specification of the blind spot monitoring and parking assisting device Car Sense Safe Direction Table of Contents Exec tive iniuriae M S i LE aries iiisuio PERMOTI K KESK iv MET T 1 1 2 Intended Audielibess oo gets PD DR ERE CRUER DIEER CORO ded oases FORE ubeGUDO EER EN IOR 1 1 3 Classification eb con UP MUN 1 2 System Requirements ce reor eere re tenere oer nne EE e e see Yao suoro Ho Sue eoo aaa po euo KENEN na vane e en Ro aaa SNR GR 2 2 1 System OvervieW EE 2 2 2 General Requirements ssssssessesssesssssocosssssesessssesseessssesssscsssesssocosssssesescssesesesee 4 2 4 Electrical Requirements sssssessesssssssssosossssssceesssssseesessesssecossesssocosssssseesssseeseesee 5 2 5 Mechanical Requirements eessssssssssssocossssseceesssssseessssesssscsssesssocossessesescsseseseeee 6 2 6 Environmental Requirement ssssssssssssosossssssceessssssssssssesssecossesssososssssscessssesse
15. ptimization after proof of concept and first stage testing 8 1 Individual Testing Ultrasonic sensor Accuracy sensing range and width with respect to object size and distance Wireless module Transmitter and receiver Limitation of the signal distance interference level accuracy of transmitted signal 13 Copyright O 2014 Car Sense e Functional Specification of the blind spot Car monitoring and parking assisting device sense Safe Direction Buzzers Evaluation of the strength of the notification and adjusting it to the most comfortable level for the user LEDs Test the functionality and the warning notifications provided Arduino UNO Transmitter and receiver The wireless communication and accuracy of the board by using the cheapest wireless communication parts Arduino UNO Buzzer Testing with variations of buzzer response time wirelessly and the level of notification that it provides Arduino UNO Ultrasound sensor Testing the programmable limitation of the sensor and code Arduino UNO LCD Ultrasound sensor The reliability and the accuracy of the LCD displaying necessary warnings regarding the distance to objects Unit Testing Combining all individual parts and testing on real environments 1 Ease of installation I Accuracy of the sensor Hl The possible interference IV Wireless delay 14 Copyright 2014 Car Sense Zp Functional Specification of the blind spot Car monitoring and pa
16. rking assisting device sense Safe Direction 9 Conclusion The functional specification document of Safe Direction demonstrates the requirements and standards that will help our staff in designing and implementing The Safe Direction project Our team is working towards the proof of concept model that is expected to be ready by April 15 2014 The proof of concept model is designed to cover all the requirements marked with I or Il 15 Copyright 2014 Car Sense IEE Functional Specification of the blind spot Car monitoring and parking assisting device Gense Safe Direction 10 References 1 Daimler Chrysler http electronicdesign com site files electronicdesign com files archive electronicdesign com files 29 19827 fig_04 gif 2 Arduino Arduino Uno Data http arduino cc en Main arduinoBoardUno UwLWGEJdWCY 3 Paul Garden DesignWare Technical Bulletin Automotive Safety Achieving ISO 26262 Comliance with Processor IP 4 U S department of energy Use of occupancy sensors in LED parking lot and garage applications early experiences http apps1 eere energy gov buildings publications pdfs ssl 2012 gateway sensors pdf oct 2012 16 Copyright O 2014 Car Sense
17. s R74 III Microcontrollers shall not be reprogrammable R75 II Microcontrollers on off LED shall be visible 5 3 Physical Requirements R76 II Microcontrollers shall be connected securely to sensors LEDs and the buzzer R77 III Microcontrollers shall be stationary and resistant to car shaking R78 III Microcontrollers shall be well attached to the car R79 II Microcontrollers shall not be physically damaged 11 Copyright 2014 Car Sense IEE Functional Specification of the blind spot Car monitoring and parking assisting device Gense Safe Direction 6 User Interface Unit The user interface unit shall consist of set of buttons to control the functionality of the overall system The user interface shall enable the user to turn the notifications of the whole system on or off Also the user shall be able to individually turn the notification of parking assistance or blind spot monitoring off and on 6 1 General Requirements R80 II The user interface unit shall consist of push buttons to perform the desired actions R81 II User interface unit shall enable the driver to control the system s notifications by switching them on or off as desired R82 II The unit shall be easy to use by the user without the need for referring to the user manual R83 III Each button shall have a label next to it indicating its function R84 II The unit shall be connected to the main processor 6 2 Physical Requireme
18. tach and remove R46 II The system shall be turned on off easily R47 III The LEDs intensity shall not be too high to avoid driver distraction RA48 III The buzzers sound shall not be too loud to avoid driver distraction 2 12 Luxury requirements R49 III The system in general including the LEDs shall be covered in a nice and neat casing R50 III The buzzer speaker shall be covered nicely R51 III The sensors shall not disfigure the car s design or style 3 Sensors Ultrasound Sensors are used to detect the surrounding objects They will send the appropriate signal to the microcontrollers to process and warn the user of any obstacles and possible dangers In this project we plan to use 8 sensors 3 on the front bumper 3 on the back bumper and 1 on each side of the car Copyright 2014 Car Sense IEE Functional Specification of the blind spot Car monitoring and parking assisting device Sense Safe Direction 3 1 General Requirement R52 II The range of the sensors shall to be long enough to preform the desired detection R53 II The angle range of the sensor must cover the whole blind spot area 4 R54 II Sensors must respond immediately with no delay 4 R55 II Sensors must react in a very short period 4 3 2 Physical Requirements R56 III The sensors must be easy to install and uninstall R57 II Sensors shall work well in all extreme conditions such as rain snow fog low temperatures
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