System Requirements Specification
Contents
1. Watering Scheduler History Duration Completed 07 13 14 2 45PM 38 Zone 2 Figure 2 5 Scheduler interface for sprinkler system 11 4 2014 SmartGrass 15 System Requirements Specification HICS Home Irrigation Control System 3 Customer Requirements This section details the hardware and software requirements set by the customer for HICS Each item listed will review in detail the description source constraints standards and priority necessary for complete functionality 3 1 Central Control Unit 3 1 1 Description The central control unit is responsible for all communication between the web application soil moisture sensors and water valves The control unit will transmit the readings from the soil moisture sensors and report the data to the web application The control unit also controls the water valves which sets the flow of water to the sprinkler system 3 1 2 Source Team SmartGrass 3 1 3 Constraints Wires from the water valves must be plugged into the control unit The control unit also requires power from an outlet and must be connected to the internet 3 1 4 Standards NEMA 5 15R power connector cat5e Ethernet connector 3 1 5 Priority I Critical Priority 3 2 Soil Moisture Sensors 3 2 1 Description In ground sensors that monitor and report soil moisture levels 3 2 2 Source Team SmartGrass 3 2 3 Constraints Must be connected directly to the central control unit and must be placed in the ground2. 2 Control Unit Housing 4 1 1 Description The components of the control unit including its accessories will be contained inside a mountable hard plastic container 4 1 2 Source SmartGrass 4 1 3 Constraints This component needs to be wall mountable and must be packaged in a convenient form factor for the user 4 1 4 Standards None 4 1 5 Priority I Critical Priority Soil Moisture Sensors Packaging 4 2 1 Description 4 Soil sensors will be included in the final packaging of HICS They will be located within their own boxes and will have corresponding documentation that describes their proper installation The user will be able to purchase additional soil moisture sensors and add them to their system 4 2 2 Source Nuts and Bolts Hardware 4 2 3 Constraints The user will be responsible for the proper installation of the soil sensors according to the included instructions 4 2 4 Standards None 4 2 5 Priority 3 Moderate Priority 11 4 2014 SmartGrass 21 System Requirements Specification HICS Home Irrigation Control System 4 3 Rain Sensor Packaging 4 3 1 Description 1 Rain sensor will be included in the final packaging of HICS It will be located within its own box and will have corresponding documentation that describes its proper instillation 4 3 2 Source Nuts and Bolts Hardware 4 3 3 Constraints The user will be responsible for the proper installation of the rain sensor ac
3. Constraints Rain sensor must be mounted outside and connected to the control unit 3 8 4 Standards None 3 8 5 Priority 2 High Priority 11 4 2014 SmartGrass 18 System Requirements Specification HICS Home Irrigation Control System 3 9 3 10 3 11 Web Hosting Server 3 9 1 Description There will be a server hosting our web application with an associated URL for domain user access 3 9 2 Source Team SmartGrass 3 9 3 Constraints A subscription to a web hosting service must be acquired A URL must also be registered and associated with the domain 3 9 4 Standards None 3 9 5 Priority 1 Critical Priority Database Management System 3 10 1 Description There will be a DBMS that will store all data from soil sensor readings as well as all the information for the web application This information includes user account information settings reports and weather data necessary for the application to perform as expected 3 10 2 Source Team SmartGrass 3 10 3 Constraints None 3 10 4 Standards None 3 10 5 Priority 1 Critical Priority Device Registration 3 11 1 Description A user must register their HICS device with their account in order to interface with it via the web application The central control unit will have a unique serial number on it that will be used to register the device to a user account 3 11 2 Source Team SmartGrass 3 11 3 Constraints The central cont
4. from team 0 3 2 11 4 14 conference call members incorporated into SRS 1 0 0 11 4 14 Minor tweaks made during final walk Final inspection and walkthrough of e through of SRS document document 11 4 2014 SmartGrass System Requirements Specification HICS Home Irrigation Control System List of Figures Figure Title Page 2 1 High level concept diagram 8 2 2 User registration interface 12 2 3 User login interface 13 2 4 Home dashboard interface 14 2 5 Schedule interface for sprinkler system 15 10 1 Valve control diagram 40 10 2 User control diagram 40 10 3 Check status diagram 41 10 4 User Admin control diagram 41 11 4 2014 SmartGrass System Requirements Specification HICS Home Irrigation Control System List of Tables JE eH nmr 2 1 External inputs and outputs 11 11 1 Individual part cost analysis 44 11 2 Function point analysis 45 11 3 Adjustment Factors 45 11 4 Jones First Order Estimation class averages 46 11 5 Jones First Order Estimation 46 11 6 Basic CoCoMo estimation coeffiecients 46 11 7 Semi detatched Basic CoCoMo estimation 47 11 4 2014 SmartGrass System Requirements Specification HICS Home Irrigation Control System 1 Product Concept This section describes the purpose use and intended user audience for the Home Irrigation Control System abbreviated HICS HICS is an intelligent home irrigation system that collects soil moisture readings from in ground sensors and analyzes the data to determi
5. has also provided our team with a positive outlook for the scope This assessment is based on our research of each individual components and our team s technical background with each of them While we have a few team members who have great experience in microcontrollers our concern is with the interaction between the sensors and microcontroller This assessment is based on the lack of knowledge and experience with soil and rain sensors This initial assessment is based purely off the research we have done regarding the sensors and the processes of gathering readings as data In conclusion after analyzing the requirements and prioritizing them based off importance we have evaluated that the project is within scope and the probability of completion before the deadline is high 11 2 Research Our primary focus on research has been the components we are unfamiliar with Our team has been researching different soil sensors to determine which will be the best fit for HICS This research has been evaluated and compared to the other hardware components that will interface with the sensors We have reviewed tutorials and other projects online to study how the interactions between the sensors and controller take place This research has aided us in deciding which microcontroller is optimal for the project and our budget The information we lack in home irrigation has been another primary focus of our research Fortunately our sponsor is very knowledgeable and h
6. in close proximity to an irrigation zone 3 2 4 Standards None 3 2 5 Priority 1 Critical Priority 11 4 2014 SmartGrass 16 System Requirements Specification HICS Home Irrigation Control System 3 3 Web Application 3 3 1 Description The web application will be used to interface with the central control unit The application is responsible for scheduling watering times as well as interfacing with the central control unit to control the water valves The web application will be built with a scalable interface to enable the same functionality on a mobile device as it would on desktop computer while maintaining a similar look and feel 3 3 2 Source Team SmartGrass 3 3 3 Constraints Must be hosted on an online server and maintain a maximum uptime Access to the application requires an internet connection and a supported web browser 3 3 3 Standards None 3 3 5 Priority 1 Critical Priority 3 4 Watering Scheduler 3 4 1 Description The web application can schedule watering times and durations for the sprinkler system The scheduler will display upcoming watering schedules and allow users to create edit or delete them 3 4 2 Source Team SmartGrass 3 4 3 Constraints None 3 4 4 Standards None 3 4 5 Priority 1 Critical Priority 3 5 Soil Moisture Reports 3 5 1 Description The web application will generate visual reports of the current soil moisture levels The reports will be generated as graphic rep
7. on the hardware Our software engineer and two computer scientists will be focused on the microcontroller programming and the web application We have decided to assign two programmers on the microcontroller since low level C programming is one of our weakest skills We feel this tradeoff will not hinder the web application progress because of the experience we have in web development 11 6 Schedule Analysis For scheduling analysis our first method of estimation used was the Jones First Order Estimate Using this method we determined our project characteristics and generated our unadjusted function point total based off the cumulative totals 11 4 2014 SmartGrass 45 System Requirements Specification HICS Home Irrigation Control System Program Characteristic Low Medium High Totals Complexity Complexity Complexity Number of Inputs 5x3 2x3 0x6 21 Number of Outputs 3x3 1x5 0x7 14 Inquiries 2x3 0x3 1x6 12 Logical Internal Files 2x7 1x10 0x15 24 External Interface Files 1x5 2x7 1x10 29 Unadjusted Function Point Total 100 Table 11 2 Function Point Analysis Table 11 2 displays the various function points required by HICS Our unadjusted total ended up at 100 with an emphasis on the logical internal and external interface files Once we had established our unadjusted total we evaluated our adjustment factor by determining our influence values based on a priority rating system General System
8. registered and the user logs into the web application using their account credentials 10 2 View Change HICS Settings 10 2 1 Scenario The user will access the mobile web application from a web browser After logging in successfully the user will be taken to home dashboard see Figure 2 4 From this page the user must click tap on the menu dropdown and select the Settings option The user will be directed to the account settings page where they can view or update their HICS settings for auto off time and alerts opt in 10 2 2 Actor s User 10 2 3 TUCBW The user clicks taps on the menu button and selects the Settings option 10 2 4 TUCEW If any settings were changed the information is updated in the database and the changes are displayed on the settings page 11 4 2014 SmartGrass 37 System Requirements Specification HICS Home Irrigation Control System 10 3 10 4 10 5 User Sign In 10 3 1 Scenario The user will access the web application from a web browser and be directed to the login screen see Figure 2 3 At the login screen the user will enter their username and password and click tap the login button 10 3 2 Actor s User 10 3 3 TUCBW The user enters their login credentials and clicks on the Login button on the home screen 10 3 4 TUCEW The user logs in with their account credentials and is directed to the home dashboard see Figure 2 4 Check Status of HICS 10 4 1
9. total and raised it to the power of the corresponding class averages Jones First Order Estimation Best Case Average Case Worst Case Adjusted Function 10510 33 10510 35 10510 38 Point Total Total Months 4 64 5 09 5 86 Table 11 5 Jones First Order Estimation Table 11 5 shows the estimated number of months for our project for a best average and worst case For the best case estimation our project should take around 5 months to complete At the worst case the project is estimated to be completed in approximately 6 months The second method we used for schedule estimation was a nominal semi detached CoCoMo evaluation Coefficient a b c d 3 0 1 12 2 5 0 35 Table 11 6 Basic CoCoMo Estimation Coefficients Semi detached As a team we decided to set our SLOC for our low side aggressive estimate to approximately 3 000 lines To evaluate best and worst case scenarios as we did with our Jones First Order estimation we decided to also set a high side conservative SLOC to 5 000 Using these values we used the CoCoMo equations to estimate our effort in person months and duration in months values Aggressive Estimate E 3 0 3t12 D 2 5 E 5 Conservative Estimate E 3 0 5t12 D 2 5 E 35 The values for aggressive and conservative effort and duration CoCoMo estimations are shown in Table 11 7 11 4 2014 SmartGrass 47 System Requirements Specification HIC
10. 10 Database Management System 3 12 Region Grouping 9 5 2 Verification Procedure Each valve will have a soil sensor that detects the moisture of 11 4 2014 that zone The user can water any individual zone or region any time via the web application see section 9 2 Users will have the ability to create Regions which are groups of zones For example the user could group all zones where the valves lead to backyard and they could define that region as backyard This allows users to control watering for multiple zones by regions SmartGrass 35 System Requirements Specification HICS Home Irrigation Control System 9 6 Verify Watering Schedule 9 6 1 Requirement s addressed Requirement Number Name 3 1 Central Control Unit 3 3 Web Application 3 10 Database Management System 9 6 2 Verification Procedure Users have the option of scheduling watering time instead of manually toggling their sprinkler system as seen in section 9 2 To create or modify a schedule the user must successfully login to the application and navigate to the schedules page see Figure 2 5 From the schedules page users can create edit or delete watering schedules for each zone This page also provides the user with past watering events and displays their duration and completion To verify a watering schedule the user must create a schedule by clicking on the calendar icon seen in Figure 2 5 They must then sele
11. 2 e ele TT EE 20 SAS Or E uekte eske 20 4 PACKAGING REQUIREMENTS ennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 21 4 1 Control Unit HOUSING EEN 21 4 2 Soil Moisture Sensors Packaging 21 4 3 Rain Sensor Packaging issues 22 4 4 Connecting Cables siennes 22 45 SoftWare e ee e EE 22 11 4 2014 SmartGrass System Requirements Specification HICS Home Irrigation Control System 4 6 User Manual inicie 23 5 PERFORMANCE REQUIREMENTS ennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 24 5 1 SensorAccuacd aure Eee 24 5 2 SC Re E 24 5 3 Communication Between the Web Application and Central Control Unit 25 5 4 Communication Between the Soil Moisture Sensors and Central Control Unit 25 5 5 Device Power Malfunction vic eege nn donne tee eG ieee tendons 25 6 SAFETY REQUIREMENTS scaricare 26 6 1 Soil Moisture Sensor Insulation nnt 26 6 2 Central Control Unit Temperature is 26 6 3 Proper Wiring of Central Control Unit 27 7 MAINTENANCE AND SUPPORT REQUIREMENTS 28 7 1 Sensor Maintenance iii 28 7 2 Software Maintenance iii 28 7 3 Source Code Documentation issus 29 7 4 Scalability rine Awe eile ie Glee Con en Gln A ed ee es 29 8 ERHERREOUIREMENTES Geert EECH 30 8 1 Mapping the Soil Moisture Sensors to Irrigation Valves ooococonnccccnnnocccccanonnncnanonnncnnnos 30 8 2 Browser Suppo
12. 2 3 3 Constraints Weather reports would have to be very accurate to the location of the central control unit 11 4 2014 SmartGrass 49
13. Characteristics Priority Rating 0 5 Data Communications 5 Distributed Data Processing Performance Heavily Used Configuration Transaction Rate On Line Data Entry End User Efficiency On Line Update Complex Processing Reusability Installation Ease Operational Ease Multiple Sites Facilitate Change ME O2 C2 C2 C UC U C2 CI U2 LA o Total Adjustment Factor 1 05 Table 11 3 Adjustment Factors The adjustment factor was determined by first totaling the rating values Table 11 3 shows each multiplier and the priority rating it received The total was used to determine the influence factor Adjustment Factor 0 65 3 100 1 05 After finding the adjustment factor we used its value to determine the function point total by multiplying it by the unadjusted function point total Adjusted Function Point Total 1 05 100 105 According to Jones First Order Estimation the class averages can be seen in Table 11 3 11 4 2014 SmartGrass 46 System Requirements Specification HICS Home Irrigation Control System Kind of Software Best in Class Average Worst in Class Systems 0 33 0 35 0 38 Table 11 4 Jones First Order Estimation Class Averages We have evaluated our product falls under the Systems software type based on the nature of the product To calculate the calendar months for estimation we took our function point
14. Department of Computer Science and Engineering The University of Texas at Arlington System Requirements Specification CS Smart Y Grass Project Home Irrigation Control System Team Members Belachew Haile Mariam Gautam Adhikari Jeremiah O Connor Tung Vo Last Updated 11 3 2014 System Requirements Specification HICS Home Irrigation Control System TABLE OF CONTENTS EE giereg tee ee 5 LIST OF TABLES ad 6 1 PRODUCT CONCEPT s s 2 2 2 c 2 c scc22 2 2cccrcerreezrcsrssarreanasdrgnsrde 7 1 1 PUIPOSE ANG USO EE EEE ET EE ah 7 1 2 Intended Agence gut 2722222221622 ipen in t ng pcs 7 2 PRODUCT DESCRIPTION AND FUNCTIONAL OVERVIEW 8 2 1 Features and Functions denne drevne de 3 ils 8 2 2 External Inputs and Outputs sisi 10 2 3 Product Interfaces iii iaa 12 3 CUSTOMER REQUIREMENTS oncicioonaiionnaionanonadananonanananonidananonadanancnadananadas 16 3 1 er te NL EE 16 9 2 Soll Moisture Sensorsiunanun enables A dre i nat 16 3 3 Web Application vn ts kastene tn entente laste i sd 17 3 4 Watering SchedUl r lt 6 5 iii 17 3 5 SOI Moisture R ports raven da 17 3 6 User a addere ate eel EE eee tei ad 18 3 7 Active Status asistencia heals ned ee eee 18 3 8 Ran Sensor STE 18 3 9 Web elen EE 19 3 10 Database Management System 19 3 11 Device HegistratiOn lt lt SH HH issues 19 3 1
15. S Home Irrigation Control System Low Side High Side Aggressive Conservative Effort person 10 27 18 20 months Duration months 5 64 6 90 People Required 1 82 2 63 Table 11 7 Semi detached Basic CoCoMo Estimation Based on our CoCoMo estimations for duration the number of months required to complete the project will be best case 5 64 months and worst 6 90 months Given the timeline for our project and the number of members in our team the effort and duration required for completion seem feasible compared to the average case between the aggressive and conservative estimations The CoCoMo estimations for our project were calculated to be slightly less optimistic than our estimations using Jones First Order Estimation We decided to take our estimation a step further by using the Weiss amp Wysocki Sanity Test to average our estimations The Sanity Test formula is as follows where O is the optimistic estimation M is the nominal estimation and P is the pessimistic estimation 0 3M P Using the formula above we set our O to be 4 64 our M to be 5 86 and our P to be 6 90 and performed the following calculation y 464 35 86 6 90 S 4 84 months Based on the result of the Sanity Test the estimated number of months for competition is 4 84 Given the feasibility analysis for our project and considering the timeline for Senior Design I and II we believe that project compl
16. S Home Irrigation Control System 6 3 Proper Wiring of Central Control Unit 6 3 1 Description The central control unit will be powered from an external wall plug The source will be 120v and improper wiring could leave the user exposed to currents in the range of 15 20 amps Itis crucial that the control unit is wired properly to accept this input and cause no harm to the device or the user 6 3 2 Source Team SmartGrass 6 3 3 Constraints None 6 3 4 Standards NEMA 5 15R power connector 6 3 5 Priority 1 Critical Priority 11 4 2014 SmartGrass 27 System Requirements Specification HICS Home Irrigation Control System 7 Maintenance and Support Requirements This section details the requirements for ongoing use of HICS after its final delivery to the user Achieving maximum long term performance is the key to reducing product maintenance These requirements aim to minimize system errors and hardware failures 7 1 Sensor Maintenance 7 1 1 Description The soil and rain sensors will be replaceable in the event of hardware failure 7 1 2 Source Nuts and Bolts Hardware 7 1 3 Constraints Replacement sensor must be compatible with the device 7 1 4 Standards None 7 1 5 Priority 2 High Priority 7 2 Software Maintenance 7 2 1 Description All source code files and relevant documentation must be available for software maintenance and troubleshooting The required files and documentation will be a
17. Scenario The user will access the web application from a web browser After logging in successfully the user will be taken to home dashboard see Figure 2 4 of their HICS and be able to view its current status 10 4 2 Actor s User 10 4 3 TUCBW The user logs in successfully 10 4 4 TUCEW The user will see the status of their home irrigation system The local weather conditions active status of water valves and most recent reading of their soil moisture levels will be displayed see Figure 2 4 Turn On Off Water Valves 10 5 1 Scenario The user will access the web application from a web browser After logging in successfully the user will be directed to the home dashboard see Figure 2 4 From this page there is a switch that allows users to turn on or turns off water valves for each zone 10 5 2 Actor s User 10 5 3 TUCBW The user clicks on the switch to turn on or turn off the water valve 10 5 4 TUCEW The water valve will be turned on or off according to the action of user 11 4 2014 SmartGrass 38 System Requirements Specification HICS Home Irrigation Control System 10 6 Check Watering History 10 6 1 Scenario The user will access the web application from a web browser After logging in successfully the user will be directed to the home dashboard see Figure 2 4 From this page the user must click tap on the menu dropdown and select the History option The user will be directed to the schedul
18. Sign In Web Application Base Create Schedule Web Application Base User iew Change Schedule Web Application Base Figure 10 2 User control diagram 11 4 2014 SmartGrass 41 System Requirements Specification HICS Home Irrigation Control System Moisture Reading Valve Status User Display Status Web Application Base Figure 10 3 Check status diagram User Account Management Delete User Account User Administrator Change Account Settings Figure 10 4 User Admin control diagram 11 4 2014 SmartGrass 42 System Requirements Specification HICS Home Irrigation Control System 11 Feasibility Assessment This section evaluates the expectations of HICS and all its components careful analysis of each component will determine feasibility assessments for the outcome of the project In order to provide a more detailed report each individual analysis has been examined below 11 1 Scope Analysis The overall scope of HICS has been examined and discussed by all team members and has been determined to be reasonable given the project deadline After examining the requirements with the highest priorities we determined the majority of the work will be with the web application Our team has two members that have had years of real world experience developing large scale web applications for companies so the outlook for the web application work schedule is very feasible Research on the hardware components of HICS
19. URE ITEMS ura ad 49 12 1 Wireless Sensors Network oonoccnicccnnnnninoccnnncccconccnnoncnonnnnnanc ccoo rn cnn ran nnn cnn canaria nnnn nn nnncccns 49 12 2 Standalone Mobile AppliCafiOIn sis 49 12 3 Upcoming Weather Alerts su 49 11 4 2014 SmartGrass System Requirements Specification HICS Home Irrigation Control System Document Revision History Revision Revision SC 0 1 3 102514 Updated Use Cases section dia 198600 EeviiensfrEtoesetOfDellammal PR te releer suggestions From Professor O Dell s review Updated calculations COCOMO 0 1 5 10 29 14 Jones 1 Order Weiss amp Wysocki Updating calculations S reflect Th ng accurate estimation Sanity Test 0 2 1 10 31 14 Updated sections 10 and 12 to reflect Updating sections to describe new product project changes design Updated sections 1 2 3 5 and 11 to Updating sections to describe new product 10 30 14 reflect project changes design Updated sections 7 8 and 9 to reflect Updating sections to describe new product 0 2 2 11 1 14 project changes design 11 2 14 Minor formatting changes made Uniform look and feel Restructuring of requirements into Break big requirements into more 0 3 0 11 3 14 more concise sections manageable sections and vice versa Revisions made to sections based on Incorporate feedback from Team 0 3 1 11 3 14 peer review TimeKeepers Revisions made based on team Get any last minute input
20. application Toggle Water er The user inputs an action to immediately The water valve will toggle between open Valve P start or stop watering and closed to start or stop watering The user can generate reports to displa The user inputs parameters to display p a el Reports Input Output Ze information about current past soil readings specific data about their HICS f and watering schedules Table 2 1 External inputs and outputs 11 4 2014 SmartGrass 11 System Requirements Specification HICS Home Irrigation Control System 2 3 Product Interfaces 2 3 1 User Registration gt e A hip Avww smarigrass com register Smart fy Grass Enter your email Enter your password Confirm your password Enter your product serial number nn Figure 2 2 User registration interface 11 4 2014 SmartGrass 12 System Requirements Specification HICS Home Irrigation Control System 2 3 2 User Login gt e ft Mp JAVA SMarigrass com Enter your password ee Figure 2 3 User login interface 11 4 2014 SmartGrass 13 System Requirements Specification 2 3 3 Home Dashboard Y Weather sunny H 88 L 62 Soil Moisture ZC E Next Scheduled Watering Zone 1 Zone 2 ma HICS Home Irrigation Control System 13 Valve Status Figure 2 4 Home dashboard interface 11 4 2014 14 SmartGrass System Requirements Specification HICS Home Irrigation Control System 2 3 4
21. as even provided us with a resource that runs water conservation for the City of Arlington He has been extremely helpful in gathering information for our team to research and has provided us with multiple resources to help minimize the learning curve 11 4 2014 SmartGrass 43 System Requirements Specification HICS Home Irrigation Control System 11 3 Technical Analysis A thorough technical analysis has been a priority task for our team We determined before purchasing or finalizing any components we first needed to examine what our technical strengths and weaknesses were While no one on the team has had any experience with home irrigation systems we all have had experience with the majority of the individual components that it consists of The primary hardware components are the central control unit soil sensors rain sensor and water valve system We have carefully diagramed and examined each piece of hardware to determine how they will interact and function together We have determined that the microcontroller is the component that our team is most familiar with We have two team members who have had extensive work with microcontrollers primarily Arduino and Raspberry Pi This experience will enable our team to focus our hardware research on the sensors and water valves system The central control unit will consist of a microcontroller that will be connected to each water valve and will also be responsible for powering the soil and rain sens
22. be properly placed and installed in order to ensure this functionality 5 2 4 Standards None 5 2 5 Priority 3 Moderate Priority 11 4 2014 SmartGrass 24 System Requirements Specification HICS Home Irrigation Control System 5 3 5 4 55 Communication Between the Web Application and Central Control Unit 5 3 1 Description The user will be able to set watering schedules through the web application to send a signal to the central control unit to initiate watering This must happen in timely manner to ensure consistency between the scheduled start end times and the actual start end times 5 3 2 Source Team SmartGrass 5 3 3 Constraints None 5 3 4 Standards None 5 3 5 Priority 2 High Priority Communication Between the Soil Moisture Sensors and Central Control Unit 5 4 1 Description The soil moisture sensors will communicate with the central control unit to relay information about soil moisture levels This must be accomplished periodically in an accurate and timely manner in order to avoid errors and to ensure consistency throughout the system 5 4 2 Source Team SmartGrass 5 4 3 Constraints None 5 4 4 Standards None 5 4 5 Priority 2 High Priority Device Power Malfunction 5 5 1 Description If the server fails to receive communication from the central control unit for a specified period of time it will notify the user that the system 1s offline 5 5 2 Source Nut
23. cording to the included instructions 4 3 4 Standards None 4 3 5 Priority 3 Moderate Priority 4 4 Connecting Cables 4 4 1 Description 1 Power cable and 1 Ethernet cable will be included in the final packaging of HICS Their intended purpose is to be used with the central control unit 4 4 2 Source Team SmartGrass 4 4 3 Constraints None 4 4 4 Standards NEMA 5 15R power connector catSe Ethernet connector 4 4 5 Priority 3 Moderate Priority 4 5 Software Application 4 5 1 Description The HICS software should be a stand alone web application that requires no set up from the user The user must register an account with a valid product serial number to access the web application Once they are logged into their account and their device has been connected they will be able to access the features of the HICS 4 5 2 Source Team SmartGrass 4 5 3 Constraints The user needs an active internet connection in order to interface with the web application The central control unit must be connected to the internet via the included Ethernet cable and registered with the user s account before it can be controlled 4 5 4 Standards None 4 5 5 Priority 1 Critical Priority 11 4 2014 SmartGrass 22 System Requirements Specification HICS Home Irrigation Control System 4 6 User Manual 4 6 1 Description A user manual will be presented to the user that details the use and operation of HICS It will be provided in th
24. ct a date and time for watering and select whether the event should reoccur Once a time has been scheduled they must simple visit to scheduled zones during their watering time and observed the activity 11 4 2014 SmartGrass 36 System Requirements Specification HICS Home Irrigation Control System 10 Use Cases This section specifies how the end user will interact with HICS at home and remotely through the web application brief scenario on how each use case will be performed is also included Use case diagrams are found at the very end of the section and are grouped by function Each use case listed below will identify the scenario the actor when the use case begins TUCBW The Use Case Begins With and when the use case ends TUCEW The Use Case Ends With 10 1 Device and User Registration 10 1 1 Scenario After installing a HICS product at home users are required to register their device via the web application The user will access the web application from a web browser and be directed to the login screen see Figure 2 3 After clicking on the Register button the user will be directed to the registration page see Figure 2 2 to register their product and create an account After registering the device will be activated for the user to start controlling and interacting with 10 1 2 Actor s User 10 1 3 TUCBW The user clicks on the Register button on the home screen 10 1 4 TUCEW The HICS product is
25. e final packaging as a CD ROM and will also be made available online via the web application 4 6 2 Source Team SmartGrass 4 6 3 Constraints The manual will only be provided in English 4 6 4 Standards None 4 6 5 Priority 3 Moderate 11 4 2014 SmartGrass 23 System Requirements Specification HICS Home Irrigation Control System 5 Performance Requirements This section specifies the requirements necessary for the optimal performance of HICS These requirements are in place to ensure that watering schedules are resourceful and efficient to optimize water conservation Performance requirements are also in place to encompass overall responsiveness and reliability of the system 5 1 5 2 Sensor Accuracy 5 1 1 Description Proper sensor readings of soil moisture levels must be captured to ensure accurate and efficient watering schedules This requires solid construction of the sensor modules and proper software analysis of the data provided by the sensors 5 1 2 Source Team SmartGrass 5 1 3 Constraints Soil moisture sensors must be properly installed according to the provided instructions 5 1 4 Standards None 5 1 5 Priority 2 High Priority Rain Detection 5 2 1 Description In the event of rainy weather the rain sensor must quickly transmit an alert to the control unit to interrupt or delay any active watering 5 2 2 Source Team SmartGrass 5 2 3 Constraints The rain sensor must
26. es page see Figure 2 5 where they can view watering history by zone region or valve 10 6 2 Actor s User 10 6 3 TUCBW The user clicks taps on the menu button and selects the History option 10 6 4 TUCEW The user will be directed to the schedules page see Figure 2 5 where they can view past watering events 10 7 Schedule Watering 10 7 1 Scenario The user will access the web application from a web browser After logging in successfully the user will be directed to the home dashboard see Figure 2 4 From this page the user must click tap on the menu dropdown and select the Schedules option The user will be directed to the schedules page see Figure 2 5 where they can view create or change watering schedules for each zone 10 7 2 Actor s User 10 7 3 TUCBW The user clicks taps on the menu button and selects the Schedules option 10 7 4 TUCEW The user will save or change a schedule and the system will update according to the input 10 8 Create Change Watering Region 10 8 1 Scenario The user will access the web application from a web browser After logging in successfully the user will be directed to the home dashboard see Figure 2 4 From this page the user must click tap on the menu dropdown and select the Regions option The user will be directed to the schedules page see Figure 2 5 where they can create edit or delete regions 10 8 2 Actor s User 10 8 3 TUCBW T
27. etion is feasible All estimations for our project were done using overestimated assumptions to ensure our team has enough time given any setbacks Also our team is still very new at schedule estimation and we are sure there will be some deviation in either direction In both estimations the weeks are defined for 40 work hours which isn t possible for every member of our team due to schedule constraints However even given the conservative estimation our maximum people required would be around 3 Since our team consists of 4 members if we divide the aggressive and conservative times by the additional member we get 2 57 months for an aggressive estimation and 4 55 months for a conservative estimation If we cut our monthly hours in half to account for our teams schedule our estimation for completion averages out to around 7 months which we feel is a feasible estimation for completion Considering all the above factors we strongly believe we can produce a working product that meets all specifications and remains under our given budget 11 4 2014 SmartGrass 48 System Requirements Specification HICS Home Irrigation Control System 12 Future Items This section details the additional future requirements for HICS that may not currently be feasible due to time money constraints However these requirements would serve as valuable additions to HICS given the opportunity 12 1 Wireless Sensors Network 12 1 1 Description Soil moisture sensors cou
28. he user clicks taps on the menu button and selects the Regions option where they can create edit or delete regions 10 8 4 TUCEW The region will be created or updated according to the input and the changes will be displayed to the user 11 4 2014 SmartGrass 39 System Requirements Specification HICS Home Irrigation Control System 10 9 User Account Management 10 9 1 Scenario The user or admin will access the mobile web application from a web browser After logging in successfully the user or admin will be directed to the home dashboard see Figure 2 4 From this page the user or admin must click tap on the menu dropdown and select the Account Management option The user or admin will be directed to the account management page where they can view or update their account device information as well as delete their account 10 9 2 Actor s User Administrator 10 9 3 TUCBW The user or admin clicks taps on the menu button and selects the Account Management option where they can change the settings for their account 10 9 4 TUCEW The changes to the account will be made and the results will be displayed to the user 11 4 2014 SmartGrass 40 System Requirements Specification HICS Home Irrigation Control System Valve Control Switch Valve On Off Relay Based User Switch Valve On Off Web Application Base Figure 10 1 Valve control diagram Create User Account Web Application Base User
29. l allow for administrative accounts to create edit and delete user accounts and their associated devices 8 6 2 Source Team SmartGrass 8 6 3 Constraints None 8 6 3 Standards None 8 6 5 Priority 2 High Priority 11 4 2014 SmartGrass 32 System Requirements Specification HICS Home Irrigation Control System 9 Acceptance Criteria This section specifies the requirements related to each product function as it is to be demonstrated to the customer Each criteria defined in this section is required for in order for HICS to be accepted 9 1 Verify User Account 9 1 1 Requirement s addressed Requirement Number Name 3 3 Web Application 8 6 User Administration Account 3 6 User Login 3 10 Database Management System 9 1 2 Verification Procedure The user will open a web browser where they will create an account by clicking on the Register button on the login page see Figure 2 3 The user will then enter their credentials into the form The system will validate the information provided by the user and successfully create the account if the information is valid 11 4 2014 SmartGrass 33 System Requirements Specification HICS Home Irrigation Control System 9 2 Verify Water Control 9 2 1 Requirement s addressed Requirement Number Name 3 1 Central Control Unit 3 3 Web Application 9 2 2 Verification Procedure After the user successfully logs in
30. ld be upgraded to wireless sensors to streamline communication to the central control unit A wireless sensor network would increase the flexibility in sensor placement and make the installation of the sensors much easier 12 1 2 Source Nuts and Bolts Hardware 12 1 3 Constraints Wireless sensors require a wireless power source which limits the sensors lifespan Replaceable or rechargeable batteries would be needed to ensure the sensors can maximize their uptime 12 2 Standalone Mobile Application 12 2 1 Description The HICS web application is designed to scale to size for users accessing it via a mobile device A standalone mobile application that is developed separately from the web application would be a more polished alternative to this approach for mobile users 12 2 2 Source Team SmartGrass 12 2 3 Constraints Creating a separate mobile application would take valuable time and resources away from the core development of this project In addition publishing a mobile application would cut into our budget as there is often a fee associated with it 12 3 Upcoming Weather Alerts 12 3 1 Description The HICS utilizes rain sensors to avoid watering during rainy weather However this method is only useful when it is actually raining A weather alert feature could pull reports from local weather APIs and alert the user if a scheduled watering event conflicts with upcoming rainy weather 12 3 2 Source Team SmartGrass 1
31. ne the necessary amount of water needed for the user s lawn The purpose of this product is to make home irrigation systems easier and smarter by providing customers with an automated watering solution that helps with water conservation and provides remote access through an easy to use web application 1 1 Purpose and Use HICS is designed to take advantage of soil moisture sensors to provide a smart watering system for users with an existing sprinkler system All watering activities will be governed by a smart controller which will be able to collect information about current soil moisture levels and allow the user to adjust watering amounts and times based on those readings Our smart controller integrates seamlessly into the users existing sprinkler system to allow users to remotely control and monitor their home s irrigation through a web interface Users will be able to set watering schedules manually or allow HICS to water based on the current soil moisture levels 1 2 Intended Audience The target audience for HICS is primarily home owners that either have or plan on installing a sprinkler system on their property and the irrigation landscaping companies that install those systems for their customers Our product would mainly be marketed towards audiences with water conservation in mind Water conservationists will appreciate the various ways of utilizing soil moisture readings to water their lawn only when necessary and to ensure that o
32. ne venues See Table 11 I for our initial estimated cost break down 11 4 2014 SmartGrass 44 System Requirements Specification HICS Home Irrigation Control System Part Cost Raspberry Pi microcontroller 70 00 Soil moisture sensor 3 20 00 Water valve 3 60 00 Web hosting subscription 6 months 120 00 Rain sensor 15 00 Plumbing materials 25 00 Microcontroller case 20 00 Sprinkler 3 10 00 Waterproof sensor case 3 45 00 Miscellaneous parts wires adapters etc 50 00 Total 435 00 Table 11 1 Individual Part Cost Analysis 11 5 Resource Analysis The resource requirements necessary for HICS have been evaluated to determine the outcome of completion Our team consists of one computer engineer one software engineer and two computer scientists This team balance is conducive to the makeup of the project which is primarily software with a substantial hardware component Every team member has had experience in their particular role not only in school but in industry as well We feel this is a huge benefit to being able to complete our project before the deadline Not only do our members have experience but we each have experience in different fields within our respective majors All of this experience coming together will provide valuable insight into the design and work necessary to make HICS a solid product We have evaluated that our Computer Engineer will focus primarily
33. ors All three of these components will be controlled by the web application Our team has examined the requirements needed for the web application and our outlook is very positive We have two members of the team who have worked for major corporations in industry developing very large scale web applications for clients Their skills in this facet will provide great insight into the development and design of our web application Their experience with the SDLC will also ensure a smooth transition from conception to prototype 11 4 Cost Analysis Our team s estimation of the initial cost of HICS has been determined based on the individual components we have deemed necessary The primary cost will be the hardware components Each individual hardware component must be purchased separately The web application server and hosting can be purchased together as a subscription model The cost for the web application will lie only in the online hosting for the application We determined we will use an online service for hosting to avoid any major costs of purchasing and maintaining a server The cost for hosting is a monthly fee which we have estimated we will need active for remainder of the class approximately six months As far as the components that will make up the web application we have decided to use ASP NET which is a free application system All other components necessary for the application will be free resources obtained through NuGet and other onli
34. ral control unit the amount of water the lawn needs F The rain sensor is used to alert the central F The sensor sends an alert signal to the Rain Sensor Input control unit of rain so that the valves can be central control unit when it detects rain shut off to conserve water The central control unit relays data The unit sends the sensor readings to the Control Unit Input Output between the web application sensors web application and receives control and valves commands for the water valves The application communicates with ne Web Pp The application relays data between the user MENE Input Output central control unit and stores h Application the central control unit and the database information to the database The database holds all information for Information will be stored in the database Database Input Output EE the application and fetched upon request Create Update er The user will be able to create modify an The user account is used to login and Account H account associated with a device monitor control a device The user will be able to communicate The watering schedules are used to Create Update e Schedule Input Output with the central control unit to start stop determine when to water the lawn and for watering how long The user must login with their registered mn The user login is required to provide security Login Input username and password to access the f o a for controlling a HICS device web
35. resentations of the data and will be filterable by zone year month and day 3 5 2 Source Team SmartGrass 3 5 3 Constraints Must have a minimum of one soil reading from the control unit 3 5 4 Standards None 3 5 5 Priority 3 Moderate Priority 11 4 2014 SmartGrass 17 System Requirements Specification HICS Home Irrigation Control System 3 6 User Login 3 7 3 8 3 6 1 Description The user must login to the web application using the correct credentials to be able to remotely control features of HICS 3 6 2 Source Team SmartGrass 3 6 3 Constraints The user must have an active internet connection and access to a supported web browser on their device Additionally a user account and correct credentials must be provided in order to login 3 6 4 Standards None 3 6 5 Priority I Critical Priority Active Status 3 7 1 Description The web application will have a status indicator on the home dashboard to display whether a zone is actively being watered or not see Figure 2 4 3 7 2 Source Team SmartGrass 3 7 3 Constraints None 3 7 4 Standards None 3 7 5 Priority 4 Low Priority Rain Sensor 3 8 1 Description An external rain sensor will monitor the weather conditions and will send an alert to the central control unit in the event of rain The user preferences will dictate whether this event will turn the sprinklers off or not 3 8 2 Source Nuts and Bolts Hardware 3 8 3
36. rol unit must have a valid serial number on it in order for a user to register the device 3 11 4 Standards None 3 11 5 Priority 2 High Priority 11 4 2014 SmartGrass 19 System Requirements Specification HICS Home Irrigation Control System 3 12 3 13 Region Grouping 3 12 1 Description A user may group their sprinkler zones into regions through the web application This functionality will allow the user to setup watering schedules for multiple zones at once without having to configure each individual zone 3 12 2 Source Nuts and Bolts Hardware 3 12 3 Constraints Each zone will have exactly one valve and each region must contain a minimum of one zone 3 12 4 Standards None 3 12 5 Priority 3 Moderate Priority Auto Off 3 13 1 Description The user can set an auto off timer via the web application that terminates watering if the duration lasts longer than the set time 3 13 2 Source Team SmartGrass 3 13 3 Constraints None 3 13 4 Standards None 3 13 5 Priority 3 Moderate Priority 11 4 2014 SmartGrass 20 System Requirements Specification HICS Home Irrigation Control System 4 Packaging Requirements This section will detail the specifics of the packaging requirements for HICS The packaging will relate to the final overall look and feel of the hardware and software as well as how the finalized product is delivered to the user i e the form factor 4 1 4
37. rt uddnupadaaadd rn pene iden 30 8 3 Central Control Unit MOUNTING issus 31 8 4 Rain Sensor Mounting lt lt HS HH sis 31 8 5 Application Security and Privacy sis 31 8 6 User Administration Account 32 9 ACCEPTANCE CRITERIA wicsiccscicsccccctcsescsescncscnctenesanenencerctenenanenencnawctenenenencs 33 9 1 Verity User ACCOUNT suerge nest ERSTEN iras 33 92 Verify Water Control iit 0100620841002 011 on eed lan tenue rade et 34 9 3 Verify Soil Sensor Readings L1 11 2T TH TK HH KH kg 34 9 4 Verify Rain Detection Control sis 35 9 5 Verify Valve Region ConntrOl sir 35 9 6 Verify Watering Schedule sis 36 10 USE CASES EN 37 10 1 Device and User Registration 37 10 2 View Change HICS Settings sisi 37 11 4 2014 SmartGrass System Requirements Specification HICS Home Irrigation Control System 10 3 WSER SIG MIM ze hes state as rennes a cas entendue 38 10 4 Check Status of HICSS eege AA A iaa i ende 38 10 5 Turn On Off Water Valves sisi 38 10 6 Check Watering History ss 39 0 7 Schedule Watering saint ai regnet 39 10 8 Create Change Watering Region 39 10 9 User Account Management 40 11 FEASIBILITY EE E 43 TET SGOBG Anal SIS uo dren terne Le kreatin hedensk dead 43 NR E EE 43 11 3 Technical Analysis 44 RR e ee e 44 11 57 E lee 45 11 67 Schedule Analysis visar Hy l p thoi dt ft ated alerts nan hea 45 12 FUT
38. s and Bolts Hardware 5 5 3 Constraints Control unit must be without power for a specified period of time 5 5 4 Standards None 5 5 5 Priority 3 Moderate Priority 11 4 2014 SmartGrass 25 System Requirements Specification HICS Home Irrigation Control System 6 Safety Requirements This section specifies the various safety requirements associated with HICS The minimization of possible risk and or injury to our customers 1s a top priority Special attention is being applied to this section due to the nature of this project dealing with electricity and water 6 1 Soil Moisture Sensor Insulation 6 1 1 Description The electronic components of the soil moisture sensors must be properly insulated against external environmental conditions This is to ensure that they do not malfunction while in use 6 1 2 Source Team SmartGrass 6 1 3 Constraints None 6 1 4 Standards None 6 1 5 Priority 2 High Priority 6 2 Central Control Unit Temperature 6 2 1 Description Efficient air flow and low temperatures must be established while the central control unit is in operation Computer fans and proper ventilation in the housing container will be used to cool the device and prevent it from overheating and possibly starting a fire 6 2 2 Source Team SmartGrass 6 2 3 Constraints None 6 2 4 Standards None 6 2 5 Priority 2 High Priority 11 4 2014 SmartGrass 26 System Requirements Specification HIC
39. s based on personal preferences or to adhere to local community water restrictions 2 1 5 Local Weather Analysis HICS provides a weather monitoring feature that the user can set to override watering schedules based on reports from an included rain sensor To optimize water usage HICS will not operate when it is raining at the systems location This information will be transferred between the rain sensor and the central control unit to override any scheduled watering that occurs while it is raining 2 1 6 Web Application with Scalable Interface HICS will include a web application that is 11 4 2014 designed to allow users to access their home irrigation system on any device that is connected to the internet and has access to a web browser The web application will be built with scalability in mind to enable the same functionality on a mobile device as it would on a desktop computer This approach will provide a similar look and feel across different interface devices and will enable our software to be used on a wide array of platforms SmartGrass System Requirements Specification HICS Home Irrigation Control System 2 1 7 Registration and Account Management To ensure the integrity of our system each user must create an account and register their HICS device before being able to access the features of the web application Each HICS device will be given a unique serial number that will be used for registration purposes Once the u
40. ser creates an account and registers their device they will be granted full access to interface with their device via the web application 2 2 External Inputs and Outputs 2 2 1 Inputs HICS will require multiple inputs and outputs across each of its components Analog data signals will be transferred from the soil moisture sensors to the central control unit This input provides the information about the soil moisture levels When using the web application users requests information about their home irrigation system Users can also use the application to send information to the central control unit to control the system These inputs are made from end users and will be sent as a digital signal to turn on and off the water valves 2 2 2 Outputs When users request information from the web server the output will be 11 4 2014 defined as the response information about the home irrigation system This information could include current soil moisture readings history of watering and current watering schedules When HICS is remotely operated the output will be defined as the signals sent to the water valves to open and close as dictated by the user SmartGrass 10 System Requirements Specification HICS Home Irrigation Control System Name Data Flow Description Use Soil Moisture eeng The sensors send soil moisture readings The moisture levels are used to determine Sensors H to the cent
41. the user s lawn and sends the information to the central control unit This data is processed by the microcontroller in the control unit and uploaded via the internet to the HICS web server 2 1 2 Web Services One of the features that makes HICS smarter than other home irrigation systems is its ability to analyze soil moisture readings and set watering schedules effectively HICS utilizes a web server to store all soil readings from the microcontroller into a database These readings are then analyzed to determine what water amounts the lawn requires and allows the user to adjust their watering schedules accordingly 2 1 3 Remote Control A main component of HICS is a web application that can be used to monitor and control the irrigation system from a computer or smart phone This application will provide control features to adjust watering schedules read and record data collected by the moisture sensors and turn the sprinkler valves on and off This will allow the user to maintain complete control over their home irrigation system regardless of their physical location 2 1 4 Scheduling Users will be able to create and change watering schedules for the HICS via the web application HICS will provide its own suggested watering schedule that will be created based on soil moisture levels current weather conditions and previous watering history In addition to automated scheduling users will be able to manually set or change schedule
42. they are directed to the home dashboard screen see Figure 2 4 The user will tap click the On Off toggle under the heading Valve Status to toggle the water for that zone on and off 9 3 Verify Soil Sensor Readings 9 3 1 Requirement s addressed Requirement Number Name 3 1 Central Control Unit 3 2 Soil Moisture Sensors 3 3 Web Application 3 5 Soil Moisture Reports 9 3 2 Verification Procedure The soil sensors will provide the user with the details regarding the moisture conditions of their soil Once the user is successfully logged in they will be redirected to the home dashboard screen see Figure 2 4 where they can view the soil moisture levels for each zone in their lawn 11 4 2014 SmartGrass 34 System Requirements Specification HICS Home Irrigation Control System 9 4 Verify Rain Detection Control 9 4 1 Requirement s addressed Requirement Number Name 3 1 Central Control Unit 3 8 Rain Sensor 9 4 2 Verification Procedure If the rain sensor detects rainfall it will signal the central control unit to close all watering valves To verify the user can turn on watering in a zone see Section 9 2 and pour water into the rain sensor to trigger a watering stoppage 95 Verify Valve Region Control 9 5 1 Requirement s addressed Requirement Number Name 3 1 Central Control Unit 3 2 Soil Moisture Sensors 3 3 Web Application 3
43. ts Mounting location must be within range of Ethernet and power outlets 8 3 4 Standards None 8 3 5 Priority 2 High Priority Rain Sensor Mounting 8 4 1 Description The rain sensor must be placed outdoors in a location where there are no obstructions directly above it The best placement for this sensor is on the roof of the user s home in a location where other water sources will not interfere with it 8 4 2 Source Team SmartGrass 8 4 3 Constraints Rain sensor must be mounted in a location free from obstructions and must be properly connected to the central control unit 8 4 4 Standards None 8 4 5 Priority 3 Moderate Priority Application Security and Privacy 8 5 1 Description All user data and account information will be stored on a secure server Users will only be allowed to access their HICS devices and account information if they provide the correct login credentials In addition all user passwords will be encrypted and stored only as hash values 8 5 2 Source Team SmartGrass 8 5 3 Constraints User passwords are required to be six characters in length and contain one upper case and numerical character 8 5 4 Standards OWASP Web Application Security Standards 8 5 5 Priority 3 Moderate Priority 11 4 2014 SmartGrass 31 System Requirements Specification HICS Home Irrigation Control System 8 6 User Administration Account 8 6 1 Description The web application wil
44. vailable via the GitHub repository The software will be split into loosely coupled parts so it would be easier to make changes and improvements to the system over time 7 2 2 Source Team SmartGrass 7 2 3 Constraints None 7 2 4 Standards None 7 2 5 Priority 3 Moderate Priority 11 4 2014 SmartGrass 28 System Requirements Specification HICS Home Irrigation Control System 7 3 7 4 Source Code Documentation 7 3 1 Description All source code files required for HICS will be extensively commented to support future updates and troubleshooting 7 3 2 Source Team SmartGrass 7 3 3 Constraints None 7 3 4 Standards None 7 3 5 Priority 3 Moderate Priority Scalability 7 4 1 Description The central control unit will support adding additional valves or soil sensors 7 4 2 Source SmartGrass 7 4 3 Constraints The central control unit will support up to thirty two valves and thirty two corresponding soil sensors 7 4 4 Standards None 7 4 5 Priority 2 High Priority 11 4 2014 SmartGrass 29 System Requirements Specification HICS Home Irrigation Control System 8 Other Requirements This section details all additional requirements for the project that do not directly fit in previous sections All of the following requirements should be completed for the project to be deemed complete Requirements not listed in this section or in previous sections will not be part of the o
45. ver watering does not occur Another targeted audience for HICS would be individuals who find themselves away from their homes for extended periods of time Once installed the HICS system will communicate through a web application to allow users to view data from their soil moisture sensors set and control the watering of their lawn and control the monitoring features of their system remotely 11 4 2014 SmartGrass System Requirements Specification HICS Home Irrigation Control System 2 Product Description and Functional Overview This section provides the reader with a product description and functional overview of HICS The aspects of our product that are described in detail include its primary operation s core functionality and the key individual features and functions required that make HICS work 2 1 Features and Functions Our product will consist of a central control unit soil moisture sensors and a web application that work and communicate effectively with each other See Figure 2 1 for a high level concept of the components User Interface Central Control Unit Oo Valves Sensors Figure 2 1 High level concept diagram 11 4 2014 SmartGrass System Requirements Specification HICS Home Irrigation Control System 2 1 1 Soil Moisture Readings The most important components that will contribute to the effectiveness of HICS are the soil moisture sensors The sensors monitor soil moisture levels in
46. verall implementation of HICS 8 1 8 2 Mapping the Soil Moisture Sensors to Irrigation Valves 8 1 1 Description HICS requires that the user properly maps the soil moisture sensors to the irrigation valves The central control unit will feature a diagram showing the one to one relationship between soil moisture sensor inputs and irrigation valve inputs 8 1 2 Source Team SmartGrass 8 1 3 Constraints The user must follow the included diagram and instructions to properly map the sensors and valves 8 1 4 Standards None 8 1 5 Priority 1 Critical Priority Browser Support 8 2 1 Description The web application should be scalable and responsive in all of the latest versions of Mozilla Firefox Google Chrome and Internet Explorer 8 2 2 Source Team SmartGrass 8 2 3 Constraints Versions of Internet Explorer older than IE9 0 will not be supported Browsers other than the ones listed above may not necessarily be supported 8 2 4 Standards None 8 2 5 Priority 3 Moderate Priority 11 4 2014 SmartGrass 30 System Requirements Specification HICS Home Irrigation Control System 8 3 8 4 8 5 Central Control Unit Mounting 8 3 1 Description The central control unit must be mounted in a location where it can interface with wires from the water valves and soil moisture sensors It must also be within range of Ethernet and power outlets 8 3 2 Source Team SmartGrass 8 3 3 Constrain
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