Wireless Leak Detector and Inhibitor System. Group 6: Petar Arnaut Olivier Thomas J Chris Fontaine Barry Zou

Transcription

1 Wireless Leak Detector and Inhibitor System Group 6: Petar Arnaut Olivier Thomas J Chris Fontaine Barry Zou December 2, 2013

2 Presentation Outline 1. Mo&va&on and Background 2. System Overview 3. Project Management 4. System Design 5. System Implementa&on and Tes&ng 6. Future Work and Business Considera&ons 7. Individual Contribu&ons 8. Closing 9. Ques&ons 2

3 Team Roles Petar Arnaut: CEO, Hardware Engineer Olivier Thomas: COO, Firmware Engineer Chris Fontaine: CTO, Hardware Engineer Barry Zou: CFO, SoUware Engineer 3

4 Motivation and Background 4

5 Motivation and Background Canadians on average pay $840 annually for home insurance. [1] Approximately 40% of all home insurance claims are from water related damages. [2] Average cost of water related damage rose from $7192 in 2002 to more than $15500 in [2] 5

6 Motivation and Background How do we develop a system that is able to alleviate this issue and offer users a peace of mind? 6

7 System Overview Based on that informa&on, we want A system that is able to detect a leak effec&vely with limited false posi&ves A system that is able to prevent addi&onal water damage by stopping the water source A system that is able to warn the user of a leak remotely 3 modules Detector Inhibitor User management 7

8 System Overview 8

9 System Overview 9

10 Development Schedule 10

11 Development Cost Equipment List Es7mated Cost Actual Cost Arduino Microcontrollers $100 $94.56 Transceiver Modules $80 $75.85 Moisture Sensors $40 $0 Electronic Valve $50 $24 Enclosure for Inhibitor/User management $50 $16.26 Rubber Mat $30 $30 Water proofing material (Seals, Covers, etc) $20 $24.06 Miscellaneous Electronic Parts, Construc&on Equipment (Wires, Switches, Resistors, Screws, Wood, etc) $80 $ Internally Driven Buzzer $ - $11.04 RP- SMA Antenna $ - $31.12 Miscellaneous Tax/Shipping Costs $ - $91.93 Con&ngency $70 Total Cost $520 $

12 Prototype Unit Cost Detector Rubber Mat, Cover, Arduino, Transceiver, Electronic parts, Misc Inhibitor Electronic Valve, Arduino MCU, Transceiver, RP- SMA Antenna, Enclosure, Cable Gland Module Cost $ Module Cost $90.00 User management nrf24lu1+ Transceiver, RP- SMA Antenna, Enclosure Module Total Cost $60.25 Total Cost $

13 Market Demand Not all water related damages will be covered by insurance Hassle and nuisance to deal with claims and repairs Provides benefit of peace of mind while users are away from the property Suitable for both home and business owners 13

14 Competitive Advantage Alterna7ve Similar Systems On The Market Have basic func&onality Cannot have remote alerts High Cost The Signatus Wireless Leak Detec7on System Customizable through souware Remote alerts Cost- Efficient Scalability Ease of installa&on Sensors are appealing and easy to move 14

15 Detector Hardware Design 15

16 Detector Hardware Design 16

17 Detector H/W Iterative Design 1. NMOS switch circuit 2. Simple comparator circuit 3. Wheatstone bridge with instrumenta&on amplifier Final Design Choice 4. Wheatstone bridge with a comparator 17

18 Inhibitor Hardware Design 18

19 Inhibitor H/W Iterative Design 1. Original design for a normally open valve - Simple NMOS switch 2. New design for either valve type with souware control Final Design Choice 4. PMOS to switch power for valve with NMOS to act as souware switch 19

20 MCU + Transceiver Selection MCU Size H/W Interrupt SPI I/O and Analog Pins Transceiver 2.4 GHz Includes low level packet wrapper Range 20

21 Embedded Design Leak Detec&on Valve Control Banery Monitor RF Communica&on 21

22 RF Communication Unique ID Reserved Type ID Conn Status Leak Data BaQery 8 Bits 4 Bits 2 Bits 2 Bits 1 Bit 7 Bits

23 Application Software Design AUer receiving the data is then passed into the USB ram on the MCU The GUI applica&on requests data asynchronously, when the MCU has data in the USB RAM it clears the request and passes the data. AUer receiving the data the GUI applica&on sends a new request 23

24 GUI Application Implemented using Qt Creator and Qt Framework Designed for simple and intui&ve, along with ease of use, reliability 24

25 GUI Iterative Design 25

26 Battery Status and Leak Detection 26

27 and SMS Alerts 27

28 System Implementation Divided tasks according to exper&se Subdivided each device into the smallest subcomponents possible Unit tests auer each subcomponent complete Integra&on Tes&ng of integrated device Repeat 28

29 Unit Testing Water Detector Valve Inhibitor / Pump Transceivers / Receivers GUI Interface Integra&on 29

30 Product Capabilities Detectors can be placed within 90 feet of inhibitor Banery life on detector es&mated at minimum one week Able to detect any conduc&ng type of liquid Can withstand a person walking across the detector SoUware is capable of sending no&fica&ons Detector and inhibitor will automa&cally connect with each other, when in range 30

31 Design and Scope Changes No banery status for Inhibitor No souware control over the Inhibitor 31

32 Future Improvements - Detector 95th Percen&le male can step on Detector without harm Baneries able to last for 6 months before replacement Manufacture the electronic circuit + MCU + Transceiver into a PCB design Different type of rubber mat material 32

33 Future Improvements - Inhibitor Supplied by AC power through property electrical panel Offer a variety of sizes for the electronic valve Use a valve that is normally open, power to close Improve the strength of the receiver 33

34 User management MCU + Transceiver built into 1 ASIC Proper GUI elements and support Addi&onal GUI features such as Proper Text messaging using a paid service Manual Inhibitor controls Buzzer disable op&on Future Improvements User Management 34

35 Contributions Petar Arnaut Arranged mee&ngs between team members, divided tasks among members Documenta&on of all mee&ng minutes and submissions Design and implemented detector buzzer, sensor, banery status circuit ENSC 220, 225, 325,

36 Contributions Olivier Thomas Ini&al system design Func&onal specifica&on, Design specifica&on for embedded souware Researched parts for overall system Designed and implemented embedded souware for Detector, Inhibitor and RF communica&on ENSC 215, 350,

37 Contributions Chris Fontaine Specifica&ons for inhibitor, editor for final review of documenta&on. Designed the wheatstone bridge for use in the water sensor circuit Designed and implemented inhibitor electronic valve control circuit Unit tes&ng of hardware devices and fabrica&on of final product ENSC 325,

38 Contributions Barry Zou Documenta&on for draus Project Proposal, Progress Report, Presenta&on Func&onal specifica&on and Design specifica&on for GUI applica&on Tracked financials and purchases of main electronic parts Designed and implemented the GUI applica&on CMPT

39 Conclusion Built a prototype Wireless Leak Detector and Inhibitor System which includes A water sensing electronic circuit that is able to transfer leak informa&on wirelessly An inhibitor module that is able to take appropriate ac&ons with transmined data and shut off water source A user management module that is able to display accurate status informa&on through a GUI, as well as remotely warn users of leaks 39

40 Conclusion During the system development process we gained experience and learned about Project planning and management Time management and priori&zing Team communica&on Hardware and SoUware skills 40

41 Acknowledgements Lakshman One Mike Sjoerdsma Lukas Karim Merhi Mona Rhabar Ali Rhabar Jamal Bahari Fred Heep Engineering Student Society Endowment Fund 41

42 Thank You Any Ques&ons? 42

43 References [1]Your Eye in a Complex World of Insurance [Online]. Available: hnps://insureye.com/news_and_insights/view/canadians- pay average- annually- for- home- insurance [2](2013, Apr 10). 40% of all home insurance claims are due to water damage, insurer says [Online]. Available: hnp:// of- all- home- insurance- claims- are- due- to- water- damage- insurer- says/ /10 [3] Carson Morrow [Online]. Available: hnp://carsonmorrow.com/ (Some Transceiver communica&on code examples were used) [4] nrf24lu1+ DataSheet [Online]. Available: hnps:// [5] nrf24l01+ Datasheet [Online]: Available: hnp:// [6] Arduino Pro 328 mini Datasheet [Online]: Available: hnp:// [7] Arduino Pro 328 Informa&on [Online]: Available: hnp://arduino.cc/en/main/arduinoboardpro [8]hnp://krazatchu.ca/2012/01/28/adc- banery- voltage- divide- match- and- measure/ [9]hnp://corrosion- doctors.org/corrosion- Kine&cs/Ohmic- drop- water.htm [10]hnp:// content/uploads/2012/07/944bent_lrg.jpg (antenna) [11]hnp:// (LM 324 datasheet) [12] water leak source hnp://mommasplaceathome.blogspot.ca/2010/05/water- leak- led- to- remodeling- our.html [13] sms image source hnp:// content/uploads/2012/10/text- message- marke&ng- green.jpg [14] image source hnp://ouacademictech.com/wp- content/uploads/2013/11/ - icon.jpg 43