1. Vigilant Sensing Technology VST1000 Remote Sensing System Preliminary Design Review Development Team: Patrick Hauser Joel Keesecker Mark Kien

2. Review Outline Project Objectives Motivation System & Module Descriptions Division of Labor Condensed Schedule Risks & Mitigation Questions

3. Project/System Objectives Seamless turnkey operation Broadband pipeline for expandability Selection of narrowband sensors Clandestine packaging of remote units

4. Motivations Provide generic, economical remote sensing ability for use in public safety and medical environments. Use non-dedicated lines to communicate with the sensors in the field.

5. System Level Diagram

6. System Modules Master Control Unit RF Remote Sensing Unit Power Line Remote Sensing Unit PC Interface

7. System Interfaces

8. Master Control Unit (MCU)

9. MCU Basic Functions LCD: Sensor data, errors, and status Status LEDs: Tx, Rx, Power, Error Liaison between Remote Unit and Host PC Store data when com link is lost (100 Recs) Error monitoring and detection routines

10. MCU Module Interfaces

11. MCU Microcontroller Requirements Single Board Microcontroller Memory to support the following: –Buffering and storage of sensor data (record size TBA). –Operating firmware (code size TBA). Ports: 1-GPSI, 2-RS232, 16-GPIO Speed to support data movement.

12. MCU Power Line Modem Requirements Support serial high speed data – 14Mbps Provide P/S for MCU or use single supply FCC approved for industrial use Small and easy to assimilate into MCU

13. MCU RF Modem Requirements 2.4 GHz FCC Unlicensed Band Operation Support serial high speed data – 250Kbps Single power supply Small and easy to assimilate into MCU

14. MCU Power Supply Requirements Highly efficient design – switching Will supply all modules with specific needs Strive for single supply solution High likelihood for final design group build

15. Remote Sensor Unit (RSU)

16. RSU Basic Functions Monitor sensors, send data when critical threshold is reached Format and communicate sensor data to MCU Respond to commands from MCU Status LEDs: Tx, Rx, Power, Error, Low Battery Report RSSI to monitor link quality Custom PCB Unique ID for each sensor

17. Sensors Original Idea: Radiation Detection Possible Sensors: –Temperature –Wireless Signal Detection Possibly ADL5500 –Motion –Air Quality (eg. Clean Room) Board capable of supporting a variety of sensors

18. RSU Interfaces

19. RSU Microcontroller Requirements Same architecture for both boards (TI / Freescale / Atmel) Low power consumption At least 2 channel 8-bit onboard ADC Onboard UART Real time clock Ports: 1 GPSI/RS-232/RS-485, 8-16 GPIO, ICSP/ISP

20. RSU Power line Sensor GPSI Interface to power line transceiver –Possibly using Asoka PL80-9105-001 If broadband power line communication proves to difficult fall back to narrowband. AC-DC switching power supply

21. RSU Wireless Sensor 2.4 GHz wireless communication –Using Xbee or RS-232 Wireless Modem Battery, Charger, and monitor –9-12 V Lithium-ion Battery –Charger Purchased or own design DC-DC switching power supply Low standby power consumption

22. PC Interface

23. GUI/Host PC Basic Functions Interface through RS232 to the MCU View historic and “real time” sensor data Control data acquisition Store data to database Monitor sensor status (RSSI, Battery life) Error monitoring and detection routines

24. GUI Data Viewer Table of detects Detailed info of selected detect Detailed info on most recent detect Get Detect from wireless device Get Detect from power line device

26. GUI Sensor Information Battery power (wireless device) Sensor unit RSSI Number of sensors on power line unit Number of sensors on wireless unit ID mapping –ID number and corresponding sensor

28. Host PC RS232 Communication Script to read and write to port –On read, update database Communicates with master controller Continuous/Scheduled update Fetch data upon GUI request

29. GUI - If Time Permits Website –Data viewing only –Way to view data from anywhere Historical Info –Plot user defined historical data –Scatter or bar graph depending on data Ex. Temperature over time Ex. Number of Motion detects/day over 1 week

30. Division of Labor Pat HauserJoel KeeseckerMark Kien Primary GUI Development PC Interface Primary Remote Unit Circuit & PCB Design Research Primary H/W Testing Sensor Development Embedded Software Project Manager Power Supply Design Secondary Embedded Software Research Testing Secondary Embedded Software Power Supply Design Testing Secondary Circuit Design (remote) All: Documentation

31. Condensed Schedule

32. Risks & Mitigation Noisy lines could make power line communications difficult –Down grade to narrow band modems or drop Power Line Modem option altogether. Part availability –Address part concerns well in advance of need Resources limited –Reduce scope and/or leverage additional dev. tools.

33. Questions / Suggestions