Smart street light system: These street lights can automatically switch ON/OFF depending upon the daylight conditions. Each lamp checks its status and if found faulty, sends status to area control system. A central monitoring system collects data of each area and generates report. Each lamp talks to each other as in mesh topology, so that each lamp can act as a bridge between the nth lamp and the area control, thus covering a wider area.At central monitoring system, a Graphic User Interface is used to check the status, lamp details, lineman details, time of fault and report can be generated depending upon area or undertaking lineman.

1. SMART STREET LAMP MONITORING SYSTEM USING WIRELESS XBEE MODULES Under the Guidance of Dr.M.SIndira and Prof.T.Shankar(CSA Dept,IISc) Satyan Raj Prakash 1MV06EE047 Vivek Shankar 1MV06EE058 SourjyaGuha1MV06EE052 ManzoorAlam 1MV06EE027

2. PROBLEM STATEMENT Design and Develop a system to monitor the health of street lamps and forward monitored results to a control station.

3. What is the need for such a system? Street Lamps are the most common source of outdoor lighting in most residential as well as industrial areas. FAULTY STREET LAMPS are very common. People rarely take the initiative to report a faulty street lamp in their locality. Tremendous amount of paper work involved in the procedure to report a faulty lamp and get it repaired . Therefore a smart monitoring system for street lamps is required.

5. Case 2 : A lamp that is on but FLICKERING

6. Case 3 : A lamp that is DIMLY LIT

8. BASIC MODULES MODULE 1: LDR module MODULE 2 : Microcontroller Module MODULE 3: Lamp Status Transmission Module.

9. BLOCK DIAGRAM LDR Module LAMP MODULE CONTROL CENTRE Microcontroller Module Transmission Module

11. MODULE 1 consists of two LDRs.

12. LDR 1 is above street lamp (for checking day/night condition)

13. LDR2 is below the street lamp (To monitor lamp status).

14. Voltages across LDR1 & LDR2 is given as input to MODULE 2.10 K Ω To MODULE 2 LDR GND

15. Uses PIC16F877A microcontroller. Receives voltages from Module 1. µC uses ADC converter to convert the two voltage inputs into digital values. The digital values for voltages is compared against reference values stored in µC to check if lamp is faulty. If lamp is faulty then data transmitted serially to the transmission Module. This data consists of the faulty Lamp Number. MODULE 2 also has an onboard GUI.To set the critical reference values for ADC (i.e critical value for day and lamp glow condition) MODULE 2-MICROCONTROLLER MODULE

16. Microcontroller Fault Detection Algorithm - Working

17. POST FAULT DETECTION FAULT!! CONTROL CENTRE 101001011

18. EXPANSION CONTROL CENTRE

19. THEREFORE A WIRED SYSTEM IS NOT FEASIBLE

20. WIRELESS EXPANSION

21. RF Transmission IR Bluetooth WiMax XBEE Possible Wireless Transmission Methods

22. Why XBEE ?

23. MODULE 3 – XBEE Wireless Module

24. Wireless Module Operation Every Module monitors respective Lamp Health. When a Lamp is faulty the µC is coded to transmit its LAMP ID. Faulty LAMP ID is received at control station

25. What if the Lamp is not in the transmitting range of the control centre?

26. Every module transmits its LAMP ID when faulty. Every other module is ALWAYS in DATA RECEIVING MODE. Faulty lamp numbers are stored in every other neighbouring module’s EEPROM (PIC16F877A has inbuilt EEPROM ). Data Redundancy is checked by µC by checking the EEPROM and accepting only NON REDUNDANT faulty lamp IDs. Now all EEPROM data(which consists of faulty lamp IDs ) is forwarded to control centre. Similar Redundancy check is done at control centre. And a final list of faulty lamps is prepared. Wireless Module Smart Algorithm

27. At the control centre we have a microcontroller module coupled with a XBEE. Lamp numbers received from all lamps. Post redundancy check a final list prepared and stored in the EEPROM of control centre µC . This list is transmitted serially to a computer at the control station. CONTROL CENTRE

28. The data sent to the computer is used by a VB based software. The software gives a Map of the area and shows current status of all lamps in the locality graphically. When a lamp goes faulty a ALARM goes off.And the operator is alerted. Also a log of daily lamp status updates is created. VB based GUI

29. CONTRUCTION DETAILS

32. FINAL MODULE