The latest trend in the technologies related to wireless communication has led to the emergence of several engineering designs for human requirements. The creeping interests in the wireless and GSM based projects, we came up with this idea of developing a simpler, multipurpose, cost-effective design to control the on-off street lights via short message service (SMS). Commands are sent to street light for night lighting Applications system through user’ mobile as data through SMS (Short Service Messages) providing a cost effective, reliable far-reaching access to the user. In our project we use high power LEDs as representative of street light. LDR is a special type of resistance whose value depends on the brightness of the light, which is falling on it. It has resistance of about 1 mega ohm when in total darkness, but a resistance of only about 5k ohms when brightness illuminated. It responds to a large part of light spectrum. The controlling device of the whole system is a Microcontroller. LDR, MOSFET along with street lights are interfaced to the PIC Microcontroller. Here we are using LDR to check the working of street light. By sending a simple SMS user will turn ON/OF street light using mobile phone. If the street light was not working then the microcontroller sends the alert message through GSM to the respective person. In this, street lights are interfaced to the microcontroller through MOSFET to ON/OFF the street lights based on the received SMS.        

The main objectives of the project are:

• Using PIC Microcontroller to achieve the task.
• To detect the fault using LDR sensor.
• Visible alerts using LCD display.
• GSM based street light control system and fault alerting system.

      Components used:    

1. PIC Micro controller (16F72)
2. Reset button.
3. Crystal oscillator.
4. Regulated power supply (RPS)
5. LED Indicator.
6. GSM.
7. LCD display.
8. Street lights.
9. LDR.

      Software’s Used:  

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3. Express SCH for Circuit design.

      Regulated Power Supply:

           

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