The main aim of this project is to develop a speed-breaker-based power generation and automatic street-light control system using a rotor and rack-and-pinion mechanism. When a vehicle passes over the speed breaker, the downward movement of the speed-breaker plate is transferred to the rotor and rack-and-pinion mechanism. This mechanism converts the linear motion into rotary motion, which drives a dynamo to generate electrical energy. The generated electricity is supplied to a charging circuit and stored in a rechargeable battery for later use. The stored electrical energy is used to operate the street lights. An LDR (Light Dependent Resistor) senses the surrounding light intensity and provides an output to a comparator. The comparator continuously compares the LDR output with a preset reference level to identify day and night conditions. Based on the comparator output, a relay automatically switches the street lights ON during night-time and OFF during daytime. The proposed system therefore combines energy generation from vehicle movement with automatic street-light control, providing a simple and efficient method for utilizing the mechanical energy produced by vehicles passing over speed breakers.      

 

Features:

• Generates electricity from vehicle movement over a speed breaker.
• Uses a roller and rack-and-pinion mechanism to convert linear motion into rotary motion.
• Uses a dynamo to generate electrical energy.
• Stores the generated energy in a rechargeable battery.
• Includes a charging circuit for battery charging.
• Uses an LDR sensor to detect day and night conditions.
• Uses a comparator to process the LDR output.
• Uses a relay for automatic ON/OFF control of street lights.
• Automatically turns street lights ON at night.
• Automatically turns street lights OFF during daytime.
• Reduces wastage of mechanical energy from moving vehicles.
• Provides a simple and low-cost renewable energy generation system.

           

The main blocks of this project are:

1. Rack-and-pinion mechanism.
2. Roller mechanism.
3. Metal frame with.
4. Speed breaker setup.
5. Dynmo.
6. Charging circuit.
7. Battery.
8. Comparator.
9. LDR.
10. Relay.
11. Street Light.

         

Block Diagram:

         

video: