The project aims in designing an efficient automatic intensity control for head lights of the vehicles when they approach each other to avoid accidents using LDR. Now a day’s technology is running with time, it completely occupied the life style of human beings. It is being used everywhere in our daily life to fulfil our requirements. We can not only increase the speed of life but also increase security with good ideas by making use of advanced technology. In our project we use high power LED’s as head light for the vehicle, LDR sensor for light intensity detection. To detect the presence of another vehicle, and the intensity of the head light we have used LDR sensor, high power LED’s as a source of head 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 for the vehicle is a Microcontroller to which LDR sensor module, High power LED is interfaced to the microcontroller. When two vehicles oppose each other, the intensity of head lights falls on the LDR sensor and automatically the intensity will be reduced. This system avoids accidents due to high intensity head lights of the vehicles. Ultrasonic sensor is used to detect the obstacle and activate the Buzzer for alerts and also stop the vehicle automatically.

Features:                                                                                   

1. LDR sensor-based head light intensity detection and control.
2. Ultrasonic sensor-based obstacle detection and alerting system.

The major building blocks of this project are:-

1. Battery power supply.
2. LDR sensor.
3. High power LED’s with driver.
4. Ultrasonic sensor.
5. PIC Microcontroller.
6. DC motor with L293D motor driver.
7. Buzzer.
8. Reset button
9. Crystal Oscillator
10. LED indicators

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:

   

Block diagram:

        video: