General Application and Description of the ProjectThis system can be used in highways and in rural areas where intensity of traffic at nights is very low. But the street lights are switched on with full intensity even if there is no traffic on the road. This leads to wastage of power. From the data we found that energy is used at faster rate than its replenishment. So there is an urgent need to conserve energy as much as possible. The proposed system uses IR sensor to detect the presence of vehicle. When there will be no vehicle on the road, the street lights will glow with 50% intensity, but when IR sensor will detect the presence of vehicle or any other object it will glow with 100% intensity. 

TDA0161 are monolithic integrated circuits that can detect the variations in high frequency Eddy current losses. They can be designed for detection of metallic body. They can act as oscillators with the help of external tuned circuit. The output signal level is altered when any metallic object is approaching towards the coil of the circuit. Basically, the output signal varies due to change in the supply current. The supply current does not depend upon the supply voltage. It becomes high when any metallic body is approaching else remains low. The normal high output is 10mA whereas normal low output is 1mA.