A Novel Intelligent Street Light Control System Using IoT

In the twenty-first century, intelligent street light control system has become the easiest and powerful technique for IoT. Whenever a vehicle or pedestrian passes through the motion detector (PIR sensor), it triggers a signal to the NodeMCU which further triggers the 4-channel relay and sends the binary signal to the mobile application. To optimize the cost and energy efficiency, we are introducing motion sensor between every alternate electric pole. When the motion detector detects any motion of an object, it switches on two street lights at a time, which results in increasing the energy efficiency and reduces the installation charge as well. However, the light will remain turned on if the detector detects the motion of any vehicles or pedestrians. To increase the energy conservation, we use LED lights instead of conventional bulbs. Now to further optimize our solution, instead of using motion detectors after every alternate pole, we have used a single motion detector after every intersection or crossing. Now on highways, the vehicles must keep up to a minimum speed. We set up the street lights according to this minimum speed. Then with this data, along with the range of the detector and the time taken for the vehicle to cross the range of the detector, we estimate the distance between the street lights. Nevertheless, the experimental results showed that the proposed system is energy efficient and cost-effective.