An energy-efficient WSN-based traffic safety system

This paper describes the design of an energy-efficient wireless sensing network (WSN) system for highways lighting that we called vehicle detection for light providing system (VDLPS). This proposed study develops a system that would enable the efficient use of solar light poles. The VDLPS consists of solar light poles deployed in dangerous portions of highways. These poles would be assembled in groups and each group will be equipped with a sensor and an actuator. The sensor would serve for vehicle detection while the actuator would be responsible of switching on and off the light-emitting diodes (LEDs) of a group of poles. A control unit is used to process sensors signal into instructions for the actuators. Communication between the system components is done through Zigbee network and relayed by the use of repeaters. The architecture of the suggested system is introduced, its components, workflow and operating logic are detailed, and a cost study is conducted. The motivation behind this approach is to reduce accidents by lighting dangerous portions of highways that can be deadly with a reduced cost and along with an optimal and efficient use of solar energy.