Study of active ultrasonic localization in LED street light controller

Considering problems of the present LED street light controller, we present a method that uses active ultrasonic localization system in LED street light controller to realize energy-saving and intelligent control. Based on binaural effect, we establish a localization model, which can realize real time localization by signals of binaural time difference and binaural level difference. We obtain the model solution for real time localization of moving target. By the rotation of the binaural sensors array, we resolve the problem that the target is unable to locate in binaural signals when it is in the median surface. We design the localization waveform signal of the ultrasonic system, and make simulation experiments. The simulation results show that the model is effective.