The invention discloses a charging pile noise reduction system, and the system comprises a sound barrier which is disposed between a charging pile and a vehicle charging region; the active noise reduction device at least comprises a controller and a loudspeaker connected with the controller, the loudspeaker is arranged around a vehicle charging area, the controller is used for generating a noise reduction signal according to a noise reference signal and a residual noise signal, the noise reference signal is used for reflecting primary noise characteristics generated by the charging pile, and the residual noise signal is used for reflecting residual noise characteristics generated by the charging pile; the residual noise signal is used for reflecting the residual noise characteristic of the vehicle charging area after noise reduction; and according to the noise reduction signal, a loudspeaker is controlled to emit reverse sound waves so as to counteract noise generated by the charging pile. According to the system, active noise reduction and passive noise reduction are combined, the sound barrier can filter high-frequency noise, the active noise reduction can effectively reduce low-frequency noise, and therefore the noise reduction effect of the vehicle charging area is improved.
一种充电桩降噪系统,该系统包括:声屏障,设置在充电桩与车辆充电区域之间;主动降噪装置,主动降噪装置至少包括控制器和连接控制器的扬声器,扬声器设置在车辆充电区域周围,控制器用于:根据噪声参考信号和残余噪声信号生成降噪信号,噪声参考信号用于反映所述充电桩产生的初级噪声特性,残余噪声信号用于反映所述车辆充电区域在降噪后的残余噪声特性;根据降噪信号控制扬声器发出反相声波,以抵消充电桩产生的噪声。该系统将主动降噪和被动降噪相结合,声屏障能够过滤高频噪声,主动降噪能够有效降低低频噪声,从而提高了车辆充电区域的降噪效果。
Noise reduction system of charging pile
充电桩降噪系统
2024-06-21
Patent
Electronic Resource
Chinese