Flexible dimming control utilizes either an analog control signal or direct digital pwm control without external rc filtering . this also increases dimming accuracy at low brightness levels 電路采用靈活的調(diào)光控制方式,既可輸入模擬控制信號,也可直接輸入數(shù)字脈沖寬度調(diào)制信號而不需要外置rc濾波器。
In hardware , we choose anti - disturbance photoelectric isolative sensor , take rc filter to resolve high - frequency for anti - disturbance . in software , we adopt arithmetic of recursion mean value to collective signal values to resolve low - frequency ac and pinnacle pulse disturbance 在硬件方面,選用抗干擾能力強的光電隔離電量傳感器,并采取rc濾波抗干擾措施解決中高頻干擾問題;在軟件方面,對采集到的信號量采取遞推平均值算法,解決低頻交流和尖峰脈沖干擾問題。