Circuit Design of Long-Distance Encoding Modulation of Laser

Aiming at the problems of easily disturbed by sunshine and slow response existing in photosensitive sensor detecting circuit, circuit design of long-distance encoding modulation of laser based on infrared remote control chip of SC9148A and TSOP34838 is proposed. By analyzing working principium of laser coding modulation and reception detailedly, long-distance encoding modulation circuit of laser is designed. Experimental result has manifested that detecting circuit has strong adaptability of anti-interference and prompt response, achieving the goal of satisfying the needs.