基于PAM调制技术的红外光通信电路设计  

Design of Infrared Optical Communication Circuit Based on PAM Modulation Technology

作　　者：马燕妮 马平原 张广法 麻志峰 徐扬 MA Yan -ni;MA Pin-yuan;ZHANG Guang-fa;MA Zhi-feng;XU Yang(92840 Troops,Qingdao 266300,China)

机构地区：[1]92840部队

出　　处：《仪表技术》2019年第9期40-42,共3页Instrumentation Technology

摘　　要：基于PAM脉冲幅度调制与解调技术,实现语音信号和温度信号利用38 kHz载波完成红外光通信。语音信号在系统中经过PAM调制后加载在红外发射管上发射,能在2 m或更远的距离外接收到,并经过放大、滤波和功放后,还原出清晰、低噪的语音信号。该系统功能完善,具有一定的应用价值。The system can realize the high quality infrared optical communication with the vocal signal and the temperature signal in the 38 kHz carrier frequency based on the technology of Pulse Amplitude Modulation and Demodulation.After the PAM,the vocal signal can be transmitted by the infrared LED,and can be received in the distance of 2 meter or longer.Finally,the vocal signal can be restored clearly and low-noised through the operational amplifier,filter and power amplifier.The system has perfect function and has certain application value.

关 键 词：PAM 语音传输 红外通信 

分 类 号：TN714[电子电信—电路与系统]