目录一、摘要................................................. 1二、关键词............................................... 2 三、系统方案的设计与比较................................. 41. 方案一:单片机处理法............................... 42. 方案二:电压放大法................................. 53. 方案三:调制解调法................................. 6四、单元模块的设计....................................... 61. 声-电转换模块...................................... 62. 红外发射模块....................................... 73. 红外接收模块....................................... 84.电-声转换模块...................................... 9五、系统测试与结果....................................... 10六 、 设 计 总 结 ............................................. 11七 、 参 考 文 献 ............................................. 11红外光通信装置设计报告一、摘要本装置估计采纳红外光通信系统,该系统由声-电转换模块、红外光发送模块、红外光接收模块和电-声转换模块四部分构成。实现对声音信号的产生、发送、接收以及实现对声音的滤波消除干扰和功率放大。为了增大接收距离,增加发射能量,我们增加了一级简单的功率放大器,同时推动 7 支红外发射管(见后文图)发射语音信号,为了滤除干扰光接收部分采纳了廉价简易的滤光片,实验采纳音频插孔线路输入语音信号,耳机输出语音信号,用示波器测试输出发射与接收波形(见后文图)。为了完成以上几个基本要求设计了三套方案,经过对方案的论证与比较后,选出了一套简易可行,成本较低的方案。AbstractThis device uses infrared light communication system, which by the sound - electric conversion module, the infrared light transmitting module, an infrared light receiving module and the electric - acoustic conversion module of four parts. To achieve the sound signal generation, transmission, reception and filtering to achieve the sound eliminate interference and power amplification. Using audio jack line input speech signal, headphone output speech signal, using protel software designed...