基于MSP430的红外光通信装置的研究  

Research on infrared communication device based on MSP430 MCU

作　　者：赵豪兵 刘庆想[1] 张政权[1] 

机构地区：[1]西南交通大学物理科学与技术学院,成都611756

出　　处：《信息技术》2015年第11期45-48,共4页Information Technology

基　　金：中央高校基本科研业务费专项资金项目(SWJTU11CX-077;SWJTU12CX086;SWJTU12ZT10)

摘　　要：MSP430系列单片机目前已广泛应用于许多数字电子控制领域。红外光通信装置将语音信号与室温的温度信号经过MSP430采样、A/D转换、编码从而实现将模拟信号转换为数字信号,再将两种数字信号调制在红外光上发射,在收发部分均辅助以光学透镜以汇聚红外光,减少信号能量的损失。接收模块对信号进行放大、滤波、整形等处理,并将得到的数字信号在控制器MSP430中进行解码与D/A转换,发送至相关模块输出,进而实现利用红外光为传输载体完成红外无线通信。该系统可以较为准确地还原原始语音信号,单片机以5.3k Hz的采样频率对语音信号进行采样,可听到喇叭播放的混有少量噪声的原始语音,同时液晶显示屏显示的室温每秒更新一次。MSP430 series singlechip microcomputer is widely used in many digital electronic control field. After MSP430 sampling, A/D conversion, encoding, the infrared device can make the sound signal and the temperature signal by the analog signal into digital signal, later, the two kinds of digital signal modulation on the infrared emission are launched, optical lens is used to converge infrared in the launching and receiving parts. It can reduce the loss of signal energy. The signal is magnified, filtering, reshaping by the receiving part and the digital signal in the controller MSP430 for decoding and D/A conversion is sent to the relevant module output. It completes infrared wireless communication transmission carrier by using infrared light. The system can restore the original speech signal more accurately. Sampling frequency is 5.3 kHz for the speech signal sampling by the microcontroller. It can be heard that the horn plays mixing with a small amount of noise in the original speech. At the same time, LCD screen display room temperature is updated once per second.

关 键 词：MSP430单片机 红外通信 液晶显示 光学透镜 

分 类 号：TN929.1[电子电信—通信与信息系统]