Industrial touch screen man machine interface having infrared radio communication interface

A man-machine interface of industrial touch screen with wireless infrared communication interface is composed of infrared transceiver for receiving or transmitting optical signal and performing photo-electric conversion, CPU for coding signals, modulating and demodulating and transmitting serial data, and infrared communication controller for program control of infrared communication. Its advantages are high speed, small size, and no electromagnetic interference. 本发明属于工业自动化控制技术领域，是一种带有红外无线通讯接口的工业触摸屏人机界面。本发明主要由中央处理器、红外收发器、红外通讯控制器等构成。红外收发器接收和发射光信号完成光电信号变换，中央处理器完成信号编码、调制解调和串行数据传送，并通过红外通讯控制器编程控制红外线通讯模式，实现工业触摸屏人机界面与上位机之间的组态软件上传、下载、数据传输、信息更新等无线通讯功能。本发明将红外通讯技术应用于人机界面，其高速红外无线通讯传输速度可达4Mbps，远高于RS-232串口通讯传输速度，通讯设备成本、体积远小于以太网通讯，同时解决了电缆连接容易受到电磁干扰的问题。具有连接方式简单、抗电磁干扰能力强、安全可靠等特点。