对遥控器进行解码分析的一种测试系统

A Measurement System of Code Analyzing for Remote Control Unit

遥控器的每个按键是按照预定编码规范对特定红外载波信号进行调制发射的。主控制器遥控接收电路接收到红外调制信号后由解码子程序进行解码并做出相应处理。本测试系统可以起到两个作用 : 通过高速数据采集模块对接收到的遥控信号按照编码规范进行破译 ,根据比较结果 ,在面板上对解码内容做出相应指示、报错 ,直观的分析出遥控器按键发码内容是否符合编码规范。 在不知道遥控器编码规范的情况下 ,通过示波器测出高、低电平脉宽后 ,可以编程分析出每个遥控器按键的发码内容 (0、1码序列 ) ,指导相关人员编写遥控器的发射子程序和控制器的接收子程序。

The code rule of every keyboard is not suitable for the remote-control unit. Every keyboard code is modulated and transmitted upon the infrared carrier wave according to schedule rule of codings.Main controller gets response through corresponding program while receiving the modulated infrared signal.This measurement system describes a technique of decoding modulated remote signal according to schedule rule of codings by using high-speed DAQ-card,and indicated whether the decode content is correct at prescriptive interface.