红外遥控器+红外一体化接收头部分的仿真

红外线编码是数据传输和家用电器遥控常用的一种通讯方法，其实质是一种脉宽调制的串行通讯。家电遥控

中常用的红外线编码电路有μPD6121G型HT622型和7461型等。

这里就以这些电路的编码格式来仿真怎样使用单片机的捕获中断功能来实现其解码。 红外线通讯的发送部

分主要是把待发送的数据转换成一定格式的脉冲，然后驱动红外发光管向外发送数据。接收部分则是完成红外

线的接收、放大、解调，还原成同步发射格式相同(但高、低电位刚好相反的脉冲信号)。这些工作通常由一体

化的接收头来完成，主要输出TTL兼容电平。最后通过解码把脉冲信号转换成数据，从而实现数据的传输。

本单元就是来完成一体化接收头接受到的红外遥控器编码后的输出数据,所以只要单片机完成本单元的解码任

务,并成功实现之后,只要将IR引脚接上红外接收头之后就可以实现红外遥控的功能了。

-Infrared coding is data transmission and household appliances remote control a common communication method, its essence is a pulse width modulation of serial communication. Home appliance remote control



The commonly used infrared coding circuit have μ PD6121G type HT622 type and 7461 type, etc.



Here to the circuit code format to simulate how to use a single chip microcomputer capture interrupt function to realize its decoding. Infrared communication sends department



The main points to send data is converted into certain format pulse, and then drive infrared light tube sent out the data. Receiving part is complete infrared



Line of receiving, amplification, demodulation, reductive into synchronous launch the same format (but high and low potential is just the opposite of the pulse signal). These work usually consists of an organic whole



The head of receiving to complete, the main output TTL compatible level. Finally through the decoding the pulse signal conversion to