基于PFM调制的超低功耗红外光通信装置设计

On a Design of Ultra-Low Power Infrared Communication Device and Repeater

采用分离元件,以STM32F103ZE微处理器作为控制核心,设计了一种红外光通信装置以及超低功耗三维中继器,实现数字或模拟信号的无线传输以及任意方向转发.该装置主要由红外光发射器、三维中继转发器和红外光接收器等模块组成,使用同步传输协议,以脉冲调频的方式调制解调,实现了数字化无线通信的目的,解决了光通信仅能单一方向传递的问题,具有功耗低,传输距离较远的优点.并以音频传输为原型,在13m左右的三维空间里实时传输0.1~10kHz频带内的音频信号.

By means of the separation of components ,and taking the STM32F103ZE microprocessor as the control core ,an infrared optical communication device and three-dimensional ultra-low power repeaters have been designed ,contributing to the wireless transmission and the transponding in any directions while transmitting the digital or analog signals .The entire device consists of an infrared light emitter ,a three-di-mensional repeater and a infrared optical receiver and so on .It can achieve the purpose of digital wireless communications ,and make up for the single directional transmission defects of the optical communication by means of a synchronous transmission protocol and the demodulation of PFM modulation .It has the ad-vantages of the low power consumption and the long-distance transmission .With the audio transmission as the prototype ,transmit audio signal within 0.1-10 kHz band in three-dimensional space of about 12 me-ters in real time .