摘要
介绍一种抗干扰能力强的单片机无线数据传输接口的工作原理与软件设计。主控芯片采用AT89C51单片机,通信方式采用抗干扰能力强、可靠性高的DTMF信号和单工调频的无线通信方式。十六个DTMF信号码作为信息帧的十六种位码,以及采用校验码进行检错和纠错,使数据传输误码率几乎降到为零,极大地提高了无线数据传输质量。软件采用C51模块化设计,可方便地进行移植以实现各种数据的区域无线传输。本接口可应用于实验室大型仪器设备的无线通信自动登记和管理系统,也可应用于无线通信自动抄表系统等。
The principle and software design of a radio data transmission interface for one-chip microprocessor is introduced, with strong anti-interference. The master control chip uses AT89C51, the communication mode adopts DTMF signal with strong anti-interference and high reliability, and simplex frequency modulation. And sixteen DTMF signal codes are used as sixteen field bit codes of information frame. The mistakes are checked on and corrected by the checking code. Miscode rate of data transmission drops nearly to zero, increasing the quality of radio data transmission greatly. The software uses a modular programming of C language. It can be convenient to move to realize the area radio transmission of data. This interface can apply to automatic register and management system of radio communication of large-scale instruments in the laboratory, and to those radio communication systems of automatic tablelookup.
出处
《微机发展》
2003年第8期80-82,F003,共4页
Microcomputer Development
