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本文针对 MCS—51系列单片微处理器应用于过程控制、实现实时多机联网通信的场合,分析了如何兼顾实时通信的传输可靠性问题。为了提高通信的实时性,不利用采用 MCS—51系列单片微处理器 SIO 本身所具备的常规奇偶校验法,为此我们提出了一种适用于多机联网通信的、兼顾通信实时性与可靠性的校验法——分组奇偶校验法,使系统通过较为简单的算法,既具备此常规奇偶校验法更好的检错能力,又兼顾通信的实时性。
In this paper, MCS-51 series of single-chip microprocessor for process control, real-time multi-machine networking communications occasions, analyzed how to take into account the transmission reliability of real-time communications. In order to improve the real-time communication, do not use the MCS-51 series of single-chip microprocessor SIO itself has the conventional parity-check method, for which we propose a suitable for multi-machine network communications, both real-time communication and Reliability of the test - packet parity method, the system through a relatively simple algorithm, both with this conventional parity check better error detection capabilities, but also take into account the real-time communication.