摘要
RS422A、RS485等异步串行通讯技术广泛应用于机载计算机实时控制系统,提高了飞机的可维护性和可扩展性。为使其稳定工作,不仅需要可靠硬件平台,还需严密的软件算法。文中描述了某机载计算机为实现与多个设备进行实时异步串行通讯,设计了统一的硬件平台,并根据每个设备不同的通讯协议,给出了不同的软件算法,重点阐述了软件设计及原理。根据该原理研制的产品已经过试验、联试和用户使用,证明其工作可靠、性能良好。
RS422A and RS485 asynchronous serial communication technologies are widely used real-time con- trol of the onboard computer system to improve the maintainability and scalability of the aircraft. Its stable operation requires both reliable hardware platform and software algorithms. This paper describes an onboard computer to a- chieve asynchronous serial communication with multiple devices in real time, and designs a unified hardware platform and software algorithms based on different communication protocols for each device with emphasis on the software de- sign and principle. Products developed under the principle have been tested, united tested and put into practical u- ses, and prove to be reliable and good in performance.
出处
《电子科技》
2013年第7期116-118,共3页
Electronic Science and Technology
