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文章介绍了一种机载设备的通讯接口电路的设计与实现,该接口电路是机载设备接线盒的重要组成部分,其设计目标主要是接收前端的综合处理机通过422接口输出的目标方位、目标距离、目标编号、目标有效等命令信息,对其进行格式转换和电气匹配后,再送到发控系统。此外,该通讯接口电路还对接收到的干缆高度数字信号进行数模转换等相关处理,并发送到飞机控制系统和悬停器。
This paper introduces the design and realization of a communication interface circuit of airborne equipment. The interface circuit is an important part of the terminal box of airborne equipment. Its design goal is mainly to receive the target azimuth output by 422 front-end integrated processor, Target distance, target number, the target valid command information, its format conversion and electrical matching, and then sent to the control system. In addition, the communication interface circuit also performs digital-to-analog conversion and other related processing on the received digital signal of the height of the dry cable and sends the digital control signal to the aircraft control system and the hover.