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详细论述了所开发的串行通信链路的开发过程及设计方案。从光通信链路入手,在研究了相关串行通信接口协议的基础上,通过相关的发射和接收接口电路设计,开发了相应的光电转换接口模块,并对其进行了相关的基带传输性能测试和数据通信测试。测试结果表明,所开发的光通信设备可稳定工作在460.8 kb/s。该光电转换接口设备是为了配合用于小型无人直升机的光传数字舵机的验证而开发,它以光信号的形式传输飞控计算机至舵机的控制指令,并返回舵机位置传感器信号。飞控计算机端电气接口采用RS-232标准,舵机控制器端采用RS-485接口标准,通信波特率为9600 b/s。通过其在直升机贴地飞行光传操纵半物理仿真平台上的验证表明,所开发的光电接口设备兼容两种串行接口,能够满足验证工作的需要。
The development process and design scheme of serial communication link are discussed in detail. Starting from the optical communication link, based on the research of the related serial communication interface protocol, the corresponding photoelectric conversion interface module has been developed through the related transmitting and receiving interface circuit design, and the related baseband transmission performance testing And data communication test. The test results show that the developed optical communication equipment can work stably at 460.8 kb / s. The photoelectric conversion interface device was developed to validate the light-transmitting digital servos for small unmanned helicopters. It transmits control commands from the flight control computer to the servos in the form of optical signals and returns the signals of the servos position sensors. The computer interface of flight control computer adopts RS-232 standard, RS-485 interface standard of servo controller, the communication baud rate is 9600 b / s. The verification on the semi-physical simulation platform of flight-controlled light-transmitting control of helicopters shows that the developed optical interface device is compatible with two kinds of serial interfaces and can meet the needs of verification work.