用于单轴旋转惯导系统的非接触信号传输技术

Non-contacted Signal Transmission Technology Used in Uniaxial Rotating INS

关键词:  旋转惯导  非接触  导电滑环  激光通信

Key words:  Rotating INS  Non-contact  Electricconduction link  Laser communication

摘要:

针对旋转惯导系统内使用的导电滑环具有寿命低、可靠性差、传输信号带宽窄的缺点，设计了一种基于激光通信的非接触信号传输装置，用于代替导电滑环传输电信号，可大大提高使用寿命、传输信号精度、可靠性和带宽。文中详细介绍了装置的设计原理、技术实现及验证，该装置具有RS232、RS422、CAN、TTL等多种输入输出接口，可满足大部分惯导系统信号传输要求，有效传输距离为20～80mm，经过各个环节的精密设计，可保证10-7量级的传输精度，通过各种测试充分验证了该装置代替导电滑环传输电信号的可行性，为提高旋转惯导的可靠性奠定基础。

Abstract:

A kind of non-contacted signal transmission device based on laser communication is designed to transmit electrical signals in rotating INS instead of electric conduction link,which has some disadvantages including short life span,poor reliabilibty and narrow transmission signal bandwidth.This device can greatly improve life span, transmission accuracy, reliability and bandwidth.It〖DK1〗’s described in this paper that the design principle,technical realization and verification method of this device.Since it has multiple input & output interfaces,such as RS232,RS422,CAN and TTL,it can meet most of the requirements of INS signal transmission.A 10-7 order of magnitude transmission accuracy can be ensured through sophisticated design of each link,with the effective transmission distance of 20～80mm.The feasibility of repalcing electric conduction link with this device is fully validated through a variety of tests. And this design has laid the foundation for the reliability of INS.