磁隔离技术在GPS信号模拟源设计中的应用-《计算机技术与发展》

文章信息/Info

Title:: Application about Magnetic Isolation Technology on Design of GPS Signal Simulation Source

Author(s):: LI Wen-xin; MU De-jun; LEI Zhi-guang; [1]Northwestern Polytechnical University[2]Lanzhou Institute of Physics

Keywords:: optical isolation; magnetic isolation; optical coupler; magnetic coupler; isolation power; GPS; signal simulation source

摘要:: 随着计算机技术的发展,测试技术和方法也取得较大的进步。在对测试的安全性和可靠性要求越来越高的同时,对测试系统也提出了许多新的要求,如集成度高、便携、小功耗和耐用等。针对某星载设备的测试要求,以及适于高温环境、安全、高可靠需要,研究并比较了几种信号隔离技术的优缺点,最终选用了磁隔离技术,设计并实现了具有信号隔离功能和USB接口的便携式GPS信号模拟源及上位机软件。经过高温环境测试,信号输出稳定,输出波形无失真,已成功应用到航天器的测试中。通过使用,磁耦隔离相比传统的光耦隔离,具有对高温的敏感性低、适用高速率传输、低功耗、小体积、通道间匹配度好且通道配置灵活等诸多优势

Abstract:: Along with the fast development of computer technology,apparent improvements on test skill and method have been obtained.New demands such as high integrated level,good portable feature,low power consumption and durability as well as safety and reliability of test has drawn more and more attention.After detailed comparison among several signal isolation technologies magnetic isolation technology is chosen in order to meet the requirements of hot environment,safety as well as high reliability of certain kind of equipment loaded on satellite,besides,PC software as well as portable GPS signal simulation source with USB port and function of signal isolation are designed and implemented.This technology has already been used in spacecraft test as the output signal is stable and the output wave form is undistorted in high-temperature conditions.Compared with traditional optical isolation,magnetic isolation technology has many more merits such as lower sensibility to hot environment,higher transfer speed,lower power consumption,small size,better inter channel matching rate and more flexible channel configuration