高精度开关量检测仪的研制

Research and Development of a High Precision Switching Value Detector

研制了一种专门用于测试测控系统事件顺序记录(SOE)分辨率以及开关量输入输出通道性能的开关量检测仪。该仪器采用DSP芯片TMS320LF2407A以及单片机MSP430作为主控制器,利用CPLD实现一些逻辑运算以及GPS卫星失步时的时钟同步;用户可根据不同测试要求设置几个简单的参数后便可得到相应的序列开关量信号输出,或者切换到相关界面监测开关量信号的输入信息。文中给出了系统软硬件设计方案,对其实现方法及其关键技术进行了论述。实验及现场应用结果表明该仪器工作稳定,精度高,具有应用价值。

This article introduces a specialized system that tests the distinguishability of SOE and the performance of switching value with input and output channel.The test-equipment uses DSP chip(TMS320F2407A) and singlechip (MSP430) as a main controller and takes advantage of CPLD to implement some logic operation and synchronous clock when satellite desynchronizing.The test-equipment can output corresponding serial switching signal after setting several simple parameters based on different test requests.It can also detect the switching value for input status when switching to relevant interface.The article reports the system's software and hardware scheme. Meanwhile the article describes the accomplishment method and key technology.The result of the experiment and local application makes clear that the system has the character of running stability,high precision and realistic application value.