摘要
在LabVIEW开发环境下,基于虚拟仪器和PXI总线,采用National Instrument(NI)公司的数据采集卡,设计了一个空间相机试验测控系统,实现了硬件设计和软件功能。该系统具有多个通道,可测试温度、应力、应变等多种参数,能实现测控参数设置、数据采集与处理、数据及曲线显示、信号分析与处理、远程通信等多种功能。在某空间相机分系统热平衡试验中,用于测试、控制36个热敏电阻测温点和14个热电偶测温点的温度。结果表明,系统达到了0.5℃的控温要求;热电偶的标定和标准水银温度计的比对结果表明,本系统测温精度可达到0.15℃。与传统的文本语言相比,利用LabVIEW节省了大约80%的时间。本系统具有延续开发能力和可移植性,其设计方法能为其它测控系统的开发提供参考。
On the basis of technologies of virtual instruments and a PXI bus,a measurement and control system including its hardware buildup and software realization in LabVIEW was designed to measure and control multicenter physical parameters in a synchronization method in a space environment test.By using National Instrument（NI） multicenter data acquisition（DAQ） devices,the system has the functions of measuring and controlling parameter setting,data acquisition and processing,data and chart displaying,signal processing and analyzing and remote communication etc.It was successfully used in a thermal balance test of space camera subsystem to measure and control the temperatures of 36 thermistors and 14 thermocouples,and the experimental results show that it can meet the needs of an automatic temperature control accuracy in 0.5 ℃ and measuring accuracy in 0.15 ℃.As compared with traditional text languages,the system design economizes much time and can be applied in other related experiments and developments further.The designing method provides some references for the designs of other measurement and control systems.
出处
《中国光学与应用光学》
2010年第2期133-139,共7页
Chinese Optics and Applied Optics Abstracts
基金
中国科学院"优秀博士学位论文
院长奖学金获得者科研启动专项基金"资助项目
关键词
空间相机
测控系统
LABVIEW
PXI
虚拟仪器
多通道
多参数
space camera
measurement and control system
LabVIEW
PXI
virtual instrument
multichannel
multicenter parameter
