cRIO远程数据采集装置及其应用

cRIO and its application as negative pressure wave/acoustic pipeline leak detection system

基于低成本可重复配置的控制与采集系统cRIO的技术特点,将其作为负压波/音波管道泄漏监测系统的子站监测设施应用于管道的泄漏检测中。cRIO远程数据采集装置可实现数据采集、数据远传、本地数据存储、时间同步和看门狗等基本功能,介绍了各种功能的实现过程和方法。其硬件组成包括:NIcRIO-9014嵌入式实时控制器、NIcRIO-91048槽可重配置嵌入式机箱及NI9205数据采集模块;软件组成包括:运行于NIcRIO-9104上的采集程序和运行于NIcRIO-9014上的控制程序。cRIO能够进行远程数据采集,在手动阀室等野外环境下正常运行,满足泄漏监测系统对数据实时性、准确性以及子站监测点稳定性的要求,减小供电系统的设计功率,降低阀室改造成本。目前,该装置已成功应用于兰郑长成品油管道11#阀室。

cRIO is a low-cost reconfigurable control and acquisition system.It is reliable and has a wide operating temperature.So,it can be used as sub-station monitor for negative pressure wave/acoustic pipeline leak detection system.cRIO is a remote data collection system that can real time collect,save and transmit data.In this paper,all kinds of function of the cRIO are introduced.Its hardware includes embedded real time controller(NI cRIO-9014),reconfigurable embedded chassis(NI cRIO-9104 8)and NI 9205 data collection module.Its software includes data collection program running on NI cRIO-9104 and control program running on NI cRIO-9014.cRIO can collect data remotely and run in the field,for example,manual valve chamber,and also meet the needs in real time,precision and stability.Furthermore,it can reduce the design power of the power supply system and modification cost of valve chamber.At present,the device has been successfully installed at the NO.11 Valve Chamber in LanZhengChang Refined Oil Products Pipeline.