自动气象站故障诊断、测试、维修系统设计与实现

面对气象防灾减灾业务服务需要,自动气象站的技术维修、保障效率问题日趋突出,主要表现为:1在自动站维修维护中存在故障检测仪器的不统一,难以适应业务维护标准化的要求;2检测方法单一,难以适应设备多样化的设备检测要求;3故障检测的自动化程度低,难以满足高时效、快速维修保障的需求。针对维护保障工作存在的问题,使用美国NI公司PXI的虚拟仪器技术,并采用NI公司的图形化软件编程平台LabVIEW设计了一个基于虚拟仪器的自动气象站故障诊断、测试、维修系统,主要包括测试系统的硬件设计、应用软件设计和动态维修数据库设计3部分。实现了待检自动气象站的数据采集、处理、分析、诊断、显示及归档打印等功能。利用软件编程对测试信号进行了调理处理,增加了自适应测试功能。采用数据库检索功能,实现了故障的相似查找功能,提高了故障的测试与诊断效率,系统解决自动气象站维护维修保障的标准化、自动化问题。

A Diagnosis, Testing and Maintenance System of Automatic Weather Station Faults

Aiming at the problems existing in the maintenance of observation equipment, by use of the NI PXI virtual instrument technology, and the LabVIEW graphical programming software platform, an automatic meteorological station fault diagnosis, testing, and maintenance system is designed based on the virtual instrument technology, mainly including the hardware design of the testing system, application software design, and dynamic maintenance database design, which realizes the functions of automatic meteorological station data acquisition, processing, analysis, diagnosis, file display, printing, etc. Through the test signal treatment by software programming to strengthen the function of adaptive test, using database retrieval function, the system realizes the fault similarity search function and improves the efficiency of fault testing and diagnosis.