关键词: 无线传感器网络, 状态监测, 故障诊断, 微控制器, 信号处理, 数据采集

Abstract: To solve the problems such as low integration rate, adaptability and use ratio of data in the existing condition monitoring systems, an intelligent condition monitoring system of machine equipment based on Wireless Sensor Network (WSN) was studied and established. The core of this system was design of intelligent sensor networks nodes based on MSP430 microcontroller. By utilizing the signal analysis ability of Micro Control Unit (MCU), localized processing and date fusion for status data were carried out so as to realize distributed condition monitoring equipped with data gathering and signal processing in a sensor networks node, as well as status maintenance sensor network with elementary self analysis ability. A prototype of intelligent condition monitoring for large-scale machine equipment was developed and implemented in a petrochemical plant. Application result indicated that the system could improve the efficiency of data gathering and processing, and reduce the communication amount between the point of data collection and the failure-diagnosis center.

Key words: wireless sensor networks, condition monitoring, fault diagnosis, microcontroller, signal processing, data gathering