化学化工实验室无线安全监测系统故障诊断方法研究  

Fault Diagnosis Method for Wireless Security Monitoring System in Chemistry and Chemical Engineering Laboratory

作　　者：李智敏[1] 陈祥光[1] 吴磊[1] 魏延富[1] 

机构地区：[1]北京理工大学化工与环境学院,北京100081

出　　处：《北京理工大学学报》2015年第10期1062-1066,1073,共6页Transactions of Beijing Institute of Technology

基　　金：中国博士后科学基金资助项目(20100480208)

摘　　要：针对化学化工实验室的安全问题设计了一种无线安全监测系统,通过无线通信模块传输现场检测数据和经压缩后的图片,实现了实验室安全远程无线监测与监视的功能.由于监测系统中的无线通信模块能耗较高,长期运行容易发生故障,其故障检测方式也较为复杂.为了在线检测无线通信模块的故障和识别其类型,以确保无线安全监测系统的可靠性,研究了无线通信模块的电流特性,建立了基于模糊神经网络的故障诊断模型,可实现对无线通信模块在不同状态下的故障进行诊断.实验结果表明,与BP神经网相比,采用模糊神经网络的无线通信模块故障诊断方法训练耗时短、收敛快、训练误差和验证误差小、诊断正确率高,能够在线检测无线通信模块的多种类型故障,明显提高了无线安全监测系统的可靠性,具有较好的实际应用价值.For the safety problem of chemistry and chemical engineering laboratory, a kind of wireless security monitoring system was designed. It can transmit locale sensor parameters and compressed images via wireless communication module, and realize the function of laboratory safety remote wireless monitoring and surveillance. The wireless communication module in monitoring system consumes much energy and it prone to malfunction in long term running. The fault detection method for wireless communication module was also complicated. In order to detect faults of wireless communication module on line and identify their types as well as ensure the reliability of wireless safety monitoring system, the current characteristics of the wireless communication module was studied, and a fault diagnosis model based on fuzzy neural network was established. It can diagnose faults of the wireless communication module in different status. Experimental results show that the fault diagnosis method of wireless communication module base on fuzzy neural network has many advantages as compared to BP neural network, for instance short training time, fast convergence, small training error and validated error, high diagnostic accuracy, and a variety of faults types for wireless communication module can be detected on line. Therefore, the proposed diagnose method improves the reliability of wirelesssecurity monitoring system and has good practical value.

关 键 词：无线传感器网络(WSN) 模糊神经网络 故障诊断 电流模型 化学化工实验室 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]