Since the traditional early warning system can′t warn the wireless sensor network fault effectively,and has low reliability and accuracy due to the various fault types of the wireless sensor network,a wireless sensor network fault warning sys⁃tem with high reliability and accuracy was constructed. The system is composed of the fault data acquisition and screening module, fault identification module,database,and portable communication device. The fault data acquisition and screening module is used to acquire and screen the various fault data in the wireless sensor network,and transmit the fault data to the fault identifi⁃cation module for fault early warning. When the fault identification module can′t warn the fault automatically,the maintenance personnel will involve. The database provides the fault data storage area for the system,and gathers,analyzes and outputs the data,so that the users manage the wireless sensor network. The Android technology is applied by the system software to let the users acquire the fault early warning information through the portable communication device in real time. The algorithm code in the fault data collection process is given. The experimental results show that the system has high reliability and accuracy.%由于无线传感器网络故障种类较多，使得传统的无线传感网络故障预警系统无法对其进行有效预警，可靠性和准确性较低。因此，构建可靠性和准确性较高的无线传感网络故障预警系统，该系统由故障数据采集筛选模块、故障辩证模块、数据库和便携式通信设备组成。故障数据采集筛选模块对无线传感网络中各种故障数据进行采集和筛选，并将故障数据传输到故障辩证模块进行故障预警。当故障辩证模块无法自动进行故障预警时，维修人员将介入处理。数据库为系统提供故障数据的存储区域，并对其进行汇总、解析和输出，以供使用者管理无线传感网络。系统软件利用安卓技术，令使用者通过便携式通信设备实时获取故障预警信息，并给出故障数据采集过程的算法代码。实验结果表明，所设计的系统具有较高的可靠性和准确性。
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