A wireless sensor system for real-time monitoring and fault detection of motor arrays

摘要

This paper presents a wireless fault detection system for industrial motors that combinesvibration, motor current and temperature analysis, thus improving the detection of mechanical faults.The design also considers the time of detection and further possible actions, which are also importantfor the early detection of possible malfunctions, and thus for avoiding irreversible damage to themotor. The remote motor condition monitoring is implemented through a wireless sensor network(WSN) based on the IEEE 802.15.4 standard. The deployed network uses the beacon-enabled mode tosynchronize several sensor nodes with the coordinator node, and the guaranteed time slot mechanismprovides data monitoring with a predetermined latency. A graphic user interface offers remote accessto motor conditions and real-time monitoring of several parameters. The developed wireless sensornode exhibits very low power consumption since it has been optimized both in terms of hardwareand software. The result is a low cost, highly reliable and compact design, achieving a high degree ofautonomy of more than two years with just one 3.3 V/2600 mAh battery. Laboratory and field testsconfirm the feasibility of the wireless system.