Micropelt GmbH, Freiburg, Germany, offers the TE-Power RING wireless condition monitoring system for bearings, transmissions, and similar parts that wear during operation. The integrated, battery-free, on-shaft device monitors the parts' condition to determine when and if they need maintenance or replacement. The system is powered by a bearing's frictional heat and can measure temperature and pressure and record vibration signals. The system incorporates the company's high-voltage energy harvesting thermogenerator chips, each of which has an approximate 14 by 14 mm footprint and can convert a bearing's frictional heat into milliwatts of electricity. The system uses TI's ultra-low-power wireless technology to transmit data via a wireless network.
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