Bearing with temperature sensor

摘要

A temperature sensor (22) is mounted on an inside surface of a stationary race of a bearing around which a rotatable race rotates. Electric signals from the temperature sensor are converted into acoustic signals by an electric-acoustic transducer (24). Without the use of any hard wires, the acoustic signals are received by an acoustic-electric transducer (40) mounted on the outside surface of a bearing housing (10). These electric signals from the acoustic-electric transducer are frequency demodulated and converted into signals which indicate on a display panel the temperatures within the bearing.