Measuring device for detecting rotary motion of shaft, has accumulator comprising mechanical-electrical converter rotated with shaft, where converter comprises seismic mass, and circuit device rotated with shaft and containing radio unit

摘要

The device has an energy accumulator (36) obtaining energy from rotary motion, and an electronic circuit device (29) supplied with operation energy by the accumulator. A sensor device comprises a mechanical-electrical converter (3) i.e. inductive converter, rotated with a horizontally aligned shaft. The converter comprises a seismic mass movably arranged towards the shaft in a radial manner. The accumulator has a mechanical-electrical converter rotated with the shaft. The latter converter comprises a seismic mass, and the circuit device rotated with the shaft contains a radio unit (35).