DEVICE FOR MEASURING A RELATIVE ROTATION SPEED AND/OR A RELATIVE ANGULAR POSITION BETWEEN A FIRST ROTATING ELEMENT AND A SECOND ROTATING ELEMENT MOUNTED TO ROTATE RELATIVE TO A STATIC PART

摘要

A device for measuring a relative rotation speed and/or a relative angular position between a first rotating element (2) and a second rotating element (3). The device includes a structure for generating a magnetic field rotating at a magnetic rotation speed representing a rotation speed of the first rotating element and a sensor (5) mounted to rotate and adapted to produce from the rotating magnetic field a measurement signal representing the relative rotation speed and/or the relative angular position. The device also has a processor (11) positioned on the static part and intended to acquire the measurement signal. A transmitter is adapted to transmit the measurement signal to the processor from the sensor.