Torque sensor arrangement for use in e.g. hydraulic steering system of motor vehicle to detect torque acting on steering shaft, has sensor module including crown antenna with winding, where outer region of winding partially encloses shaft

摘要

The arrangement has a sensor module (2) directly or indirectly connected with a shaft (1). A communication module (3) and the sensor module are wirelessly communicated with each other in a direction. The sensor module includes a crown antenna (4) e.g. horseshoe shaped crown antenna, with a winding (41), where an outer region of the winding partially encloses the shaft. The winding includes winding segments (41a, 41b) i.e. circular segments, of different lengths. The crown antenna of the sensor module is inductively coupled with a crown antenna (5) of the communication module. An independent claim is also included for a method for measuring torque acting on a shaft.