Device for determining torque and associated measuring method

摘要

Torque transmitted via a drive shaft of a motor is contactlessly determined using organic magnetoresistive semiconductor element, unlike known torque sensors that can generate greatly fluctuating measurement signals even at a constant torque. The organic magnetoresistive semiconductor element is mounted on a drive shaft or a coupling thereof. For this purpose, a field generator is provided, which is rigidly connected to the drive shaft or the clutch and which in the environment of the drive shaft generates a magnetic field that is dependent upon the torque. In the environment, the OMR semiconductor element is arranged to be stationary. The OMR semiconductor element has two electrodes between which a voltage source generates an electrical voltage.

主权项

1. A device for determining a torque acting on a drive shaft, comprising:
a field generating device forming a constituent part of one of the drive shaft and a coupling of the drive shaft and generating around the drive shaft a magnetic field in dependence upon the torque; an organic magnetoresistive semiconductor element having two electrodes and forming an organic light-emitting diode, disposed in a stationary manner in an effectively cylindrical layer forming a hollow shape in the magnetic field around the drive shaft; and a voltage source generating an electric voltage between the two electrodes of the organic magnetoresistive semiconductor element.