Device for determining torque and associated measuring method

A device for determining a torque acting on a drive shaft, comprising:

• a field generating device firmly connected to 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 organic magnetoresistive semiconductor element having two electrodes and forming an organic light-emitting diode, disposed in a stationary manner 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.

A method for determining a torque transmitted via a drive shaft, comprising:

• generating a magnetic field on the drive shaft or on a coupling of the drive shaft as a function of the torque;
• detecting a magnetic field around the drive shaft by an organic magnetoresistive semiconductor element forming an organic light-emitting diode;
• setting an electric variable as a function of the magnetic field detected by the magnetoresistive semiconductor element;
• and
• visually displaying, by the organic light-emitting diode, the torque transmitted by the shaft.