Torque detection unit and vehicle

A torque detection unit for actively detecting a torque acting on a shaft or a crankshaft of a vehicle, which is drivable by muscle power and/or by motor power along a rotational axis, comprising:

• an excitation unit to apply a magnetic field which changes over time to the shaft;
• and
• a first sensor unit and a second sensor unit to detect a magnetic field carried by the shaft;
• wherein the first sensor unit and the second sensor unit respectively have four reception coils,
• wherein the first sensor unit and the second sensor units have different orientations with respect to one another so that they, during operation, are oriented differently from one another with respect to the shaft, and in particular with respect to the rotational axis, and
• wherein the mutual orientation of the first sensor unit and the second sensor unit are configured so that the first sensor unit acts as a measuring sensor and detects the magnetic field excited by the exciter unit and carried by the shaft and that the second sensor unit acts as a compensation sensor, in which the sensitivity for the magnetic field carried by the shaft is lower.

A vehicle drivable by muscle power and/or by motor power, comprising:

• at least one wheel;
• a drive to drive the at least one wheel;
• and
• a torque detection unit to detect a torque acting on a shaft of the drive, in which the drive is monitorable and/or controllable based on the detected torque;
• wherein the torque detection unit includes:
• an excitation unit to apply a magnetic field which changes over time to the shaft;
• and
• a first sensor unit and a second sensor unit to detect a magnetic field carried by the shaft;
• wherein the first sensor unit and the second sensor unit respectively have four reception coils,
• wherein the first sensor unit and the second sensor units have different orientations with respect to one another so that they, during operation, are oriented differently from one another with respect to the shaft, and in particular with respect to the rotational axis, and
• wherein the mutual orientation of the first sensor unit and the second sensor unit are configured so that the first sensor unit acts as a measuring sensor and detects the magnetic field excited by the exciter unit and carried by the shaft and that the second sensor unit acts as a compensation sensor, in which the sensitivity for the magnetic field carried by the shaft is lower.

A method for generating a torque signal of a shaft that is compensated for interference signals, the method comprising:

• detecting a magnetic field that is excited by an excitation unit of a torque detection unit, wherein the torque detection unit includes an excitation unit to apply a magnetic field that is changeable over time on the shaft, and a first sensor unit and a second sensor unit to detect a magnetic field carried by the shaft, wherein the first sensor unit and the second sensor unit respectively have four reception coils, and wherein the first sensor unit and the second sensor unit have different orientations in relation to each other so that they are oriented differently from each other in operation in relation to the shaft and in particular in relation to the axis of rotation, wherein the mutual orientation of the sensor units is configured that the first sensor units acts as a measuring sensor and detects the magnetic field that is excited by the excitation unit and carried by the shaft and that the second sensor unit acts as a compensation sensor, in which the sensitivity for the magnetic field carried by the shaft is lower;
• generating the torque signal, which is compensated for the interference signals, and feeding a voltage changeable over time for generating an alternating magnetic field that is changeable over time, into the excitation unit;
• wherein the torque signal, which represents a torque acting on the shaft, is determined based on the received values of the sensor units.