Rotation angle sensor system, lidar system, work device and operating method for a lidar system

A LIDAR system for visually detecting a visual field for a work device and/or for a vehicle, the LIDAR system comprising:

• a rotor;
• a stator;
• a drive for rotor relative to the stator about a rotational axis;
• and
• a rotation angle sensor system for determining a rotation angle and/or an orientation between the rotor and the stator, the rotation angle sensor system including a coil system as a sensor element for receiving a magnetic alternating field, which is stator-based and attached in a rotatably fixed manner to the stator, and a target for actively generating a magnetic alternating field, which is rotor-based and attached in a rotatably fixed manner to the rotor, wherein the coil system and the target are attached to the stator and to the rotor in such a way that at least one of (i) different overlaps occur, and (ii) different spatial proximities occur, between the coil system and the target as a function of at least one of:
• (i) a rotation angle between the stator and the rotor, and (ii) an orientation between the stator and the rotor, with a correspondingly different effect on the magnetic alternating field of the target on the coil system.

A vehicle that includes a LIDAR system for visually detecting a visual field, the LIDAR system comprising:

• a rotor;
• a stator;
• a drive for rotor relative to the stator about a rotational axis;
• and
• a rotation angle sensor system for determining a rotation angle and/or an orientation between the rotor and the stator, the rotation angle sensor system including a coil system as a sensor element for receiving a magnetic alternating field, which is stator-based and attached in a rotatably fixed manner to the stator;
• and a target for actively generating a magnetic alternating field, which is rotor-based and attached in a rotatably fixed manner to the rotor, wherein the coil system and the target are attached to the stator and to the rotor in such a way that at least one of (i) different overlaps occur, and (ii) different spatial proximities occur, between the coil system and the target as a function of at least one of:
• (i) a rotation angle between the stator and the rotor, and (ii) an orientation between the stator and the rotor, with a correspondingly different effect on the magnetic alternating field of the target on the coil system.

An operating method for a LIDAR system, the LIDAR system including a rotor, a stator, a drive for rotor relative to the stator about a rotational axis, and a rotation angle sensor system for determining a rotation angle and/or an orientation between the rotor and the stator, the rotation angle sensor system including a coil system as a sensor element for receiving a magnetic alternating field, which is stator-based and attached in a rotatably fixed manner to the stator, and a target for actively generating a magnetic alternating field, which is rotor-based and attached in a rotatably fixed manner to the rotor, wherein the coil system and the target are attached to the stator and to the rotor in such a way that at least one of (i) different overlaps occur, and (ii) different spatial proximities occur, between the coil system and the target as a function of at least one of:

• (i) a rotation angle between the stator and the rotor, and (ii) an orientation between the stator and the rotor, with a correspondingly different effect on the magnetic alternating field of the target on the coil system, the method comprising:
• wirelessly receiving in a rotor a supply signal;
• and
• at least one of:
• converting the supply signal in at least one of amplitude, frequency and phase, using a converter, to operate the target of the rotation angle sensor and to excite transmitter coils of the target, and or
• converting the supply signal using a rectifier to operate additional components of the LIDAR system in the rotor, the additional components including at least one of:
• (i) a drive of the rotor, (ii) a transmitter optical system encompassed by the rotor that includes a light source unit, and (iii) a receiver optical system that includes a detector system.