Camera system and assistance system for a vehicle and a method for operating a camera system

1 . A camera system for a vehicle, comprising:

a holding device which is fastenable to the vehicle and which includes a first communication interface for wireless communication and a switchable magnet;

a camera including a permanent magnet, an accumulator and a second communication interface for wireless communication, the camera being removably fastened to the holding device via magnetic coupling of the permanent magnet of the camera and the switchable magnet of the holding device;

wherein the second communication interface receives position data from the first communication interface via wireless near-field communication to determine a position of the holding device relative to the vehicle when the permanent magnet of the camera is magnetically coupled with the switchable magnet of the holding device;

wherein the camera further includes an antenna for communication via a radio connection with a receiving unit of an assistance system of the vehicle to send an image from the camera together with the position data to the assistance system; and

wherein the holding device further comprises a spring mechanism comprising a plurality of springs arranged opposite to each other at opposing side walls of the holding device, said plurality of springs each exerting a respective compressive force on the camera opposite to a magnetic force of the switchable magnet.

2 . The camera system as claimed in claim 1 , wherein the holding device further comprises an electromagnet which is magnetic when not energized.

3 . The camera system as claimed in claim 1 , wherein the holding device further comprises a memory which stores information representing the position of the holding device.

4 . The camera system as claimed in claim 3 , wherein the information indirectly includes the position as a representative identifier.

5 . The camera system as claimed in claim 3 , wherein the information directly includes the position in relation to a vehicle coordinate system.

6 . The camera system as claimed in one of claim 1 , wherein the first and second communication interfaces each form part of an RFID communication system.

7 . The camera system as claimed in claim 1 , wherein the holding device further comprises an energy transmission device which is electrically couplable to an electrical grid of the vehicle;

wherein the camera further comprises an energy receiving device that is electrically connected to the accumulator; and

wherein electrical energy is wirelessly transmittable from the energy transmission device to the energy receiving device to inductively charge the accumulator.

8 . The camera system as claimed in claim 1 , wherein the holding device further comprises a side panel which laterally surrounds the camera when in a fastened state; and wherein the side panel has a height, and a top side of the side panel is flush with a topside of the camera when in the fastened state.

9 . The camera system as claimed in claim 1 , wherein the holding device further comprises a signal amplifier for extending a range of a radio video signal of the camera.

10 . An assistance system for a vehicle, comprising:

a camera system for the vehicle, said camera system comprising a holding device fastened to the vehicle, the holding device including a first communication interface for wireless communication and a switchable magnet, the camera system further comprising a camera including a permanent magnet, an accumulator and a second communication interface for wireless communication;

at least one further camera; and

a monitor;

wherein the camera is removably fastened to the holding device via magnetic coupling of the permanent magnet of the camera and the switchable magnet of the holding device;

wherein the second communication interface receives position data from the first communication interface via wireless near-field communication to determine a position of the holding device relative to the vehicle when the permanent magnet of the camera is magnetically coupled with the switchable magnet of the holding device;

wherein the further camera comprises an antenna for communication via a radio connection with a receiving unit of the assistance system of the vehicle to send an image from the camera together with the position data to the assistance system;

wherein images from the camera and the at least one further camera are displayed in combined form on the monitor; and

wherein the holding device further comprises a spring mechanism comprising a plurality of springs arranged opposite to each other at opposing side walls of the holding device, said plurality of springs each exerting a respective compressive force on the camera opposite to a magnetic force of the switchable magnet.

11 . The assistance system for the vehicle as claimed in claim 10 , wherein the camera system forms part of a mirror replacement system for the vehicle.