Device for searching a parking space

1. A device for detecting parking spaces for vehicles, comprising:

a distance-measuring beam-type sensor system disposed on a road vehicle and configured to direct a measuring beam into an area in front of the vehicle so as to detect a free area in a traffic space, the free area being a potential parking space; and

a signal processing unit configured to examine, upon a detecting of the free area, a dimension of the free area and a suitability of the free area for parking.

2. The device for detecting parking spaces as recited in claim 1 wherein the beam-type sensor system includes a millimeter wave radar.

3. The device for detecting parking spaces as recited in claim 1 wherein the device is connected to a navigation system configured to provide cartographic information on the free area.

4. The device for detecting parking spaces as recited in claim 1 further comprising a communications device configured to communicate, upon the detecting of the free area, information about the free area.

5. The device for detecting parking spaces as recited in claim 4 wherein the communications device is configured to communicate the information about the free area to at least one of a person and a system disposed at least one of inside and outside the vehicle.

6. A method for detecting parking spaces for vehicles, comprising:

detecting a free area in a traffic space using a distance-measuring beam-type sensor system, the free area being a potential parking space; and

examining, using signal processing, a dimension of the free area and a suitability of the free area for parking based on echo signals of the beam-type sensor system originating from an area in front of a vehicle.

7. The method as recited in claim 6 wherein the echo signals are millimeter waves.

8. The method as recited in claim 7 further comprising providing, to at least one of a person and a system disposed at least one of inside and outside the vehicle, information generated by the signal processing.

9. The method as recited in claim 6 further comprising combining the echo signals so as to form two-dimensional data fields.

10. The method as recited in claim 9 wherein the two-dimensional data fields are capable of being processed using a signal evaluation based on image processing algorithms.

11. The method as recited in claim 9 further comprising determining a position of a parked vehicle using a first two-dimensional data field of the two-dimensional data fields or a sequence of the two-dimensional data fields, wherein the free area includes a gap between the parked vehicle and another vehicle, and wherein the examining includes evaluating the gap separately from the determining.

12. The method as recited in claim 11 wherein the signal processing includes determining geometric information relating to the free area.

13. The method as recited in claim 12 wherein the geometric information includes the dimension of the free area and an orientation of the free area relative to a road.

14. The method as recited in claim 12 wherein the signal processing includes generating a message from the geometric information.

15. The method as recited in claim 14 wherein the message includes at least one of a position, a size and an orientation of the gap with respect to the road.

16. The method as recited in claim 14 wherein the message is for at least one of a person and a system disposed at least one of inside and outside the vehicle.

17. The method as recited in claim 11 wherein the evaluating is performed using information about surroundings of the vehicle.

18. The method as recited in claim 17 further comprising receiving the information from a navigation system.

19. The method as recited in claim 11 wherein the evaluating includes detecting an object disposed in the gap.

20. The method as recited in claim 19 wherein the evaluating includes checking the detected object so as to determine whether the object is moving in a direction of a road.

21. The method as recited in claim 6 wherein the detecting includes detecting persons or moving objects disposed between parked vehicles.

22. The method as recited in claim 6 wherein the detecting includes detecting persons or moving objects disposed in front of a stopped vehicle.