Detection-system and control method thereof
View Patent ↗A detection-system for a vehicle to detect the presence of one or more object relative to the vehicle comprises a module-housing, a radar sensor component located within the module-housing for emitting a radar beam and receiving reflected signals in a detection mode. The radar sensor component comprises means for emitting a defrost beam in a defrost mode; the defrost beam overlapping the radar beam. The detection-system further comprises an absorber material located in the field of view of the defrost beam to absorb the energy of the defrost beam and to warm up in view to provide a defrosting effect.
1. A detection-system for a vehicle to detect the presence of one or more objects relative to the vehicle, said detection-system comprising:
a module-housing; and
a radar sensor component located within the module-housing for emitting a radar beam and receiving reflected signals in a detection mode, wherein
the radar sensor component comprises means for emitting a separate defrost beam in a defrost mode, said separate defrost beam overlapping the radar beam, and
the detection-system further comprising an absorber material located in the field of view of both the defrost beam and the radar beam to absorb the energy of the defrost beam and to warm up in view to provide a defrosting effect.
2. The detection-system according to claim 1 , wherein the absorber material is arranged on an outer surface of the module-housing.
3. The detection-system according to claim 1 , wherein the absorber material is a metamaterial that absorbs the defrost beam frequency and lets pass through the radar beam frequency.
4. The detection-system according to claim 1 , wherein the means for emitting a defrost beam comprises a radar frequency divider.
5. The detection-system according claim 1 , wherein the module-housing is further comprising a microcontroller adapted to operate the radar sensor component in a detection mode, in a defrost mode or in a combined defrost and detection mode.
6. The detection-system according claim 1 , wherein the vehicle includes a body part, and the absorber material is thermally coupled to the body part.
7. The detection-system according to claim 6 , wherein the body part of the vehicle is a bumper.
8. The detection-system according to claim 6 , wherein the body part of the vehicle is a windshield.
9. The detection-system according to claim 1 , wherein the absorber material is a translucent material.
10. The detection-system according to claim 1 , wherein the module-housing comprises a camera component, and the absorber material is located in a field of view of the camera such that the camera component is supervising the progress of the defrosting.
11. The detection-system according to claim 1 , wherein the radar beam and the defrost beam are emitted from different antennas.
12. The detection-system according to claim 1 , wherein the radar beam and the defrost beam are emitted from a common antenna.
13. The detection-system according to claim 1 , wherein the defrost beam and the radar beam are emitted at different frequencies.
14. The detection-system according to claim 1 , wherein the defrost mode is activated separately from the detection mode.
15. The detection-system according to claim 1 , wherein the defrost mode is activated simultaneously to the detection mode.
16. A control method for a detection-system, said method comprising the steps of:
operating the detection-system in a radar mode by using a radar sensor component to emit a radar beam and to receive reflected radar beam signals; and
operating the detection-system in a defrost mode by using the radar sensor component to emit a separate defrost beam toward an absorber material placed in the field of view of both the defrost beam and the radar beam and thermally coupled with a body part of a vehicle through which the radar beam passes, the separate defrost beam being suitable for warming up the absorber material and for providing a defrost effect on the body part.
17. The control method according to claim 16 , wherein the method further comprises the step of
operating the detection-system in a combined defrost and detection mode by using the radar sensor component to emit simultaneously the radar beam and the defrost beam.
18. The control method according to claim 16 , wherein the defrost beam and the radar beam are emitted at different frequencies.
19. The control method according to claim 16 , wherein the defrost mode is activated separately from the detection mode.
20. The control method according to claim 16 , wherein the radar beam and the defrost beam are emitted from one of a common antenna and different antennas.