Collision avoidance system

1. A collision avoidance system for a vehicle, comprising:

a three-dimensional-imaging-device arranged to map a three dimensional object located within a surrounding environment of a vehicle;

a positioning module arranged to superimpose a potential position of a body of the vehicle on to the mapped object;

an impact detection module arranged to distinguish between an impact location on the mapped object above a ride height of the body of the vehicle and a clearance location on the mapped object below a ride height of the body of the vehicle based on the potential position of the body of the vehicle on the mapped object; and

a communication module for communicating the impact location to a collision avoidance aid.

2. The collision avoidance system of claim 1 , wherein the three-dimensional-imaging-device is located at a front end of the vehicle for observing an environment in front of the vehicle.

3. The collision avoidance system of claim 1 , wherein the three-dimensional-imaging-device is located at a rear end of the vehicle for observing an environment behind the vehicle.

4. The collision avoidance system of claim 1 , wherein the positioning module comprises a detector for detecting a vehicle state and a geometric model of the vehicle, the positioning module arranged to determine the potential position of the body of the vehicle based on the vehicle state and the geometric model of the vehicle.

5. The collision avoidance system of claim 4 , wherein the vehicle state is selected from a list including suspension setting, vehicle velocity, and steering wheel angle.

6. The collision avoidance system of claim 1 , wherein the collision avoidance aid comprises a display arranged to display the impact location superimposed on to the mapped object within the surrounding environment of the vehicle.

7. The collision avoidance system of claim 6 , wherein the display is situated within a cabin of the vehicle for use by a driver of the vehicle.

8. The collision avoidance system of claim 6 , wherein the display comprises a remote user interface device communicable with the communication module over a network.

9. The collision avoidance system of claim 1 , wherein the collision avoidance aid comprises an audio device.

10. The collision avoidance system of claim 1 , wherein the collision avoidance aid comprises a vehicle adjustment system arranged to adjust the vehicle automatically to avoid a collision between the body of the vehicle and the mapped object.

11. The collision avoidance system of claim 10 , wherein the vehicle adjustment system comprises a suspension system arranged to adjust a ride height of the vehicle.

12. The collision avoidance system of claim 10 , wherein the vehicle adjustment system comprises a drive or braking system arranged to adjust a velocity of the vehicle.

13. The collision avoidance system of claim 10 , wherein the vehicle adjustment system comprises a steering system arranged to control a turning path of the vehicle.

14. A vehicle comprising the collision avoidance system of claim 1 .

15. A method of sensing a collision risk comprising:

mapping a three dimensional object located within a surrounding environment of a vehicle;

superimposing a potential position of a body of the vehicle on to the mapped object;

distinguishing between an impact location on the mapped object above a ride height of the body of the vehicle and a clearance location on the mapped object below a ride height of the body of the vehicle based on the potential position of the body of the vehicle on the mapped object; and

communicating the impact location to a collision avoidance aid.

16. The method of claim 15 , further comprising:

adjusting a configuration of the vehicle automatically to avoid the body of the vehicle contacting the mapped object to thereby avoid a collision.

17. The method of claim 15 , further comprising:

displaying the impact location to a navigator of the vehicle.