06339369 is referenced by 28 patents.
A retrofittable collision warning apparatus for vehicles is described. The collision warning apparatus comprises a base unit that is located within the vehicle cabin and a plurality of remote units located around the periphery of the vehicle. The remote units respond to inputs from the base unit, measure the distance between the vehicle and obstacles in the proximity, and utilize wireless transmission to communicate obstacle position information to the base unit. The base unit accepts operator commands, utilizes wireless communication to transmit control signals to the remote units and receive obstacle position information from the remote units, communicates obstacle position information to the operator through audio and visual signals, and controls operation of the collision warning apparatus. Base unit and remote units that comprise the collision warning apparatus employ power management to extend the lifetime of power sources and communicate through wireless means. These attributes make this collision warning apparatus well suited for quick and easy retrofit to existing vehicles.