Abstract: An electronic obstacle detection system for guiding and warning a motorist of obstacles in the detection area while backing-up. The main components of the system include a pair of sensor clusters to be affixed to the rear of the vehicle, a pair of exterior visual indicators, and an audio-visual indicator located in the vehicle. Each of the sensor clusters are encased in a housing having angled, stepped portions configured to provide complete area coverage of transmitted and received signals.

Abstract: An electronic parking-aid device for guiding a motorist when parking a vehicle in a parking bay. The device includes a transmitter and receiver which respectively transmits a signal towards the front of an approaching vehicle and receives the signal reflected thereby. A computing apparatus coupled to the transmitter and receiver for computing the distance from the front of the vehicle to the device and a logic apparatus coupled to the computing apparatus compares the computed distance with a predetermined threshold so as to generate an output signal if the computed distance is less than the threshold. The logic apparatus compares the computed distance to two different thresholds so as to generate corresponding output signals if the computed distance is less than the lower threshold, or lies between the two thresholds, or is greater than the larger threshold.