Obstacle detection apparatus
First Claim
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1. An obstacle detection apparatus for detecting an obstacle to a vehicle, comprising:
- a sensor section provided at a rear portion of said vehicle including a transmitter which transmits a wave to a predetermined detection area, and a receiver which receives an echo of said wave reflected by said obstacle;
a detection section which detects presence of the obstacle from an output of said sensor section; and
a detection-distance change section which changes a predetermined detection distance within a maximum detection distance,wherein said detection-distance change section adds to said detection distance a difference between a distance from the sensor section to the obstacle and a distance from the rearmost part of the vehicle to the obstacle, when an openable/closable body provided at the rear portion of said vehicle is opened, without changing said maximum detection distance.
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Abstract
An obstacle detection apparatus detects an obstacle to a vehicle by a sensor section including a transmitter which transmits a wave to a predetermined detection area, and a receiver which receives an echo of the wave reflected by the obstacle. The obstacle detection apparatus measures a distance to the obstacle from the output of the sensor section. A detection-distance change circuit changes predetermined detection distances in the maximum detection distance. Alarm means gives an alarm step by step in accordance with the detection distances.
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Citations
5 Claims
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1. An obstacle detection apparatus for detecting an obstacle to a vehicle, comprising:
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a sensor section provided at a rear portion of said vehicle including a transmitter which transmits a wave to a predetermined detection area, and a receiver which receives an echo of said wave reflected by said obstacle; a detection section which detects presence of the obstacle from an output of said sensor section; and a detection-distance change section which changes a predetermined detection distance within a maximum detection distance, wherein said detection-distance change section adds to said detection distance a difference between a distance from the sensor section to the obstacle and a distance from the rearmost part of the vehicle to the obstacle, when an openable/closable body provided at the rear portion of said vehicle is opened, without changing said maximum detection distance. - View Dependent Claims (2, 3, 4, 5)
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Specification