Obstacle warning system for a vehicle

Communications: electrical – Land vehicle alarms or indicators – Of relative distance from an obstacle

Patent

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340436, 340903, 340904, 342 70, 342 71, 367909, 364460, 36442604, 180169, B60Q 100

Patent

active

057512116

ABSTRACT:
As provided here, an obstacle warning system for a vehicle is capable of issuing an alarm accurately according to the curved state of a road. When the road is curved, the system sets the correction time counter on the basis of the following conditions: whether or not the curvature radius of the curved road is small; whether or not a guardrail is detected immediately ahead of the vehicle; whether or not an erroneously-recognized object, such as a set of guardrail reflectors exhibiting large relative acceleration is immediately ahead of the vehicle; and whether or not the number of obstacles recognized reaches a value indicating that the vehicle is approaching a curved section of the road. When a stationary object enters the field of view indicating that there is a possibility of a collision, the obstacle warning system corrects the warning distance in response to the value of the correction time counter, thus making it possible to avoid a false alarm during cornering.

REFERENCES:
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patent: 4097864 (1978-06-01), Endo et al.
patent: 4165511 (1979-08-01), Wocher et al.
patent: 5291207 (1994-03-01), Kikuchi et al.
patent: 5343206 (1994-08-01), Ansaldi et al.
patent: 5461357 (1995-10-01), Yoshioka et al.
patent: 5479173 (1995-12-01), Yoshioka et al.
patent: 5574463 (1996-11-01), Shirai et al.

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