Patent ID: 6119068
Filing Date: 2000-09-12
Classification: B60Q

Abstract:
The rear-end collision alarming device comprising:a following distance detector;a memory unit for storing an output signal value obtained from an operation member linked to a speed control device in a subject vehicle in response to detection of the distance between the subject vehicle and a preceding vehicle by said following distance detector; andalarming means for responding to subsequent detection of the following distance by said following distance detector by determining a possibility of a rear-end collision for issuing an alarm based on said subsequently detected following distance the output signal value obtained from said operation member and the signal value stored in said memory unit,wherein said alarming means includes:first determining means for determining the fact that said subsequently detected distance is shorter than said detected distance;second determining means for responding to a result of the determination by said first determining means by determining whether a difference between the output signal value obtained from said operation member and the output signal value stored in said memory unit falls within a predetermined range or not; andmeans for issuing said second determining means, andwherein said first determining means includes:reference distance setting means for setting a reference distance predetermined correspondingly to an arbitrary value of the following distance; andthird determining means for determining, based on said subsequently detected following distance, whether the preceding vehicle passed through a position at the reference distance corresponding to said detected distance.