Collision reducing device

Abstract

A collision reducing device (10) comprises a radar (12), an image sensor (14), a collision reduction ECU (40), and a brake ECU (24). A collision prediction section (50) of the collision reduction ECU(40) has a first operating block (52) for allowing a vehicle control unit (46) to make a travelling control when the collision probability is over a reference value in one-frame judgment, a second operating block (54) for allowing the vehicle control unit (46) to make a travelling control when the collision probability is over a reference value in M-frame judgment, and a selecting block (56) for selectively operating one of the first and second operating blocks (52, 54). Therefore, the vehicle control unit (46) can be operated according to one of two judgment number of times. When the first operating block (52) is operated, the speed of collision judgment is ensured with a small judgment number of times. When the second operating block (54) is operated, the malfunction is reduced with a large judgment number of times.

Description

technical field [0001] The present invention relates to a collision mitigation device, and more particularly to a collision mitigation device that performs control that determines the possibility of collision between an object existing around the host vehicle and the host vehicle at each discrete time, thereby reducing the impact of the collision. Background technique [0002] In recent years, driving assistance devices such as collision reduction devices, inter-vehicle distance control devices, and tracking devices have been developed. For example, Japanese Patent Application Laid-Open No. 2005-100232 describes a technique for accurately determining the possibility of collision with respect to an obstacle by determining the possibility of collision with respect to an obstacle located in the moving direction of the vehicle, Effectively enables the collision mitigation device to work. [0003] However, in the above-mentioned technology, since the possibility of collision wit...

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Problems solved by technology

[0003] However, in the above-mentioned technology, since the possibility of collision with an obstacle is independently judged every moment, if the collision mitigation device is activated by one determination of the possibility of collision, there is a possibility that even if there is actually no Possibility of collision also conducts collision mitigation control actions for erroneous action concerns

On the other hand, referring to the judgments made in the past, if the collision mitigation device is operated through multiple judgments that there is a possibility of collision, there is a possibility that the judgment process will take time and the operation of the collision mitigation device will slow down.

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