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Collision predicting apparatus and collision predicting method

A prediction method and equipment technology, applied in measurement devices, anti-collision systems, transportation and packaging, etc., can solve problems such as inability to accurately predict collisions, and achieve the effect of improving accuracy

Active Publication Date: 2008-03-12
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if there are multiple obstacles (subject objects) that may collide with the host vehicle and the obstacles (subject objects) are replaced by other obstacles (subject objects) in an instant, the system sometimes cannot make an accurate prediction about the collision

Method used

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  • Collision predicting apparatus and collision predicting method
  • Collision predicting apparatus and collision predicting method
  • Collision predicting apparatus and collision predicting method

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Embodiment Construction

[0024] In the following description, the present invention will be described in detail based on exemplary embodiments.

[0025] FIG. 1 is a schematic generalized block diagram of a collision prediction device according to one embodiment. The collision prediction device actuates the occupant protection device 20 based on the prediction of the vehicle collision provided by the electronic control unit 10 .

[0026] The electronic control unit 10 (hereinafter, simply referred to as "ECU 10") has, as its main components, a microcomputer formed of a CPU, ROM, RAM, timer, and the like. The ECU 10 acquires detection values ​​from various sensors and devices, and executes the routines shown in FIGS. 2 and 3 . ECU 10 is connected to vehicle speed sensor 11 , steering angle sensor 12 , yaw rate sensor 13 , and radar sensor 14 through communication lines (not shown) such as LAN lines or serial lines arranged in the own vehicle. Since detection values ​​from various sensors are output to...

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Abstract

A collision predicting apparatus detects subject targets present in the traveling course of the own vehicle by using the relative distance and the relative velocity, etc. The apparatus also calculates the predicted collision time of each subject target on the basis of the relative distance and the relative velocity. The apparatus also detects the relative lateral position of each subject target, and corrects the relative lateral position. The apparatus then executes a collision-predicted target selecting routine, in which the predicted collision time of each subject target that does not meet a predetermined condition is set at a predetermined maximum value. The apparatus selects a subject target that meets the predetermined condition as a collision subject target, and predicts whether the collision subject target will collide with the own vehicle.

Description

technical field [0001] The invention relates to a collision prediction device and a collision prediction method for predicting whether an own vehicle will collide with a collision target. Background technique [0002] Regarding the collision prediction system, related art technology is disclosed in, for example, Japanese Patent Unexamined Publication No. 8-254576. In the collision prediction system of the related art technology, ultrasonic waves are transmitted, and from the time required for receiving Doppler waves reflected from obstacles (subject objects), the relative The relative speed of specific obstacles (subject objects) around the own vehicle. In order to calculate the relative velocity, the collision prediction system averages the data used as a basis for calculating the relative velocity in order to select valid data. The system then also averages the selected valid data and takes the averaged data obtained by averaging in order to calculate highly accurate rel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/93B60R21/01B60R21/00B60R21/0134B60R21/05B60R21/16B60R22/48B60W30/08B62D1/19G08G1/16
CPCG01S2013/9353B60R21/0134G01S13/726B60R21/013G01S2013/932
Inventor 森泉清贵村桥泰彦
Owner TOYOTA JIDOSHA KK