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Collision determining apparatus for vehicle

A technology for determining device and vehicle collision, which is applied to vehicle components, vehicle safety arrangements, and vehicle accessories for anti-theft use, etc., can solve the problems of rising system costs, inability to meet occupant protection performance, etc., and achieve the effect of reducing occupant protection performance.

Inactive Publication Date: 2012-04-11
KEIHIN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Since the front collision sensor is a major factor that increases the system cost, it is ideal to perform collision judgment only by the unit sensor built into the SRS unit, but as mentioned above, only the unit sensor cannot satisfy the required occupant protection performance

Method used

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  • Collision determining apparatus for vehicle
  • Collision determining apparatus for vehicle
  • Collision determining apparatus for vehicle

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0027] First, the first embodiment of the present invention will be explained. Figure 1A It is a schematic diagram of the structure of the SRS airbag system of this embodiment. Such as Figure 1A As shown, the SRS airbag system of this embodiment includes an SRS unit 1 (vehicle collision determination device) arranged in the center of the vehicle 100 and an airbag 2 (occupant protection device) arranged on the driver's seat and the passenger seat of the vehicle 100.

[0028] The SRS unit 1 is an ECU (Electronic ECU) that determines whether the vehicle 100 has a frontal collision (collision determination) based on the output signals of the built-in sound sensor 11 and the acceleration sensor 12, and performs activation control of the airbag 2 based on the collision determination result. Control Unit). The airbag 2 is deployed in accordance with the ignition signal input from the SRS unit 1, and is an occupant protection device that reduces the damage of the occupant caused by the f...

no. 2 example

[0051] Next, the second embodiment of the present invention will be explained. In the following description of the second embodiment, the description will focus on the differences from the first embodiment, and the same components as those of the first embodiment will be given the same reference numerals, and description will be omitted.

[0052] image 3 It is a block diagram of the main part of the SRS unit 1A of the second embodiment. Such as image 3 As shown, the SRS unit 1A of the second embodiment is provided with a main collision determination unit 16 having a different structure from the main collision determination unit 13 of the first embodiment.

[0053] The main collision determination unit 16 determines whether a collision that requires the deployment of the airbag 2 has occurred based on the sound data S(t) input from the sound sensor 11 and the acceleration data G(t) input from the acceleration sensor 12, and includes a first calculation unit 16a (First calculation...

no. 3 example

[0060] Next, a third embodiment of the present invention will be explained. In the following description of the third embodiment, the description will focus on the differences from the first and second embodiments, and the same components as those of the first and second embodiments will be given the same reference numerals, and description will be omitted.

[0061] Figure 4 It is a block diagram of the main part of the SRS unit 1B of the third embodiment. Such as Figure 4 As shown, the SRS unit 1B of the third embodiment includes a vibration sensor (vibration detection mechanism) 20, a BPF (band pass filter: first extraction mechanism) 21, an LPF (low pass filter: second extraction mechanism) 22, The main collision determination unit 13 similar to the first embodiment (may be the same main collision determination unit 16 as the second embodiment), the safety determination unit 14 and the AND unit 15 similar to the first and second embodiments.

[0062] The vibration sensor 20...

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Abstract

A collision determining apparatus for a vehicle includes a vibration detection device that detects a high-frequency vibration of an audio band generated in a vehicle and a low-frequency vibration of the audio band which is lower than the high-frequency vibration; and a collision determining device that determines whether or not a collision requiring an activation of an occupant protection apparatus of the vehicle has occurred based on the detection result of the high-frequency vibration and the low-frequency vibration.

Description

Technical field [0001] The present invention relates to a vehicle collision determination device. Background technique [0002] Generally, as a system for protecting occupants in a vehicle collision, an SRS (Supplemental Restraint System) airbag system is known. The SRS airbag system detects vehicle collisions based on acceleration data obtained from acceleration sensors installed in various parts of the vehicle, and activates occupant protection devices such as airbags. [0003] In the past, it has been known to determine whether or not it occurs based on acceleration data obtained from a plurality of front collision sensors installed in the front of the vehicle and a unit sensor in the SRS unit (ECU for unified control of the SRS airbag system) installed in the center of the vehicle. Frontal collision (including frontal collision, side collision, oblique collision) is determined, and the occupant protection device activation control technology is performed based on the collision...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/0136
CPCB60R25/00
Inventor 大崎达治
Owner KEIHIN CORP