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Motor vehicle having a capacitive deformation sensor for collision detection

A technology of motor vehicles and sensors, applied to vehicle components, vehicle safety arrangements, pedestrian/passenger safety arrangements, etc., can solve the problems of difficult identification of the side being collided, short judgment time period of the triggering and restraining mechanism, and inability to evaluate overlaps, etc. To achieve the effect of simple structure

Active Publication Date: 2014-02-05
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the point-based detection function of the sensor, it is almost impossible to evaluate the overlap with the collision partner
Due to the very short evaluation time period until the activation or triggering of the restraint mechanism, in the event of a crash, the identification of the side impacted is difficult

Method used

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  • Motor vehicle having a capacitive deformation sensor for collision detection
  • Motor vehicle having a capacitive deformation sensor for collision detection
  • Motor vehicle having a capacitive deformation sensor for collision detection

Examples

Experimental program
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Embodiment Construction

[0023] figure 1 A partial view of the front of a motor vehicle 1 according to the invention, here with a capacitively operating sensor 2 integrated on the front side, is shown. It goes without saying that such a sensor 2 can also be arranged on the rear of the vehicle.

[0024] In the exemplary embodiment, the sensor 2 is arranged behind the front apron 3 on a metal component in the form of a bumper 4 , which is itself fastened to a side member 5 , the bumper 4 being part of the sensor 2 . The sensor 2 extends over at least half the length and height of the bumper 4 , preferably almost its entire length and height, so that the sensor area is as large as possible.

[0025]The sensor 2 is designed as a capacitively operating area sensor, ie in the form of a plate capacitor. Such flat plate capacitors are characterized by two plate-shaped electrodes between which a dielectric is arranged. In the exemplary embodiment shown, the two capacitor electrodes are realized by means of ...

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PUM

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Abstract

The invention relates to a motor vehicle comprising a fender provided at the front and the rear and at least one sensor device comprising a capacitively operating sensor and an associated control device for collision detection, wherein the sensor (2) is arranged on a fender (4) and is formed as a surface sensor which extends over at least half the width of the fender (4), wherein the control device (10) is able to determine information resulting from a collision with an object by using the capacitance of the sensor (2), which changes as a result of collision-induced deformation of the sensor (2).

Description

technical field [0001] The invention relates to a motor vehicle comprising metal components arranged at the front, rear and / or sides, in particular a bumper, and at least one sensor device comprising capacitively operating sensors and configured for Controls for collision detection. Background technique [0002] Modern motor vehicles include various restraint mechanisms for occupant protection, such as air bags or seat belt pretensioners. Such a restraint mechanism is activated by a corresponding control device in the event of a crash, wherein the activation is not static, but is also designed depending on the crash process or crash load, if possible. For this reason, in modern motor vehicles there are crash detection possibilities which allow the detection of data which can be used as a basis for calculating the crash load. Typically, acceleration sensors are used at the front of the vehicle for this purpose, but in which, see eg JP2000326808A, the data can also be detect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/0136
CPCB60R21/0136
Inventor M·盖斯
Owner AUDI AG