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Collision detection device

A technology for collision detection and detection of objects, applied in measurement devices, transportation and packaging, geophysical measurement, etc., and can solve problems such as wrong collision and wrong determination

Inactive Publication Date: 2007-10-17
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, false determinations can be limited
[0006] However, in this case, it is difficult for the temperature detection unit to detect a fixed object that is not a heat source
Therefore, in the case where the vehicle collides with an obstacle other than a person (which is closer to the vehicle than the detection object of the temperature detection unit), in a state where the temperature signal from the temperature detection unit indicates that the detection object is a person, an error will occur. determine with certainty that a collision has occurred between a vehicle and a person

Method used

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Examples

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no. 1 example

[0026] A collision detection device 1 according to a first embodiment of the present invention will now be described with reference to FIGS. 1A-6 . The collision detection device 1 is suitable to be installed on the vehicle 80 so as to detect the collision of the vehicle and classify and distinguish collision obstacles.

[0027] For example, the collision detection device 1 is suitable for use in an airbag system of a vehicle 80 . As shown in FIGS. 1A and 1B , the airbag system may include a collision detection device 1 , an airbag control device 50 , an airbag 70 and the like. In the event of a collision between the vehicle and a person, the airbag 70 will be deployed inside the hood of the vehicle or outside the hood, so that the impact on the person can be reduced.

[0028] Specifically, when a collision between a vehicle and a person is detected, the collision detection device 1 will output a collision signal to the airbag control device 50 . Accordingly, the airbag cont...

no. 2 example

[0118] According to the second embodiment of the present invention, as shown in FIG. 7, the vibration detection part 12 of the human body detection sensor 30 may be arranged at a position different from that of the first embodiment described above.

[0119] In this case, the vibration detection portion 12 may also be provided at the surface of the silicon activation layer 11c on one side of the supporting member 11a. In this way, the infrared rays can reach the vibration detection portion 12 without passing through the semiconductor board 11, so that the board 11 can be constituted opaque with respect to the infrared rays. Also, since the attenuation of infrared rays can be reduced, the sensitivity of the human body detection sensor 30 can be improved.

no. 3 example

[0121] In the above-described embodiments, the piezoelectric vibration detection section 12 is provided for the detection part 15 of the detection unit 10 . However, the vibration detection section 12 is not limited to piezoelectric vibration detection means.

[0122] For example, according to the second embodiment of the present invention, capacitive vibration detection section 12 may be used. This vibration detecting part has an infrared absorbing film 18 (infrared sensitive film) on a vibrating surface, and utilizes a change in capacitance between electrodes 16 and 17 to detect ultrasonic waves. Since the capacitive vibration detection part 12 has a wide resonant frequency, the allowable deviation range of the detection unit 10 can be increased. Therefore, yield can be improved.

[0123] As shown in FIG. 8A , the capacitive vibration detection section 12 has a first electrode 16 formed at the first insulating film 11 b and a second electrode 17 made of a material that can...

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PUM

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Abstract

A collision detection device for a vehicle includes a first direction signal outputting unit which detects an intensity of heat ray radiated from a detection object which is near or contacts the vehicle to outputs a first direction signal, a second direction signal outputting unit which detects ultrasound wave sent by a sending member and reflected by the detection object to output a second direction signal, an impact signal outputting unit which detects an impact on the vehicle to output an impact signal, and a control unit. The control unit determines an occurrence of a collision between the vehicle and a human, in the case where it is determined that a difference between the first direction signal and the second direction signal is within a first predetermined range and the impact signal is outputted.

Description

technical field [0001] The invention relates to a collision detection device. Background technique [0002] Generally, for example, see JP-11-28994A, a collision detection device is mounted on a vehicle to detect a collision between the vehicle and a person. In this case, the collision with a person is determined based on a signal waveform output from a load sensor or a displacement sensor provided in a front bumper of the vehicle and a signal waveform output from a vehicle speed sensor. That is, based on the fact that the signal waveform in the case of a collision between a vehicle and a person based on a load sensor, etc. recovers earlier than that in a case of a collision between a vehicle and a fixed object such as another vehicle, a wall, a tree, and a utility pole, it is determined that Collision with people. [0003] However, according to JP-11-28994A, in the case where the output waveform of the load sensor or the like is not within a predetermined range, it will b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/0136G01S15/93B60R21/00B60R21/01B60R21/34B60R21/36G01S15/931G01V11/00
CPCG01S2015/938B60R21/013B60R21/0134B60R21/36G01S15/931B60R21/0132B60R21/0136B60R21/01338B60R2021/01322
Inventor 杉浦真纪子吉田贵彦丰田稻男
Owner DENSO CORP
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