Apparatus for controlling an airbag module

Patent metadata

Field	Value
Publication number	US-9561769-B2
Application number	US-201414224512-A
Country	US
Kind code	B2
Filing date	Mar 25, 2014
Priority date	Mar 25, 2013
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

An apparatus for controlling an airbag module in a vehicle cabin is provided that includes a control apparatus for triggering the airbag module, a plenoptic camera configured as a camera module that generates image data having depth information within a prespecifiable region in the vehicle cabin with the prespecifiable region comprising at least a first and a second partial region of a trigger region of the airbag module, and an evaluation device which determines on the basis of the image data whether an object, in particular a vehicle occupant, is located in the first or the second partial region and the control apparatus controls the airbag module in dependence on the position of the object.

First claim

What is claimed is:

1. An apparatus for controlling an airbag module in a vehicle cabin, the apparatus comprising:
a control apparatus connected to a trigger of the airbag module;
a plenoptic camera of a camera module, which generates image data having depth information within a prespecifiable region in the vehicle cabin with the prespecifiable region comprising at least a first partial region, a second partial region, and a third partial region of a trigger region of the airbag module; and
an evaluation device processing the image data to determine whether an object is located in the first partial region, the second partial region, or the third partial region,
wherein the control apparatus controls the airbag module such that
if the evaluation device determines the object is in the second partial region at the time of impact, the control apparatus partially deploys the airbag module,
if the evaluation device determines the object is in the third partial region at the time of impact, the control apparatus does not trigger the airbag module,
wherein the evaluation device calculates if the object will be located in the first partial region, the second partial region, or the third partial region at a later time after the time of impact, such that
if the object is located in the first partial region at the time of impact, and the evaluation device calculates that, at the later time after impact, the object will be in the second partial region, then the airbag module is partially deployed by the control apparatus.

2. The apparatus as claimed in claim 1 , wherein the camera module comprises:
an objective that images objects in the prespecifiable region in an image plane of the camera module;
a sensor generating image data; and
a microlens array arranged between the sensor and the objective, wherein each microlens of the microlens array images the objects, which are imaged by the objective on the sensor.

3. The apparatus as claimed in claim 2 , wherein the microlens array is arranged in the image plane.

4. The apparatus as claimed in claim 2 , wherein the microlens array is arranged between the image plane and the sensor.

5. The apparatus as claimed in claim 2 , wherein a further lens is provided, which is arranged between the sensor and the microlens array, and the further lens images the objects, which are imaged in an intermediate image plane by each individual microlens of the microlens array on the sensor.

6. The apparatus as claimed in claim 1 , wherein the evaluation device is configured such that it detects whether a child seat including a child sitting on it is arranged in the prespecifiable region and wherein the control apparatus in this case does not trigger or only partially triggers the airbag module.

7. The apparatus as claimed in claim 1 , wherein the trigger region is located within the prespecifiable region.

8. The apparatus as claimed in claim 2 , wherein the sensor is configured as an infrared sensor or an LWIR sensor in a wavelength range of from 8 to 15 μm.

9. The apparatus as claimed in claim 1 , wherein the airbag module is triggered if the object will be located in the first partial region at said later time, the airbag module is partially triggered if the object will be located in the second partial region at said later time, and the airbag module is not triggered if the object will be located in the third partial region at said later time.

10. An airbag deployment control apparatus of a vehicle, comprising:
a single plenoptic camera capturing image data having depth information within a prespecifiable region of a vehicle cabin with the prespecifiable region comprising at least a first partial region, a second partial region, and a third partial region;
an airbag module including a trigger for deploying an airbag;
a control apparatus;
an evaluation device processing the image data to determine whether an occupant of the vehicle is located in the first partial region, the second partial region, or the third partial region at a time of impact,
wherein the control apparatus controls the airbag module such that
if the occupant is in the first partial region at the time of impact, the airbag module is triggered,
if the occupant is in the third partial region at the time of impact, the airbag module is not triggered,
wherein the evaluation device calculates if a head of the occupant will be located in the first partial region, the second partial region or the third partial region at a later time after the time of impact, and
wherein if the head of the occupant is in the second partial region, and the evaluation device calculates that the head of the occupant will be in the third partial region at the later time after the time of impact, then the airbag is not triggered.

11. The airbag deployment control apparatus of a vehicle of claim 10 , wherein the impact is detected by a crash sensor.

12. The airbag deployment control apparatus of a vehicle of claim 10 , wherein the airbag is partially triggered in the event, if the head of the occupant is in the second partial region or the occupant is a child, and if the head of the occupant will not be in the third partial region at the later time after impact.

13. The airbag deployment control apparatus of a vehicle of claim 10 , wherein the first partial region, second partial region, and third partial region each change depending on the seat position.

14. The apparatus as claimed in claim 1 , wherein the object is a vehicle occupant, a child, or a child seat.

15. The apparatus as claimed in claim 1 , wherein if at the time of impact a first portion of the object is in the third partial region and a second portion of the object is in the second partial region or first partial region, the airbag module is not deployed.

16. The apparatus as claimed in claim 1 , wherein if the object will be in the first partial region at the later time after impact, the airbag module is deployed.

17. The apparatus as claimed in claim 1 , wherein if the object will be in the third partial region at the later time after impact, the airbag module is not deployed.

Assignees

• Jenoptik Optical Sys Gmbh

Inventors

• Himel Marc

Classifications

• B60R21/01512

  Passenger detection systems · CPC title

• B60R21/01538 Primary

  for image processing, e.g. cameras or sensor arrays · CPC title

• B60R21/015

  including means for detecting the presence or position of passengers, passenger seats or child seats {, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use} · CPC title

• B60R21/01

  Electrical circuits for triggering {passive} safety arrangements, {e.g. airbags, safety belt tighteners,} in case of vehicle accidents or impending vehicle accidents {(electrical circuits for transmission of signals between steering wheel and the vehicle itself B60R16/027; for electrically actuating belt retractor locking means B60R22/343)} · CPC title