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An airbag control arrangement

A technology of airbags and control devices, applied in pedestrian/occupant safety arrangements, vehicle safety arrangements, transportation and packaging, etc., can solve problems such as exhausted batteries

Active Publication Date: 2013-10-02
维宁尔瑞典安全系统公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the control unsuitable for use in vehicles where the horn circuit is continuously connected to the vehicle's battery rather than via the vehicle's ignition, as the control would drain the battery when the vehicle is not in use

Method used

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Examples

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Embodiment Construction

[0027] figure 1 A driver's airbag unit 1 is shown in schematic form, which includes an airbag control circuit and is mounted to a steering wheel 2 of a motor vehicle. The steering wheel 2 is mounted to a steering column (not shown) of the vehicle for rotation in a conventional manner. The function switch 3 is mounted on the steering wheel 2 and forms part of an auxiliary function circuit 4 .

[0028] The auxiliary function switch 4 can take a variety of forms. For example, the auxiliary function circuit may form part of a vehicle entertainment system, in which case the function switch 3 may take the form of a volume control button or a radio tuning button or the like. Alternatively, the auxiliary function circuit 4 may form part of the vehicle's cruise control system, in which case the function switch 3 may take the form of a cruise control activation button, a speed control button or the like. However, in a preferred embodiment of the present invention, the auxiliary funct...

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PUM

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Abstract

There is disclosed an airbag control arrangement for a steering-wheel mounted airbag in a motor vehicle having a steering-wheel mounted function switch, such as horn-switch. The arrangement comprises an airbag control circuit mounted to the steering wheel and including a first acceleration sensor, a second acceleration sensor, and a controller. The airbag control circuit is electrically connected to an auxiliary function circuit (e.g. a horn circuit) incorporating said function switch so as to derive operative electric power from the auxiliary function circuit. The controller is configured to output an actuating signal only in response to the receipt of signals from both acceleration sensors. The airbag control circuit is configured to switch from a sleep mode to an operative mode in dependence on an output signal from the first acceleration sensor; the second acceleration sensor being off and the controller drawing a low sleep-current current in said sleep mode, but both being energised and operable in said operative mode.

Description

technical field [0001] The invention relates to an airbag control device for a motor vehicle. More particularly, the present invention relates to an airbag control device dedicated to a steering wheel-mounted airbag in a motor vehicle having a steering wheel-mounted function switch, such as a horn switch. Background technique [0002] It is currently known to provide inflatable airbags in the passenger compartment of a motor vehicle, the airbag being arranged to inflate rapidly in the event of a crash to provide protection to the driver and / or passengers of the motor vehicle. A typical airbag used to protect motor vehicle drivers includes a steering wheel mounted airbag having a tightly packed airbag and an inflator for rapidly distributing inflation gas within the airbag. The airbag module is also associated with a control circuit configured to sense a crash and send an appropriate actuation signal to actuate the inflator and thus inflate the airbag in the event of a crash...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/203B60R21/0132
CPCB60R21/0132B60R21/017B60R21/2035B60R2021/01322
Inventor A·富耶尔J·菲茨帕特里克
Owner 维宁尔瑞典安全系统公司
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