Noise-resistant circuit and apparatus using same
First Claim
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1. A noise-resistant circuit for squibbing a squib mounted on an object to be moved,said circuit comprising:
- a sensor sensing a physical quantity applied to the circuit to generate a signal corresponding to the applied physical quantity;
a controller configured to issue a command for squibbing the squib based on the signal;
a plurality of independent channels connecting the controller and a plurality of drivers to transmit the command from the controller to the plurality of drivers, the plurality of independent channels comprising a first channel and a second channel, the first channel being connected to a higher voltage electric power line of the squib and the second channel being connected to a lower voltage electric power line of the squib; and
a plurality of switching elements, mutually connected in series and driven, by the plurality of drivers respectively, to squib the squib.
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Abstract
An airbag apparatus for safety includes an airbag inflating in response to a signal, and a sensor sensing a movement and generating the signal in response to the movement. A controller is configured to issue a command for squibbing a squib based on the signal. The airbag apparatus also includes a plurality of drivers operating in response to the command and a plurality of independent channels connecting the controller and the drivers to transmit the command from the controller to the drivers and a plurality of switching elements to squib the squib for inflating the airbag, for example, in a vehicle.
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Citations
5 Claims
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1. A noise-resistant circuit for squibbing a squib mounted on an object to be moved,
said circuit comprising: -
a sensor sensing a physical quantity applied to the circuit to generate a signal corresponding to the applied physical quantity; a controller configured to issue a command for squibbing the squib based on the signal; a plurality of independent channels connecting the controller and a plurality of drivers to transmit the command from the controller to the plurality of drivers, the plurality of independent channels comprising a first channel and a second channel, the first channel being connected to a higher voltage electric power line of the squib and the second channel being connected to a lower voltage electric power line of the squib; and a plurality of switching elements, mutually connected in series and driven, by the plurality of drivers respectively, to squib the squib. - View Dependent Claims (2)
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3. An airbag apparatus for safety comprising:
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an airbag inflating in response to a signal; a sensor sensing a movement and generating the signal in response to the movement; a controller configured to issue a command for squibbing the squib based on the signal; a plurality of drivers operating in response to the command; a plurality of independent channels connecting the controller and a plurality of drivers to transmit the command from the controller to the plurality of drivers, the plurality of the independent channels comprising a first channel and a second channel, the first channels being connected to a higher voltage electric power line of the squib and the second channel being connected to a lower voltage electric power line of the squib; and a plurality of switching elements, mutually connected in series and driven by the plurality of drivers respectively, to squib the squib. - View Dependent Claims (4, 5)
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Specification