Electric control circuit for passenger protection system in automotive vehicles
AssigneeNippondenso Co., Ltd.
InventorAkira Kondo
Life of this patent
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Abstract
An electric control circuit for a passenger protection system in an automotive vehicle includes an electric power source, an acceleration sensor arranged to produce an acceleration signal therefrom in the occurrence of a vehicle collision and an electrically operated actuator including a primer having a first terminal in series with the power source and a second terminal in series with the acceleration sensor to be grounded therethrough in response to the acceleration signal from the sensor, wherein the second terminal of the primer is directly grounded when a voltage appearing at a conductor between the second terminal of the primer and the acceleration sensor becomes lower than a predetermined value to ensure activation of the primer.
Claims12
An electric control circuit for a passenger protection system in an automotive vehicle, comprising:
- an electric power source;
- a primary acceleration sensor arranged to produce a first acceleration signal at an occurrence of a first acceleration;
- a primer having a first terminal in series with said power source and a second terminal grounded through said primary acceleration sensor;
- and
- means for electrically actuating the primer in response to the first acceleration signal from the primary acceleration sensor, comprising:
- first means for detecting the first acceleration signal at a conductor between the primary acceleration sensor and the second terminal of the primer and for producing a first electric signal when the detected voltage becomes lower than a first predetermined value;
- and
- second means for grounding the second terminal of the primer in response to the first electric signal from the first means.
Dependencies are inferred from the claim text.