Denso Corporation

Yutaka Uono

Yukiyasu Ueno

Yoshiteru Inoue

Makoto Aso

A first control signal generating unit and a second control signal generating unit output a first control signal and a second control signal when magnitude of an impact corresponding to first and second sensor signals are greater than a first and second threshold. A third control signal generating unit outputs a third control signal when detecting disruption of the second sensor signal. An activating signal generating unit activates a protecting device when the first control signal is output, and when one of the second control signal and the third control signal is output. A fourth control signal generating unit outputs a fourth control signal when detecting an abnormality other than disruption of the second sensor signal. The third control signal generating unit restricts outputting the third control signal when the fourth control signal is output.

Passenger protecting apparatus and method for protecting passenger

An airbag device includes a squib, an ignition circuit, and a noise protection circuit. The noise protection circuit includes two zener diodes whose cathodes are facing each other and connected with each other. Further, the noise protection circuit is connected in parallel with the ignition element to thereby protect the ignition circuit from noise. This decreases the number of components in the noise protection circuit to thereby achieve the compact and low-cost airbag device.

Growing community of inventors

Kuwana, Japan

Yutaka Uono