Denso Corporation

Nagoya University

Kazuhisa Hashimoto

Asei Wakabayashi

Shingo Wanami

Takatoshi Tanabe

Koji Mizuno

Daisuke Ito

Takeshi Horiguchi

A vehicle collision sensor includes a piezoelectric polymer film that includes a piezoelectric element deformed to generate an output voltage, and a pair of electrodes clamping the piezoelectric element from both its surfaces, at least one of the electrodes including divided pieces away from each other in a state where the at least one of the electrodes is joined to the piezoelectric element, and a conductive component that is clamped between the film and a bumper cover, which is provided on a front portion of a vehicle, or that is clamped between a fastening component, which attaches the film to the bumper cover, and the film, in a state where the film is attached to an inner surface of the bumper cover, so that the conductive component connects together the divided pieces from a side of the divided pieces, which is not joined to the piezoelectric element.

Vehicle collision sensor and vehicle collision detection device using same

A second-time collision position estimator section estimates a second-time collision position that is a position at which an occupant on a two-wheel mobile object has a second-time collision, based on a relative vector estimated by a relative vector estimator section and a first-time collision position identified by a first-time collision position identifier section. An operation instructor section operates an external protection device, which is determined to be able to protect the occupant on the two-wheel mobile object based on the second-time collision position estimated by the second-time collision position estimator section.

Protection control apparatus

A passenger-protecting system includes a pressure sensor for detecting a pressure in an inner space of a door and a side airbag installed in the door. The pressure in the inner space increases when a side collision occurs. When the pressure in the inner space of the door exceeds a predetermined threshold level, the side airbag is inflated to protect a passenger from a side collision. There are certain situations where the operation of the side airbag is not necessary even if the pressure in the inner space of the door exceeds the threshold level. Such situations include: when the door is abruptly closed and a front airbag is inflated to protect a passenger from a frontal collision. According to the present invention, unnecessary operations of the side airbag are effectively avoided.

Passenger-protecting system for automotive vehicle

Growing community of inventors

Kariya, Japan

Kazuhisa Hashimoto