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AssigneesAutoliv Development AB, Bayerische Motoren Werke Aktiengesellschaft
InventorsNorbert Kollmer, Richard Baur, Herbert Hoefelsauer
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The present invention relates to a vehicle impact sensor device adapted to detect an impact between a vehicle (1) and a person. The sensor device (6) comprises a tubular enclosure (7) which encloses a gas-filled space (8). The tubular enclosure (7) has a first end (7a) and a second end (7b) and is arranged to extend along a bumper cover (5), when mounted to a vehicle (1). The sensor device (6) further comprises a pressure sensor (9, 9′, 11, 11′) arranged to detect pressure characteristics in the the tubular enclosure (7). The sensor device (6) also comprises a gas pulse device (11, 11′) which is connected to the tubular enclosure (7), the gas pulse device (11, 11′) being arranged to insert gas into, or withdraw gas from, the tubular enclosure (7).
A vehicle impact sensor device adapted to detect an impact between a vehicle and a person, wherein the sensor device comprises a tubular enclosure which encloses a gas-filled space, the tubular enclosure having a first end and a second end and being arranged to extend along a bumper cover, mainly across a vehicle forward direction of movement, when mounted to a vehicle, the sensor device further comprising a pressure sensor arranged to detect pressure characteristics in the tubular enclosure, wherein the sensor device also comprises a gas pulse device which is connected to the tubular enclosure, the gas pulse device being arranged to insert gas into, or withdraw gas from, the tubular enclosure, wherein the gas pulse device comprises a piston which has a longitudinal extension and is drivable from a rest position in a direction along its longitudinal extension such that a gas pulse is created, and wherein the gas pulse device comprises an electromagnetic device which is arranged to drive the piston.
A gas pulse device arranged to insert gas into, or withdraw gas from, a tubular enclosure, wherein the tubular enclosure encloses a gas-filled space, has a first end and a second end and is arranged to extend along a bumper cover, mainly across a vehicle forward direction of movement (D), when mounted to a vehicle, a pressure sensor arranged to detect pressure characteristics in the the tubular enclosure being mounted to the tubular enclosure, and wherein the gas pulse device and the tubular enclosure are comprised in a vehicle impact sensor device adapted to detect an impact between a vehicle and a person, wherein the gas pulse device comprises a piston which has a longitudinal extension and is drivable from a rest position in a direction along its longitudinal extension such that a gas pulse is created, and wherein the gas pulse device comprises an electromagnetic device which is arranged to drive the piston.
Dependencies are inferred from the claim text.