Abstract: An acceleration sensor unit including a board on which an acceleration sensor is mounted, a support part for supporting the board, and a housing in which the support part and the acceleration sensor are contained, the board is installed in the housing by means of the support part so as to swing with respect to the housing.

Abstract: An acceleration sensor unit including a board on which an acceleration sensor is mounted, a support part for supporting the board, and a housing in which the support part and the acceleration sensor are contained, the board is installed in the housing by means of the support part so as to swing with respect to the housing.

Abstract: In a corrective device for an output of an acceleration sensor control means includes operation processing means for inputting a self-diagnosis check signal to the acceleration sensor 1, and for executing an offset corrective operation processing of the output of the acceleration sensor prior to inputting the self-diagnosis check signal to the acceleration sensor.

Abstract: In a corrective device for an output of an acceleration sensor control means includes operation processing means for inputting a self-diagnosis check signal to the acceleration sensor 1, and for executing an offset corrective operation processing of the output of the acceleration sensor prior to inputting the self-diagnosis check signal to the acceleration sensor.

Abstract: An automatic door lock releasing apparatus according to the present invention comprises decelerating direction integrating means for integrating a decelerating direction component of each of the acceleration signals obtained from acceleration sensors in a vehicle; accelerating direction integrating means for integrating an accelerating direction component; coefficient means for weighting an output of the accelerating direction integrating means with a specified coefficient; subtracting means for subtracting an output of the coefficient means from an output of the decelerating direction integrating means; an arithmetic processing unit for determining a resultant velocity of velocity signals; and a comparison processing unit for comparing the resultant velocity with a threshold value and generating a start signal.

Abstract: An automatic door lock releasing apparatus according to the present invention comprises decelerating direction integrating means for integrating a decelerating direction component of each of the acceleration signals obtained from acceleration sensors in a vehicle; accelerating direction integrating means for integrating an accelerating direction component; coefficient means for weighting an output of the accelerating direction integrating means with a specified coefficient; subtracting means for subtracting an output of the coefficient means from an output of the decelerating direction integrating means; an arithmetic processing unit for determining a resultant velocity of velocity signals; and a comparison processing unit for comparing the resultant velocity with a threshold value and generating a start signal.

Abstract: A device for starting an occupant crash protector can output, as a start signal, a logical product of an output of a collision determining mechanism and an output of a non-collision determining mechanism. The collision determining mechanism detects a collision including an impact that does not require a start-up. The non-collision determining mechanism detects only a collision that requires a start-up using a value obtained by subtracting a value varied with time from the output of an acceleration sensor and integrating the result of the subtraction.

Abstract: A device of detecting collision of a vehicle for determining collision of a vehicle based on an acceleration from an acceleration detecting means for detecting a collision acceleration of the vehicle, the device including a collision force calculating means for calculating an estimated collision force caused in the vehicle in the collision based on the collision acceleration and a collision determining means for determining the collision based on the estimated collision force.

Abstract: A starting device integrates an output signal of an acceleration sensor by a band-pass integrating means while restricting an upper limit of the output signal in a specified frequency range by an upper limit restricting means, and is provided with a comparing means for outputting a starting signal when the integrated value is larger than a predetermined threshold value. In this way, the starting device is certainly started by an acceleration waveform of collision that must start the device. Further, the device is not influenced by vibration components caused immediately after the beginning of collision with respect to a low-speed collision such as 8 mile/hour frontal collision that must not start the device.

Abstract: A starting apparatus of a passenger protecting apparatus is actuated by detecting collision of a vehicle. The starting apparatus is provided so as to subtract a predetermined value from an acceleration signal fed from G sensor and integrate the subtracted acceleration signal, and forcedly set an integrated value to zero if the integrated value is less than zero. Further, the starting apparatus is provided so as to provide a starting signal when the integrated value exceeds a preset threshold value. Therefore, it is possible to discriminate collision to start the apparatus from other collision, prevent starting means from being unnecessarily actuated, and avoid malfunction of the starting means.

Abstract: A starting apparatus for a passenger protecting apparatus includes a collision deciding unit, a control unit, and a trigger. The collision deciding unit makes a collision decision depending upon output of an acceleration sensor which detects acceleration at a time of collision. The control unit controls generation of a starting signal based upon a difference between output of a decelerating direction integrating unit, which integrates the acceleration signal of the acceleration sensor in the decelerating direction, and output of accelerating direction integrating unit, which integrates the acceleration signal of the acceleration sensor in an acceleration direction. The trigger outputs the starting signal based on output of the collision deciding unit and output of the control unit.

Abstract: Disclosed herein is a start control device for starting a vehicle passenger protecting device such as an air bag, which does not respond to an impact against which the vehicle passenger protecting device must not be started, but quickly responds to a collision against which the vehicle passenger protecting device must be started. The start control device includes a start level generator for setting a decision level of start signal generation to a higher level for a predetermined time from a rise timing of an acceleration signal obtained from an acceleration sensor in deciding a collision by using an integral value of the acceleration signal. With this arrangement, in case of the impact against which the vehicle passenger protecting device must not be started, the start signal can be prevented from being generated.

Abstract: A starting apparatus of a passenger protecting apparatus is actuated by detecting collision of a vehicle. The starting apparatus is provided so as to subtract a predetermined value from an acceleration signal fed from G sensor and integrate the subtracted acceleration signal, and forcedly set an integrated value to zero if the integrated value is less than zero. Further, the starting apparatus is provided so as to provide a starting signal when the integrated value exceeds a preset threshold value. Therefore, it is possible to discriminate collision to start the apparatus from other collision, prevent starting means from being unnecessarily actuated, and avoid malfunction of the starting means.