Device and method for detecting collision of vehicle
AssigneeDenso Corporation
InventorSeiya Ide
Life of this patent
Estimating the term…
Abstract
A method for detecting a collision of a vehicle based on an output value of a pressure sensor for detecting change of a pressure in an interior space of the vehicle, includes: a process for calculating an environmental pressure around the vehicle; a process for correcting a pressure value determined based on the output value of the pressure sensor in accordance with the calculated environmental pressure; and a process for determining whether the corrected pressure value exceeds a predetermined threshold.
Claims19
A method for detecting a collision of a vehicle based on an output value of a pressure sensor for detecting a change of a pressure in an interior space of the vehicle, the method comprising:
- calculating an environmental pressure around the vehicle based on a detection of the pressure sensor;
- correcting, based on the calculated environmental pressure, a pressure value determined based on the output value of the pressure sensor;
- determining whether the corrected pressure value exceeds a predetermined threshold;
- and
- comparing the determined pressure value with an upper limit value which is different than the predetermined threshold and which is determined based on the calculated environmental pressure;
- wherein the determined pressure value is corrected in the correcting step when the determined pressure value of the pressure sensor is smaller than the upper limit value.
A device for detecting a collision of a vehicle, the device comprising:
- a pressure sensor for detecting a change of a pressure in an interior space of the vehicle;
- and
- a control circuit which includes:
- a calculating section which calculates an environmental pressure around the vehicle;
- a correcting section which corrects, based on the calculated environmental pressure, a pressure value determined based on an output value of the pressure sensor;
- and
- a determination section which determines whether the corrected pressure value exceeds a predetermined threshold;
- wherein
- the control unit further comprises a comparing section for comparing the determined pressure value with an upper limit value which is different than the predetermined threshold and which is determined based on the calculated environmental pressure;
- and
- the determined pressure value is corrected by the correcting section when the determined pressure value of the pressure sensor is smaller than the upper limit value.
A method for detecting a collision of a vehicle based on an output value of a pressure sensor for detecting a change of a pressure in an interior space of the vehicle, the method comprising:
- calculating an environmental pressure around the vehicle based on a detection of the pressure sensor;
- multiplying a pressure value determined based on the output value of the pressure sensor by a gain value, the gain value being based on the calculated environmental pressure;
- determining whether the corrected pressure value exceeds a predetermined threshold;
- and comparing the determined pressure value with an upper limit value which is different than the predetermined threshold and which is determined based on the calculated environmental pressure;
- wherein the determined pressure value is corrected in the correcting step when the determined pressure value of the pressure sensor is smaller than the upper limit value.
Dependencies are inferred from the claim text.