Diagnosis of a person protection system
First Claim
1. A device for controlling a person protection system of a motor vehicle, comprising:
- a sensor system that detects an object colliding with the motor vehicle, the sensor system comprising;
a hose arrangeable along a width of a body section of the motor vehicle;
a pressure sensor operatively arranged to close-off at least one end of the hose, wherein a pressure change is caused in an interior of the hose due to deformation of the hose by an impact of the object with the motor vehicle, the pressure change being detectable and processable as a pressure signal of the pressure sensor;
an evaluating unit operatively coupled with the pressure sensor and receiving the pressure signal;
wherein the evaluating unit is operatively configured to detect vibrations originating from the motor vehicle and coupled into the hose during a driving operation, said vibrations resulting in pressure fluctuations in the interior of the hose that are lower than a pressure fluctuation caused by an impacting object; and
wherein the evaluating unit is operatively configured to evaluate the vibrations for a predefined time period in order to diagnose damage to at least one of the hose and to a connection of the hose to the pressure sensor.
1 Assignment
0 Petitions
Accused Products
Abstract
A device controls a person protection system of a motor vehicle having a sensor system which, for detecting an object colliding with the motor vehicle, includes a hose arranged along a body section width of the vehicle and closed-off by a pressure sensor on at least one end. In the event of an impact with an object, a pressure change is caused in the hose interior due to deformation of the hose and is detectable as a pressure signal of the pressure sensor by an evaluating unit connected with the pressure sensor. The evaluating unit detects vibrations originating from the motor vehicle during a driving and testing operation and coupled into the hose, which vibrations result in pressure fluctuations in the hose interior which are lower than a pressure fluctuation caused by an impacting object, and evaluates these vibrations for a predefined time period for diagnostic purposes.
11 Citations
20 Claims
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1. A device for controlling a person protection system of a motor vehicle, comprising:
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a sensor system that detects an object colliding with the motor vehicle, the sensor system comprising; a hose arrangeable along a width of a body section of the motor vehicle; a pressure sensor operatively arranged to close-off at least one end of the hose, wherein a pressure change is caused in an interior of the hose due to deformation of the hose by an impact of the object with the motor vehicle, the pressure change being detectable and processable as a pressure signal of the pressure sensor; an evaluating unit operatively coupled with the pressure sensor and receiving the pressure signal; wherein the evaluating unit is operatively configured to detect vibrations originating from the motor vehicle and coupled into the hose during a driving operation, said vibrations resulting in pressure fluctuations in the interior of the hose that are lower than a pressure fluctuation caused by an impacting object; and wherein the evaluating unit is operatively configured to evaluate the vibrations for a predefined time period in order to diagnose damage to at least one of the hose and to a connection of the hose to the pressure sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A process for controlling a person protection system of a motor vehicle equipped with a sensor system having a hose arranged along a width of a body section of the motor vehicle and being closed-off via a pressure sensor on at least one end, wherein in an event of an impact of an object with the motor vehicle, a pressure change is caused in an interior of the hose due to deformation of the hose, the pressure change being indicated via a pressure signal of the pressure sensor, the process comprising the acts of:
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detecting vibrations, with an evaluating unit operatively arranged in the motor vehicle to receive the pressure signal, said vibrations originating from the motor vehicle during a driving operation and being coupled into the hose in order to produce pressure fluctuations in an interior of the hose that are less than a pressure fluctuation caused by an impacting object; and evaluating, by the evaluating unit, the detected vibrations originating from the motor vehicle for a predefined time period in order to diagnose damage to at least one of the hose and to a connection of the hose to the pressure sensor. - View Dependent Claims (20)
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Specification