Method and device for operating a safety system of a motor vehicle, and safety system for a motor vehicle

Patent metadata

Field	Value
Publication number	US-11780393-B2
Application number	US-201716343259-A
Country	US
Kind code	B2
Filing date	Oct 17, 2017
Priority date	Oct 31, 2016
Publication date	Oct 10, 2023
Grant date	Oct 10, 2023

Abstract

A method for operating a safety system of a motor vehicle includes correcting an output signal of a measuring sensor as a function of a current temperature value measured by a temperature sensor. The motor vehicle includes a sensor device with the measuring sensor to detect a collision and the temperature sensor. The method further includes determining an intrinsic heat of the measuring sensor generated by the operation of the measuring sensor and correcting the output signal as a function of the determined intrinsic heat.

First claim

The invention claimed is:

1. A method for operating a safety system of a motor vehicle, comprising:
detecting a measured temperature in a vicinity of a measuring sensor of the safety system using a temperature sensor of the sensor device, the measuring sensor being configured to generate an output signal indicative of whether the motor vehicle is in a collision;
determining an intrinsic heat of the measuring sensor generated by operation of the measuring sensor using the control device of the safety system;
correcting the measured temperature as a function of the determined intrinsic heat using the control device; and
adjusting the output signal of the measuring sensor based on the corrected measured temperature.

2. The method as claimed in claim 1 , further comprising:
determining the intrinsic heat as a function of an electrical operating voltage of the measuring sensor.

3. The method as claimed in claim 1 , further comprising:
determining the intrinsic heat as a function of an electrical operating current of the measuring sensor.

4. The method as claimed in claim 1 , further comprising:
determining the intrinsic heat as a function of a communication system and/or protocol by which the measuring sensor is operated.

5. The method as claimed in claim 1 , further comprising:
determining the intrinsic heat as a function of a housing of the respective measuring sensor.

6. The method as claimed in claim 1 , further comprising:
determining the intrinsic heat as a function of a sensor type of the measuring sensor.

7. The method as claimed in claim 1 , further comprising:
transmitting the corrected output signal and/or the current temperature value and the determined intrinsic heat to the control device of the safety system.

8. The method as claimed in claim 1 , wherein a computer program, under normal conditions of use, is configured to carry out all steps of the method.

9. The method as claimed in claim 8 , wherein a machine-readable storage medium stores the computer program.

10. A control device, for operating a safety system of a motor vehicle, comprising:
a sensor device with a measuring sensor configured to detect a collision of the motor vehicle; and
a temperature sensor,
wherein the control device is configured to:
detect a measured temperature in a vicinity of the measuring sensor using the temperature sensor, the measuring sensor being configured to generate an output signal indicative of whether the motor vehicle is in a collision;
determine, under normal conditions of use of the control device, an intrinsic heat of the measuring sensor generated by the operation of the measuring sensor;
correct the measured temperature as a function of the determined intrinsic heat; and
adjust the output signal of the measuring sensor based on the corrected measured temperature.

11. A safety system for a motor vehicle, comprising:
an activatable safety device; and
a sensor device including:
a measuring sensor configured to detect a collision of the motor vehicle; and
a temperature sensor,

wherein the activatable safety device is configured to:
detect a measured temperature in a vicinity of the measuring sensor using the temperature sensor, the measuring sensor being configured to generate an output signal indicative of whether the motor vehicle is in a collision;
determine, under normal conditions of use of the control device, an intrinsic heat of the measuring sensor generated by the operation of the measuring sensor;
correct the measured temperature as a function of the determined intrinsic heat; and
adjust the output signal of the measuring sensor based on the corrected measured temperature.

Assignees

• Bosch Gmbh Robert

Inventors

• Ewert Marlon Ramon
• Rozic Darko

Classifications

• B60R21/0132 Primary

  responsive to vehicle motion parameters {, e.g. to vehicle longitudinal or transversal deceleration or speed value} · CPC title

• B60R21/01 Primary

  Electrical circuits for triggering {passive} safety arrangements, {e.g. airbags, safety belt tighteners,} in case of vehicle accidents or impending vehicle accidents {(electrical circuits for transmission of signals between steering wheel and the vehicle itself B60R16/027; for electrically actuating belt retractor locking means B60R22/343)} · CPC title

• B60R2021/01013

  Means for detecting collision, impending collision or roll-over · CPC title

• B60R2021/01322

  comprising variable thresholds, e.g. depending from other collision parameters · CPC title