Method for monitoring the operational reliability of a braking system in a vehicle

Patent metadata

Field	Value
Publication number	US-2022017059-A1
Application number	US-202117237805-A
Country	US
Kind code	A1
Filing date	Apr 22, 2021
Priority date	Jul 20, 2020
Publication date	Jan 20, 2022
Grant date	—

Abstract

In a method for monitoring the operational reliability of a braking system in a vehicle. A brake pedal actuation is monitored via a brake light switch. An error signal is generated if the brake light switch generates a switch signal, without a braking intent of the driver being registered via a sensor signal of a sensor.

First claim

What is claimed is:

1 . A method for monitoring operational reliability of a braking system in a vehicle, the method comprising the following steps:
monitoring a brake pedal actuation via a brake light switch; and generating an error signal when the brake light switch generates a switch signal, without a braking intent of a driver being registered at the same time via a sensor signal of a sensor.

2 . The method as recited in claim 1 , wherein the sensor, whose signal is used to ascertain the braking intent of the driver, is a pedal travel sensor, the error signal being generated when the brake light switch generates a brake signal and the detected pedal travel is below a pedal travel limiting value at the same time.

3 . The method as recited in claim 1 , wherein the brake light switch and the sensor for registering the braking intent of the driver are situated at different positions in the braking system.

4 . The method as recited in claim 3 , wherein the brake light switch is situated at or adjacent to the brake pedal and the sensor for registering the braking intent of the driver is situated at or adjacent to an input rod of a main brake cylinder.

5 . The method as recited in claim 1 , wherein the braking system includes a connection of the brake pedal via movable rods.

6 . The method as recited in claim 5 , wherein the braking system includes at least one direction change of the brake pedal movement with the aid of the rods toward a main brake cylinder.

7 . The method as recited in claim 1 , wherein the braking system includes a hydraulic connection of the brake pedal.

8 . A control unit configured to monitor operational reliability of a braking system in a vehicle, the control unit configured to:
monitor a brake pedal actuation is monitored via a brake light switch; and generate an error signal when the brake light switch generates a switch signal, without a braking intent of a driver being registered at the same time via a sensor signal of a sensor; wherein the control unit is suppliable with sensor information of the brake light switch and of the sensor for registering the braking intent of the driver.

9 . A hydraulic braking system in a vehicle, comprising:
a brake light switch; a sensor whose signal is used to deduce a braking intent of a driver; and a control unit configured to monitor the operational reliability of a braking system in a vehicle, the control unit configured to:
monitor a brake pedal actuation via a brake light switch; and
generate an error signal when the brake light switch generates a switch signal, without a braking intent of the driver being registered at the same time via a sensor signal of the sensor;
wherein the control unit is suppliable with sensor information of the brake light switch and of the sensor for registering the braking intent of the driver.

10 . A vehicle including a hydraulic braking system, the hydraulic braking system including:
a brake light switch; a sensor whose signal is used to deduce a braking intent of a driver; and a control unit configured to monitor the operational reliability of a braking system in a vehicle, the control unit configured to:
monitor a brake pedal actuation via a brake light switch; and
generate an error signal when the brake light switch generates a switch signal, without a braking intent of the driver being registered at the same time via a sensor signal of the sensor;
wherein the control unit is suppliable with sensor information of the brake light switch and of the sensor for registering the braking intent of the driver.

11 . A non-transitory computer-readable storage medium on which is stored a computer program having program code for monitoring operational reliability of a braking system in a vehicle, the program code, when executed by a computer, causing the computer to perform the following steps:
monitoring a brake pedal actuation via a brake light switch; and generating an error signal when the brake light switch generates a switch signal, without a braking intent of a driver being registered at the same time via a sensor signal of a sensor.

Assignees

• Bosch Gmbh Robert

Inventors

• Kistner Matthias
• Wagner Jens
• Marquardt Oliver

Classifications

• B60T8/409

  characterised by details of the stroke simulating device · CPC title

• B60Q1/441 Primary

  Electric switches operable by the driver's pedals · CPC title

• B60T7/042 Primary

  by electrical means, e.g. using travel or force sensors · CPC title

• B60T7/06

  Disposition of pedal · CPC title

• B60T11/16

  Master control, e.g. master cylinders (master cylinders associated with vacuum boosters B60T13/565) · CPC title