Circuit device for a vehicle, and method for operating a circuit device

Patent metadata

Field	Value
Publication number	US-12504457-B2
Application number	US-201917312804-A
Country	US
Kind code	B2
Filing date	Dec 11, 2019
Priority date	Dec 19, 2018
Publication date	Dec 23, 2025
Grant date	Dec 23, 2025

Abstract

A circuit device for a vehicle, including: a printed circuit board having an operating circuit for operating a unit, a first conductor track for connecting the operating circuit to the unit, and a second conductor track for connecting the operating circuit to the unit; a detection electrode for detecting a leakage current affecting at least one of the conductor tracks; and a detection arrangement to use a signal applied to the detection electrode to provide a detection signal representing the leakage current. Also described are a related method.

First claim

The invention claimed is:

1 . A circuit device for a vehicle, comprising:
a printed circuit board having an operating circuit for operating a unit, a first conductor track for connecting the operating circuit to the unit, and a second conductor track for connecting the operating circuit to the unit; a detection electrode for detecting a leakage current affecting at least one of the conductor tracks; and a detection arrangement to use a signal applied to the detection electrode to provide a detection signal representing the leakage current; wherein the detection arrangement is configured to use the detection signal to provide a correction signal for correcting a signal transmitted via the first conductor track and/or the second conductor track and distorted by the leakage current, wherein the first conductor track is coupled between the first terminal of the operating circuit and the first contact of the connector, and is further coupled between the first contact of the connector and the first terminal of the unit, wherein the second conductor track is coupled between the second terminal of the operating circuit and the second contact of the connector, and is further coupled between the second contact of the connector and the second terminal of the unit, wherein the first conductor track and the second conductor track are arranged in parallel between the operating circuit and the unit, wherein the vehicle has a system, which is a braking system, and wherein the circuit device is part of the system and is installed in the vehicle.

2 . The circuit device of claim 1 , wherein the detection electrode is arranged to detect the leakage current between the first conductor track and the second conductor track and/or the leakage current between one of the conductor tracks and a further electrical line or electrical potential surface of the printed circuit board.

3 . The circuit device of claim 1 , wherein the operating circuit is configured to operate a unit, which includes a sensor.

4 . The circuit device of claim 1 , wherein the operating circuit is configured to read-in, via at least one of the conductor tracks, a data signal provided by the unit.

5 . The circuit device of claim 1 , wherein the operating circuit is configured to read-in, via at least one of the conductor tracks, an error signal from the unit.

6 . A circuit device for a vehicle, comprising:
a printed circuit board having an operating circuit for operating a unit, a first conductor track for connecting the operating circuit to the unit, and a second conductor track for connecting the operating circuit to the unit; a detection electrode for detecting a leakage current affecting at least one of the conductor tracks; and a detection arrangement to use a signal applied to the detection electrode to provide a detection signal representing the leakage current; wherein the operating circuit includes an oscillator circuit to operate the unit, which includes the coil, wherein the first conductor track is coupled between the first terminal of the operating circuit and the first contact of the connector, and is further coupled between the first contact of the connector and the first terminal of the unit, wherein the second conductor track is coupled between the second terminal of the operating circuit and the second contact of the connector, and is further coupled between the second contact of the connector and the second terminal of the unit, wherein the first conductor track and the second conductor track are arranged in parallel between the operating circuit and the unit, wherein the vehicle has a system, which is a braking system, and wherein the circuit device is part of the system and is installed in the vehicle.

7 . A circuit device for a vehicle, comprising:
a printed circuit board having an operating circuit for operating a unit, a first conductor track for connecting the operating circuit to the unit, and a second conductor track for connecting the operating circuit to the unit; a detection electrode for detecting a leakage current affecting at least one of the conductor tracks; a detection arrangement to use a signal applied to the detection electrode to provide a detection signal representing the leakage current; and a connector for connecting the unit to the printed circuit board; wherein the connector has a first contact for contacting a first terminal of the unit, a second contact for contacting a second terminal of the unit, and a third contact arranged between the first contact and the second contact, wherein the first contact is connected to the first conductor track, the second contact is connected to the second conductor track, and the third contact is connected to the detection electrode or is the detection electrode, wherein the first conductor track is coupled between the first terminal of the operating circuit and the first contact of the connector, and is further coupled between the first contact of the connector and the first terminal of the unit, wherein the second conductor track is coupled between the second terminal of the operating circuit and the second contact of the connector, and is further coupled between the second contact of the connector and the second terminal of the unit, wherein the first conductor track and the second conductor track are arranged in parallel between the operating circuit and the unit, wherein the vehicle has a system, which is a braking system, and wherein the circuit device is part of the system and is installed in the vehicle, wherein the circuit device is installed in the vehicle.

8 . A circuit device for a vehicle, comprising:
a printed circuit board having an operating circuit for operating a unit, a first conductor track for connecting the operating circuit to the unit, and a second conductor track for connecting the operating circuit to the unit; a detection electrode for detecting a leakage current affecting at least one of the conductor tracks; and a detection arrangement to use a signal applied to the detection electrode to provide a detection signal representing the leakage current; wherein the detection arrangement is configured to use the detection signal to provide a correction signal for correcting a signal transmitted via the first conductor track and/or the second conductor track, a switch-off signal for switching off the unit, a change-over signal for changing over the system having the circuit device to a safe state, or a warning signal, wherein the first conductor track is coupled between the first terminal of the operating circuit and the first contact of the connector, and is further coupled between the first contact of the connector and the first terminal of the unit, wherein the second conductor track is coupled between the second terminal of the operating circuit and the second contact of the connector, and is further coupled between the second contact of the connector and the second terminal of the unit, wherein the first conductor track and the second conductor track are arranged in parallel between the operating circuit and the unit, wherein the vehicle has a system, which is a braking system, and wherein the circuit device is part of the system and is installed in the vehicle.

9 . A circuit device for a vehicle, comprising:
a printed circuit board having an operating circuit for operating a unit, a first conductor track for connecting the operating circuit to the unit, and a second conductor track for connecting the operating circuit to the unit; a detection electrode for detecting a leakage current affecting at least one of the conductor tracks; and a detection arrangement to use a signal applied to the detection electrode to provide a

Assignees

• Knorr Bremse Systeme Fuer Nutzfahrzeuge Gmbh

Inventors

• Prams Stefan

Classifications

• H05K2201/10151

  Sensor · CPC title

• H05K1/18

  structurally associated with non-printed electric components (H05K1/16 takes precedence) · CPC title

• G01R31/52 Primary

  Testing for short-circuits, leakage current or ground faults · CPC title

• G01R31/006 Primary

  on road vehicles, e.g. automobiles or trucks (testing of ignition installations peculiar to internal combustion engines F02P17/00) · CPC title