Method for monitoring a transmission link

Patent metadata

Field	Value
Publication number	US-10113886-B2
Application number	US-201415023004-A
Country	US
Kind code	B2
Filing date	Sep 5, 2014
Priority date	Sep 20, 2013
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

A method for transmitting a measured value in a data transmission signal, the method including: introduction of the measured value into the data transmission signal; introduction of error information after said measured value into the data transmission signal, from which information it can be deduced whether the measured value contains an error; and introduction of evaluation information which describes the error information into the data transmission signal after the error information, if the measured value contains an error.

First claim

The invention claimed is:

1. A method for transmitting error information in a data transmission signal, comprising:
introducing, by a vehicle conditioning circuit, measured value pulses into the data transmission signal, the measured value pulses indicate a measured value detected by a sensor;
introducing, by the vehicle conditioning circuit, an, error indication pulse into the data transmission signal, the error indication pulse indicates that the measured value contains an error;
introducing, by the vehicle conditioning circuit, at least one evaluation information pulse into the data transmission signal, the at least one evaluation information pulse identifies the error in the measured value; and
in response to the error indication pulse indicating that the measured value contains an error, controlling, by the vehicle controller, a driver assistance system of the vehicle based on the at least one evaluation information pulse.

2. The method as claimed in claim 1 , wherein the measured value is introduced into the data transmission signal as a pulse from an active speed sensor.

3. The method as claimed in claim 2 , wherein the evaluation information includes an error-qualification range and an error-quantification range.

4. The method as claimed in claim 3 , wherein the error-qualification range is disposed upstream from the error-quantification range.

5. The method as claimed in claim 4 , wherein the error-qualification range comprises at least two information segments, of which a first one of the information segments qualifies a first error type and the second one of the information segments qualifies a second error type.

6. The method as claimed in claim 5 , wherein a sequence of the two information segments is dependent upon an error effect of the two error types.

7. The method as claimed in claim 3 , wherein the error-quantification range includes information regarding a cause of the error.

8. The method as claimed in claim 1 , wherein, if the measured value does not contain an error, additional information, which describes a sensor detecting the measured value, is introduced into the data transmission signal after the error information.

9. A control unit, which is designed for carrying out a method for transmitting error information in a data transmission signal, the control unit comprising:
a processor configured to:
receive, from a vehicle conditioning circuit:
measured value pulses introduced into the data transmission signal, the measured value pulses indicate a measured value detected by a sensor,
error information introduced into the data transmission signal after the measured value, the error information indicates that the measured value contains an error, and
at least one evaluation information pulse introduced into the data transmission signal, the at least one evaluation information pulse identifies the error in the measured value, and

control a driver assistance system of the vehicle based on the at least one evaluation information pulse in response to the error indication pulse indicating that the measured value contains an error.

10. A sensor, which comprises the control unit according to claim 9 .

11. The sensor according to claim 10 , wherein the sensor is a wheel speed sensor.

12. The method as claimed in claim 1 , wherein the evaluation information includes an error-qualification range and an error-quantification range.

13. The method as claimed in claim 3 , wherein the error-qualification range comprises at least two information segments, of which a first one of the information segments qualifies a first error type and the second one of the information segments qualifies a second error type.

Assignees

• Continental Teves Ag & Co Ohg
• Nxp Bv

Inventors

• Endres Ralf
• Zachow Jochen
• Kannengiesser Andreas
• Kock Jörg
• Meyer Robert

Classifications

• G01P21/02

  of speedometers · CPC title

• G01P3/489

  Digital circuits therefor · CPC title

• B60Y2400/3032

  Wheel speed sensors · CPC title

• B60T2270/416

  Wheel speed sensor failure · CPC title

• B60T17/18

  Safety devices; Monitoring · CPC title