发明名称 |
Method and device for checking a sensor signal |
摘要 |
Depending on a sensor signal, a noise signal which suppresses a useful signal spectrum of the sensor signal is determined by filtering using a filter. A noise variable, which is a measure of a noise of the sensor signal, is determined depending on the noise signal. An error of the sensor signal is identified depending on the noise variable determined. |
申请公布号 |
US8797047(B2) |
申请公布日期 |
2014.08.05 |
申请号 |
US200712445089 |
申请日期 |
2007.09.14 |
申请人 |
Continental Automotive GmbH |
发明人 |
Jiang Zheng-Yu;Kretschmann Matthias;Preis Herbert;Resch Christoph |
分类号 |
G01R29/26 |
主分类号 |
G01R29/26 |
代理机构 |
King & Spalding L.L.P. |
代理人 |
King & Spalding L.L.P. |
主权项 |
1. A method of checking a sensor signal of a sensor, comprising the steps of:
in dependence upon the sensor signal, determining a noise signal by means of filtering with a filter that suppresses a useful signal spectrum of the sensor signal, in dependence upon the noise signal, determining a noise quantity, which is a measure of a noise of the sensor signal, and detecting an error of the sensor signal in dependence upon the determined noise quantity, wherein the noise quantity is determined as a standard deviation of the noise signal, and wherein the standard deviation for an actual time step is determined recursively in dependence upon a first value, which was determined as the standard deviation for a preceding time step, and a second value, which represents the noise signal at the actual time step. |
地址 |
Hannover DE |