公开(公告)号：US10109118B2

公开(公告)日：2018-10-23

申请号：US15026221

申请日：2013-10-04

Applicant: VOLVO TRUCK CORPORATION

Inventor： Niclas Karlsson ,  Magnus Svensson ,  Slavomir Nowaczyk ,  Stefan Byttner ,  Rune Prytz ,  Thorsteinn Rögnvaldsson

IPC: G01N33/00 ,  G07C5/08 ,  F01N11/00 ,  F02D41/14 ,  F02D41/22 ,  G05B23/02 ,  F01N3/021 ,  F01N3/20

Abstract: A method for monitoring the operation of a sensor is provided. The method comprises the step of representing the operation of the sensor by: i) storing a plurality of data values, each data value corresponding to the sensor output signal, wherein said step is performed during a time period such that said data values are distributed over a range of possible data values, ii) defining a plurality of discrete intervals within said range of possible data values; and iii) calculating the frequency of the data values within each interval thus forming a sensor representation. The method further comprises the steps of receiving at least one reference sensor representation; and comparing said sensor representation with said at least one reference sensor representation.