Patent · US Expired

Diagnostic device for detecting short circuits or line interruptions in an inductive sensor

US6456085B1 · kind B1 · utility

12Cited by

2References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Franz Dietl · Lappersdorf, DE
Alfons Fisch · Rockenhausen, DE
Frank Vogel · Boulder, US
Horst Punzmann · Canberra, AU

Key dates

Filing date	May 22, 2000
Grant date	Sep 24, 2002
Priority date	—
Expiry date	May 22, 2020

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60L2250/16
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A symmetrical voltage divider whose tap is supplied with a reference voltage via a resistor is connected between the terminals of an inductive sensor. A diagnostic voltage is applied to the tap. Using evaluation devices, the diagnostic voltage is compared with two threshold values in a stationary state, and then sampled in the operational state, and a difference is calculated from the largest and smallest sampled, values and is compared with a third threshold value. Short circuits or line interruptions are detected from the comparison result and are displayed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.