Patent · US Expired

System for a machine having a large number of proximity sensors, as well as a proximity sensor, and a primary winding for this purpose

US6749119B2 · kind B2 · utility

202Cited by

6References

12Claims

0Family size

Assignee

ABB RESEARCH LTD. · CH

Inventors

Guntram Scheible · Hirschberg, DE
Bernd Smailus · Hemsbach, DE
Martin Klaus · Salzkotten, DE
Kai Garrels · Mannheim, DE
Lothar Heinemann · Paderborn, DE

Key dates

Filing date	Dec 11, 2001
Grant date	Jun 15, 2004
Priority date	—
Expiry date	Jan 19, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH03K17/945
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A system for a machine, in particular an automated production machine, has a large number of proximity sensors. Each proximity sensor has at least one secondary winding that is suitable for drawing power from a medium-frequency magnetic field. At least one primary winding, which is fed from a medium-frequency oscillator, is provided for supplying the proximity sensors with electrical power without using wires. Each proximity sensor is equipped with a transmitting device that emits radio signals, which contain sensor information of interest, to a central receiving device that is connected to a process computer for the machine. A proximity sensor and a primary winding for this purpose are also proposed.

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