Patent · US Active

Device and method for monitoring a signal emitter comprising a light-emitting diode in a light-signal system

US10006616B2 · kind B2 · utility

0Cited by

1References

22Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Robert E. Braatz · Sun Prairie, US
Heiko Junker · Hersbruck, DE
Robert Runge · Antdorf, DE
Geert De Zaeyer · Borgo San Lazzaro, DE

Key dates

Filing date	Sep 17, 2015
Grant date	Jun 26, 2018
Priority date	—
Expiry date	Sep 17, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH05B45/46
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An apparatus for monitoring a signal transmitter for a traffic control signal installation. The signal transmitter has a light-emitting diode. The monitoring apparatus includes: a two-channel measuring device for measuring an actual light intensity of the light which is emitted by the diode and for measuring at least one electrical characteristic variable of the diode, and a control device for operating the signal transmitter depending on the measured actual light intensity and the measured electrical characteristic variable. There is also described a corresponding method, a signal transmitter, a traffic control signal installation and a computer program.

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