EP1006759A3 - System for monitoring a lighting installation or light signaling equipment having a plurality of light points of the led or similar type - Google Patents

System for monitoring a lighting installation or light signaling equipment having a plurality of light points of the led or similar type Download PDF

Info

Publication number
EP1006759A3
EP1006759A3 EP99830640A EP99830640A EP1006759A3 EP 1006759 A3 EP1006759 A3 EP 1006759A3 EP 99830640 A EP99830640 A EP 99830640A EP 99830640 A EP99830640 A EP 99830640A EP 1006759 A3 EP1006759 A3 EP 1006759A3
Authority
EP
European Patent Office
Prior art keywords
light
monitoring
led
leds
series
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99830640A
Other languages
German (de)
French (fr)
Other versions
EP1006759A2 (en
EP1006759B1 (en
Inventor
Redi Paolo
Lori Lorenzo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sei Sistemi Energetici Integrati Srl
Original Assignee
Sei Sistemi Energetici Integrati Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sei Sistemi Energetici Integrati Srl filed Critical Sei Sistemi Energetici Integrati Srl
Publication of EP1006759A2 publication Critical patent/EP1006759A2/en
Publication of EP1006759A3 publication Critical patent/EP1006759A3/en
Application granted granted Critical
Publication of EP1006759B1 publication Critical patent/EP1006759B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/58—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving end of life detection of LEDs
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/23—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in series

Abstract

The system comprises groups (1, 3, 5) of LEDs, the LEDs of each of the groups being connected in series with each other; a direct current power supply (1B, 3B, 5B) is provided for each series; in a microprocessor (9) each of a plurality of inputs is connected to an intermediate point (1C, 3C, 5C) of one of the series of LEDs, so that an interruption of current in one of the series of LEDs or a short-circuit in one LED causes a change in the voltage at the corresponding input of the microprocessor, and a scanning means is used for monitoring the individual inputs by scanning; at the output of said microprocessor, a detector (12) signals this change, during scanning, by means of a relay (12C).
EP99830640A 1998-12-04 1999-10-11 System for monitoring a lighting installation or light signaling equipment having a plurality of light points of the led or similar type Expired - Lifetime EP1006759B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI980264 1998-12-04
IT1998FI000264A IT1305051B1 (en) 1998-12-04 1998-12-04 CONTROL SYSTEM OF A LIGHTING OR LIGHT SIGNALING SYSTEM WITH A MULTIPLICITY OF LED LIGHT POINTS OR SIMILAR

Publications (3)

Publication Number Publication Date
EP1006759A2 EP1006759A2 (en) 2000-06-07
EP1006759A3 true EP1006759A3 (en) 2003-04-23
EP1006759B1 EP1006759B1 (en) 2005-05-04

Family

ID=11352723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99830640A Expired - Lifetime EP1006759B1 (en) 1998-12-04 1999-10-11 System for monitoring a lighting installation or light signaling equipment having a plurality of light points of the led or similar type

Country Status (4)

Country Link
EP (1) EP1006759B1 (en)
DE (1) DE69925092T2 (en)
ES (1) ES2248977T3 (en)
IT (1) IT1305051B1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003219642A1 (en) * 2002-02-08 2003-09-02 Ortana Elektronik Yazilim Taahhut Sanayi Ve Ticaret Ltd. Sti. Smart led traffic lamp
GB0402974D0 (en) * 2004-02-11 2004-03-17 Bhagat Peter Apparatus for the control of lighting and associated methods
ITRM20040448A1 (en) * 2004-09-22 2004-12-22 Tecnologie Meccaniche S R L POWER SUPPLY AND FAULT DETECTION INTERFACE FOR AN LED OPTICAL SIGNALER, IN PARTICULAR FOR ADAPTATION TO RAILWAY POWER NETWORKS.
JP4926784B2 (en) * 2007-03-29 2012-05-09 株式会社小糸製作所 Light emitting device
CN102033174A (en) * 2010-09-30 2011-04-27 中国铁路通信信号上海工程集团有限公司 Indicator as well as fault diagnosis system and method thereof
US8607106B2 (en) 2010-10-25 2013-12-10 Himax Analogic, Inc. Channel detection device
KR20120083005A (en) 2011-01-17 2012-07-25 삼성전자주식회사 Apparatus and method for sensing fail
TWI607673B (en) 2017-03-21 2017-12-01 聚積科技股份有限公司 Failure detection system and method
TWI625532B (en) 2017-03-21 2018-06-01 Failure detection system and method
US10187955B2 (en) * 2017-06-09 2019-01-22 Infineon Technologies Ag Detection of single short-LED in LED chains
DE102019208132A1 (en) * 2019-06-04 2020-12-10 Heraeus Noblelight Gmbh ARRANGEMENT WITH LIGHTING DEVICE AND MEASURING DEVICE, INCLUDING AN ELECTRICAL MEASURING CIRCUIT AND A SELECTION CIRCUIT

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5359325A (en) * 1991-10-03 1994-10-25 Cooper Industries, Inc. Automatic monitoring system for airfield lighting systems
US5459328A (en) * 1993-05-31 1995-10-17 Fujitsu Limited Driver circuit for light emitting elements connected in series and an optical amplifying repeater using the same
FR2724749A1 (en) * 1994-09-15 1996-03-22 Sofrela Sa LED lamps with integral controller for road traffic control signals
US5644304A (en) * 1992-07-22 1997-07-01 Pavarotti; Remo Automatic control system of lights in a series circuit illumination plant, in particular lights for airport signalling
US5663719A (en) * 1993-04-29 1997-09-02 Electro-Tech's LED traffic signal light with automatic low-line voltage compensating circuit
WO1998015840A2 (en) * 1996-09-26 1998-04-16 Denis Vadimovich Andreev System for monitoring the condition of a plurality of lamps
WO1998049872A1 (en) * 1997-04-30 1998-11-05 Signal House Limited Traffic signals

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5359325A (en) * 1991-10-03 1994-10-25 Cooper Industries, Inc. Automatic monitoring system for airfield lighting systems
US5644304A (en) * 1992-07-22 1997-07-01 Pavarotti; Remo Automatic control system of lights in a series circuit illumination plant, in particular lights for airport signalling
US5663719A (en) * 1993-04-29 1997-09-02 Electro-Tech's LED traffic signal light with automatic low-line voltage compensating circuit
US5459328A (en) * 1993-05-31 1995-10-17 Fujitsu Limited Driver circuit for light emitting elements connected in series and an optical amplifying repeater using the same
FR2724749A1 (en) * 1994-09-15 1996-03-22 Sofrela Sa LED lamps with integral controller for road traffic control signals
WO1998015840A2 (en) * 1996-09-26 1998-04-16 Denis Vadimovich Andreev System for monitoring the condition of a plurality of lamps
WO1998049872A1 (en) * 1997-04-30 1998-11-05 Signal House Limited Traffic signals

Also Published As

Publication number Publication date
EP1006759A2 (en) 2000-06-07
DE69925092D1 (en) 2005-06-09
ITFI980264A1 (en) 2000-06-05
DE69925092T2 (en) 2006-01-26
EP1006759B1 (en) 2005-05-04
IT1305051B1 (en) 2001-04-10
ES2248977T3 (en) 2006-03-16
ITFI980264A0 (en) 1998-12-04

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