IT201900006028A1 - Sistema per determinare il numero di LED guasti in almeno una stringa di LED e relativo metodo. - Google Patents

Sistema per determinare il numero di LED guasti in almeno una stringa di LED e relativo metodo.

Info

Publication number
IT201900006028A1
IT201900006028A1 IT102019000006028A IT201900006028A IT201900006028A1 IT 201900006028 A1 IT201900006028 A1 IT 201900006028A1 IT 102019000006028 A IT102019000006028 A IT 102019000006028A IT 201900006028 A IT201900006028 A IT 201900006028A IT 201900006028 A1 IT201900006028 A1 IT 201900006028A1
Authority
IT
Italy
Prior art keywords
determining
led string
faulty leds
faulty
leds
Prior art date
Application number
IT102019000006028A
Other languages
English (en)
Inventor
Gianfranco Tinti
Massimiliano Tinti
Original Assignee
Tecnologie Mecc S R L
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 Tecnologie Mecc S R L filed Critical Tecnologie Mecc S R L
Priority to IT102019000006028A priority Critical patent/IT201900006028A1/it
Publication of IT201900006028A1 publication Critical patent/IT201900006028A1/it

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
    • 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
    • H05B47/235—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in series with communication between the lamps and a central unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/12—Visible signals
    • B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L7/00—Remote control of local operating means for points, signals, or track-mounted scotch-blocks
    • B61L7/06—Remote control of local operating means for points, signals, or track-mounted scotch-blocks using electrical transmission
    • B61L7/08—Circuitry
    • B61L7/10—Circuitry for light signals, e.g. for supervision, back-signalling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L9/00—Illumination specially adapted for points, form signals, or gates
    • B61L9/04—Illumination specially adapted for points, form signals, or gates electric
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/26—Testing of individual semiconductor devices
    • G01R31/2607—Circuits therefor
    • G01R31/2632—Circuits therefor for testing diodes
    • G01R31/2635—Testing light-emitting diodes, laser diodes or photodiodes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • 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
    • H05B45/54—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a series array 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L2207/00—Features of light signals
    • B61L2207/02—Features of light signals using light-emitting diodes [LEDs]

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
IT102019000006028A 2019-04-18 2019-04-18 Sistema per determinare il numero di LED guasti in almeno una stringa di LED e relativo metodo. IT201900006028A1 (it)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT102019000006028A IT201900006028A1 (it) 2019-04-18 2019-04-18 Sistema per determinare il numero di LED guasti in almeno una stringa di LED e relativo metodo.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102019000006028A IT201900006028A1 (it) 2019-04-18 2019-04-18 Sistema per determinare il numero di LED guasti in almeno una stringa di LED e relativo metodo.

Publications (1)

Publication Number Publication Date
IT201900006028A1 true IT201900006028A1 (it) 2020-10-18

Family

ID=67384245

Family Applications (1)

Application Number Title Priority Date Filing Date
IT102019000006028A IT201900006028A1 (it) 2019-04-18 2019-04-18 Sistema per determinare il numero di LED guasti in almeno una stringa di LED e relativo metodo.

Country Status (1)

Country Link
IT (1) IT201900006028A1 (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022152573A1 (de) * 2021-01-13 2022-07-21 Lichtwart Gmbh Verfahren und steuervorrichtung zur steuerung einer lichtanlage

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6147617A (en) * 1998-07-21 2000-11-14 Bong Oh Electronics Ind. Co., Ltd. Apparatus and method for detecting faults in outdoor display
US20070159750A1 (en) 2006-01-09 2007-07-12 Powerdsine, Ltd. Fault Detection Mechanism for LED Backlighting
US20120050697A1 (en) * 2010-08-24 2012-03-01 Casio Computer Co., Ltd. Semiconductor light source device, semiconductor light source control method, and projection apparatus
US20140210349A1 (en) * 2013-01-30 2014-07-31 Delta Electronics, Inc. Light-emitting device and control method of the same
DE102014112176A1 (de) * 2014-08-26 2015-03-12 Osram Oled Gmbh Verfahren zum Betreiben einer optoelektronischen Baugruppe und optoelektronische Baugruppe
US20160128143A1 (en) * 2013-05-22 2016-05-05 Sharp Kabushiki Kaisha Light source substrate, display apparatus, and light source substrate inspection method
FR3049064A1 (fr) * 2016-03-21 2017-09-22 Valeo Vision Procede et dispositif permettant de detecter des court-circuits resisitifs dans un dispositif lumineux pour vehicule automobile

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6147617A (en) * 1998-07-21 2000-11-14 Bong Oh Electronics Ind. Co., Ltd. Apparatus and method for detecting faults in outdoor display
US20070159750A1 (en) 2006-01-09 2007-07-12 Powerdsine, Ltd. Fault Detection Mechanism for LED Backlighting
US20120050697A1 (en) * 2010-08-24 2012-03-01 Casio Computer Co., Ltd. Semiconductor light source device, semiconductor light source control method, and projection apparatus
US20140210349A1 (en) * 2013-01-30 2014-07-31 Delta Electronics, Inc. Light-emitting device and control method of the same
US20160128143A1 (en) * 2013-05-22 2016-05-05 Sharp Kabushiki Kaisha Light source substrate, display apparatus, and light source substrate inspection method
DE102014112176A1 (de) * 2014-08-26 2015-03-12 Osram Oled Gmbh Verfahren zum Betreiben einer optoelektronischen Baugruppe und optoelektronische Baugruppe
FR3049064A1 (fr) * 2016-03-21 2017-09-22 Valeo Vision Procede et dispositif permettant de detecter des court-circuits resisitifs dans un dispositif lumineux pour vehicule automobile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022152573A1 (de) * 2021-01-13 2022-07-21 Lichtwart Gmbh Verfahren und steuervorrichtung zur steuerung einer lichtanlage

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