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WO2018134422A1 - Système et procédé de détermination d'un état de santé d'une guirlande lumineuse à del pulsée à intensité réglable - Google Patents

Système et procédé de détermination d'un état de santé d'une guirlande lumineuse à del pulsée à intensité réglable Download PDF

Info

Publication number
WO2018134422A1
WO2018134422A1 PCT/EP2018/051497 EP2018051497W WO2018134422A1 WO 2018134422 A1 WO2018134422 A1 WO 2018134422A1 EP 2018051497 W EP2018051497 W EP 2018051497W WO 2018134422 A1 WO2018134422 A1 WO 2018134422A1
Authority
WO
WIPO (PCT)
Prior art keywords
current
light string
circuit
expected
pulsed
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.)
Ceased
Application number
PCT/EP2018/051497
Other languages
English (en)
Inventor
Paul Smola
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.)
Signify Holding BV
Original Assignee
Philips Lighting Holding BV
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 Philips Lighting Holding BV filed Critical Philips Lighting Holding BV
Priority to CN201880007903.9A priority Critical patent/CN110178445B/zh
Priority to JP2019539792A priority patent/JP7163292B2/ja
Priority to US16/479,627 priority patent/US11470702B2/en
Priority to EP18702174.6A priority patent/EP3571896B1/fr
Publication of WO2018134422A1 publication Critical patent/WO2018134422A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • 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]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • 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
    • 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
    • G01R31/44—Testing lamps
    • 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

Definitions

  • the health indicator cannot utilize the simple determination operation as when the light string is constantly illuminated.
  • sensing circuitry is very sensitive to spurious variations in design currents.
  • the health indicator may output incorrect values for the health of a light string such as a false positive or a false negative.
  • determining a state of a circuit including an LED light string and a pulsed current driver of the LED light string determining an expected current expected to be passing through the circuit, the expected current associated with the ON or OFF pulsed current state; measuring a current through the circuit during a time when the circuit is in the ON or OFF pulsed current state; determining a comparison between the current and the expected current when the circuit is in an ON pulsed current state; and generating an output indicative of a health status of the circuit based on the comparison.
  • Fig. 3 shows a method for determining a health status of a light string according to the exemplary embodiments.
  • connection between the components illustrated in the system 100 of Fig. 1 are only exemplary.
  • the system 100 may include further
  • the exemplary embodiments may relate to when the light string 110 is configured to be dimmable.
  • each of the lights in the light string 110 and the connections between the lights when more than one light is included in the light string
  • the detecting device 130 may be configured to determine the health status of the light string 110 based on inputs received from the current sensor device 120 and the controller device 125. Specifically, the detecting device 130 may receive the current measurement from the current sensor device 120 and the expected intensity of the light string 110 from the controller device 125. It is noted that the expected intensity of the light string 110 received from the controller device 125 may be in any format that corresponds to the intensity. In one example, the format may be the expected current associated with the intensity that is forwarded from the controller device 125 to the detecting device 130. In another example, the controller device 125 via a digital to analog (D/A) output may output an analog voltage that corresponds to the desired intensity.
  • D/A digital to analog
  • the implementation 200 may be any circuitry implementation in which the components are interconnected with one another for signals to be exchanged. These components may be included on one or more integrated circuits, on one or more printed circuit boards, or implemented individually as needed.
  • the controller device 125 may be configured to generate and transmit a signal to the pulsed current driver device 115 based on the schedule (as an output 235), to a filter 205, and as a threshold signal 220. This signal output by the controller device 125 may indicate a current associated with a desired light string 110 intensity and/or the duration for using the intensity.
  • the current sensor device 120 may be configured to measure the current in the light string 110 and generate the current measurement signal (e.g., analog current value).
  • the comparator 225 may continuously receive the current measurement 215 from the current sensor device 120. However, it is noted that continuous monitoring of the current through the light string 110 is not a requirement.
  • the controller device 125 may transmit the signal that controls the current through the light string 110 to the pulsed current driver device 115.
  • the signal from the controller device 125 may also be passed through the filter 205 to provide a delay (e.g., low pass filter) to ensure that the remaining operations are performed at the correct time.
  • the filter 205 may be disposed on the pathway of the control signal between the controller device 125 and the latch 210 to ensure that the output from the comparator 225 is sampled only when the current measurement 215 corresponds to the threshold signal 220 (for example, when current should be flowing via the pulsed current driver device 115).
  • the output 230 of the latch 210 may change state to indicate that a full or partial failure has occurred and the current through the light string 110 does not correspond to the desired current as indicated by the threshold signal 220.
  • the output 230 of the latch 210 may be maintained to indicate that the light string 110 is operating within acceptable parameters.
  • the current sensor device 120 may transmit the first signal based on the configuration of the system 100. As illustrated, the current sensor device 120 is also connected to both the controller device 125 and the detecting device 130 (e.g., the comparator 225). Thus, the connection to the controller device 125 and the detecting device 130 may provide output paths for the current sensor device 120 such that the first signal is transmitted to both of these components. Constructively, based on the implementation 200, the first signal may be passed to the comparator 225 and does not necessarily have to be passed to the controller device 125.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

L'invention concerne un système et un procédé permettant de déterminer un état de santé d'une guirlande lumineuse à DEL. Le système (100) comprend un circuit qui comprend une guirlande lumineuse à DEL (110) et un circuit d'attaque de courant pulsé (115) de la guirlande lumineuse à DEL. Le circuit est connecté à un bloc d'alimentation (105). Le système comprend un capteur de courant (120) mesurant un courant à travers le circuit. Le système comprend un dispositif de détection (130) déterminant un état du circuit. Le dispositif de détection détermine un courant attendu prévu pour passer par le circuit, le courant attendu étant associé à l'état. Le dispositif de détection reçoit une mesure de courant en provenance du capteur de courant pendant une période pendant laquelle le circuit est dans l'état. Le dispositif de détection détermine une comparaison entre la mesure de courant et le courant attendu. Le dispositif de détection génère une sortie indiquant un état de santé du circuit sur la base de la comparaison.
PCT/EP2018/051497 2017-01-23 2018-01-23 Système et procédé de détermination d'un état de santé d'une guirlande lumineuse à del pulsée à intensité réglable Ceased WO2018134422A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201880007903.9A CN110178445B (zh) 2017-01-23 2018-01-23 用于确定可调光脉冲led灯串的健康状态的系统和方法
JP2019539792A JP7163292B2 (ja) 2017-01-23 2018-01-23 調光可能なパルス駆動されるｌｅｄライトストリングの健全性状態を判断するためのシステム及び方法
US16/479,627 US11470702B2 (en) 2017-01-23 2018-01-23 System, and method for determining a health status of a dimmable pulsed LED light string
EP18702174.6A EP3571896B1 (fr) 2017-01-23 2018-01-23 Dispositif, système et procédé pour déterminer l'état de santé d'une guirlande lumineuse à intensité réglable

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201762449559P 2017-01-23 2017-01-23
US62/449559 2017-01-23
EP17154914 2017-02-07
EP17154914.0 2017-02-07

Publications (1)

Publication Number Publication Date
WO2018134422A1 true WO2018134422A1 (fr) 2018-07-26

Family

ID=58056963

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/051497 Ceased WO2018134422A1 (fr) 2017-01-23 2018-01-23 Système et procédé de détermination d'un état de santé d'une guirlande lumineuse à del pulsée à intensité réglable

Country Status (1)

Country Link
WO (1) WO2018134422A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116430271A (zh) * 2023-03-06 2023-07-14 深圳市乐的美光电股份有限公司 一种用于led软灯条的在线检测方法、智能终端及存储介质

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135540A (en) * 1983-02-17 1984-08-30 Pa Consulting Services Lamp failure alarm
WO2002067637A1 (fr) * 2001-02-16 2002-08-29 Raynesway Construction Southern Ltd Systeme d"eclairage routier
EP1750486A1 (fr) * 2005-07-29 2007-02-07 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Dispositif avec multiple matrices de LEDs, matrice de LEDs et son méthode de fabrication
US20080094349A1 (en) * 2006-10-19 2008-04-24 Richtek Technology Corporation Backlight control circuit
US20110309759A1 (en) * 2006-01-20 2011-12-22 Exclara Inc. Adaptive Current Regulation for Solid State Lighting
EP2744304A2 (fr) * 2012-12-17 2014-06-18 Schneider Electric Industrie Italia S.p.A. Ensemble permettant de détecter l'émission de lumière des sources de lumière d'urgence, en particulier du type DEL
US20150015143A1 (en) * 2013-07-10 2015-01-15 Panasonic Corporation Light-emitting-diode-driving device, lighting apparatus for vehicle and vehicle including the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135540A (en) * 1983-02-17 1984-08-30 Pa Consulting Services Lamp failure alarm
WO2002067637A1 (fr) * 2001-02-16 2002-08-29 Raynesway Construction Southern Ltd Systeme d"eclairage routier
EP1750486A1 (fr) * 2005-07-29 2007-02-07 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Dispositif avec multiple matrices de LEDs, matrice de LEDs et son méthode de fabrication
US20110309759A1 (en) * 2006-01-20 2011-12-22 Exclara Inc. Adaptive Current Regulation for Solid State Lighting
US20080094349A1 (en) * 2006-10-19 2008-04-24 Richtek Technology Corporation Backlight control circuit
EP2744304A2 (fr) * 2012-12-17 2014-06-18 Schneider Electric Industrie Italia S.p.A. Ensemble permettant de détecter l'émission de lumière des sources de lumière d'urgence, en particulier du type DEL
US20150015143A1 (en) * 2013-07-10 2015-01-15 Panasonic Corporation Light-emitting-diode-driving device, lighting apparatus for vehicle and vehicle including the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116430271A (zh) * 2023-03-06 2023-07-14 深圳市乐的美光电股份有限公司 一种用于led软灯条的在线检测方法、智能终端及存储介质

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