EP4430921A1 - Lighting system - Google Patents

Lighting system

Info

Publication number
EP4430921A1
EP4430921A1 EP22835400.7A EP22835400A EP4430921A1 EP 4430921 A1 EP4430921 A1 EP 4430921A1 EP 22835400 A EP22835400 A EP 22835400A EP 4430921 A1 EP4430921 A1 EP 4430921A1
Authority
EP
European Patent Office
Prior art keywords
converters
lighting
system unit
ripple
backend system
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.)
Pending
Application number
EP22835400.7A
Other languages
German (de)
French (fr)
Inventor
Patrick WALCH
Jakob Maldoner
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.)
Tridonic GmbH and Co KG
Original Assignee
Tridonic GmbH and Co KG
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 Tridonic GmbH and Co KG filed Critical Tridonic GmbH and Co KG
Publication of EP4430921A1 publication Critical patent/EP4430921A1/en
Pending 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]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/12—Controlling the intensity of the light using optical feedback
    • 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
    • G01R31/64—Testing of capacitors
    • 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]
    • H05B45/50—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

Definitions

  • the invention is in the field of detection of a non-optimal operation or faulty operation of a converter, in particular, for LED-based lighting means .
  • Predictive maintenance is playing an increasingly important role regarding customer satis faction, security, data processing, and maintenance .
  • Electrolytic capacitors play an important role for the function of many electronic devices .
  • EP 2 607 238 Al discloses a standalone lighting system being configured to detect a reduced light intensity over time being produced by degradation ef fects of one or more LED based lighting means .
  • a lighting system comprises one or more converters for driving LED lighting means , one or more LED based lighting means driven by the one or more converters , a backend system unit for the lighting system, and a lighting sensor arranged for detecting light emitted by the one or more lighting means , and arranged for issuing a signal to said backend system unit , the backend system unit being configured to analyze the signal supplied by the sensor in order to detect whether one or more characteristic ( s ) of the light emitted by the one or more lighting means is/are within preset ranges , wherein the one or more characteristic ( s ) comprise a low- frequency ripple being produced by degradation ef fects of electronic components of the one or more converters ( 101 , 102 , 103 ) .
  • This provides the advantage that a future failure of the one or more converters can easily be predicted .
  • the backend system unit is connected to the one or more converters via a wired or wireless control channel .
  • This provides the advantage that a failure of the one or more converters can be avoided.
  • the lighting system comprises an electrolytic capacitor
  • the backend system unit is configured to detect a low-frequency ripple produced by a deterioration of the electrolytic capacitor.
  • the one or more converters comprise a communication interface, e.g., a DALI interface.
  • the lighting system further comprises a RF communication interface associated to the backend system unit.
  • the lighting sensor comprises a camera sensor. This provides the advantage that the light emitted by the one or more lighting means can easily be detected .
  • the camera sensor is arranged to detect light of the one or more lighting means driven by the one or more converters .
  • This provides the advantage that the light emitted by the one or more lighting means can easily be detected .
  • the invention relates to a luminaire comprising a lighting system according to the first aspect and any one of the implementation forms thereof .
  • the luminaire according to the second aspect provides the same advantages as the lighting system according to the first aspect .
  • the invention relates to a method for detecting a ripple in a light output of one or more LED based lighting means driven by one or more converters , the ripple being produced by degradation ef fects of electronic components of the one or more converters .
  • the method comprises the steps of : sensing the light output of the one or more LED based lighting means ; and analyzing, in a backend system unit , whether a ripple amplitude in the sensed light output is higher than a threshold value .
  • the method according to the third aspect provides the same advantages as the lighting system according to the first aspect .
  • the method further comprises the step of : modi fying, by the backend system unit , the light output for a given nominal light output value of the one or more converters .
  • the method further comprises the step of sending a signal to the one or more converters , by the backend system unit , i f the ripple amplitude in the sensed light output is higher than the threshold value .
  • the electronic components of the one or more converters comprise an electrolytic capacitor .
  • the method further comprises detecting a low- frequency ripple produced by a deterioration of the electrolytic capacitor .
  • the invention relates to the use of a sensor for detecting low frequency ripple , the ripple being produced by degradation ef fects of electronic components of one or more converters for driving LED lighting means .
  • Fig . 1 shows a schematic representation of a lighting system comprising one or more converters for driving LED lighting means according to an embodiment
  • Fig . 2 shows a schematic representation of a method for detecting a ripple in a light output of one or more LED based lighting means driven by one or more converters according to an embodiment .
  • the aspect of the present invention might contain integrated circuits that are readily manufacturable using conventional semiconductor technologies , such as complementary metal-oxide semiconductor technology, short "CMOS" .
  • CMOS complementary metal-oxide semiconductor technology
  • the aspects of the present invention may be implemented with other manufacturing processes for making optical as well as electrical devices .
  • Fig. 1 shows a schematic representation of a lighting system 100 comprising one or more converters 101, 102, 103 for driving lighting means according to an embodiment.
  • the lighting system 100 comprises: one or more converters 101, 102, 103 for driving LED lighting means, one or more LED based lighting means 104, 105, 106 driven by the one or more converters 101, 102, 103; a backend system unit 107 for the lighting system 100, and a lighting sensor 108 arranged for detecting light emitted by the one or more lighting means 104, 105, 106 and arranged for issuing a signal to said backend system unit 107, the backend system unit 107 being configured to analyze the signal supplied by the sensor 108 in order to detect whether one or more characteristic ( s ) of the light emitted by the one or more lighting means 104, 105, 106 is/are within preset ranges, and to preferably issue a signal in case one or more characteristics are outside its/their respective characteristic ( s ) .
  • the lighting sensor 108 can be configured to detect the light output from the one or more LED light sources 104, 105, 106, and either carries out an evaluation of the light output itself, for example with regard to a possible ripple, and sends a signal to the backend system unit 107, or reports a signal reflecting the light level to the backend system unit 107.
  • this direct light power detection makes it possible to directly detect the quality of the light generated by the one or more converters 101, 102, 103 and, for example, to evaluate it for a ripple level that may possibly increase due to aging of the electronic components of the one or more converters 101, 102, 103.
  • the backend system unit 107 can be configured to send an error or maintenance message, if the detected ripple has exceeded a predetermined threshold value.
  • the aging-related increase in the ripple may be caused by aging of a storage capacitor (electrolytic capacitor) at the output of the control gear.
  • the one or more converters 101, 102, 103 do not have a communication interface (e.g. DALI) , based on the values recorded by the lighting sensor 108, the operating status of the LED can still be recorded via the backend system unit 108 and, thus, responded.
  • a communication interface e.g. DALI
  • the one or more converters 101, 102, 103 have a communication interface (e.g., DALI) , there can be a direct connection to the backend system unit 107.
  • the lighting sensor 107 can carry out evaluations in addition to the existing diagnostic data of the one or more converters 101, 102, 103.
  • the one or more converters 101, 102, 103 can comprise a wireless communication interface and a RE interface 109 can be assigned to the backend system unit 107.
  • the lighting sensor 107 can be configured to detect the light output in a spatially resolved manner with respect to the plurality of light sources 104, 105, 106 assigned to the different converters 101, 102, 103.
  • the lighting sensor 108 can be implemented by a camera, so that the lighting sensor, then, can be configured to send either the light power signal from different light sources 104, 105, 106, or the evaluation of the ripple, or the evaluation of an exceeding of predetermined threshold values by the ripple, to the backend system unit 107.
  • the current LED light level can be corrected back to the initial value (current level adjustment or voltage adjustment for "constant voltage” devices) . This advantageously ensures a homogeneous light level with different light sources (aging) .
  • the backend system unit 107 can send control signals to the one or more converters 101, 102, 103, if an excessive low-frequency (LF) ripple was detected in their light output.
  • the operation of the assigned converters 101, 102, 103 can, thus, be changed in such a way that, for example, the effect of the ripple in the overall lighting system is reduced, for example, by dimming or changing the operating mode of the one or more converters 101, 102, 103.
  • Fig. 2 shows a schematic representation of a method 200 for detecting a ripple in a light output of one or more LED based lighting means 104, 105, 106 driven by one or more converters 101, 102, 103, the ripple being produced by degradation effects of electronic components of the one or more converters 101, 102,103, according to an embodiment.
  • the method comprises the steps of: sensing 201 the light output of the LED based lighting means 104 , 105 , 106 ; and analyzing 202 , in a backend system unit 107 , whether a ripple amplitude in the sensed light output is higher than a threshold value .

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The invention relates to a lighting system, comprising: one or more converters for driving LED lighting means, one or more LED based lighting means driven by the one or more converters; a backend system unit for the lighting system, and a lighting sensor arranged for detecting light emitted by the one or more lighting means and arranged for issuing a signal to said backend system unit, the backend system unit being configured to analyze the signal supplied by the sensor in order to detect whether one or more characteristic(s) of the light emitted by the one or more lighting means is/are within preset ranges, and to preferably issue a signal in case one or more characteristics are outside its/their respective characteristic(s).

Description

Lighting system
TECHNICAL FIELD OF THE INVENTION
The invention is in the field of detection of a non-optimal operation or faulty operation of a converter, in particular, for LED-based lighting means .
BACKGROUND OF THE INVENTION
Predictive maintenance is playing an increasingly important role regarding customer satis faction, security, data processing, and maintenance .
Electrolytic capacitors (ELCAPS ) play an important role for the function of many electronic devices . The increasing demand for an enhanced ef ficiency, the growing utili zation of renewable energy and the continuous growth of electronic content in, e . g . , automotive applications have driven the usage of these components .
In many applications , the li fetime of electronic devices is directly related to the li fetime of ELCAPS inside . In order to ensure a reliable operation of electronic devices for a defined period, the knowledge of the properties of the ELCAPS is desirable . EP 2 607 238 Al discloses a standalone lighting system being configured to detect a reduced light intensity over time being produced by degradation ef fects of one or more LED based lighting means .
Thus , it is an obj ective to provide for an improved predictive lighting system and method on how an upcoming failure of electronic devices , in particular LED luminaires or LED-based lighting means , can be avoided .
SUMMARY OF THE INVENTION
The obj ect of the present invention is achieved by the solution provided in the enclosed independent claims . Advantageous implementations of the present invention are further defined in the dependent claims .
According to a first aspect of the invention, a lighting system is provided . The lighting system comprises one or more converters for driving LED lighting means , one or more LED based lighting means driven by the one or more converters , a backend system unit for the lighting system, and a lighting sensor arranged for detecting light emitted by the one or more lighting means , and arranged for issuing a signal to said backend system unit , the backend system unit being configured to analyze the signal supplied by the sensor in order to detect whether one or more characteristic ( s ) of the light emitted by the one or more lighting means is/are within preset ranges , wherein the one or more characteristic ( s ) comprise a low- frequency ripple being produced by degradation ef fects of electronic components of the one or more converters ( 101 , 102 , 103 ) .
This provides the advantage that a future failure of the one or more converters can easily be predicted .
In a preferred embodiment , the backend system unit is connected to the one or more converters via a wired or wireless control channel .
In a preferred embodiment , the backend system unit is configured to modify an operation of the one or more converters, if the characteristic ( s ) is/are outside the preset ranges .
This provides the advantage that a failure of the one or more converters can be avoided.
In a preferred embodiment, the lighting system comprises an electrolytic capacitor, and the backend system unit is configured to detect a low-frequency ripple produced by a deterioration of the electrolytic capacitor.
This provides the advantage that the lifetime of the electrolytic capacitor reflects the lifetime of the one or more converters. Therefore, by detecting a deterioration of the electrolytic capacitor, a deterioration of the one or more converters can be detected as well.
In a preferred embodiment, the one or more converters comprise a communication interface, e.g., a DALI interface.
This provides the advantage that a well-known communication interface, such as a DALI interface, can be used.
In a preferred embodiment, the lighting system further comprises a RF communication interface associated to the backend system unit.
This provides the advantage that a well-known communication interface, such as a RF interface, can be used.
In a preferred embodiment, the lighting sensor comprises a camera sensor. This provides the advantage that the light emitted by the one or more lighting means can easily be detected .
In a preferred embodiment , the camera sensor is arranged to detect light of the one or more lighting means driven by the one or more converters .
This provides the advantage that the light emitted by the one or more lighting means can easily be detected .
According to a second aspect , the invention relates to a luminaire comprising a lighting system according to the first aspect and any one of the implementation forms thereof .
The luminaire according to the second aspect provides the same advantages as the lighting system according to the first aspect .
According to a third aspect , the invention relates to a method for detecting a ripple in a light output of one or more LED based lighting means driven by one or more converters , the ripple being produced by degradation ef fects of electronic components of the one or more converters . The method comprises the steps of : sensing the light output of the one or more LED based lighting means ; and analyzing, in a backend system unit , whether a ripple amplitude in the sensed light output is higher than a threshold value .
The method according to the third aspect provides the same advantages as the lighting system according to the first aspect . In a preferred embodiment , the method further comprises the step of : modi fying, by the backend system unit , the light output for a given nominal light output value of the one or more converters .
In a preferred embodiment , the method further comprises the step of sending a signal to the one or more converters , by the backend system unit , i f the ripple amplitude in the sensed light output is higher than the threshold value .
In a preferred embodiment , the electronic components of the one or more converters comprise an electrolytic capacitor .
In a preferred embodiment , the method further comprises detecting a low- frequency ripple produced by a deterioration of the electrolytic capacitor .
According to a fourth aspect , the invention relates to the use of a sensor for detecting low frequency ripple , the ripple being produced by degradation ef fects of electronic components of one or more converters for driving LED lighting means .
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be explained in the followings together with the figures .
Fig . 1 shows a schematic representation of a lighting system comprising one or more converters for driving LED lighting means according to an embodiment ; and
Fig . 2 shows a schematic representation of a method for detecting a ripple in a light output of one or more LED based lighting means driven by one or more converters according to an embodiment .
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Aspects of the present invention are described herein in the context of a lighting system .
The present invention is described more fully hereinafter with reference to the accompanying drawings , in which various aspects of the present invention are shown . This invention however may be embodied in many di f ferent forms and should not be construed as limited to the various aspects of the present invention presented through this disclosure . Rather, these aspects are provided so that this disclosure will be thorough and complete , and will fully convey the scope of the present invention to those skilled in the art . The various aspects of the present invention illustrated in the drawings may not be drawn to scale . Rather, the dimensions of the various features may be expanded or reduced for clarity . In addition, some of the drawings may be simpli fied for clarity . Thus , the drawings may not depict all of the components of a given apparatus .
It is further understood that the aspect of the present invention might contain integrated circuits that are readily manufacturable using conventional semiconductor technologies , such as complementary metal-oxide semiconductor technology, short "CMOS" . In addition, the aspects of the present invention may be implemented with other manufacturing processes for making optical as well as electrical devices . Reference will now be made in detail to implementations of the exemplary aspects as illustrated in the accompanying drawings . The same references signs will be used throughout the drawings and the following detailed descriptions to refer to the same or like parts.
Fig. 1 shows a schematic representation of a lighting system 100 comprising one or more converters 101, 102, 103 for driving lighting means according to an embodiment.
The lighting system 100 comprises: one or more converters 101, 102, 103 for driving LED lighting means, one or more LED based lighting means 104, 105, 106 driven by the one or more converters 101, 102, 103; a backend system unit 107 for the lighting system 100, and a lighting sensor 108 arranged for detecting light emitted by the one or more lighting means 104, 105, 106 and arranged for issuing a signal to said backend system unit 107, the backend system unit 107 being configured to analyze the signal supplied by the sensor 108 in order to detect whether one or more characteristic ( s ) of the light emitted by the one or more lighting means 104, 105, 106 is/are within preset ranges, and to preferably issue a signal in case one or more characteristics are outside its/their respective characteristic ( s ) .
For example, the lighting sensor 108 can be configured to detect the light output from the one or more LED light sources 104, 105, 106, and either carries out an evaluation of the light output itself, for example with regard to a possible ripple, and sends a signal to the backend system unit 107, or reports a signal reflecting the light level to the backend system unit 107. In any case, this direct light power detection makes it possible to directly detect the quality of the light generated by the one or more converters 101, 102, 103 and, for example, to evaluate it for a ripple level that may possibly increase due to aging of the electronic components of the one or more converters 101, 102, 103.
For example, the backend system unit 107 can be configured to send an error or maintenance message, if the detected ripple has exceeded a predetermined threshold value.
The aging-related increase in the ripple may be caused by aging of a storage capacitor (electrolytic capacitor) at the output of the control gear.
If, for example, the one or more converters 101, 102, 103 do not have a communication interface (e.g. DALI) , based on the values recorded by the lighting sensor 108, the operating status of the LED can still be recorded via the backend system unit 108 and, thus, responded.
If, for example, the one or more converters 101, 102, 103 have a communication interface (e.g., DALI) , there can be a direct connection to the backend system unit 107. The lighting sensor 107 can carry out evaluations in addition to the existing diagnostic data of the one or more converters 101, 102, 103.
Alternatively or additionally, the one or more converters 101, 102, 103 can comprise a wireless communication interface and a RE interface 109 can be assigned to the backend system unit 107.
The lighting sensor 107 can be configured to detect the light output in a spatially resolved manner with respect to the plurality of light sources 104, 105, 106 assigned to the different converters 101, 102, 103. For example, the lighting sensor 108 can be implemented by a camera, so that the lighting sensor, then, can be configured to send either the light power signal from different light sources 104, 105, 106, or the evaluation of the ripple, or the evaluation of an exceeding of predetermined threshold values by the ripple, to the backend system unit 107.
Furthermore, if there are signs of aging (e.g., reduction in the LED light output) , the current LED light level can be corrected back to the initial value (current level adjustment or voltage adjustment for "constant voltage" devices) . This advantageously ensures a homogeneous light level with different light sources (aging) .
Furthermore, the backend system unit 107 can send control signals to the one or more converters 101, 102, 103, if an excessive low-frequency (LF) ripple was detected in their light output. The operation of the assigned converters 101, 102, 103 can, thus, be changed in such a way that, for example, the effect of the ripple in the overall lighting system is reduced, for example, by dimming or changing the operating mode of the one or more converters 101, 102, 103.
Fig. 2 shows a schematic representation of a method 200 for detecting a ripple in a light output of one or more LED based lighting means 104, 105, 106 driven by one or more converters 101, 102, 103, the ripple being produced by degradation effects of electronic components of the one or more converters 101, 102,103, according to an embodiment.
The method comprises the steps of: sensing 201 the light output of the LED based lighting means 104 , 105 , 106 ; and analyzing 202 , in a backend system unit 107 , whether a ripple amplitude in the sensed light output is higher than a threshold value .
All features of all embodiments described, shown and/or claimed herein can be combined with each other .
While various embodiments of the present invention have been described above , it should be understood that they have been presented by way of example only and not limitation . Numerous changes to the disclosed embodiments can be made in accordance with the disclosure herein without departing from the scope of the invention . Thus , the breadth and scope of the present invention should not be limited by any of the above-described embodiments . Rather, the scope of the invention should be defined in accordance with the following claims and their equivalence .
Although the invention has been illustrated and described with respect to one or more implementations , equivalent alternations and modi fications will occur to those skilled in the art upon the reading of the understanding of the speci fication and the annexed drawings . In addition, while a particular feature of the invention may have been disclosed with respect to only of the several implementations , such features may be combined with one or more other features of the other implementations as may be desired .

Claims

Amended Claims
1. Lighting system (100) , comprising: one or more converters (101, 102, 103) for driving LED lighting means, one or more LED based lighting means (104, 105, 106) driven by the one or more converters (101, 102, 103) ; a backend system unit (107) for the lighting system (100) , and a lighting sensor (108) arranged for detecting light emitted by the one or more lighting means (104, 105, 106) and arranged for issuing a signal to said backend system unit (107) , the backend system unit (107) being configured to analyze the signal supplied by the sensor (108) in order to detect whether one or more characteristic ( s ) of the light emitted by the one or more lighting means (104, 105, 106) is/are within preset ranges, wherein the one or more characteristic ( s ) comprise a low-frequency ripple being produced by degradation effects of electronic components of the one or more converters (101, 102,103) .
2. The lighting system (100) of claim 1, wherein the backend system unit (107) is connected to the one or more converters (101, 102, 103) via a wired or wireless control channel.
3. The lighting system (100) of claim 1 or 2, wherein the backend system unit (107) is configured to modify an operation of the one or more converters (101, 102, 103) , if the characteristic ( s ) is/are outside the preset ranges.
4. The lighting system (101) of any one of the preceding claims, wherein the lighting system (100) comprises an electrolytic capacitor and the backend system unit (107) is configured to detect the low-frequency ripple produced by a deterioration of the electrolytic capacitor.
5. The lighting system (100) of any one of the preceding claims, wherein the one or more converters (101, 102, 103) comprise a communication interface, e.g., a DALI interface.
6. The lighting system (100) of any one of the preceding claims, wherein the lighting system (100) further comprises a RE communication (109) interface associated to the backend system unit (107) .
7. The lighting system (100) of any one of the preceding claims, wherein the lighting sensor (108) comprises a camera.
8. The lighting system (100) of claim 7, wherein the camera sensor is arranged to detect light of one or more lighting means (104, 105, 106) driven by the one or more converters
(101, 102, 103) .
9. Luminaire comprising a lighting system (100) according to any one of the claims 1 to 8.
10. Method (200) for detecting a ripple in a light output of one or more LED based lighting means (104, 105, 106) driven by one or more converters (101, 102,103) , the ripple being produced by degradation effects of electronic components of the one or more converters (101, 102,103) , comprising: sensing (201) the light output of the one or more LED based lighting means (104, 105, 106) ; and analyzing (202) , in a backend system unit (107) , whether a ripple amplitude in the sensed light output is higher than a threshold value.
11. The method (200) of claim 10, further comprising the step of : modifying, by the backend system unit (107) , the light output for a given nominal light output value of the one or more converters (101, 102, 103) .
12. The method (200) of claim 10 or 11, wherein the method (200) further comprises the step of: sending a signal to the one or more converters (101, 102, 103) , by the backend system unit (107) , if the ripple amplitude in the sensed light output is higher than the threshold value.
13. The method (200) of any one of the preceding claims 10 to
12, wherein the electronic components of the one or more converters (101, 102, 103) comprise an electrolytic capacitor.
14. The method (200) of claim 13, wherein the method (200) further comprises: detecting a low-frequency ripple produced by a deterioration of the electrolytic capacitor.
15. Use of a sensor for detecting low frequency ripple, the ripple being produced by degradation effects of electronic components of one or more converters (101, 102,103) for driving one or more LED lighting means (104, 105, 106) .
EP22835400.7A 2021-12-21 2022-12-14 Lighting system Pending EP4430921A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP21216261.4A EP4203618A1 (en) 2021-12-21 2021-12-21 Lighting system
PCT/EP2022/085762 WO2023117608A1 (en) 2021-12-21 2022-12-14 Lighting system

Publications (1)

Publication Number Publication Date
EP4430921A1 true EP4430921A1 (en) 2024-09-18

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EP21216261.4A Withdrawn EP4203618A1 (en) 2021-12-21 2021-12-21 Lighting system
EP22835400.7A Pending EP4430921A1 (en) 2021-12-21 2022-12-14 Lighting system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP21216261.4A Withdrawn EP4203618A1 (en) 2021-12-21 2021-12-21 Lighting system

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Country Link
EP (2) EP4203618A1 (en)
WO (1) WO2023117608A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101731023A (en) * 2007-05-16 2010-06-09 托尼·迈耶 Constant light output illuminator system
EP2607238B1 (en) * 2011-12-19 2014-08-20 Goodrich Lighting Systems GmbH Anti-collision aircraft light
AT13441U1 (en) * 2011-12-23 2013-12-15 Tridonic Gmbh & Co Kg OPERATOR WITH POWER FACTOR CORRECTION
US10136481B2 (en) * 2013-06-26 2018-11-20 Dnci Co., Ltd. Lighting lamp system and power distributor used for lighting lamp system
EP2903395B1 (en) * 2014-01-30 2017-12-27 Helvar Oy Ab Driving a light source
US10914630B2 (en) * 2016-03-02 2021-02-09 Signify Holding B.V. Method for determining contribution and orientation of light sources at a predetermined measurement point
CN112567891B (en) * 2018-08-17 2024-04-05 昕诺飞控股有限公司 LED driving circuit

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Publication number Publication date
WO2023117608A1 (en) 2023-06-29
EP4203618A1 (en) 2023-06-28

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