EP2871917A1 - System for supplying one or more LED lighting modules, related lighting unit and related supply method - Google Patents

Abstract

This system (8) for supplying one or more light-emitting diode lighting modules (6a, 6b, 6c) comprises a power supply (14) capable of being connected to the or each lighting module (6a, 6b). , 6c) via an electrical connection (16a, 16b, 16c) and a device (22) for detecting a direction of connection of the or each lighting module (6a, 6b, 6c). The detection device (22) comprises, for the or each lighting module, means (50) for injecting a current setpoint, first means (52) for comparing with a first voltage threshold of a measured voltage on the corresponding electrical connection (16a, 16b, 16c) following the injection of the setpoint and means (54) for reversing the polarity of the lighting module (6a, 6b, 6c) when the measured voltage on the corresponding electrical connection (16a, 16b, 16c) is greater than or equal to the first voltage threshold. When the voltage measured on the corresponding electrical connection (16a, 16b, 16c) is greater than or equal to the first voltage threshold for the forward and reverse polarities of the lighting module (6a, 6b, 6c), the first comparison means ( 52) are adapted to increment, by a reference value, the first voltage threshold for one or more comparisons of said voltage with the first voltage threshold.

Description

The present invention relates to a power supply system for one or more light-emitting diode lighting modules, a light-emitting diode lighting assembly comprising one or more lighting modules and such a power supply system, and a method of supplying the lighting module (s) with such a power supply system.

The or each lighting module comprises at least one light emitting diode and is adapted to be polarized in a direct polarity or in a reverse polarity according to its direction of connection to the power system. The light emitting diode (s) are forward biased for the direct polarity of the illumination module, and respectively in reverse for the reverse polarity of the illumination module.

In the field of power supply of light-emitting diode lighting modules, it is known to use power supply systems that make it possible to group together in one and the same housing several power supply connections of a plurality of lighting modules. . The power supply of the lighting modules is thus centralized and the connection of the lighting modules to the power supply system is simplified. However, when installing such power supply systems, it is generally necessary for an operator to know and respect the polarity of the light emitting diode (s) of the lighting modules in order to connect them to the power supply system. In addition, each lighting module must be connected to a predetermined power supply connection. In addition, the power required to power the lighting modules must be known and allocated to the corresponding power supply connections. It therefore appears that such power supply systems light emitting diode modules are complex to implement, especially when the number of lighting modules is high.

In addition, it is known from the document EP-A1-2 464 198 a power supply system for one or more light-emitting diode lighting modules for connecting the lighting module (s) to the power supply system, regardless of the polarity of the light-emitting diode (s). Indeed, this power supply system comprises means for detecting the direction of connection of the lighting module or modules, making it possible to determine the direction of the current to be delivered to the or each lighting module, in order to polarize its diode (s). electroluminescent in the forward direction. In such a system, to detect the direction of connection, a current pulse is transmitted to the corresponding lighting module so as to flow in a first direction and then in a second direction through this module. However, such a system is capable of generating a risk of destruction of the said light emitting diode (s) and therefore of the corresponding lighting module. This risk is even greater with organic light-emitting diodes (OLEDs), which are particularly fragile and sensitive to exceedances of their nominal current and voltage values.

The object of the invention is therefore to propose a power supply system for one or more lighting modules whose installation is easy to perform and for simplifying the connection of the lighting module (s) to the power supply system. , without risk of destruction of the lighting module or modules.

• une alimentation électrique propre à être connectée au ou à chaque module d'éclairage via une liaison électrique pour le ou chaque module d'éclairage,
• un premier dispositif de mesure, sur la ou chaque liaison électrique, d'une tension délivrée, au module d'éclairage correspondant et un deuxième dispositif de mesure, sur la ou chaque liaison électrique, d'un courant délivré au module d'éclairage correspondant,
• un dispositif de détection d'un sens de branchement du ou de chaque module d'éclairage comprenant, pour le ou chaque module d'éclairage, des moyens d'injection d'une consigne de courant sur la liaison électrique correspondante, des premiers moyens de comparaison avec un premier seuil de tension de la tension mesurée sur la liaison électrique correspondante suite à l'injection de la consigne et des moyens d'inversion de la polarité du module d'éclairage lorsque la tension mesurée sur la liaison électrique correspondante est supérieure ou égale au premier seuil de tension.

For this purpose, the subject of the invention is a system for supplying one or more light-emitting diode lighting modules, the or each lighting module comprising at least one light-emitting diode and being able to be polarized according to its direction. for direct polarity or reverse polarity connection, the light-emitting diode (s) being forward biased, for the direct polarity of the illumination module and respectively in reverse, for the reverse polarity of the illumination module,
the system comprising:

• a clean power supply to be connected to the or each lighting module via an electrical connection for the or each lighting module,
• a first measuring device, on the or each electrical connection, of a voltage delivered, to the corresponding lighting module and a second measuring device, on the or each electrical connection, of a current delivered to the corresponding lighting module ,
• a device for detecting a direction of connection of the or each lighting module comprising, for the or each lighting module, means for injecting a current setpoint on the corresponding electrical connection, first means for comparison with a first voltage threshold of the voltage measured on the corresponding electrical connection following the injection of the setpoint and the means for inverting the polarity of the lighting module when the voltage measured on the corresponding electrical connection is greater or equal to the first voltage threshold.

According to the invention, the voltage measured on the corresponding electrical connection is greater than or equal to the first voltage threshold for the polarities direct and reverse lighting module, the first comparison means are adapted to increment, a reference value, the first voltage threshold for one or more comparisons of said voltage with the first voltage threshold.

Thanks to the invention, when detecting the direction of connection of the or each lighting module, the voltage delivered on the corresponding electrical connection is measured, and the direction of the current flowing through the lighting module is reversed when the measured voltage exceeds the first voltage threshold. The power supply system thus makes it possible to limit the voltage at the terminals of the or each lighting module when detecting the direction of connection of the or each lighting module, and thus to protect the or each lighting module against any destruction due to the application of a voltage too high at its terminals, especially when the light emitting diodes are reverse biased.

• le dispositif de détection comprend, pour le ou chaque module d'éclairage, des deuxièmes moyens de comparaison avec un seuil de courant de l'intensité mesurée sur la liaison électrique correspondante, les deuxièmes moyens de comparaison étant propres à détecter la polarité directe du module d'éclairage lorsque l'intensité mesurée est supérieure au seuil de courant ;
• pour le ou chaque module d'éclairage, les moyens d'injection sont propres à chaque changement de polarité du module d'éclairage à injecter la consigne de courant pour faire varier de manière croissante la tension délivrée au module d'éclairage, entre un deuxième seuil de tension et une tension maximale, la valeur du premier seuil de tension étant comprise entre celle du deuxième seuil de tension et celle de la tension maximale ;
• le dispositif de détection comprend des moyens de mémorisation pour le ou chaque module d'éclairage, d'une valeur de la tension mesurée par le premier dispositif de mesure, lorsque l'intensité du courant mesurée par le deuxième dispositif de mesure est supérieure au seuil de courant, la valeur mémorisée correspondant à une tension minimale de fonctionnement du module d'éclairage correspondant ;

According to other aspects of the invention, the supply system comprises one or more of the following features, taken alone or in any technically permissible combination:

• the detection device comprises, for the or each lighting module, second comparison means with a current threshold of the intensity measured on the corresponding electrical connection, the second comparison means being able to detect the direct polarity of the module lighting when the measured intensity is above the current threshold;
• for the or each lighting module, the injection means are adapted to each change of polarity of the lighting module to inject the current setpoint to vary increasingly the voltage delivered to the lighting module, between a second voltage threshold and a maximum voltage, the value of the first voltage threshold being between that of the second voltage threshold and that of the maximum voltage;
• the detection device comprises storage means for the or each lighting module, a value of the voltage measured by the first measuring device, when the intensity of the current measured by the second measuring device is greater than the threshold current, the stored value corresponding to a minimum operating voltage of the corresponding lighting module;

Another subject of the invention is a light-emitting diode lighting assembly comprising one or more light-emitting diode lighting modules and a power supply system as defined above.

• l'ensemble comprend plusieurs modules d'éclairage, alors que le système d'alimentation comprend un organe de commande de l'alimentation électrique propre à alimenter successivement chaque liaison électrique, l'organe de commande comprenant des moyens d'identification de la liaison électrique associée à chaque module d'éclairage.
• l'ensemble comprend en outre un module de configuration du système d'alimentation, le module de configuration comprenant des moyens de sauvegarde d'un fichier de configuration, le fichier de configuration comportant, pour chaque module d'éclairage, des paramètres de configuration, alors que suite à l'identification de chaque liaison électrique, le module de configuration est propre à télécharger dans l'organe de commande les paramètres de configuration et à les associer à la liaison électrique correspondante ;
• le système d'alimentation comprend, pour chaque module d'éclairage, des premiers moyens de calcul d'une puissance instantanée consommée, alors que les premiers moyens de calcul sont propres à transmettre à l'organe de commande les puissances instantanées calculées pour chaque liaison électrique, et alors que l'organe de commande comprend des deuxièmes moyens de calculs d'une puissance disponible restante en fonction des puissances instantanées consommées, et des moyens d'allocation de puissance aux différentes liaisons électriques.

According to other advantageous aspects of the invention, the assembly further comprises one or more of the following characteristics, taken separately or in any technically permissible combination:

• the assembly comprises several lighting modules, while the power system comprises a power supply control member adapted to power each successive electrical connection, the control member comprising means for identifying the electrical connection associated with each lighting module.
• the assembly further comprises a configuration module of the power system, the configuration module comprising means for saving a configuration file, the configuration file comprising, for each lighting module, configuration parameters, whereas following the identification of each electrical connection, the configuration module is able to download the configuration parameters into the control device and to associate them with the corresponding electrical connection;
• the power supply system comprises, for each lighting module, first means for calculating a consumed instantaneous power, whereas the first calculation means are able to transmit to the controller the instantaneous powers calculated for each connection. electrical, and while the controller comprises second means for calculating a remaining available power according to the instantaneous power consumed, and power allocation means to the various electrical connections.

The invention also relates to a method of supplying one or more light-emitting diode lighting modules by a power supply system, the or each lighting module comprising at least one light-emitting diode and being able to be polarized. according to a direct polarity or an inverse polarity according to its direction of connection, the light-emitting diode (s) being forward biased for the direct polarity of the lighting module, and respectively in reverse for the reverse polarity of the lighting module, the system comprising, a clean power supply to be connected to the or each lighting module via an electrical connection for the or each lighting module, a first measuring device, on the or each electrical connection, a voltage delivered to the module corresponding lighting device, a second measuring device, on the or each electrical connection, of a current delivered to the module of corresponding lighting, and a device for detecting a direction of connection of the or each lighting module,

• a) l'injection, par le dispositif de détection, d'une consigne de courant sur la liaison électrique correspondante,
• b) la mesure de la tension délivrée au module d'éclairage,
• c) la comparaison avec un premier seuil de tension de la tension mesurée, lors de l'étape de mesure,
• d) l'inversion de la polarité du module d'éclairage correspondant, lorsque la tension mesurée sur la liaison électrique correspondante est supérieure ou égale au premier seuil de tension, et le retour à l'étape d'injection.

the method comprising, for the or each lighting module, the following steps:

• a) the injection, by the detection device, of a current command on the corresponding electrical connection,
• b) measuring the voltage delivered to the lighting module,
• c) the comparison with a first voltage threshold of the measured voltage, during the measuring step,
• d) the reversal of the polarity of the corresponding lighting module, when the voltage measured on the corresponding electrical connection is greater than or equal to the first voltage threshold, and the return to the injection step.

• - e) lorsque ladite tension est supérieure ou égale au premier seuil de tension pour les polarités directe et inverse du module d'éclairage, l'incrémentation du premier seuil de tension d'une valeur de référence, pour une ou des prochaines comparaisons de la tension mesurée sur la liaison électrique correspondante avec le premier seuil de tension.

According to the invention, the method further comprises, for the or each lighting module, the following step:

• e) when said voltage is greater than or equal to the first voltage threshold for the forward and reverse polarities of the lighting module, the incrementation of the first voltage threshold by a reference value, for one or more comparisons of the voltage measured on the corresponding electrical connection with the first voltage threshold.

• le procédé comprend, précédemment à l'étape de mesure de la tension, pour le ou chaque module d'éclairage, les étapes suivantes :
  • a1) la mesure du courant circulant dans la liaison électrique correspondante,
  • a2) la comparaison de l'intensité mesurée dans la liaison électrique correspondante avec un seuil de courant,
  et alors que suite à l'étape de comparaison de l'intensité, si l'intensité mesurée est supérieure ou égale au seuil de courant le procédé comprend en outre l'étape suivante :
  • a3) la détection de la polarité directe du module d'éclairage ;
• lors de l'étape d'injection, la consigne de courant est injectée pour faire varier de manière croissante la tension délivrée au module d'éclairage, entre un deuxième seuil de tension et une tension maximale, la valeur du premier seuil de tension étant comprise entre celle du deuxième seuil de tension et celle de la tension maximale.

According to other advantageous aspects of the invention, the method further comprises one or more of the following features, taken alone or in any technically permissible combination:

• the method comprises, previously in the step of measuring the voltage, for the or each lighting module, the following steps:
  • a1) measuring the current flowing in the corresponding electrical connection,
  • a2) comparing the intensity measured in the corresponding electrical connection with a current threshold,
  and whereas following the step of comparing the intensity, if the measured intensity is greater than or equal to the current threshold, the method further comprises the following step:
  • a3) detecting the direct polarity of the lighting module;
• during the injection step, the current setpoint is injected to increase the variation of the voltage delivered to the lighting module, between a second voltage threshold and a maximum voltage, the value of the first voltage threshold being included between that of the second voltage threshold and that of the maximum voltage.

• la figure 1 est une représentation schématique d'un ensemble d'éclairage à diodes électroluminescentes conforme à l'invention, l'ensemble comportant un premier, un deuxième et un troisième modules d'éclairage à diodes électroluminescentes, et un système d'alimentation des modules d'éclairage via trois liaisons électriques ;
• la figure 2 est une représentation très schématique d'une liaison électrique du système d'alimentation de la figure 1, à laquelle est connecté le premier module d'éclairage à diodes électroluminescentes ;
• la figure 3 est un organigramme d'un procédé d'alimentation des modules d'éclairage de la figure 1 selon un premier mode de réalisation de l'invention ; et
• les figures 4 et 5 sont des vues analogues à celle de la figure 3 selon un deuxième et respectivement un troisième modes de réalisation de l'invention.

The invention will be better understood and other advantages thereof will appear more clearly in the light of the description which follows, given solely by way of nonlimiting example, and with reference to the drawings in which:

• the figure 1 is a schematic representation of a light-emitting diode lighting assembly according to the invention, the assembly comprising a first, a second and a third light-emitting diode lighting modules, and a module power supply system; lighting via three electrical connections;
• the figure 2 is a very schematic representation of an electrical connection of the power system of the figure 1 , to which the first light emitting diode lighting module is connected;
• the figure 3 is a flowchart of a method of powering the lighting modules of the figure 1 according to a first embodiment of the invention; and
• the figures 4 and 5 are views similar to that of the figure 3 according to a second and a third embodiment of the invention.

On the figure 1 a light-emitting diode lighting assembly 4 comprises a first 6a, a second 6b and a third 6c light-emitting diode lighting modules, a power supply system 8 of the lighting modules 6a, 6b, 6c and a module 10 power system configuration 8.

The lighting modules 6a, 6b, 6c each comprise one or more light-emitting diodes 12 adapted to be polarized in a direct polarity or in an inverse polarity according to their direction of connection. More specifically, on the figure 1 the first lighting module 6a comprises a light-emitting diode 12 connected in a first direction, the second lighting module 6b comprises two light-emitting diodes 12 connected in series and connected in the first direction and the third lighting module 6c comprises a light-emitting diode 12 connected in a second direction, opposite the first direction. Each lighting module 6a, 6b, 6c is in a direct polarity when the corresponding light-emitting diode (s) 12 are forward-biased, respectively in reverse polarity when the corresponding light-emitting diode (s) 12 are reverse-biased.

The power supply system 8 comprises a power supply source 14 adapted to be connected to each lighting module 6a, 6b, 6c via a respective electrical connection 16a, 16b, 16c. The power supply system 8 also comprises, for each lighting module 6a, 6b, 6c, a first device 18 for measuring a voltage on the corresponding electrical connection 16a, 16b, 16c, a second measuring device 20, on the corresponding electrical connection 16a, 16b, 16c, the intensity of a current delivered to the lighting module 6a, 6b, 6c and a device 22 for detecting a direction of connection of the lighting module 6a, 6b , 6c.

The power supply system 8 comprises a member 24 for controlling the power supply source 14 and, for each electrical connection 16a, 16b, 16c, a first software 28 for calculating an instantaneous power consumed by each lighting module 6a, 6b, 6c. The power supply system 8 comprises, for each electrical connection 16a, 16b, 16c, a control module 30 of an electric power delivered on each electrical connection 16a, 16b, 16c and a device 32 for allocating polarity to the power module. 6a, 6b, 6c corresponding lighting.

The power supply system 8 also comprises a first radio transceiver 34 and a first radio antenna 36.

The configuration module 10 comprises a second radio transceiver 38, a second radio antenna 40 and a processing unit 42.

Each electrical connection 16a, 16b, 16c is able to deliver, thanks to the power supply source 14, a current and a voltage to the lighting module 6a, 6b, 6c corresponding.

Each first measuring device 18 is able to measure, on the corresponding electrical link 16a, 16b, 16c, the voltage delivered to the corresponding lighting module 6a, 6b, 6c. Each first measuring device 18 comprises, for example, as shown in FIG. figure 2 two resistors R1, R2 connected in parallel with the corresponding lighting module 6a, 6b, 6c, the measured voltage being recovered between the two resistors R1, R2 and transmitted to the detection device 22 and to the first calculation software 28.

Each second measuring device 20 is able to measure, on the corresponding electrical link 16a, 16b, 16c, the current delivered to the corresponding lighting module 6a, 6b, 6c. Each second measuring device 20 comprises, for example, a shunt 48 capable of measuring the intensity of the current flowing through it and transmitting the measured intensity to the first calculation software 28 and to the detection device 22.

Each detection device 22 comprises means 50 for injecting a current setpoint onto the corresponding electrical link 16a, 16b, 16c. Each detection device 22 comprises a first comparison software 52, with a first voltage threshold S1, of the voltage measured by the first device 18 on the corresponding electrical link 16a, 16b, 16c, following the injection of the setpoint by the injection means 50. The detection device 22 comprises means 54 for reversing the polarity of the corresponding lighting module 6a, 6b, 6c, when the voltage measured on the corresponding electrical connection 16a, 16b, 16c is greater or equal to the first voltage threshold S1. The first voltage threshold S1 is, for example, between 3 volts (V) and 50 V.

Each detection device 22 also comprises, for the corresponding lighting module 6a, 6b, 6c, a second software 58 for comparing the intensity measured on the corresponding electrical connection 16a, 16b, 16c with a current threshold A1. The current threshold A1 is, for example, between 20 mA and 50 mA. More precisely, the current threshold A1 is, for example, equal to the value of the current setpoint.

Each detection device 22 comprises, for the corresponding lighting module 6a, 6b, 6c, a software 60 for storing a value of the voltage measured by the corresponding first measuring device 18, when the intensity measured by the second corresponding measuring device 20 is greater than the current threshold A1. The stored value corresponds to a minimum operating voltage of the corresponding lighting module 6a, 6b, 6c.

The control member 24 is adapted to control the supply of each electrical connection 16a, 16b, 16c successively. The control member 24 comprises a software 64 for identifying the electrical connection 16a, 16b, 16c associated with each lighting module 6a, 6b, 6c and a first software 66 for downloading configuration parameters to the control module Corresponding. The configuration parameters correspond, for example, to a nominal voltage and a nominal operating current of each lighting module 6a, 6b, 6c, ie to a current and a voltage corresponding to an operation. optimal of said lighting module 6a, 6b, 6c.

The controller 24 also includes a second software 68 for calculating the remaining available power as a function of the instantaneous powers consumed by each lighting module 6a, 6b, 6c and calculated by each first calculation software 28. The second software of FIG. calculation 68 is also adapted to calculate a maximum power to be delivered by the power supply 14. The control member 24 comprises a software 70 power allocation to the various electrical connections, 16a, 16b, 16c is to the different lighting modules 6a, 6b, 6c.

Each control module 30 is able to distribute the power allocated by the allocation software 70 to the corresponding electrical link 16a, 16b, 16c. Each control module 30 is also adapted to be controlled via the injection means 50 of the current setpoint, in order to deliver said current setpoint to the corresponding lighting module 6a, 6b, 6c.

Each control module 30 comprises, as shown in FIG. figure 2 , two switches 74 for controlling the current and the voltage delivered by the power supply 14 on the corresponding electrical link 16a, a diode D1 for protection against overvoltages, a coil L1 capable of supplying power to the corresponding lighting module 6a and a capacitor C1 connected in parallel with the lighting module 6a.

The polarity allocation device 32 is clean, according to the connection direction detected by the detection device 22, to fix the polarity of the corresponding lighting module 6a, 6b, 6c, so that the latter is always in a polarity direct and that its light emitting diode (s) 12 illuminate around them.

The first transceiver 34 and the first antenna 36 are able to exchange data with the second radio transceiver 38 and the second radio antenna 40. More specifically, the configuration module 10 and the power supply system 8 are suitable for communicate via the first 36 and second 40 radio antennas and the first 34 and second 38 radio transceivers.

The processing unit 42 comprises a software 76 for saving a configuration file comprising for each lighting module 6a, 6b, 6c the configuration parameters. The processing unit 42 also includes a second download software 78 that can be downloaded to the control member 24, when the control member 24 controls the power supply successively for each electrical connection 16a. , 16b, 16c, the configuration parameters corresponding to the lighting module 6a, 6b, 6c whose light emitting diode (s) 12 are fed.

The injection means 50 are clean, at each polarity change of the corresponding lighting module 6a, 6b, 6c, to inject the current setpoint, to increase the voltage delivered to the lighting module 6a, 6b, 6c corresponding. More precisely, the voltage varies between a second voltage threshold S2 and a maximum voltage Umax. The value of the first voltage threshold S1 is between that of the second voltage threshold S2 and that of the maximum voltage Umax. The second threshold of voltage S2 is for example equal to 0.3 V, and the maximum voltage Umax is for example equal to 50V. More precisely, as visible on the figure 2 , the injection means 50 are adapted to vary the voltage across the capacitor C1, and thus to increase the voltage delivered to the corresponding lighting module 6a, until this voltage is sufficient to supply the light emitting diode 12 corresponding value or that the first voltage threshold S1 is reached.

Each first comparison software 52 is clean, when the voltage measured on the corresponding electrical connection 16a, 16b, 16c is greater than or equal to the first voltage threshold S1 for the forward and reverse polarities of the corresponding lighting module 6a, 6b, 6c. , to increment by a reference value the first voltage threshold S1 for the next comparison or comparisons of the measured voltage with the first voltage threshold S1.

The inverting means 54 comprise, for example, four controllable switches 56a, 56b, 56c, 56d, which are adapted according to their position to modify the direction of a current flowing through the corresponding lighting module 6a, 6b, 6c, as shown in FIG. figure 2 . More generally, the inversion means 54 are as shown in FIG. figure 3 and in paragraph [0025] of the patent application EP-A1-2 464 198 .

The identification software 64 is able to identify the electrical connection 16a, 16b, 16c associated with each lighting module 6a, 6b, 6c. More precisely, when successively controlling the supply of each electrical connection 16a, 16b, 16c, the identification software 64 is able to identify the electrical connection 16a, 16b, 16c supplied with electrical energy.

The download software 66 is able to download to the control module 30 corresponding to the electrical connection 16a, 16b, 16c identified by the identification software, the configuration parameters downloaded to the controller 24 via the second software of download 78.

The second calculation software 68 calculates the remaining available power as a function of the instantaneous power consumed, calculated by the first calculation software 28, and the maximum power that the power supply 14 is capable of supplying.

The allocation software 70 is adapted to allocate to each lighting module 6a, 6b, 6c an electric power. The allocation software 70 is for example suitable for implementing a strategy for allocating and distributing the electrical power delivered by the power supply 14 between the lighting modules 6a, 6b, 6c. Said allocation and distribution strategy is, for example, stored by the control member 24.

In addition, as part of an installation and a successive connection of the lighting modules 6a, 6b, 6c to the supply system 8, that is to say the electrical connections 16a, 16b, 16c, the second calculation software 68 is able to calculate the remaining available power following each connection of one of the lighting modules 6a, 6b, 6c to the supply system 8. Thus, the control member 24 is able to transmit the configuration module 10 the remaining available power, and a display member, not shown, allows an operator, following each connection of one of the lighting modules 6a, 6b, 6c to the electrical connection 16a, 16b , 16c corresponding, to know the remaining available power and define the power to allocate to the next lighting modules 6a, 6b, 6c to connect to the electrical connections 16a, 16b, 16c.

When the controller 24 controls the supply of each electrical connection 16a, 16b, 16c successively, the operator is able to identify the lighting module 6a, 6b, 6c for which the light emitting diode (s) are powered and illuminate around them. The second download software 78 is then able to transmit to the first download software 66 the configuration parameters corresponding to the lighting module 6a, 6b, 6c identified by the operator.

Three embodiments of a method for supplying lighting modules 6a, 6b, 6c through the power supply system 8 will be presented hereinafter.

The feeding process presented at figure 3 is in accordance with a first embodiment and is applicable to each lighting module 6a, 6b, 6c. The power supply method, according to the first embodiment, comprises a first start step 194, that is to say launching an algorithm corresponding to the method and applying the algorithm to the lighting module. corresponding 6a, 6b, 6c.

Then, during a polarity initialization step 196, the polarity of the corresponding lighting module 6a, 6b 6c is fixed, and the corresponding lighting module 6a, 6b, 6c has a first polarity, called the default polarity . The default polarity corresponds to a predetermined state of the switches 56a, 56b, 56c, 56d. More specifically, the default polarity corresponds either to a closed position of the switches 56a and 56d and to an open position of the switches 56b, 56c, or to a closed position of the switches 56b, 56c and to an open position of the switches 56a, 56d.

Then, during a step 198, the value of the first voltage threshold S1 is initialized. More precisely, the value of the first voltage threshold S1 is for example set at 5V.

Then, the method comprises a step 200 consisting of the injection, by the detection device 22 and more precisely by the injection means 50, of the current setpoint on the corresponding electrical link 16a, 16b, 16c. The current setpoint is injected in order to increase the voltage supplied to the corresponding lighting module 6a, 6b, 6c between the second voltage threshold S2 and the maximum voltage Umax.

Following the injection step 200, the intensity of the current flowing through the corresponding second measuring device 20 is measured during a step 202.

During a next step 204, the intensity measured on the corresponding electrical connection is compared with the current threshold A1.

Then, if the intensity measured during the step 204 is lower than the current threshold A1, the first measuring device 18 measures, during a step 206, the voltage delivered to the corresponding lighting module 6a, 6b, 6c. Following step 206, the measured voltage is compared with the first voltage threshold S1 during a step 208.

If, the voltage measured during step 208 is lower than the first voltage threshold S1, the injection step 200 is repeated.

If, during step 208, the measured voltage is greater than or equal to the first voltage threshold S1, then, during a step 210, the inverting means 54 control the inversion of the polarity of the module. lighting 6a, 6b, 6c corresponding.

In addition, following step 210, the detection device 22 verifies, during a step 212, whether the voltage measured by the corresponding first measurement device 18 is greater than or equal to the first voltage threshold S1 for the polarities direct and inverse of the lighting module 6a, 6b, 6c.

If the voltage measured by the corresponding first measuring device 18 is lower than the first voltage threshold S1 for one of the forward and reverse polarities of the lighting module 6a, 6b, 6c, then the injection step 200 is repeated. .

If the voltage measured by the first corresponding measuring device 18 is greater than or equal to the first voltage threshold S1 for both the forward polarity and the reverse polarity of the lighting module 6a, 6b, 6c, then, when a step 213, the first comparison software 52 increments the first voltage threshold S1 of the reference value, for the next comparison or comparisons made in step 208 for the corresponding lighting module 6a, 6b, 6c.

If, during step 204, the measured intensity is greater than or equal to the current threshold A1, during a step 214, the first measuring device 18 measures the voltage delivered to the lighting module 6a, 6b, Corresponding 6c and this value is stored by the storage software 60. Then, during a step 216, the branching direction, that is to say the direct polarity of the corresponding lighting module 6a, 6b, 6c, is detected. Indeed, a non-zero current and greater than the current threshold A1 passes through the corresponding lighting module 6a, 6b, 6c and its light emitting diode (s) 12 are powered and then illuminate around them.

Finally, following step 216, an end step 218, that is to say stopping the algorithm for the corresponding lighting module 6a, 6b, 6c, is performed.

Thus, the search for the connection direction of each lighting module 6a, 6b, 6c is carried out for the forward and reverse polarities while limiting, at the first voltage threshold S1, the voltage applied across the lighting modules 6a, 6b, 6c. This makes it possible to prevent the destruction of the light-emitting diode (s) 12 of each lighting module 6a, 6b, 6c, while looking for the direction of connection of each lighting module 6a, 6b, 6c. The power supply system 8 notably makes it possible to avoid the application of a voltage to each lighting module capable of leading to the destruction of its light-emitting diode (s). The incrementation of the first voltage threshold S1 with a step corresponding to the reference value makes it possible to increase the voltage applied to the lighting module 6a, 6b, 6c corresponding little by little, without risk of destruction of the lighting module 6a, 6b, 6c.

In addition, when following the incrementation step 213, the first incremented voltage threshold has a value greater than or equal to the maximum voltage, the search for the polarity is stopped, and the detection device 22 detects an open circuit. More specifically, the detection device 22 detects that no lighting module 6a, 6b, 6c is connected to the corresponding electrical link 16a, 16b, 16c.

In addition, during step 213, the value of the second voltage threshold S2 is also incremented by the reference value.

In addition, the detection device 22 performs, following the measurement steps 206, 214, a step, not shown, for comparing the measured voltage with a third voltage threshold S3. The third voltage threshold S3 is, for example, between 0.3 V and 2.5 V. Following this step of comparison with the third voltage threshold S3, if the measured voltage is lower than the third voltage threshold S3, then the detection device 22 detects an error and indicates to the operator, via the controller 24 and the configuration module 10, that it must change lighting module 6a, 6b, 6c corresponding.

In addition, if following the step of comparison with the third voltage threshold, the measured voltage is lower than the third voltage threshold S3 for both the forward polarity and the reverse polarity, then a short circuit is detected .

In addition, following the step of comparison with the third voltage threshold, the detection device 22 performs a step of comparing the measured voltage with a fourth voltage threshold S4, for example between 2.5 V and 3 V. If during the comparison step with the fourth voltage threshold S4, the measured voltage is between the third voltage threshold S3 and the fourth voltage threshold S4, then the presence in the lighting module 6a, 6b, 6c corresponding, a diode protection of light emitting diodes 12 against overvoltages is detected. In addition, if the measured voltage is between the third voltage threshold S3 and the fourth voltage threshold S4 for the forward and reverse polarity, then an error is detected and the detection device 22 indicates to the operator, via the control member and the configuration module 10, that the corresponding lighting module 6a, 6b, 6c must be changed.

According to the second embodiment of the feeding method, visible on the figure 4 the method comprises a first step 300 consisting of connecting the lighting modules 6a, 6b, 6c to each corresponding electrical link 16a, 16b, 16c. Then, during a step 302, the configuration file is stored in the configuration module 10.

Then, during a step 304, the control member 24 controls the power supply 14, in order to deliver electrical energy successively to each electrical connection 16a, 16b, 16c. In addition, each electrical connection 16a, 16b, 16c is supplied with the current setpoint and the minimum operating voltage is recorded in step 214.

Then, during a step 306, the position and the electrical connection 16a, 16b, 16c associated with the lighting module 6a, 6b, 6c corresponding are identified following the identification by the operator of the lighting module 6a, 6b, 6c whose light emitting diodes are powered and then illuminate around them. During the step 306, the identification means 66 identify the electrical connection that was fed during the step 304.

Then, during a step 308, the configuration parameters corresponding to the lighting module 6a, 6b, 6c identified by the operator are downloaded to the controller 24 from the second download software 78.

Then, during a step 310, the first download software 66 downloads on the electrical link 16a, 16b, 16c identified in step 306, and more precisely on the corresponding control module 30, the configuration parameters downloaded during step 308.

The second embodiment makes it possible to randomly connect each lighting module 6a, 6b, 6c to one of the electrical connections 16a, 16b, 16c. Indeed, thanks to the successive power supply of the different lighting modules, the identification software 64 and the first 66 and second 78 download software make it possible to know which lighting module 6a, 6b, 6c is associated with which electrical connection 16a, 16b, 16c, and download on the control module 30 of the corresponding electrical link 16a, 16b, 16c, the configuration parameters associated with the lighting module 6a, 6b, 6c corresponding.

In addition, the second embodiment allows the operator to check the position of each lighting module 6a, 6b, 6c in a room.

A third embodiment of the feeding process is presented to the figure 5 . In the third embodiment, a first step 400 consists of the recording by the control member 24 of the maximum power delivered by the power supply 14.

Then, during a subsequent step 402, the first 18 and second measuring devices 20 measure the voltage and the current on each electrical connection 16a, 16b, 16c.

During a step 404, each first calculation software 28 calculates the power consumed by each electrical connection 16a, 16b, 16c. Then, during a step 406, the second calculation software 68 determines the remaining available power as a function of the maximum power of the power supply 14 and the powers calculated in step 404.

Finally, during a step 408, the allocation software 70 allocates to each electrical link 16a, 16b, 16c the remaining available power calculated in step 406.

Thus, in the context of the installation and successive connection of lighting modules 6a, 6b, 6c to the various electrical connections 16a, 16b, 16c, the control member 24 indicates to the operator, via the configuration module 10, the remaining available power to be allocated to the electrical connections 16a, 16b, 16c still not connected to a lighting module 6a, 6b, 6c.

In another variant, the controller 24 stores allocation strategies including information on the power to be allocated to each electrical connection 16a, 16b, 16c, and applies, via the allocation software 70, said strategies.

In addition, the operator transmits, via the configuration module 10, a load shedding command associated with a lighting module 6a, 6b, 6c and an electrical connection 16a, 16b, 16c and the reduced allocation software 70. the power allocated to said electrical connection 16a, 16b, 16c and to allocate the remaining electrical power to the other electrical connections 16a, 16b, 16c.

Those skilled in the art will understand that the technical features of the embodiments described above are combinable with each other.

In addition, the power supply system 8 comprises a single detection device 22 and a unique first calculation software 28 capable respectively of detecting and calculating the instantaneous power consumed for each electrical connection 16a, 16b, 16c.

The third embodiment allows a dynamic allocation of the power to the various electrical connections 16a, 16b, 16c, and the determination, during the successive connection of the lighting modules 6a, 6b, 6c on the electrical connections 16a, 16b, 16c. , the remaining available power and therefore the type and nominal power of the lighting modules to be connected thereafter.

In addition, the fact of having a centralized allocation software 70 for all the electrical connections 16a, 16b, 16c makes it possible to calibrate each control module 30 and each electrical connection 16a, 16b, 16c, as a function of the power electrical power intended to be associated with it.

Finally, the third embodiment allows the management of a load shedding order of an electrical power, that is to say the management of a reduction in the power allocated to one of the electrical connections 16a, 16b, 16c.

In the first embodiment presented above, the reference value is, for example, equal to 5 V and the maximum voltage Umax is, for example, ten times greater than the reference value.

Claims (11)

System (8) for supplying one or more light-emitting diode lighting modules (6a, 6b, 6c), the or each lighting module comprising at least one light-emitting diode (12) and being able to be polarized according to its direction of connection in a direct polarity or in a reverse polarity, the light-emitting diode (s) (12) being forward-biased, for the direct polarity of the lighting module (6a, 6b, 6c) and respectively in reverse, for the reverse polarity of the lighting module (6a, 6b, 6c),
the system comprising: - a power supply (14) adapted to be connected to the or each lighting module (6a, 6b, 6c) via an electrical connection (16a, 16b, 16c) for the or each lighting module, a first measuring device (18) for measuring, on the or each electrical connection, a voltage delivered to the corresponding lighting module (6a, 6b, 6c) and a second measuring device (20) on the or each electrical connection, of a current delivered to the corresponding lighting module (6a, 6b, 6c), a device (22) for detecting a direction of connection of the or each lighting module (6a, 6b, 6c) comprising, for the or each lighting module, means (50) for injecting a current setpoint on the corresponding electrical connection (16a, 16b, 16c), first means (52) for comparison with a first voltage threshold (S1) of the voltage measured on the corresponding electrical connection (16a, 16b, 16c) following the injection of the setpoint and the means (54) for reversing the polarity of the lighting module (6a, 6b, 6c) when the voltage measured on the corresponding electrical connection (16a, 16b, 16c) is greater or equal to the first voltage threshold (S1), characterized in that when the voltage measured on the corresponding electrical connection (16a, 16b, 16c) is greater than or equal to the first voltage threshold (S1) for the forward and reverse polarities of the lighting module (6a, 6b, 6c) , the first comparison means (52) are able to increment, by a reference value, the first voltage threshold (S1) for one or more comparisons of said voltage with the first voltage threshold. System according to Claim 1, characterized in that the detection device (22) comprises, for the or each lighting module (6a, 6b, 6c), second means (58) for comparison with a current threshold (A1) of the intensity measured on the corresponding electrical connection (16a, 16b, 16c), the second comparison means (58) being able to detect the direct polarity of the module lighting (6a, 6b, 6c) when the measured intensity is greater than the current threshold (A1). System according to one of the preceding claims, characterized in that for the or each lighting module, the injection means (50) are adapted to each change of polarity of the lighting module (6a, 6b, 6c) to injecting the current setpoint in order to increase the variation of the voltage delivered to the lighting module (6a, 6b, 6c) between a second voltage threshold (S2) and a maximum voltage (Umax), the value of the first threshold of voltage (S1) being between that of the second voltage threshold (S2) and that of the maximum voltage (Umax). System according to one of the preceding claims, characterized in that the detection device (22) comprises storage means (60) for the or each lighting module (6a, 6b, 6c) with a value of voltage measured by the first measuring device (18), when the intensity of the current measured by the second measuring device (20) is greater than the current threshold (A1), the stored value corresponding to a minimum operating voltage of the module corresponding lighting. Light-emitting diode (4) lighting assembly (1) comprising one or more light-emitting diode (6a, 6b, 6c) lighting modules and a system (8) for powering the light source module (s) (6a, 6b, 6c) ), characterized in that the supply system (8) is according to one of the preceding claims. An assembly according to claim 5, characterized in that it comprises a plurality of lighting modules (6a, 6b, 6c), and in that the power supply system comprises a power supply control member (24) (14). ) capable of successively supplying each electrical connection (16a, 16b, 16c), the control member (24) comprising means (64) for identifying the electrical connection (16a, 16b, 16c) associated with each module of lighting (6a, 6b, 6c). An assembly according to claim 6, characterized in that it further comprises a power system configuration module (10) (8), the configuration module (10) comprising means (76) for saving a configuration file, the configuration file comprising, for each lighting module (6a, 6b, 6c), configuration parameters, and in that following the identification of each electrical connection (16a, 16b, 16c), the configuration module (10) is adapted to download into the control member (24) the configuration parameters and to associate them with the electrical connection (16a, 16b). , 16c). Assembly according to claim 6 or 7, characterized in that the power supply system (8) comprises, for each lighting module (6a, 6b, 6c), first means (28) for calculating an instantaneous power consumed , in that the first calculating means (28) are adapted to transmit to the control member (24) the instantaneous powers calculated for each electrical connection (16a, 16b, 16c), and in that the control member ( 24) comprises second means (68) for calculating a remaining available power as a function of the instantaneous power consumed, and means (70) for allocating power to the various electrical connections (16a, 16b, 16c). A method of supplying one or more light-emitting diode lighting modules (6a, 6b, 6c) with a power supply system (8), the or each lighting module (6a, 6b, 6c) comprising at least a light-emitting diode (12) and being adapted to be polarized in a direct polarity or in an inverse polarity according to its direction of connection, the light-emitting diode (s) (12) being forward biased for the direct polarity of the lighting module (6a , 6b, 6c), and respectively in reverse for the reverse polarity of the lighting module (6a, 6b, 6c), the system (8) comprising, a power supply (14) adapted to be connected to the or each module of lighting (6a, 6b, 6c) via an electrical connection (16a, 16b, 16c) for the or each lighting module (6a, 6b, 6c), a first measuring device (18), on the or each link electrical supply (16a, 16b, 16c) of a voltage delivered to the corresponding lighting module (6a, 6b, 6c). c), a second measuring device (20), on the or each electrical connection (16a, 16b, 16c), of a current supplied to the corresponding lighting module (6a, 6b, 6c), and a device (22); ) detecting a direction of connection of the or each lighting module (6a, 6b, 6c),
the method comprising, for the or each lighting module (6a, 6b, 6c), the following steps: a) the injection (200), by the detection device (22), of a current setpoint on the corresponding electrical connection, b) measuring (206) the voltage delivered to the lighting module, c) comparing (208) with a first voltage threshold (S1) of the measured voltage, during the measurement step (206), - d) the inversion (210) of the polarity of the corresponding lighting module (6a, 6b, 6c), when the voltage measured on the corresponding electrical connection (16a, 16b, 16c) is greater than or equal to the first threshold of voltage (S1), and the return to the injection step (200), characterized in that the method further comprises, for the or each lighting module, the following step: e) when said voltage is greater than or equal to the first voltage threshold (S1) for the forward and reverse polarities of the lighting module (6a, 6b, 6c), incrementing (213) of the first voltage threshold (S1 ) a reference value, for one or more comparisons of the voltage measured on the corresponding electrical connection (16a, 16b, 16c) with the first voltage threshold (S1). A method according to claim 9, characterized in that the method comprises, previously in step (206) of measuring the voltage, for the or each lighting module (6a, 6b, 6c), the following steps: a1) measuring (202) the current flowing in the corresponding electrical connection (16a, 16b, 16c), a2) comparing (204) the intensity measured in the corresponding electrical connection with a current threshold (A1), and in that after the intensity comparison step (204), if the measured intensity is greater than or equal to the current threshold (A1), the method further comprises the step of: - a3) the detection (216) of the direct polarity of the lighting module. Method according to Claim 9 or 10, characterized in that , during the injection step (200), the current setpoint is injected to increase the voltage supplied to the lighting module (6a, 6b, 6c), between a second voltage threshold (S2) and a maximum voltage (Umax), the value of the first voltage threshold (S1) being between that of the second voltage threshold (S2) and that of the maximum voltage (Umax). ).

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