EP0220598A1 - Light sources control unit - Google Patents

Light sources control unit Download PDF

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Publication number
EP0220598A1
EP0220598A1 EP86114213A EP86114213A EP0220598A1 EP 0220598 A1 EP0220598 A1 EP 0220598A1 EP 86114213 A EP86114213 A EP 86114213A EP 86114213 A EP86114213 A EP 86114213A EP 0220598 A1 EP0220598 A1 EP 0220598A1
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EP
European Patent Office
Prior art keywords
circuit
logic
voltage
lighting
timer
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EP86114213A
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German (de)
French (fr)
Inventor
Marc Raes
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Alcatel CIT SA
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Alcatel CIT SA
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Publication of EP0220598A1 publication Critical patent/EP0220598A1/en
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    • 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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3922—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations and measurement of the incident light

Definitions

  • the present invention relates to the electrical lighting of premises, more particularly offices, shops and factories.
  • the exterior lighting makes it useful to add an interior electrical light which does not require the lights to operate at full power. Reducing the power of electric lighting in these circumstances makes it less aggressive and therefore reduces eye fatigue, saves energy and increases the lifespan of the luminaires because their fittings emit less heat.
  • the object of the present invention is to regulate the electric lighting sources as a function of the external lighting which is simple, practical and easy to implement.
  • the time delay logic circuit advantageously comprises two timers which control over a certain period of time when they are triggered the setting at maximum power of the interior light sources and which are triggered one each time the supply voltage of the device for reappearance regulation after a cut and the other at the end of each cut of the electric lighting controlled by one either of the selection circuits.
  • the automatic selection circuit can be implemented using a window discriminator receiving as input the signal from a photoelectric cell mounted in a polarization bridge and placed in outside light, said signal being transmitted to it via a low-pass filter eliminating rapid fluctuations corresponding to cloudy periods.
  • FIG. 1 A distinction is made in Figure 1 the electrical supply circuit 1 of the interior electrical lighting sources which consists of a three-phase autotransformer 10 supplied by the network L1, L2, L3, N having two sockets U1, U2, U3 and V1 , V2, V3, of a contactor system KM1, KM2, KM3 controlled by coils connecting the output of the electrical supply circuit to the network either directly or through one of the sockets of the transformer 10 and groups of fuses F1, F2, F3 preventing the accidental short-circuiting of the windings of the autotransformer 10.
  • Contactors KM1, KM2, KM3 are closed in, working position and, allow either, when they are all de-energized, to cut off from the network the output of the electrical supply circuit 1 to switch off the lighting, or when one of them is excited to connect the output of the power supply 1 to the network, directly, without going through the autotransformer 10 (contactor KM1) to obtain maximum lighting or, via one of the sockets of the autotransformer 10, (contactor KM2, KM3) to obtain more or less dim lighting.
  • the sockets U1, U2, U3 and V1, V2, V3 of the autotransformer 10 are chosen so as to allow the lighting sources to operate at 70% and 60% of their light power.
  • the minimum output voltage of the supply circuit 1 which is that available on the socket V1, V2, V3 of the autotransformer 10 is chosen sufficiently high so that the fluorescent tubes don't drop out.
  • the contactors KM1, KM2, KM3 of the electrical supply circuit 1 are controlled by means of a coupling circuit 2 by means of a manual selection circuit 3 or an automatic selection circuit 4 operating at from exterior lighting.
  • the automatic selection circuit 4 includes a photoresist cell 40 exposed to external lighting and placed in series in a polarization bridge with an adjustable adjustment resistor 41, a low-pass filter with series resistance 42 and parallel capacitance 43 connected at input. at the midpoint of the polarization bridge where a variable electric voltage develops which is all the weaker as the external illumination is more intense and a window discriminator 44 which is connected to the output of the low-pass filter and which has four binary outputs 440, 441, 442, 443 by which it can control the contactors KM1, KM2, KM3 whose states determine the supply voltage of the electric lighting sources.
  • the low-pass filter 42, 43 eliminates the transmission, to the window discriminator 44, of rapid variations in the voltage of the midpoint of the polarization bridge of the photoresistor 40 caused by fluctuations in the external illumination due to cloudy passages.
  • the window discriminator 44 deduces from the external illumination the value for adjusting the voltage of the supply circuit 1 by locating the instantaneous value of the voltage of the midpoint of the polarization bridge of the photoresistor once it has been filtered with respect to a switching of its variation range in four windows delimited by two extreme thresholds and an intermediate voltage threshold.
  • the output 440 is assigned to a first window below the extreme lower voltage threshold which is only reached by the voltage of the midpoint of the polarization bridge of the photoresistor 40 when the external luminosity is sufficiently strong to eliminate the need for interior lighting. Its passage to the high logic level 1 is interpreted as an order to open all the contactors KM1, KM2, KM3 in order to isolate the lighting sources from the network.
  • the output 441 is assigned to a second window beyond the upper extreme voltage threshold which is reached by the voltage of the midpoint of the polarization bridge of the photoresistor 40 only when the external brightness is reduced, tending towards that of a night time and requires full interior lighting. Its passage to the high logic level 1 is interpreted as an order to close the contactor KM1 in order to apply the network voltage to the lighting sources.
  • the output 442 is assigned to a third window comprised between the upper extreme and intermediate voltage thresholds, which is reached by the voltage of the midpoint of the polarization bridge of the photoresistor 40 when the external brightness is reduced and nevertheless authorizes operation of the interior lighting at 70% of its power. Its passage to the high logic level 1 is interpreted as an order to close the contactor KM2 in order to apply to the lighting sources the weakened voltage of the network available on the socket U1, U2, U3 of the autotransformer 10.
  • the output 443 is assigned to a fourth window comprised between the lower extreme and intermediate voltage thresholds which is only reached by the intermediate voltage of the polarization bridge of the photoresistor 40 when the exterior brightness is average and allows interior lighting at 60 % of its power. His passage to logic level high 1 is interpreted as an order to close the contactor KM3 in order to apply to the light sources the most weakened network voltage available on the socket V1, V2, V3 of the autotransformer 10.
  • the window discriminator 44 is of conventional embodiment, for example, based on integrated circuits of the TCA 965 type from the company SIEMENS.
  • the manual selection circuit 3 has four binary outputs 300, 301, 302, 303 which play the same roles as the respective outputs 440, 441, 442, 443 of the automatic selection circuit 4. It includes bias resistors 310, 311, 312, 313 connecting each of the outputs to ground to provide them with a low logic level 0 at rest and a switch 31, with four positions, which is connected by its movable contact and a resistor 32 to the positive pole + V of a source of polarization and by its fixed contacts at outputs 300, 301, 302, 303 and which allows one of the outputs to be brought to logic high level 1, output 300 when the lighting lamps are to be switched off, and the output 301 respectively 302 or 303 when you want to operate the light sources at 100%, 70% or 60% of their power.
  • Capacitors 320, 321, 322, 323 placed in parallel on the polarization resistors 310, 311, 312, 313 create a time delay which makes it possible to have no cut-off during the passage from one position to another of the switch 31.
  • the coupling circuit 2 is formed by a logic processing circuit 5 followed by a power interface adapting its output levels to the control of the actuating coils when the contactors KM1, KM2, KM3 are closed.
  • the power interface includes relays K1, K2, K3 which control, by their working contact, the excitation of the actuating coils when the contactors KM1, KM2 and KM3 are closed and three amplification stages with transistors 21, 22, 33 supplying the excitation coils of these relays K1, K2, K3 which are fitted with freewheeling diodes 24, 25, 26.
  • Logic processing circuit 5 with its interconnections to the power interface and to the manual 3 and automatic 4 selection circuits is detailed in FIG. 2. It comprises at the input a multiplexer 6 making it possible to choose the signals of the manual selection circuit 3 or those of the automatic selection circuit 4 followed by '' a prepositioning circuit 7 controlled, through a door of type "and" 75, by timers 8 and 9 allowing under certain conditions to impose over a certain period of interior lighting at 100% power, a priority encoder 11 guaranteeing the excitation of a single contactor KM1, KM2, KM3 at the same time and a blocking circuit 12 blocking all excitation control signals from the contactors KM1, KM2, KM3 in the event of an interior lighting extinction command .
  • the multiplexer 6 is conventionally formed of two banks of four logic gates of type "and” with two inputs unlocked alternately by means of an inverter 60, and of a battery of four logic gates of type "or” bringing together two by two the outputs of the "and” type logic gates of the two benches.
  • the prepositioning circuit 7 is formed by two logic gates of type "and" 70, 71 and by a logic gate of type "or” 72 with two inputs, one of which is a reverser.
  • timers 8 and 9 When timers 8 and 9 are not triggered, it transmits without modification the high logic levels which come from outputs 441, 442, 443 of the automatic selection circuit 4 or from outputs 301, 302, 303 of the manual selection circuit and which correspond to orders for adjusting the interior lighting to 100%, 70% or 60% of its power.
  • the logic gates of type "and" 70, 71 are blocked with their outputs at low logic level preventing the transmission of an order to adjust the interior lighting to 70% or 60% of its power and the logic gate type "or” 72 blocks with its output at the high logic level simulating an interior lighting order at 100% of its power.
  • the logic gate 90 After commissioning, in the absence of a command to switch off the interior lighting, the logic gate 90 receives a constant low logic level 0 on one of its inputs and keeps the capacitor 92 charged preventing the timer 9 from rearm.
  • the logic door of type "and" 90 is applied to its two inputs a high logic level 1 which switches its output to high logic level 1 authorizing the discharge of the capacitor 92 and therefore resetting timer 9.
  • the priority encoder 11 receives the logic commands for controlling the adjustment of the interior lighting at 100%, 70% and 60% of its power and transmits only one at a time, giving priority to the logic control order corresponding to the lowest lighting power. It facilitates the realization of the automatic selection circuit 4 by allowing it to issue simultaneous commands.
  • the blocking circuit 12 makes it possible to block the transmission, at the power interface, of orders for adjusting the power of the interior lighting when the selection circuit in service, manual or automatic, issues an order to switch off the 'inside lighting. It is made up of a bank of logic doors of type "and" placed at the output of the priority encoder 11 and provided with a control input coupled, through an inverter, to the output of the logic gate of type " or "of the multiplexer 6 which issues the orders for switching off the interior lighting.

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

Abstract

This control device relates to electrical lighting for rooms and more particularly for offices, shops and factories. It comprises: a power supply circuit 1 with an autotransformer 10 and contactors KM1, KM2 and KM3 allowing stepwise control of the supply voltage for the interior lighting sources, an automatic selection circuit (4) operating from the exterior lighting by virtue of a photoresistor (40), a manual selection circuit (3) and a circuit (2) for coupling the manual (3) and automatic (4) selection circuits and comprising a logic timing circuit (5) which holds the supply for the internal lighting sources at the maximum voltage for a certain duration after a period of extinction, other than manual, of the interior lighting so as to guarantee immediate starting of the fluorescent tubes. <IMAGE>

Description

La présente invention concerne l'éclairage électrique des locaux, plus particulièrement des bureaux, commerces et usines.The present invention relates to the electrical lighting of premises, more particularly offices, shops and factories.

A certaines heures de la journée l'éclairage extérieur rend utile un appoint d'éclairage électrique intérieur qui ne nécessite pas un fonctionnement à pleine puissance des luminaires. Baisser la puissance de l'éclairage électrique dans ces circonstances permet de le rendre moins agressif et par conséquent de diminuer la fatigue des yeux, d'économiser de l'énergie et d'augmenter la durée de vie des luminaires car leurs appareillages dégagent moins de chaleur.At certain times of the day, the exterior lighting makes it useful to add an interior electrical light which does not require the lights to operate at full power. Reducing the power of electric lighting in these circumstances makes it less aggressive and therefore reduces eye fatigue, saves energy and increases the lifespan of the luminaires because their fittings emit less heat.

La présente invention a pour but une régulation des sources électriques d'éclairage en fonction de l'éclairement extérieur qui soit simple, pratique et facile à mettre en oeuvre.The object of the present invention is to regulate the electric lighting sources as a function of the external lighting which is simple, practical and easy to implement.

Elle a pour objet un dispositif de régulation de sources d'éclairage électrique comportant :

  • - un circuit d'alimentation électrique avec une commande de réglage de tension par échelons pour l'alimentation des sources d'éclairage électrique,
  • - un circuit de sélection automatique de l'échelon de réglage de la tension du circuit d'alimentation électrique en fonction de l'éclairement extérieur,
  • - un circuit de sélection manuelle de l'échelon de réglage de la tension du circuit d'alimentation électrique et
  • - un circuit de couplage des circuits de sélection automatique et manuelle à la commande de réglage par échelons de la tension du circuit d'alimentation comportant un circuit logique à temporisation imposant un réglage à l'échelon maximal de tension du circuit d'alimentation pendant une certaine durée après une période d'extinction des sources d'éclairage.
It relates to a device for regulating electrical lighting sources comprising:
  • - an electrical supply circuit with a stepwise voltage adjustment control for the supply of electrical lighting sources,
  • - a circuit for automatic selection of the step for adjusting the voltage of the electrical supply circuit as a function of the external lighting,
  • a circuit for manual selection of the step for adjusting the voltage of the electrical supply circuit and
  • a circuit for coupling the automatic and manual selection circuits to the step-by-step control of the supply circuit voltage comprising a time delay logic circuit imposing an adjustment to the maximum step of the supply circuit voltage during a certain duration after a period of extinction of the sources of lighting.

Le circuit logique à temporisation comporte avantageusement deux temporisateurs qui commandent sur une certaine durée lorsqu'ils sont déclenchés le réglage à puissance maximale des sources d'éclairage intérieur et qui sont déclenchés l'un à chaque réapparition de la tension d'alimentation du dispositif de régulation après une coupure et l'autre à la fin de chaque coupure de l'éclairage électrique commandée par l'un ou l'autre des circuits de sélection.The time delay logic circuit advantageously comprises two timers which control over a certain period of time when they are triggered the setting at maximum power of the interior light sources and which are triggered one each time the supply voltage of the device for reappearance regulation after a cut and the other at the end of each cut of the electric lighting controlled by one either of the selection circuits.

Les circuits de sélection automatique ou manuelle ont avantageusement quatre paliers de fonctionnement :

  • - un premier palier correspondant à la coupure de l'éclairage électrique en cas de plein éclairement extérieur (soleil intense),
  • - un deuxième et un troisième paliers correspondant respectivement à 60 et 70% de la puissance maximale de l'éclairage électrique en cas d'un éclairement extérieur moyen ou faible (soleil pâle, nuage, brouillard) et
  • - un quatrième palier correspondant à la puissance maximale de l'éclairage électrique pendant la période nocturne.
The automatic or manual selection circuits advantageously have four operating stages:
  • - a first level corresponding to switching off the electric lighting in the event of full external lighting (intense sun),
  • - a second and a third level corresponding respectively to 60 and 70% of the maximum power of the electric lighting in the event of an average or weak external lighting (pale sun, cloud, fog) and
  • - a fourth level corresponding to the maximum power of the electric lighting during the night period.

Le circuit de sélection automatique peut être réalisé à l'aide d'un discriminateur à fenêtres recevant en entrée le signal d'une cellule photoélectrique montée dans un pont de polarisation et placée à la lumière extérieure, ledit signal lui étant transmis par l'intermédiaire d'un filtre passe-bas éliminant les fluctuations rapides correspondant à des passages nuageux.The automatic selection circuit can be implemented using a window discriminator receiving as input the signal from a photoelectric cell mounted in a polarization bridge and placed in outside light, said signal being transmitted to it via a low-pass filter eliminating rapid fluctuations corresponding to cloudy periods.

D'autres caractéristiques et avantages de l'invention ressortiront de la description ci-après d'un mode de réalisation donné à titre d'exemple. Cette description sera faite en référence au dessin qui comporte :

  • - une figure 1 représentant le schéma électrique d'un mode de réalisation de l'invention et
  • - une figure 2 détaillant un circuit logique à temporisation apparaissant dans le schéma électrique de la figure 1.
Other characteristics and advantages of the invention will emerge from the description below of an embodiment given by way of example. This description will be made with reference to the drawing which includes:
  • a FIG. 1 representing the electrical diagram of an embodiment of the invention and
  • - Figure 2 detailing a time delay logic circuit appearing in the electrical diagram of Figure 1.

On distingue sur la figure 1 le circuit d'alimentation électrique 1 des sources d'éclairage électrique intérieur qui est constitué d'un autotransformateur triphasé 10 alimenté par le réseau L1, L2, L3, N présentant deux prises U1, U2, U3 et V1, V2, V3, d'un système de contacteurs KM1, KM2, KM3 à commande par bobines reliant la sortie du circuit d'alimentation électrique au réseau soit directement soit par l'intermédiaire de l'une des prises de l'autransformateur 10 et de groupes de fusibles F1, F2, F3 empêchant la mise en court-circuit accidentelle des enroulements de l'autotransformateur 10.A distinction is made in Figure 1 the electrical supply circuit 1 of the interior electrical lighting sources which consists of a three-phase autotransformer 10 supplied by the network L1, L2, L3, N having two sockets U1, U2, U3 and V1 , V2, V3, of a contactor system KM1, KM2, KM3 controlled by coils connecting the output of the electrical supply circuit to the network either directly or through one of the sockets of the transformer 10 and groups of fuses F1, F2, F3 preventing the accidental short-circuiting of the windings of the autotransformer 10.

Les contacteurs KM1, KM2, KM3 sont fermés en,position de travail et, permettent soit, lorsqu'ils sont tous désexcités, de couper du réseau la sortie du circuit d'alimentation électrique 1 pour éteindre l'éclairage, soit lorsque l'un d'entre eux est excité de relier la sortie du circuit d'alimentation 1 au réseau, directement, sans passer par l'autotransformateur 10 (contacteur KM1) pour obtenir l'éclairage maximal ou, par l'intermédiaire de l'une des prises de l'autotransformateur 10, (contacteur KM2, KM3) pour obtenir un éclairage plus ou moins atténué.Contactors KM1, KM2, KM3 are closed in, working position and, allow either, when they are all de-energized, to cut off from the network the output of the electrical supply circuit 1 to switch off the lighting, or when one of them is excited to connect the output of the power supply 1 to the network, directly, without going through the autotransformer 10 (contactor KM1) to obtain maximum lighting or, via one of the sockets of the autotransformer 10, (contactor KM2, KM3) to obtain more or less dim lighting.

Avantageusement, les prises U1, U2, U3 et V1, V2, V3 de l'autotransformateur 10 sont choisies de manière à permettre aux sources d'éclairage un fonctionnement à 70% et 60% de leur puissance lumineuse. Dans le cas très souvent rencontré des sources lumineuses à tubes fluorescents, la tension de sortie minimale du circuit d'alimentation 1 qui est celle disponible sur la prise V1, V2, V3 de l'autotransformateur 10 est choisie suffisamment élevée pour que les tubes fluorescents ne décrochent pas.Advantageously, the sockets U1, U2, U3 and V1, V2, V3 of the autotransformer 10 are chosen so as to allow the lighting sources to operate at 70% and 60% of their light power. In the very often encountered case of light sources with fluorescent tubes, the minimum output voltage of the supply circuit 1 which is that available on the socket V1, V2, V3 of the autotransformer 10 is chosen sufficiently high so that the fluorescent tubes don't drop out.

La commande des contacteurs KM1, KM2, KM3 du circuit d'alimentation électrique 1 se fait par l'intermédiaire d'un circuit de couplage 2 au moyen d'un circuit de sélection manuelle 3 ou d'un circuit de sélection automatique 4 fonctionnant à partir de l'éclairage extérieur.The contactors KM1, KM2, KM3 of the electrical supply circuit 1 are controlled by means of a coupling circuit 2 by means of a manual selection circuit 3 or an automatic selection circuit 4 operating at from exterior lighting.

Le circuit de sélection automatique 4 comporte une cellule photorésistante 40 exposée à l'éclairage extérieur et mise en série dans un pont de polarisation avec une résistance ajustable de réglage 41, un filtre passe-bas à résistance série 42 et capacité parallèle 43 connecté en entrée au point milieu du pont de polarisation où se développe une tension électrique variable d'autant plus faible que l'éclairement extérieur est plus intense et un discriminateur à fenêtres 44 qui est connecté à la sortie du filtre passe-bas et qui présente quatre sorties binaires 440, 441, 442, 443 par lesquelles il peut commander les contacteurs KM1, KM2, KM3 dont les états déterminent la tension d'alimentation des sources d'éclairage électrique.The automatic selection circuit 4 includes a photoresist cell 40 exposed to external lighting and placed in series in a polarization bridge with an adjustable adjustment resistor 41, a low-pass filter with series resistance 42 and parallel capacitance 43 connected at input. at the midpoint of the polarization bridge where a variable electric voltage develops which is all the weaker as the external illumination is more intense and a window discriminator 44 which is connected to the output of the low-pass filter and which has four binary outputs 440, 441, 442, 443 by which it can control the contactors KM1, KM2, KM3 whose states determine the supply voltage of the electric lighting sources.

Le filtre passe-bas 42, 43 élimine la transmission, au discriminateur à fenêtres 44, des variations rapides de la tension du point milieu du pont de polarisation de la photorésistance 40 provoquées par des fluctuations de l'éclairement extérieur dues à des passages nuageux.The low-pass filter 42, 43 eliminates the transmission, to the window discriminator 44, of rapid variations in the voltage of the midpoint of the polarization bridge of the photoresistor 40 caused by fluctuations in the external illumination due to cloudy passages.

Le discriminateur à fenêtres 44 déduit de l'éclairement extérieur la valeur de réglage de la tension du circuit d'alimentation 1 en repérant la valeur instantanée de la tension du point milieu du pont de polarisation de la photorésistance une fois filtrée par rapport à un découpage de sa plage de variation en quatre fenêtres délimitées par deux seuils extrêmes et un seuil intermédiaire de tension.The window discriminator 44 deduces from the external illumination the value for adjusting the voltage of the supply circuit 1 by locating the instantaneous value of the voltage of the midpoint of the polarization bridge of the photoresistor once it has been filtered with respect to a switching of its variation range in four windows delimited by two extreme thresholds and an intermediate voltage threshold.

La sortie 440 est affectée à une première fenêtre en deçà du seuil inférieur extrême de tension qui n'est atteinte par la tension du point milieu du pont de polarisation de la photorésistance 40 que lorsque la luminosité extérieure est suffisamment forte pour supprimer la nécessité d'un éclairage intérieur. Son passage au niveau logique haut 1 est interprété comme un ordre d'ouverture de tous les contacteurs KM1, KM2, KM3 afin d'isoler les sources d'éclairage du réseau.The output 440 is assigned to a first window below the extreme lower voltage threshold which is only reached by the voltage of the midpoint of the polarization bridge of the photoresistor 40 when the external luminosity is sufficiently strong to eliminate the need for interior lighting. Its passage to the high logic level 1 is interpreted as an order to open all the contactors KM1, KM2, KM3 in order to isolate the lighting sources from the network.

La sortie 441 est affectée à une deuxième fenêtre au delà du seuil supérieur extrême de tension qui n'est atteinte par la tension du point milieu du pont de polarisation de la photorésistance 40 que lorsque la luminosité extérieure est réduite, tendant vers celle d'une période nocturne et nécessite un éclairage intérieur à pleine puissance. Son passage au niveau logique haut 1 est interprété comme un ordre de fermeture du contacteur KM1 afin d'appliquer la tension du réseau aux sources d'éclairage.The output 441 is assigned to a second window beyond the upper extreme voltage threshold which is reached by the voltage of the midpoint of the polarization bridge of the photoresistor 40 only when the external brightness is reduced, tending towards that of a night time and requires full interior lighting. Its passage to the high logic level 1 is interpreted as an order to close the contactor KM1 in order to apply the network voltage to the lighting sources.

La sortie 442 est affectée à une troisième fenêtre comprise entre les seuils supérieur extrême et intermédiaire de tension, qui est atteinte par la tension du point milieu du pont de polarisation de la photorésistance 40 lorsque la luminosité extérieure est réduite et autorise toutefois un fonctionnement de l'éclairage intérieur à 70% de sa puissance. Son passage au niveau logique haut 1 est interprété comme un ordre de fermeture du contacteur KM2 afin d'appliquer aux sources d'éclairage la tension affaiblie du réseau disponible sur la prise U1, U2, U3 de l'autotransformateur 10.The output 442 is assigned to a third window comprised between the upper extreme and intermediate voltage thresholds, which is reached by the voltage of the midpoint of the polarization bridge of the photoresistor 40 when the external brightness is reduced and nevertheless authorizes operation of the interior lighting at 70% of its power. Its passage to the high logic level 1 is interpreted as an order to close the contactor KM2 in order to apply to the lighting sources the weakened voltage of the network available on the socket U1, U2, U3 of the autotransformer 10.

La sortie 443 est affectée à une quatrième fenêtre comprise entre les seuils inférieur extrême et intermédiaire de tension qui n'est atteinte par la tension intermédiaire du pont de polarisation de la photorésistance 40 que lorsque la luminosité extérieure est moyenne et autorise un éclairage intérieur à 60% de sa puissance. Son passage au niveau logique haut 1 est interprété comme un ordre de fermeture du contacteur KM3 afin d'appliquer aux sources d'éclairage la tension du réseau la plus affaiblie disponible sur la prise V1, V2, V3 de l'autotransformateur 10.The output 443 is assigned to a fourth window comprised between the lower extreme and intermediate voltage thresholds which is only reached by the intermediate voltage of the polarization bridge of the photoresistor 40 when the exterior brightness is average and allows interior lighting at 60 % of its power. His passage to logic level high 1 is interpreted as an order to close the contactor KM3 in order to apply to the light sources the most weakened network voltage available on the socket V1, V2, V3 of the autotransformer 10.

Le discriminateur à fenêtres 44 est de réalisation classique, par exemple, à base de circuits intégrés du type TCA 965 de la Société SIEMENS.The window discriminator 44 is of conventional embodiment, for example, based on integrated circuits of the TCA 965 type from the company SIEMENS.

Le circuit de sélection manuelle 3 présente quatre sorties binaires 300, 301, 302, 303 qui jouent les mêmes rôles que les sorties respectives 440, 441, 442, 443 du circuit de sélection automatique 4. Il comporte des résistances de polarisation 310, 311, 312, 313 reliant chacune des sorties à la masse pour leur assurer un niveau logique bas 0 au repos et un commutateur 31, à quatre positions, qui est connecté par son contact mobile et une résistance 32 au pôle positif +V d'une source de polarisation et par ses contacts fixes aux sorties 300, 301, 302, 303 et qui permet de porter à volonté l'une des sorties au niveau logique haut 1 , la sortie 300 lorsque l'on veut éteindre les lampes d'éclairage, et la sortie 301 respectivement 302 ou 303 lorsque l'on veut faire fonctionner les sources d'éclairage à 100%, 70% ou 60% de leur puissance.The manual selection circuit 3 has four binary outputs 300, 301, 302, 303 which play the same roles as the respective outputs 440, 441, 442, 443 of the automatic selection circuit 4. It includes bias resistors 310, 311, 312, 313 connecting each of the outputs to ground to provide them with a low logic level 0 at rest and a switch 31, with four positions, which is connected by its movable contact and a resistor 32 to the positive pole + V of a source of polarization and by its fixed contacts at outputs 300, 301, 302, 303 and which allows one of the outputs to be brought to logic high level 1, output 300 when the lighting lamps are to be switched off, and the output 301 respectively 302 or 303 when you want to operate the light sources at 100%, 70% or 60% of their power.

Des condensateurs 320, 321, 322, 323 placés en parallèle sur les résistances de polarisation 310, 311, 312, 313 créent une temporisation qui permet de ne pas avoir de coupure pendant le passage d'une position sur une autre du commutateur 31.Capacitors 320, 321, 322, 323 placed in parallel on the polarization resistors 310, 311, 312, 313 create a time delay which makes it possible to have no cut-off during the passage from one position to another of the switch 31.

Le circuit de couplage 2 est formé d'un circuit de traitement logique 5 suivi d'un interface de puissance adaptant ses niveaux de sortie à la commande des bobines d'actionnement à la fermeture des contacteurs KM1, KM2, KM3.The coupling circuit 2 is formed by a logic processing circuit 5 followed by a power interface adapting its output levels to the control of the actuating coils when the contactors KM1, KM2, KM3 are closed.

L'interface de puissance comporte des relais K1, K2, K3 qui commandent par leur contact de travail l'excitation des bobines d'actionnement à la fermeture des contacteurs KM1, KM2 et KM3 et trois étages d'amplification à transistors 21, 22, 33 alimentant les bobines d'excitation de ces relais K1, K2, K3 qui sont équipés de diodes de roue libre 24, 25, 26.The power interface includes relays K1, K2, K3 which control, by their working contact, the excitation of the actuating coils when the contactors KM1, KM2 and KM3 are closed and three amplification stages with transistors 21, 22, 33 supplying the excitation coils of these relays K1, K2, K3 which are fitted with freewheeling diodes 24, 25, 26.

Le circuit de traitement logique 5 avec ses interconnexions à l'interface de puissance et aux circuits de sélection manuelle 3 et automatique 4 est détaillé à la figure 2. Il comporte en entrée un multiplexeur 6 permettant de choisir les signaux du circuit de sélection manuelle 3 ou ceux du circuit de sélection automatique 4 suivi d'un circuit de prépositionnement 7 commandé, à travers une porte de type "et" 75, par des temporisateurs 8 et 9 permettant dans certaines conditions d'imposer sur une certaine durée un éclairage intérieur à 100% de puissance, un encodeur de priorité 11 garantissant l'excitation d'un seul contacteur KM1, KM2, KM3 à la fois et un circuit de blocage 12 bloquant tous signaux de commande d'excitation des contacteurs KM1, KM2, KM3 en cas de commande d'extinction de l'éclairage intérieur.Logic processing circuit 5 with its interconnections to the power interface and to the manual 3 and automatic 4 selection circuits is detailed in FIG. 2. It comprises at the input a multiplexer 6 making it possible to choose the signals of the manual selection circuit 3 or those of the automatic selection circuit 4 followed by '' a prepositioning circuit 7 controlled, through a door of type "and" 75, by timers 8 and 9 allowing under certain conditions to impose over a certain period of interior lighting at 100% power, a priority encoder 11 guaranteeing the excitation of a single contactor KM1, KM2, KM3 at the same time and a blocking circuit 12 blocking all excitation control signals from the contactors KM1, KM2, KM3 in the event of an interior lighting extinction command .

Le multiplexeur 6 est formé de manière classique de deux bancs de quatre portes logiques de type "et" à' deux entrées débloqués en alternance au moyen d'un inverseur 60, et d'une batterie de quatre portes logiques de type "ou" réunissant deux à deux les sorties des portes logiques de type "et"des deux bancs.The multiplexer 6 is conventionally formed of two banks of four logic gates of type "and" with two inputs unlocked alternately by means of an inverter 60, and of a battery of four logic gates of type "or" bringing together two by two the outputs of the "and" type logic gates of the two benches.

Le circuit de prépositionnement 7 est formé de deux portes logiques de type "et" 70, 71 et d'une porte logique de type "ou" 72 à deux entrées dont une inverseuse. Lorsque les temporisateurs 8 et 9 ne sont pas déclenchés il transmet sans modification des niveaux logiques hauts qui proviennent des sorties 441, 442, 443 du circuit de sélection automatique 4 ou des sorties 301, 302, 303 du circuit de sélection manuelle et qui correspondent à des ordres de réglage de l'éclairage intérieur à 100%, 70% ou 60% de sa puissance. Lorsque l'un des temporisateurs 8 ou 9 est déclenché, les portes logiques de type "et" 70, 71 se bloquent avec leurs sorties au niveau logique bas empêchant la transmission d'un ordre de réglage de l'éclairage intérieur à 70% ou 60% de sa puissance et la porte logique de type "ou" 72 se bloque avec sa sortie au niveau logique haut simulant un ordre d'éclairage intérieur à 100% de sa puissance.The prepositioning circuit 7 is formed by two logic gates of type "and" 70, 71 and by a logic gate of type "or" 72 with two inputs, one of which is a reverser. When timers 8 and 9 are not triggered, it transmits without modification the high logic levels which come from outputs 441, 442, 443 of the automatic selection circuit 4 or from outputs 301, 302, 303 of the manual selection circuit and which correspond to orders for adjusting the interior lighting to 100%, 70% or 60% of its power. When one of the timers 8 or 9 is triggered, the logic gates of type "and" 70, 71 are blocked with their outputs at low logic level preventing the transmission of an order to adjust the interior lighting to 70% or 60% of its power and the logic gate type "or" 72 blocks with its output at the high logic level simulating an interior lighting order at 100% of its power.

Le temporisateur 8 provoque par l'intermédiaire du circuit de prépositionnement 7 un réglage de l'éclairage intérieur à 100% de sa puissance après chaque remise sous tension de l'installation pendant un délai suffisant pour permettre l'allumage instantané des tubes fluorescents. Il comporte deux portes logiques de type "ou" à deux entrées 80, 81 mises en série par l'intermédiaire d'un condensateur 82 et d'une résistance parallèle 83 rappelant les entrées de la deuxième porte logique 81 au niveau logique 1. Le fonctionnement est le suivant :

  • En l'absence d'alimentation, le condensateur 82 se décharge ou est déchargé. A la remise sous tension la porte logique 80 a sa sortie au niveau logique bas 0 qui est transmis par le condensateur 82 le temps de sa charge au travers de la résistance 83 aux entrées de la porte logique 81 dont la sortie est au niveau logique 0 et active le circuit de prépositionnement 7 par l'intermédiaire de la porte logique de type "et" 75. Après un certain temps de charge du condensateur 82, la tension en entrée de la porte logique 81 devient suffisante pour que cette dernière bascule et fasse passer sa sortie au niveau logique haut 1 entraînant la libération du circuit de prépositionnement 7 et le basculement au niveau logique haut 1 de la sortie de la porte logique 80 pour assurer la décharge du condensateur 82 qui conditionne le réarmement du temporisateur 8.
The timer 8 causes, by means of the prepositioning circuit 7, an adjustment of the interior lighting to 100% of its power after each re-energization of the installation for a sufficient time to allow instant lighting of the fluorescent tubes. It has two logic doors of type "or" two inputs 80, 81 connected in series via a capacitor 82 and a parallel resistor 83 recalling the inputs of the second logic gate 81 at logic level 1. The operation is as follows:
  • In the absence of power, the capacitor 82 discharges or is discharged. When power is restored, logic gate 80 has its output at logic level 0 which is transmitted by capacitor 82 for the duration of its charge through resistor 83 to the inputs of logic gate 81 whose output is at logic level 0 and activates the prepositioning circuit 7 via the logic gate of type "and" 75. After a certain time of charging the capacitor 82, the input voltage of the logic gate 81 becomes sufficient for the latter to flip and make pass its output to the high logic level 1 causing the release of the prepositioning circuit 7 and the switching to the high logic level 1 of the output of the logic gate 80 to ensure the discharge of the capacitor 82 which conditions the resetting of the timer 8.

Le temporisateur 9 permet d'imposer par l'intermédiaire du circuit de prépositionnement 7 un réglage de l'éclairage intérieur à 100% de sa puissance pendant une certaines durée après chaque suppression d'un ordre d'extinction de l'éclairage intérieur en sortie multiplexeur 6, ceci pour permettre l'allumage instantané des tubes fluorescents avant de laisser libre cours au pilotage par la cellule photorésistante ou à la commande manuelle. Ce temporisateur 9 est composé de deux portes logiques de type "et" à deux entrées 90, 91 mises en série par l'intermédiaire d'un réseau RC 92, 93 la première porte 90 ayant une entrée couplée à la sortie de la deuxième 91 et une entrée couplée à la sortie de la porte logique "ou" du multiplexeur 6 placée en aval de la sortie 440 du circuit de sélection automatique et de la sortie 300 du circuit de sélection manuelle, qui délivre les ordres logiques d'extinction de l'éclairage intérieur. Son fonctionnement est le suivant :

  • A la mise en service, la porte logique 90 peut recevoir sur une entrée un niveau logique bas 0 qui est transmis par le condensateur 92 initialement déchargé à la porte logique 91 et qui s'automaintient en raison du rebouclage. Le temporisateur 9 est alors déclenché et fonctionne en doublure du temporisateur 8. Après la charge du condensateur 92 la sortie de la porte logique 91 bascule à l'état logique haut 1 libérant le circuit de prépositionnement 7.
The timer 9 makes it possible to impose, via the prepositioning circuit 7, an adjustment of the interior lighting to 100% of its power for a certain duration after each deletion of an order to extinguish the interior lighting at the output. multiplexer 6, this to allow instant lighting of the fluorescent tubes before giving free rein to piloting by the photoresist cell or manual control. This timer 9 is composed of two logic gates of type "and" with two inputs 90, 91 connected in series via an RC network 92, 93 the first gate 90 having an input coupled to the output of the second 91 and an input coupled to the output of the logic gate "or" of the multiplexer 6 placed downstream of the output 440 of the automatic selection circuit and of the output 300 of the manual selection circuit, which delivers the logic orders for the extinction of the 'inside lighting. Its operation is as follows:
  • On commissioning, the logic gate 90 can receive on an input a low logic level 0 which is transmitted by the capacitor 92 initially discharged to the logic gate 91 and which self-maintains due to the loopback. Timer 9 is then started and operates as a timer 8. After charging the capacitor 92, the output of the logic gate 91 switches to the high logic state 1 releasing the prepositioning circuit 7.

Après la mise en service, en l'absence de commande d'extinction de l'éclairage intérieur, la porte logique 90 reçoit un niveau logique bas 0 constant sur l'une de ses entrées et maintient le condensateur 92 chargé empêchant le temporisateur 9 de se réarmer.After commissioning, in the absence of a command to switch off the interior lighting, the logic gate 90 receives a constant low logic level 0 on one of its inputs and keeps the capacitor 92 charged preventing the timer 9 from rearm.

Dès qu'apparaît une commande d'extinction de l'éclairage intérieur, la porte logique de type "et" 90 se voit appliquer sur ses deux entrées un niveau logique haut 1 qui fait basculer sa sortie au niveau logique haut 1 autorisant la décharge du condensateur 92 et par conséquent le réarmement du temporisateur 9.As soon as a command to extinguish the interior lighting appears, the logic door of type "and" 90 is applied to its two inputs a high logic level 1 which switches its output to high logic level 1 authorizing the discharge of the capacitor 92 and therefore resetting timer 9.

Lorsque cette commande d'extinction disparaît, la porte logique de type "et" 90 se voit à nouveau appliquer un niveau logique bas 0 sur une de ses entrées qui la fait basculer et déclenche le temporisateur 9 le temps de la charge du condensateur 92.When this extinction command disappears, the logic gate of type "and" 90 is again applied a low logic level 0 to one of its inputs which causes it to toggle and triggers the timer 9 while the capacitor 92 is charging.

L'encodeur de priorité 11 reçoit les ordres logiques de commande de réglage de l'éclairage intérieur à 100%, 70% et 60% de sa puissance et n'en transmet qu'un seul à la fois en donnant la priorité à l'ordre logique de commande correspondant à la puissance d'éclairage la plus faible. Il facilite la réalisation du circuit de sélection automatique 4 en permettant que celui-ci délivre des commandes simultanées.The priority encoder 11 receives the logic commands for controlling the adjustment of the interior lighting at 100%, 70% and 60% of its power and transmits only one at a time, giving priority to the logic control order corresponding to the lowest lighting power. It facilitates the realization of the automatic selection circuit 4 by allowing it to issue simultaneous commands.

Le circuit de blocage 12 permet de bloquer la transmission, à l'interface de puissance, des ordres de réglage de la puissance de l'éclairage intérieur lorsque le circuit de sélection en service, manuel ou automatique, délivre un ordre d'extinction de l'éclairage intérieur. Il est formé d'un banc de portes logiques de type "et" placées en sortie de l'encodeur de priorité 11 et munies d'une entrée de commande couplée, à travers un inverseur, à la sortie de la porte logique de type "ou" du multiplexeur 6 qui délivre les ordres d'extinction de l'éclairage intérieur.The blocking circuit 12 makes it possible to block the transmission, at the power interface, of orders for adjusting the power of the interior lighting when the selection circuit in service, manual or automatic, issues an order to switch off the 'inside lighting. It is made up of a bank of logic doors of type "and" placed at the output of the priority encoder 11 and provided with a control input coupled, through an inverter, to the output of the logic gate of type " or "of the multiplexer 6 which issues the orders for switching off the interior lighting.

On peut, sans sortir du cadre de la présente invention modifier certaines dispositions ou remplacer certains moyens par des moyens équivalents.Without departing from the scope of the present invention, it is possible to modify certain provisions or replace certain means by equivalent means.

Claims (7)

1/ Dispositif de régulation de sources d'éclairage électrique, caractérisé en ce qu'il comporte : - un circuit d'alimentation électrique (1) avec une commande de réglage de tension par échelons pour l'alimentation des sources d'éclairage électrique, - un circuit de sélection manuelle (3) de la tension de réglage du circuit d'alimentation électrique, - un circuit de sélection automatique (4) de la tension de réglage du circuit d'alimentation électrique en fonction de l'éclairement extérieur et - un circuit de couplage (2) des circuits de sélection manuelle et automatique (3, 4) à la commande de réglage par échelons de la tension du circuit d'alimentation (1) comportant un circuit logique à temporisation (5) imposant le réglage de tension maximale au circuit d'alimentation (1) pendant une certaine durée après une période d'extinction des sources d'éclairage. 1 / Device for regulating electric light sources, characterized in that it comprises: - an electrical supply circuit (1) with a stepwise voltage adjustment control for the supply of electrical lighting sources, - a manual selection circuit (3) of the adjustment voltage of the electrical supply circuit, - an automatic selection circuit (4) of the adjustment voltage of the electrical supply circuit as a function of the external illumination and - a coupling circuit (2) of the manual and automatic selection circuits (3, 4) to the step-by-step control of the voltage of the supply circuit (1) comprising a time delay logic circuit (5) imposing the adjustment of maximum voltage to the supply circuit (1) for a certain period after a period of switching off the light sources. 2/ Dispositif selon la revendication 1, caractérisé en ce que le circuit de sélection automatique comporte : - une cellule photorésistante (40) montée dans un pont de polarisation à résistance ajustable (41) et excitée par la lumière extérieure, - un discriminateur à fenêtres (44) recevant en entrée le signal de la cellule photorésistante (40) et présentant plusieurs sorties (440, 441, 442, 443) spécialisées en fonction du niveau du signal électrique en provenance de la cellule photorésistante (40) - et un filtre passe-bas (42, 43) intercalé entre la cellule photorésistante (40) et le discriminateur à fenêtres (44) éliminant les variations rapides dù signal de la cellule photorésistante (40) dues à des passages nuageux. 2 / Device according to claim 1, characterized in that the automatic selection circuit comprises: - a photoresist cell (40) mounted in an adjustable resistance bias bridge (41) and excited by outside light, - a window discriminator (44) receiving as input the signal from the photoresist cell (40) and having several outputs (440, 441, 442, 443) specialized according to the level of the electrical signal coming from the photoresist cell (40) - And a low-pass filter (42, 43) interposed between the photoresist cell (40) and the window discriminator (44) eliminating the rapid variations of signal of the photoresist cell (40) due to cloudy passages. 3/ Dispositif selon la revendication 1, caractérisé en ce que le circuit logique à temporisateur (5) comporte un premier temporisateur (8) qui commande sur une certaine durée lorsqu'il est déclenché le réglage à puissance maximale des sources d'éclairage intérieur et qui est déclenché à chaque réapparition de la tension d'alimentation du dispositif de régulation.3 / Device according to claim 1, characterized in that the timer logic circuit (5) comprises a first timer (8) which controls over a certain duration when the setting at maximum power of the interior lighting sources is triggered and which is triggered each time the supply voltage of the regulating device reappears. 4/ Dispositif selon la revendication 3, caractérisé en ce que ledit premier temporisateur (8) comporte deux portes logiques de type "ou" (80, 81) connectées à la suite par l'intermédiaire d'un condensateur série (82) et d'une résistance parallèle (83) rappelant les entrées de la deuxième porte logique (81) au niveau logique haut, et rebouclées sur elles-mêmes, la sortie de la deuxième porte logique (81) étant connectée à l'une des entrées de la première (80).4 / Device according to claim 3, characterized in that said first timer (8) comprises two logic gates of type "or" (80, 81) connected thereafter via a serial capacitor (82) and d '' a parallel resistor (83) recalling the inputs of the second logic gate (81) at the high logic level, and looped back on themselves, the output of the second logic gate (81) being connected to one of the inputs of the first (80). 5/ Dispositif selon la revendication 3, caractérisé en ce que le circuit logique à temporisation (5) comporte un deuxième temporisateur (9) qui commande sur une certaine durée lorsqu'il est déclenché le réglage à puissance maximale des sources d'éclairage intérieur et qui est déclenché à la fin de chaque coupure de l'éclairage intérieur commandée par l'un ou l'autre des circuits de sélection.5 / Device according to claim 3, characterized in that the timing logic circuit (5) comprises a second timer (9) which controls over a certain period when the setting at maximum power of the interior lighting sources is triggered and which is triggered at the end of each cut of the interior lighting controlled by one or other of the selection circuits. 6/ Dispositif selon la revendication 4, caractérisé en ce que ledit deuxième temporisateur (9) comporte deux portes logiques de type "et" (90, 91) connectées à la suite par l'intermédiaire d'un condensateur série (92) et d'une résistance parallèle (93) rappelant les entrées de la deuxième porte logique (91) au niveau logique haut, et rebouclées sur elles-mêmes, la sortie de la deuxième porte logique (91) étant connectée à l'une des entrées de la première (90).6 / Device according to claim 4, characterized in that said second timer (9) comprises two logic gates of type "and" (90, 91) connected thereafter via a serial capacitor (92) and d '' a parallel resistor (93) recalling the inputs of the second logic gate (91) at the high logic level, and looped back on themselves, the output of the second logic gate (91) being connected to one of the inputs of the first (90). 7/ Dispositif selon la revendication 1, caractérisé en ce que le circuit d'alimentation électrique 1, comporte un autotransformateur (10) avec plusieurs prises de sortie (U1, U2, U3 ; V1, V2, V3) connectables aux sources d'éclairage intérieur au moyen de contacteurs (KM1, KM2, KM3) commandés par le circuit de couplage (2).7 / Device according to claim 1, characterized in that the electrical supply circuit 1, comprises an autotransformer (10) with several output sockets (U1, U2, U3; V1, V2, V3) connectable to the light sources interior by means of contactors (KM1, KM2, KM3) controlled by the coupling circuit (2).
EP86114213A 1985-10-16 1986-10-14 Light sources control unit Withdrawn EP0220598A1 (en)

Applications Claiming Priority (2)

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FR8515343 1985-10-16
FR8515343A FR2588712B1 (en) 1985-10-16 1985-10-16 LIGHTING SOURCE CONTROL DEVICE

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
ES2123416A1 (en) * 1993-02-04 1999-01-01 Aguiar Lopez Emilio A system for reducing the consumption of electric energy in public and private lighting networks

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US3940660A (en) * 1973-12-14 1976-02-24 Edwards Frederick H Circuitry for load connection and disconnection
FR2293781A1 (en) * 1974-12-05 1976-07-02 Legrand Sa Light-activated automatic switch - has electromagnetic relay operated by either light detector or manual push-buttons
US4189664A (en) * 1977-10-05 1980-02-19 Hirschfeld Richard L Power control unit for automatic control of power consumption in a lighting load
DE3000400A1 (en) * 1980-01-08 1981-07-09 Harald 7012 Fellbach Lück Fluorescent tube and high pressure vapour lamp operating system - initially connects lamps on starting to AC mains, with subsequent switching to light control mains
WO1981003596A1 (en) * 1980-05-27 1981-12-10 H Hoge A feedback control system for applying ac power to ballasted lamps

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940660A (en) * 1973-12-14 1976-02-24 Edwards Frederick H Circuitry for load connection and disconnection
FR2293781A1 (en) * 1974-12-05 1976-07-02 Legrand Sa Light-activated automatic switch - has electromagnetic relay operated by either light detector or manual push-buttons
US4189664A (en) * 1977-10-05 1980-02-19 Hirschfeld Richard L Power control unit for automatic control of power consumption in a lighting load
DE3000400A1 (en) * 1980-01-08 1981-07-09 Harald 7012 Fellbach Lück Fluorescent tube and high pressure vapour lamp operating system - initially connects lamps on starting to AC mains, with subsequent switching to light control mains
WO1981003596A1 (en) * 1980-05-27 1981-12-10 H Hoge A feedback control system for applying ac power to ballasted lamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2123416A1 (en) * 1993-02-04 1999-01-01 Aguiar Lopez Emilio A system for reducing the consumption of electric energy in public and private lighting networks

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FR2588712A1 (en) 1987-04-17

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