EP2073608B1 - Gesichertes System zur Beleuchtungsverwaltung - Google Patents

Gesichertes System zur Beleuchtungsverwaltung Download PDF

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Publication number
EP2073608B1
EP2073608B1 EP08291209A EP08291209A EP2073608B1 EP 2073608 B1 EP2073608 B1 EP 2073608B1 EP 08291209 A EP08291209 A EP 08291209A EP 08291209 A EP08291209 A EP 08291209A EP 2073608 B1 EP2073608 B1 EP 2073608B1
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EP
European Patent Office
Prior art keywords
lighting
switch
circuits
command
central unit
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EP08291209A
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English (en)
French (fr)
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EP2073608A1 (de
Inventor
Friedrich Brück
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Beg France
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Beg France
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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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection

Definitions

  • the present invention relates to automatic lighting management systems.
  • An automatic lighting management system is used to illuminate a room at appropriate times, that is to say when it is occupied by a person, an extinction occurring if the person leaves the premises or if the natural lighting becomes sufficient. It can be a living room or hallway, especially in a building or school.
  • the system includes a person presence sensor, for example providing an infrared captured image for thermally detecting the presence of a person, and then controlling the desired illumination.
  • a person presence sensor for example providing an infrared captured image for thermally detecting the presence of a person, and then controlling the desired illumination.
  • the present invention aims to better ensure this personal safety function, even in the event of failure of one of the components of the system.
  • the invention relates to an automatic lighting management system comprising a group of circuits constituted by a central unit and at least one event sensor for activating it so that it controls a change of state of a power switch of a lighting source of a volume, in which there are provided failure detector means arranged to detect at least one type of failure of at least one component of said group and arranged to generate a safety control, passage, or hold, in an ignition state of the lighting source, characterized in that the failure detector means comprise an arranged voltage comparator for comparing a supply voltage of the at least one event sensor with a reference voltage and for detecting a said failure if the comparison result provides a comparison deviation exceeding a predetermined limit value. An abnormal drop, or even disappearance, of the sensor supply is thus detected.
  • the failure of an infrared sensor to detect the presence of people in order to control the ignition will immediately cause such ignition, and this regardless of the presence of a person, that one can no longer detect.
  • the system works in inverse of a conventional system, that is to say that the detector must provide, explicitly, information of absence of any person (for example "infrared” image "empty") for a command to open the switch is allowed.
  • such operation may be limited to certain time slots, for example at night.
  • the switch can be any type of switch, for example an electromechanical relay or a static semiconductor switch such as transistor or thyristor.
  • the above system may also relate, more generally, comfort, that is to say that the system could control, in place of the light source, any other element or electrical appliance or electronics such as radiators, music restitution devices and others.
  • the central unit controls the transition from an extinction state to said ignition state by suppressing a muting voltage of the switch which held it in an open state.
  • the muting voltage of the switch is therefore an excitation control which keeps it open, and any disappearance of this voltage, by failure of the power supply of the circuits or cutting of a wire, will allow the "fallout" of the switch in the closed state, that is to say conductive.
  • the energy allowing the "fallout” of the switch is for example provided by gravity, or by a spring or by a magnetic or electromagnetic force.
  • the central unit may comprise sequencing means arranged to cyclically control an ignition of a test light source intended to be detected by a an ambient light level sensor connected at the output to the central unit whose comparator circuits are arranged to compare the ambient light level with a threshold in memory and allow to command the closing of the switch if the threshold is crossed at the descent .
  • It can for example be a "twilight” sensor, which controls the ignition at night, or which only allows it if a person is detected by the presence sensor, that is to say during the day, the action of the latter presence sensor is inhibited, the ignition being prohibited during the day.
  • said light source can also serve as said test light source, and the central unit is then arranged to cyclically control the closing of said switch to detect the ignition of the light source by means of said at least one event sensor.
  • the failure detection means may also comprise a comparator arranged to detect the state of the switch and compare it to said safety command, and to, in case of discrepancy, to control the closing of an emergency switch to supply the power supply. lighting source.
  • any non-zero voltage at its terminals means that it has not (perfectly) closed, that is to say that its control circuit (coil or equivalent) is defective or that its contact itself, or equivalent, has a defect, for example charbonne if it is a relay.
  • a relay contact bonding will be detected if the corresponding voltage is permanently zero while the relay is controlled to remain open.
  • the failure detector means advantageously comprise signaling circuits of a said failure.
  • It can be any means of human-machine relations, for example a voice announcement circuit on a control panel or a simple light emitting diode, LED.
  • Said signaling circuits preferably comprise data transmission interface circuits arranged to transmit a failure alarm to management means, circuits for example arranged to transmit on a data transmission network to a management center.
  • circuits of a telephone of the public network PSTN or wireless, cellular or satellite for calling on a telephone network, or for circuits of specialized network interface of data transmission as per example the Internet network.
  • the management center can, in turn, warn the user that the system is locked in the ignition state, and it can also automatically send a troubleshooter.
  • the figure represents a central unit 10 for managing an automatic lighting management system intended to control the lighting of one or more light sources of a volume to be secured by lighting, such as a living room, office, parking or corridor, sources represented here schematically by a single bulb 1 electric powered here from the general network or 220 volts electrical distribution area.
  • lighting such as a living room, office, parking or corridor
  • sources represented here schematically by a single bulb 1 electric powered here from the general network or 220 volts electrical distribution area.
  • the system is intended to control the ignition of the bulb 1 when it detects the presence of a person in the secure volume assigned to it.
  • the central unit 10 comprises a time base 11 punctuating the operations of a calculation block 12 controlled by a memory 13 of programs for managing the basic function, automatic lighting management, and a security function intrinsic to the basic function.
  • a sequencer 14 controls the cyclical launch of the desired programs.
  • the detection of at least one person is carried out by means of a camera forming an infrared sensor 9 supplying image signals to an image analysis circuit 19 belonging to the central unit 10
  • the image analysis circuit 19 cyclically compares a received current image with a reference image, stored locally, of the volume considered in the "empty" state of persons, to search for any area of the current image that would have a current image. aspect different from that of the same area in the reference image.
  • the reference image can therefore, without inconvenience, include zones of hot spots, for example radiators, since it is the abrupt drift relative to the reference image which is detected.
  • the image analysis circuits 19 supply this information to the calculation block 12 which then controls control 17A, output interface, controlling the transition to the closed state, that is to say driver, a contact 3, a relay switch 2, supplying the bulb 1 from the 220-volt network.
  • the contact 3 is of the "rest" type, or else "normally closed", so that, in the absence of the need for lighting, the unit 10 controls the permanent excitation of a coil 4 of the relay 2.
  • the central unit 10 will therefore control the control interface circuits 17A, to interrupt the excitation of the coil 4, through a "low” end thereof, so that a blade of the contact 3 goes to the closed state, conductive.
  • the supply voltage from the power supply unit 6 is applied to a first input of a comparator 16, a second input of which is connected to the output of a low power supply memory 16S.
  • the supply voltage here being 12 volts DC for the various circuits, which are type C MOS and therefore with a wide range of supply voltage, the low threshold is here set at 8 volts.
  • the voltage comparator 16 may be an operational amplifier circuit, that is to say an analog comparator, or a digital circuit comprising an analog / digital converter (ADC) on the first input.
  • ADC analog / digital converter
  • the power supply 6 also powers +12 volts at the "high" end of the coil 4.
  • the coil 4 thus constitutes a voltage comparator, however less accurate than the comparator 16, because its threshold depends on the magnetic properties of the coil 4, which properties vary from one relay to the other in the same batch of relays.
  • the output of the comparator 16 provides a signal corresponding to the calculation block 12, which controls the closure of the contact 3.
  • the output of the power supply unit 5 is applied to a first input of a comparator 15 of which a second input receives a low threshold signal stored locally in a low threshold memory 15S .
  • the output of the comparator 15 controls the calculation block 12, just like that of the comparator 16, to control the ignition of the bulb 1 in the event of an excessive drop in the power supply of the infrared sensor 9.
  • the monitored volume is not a naturally dark room such as corridor or basement, so that to avoid unnecessarily controlling the lighting of the bulb 1 in daylight, there is provided a panel 8 photo-voltaic cell detecting the level of ambient light.
  • An output signal from the ambient detector panel 8 is applied to a first input of a comparator 18, a second input of which receives from an ambient light level memory 18S an ambient light threshold signal so that, if the detected level is greater than the threshold, the comparator 18 transmits to the calculation block 12 an inhibition signal, prohibiting lighting the bulb 1, and even prohibiting to keep it on.
  • the program in memory 13 is thus arranged so that, on receiving such a signal, the calculation block 12 emits or confirms an extinction command.
  • the comparator 17 is powered by a separate power supply unit (not drawn), galvanically isolated from the rest of the circuits, since it is connected to the AC mains 220 volts, that is to say to voltage incompatible with these circuits because it is excessive and moreover negative half of the time.
  • the output of the comparator 17 then controls the input diode of an opto-coupler, not drawn, of which an output transistor provides the connection to the calculation block 12.
  • the comparator 17, which serves as a voltmeter could be connected to the two terminals of the bulb 1. It can also be thought to replace it with an opto-coupler input diode connected in parallel with one another. the bulb 1 and protected by current by a series resistor and, in reverse voltage, by a series or parallel diode.
  • a beginning of deterioration of the contact 3, causing a voltage drop of only a few volts, would be more difficult to detect, because of the lack of direct measurement of the mains voltage 220 V.
  • the contact 3 may however be of the type with twin blades, that is to say two blades in parallel.
  • the calculation block 12 can compare the actual state of the contact 3 with respect to the desired state, as defined by the last command sent to the control circuits 17A and stored in the calculation block 12. In the event of a discrepancy between the actual state and the desired state of the contact 3, and precisely if the contact 3 is detected to be open when it should be closed, the calculation block 12 controls a other relay switch 2B contact 3B and coil 4B, controlled by control circuits 17B.
  • the relay 2B and the control circuits 17B, backup are respectively identical to the relay 2 and the control circuits 17A and their connection is also identical. A repetition of the corresponding description is therefore unnecessary.
  • the contact 3B, in parallel with the contact 3, thus ensures the passage of the current to the bulb 1.
  • the relay 2 can be replaced by a semiconductor switch, such as a transistor or a thyristor, with the necessary protections against the negative alternation of the mains voltage 220 V.
  • a semiconductor switch such as a transistor or a thyristor
  • the sequencer 14 periodically launches, via the calculation block 12, stimuli by ignition control of an external light source, here a light-emitting diode or LED 7, by a link not shown.
  • the ignition is delayed, that is to say, the sequencer 14 controls the extinction of the LED 7 a short time after ignition, for example 1 second.
  • the lighting of the LED 7 is detected by the infrared sensor 9, and the image analysis circuits 19 can thus detect in return the change of the infrared image and provide a corresponding indication of change of state to the block of
  • the calculation block 12 does not receive such an indication in a predetermined period of time by a watchdog, the infrared sensor 9 is considered to be out of order, that is to say intrinsically failing. or failed 5 supply.
  • the calculation block 12 then controls the transition to the default security state, that is to say of lighting the bulb 1.
  • the stimuli are emitted at known times of the calculation block 12, it is sufficient that the latter receives a said indication of change of state of the image in all or nothing form, that is to say a single bit, since a person's arrival detection at exactly the same time is unlikely. And even in such a case, the person will be detected in the next cycle, which can be very close, scanning the infrared sensor 9.
  • the panel 8 which serves for the detection of such stimuli.
  • the stimulus LED 7 can be replaced by the bulb 1, that is to say that the panel 8 will detect a sudden rise in the overall level of illumination. It can also be expected that it is the infrared sensor 9 which detects, on an area of its image, the on or off state of the bulb 1.
  • the calculation block 12 controls the emission of an alarm signal, for example here the ignition, preferably flashing, of an LED 21 on a console, or management.
  • an alarm signal for example here the ignition, preferably flashing, of an LED 21 on a console, or management.
  • a voice synthesis circuit command warning of the failure may also be provided.
  • the LED 21 is also used to signal the detection of a person.
  • the LED 21 can be bicolor with for example green ignition in the latter case and priority ignition in red in case of failure detection of a component.
  • An alarm message is thus transmitted to a network.
  • management center 50 connected to the network 100, to request the dispatch of a repairman and / or notify a local manager, if it is not provided the LED 21 or an output circuit of equivalent man-machine relations.

Landscapes

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

Claims (8)

  1. System zur automatischen Beleuchtungsverwaltung, das eine Gruppe von Schaltungen aufweist, die aus einer Zentraleinheit (10) und mindestens einem Ereignissensor (9), um es zu aktivieren, besteht, damit die Zentraleinheit eine Zustandsänderung eines Schalters (2) zur Stromversorgung einer Quelle (1) der Beleuchtung eines Volumens steuert, und in dem Ausfalldetektionsmittel (15, 15S, 16, 16S, 17, 18, 18S) vorgesehen sind, die dazu eingerichtet sind, mindestens eine Ausfallart mindestens eines Bestandteils der Gruppe zu detektieren, und dazu eingerichtet sind, einen Sicherheits-, Übergangs- oder Haltebefehl zum Übergang in einen bzw. Halten in einem Einschaltzustand der Beleuchtungsquelle (1) zu erzeugen, dadurch gekennzeichnet, dass die Ausfalldetektionsmittel einen Spannungskomparator (15, 15S) aufweisen, der dazu eingerichtet ist, eine Versorgungsspannung (5) des mindestens einen Ereignissensors (9) mit einer Referenzspannung (15S) zu vergleichen und einen Ausfall zu detektieren, falls das Vergleichsergebnis eine Vergleichsabweichung liefert, die einen vorbestimmten Grenzwert überschreitet.
  2. Beleuchtungssystem nach Anspruch 1, wobei die Zentraleinheit (10) den Übergang aus einem Ausschaltzustand in den Einschaltzustand durch Unterdrückung einer Sperrspannung des Schalters (2) steuert, welche diesen in einem geöffneten Zustand gehalten hat.
  3. System nach einem der Ansprüche 1 und 2, wobei die Zentraleinheit (10) Ablaufsteuerungsmittel (12, 14) aufweist, die dazu eingerichtet sind, zyklisch ein Einschalten einer Testlichtquelle (1, 7) zu steuern, die dazu vorgesehen ist, von einem Umgebungslichtpegelsensor (8) detektiert zu werden, der am Ausgang an die Zentraleinheit (10) angeschlossen ist, deren Komparatorschaltungen (18, 18S) dazu eingerichtet sind, den Umgebungslichtpegel mit einem Schwellenwert in einem Speicher (18S) zu vergleichen und eine Steuerung des Schließens des Schalters (2) zu gestatten, falls der Schwellenwert unterschritten wird.
  4. System nach Anspruch 3, wobei, während die Beleuchtungsquelle (1) auch als die Testlichtquelle dient, die Zentraleinheit (10) dazu eingerichtet ist, zyklisch das Schließen des Schalters (2) zu steuern, um das Einschalten der Beleuchtungsquelle (1) mittels des mindestens einen Ereignissensors (9) zu detektieren.
  5. System nach einem der Ansprüche 1 bis 4, wobei die Ausfalldetektionsmittel einen Komparator (17) aufweisen, der dazu eingerichtet ist, den Zustand des Schalters (2) zu detektieren und ihn mit dem Sicherheitsbefehl zu vergleichen, und im Falle einer Nichtübereinstimmung das Schließen eines Notschalters (2A) zu steuern, um die Beleuchtungsquelle (1) mit Strom zu versorgen.
  6. System nach einem der Ansprüche 1 bis 5, wobei die Ausfalldetektionsmittel Schaltungen (21, 30) zur Signalisierung eines solchen Ausfalls umfassen.
  7. System nach Anspruch 6, wobei die Signalisierungsschaltungen Datenübertragungs-Schnittstellenschaltungen (30) umfassen, die dazu eingerichtet sind, einen Ausfallalarm zu Verwaltungsmitteln (50) zu übertragen.
  8. System nach Anspruch 7, wobei die Schnittstellenschaltungen (30) dazu eingerichtet sind, eine Übertragung über ein Datenübertragungsnetz (100) zu einem Verwaltungszentrum (50) durchzuführen.
EP08291209A 2007-12-20 2008-12-18 Gesichertes System zur Beleuchtungsverwaltung Active EP2073608B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0708960A FR2925653B1 (fr) 2007-12-20 2007-12-20 Systeme securise de gestion d'eclairage

Publications (2)

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EP2073608A1 EP2073608A1 (de) 2009-06-24
EP2073608B1 true EP2073608B1 (de) 2013-03-13

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FR (1) FR2925653B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016193199A1 (en) * 2015-06-05 2016-12-08 Philips Lighting Holding B.V. Lighting system fault diagnostic apparatus
CN106710090A (zh) * 2017-02-22 2017-05-24 深圳怡化电脑股份有限公司 一种设备维护系统及方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001803A (en) * 1975-10-01 1977-01-04 Lombardo Dominick A Lighting devices
FR2463565A1 (fr) * 1979-08-10 1981-02-20 Bernard Rene Dispositif photoelectrique automatique
US4996463A (en) * 1989-08-21 1991-02-26 Victor Horowitz Auxiliary lighting system for high intensity discharge lamp
US6121875A (en) * 1996-02-08 2000-09-19 Inform 2000 Monitoring and alerting system for buildings
US5821853A (en) * 1996-11-05 1998-10-13 Robert Gustavson Ambient light monitoring system
GB0005184D0 (en) * 2000-03-04 2000-04-26 Timeguard Limited Time-delay switches
AU2001285208A1 (en) * 2000-08-22 2002-03-04 Acuity Brands Inc. Luminaire diagnostic and configuration identification system

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EP2073608A1 (de) 2009-06-24
FR2925653A1 (fr) 2009-06-26
FR2925653B1 (fr) 2010-03-26

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