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Número de publicaciónWO2012107348 A1
Tipo de publicaciónSolicitud
Número de solicitudPCT/EP2012/051781
Fecha de publicación16 Ago 2012
Fecha de presentación2 Feb 2012
Fecha de prioridad9 Feb 2011
Número de publicaciónPCT/2012/51781, PCT/EP/12/051781, PCT/EP/12/51781, PCT/EP/2012/051781, PCT/EP/2012/51781, PCT/EP12/051781, PCT/EP12/51781, PCT/EP12051781, PCT/EP1251781, PCT/EP2012/051781, PCT/EP2012/51781, PCT/EP2012051781, PCT/EP201251781, WO 2012/107348 A1, WO 2012107348 A1, WO 2012107348A1, WO-A1-2012107348, WO2012/107348A1, WO2012107348 A1, WO2012107348A1
InventoresMichael Kennedy
SolicitanteAlba Innovations Limited
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos:  Patentscope, Espacenet
A control system
WO 2012107348 A1
Resumen
A control system comprising a main control unit and a first electrically powered device; the first electrically powered device comprising an electrically powered light producing element. The control system further comprises a detector for detecting the status of electrically powered lights in a zone of a building adjacent the first electrically powered device. The main control unit is responsive to the detector detecting powering down of one or more of the electrically powered lights in the zone adjacent the first electrically powered device for activating the first electrically powered device for activating the light producing element therein. A two-wire communicating system connects the first electrically powered device and the detector with the main control unit, the two-wire communicating system being adapted for powering the first electrically powered device.
Reclamaciones  (El texto procesado por OCR puede contener errores)
Claims:
1. A control system for controlling a first electrically powered device comprising an emergency light of a monitoring system, the control system comprising a main control unit and the first electrically powered device; the first electrically powered device comprising an electrically powered light producing element; the control system further comprising a detecting means for detecting the status of electrically powered lights in a zone of a building adjacent the first electrically powered device; the main control unit being responsive to the detecting means detecting powering down of one or more of the electrically powered lights in the zone adjacent the first electrically powered device for activating the first electrically powered device for activating the light producing element therein, and a two-wire
communicating system communicating the first electrically powered device and the detecting means with the main control unit, the two-wire communicating system being adapted for powering the first electrically powered device.
2. The control system according to claim 1 in which the detecting means comprises an electrical power supply detector for detecting the absence of an electrical power supply being supplied to at least one of the electrically powered lights in the zone adjacent the first electrically powered device.
3. The control system according to claim 1 wherein the detecting means comprises one of a voltage detector and a current detector.
4. The control system according to claim 1 wherein the two-wire communicating system is adapted to carry a low voltage power supply, preferably of not more than 48 volts, and most preferably 24 volts.
5. The control system according to claim 1 wherein the two-wire communicating system is adapted for carrying a DC power supply.
6. The control system according to claim 1 wherein a plurality of first electrically powered devices are coupled to the main control unit by the two-wire communicating system, at least some of the electrically powered devices arranged to be located in respective different zones.
7. The control system according to claim 6 wherein a plurality of detecting means are provided, one detecting means being provided for detecting powering down of at least some of the electrically powered lights in respective ones of the different zones.
8. The control system according to claim 6 wherein each first electrically powered device is battery powered, and preferably, each first electrically powered device comprises a rechargeable battery, and advantageously, each first electrically powered device comprises a charging means for charging the rechargeable battery thereof.
9. The control system according to claim 6 wherein a switch means is provided for switching power to the light producing element of each first electrically powered device.
10. The control system according to claim 9, further comprising a secondary control unit for each zone, addressable by the main control unit and wherein the switch means of each first electrically powered device in a zone is controlled under the control of the corresponding secondary control unit.
1 1. The control system according to claim 7 wherein each detecting means comprises a unique address for facilitating communication between the main control unit and the respective detecting means, and advantageously, each detecting means is adapted to permit reading of a signal indicative of the absence of a power supply to the electrically powered lights of the corresponding zone.
12. The control system according to claim 1 further comprising a plurality of second electrically powered devices connected to the main control unit by the two-wire
communicating system, and preferably, at least some of the second electrically powered devices are powered by the power supply on the two-wire communicating system.
13. The control system according to claim 12 wherein at least one of the second electrically powered devices comprises an alarm sounder.
14. The control system according to claim 1 comprising a plurality of monitoring means, the monitoring means arranged to communicate with the main control unit through the two- wire communicating system.
15. The control system according to claim 13 wherein at least one of the monitoring means comprises one of a smoke detector or a break glass unit.
16. The control system according to claim 15 wherein the main control unit is responsive to a signal from a smoke detector unit indicative of the detection of smoke and to a signal from a break glass unit indicative of the activation of the break glass unit for activating the alarm sounder.
17. A method for controlling a first electrically powered device comprising an emergency light of a monitoring system, the method comprising:
providing a control system comprising a main control unit and the first electrically powered device, and a detecting means for detecting powering down of at least one of a plurality of electrically powered lights in a zone adjacent the first electrically powered device; and communicating the first electrically powered device and the detecting means with the main control unit on a two-wire communicating system and powering the first electrically powered device by a power supply on the two-wire communicating system.
Descripción  (El texto procesado por OCR puede contener errores)

"A control system"

The present invention relates to a control system for controlling an emergency light of a monitoring system.

According to the invention there is provided a control system for controlling a first electrically powered device comprising an emergency light of a monitoring system, the control system comprising a main control unit and the first electrically powered device; the first electrically powered device comprising an electrically powered light producing element the control system further comprising a detecting means for detecting the status of electrically powered lights in a zone of a building adjacent the first electrically powered device; the main control unit being responsive to the detecting means detecting powering down of one or more of the electrically powered lights in the zone adjacent the first electrically powered device for activating the first electrically powered device for activating the light producing element therein, and a two-wire communicating system communicating the first electrically powered device and the detecting means with the main control unit, the two-wire communicating system being adapted for powering the first electrically powered device.

In one embodiment of the invention the detecting means comprises an electrical power supply detector for detecting the absence of an electrical power supply being supplied to at least one of the electrically powered lights in the zone adjacent the first electrically powered device. Preferably, the detecting means comprises one of a voltage detector and a current detector. In another embodiment of the invention the two-wire communicating system is adapted to carry a low voltage power supply. Preferably, the two-wire communicating system is adapted for carrying a power supply of voltage not more than 48 volts, and advantageously, the two- wire communicating system is adapted for carrying a power supply of 24 volts. Ideally, the two-wire system is adapted for carrying a DC power supply.

In another embodiment of the invention a plurality of first electrically powered devices are coupled to the main control unit by the two-wire communicating system, and preferably, at least some of the electrically powered devices are located in respective different zones. In a further embodiment of the invention a plurality of detecting means are provided, one detecting means being provided for detecting powering down of at least some of the electrically powered lights in respective ones of the zones.

In another embodiment of the invention each first electrically powered device is battery powered, and preferably, each first electrically powered device comprises a rechargeable battery, and advantageously, each first electrically powered device comprises a charging means for charging the rechargeable battery thereof, and advantageously, a switch means is provided for switching power to the light producing element of each first electrically powered device. In another embodiment of the invention the system comprises a secondary control unit for each zone, addressable by the main control unit and the switch means of each first electrically powered device in a zone is controlled under the control of the corresponding secondary control unit.

In a further embodiment of the invention each detecting means comprises a unique address for facilitating communication between the main control unit and the respective detecting means, and advantageously, each detecting means is adapted to permit reading of a signal indicative of the absence of a power supply to the electrically powered lights of the corresponding zone. In a further embodiment of the invention a plurality of second electrically powered devices are connected to the main control unit by the two-wire communicating system, and preferably, at least some of the second electrically powered devices are powered by the power supply on the two-wire communicating system. In a further embodiment of the invention at least one of the second electrically powered devices comprises an alarm sounder.

In a further embodiment of the invention a plurality of monitoring means are provided, and the monitoring means communicate with the main control unit through the two-wire communicating system.

In one embodiment of the invention at least one of the monitoring means comprises a smoke detector, and in another embodiment of the invention at least one of the monitoring means comprises a break glass unit.

Advantageously, the main control unit is responsive to a signal from the smoke detector unit indicative of the detection of smoke and to a signal from the break glass unit indicative of the activation of the break glass unit for activating the alarm sounder.

Additionally the invention provides a method for controlling a first electrically powered device comprising an emergency light of a monitoring system, the method comprising providing a control system comprising a main control unit and the first electrically powered device, and a detecting means for detecting powering down of at least one of a plurality of electrically powered lights in a zone adjacent the first electrically powered device, and communicating the first electrically powered device and the detecting means with the main control unit on a two-wire communicating system and powering the first electrically powered device by a power supply on the two-wire communicating system.

The invention will be more clearly understood from the following description of an

embodiment thereof, which is given by way of example only, with reference to the

accompanying drawings, in which:

Fig. 1 is a schematic representation of a control system according to the invention,

Fig. 2 is a block representation of a first electrically powered device of the control system of Fig. 1 ,

Fig. 3 is a block representation of a second electrically powered device of the control system of Fig. 1 , Fig. 4 is a block representation of a monitoring device of the control system of Fig. 1 ,

Fig. 5 is a block representation of another monitoring device of the control system of Fig. 1 , Fig. 6 is a block representation of a combined smoke detector and alarm sounder unit of the control system of Fig. 1 , and

Fig. 7 is a block representation of a current detector of the control system of Fig. 1. Referring to the drawings, there is illustrated a control system according to a preferred embodiment of the invention, indicated generally by the reference numeral 1 , for controlling and monitoring a building for detecting the presence of fire or smoke in the building, and also for controlling the operation of emergency lighting in the building in response to failure of a power supply to the lighting in the building. The control system 1 comprises a main control unit 2 for controlling the system 1. A plurality of first electrically powered devices, namely, electrically powered emergency light units 4, all of which may be located in the same zone of the building, or in different zones of the building, or some can be located in one zone of a building, and some in another zone of the building, and others still in other zones of the building. In this embodiment of the invention the building is divided into three zones 5, one of which zones 5, namely, a zone 5a comprises two emergency light units 4, while the other two zones 5b and 5c each comprise one emergency light unit 4. A two-wire communication system 7 connects the emergency light units 4 to the main control unit 2, and a 24-volt DC power supply is also provided on the two-wire communicating system 7 for powering the emergency light units 4 as will be described below. In the embodiment shown in Figure 1 , the two-wire system 7 is shown as being connected at one end to outbound terminals of the main control unit 2 and at its other to return terminals of the main control unit. However, it will be appreciated that in alternative embodiments, with appropriate switching circuitry in the main control unit and peripheral devices on the two-wire system, common outbound and return terminals could be employed.

A plurality of second electrically powered devices, which in this embodiment of the invention are alarm sounders 9, namely, piezoelectric sounders for producing an alarm siren are also connected to the main control unit 2 through the two-wire communication system 7 and are powered by the 24-volt DC supply on the two-wire communication system 7. One alarm sounder 9 is provided in each zone 5.

A plurality of monitoring means, which in this embodiment of the invention comprise smoke detectors 10 and break glass units 1 1 are also connected to the main control unit 2 through the two-wire communication system 7. In this embodiment of the invention two smoke detectors 10 and two break glass units 1 1 are provided in zone 5a, while one smoke detector 10 and one break glass unit 1 1 are provided in each of the zones 5b and 5c.

Combined smoke detector and alarm sounder units 12 are also connected to the main control unit 2 through the two-wire communication system 7. In this embodiment of the invention only two combined smoke detector and sounder units 12 are provided, one being provided in each of zones 5a and 5c. The alarm sounders of each combined smoke detector and alarm sounder unit 12 is powered by the 24-volt supply on the two-wire communication system 7. Detecting means comprising three current detectors 15 for detecting the powering down of respective lighting circuits in each of the three zones 5 are also connected to the main control unit 2 through the two-wire communicating system 7. The current detectors monitor current flowing from circuit breakers 16 to respective lighting circuits 17 to the respective zones 5 for detecting the powering down of the lighting circuits 17. The current detectors 15, the circuit breakers 16 and the lighting circuits 17 of the zones 5a, 5b and 5c are identified by the reference numerals and letters 15a, 15b and 15c, 16a, 16b and 16c and 17a, 17b and 17c, respectively.

The main control unit 2 is responsive to each current detector 15 indicating the powerirg down of the light circuit 17 to the corresponding zone 5 for activating the emergency light units 4 in that corresponding zone 5. Additionally, the main control unit 2 is responsive to each smoke detector 10 detecting smoke in the corresponding zone 5 for operating the alarm sounders 9 in the corresponding zone 5 to produce an alarm siren sound. The main control unit 2 is also responsive to each break glass unit 1 1 being activated for operating the alarm sounders 9 in the corresponding zone 5.

Turning now to the emergency light units 4, and referring in particular to Fig. 2, each emergency light unit 4 comprises a light producing element 18, which in this embodiment of the invention comprises one or more light emitting diodes. Each light producing element 18 is battery powered by a rechargeable battery 19 located in the emergency light unit 4 and which is recharged by a battery charger 20 also located in the emergency light unit 4 and powered from the 24-volt DC power supply on the two-wire communicating system 7. Power is supplied to the light producing element 18 through an activating switch 22 by the rechargeable battery 19. A secondary control means, namely, a secondary control unit 24 located in each emergency light unit 4 controls operation of the activating switch 22 in response to an activating signal from the main control unit 2. The secondary control unit 24 of each emergency light unit 4 is also powered by the 24-volt power supply on the two-wire communicating system 7 and includes a unique address code so that the respective emergency light units 4 can be addressed individually by the main control unit 2. In this embodiment of the invention the secondary control unit 24 of each emergency light unit 4 is responsive to the level of current in the two-wire communicating system 7 for determining whether or not to operate the battery charger 20 to charge the corresponding rechargeable battery 19. The secondary control unit 24 of each emergency light unit 4 is responsive to the current being drawn through the two-wire communicating system 7 exceeding a predetermined current value for preventing charging of the rechargeable battery 19. This avoids any danger of an excessive draw of power from the two-wire communicating system 7 in the event of an extended power failure, and all the batteries 19 of the emergency light units 4 requiring charging simultaneously. Thus, this feature ensures that the rechargeable batteries of the emergency light units 4 are either sequentially charged, or sequentially charged in pairs or the like.

Referring now to Fig. 3, each alarm sounder 9 comprises a piezoelectric sounder 25 which is powered by the 24-volt DC power supply on the two-wire communicating system 7 through an activating switch 26. A secondary control means, namely, a secondary control unit 28 which is addressable by the main control unit 2 controls the operation of the activating switch 26 in response to a signal from the main control unit 2. The secondary control unit 28 of each alarm sounder 9 is powered by the 24-volt DC power supply on the two-wire

communicating system 7 and comprises a unique code, so that the respective alarm sounders 9 can be individually addressed and activated by the main control unit 2.

Referring now to Fig. 4, each smoke detector 10 comprises a smoke detecting element 30 and a secondary control means, namely, a secondary control unit 31 , which reads signals from the smoke detector element 30 which are indicative of the presence or absence of smoke having been detected by the smoke detecting element 30. The secondary control unit 31 stores the read signals for subsequent reading by the main control unit 2. In this embodiment of the invention the secondary control units 31 of the alarm sounders 8 comprise respective unique address codes for facilitating individual addressing of the smoke detectors 10 for reading the status signals stored in the corresponding secondary control units 31. The smoke detector elements 30 and the secondary control units 31 are powered by the 24-volt DC power supply on the two-wire communicating system 7.

Referring now to Fig. 5, each break glass unit 1 1 comprises a button activated switch 33 which is activated by depressing a button 34 on breaking a glass panel (not shown) of the break glass unit 1 1. A secondary control means, namely, a secondary control unit 35 monitors the status of the switch 33 and stores the status thereof. The secondary control units 35 of the break glass units 11 comprise respective unique address codes so that the secondary control circuits 35 of the break glass units 1 1 can be individually addressed by the main control unit 2 for reading the current status of the button activated switch 33 therein. The secondary control units 35 of the break glass units 1 1 are powered by the 24-volt DC power supply on the two-wire communicating system 7.

Referring now to Fig. 6, each combined smoke detector and alarm sounder unit 12 comprises a smoke detecting element 37 and a piezoelectric alarm sounder 38. The piezoelectric alarm sounders 38 of the respective combined smoke detector and sounder units 12 are powered from the 24-volt DC power supply on the two-wire communicating system 7 through an activating switch 39. The activating switch 39 is responsive to a signal from the smoke detecting element 37 indicative of smoke having been detected. A secondary control means, namely, a secondary control unit 40 in each combined smoke detector and alarm sounder unit 12 reads signals from the smoke detecting element 37 and stores the signals for subsequent reading by the main control unit 2. The secondary control unit 40 of each combined smoke detector and alarm sounder unit 12 comprises a unique address so that the respective combined smoke detectors and alarm sounder units 12 are individually addressable by the main control unit 2. The activating switch 39 of each smoke detector and alarm sounder unit 12 is also responsive to a signal from the secondary control unit 40 for applying power to the piezoelectric sounder 38 in response to a corresponding signal from the main control unit 2.

Referring now to Fig. 7, in this embodiment of the invention each current detector 15 comprises a current sensor 43 which is coupled to the output side of the circuit breaker 16 of the corresponding light circuit 17 for detecting the absence of current in the corresponding light circuit 17 in the event of a powering down of the light circuit 17. A secondary control means, namely, a secondary control unit 44 located in each current detector 15 stores the status of the current in the corresponding lighting circuits 17 for subsequent reading by the main control unit 2. The secondary control units 44 of the current detectors 15 comprise respective unique address codes to facilitate addressing of the current detectors 15, for reading of the status of the current in the lighting circuits 16 by the main control unit 2.

In use, the 24-volt DC supply is applied to the two-wire communicating system 7 under the control of the main control unit 2. The main control unit 2 monitors the smoke detectors 10, the break glass units 11 and the combined smoke detector and alarm sounder units 12 as well as the current detectors 15. On the main control unit 2 detecting the powering down of a lighting circuit 17 from the corresponding current detector 15, the main control unit 2 outputs a signal to the one or more of the emergency light units 4 in the zone 5 of the building, in which the lighting circuit 17 has been detected as being powered down, for powering up the emergency light unit or units 4 in that zone 5. In the event of the main control unit reading a signal from any of the smoke detectors 10 and/or the break glass units 11 and/or the combined smoke detector and alarm sounder units 12 indicative of the detection of smoke in any of the zones 5 of the building, the main control unit 2 outputs a signal to the alarm sounder or sounders 9 in that zone 5 for activating the alarm sounders 9 in that zone.

In the event of a power failure extending over a relatively long period of time and the rechargeable batteries 19 of the emergency light units 4 in some or all of the zones 5 requiring recharging, on the reinstatement of power to the two-wire communicating circuit 7, the secondary control units 24 control the operation of the battery chargers 20 in response to the current being drawn in the two-wire communicating system 7, so that in the event of the current being drawn in the two-wire communicating system 7 exceeding a predetermined current value, charging of the corresponding rechargeable battery 19 is prevented. This ensures that the rechargeable batteries 19 are sequentially charged, and therefore avoids an excessive current being drawn on the two-wire communicating system 7.

While the control system 1 has been described as comprising three zones, the control system according to the invention may operate with one zone or any number of zones within reason.

It will of course be appreciated that each zone may comprise any number of emergency light units from one upwards, and any number of alarm sounders from one upwards. It is also envisaged that not every zone will comprise a break glass unit, and where a zone is provided with a break glass unit, it may be provided with any number of break glass units.

Needless to say, any other suitable power supply detectors may be provided for detecting powering down of the respective lighting circuits. Additionally, it will be appreciated that the main control unit may also be responsive to signals read from the smoke detectors 10 ard/or the break glass units 11 for activating the emergency light units in the relevant respective zones. In further variants of the above-described embodiments, as well as the lighting units 4, the main control unit 2 can be arranged to control exit signage around a given installation either by connecting such signage to the two-wire network 7 or by any other means. By contrast with lighting units, however, the secondary control unit for exit signage will be more likely to maintain exit signage on than only switching on such signage in an emergency.

The invention is not limited to the embodiment hereinbefore described, which may be varied in construction and detail.

Citas de patentes
Patente citada Fecha de presentación Fecha de publicación Solicitante Título
WO1994023402A1 *29 Mar 199413 Oct 1994Gilbert Alain Lindsay GarrickVersatile fire alarm, evacuation and emergency lighting system
US5365145 *9 Ago 199315 Nov 1994Gael, Inc.Emergency lighting system
US20060176167 *25 Ene 200510 Ago 2006Laser Shield Systems, Inc.Apparatus, system, and method for alarm systems
Otras citas
Referencia
1None
Clasificaciones
Clasificación internacionalH02J9/06, H05B37/02
Clasificación cooperativaY04S20/18, Y02B90/228, H02J13/0003, H02J9/02, H05B37/0263, H05B37/0254
Clasificación europeaH02J9/02, H02J13/00E
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