GB2187018A - Hazzard or security monitoring device - Google Patents
Hazzard or security monitoring device Download PDFInfo
- Publication number
- GB2187018A GB2187018A GB08706020A GB8706020A GB2187018A GB 2187018 A GB2187018 A GB 2187018A GB 08706020 A GB08706020 A GB 08706020A GB 8706020 A GB8706020 A GB 8706020A GB 2187018 A GB2187018 A GB 2187018A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alarm
- signal
- detector
- condition
- circuitry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/06—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using power transmission lines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/0005—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving power plugs or sockets
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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
- H05B47/10—Controlling the light source
- H05B47/16—Controlling the light source by timing means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00019—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using optical means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Alarm Systems (AREA)
Abstract
Hazzard or security monitoring circuitry is located in a housing (2), (Figure 1), having at one end a connector (3) for insertion into a standard lamp socket 52 and at its other end a socket (4) to receive a lamp 53 The monitoring circuitry may be activated by turning a wall switch 54 for the lamp 53 off then back on again within a predetermined period, the lamp 53 also then being energised at half strength. A fire, gas or smoke detector may signal to one or more remote receivers 51 by signals superimposed on the main supply, via a light or infra-red beam, via radio, or via an induction loop, (Figure 4). In a system for a hospital, the detector (71), (72), (Figure 4), may operate a remote timer (79) which activates a main alarm system unless a cancel button (77) is operated with a predetermined time to acknowledge the alarm signal. The circuitry in the housing may alternatively include a motion detector for sensing an intruder, (Figure 5). <IMAGE>
Description
SPECIFICATION
Electrical devices
The present invention relates to a electrical device and, more specifically, to electrical devices which perform monitoring/alarm functions.
According to a first aspect ofthe invention, there is provided an electrical device comprising a body adapted to be interposed between a light and a light socket, the device containing circuitryfor monitoring a security condition or hazzard condition in the environment in which the device is located.
The device may house a fire, gas or smoke detector and the circuitry be arranged to provide a signal exteriorly of the device when fire or smoke is detected; the detector may be sensitive to a particular gas or gases so that, for example, the device can be used to detect the presence of poisonous or otherwise dangerous gases in the atmosphere.
The device may be used in association with a remote alarm or relaydevice orsimilartowhich it transmitssignalsinanyoneofa numberofsuitable ways, for example, by an infra red transmitter/ receiver link or by signals modulated onto the mains waveform at the detector and transmitted via the mains wiring to the remote device. According to the particular application in question,this remote device may serve a number of functions, for example providing visual and audible warnings e.g. by operating conventional fire alarm devices and/or to transmit the state ofthe monitored condition or an alarm signal to a location offsite e.g., by use of an automatictelephone dialler.
Where, in any of the aspects of the invention, it is desiredto have the device operable in a numberof modes, the device may contain circuitry to facilitate the change in mode without having to provide additional wiring or devices to control the device. Thus, for example, the circuitry may comprise circuitry responsiveto the presence of a mains voltage applied to the device for selecting the mode of operation, for example the desired mode of operation may be initiated by turning the light switch associated with a light socket on, then briefly offthen on again, the circuitry responding to this sequence to set up the desired mode of operation.
The invention will be further described byway of example with reference to the accompanying drawings in which:
Figure lisa schematic sectional view of the housing of the device used in the embodiments of Figures 2to5;
Figures2 and 3A and 3B are schematic block dia- grams of a fire alarm incorporating an embodiment ofthe present invention;
Figure 4 is a schematic block diagram of a fire detection system incorporating a fifth embodiment of the present invention;
Figure 5is a schematic block diagram of a fire alarm system incorporating a sixth embodiment of the present invention;
Figure 1 shows in section the housing used in the devices of Figure 2 to 5.The housing comprises a body 1 of, say, plastics material having, at one end, a standard bulbfitting 4such as a bayonet and at its other end a corresponding socket 3 whereby the device may be interposed between an existing light bulb and socket. The device is preferably of relatively short length so that it does not place the bulb so far forward as to contact any cover or the like with which the bulb may be provided. The device 1 incorporates a circuit board 5 incorporating circuitry 10 which performs a security or hazard monitoring function.
Figures 2 and 3A and 3B show the forms offire or smoke detection systems incorporating devices embodying the present invention.
There are currently many smoke detection devices avaiiable which employ low drain standby current consumption from an internal battery. The life expectancy of this internal battery depends very largely on the construction of the cell having due regard for the electrolyte and the internal resistance of the cell.
Relying on a battery based system is not satisfactory unless the detector is regularly checked.
Alarms intended primarilyforthe domestic market tend to have a rather high false alarm rate. During the course ofthe day in the average home a variety of other quite normal activities can result in the detec torgoing into alarm condition e.g. cooking, painting and entertaining. In general this problem is not one of location ofthe detector, for plainly it is monitoring the air and it works. Neither is it one of sensitivity for there is an atmospheric change to be detected.
Additionally the detector, whilst active during the timethatthe household is most vulnerable is unable to arouse the sleeping occupants because the warning note from the detector is usually required to pass through at least one closed door on its way to the sleeper. Installations in Hotels and Guest Houses are required to have bells or warning devices which are clearly audible from the inside of each individual hotel room with all the corridorfire doors closed and the room door secured.
The embodiment of the invention shown in Figure 2 used a detector in accordance with the present invention in a fire alarm system also comprising a number of receiver/a larm units 51.
The device 50 is fitted into light socket 52 after re movalofthelamp53fromthe holderoftheceiling fitting in which it isto be used and the lamp 53 isthen replaced.
The circuitry in device 50 is so arranged that when the fire detection function is not required, the lamp can be operated normally from the existing wall switch 54. The circuitry 101 (Figure 3A) within the device 50 includes a circuit 102 for monitoring the incoming mainssupplyand a circuit 103 for deriving low voltage DC for use by the device 50 and for controlling the AC mains voltage applied to the bulb 53.
In the normal, non-detection mode, the circuit 103 permits the mains su pplyto the bulb 53 to be controlled by the wall switch 54. To activate the detec- tion mode, the user operates the wall switch 54so that the bulb 53, assuming it is already switched on, is rapidly switched offthen on again. This would normally be done by the last person retiring that evening and the circuit 102 is suitably designed to detect this switching pattern ofthe incoming mains and, in responseto detecting it, to enterthe detection mode.
The device 50 acknowledges this instruction by the circuit 102 causing an LED 104to illuminate on the body of the device and the circuit 103 causing the lamp 53 in its holderto glow at approximately half strength.
At this point convection currents generated by the heatfrom the bulb 53 causes the air locallyto be con- vected into ventilation holes (not shown in Figure 1) in the body 1 ofthe device 50. Once inside the air is channeled into a small conventional ionisation chamber 105 where the content of the air is examined.
In the eventofthe chamber 103 detecting a combustion gas content and triggering an alarm condition, this condition is not made by an on board deviceorsounder. Instead a circuit 106 which isa mains connected coded carrier generator produces a signal to be superimposed on the mains. This coded ca rrier generatorortransmitter causes asmall, around 2mWtransmission,atapproximately250khz to be introduced onto the mains wiring 26 to which the device is connected.
In each ofthe rooms occupied by the sleeping personsthere is plugged one ofthe receivers 51. Each of these receivers is connected to a mains socket 57 and carries an illuminating lamp 11 Oto indicate connec- tion. Internally the circuitry 112 ofthe receiver is designed to continuously monitor the incoming mains.
When the incoming means carried the coded transmission from the detector 50, the circuit 112 detects its occurrence and signals the circuitry 111 of the receiverto activate an alarm sounder 113.
On investigation of the cause ofthe alarm each of the remote bedside receivers can be reset by means of a simple low-profile button 114. The system is then active and until required again will remain quiescent. In the morning the system can be restored to normal 'no detection' working by simply switching off the light into which the detector 50 is plugged.
Thus by the single strategically placed detector, a number of separate highly audible sounders can be activated in five individual areas inside the building each with their doors shut and at some distance from the detector.
Figure4shows afurtherform of smoke orfire detectorfor use in applications such as hospital wards.
Conventional smoke, combustion gas or similar early warning systems are extremely prone to false alarm calls due mainly to the concentrated levels of air-bournevapourised liquids, e.g. ether, used in the normal course ofthe hospital's activity.
The embodiment of Figure 4 is intended to provide a single and cost-effective means of reducing problems associated with hospital-type environments.
In the system according to Figure 4 each ward and other area to be monitored is fitted with a detector transponder (70) similarto the detector 50 of Figures 2and3.
This detector 70 is used place of the normal ward monitoring equipment. In operation the system uses an ionisation chamber 71 in the detector 70 to monitorthe air and vapours air bourne in that vicinity. In the event of an alarm condition being detected the system alarm control circuit 72 energises transmit ter73to signal the dutyward sisterwhowould normally be in attendance of the fact. She would then investigate the cause and should the occasion demand so break the local break-glass contactto formalise a call on the house system to summon the local fire brigade.
In essence the evaluation ofthreatfrom any given alarm would be the duty of the ward sister or staff nurse and the decision as to whether or not to call the local services would be her responsibility.
In responding to the alarm warning the duty sister would be required to acknowledge receipt of the call by depressing a button within a specified period of time, failing which the secondary system would automaticallydefaultto a normal main alarm alert.
The system of signalling to the duty sister would be by means of either a mains transponder 74 (as in
Figures 2 and 3), an induction loop transmitter 75, an infra-red transmitter 76 or a similar device to activate a corresponding receiver (74',75',76') which she would normally be expected to carry about her person.
On signalling of an alarm condition, a timer 49 is activated and unless the condition is cancelled by the nurse pressing a cancel button 77 or similar arrange- ment beforethetimertimes out a signal issentvia line 78 to the main alarm system capable of signalling direct to the emergency services.
Inthismannerall alarmswould bedeatwithloc- ally and the incidence offalse alarm virtually eradicated. Only genuine emergencies would result in the attendance of the emergency services but with the safety override that should an emergency crop up where the sister was completely occupied coping with it and either unable orforgetful to call for assistance then the system would automatically do so when thetimer79 times out atthe expiry ofthe response period.
Figure 5 shows a security alarm system incorporating a device 80 according to the present invention and intended to provide a low cost userinstallable system generally for use in a wide range of operational conditions.
The user installs the device 80 into a lamp socket nearest to the desired point of exit from the premises and inserts the previously removed bulb into the socket 81. On leaving the protected premises, to arm the device the owner switches on the lamp by using the normal wall switch then turns it briefly off, then on again. This switching pattern is detected by a mains interruptsensor circuit 82 which activates an alarm module83which responds by emitting an audibie note for say, 25 seconds during which time the owner vacates the premises; the alarm module incorporates a timer circuit to define this delay.
When, atthe end ofthis 25 second period the timer circuit times out alarm module goes automatically into the guard mode. In the device 80, a security condition sensor 84 such as a conventional infra-red motion detector monitors the security condition. If at anytime during operation the detector detects an abnormal security condition e.g. movement is detected, the alarm module 83 waits, say 25 seconds and then triggers into operation an alarm signal transmitter 85 which may, as shown be a mains carriertransmitterwhich injects a high frequency coded signal onto the mains supply via the devices power supply unit. This signal is picked up by a remote alarm unit 180 which may be plugged into a mains socket and which incorporates a circuit 181 to monitorthe mains supply and detect and decode the alarm signal.The circuit 181 maytriggerone or more alarm devices such as a bell 182, aflashing light 183 and a telephone auto dialer 184. The auto dialler may be preset or keyed to call any selected number and transmit a recorded voice message or, e.g. an elec tronicalarm code. The numbercalled mightwell be the telephone number of the person being visited on this occasion.
Once activated the external alarm warning bell 183 will ring for a period of 30 minutes as determined by a bell timer 185 and then re-set automatically. The bell 183 maybe located within the unit 180 or, more usually, be fitted exterior to the premises.
On his return the owner entering through the front doorwill pass intothe protected area and immediately initiate the warning tone. He will then have 25 seconds to disarm the system. One waythatthe device 50 can be arranged to achieve this is to design the circuitry so that switching offthe lamp for app- roximatelyten seconds causes the device to cancel anyalarmaboutto betriggeredandcausethelamp to revert to normal operation. If desired the lamp switch could be key operated to provide a greater measure of security. Variety of supplementary devices could be introduced into the controlled network giving even wider domestic protection. For example additional detectors on doors or window intruder motion detectors in other remote areas. Specific asset protection could be provided e.g. for paintings, cups, medals, items of sentimental value, even drawers or wardrobes. With other sensors a fire hazard warning could be introduced with an alternativetelephone message or differing external warning note or flashing sign expansion.
Claims (20)
1. An electrical device comprising a body adapted to be interposed between a light and a light socket, the device containing circuitry for monitoring a security condition or hazzard condition in the environment in which the device is located.
2. Adevice accordingto claim 1,whereinthecircuitry includes a smoke gas orfiame detector.
3. A device according to claim 2, wherein the det ectorcomprisesan ionization chamber.
4. A device according to claim 2 or3 wherein the circuitry is arranged to produce an alarm signal when the detector detects smoke, gas or flame in ex cessofa predetermined level.
5. A device according to any one of claims 1 to 4 wherein the body contains an intrusion detector.
6. A device according to claim 5, wherein the intrusion detector is a radar, ultrasonic or infra-red detector.
7. A device according to any one of claims 1 to 6 wherein the circuitry is arranged so that its operation is armed by the pattern of energisation of the mains supply to the socket.
8. A device according to claim 7, wherein the cir- cuitry is arranged to detect a predetermined pattern of on and off periods of the mains supply.
9. A device according to any one of claims 1 to 8, wherein the device is arranged to transmit to a remote receiver a signal representative of said condition.
10. A device according to claim 9, wherein the device is arranged to transmit the signal via a light or infra-red beam or via radio.
11. A device according to claim 9 or 10wherein the device is arranged to transmit the signal via a link comprising an induction loop.
12. A device according to claim 9, wherein the device is arranged to transmit the signal via the mains supply to said socket.
13. A device according to claim 12, wherein the device includes a means forsuperimposing said signal as a high frequency signal onto the mains supply waveform.
14. A device according to any one of claims 9 to 13 in combination with at least one receiver, the or each receiver containing circuitryfor detecting and responding to the security-or hazard-condition.
15. Acombinationaccordingtoclaim 14, wherein the or each receiver contains means forgenerating an alarm signal.
16. A combination according to claim 15, wherein the alarm signal generating means includes an automatic telephone dialer for setting up a telephone call to send an alarm message.
17. Acombination according to claim 14or15, wherein the or each receiver includes a timing arrangement adapted to be set into operation on detection of a security or hazard condition, means for generating a personal alarm signal to alerta userofthecondition and means for generating an alternative alarm signal after a period determined bythetiming arrangement if the user has not responded to the personal alarm.
18. A com bi nation according to claim 17, wherein the alternative alarm signal is a general alarm.
19. A device according to any one of claims 1 to 13 or a combination according to any one of claims 14to 16 wherein the monitoring circulating is arran- ged to be armed by sensing a predetermined series of on and off periods ofthe mains supply to the device.
20. An electrical device according to claim 1 constructed and arranged to operate substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08706020A GB2187018B (en) | 1984-02-24 | 1987-03-13 | Hazzard or security monitoring device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB848404914A GB8404914D0 (en) | 1984-02-24 | 1984-02-24 | Controlling operation of light |
| GB848416622A GB8416622D0 (en) | 1984-02-24 | 1984-06-29 | Electrical device |
| GB08706020A GB2187018B (en) | 1984-02-24 | 1987-03-13 | Hazzard or security monitoring device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8706020D0 GB8706020D0 (en) | 1987-04-15 |
| GB2187018A true GB2187018A (en) | 1987-08-26 |
| GB2187018B GB2187018B (en) | 1988-02-10 |
Family
ID=27262284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08706020A Expired GB2187018B (en) | 1984-02-24 | 1987-03-13 | Hazzard or security monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2187018B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2205642A (en) * | 1987-05-21 | 1988-12-14 | Pittway Corp | Infrared actuated control switch assembly |
| FR2633760A1 (en) * | 1988-06-29 | 1990-01-05 | Am Chamrceun Rith | Detector of a leak of inflammable or toxic gases and/or of fire and network using this detector |
| WO1993017482A2 (en) * | 1992-02-29 | 1993-09-02 | Scantronic Limited | Power supply and smoke sensor for alarm system |
| GB2281139A (en) * | 1993-08-19 | 1995-02-22 | Martyn Christopher Hill | Gas detector and alarm |
| GB2315326A (en) * | 1996-07-15 | 1998-01-28 | Solar Wide Ind Ltd | Intruder alarm |
| GB2337841A (en) * | 1998-05-28 | 1999-12-01 | Mark Henry Herrington | Combined light bulb fitting and smoke alarm |
| FR2798499A1 (en) * | 1999-09-15 | 2001-03-16 | Prigent O Meara Erven | SYSTEM FOR REMOTELY CONTROLLING AT LEAST ONE ELECTRICAL APPARATUS, AND MODULES COMPRISING THE SAME |
| WO2003019492A1 (en) * | 2001-08-23 | 2003-03-06 | Johnny Pollard | Fire detection system |
| EP1606724A2 (en) * | 2003-03-07 | 2005-12-21 | Openpeak Inc. | Method, system, and computer program product for managing controlled residential or non-residential environments |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8608115D0 (en) | 1986-04-03 | 1986-05-08 | Secr Defence | Smectic liquid crystal devices |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB275399A (en) * | ||||
| GB225532A (en) * | 1923-12-01 | 1925-07-16 | Pathe Cinema | Improvements in electric contact plugs |
| GB413562A (en) * | 1932-12-09 | 1934-07-19 | British Thomson Houston Co Ltd | Improvements in and relating to indicators for showing failure of electric lamps |
| US4090178A (en) * | 1976-08-09 | 1978-05-16 | Norris Elwood G | Combination smoke detector and lamp structure |
| GB2008871A (en) * | 1977-11-21 | 1979-06-06 | Esb Int Corp | Auxiliary lighting systems associated with an alarm system |
| GB2052178A (en) * | 1979-06-12 | 1981-01-21 | Ramolite Products Ltd | Lampsockets |
| EP0053896A1 (en) * | 1980-11-28 | 1982-06-16 | Sa Patscentre Benelux Nv | Light dimmer device |
| EP0071768A1 (en) * | 1981-07-31 | 1983-02-16 | Murata Manufacturing Co., Ltd. | Lamp protection arrangement and junction socket therefor |
-
1987
- 1987-03-13 GB GB08706020A patent/GB2187018B/en not_active Expired
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB275399A (en) * | ||||
| GB225532A (en) * | 1923-12-01 | 1925-07-16 | Pathe Cinema | Improvements in electric contact plugs |
| GB413562A (en) * | 1932-12-09 | 1934-07-19 | British Thomson Houston Co Ltd | Improvements in and relating to indicators for showing failure of electric lamps |
| US4090178A (en) * | 1976-08-09 | 1978-05-16 | Norris Elwood G | Combination smoke detector and lamp structure |
| GB2008871A (en) * | 1977-11-21 | 1979-06-06 | Esb Int Corp | Auxiliary lighting systems associated with an alarm system |
| GB2052178A (en) * | 1979-06-12 | 1981-01-21 | Ramolite Products Ltd | Lampsockets |
| EP0053896A1 (en) * | 1980-11-28 | 1982-06-16 | Sa Patscentre Benelux Nv | Light dimmer device |
| EP0071768A1 (en) * | 1981-07-31 | 1983-02-16 | Murata Manufacturing Co., Ltd. | Lamp protection arrangement and junction socket therefor |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2205642A (en) * | 1987-05-21 | 1988-12-14 | Pittway Corp | Infrared actuated control switch assembly |
| US4823051A (en) * | 1987-05-21 | 1989-04-18 | Pittway Corporation | Infrared actuated control switch assembly |
| GB2205642B (en) * | 1987-05-21 | 1991-09-11 | Pittway Corp | Infrared actuated control switch assembly |
| FR2633760A1 (en) * | 1988-06-29 | 1990-01-05 | Am Chamrceun Rith | Detector of a leak of inflammable or toxic gases and/or of fire and network using this detector |
| WO1993017482A2 (en) * | 1992-02-29 | 1993-09-02 | Scantronic Limited | Power supply and smoke sensor for alarm system |
| WO1993017482A3 (en) * | 1992-02-29 | 1993-10-28 | Scantronic Ltd | Power supply and smoke sensor for alarm system |
| GB2281139A (en) * | 1993-08-19 | 1995-02-22 | Martyn Christopher Hill | Gas detector and alarm |
| GB2281139B (en) * | 1993-08-19 | 1996-12-18 | Martyn Christopher Hill | A detector |
| GB2315326A (en) * | 1996-07-15 | 1998-01-28 | Solar Wide Ind Ltd | Intruder alarm |
| GB2337841A (en) * | 1998-05-28 | 1999-12-01 | Mark Henry Herrington | Combined light bulb fitting and smoke alarm |
| FR2798499A1 (en) * | 1999-09-15 | 2001-03-16 | Prigent O Meara Erven | SYSTEM FOR REMOTELY CONTROLLING AT LEAST ONE ELECTRICAL APPARATUS, AND MODULES COMPRISING THE SAME |
| WO2001020749A1 (en) * | 1999-09-15 | 2001-03-22 | Erven Prigent | Remote control system for at least an electrical apparatus, and modules component modules of said system |
| WO2003019492A1 (en) * | 2001-08-23 | 2003-03-06 | Johnny Pollard | Fire detection system |
| CN100342407C (en) * | 2001-08-23 | 2007-10-10 | Gsbs发展公司 | Fire detection system |
| EP1606724A2 (en) * | 2003-03-07 | 2005-12-21 | Openpeak Inc. | Method, system, and computer program product for managing controlled residential or non-residential environments |
| EP1606724A4 (en) * | 2003-03-07 | 2007-08-22 | Openpeak Inc | Method, system, and computer program product for managing controlled residential or non-residential environments |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8706020D0 (en) | 1987-04-15 |
| GB2187018B (en) | 1988-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |