EP0814444B1 - Safety device - Google Patents

Safety device Download PDF

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Publication number
EP0814444B1
EP0814444B1 EP97201829A EP97201829A EP0814444B1 EP 0814444 B1 EP0814444 B1 EP 0814444B1 EP 97201829 A EP97201829 A EP 97201829A EP 97201829 A EP97201829 A EP 97201829A EP 0814444 B1 EP0814444 B1 EP 0814444B1
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Prior art keywords
gas
gas sensor
sensors
supply
safety device
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EP97201829A
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German (de)
French (fr)
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EP0814444A2 (en
EP0814444A3 (en
Inventor
Renzo Reggiani
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Huberg Gasmesstechnik GmbH
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Huberg Gasmesstechnik GmbH
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Priority claimed from DE1996124976 external-priority patent/DE19624976A1/en
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Publication of EP0814444A3 publication Critical patent/EP0814444A3/en
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/16—Combustible gas alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/14—Toxic gas alarms

Definitions

  • the invention relates to a safety device with at least one in a room to be monitored arranged gas sensor, which occurs when Fuel gas in the room preventing the supply of Fuel gas and power supply for one too supplying complex, whereby the Gas sensor operation in the event of a power failure by one electric battery is maintained.
  • Such a safety device is through the DE-A1-32 08 553 known.
  • the one described there Gas safety device is a cable from the gas sensor led to the gas main tap, which is a servomotor is associated with the occurrence of fuel gas in the room to be monitored by an electrical Battery via a gas sensor contact and the cable is supplied with electricity and the gas main tap closes; at the same time the main power line disabled. That way prevents the complex to be supplied, for example a house, continue with fuel gas and Power is supplied, causing an explosion is prevented.
  • DE-U1-89 13 816 an intrinsically safe gas detector for residential buildings known, in which gas detection sensors are located in a room are in the escaping gas probably accumulates first.
  • the Gas detection sensors are intrinsically safe, while a more comprehensive share of the supply Device part of the gas detector is not intrinsically safe is executed and located in a room other than the gas sensors is located. In the event of a power failure of the public network is taken over by a battery Continued operation of the gas detector.
  • DE-A1-38 03 892 Gas warning system known in which a number of Pressure sensors, each the gas pressure, the Temperature and the amount of from a gas bottle Measure the emitted fuel gas to a central module are connected, depending on Faults in the measured values sound an alarm or visually there and which prevents the Gas delivery of the gas bottles causes.
  • gas sensors The formation of gas sensors is general known, such as the essay "Sensor Technology” by Gerhard Wiegleb, published in Franzis electronics book, 1986, chapter 5, p.93-111, can be seen.
  • the gas sensors described there can include hydrocarbons, Determine carbon monoxide or oxygen.
  • the sensors of the known safety devices speak only on hydrocarbon gases, namely Natural gas, methane or propane.
  • a portable gas analyzer is known from US 4,485,666 known to take a gas sample through a Carbon monoxide sensor cell, one Oxygen sensor cell and a methane ⁇ sensor pumps and continuously all critical Indicates gas concentrations. Nevertheless, there are neither in this gas analyzer Motion detector attached, is still Preventing the supply of the fuel gas and the Power supply in a room to be monitored intended.
  • the object of the invention is a Safety device of the type mentioned at the beginning create their function at the measurement location of the gas sensor is expanded. It should also be possible to deliberate manipulation at the location of the gas sensor, for example, clogging the air supply opening of the gas sensor housing.
  • the safety device is very sensitive to dangerous Air compositions.
  • a further embodiment of the invention is thereby characterized in that the transmission of the signals from the sensors to the the suppression of the supply of the fuel gas and the Means effecting power supply wirelessly, preferably by radio. This allows the Safety device with minimal effort, without Masonry work for laying cables, be installed.
  • the safety device according to Fig. 1 (detector system) consists of three of each other entirely independent sensors 10. Each of these three sensors only responds to a gas.
  • the first sensor 10/1 responds to oxygen. The measured value drops slightly below the normal value found in the air is present (20.9%), the alarm is triggered.
  • the second sensor 10/2 reacts to natural gas / propane gas. At a total concentration higher than 0.5 or 1%, the alarm is triggered.
  • the third Sensor 10/3 reacts to carbon monoxide. exceeds the CO value becomes the concentration of 100 ppm Alarm triggered.
  • the one described above Detector system includes sensors that according to the current state of the art are already known.
  • the three sensors in one Detector system are housed. Is through one of the three sensors triggered an alarm Interruption of the power network or main switch 12 and the gas supply in line 14 through a Solenoid valve 16, for the entire building.
  • the Transmission of the signal from the sensor to the main switch 12 and / or the solenoid valve 16 can be by cable or wireless, e.g. by radio. Especially It is advantageous to transmit the control signals by radio to send, creating an additional and elaborate Cable laying is no longer required.
  • the Interruption of the mains voltage causes the closing of the solenoid valve so that the entire gas supply is interrupted.
  • Carbon monoxide is produced in every combustion process. If such a situation occurs, an alarm is raised triggered and the electricity and gas supply interrupted, long before a dangerous one Concentration of carbon monoxide can arise.
  • the oxygen sensor has the task of electricity and Shut off gas if a fire or if someone broke the entire facility specifically want to shut down (suicide).
  • the sensor measures one lower oxygen content, causing alarm triggered and the electricity and gas supply interrupted become.
  • This sensor only reacts to methane / propane. If so for some reason unburned gas in the Space flows, e.g. Leak in a pipe or open Gas tap, so an alarm is triggered and the whole Electricity and gas supply is interrupted. This is possible because in this case the solenoid valve is not more directly connected to the electrical current but to the detector battery.
  • the Solenoid valve is also used in the event of a power failure (220 V) due to a defect in the power supply from the im Detector built-in battery (18) in the open Condition kept.
  • the detectors control it Solenoid valve, whereby the gas supply is interrupted becomes.
  • the detectors can also be used optical and acoustic signal systems his. The two different information (optical and / or acoustic) are by the electrical current of the system described maintained. A more detailed description of the individual detectors are unnecessary since here advantageously known and proven detectors can be used.
  • Detectors that are sensitive to other information, e.g. Explosion, react, install.
  • sensors result from the fact that the three gases are typical of such situations, an explosive (deadly) mixture form that explodes on inflammation and rapid and can cause acute poisoning.
  • the device can be used in industrial applications currently known and common production techniques for sensors as well as for electro valves be equipped.
  • the system also prevents fires in front.
  • Devices with the proposed system can with a large number of detectors be equipped, one for each room in the Hazardous area connected to the main detector be the only one the different Controls with all its functions. It is a subsidiary application because their realization use one in the field of Electrical engineering technology already known presupposes.
  • the housing of the devices in which the Sensors and other devices housed are well known, and their shape does not affect the principle of application.
  • the outer casing can be made of metal or plastic exist and the shape of a three-dimensional Have parallelepipedon, with one suitable recess for the passage of said volatile elements and with a special Arrangement of the sensors inside the housing. It It is also possible to use the system in different ways Apartments of a building with a single To accommodate power source (battery or the like) that are not of normal Power supply is dependent.
  • FIG. 5 shows an arrangement of sensors in one Housing 20 shown in the form of a cubic Parallelepipedons is formed, but also in shape a hemisphere can be formed and with a central opening 21 is provided.
  • sensors motion detectors
  • 10/1 ', 10/2', 10/2 ", 10/3 ' These sensors are in the Middle of the housing 20 suspended so that the through the opening 21 entering the housing 20 Indoor air reaches them immediately. A deliberate, malicious clogging of the opening 21 is detected by sensor 10/1.

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  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Emergency Alarm Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

A gas detector for safety applications may be operated from the mains or from a rechargeable battery. It consists of three fully-independent sensors positioned alongside one another of which one (10/1) monitors the oxygen component in the air within the room, one (10/2) detects methane or propane and the third (10/3) detects carbon monoxide. An acoustic or optical alarm signal is given if the oxygen concentration falls below 20.9%, if the methane or propane content is higher than 0.5% to 1.0% or if the carbon monoxide content present exceeds 100 ppm. Following an alarm signal, the detector system transmits a radio signal to switch off the current supply at a mains switch (12) and/or to close a magnetic valve (16), blocking the further supply of gas in a feed-pipe (14).

Description

Die Erfindung betrifft eine Sicherheitsvorrichtung mit mindestens einem in einem zu überwachenden Raum angeordneten Gassensor, der beim Auftreten von Brenngas im Raum die Unterbindung der Zufuhr des Brenngases und der Stromversorgung für einen zu versorgenden Komplex veranlaßt, wobei der Gassensorbetrieb bei Stromausfall von einer elektrischen Batterie aufrechterhalten wird.The invention relates to a safety device with at least one in a room to be monitored arranged gas sensor, which occurs when Fuel gas in the room preventing the supply of Fuel gas and power supply for one too supplying complex, whereby the Gas sensor operation in the event of a power failure by one electric battery is maintained.

Eine derartige Sicherheitsvorrichtung ist durch die DE-A1-32 08 553 bekannt. Bei der dort beschriebenen Gassicherungsvorrichtung ist vom Gassensor ein Kabel zum Gashaupthahn geführt, dem ein Stellmotor beigeordnet ist, der beim Auftreten von Brenngas im zu überwachenden Raum von einer elektrischen Batterie über einen Gassensorkontakt und das Kabel mit Strom versorgt wird und dabei den Gashaupthahn schließt; gleichzeitig wird die Hauptstromleitung außer Betrieb gesetzt. Auf diese Weise wird verhindert, daß der zu versorgende Komplex, beispielsweise ein Wohnhaus, weiter mit Brenngas und Strom versorgt wird, so daß einer Explosion vorgebeugt wird. Weiterhin ist durch die DE-U1-89 13 816 ein eigensicherer Gasmelder für Wohnhäuser bekannt, bei dem Gasmeldesensoren sich in einem Raum befinden, in dem austretendes Gas sich wahrscheinlich zuerst ansammelt. Die Gasmeldesensoren sind eigensicher ausgebildet, während ein den Versorgungsanteil umfassender Geräteteil des Gasmelders nicht eigensicher ausgeführt ist und sich in einem anderen Raum als die Gassensoren befindet. Bei Stromausfall des öffentlichen Netzes übernimmt ein Akku den Weiterbetrieb des Gasmelders.Such a safety device is through the DE-A1-32 08 553 known. The one described there Gas safety device is a cable from the gas sensor led to the gas main tap, which is a servomotor is associated with the occurrence of fuel gas in the room to be monitored by an electrical Battery via a gas sensor contact and the cable is supplied with electricity and the gas main tap closes; at the same time the main power line disabled. That way prevents the complex to be supplied, for example a house, continue with fuel gas and Power is supplied, causing an explosion is prevented. Furthermore, DE-U1-89 13 816 an intrinsically safe gas detector for residential buildings known, in which gas detection sensors are located in a room are in the escaping gas probably accumulates first. The Gas detection sensors are intrinsically safe, while a more comprehensive share of the supply Device part of the gas detector is not intrinsically safe is executed and located in a room other than the gas sensors is located. In the event of a power failure of the public network is taken over by a battery Continued operation of the gas detector.

Ferner ist durch die DE-A1-38 03 892 eine Gaswarnanlage bekannt, bei der eine Reihe von Drucksensoren, die jeweils den Gasdruck, die Temperatur und die Menge des aus einer Gasflasche abgegebenen Brenngases messen, an ein Zentralmodul angeschlossen sind, das in Abhängigkeit von Störungen der gemessenen Werte einen Alarm akustisch oder visuell gibt und die die Unterbindung der Gasabgabe der Gasflaschen veranlaßt.Furthermore, DE-A1-38 03 892 Gas warning system known in which a number of Pressure sensors, each the gas pressure, the Temperature and the amount of from a gas bottle Measure the emitted fuel gas to a central module are connected, depending on Faults in the measured values sound an alarm or visually there and which prevents the Gas delivery of the gas bottles causes.

Die Ausbildung von Gassensoren ist allgemein bekannt, wie beispielsweise dem Aufsatz "Sensortechnik"von Gerhard Wiegleb, erschienen im Franzis Elektronik-Fachbuch, 1986, Kap.5, S.93-111, zu entnehmen ist. Die dort beschriebenen Gassensoren können unter anderem jeweils Kohlenwasserstoffe, Kohlenmonoxid oder Sauerstoff feststellen.The formation of gas sensors is general known, such as the essay "Sensor Technology" by Gerhard Wiegleb, published in Franzis electronics book, 1986, chapter 5, p.93-111, can be seen. The gas sensors described there can include hydrocarbons, Determine carbon monoxide or oxygen.

Die Sensoren der bekannten Sicherheitsvorrichtungen sprechen nur auf Kohlenwasserstoffgase, nämlich Erdgas, Methan oder Propan, an.The sensors of the known safety devices speak only on hydrocarbon gases, namely Natural gas, methane or propane.

Aus der US 4,485,666 ist ein tragbarer Gasanalysator bekannt, der eine Gasprobe durch eine Kohlenmonoxid-Sensorzelle, eine Sauerstoffsensorzelle und einen Methan ―Sensor pumpt und kontinuierlich alle kritischen Gaskonzentrationen angibt. Dennoch sind in diesem Gasanalysator weder Bewegungsmelder angebracht, noch ist die Unterbindung der Zufuhr des Brenngases und der Stromversorgung in einem zu überwachenden Raum vorgesehen.A portable gas analyzer is known from US 4,485,666 known to take a gas sample through a Carbon monoxide sensor cell, one Oxygen sensor cell and a methane ― sensor pumps and continuously all critical Indicates gas concentrations. Nevertheless, there are neither in this gas analyzer Motion detector attached, is still Preventing the supply of the fuel gas and the Power supply in a room to be monitored intended.

Die Aufgabe der Erfindung besteht darin, eine Sicherheitsvorrichtung der eingangs genannten Art zu schaffen, deren Funktion am Meßort des Gassensors erweitert ist. Ferner soll es möglich sein, eine absichtliche Manipulation am Ort des Gassensors, beispielsweise das Verstopfen der Luftzuführöffnung des Gassensorgehäuses, festzustellen.The object of the invention is a Safety device of the type mentioned at the beginning create their function at the measurement location of the gas sensor is expanded. It should also be possible to deliberate manipulation at the location of the gas sensor, for example, clogging the air supply opening of the gas sensor housing.

Diese Aufgabe wird mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Die Sicherheitsvorrichtung reagiert dadurch sehr empfindlich auf gefährliche Luftzusammensetzungen.This task comes with the distinctive features of claim 1 solved. The safety device is very sensitive to dangerous Air compositions.

Eine weitere Ausbildung der Erfindung ist dadurch gekennzeichnet, daß die übertragung der Signale der Sensoren zu den die Unterbindung der Zufuhr des Brenngases und der Stromversorgung bewirkenden Mitteln kabellos, vorzugsweise durch Funk, erfolgt. Dadurch kann die Sicherheitsvorrichtung mit minimalem Aufwand, ohne Mauerarbeiten zum Verlegen von Leitungen, installiert werden.A further embodiment of the invention is thereby characterized in that the transmission of the signals from the sensors to the the suppression of the supply of the fuel gas and the Means effecting power supply wirelessly, preferably by radio. This allows the Safety device with minimal effort, without Masonry work for laying cables, be installed.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch dargestellt und wird im folgenden näher erläutert. Es zeigen:

  • Fig.1 eine Sicherheitsvorrichtung mit einem Gerät, das an die Netzspannung angeschlossen ist und den Gaszufluß steuert,
  • Fig.2 eine Sicherheitsvorrichtung nach Fig.1 mit einer wiederaufladbaren Batterie (Niederspannung),
  • Fig.3 und 4 jeweils eine Sicherheitsvorrichtung mit zwei in Reihe geschalteten Detektoren und
  • Fig.5 eine räumliche Anordnung der Sensoren in einem Detektor.
    • An embodiment of the invention is shown schematically in the drawing and is explained in more detail below. Show it:
  • 1 shows a safety device with a device which is connected to the mains voltage and controls the gas flow,
  • 2 shows a safety device according to FIG. 1 with a rechargeable battery (low voltage),
  • 3 and 4 each have a safety device with two detectors and connected in series
  • 5 shows a spatial arrangement of the sensors in a detector.

    • Die Sicherheitsvorrichtung nach Fig.1 (Detektorsystem) besteht aus drei voneinander völlig unabhängigen Sensoren 10. Jeder dieser drei Sensoren reagiert nur auf ein Gas. Der erste Sensor 10/1 reagiert auf Sauerstoff. Sinkt der gemessene Wert geringfügig unter den normalen Wert, der in der Luft vorhanden ist (20,9%), wird Alarm ausgelöst. Der zweite Sensor 10/2 reagiert auf Erdgas/Propangas. Bei einer Gesamtkonzentration, die höher als 0,5 oder 1% liegt, wird Alarm ausgelöst. Der dritte Sensor 10/3 reagiert auf Kohlenmonoxid. Übersteigt der CO-Wert die Konzentration von 100 ppm, wird Alarm ausgelöst. Die Schwellwerte, bei denen der Alarm ausgelöst wird, können je nach Gesetztesbestimmungen für Sicherheitsanlagen modifiziert werden. Das oben beschriebene Detektorsystem beinhaltet Sensoren, die nach dem aktuellen Stand der Technik schon bekannt sind. Ein Aspekt des tragenden Gedankens der Erfindung besteht also darin, daß die drei Sensoren in einem einzigen Detektorsystem untergebracht sind. Wird durch einen der drei Sensoren Alarm ausgelöst, so erfolgt eine Unterbrechung des Stromnetzes bzw. Hauptschalters 12 und der Gaszufuhr in Leitung 14 durch ein Magnetventil 16, und zwar für das ganze Gebäude. Die Übersendung des Signals vom Sensor zum Hauptschalter 12 und/oder dem Magnetventil 16 kann per Kabel oder kabellos, z.B. per Funk, erfolgen. Besonders vorteilhaft ist es, die Steuerungssignale per Funk zu senden, wodurch eine zusätzliche und aufwendige Kabellegung nicht mehr erforderlich ist. Die Unterbrechung der Netzspannung bewirkt das Schließen des Magnetventils, so daß die gesamte Gaszufuhr unterbrochen wird.The safety device according to Fig. 1 (detector system) consists of three of each other entirely independent sensors 10. Each of these three sensors only responds to a gas. The first sensor 10/1 responds to oxygen. The measured value drops slightly below the normal value found in the air is present (20.9%), the alarm is triggered. The second sensor 10/2 reacts to natural gas / propane gas. At a total concentration higher than 0.5 or 1%, the alarm is triggered. The third Sensor 10/3 reacts to carbon monoxide. exceeds the CO value becomes the concentration of 100 ppm Alarm triggered. The thresholds at which the Alarm can be triggered depending on Legal provisions for security systems be modified. The one described above Detector system includes sensors that according to the current state of the art are already known. On Aspect of the basic idea of the invention So in that the three sensors in one Detector system are housed. Is through one of the three sensors triggered an alarm Interruption of the power network or main switch 12 and the gas supply in line 14 through a Solenoid valve 16, for the entire building. The Transmission of the signal from the sensor to the main switch 12 and / or the solenoid valve 16 can be by cable or wireless, e.g. by radio. Especially It is advantageous to transmit the control signals by radio to send, creating an additional and elaborate Cable laying is no longer required. The Interruption of the mains voltage causes the closing of the solenoid valve so that the entire gas supply is interrupted.

    CO-SensorCO sensor

    Bei jedem Verbrennungsprozeß entsteht Kohlenmonoxid. Tritt eine solche Situation ein, so wird Alarm ausgelöst und die Strom- und Gaszufuhr werden unterbrochen, und zwar lange bevor eine gefährliche Konzentration von Kohlenmonoxid entstehen kann.Carbon monoxide is produced in every combustion process. If such a situation occurs, an alarm is raised triggered and the electricity and gas supply interrupted, long before a dangerous one Concentration of carbon monoxide can arise.

    02-Sensor02 sensor

    Der Sauerstoffsensor hat die Aufgabe, die Strom- und Gaszufuhr zu unterbinden, wenn ein Brand ausgebrochen ist oder wenn jemand die gesamte Anlage gezielt außer Betrieb setzen möchte (Selbstmörder).The oxygen sensor has the task of electricity and Shut off gas if a fire or if someone broke the entire facility specifically want to shut down (suicide).

    Wird nämlich die Öffnung, durch welche die Umgebungsluft in das Detektorsystem eintritt und an die Sensoren geführt wird, geschlossen, z.B. mittels eines Klebebandes, so mißt der Sensor einen niedrigeren Sauerstoffgehalt, wodurch Alarm ausgelöst und die Strom- und Gaszufuhr unterbrochen werden.If the opening through which the Ambient air enters the detector system and on the sensors are guided, closed, e.g. by means of of an adhesive tape, the sensor measures one lower oxygen content, causing alarm triggered and the electricity and gas supply interrupted become.

    Methan-/PropansensorMethane / propane sensor

    Dieser Sensor reagiert nur auf Methan-/Propan. Wenn also aus irgendeinem Grund unverbranntes Gas in den Raum strömt, z.B. Leck in einer Leitung oder offener Gashahn, so wird ein Alarm ausgelöst und die gesamte Strom- und Gaszufuhr wird unterbrochen. Dies ist möglich, weil in diesem Fall das Magnetventil nicht mehr direkt an den elektrischen Strom angeschlossen ist, sondern an die Batterie des Detektors. Das Magnetventil wird auch im Falle eines Stromausfalls (220 V) wegen eines Defekts am Stromnetz von der im Detektor eingebauten Batterie (18) im geöffneten Zustand gehalten. Die Detektoren steuern das Magnetventil, wodurch die Gaszufuhr unterbrochen wird. Darüberhinaus können die Detektoren mit optischen und akustischen Signalanlagen ausgerüstet sein. Die beiden unterschiedlichen Informationen (optische und/oder akustische) werden durch den elektrischen Strom des beschriebenen Systems aufrechterhalten. Eine nähere Beschreibung der einzelnen Detektoren erübrigt sich, da hier vorteilhafterweise bekannte und bewährte Detektoren verwendet werden können.This sensor only reacts to methane / propane. If so for some reason unburned gas in the Space flows, e.g. Leak in a pipe or open Gas tap, so an alarm is triggered and the whole Electricity and gas supply is interrupted. This is possible because in this case the solenoid valve is not more directly connected to the electrical current but to the detector battery. The Solenoid valve is also used in the event of a power failure (220 V) due to a defect in the power supply from the im Detector built-in battery (18) in the open Condition kept. The detectors control it Solenoid valve, whereby the gas supply is interrupted becomes. The detectors can also be used optical and acoustic signal systems his. The two different information (optical and / or acoustic) are by the electrical current of the system described maintained. A more detailed description of the individual detectors are unnecessary since here advantageously known and proven detectors can be used.

    Selbstverständlich wäre es auch möglich, weitere Detektoren, die auf andere Informationen, z.B. Explosion, reagieren, einzubauen. Die Wahl von Sensoren ergibt sich jedoch aus der Tatsache, daß die drei Gase typisch für solche Sachverhalte sind, also eine explosionsartige (tödliche) Mischung bilden, die bei Entzündung explodiert und schnelle und akute Vergiftungen hervorrufen kann. Für den industriellen Gebrauch kann die Vorrichtung mit derzeit bekannten und üblichen Produktionstechniken sowohl für Sensoren als auch für Elektroventile bestückt werden.Of course, it would also be possible to add more Detectors that are sensitive to other information, e.g. Explosion, react, install. The choice of However, sensors result from the fact that the three gases are typical of such situations, an explosive (deadly) mixture form that explodes on inflammation and rapid and can cause acute poisoning. For the The device can be used in industrial applications currently known and common production techniques for sensors as well as for electro valves be equipped.

    In diesem Zusammenhang beugt das System auch Bränden vor. Vorrichtungen mit dem vorgeschlagenen System können mit einer großen Anzahl von Detektoren ausgerüstet sein, einem für jeden Raum im Gefahrbereich, die mit dem Hauptdetektor verbunden werden, der als einziger die verschiedenen Steuerungen mit allen seinen Funktionen erfüllt. Es handelt sich dabei um eine subsidiäre Anwendung, da ihre Realisierung den Gebrauch eine im Bereich der Elektrotechnik schon bekannte Technologie voraussetzt. Die Gehäuse der Geräte, in denen die Sensoren und andere Vorrichtungen untergebracht sind, sind allgemein bekannt, und ihre Form beeinflußt nicht das Anwendungsprinzip.In this context, the system also prevents fires in front. Devices with the proposed system can with a large number of detectors be equipped, one for each room in the Hazardous area connected to the main detector be the only one the different Controls with all its functions. It is a subsidiary application because their realization use one in the field of Electrical engineering technology already known presupposes. The housing of the devices in which the Sensors and other devices housed are well known, and their shape does not affect the principle of application.

    Das äußere Gehäuse kann aus Metall oder Kunststoff bestehen und die Form eines dreidimensionalen Parallelepipedon haben, und zwar mit einer geeigneten Aussparung für den Durchlaß der besagten flüchtigen Elemente und mit einer besonderen Anordnung der Sensoren im Inneren des Gehäuses. Es ist ferner möglich, das System in verschiedenen Wohnungen eines Gebäudes mit einer einzigen Stromquelle unterzubringen (Batterie oder dergleichen), die nicht von der normalen Stromversorgung abhängig ist.The outer casing can be made of metal or plastic exist and the shape of a three-dimensional Have parallelepipedon, with one suitable recess for the passage of said volatile elements and with a special Arrangement of the sensors inside the housing. It It is also possible to use the system in different ways Apartments of a building with a single To accommodate power source (battery or the like) that are not of normal Power supply is dependent.

    In Fig.5 ist eine Anordnung von Sensoren in einem Gehäuse 20 gezeigt, das in Form eines kubischen Parallelepipedons ausgebildet ist, aber auch in Form einer Halbkugel ausgebildet werden kann und mit einer zentralen Öffnung 21 versehen ist. Es sind weitere Sensoren (Bewegungsmelder) 10/1', 10/2', 10/2", 10/3' vorgesehen. Diese Sensoren sind in der Mitte des Gehäuses 20 so aufgehängt, daß die durch die Öffnung 21 in das Gehäuse 20 eintretende Raumluft sie unmittelbar erreicht. Eine absichtliche, böswillige Verstopfung der Öffnung 21 wird vom Sensor 10/1 festgestellt.5 shows an arrangement of sensors in one Housing 20 shown in the form of a cubic Parallelepipedons is formed, but also in shape a hemisphere can be formed and with a central opening 21 is provided. There are further sensors (motion detectors) 10/1 ', 10/2', 10/2 ", 10/3 '. These sensors are in the Middle of the housing 20 suspended so that the through the opening 21 entering the housing 20 Indoor air reaches them immediately. A deliberate, malicious clogging of the opening 21 is detected by sensor 10/1.

    Claims (2)

    1. Safety device comprising at least one gas sensor (10), which is disposed in a space to be monitored and which in the event of combustible gas arising in the space effects disconnection of the supply of the combustible gas and of the power supply for a complex to be supplied, wherein in the event of a power failure gas sensor operation is maintained by an electric battery (18), and disposed spatially near the gas sensor (10/2) are two further sensors, of which the one (10/1) detects the oxygen fraction and the other (10/3) detects the carbon monoxide fraction of the space air, characterized in that provided in the middle of the gas sensor housing (20) are motion detectors (10/1', 10/2', 10/2", 10/3') for detecting movements in the region of the installation in the event of deliberate manipulation at the site of the gas sensor (10) to block up the opening (21) of the gas sensor housing (20).
    2. Safety device according to claim 1, characterized in that transmission of the signals from the sensors to the means (16, 12) of effecting disconnection of the gas supply and the power supply is effected without cables, preferably by radio transmission.
    EP97201829A 1996-06-22 1997-06-14 Safety device Expired - Lifetime EP0814444B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE1996124976 DE19624976A1 (en) 1995-07-06 1996-06-22 Combustible gas detector for monitored room and premises - senses reduced oxygen or presence of carbon monoxide, methane or propane in air within room, giving alarm and automatic cut=off
    DE19624976 1996-06-22

    Publications (3)

    Publication Number Publication Date
    EP0814444A2 EP0814444A2 (en) 1997-12-29
    EP0814444A3 EP0814444A3 (en) 1998-09-09
    EP0814444B1 true EP0814444B1 (en) 2002-07-24

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    EP97201829A Expired - Lifetime EP0814444B1 (en) 1996-06-22 1997-06-14 Safety device

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    AT (1) ATE221234T1 (en)

    Families Citing this family (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB9924696D0 (en) * 1999-10-20 1999-12-22 Lewis Gary Carbon monoxide safety apparatus
    GB0005593D0 (en) * 2000-03-09 2000-05-03 Ascot Management Solutions Ltd Monitoring system
    GB2375646A (en) * 2001-05-16 2002-11-20 Monox Ltd Safety module for fuel-burning appliance, and appliance using such a safety module
    EP2083406B1 (en) * 2008-01-24 2010-07-28 Kamstrup A/S Electric energy consumption meter with gas detector
    GB201011293D0 (en) * 2010-07-06 2010-08-18 Macphail Nicholas J J Means of oil supply shut off in case of leak

    Family Cites Families (7)

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    Publication number Priority date Publication date Assignee Title
    US4088986A (en) * 1976-10-01 1978-05-09 Boucher Charles E Smoke, fire and gas alarm with remote sensing, back-up emergency power, and system self monitoring
    GB2105849B (en) * 1981-09-11 1985-05-15 Coal Ind Electrical gas analyser for sensing at least two gases
    DK367587D0 (en) * 1987-07-14 1987-07-14 Dan Taet Odense A S GASTEETHETSKRETROLANLEG
    IT1249197B (en) * 1991-04-29 1995-02-20 Eurogiada Srl ATMOSPHERIC IMPURITIES DETECTION DEVICE
    JPH06139486A (en) * 1992-10-29 1994-05-20 Ricoh Seiki Co Ltd Gas meter system
    GB2294794A (en) * 1994-11-02 1996-05-08 William Michael Sheret Fuel leak monitoring apparatus
    EP0714018A3 (en) * 1994-11-25 1998-03-11 Victor John Diduck Liquid or gas leak detection and shut-off system

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    ATE221234T1 (en) 2002-08-15
    EP0814444A2 (en) 1997-12-29
    EP0814444A3 (en) 1998-09-09

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