EP2711907A1 - Avertisseur, dispositif de test et procédé de contrôle d'un avertisseur - Google Patents

Avertisseur, dispositif de test et procédé de contrôle d'un avertisseur Download PDF

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Publication number
EP2711907A1
EP2711907A1 EP12006679.0A EP12006679A EP2711907A1 EP 2711907 A1 EP2711907 A1 EP 2711907A1 EP 12006679 A EP12006679 A EP 12006679A EP 2711907 A1 EP2711907 A1 EP 2711907A1
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EP
European Patent Office
Prior art keywords
test
medium
sensor
test medium
detector
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
Application number
EP12006679.0A
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German (de)
English (en)
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EP2711907B1 (fr
Inventor
Robert Laufersweiler
Christoph Schillinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hekatron Vertriebs GmbH
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Hekatron Vertriebs GmbH
Priority date (The priority date 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 date listed.)
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Priority to EP12006679.0A priority Critical patent/EP2711907B1/fr
Priority to PL12006679T priority patent/PL2711907T3/pl
Publication of EP2711907A1 publication Critical patent/EP2711907A1/fr
Application granted granted Critical
Publication of EP2711907B1 publication Critical patent/EP2711907B1/fr
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/12—Checking intermittently signalling or alarm systems
    • G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
    • G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits

Definitions

  • the invention relates to a hazard detector for the detection of interfering medium such as gas, smoke or temperature, a method for testing this detector and a test device with which the detector can be checked.
  • Such a method, a detector and a tester are for example from EP 1 286 320 B1 known.
  • a test signal is generated for testing the detector, which is composed of a sequence of high and low concentrations of a test medium and is different from a Störmedium-concentration pattern that occurs in an alarm case.
  • the tester generates the described test pattern and the detector recognizes the test pattern output by the tester as such and outputs an alarm signal.
  • the method is well suited is to test a smoke detector with a commercially available test aerosol from a spray can or spray bottle.
  • a short spray of such vomaerosols from the spray can in the detection range of the detector, the sensor of the detector reacts with a high measurement signal.
  • the test aerosol decomposes rapidly, whereupon the sensor reacts with a low measurement signal. Therefore, alone with a test aerosol from a spray can in a short time a certain sequence of high and low concentrations of strigaerosols be generated.
  • a test gas instead of a smoke sensor, a gas sensor z. B. a CO sensor are checked, then a test gas must be used as the test medium instead of an aerosol.
  • a common test gas lacks the property to expire within a short time and lingers longer time in the detector. Therefore, it is necessary to wait a long time with a test gas until a low concentration and thus a low measuring signal at the sensor again sets. Since the residence time of the gas in the detector is indefinite, it becomes impossible to produce a precisely determined sequence of high and low test medium concentrations. In any case, at least the time required to generate a sequence of high and low test medium concentrations is increased. The advantage of a considerably accelerated inspection of the detector is thereby significantly reduced or even lost altogether.
  • test medium used consists of a spray aerosol that already contains a test gas, as z. B. from the US 4715985 A has become known. Since the test aerosol decomposes, but the test gas contained therein does not, the test gas remains in the detection range of the gas sensor and continues to generate a high measurement signal there.
  • the invention is therefore based on the object to shorten the time required for the test of a detector according to the method described above.
  • a detector which has at least one first sensor for measuring a first interfering medium.
  • interference medium basically every substance and every physical size is understood, which generates a measurement signal to a suitable sensor.
  • the measurement signal of the first sensor is subjected to a first filter operation for detecting at least one noise medium alarm pattern that occurs in the event of an alarm.
  • Filter operation is understood to be any measure that is used to detect a specific event, such as the event of a fire. In particular, this also means the execution of algorithms for the recognition of specific patterns.
  • the detection of a danger such. B. understood as a fire or a harmful concentration of a toxic gas. If the detector detects an interference medium alarm pattern in the first filter, the detector emits an alarm signal.
  • a specific sequence of high and low concentrations or intensities of a first test medium is output as a test pattern in the detection region of the at least one first sensor.
  • This is under test medium, a substance z.
  • a substance z As a gas, a mixture of different substances, an aerosol or a measurable physical quantity, for.
  • As a temperature understood which is introduced into the sensor-active area (detection range) of a sensor to cause a change in the previously supplied by the sensor reading, wherein the substances or physical quantities that are used as the test medium, with the monitored Sturgeon media can be identical, but can also differ from it, if they cause a corresponding measurable response to the respective sensor.
  • the first sensors find in the detector z. B.
  • test pattern differs from all patterns with which an alarm case can be detected, that is to say from all interference medium alarm patterns that are reasonably expected to occur in the event of an alarm.
  • the measuring signal of the first sensor is subjected to a second filtering operation for detecting the test pattern occurring in the test.
  • the alarmer issues an alarm signal and / or a positive test confirmation signal.
  • a second test medium is dispensed after a dispensing of the first test medium, which displaces the first test medium. This has the consequence that a high concentration or intensity of the first test medium is reduced quickly and after a precisely definable time, and quickly sets a low reading on the first sensor.
  • test medium a test gas is used as the test medium
  • spray aerosol as well as the spray aerosol can be displaced faster than it decays.
  • faster and more accurate test patterns can be generated even when using aticianaerosols as test medium.
  • the second test medium used is preferably a medium which does not generate a measurement signal at the first sensor.
  • a medium which does not generate a measurement signal at the first sensor for this purpose, depending on the configuration of the first sensor z.
  • air hot air, nitrogen, combustion gases such as CO or a test aerosol suitable and are used accordingly.
  • a gas sensor in particular a CO sensor
  • air, hot air, nitrogen and particularly preferably a smoke test aerosol are preferably used as the second test medium.
  • a smoke sensor is used as the first sensor, preferably air, hot air, nitrogen and particularly preferably fire gases, in particular CO, are used as the second test medium.
  • test patterns can be generated, which can be distinguished particularly well from alarm patterns, when in addition to the first sensor, a second sensor is used, which is sensitive to a different interference medium than the first sensor.
  • the first sensor is sensitive to the first test medium but not to the second test medium and a second sensor is sensitive to the second test medium.
  • the second sensor is not sensitive to the first test medium.
  • a CO sensor and second sensor uses a smoke sensor, then a simple test pattern z.
  • the measurement signal of the first sensor increases while the measurement signal on the second sensor remains unchanged.
  • the first test medium is displaced by the second test medium, the measurement signal at the first sensor decreases, while at the same time the measurement signal at the second sensor increases.
  • a further development of the method according to the invention results from the use of a third sensor, which is sensitive to a third interfering medium, in particular to temperature.
  • a third sensor which is sensitive to a third interfering medium, in particular to temperature.
  • both the second sensor and the third sensor are sensitive to the second test medium, which z.
  • B. is the case when the second sensor is a smoke sensor, the third sensor is a temperature sensor and the second test medium, a spray aerosol is used.
  • the spray aerosol cools down the temperature sensor, which responds to it with a decreasing reading, while at the same time the measurement signal of the smoke sensor rises sharply.
  • the invention also relates to a detector for the detection of interfering medium such as gas, smoke or temperature, with at least a first sensor for measuring a first interfering medium, in particular a gas such as CO and for measuring a first test medium, in particular a test gas.
  • the detector comprises an evaluation device, which comprises a first filter device for detecting an occurring in the event of an alarm Has interference medium alarm pattern.
  • the evaluation device has, in addition to the first filter device, a second filter device which is designed to detect a test pattern from a sequence of high and low test medium concentrations or intensities, wherein the test pattern deviates from interference medium alarm patterns which correspond to a Alarm case may occur and wherein the test pattern is provided for the test of the functionality of the detector.
  • the detector also has a signal output device which emits an alarm signal when the first filter device detects a noise medium alarm pattern and then outputs an alarm signal and / or a signal for confirming the passed test after having recognized a test pattern by the second filter device has been.
  • the detector preferably also contains, in addition to the first sensor, a second sensor which is sensitive to a second interfering medium, in particular smoke, and a second test medium, in particular an aerosol.
  • the first sensor of the detector is sensitive to the first test medium, but not the second test medium and the second filter device is adapted to detect a test pattern of the type described above, in which a low concentration or intensity of the first test medium with a high concentration or Intensity of the second test medium is accompanied and preferably also a high concentration or intensity of the first test medium with a low concentration or intensity of the second test medium is accompanied.
  • a detector is particularly preferred in which the second filter is set up to recognize a test pattern in which high concentrations or intensities of the first test medium alternate with high concentrations or intensities of the second test medium.
  • Another particularly preferred detector according to the invention comprises a third sensor, which is designed as a temperature sensor.
  • the first sensor is here a gas sensor and the second sensor is a smoke sensor.
  • the second filter is set up to recognize a test pattern in which a low concentration of the first test medium is measured at a high concentration of the first test medium, simultaneously with the low concentration of the first test medium, a high concentration of the second test medium is accompanied and with the high concentration of the second test medium, the measured value of the second sensor rises sharply and the measured value of the third sensor drops sharply.
  • the invention also relates to a test device with which a correspondingly arranged detector can be checked by the method according to the invention.
  • the test device according to the invention for testing a detector for the detection of interfering medium, such as gas or smoke contains a dispensing device for a first and a second test medium having an adjusting device for adjusting the discharge amount of the first and second test medium.
  • the dispenser is connected to a control device.
  • the controller controls adjustment of a predetermined sequence of high and low concentrations or intensities of the first and second test media dispensed as a test pattern from the dispenser. This test pattern deviates from an interference medium alarm pattern, which can occur in the event of an alarm.
  • the dispensing device has at least one first dispensing opening from which emerges a jet or a surge of the first and / or the second test medium. This discharge opening is aligned in the delivery of the second test medium so that the first Test medium is displaced from the detection range of the first sensor.
  • a second dispensing opening is provided in the dispensing device of the test device in addition to the first dispensing opening.
  • the second dispensing opening is aligned with a first sensor such that the first test medium enters the detection area of the first sensor.
  • the first dispensing opening is also aligned with the second and preferably also with a third sensor such that the second test medium enters the detection area of the second sensor and preferably also into the detection area of the third sensor.
  • the dispensing device has at least one storage container for the first test medium, in particular a test gas, and a second storage container for the second test medium, in particular a test aerosol.
  • the storage containers are each connected via a valve to a first and / or second discharge opening for the first and / or second test medium.
  • the valves are in drive connection with at least one actuator, which is connected to set the predetermined test pattern with a control device.
  • test device additionally has a test pot which is provided with closable ventilation slots and which surrounds the detector to be tested and into which the first and / or second discharge openings protrude.
  • control device is adapted to keep the ventilation slots open during the delivery of the second test medium until the first test medium has escaped from the test head and the ventilation slots then close, wherein preferably the ventilation slots are also opened to allow the second test medium to escape.
  • FIG. 1 An in Fig. 1
  • a first sensor 2a for the detection of combustion gas, in particular of CO, as a first interference medium, which arises in a fire.
  • the first sensor can here z.
  • an electrochemical cell or a semiconductor gas sensor can be used.
  • an optical smoke sensor 2b for detecting the second interfering medium smoke.
  • the optical smoke sensor 2b comprises, in a manner known per se, an optical transmitter 3 and an optical receiver 4 for detecting the optical radiation emitted by the transmitter 3, wherein an optical measuring path 5, shown only schematically in the drawing, is formed between the transmitter 3 and the receiver 4 is.
  • This is arranged in a measuring chamber which has inlet openings through which interference medium located in the sensor area 2 of the detector 1 can enter the measuring chamber.
  • a third sensor 2c for detecting the third interfering medium temperature.
  • the sensors 2a, 2b, 2c each have a measuring signal output 6a, 6b, 6c to which a respective measuring signal 7a, 7b, 7c is applied, which is dependent on the concentration or intensity of the respective interfering medium in or on the sensors 2a, 2b, 2c.
  • the measuring signal outputs 6a, 6b, 6c are connected via a multiplexing measuring amplifier 8 to the input of an evaluation device 9 which has a first filter 10a and a second filter 10b whose inputs are each connected to the output of the multiplexing measuring amplifier 8.
  • the first filter 10a is for detecting an incipient fire (Alarm case) occurring interference medium concentration pattern (interference medium alarm pattern) set and the second filter 10b for detecting a test pattern, which differs from the incidence occurring during the incidence fire medium concentration pattern and is provided for testing the functionality of the detector 1.
  • the concentration pattern provided for testing the functionality of the detector 1 has a shorter time duration than the interference medium concentration pattern occurring in the event of an alarm.
  • the filter output 11a of the first filter 10a is connected to a first input of a signal output device 12 and the filter output 11b of the second filter 10b is connected to a second input of the signal output device 12.
  • the output of this signal output device 12 is connected to a signal output 13 of the evaluation device 9, which is connected for forwarding an alarm or a signal to confirm a positive test to a leading to a fire alarm center detector line.
  • the fire alarm unit not shown, has optical and / or acoustic display means which are activated when an alarm occurs or display a positive result of a test and possibly also a negative result if an expected positive result is absent.
  • the measurement signals 7a, 7b, 7c of the first 2a, second 2b and third 2c sensors are graphically represented in the course of an exemplary incipient fire.
  • the time is plotted on the abscissa, with the beginning of the conflagration corresponding to the time of one hundred.
  • An exemplary noise media alarm pattern that can be recognized as a fire among other patterns in the first filter 10a is approximately as follows.
  • the measurement signal 7a of the first sensor 2a reaches 40
  • the measurement signal 7b of the second sensor 2b becomes the value 60 has exceeded for at least 20 time units and the measuring signal 7c of the third sensor 2c has been increasing for at least 30 seconds and has reached a value 60.
  • the first filter has detected an alarm at the latest at time 300.
  • a filter output present at the filter output 11a of the first filter 10a is set.
  • a pending at the signal output 13 alarm signal is then also set, or active.
  • a first test medium z. B CO or H 2 delivered. This results in the first sensor 2a, a CO sensor, an abruptly rising and high measurement signal 7a.
  • the measurement signal 7a is shown graphically during the testing of the detector 1.
  • the time is plotted on the abscissa, wherein the delivery of a first test medium pulse is started in the time marked with the number "2".
  • the steep rise and the high measured value 7a are clearly visible.
  • a precisely predetermined time for the test signal to be generated is in Fig. 3 at time "4" a second test medium, z.
  • a first control signal 20 is set in the second filter 10b, in FIG Fig. 3 to recognize at time "3".
  • a second control signal 21 is set if, at time "4", the suddenly occurring low measured value 7a is detected.
  • a third control signal 22 is set at time “7” when a renewed suddenly occurring high reading 7a is measured at that time.
  • a test pass signal 16b is outputted at time "7” at the output 11b of the second filter 10b.
  • the detector 1 as in Fig. 1 shown, a second sensor 2b, which is designed as a smoke sensor. Both sensors 2a, 2b are arranged to one another such that the second test medium penetrates into the detection area of the second sensor 2b and displaces the first test medium from the detection area of the first sensor 2a. If in the detector, as in Fig. 1 shown, a second sensor 2b is present, and this is a smoke sensor, then by issuing the second test medium, a spray aerosol, at time "4" at the second sensor simultaneously with the decrease of the measurement signal 7a of the first sensor 2a, a high measurement signal 7b.
  • a fourth control signal 23 is set at time "5".
  • three control signals have already been set at the time "5", it could already be detected at this time that a test pattern is present and the sensors 2 a, 2 b checked are functioning. Therefore, at the latest at time "7", but possibly even at time "5", at the output 11 b of the second filter 10b a "passed test" signal 16b is output.
  • the second test medium spray aerosol escapes from the bottle, it cools down by expansion.
  • the aerosol impinges on the third sensor 2c it is also cooled and further cooled by the subsequent evaporation of the aerosol which has hit the third sensor 2c.
  • the cooling of the third sensor 2c leads to a sinking measurement signal 7c at the third sensor 2c. This is in Fig. 3 shown approximately. Thereafter, the third sensor heats up again, resulting in a rising measurement signal 7c again. This too is in Fig. 3 approximately indicated.
  • a "passed test" signal 16b is output, which indicates the operability of all three sensors 2a, 2b, 2c of the detector 1.
  • test pass signal is output only at the time "7" when all five control signals 20, 21, 22, 23, 24 are set. So that only all control signals can be set simultaneously when a predetermined test pattern occurs, all control signals are reset after a predetermined period of time, which happens in the example for all control signals 20, 21, 22, 23, 24 simultaneously at time "11".
  • the test media can be dispensed, for example, by means of two spray bottles by hand according to the test concentration pattern.
  • the delivery of the test media is carried out by means of a in the 4 and 5
  • This has a storage container 19a for the first test medium and a storage container 19b for the second test medium in which they are stored under pressure.
  • the storage container 19a, 19b are each connected via a respective valve not shown in detail in the drawing, each having a discharge opening 25a, 25b for the first and second test medium.
  • the valves are each with an actuator in Drive connection, which may for example have an adjustable by an electromagnet against a restoring force anchor.
  • the actuators are each connected to the control input of a control device 26, which is adapted to control the valves for generating the predetermined test pattern.
  • the control device 26 is connected to an actuating element, which in the embodiments according to 4 and 5 is designed as an electrical button 27. Upon actuation of the button 27, the delivery of the first and second test medium is triggered with the predetermined test pattern.
  • the storage containers 19a, 19b are inserted into a holder 28, which is connected to a rod 29.
  • the discharge openings 25a, 25b are aligned with each other such that when the first test medium is dispensed, the first test medium enters the detection area of the first sensor 2a, and when the second test medium is dispensed, the second test medium likewise enters the detection area of the first sensor 2a, in order to displace the first test medium therefrom, and in addition to reach the second test medium also in the detection area of the second sensor 2b and also to let the third sensor 2c meet.
  • a second button 27 is attached to the lower end of the rod 29, so that even when using a long rod, the delivery of the test pattern can be conveniently triggered from the lower end of the rod 29 from.
  • a test head 30 which can be placed over the detector 1.
  • the discharge ports 25a, 25b are in this case via lines 32a and 32b with the storage containers 19a and 19b and are in the test pot 30 to each other aligned so that upon delivery of the first test medium, the first test medium enters the detection range of the first sensor 2a, and when the second test medium, the second test medium also enters the detection range of the first sensor 2a to displace the first test medium and in addition
  • the second test medium can also enter the detection area of the second sensor 2b and also let it hit the third sensor 2c.
  • the first and possibly also the second test medium can be easily displaced from the detector 1, the test head 30, the actual function is that the test medium is kept long in the detector 1, and thus only little test medium is needed, closable ventilation slots on, which are opened when the second test medium from the control unit 26. Through the opened ventilation slots 31, the first test medium can then escape from the test head 30.
  • the test pot 30 By using the test pot 30, the required amount of the first and second test media can be reduced even when using the method according to the invention.
EP12006679.0A 2012-09-24 2012-09-24 Avertisseur, dispositif de test et procédé de contrôle d'un avertisseur Active EP2711907B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12006679.0A EP2711907B1 (fr) 2012-09-24 2012-09-24 Avertisseur, dispositif de test et procédé de contrôle d'un avertisseur
PL12006679T PL2711907T3 (pl) 2012-09-24 2012-09-24 Sygnalizator, urządzenie testujące i sposób testowania sygnalizatora

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12006679.0A EP2711907B1 (fr) 2012-09-24 2012-09-24 Avertisseur, dispositif de test et procédé de contrôle d'un avertisseur

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EP2711907A1 true EP2711907A1 (fr) 2014-03-26
EP2711907B1 EP2711907B1 (fr) 2015-01-21

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PL (1) PL2711907T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3239949A1 (fr) * 2016-04-15 2017-11-01 Honeywell International Inc. Dispositif de test de détecteur d'incendie amélioré et procédés associés
CN109087490A (zh) * 2018-09-03 2018-12-25 山东科技大学 一种基于报警持续时间特征的干扰报警识别方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4715985A (en) 1984-10-30 1987-12-29 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes George Claude Composition for checking the functioning of fire detection installations and application to various types of detectors
EP1184826A2 (fr) * 2000-08-18 2002-03-06 Robert Bosch Gmbh Dispositif pour le test fonctionnel d'un capteur de température dans un détecteur
WO2002027293A2 (fr) * 2000-09-29 2002-04-04 Tormaxx Gmbh Detecteurs de gaz ou de chaleur, gazogene et generateur de chaleur et de gaz de fumees, procede pour controler un detecteur de gaz ou de chaleur et procede pour controler un detecteur de gaz de fumees
GB2432703A (en) * 2005-11-24 2007-05-30 Sata Ltd Testing hazard detectors using a plurality of test stimuli
EP1286320B1 (fr) 2001-08-16 2007-11-07 HEKATRON Technik GmbH Détecteur, procédé pour le fonctionnement d'un détecteur et dispositif de test pour un détecteur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4715985A (en) 1984-10-30 1987-12-29 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes George Claude Composition for checking the functioning of fire detection installations and application to various types of detectors
EP1184826A2 (fr) * 2000-08-18 2002-03-06 Robert Bosch Gmbh Dispositif pour le test fonctionnel d'un capteur de température dans un détecteur
WO2002027293A2 (fr) * 2000-09-29 2002-04-04 Tormaxx Gmbh Detecteurs de gaz ou de chaleur, gazogene et generateur de chaleur et de gaz de fumees, procede pour controler un detecteur de gaz ou de chaleur et procede pour controler un detecteur de gaz de fumees
EP1286320B1 (fr) 2001-08-16 2007-11-07 HEKATRON Technik GmbH Détecteur, procédé pour le fonctionnement d'un détecteur et dispositif de test pour un détecteur
GB2432703A (en) * 2005-11-24 2007-05-30 Sata Ltd Testing hazard detectors using a plurality of test stimuli

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3239949A1 (fr) * 2016-04-15 2017-11-01 Honeywell International Inc. Dispositif de test de détecteur d'incendie amélioré et procédés associés
US9922542B2 (en) 2016-04-15 2018-03-20 Honeywell International Inc. Fire detector test device and methods therefor
CN109087490A (zh) * 2018-09-03 2018-12-25 山东科技大学 一种基于报警持续时间特征的干扰报警识别方法

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PL2711907T3 (pl) 2015-08-31
EP2711907B1 (fr) 2015-01-21

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