EP1286320A2 - Détecteur, procédé pour le fonctionnement d'un détecteur et dispositif de test pour un détecteur - Google Patents

Détecteur, procédé pour le fonctionnement d'un détecteur et dispositif de test pour un détecteur Download PDF

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Publication number
EP1286320A2
EP1286320A2 EP02017893A EP02017893A EP1286320A2 EP 1286320 A2 EP1286320 A2 EP 1286320A2 EP 02017893 A EP02017893 A EP 02017893A EP 02017893 A EP02017893 A EP 02017893A EP 1286320 A2 EP1286320 A2 EP 1286320A2
Authority
EP
European Patent Office
Prior art keywords
concentration
alarm
test
detector
medium
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
EP02017893A
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German (de)
English (en)
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EP1286320B1 (fr
EP1286320A3 (fr
Inventor
Siegfried Roeske
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 Technik GmbH
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Hekatron Technik 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.)
Filing date
Publication date
Application filed by Hekatron Technik GmbH filed Critical Hekatron Technik GmbH
Publication of EP1286320A2 publication Critical patent/EP1286320A2/fr
Publication of EP1286320A3 publication Critical patent/EP1286320A3/fr
Application granted granted Critical
Publication of EP1286320B1 publication Critical patent/EP1286320B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means

Definitions

  • the invention relates to a method for operating a detector for detecting gas, smoke or the like interfering medium, in particular a fire detector, which detector has a sensor for measuring the concentration of the interfering medium, wherein the concentration measuring signal of the sensor of a filter operation for detecting a at is subjected to an interference case occurring Störmedium-concentration pattern, and wherein upon detection of this concentration pattern of the alarm case is registered.
  • the invention relates to a detector for the detection of gas, smoke or the like interfering medium, in particular fire detector, with at least one measuring signal output having a sensor for measuring the concentration of the interfering medium and with an evaluation device which is connected to the Meßsignalausgang a filter for detecting a at an interference case occurring interference medium concentration pattern, the filter output is connected to an alarm signal output of the evaluation. Furthermore, the invention relates to a test device for testing a detector for the detection of gas, smoke or the like interfering medium, with a discharge device for the disturbance medium. From US 6 198 399 B1 is already known a method of the type mentioned, in which an interior of a building is monitored for reporting an incipient fire by means of a mounted on the ceiling fire detector.
  • the fire detector has a sensor for detecting a disturbing medium occurring in the vicinity of the fire, such as a fire gas and / or smoke.
  • a disturbing medium occurring in the vicinity of the fire such as a fire gas and / or smoke.
  • the dependent of the concentration of the interfering medium in the detection range of the sensor sensor measurement signal is supplied to an alarm filter for detecting an incipient fire occurring interference medium concentration pattern.
  • the alarm filter is primarily used to distinguish in the measurement signal to be detected, attributable to a fire signal components of such signal components that are not caused by a fire, so that the alarm is triggered only when a fire.
  • the alarm filter detects the alarm after the interference medium concentration has increased only with a certain delay time.
  • the Dispenser is provided by an assistant with the help of Rod positioned under the fire detector, so that of the Dispensing device emitted smoke in the detection area of the Sensors of the fire detector arrives.
  • the assistant checks then whether the fire detector triggers an alarm. Because the alarm filter must trigger the alarm only with a certain delay time the dispenser relatively long under the fire detector be positioned to trigger the alarm. Especially at larger fire alarm systems containing several 100 fire detectors Therefore, the testing of the fire alarm device is required with a considerable amount of time and thus too Personnel costs associated.
  • the positioning is the dispenser under the fire detector for the Assistant still relatively exhausting, as this during the Positioning the rod with the arranged thereon Dispensing device must constantly hold high.
  • the solution to this problem is that for testing the Operational capability of the detector in the detection range of the sensor Interference medium with one of the occurring in the event of an alarm Interference medium concentration pattern deviating interference medium concentration pattern is issued that the concentration measurement signal of the sensor in addition to the first filtering operation of a second filter operation for detecting the in the test subject to the interference medium concentration pattern occurring, and that upon recognition of this test concentration pattern, the Occurrence of an alarm case is registered.
  • an interference medium concentration pattern be provided that has a shorter time than that interference medium concentration patterns occurring in the event of an alarm, so that the detector with correspondingly little time can be tested. This then results simultaneously still a small interference medium consumption, so that one for delivery the interference medium provided test device for testing a correspondingly large number of detectors can be used.
  • a fast and cost effective Checking the detectors during commissioning and / or at a revision of the plant is advantageousously, in the Test both the proper functioning of the sensor as well as the facility for registering or displaying the Alarm checked.
  • the Concentration measurement signal is low-pass filtered that the lowpass filtered measurement signal with an alarm concentration threshold is compared, and that the Alarm case is registered when the low-pass filtered Measurement signal exceeds the alarm concentration threshold.
  • the interference medium concentration pattern occurring in the event of an alarm can thereby avoid any interference signal components, which should not trigger an alarm, can be distinguished. Consequently the alarm case can be reliably detected and registered become.
  • the Concentration measurement signal with a test concentration threshold is compared, which is greater than the alarm concentration threshold and that the alarm case registers when the concentration measurement signal is the test concentration threshold exceeds.
  • the detector is then in the detection area of the Sensors emitted interference medium with a concentration higher is considered the highest in the normal operation of the detector or at If an alarm occurs, the concentration of interfering media is increased is, so that the test alarm case by comparing the Meßsignalpegels with the test concentration threshold on easily recognized and then registered.
  • the concentration of Interference medium at least once alternately increased and reduced is checked in the second filter operation, if the Concentration measurement signal at least once at least one upper test concentration threshold and at least one lower test concentration threshold alternately over- and falls short, and that in recognizing this alternately supra and Falling below the occurrence of an alarm case registered becomes.
  • a sequence of high and low interference medium concentrations generated which is a kind Encoding or signature based on that for the test alarm case provided interference medium concentration pattern with great precision from the rest in practical operation can distinguish occurring concentration pattern. It is this coding is preferably designed as a digital word.
  • a first Verification which checks whether the Concentration measurement signal a first upper test concentration threshold exceeds, preferably is greater than the alarm threshold that a second Verification is performed, which checks whether the Concentration measuring signal in one on exceeding the first upper test concentration threshold following Time a lower test concentration threshold which is less than the first upper test concentration threshold, that a third review in which it is checked whether the concentration measurement signal in one on falling below the lower test concentration threshold following time a second exceeds the upper test concentration threshold, the larger is the lower test concentration threshold, and that the Test alarm case is registered when the concentration measurement signal at the third check, the second upper test concentration threshold exceeds.
  • the test alarm case This makes it easy to quickly and reliably be detected.
  • a Display is activated when the concentration measurement signal at the first check the first upper test concentration threshold exceeds.
  • the the functional test of the detector Person performing can then use the ad to simple Detect that the detector is crossing the upper Test concentration threshold has detected and can then Delivery of the interfering medium according to the further course of for testing provided Störmedium-concentration pattern Taxes.
  • At least one lower test concentration threshold value at least twice as big in particular at least three and a half times as large and preferred at least five times the alarm threshold.
  • at least one upper test concentration threshold value at least four times as big in particular at least seven times as large and preferred at least ten times the alarm threshold. Of the Test alarm case can then be detected with even greater precision and be registered.
  • the above object is related to the detector solved in that the evaluation device in addition to the first filter a second, with the measuring signal output of the sensor connected filter, which is used for detecting one of the interference medium concentration pattern occurring in the event of an alarm different, for the test of the functionality of the detector designed interference medium concentration pattern is formed, that the filter outputs of the first filter and the second Filters each connected to an input of an OR gate are and that the output of this OR gate with the Alarm signal output of the evaluation device is connected.
  • the second, intended for the detection of the test alarm case Filter can then access a noise medium concentration pattern be tuned that has a shorter time than that interference medium concentration patterns occurring in the event of an alarm.
  • a correspondingly short test concentration pattern be generated in the area of the detector, so that the detector tested with correspondingly little time can be.
  • the second filter is connected downstream of the sensor and evaluates its measurement signal, is in the functional test of Detectors also tested the functionality of the sensor.
  • the sensor may, for example, an optical measuring path and / or have a Ionisationsmeßhunt. Because the output of the second Filters via the OR gate with the alarm signal output of Evaluation device is connected in testing as well the alarm route and the device for registering or displaying the alarm case checked.
  • the detector that has first filter one with the measuring signal output of the sensor connected low-pass filter on which a comparator for comparing the low-pass filtered measuring signal with a Alarm concentration threshold is followed, the Output of this comparator with the filter output of first filter is connected.
  • the occurring in the event of an alarm Interference medium concentration pattern can then be of any Interference signal components that should not trigger an alarm, be differentiated.
  • the detector thus enables one reliable registration or display of the alarm case.
  • the second filter with a comparator circuit at least one first comparator for comparing the Concentration measurement signal having a lower test concentration threshold and at least a second Comparator for comparing the concentration measuring signal with has an upper test concentration threshold, and that these comparator circuits with a logical combination circuit for detecting at least one alternate over and over Below the upper and lower test concentration thresholds whose output with the Filter output of the second filter is connected.
  • these comparator circuits with a logical combination circuit for detecting at least one alternate over and over Below the upper and lower test concentration thresholds whose output with the Filter output of the second filter is connected.
  • To test the Operability of the detector can then in the detection area the sensor a sequence of high and low levels of interfering medium be generated, so that a kind of coding or signature results using the comparator circuit and the logic operation circuit detecting the test alarm case with great precision.
  • the comparator circuit and / or the logic operation circuit have discrete electronic components and / or be realized in a microcomputer by software.
  • a comparator output is the first Comparator circuit and / or the logic operation circuit with an input, preferably an optical one Indicator having display device connected.
  • the person performing the function test of the detector can then easily recognize by the display that the detector exceeding the upper test concentration threshold has detected and can then the release of the interfering medium according to the further course of the interference medium concentration pattern, on which the second filter tuned is, control.
  • the above object is related to the Test device achieved in that the dispensing device a Adjustment device for setting the delivery amount of the Interference medium having, with a control device for Setting a given concentration pattern of emitted interference medium is connected.
  • this can be done by testing the detector provided interference medium concentration pattern with large Accuracy and thus with a correspondingly low consumption be generated by interference medium.
  • the the test of the detector performing person needs the test device only on the Position detector and then release the interfering medium activate, after which this automatically with the given Test concentration pattern in the detection area of the detector is released.
  • the test device thus enables easy way of checking the detector at the in Operation and / or a revision.
  • the dispenser comprises at least one storage container for the disturbance medium, which has a valve with a Outlet opening for the disturbance medium is connected, wherein the Valve is drivingly connected to an actuator, the for setting the predetermined interference medium concentration pattern is connected to the control device. It can then storage container with the valve as a spray bottle be formed in which the interference medium stored under pressure is.
  • the test device then enables the delivery of one the detector directed spray, which in addition Sprühmedium can be saved.
  • the test device can a microcomputer in which the test interference medium concentration pattern is stored.
  • a generally designated 1 detector for reporting a Emergence fire has a sensor 2 for the detection of Fire gas, smoke or the like arising in a fire Disruptive medium.
  • the sensor 2 comprises in a conventional manner an optical transmitter 3 and an optical receiver 4 for Detection of the optical radiation emitted by the transmitter 3, wherein between the transmitter 3 and the receiver 4 one in the Drawing only schematically illustrated optical measuring section. 5 is formed. This is arranged in a measuring chamber, the Having inlet openings through which in the detection area of the Detector 1 located in the measuring chamber can.
  • the sensor 2 has a Meßsignalausgang 6, to which a from the concentration of the interfering medium in the measuring chamber dependent Measuring signal 7 is present.
  • the measuring signal output 6 is connected via a Measuring amplifier 8 with the input of an evaluation device. 9 connected to a first filter 10a and a second filter 10b whose inputs each with the measuring signal 6 of the Sensors 2 are connected.
  • the first filter 10a is for detection one occurring during a fire (alarm case) Störmedium-concentration pattern and the second filter 10b for Recognition of one of those occurring during the incipient fire Interference medium concentration pattern deviating, for testing the Functionality of the detector 1 provided test interference medium concentration pattern educated. That to test the Functionality of the detector 1 provided concentration pattern has a shorter duration than that in the Alarm case occurring interference medium concentration pattern.
  • Fig.1 it can be seen that the filter output 11a of the first Filter 10a with a first input of an OR gate 12 and the filter output 11b of the second filter 10b with a second Input of the OR gate 12 is connected.
  • the output of this Or gate 12 is connected to an alarm signal 13 of the Evaluation device 9 connected to the forwarding of the Alarms to a leading to a fire alarm panel Detector line is connected.
  • the fire alarm panel points optical and / or acoustic display means, the Occurrence of an alarm to be activated.
  • the measuring signal 7 and the means of the first Filter 10a filtered measuring signal 14 in the course of a Emergence fire shown graphically.
  • the time is applied, whereby the beginning of the emergence fire the time equals zero. It can be clearly seen that the about the concentration of the interfering medium in the measuring chamber corresponding signal level of the measuring signal 7 at the beginning of the Genesis is still very low and then quickly over an alarm concentration threshold 15 increases. After that the measuring signal 7 remains on average approximately at a constant level.
  • Fig.2 is further seen that the first filter 10a Having low-pass characteristic and that the low-pass filtered Measurement signal 14 compared to the unfiltered measurement signal 7 smoothed is.
  • An existing in the low-pass filtered measuring signal 14 Staging results from the fact that the measuring signal 7 in the in Fig. 2 scanned from the ordinate times scanned and then is digitally processed in the first filter 10a.
  • Low-pass filtering is the filtered measuring signal 14 with the help a comparator with the alarm concentration threshold 15 compared. If the low-pass filtered measurement signal 14a is the alarm concentration threshold 15 is exceeded, one at the Filter output 11a of the first filter 10a pending filter output signal 16a set. On at the alarm signal output 13 pending alarm signal is then also set or active.
  • test device 18 interference medium with one of the interference medium concentration patterns occurring in the event of an alarm deviating test interference medium concentration pattern issued. 4
  • the measuring signal 7 during the Testing the detector 1 shown graphically.
  • On the abscissa time is plotted, where in the number "3" marked time with the delivery of a first disturbance medium pulse is started. It can be clearly seen that the Measurement signal up to above an upper test concentration threshold 19, which is about ten times the alarm concentration threshold 15, rising steeply and then first remains constant for a given period of time.
  • Time is from the measuring signal 7, a first measured value and then we in the second filter 10b a first one Check carried out, in which the first measured value with the upper test concentration threshold 19 is compared. If the first measured value is greater than the upper test concentration threshold 19, we a first control signal 20 set for a predetermined period of time T1.
  • the concentration becomes of the interfering medium in the detection range of the sensor 2 by Interrupt the disturbance medium supply below a lower test concentration threshold 21 lowered. This is about five times as large as the alarm concentration threshold 15.
  • the concentration becomes the interference medium in the detection range of the sensor 2 by delivery another interference medium pulse again above the top Test concentration threshold 19 raised.
  • a third measured value is sampled from the measuring signal 7, and then a third check is carried out in the second filter 10b, in which case the third measured value coincides with the upper test comparison threshold 19 is compared. If the third measurement value is greater than the upper test concentration threshold 19 and the second control signal 22 is set, a filter output 16b present at the filter output 11b of the second filter 10b is set which triggers the test alarm. This is indistinguishable at the alarm signal output 13 of the detector 1 from a real alarm case. A pending at the alarm signal output 13 alarm signal is then also set or activated via the OR gate 12. This alarm signal can be reset as needed from the fire panel. It can also be seen in FIG.
  • a third control signal 23 is set simultaneously with the second control signal 22 and reset upon activation of the filter output signal 16b.
  • This third control signal 23 controls a provided on the detector 1 light emitting diode or the like optical display element which indicates after the first disturbance medium pulse, that this was detected by the detector 1 and that now the second noise medium pulse of the test concentration pattern are delivered can trigger the test alarm.
  • This second interference medium pulse must be detected within the time period T1 of the detector 1, so that it triggers the test alarm.
  • each at least the sampling period T of the second filter 10b corresponds to a sub-scan of the To avoid measuring signal.
  • the left pictured, not belonging to the test concentration pattern Störmedium pulse is shorter than the sampling period T and that this interference medium pulse is between two sampling times. It therefore remains in the filtering in the second filter 10b unconsidered.
  • the interfering medium can be, for example, by means of a spray bottle delivered by hand according to the test concentration pattern become.
  • the delivery of the interfering medium takes place with the aid of the test device 18 shown in FIG has a storage container 24 for the disturbance medium, in which this is stored under pressure.
  • the storage container 24 is via a not shown in detail in the drawing valve an outlet port 25 connected to the interference medium.
  • the valve is in drive connection with an actuator which For example, one by an electromagnet against a Resetting force adjustable armature may have.
  • the Actuator is connected to the control input of a control device 26 connected to the valve for generating the predetermined Test concentration pattern is controllable.
  • the control device 26 is connected to an actuator that at the embodiment of Figure 6 as an electrical button 27th is trained. When you press the button 27, the levy the interfering medium with the predetermined test concentration pattern triggered.
  • the detector 1 In the method for operating the detector 1 for the detection of Gas, smoke or the like interfering medium, in particular one Fire detector, the detector 1, a sensor 2 for measuring the Concentration of the interfering medium, so the concentration measurement signal 7 of the sensor 2 of a first filtering operation for detecting an interference medium concentration pattern occurring in the event of an alarm subjected. Upon recognition of this concentration pattern the alarm is registered.
  • the concentration measurement signal 7 of the sensor becomes in addition to the first filter operation a second filter operation for detecting the at the interference medium concentration pattern occurring during the test subjected. Upon detection of this test concentration pattern the occurrence of a test alarm is registered.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Computer Security & Cryptography (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Emergency Management (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP02017893A 2001-08-16 2002-08-09 Détecteur, procédé pour le fonctionnement d'un détecteur et dispositif de test pour un détecteur Expired - Lifetime EP1286320B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10139993A DE10139993B4 (de) 2001-08-16 2001-08-16 Melder, Testvorrichtung zum Prüfen eines Melders und Verfahren zum Betreiben eines Melders
DE10139993 2001-08-16

Publications (3)

Publication Number Publication Date
EP1286320A2 true EP1286320A2 (fr) 2003-02-26
EP1286320A3 EP1286320A3 (fr) 2003-04-23
EP1286320B1 EP1286320B1 (fr) 2007-11-07

Family

ID=7695476

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02017893A Expired - Lifetime EP1286320B1 (fr) 2001-08-16 2002-08-09 Détecteur, procédé pour le fonctionnement d'un détecteur et dispositif de test pour un détecteur

Country Status (5)

Country Link
EP (1) EP1286320B1 (fr)
AT (1) ATE377816T1 (fr)
DE (2) DE10139993B4 (fr)
ES (1) ES2295266T3 (fr)
PT (1) PT1286320E (fr)

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
CN113763665A (zh) * 2021-11-09 2021-12-07 博兴融智科技创新发展有限公司 一种基于人工智能的消防报警装置
DE102021002143A1 (de) 2021-01-19 2022-07-21 Divis Gmbh Messsystem

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2711907B1 (fr) 2012-09-24 2015-01-21 Hekatron Vertriebs GmbH Avertisseur, dispositif de test et procédé de contrôle d'un avertisseur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5945924A (en) * 1996-01-29 1999-08-31 Marman; Douglas H. Fire and smoke detection and control system
US6198399B1 (en) * 2000-03-09 2001-03-06 Martin P. Mattis Smoke detector test device and method for manufacture

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3842080A1 (de) * 1988-12-14 1990-06-28 Merten Gmbh & Co Kg Geb Schaltungsanordnung fuer einen infrarot-raumueberwachungsdetektor mit wenigstens zwei gekoppelten detektoren
GB9309115D0 (en) * 1993-05-04 1993-06-16 No Climb Prod Ltd Smoke testing detector sensitivity testing apparatus
DE10040570C1 (de) * 2000-08-18 2002-04-18 Bosch Gmbh Robert Prüfvorrichtung zur Funktionsprüfung eines Temperaturfühlers eines Melders, Melder und Verfahren zur Funktionsprüfung eines Melders

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5945924A (en) * 1996-01-29 1999-08-31 Marman; Douglas H. Fire and smoke detection and control system
US6198399B1 (en) * 2000-03-09 2001-03-06 Martin P. Mattis Smoke detector test device and method for manufacture

Cited By (4)

* 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
DE102021002143A1 (de) 2021-01-19 2022-07-21 Divis Gmbh Messsystem
CN113763665A (zh) * 2021-11-09 2021-12-07 博兴融智科技创新发展有限公司 一种基于人工智能的消防报警装置

Also Published As

Publication number Publication date
DE10139993B4 (de) 2007-10-25
ES2295266T3 (es) 2008-04-16
EP1286320B1 (fr) 2007-11-07
DE50211156D1 (de) 2007-12-20
DE10139993A1 (de) 2003-03-13
ATE377816T1 (de) 2007-11-15
PT1286320E (pt) 2008-02-15
EP1286320A3 (fr) 2003-04-23

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