EP2073178B1 - Procédé de contrôle électrique de la capacité fonctionnelle d'un émetteur de signal piézoélectrique d'un avertisseur - Google Patents

Procédé de contrôle électrique de la capacité fonctionnelle d'un émetteur de signal piézoélectrique d'un avertisseur Download PDF

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Publication number
EP2073178B1
EP2073178B1 EP20070150340 EP07150340A EP2073178B1 EP 2073178 B1 EP2073178 B1 EP 2073178B1 EP 20070150340 EP20070150340 EP 20070150340 EP 07150340 A EP07150340 A EP 07150340A EP 2073178 B1 EP2073178 B1 EP 2073178B1
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EP
European Patent Office
Prior art keywords
signal generator
signal
alarm
functionality
piezo
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.)
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Application number
EP20070150340
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German (de)
English (en)
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EP2073178A1 (fr
Inventor
Christoph Kroh
Manfred Hentschel
Dieter Kilb
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.)
Atral-Secal GmbH
Techem Energy Services GmbH
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Atral-Secal GmbH
Techem Energy Services GmbH
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Priority to EP20070150340 priority Critical patent/EP2073178B1/fr
Publication of EP2073178A1 publication Critical patent/EP2073178A1/fr
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Publication of EP2073178B1 publication Critical patent/EP2073178B1/fr
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • 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
    • G08B29/126—Checking intermittently signalling or alarm systems of annunciator circuits
    • 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

Definitions

  • the function check is subdivided into the visual inspection and the so-called alarm check. During the visual inspection it should be determined whether the smoke alarm device is still able to pass smoke particles into its interior smoke chamber, or whether it is e.g. completely soiled, masked or mechanically damaged in any way.
  • the alarm check is to ensure that the smoke detector can also generate the required types of alarm in the event of smoke.
  • the mandatory type of alarm is the acoustic alarm.
  • an additional visual alarm can be provided.
  • the alarm check can alternatively be performed remotely.
  • the standard in an appendix states that the triggering signal from a distance is in principle a parallel function to the manually operated test button and that necessary equipment must be accessible in the outdoor area of the smoke alarm device.
  • smoke alarms with radio transmission of their state to a polling point are allowed and smoke detectors that communicate with each other either via wire connection or wireless connections, so-called linked smoke detectors.
  • the aim of the invention is therefore to provide a method to allow the external service provider the possibility of a standard-compliant alarm test from a distance, in warning of any kind such as the already mentioned Smoke detectors, but also with gas, humidity or flame alarms or similar. with piezoelectric signalers.
  • An additional aim of the invention is to carry out this alarm check as inaudibly as possible for the respective renter. This is urgently needed because in the least cases it is possible to agree with the tenant on the part of the external service provider an exact date on which a remote alarm is audited. Without such a vote, of course, a loud alarm test from a distance can not be carried out, since the tenant then registered an alarm and possibly without checking whether there is actually a cause for the alarm, calls the fire brigade or takes similar unnecessary measures.
  • a communication link between the alarm and the remote location of the alarm or checkpoint.
  • This communication link can be made via different media. Most meaningful is the structure of a radio link. Of course, you can also choose a communication link, which consists of a wire connection between the alarm and, for example, a located in the stairwell of a residential building second communication point. Also conceivable are other signal communication options known today via infrared, etc. The type of transmission of the necessary signals via a Communication link is not relevant to the invention and forms the state of the art known today.
  • the method according to the invention provides that the signal generator is supplied with such an electrical control signal which is dimensioned by the time duration and magnitude of the signal in such a way that it permits largely silent activation of the signal generator and that the electrical response signal of the signal generator is detected upon activation and compared with a previously determined desired signal. If the response signal coincides with the desired signal, the given functionality of the signal generator is concluded.
  • the signal generator is excited in its activation to vibrate in its natural frequency.
  • the previously determined desired signal is stored in a value table in a memory of an electronic unit of the warning alarm.
  • the table of values is in principle organized in the manner of a look-up table. In it, binary values are stored, which represent the course of the desired signal.
  • the response signal is measured in the form of its natural oscillation and in addition a summation of successive maximum and minimum voltage values U-min. and U-max. is determined, from which the volume of the signaler in case of alarm under nominal operating conditions is concluded.
  • the already mentioned value table can advantageously be extended by values that have been determined at different ambient temperatures for the desired signal. This takes into account the fact that the alarm can be installed in rooms with different ambient temperatures or that the room temperature fluctuates.
  • the check of the functionality of the signal generator is advantageously over a fixed predetermined period, for example, every 7 days made.
  • the method is used wirelessly or via a wiring.
  • the wireless signal communication by radio is preferred.
  • a smoke alarm device which corresponds to the state of the art today, then it consists according to FIG. 1 a housing (1), a smoke chamber (2), electronics (3), an acoustic signal transmitter (4) and possibly a light-emitting diode (5).
  • a battery is used in most cases (6).
  • the smoke detector can have an integrated power supply (7) and an additional backup battery (6). operate.
  • the housing is to be designed so that smoke can pass through the housing (1) to the smoke chamber (2), eg lamellar constructions (8).
  • a button (9) is provided to trigger the manual alarm check.
  • the button (9) is pressed and thus the electronics (3) controlled manually, whereupon the electronics (3) then controls the acoustic alarm (4), which is usually designed as a piezo-electric acoustic signal generator.
  • the electronic device then also activates the light-emitting diode (5).
  • the alarm checking process is completed, or after a certain period of time, for example 10 seconds, automatically terminated. No smoke is needed for this alarm test, but it simulates, via this special function, that smoke has penetrated into the smoke chamber in an amount sufficient to trigger an alarm.
  • the acoustic alarm transmitter (4) In order for the acoustic alarm transmitter (4) to sound at its full volume in accordance with the standard, it must be controlled with a specific voltage from the electronics (3). In the case of a piezo-electric alarm, the volume depends inter alia on the drive voltage. In order to make an audible alarm inaudible, you can control the piezoelectric acoustic signal generator with a very low voltage and this only for a very short period of time. In this case, as an acoustic signal contains only an almost inaudible noise, which goes down in the general background noise of the usual environment. In order to be able to use this silent function in accordance with the standards, it must first be ensured that it can be concluded from the silent mode that, in the event of an alarm, the piezoelectric acoustic signal generator applies the required standard-compliant volume.
  • this is ensured by completely measuring the piezo-electric acoustic signal transmitter to be used in such a way that it is driven with different operating voltages from zero to its maximum voltage, for example in 0.1 V steps.
  • the piezoelectric acoustic signal generator is excited to oscillate in its natural frequency. With just one excitation, the vibration will take the form of a decaying sinusoid. According to FIG. 2 results in a decaying sine with decreasing U-min. and U-max. Peak values at the feedback / feedback output of the piezo. Take, for example, eight oscillations, we obtain the period and thus the frequency by dividing the time t for 8 oscillations by 8 and calculates the frequency from the period obtained. In this case, this is then the natural frequency oscillation of the piezoelectric acoustic signal generator. At the same time you can between according to FIG. 2 Eight different U-max. and U-min. values form differences and form the sum of all U-max.
  • a check of the piezoelectric acoustic signal generator is made by controlling it with the same voltage stored in the value table. That the piezo-electric acoustic signal generator is driven with a specific voltage value, then the natural frequency is determined and then the sum of the first eight U-max. and U-min. values is formed. The resulting result is then compared with the value table stored in the memory (11). If no significant deviations are detected here, it can be concluded that the piezoelectric acoustic signal transmitter is still in a ready state.
  • this test result from the electronics (3) via a radio transmitter (10) at certain time intervals, e.g. every minute, sent and can be received and evaluated with a receiver.
  • a so-called transceiver (12) that is to say a combination of receiver and transmitter, is located in the smoke alarm device instead of a transmitter (10).
  • the smoke detectors are controlled via the transceiver (12), whereupon the transceiver (12) via the electronics (3) queries the memory (11) and the result is then subsequently transmitted via the transceiver (12) to the interrogator.
  • the requesting body via the transceiver (12) the electronics (3) request to control the piezoelectric alarm transmitter (4) according to the invention. Subsequently, the electronics (3) directly transmits the result via the transceiver (12) to the interrogator.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Alarm Systems (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)

Claims (5)

  1. Procédé de contrôle électrique de la capacité de fonctionnement d'un émetteur de signaux piézoélectrique (4) d'un avertisseur dans le cadre d'une vérification d'alarme, dans lequel un signal de commande électrique est amené à l'émetteur de signaux (4), la durée et la hauteur dudit signal permettant une activation en grande partie silencieuse de l'émetteur de signaux (4), et dans lequel le signal électrique de réponse de l'émetteur de signaux (4) à l'activation est mesuré sous la forme de son oscillation propre et comparé avec un signal de référence préalablement déterminé, et une sommation de valeurs de tension maximales et minimales Umin et Umax successives est déterminée en plus, la coïncidence du signal de réponse avec le signal de référence permettant de déduire la capacité de fonctionnement donnée de l'émetteur de signaux (4) et la sommation des valeurs de tension le volume sonore de l'émetteur de signaux (4) en cas d'alarme dans les conditions nominales de fonctionnement.
  2. Procédé selon la revendication 1, dans lequel, lors de son activation, l'émetteur de signaux (4) est mis en oscillation à sa fréquence propre.
  3. Procédé selon la revendication 1 ou 2, dans lequel le signal de référence préalablement déterminé est enregistré dans une table de valeurs dans une mémoire (11) d'une électronique (3) de l'avertisseur.
  4. Procédé selon la revendication 1, dans lequel la table de valeurs est étendue à des valeurs qui ont été déterminées à différentes températures ambiantes.
  5. Procédé selon une des revendications 1 à 4, dans lequel un contrôle de la capacité de fonctionnement de l'émetteur de signaux (4) est effectué sur un intervalle de temps pouvant être prédéfini de manière fixe.
EP20070150340 2007-12-21 2007-12-21 Procédé de contrôle électrique de la capacité fonctionnelle d'un émetteur de signal piézoélectrique d'un avertisseur Active EP2073178B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20070150340 EP2073178B1 (fr) 2007-12-21 2007-12-21 Procédé de contrôle électrique de la capacité fonctionnelle d'un émetteur de signal piézoélectrique d'un avertisseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070150340 EP2073178B1 (fr) 2007-12-21 2007-12-21 Procédé de contrôle électrique de la capacité fonctionnelle d'un émetteur de signal piézoélectrique d'un avertisseur

Publications (2)

Publication Number Publication Date
EP2073178A1 EP2073178A1 (fr) 2009-06-24
EP2073178B1 true EP2073178B1 (fr) 2013-08-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016110680A1 (de) 2016-06-09 2017-12-14 Techem Energy Services Gmbh Schaltungsanordnung und Verfahren zur Ansteuerung und Überprüfung der Funktion eines piezo-elektrischen Schallgebers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130147620A1 (en) * 2011-12-12 2013-06-13 Utc Fire & Security Americas Corporation, Inc. Remote monitoring of an emergency system during test of emergency notification devices

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6348871B1 (en) * 1999-09-13 2002-02-19 Maple Chase Adverse condition detection and notification apparatus
US6836210B2 (en) * 2002-11-12 2004-12-28 Maple Chase Company Adverse condition detector having modulated test signal
DE102005049491A1 (de) * 2005-10-13 2007-04-19 Merten Gmbh & Co. Kg Piezoelektrischer Alarmerzeuger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016110680A1 (de) 2016-06-09 2017-12-14 Techem Energy Services Gmbh Schaltungsanordnung und Verfahren zur Ansteuerung und Überprüfung der Funktion eines piezo-elektrischen Schallgebers

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