EP1316931A1 - Emetteur acoustique pour avertisseur de risque - Google Patents

Emetteur acoustique pour avertisseur de risque Download PDF

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Publication number
EP1316931A1
EP1316931A1 EP01128683A EP01128683A EP1316931A1 EP 1316931 A1 EP1316931 A1 EP 1316931A1 EP 01128683 A EP01128683 A EP 01128683A EP 01128683 A EP01128683 A EP 01128683A EP 1316931 A1 EP1316931 A1 EP 1316931A1
Authority
EP
European Patent Office
Prior art keywords
transmitter according
alarm
alarm transmitter
control pulses
transistor
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
EP01128683A
Other languages
German (de)
English (en)
Other versions
EP1316931B1 (fr
Inventor
Max Grimm
Hansjürg Wälti
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.)
Siemens AG
Original Assignee
Siemens Building Technologies AG
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 Siemens Building Technologies AG filed Critical Siemens Building Technologies AG
Priority to AT01128683T priority Critical patent/ATE295981T1/de
Priority to ES01128683T priority patent/ES2242701T3/es
Priority to EP01128683A priority patent/EP1316931B1/fr
Priority to PT01128683T priority patent/PT1316931E/pt
Priority to DE50106265T priority patent/DE50106265D1/de
Publication of EP1316931A1 publication Critical patent/EP1316931A1/fr
Application granted granted Critical
Publication of EP1316931B1 publication Critical patent/EP1316931B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems, e.g. audible personal calling systems
    • G08B3/10—Audible signalling systems, e.g. audible personal calling systems using electric transmission; using electromagnetic transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0215—Driving circuits for generating pulses, e.g. bursts of oscillations, envelopes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/50—Application to a particular transducer type
    • B06B2201/55—Piezoelectric transducer

Definitions

  • the present invention relates to an acoustic alarm device for a hazard detector, with a piezo sound generator and a circuit driving this, which has at least one Transistor, means for generating control pulses for the at least one transistor, and has an inductance connected to the piezo sounder.
  • Such acoustic alarm devices are usually integrated in the detector or with the detector base connected.
  • a fire alarm with one thermal sensor described, in which the sounder in the detector housing directly is arranged behind the thermal sensor.
  • US-A-4 306 229 there is a stray light smoke detector described, the housing has an opening at the bottom into which a piezoelectric Element is inserted on a vibratable plate.
  • acoustic base such as those sold by Siemens Building Technologies AG AlgoRex series fire detectors (AlgoRex - registered trademark of Siemens Building Technologies AG, formerly Cerberus AG), use a so-called acoustic base, this is a part of approximate dimensions containing the audible alarm of the detector base.
  • This acoustic base is mounted on the ceiling and the detector base the detector is then attached to the acoustic base.
  • acoustic alarm devices Preferred areas of application for acoustic alarm devices are rooms in which it makes sense also to indicate the activation of a detector acoustically, for example hotel rooms, where sleeping guests are woken up and warned by the acoustic alarm can be.
  • fire detectors in private homes which are usually battery operated and are not connected to a control center, are often equipped with an acoustic alarm.
  • the fire detectors are one line to one bus connected, both for communication between the detectors and with the control panel as well as to power the detectors. Because with such a system the economy The fire alarm system depends, among other things, on the maximum number of detectors a line , it is extremely important that the acoustic alarm device have the lowest possible power consumption.
  • the invention is now intended to provide an acoustic alarm which is characterized by is characterized by minimal power consumption and is therefore also used in fire alarm systems can be where the power supply of the detector and the acoustic signal generator done via a bus.
  • this object is achieved in that the inductance and the piezo sound generator are connected in series.
  • the series connection of inductance and piezo sound generator according to the invention leads in opposite directions the known parallel connection to increase the efficiency by a multiple and to reduce electricity consumption to a corresponding fraction.
  • a first preferred embodiment of the alarm transmitter according to the invention is characterized in that that two transistors are provided, each with a sequence of Control pulses is operated.
  • the two sequences of control pulses are preferably constructed identically and against one another shifted by a little more than one pulse width.
  • the mutual shift of the control impulses the two sequences correspond to a pulse length plus a fraction of this.
  • the distance between the pulses is preferably a multiple of their length.
  • a second preferred embodiment of the alarm transmitter according to the invention is thereby characterized in that the means for generating the control pulses by a microprocessor are formed, which has a data communication connection to the hazard detector.
  • a third preferred embodiment of the alarm transmitter according to the invention is characterized in that that the two transistors form a complementary output stage, which one Pre-stage FET transistor for adjusting the level of the microprocessor is connected upstream.
  • an optical alarm indicator having hazard detectors the data communication link on the optical Alarm indicator connected.
  • Another preferred embodiment of the acoustic alarm transmitter according to the invention is characterized in that it is placed in a separate, separate from the hazard detector and preferably arranged to the side of the hazard detector or molded onto it, Housing is arranged.
  • the acoustic alarm transmitter contains a piezo sound transmitter 1, two transistors 2 and 3, a microprocessor 4 for generating control pulses for the Control of transistors 2 and 3, one arranged in series with the piezo sound generator Inductance 5 and an EMC filter 6.
  • the microprocessor 4 is connected to a supply voltage of, for example 3 V connected, which is supplied by the system bus of the relevant detector line becomes.
  • the two transistors 2 and 3, of which transistor 2 is also an FET transistor can be designed as a complementary power amplifier.
  • This complementary power amplifier is a Pre-stage FET transistor 7 upstream to adjust the level of the microprocessor 4.
  • a diode 8 serves as an induction block for the inductance 5.
  • the pre-stage FET transistor 7 downstream resistor 9 serves as a voltage divider for current limitation.
  • a data communication connection designated by reference numeral 10 is provided between the microprocessor 4 and the assigned danger detector, via which the microprocessor 4 is supplied with corresponding data when the danger detector is activated. Since it is known that practically all hazard detectors, whether fire, motion or gas detectors, have a so-called optical alarm indicator (see, for example, EP-A-0 872 817), it makes sense to connect the data communication link 10 to the alarm indicator or its control. So if the alarm indicator is activated by the signal processing of the detector for the visual display of an alarm state, the microprocessor 4 also receives corresponding information via the data communication link 10, generates control pulses I 1 and I 2 and sends this via lines 11 and 11 connected to the processor 12 to the complementary output stage with transistors 2 and 3.
  • the pulses I 1 and I 2 shown on an enlarged scale in FIG. 2 have, for example, a frequency of 1 kHz and accordingly a wavelength of 1000 microseconds and a length (duration) A between 20 and 240 microseconds, with the volume of the pulse length A being Piezo sounder 1 is adjustable.
  • the distance B between successive pulses is a multiple of the pulse length A; in the illustrated embodiment, B is between 760 and 980 microseconds.
  • the pulses I 1 and I 2 each form a pulse train, the two pulse trains having a phase shift of slightly more than a pulse length B.
  • the pulses I 2 are delayed compared to the pulses I 1 , the delay being the pulse length A plus a fraction C of the pulse length A.
  • the fraction C is 10 ⁇ s.
  • the mutual displacement of the two pulse trains causes a significant reduction in the Power consumption.
  • a supply voltage of the microprocessor 4 of, for example, 3 V. is the voltage at the output of the EMC filter 6 depending on the volume between 10 and 30 V and the volume that can be achieved with the piezo sounder is over 90 decibels.
  • the pulses I 1 make the transistor 7 conductive; a current flows and the piezo sound generator 1 charges via the transistor 2, whereby a sound is generated.
  • the pulses I 2 reaching the transistor 3 cause the piezoelectric sound generator 1 to discharge, which likewise produces a sound.
  • the complementary output stage with the two transistors 2 and 3 and their interaction with the inductor 5 connected in series with the piezo sounder 1 and the tones thereby generated when charging and discharging the piezo sounder 1 are primarily responsible for the fact that with a low supply voltage of the microprocessor 4, a loud and clearly audible acoustic warning signal can be generated.
  • a volume of 90 decibels is sufficient in all cases to the users / residents to reliably alarm these rooms.
  • the acoustic alarm is activated preferably in a separate housing and separated from the assigned hazard detector installed, which is attached to the side of the detector housing, for example.
  • Another The acoustic alarm devices can be used in corridors, stairwells, Entrance halls and the like, where there may be a greater distance between the Alarm generator and the associated hazard detector can exist. In these cases, further increase the maximum volume the circuit with a transistor bridge circuit be expanded.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
  • Emergency Alarm Devices (AREA)
  • Fire Alarms (AREA)
EP01128683A 2001-12-01 2001-12-01 Emetteur acoustique pour avertisseur de risque Expired - Lifetime EP1316931B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT01128683T ATE295981T1 (de) 2001-12-01 2001-12-01 Akustischer alarmgeber für einen gefahrenmelder
ES01128683T ES2242701T3 (es) 2001-12-01 2001-12-01 Transmisor de alarma acustico para un avisador de peligro.
EP01128683A EP1316931B1 (fr) 2001-12-01 2001-12-01 Emetteur acoustique pour avertisseur de risque
PT01128683T PT1316931E (pt) 2001-12-01 2001-12-01 Dispositivo de alarme acustico para um sinalizador de emergencia
DE50106265T DE50106265D1 (de) 2001-12-01 2001-12-01 Akustischer Alarmgeber für einen Gefahrenmelder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01128683A EP1316931B1 (fr) 2001-12-01 2001-12-01 Emetteur acoustique pour avertisseur de risque

Publications (2)

Publication Number Publication Date
EP1316931A1 true EP1316931A1 (fr) 2003-06-04
EP1316931B1 EP1316931B1 (fr) 2005-05-18

Family

ID=8179428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01128683A Expired - Lifetime EP1316931B1 (fr) 2001-12-01 2001-12-01 Emetteur acoustique pour avertisseur de risque

Country Status (5)

Country Link
EP (1) EP1316931B1 (fr)
AT (1) ATE295981T1 (fr)
DE (1) DE50106265D1 (fr)
ES (1) ES2242701T3 (fr)
PT (1) PT1316931E (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006058608A1 (fr) * 2004-12-01 2006-06-08 Asulab S.A. Procédé de generation d’un son polyphonique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1746552A1 (fr) 2005-07-19 2007-01-24 Siemens Schweiz AG Communication bidirectionnelle entre une unité acoustique de détection de danger et au moins une autre unité

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663624A (en) * 1984-04-25 1987-05-05 Asulab, S.A. Pager having receiving frame tuned by transducer
US4954960A (en) * 1986-11-07 1990-09-04 Alcon Laboratories Linear power control for ultrasonic probe with tuned reactance
US5493272A (en) * 1990-12-07 1996-02-20 G. P. B. Beghelli S.R.L. Emergency lighting system with alarm for fire, gas and ambient air pollution with automatic monitoring and battery recharging
US6166624A (en) * 1995-04-05 2000-12-26 Societe De Composants Electriques Piezoelectric horn, particularly for vehicles
EP1063623A1 (fr) * 1998-11-24 2000-12-27 Kojin Co., Ltd. Dispositif de suivi d'articles a sonnerie propre

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663624A (en) * 1984-04-25 1987-05-05 Asulab, S.A. Pager having receiving frame tuned by transducer
US4954960A (en) * 1986-11-07 1990-09-04 Alcon Laboratories Linear power control for ultrasonic probe with tuned reactance
US5493272A (en) * 1990-12-07 1996-02-20 G. P. B. Beghelli S.R.L. Emergency lighting system with alarm for fire, gas and ambient air pollution with automatic monitoring and battery recharging
US6166624A (en) * 1995-04-05 2000-12-26 Societe De Composants Electriques Piezoelectric horn, particularly for vehicles
EP1063623A1 (fr) * 1998-11-24 2000-12-27 Kojin Co., Ltd. Dispositif de suivi d'articles a sonnerie propre

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006058608A1 (fr) * 2004-12-01 2006-06-08 Asulab S.A. Procédé de generation d’un son polyphonique
CN101065194B (zh) * 2004-12-01 2011-04-06 阿苏拉布股份有限公司 复调声音产生方法

Also Published As

Publication number Publication date
DE50106265D1 (de) 2005-06-23
ATE295981T1 (de) 2005-06-15
EP1316931B1 (fr) 2005-05-18
ES2242701T3 (es) 2005-11-16
PT1316931E (pt) 2005-09-30

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