EP2677507B1 - Dispositif d'alerte de dangers par liaison radio. - Google Patents

Dispositif d'alerte de dangers par liaison radio. Download PDF

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Publication number
EP2677507B1
EP2677507B1 EP12172444.7A EP12172444A EP2677507B1 EP 2677507 B1 EP2677507 B1 EP 2677507B1 EP 12172444 A EP12172444 A EP 12172444A EP 2677507 B1 EP2677507 B1 EP 2677507B1
Authority
EP
European Patent Office
Prior art keywords
antenna
measuring chamber
warning device
hazard warning
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.)
Active
Application number
EP12172444.7A
Other languages
German (de)
English (en)
Other versions
EP2677507A1 (fr
Inventor
Christian Honegger
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 Schweiz AG
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Siemens Schweiz AG
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Filing date
Publication date
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Application filed by Siemens Schweiz AG filed Critical Siemens Schweiz AG
Priority to ES12172444.7T priority Critical patent/ES2666450T3/es
Priority to EP12172444.7A priority patent/EP2677507B1/fr
Publication of EP2677507A1 publication Critical patent/EP2677507A1/fr
Application granted granted Critical
Publication of EP2677507B1 publication Critical patent/EP2677507B1/fr
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Classifications

    • 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
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • 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
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Definitions

  • the present invention relates to a hazard detector comprising a measuring chamber, a first housing member having an outside on which it is mountable on a support, and an inside, and an antenna for radio transmitting a signal to the outside, wherein the measuring chamber on the inside of the housing member is arranged.
  • Hazard detectors are used to indicate a hazard to human health. Such dangers can be caused for example by pollutants from the ambient air. These can be toxic fumes, but also smoke, for example. In the latter case, the danger detector is just designed as a smoke detector.
  • a detected hazard can be signaled acoustically or visually directly by the hazard detector.
  • a danger signal can also be reported by the hazard detector by radio to external receiving stations. In this case, for example, it is a radio-based smoke detector.
  • the danger and especially smoke detectors are usually mounted on walls or ceilings of a room.
  • the material of the wall or the ceiling can influence the radio emission.
  • Known revenge detectors with radio modules and antennas mounted on them can not guarantee reliable radio emission on every mounting surface.
  • EP 1 612 754 A1 is a danger detector, in particular gas or fire detectors, described with a attachable to a wall or ceiling mountable housing.
  • the housing comprises a hazard detector, an electronic circuit arrangement for the evaluation of Signals of the danger detector, a radio module connected to the electronic circuit arrangement with antenna and a radio module.
  • a metallic protective screen covering the opening is designed as an antenna and connected to the antenna output of the radio module.
  • the object of the present invention is thus to ensure an energy-efficient and safe radio emission to mounting locations made of any materials and in particular on metallic mounting surfaces.
  • a danger detector in particular for reporting smoke with a measuring chamber, a first housing element which has an outer side, on which it can be mounted on a support, and an inner side, wherein the outer side and the inner side are arranged perpendicular to a normal and an antenna for radio-transmitting a signal to the outside, wherein the measuring chamber is arranged on the inside of the first housing element, wherein the antenna is mounted in / on the measuring chamber, the first housing element or a second housing element of the danger detector that a part the measuring chamber is located in a direction of the normal between the outside of the first housing member and at least a part of the antenna.
  • the antenna is designed for the preferred radiation of two or more predetermined frequency bands. This has the advantage that the emissions can occur in several frequency bands and thus the reliability of the message can be improved.
  • the antenna serves a part of the measuring chamber or the entire measuring chamber, with which a hazardous substance can be detected or detected, as a spacer for the antenna of the mounting base or the outside of the housing element of the danger detector.
  • the antenna is thus no longer directly on the (first) housing element mounted, with which the danger detector is attached to a support (eg wall or ceiling). Rather, the antenna is spaced from the mounting base or the carrier at least through the entire measuring chamber or a part of the measuring chamber. This makes radio transmission more energy efficient and safer.
  • the antenna is a PIF antenna.
  • a PIF antenna naturally has a ground connection. This allows electrostatic charges to be dissipated without damaging the electronics connected to the antenna.
  • the antenna can be arranged directly or indirectly on the first housing element, wherein there is no metallic element of the danger detector above the antenna.
  • the radiation of radio signals to the outside or top is substantially unhindered, and it can be guaranteed a more reliable signal transmission.
  • the antenna may be formed as an open antenna ring. If the diameter of the ring is adapted to the inner diameter of the housing of the danger detector, the largest possible antenna volume or antenna area can be used.
  • the antenna can be a stamped and bent part. Such an antenna can be produced very cheaply from sheet metal.
  • the antenna can be attached by means of a snap connection to the measuring chamber.
  • the antenna can be pressed by means of the second housing part to the measuring chamber.
  • a second housing part for example, a detector cap serve, which is attached to the floor or basic body (first housing element). By pressing against the measuring chamber, the antenna is fixed, resulting in a constant antenna characteristic.
  • the antenna may have two or more arms. So it can be used in addition to a monopole antenna and other antennas. In particular, different resonance frequencies for the emission can be achieved by the arms.
  • the measuring chamber can be designed as an optical detection space. With such a detection space and, for example, IR LEDs as light sources, smoke particles can be reliably detected.
  • FIG. 1 shows an example of a hazard detector according to the invention a radio-based smoke detector. He owns a main body 1 and a detector cap 2.
  • the main body 1 represents a first housing element and the detector cap 2 is a second housing element. Both housing elements together form the housing of the smoke detector.
  • FIG. 2 shows the main body 1 of FIG. 1 alone, ie the detector cap 2 is removed from the base body 1.
  • the main body 1 is substantially disc-shaped and has an outer side (in FIG. 2 not visible) and an inner side 3 and a normal on both sides normal. Moreover, in the disc-shaped FIG. 3 returns the detector cap 2 in disassembled state.
  • the detector cap 2 has a circumferential gap 5 through which smoke can penetrate into the interior of the housing.
  • the detector cap is formed here approximately spherical segment.
  • the electronics and sensors of the smoke detector is located.
  • the electronics and sensor technology is designed as a modular detector.
  • a plan view of the detector insert 6 is in FIG. 4 shown.
  • the detector insert 6 has a round detector carrier 7, which can be fastened to the base body 1 or in the detector cap 2.
  • the detector carrier 7 carries on its upper side a measuring chamber 8.
  • the measuring chamber 8 is molded in one piece with the detector carrier 7.
  • optoelectronic components may be located in the interior of the measuring chamber (in FIG. 4 not visible).
  • one or more IR LEDs and an IR receiver are in the measuring chamber 8.
  • smoke particles appear in the measuring chamber, they scatter light from the IR LEDs to the IR detector, causing a corresponding message.
  • the smoke particles can penetrate through smoke inlet openings 10 into the measuring chamber.
  • the measuring chamber 8 is formed in the present example as a flat cylinder or cylinder portion. In the installed in the base body 1 state, the top of the measuring chamber 8 of the inside of the base body 1, d. H. of the first housing element, facing away.
  • an antenna 11 In the example of FIG. 4 is located at the outer edge of the top of the cylindrical measuring chamber 8, an antenna 11.
  • the antenna 11 is configured as an open ring and has a gap 12. It is attached with clips 13 on the measuring chamber 8 and snapped.
  • the antenna ring 11 can be realized, for example, as a simple, cost-effective stamped and bent part with the hooks 13. In addition, it may have an internal web 14 for rotational fixation. In addition, 11 electrical antenna terminals 15 are provided here on the outer circumference of the antenna ring.
  • the antenna ring 11 When mounting the detector cap 2, the antenna ring 11 can be pressed against the measuring chamber 8 uniformly along the circumference of the antenna ring. As a result, the antenna ring is firmly clamped and fixed. This results in a fixed, unchanging and thus reliable antenna characteristic.
  • the in FIG. 4 hatched area 16 above the measuring chamber 8, that are used on the inside of the main body 1 opposite top of the measuring chamber for the antenna. In particular, 16 antenna arms can be provided in this area. This area 16 is therefore particularly well suited because there are no metallic or electronic components 9 underneath. There is only the optical detection space for smoke particles to be detected, which can penetrate into the measuring chamber 8 via the smoke inlet openings 10. In contrast, the space above the optoelectronic components 9 should not be provided for antenna arms for reasons of efficiency.
  • the antenna arms of the antenna ring 11 on both sides of the antenna terminals 15 are here dimensioned so that they can preferably use 434 MHz and 868 MHz ISM frequency bands. If appropriate, further antenna arms are provided for other frequency bands or for the purpose of forming a specific antenna characteristic (for example directivity) in or on the measuring chamber 8. By using at least two independent frequency bands, more reliable data transmission is possible.
  • the antenna is designed as a PIF antenna (Planar Inverter F-Shape).
  • PIF antenna Plant Inverter F-Shape
  • Such Antennas are easy to produce by stripline. They have an antenna surface, which is arranged by a ground plane at a defined distance. The geometry and arrangement of the antenna surface with respect to the mass surface and their distance essentially determine the high-frequency characteristics of the antenna.
  • the F-shape results in a sectional view of the antenna.
  • the large leg of the F forms the antenna surface and the two perpendicular thereto small legs are formed by the antenna connection on the one hand and a ground short circuit. Because of this short to ground, the PIF antenna has significant advantages in electrostatic discharges. In fact, these discharges are not dissipated via electronic components, but directly to ground. The electronic components of the hazard alarm thereby receive a special ESD protection.
  • An essential aspect of the present invention is that the antenna can be clearly seen from the outside or inside of the main body 1, d. H. the first housing element, is spaced in the direction of the normal of the outer or inner side. This results in the greatest possible independence from the material or the electromagnetic characteristic of the carrier on which the danger detector is mounted.
  • the attachment of the antenna 11 to the top of the measuring chamber 8 results in a maximum possible distance from a ground plane, which is realized, for example, by a printed circuit board on the underside of the detector insert (cf. FIG. 6 ). Furthermore, the annular configuration of the antenna results in a maximum antenna area up to the outer edge of the cylindrical measuring chamber or up to the inner side of the detector cap 2.
  • the antenna requires no enlargement of the device or change the external design of the danger detector. Continue to be located There are no other metallic components above the antenna, which could adversely affect the emission characteristics.
  • the entire surface of the circuit board is available as a ground plane for the antenna. This large ground area leads to the greatest possible independence of the antenna characteristic of the material of the carrier of the danger detector. Furthermore, the entire surface of the circuit board is available for mounting components or the radio module.
  • the antenna can also be arranged on the outer circumference of the cylindrical measuring chamber 8.
  • the antenna can also be arranged within the measuring chamber.
  • the antenna could be injected directly into the wall of the measuring chamber. This significantly facilitates the installation of the hazard alarm.
  • the detector hood 2 is shown from the inside.
  • the drawing shows an annular insect screen 17 can be taken from a tissue.
  • the insect screen 17 covers the gap 5.
  • the detector hood 2 has on its inner side 2 an inner ring 18 for clamping and fixing the antenna sheet metal ring 11, as has been shown above.
  • the antenna of the danger detector can also be located, for example, in the area of the insect protection 17 in or on the detector cap 2. Also in this case, it is clearly spaced from the carrier on which the hazard detector is mounted.
  • FIG. 6 shows the underside of the detector insert 6. This is the side which faces the inside 3 of the base body 1 in the mounted state.
  • a circuit board 19 with electronic components.
  • the printed circuit board 19 has a large ground plane 20, which can be used for the PIF antenna.
  • the circuit board 19 has the for a PIF antenna required ground terminal 21 for the antenna and an antenna signal output 22.
  • a radio module 23 for dual ISM frequency band transmission on the circuit board 19 is shown.

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)

Claims (9)

  1. Dispositif d'alerte de dangers destiné à signaler de la fumée ou des émanations nocives pour l'humain, comprenant :
    - une chambre de mesure (8),
    - un premier élément de boîtier (1) qui présente un côté extérieur au niveau duquel il peut être monté sur un support et un côté intérieur, le côté extérieur et le côté intérieur étant agencés perpendiculairement à une normale et
    - une antenne (11) pour la radiotransmission d'un signal vers l'extérieur,
    - la chambre de mesure (8) étant agencée sur le côté intérieur du premier élément de boîtiers (1) et
    - l'antenne (11) étant montée de manière telle dans / sur la chambre de mesure (8), le premier élément de boîtier (1) ou un deuxième élément de boîtier (2) du dispositif d'alerte de dangers qu'une partie de la chambre de mesure se trouve dans une direction de la normale entre le côté extérieur du premier élément de boîtier (1) et au moins une partie de l'antenne (11),
    caractérisé en ce que l'antenne (8) est conçue pour émettre préférentiellement deux bandes de fréquences prédéfinies.
  2. Dispositif d'alerte de dangers selon la revendication 1, l'antenne (11) étant une antenne PIFA.
  3. Dispositif d'alerte de dangers selon la revendication 1 ou 2, l'antenne (11) étant agencée directement ou indirectement sur le premier élément de boîtier (1) et aucun élément métallique du dispositif d'alerte de dangers ne se trouvant au-dessus de l'antenne.
  4. Dispositif d'alerte de dangers selon l'une des revendications précédentes, l'antenne (11) étant réalisée en tant qu'anneau antenne ouvert.
  5. Dispositif d'alerte de dangers selon l'une des revendications précédentes, l'antenne (11) étant réalisée en tant que pièce emboutie et pliée.
  6. Dispositif d'alerte de dangers selon l'une des revendications précédentes, l'antenne (11) étant fixée à la chambre de mesure au moyen d'un encliquetage.
  7. Dispositif d'alerte de dangers selon l'une des revendications précédentes, l'antenne (11) étant pressée contre la chambre de mesure au moyen de la deuxième partie de boîtier (2).
  8. Dispositif d'alerte de dangers selon l'une des revendications précédentes, l'antenne (11) présentant deux branches ou plus.
  9. Dispositif d'alerte de dangers selon l'une des revendications précédentes, la chambre de mesure (8) étant réalisée en tant qu'espace de détection optique.
EP12172444.7A 2012-06-18 2012-06-18 Dispositif d'alerte de dangers par liaison radio. Active EP2677507B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES12172444.7T ES2666450T3 (es) 2012-06-18 2012-06-18 Dispositivo de alerta de peligro que utiliza radiocomunicaciones
EP12172444.7A EP2677507B1 (fr) 2012-06-18 2012-06-18 Dispositif d'alerte de dangers par liaison radio.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12172444.7A EP2677507B1 (fr) 2012-06-18 2012-06-18 Dispositif d'alerte de dangers par liaison radio.

Publications (2)

Publication Number Publication Date
EP2677507A1 EP2677507A1 (fr) 2013-12-25
EP2677507B1 true EP2677507B1 (fr) 2018-01-17

Family

ID=46651341

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Application Number Title Priority Date Filing Date
EP12172444.7A Active EP2677507B1 (fr) 2012-06-18 2012-06-18 Dispositif d'alerte de dangers par liaison radio.

Country Status (2)

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EP (1) EP2677507B1 (fr)
ES (1) ES2666450T3 (fr)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29503059U1 (de) 1995-02-23 1995-05-18 Goddard, Peter John, 82205 Gilching Drahtlose Gefahren-Meldeanlage
DE20003592U1 (de) 2000-02-26 2000-05-18 me micro-electric Vertrieb von Communications- und Sicherungsgeräten GmbH, 26135 Oldenburg Rauchmelder
WO2001043098A2 (fr) 1999-12-17 2001-06-14 Brk Brands, Inc. Systeme de detection modulaire
EP1612754A1 (fr) 2004-06-17 2006-01-04 Job Lizenz GmbH & Co. KG Avertisseur de danger
EP1669960A1 (fr) 2004-12-08 2006-06-14 Siemens Schweiz AG Avertisseur avec une antenne de télécommunication
US20080129536A1 (en) 2006-11-03 2008-06-05 Smartsynch, Inc. Forward throw antenna utility meter
US20090051551A1 (en) 2007-08-23 2009-02-26 Honeywell International Inc. Apparatus and method for wireless location sensing
WO2010000336A1 (fr) 2008-07-04 2010-01-07 Siemens Aktiengesellschaft Radiocommunication à double bande utilisant un oscillateur commun
US20100097287A1 (en) 2008-10-22 2010-04-22 Daniel Pakosz Internal utility meter antenna
WO2010111783A1 (fr) 2009-03-31 2010-10-07 Tyco Safety Products Canada Ltd. Antenne en f inversé accordable
WO2010111782A1 (fr) 2009-03-31 2010-10-07 Tyco Safety Products Canada Ltd. Antenne sur carte de circuit imprimé quadribande
WO2011114204A1 (fr) 2010-03-19 2011-09-22 パナソニック電工株式会社 Appareil sans fil, système de notification d'anomalie sans fil utilisant le même et système de commande à distance sans fil
JP2011248546A (ja) 2010-05-25 2011-12-08 Hochiki Corp 火災感知器におけるアンテナの取り付け構造
EP2437226A2 (fr) 2010-10-01 2012-04-04 Matthias Dietsch Système d'alarme de détecteur de fumée et procédé de fonctionnement d'un système d'alarme de détecteur de fumée

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29503059U1 (de) 1995-02-23 1995-05-18 Goddard, Peter John, 82205 Gilching Drahtlose Gefahren-Meldeanlage
WO2001043098A2 (fr) 1999-12-17 2001-06-14 Brk Brands, Inc. Systeme de detection modulaire
DE20003592U1 (de) 2000-02-26 2000-05-18 me micro-electric Vertrieb von Communications- und Sicherungsgeräten GmbH, 26135 Oldenburg Rauchmelder
EP1612754A1 (fr) 2004-06-17 2006-01-04 Job Lizenz GmbH & Co. KG Avertisseur de danger
EP1669960A1 (fr) 2004-12-08 2006-06-14 Siemens Schweiz AG Avertisseur avec une antenne de télécommunication
US20080129536A1 (en) 2006-11-03 2008-06-05 Smartsynch, Inc. Forward throw antenna utility meter
US20090051551A1 (en) 2007-08-23 2009-02-26 Honeywell International Inc. Apparatus and method for wireless location sensing
WO2010000336A1 (fr) 2008-07-04 2010-01-07 Siemens Aktiengesellschaft Radiocommunication à double bande utilisant un oscillateur commun
US20100097287A1 (en) 2008-10-22 2010-04-22 Daniel Pakosz Internal utility meter antenna
WO2010111783A1 (fr) 2009-03-31 2010-10-07 Tyco Safety Products Canada Ltd. Antenne en f inversé accordable
WO2010111782A1 (fr) 2009-03-31 2010-10-07 Tyco Safety Products Canada Ltd. Antenne sur carte de circuit imprimé quadribande
WO2011114204A1 (fr) 2010-03-19 2011-09-22 パナソニック電工株式会社 Appareil sans fil, système de notification d'anomalie sans fil utilisant le même et système de commande à distance sans fil
JP2011248546A (ja) 2010-05-25 2011-12-08 Hochiki Corp 火災感知器におけるアンテナの取り付け構造
EP2437226A2 (fr) 2010-10-01 2012-04-04 Matthias Dietsch Système d'alarme de détecteur de fumée et procédé de fonctionnement d'un système d'alarme de détecteur de fumée

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
"PIF-Antenne", WIKIPEDIA, 30 December 2011 (2011-12-30), XP055525004
JIAN-WU ZHANG ET AL.: "A Novel Dual-frequency Planar Inverted-F Antenna", PIERS PROCEEDINGS, 18 August 2009 (2009-08-18), pages 662 - 665, XP055524964
RASHID AHMAD BHATTI ET AL.: "Design of a Novel Multiband Planar Inverted-F Antenna for Mobile Terminals", PROCEEDINGS OF IWAT2008, 2008, pages 530 - 533, XP031248647
YA-CHUNG YU: "The Miniaturization of Multi-Band Planar Inverted-F Antenna", A THESIS SUBMITTED TO DEPARTMENT OF COMMUNICATION ENGINEERING COLLEGE OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE, June 2008 (2008-06-01), Taiwan, pages 1 - 46, XP055524975

Also Published As

Publication number Publication date
ES2666450T3 (es) 2018-05-04
EP2677507A1 (fr) 2013-12-25

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