EP2678846B1 - Alarm triggering device for a security system - Google Patents

Alarm triggering device for a security system Download PDF

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Publication number
EP2678846B1
EP2678846B1 EP12717338.3A EP12717338A EP2678846B1 EP 2678846 B1 EP2678846 B1 EP 2678846B1 EP 12717338 A EP12717338 A EP 12717338A EP 2678846 B1 EP2678846 B1 EP 2678846B1
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EP
European Patent Office
Prior art keywords
alarm
triggering device
alarm triggering
signal
management device
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EP12717338.3A
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German (de)
French (fr)
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EP2678846A1 (en
EP2678846B2 (en
Inventor
Laurent Pichard
Stéphane DIMARCO
Jacques Lewiner
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Finsecur SAS
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Finsecur SAS
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Priority to PL12717338T priority Critical patent/PL2678846T3/en
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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
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems

Definitions

  • the present invention relates to an alarm triggering device for a security system (fire detection, intrusion detection, detection of malfunctions of technical installations, etc.); and a security system (fire detection, intrusion detection, malfunctions of technical installations, ). It applies in particular to the detection of fire or intrusion in public or private buildings, residential, industrial, commercial or leisure or the detection of malfunctions of technical installations. Thereafter the technical alarms will be designated as the detection of malfunctions of technical installations and, by a predetermined event, a fire, an intrusion or a malfunction of technical installations or the like.
  • a fire detection system includes an electronic monitoring unit and a detection network in communication with the electronic control unit including one or more alarm triggering devices or detection points.
  • alarm-triggering devices or detection points may include automatic fire detectors capable of capturing a phenomenon representative of a fire and manual fire detectors (manual triggers) which are able to be actuated by a person discovering a fire situation.
  • the alarm triggering devices are generally distributed in the zone or zones to be monitored and connected to the central monitoring station.
  • the electronic control unit allows you to monitor the zone or areas to be monitored by means of alarm triggers and to sound an alarm when a fire is detected.
  • the alarm triggering devices are connected to the central monitoring station so as to allow an exchange of information between the central unit and the said alarm triggering devices so that the central unit is informed of the state of each element of the network of alarms. detection, and if necessary to order them.
  • Fire detection systems are known in which the alarm release devices are connected to the control unit by means of a wireless link.
  • the link between each alarm triggering device and the control panel is of good quality to allow the exchange of information.
  • the quality of the link may be degraded because of a loss of electrical power of the alarm triggering device or the presence of obstacles on the radio communication path between said alarm triggering device and the central station, for example. This can lead to a break in communication between the two elements.
  • wireless communication for an alarm triggering device requires high power consumption, which can quickly deplete the power source.
  • a power failure or radio communication can be very dangerous when a fire occurs because the alarm triggering device would not be able to communicate with the central monitoring station to alert it alarm trigger.
  • the alarm trigger device is a manual release
  • the person who actuates said manual release would not be informed that there is a malfunction of the trigger and thus the alarm would not be transmitted to the central fire detection system.
  • Fire detection systems are also known in which the alarm tripping devices belonging to the same detection network are connected to each other by means of the wireless links. This configuration allows the triggering of an alarm at each network alarm triggering device when one of the trigger devices is triggered. See for example WO 2005/013228 or EP 1477951
  • a power supply or radio communication fault can be very dangerous when a fire occurs because the alarm triggering device would not be able to communicate with the other trigger devices to trigger an alarm at the level of the alarm. each alarm triggering device of the network.
  • the present invention aims to remedy all or part of the aforementioned drawbacks.
  • the present invention aims an alarm triggering device for a security system comprising: an interface arranged to connect the alarm triggering device to a management device (also called central or monitoring station) of the security system by means of at least one wireless link; triggering means for triggering an alarm in the event of a predetermined event; power supply means for enabling power supply of the alarm triggering device from a power source; communication control means for detecting the absence of communication with the management device for a predetermined period of time; and signaling means for signaling, at the level of the alarm trigger device, said absence of communication
  • a management device also called central or monitoring station
  • the alarm triggering device comprises means for controlling the operating state of the trigger device and the fault communication means for signaling to the management device information representative of the device. operating state.
  • the alarm trigger device comprises response means able to detect the reception of an interrogation signal from the management device, and in response to the reception of the signal of interrogation to transmit the information representative of the operating state of the trigger device to the management device.
  • the operating state control means are arranged to check the power state of the alarm triggering device.
  • the operating state control means are arranged to check the state of the wireless link with the management device.
  • the operating state control means are arranged to measure a parameter representative of the quality of the reception of a predetermined radio control signal from said management device.
  • the operating state control means are arranged to measure the signal-to-noise ratio or the intensity of the predetermined radio control signal. Intensity will be designated later any parameter representative of the quality of transmission of information by the radio link such as the amplitude of the signal or its modulation in phase or frequency, for example.
  • the alarm triggering device comprises means for detecting a presence of at least one person in the vicinity of the triggering device and in which the signaling means are able to signal an alarm. visible or audible alarm when the presence of a person is detected.
  • the detection means comprise an infrared ray detector in from an infrared emitter associated with or from a person.
  • the triggering means are arranged to allow a user to manually trigger an alarm in the event of a predetermined event such as a fire.
  • the triggering means are arranged to automatically detect a phenomenon representative of a predetermined event, for example a fire.
  • a second aspect of the invention relates to a security system comprising a management device adapted to be connected via a wireless link to at least one alarm trigger device according to the first aspect of the invention and further comprising interrogation means for sending an interrogation signal to said at least one triggering device to obtain information representative of the operating state of the triggering device.
  • a third aspect of the invention relates to a method of monitoring for a security system comprising a management device and at least the alarm triggering device according to the invention able to communicate with the alarm trigger device by means of a wireless link (50), the method comprising a step of controlling the wireless link to detect the absence of communication from the management device to the triggering device for a predetermined period of time; and a signaling step for signaling said lack of communication at the alarm triggering device.
  • the method comprises detecting the reception of an interrogation signal from the management device, and in response to the reception of the interrogation signal, the transmission of a response message to the device. Management.
  • the method comprises detecting the reception of an interrogation signal from the management device, and in response to the reception of the interrogation signal, the transmission of a response message to the device. management and in response to the reception of the response signal by the management device the transmission of a confirmation message to the management device.
  • the method comprises the repetition over time of the sequences of events described above.
  • the method comprises detecting the reception of an interrogation signal from the management device, and in response to the reception of the interrogation signal, the transmission of information representative of the state of the interrogation. operation of the trigger device at the management device.
  • the predetermined duration of time can be chosen according to the time duration between the interrogation signals. For example, if the duration of time between two interrogation signals is of the order of 12 hours, the predetermined duration of time can be chosen greater than 12 hours. If in this case for example the predetermined duration is chosen to be 24 hours the alarm device would be arranged to report an absence of communication when he has not received two successive interrogation signals.
  • the opening frequency of the listening windows of the device for triggering an interrogation signal is chosen as a function of the transmission frequency of the interrogation signal by the management device.
  • the opening instants of the listening windows of the device for triggering an interrogation signal are chosen as a function of the times when the interrogation signal is sent by the management device.
  • the present invention provides an alarm triggering device for a security system comprising: an interface arranged to connect the alarm triggering device to a management device (also called central or central monitoring) of the security system by means of at least one wireless link; a trigger for triggering an alarm in the event of a predetermined event; a power supply module for enabling power supply of the alarm triggering device from a power source; a communication controller for detecting the absence of communication with the management device for a predetermined period of time; and a signaling module for signaling, at the level of the alarm trigger device, said absence of communication
  • a management device also called central or central monitoring
  • a security system 10 is schematically represented on the figure 1 .
  • This security system comprises an electronic monitoring unit 100, connected to several alarm triggering devices 200-1 ... 200n distributed in an area to be monitored by means of the wireless links 50-1 ... 50-n.
  • the alarm tripping devices can be interconnected by means of the wireless links 55-1 ... 55-n.
  • the monitoring station 100 is made with a single box 110 comprising a set of computerized management means 101, control 102 for checking the state of the wireless links 50-1..50-n between the monitoring station 100 and the alarm 200, signaling 103, communication 104 and control 105 triggering devices.
  • the monitoring station 100 further comprises a processor 106 for managing these means and a memory 107 for storing data.
  • the monitoring unit 100 is configured in a manner known per se to detect the occurrence of an alarm of any of the trigger devices 200-1..200-n, signaling the alarm condition by visual means and and / or sound and to control said alarm trigger devices 200-1..200-n.
  • the communication means 104 comprise a wireless interface including a device for receiving and transmitting radio signals, provided with an antenna to enable the monitoring station 100 to communicate with the alarm triggering devices 200-1. .200-n using wireless links 50-1 ... 50-n.
  • the control means 102 is connected to the wireless interface 104 and is configured to send an interrogation signal to the alarm trigger device 200-i to receive information from the alarm trigger device the operating state of said alarm trigger device 200-i.
  • the information representative of the operating state of said alarm trigger device 200-i may include information representative of the state of the wireless link 50-i between the monitoring station 100 and the alarm triggering device. 200-i and / or the state of the power supply battery 200-i alarm trigger device.
  • control means 102 are configured so as to verify, at the central monitoring station 100, the state of the wireless link 50-i between the monitoring station 100 and the control station 100. alarm trigger device 200-i.
  • the control means 102 may be configured to measure the intensity of the radio response signal received from the trigger device 200-i through the 50-i wireless interface and compare the measured intensity with a predetermined intensity threshold.
  • the control means 102 may be configured to alternately or additionally measure the signal-to-noise ratio of the radio signal received from the trigger device 200-i via the wireless interface 50-i and to compare this ratio. measured noise-over-noise with predetermined signal-to-noise threshold
  • FIG. 2B the front face 112 of the box 110 of the monitoring station 100 comprising alarm lights 113 which each represent the alarm status of a corresponding alarm trigger device 200 of the monitoring system, in a manner known per se .
  • the front face 112 further comprises operating indicators 114A, 114B which each indicate the operating state of the corresponding alarm trigger device, a sound transmitter 115, and a display screen 116.
  • the sound transmitter 115 is of known type in alarms, for example, fire and is adapted to emit an audible alarm signal.
  • Each operation indicator 114n may correspond to a different trigger device 200n.
  • the display screen 116 allows the central processor to display visual messages to a user of the fire monitoring station 100 and / or a member of the maintenance service of this device.
  • the display screen 116 is adapted to display an alarm indicator and / or a status indicator of the operation of one or more trigger devices 200.
  • the signaling means 103 are configured to generate signaling different depending on the operating state of the alarm triggering device.
  • the signaling means 103 may be configured to handle the light emission of an operation indicator 114A so that the color of the operation indicator 114A varies depending on the intensity or the signal-to-noise ratio of the signal of operation. control or response received from the trigger device, and to manage the light emission of an operation indicator 114B so that the color of the operation indicator 114B varies depending on the level of energy remaining in the battery of supply of the corresponding alarm triggering device.
  • the brightness of the light of the indicator 114A or 114B may vary depending on the intensity or signal-to-noise ratio of the received control or response signal; or the level of energy remaining in the battery.
  • the signaling means 103 may be configured to manage the frequency of the flashing of the operation indicator 114A or 114B depending on the intensity or the signal-to-noise ratio of the received control or response signal and / or the energy level remaining in the power stack.
  • the operation indicator 114A, 114B may comprise a plurality of transmission elements and the number of the illuminated emission elements may vary depending on the intensity or signal-to-noise ratio of the received control or response signal. and / or the level of energy remaining in the power stack.
  • the signaling means 103 may generate a sound signal whose volume or frequency varies as a function of the intensity or the signal-to-noise ratio of the received control or response signal and / or the energy level. remaining in the power stack.
  • information regarding the operating state of the alarm triggering device may be displayed on the signaling board 116 of the central monitoring station 100.
  • Alarm triggering devices 200-1 ... 200n include automatic triggers having predetermined event detectors and manual triggers.
  • the predetermined automatic event detectors are capable of capturing a representative phenomenon of a predetermined event, for example in the case of a fire of smoke or flames. These detectors can be configured to detect a variation of a physical or chemical quantity, for example and without limitation, a temperature, a presence of smoke particles or a composition of the air and, when this variation meets criteria.
  • predetermined for example amplitude, derivative or second derivative criteria
  • said detector transmits a signal representative of a predetermined event detection to the monitoring station 100 via the wireless links 50-n.
  • the automatic triggers trigger an alarm in response to the detection of the predetermined event representative phenomenon.
  • Manual triggers for their part are able to be operated manually by a person discovering a predetermined event situation, for example a fire.
  • an alarm signal is transmitted to the central monitoring station 100.
  • an alarm signal can also be transmitted to the other alarm triggering devices. 200-1 to 200-n using the wireless links 55-1..55-n to allow other alarm triggers 200-1 to 200-n to trigger an alarm locally.
  • an alarm signal can be signaled at the level of the alarm triggering device.
  • An alarm trigger device 200 for the security system is shown schematically on the figure 3 .
  • the alarm triggering device in this embodiment is a manual trigger 200.
  • This manual trigger includes a wireless interface 210 for connecting the manual trigger 200 to the fire detection system monitoring station 100 by means of the wireless link 50; a mechanical release 220 such as a push button having one or two stable equilibrium positions to allow a user to manually trigger an alarm in the event of a predetermined event, for example a fire; a power supply 230 to power the manual release 200; a communication control processor 240 for detecting an absence of communication from the monitoring station 100 for a predetermined duration; and a signaling device 250 able to signal at the level of the manual release 200 an absence of communication detected by the fault detector 240.
  • the control processor 240 is connected to the wireless interface 210 and to the stack 230. It is configured to detect a lack of wireless communication with the monitoring station 100 and to detect a defect of supply to the manual trigger from the stack 230. For this purpose, the control processor 240 may be configured to wait, for a predetermined period of time, an interrogation signal from the monitoring station 100.
  • the predetermined duration of time can be chosen according to the time duration between two interrogation signals. For example, if the duration of time between two interrogation signals is of the order of 12 hours, the duration of time can be chosen to be greater than 12 hours. If in this case, for example, the predetermined duration is chosen to be of the order of 24 hours, the alarm triggering device can activate its alarm signaling means, in the absence of two consecutive interrogation signals. .
  • the monitoring station 100 transmits an interrogation signal for example every 200 seconds during a transmission window lasting 3 seconds to the triggers and the latter are arranged to activate their means of communication. listen during a listening window of 10 ms every 2 seconds.
  • the central unit In order to limit the consumption of the central unit, it is possible to space the interrogation messages and transmit them for example every 12 hours. In such a configuration, it is possible to wake up the trigger listening system at the scheduled times for sending interrogation messages by the central unit and, in order to guard against an offset of the internal clocks of the trigger and the central unit. , to activate the trigger listening means during listening windows for example 10 ms every 2 seconds for a period of 1 min centered on the planned transmission times of the central.
  • control unit sends a message every 12 hours for example in a time window of more than 3 seconds to the triggers and the latter are arranged to activate their listening means during a listening window of 10 ms all the 2 seconds.
  • control processor 240 following a good reception of the interrogation signal sent by the central to the trigger, activates a response to the control panel. If the control unit receives this response, it returns an acknowledgment message to the trigger.
  • the trigger can either activate its alarm signaling means, or send back to the central station a second message of response to the request and possibly several others in case of non-reception of the request. acknowledgment message from the control panel.
  • the signaling device 250 is implemented in such a way as to signal the defect of the message. communication at the manual trigger 200.
  • a person in the vicinity of the manual trigger 200 will be alerted of the absence of communication between the manual release 200 and the central monitoring station 100.
  • control processor 240 may be configured to measure the intensity and / or the signal-to-noise ratio of a radio signal received from the monitoring station 100 via the wireless interface 50 and comparing it with a threshold intensity and / or predetermined signal-to-noise ratio.
  • control processor 240 may be configured to measure the level of energy remaining in the stack 230 to compare it with a predetermined threshold. Measuring an energy level below the threshold indicates a power failure.
  • the manual release device 200 is equipped with a presence detector 260.
  • the presence detector 260 is configured to transmit a control signal to the signaling device so as not to activate the means. signaling 250 in the presence of at least one person in the vicinity of the manual release 200.
  • Such collaboration between the presence detector and the signaling means 250 avoids the implementation of the signaling means in the absence of a person in his neighborhood, which could consume the little energy remaining in the power cell.
  • the presence detector 260 includes an infrared ray detector for detecting infrared rays from an associated infrared ray emitter. The absence or decrease in the reception of infrared rays from the infrared ray emitter would indicate the presence of one or more persons in the vicinity of the manual release.
  • the presence detector 260 comprises an infrared ray detector for detecting infrared rays from one or more persons in the vicinity of the manual release. The appearance of these infrared rays would indicate the presence of one or more people in the vicinity of the manual release.
  • the presence detector 260 may be integrated in the alarm trigger device 200 or may be a separate device from the alarm trigger device and associated with the alarm trigger device 200.
  • control processor may be configured to send a test signal to the monitoring station 100 and wait for a response signal from the monitoring station 100 to verify the wireless link 50.
  • An absence response or reception of a low intensity response signal may indicate a wireless link fault.
  • the signaling means 250 may be configured to generate different signaling as a function of a malfunction of the alarm trigger device 200.
  • the signaling means 250 may comprise a first indicator light. of warning dedicated to a communication fault with the central monitoring station and a second warning light Warning message dedicated to a power failure.
  • the transmission of a signal visible from the first indicator indicates a communication fault and the emission of a signal visible from the second indicator indicates a power failure.
  • a single indicator can be configured to emit different colors depending on the malfunction or to flash at different frequencies depending on the malfunction.
  • a sound signal may be emitted by the signaling means to warn of a malfunction. Different sounds may be emitted depending on the detected malfunction or the transmission frequency of these sounds may vary depending on the malfunction or these sounds may be transmitted as pulses at fault-dependent repetition frequencies. Operating.
  • the radio link between a trigger and the central can be done using intermediate triggers, which can allow the radio link even if the distance between the trigger actuated and the central is too large to allow a direct connection.

Description

La présente invention est relative à un dispositif de déclenchement d'alarme pour un système de sécurité (détection d'incendie, détection d'intrusion, détection d'anomalies de fonctionnement d'installations techniques,...) ; et à un système de sécurité (détection d'incendie, détection d'intrusion, d'anomalies de fonctionnement d'installations techniques,...). Elle s'applique en particulier à la détection d'incendie ou d'intrusion dans des bâtiments publics ou privés, résidentiels, industriels, commerciaux ou de loisir ou à la détection d'anomalies de fonctionnement d'installations techniques. Par la suite on désignera par alarmes techniques la détection d'anomalies de fonctionnement d'installations techniques et par événement prédéterminé un incendie, une intrusion ou une anomalie de fonctionnement d'installations techniques ou similaires.The present invention relates to an alarm triggering device for a security system (fire detection, intrusion detection, detection of malfunctions of technical installations, etc.); and a security system (fire detection, intrusion detection, malfunctions of technical installations, ...). It applies in particular to the detection of fire or intrusion in public or private buildings, residential, industrial, commercial or leisure or the detection of malfunctions of technical installations. Thereafter the technical alarms will be designated as the detection of malfunctions of technical installations and, by a predetermined event, a fire, an intrusion or a malfunction of technical installations or the like.

Dans le cas de la détection d'incendie, un système de détection d'incendie comprend une centrale électronique de surveillance et un réseau de détection en communication avec la centrale électronique incluant un ou plusieurs dispositifs de déclenchement d'alarme ou points de détection d'incendie. Ces dispositifs de déclenchement d'alarme ou points de détection peuvent comprendre des détecteurs d'incendie automatiques aptes à capter un phénomène représentatif d'un incendie et des détecteurs d'incendie manuels (déclencheurs manuels) qui sont aptes à être actionnés par une personne découvrant une situation d'incendie. Les dispositifs de déclenchement d'alarme sont en général répartis dans la zone ou les zones à surveiller et reliés à la centrale de surveillance. La centrale électronique permet de surveiller la zone ou les zones à surveiller au moyen des dispositifs de déclenchement d'alarme et d'émettre une alarme lorsqu'un incendie est détecté.In the case of fire detection, a fire detection system includes an electronic monitoring unit and a detection network in communication with the electronic control unit including one or more alarm triggering devices or detection points. fire. These alarm-triggering devices or detection points may include automatic fire detectors capable of capturing a phenomenon representative of a fire and manual fire detectors (manual triggers) which are able to be actuated by a person discovering a fire situation. The alarm triggering devices are generally distributed in the zone or zones to be monitored and connected to the central monitoring station. The electronic control unit allows you to monitor the zone or areas to be monitored by means of alarm triggers and to sound an alarm when a fire is detected.

Les dispositifs de déclenchement d'alarme sont reliés à la centrale de surveillance de manière à permettre un échange d'informations entre la centrale et lesdits dispositifs de déclenchement d'alarme afin que la centrale soit informée de l'état de chaque élément du réseau de détection, et le cas échéant de les commander.The alarm triggering devices are connected to the central monitoring station so as to allow an exchange of information between the central unit and the said alarm triggering devices so that the central unit is informed of the state of each element of the network of alarms. detection, and if necessary to order them.

On connaît des systèmes de détection d'incendie dans lesquels les dispositifs de déclenchement d'alarme sont reliés à la centrale au moyen d'une liaison sans fil. Afin de permettre une surveillance fiable et sûre, il est important que la liaison entre chaque dispositif de déclenchement d'alarme et la centrale soit de bonne qualité pour permettre les échanges d'information. Cependant la qualité de la liaison peut être dégradée à cause d'une perte de puissance électrique du dispositif de déclenchement d'alarme ou de la présence d'obstacles sur le chemin de communication radio entre ledit dispositif de déclenchement d'alarme et la centrale, par exemple. Cela peut mener à une rupture de communication entre les deux éléments.Fire detection systems are known in which the alarm release devices are connected to the control unit by means of a wireless link. In order to allow reliable and safe monitoring, it is important that the link between each alarm triggering device and the control panel is of good quality to allow the exchange of information. However, the quality of the link may be degraded because of a loss of electrical power of the alarm triggering device or the presence of obstacles on the radio communication path between said alarm triggering device and the central station, for example. This can lead to a break in communication between the two elements.

De plus, la communication sans fil pour un dispositif de déclenchement d'alarme exige une consommation élevée de courant, ce qui peut rapidement épuiser la source d'alimentation.In addition, wireless communication for an alarm triggering device requires high power consumption, which can quickly deplete the power source.

Un défaut d'alimentation ou de communication radio peut être très dangereux lorsqu'un incendie se produit puisque le dispositif de déclenchement d'alarme ne serait pas capable de communiquer avec la centrale de surveillance pour l'alerter du déclenchement d'alarme. Dans le cas où le dispositif de déclenchement d'alarme est un déclencheur manuel, en cas de défaut tel qu'évoqué ci-dessus, la personne qui actionne ledit déclencheur manuel ne serait pas informée qu'il y a un défaut de fonctionnement du déclencheur et qu'ainsi l'alarme ne serait pas transmise à la centrale du système de détection d'incendie.A power failure or radio communication can be very dangerous when a fire occurs because the alarm triggering device would not be able to communicate with the central monitoring station to alert it alarm trigger. In the case where the alarm trigger device is a manual release, in case of a defect as mentioned above, the person who actuates said manual release would not be informed that there is a malfunction of the trigger and thus the alarm would not be transmitted to the central fire detection system.

On connaît aussi des systèmes de détection d'incendie dans lesquels les dispositifs de déclenchement d'alarme qui appartiennent au même réseau de détection sont reliés autre eux au moyen des liaisons sans fil. Cette configuration permet le déclenchement d'une alarme au niveau de chaque dispositif de déclenchement d'alarme du réseau lorsqu'un des dispositifs de déclenchement est déclenché. Voir par exemple WO 2005/013228 ou EP 1477951 Fire detection systems are also known in which the alarm tripping devices belonging to the same detection network are connected to each other by means of the wireless links. This configuration allows the triggering of an alarm at each network alarm triggering device when one of the trigger devices is triggered. See for example WO 2005/013228 or EP 1477951

Un défaut d'alimentation ou de communication radio peut être très dangereux lorsqu'un incendie se produit puisque le dispositif de déclenchement d'alarme ne serait pas capable de communiquer avec les autres dispositifs de déclenchement pour permettre le déclenchement d'une alarme au niveau de chaque dispositif de déclenchement d'alarme du réseau.A power supply or radio communication fault can be very dangerous when a fire occurs because the alarm triggering device would not be able to communicate with the other trigger devices to trigger an alarm at the level of the alarm. each alarm triggering device of the network.

Les mêmes inconvénients que ceux qui viennent d'être décrits se retrouvent lorsque l'on considère un système de détection d'intrusion ou un système de détection d'anomalies de fonctionnement d'installations techniques.The same disadvantages as those just described are found when considering an intrusion detection system or a malfunction detection system of technical installations.

La présente invention vise à remédier à tout ou partie des inconvénients précités.The present invention aims to remedy all or part of the aforementioned drawbacks.

À cet effet, selon un premier aspect, la présente invention vise un dispositif de déclenchement d'alarme pour un système de sécurité comprenant : une interface agencée pour relier le dispositif de déclenchement d'alarme à un dispositif de gestion (également appelé centrale ou centrale de surveillance) du système de sécurité au moyen d'au moins une liaison sans fil ; des moyens de déclenchement pour déclencher une alarme en cas d'événement prédéterminé ; des moyens d'alimentation pour permettre l'alimentation électrique du dispositif de déclenchement d'alarme à partir d'une source d'alimentation ; des moyens de contrôle de communication pour détecter l'absence de communication avec le dispositif de gestion pendant une durée de temps prédéterminée ; et des moyens de signalisation pour signaler au niveau du dispositif de déclenchement d'alarme ladite absence de communicationFor this purpose, according to a first aspect, the present invention aims an alarm triggering device for a security system comprising: an interface arranged to connect the alarm triggering device to a management device (also called central or monitoring station) of the security system by means of at least one wireless link; triggering means for triggering an alarm in the event of a predetermined event; power supply means for enabling power supply of the alarm triggering device from a power source; communication control means for detecting the absence of communication with the management device for a predetermined period of time; and signaling means for signaling, at the level of the alarm trigger device, said absence of communication

Selon un mode de réalisation de l'invention le dispositif de déclenchement d'alarme comprend des moyens de contrôle de l'état de fonctionnement du dispositif de déclenchement et des moyens de communication de défaut pour signaler au dispositif de gestion des informations représentatives de l'état de fonctionnement.According to one embodiment of the invention, the alarm triggering device comprises means for controlling the operating state of the trigger device and the fault communication means for signaling to the management device information representative of the device. operating state.

Selon un mode de réalisation de l'invention le dispositif de déclenchement d'alarme comprend des moyens de réponse aptes à détecter la réception d'un signal d'interrogation en provenance du dispositif de gestion, et en réponse à la réception du signal d'interrogation de transmettre les informations représentatives de l'état de fonctionnement du dispositif de déclenchement au dispositif de gestion.According to one embodiment of the invention, the alarm trigger device comprises response means able to detect the reception of an interrogation signal from the management device, and in response to the reception of the signal of interrogation to transmit the information representative of the operating state of the trigger device to the management device.

Selon un mode de réalisation de l'invention les moyens de contrôle de l'état de fonctionnement sont agencés pour vérifier l'état d'alimentation du dispositif de déclenchement d'alarme.According to one embodiment of the invention, the operating state control means are arranged to check the power state of the alarm triggering device.

Selon un mode de réalisation de l'invention les moyens de contrôle de l'état de fonctionnement sont agencés pour vérifier l'état de la liaison sans fil avec le dispositif de gestion.According to one embodiment of the invention, the operating state control means are arranged to check the state of the wireless link with the management device.

Selon un mode de réalisation de l'invention les moyens de contrôle de l'état de fonctionnement sont agencés pour mesurer un paramètre représentatif de la qualité de la réception d'un signal radio prédéterminé de contrôle en provenance dudit dispositif de gestion.According to one embodiment of the invention the operating state control means are arranged to measure a parameter representative of the quality of the reception of a predetermined radio control signal from said management device.

Selon un mode de réalisation de l'invention les moyens de contrôle de l'état de fonctionnement sont agencés pour mesurer le rapport signal sur bruit ou l'intensité du signal de contrôle radio prédéterminé. Par intensité on désignera par la suite tout paramètre représentatif de la qualité de transmission d'information par la liaison radio comme l'amplitude du signal ou sa modulation en phase ou en fréquence par exemple.According to one embodiment of the invention, the operating state control means are arranged to measure the signal-to-noise ratio or the intensity of the predetermined radio control signal. Intensity will be designated later any parameter representative of the quality of transmission of information by the radio link such as the amplitude of the signal or its modulation in phase or frequency, for example.

Selon un mode de réalisation de l'invention le dispositif de déclenchement d'alarme comprend des moyens de détection d'une présence d'au moins une personne dans le voisinage du dispositif de déclenchement et dans lequel les moyens de signalisation sont aptes à signaler une alarme visible ou audible lorsque la présence d'une personne est détectée.According to one embodiment of the invention, the alarm triggering device comprises means for detecting a presence of at least one person in the vicinity of the triggering device and in which the signaling means are able to signal an alarm. visible or audible alarm when the presence of a person is detected.

Selon un mode de réalisation de l'invention les moyens de détection comprennent un détecteur des rayons infrarouges en provenance d'un émetteur de rayons infrarouges associé ou en provenance d'une personne.According to one embodiment of the invention, the detection means comprise an infrared ray detector in from an infrared emitter associated with or from a person.

Selon un mode de réalisation de l'invention les moyens de déclenchement sont agencés pour permettre à un utilisateur de déclencher manuellement une alarme en cas d'événement prédéterminé par exemple d'un incendie.According to one embodiment of the invention the triggering means are arranged to allow a user to manually trigger an alarm in the event of a predetermined event such as a fire.

Selon un mode de réalisation de l'invention les moyens de déclenchement sont agencés pour détecter automatiquement un phénomène représentatif d'un événement prédéterminé par exemple un incendie.According to one embodiment of the invention, the triggering means are arranged to automatically detect a phenomenon representative of a predetermined event, for example a fire.

Un deuxième aspect de l'invention vise un système de sécurité comprenant un dispositif de gestion apte à être relié par l'intermédiaire d'une liaison sans fil à au moins un dispositif de déclenchement d'alarme selon le premier aspect de l'invention et comportant en outre des moyens d'interrogation pour envoyer un signal d'interrogation audit au moins un dispositif de déclenchement pour obtenir des informations représentatives de l'état de fonctionnement du dispositif de déclenchement.A second aspect of the invention relates to a security system comprising a management device adapted to be connected via a wireless link to at least one alarm trigger device according to the first aspect of the invention and further comprising interrogation means for sending an interrogation signal to said at least one triggering device to obtain information representative of the operating state of the triggering device.

Un troisième aspect de l'invention vise un procédé de surveillance pour un système de sécurité comprenant un dispositif de gestion et au moins le dispositif de déclenchement d'alarme selon l'invention apte à communiquer avec le dispositif de déclenchement d'alarme au moyen d'une liaison sans fil (50), le procédé comprenant une étape de contrôle de la liaison sans fil pour détecter l'absence de communication en provenance du dispositif de gestion vers le dispositif de déclenchement pendant une durée de temps prédéterminée ; et une étape de signalisation pour signaler au niveau du dispositif de déclenchement d'alarme ladite absence de communication.A third aspect of the invention relates to a method of monitoring for a security system comprising a management device and at least the alarm triggering device according to the invention able to communicate with the alarm trigger device by means of a wireless link (50), the method comprising a step of controlling the wireless link to detect the absence of communication from the management device to the triggering device for a predetermined period of time; and a signaling step for signaling said lack of communication at the alarm triggering device.

Dans un mode de réalisation particulier le procédé comporte la détection de la réception d'un signal d'interrogation en provenance du dispositif de gestion, et en réponse à la réception du signal d'interrogation la transmission d'un message de réponse vers le dispositif de gestion.In a particular embodiment, the method comprises detecting the reception of an interrogation signal from the management device, and in response to the reception of the interrogation signal, the transmission of a response message to the device. Management.

Dans un mode de réalisation particulier le procédé comporte la détection de la réception d'un signal d'interrogation en provenance du dispositif de gestion, et en réponse à la réception du signal d'interrogation la transmission d'un message de réponse vers le dispositif de gestion et en réponse à la réception du signal de réponse par le dispositif de gestion la transmission d'un message de confirmation vers le dispositif de gestion.In a particular embodiment, the method comprises detecting the reception of an interrogation signal from the management device, and in response to the reception of the interrogation signal, the transmission of a response message to the device. management and in response to the reception of the response signal by the management device the transmission of a confirmation message to the management device.

Dans un mode de réalisation particulier le procédé comporte la répétition dans le temps des séquences d'événements décrites ci-dessus.In a particular embodiment, the method comprises the repetition over time of the sequences of events described above.

Dans un mode de réalisation particulier le procédé comporte la détection de la réception d'un signal d'interrogation en provenance du dispositif de gestion, et en réponse à la réception du signal d'interrogation la transmission d'informations représentatives de l'état de fonctionnement du dispositif de déclenchement au dispositif de gestion.In a particular embodiment, the method comprises detecting the reception of an interrogation signal from the management device, and in response to the reception of the interrogation signal, the transmission of information representative of the state of the interrogation. operation of the trigger device at the management device.

La durée de temps prédéterminée peut être choisie en fonction de la durée de temps entre les signaux d'interrogation. Par exemple si la durée de temps entre deux signaux d'interrogation est de l'ordre de 12 heures la durée de temps prédéterminée peut être choisie supérieure à 12 heures. Si dans ce cas par exemple la durée prédéterminée est choisie d'être 24 heures le dispositif d'alarme serait agencé pour signaler une absence de communication lorsque il n'aurait pas reçu deux signaux d'interrogation de successifs.The predetermined duration of time can be chosen according to the time duration between the interrogation signals. For example, if the duration of time between two interrogation signals is of the order of 12 hours, the predetermined duration of time can be chosen greater than 12 hours. If in this case for example the predetermined duration is chosen to be 24 hours the alarm device would be arranged to report an absence of communication when he has not received two successive interrogation signals.

Dans un mode de réalisation particulier la fréquence d'ouverture des fenêtres d'écoute du dispositif de déclenchement d'un signal d'interrogation est choisie en fonction de la fréquence d'émission du signal d'interrogation par le dispositif de gestion.In a particular embodiment, the opening frequency of the listening windows of the device for triggering an interrogation signal is chosen as a function of the transmission frequency of the interrogation signal by the management device.

Dans un mode de réalisation particulier les instants d'ouverture des fenêtres d'écoute du dispositif de déclenchement d'un signal d'interrogation sont choisis en fonction des instants d'émission du signal d'interrogation par le dispositif de gestion.In a particular embodiment, the opening instants of the listening windows of the device for triggering an interrogation signal are chosen as a function of the times when the interrogation signal is sent by the management device.

Selon un autre aspect, la présente invention vise un dispositif de déclenchement d'alarme pour un système de sécurité comprenant : une interface agencée pour relier le dispositif de déclenchement d'alarme à un dispositif de gestion (également appelé centrale ou centrale de surveillance) du système de sécurité au moyen d'au moins une liaison sans fil ; un déclencheur pour déclencher une alarme en cas d'événement prédéterminé ; une module d'alimentation pour permettre l'alimentation électrique du dispositif de déclenchement d'alarme à partir d'une source d'alimentation ; un contrôleur de communication pour détecter l'absence de communication avec le dispositif de gestion pendant une durée de temps prédéterminée ; et un module de signalisation pour signaler au niveau du dispositif de déclenchement d'alarme ladite absence de communicationIn another aspect, the present invention provides an alarm triggering device for a security system comprising: an interface arranged to connect the alarm triggering device to a management device (also called central or central monitoring) of the security system by means of at least one wireless link; a trigger for triggering an alarm in the event of a predetermined event; a power supply module for enabling power supply of the alarm triggering device from a power source; a communication controller for detecting the absence of communication with the management device for a predetermined period of time; and a signaling module for signaling, at the level of the alarm trigger device, said absence of communication

Dans ce qui suit, on va décrire quelques modes de réalisations préférés de l'invention en se référant aux figures ci-annexées d'une manière bien entendu non limitative.

  • La figure 1 représente schématiquement des éléments d'un système de sécurité selon un premier mode de réalisation de l'invention.
  • La figure 2A représente schématiquement une centrale de surveillance selon un premier mode de réalisation de l'invention.
  • La figure 2B représente schématiquement la face avant d'un coffret de centrale de surveillance selon un premier mode de réalisation de l'invention.
  • La figure 3 représente schématiquement un dispositif de déclenchement d'alarme selon un premier mode de réalisation de l'invention.
In the following, we will describe some preferred embodiments of the invention with reference to the accompanying figures in a manner of course not limiting.
  • The figure 1 schematically represents elements of a security system according to a first embodiment of the invention.
  • The Figure 2A schematically represents a central monitoring according to a first embodiment of the invention.
  • The Figure 2B schematically represents the front face of a control panel box according to a first embodiment of the invention.
  • The figure 3 schematically represents an alarm triggering device according to a first embodiment of the invention.

Un système de sécurité 10 selon un premier mode de l'invention est représenté schématiquement sur la figure 1. Ce système de sécurité comprend une centrale électronique de surveillance 100, reliée à plusieurs dispositifs de déclenchement d'alarme 200-1...200n repartis dans une zone à surveiller au moyen des liaisons sans fil 50-1...50-n. Les dispositifs de déclenchement d'alarme peuvent être reliés entre eux au moyen des liaisons sans fil 55-1...55-n.A security system 10 according to a first embodiment of the invention is schematically represented on the figure 1 . This security system comprises an electronic monitoring unit 100, connected to several alarm triggering devices 200-1 ... 200n distributed in an area to be monitored by means of the wireless links 50-1 ... 50-n. The alarm tripping devices can be interconnected by means of the wireless links 55-1 ... 55-n.

Dans le mode de réalisation illustré sur la figure 2A, la centrale de surveillance 100 est réalisée avec un seul coffret 110 regroupant un ensemble de moyens de gestion informatisés 101, de contrôle 102 pour vérifier l'état des liaisons sans fils 50-1..50-n entre la centrale de surveillance 100 et les dispositifs de déclenchement d'alarme 200, de signalisation 103, de communication 104 et de commande 105. La centrale de surveillance 100 comprend en outre un processeur 106 pour gérer ces moyens et une mémoire 107 pour stocker des données. La centrale de surveillance 100 est configurée de manière connue en soi pour détecter l'apparition d'une alarme de l'un quelconque des dispositifs de déclenchement 200-1..200-n, signaler la condition d'alarme par des moyens visuels et/ou sonores et pour commander lesdits dispositifs de déclenchement d'alarme 200-1..200-n. Les moyens de communication 104 comportent une interface sans fil incluant un dispositif de réception et de transmission des signaux radio, muni d'une antenne pour permettre à la centrale de surveillance 100 de communiquer avec les dispositifs de déclenchement d'alarme 200-1...200-n au moyen des liaisons sans fil 50-1...50-n.
Les moyens de contrôle 102 sont raccordés à l'interface sans fil 104 et sont configurés pour envoyer un signal d'interrogation au dispositif de déclenchement d'alarme 200-i afin de recevoir en provenance du dispositif de déclenchement d'alarme des informations représentatives de l'état de fonctionnement dudit dispositif de déclenchement d'alarme 200-i. Les informations représentatives de l'état de fonctionnement dudit dispositif de déclenchement d'alarme 200-i peuvent comprendre les informations représentatives de l'état de la liaison sans fil 50-i entre la centrale de surveillance 100 et le dispositif de déclenchement d'alarme 200-i et/ou de l'état de la pile d'alimentation du dispositif de déclenchement d'alarme 200-i.In the embodiment illustrated on the Figure 2A , the monitoring station 100 is made with a single box 110 comprising a set of computerized management means 101, control 102 for checking the state of the wireless links 50-1..50-n between the monitoring station 100 and the alarm 200, signaling 103, communication 104 and control 105 triggering devices. The monitoring station 100 further comprises a processor 106 for managing these means and a memory 107 for storing data. The monitoring unit 100 is configured in a manner known per se to detect the occurrence of an alarm of any of the trigger devices 200-1..200-n, signaling the alarm condition by visual means and and / or sound and to control said alarm trigger devices 200-1..200-n. The communication means 104 comprise a wireless interface including a device for receiving and transmitting radio signals, provided with an antenna to enable the monitoring station 100 to communicate with the alarm triggering devices 200-1. .200-n using wireless links 50-1 ... 50-n.
The control means 102 is connected to the wireless interface 104 and is configured to send an interrogation signal to the alarm trigger device 200-i to receive information from the alarm trigger device the operating state of said alarm trigger device 200-i. The information representative of the operating state of said alarm trigger device 200-i may include information representative of the state of the wireless link 50-i between the monitoring station 100 and the alarm triggering device. 200-i and / or the state of the power supply battery 200-i alarm trigger device.

Dans un mode de réalisation particulier de l'invention les moyens de contrôle 102 sont configurés de manière à vérifier, au niveau de la centrale de surveillance 100, l'état de la liaison sans fil 50-i entre la centrale de surveillance 100 et le dispositif de déclenchement d'alarme 200-i. À cet effet, les moyens de contrôle 102 peuvent être configurés de sorte à mesurer l'intensité du signal radio de réponse reçu du dispositif de déclenchement 200-i par l'intermédiaire de l'interface sans fil 50-i et de comparer l'intensité mesurée avec un seuil d'intensité prédéterminée. Les moyens de contrôle 102 peuvent être configurés de sorte à mesurer alternativement ou en outre le rapport signal sur bruit du signal radio reçu du dispositif de déclenchement 200-i par l'intermédiaire de l'interface sans fil 50-i et de comparer ce rapport signal sur bruit mesuré avec un seuil de rapport signal sur bruit prédéterminéIn a particular embodiment of the invention, the control means 102 are configured so as to verify, at the central monitoring station 100, the state of the wireless link 50-i between the monitoring station 100 and the control station 100. alarm trigger device 200-i. For this purpose, the control means 102 may be configured to measure the intensity of the radio response signal received from the trigger device 200-i through the 50-i wireless interface and compare the measured intensity with a predetermined intensity threshold. The control means 102 may be configured to alternately or additionally measure the signal-to-noise ratio of the radio signal received from the trigger device 200-i via the wireless interface 50-i and to compare this ratio. measured noise-over-noise with predetermined signal-to-noise threshold

On observe en figure 2B la face avant 112 du coffret 110 de la centrale de surveillance 100 comportant des voyants d'alarme 113 qui représentent chacun l'état d'alarme d'un dispositif de déclenchement d'alarme 200 correspondant du système de surveillance, de manière connue en soi. La face avant 112 comporte en outre des voyants de fonctionnement 114A, 114B qui indiquent chacun l'état du fonctionnement du dispositif de déclenchement d'alarme correspondant, un émetteur sonore 115, et un écran d'affichage 116. L'émetteur sonore 115 est de type connu dans les alarmes, par exemple, d'incendie et est adapté à émettre un signal d'alarme audible. Chaque voyant de fonctionnement 114n peut correspondre à un dispositif de déclenchement 200n différent.We observe Figure 2B the front face 112 of the box 110 of the monitoring station 100 comprising alarm lights 113 which each represent the alarm status of a corresponding alarm trigger device 200 of the monitoring system, in a manner known per se . The front face 112 further comprises operating indicators 114A, 114B which each indicate the operating state of the corresponding alarm trigger device, a sound transmitter 115, and a display screen 116. The sound transmitter 115 is of known type in alarms, for example, fire and is adapted to emit an audible alarm signal. Each operation indicator 114n may correspond to a different trigger device 200n.

L'écran d'affichage 116 permet au processeur central d'afficher des messages visuels à destination d'un utilisateur de la centrale de surveillance d'incendie 100 et/ou d'un membre du service de maintenance de ce dispositif. En particulier, l'écran d'affichage 116 est adapté à afficher un indicateur d'alarme et/ou un indicateur d'état du fonctionnement d'un ou plusieurs dispositifs de déclenchement 200.The display screen 116 allows the central processor to display visual messages to a user of the fire monitoring station 100 and / or a member of the maintenance service of this device. In particular, the display screen 116 is adapted to display an alarm indicator and / or a status indicator of the operation of one or more trigger devices 200.

Dans ce mode de réalisation les moyens de signalisation 103 sont configurés de façon à générer des signalisations différentes en fonction de l'état du fonctionnement du dispositif de déclenchement d'alarme. Par exemple, les moyens de signalisation 103 peuvent être configurés pour gérer l'émission lumineuse d'un voyant de fonctionnement 114A de manière que la couleur du voyant de fonctionnement 114A varie en fonction de l'intensité ou du rapport signal sur bruit du signal de contrôle ou de réponse reçu en provenance du dispositif de déclenchement, et pour gérer l'émission lumineuse d'un voyant de fonctionnement 114B de manière que la couleur du voyant de fonctionnement 114B varie en fonction du niveau d'énergie restant dans la pile d'alimentation du dispositif de déclenchement d'alarme correspondant.In this embodiment, the signaling means 103 are configured to generate signaling different depending on the operating state of the alarm triggering device. For example, the signaling means 103 may be configured to handle the light emission of an operation indicator 114A so that the color of the operation indicator 114A varies depending on the intensity or the signal-to-noise ratio of the signal of operation. control or response received from the trigger device, and to manage the light emission of an operation indicator 114B so that the color of the operation indicator 114B varies depending on the level of energy remaining in the battery of supply of the corresponding alarm triggering device.

Dans des variantes, la luminosité de la lumière du voyant 114A ou 114B peut varier en fonction de l'intensité ou du rapport signal sur bruit du signal de contrôle ou de réponse reçu; ou du niveau d'énergie restant dans la pile d'alimentation. Dans d'autres variantes les moyens de signalisation 103 peuvent être configurés pour gérer la fréquence du clignotement du voyant de fonctionnement 114A ou 114B en fonction de l'intensité ou du rapport signal sur bruit du signal de contrôle ou de réponse reçu et/ou du niveau d'énergie restant dans la pile d'alimentation. Dans un mode de réalisation le voyant de fonctionnement 114A, 114B peut comprendre plusieurs éléments d'émission et le nombre des éléments d'émission illuminés peut varier en fonction de l'intensité ou du rapport signal sur bruit du signal de contrôle ou de réponse reçu et/ou du niveau d'énergie restant dans la pile d'alimentation.In variants, the brightness of the light of the indicator 114A or 114B may vary depending on the intensity or signal-to-noise ratio of the received control or response signal; or the level of energy remaining in the battery. In other variants, the signaling means 103 may be configured to manage the frequency of the flashing of the operation indicator 114A or 114B depending on the intensity or the signal-to-noise ratio of the received control or response signal and / or the energy level remaining in the power stack. In one embodiment the operation indicator 114A, 114B may comprise a plurality of transmission elements and the number of the illuminated emission elements may vary depending on the intensity or signal-to-noise ratio of the received control or response signal. and / or the level of energy remaining in the power stack.

Dans d'autres variantes les moyens de signalisation 103 peuvent générer un signal sonore dont le volume ou la fréquence varie en fonction de l'intensité ou du rapport signal sur bruit du signal de contrôle ou de réponse reçu et/ou du niveau d'énergie restant dans la pile d'alimentation. Dans certains modes de réalisation des informations concernant l'état de fonctionnement du dispositif de déclenchement d'alarme peuvent être affichées sur le tableau de signalisation 116 de la centrale de surveillance 100.In other variants, the signaling means 103 may generate a sound signal whose volume or frequency varies as a function of the intensity or the signal-to-noise ratio of the received control or response signal and / or the energy level. remaining in the power stack. In some embodiments, information regarding the operating state of the alarm triggering device may be displayed on the signaling board 116 of the central monitoring station 100.

Les dispositifs de déclenchement d'alarme 200-1...200n incluent des déclencheurs automatiques comportant des détecteurs d'événement prédéterminé et des déclencheurs manuels. Les détecteurs d'événement prédéterminé automatiques sont aptes à capter un phénomène représentatif d'événement prédéterminé, par exemple dans le cas d'un incendie de la fumée ou des flammes. Ces détecteurs peuvent être configurés pour détecter une variation d'une grandeur physique ou chimique, par exemple et de manière non limitative, une température, une présence de particules de fumée ou une composition de l'air et, lorsque cette variation répond à des critères prédéterminés par exemple des critères d'amplitude, de dérivée ou de dérivée seconde, ledit détecteur transmet un signal représentatif d'une détection d'événement prédéterminé à destination de la centrale de surveillance 100 par l'intermédiaire des liaisons sans fil 50-n. Les déclencheurs automatiques déclenchent une alarme en réponse à la détection du phénomène représentatif d'événement prédéterminé. Les déclencheurs manuels quant à eux sont aptes à être actionnés manuellement par une personne découvrant une situation d'événement prédéterminé, par exemple un incendie. En réponse au déclenchement, un signal d'alarme est transmis à destination de la centrale de surveillance 100. Dans un mode de réalisation particulier de l'invention un signal d'alarme peut être également transmis à destination des autres dispositifs de déclenchement d'alarme 200-1 à 200-n au moyen des liaisons sans fil 55-1..55-n pour permettre aux autres dispositifs de déclenchement d'alarme 200-1 à 200-n de déclencher une alarme localement. Dans certains modes de réalisation de l'invention un signal d'alarme peut être signalé au niveau du dispositif de déclenchement d'alarme.Alarm triggering devices 200-1 ... 200n include automatic triggers having predetermined event detectors and manual triggers. The predetermined automatic event detectors are capable of capturing a representative phenomenon of a predetermined event, for example in the case of a fire of smoke or flames. These detectors can be configured to detect a variation of a physical or chemical quantity, for example and without limitation, a temperature, a presence of smoke particles or a composition of the air and, when this variation meets criteria. predetermined, for example amplitude, derivative or second derivative criteria, said detector transmits a signal representative of a predetermined event detection to the monitoring station 100 via the wireless links 50-n. The automatic triggers trigger an alarm in response to the detection of the predetermined event representative phenomenon. Manual triggers for their part are able to be operated manually by a person discovering a predetermined event situation, for example a fire. In response to the trip, an alarm signal is transmitted to the central monitoring station 100. In a particular embodiment of the invention, an alarm signal can also be transmitted to the other alarm triggering devices. 200-1 to 200-n using the wireless links 55-1..55-n to allow other alarm triggers 200-1 to 200-n to trigger an alarm locally. In some modes of embodiment of the invention an alarm signal can be signaled at the level of the alarm triggering device.

Un dispositif de déclenchement d'alarme 200 pour le système de sécurité, selon un premier mode de réalisation de l'invention, est représenté schématiquement sur la figure 3. Le dispositif de déclenchement d'alarme dans ce mode de réalisation est un déclencheur manuel 200. Ce déclencheur manuel comprend une interface sans fil 210 pour relier le déclencheur manuel 200 à la centrale de surveillance 100 du système de détection d'incendie au moyen de la liaison sans fil 50 ; un déclencheur mécanique 220 tel qu'un bouton poussoir ayant une ou deux positions d'équilibre stables pour permettre à un utilisateur de déclencher manuellement une alarme en cas d'événement prédéterminé, par exemple un incendie ; une pile d'alimentation 230 pour alimenter le déclencheur manuel 200 ; un processeur de contrôle de communication 240 pour détecter un absence de communication en provenance de la centrale de surveillance 100 pendant une durée prédéterminée ; et un dispositif de signalisation 250 apte à signaler au niveau du déclencheur manuel 200 un absence de communication détecté par le détecteur de défaut 240.An alarm trigger device 200 for the security system, according to a first embodiment of the invention, is shown schematically on the figure 3 . The alarm triggering device in this embodiment is a manual trigger 200. This manual trigger includes a wireless interface 210 for connecting the manual trigger 200 to the fire detection system monitoring station 100 by means of the wireless link 50; a mechanical release 220 such as a push button having one or two stable equilibrium positions to allow a user to manually trigger an alarm in the event of a predetermined event, for example a fire; a power supply 230 to power the manual release 200; a communication control processor 240 for detecting an absence of communication from the monitoring station 100 for a predetermined duration; and a signaling device 250 able to signal at the level of the manual release 200 an absence of communication detected by the fault detector 240.

Le processeur de contrôle 240 est raccordé à l'interface sans fil 210 et à la pile 230. Il est configuré de manière à permettre la détection d'une absence de communication sans fil avec la centrale de surveillance 100 et à détecter un défaut d'alimentation au déclencheur manuel à partir de la pile 230. À cet effet, le processeur de contrôle 240 peut être configuré de sorte à attendre, pendant une durée de temps prédéterminée, un signal d'interrogation en provenance de la centrale de surveillance 100.The control processor 240 is connected to the wireless interface 210 and to the stack 230. It is configured to detect a lack of wireless communication with the monitoring station 100 and to detect a defect of supply to the manual trigger from the stack 230. For this purpose, the control processor 240 may be configured to wait, for a predetermined period of time, an interrogation signal from the monitoring station 100.

La durée de temps prédéterminée peut être choisie en fonction de la durée de temps entre deux signaux d'interrogation. Par exemple si la durée de temps entre deux signaux d'interrogation est de l'ordre de 12 heures la durée de temps peut être choisie d'être supérieure à 12 heures. Si dans ce cas par exemple la durée prédéterminée est choisi d'être de l'ordre de 24 heures le dispositif de déclenchement d'alarme peut activer ses moyens de signalisation d'alarme, en cas d'absence de deux signaux d'interrogation consécutifs.The predetermined duration of time can be chosen according to the time duration between two interrogation signals. For example, if the duration of time between two interrogation signals is of the order of 12 hours, the duration of time can be chosen to be greater than 12 hours. If in this case, for example, the predetermined duration is chosen to be of the order of 24 hours, the alarm triggering device can activate its alarm signaling means, in the absence of two consecutive interrogation signals. .

Dans un mode de réalisation, la centrale de surveillance 100 émet un signal d'interrogation par exemple toutes les 200 secondes pendant une fenêtre d'émission d'une durée de 3 secondes vers les déclencheurs et ces derniers sont agencés pour activer leur moyen d'écoute pendant une fenêtre d'écoute de 10 ms toutes les 2 secondes.In one embodiment, the monitoring station 100 transmits an interrogation signal for example every 200 seconds during a transmission window lasting 3 seconds to the triggers and the latter are arranged to activate their means of communication. listen during a listening window of 10 ms every 2 seconds.

De cette manière, il y a toujours des recouvrements entre certaines des fenêtres d'écoute et les fenêtres d'émission.In this way, there are always overlaps between some of the listening windows and the transmission windows.

Afin de limiter la consommation de la centrale, il est possible d'espacer les messages d'interrogation et de les émettre par exemple toutes les 12 heures. Dans une telle configuration, il est possible de réveiller le système d'écoute des déclencheurs aux instants prévus d'émission de messages d'interrogation par la centrale et, afin de se prémunir d'un décalage des horloges interne du déclencheur et de la centrale, d'activer les moyens d'écoute du déclencheur pendant des fenêtres d'écoute par exemple de 10 ms toutes les 2 secondes pendant une durée de 1 mn centrée sur les instants prévus d'émission de la centrale.In order to limit the consumption of the central unit, it is possible to space the interrogation messages and transmit them for example every 12 hours. In such a configuration, it is possible to wake up the trigger listening system at the scheduled times for sending interrogation messages by the central unit and, in order to guard against an offset of the internal clocks of the trigger and the central unit. , to activate the trigger listening means during listening windows for example 10 ms every 2 seconds for a period of 1 min centered on the planned transmission times of the central.

Cela permet d'assurer que le déclencheur sera en position d'écoute lors de l'émission et de vérifier la bonne réception par le déclencheur du message d'interrogation. Cela permet également de resynchroniser l'horloge interne du déclencheur avec celle de la centrale pour éviter une dérive progressive d'une horloge par rapport à l'autre.This ensures that the shutter will be in the listening position when transmitting and check the reception by the trigger of the polling message. This also resynchronizes the internal clock of the trigger with that of the central to avoid a gradual drift of one clock relative to the other.

Dans une autre variante, la centrale émet toutes les 12 heures un message par exemple dans une fenêtre temporelle de plus de 3 secondes vers les déclencheurs et ces derniers sont agencés pour activer leur moyen d'écoute pendant une fenêtre d'écoute de 10 ms toutes les 2 secondes.In another variant, the control unit sends a message every 12 hours for example in a time window of more than 3 seconds to the triggers and the latter are arranged to activate their listening means during a listening window of 10 ms all the 2 seconds.

Bien entendu, pour valider la qualité de la liaison radio entre le déclencheur et la centrale, il est possible par exemple de prévoir que le processeur de contrôle 240, suite à une bonne réception du signal d'interrogation envoyé par la centrale vers le déclencheur, active une réponse vers la centrale. Si la centrale reçoit bien cette réponse, elle renvoie vers le déclencheur un message d'acquittement.Of course, to validate the quality of the radio link between the trigger and the central unit, it is possible for example to provide that the control processor 240, following a good reception of the interrogation signal sent by the central to the trigger, activates a response to the control panel. If the control unit receives this response, it returns an acknowledgment message to the trigger.

En cas d'absence de réception de ce message d'acquittement, le déclencheur peut soit activer ses moyens de signalisation d'alarme, soit renvoyer vers la centrale un second message de réponse à la requête et éventuellement plusieurs autres en cas de non réception du message d'acquittement en provenance de la centrale.If this acknowledgment message is not received, the trigger can either activate its alarm signaling means, or send back to the central station a second message of response to the request and possibly several others in case of non-reception of the request. acknowledgment message from the control panel.

De façon générale, lorsque le processeur de contrôle 240 détecte une absence de réception de message pendant une durée de temps prédéterminée, tel que décrit dans les exemples ci-dessus, le dispositif de signalisation 250 est mis en oeuvre de manière à signaler le défaut de communication au niveau du déclencheur manuel 200. Ainsi, une personne dans les environs du déclencheur manuel 200 sera alertée de l'absence de communication entre le déclencheur manuel 200 et la centrale de surveillance 100.In general, when the control processor 240 detects a lack of message reception for a predetermined period of time, as described in the above examples, the signaling device 250 is implemented in such a way as to signal the defect of the message. communication at the manual trigger 200. Thus, a person in the vicinity of the manual trigger 200 will be alerted of the absence of communication between the manual release 200 and the central monitoring station 100.

Dans un mode de réalisation particulier de l'invention le processeur de contrôle 240 peut être configuré de sorte à mesurer l'intensité et/ou le rapport signal sur bruit d'un signal radio reçu de la centrale de surveillance 100 par l'intermédiaire de l'interface sans fil 50 et de le comparer avec un seuil d'intensité et/ou de rapport signal sur bruit prédéterminé.In a particular embodiment of the invention, the control processor 240 may be configured to measure the intensity and / or the signal-to-noise ratio of a radio signal received from the monitoring station 100 via the wireless interface 50 and comparing it with a threshold intensity and / or predetermined signal-to-noise ratio.

De la même façon, le processeur de contrôle 240 peut être configuré de sorte à mesurer le niveau d'énergie restant dans la pile 230 pour le comparer avec un seuil prédéterminé. La mesure d'un niveau d'énergie en-dessous du seuil indique un défaut de fonctionnement d'alimentation.In the same way, the control processor 240 may be configured to measure the level of energy remaining in the stack 230 to compare it with a predetermined threshold. Measuring an energy level below the threshold indicates a power failure.

Ces mesures permettent au déclencheur manuel 200 d'envoyer des informations concernant son état de fonctionnement vers la centrale de surveillance 100 en réponse au signal d'interrogation envoyé par la centrale de surveillance 100.These measurements enable the manual trip unit 200 to send information concerning its operating status to the central unit 100 in response to the interrogation signal sent by the central monitoring station 100.

Dans un mode de réalisation particulier de l'invention le déclencheur manuel 200 est équipé d'un détecteur de présence 260. Le détecteur de présence 260 est configuré pour émettre un signal de commande vers le dispositif de signalisation de sorte à n'actionner les moyens de signalisation 250 qu'en présence d'au moins une personne au voisinage du déclencheur manuel 200. Une telle collaboration entre le détecteur de présence et les moyens de signalisation 250 permet d'éviter la mise en oeuvre des moyens de signalisation en l'absence d'une personne dans son voisinage, ce qui pourrait consommer le peu d'énergie restant dans la pile d'alimentation.In a particular embodiment of the invention, the manual release device 200 is equipped with a presence detector 260. The presence detector 260 is configured to transmit a control signal to the signaling device so as not to activate the means. signaling 250 in the presence of at least one person in the vicinity of the manual release 200. Such collaboration between the presence detector and the signaling means 250 avoids the implementation of the signaling means in the absence of a person in his neighborhood, which could consume the little energy remaining in the power cell.

Dans ce mode de réalisation, dans une première variante, le détecteur de présence 260 comprend un détecteur de rayons infrarouges pour détecter les rayons infrarouges en provenance d'un émetteur de rayons infrarouges associé. L'absence ou la diminution de réception des rayons infrarouges en provenance de l'émetteur des rayons infrarouges indiquerait la présence d'une ou plusieurs personnes au voisinage du déclencheur manuel. Dans une seconde variante, le détecteur de présence 260 comprend un détecteur de rayons infrarouges pour détecter les rayons infrarouges en provenance d'une ou plusieurs personnes au voisinage du déclencheur manuel. L'apparition de ces rayons infrarouges indiquerait la présence d'une ou plusieurs personnes au voisinage du déclencheur manuel.In this embodiment, in a first variant, the presence detector 260 includes an infrared ray detector for detecting infrared rays from an associated infrared ray emitter. The absence or decrease in the reception of infrared rays from the infrared ray emitter would indicate the presence of one or more persons in the vicinity of the manual release. In a second variant, the presence detector 260 comprises an infrared ray detector for detecting infrared rays from one or more persons in the vicinity of the manual release. The appearance of these infrared rays would indicate the presence of one or more people in the vicinity of the manual release.

Le détecteur de présence 260 peut être intégré dans le dispositif de déclenchement d'alarme 200 ou peut être un dispositif distinct du dispositif de déclenchement d'alarme et associé au dispositif de déclenchement d'alarme 200.The presence detector 260 may be integrated in the alarm trigger device 200 or may be a separate device from the alarm trigger device and associated with the alarm trigger device 200.

Dans un mode de réalisation particulier le processeur de contrôle peut être configuré pour envoyer un signal de test à la centrale de surveillance 100 et attendre un signal de réponse en provenance de la centrale de surveillance 100 afin de vérifier la liaison sans fil 50. Une absence de réponse ou la réception d'un signal de réponse d'une intensité faible peut indiquer un défaut de liaison sans fil.In a particular embodiment the control processor may be configured to send a test signal to the monitoring station 100 and wait for a response signal from the monitoring station 100 to verify the wireless link 50. An absence response or reception of a low intensity response signal may indicate a wireless link fault.

Dans un autre mode de réalisation, les moyens de signalisation 250 peuvent être configurés pour générer des signalisations différentes en fonction d'un défaut de fonctionnement du dispositif de déclenchement d'alarme 200. Par exemple, les moyens de signalisation 250 peuvent comprendre un premier voyant d'avertissement dédié à un défaut de communication avec la centrale de surveillance et un deuxième voyant d'avertissement dédié à un défaut d'alimentation. Ainsi, l'émission d'un signal visible du premier voyant indique un défaut de communication et l'émission d'un signal visible du deuxième voyant indique un défaut d'alimentation. Dans des variantes, un seul voyant peut être configuré pour émettre des couleurs différentes en fonction du défaut de fonctionnement ou pour clignoter à des fréquences différentes en fonction du défaut de fonctionnement. Dans d'autres variantes, un signal sonore peut être émis par les moyens de signalisation pour avertir d'un défaut de fonctionnement. Des sons différents peuvent être émis en fonction du défaut de fonctionnement détecté ou la fréquence d'émission de ces sons peut varier en fonction du défaut de fonctionnement ou encore ces sons peuvent être émis sous forme d'impulsions à des fréquences de répétition dépendantes du défaut de fonctionnement.In another embodiment, the signaling means 250 may be configured to generate different signaling as a function of a malfunction of the alarm trigger device 200. For example, the signaling means 250 may comprise a first indicator light. of warning dedicated to a communication fault with the central monitoring station and a second warning light Warning message dedicated to a power failure. Thus, the transmission of a signal visible from the first indicator indicates a communication fault and the emission of a signal visible from the second indicator indicates a power failure. In variants, a single indicator can be configured to emit different colors depending on the malfunction or to flash at different frequencies depending on the malfunction. In other variants, a sound signal may be emitted by the signaling means to warn of a malfunction. Different sounds may be emitted depending on the detected malfunction or the transmission frequency of these sounds may vary depending on the malfunction or these sounds may be transmitted as pulses at fault-dependent repetition frequencies. Operating.

Comme il va de soi et comme il résulte d'ailleurs déjà de ce qui précède, l'invention ne se limite nullement à ceux des modes d'applications et de réalisations qui ont été plus spécialement envisagés ; elle en embrasse au contraire toutes les variantes sans pour autant sortir du cadre de l'invention tel que défini par les revendications.It goes without saying and as it follows already from the above, the invention is not limited to those modes of applications and achievements that have been more specifically considered; it encompasses all variants without departing from the scope of the invention as defined by the claims.

Par exemple, bien que les modes de réalisations aient été décrits avec un déclencheur manuel, il sera compris que dans d'autres modes de réalisation de l'invention, les détecteurs d'incendie automatiques peuvent être utilisés.For example, although the embodiments have been described with a manual trigger, it will be understood that in other embodiments of the invention, the automatic fire detectors may be used.

Dans une variante et pour éviter la mise en oeuvre du dispositif de signalisation en l'absence d'une personne dans ces environs, ce qui pourrait consommer le peu d'énergie restant dans la pile, c'est dans le cas où la personne voudrait déclencher une alarme d'incendie qu'elle serait informée que le déclencheur ne fonctionne pas et elle pourrait alors déclencher l'alarme par l'intermédiaire d'un autre déclencheur manuel ou autrement.In a variant and to avoid the implementation of the signaling device in the absence of a person in these surroundings, which could consume the little energy remaining in the battery, it is in the case where the person would like trigger a fire alarm that she would informed that the trigger is not working and could then trigger the alarm via another manual trigger or otherwise.

Dans une autre variante de l'invention, la liaison radio entre un déclencheur et la centrale peut se faire en utilisant des déclencheurs intermédiaires, ce qui peut permettre la liaison radio même si la distance entre le déclencheur actionné et la centrale est trop grande pour permettre une liaison directe.In another variant of the invention, the radio link between a trigger and the central can be done using intermediate triggers, which can allow the radio link even if the distance between the trigger actuated and the central is too large to allow a direct connection.

Claims (15)

  1. Alarm triggering device (200) for a security system (10), comprising:
    an interface (210) arranged so as to connect the alarm triggering device (200) to a management device (100) of the security system by means of at least a wireless connection (50);
    triggering means (220) to trigger an alarm in case a predefined event occurs;
    supply means (230) to enable the alarm triggering device to be supplied with electricity from a power supply;
    communications verification means (240) to detect the absence of communications from the management device during a predefined length of time; and
    signaling means (250) to signal said absence of communications at the location of the alarm triggering device.
  2. Alarm triggering device (200) according to claim 1, that further comprises means for checking the working condition (240) of the alarm triggering device (200) and fault communications means so as to signal information representative of the working condition to the management device.
  3. Alarm triggering device according to claim 2, that further comprises response means (240) able to detect the reception of an interrogation signal coming from the management device, and, in response to the reception of the interrogation signal, to transmit information representative of the working condition of the triggering device to the management device.
  4. Alarm triggering device (200) according to one of claims 2 or 3, wherein the working condition verification means (240) are arranged so as to verify the condition of the power supply of the alarm triggering device (200).
  5. Alarm triggering device according to one of claims 2 to 4, wherein the working condition verification means (240) are arranged so as to verify the condition of the wireless connection with the management device (100).
  6. Alarm triggering device (200) according to claim 5, wherein the working condition verification means (240) are arranged so as to measure a parameter representative of the reception quality of a predefined radio verification signal coming from said management device (100).
  7. Alarm triggering device (200) according to claim 6, wherein the working condition verification means (240) are arranged to measure the signal-to-noise ratio or the intensity of the predefined radio verification signal.
  8. Alarm triggering device according to one of claims 1 to 7, that further comprises means of detecting the presence of at least one person (260) in the vicinity of the alarm triggering device (200), wherein the signaling means (250) are able to signal a visible or audible alarm when the presence of a person is detected.
  9. Alarm triggering device according to claim 8, wherein the presence detection means (260) comprise a detector of infrared rays coming from an associated emitter of infrared rays or coming from a person in the vicinity of the triggering device.
  10. Alarm triggering device according to one of claims 1 to 9, wherein the triggering means (220) are arranged to allow a user to trigger an alarm manually in the event of a fire.
  11. Alarm triggering device according to one of claims 1 to 10, wherein the triggering means are arranged to automatically detect a physical phenomenon representative of a fire.
  12. Alarm triggering device according to one of claims 1 to 11, wherein the predefined period of time is chosen according to the period of time between two interrogation signals.
  13. Fire detection system comprising at least one alarm triggering device according to one of claims 1 to 12, and a management device able to be linked via a wireless connection (50) to said at least one alarm triggering device (200) and also comprising interrogation means to send an interrogation signal to said at least one alarm triggering device (200) so as to obtain information representative of the working condition of the alarm triggering device (200).
  14. Monitoring method for a security system (10) comprising a management device (100) and at least one alarm triggering device (200) according to one of claims 1 to 12 able to communicate with the management device (100) by means of a wireless connection (50); the method comprising:
    a step of verifying the wireless connection to detect the absence of communications from the management device (100) to the triggering device (200) during a predefined length of time; and
    a signaling step to signal said absence of communications at the location of the alarm triggering device (200).
  15. Method according to claim 14, that further comprises a step of detecting the reception of an interrogation signal coming from the management device, and, in response to the reception of the interrogation signal, a step of transmitting information representative of the working condition of the triggering device to the management device.
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