EP3477611A1 - Detection and alert device for alarm system and alarm system comprising same - Google Patents

Detection and alert device for alarm system and alarm system comprising same Download PDF

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Publication number
EP3477611A1
EP3477611A1 EP18202689.8A EP18202689A EP3477611A1 EP 3477611 A1 EP3477611 A1 EP 3477611A1 EP 18202689 A EP18202689 A EP 18202689A EP 3477611 A1 EP3477611 A1 EP 3477611A1
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EP
European Patent Office
Prior art keywords
detection
radio
intrusion
interference
ism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18202689.8A
Other languages
German (de)
French (fr)
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EP3477611B1 (en
Inventor
Eric Martin
Didier Filhol
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Telecom Design SA
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Telecom Design SA
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Publication of EP3477611A1 publication Critical patent/EP3477611A1/en
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Publication of EP3477611B1 publication Critical patent/EP3477611B1/en
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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/20—Countermeasures against jamming
    • H04K3/22—Countermeasures against jamming including jamming detection and monitoring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/20—Countermeasures against jamming
    • H04K3/22—Countermeasures against jamming including jamming detection and monitoring
    • H04K3/224—Countermeasures against jamming including jamming detection and monitoring with countermeasures at transmission and/or reception of the jammed signal, e.g. stopping operation of transmitter or receiver, nulling or enhancing transmitted power in direction of or at frequency of jammer
    • H04K3/226—Selection of non-jammed channel for communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/80—Jamming or countermeasure characterized by its function
    • H04K3/88—Jamming or countermeasure characterized by its function related to allowing or preventing alarm transmission
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1609—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems
    • G08B13/1618—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B15/00—Identifying, scaring or incapacitating burglars, thieves or intruders, e.g. by explosives
    • G08B15/02—Identifying, scaring or incapacitating burglars, thieves or intruders, e.g. by explosives with smoke, gas, or coloured or odorous powder or liquid
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/10—Jamming or countermeasure used for a particular application
    • H04K2203/16—Jamming or countermeasure used for a particular application for telephony
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/10—Jamming or countermeasure used for a particular application
    • H04K2203/18—Jamming or countermeasure used for a particular application for wireless local area networks or WLAN

Definitions

  • the present invention relates to alarm systems protecting premises and provides a detection and alerting device to enhance security.
  • Much of the effectiveness of an alarm system lies in its ability to quickly evade an intruder who has broken into premises such as offices, industrial or commercial premises or secure habitats so as not to leave him alone. the time to commit a theft or damage.
  • alarm systems are increasingly systems where the various sensors and the alarm center that manages and is responsible for transmitting alarms to a center Remote monitoring communicates by radio, which introduces a significant security breach.
  • radio jammers capable of rendering this type of alarm system ineffective by cutting not only the communications between the sensors and the alarm system's alarm center on the ISM frequency bands, which are dedicated to short-range transmissions for industrial, scientific, medical, household or similar applications as defined for example in Europe in Table 1 of EN 55011 but also by cutting the GSM link to the central station by saturating the GSM receiver with the central alarm.
  • the present invention aims at providing a device adapted firstly to maintain communication with a remote monitoring center and to allow immediate activation of the deterrence device or devices in the event of detection of radio interference and intrusion.
  • the interference detection radio component is the radio receiving component ISM of the radio module.
  • the radio module comprises an ISM receiving radio component distinct from the interference detection radio component.
  • the intrusion detection device comprises a motion detector.
  • the motion detector may include at least one of an infrared sensor, an ultrasonic sensor or a camera.
  • the intrusion detection device comprises an opening sensor.
  • the detection device may comprise a connection with a deterrent device in order to activate the latter in the event of intrusion detection with radio interference.
  • the detection device can be integrated in a deterrent device and include means for activating the deterrent device in the event of intrusion detection with radio interference.
  • the deterrent device may include at least one of a siren, a smoke generator, a voice message broadcast device.
  • the LPWAN network is connected to a central monitoring station.
  • the invention further relates to an alarm system comprising at least one detection device of the invention connected by the ISM means to a local alarm center.
  • the detection and warning device being connected with a deterrent device, the method preferably comprises a step of starting the deterrent device directly by the detection device on detection by the detection device of an intrusion and of jamming.
  • the detection of a radio interference includes a delay adapted to filter interference interference.
  • the detection device of the present invention has the main object of bearing the security breach related to the loss of communication of an alarm center with its sensors and with a central station during a radio jamming.
  • the actions that can be performed by the device of the invention in such a case are to instantly start the deterrent system and send an alert to the central station if, when armed, it detects a radio interference with or without intrusion .
  • the example of Figure 1B differs from that of the Figure 1A in that the radio module 6, which comprises a reception component 62 and a transmission component 61, performs the transmission / reception functions ISM, the interference monitoring function by scanning its reception part in addition to the transmission periods / receiving ISM frames.
  • the radio module 6 which comprises a reception component 62 and a transmission component 61, performs the transmission / reception functions ISM, the interference monitoring function by scanning its reception part in addition to the transmission periods / receiving ISM frames.
  • the radio module 4 of the Figure 1A or 6 of the Figure 1B is adapted to transmit a radio low bit rate frame to an LPWAN network.
  • the transmission is in one-way mode by a generally low-speed radio transmission.
  • a low-speed network suitable for the invention is the ultra-narrow band modulation ultra-narrow band network developed by the SIGFOX company which operates in the ISM band and which makes it possible to transmit messages with a bit rate of the order of 100 bits per second over long distances with great robustness against noise and in particular jamming.
  • Another example is the network using a protocol and a support according to the LoRa standard which is also adapted to the present application.
  • the device can also be programmed to use the networks known as Nwave, Ingenu or Weightless.
  • the LPWAN low-speed network transmission is done in case of detection of radio interference with or without intrusion. It should be noted that interference devices that can be used against alarm systems affect the receivers of these systems by saturating them.
  • the interference therefore affects the control panel but not the device of the invention in its LPWAN operating mode where it has only one transmitter function.
  • the receiver remote network is not affected by the jammer used to disrupt the control panel and possibly GSM phones. Indeed, jammers used to disrupt alarm systems have an action zone of a few meters, see a few dozen meters. As a result, the reception of the information transmitted by the device of the invention is still possible by the remote receivers of the LPWAN networks.
  • the figure 2 represents a traditional alarm system architecture to which is added the device of the invention.
  • the alarm system comprises sensors 11A, 11B, 11C, 11D, a central unit 15, a deterrent device 12, a siren, a smoke generator or a voice message diffuser, for example, and the device of the invention 10.
  • the various sensors, deterrent device and device of the invention dialog bidirectionally with the central according to a traditional established protocol.
  • the unit 15 is for its part regularly bidirectional link by the GSM network with a monitoring center 100 as known in the field.
  • the figure 3 represents the same system whose elements are disturbed by an interfering device 60 which disturbs the receivers of the components 10, 11, 12, 15 of the alarm system and thus breaks the bidirectional links between the sensors, the deterrent device and between the central and the monitoring center 100.
  • the device 10 of the invention is still able to send one or more unidirectional frames to the antennas 70 of the LPWAN network which retransmits the information to the monitoring center 100.
  • the device 10 can either be provided as a stand-alone product and in this case it is packaged in a small box, powered by battery or possibly battery and solar collector and having an interface for driving an external device, siren, smoke generator voice message generator, or it is directly integrated into the deterrent device.
  • the operation of the device is as follows. If the device, while armed, detects a radio interference it sends on the LPWAN network a radio jamming alarm to the monitoring center of the monitoring company and / or the owner of the installation or any other person in charge of the monitoring of the premises and, if it detects more an intrusion it will trigger the deterrent device that it controls (Siren, smoke generator, vocal dissuader, ...)
  • the device software triggers a step of starting the device deterrence directly by the detection and alarm device of the invention.
  • the monitoring center will apply the instructions (call from the owner or the person in charge of the site, call from the police force, etc.) and the deterrent device will run its cycle, siren for a specified time, or broadcast. smoke or voice messages.
  • the detection of interference is carried out for example by means of a delayed loop comprising a succession of jamming presence confirmation detections to eliminate false detections such as interference due to electric motor starts, failure to interference suppression of two wheels or other incidental interference.
  • the device of the invention which must be distinct from the local alarm center whose destruction is in general the priority target of burglars using jammers, can be hidden so as not to be spotted and continue to transmit in the event that the plant is destroyed.
  • the device of the invention may for example be arranged to monitor access to the plant.
  • the received signals BF are converted by an analog / digital converter 301 processing means 3 to be processed according to the operating mode of the device.
  • the signals BF emitted come from a digital-to-analog converter 302 of the processing means 3.
  • control of the switches is made by the processing means according to the program phase performed.
  • the processing means scan the output of the converter 303 to detect prolonged saturation of the output of the receiver.
  • the module of the figure 4 can be dedicated to transmissions / receptions, a simple annex receiver module for the detection of interference.
  • the detection and warning device of the invention can be integrated into an equipment of the alarm system other than the central unit such as a device deterrence.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

L'invention concerne un dispositif (10) de détection et d'alerte pour système d'alarme comportant: - au moins un dispositif de détection d'intrusion (1), - un composant radio (2, 42) de détection de brouillage sur les bandes ISM et GSM, - des moyens de traitement, moyens de calcul et moyens de mémorisation (3), configurés pour réaliser un traitement du signal fourni par le détecteur de détection d'intrusion et du composant radio de détection de brouillage afin de détecter une intrusion et/ou un brouillage radio, - un module radio (4, 6) comportant un composant radio d'émission (41, 61) ISM et LPWAN et configuré pour transmettre un signal d'alerte soit vers une centrale d'alarme locale en bande ISM sur détection d'intrusion sans brouillage radio, soit vers un réseau LPWAN en mode monodirectionnel en cas de détection de brouillage radio avec ou sans détection d'intrusion et un composant radio de réception (42, 62) ISM; - des moyens d'alimentation électrique.The invention relates to a device (10) for detecting and alerting an alarm system comprising: at least one intrusion detection device (1), an interference detection radio component (2, 42) on the ISM and GSM bands, processing means, calculating means and storage means (3) configured to perform signal processing provided by the intrusion detection detector and the scrambling detection radio component to detect an intrusion and / or radio jamming, a radio module (4, 6) comprising a transmission radio component (41, 61) ISM and LPWAN and configured to transmit an alert signal to either an ISM band local alarm control panel on intrusion detection without radio interference, either to a LPWAN network in one-way mode in case of radio interference detection with or without intrusion detection and a receiving radio component (42, 62) ISM; - Power supply means.

Description

Domaine de l'inventionField of the invention

La présente invention se rapporte aux systèmes d'alarme protégeant des locaux et propose un dispositif de détection et d'alerte destiné à en renforcer la sécurité.The present invention relates to alarm systems protecting premises and provides a detection and alerting device to enhance security.

Arrière plan technologiqueTechnological background

Une grande partie de l'efficacité d'un système d'alarme réside dans sa capacité à faire fuir rapidement un intrus qui aurait pénétré par effraction dans des locaux tels que bureaux, locaux industriels ou commerciaux ou encore habitats sécurisés afin de ne pas lui laisser le temps de commettre un vol ou des dégradations.Much of the effectiveness of an alarm system lies in its ability to quickly evade an intruder who has broken into premises such as offices, industrial or commercial premises or secure habitats so as not to leave him alone. the time to commit a theft or damage.

Pour des raisons de cout et de facilité d'installation les systèmes d'alarme sont de plus en plus des systèmes où les différents capteurs et la centrale d'alarme qui en effectue la gestion et qui est en charge de transmettre les alarmes à un centre de surveillance distant communiquent par radio, ce qui introduit une faille de sécurité importante.For reasons of cost and ease of installation alarm systems are increasingly systems where the various sensors and the alarm center that manages and is responsible for transmitting alarms to a center Remote monitoring communicates by radio, which introduces a significant security breach.

En effet il existe des brouilleurs radios capables de rendre inopérants ce type de systèmes d'alarmes en coupant non seulement les communications entre les capteurs et la centrale d'alarme du système d'alarme sur les bandes de fréquences ISM, qui sont dédiées à des transmissions à courte portée pour des applications industrielles, scientifiques, médicales, domestiques ou similaires telles que définies par exemple en Europe au tableau 1 de l'EN 55011 mais aussi en coupant la liaison GSM vers le centre de télésurveillance en saturant le récepteur GSM de la centrale d'alarme.Indeed, there are radio jammers capable of rendering this type of alarm system ineffective by cutting not only the communications between the sensors and the alarm system's alarm center on the ISM frequency bands, which are dedicated to short-range transmissions for industrial, scientific, medical, household or similar applications as defined for example in Europe in Table 1 of EN 55011 but also by cutting the GSM link to the central station by saturating the GSM receiver with the central alarm.

Les systèmes de dissuasion courants tels que sirène, dispositif de diffusion de messages vocaux, générateur de fumée ou autres étant reliés et mis en marche par la centrale d'alarme qui communiquent avec cette dernière par radio deviennent eux aussi inopérants, le brouillage radio entrainant dans le meilleur des cas un message sur la console du télé-surveillant indiquant une perte de connexion avec la centrale d'alarme mais souvent au bout de plusieurs heures et sans autre indication sur l'origine du problème.Common deterrent systems such as sirens, voicemail devices, smoke generators and the like are connected and turned on by the central alarm unit, which communicate with the latter by radio, which also become inoperative, the radio jamming resulting in the best of times a message on the remote supervisor's console indicating a loss of connection with the alarm center but often after several hours and without further indication of the origin of the problem.

Brève description de l'inventionBrief description of the invention

Au vu de cette situation, la présente invention vise à proposer un dispositif adapté en premier lieu à conserver une communication avec un centre de télésurveillance distant et à permettre la mise en marche immédiate du ou des dispositifs de dissuasion en cas de détection de brouillage radio et d'intrusion.In view of this situation, the present invention aims at providing a device adapted firstly to maintain communication with a remote monitoring center and to allow immediate activation of the deterrence device or devices in the event of detection of radio interference and intrusion.

Pour ce faire la présente invention propose principalement un dispositif de détection et d'alerte pour système d'alarme qui comporte:

  • au moins un dispositif de détection d'intrusion,
  • un composant radio de détection de brouillage sur les bandes ISM et GSM,
  • des moyens de traitement, moyens de calcul et moyens de mémorisation, configurés pour réaliser un traitement du signal fourni par le détecteur de détection d'intrusion et du premier module radio afin de détecter une intrusion et/ou un brouillage radio,
  • un module radio comportant un composant radio d'émission ISM et LPWAN et configuré pour transmettre un signal d'alerte soit vers une centrale d'alarme locale en bande ISM sur détection d'intrusion sans brouillage radio, soit vers un réseau LPWAN en mode monodirectionnel en cas de détection de brouillage radio avec ou sans détection d'intrusion et un composant radio de réception ISM;
  • des moyens d'alimentation électrique.
To do this, the present invention mainly proposes a detection and alarm device for an alarm system that comprises:
  • at least one intrusion detection device,
  • an interference detection radio component on the ISM and GSM bands,
  • processing means, calculating means and storage means, configured to perform a signal processing provided by the intrusion detection detector and the first radio module to detect an intrusion and / or radio interference,
  • a radio module comprising an ISM and LPWAN transmission radio component and configured to transmit an alert signal either to an ISM band local alarm control panel on intrusion detection without radio interference, or to a LPWAN network in one-way mode in the event of detection of radio interference with or without intrusion detection and an ISM receiving radio component;
  • power supply means.

Selon un premier mode de réalisation, le composant radio de détection de brouillage est le composant radio de réception ISM du module radio.According to a first embodiment, the interference detection radio component is the radio receiving component ISM of the radio module.

Selon un mode de réalisation alternatif, le module radio comporte un composant radio de réception ISM distinct du composant radio de détection de brouillage.According to an alternative embodiment, the radio module comprises an ISM receiving radio component distinct from the interference detection radio component.

Selon un mode de réalisation particulier, le dispositif de détection d'intrusion comporte un détecteur de mouvements.According to a particular embodiment, the intrusion detection device comprises a motion detector.

Le détecteur de mouvements peut notamment comporter au moins l'un parmi un capteur infrarouge, un capteur ultra son ou une caméra.The motion detector may include at least one of an infrared sensor, an ultrasonic sensor or a camera.

Selon un mode de réalisation alternatif ou complémentaire, le dispositif de détection d'intrusion comporte un capteur d'ouvrant.According to an alternative or complementary embodiment, the intrusion detection device comprises an opening sensor.

Avantageusement, le dispositif de détection peut comporter une liaison avec un dispositif de dissuasion afin d'activer ce dernier en cas de détection d'intrusion avec brouillage radio.Advantageously, the detection device may comprise a connection with a deterrent device in order to activate the latter in the event of intrusion detection with radio interference.

De manière alternative, le dispositif de détection peut être intégré dans un dispositif de dissuasion et comporter des moyens d'activation du dispositif de dissuasion en cas de détection d'intrusion avec brouillage radio.Alternatively, the detection device can be integrated in a deterrent device and include means for activating the deterrent device in the event of intrusion detection with radio interference.

Le dispositif de dissuasion peut comporter au moins l'un parmi une sirène, un générateur de fumée, un dispositif de diffusion de message vocal.The deterrent device may include at least one of a siren, a smoke generator, a voice message broadcast device.

Préférablement, le réseau LPWAN est relié à un centre de télésurveillance.Preferably, the LPWAN network is connected to a central monitoring station.

L'invention concerne en outre un système d'alarme comportant au moins un dispositif de détection de l'invention relié par les moyens ISM à une centrale d'alarme locale.The invention further relates to an alarm system comprising at least one detection device of the invention connected by the ISM means to a local alarm center.

L'invention propose par ailleurs un procédé de mise en oeuvre du dispositif de détection et d'alerte qui comporte:

  • une étape de mise en fonction du dispositif de détection;
  • une étape de veille dans laquelle le dispositif de détection scrute le dispositif de détection d'intrusion et le premier module radio en vue de détecter des évènements intrusion et/ou brouillage radio;
  • sur détection d'une intrusion sans détection de brouillage, une étape de communication ISM avec une centrale d'alarme locale qui gère le système d'alarme et qui prend en charge la gestion de l'intrusion;
  • sur détection d'un brouillage radio sans détection d'intrusion, une étape de transmission de l'information brouillage à un centre de télésurveillance distant par liaison monodirectionnelle LPWAN;
  • sur détection d'une intrusion et d'un brouillage radio, une étape de transmission de l'information intrusion et brouillage à un centre de télésurveillance distant par liaison monodirectionnelle LPWAN.
The invention also proposes a method for implementing the detection and warning device which comprises:
  • a step of operating the detection device;
  • a standby step in which the detection device scans the intrusion detection device and the first radio module for detecting intrusion events and / or radio interference;
  • on detection of an intrusion without interference detection, an ISM communication step with a local alarm center that manages the alarm system and supports the management of the intrusion;
  • on detection of radio interference without intrusion detection, a step of transmitting the scrambling information to a Remote Monitoring Center by LPWAN unidirectional link;
  • on detection of intrusion and radio interference, a step of transmitting the intrusion and jamming information to a Remote Monitoring Center by LPWAN one-way link.

Le dispositif de détection et d'alerte étant relié avec un dispositif de dissuasion, le procédé comporte préférablement une étape de mise en route du dispositif de dissuasion directement par le dispositif de détection sur détection par le dispositif de détection d'une intrusion et d'un brouillage.The detection and warning device being connected with a deterrent device, the method preferably comprises a step of starting the deterrent device directly by the detection device on detection by the detection device of an intrusion and of jamming.

Préférablement, la détection d'un brouillage radio comporte une temporisation adaptée à filtrer les brouillages parasites.Preferably, the detection of a radio interference includes a delay adapted to filter interference interference.

Brève description des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention seront apparents à la lecture de la description qui suit d'un exemple non limitatif de réalisation de l'invention en référence aux dessins qui représentent:

  • aux figures 1A et 1B: deux exemples de réalisation d'un dispositif de l'invention;
  • en figure 2: un exemple de schéma de système d'alarme équipé du dispositif de l'invention fonctionnant normalement en l'absence de brouillage;
  • en figure 3: le système d'alarme de la figure 2 en présence d'un brouillage;
  • en figure 4: un schéma de module radio applicable à l'invention.
Other characteristics and advantages of the invention will become apparent on reading the following description of a nonlimiting exemplary embodiment of the invention with reference to the drawings which represent:
  • the Figures 1A and 1B two embodiments of a device of the invention;
  • in figure 2 an example alarm system diagram equipped with the device of the invention operating normally in the absence of interference;
  • in figure 3 : the alarm system of the figure 2 in the presence of interference;
  • in figure 4 : a radio module diagram applicable to the invention.

Description détaillée de modes de réalisation de l'inventionDETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

Le dispositif de détection de la présente invention a objet principal de palier à la faille de sécurité liée à la perte de communication d'une centrale d'alarme avec ses capteurs et avec un centre de télésurveillance lors d'un brouillage radio.The detection device of the present invention has the main object of bearing the security breach related to the loss of communication of an alarm center with its sensors and with a central station during a radio jamming.

Les actions que peut réaliser le dispositif de l'invention dans un tel cas sont mettre instantanément en marche le système de dissuasion et en envoyer une alerte au centre de télésurveillance si, lorsqu'il est armé, il détecte un brouillage radio avec ou non intrusion.The actions that can be performed by the device of the invention in such a case are to instantly start the deterrent system and send an alert to the central station if, when armed, it detects a radio interference with or without intrusion .

Le dispositif de détection et d'alerte 10 tel que décrit à la figure 1A est composé a minimum:

  • d'un détecteur de mouvement 1 soit à infrarouge soit à ultrason, soit un double capteur infrarouge-ultrason pour une plus grande fiabilité;
  • d'un composant radio 2 permettant de détecter les brouillages sur la bande ISM et GSM;
  • d'un module radio 4 pourvu d'un composant d'émission et de réception, adapté d'une part à fonctionner sur la bande ISM du système d'alarme et comportant pour ce faire les protocoles de transmission adaptés à transmettre une trame de signal d'alerte vers la centrale d'alarme locale du système en mode normal, mais adapté d'autre part en mode de transmission monodirectionnel sur une bande de fréquences ISM telle que la bande 868 MHz en Europe et 902 MHz aux USA adaptée aux réseaux de transmission bas débit LPWAN en anglais "Low Power Wide Area Network" c'est à dire des réseaux étendus basse puissance externes au système d'alarme;
  • de moyens 3 de traitement T, moyens de calcul C et moyens de mémorisation M comme un calculateur à base de microcontrôleur pourvu de moyens de conversion analogique/numérique et numérique/analogique, réalisant un traitement du signal fourni par le détecteur de présence et par le composant radio de détection de brouillage ainsi qu'un pilotage du module radio émetteur/récepteur pour transmettre des alarmes selon le contexte;
  • de moyens d'alimentation électrique 5.
The detection and warning device 10 as described in Figure 1A is composed a minimum:
  • a motion detector 1 either infrared or ultrasound, or a dual infrared-ultrasonic sensor for greater reliability;
  • a radio component 2 for detecting interference on the ISM and GSM band;
  • a radio module 4 provided with a transmission and reception component, adapted on the one hand to operate on the ISM band of the alarm system and comprising for this purpose the transmission protocols adapted to transmit a signal frame to the system's local alarm center in normal mode, but also adapted in one-way transmission mode on an ISM frequency band such as the 868 MHz band in Europe and the 902 MHz band in the USA adapted to low-power LPWAN transmission in English "Low Power Wide Area Network" ie low-power extended networks external to the alarm system;
  • processing means 3, calculation means C and storage means M such as a microcontroller-based calculator provided with analog-to-digital and digital-to-analog conversion, performing signal processing provided by the presence detector and the interference detection radio component, and controlling the transmitter / receiver radio module to transmit alarms according to the context;
  • power supply means 5.

L'exemple de la figure 1B diffère de celui de la figure 1A en ce que le module radio 6, qui comporte un composant de réception 62 et un composant d'émission 61, réalise les fonctions d'émission/réception ISM, la fonction de surveillance de brouillage en scrutant sa partie réception outre les périodes d'émission/réception de trames ISM.The example of Figure 1B differs from that of the Figure 1A in that the radio module 6, which comprises a reception component 62 and a transmission component 61, performs the transmission / reception functions ISM, the interference monitoring function by scanning its reception part in addition to the transmission periods / receiving ISM frames.

Le module radio 4 de la figure 1A ou 6 de la figure 1B est adapté à émettre une trame de type bas débit par radio vers un réseau LPWAN.The radio module 4 of the Figure 1A or 6 of the Figure 1B is adapted to transmit a radio low bit rate frame to an LPWAN network.

Sur un tel réseau, la transmission se fait en mode monodirectionnel par une transmission radio généralement à faible débit. Un exemple de réseau bas débit approprié à l'invention est le réseau à bande ultra étroite "Ultra Narrow Band modulation" développé par la société SIGFOX qui opère dans la bande ISM et qui permet de transmettre des messages avec un débit de l'ordre de 100 bits par secondes sur de longues distances avec une grande robustesse contre le bruit et en particulier le brouillage.On such a network, the transmission is in one-way mode by a generally low-speed radio transmission. An example of a low-speed network suitable for the invention is the ultra-narrow band modulation ultra-narrow band network developed by the SIGFOX company which operates in the ISM band and which makes it possible to transmit messages with a bit rate of the order of 100 bits per second over long distances with great robustness against noise and in particular jamming.

Un autre exemple est le réseau utilisant un protocole et un support selon la norme LoRa qui est aussi adapté à la présente application. De même, le dispositif peut aussi être programmé pour utiliser les réseaux connus sous les appellations Nwave, Ingenu ou Weightless.Another example is the network using a protocol and a support according to the LoRa standard which is also adapted to the present application. Similarly, the device can also be programmed to use the networks known as Nwave, Ingenu or Weightless.

La transmission bas débit réseau LPWAN se fait en cas de détection de brouillage radio avec ou sans intrusion. Il est à noter que les dispositifs de brouillage susceptibles d'être employés contre les systèmes d'alarme affectent les récepteurs de ces systèmes en les saturant.The LPWAN low-speed network transmission is done in case of detection of radio interference with or without intrusion. It should be noted that interference devices that can be used against alarm systems affect the receivers of these systems by saturating them.

Le brouillage affecte donc la centrale d'alarme mais pas le dispositif de l'invention dans son mode de fonctionnement LPWAN où il n'a qu'une fonction d'émetteur monodirectionnel. De même, le récepteur distant du réseau n'est pas affecté par le brouilleur utilisé pour perturber la centrale d'alarme et éventuellement les téléphones GSM. En effet, les brouilleurs utilisés pour perturber des systèmes d'alarme ont une zone d'action de quelques mètres, voir quelques dizaines de mètres. De ce fait, la réception de l'information émise par le dispositif de l'invention est toujours possible par les récepteurs distants des réseaux LPWAN.The interference therefore affects the control panel but not the device of the invention in its LPWAN operating mode where it has only one transmitter function. Similarly, the receiver remote network is not affected by the jammer used to disrupt the control panel and possibly GSM phones. Indeed, jammers used to disrupt alarm systems have an action zone of a few meters, see a few dozen meters. As a result, the reception of the information transmitted by the device of the invention is still possible by the remote receivers of the LPWAN networks.

La figure 2 représente une architecture de système d'alarme traditionnel auquel est ajouté le dispositif de l'invention.The figure 2 represents a traditional alarm system architecture to which is added the device of the invention.

Le système d'alarme comporte des capteurs 11A, 11B, 11C, 11D, une centrale 15, un dispositif de dissuasion 12, sirène, générateur de fumée ou diffuseur de messages vocaux par exemple et le dispositif de l'invention 10.The alarm system comprises sensors 11A, 11B, 11C, 11D, a central unit 15, a deterrent device 12, a siren, a smoke generator or a voice message diffuser, for example, and the device of the invention 10.

Les différents capteurs, dispositif de dissuasion et dispositif de l'invention dialoguent de manière bidirectionnelle avec la centrale selon un protocole établi traditionnel. La centrale 15 est pour sa part régulièrement en liaison bidirectionnelle par le réseau GSM avec un centre de surveillance 100 comme connu dans le domaine.The various sensors, deterrent device and device of the invention dialog bidirectionally with the central according to a traditional established protocol. The unit 15 is for its part regularly bidirectional link by the GSM network with a monitoring center 100 as known in the field.

La figure 3 représente le même système dont les éléments sont perturbés par un dispositif brouilleur 60 qui perturbe les récepteurs des composants 10, 11, 12, 15 du système d'alarme et romps de ce fait les liaisons bidirectionnelles tant entre les capteurs, le dispositif de dissuasion et la centrale qu'entre la centrale et le centre de surveillance 100.The figure 3 represents the same system whose elements are disturbed by an interfering device 60 which disturbs the receivers of the components 10, 11, 12, 15 of the alarm system and thus breaks the bidirectional links between the sensors, the deterrent device and between the central and the monitoring center 100.

Dans cette configuration, le dispositif 10 de l'invention est toujours en mesure d'envoyer une ou plusieurs trames monodirectionnelles vers les antennes 70 du réseau LPWAN qui retransmet l'information au centre de surveillance 100.In this configuration, the device 10 of the invention is still able to send one or more unidirectional frames to the antennas 70 of the LPWAN network which retransmits the information to the monitoring center 100.

Le dispositif 10 peut être soit proposé sous forme de produit autonome et dans ce cas il est conditionné dans un petit boitier, alimenté par pile ou éventuellement batterie et capteur solaire et disposant d'une interface pour piloter un dispositif extérieur, Sirène, générateur de fumée, générateur de message vocaux, soit il est directement intégré dans le dispositif de dissuasion.The device 10 can either be provided as a stand-alone product and in this case it is packaged in a small box, powered by battery or possibly battery and solar collector and having an interface for driving an external device, siren, smoke generator voice message generator, or it is directly integrated into the deterrent device.

Le fonctionnement du dispositif est le suivant. Si le dispositif, alors qu'il est armé, détecte un brouillage radio il envoie sur le réseau LPWAN une alarme brouillage radio à destination du centre de surveillance de la société de télésurveillance et/ou du propriétaire de l'installation ou tout autre personne en charge de la surveillance du local et, si il détecte en plus une intrusion il va déclencher le dispositif de dissuasion qu'il pilote (Sirène, générateur de fumée, dissuadeur vocal, ...)The operation of the device is as follows. If the device, while armed, detects a radio interference it sends on the LPWAN network a radio jamming alarm to the monitoring center of the monitoring company and / or the owner of the installation or any other person in charge of the monitoring of the premises and, if it detects more an intrusion it will trigger the deterrent device that it controls (Siren, smoke generator, vocal dissuader, ...)

Les moyens de traitement et de calcul sont programmés pour fonctionner selon le processus suivant lorsque le dispositif est armé en mode de surveillance une fois mis en fonction:

  • réalisation d'une étape de veille dans laquelle le dispositif de détection scrute le dispositif de détection d'intrusion et le premier module radio en vue de détecter des évènements intrusion et/ou brouillage radio sous la forme d'une boucle logicielle incluant aussi un dialogue périodique avec la centrale d'alarme;
  • sur détection d'une intrusion sans détection de brouillage, démarrage d'une étape de communication ISM avec une centrale d'alarme locale qui gère le système d'alarme et qui prend en charge la gestion de l'intrusion;
  • sur détection d'un brouillage radio, sans détection d'intrusion, une étape de transmission de l'information brouillage à un centre de télésurveillance distant par liaison monodirectionnelle LPWAN pour l'informer d'une situation à risque et déclencher une réaction appropriée
  • sur détection d'une intrusion et d'un brouillage radio prolongé, une étape de transmission de l'information intrusion et brouillage à un centre de télésurveillance distant par liaison monodirectionnelle LPWAN pour informer de l'intrusion avec brouillage.
The processing and calculation means are programmed to operate according to the following process when the device is armed in monitoring mode when activated:
  • performing a standby step in which the detection device scans the intrusion detection device and the first radio module for detecting intrusion events and / or radio interference in the form of a software loop also including a dialogue periodic with the central alarm;
  • on detecting an intrusion without jamming detection, starting an ISM communication step with a local alarm center that manages the alarm system and supports the management of the intrusion;
  • on detection of radio interference, without intrusion detection, a step of transmitting the scrambling information to a LPWAN remote monitoring center by unidirectional link to inform it of a risk situation and trigger an appropriate reaction
  • on detection of intrusion and prolonged radio interference, a step of transmitting the intrusion and jamming information to a Remote Monitoring Center by LPWAN unidirectional link to inform interference intrusion.

Dans ce dernier cas, le dispositif de détection et d'alarme étant relié, de manière filaire ou infrarouge pour éviter tout brouillage radio, au dispositif de dissuasion ou intégré à ce dispositif, le logiciel du dispositif déclenche une étape de mise en route du dispositif de dissuasion directement par le dispositif de détection et d'alarme de l'invention.In the latter case, the detection and alarm device being connected, wired or infrared to prevent radio interference, to the deterrent device or integrated in this device, the device software triggers a step of starting the device deterrence directly by the detection and alarm device of the invention.

Une fois l'alarme déclenchée le centre de télésurveillance appliquera les consignes (Appel du propriétaire ou du responsable du site, appel des forces de police, ...) et le dispositif de dissuasion déroulera son cycle, sirène pendant un temps déterminé, ou émission de fumée ou émission de messages vocaux.Once the alarm has been triggered, the monitoring center will apply the instructions (call from the owner or the person in charge of the site, call from the police force, etc.) and the deterrent device will run its cycle, siren for a specified time, or broadcast. smoke or voice messages.

Il est à noter que la détection de brouillage est réalisée par exemple au moyen d'une boucle temporisée comportant une succession de détections de confirmation de présence de brouillage pour éliminer les fausses détections telles que les brouillages dus à des démarrages de moteurs électriques, défaut d'antiparasitage de deux roues ou autres brouillages parasites fortuits.It should be noted that the detection of interference is carried out for example by means of a delayed loop comprising a succession of jamming presence confirmation detections to eliminate false detections such as interference due to electric motor starts, failure to interference suppression of two wheels or other incidental interference.

Le dispositif de l'invention, qui doit être distinct de la centrale d'alarme locale dont la destruction est en général la cible prioritaire des cambrioleurs utilisant des brouilleurs, peut être caché pour ne pas être repéré et continuer d'émettre dans le cas où la centrale serait détruite. En particulier le dispositif de l'invention peut par exemple être disposé de façon à surveiller l'accès à la centrale.The device of the invention, which must be distinct from the local alarm center whose destruction is in general the priority target of burglars using jammers, can be hidden so as not to be spotted and continue to transmit in the event that the plant is destroyed. In particular the device of the invention may for example be arranged to monitor access to the plant.

La figure 4 donne un exemple de module radio intégré utilisable dans le cadre de l'invention. Ce module comporte, à partir de l'antenne externe 200,:

  • un premier commutateur émission/réception 201 séparant une voie de réception avec un filtre passe bande RF 202, un amplificateur faible bruit 203 et une voie d'émission avec un amplificateur de puissance 204 et un driver (pilote) 205;
  • un deuxième commutateur émission/réception recevant ou alimentant une partie commune à rémission/réception avec un passe bande RF 207, un mélangeur 209 sur lequel arrive un signal issu d'un synthétiseur de fréquence RF 208, un passe bande sur fréquence intermédiaire 210;
  • un troisième commutateur 211 alimentant une partie de réception pourvue d'un amplificateur fréquence intermédiaire 212, un mélangeur 214, sur lequel arrive un signal émis par un générateur FI 216, et un filtre passe bas BF 217 et recevant un signal d'une partie d'émission pourvue d'un amplificateur FI 213, un mélangeur 215 et un filtre passe bande FI 218.
The figure 4 gives an example of integrated radio module usable in the context of the invention. This module comprises, from the external antenna 200,
  • a first transmit / receive switch 201 separating a receive channel with an RF bandpass filter 202, a low noise amplifier 203 and a transmit channel with a power amplifier 204 and a driver (driver) 205;
  • a second transmit / receive switch receiving or supplying a common remission / reception part with an RF bandpass 207, a mixer 209 on which arrives a signal from an RF frequency synthesizer 208, an intermediate frequency band pass 210;
  • a third switch 211 supplying a reception part provided with an intermediate frequency amplifier 212, a mixer 214, on which a signal emitted by an IF generator 216 arrives, and a low pass filter BF 217 and receiving a signal of a part d transmission provided with an IF amplifier 213, a mixer 215 and an IF pass filter 218.

Les signaux BF reçus sont convertis par un convertisseur analogique/numérique 301 des moyens de traitement 3 pour être traités selon le mode de fonctionnement du dispositif.The received signals BF are converted by an analog / digital converter 301 processing means 3 to be processed according to the operating mode of the device.

Les signaux BF émis sont issus d'un convertisseur numérique/analogique 302 des moyens de traitement 3.The signals BF emitted come from a digital-to-analog converter 302 of the processing means 3.

De même la commande des commutateurs est faite par les moyens de traitement en fonction de la phase de programme réalisée.Similarly, the control of the switches is made by the processing means according to the program phase performed.

Dans le cas où un tel module est utilisé pour détecter les brouillages, les moyens de traitement scrutent la sortie du convertisseur 303 pour détecter une saturation prolongée de la sortie du récepteur.In the case where such a module is used to detect interference, the processing means scan the output of the converter 303 to detect prolonged saturation of the output of the receiver.

Comme vu précédemment, le module de la figure 4 peut être dédié aux émissions/réceptions, un module récepteur simple annexe servant à la détection de brouillages.As seen previously, the module of the figure 4 can be dedicated to transmissions / receptions, a simple annex receiver module for the detection of interference.

L'invention n'est pas limitée aux exemples représentés et notamment comme dit plus haut, le dispositif de détection et d'alerte de l'invention peut être intégré dans un équipement du système d'alarme autre que la centrale tel qu'un dispositif de dissuasion.The invention is not limited to the examples shown and in particular, as said above, the detection and warning device of the invention can be integrated into an equipment of the alarm system other than the central unit such as a device deterrence.

Claims (14)

Dispositif (10) de détection et d'alerte pour système d'alarme caractérisé en ce qu'il comporte: - au moins un dispositif de détection d'intrusion (1), - un composant radio (2, 62) de détection de brouillage sur les bandes ISM et GSM, - des moyens de traitement, moyens de calcul et moyens de mémorisation (3), configurés pour réaliser un traitement du signal fourni par le détecteur de détection d'intrusion et du composant radio de détection de brouillage afin de détecter une intrusion et/ou un brouillage radio, - un module radio (4, 6) comportant un composant radio d'émission (41, 61) ISM et LPWAN et configuré pour transmettre un signal d'alerte soit vers une centrale d'alarme locale en bande ISM sur détection d'intrusion sans brouillage radio, soit vers un réseau LPWAN en mode monodirectionnel en cas de détection de brouillage radio avec ou sans détection d'intrusion et un composant radio de réception (42, 62) ISM; - des moyens d'alimentation électrique. Device (10) for detecting and alerting an alarm system, characterized in that it comprises: at least one intrusion detection device (1), a radio interference detection component (2, 62) on the ISM and GSM bands, processing means, calculating means and storage means (3) configured to perform signal processing provided by the intrusion detection detector and the scrambling detection radio component to detect an intrusion and / or radio jamming, a radio module (4, 6) comprising a transmission radio component (41, 61) ISM and LPWAN and configured to transmit an alert signal to either an ISM band local alarm control panel on intrusion detection without radio interference, either to a LPWAN network in one-way mode in case of radio interference detection with or without intrusion detection and a receiving radio component (42, 62) ISM; - Power supply means. Dispositif (10) de détection et d'alerte pour système d'alarme selon la revendication 1 pour lequel le composant radio de détection de brouillage est le composant radio (62) de réception ISM du module radio.Alarm detection and alerting device (10) according to claim 1, wherein the interference detection radio component is the radio receiving component (62) of the radio module ISM. Dispositif (10) de détection et d'alerte pour système d'alarme selon la revendication 1 pour lequel le module radio (4) comporte un composant radio de réception (42) ISM distinct du composant radio (2) de détection de brouillage.An alarm system detecting and alerting device (10) according to claim 1, wherein the radio module (4) has a separate ISM receiving radio component (42) separate from the interference detecting radio component (2). Dispositif de détection et d'alerte selon la revendication 1, 2 ou 3 caractérisé en ce que le dispositif de détection d'intrusion (1) comporte un détecteur de mouvements.Detection and warning device according to claim 1, 2 or 3 characterized in that the intrusion detection device (1) comprises a motion detector. Dispositif de détection et d'alerte selon la revendication 4 caractérisé en ce que le détecteur de mouvements comporte au moins l'un parmi un capteur infrarouge, un capteur ultra son ou une caméra.Detection and warning device according to claim 4 characterized in that the motion detector comprises at least one of an infrared sensor, an ultrasonic sensor or a camera. Dispositif de détection et d'alerte selon l'une quelconque des revendications précédentes caractérisé en ce que le dispositif de détection d'intrusion (1) comporte un capteur d'ouvrant.Detection and warning device according to any one of the preceding claims, characterized in that the intrusion detection device (1) comprises an opening sensor. Dispositif de détection et d'alerte selon l'une quelconque des revendications précédentes caractérisé en ce qu'il comporte une liaison avec un dispositif de dissuasion (12) afin d'activer ce dernier en cas de détection d'intrusion avec brouillage radio.Detection and warning device according to any one of the preceding claims, characterized in that it comprises a connection with a deterrent device (12) in order to activate it in case of intrusion detection with radio interference. Dispositif de détection et d'alerte selon l'une quelconque des revendications 1 à 6 caractérisé en ce qu'il est intégré dans un dispositif de dissuasion (12) et comporte des moyens d'activation du dispositif de dissuasion en cas de détection d'intrusion avec brouillage radio.Detection and warning device according to any one of Claims 1 to 6, characterized in that it is integrated in a deterrent device (12) and comprises means for activating the deterrent device in the event of detection of intrusion with radio interference. Dispositif de détection et d'alerte selon la revendication 7 ou 8 caractérisé en ce que le dispositif de dissuasion (12) comporte au moins l'un parmi une sirène, un générateur de fumée, un dispositif de diffusion de message vocal.Detection and warning device according to claim 7 or 8 characterized in that the deterrent device (12) comprises at least one of a siren, a smoke generator, a voice message broadcasting device. Système d'alarme comportant un dispositif de détection et d'alerte selon l'une quelconque des revendications précédentes pour lequel le réseau LPWAN est relié à un centre de télésurveillance (100).Alarm system comprising a detection and warning device according to any preceding claim for which the LPWAN network is connected to a central monitoring station (100). Système d'alarme comportant au moins un dispositif de détection et d'alerte selon l'une quelconque des revendications précédentes pour lequel le dispositif est relié par les moyens ISM à une centrale d'alarme locale (15).Alarm system comprising at least one detection and warning device according to any one of the preceding claims for which the device is connected by the ISM means to a local alarm center (15). Procédé de mise en oeuvre d'un dispositif de détection et d'alerte selon l'une quelconque des revendications précédentes caractérisé en ce qu'il comporte: - une étape de mise en fonction du dispositif de détection; - une étape de veille dans laquelle le dispositif de détection scrute le dispositif de détection d'intrusion et le premier composant récepteur radio en vue de détecter des évènements intrusion et/ou brouillage radio; - sur détection d'une intrusion sans détection de brouillage, une étape de communication ISM avec une centrale d'alarme locale qui gère le système d'alarme et qui prend en charge la gestion de l'intrusion; - sur détection d'un brouillage radio sans détection d'intrusion, une étape de transmission de l'information brouillage à un centre de télésurveillance distant par liaison monodirectionnelle LPWAN; - sur détection d'une intrusion et d'un brouillage radio, une étape de transmission de l'information intrusion et brouillage à un centre de télésurveillance distant par liaison monodirectionnelle LPWAN. Method for implementing a detection and warning device according to any one of the preceding claims, characterized in that it comprises: a step of activating the detection device; a standby step in which the detection device scans the intrusion detection device and the first radio receiver component in order to detect intrusion and / or radio interference events; - On detection of an intrusion without jamming detection, an ISM communication step with a local alarm center which manages the alarm system and which supports the management of the intrusion; - on detecting a radio interference without intrusion detection, a step of transmitting the scrambling information to a Remote Monitoring Center by LPWAN unidirectional link; - on detection of an intrusion and a radio jamming, a step of transmitting intrusion and jamming information to a Remote Monitoring Center by LPWAN unidirectional link. Procédé selon la revendication 12 pour lequel le dispositif de détection et d'alerte étant relié avec un dispositif de dissuasion ou intégré dans un dispositif de dissuasion, le procédé comporte une étape de mise en route du dispositif de dissuasion directement par le dispositif de détection sur détection d'une intrusion et d'un brouillage par le dispositif de détection.A method according to claim 12 wherein the detection and warning device is connected with a deterrent or integrated in a deterrent device, the method comprises a step of starting the deterrent device directly by the detecting device on detection of an intrusion and a scrambling by the detection device. Procédé selon la revendication 12 ou 13 pour lequel la détection d'un brouillage radio comporte une temporisation adaptée à filtrer les brouillages parasites.The method of claim 12 or 13 wherein the detection of a radio interference includes a timer adapted to filter interference interference.
EP18202689.8A 2017-10-26 2018-10-25 Detection and alert device for alarm system and alarm system comprising same Active EP3477611B1 (en)

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FR3073070A1 (en) 2019-05-03
PT3477611T (en) 2021-10-19
ES2894274T3 (en) 2022-02-14
FR3073070B1 (en) 2023-05-05

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