EP3472811B1 - Alarm sensor and system comprising such a sensor - Google Patents

Description

TECHNICAL AREA

The present invention relates to alarm sensors, alarm systems, and their uses.

STATE OF PRIOR ART

We know of autonomous alarm systems which are composed of a single object to be fixed on the element to be protected. These standalone alarms usually include an opening sensor or a volumetric sensor, and a siren.

Centralized alarm systems are known which include a central unit, and a plurality of sensors of various types, connected to said central alarm unit by a wired or wireless link.

These autonomous or centralized alarm systems must be activated manually by the user each time they leave the premises, the premises then being assumed to be empty. They must be manually deactivated by the user each time they enter the premises, to avoid any alerts. If the user forgets to activate the alarm system when leaving the premises, the premises are not protected. There is also a partial activation mode for protection with a user authorized to move within part of the premises.

If the user forgets to deactivate the alarm system when entering the premises, a false alert may be generated.

This is why centralized alarm systems are usually connected to a remote monitoring manager who first calls the user, and who only calls in a security agent after this verification. Unfortunately, this process is costly and slows down response in the event of a real intrusion.

The document FROM 10 2013 103535 describes an anti-intrusion system in which the detection of movement in a room triggers a request to deactivate the door opening sensor placed at the entrance to the room.

STATEMENT OF THE INVENTION

The aim of the present invention is to propose an alarm sensor for an opening and an alarm system comprising such a sensor which avoids the drawbacks listed above.

The opening is for example a door or a window. This opening comprises a fixed part surrounding an opening and a movable part adapted to close or open said opening, said opening being located between an interior space and an exterior space of the premises.

For this purpose, the invention is defined by the alarm sensor according to claim 1.

Thanks to the combination of an opening sensor and an inhibition device, the alarm sensor distinguishes openings of the sash coming from the outside, which are very relevant for detecting an intrusion, from those coming from inside which are to be deleted. Thus, the false detection rate is greatly reduced.

The alarm system can then send the alert directly to the relevant security guard, reducing response time. The cost of the remote monitoring manager can be greatly reduced. Additionally, the alarm system can send the same alert simultaneously to the user for further verification.

Additionally, the user of an alarm system using this sensor does not need to deactivate the alarm when it is present, they simply need to identify itself when it comes in, so that the alarm system can remain active permanently. Thanks to this operation, the user can no longer forget to activate the alarm system when leaving the premises, and there is no risk of leaving this premises unprotected.

In addition, this operation is generally easier to use.

Finally, if the user uses a wireless electronic device (i.e. a wireless badge) associated with the cancellation device, the user no longer has to perform any action during entry and exit.

In various embodiments of the alarm sensor according to the invention, it is possible to also use one and/or the other of the following arrangements.

According to one aspect, the opening sensor comprises two elements, a first element being connected to the fixed part of the opening and a second element being connected to the movable part of the opening, said opening sensor being adapted to detect an opening event when the second element moves away from the first element.

According to one aspect, the opening sensor detects the opening event by magnetic effect or by optical effect or by movement.

• soit un bouton adapté pour être appuyé par une personne,
• soit un capteur volumétrique qui détecte le mouvement d'une personne,
• soit un capteur volumétrique qui détecte le mouvement d'une personne qui se rapproche dudit dispositif d'inhibition,
• soit une caméra qui capture des images temporellement successives et qui détecte le mouvement dans lesdites images,
• soit un capteur de proximité.

According to one aspect, the inhibition device is a device comprising:

• either a button adapted to be pressed by a person,
• either a volumetric sensor which detects the movement of a person,
• either a volumetric sensor which detects the movement of a person who approaches said inhibition device,
• either a camera which captures temporally successive images and which detects the movement in said images,
• or a proximity sensor.

According to one aspect, the inhibition device is a volumetric sensor which detects the movement of a person and which detects if said person moves away from said inhibition device, and in which the electronic unit provides the detection signal only if the presence detected by the inhibition device corresponds to a movement of said person away from said inhibition device.

• soit un lecteur de badge,
• soit un lecteur sans fil,
• soit un clavier,
• soit un lecteur biométrique.

According to one aspect, the cancellation device comprises:

• either a badge reader,
• either a wireless reader,
• either a keyboard,
• or a biometric reader.

In one aspect, the undo device is a wireless reader adapted to be wirelessly connected to a wireless electronic device.

According to one aspect, said wireless electronic device has a wireless transmission means which has a range which is a maximum detection distance, and the cancellation device transmits to the wireless electronic device an adjustment value of said range of the device wireless electronics.

In one aspect, the override device may be activated if it detects the presence of the wireless electronic device.

In one aspect, the wireless reader estimates a distance between said wireless reader and the wireless, mobile electronic device.

In one aspect, the cancellation device (24) can be activated only if the distance is less than a cancellation distance.

In one aspect, the cancellation distance is less than 5 meters.

In one aspect, the cancellation distance is less than 2 meters.

In one aspect, the cancellation distance is a function of an identifier of the mobile electronic device.

According to one aspect, the cancellation distance is determined based on previously detected rest distances, a rest distance being a distance between the wireless reader and the mobile electronic device which is maintained for a duration greater than a third duration, the cancellation distance then being less than any rest distance.

• si le dispositif électronique sans fil est détecté pendant une durée supérieure à une quatrième durée, le dispositif électronique sans fil est désactivé, et
• si le dispositif électronique sans fil n'est plus détecté, le dispositif électronique sans fil est activé.

According to one aspect, the cancellation device carries out a process of monitoring wireless electronic devices, during which:

• if the wireless electronic device is detected for a duration greater than a fourth duration, the wireless electronic device is deactivated, and
• if the wireless electronic device is no longer detected, the wireless electronic device is activated.

• si le dispositif électronique sans fil est détecté, on incrémente un compteur,
• si le compteur est supérieur à une valeur seuil, le dispositif électronique est désactivé, ce qui signifie qu'il ne peut plus activer le dispositif d'annulation
• si le dispositif électronique sans fil n'est pas détecté, le compteur est remis à une valeur initiale et le dispositif électronique sans fil est activé, ce qui signifie qu'il peut activer le dispositif d'annulation.

According to one aspect, the cancellation device performs a process of monitoring wireless electronic devices by analyzing the presence of wireless electronic devices, repetitively with an analysis period, and during each analysis:

• if the wireless electronic device is detected, a counter is incremented,
• if the counter is greater than a threshold value, the electronic device is deactivated, which means that it can no longer activate the cancellation device
• if the wireless electronic device is not detected, the counter is reset to an initial value and the wireless electronic device is activated, which means it can activate the override device.

According to one aspect, after detection of the opening event, the analysis period is set to a first value, then after a predetermined number of analyses, the analysis period is set to a second value greater than the first value.

According to one aspect, the inhibition device is a volumetric sensor which detects the movement of a person and which detects if said person moves away from said inhibition device, and in which the electronic unit provides the detection signal only if the presence detected by the inhibition device corresponds to a movement of said person away from said inhibition device.

According to one aspect, the inhibition device is a volumetric sensor positioned so that a first plane is a plane substantially perpendicular to the opening and substantially perpendicular to the floor of the room, said first plane being the plane of highest density of alternation active and inactive for motion detection.

According to one aspect, the volumetric sensor has a first opening angle in said first plane less than 45°.

According to one aspect, the inhibition device is a volumetric sensor which is directed towards the interior handle of the opening or a point located near said handle.

According to one aspect, the inhibition device is a volumetric sensor which comprises two detection elements and a wall located between said detection elements.

According to one aspect, the volumetric sensor does not include an optical system for focusing on said detection elements.

According to one aspect, the alarm sensor is adapted to be fixed on the opening.

According to one aspect, the alarm sensor comprises at least one part adapted to be fixed on the movable part of the opening.

According to one aspect, the opening is either a door or a window.

According to one aspect, the electronic unit comprises a transmission member adapted to transmit the detection signal either by a wired connection or by a wireless connection.

• un capteur d'alarme du type cité ci-dessus, et
• une centrale d'alarme adaptée pour recevoir le signal de détection en provenance du capteur d'alarme, et comprend un dispositif d'alerte adapté pour générer une alerte si un signal de détection est reçu.

The invention also relates to an alarm system for a building premises comprising:

• an alarm sensor of the type cited above, and
• an alarm center adapted to receive the detection signal from the alarm sensor, and comprises an alert device adapted to generate an alert if a detection signal is received.

In various embodiments of the alarm system according to the invention, it is possible to also use one and/or the other of the following arrangements.

According to one aspect, the alarm sensor and the alarm center are integrated into a single housing.

BRIEF DESCRIPTION OF THE DRAWINGS

Other characteristics and advantages of the invention will appear during the following description of six of its embodiments, given by way of non-limiting example, with reference to the attached drawings.

• la figure 1 est une vue schématique générale d'un premier mode de réalisation d'un système d'alarme selon l'invention installé sur un ouvrant ;
• la figure 2 est une vue schématique du premier mode de réalisation du système d'alarme de la figure 1 ;
• la figure 3 est une vue schématique d'un deuxième mode de réalisation d'un système d'alarme selon l'invention ;
• la figure 4 est une vue schématique d'un troisième mode de réalisation d'un système d'alarme selon l'invention ;
• la figure 5 est une vue schématique d'un quatrième mode de réalisation d'un système d'alarme selon l'invention ;
• la figure 6 est une vue schématique d'un cinquième mode de réalisation d'un système d'alarme selon l'invention ;
• la figure 7 est une vue schématique d'un sixième mode de réalisation d'un système d'alarme selon l'invention ;
• la figure 8 est un diagramme montrant un procédé d'utilisation d'un système d'alarme selon l'art antérieur ;
• la figure 9 est un diagramme montrant un procédé d'utilisation d'un système d'alarme selon l'invention ;
• la figure 10 est une vue schématique, vue de face d'un mode de réalisation comprenant un dispositif d'inhibition de type capteur volumétrique ; et
• la figure 11 est une vue schématique de côté du mode de réalisation de la figure 10.

On the drawings:

• there figure 1 is a general schematic view of a first embodiment of an alarm system according to the invention installed on an opening;
• there figure 2 is a schematic view of the first embodiment of the alarm system of the figure 1 ;
• there Figure 3 is a schematic view of a second embodiment of an alarm system according to the invention;
• there Figure 4 is a schematic view of a third embodiment of an alarm system according to the invention;
• there Figure 5 is a schematic view of a fourth embodiment of an alarm system according to the invention;
• there Figure 6 is a schematic view of a fifth embodiment of an alarm system according to the invention;
• there figure 7 is a schematic view of a sixth embodiment of an alarm system according to the invention;
• there figure 8 is a diagram showing a method of using an alarm system according to the prior art;
• there Figure 9 is a diagram showing a method of using an alarm system according to the invention;
• there Figure 10 is a schematic view, front view of an embodiment comprising an inhibition device of the volumetric sensor type; And
• there Figure 11 is a schematic side view of the embodiment of the Figure 10 .

In the different figures, the same numerical references designate identical or similar elements.

DETAILED DESCRIPTION OF EMBODIMENTS

There figure 1 is a general view of the system of a first embodiment of an alarm system 10 according to the invention.

• un capteur d'alarme 20 pour ouvrant selon l'invention,
• une centrale 30 incluant par exemple dans un boîtier un afficheur 31 et un clavier de centrale 32, et
• éventuellement, un clavier déporté 40, avantageusement placé à proximité d'une porte d'entrée, correspondant à un ouvrant 1 d'un local de bâtiment, et/ou une sirène externe 41, l'un et l'autre étant reliés au boîtier de la centrale 30 par une liaison filaire ou sans fil pour plus de facilité et de sécurité.

This alarm system 10 includes for example:

• an alarm sensor 20 for opening according to the invention,
• a control unit 30 including for example in a housing a display 31 and a control unit keyboard 32, and
• possibly, a remote keyboard 40, advantageously placed near an entrance door, corresponding to an opening 1 of a building premises, and/or an external siren 41, both being connected to the central unit 30 via a wired or wireless connection for greater ease and security.

The opening 1 shown in figure 1 is a door, but the opening could be a window. The opening 1 comprises a fixed part 2 surrounding an opening and a movable part 3 adapted to close or open said opening. This opening 1 (opening) is located between an interior space and an exterior space of the premises. With this alarm system, we therefore seek to protect the premises from any unwanted intrusion from the outside.

There figure 2 shows more precisely the alarm system 10 comprising the alarm sensor 20 for opening and the alarm center 30 according to a first embodiment of the invention.

• un capteur d'ouverture 21 qui détecte un événement d'ouverture de l'ouvrant 1,
• un dispositif d'inhibition 22 qui détecte la présence d'une personne dans l'espace intérieur à proximité de l'ouvrant 1, et
• une unité électronique 23 connectée au capteur d'ouverture 21 et au dispositif d'inhibition 22 et qui génère un signal de détection.

The alarm sensor 20 includes:

• an opening sensor 21 which detects an opening event of the opening 1,
• an inhibition device 22 which detects the presence of a person in the interior space near the opening 1, and
• an electronic unit 23 connected to the opening sensor 21 and to the inhibition device 22 and which generates a detection signal.

The opening sensor 21 is adapted to detect an opening event of the opening 1, that is to say the opening of the mobile part 3. This opening event can be determined by the movement of the movable part 3 relative to the fixed part 2, or by only the movement of the movable part 3.

According to a first variant, the opening sensor 21 can comprise a single element connected to the mobile part 3 to measure its movement, that is to say its displacement, its speed or its acceleration. We can thus use an accelerometric sensor or a gyroscopic sensor to detect this movement.

According to a second variant, the sensor opening 21 may comprise two elements 21a, 21b. The first element 21a is connected to the movable part 3 and the second element 21b is connected to the fixed part 2, as illustrated in figures 1 and 2 , Or vice versa.

The opening sensor 21 of this second variant is for example a magnetic sensor. A magnet is housed in the first element 21a and a sensor of the “Reed” sensor or “Hall” effect sensor type is housed in the second element 21b. Such a well-known “Reed” sensor comprises flexible blades of magnetic material which magnetize by influence, and are attracted to each other in the presence of a magnetic field generated by the magnet. This sensor therefore closes an electrical circuit when the first and second elements 21a, 21b are close to each other.

The opening sensor 21 of this second variant is possibly an optical sensor, the first element 21a accommodating a reflector and the second element accommodating an optical type transceiver, for example infrared, as is also well known.

The opening sensors 21 according to this second variant have the advantage of very reliably detecting the closed state or the open state of the opening 1. The alarm system 10 can thus be automatically and systematically activated as soon as the The closed state is detected.

• un capteur de mouvement (mesure de déplacement, de vitesse ou accélération), tel qu'un accéléromètre, et
• un capteur de position (mesure de la position fermée), tel qu'un capteur de magnétique de proximité cité ci-dessus ou tel qu'un capteur magnétique de champ terrestre.

According to a third variant, the opening sensor 21 combines:

• a motion sensor (measurement of displacement, speed or acceleration), such as an accelerometer, and
• a position sensor (measurement of the closed position), such as a proximity magnetic sensor mentioned above or such as an earth field magnetic sensor.

• soit un changement de position espacé d'un précédent événement d'ouverture d'une durée entre événement supérieure à une durée minimale ; cette durée minimale étant de préférence supérieure à une deuxième durée D2 (concernant l'annulation) définie ci-après ;
• soit un changement de position d'un premier élément par rapport à un deuxième élément, le deuxième élément étant à la position fermée de de l'ouvrant ;
• soit en calculant une position intermédiaire de l'ouvrant à l'aide des deux capteurs (capteur de position et capteur de mouvement) et un évènement d'ouverture est validé si la position intermédiaire de l'ouvrant dépasse un premier seuil, et un événement de fermeture est validé si la position intermédiaire de l'ouvrant est inférieure à un second seuil, ce qui correspond à une fonction d'hystérésis qui est réinitialisée par la position de fermeture complète détectée par le capteur de position.

The opening event is defined by:

• either a change of position spaced from a previous opening event with a duration between events greater than a minimum duration; this minimum duration being preferably greater than a second duration D2 (concerning the cancellation) defined below;
• either a change in position of a first element relative to a second element, the second element being in the closed position of the opening;
• either by calculating an intermediate position of the opening using the two sensors (position sensor and movement sensor) and an opening event is validated if the intermediate position of the opening exceeds a first threshold, and an event closing is validated if the intermediate position of the sash is less than a second threshold, which corresponds to a hysteresis function which is reset by the fully closed position detected by the position sensor.

The inhibition device 22 is adapted to at least determine the presence of a person in the interior space near the opening 1.

According to a first variant, the inhibition device 22 is a simple push button, the person having to press said push button before each opening event of the opening 1, to signal their presence inside, and therefore signal in suggests that the opening event of the opening 1 will correspond to an opening action carried out from inside the premises, and therefore that this opening event is carried out by an authorized person and not by an intruder.

According to a second variant, the inhibition device 22 is a volumetric sensor making it possible to detect a movement in a detection zone (volume) in front of said volumetric sensor. This volumetric sensor, often called a pyroelectric sensor, usually includes an optical system which divides the detection zone alternately into active and inactive, an infrared detector (adapted to the infrared domain) which provides a movement signal, and processing electronics which detect variations in this signal, and therefore a movement of a person (infrared transmitter) in the detection zone.

In this variant, the inhibition device 22 directly and autonomously detects the presence of a person in the detection zone by the movement of said person. The detection zone is then advantageously adjusted to detect a portion of the interior space near the opening 1. For example, the detection zone will cover a projected portion of 2x2 m (on the ground) in front of this opening 1. The device inhibition 22 then has an inhibition distance of 2 meters below which detection will have the effect of avoiding the emission of the detection signal by the electronic unit 23.

• si les variations correspondent à un signal d'une personne qui s'éloigne du capteur volumétrique, i.e. personne provenant de l'extérieur du local, surtout s'il n'y a pas eu de mouvement inverse de rapprochement avant, et donc correspondant à une personne non autorisée (intrus).

According to a third variant, the inhibition device 22 is a volumetric sensor making it possible to detect a movement in a detection zone (volume), only if said movement is a movement which approaches the movement sensor device. In this variant, the processing electronics not only detects variations in the movement signal, but also determines:
if the variations correspond to a signal from a person who approaches the volumetric sensor, ie a person coming from inside the premises, and corresponding to a person a priori authorized; Or

• if the variations correspond to a signal from a person moving away from the volumetric sensor, ie a person coming from outside the premises, especially if there has been no reverse movement of approach before, and therefore corresponding to an unauthorized person (intruder).

In this case, the electronic unit 23 will not provide the detection signal only if the presence detected by the inhibition device corresponds to a movement of said person away from said inhibition device.

According to a fourth variant, the inhibition device 22 is a camera which detects a movement in a detection zone (portion of the image), by processing temporally successive images (for example by correlation between said portions of successive images ).

According to a fifth variant, the inhibition device 22 is a proximity sensor which detects a simple presence nearby, that is to say at a short distance, for example less than 50 centimeters. This proximity sensor is for example an infrared sensor, or a light-emitting diode (LED) sensor of the emission/reception type advantageously placed near the handle.

1. 1) si le capteur d'ouverture a détecté un événement d'ouverture, et
2. 2) si le dispositif d'inhibition n'a pas détecté de présence pendant une première durée D1 avant l'évènement d'ouverture.

The electronic unit 23 is connected to the opening sensor 21 and to the inhibition device 22, receives their respective signals (opening event and presence of a person, respectively), and provides a detection signal:

1. 1) if the opening sensor has detected an opening event, and
2. 2) if the inhibition device has not detected a presence for a first duration D1 before the opening event.

The term “providing a detection signal” means providing a non-zero detection signal; which means that a validated opening event has been detected; i.e. emit or transmit a detection signal. This is the known operation of alarm sensors which provide a detection signal after the detection of an event, and which do not provide one if no event is detected. These detectors, usually of the type without wire and self-powered by a cell or battery, thus saving energy.

The first duration D1 is adjustable analog or digital. It is for example between 1 second and 10 minutes. It is for example of the order of 1 minute, so that any opening event preceded by a presence detection in the previous minute will be deactivated and will not generate any detection signal.

Thanks to the preceding logic, the alarm sensor 20 according to the invention takes into account the opening event detected by the opening sensor 21 only if no presence has been detected by the inhibition device 22 during the first duration D1 preceding the opening event.

• soit lorsque la personne à l'intérieur a appuyé sur un bouton poussoir (dispositif d'inhibition 22) durant la première durée D1 précédent l'évènement d'ouverture,
• soit lorsque la personne passe dans la zone de détection du capteur volumétrique (dispositif d'inhibition 22) durant la première durée D1 précédent l'évènement d'ouverture,
• soit lorsque la personne passe dans la zone de détection du capteur volumétrique (dispositif d'inhibition 22) en se rapprochant de celui-ci durant la première durée D1 précédent l'évènement d'ouverture.

Thus, all opening events caused by a person located in the interior space of the room are inhibited or suppressed. According to the five variants of the inhibition device 22 cited above, these opening events are inhibited or suppressed to generate the detection signal, respectively:

• either when the person inside has pressed a push button (inhibition device 22) during the first duration D1 preceding the opening event,
• either when the person passes into the detection zone of the volumetric sensor (inhibition device 22) during the first duration D1 preceding the opening event,
• or when the person passes into the detection zone of the volumetric sensor (inhibition device 22) by approaching it during the first duration D1 preceding the opening event.

In this third variant, if the person passes into the detection zone of the volumetric sensor (inhibition device 22) while moving away from it, this presence detection will not be considered, and a opening event which would be detected would be considered relevant to generate a detection signal and an alert. Furthermore, preferably, the removal of the person has the effect of canceling the previous approach, so that the alarm sensor 20 remains active even if the person inside the room approaches and moves away. of the sensor.

Thanks to this logic, when opening events do not generate a detection signal, they will not generate an alert from the alarm system, i.e. a false alarm. These opening events caused by a person located inside the premises do not correspond to an intrusion, and are therefore assumed to be carried out by an authorized person.

The alarm sensor 20 according to this first embodiment is advantageously integrated into a single sensor housing 28 when the opening sensor 21 is composed of a single element. In this case, the sensor box 28 is adapted to be fixed on the movable part of the opening 1 (shape, dimensions, etc.). Alternatively, the assembly of the second element 21b, the inhibition device 22, and the electronic unit 23 is integrated into a single sensor housing 28 as shown in figure 2 . This sensor box 28 is then adapted to be fixed on the fixed part of the opening 1 (shape, dimensions, etc.), or vice versa.

Thanks to this alarm sensor 20 combining an opening sensor and an inhibition device, the false detection rate is very greatly reduced.

This alarm sensor 20 can then be connected by an internal connection 29 (sensor-central connection) wired or wireless to an alarm central 30 as shown in figure 1 . This alarm center 30 can be an alarm center as currently known, or a simplified alarm center 30, and adapted only to the present alarm sensor 20.

• un dispositif d'annulation de centrale 34 qui est activé par l'identification d'une personne autorisée, et
• un dispositif d'alerte de centrale 35 qui génère une alerte pour notifier une intrusion à des tierces personnes (par exemple par une sirène, message SMS, ...).

In figure 2 an alarm center 30 is shown for the alarm sensor of the first embodiment. This alarm center 30 includes:

• a central cancellation device 34 which is activated by the identification of an authorized person, and
• a central alert device 35 which generates an alert to notify third parties of an intrusion (for example by a siren, SMS message, etc.).

The central cancellation device 34 is adapted to be activated by the identification of a person, and to cancel the alert if the central cancellation device 34 has been activated for a second duration D2 after the event d 'opening.

The second duration D2 is adjustable analog or digital. It is for example between 10 seconds and 2 minutes. It is for example of the order of 1 minute, so that any alert is deleted if a person identifies themselves by the central cancellation device 34.

• soit un lecteur de badge à contact, par exemple de type à lecture de bande magnétique,
• soit un lecteur de badge à courte distance, par exemple de type RFID, ou NFC,
• soit un lecteur sans fil adapté à être associé à un dispositif électronique sans fil mobile, tel qu'un téléphone mobile, une montre connectée, un badge (carte électronique, porte clef)
• soit un clavier, par exemple de type à touche ou tactile ou autre,
• soit une surface tactile ou écran tactile, sur laquelle l'utilisateur doit effectuer un geste ou une forme prédéterminée pour activer ledit dispositif d'annulation,
• soit un lecteur biométrique, par exemple de type à reconnaissance d'empreinte de doigt, ou à reconnaissance de la rétine de l'œil, ou à reconnaissance vocale, ou à reconnaissance faciale par caméra, ou tout autre lecteur biométrique connu.

Typically, the central cancellation device 34 is:

• either a contact badge reader, for example of the magnetic strip reading type,
• either a short distance badge reader, for example of the RFID or NFC type,
• either a wireless reader adapted to be associated with a mobile wireless electronic device, such as a mobile telephone, a connected watch, a badge (electronic card, key ring)
• either a keyboard, for example of the key or touch type or other,
• either a touch surface or touch screen, on which the user must perform a gesture or a predetermined shape to activate said cancellation device,
• either a biometric reader, for example of the fingerprint recognition type, or recognition of the retina of the eye, or with voice recognition, or with facial recognition by camera, or any other known biometric reader.

The “wireless” connection of the wireless player uses a medium or long distance wireless transmission means (for example “Bluetooth” or “Bluetooth Low Energy”).

Thus, in the case of an inhibition device 22 of the volumetric sensor type and a central cancellation device 34 or a cancellation device 24 (described from the Figure 3 ) of the wireless reader type, the user no longer has to carry out any intervention upon entering the premises (no deactivation or identification): the alarm center 30 is completely autonomous and determines by itself the nature of the entry (valid intrusion or not).

Advantageously, this wireless technology is able to estimate a distance between the central cancellation device 34 and the wireless electronic device which is worn by the user.

• en fonction d'une puissance d'émission du dispositif électronique sans fil, éventuellement précédemment enregistrée, et/ou
• en fonction de la fréquence d'émission du dispositif électronique sans fil, et/ou
• en fonction d'une table prédéterminée pour ledit dispositif électronique sans fil.

For example, the distance is determined:

• depending on a transmission power of the wireless electronic device, possibly previously recorded, and/or
• depending on the transmission frequency of the wireless electronic device, and/or
• according to a predetermined table for said wireless electronic device.

In particular, the identification can be validated (i.e. central cancellation device 34 activated) if said distance is less than a cancellation distance.

This cancellation distance is a parameter of the central cancellation device 34 or cancellation device 24, i.e. a parameter of the alarm sensor 20 and/or the alarm central 30.

This cancellation distance is for example predetermined, and for example less than 5 meters, and preferably less than 2 meters. This avoids cancellation of remote detection of the alarm sensor 20, without monitoring the opening and possible intruders.

This cancellation distance can be adjusted for each application, or even set to a value which deactivates said distance condition between the central cancellation device 34 and the wireless electronic device, for example for a premises with public access in which at least one authorized person is inside the premises.

The cancellation distance is for example set to a value less than the range of the wireless electronic device. The wireless electronic device uses a wireless transmission means which has a range, that is to say a distance from which it is no longer detectable, i.e. a distance from which the cancellation device 24 or central override device 34 will not be able to detect it.

We can therefore either set the cancellation distance to a value less than this range, which makes it possible to define a cancellation distance by the alarm system, or by the range itself, which amounts to setting the distance d cancellation at a very high value. In the latter case, if the central cancellation device 34 or cancellation device 24 (described from the Figure 3 ) does not detect the wireless electronic device for a second duration D2 after the opening event, the electronic unit 23 can provide a detection signal depending on the validity of the other conditions. In other words, if the cancellation device 24 or central cancellation device 34 detects the wireless electronic device during the second duration D2 after the opening event, there is no detection signal.

Alternatively, the wireless electronic device communicates an identifier to the cancellation device 24 or central cancellation device 34, and the latter determines the cancellation distance according to this identifier.

Thus, if several wireless electronic devices are used, each of them may have a different cancellation distance.

Advantageously, the wireless reader is close to the alarm sensor 20, such that the distance between the wireless reader and the wireless electronic device is substantially equal to the distance between the alarm sensor 20 and the electronic device wireless.

In addition, the wireless electronic device is optionally programmable remotely by its wireless connection with the control unit 30. For example, the range of the wireless electronic device can be adjusted by modifying the transmission power. The range of the wireless electronic device can then be adjusted to a value slightly greater than the cancellation distance in order to minimize the power consumption of the wireless electronic device.

Thus, the authorized person opens the opening 1 from the outside to enter the room must quickly activate the central cancellation device 34 or the cancellation device 24 inside the room, that is to say before the end of the second duration D2 which begins at the time of the opening event. This action on the central cancellation device 34 cancels the generation of the alert by the alarm central 30. Optionally, it is a wireless electronic device associated with the cancellation device which must quickly activate the cancellation device. cancellation of central unit 34 or the cancellation device 24, before the end of the second duration D2, which amounts to making an automatic cancellation activation.

In addition, the alarm sensor 20 and/or the central alarm 30 is designed to be in energy saving standby mode for the majority of its operation.

In fact, the opening sensor 21 and/or the inhibition device 22 are permanently active and are capable of causing the electronic unit 23 to exit the alarm sensor 20, the central electronic unit 33 from the central alarm 30, and the cancellation device 24 or the central electronic device 34, from standby mode to awake mode. After a delay of inaction after a last event, the electronic unit 23 and the cancellation device 24, 34 automatically return to standby mode.

Thanks to this operation, the alarm sensor 20 and/or the alarm center 30 consumes little energy.

The central alert device 35 is the device which generates the alert to notify and/or inform one or more third parties that the premises have been the victim of an intrusion.

We therefore understand by "alert" a signal which is issued to warn people that an intrusion (i.e. an unauthorized intrusion, i.e. unidentified) has taken place and that therefore checks and/or an intervention must be carried out at the faster.

• soit une sirène qui génère un son et/ou un signal lumineux,
• soit un organe de communication adapté pour transmettre l'alerte à un dispositif distant, tel qu'un téléphone,
• soit une combinaison de ces dispositifs, auquel cas, l'alerte est composée d'une première alerte générée par une sirène et d'une seconde alerte générée par l'organe de communication ; avantageusement, la seconde alerte est générée après la première alerte, par exemple après l'expiration un délai entre 10 secondes et 1 minute pour éventuellement laisser encore du temps à un utilisateur d'actionner le dispositif d'annulation de centrale 34 avant de transmettre la seconde alerte au dispositif distant (intervention d'un agent de sécurité).

Typically, this central alert device 35 is:

• either a siren which generates a sound and/or a light signal,
• either a communication device adapted to transmit the alert to a remote device, such as a telephone,
• either a combination of these devices, in which case, the alert is composed of a first alert generated by a siren and a second alert generated by the communication device; advantageously, the second alert is generated after the first alert, for example after the expiration of a delay between 10 seconds and 1 minute to possibly still allow time for a user to activate the central cancellation device 34 before transmitting the second alert to the remote device ( intervention of a security agent).

• soit filaire, de type Ethernet, ADSL, fibre optique, câble,
• soit sans fil, de type WiFi, GSM, un réseau d'objets connectés (e.g. réseau LoRa, réseau SIGFOX).

The communication unit transmits, for example, the alert via an external link 39 (alarm system-remote device link, ie alarm system-user or alarm system-security agent):

• either wired, Ethernet type, ADSL, optical fiber, cable,
• either wireless, WiFi, GSM type, a network of connected objects (eg LoRa network, SIGFOX network).

In particular, the central alert device 35 can for example send an SMS or a notification to a remote device such as a mobile phone. Such notification or “push” notification uses a notification server which is an intermediary between the central alert device and the remote device. This notification server is not shown in the figures for reasons of simplification.

In addition, the central alert device 35 can also transmit via the communication unit information messages, different from alerts, to inform a person of entry/exit events from the premises. These information messages therefore differ from alerts which correspond to an unauthorized intrusion.

The alarm center 30 according to this first embodiment is advantageously integrated into a single control unit box 38.

• un premier module de capteur d'alarme 20 intégrant le capteur d'ouverture 21 et le dispositif d'inhibition 22, formé d'un seul ou deux boîtiers 28, et
• un deuxième module de centrale d'alarme 30 intégrant le dispositif d'annulation de centrale 34 et le dispositif d'alerte de centrale 35, formé d'un seul boîtier 38.

Thus, according to this first embodiment, the alarm system 10 advantageously comprises two modules:

• a first alarm sensor module 20 integrating the opening sensor 21 and the inhibition device 22, formed of a single or two boxes 28, and
• a second alarm center module 30 integrating the center cancellation device 34 and the center alert device 35, formed from a single housing 38.

Each of these modules and/or boxes can then be small, which facilitates installation.

Advantageously, the first module is placed on the fixed or mobile part of the opening and the second module is placed near the opening on the wall (for example at arm's height in order to be accessible so that the authorized person can easily activate alert cancellation). If the inhibition device 22 is a push button, the first module will be placed in the lower part, at arm's height in order to be accessible, otherwise the first module will preferably be placed in the upper part to be barely visible.

Compared to known alarm systems, the alarm center 30 of this system can remain in active mode and the protection is permanent. Thanks to this alarm system 10, the alert can be sent directly to the security agent concerned, which reduces intervention time.

There Figure 3 shows an alarm system 10 comprising an alarm sensor 20 for opening and an alarm center 30 according to a second embodiment of the invention.

• un capteur d'ouverture 21 qui détecte un événement d'ouverture de l'ouvrant 1,
• un dispositif d'inhibition 22 qui détecte la présence d'une personne dans l'espace intérieur à proximité de l'ouvrant 1, et
• une unité électronique 23 connectée au capteur d'ouverture 21 et au dispositif d'inhibition 22 et qui génère un signal de détection.

The alarm sensor 20 comprises the same elements as in the first embodiment, namely:

• an opening sensor 21 which detects an opening event of the opening 1,
• an inhibition device 22 which detects the presence of a person in the interior space near the opening 1, and
• an electronic unit 23 connected to the opening sensor 21 and to the inhibition device 22 and which generates a detection signal.

• un dispositif d'annulation 24, équivalent du dispositif d'annulation de centrale 34 du premier mode de réalisation. Ce dispositif d'annulation 24 est ainsi adapté pour être activé par l'identification de la personne.

The alarm sensor 20 of this second embodiment additionally comprises:

• a cancellation device 24, equivalent to the central cancellation device 34 of the first embodiment. This cancellation device 24 is thus adapted to be activated by the identification of the person.

The cancellation device 24 can also be one of the type listed previously in the first embodiment (for the central cancellation device 34).

As previously, this alarm sensor 20 takes into account the opening event detected by the opening sensor 21 only if no presence has been detected by the inhibition device 22 during the first duration D1 preceding the opening event.

Thus, all opening events caused by a person located in the interior space of the room are inhibited or suppressed.

Thanks to this alarm sensor 20 combining an opening sensor, an inhibition device, and a cancellation device, the false detection rate is very greatly reduced.

This alarm sensor 20 can then be connected by an internal wired or wireless link 29 to an alarm center 30. This alarm center 30 can be an alarm center as currently known, or a central alarm. simplified alarm 30, and adapted only to the present alarm sensor 30 as shown in Figure 3 .

The simplified alarm unit 30 of this second embodiment does not include a unit cancellation device 34, compared to that of the first embodiment.

The alarm center 30 therefore comprises a central alert device 35 which is capable of generating the alert to notify or inform one or more third parties that the premises was the victim of an intrusion. In addition, this alarm center 30 takes into account the detection signal and possibly the activation information of the cancellation device 24, provided by the alarm sensor 20 via the internal link 29.

The central alert device 35 can also be one of the type listed previously in the first embodiment, and with operation of the same type.

According to a first variant, the cancellation device 24 is connected to the electronic unit 23 which itself cancels the alert if the cancellation device 24 has been activated for a second duration D2 after the event opening.

According to a second variant, the cancellation device 24 transmits its activation to the alarm center 30 directly or indirectly by the electronic unit 23 to a central electronic unit 33, which then cancels the alert if the cancellation device 24 was activated for a second duration D2 after the opening event. This second variant offers more security because the cancellation of the alert is carried out in the alarm center 30, which can be easily hidden in the premises and difficult to access to an intruder who may wish to destroy it.

• un premier module de capteur d'alarme 20 intégrant le capteur d'ouverture 21, le dispositif d'inhibition 22, l'unité électronique 23, et le dispositif d'annulation 24, formé d'un seul ou deux boîtiers 28, et
• un deuxième module de centrale d'alarme 30 intégrant le dispositif d'alerte de centrale 35, formé d'un seul boîtier 38.

Thus, according to this second embodiment, the alarm system 10 advantageously comprises two modules:

• a first alarm sensor module 20 integrating the opening sensor 21, the inhibition device 22, the electronic unit 23, and the cancellation device 24, formed of a single or two boxes 28, and
• a second alarm center module 30 integrating the center alert device 35, formed from a single box 38.

Each of these modules and/or boxes can then be small, which makes installation easier.

Advantageously, the first module is placed on the fixed or mobile part of the opening, and the second module can be placed anywhere in the room or nearby.

The first alarm sensor module 20 can be a generic module which can be connected by the internal link 29 to any type of alarm center 30 if it integrates the cancellation of the detection signal or to the alarm center simplified as explained above.

Compared to known alarm systems, the alarm center 30 of this system can remain in active mode and the protection is permanent. Thanks to this alarm system 10, the alert can be sent directly to the security agent concerned, which reduces intervention time.

Advantageously, the cancellation device 24 is a wireless reader associated (connected by a wireless link) with a wireless, mobile electronic device. The wireless connection uses a medium or long distance wireless transmission means (for example “Bluetooth” or “Bluetooth Low Energy”).

In the case of an inhibition device 22 of the volumetric sensor type and a central cancellation device 34 or a cancellation device 24 of the wireless reader type, the user no longer has any intervention to be carried out upon entering the premises (no deactivation or identification): the alarm center 30 is completely autonomous and determines by itself the nature of the entry (valid intrusion or not).

There Figure 4 shows an alarm system 10 comprising an alarm sensor 20 for opening and an alarm center 30 according to a third embodiment of the invention.

• un capteur d'ouverture 21 qui détecte un événement d'ouverture de l'ouvrant 1,
• un dispositif d'inhibition 22 qui détecte la présence d'une personne dans l'espace intérieur à proximité de l'ouvrant 1,
• une unité électronique 23 connectée au capteur d'ouverture 21 et au dispositif d'inhibition 22 et qui génère un signal de détection, et
• un dispositif d'annulation 24 qui est activé par l'identification de la personne.

The alarm sensor 20 comprises the same elements than in the second embodiment, namely:

• an opening sensor 21 which detects an opening event of the opening 1,
• an inhibition device 22 which detects the presence of a person in the interior space near the opening 1,
• an electronic unit 23 connected to the opening sensor 21 and to the inhibition device 22 and which generates a detection signal, and
• a cancellation device 24 which is activated by the identification of the person.

• un dispositif d'alerte 25, équivalent du dispositif d'alerte de centrale 35 du deuxième mode de réalisation, et est adapté à générer l'alerte pour notifier ou informer une ou des tierces personnes que le local a été victime d'une intrusion.

The alarm sensor 20 of this second embodiment additionally comprises:

• an alert device 25, equivalent to the central alert device 35 of the second embodiment, and is adapted to generate the alert to notify or inform one or more third parties that the premises have been the victim of an intrusion.

The alert device 25 can be one of the type listed previously in the first or second embodiments (for the central alert device 35), and with operation of the same type.

Thus, the alarm sensor 20 cancels the alert if the cancellation device 24 has been activated for a second duration D2 after the opening event, and generates the possible alert.

As previously, this alarm sensor 20 takes into account the opening event detected by the opening sensor 21 only if no presence has been detected by the inhibition device 22 during the first duration D1 preceding the opening event.

Thus, all opening events caused by a person located in the interior space of the room are inhibited or suppressed.

Thanks to this alarm sensor 20 combining an opening sensor, an inhibition device, a device cancellation, and an alert device, the false detection rate is greatly reduced.

Finally, the alarm sensor 20 of this third embodiment is in fact a complete and autonomous alarm system 10, because it integrates the essential function of the alarm center 30, that is to say the device alert which notifies the intrusion to a third person, for example located at a distance from the premises.

Advantageously, this sensor or alarm system 10 is integrated into a single housing, which facilitates installation.

Compared to known alarm systems, the alarm center 30 of this system can remain in active mode and the protection is permanent. Thanks to this alarm system 10, the alert can be sent directly to the security agent concerned, which reduces intervention time.

There Figure 5 shows an alarm system 10 comprising an alarm sensor 20 for opening and an alarm center 30 according to a fourth embodiment of the invention.

• un capteur d'ouverture 21 qui détecte un événement d'ouverture de l'ouvrant 1,
• un dispositif d'inhibition 22 qui détecte la présence d'une personne dans l'espace intérieur à proximité de l'ouvrant 1, et
• une unité électronique 23 connectée au capteur d'ouverture 21 et au dispositif d'inhibition 22 et qui génère un signal de détection.

The alarm sensor 20 comprises the same elements as in the first embodiment, namely:

• an opening sensor 21 which detects an opening event of the opening 1,
• an inhibition device 22 which detects the presence of a person in the interior space near the opening 1, and
• an electronic unit 23 connected to the opening sensor 21 and to the inhibition device 22 and which generates a detection signal.

In this fourth embodiment, the inhibition device 22 is connected by a second internal wired or wireless connection 29 ₂ to the electronic unit 23 of the alarm sensor 20.

This inhibition device 22 can be of any type, as mentioned in the first embodiment. For example, the inhibition device 22 is a wireless volumetric sensor or a wireless camera which makes it possible to detect the presence of a person in the interior space near the opening 1.

Thanks to this arrangement, the alarm sensor 20 comprises a sensor housing 28 which only includes the opening sensor 21 and the electronic unit 23. This sensor housing 28 can be smaller in size and the installation is more easy. In addition, the inhibition device 22 is possibly already available, and thus this embodiment is less expensive.

As previously, this alarm sensor 20 takes into account the opening event detected by the opening sensor 21 only if no presence has been detected by the inhibition device 22 during the first duration D1 preceding the opening event.

Thus, all opening events caused by a person located in the interior space of the room are inhibited or suppressed.

Thanks to this alarm sensor 20 combining an opening sensor 21 and an inhibition device 22 via a second internal connection 29 ₂ , the false detection rate is always very greatly reduced.

There Figure 6 shows an alarm system 10 comprising an alarm sensor 20 for opening and an alarm center 30 according to a fifth embodiment of the invention.

This fifth embodiment differs from the fourth embodiment and the previous ones in that the inhibition device 22 is able to also perform the function of the cancellation device 24 of the second and third embodiments, or of the cancellation device of central 34 of the first embodiment.

Structurally, the inhibition device 22 is connected by a second internal wired or wireless link 29 ₂ to the electronic unit 23 of the alarm sensor 20, and by a third internal wired or wireless link 29 ₃ to the unit. electronics of central 33 of alarm central 30.

This inhibition device 22 is thus adapted to at least determine the presence of a person in the interior space near the opening 1, but also to be activated by the identification of the person.

For example, if this inhibition device 22 is a camera, it can detect the presence of a person near the opening 1, but also identify whether this person is an authorized person so that the central electronic unit 33 cancels the alert.

The alarm system 10 of this embodiment has the advantages and effects of the fourth embodiment.

As previously, this alarm sensor 20 takes into account the opening event detected by the opening sensor 21 only if no presence has been detected by the inhibition device 22 during the first duration D1 preceding the opening event.

Thus, all opening events caused by a person located in the interior space of the room are inhibited or suppressed.

Thanks to this alarm sensor 20 combining an opening sensor 21 and an inhibition device 22 via a second internal connection 29 ₂ , the false detection rate is always very greatly reduced.

Thanks to its inhibition device 22 which integrates the function of the cancellation device, the alarm system is simpler to install and it is less expensive.

There Figure 7 shows an alarm system 10 comprising an alarm sensor 20 for opening and an alarm center 30 according to a sixth embodiment of the invention.

In this sixth embodiment, the cancellation device 24 is connected by a second internal wired or wireless connection 29 ₂ to the electronic unit 23 of the alarm sensor 20.

This cancellation device 24 can be of any type, as cited in the first embodiment (central cancellation device 34) or in the following embodiments. For example, it is a wireless camera.

Structurally, the cancellation device 24 is connected by a second internal wired or wireless link 29 ₂ to the electronic unit 23 of the alarm sensor 20, and possibly by a third internal wired or wireless link 29 ₃ to the central electronic unit 33 of the alarm central unit 30.

Thanks to this arrangement, the alarm sensor 20 comprises a sensor housing 28 which includes the opening sensor 21, the inhibition device 22 and the electronic unit 23. This housing is of reduced size, which facilitates its installation near the opening 1. In addition, the cancellation device 24 is possibly already available in the room, and thus this embodiment is less expensive. The alarm center 30 can also be simplified, with a central unit box 38 of very small size, easily concealable.

As previously, this alarm sensor 20 takes into account the opening event detected by the opening sensor 21 only if no presence has been detected by the inhibition device 22 during the first duration D1 preceding the opening event.

Thus, all opening events caused by a person located in the interior space of the premises are inhibited or suppressed.

Thanks to this alarm sensor 20 combining an opening sensor 21, an inhibition device 22 and a cancellation device 24 by a second internal connection 29 ₂ , such as a facial recognition camera, the identification of the person authorized can be automated, without its manual intervention. The false detection rate is always greatly reduced, and the use of the system is simplified.

In the various embodiments presented, when the cancellation device 24 is activated by the identification of the person, said cancellation device 24 optionally generates and provides an identification signal.

The term “providing an identification signal” means providing a non-zero identification signal; which means that the identification of a person was carried out by the cancellation device 24; that is to say, emit or transmit an identification signal. This identification signal can take several forms.

• Soit l'unité électronique 23 génère le signal de détection si cette identification n'est pas validée (dispositif d'annulation non activé) pendant la deuxième durée D2 après l'évènement d'ouverture ;
• Soit l'électronique de centrale 33 reçoit le signal d'identification et annule l'alerte si l'identification n'est pas validée pendant la deuxième durée D2 après l'évènement d'ouverture.

According to a first variant, the identification signal comprises a code. The electronic unit 23 of the alarm sensor 20 or the central electronic unit 33 or any other electronic unit of the alarm system receives this identification signal and performs a comparison with one or more codes corresponding to the persons authorized to validate the identification:

• Either the electronic unit 23 generates the detection signal if this identification is not validated (cancellation device not activated) during the second duration D2 after the opening event;
• Either the central electronics 33 receives the identification signal and cancels the alert if the identification is not validated during the second duration D2 after the opening event.

According to a second variant, the identification signal is validated identification information, the identification of the authorized person being carried out directly by the cancellation device 24.

In the various embodiments presented, when the opening 1 is a window, no opening from the outside is normally expected (except intrusion). We can therefore use variants without any cancellation device 24.

Thus, the six embodiments of the alarm system 10 presented above include similar or identical elements, distributed differently in various boxes or modules. Furthermore, these embodiments all operate identically. The alarm system 10 remains permanently active, which avoids forgetting to activate it when leaving the room. In addition, the false alarm rate is very reduced thanks to the combination of the opening sensor and the inhibition device.

Compared to known alarm systems, the alarm center 30 of this system can remain in active mode and the protection is permanent. Thanks to this alarm system 10, the alert can be sent directly to the security agent concerned, which reduces intervention time.

The alarm systems 10 according to the present invention are therefore used according to a method illustrated in the diagram of the Figure 9 differently from a method of using an alarm system of the prior art illustrated in the diagram of the figure 8 .

1. a) le système d'alarme 10 situé dans le local à protéger transmet l'alerte via la liaison externe 39 vers un gestionnaire de télésurveillance 100,
2. b) le gestionnaire de télésurveillance 100 entre en contact avec une personne autorisée 103, par exemple par un appel téléphonique 101, afin de vérifier s'il ne s'agit pas d'une fausse alerte,
3. c) si la personne autorisée n'a pas d'explication à l'alerte générée, le gestionnaire de télésurveillance transmet l'alerte à un agent de sécurité 110 situé dans une région dont dépend ledit système d'alarme via une autre liaison externe 102, et
4. d) l'agent de sécurité 110 reçoit l'alerte transmise à l'étape c) par le gestionnaire de télésurveillance et intervient sur le local dudit système d'alarme 10.

Indeed, an alarm system 10 according to the prior art represented in figure 8 is used according to a process which comprises, following the generation of an alert by the alarm system, the following successive steps ( figure 8 ):

1. a) the alarm system 10 located in the premises to be protected transmits the alert via the external link 39 to a remote monitoring manager 100,
2. b) the remote monitoring manager 100 contacts an authorized person 103, for example by a telephone call 101, in order to check whether it is not a false alert,
3. c) if the authorized person has no explanation for the alert generated, the remote monitoring manager transmits the alert to a security agent 110 located in a region on which said alarm system depends via another external link 102 , And
4. d) the security agent 110 receives the alert transmitted in step c) by the remote monitoring manager and intervenes on the premises of said alarm system 10.

This process wastes time before the intervention is launched.

1. a) le système d'alarme 10 situé dans le local transmet l'alerte à un agent de sécurité 110 situé dans une région dont dépend ledit système d'alarme, et
2. b) l'agent de sécurité 110 reçoit l'alerte transmise à l'étape a) et intervient sur le local dudit système d'alarme 10.

Thus, the alarm system 10 according to the invention having a very reduced number of false alarms, it is used according to a method which comprises, following the generation of an alert by the alarm system 10, the following successive steps ( Figure 9 ):

1. a) the alarm system 10 located in the premises transmits the alert to a security agent 110 located in a region on which said alarm system depends, and
2. b) the security agent 110 receives the alert transmitted in step a) and intervenes on the premises of said alarm system 10.

This process is faster, and reduces the time between alert generation and intervention.

Optionally, the method further comprises a step in which:
c) the alarm system 10 transmits the alert to the authorized person 103, for example after having sent said alert to the security agent 110.

Said alert is for example transmitted to a mobile electronic device of the authorized person, such as his mobile phone, by an SMS or a “push” notification.

• soit directement entre ledit moyen de la personne autorisée 103 et l'agent de sécurité 110,
• soit indirectement par une première transmission d'annulation dudit moyen vers le système d'alarme 10, puis le relais de cette annulation par une seconde transmission du système d'alarme 10 vers l'agent de sécurité 110.

In addition, the authorized person 103 possibly has a means suitable for communicating to the security agent 110 and for canceling the alert transmitted in step a). This cancellation can be made:

• either directly between said means of the authorized person 103 and the security agent 110,
• or indirectly by a first transmission of cancellation from said means to the alarm system 10, then the relay of this cancellation by a second transmission from the alarm system 10 to the security agent 110.

Thanks to this means, the cost of the intervention can be reduced.

This means is for example said mobile electronic device of the authorized person 103 in which an application has been installed to carry out this alert cancellation. This application can optionally keep a history of all alarm system 10 alerts and messages.

Variant adjustments of the cancellation distance of the cancellation device 24 or of the central cancellation device 34 will now be described in more detail.

• si la distance d'annulation est trop faible, le dispositif d'annulation 24 peut avoir des difficultés à détecter et/ou identifier une personne pendant son entrée dans le local ; et
• si la distance d'annulation est trop grande, il existe un risque que la personne utilisateur laisse en permanence son dispositif électronique sans fil à portée du dispositif d'annulation 24 (à une distance inférieure à la distance d'annulation) après son entrée.

It can be difficult to determine an adequate value for the cancellation distance in advance. Particularly in the case of the use of a wireless electronic device in connection with the cancellation device 24 of the alarm sensor 20 or the central cancellation device 34 of the alarm central 30:

• if the cancellation distance is too small, the cancellation device 24 may have difficulty detecting and/or identifying a person during their entry into the premises; And
• if the cancellation distance is too great, there is a risk that the user will permanently leave their wireless electronic device within range of the cancellation device 24 (at a distance less than the cancellation distance) after entry.

The cancellation device 24 of the present variant records rest distances which are distances between the wireless electronic device and the cancellation device 24 which are preserved (which remain substantially constant) for a duration greater than a third duration D3 . This third duration D3 is for example a duration of 5 minutes or 10 minutes.

The cancellation device 24 then automatically adjusts the cancellation distance to a value less than all the recorded rest distances. The cancellation distance is for example set to a value of 20% below the minimum rest distance.

The cancellation device 24 will eventually regularly delete the oldest rest distances. For example, any rest distance recorded for more than 2 weeks or more than 1 month will be deleted.

Thus, thanks to the preceding provisions, the cancellation device 24 is capable of automatically reducing and increasing the cancellation distance, that is to say automatically adapting the cancellation distance.

Additionally, the cancellation device may also identify different rest distances for each wireless electronic device, and therefore a cancellation distance for each wireless electronic device.

Additionally, the cancellation distance can be limited to a minimum value, minimum cancellation distance to guarantee sufficiently effective detection of the cancellation device 24. For example, the minimum cancellation distance is 1 meter.

Variants of management (monitoring process) of one or more wireless electronic devices by the cancellation device 24 or the central cancellation device 34 will now be described in more detail.

The use of a wireless electronic device in connection with the cancellation device 24 of the alarm sensor 20 or the central cancellation device 34 of the alarm center 30 may pose a problem if the user leaves this electronic device without wire near the alarm sensor or the alarm control panel, in a zone called cancellation zone, for example at a distance less than the cancellation distance. In this case, the cancellation device 24 would be systematically activated, which systematically deactivates the detection signal, which permanently deactivates the alarm sensor and/or the alarm center and cancels all protection.

To overcome this difficulty, we temporarily deactivate a wireless electronic device that remains in the cancellation zone for too long. However, this deactivation must be certain, otherwise there is a risk of false alarms. This management or process of monitoring wireless electronic devices is explained with a single electronic device, but is immediately generalized to several wireless electronic devices.

• si le dispositif électronique sans fil est détecté pendant une durée supérieure à une quatrième durée D4 ou détecté à une distance inférieure à la distance d'annulation pendant une durée supérieure à une quatrième durée D4, le dispositif électronique sans fil est désactivé, ce qui signifie qu'il ne peut plus activer le dispositif d'annulation 24 (temporairement), et
• si le dispositif électronique sans fil n'est pas détecté, le dispositif électronique sans fil est activé, ce qui signifie qu'il peut activer le dispositif d'annulation.

According to a first variant of this monitoring process:

• if the wireless electronic device is detected for a duration greater than a fourth duration D4 or detected at a distance less than the distance cancellation for a period greater than a fourth duration D4, the wireless electronic device is deactivated, which means that it can no longer activate the cancellation device 24 (temporarily), and
• if the wireless electronic device is not detected, the wireless electronic device is activated, which means it can activate the override device.

The cancellation distance is a parameter of the alarm sensor 20 and/or the alarm center 30.

The fourth duration is for example 10 minutes, which means that the wireless electronic device is installed for a long time.

• si le dispositif électronique sans fil est détecté ou détecté à une distance inférieure à la distance d'annulation, on incrémente un compteur,
• si le compteur est supérieur à une valeur seuil (par exemple, une valeur seuil de 2 ou 3), le dispositif électronique est désactivé, ce qui signifie qu'il ne peut plus activer le dispositif d'annulation
• si le dispositif électronique sans fil n'est pas détecté, le compteur est remis à une valeur initiale (par exemple zéro) et le dispositif électronique sans fil est activé, ce qui signifie qu'il peut activer le dispositif d'annulation.

According to a second variant of this monitoring process, more or less equivalent to the previous one, the cancellation device 24, 34 carries out analyzes of the presence of a wireless electronic device, repetitively with an analysis period, and at each analysis :

• if the wireless electronic device is detected or detected at a distance less than the cancellation distance, a counter is incremented,
• if the counter is greater than a threshold value (for example, a threshold value of 2 or 3), the electronic device is deactivated, meaning that it can no longer activate the override device
• if the wireless electronic device is not detected, the counter is reset to an initial value (e.g. zero) and the wireless electronic device is activated, meaning that it can activate the override device.

According to this variant, the cancellation device 24, 34 can vary the analysis period. In particular, after detection of the opening event, the analysis period can be set to a first value, for example short, for example 2 minutes, then after a predetermined number of analyses, the analysis period can be set to a second value greater than the first value, for example 10 minutes.

In this way, the cancellation device 2 4 observes more precisely the presence of the wireless electronic device after the opening event, which corresponds to a moment when the wireless electronic device moves.

Variants of an inhibition device 22 of the volumetric sensor type 220 will now be described in more detail, with reference to the figures 10 and 11 , in which the volumetric sensor is represented in an exaggeratedly large schematic manner to discern details.

• un système optique 221 qui divise la zone de détection en alternativement en des zones actives et inactives,
• un détecteur infrarouge 222 aligné avec le système optique 221 et qui fournit un signal de mouvement, et
• une électronique de traitement 223 qui détecte les variations dans ce signal, lesdites variations étant significatives d'un mouvement d'une personne dans ladite zone de détection.

As already explained, a volumetric sensor 220 comprises:

• an optical system 221 which divides the detection zone alternately into active and inactive zones,
• an infrared detector 222 aligned with the optical system 221 and which provides a movement signal, and
• processing electronics 223 which detects variations in this signal, said variations being significant of a movement of a person in said detection zone.

More precisely, the infrared detector 222 is composed of two detection elements 222a, 222b comprising a pyroelectric material sensitive to the infrared optical domain. The difference made between a first signal coming from the first detection element 222a and a second signal coming from the second detection element 222b is for example made by the processing electronics 223 which then provides the movement signal.

• un premier plan P1, dans lequel l'alternance des zones actives et inactives a une densité relativement importante (plus de dix, et souvent plus de vingt alternances) ce qui donne une bonne sensibilité à un mouvement transversal par rapport au capteur volumétrique, ce premier plan P1 correspondant à un plan perpendiculaire au détecteur infrarouge 222 et passant par les deux éléments de détection 222a, 222b, et
• un second plan P2 perpendiculaire au premier plan P1, dans lequel l'alternance des zones actives et inactives a une densité relativement faible (inférieure à dix alternances), ce qui donne un moins bonne sensibilité à un mouvement longitudinal par rapport au capteur volumétrique (i.e. dans la direction d'éloignement du capteur), ce second plan P2 correspondant à un plan perpendiculaire au détecteur infrarouge 222 et passant entre les deux éléments de détection 222a, 222b.

Generally, the infrared detector 222 has the following properties:

• a first plane P1, in which the alternation of active and inactive zones has a relatively high density (more than ten, and often more than twenty alternations) which gives good sensitivity to a transverse movement in relation to the volumetric sensor, this first plane P1 corresponding to a plane perpendicular to the infrared detector 222 and passing through the two detection elements 222a, 222b, and
• a second plane P2 perpendicular to the first plane P1, in which the alternation of active and inactive zones has a relatively low density (less than ten alternations), which gives less good sensitivity to a longitudinal movement compared to the volumetric sensor (ie in the direction away from the sensor), this second plane P2 corresponding to a plane perpendicular to the infrared detector 222 and passing between the two detection elements 222a, 222b.

In the figures, the first plane P1 is defined by the points A, D, E, and the second plane P2 is defined by the points A, B, C.

Usually, the first plane P1 is positioned substantially parallel to the ground or the floor of the room (i.e. horizontal) relative to the ground, and the second plane P2 is positioned substantially perpendicular to the ground (i.e. vertical).

According to a first variant, not shown in the figures, the inhibition device 22 is a volumetric sensor placed as usual, that is to say with its first plane P1 substantially parallel to the floor of the room, and its second plane P2 substantially perpendicular to the ground.

According to a second variant, shown in the figures, the inhibition device 22 is a volumetric sensor 220 placed with its first plane P1 (moreover high density motion detection) substantially perpendicular to the floor of the room, for example at plus or minus 20° relative to a perpendicular to the floor. Thus, this first plane P1 is substantially vertical. In addition, its second plane P2 is usually perpendicular to the first plane P1. Thus, the second plane is substantially horizontal (with the same angular range).

Thanks to this positioning, the inhibition device 22 is more sensitive to detect a person who is approaching or moving away from said inhibition device 22.

In addition, the inhibition device 22 can be directed towards the interior handle 4 of the opening 1 or towards an area close to said handle 4. The direction D of the volumetric sensor 22 is defined by the intersection of the first plane P1 and the second plane P2, and therefore corresponds to an orientation of its infrared detector 222 and its optical system 221.

Thanks to this orientation, the inhibition device 22 detects the hand of the person approaching the interior handle 4 of the opening 1.

Furthermore, the volumetric sensor 220 has for example in the latter case a first opening angle a1 in the first plane P1 less than 60°, and for example less than 45°, and possibly less than 20°.

Thanks to this first opening angle a1 in the first plane P1 is reduced compared to known sensors, and the inhibition device 22 detects more precisely the hand which approaches the interior handle 4.

On the other hand, the volumetric sensor 220 has for example a second opening angle a2 in the second plane P2 greater than 90°, and for example 120° or more.

This second opening angle a2 of the second plane P2 is therefore widened compared to known sensors, which allows detection over a large width of the handle and the opening 1.

Thus, this volumetric sensor 220 has reversed characteristics or use compared to known volumetric sensors. This volumetric sensor 220 effectively detects the movement of a person or the hand of a person who approaches or moves away from the opening 1 or the handle 4 of the opening. Thus, the detection zone is better targeted. Thus, the false detection rate is greatly reduced.

For example, the volumetric sensor 220 of the second variant further comprises a wall 224 positioned substantially perpendicular to the infrared detector 222, between the two detection elements 22a, 22b. This wall extends over a separation height moving away from said infrared detector 222. The wall 224 is for example a sheet of metal or plastic. This wall has a spatial masking effect for infrared rays.

If the first detection element 22a is located further from the opening 1 than the first detection element 22b, as shown in Figure 11 , the first signal will have a temporal variation before the second signal, when the hand passes, and the difference of the first and second signals will have a greater variation, which increases the sensitivity of the volumetric sensor 222 in the first plane P1.

For example, particularly in the case of a volumetric sensor with the wall cited above, the volumetric sensor will not include an optical system such as lenses, these lenses being replaced by the simple wall. The inhibition device thus produced will be more sensitive, more compact, more aesthetic and less expensive than known sensors.

Finally, the alarm system 10 according to the invention is permanently active, which avoids forgetting to activate it when leaving the premises.

In exceptional cases, however, it may be useful to be able to deactivate it temporarily, for example when frequent entries/exits are temporarily planned and the users do not wish to have to activate the cancellation device 24 at each entry, or do not wish to have to constantly carry a wireless electronic device which automatically performs this activation of the cancellation device 24.

The alarm sensor 20 and/or the alarm center 30 include deactivation means to carry out this temporary activation/deactivation. This action does not require identification of the person, as long as this action is carried out outside of any entry into the premises, i.e. carried out at a time not following such an entry. This means of deactivation can be a button. Optionally, this deactivation means is supplemented by an alert means which warns the user(s) that the alarm sensor 20 and/or the alarm center 30 is inactive, and that the premises are not protected. This alert means may be a visual indication (e.g. an LED) or an audible indication or an alert transmitted on the wireless electronic device(s) or an alert transmitted on one or more mobile telephones. Possibly, indications and/or alerts are regularly issued.

Claims (15)

1. An alarm sensor (20) for an opening (1) of a building area, said opening comprising a fixed part surrounding an opening and a mobile part suited for opening or closing said opening, where said opening is located between an interior space and an exterior space of the area and where said alarm sensor is suited to provide a detection signal and comprises:

   - an opening sensor (21) configured for detecting an opening event of the opening;

   - an inhibition device (22) configured for at least determining the presence of a person in the interior space near the opening;

   - a cancellation device (24) configured for being activated by the identification of a person; and

   - an electronic unit (23) configured for providing the detection signal according to the following conditions:
   if the opening sensor detected an opening event, then:

   a) if the inhibition device has detected a presence during a first time (D1) before the opening event,
   then we do not wait any activation of the cancellation device, and the electronic unit does not provide any detection signal,

   b) if the inhibition device did not detect a presence during a first time (D1) before the opening event,
   then, if the cancellation device was not activated during a second time (D2) after the opening event then the electronic unit provides a detection signal.
2. The alarm sensor according to claim 1, wherein the cancellation device (24) is a wireless reader suited for being wirelessly connected to a wireless electronic device.
3. The alarm sensor according to claim 2, wherein the wireless electronic device has an wireless emission means which has a range which is a maximum detection distance, and the cancellation device (24) sends to the wireless electronic device the adjustment value for said range of the wireless electronic device.
4. The alarm sensor according to claim 2 or claim 3, wherein the cancellation device (24) can be activated if it detects the presence of the wireless electronic device.
5. The alarm sensor according to claim 2 or claim 3, wherein the wireless reader estimates a distance between said wireless reader and the mobile wireless electronic device.
6. The alarm sensor according to claim 5, wherein the cancellation device (24) can be activated only if the distance is shorter than a cancellation distance.
7. The alarm sensor according to one of claims 2 to 6, wherein the cancellation device (24) performs a method of monitoring wireless electronic devices, during which:

   - if the wireless electronic device is detected during a time greater than a fourth time (D4), the wireless electronic device is deactivated, and

   - if the wireless electronic device is no longer detected, the wireless electronic device is activated.
8. The alarm sensor according to one of claims 2 to 7, wherein the cancellation device (24) performs a method of monitoring wireless electronic devices by wireless electronic device presence analysis, repetitively with a period of analysis, and during each analysis:

   - if the wireless electronic device is detected, a counter is incremented;

   - if the counter is over a threshold value, the electronic device is deactivated, which means that it can no longer activate the cancellation device;

   - if the wireless electronic device is not detected, the counter is reset to an initial value and the wireless electronic device is activated which means that it can activate the cancellation device.
9. The alarm sensor according to claim 8, wherein after the detection of the opening event, the analysis period is adjusted to a first value, then after a predetermined number of analyses, the analysis period is adjusted to a second value longer than the first value.
10. The alarm sensor according to one of claims 1 to 9, wherein the inhibition device (22) is a volumetric sensor which detects the movement of the person and which detects whether said person is going away from said inhibition device, and in which the electronic unit (23) provides the detection signal only if the presence detected by the inhibition device corresponds to a movement of said person away from said inhibition device.
11. The alarm sensor according to one of claims 1 to 10, wherein the inhibition device (22) is a volumetric sensor positioned such that a first plane (P1) is a plane substantially perpendicular to the opening and substantially perpendicular to the floor of the area, where said first plane (P1) is the plane of highest density of alternating activity and inactivity for the detection of movement.
12. The alarm sensor according to one of claims 1 to 11, wherein the inhibition device (22) is a volumetric sensor which is directed towards the inside handle of the opening (1) or a point located near said handle.
13. The alarm sensor according to one of claims 1 to 12, wherein the inhibition device (22) is a volumetric sensor which comprises two detection elements (222a; 222b) and a wall located between said detection elements.
14. An alarm system (10) for a building area comprising:

    - an alarm sensor (20) according to any one of claims 1 to 13; and

    - an alarm central unit (30) suited for receiving the detection signal coming from the alarm sensor and comprises an alert device (35) suited for generating an alert if a detection signal is received.
15. The alarm system according to claim 14, wherein the alarm sensor (20) and the alarm central unit (30) are combined in a single case.

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