EP2518709B1 - Dispositif de sécurisation contre le vol et procédé de reconnaissance d'interventions et d'accès non justifiés - Google Patents

Dispositif de sécurisation contre le vol et procédé de reconnaissance d'interventions et d'accès non justifiés Download PDF

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Publication number
EP2518709B1
EP2518709B1 EP20110164049 EP11164049A EP2518709B1 EP 2518709 B1 EP2518709 B1 EP 2518709B1 EP 20110164049 EP20110164049 EP 20110164049 EP 11164049 A EP11164049 A EP 11164049A EP 2518709 B1 EP2518709 B1 EP 2518709B1
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EP
European Patent Office
Prior art keywords
barrier
area
laser scanner
protection device
theft
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.)
Not-in-force
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EP20110164049
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German (de)
English (en)
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EP2518709A1 (fr
Inventor
Matthias Mezger
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Sick AG
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Sick AG
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Publication date
Application filed by Sick AG filed Critical Sick AG
Priority to EP20110164049 priority Critical patent/EP2518709B1/fr
Priority to US13/428,664 priority patent/US8907792B2/en
Priority to JP2012092626A priority patent/JP5619809B2/ja
Publication of EP2518709A1 publication Critical patent/EP2518709A1/fr
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Publication of EP2518709B1 publication Critical patent/EP2518709B1/fr
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    • 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
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier

Definitions

  • the invention relates to an anti-theft device and a method for detecting unauthorized interventions and access according to the Oberbergriff of claim 1 or 15.
  • This surveillance cameras are permanently installed, which monitor either a rigid field of view or, as in the case of dome cameras, a changing field of view.
  • the video surveillance images are either evaluated manually or attempts are made to use motion capturing software to detect thefts in the recorded image data at an early stage and to elucidate them.
  • the video technology has only a limited field of view, so that the camera usually randomly pivots the respective areas.
  • fuzzy images are delivered, and dangerous situations are not automatically detected, because a camera is not an active sensor, but only passively generates image data.
  • it may cause adverse effects Image quality due to shadowing, insufficient image changes, too weak pixel contrasts or too low image resolution come, so that an alarm triggering is omitted.
  • FIG. 6 It is known to monitor the access to valuable objects by means of a laser scanner.
  • a laser scanner is in FIG. 6 shown in a schematic sectional view.
  • a light beam 14 generated by a light emitter 12, for example a laser, which has individual light pulses is directed via light deflection units 16a-b into a monitoring plane 18 and there remitted from an optionally present object.
  • the remitted light 20 returns to the laser scanner 10 and is there detected via the deflection unit 16b and by means of a receiving optical system 22 by a light receiver 24, for example a photodiode.
  • the light deflection unit 16b is generally designed as a rotating mirror, which rotates continuously by driving a motor 26.
  • the respective angular position of the light deflection unit 16b is detected by an encoder 28.
  • the light beam 14 generated by the light emitter 12 thus passes over the monitoring plane 18 generated by the rotational movement. If a reflected light signal 20 received by the light receiver 24 is received from the monitoring plane 18, the angular position of the deflection unit 16b can be adjusted to the angular position of the deflection unit 16b Object in the monitoring level 18 are closed.
  • the transit time of the individual laser light pulses from their emission to the reception after reflection on the object in the monitoring plane 18 is determined. From the light transit time, the distance of the object from the laser scanner 10 is closed by using the speed of light. This evaluation takes place in an evaluation unit 30 which is connected to the light emitter 12, the light receiver 24, the motor 26 and the encoder 28. Thus, two-dimensional polar coordinates of all objects in the monitoring plane 18 are available via the angle and the distance. This information about object positions can be output via an interface 32.
  • a security device which consists of a series of posts surrounding a region to be protected.
  • the space between each two adjacent posts is monitored by a laser light barrier, so that a base recognizes whether someone penetrates into the area to be protected, and then triggers an alarm.
  • a signal generator With the help of a signal generator, a person can authorize himself and then pass between two posts, without triggering the alarm.
  • a laser beam is deflected all around by means of a rotating mirror, and in each case two successive images thus recorded are compared in order to detect the penetration of a person.
  • an anti-theft device and a method for detecting unauthorized interference according to claim 1 or 15.
  • the solution is based on the basic idea of monitoring areas in the environment and especially above or inside the barrier with a laser scanner for reaching over or exceeding it. So that sales staff in the secured area without triggering a theft signal, the laser scanner is activated only as long as there is no authorized person in the secured area.
  • an authorization device recognizes passages through the access area and checks whether these passages are authorized. Such an authorized passage is then the trigger for activating or deactivating the laser scanner.
  • factors such as the direction of movement of the passage and the number of authorized persons who have hitherto entered the secured area are preferably included in the activation decision, so that the laser scanner is active precisely when no one of the personnel is in the secured area.
  • the invention has the advantage that especially the higher-value goods, which are usually stored or exhibited in an area protected by a barrier, are particularly protected by suitable measures. This is even more true for cash holdings, because even cash registers are often in such delimited by a barrier areas. Every theft is detected early, so that there is enough reaction time to secure the evidence or to seize the offender. Due to the existing architecture and the design of the anti-theft device retrofitting and adaptation to the respective environment is easily possible. For this purpose, the laser scanner can preferably be connected to existing alarm systems by switching relay contacts and constructed almost invisible. Also, by simply retrofitting existing equipment, the theft deterrent provides an economical solution, and the payback time is low due to the high reliability of theft prevention. By appropriate instructions, the deterrence is already increased without intervention of the theft-securing device.
  • the invention provides high reliability with low false alarm rate and thus high acceptance by sales personnel.
  • the sales staff feels better protected against robbery. Customer satisfaction is maintained despite the increased surveillance, as an honest customer does not come into contact with the security.
  • the barrier is preferably a sales counter or a counter.
  • the barrier is formed by the corresponding furniture. It is intended to allow communication and exchange of items across the barrier. The misuse of this accessibility by thieves is reliably excluded by the invention.
  • the monitoring level is preferably horizontally oriented and at least partially covers the secured area. With such a monitoring level, any intervention above the barrier is allowed. But as soon as a culprit tries to reach across the barrier or even jump over, this is reliably detected.
  • the monitoring plane directly adjoins the upper edge of the barrier. It is also conceivable, however, a certain distance to the top, especially if this distance is small enough to prevent undiscovered engagement with the whole arm or body. Likewise, an offset down is conceivable, in which case, of course, the monitoring level should not be arranged overlapping with the barrier. Even with such a monitoring level, attacks and, above all, a jump into the secured area are still reliably detected, and false alarms are as good as impossible because the surveillance level for persons outside the barrier can not be reached without the intention of intervening.
  • the monitoring level preferably also covers an area in front of the barrier.
  • detected interventions in the area in front of the barrier particularly preferably produce a presence detection signal instead of the theft signal.
  • the detection of such interventions is not theft prevention, because it should always be allowed to be in front of the barrier.
  • the position of the intervention allows evaluations to determine the length of stay in certain areas in front of the barrier, for example to assess the impact of promotions, promotions or the attractiveness of exhibited goods.
  • the surveillance plane is preferably adjacent to the upper edge of the barrier, the barrier continuing upward, vertically or diagonally into the secure area. This allows a high mounting of the laser scanner.
  • the physical barrier is thus supplemented at the top by a virtual barrier.
  • the approach to the secure area is allowed to be more restrictive or less strict.
  • the laser scanner is preferably designed to configure subareas of the surveillance level into which an intervention is permitted or not permitted.
  • Configuration of partial areas is a simple adaptation to the local conditions, in particular to a geometry of the barrier. This facilitates the use or conversion to the anti-theft device according to the invention, because the laser scanner and not about the existing or determined by other considerations barrier is adjusted.
  • an alarm system which receives the theft signal and then triggers an audible warning. This immediately draws attention to the thief to capture him, or at least quickly put him to flight before valuable items can be stolen.
  • a video surveillance system which receives the theft signal and then generates an image recording of the environment of the barrier.
  • the video system is thus actively activated by intervention in the monitoring level of the laser scanner.
  • perpetrator-related evidence can be obtained.
  • data protection is maintained, as it is recorded only in the event of an unauthorized field violation of the laser scanner.
  • An honest customer is therefore not recorded in contrast to a permanent camera surveillance.
  • the surveillance is crime-related, the cameras can be positioned and aligned in a targeted manner and deliver clear images that clearly document the perpetrator and the act. In principle, the camera can even be moved or one of several cameras can be selected in order to record the position of the intervention detected by the laser scanner and thus specifically the culprit.
  • the event-related recording has the additional advantage that significantly less image material is created than with a permanent video surveillance and thus space and PC infrastructure can be saved.
  • a video surveillance system which generates an image recording of the secured area, as long as people are there.
  • This monitoring is therefore just complementary to an event-related image recording of an impermissible intervention in the monitoring level of the laser scanner.
  • evidence against culprits so the sales staff can be secured.
  • persons are recognized who have obtained unauthorized access to the secure area, for example with a foreign key or access code.
  • the record may be limited to this additional person verification for a short period of time after an authorized passage.
  • the authorization device preferably contains a status memory in order to store information about authorized passages. This always knows whether an authorized person is in the secure area and who that is. If, for example, several persons have entered the secured area, the laser scanner will not be activated until the last of these persons has left the secured area.
  • the authorization device preferably has an RFID reader or a code reader.
  • an RFID tag or an optical code can be integrated into the work clothes of the sales staff.
  • the authorization in the event of a transfer is made without contact without special action by the sales staff, which leads to increased acceptance.
  • an access management can be carried out that allows or prohibits the sales staff, depending on their position and function, access to certain areas.
  • Exemplary alternatives to contactless access control are key cards or mechanical keys.
  • At least one additional sensor is provided at the access area, in particular a light barrier or a light grid, to detect passageways through the access area.
  • the additional sensor also closes the barrier through the access areas.
  • the additional sensor preferably serves as a trigger for the authorization device in non-contact authorization methods, such as by RFID, since these techniques are often not position specific enough per se to detect when authorization is required.
  • the anti-theft device has at least one further sensor, in particular a light barrier, a light grid or another laser scanner, in order to detect interventions in remaining gaps between the barrier and the monitoring plane.
  • a further sensor in particular a light barrier, a light grid or another laser scanner.
  • the laser scanner preferably has a light emitter for emitting a light beam into the surveillance plane, a light receiver for generating a received signal from the light beam reflected from objects in the surveillance plane, a movable deflection unit for periodically deflecting the light beam in order to scan the surveillance plane in the course of the movement, and a Evaluation unit for detecting the objects based on the received signal.
  • a monitoring level can be monitored over a large angle of up to 360 ° with a single sensor.
  • a laser scanner is flexible and particularly economical to use.
  • the laser scanner is particularly preferably designed as a rangefinder, in that the light transit time between emission and reception of the light beam and, therefrom, the distance of an object can be determined in the evaluation unit.
  • the laser scanner has an angle measuring unit, by means of which the angular position of the deflection unit can be detected. This serves to localize the interventions in the angular direction. If the laser scanner determines the distance and angle, complete position information of the engagement in two-dimensional polar coordinates is available (Lidar).
  • the monitoring level can be divided in any way into fields in which interventions are allowed or not, and thus adapted to the local conditions. Also, for each intervention it is immediately known at which point intervention took place, for example to align a camera or, if necessary, to take staggered measures, such as merely switching on a warning sign, triggering an internal or external alarm or even blocking the outputs.
  • the Figures 1 and 2 each show a schematic three-dimensional view of a sales stress 100 with a theft protection according to the invention.
  • the sales counter 100 forms a physical barrier 102a-b around a secured area 104 all the way around.
  • the barriers 102a, 102b are located above one another and thus prevent any access.
  • the barrier 102c forms a half-high table or counter over which the sales staff can exchange items with customers.
  • the illustrated geometry of barriers 102a-c, secured area 104 and access area 106 are to be understood as purely exemplary. Other applications with such physical barriers 102a-b are also conceivable, for example in storage areas with restricted zones.
  • the anti-theft device comprises a laser scanner 108, an authorization device 110 and a light grid 112, of which only the surveillance beams are drawn.
  • the laser scanner 108 is mounted in this example so that its monitoring plane 114 is horizontally disposed and covers the secured area 104.
  • the authorization device 110 is located near the access area 106, wherein the light grid 112 recognizes by means of beam interruptions when someone enters or leaves the secured area 104.
  • an authorized salesperson 116 is behind the sales counter 100.
  • the laser scanner 108 is therefore inactive, which is why its monitoring level 114 in FIG. 1 is not shown.
  • the authorized salesperson 116 has left the sales counter 100, the laser scanner 108 is active and detects interferences with the surveillance level 114. If a thief 118 attempts to take advantage of the absence of the sales person 116 and steal an item from the inside of the sales stress 100, the attack becomes detected by the laser scanner 108 via the front barrier 102c of the sales price 100. It would also be appreciated if the thief 118 not only bends over the sales counter 100 but even steps in or jumps into the secured area 104.
  • the laser scanner 108 is designed, for example, as initially to FIG. 6 described.
  • the laser scanner 108 operates without contact and scans its monitoring plane 114 in two dimensions. Reflectors or position marks are not needed.
  • monitoring fields linked to an internal output circuit can be configured.
  • the monitoring level 114 can be adapted to the barrier 102a-c, and, unlike the illustration in FIG FIG. 2 also not supervised sections are defined.
  • An external computer or other external evaluation does not necessarily require the laser scanner 108 if the signals, ie the inputs and outputs, are processed in the laser scanner 108 itself and then output.
  • the measurement data of the laser scanner 108 are then available in raw form or directly as interventions in certain configured subregions or position of the potential offender at an interface.
  • a real-time evaluation ensures very fast reaction times.
  • the laser scanner 108 is in the Figures 1 and 2 by way of example mounted on the rear barrier 102a of the sales counter 100, wherein the monitoring plane 114 is mounted horizontally within the barrier 102a-c.
  • the monitoring level 114 is monitored for interference when, as in FIG FIG. 1 the sales counter 100 is unattended, ie no sales person 116 is in the secured area 104.
  • the laser scanner 108 If an intervention is then recognized, such as the exemplary attack of the thief 118 in FIG. 2 , the laser scanner 108 outputs a corresponding theft signal. To The laser scanner can be connected to an existing alarm system. The alarmed staff will then be able to quickly assess the situation and react if necessary. Unwanted messages are rare because the laser scanner 108 is very selective in response to improper interventions. Thus, despite the significantly increased security against thefts, customer satisfaction remains high.
  • a surveillance camera 120 is also preferably activated to record the critical scene after the detected intervention. Since the position of the engagement is known, the surveillance camera 120 can be properly aligned and focused. This enables the surveillance camera to provide event-driven, sharp images of the process and the perpetrator.
  • a different sensor instead of a laser scanner 108.
  • a light grid in the installation is more complex and no freely customizable monitoring fields.
  • a light grid unlike the laser scanner 108, does not detect sufficiently accurate position information for camera control and focusing.
  • a passive infrared detector which, however, in contrast to a laser scanner 108, does not limit the monitoring area to the centimeter, so that an alarm may be triggered too early or falsely or monitoring gaps may remain. On the one hand, this adversely affects the rate of unwanted messages and thus customer satisfaction and acceptance by the sales staff and, on the other hand, security. Therefore, a laser scanner 108 is the preferred sensor according to the invention.
  • the laser scanner 108 operates in the anti-theft device according to the invention in combination with the authorization device 110. This detects whether a salesperson 116 is authorized to pass through the access area 106.
  • authorization methods such as RFID, key cards or optical codes are used, wherein the authorization device 110 then carries a corresponding reading device and authorized sales persons 116 carry the corresponding RFID tag, code or key.
  • a contactless, fully automated authentication increases the convenience for the sales staff.
  • the passage through the access area 106 is preferably detected by means of another sensor, such as the light grid 112. This makes it possible to trigger the authentication and to reliably prevent someone from passing the access area 106 unnoticed.
  • a salesperson 116 enters the secured area 104 through the access area 106, an authentication takes place. If the salesperson 116 is authorized, his monitoring field 114 is deactivated via an input signal to the laser scanner 108. Depending on the conditions of use, it is also conceivable to only switch the monitoring field 114 in order to continue to monitor subareas of the protected area 104. For this purpose, the various adjustable fields of the laser scanner 108 are utilized. If the authentication fails because it is not a salesperson 116 or is not authorized to enter it, an alarm is released and the surveillance camera 120 is activated, similar to an attack by a thief 118 in the surveillance field 114. Authentication can also be used as access management to allow only certain employees in specific areas.
  • the authorizer 110 also preferably remembers this process to keep track of how many and which people are in the secure area 104. Each exit from the secure area 104 may then be used, for example, to actively switch other areas of the monitor field 114. As soon as the last salesperson 116 leaves the secured area 104, the monitoring field 114 becomes as in FIG FIG. 2 activated.
  • additional sensors can be included in the theft protection, such as additional laser scanner or light barriers or light curtain. Side immersion or other evasion attempts of a thief 118 are thus recognized, and it follows directly or via the laser scanner 108, the appropriate hedging.
  • FIG. 3 shows in a schematic three-dimensional view, another embodiment of the anti-theft device according to the invention on a sales counter 100.
  • the laser scanner 108 is mounted above and monitors an oblique monitoring plane 114.
  • the inclination angle of the monitoring plane 114 and the position of the laser scanner 108 can be varied to cover the secured area 104 at different heights and degrees.
  • the front barrier 102c may be located inside or outside and partially within the secured area 104. Due to the higher mounting of the laser scanner 108, it is in some situations facilitated to keep the monitoring plane 114 free from exhibited objects. In principle, it is also conceivable to orient the monitoring plane 114 vertically, for example in direct continuation of the front barrier 102c upwards.
  • FIG. 4 shows in a plan view another example of a barrier 102a-c and a configuration of the monitoring plane 114, which is preferably arranged horizontally, but with a partial area 114a projects beyond the sales counter 100.
  • a part of the sales room can be monitored in front of the sales counter 100.
  • the laser scanner 108 upon detection of an intervention in the forwardly projecting portion 114a triggers no theft signal, but only a presence signal, because the residence in the subarea 114a is permitted.
  • the laser scanner 108 selectively triggers the theft signal or the presence signal upon detection of an intervention.
  • portion 114a projecting into the front sales area it can be determined on the basis of the position of interventions how long a customer is interested in an exhibited item by the length of stay at certain positions or measured in subfields and output. From these data, the effectiveness of special promotions or advertising can be measured, and there are also indications of possible sales-promoting changes in the range or its arrangement.
  • FIG. 5 shows in a plan view similar FIG. 4 a further alternative arrangement of the barrier 102a-c, the access area 106 and the laser scanner 108 with its monitoring level 114.
  • the barrier 102 is here insurmountable closed on both sides, and the secured area 104 is entered and left through an access area 106 configured as a door.
  • the sensor 112 for monitoring passages is therefore a door switch instead of a light grid. This is another of numerous examples of possible arrangements and geometries of the sales stress 102, its access areas 106, and the anti-theft surveillance level 114.
  • a kind of access management can also be carried out with the invention. It is detected whether a person who enters the monitored by the laser scanner 108 defined area behind the barrier 102, is entitled to do so. By means of a contactless identification, it is reported whether the defined area is free or occupied, ie whether there is a person there. If this is the case, it can also be determined and reported whether this person is authorized to stay or not.

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  • Burglar Alarm Systems (AREA)
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Claims (15)

  1. Dispositif de sécurisation antivol (108, 110) pour reconnaître des interventions ou des accès non autorisés dans une zone sécurisée (104) qui est entourée par une barrière physique (102), qui comprend au moins une zone d'accès (106) et qui peut être surmontée à l'extérieur de la zone d'accès (106) par franchissement ou par escalade, ledit dispositif (108, 110) comprenant un scanner à laser (108) réalisé comme un appareil de mesure de distance qui comprend une unité d'évaluation (30), dans laquelle il est possible de déterminer le temps de parcours de la lumière entre l'émission et la réception d'un rayon de lumière (114 (14, 20) et de déterminer à partir de celui-ci l'éloignement d'un objet, et une unité de mesure angulaire (28) au moyen de laquelle il est possible de détecter la position angulaire de l'unité de déflexion (16), de sorte de que l'on dispose de coordonnées de position bidimensionnelles pour des objets détectés dans le plan de surveillance (18, 114), et le scanner à laser (108) est agencé et orienté de telle façon que son plan de surveillance (114) reconnaît un franchissement et une escalade de la barrière (102), pour délivrer ensuite un signal de vol, et est réalisé pour configurer des zones partielles du plan de surveillance (114) dans lesquelles une intervention est autorisée ou n'est pas autorisée, et il est prévu un système d'autorisation (110) de la zone d'accès (106), qui est réalisé pour, lors d'une traversée autorisée à travers la zone d'accès (106), activer ou désactiver le scanner à laser (108).
  2. Dispositif de sécurisation antivol (108, 110) selon la revendication 1, dans lequel la barrière (102) est un comptoir de vente (100) ou un buffet.
  3. Dispositif de sécurisation antivol (108, 110) selon la revendication 1 ou 2, dans lequel le plan de surveillance (114) est orienté horizontalement, et recouvre au moins partiellement la zone sécurisée (104).
  4. Dispositif de sécurisation antivol (108, 110) selon l'une des revendications précédentes,
    dans lequel le plan de surveillance (114) recouvre également une zone devant la barrière (102) et, des interventions reconnues dans la zone devant la barrière (102) engendrent en particulier un signal de reconnaissance de présence au lieu du signal de vol.
  5. Dispositif de sécurisation antivol (108, 110) selon l'une des revendications 1 à 3,
    dans lequel le plan de surveillance (114) est agencé de manière adjacente à l'arête supérieure de la barrière (102), en prolongement vertical de la barrière (102) vers le haut, ou en pénétration diagonale dans la zone sécurisée (104).
  6. Dispositif de sécurisation antivol (108, 110) selon l'une des revendications précédentes,
    dans lequel la zone sécurisée est une zone de caisse ou une zone de vente.
  7. Dispositif de sécurisation antivol (108, 110) selon l'une des revendications précédentes,
    dans lequel il est prévu une installation d'alarme qui reçoit le signal de vol et déclenche ensuite un avertissement acoustique.
  8. Dispositif de sécurisation antivol (108, 110) selon l'une des revendications précédentes,
    dans lequel il est prévu un système de surveillance vidéo (120) qui reçoit le signal de vol et qui engendre ensuite un enregistrement par imagerie de l'environnement de la barrière (102).
  9. Dispositif de sécurisation antivol (108, 110) selon l'une des revendications précédentes,
    dans lequel il est prévu un système de surveillance vidéo (120) qui engendre un enregistrement par imagerie de la zone sécurisée (104) aussi longtemps que des personnes (116) y séjournent.
  10. Dispositif de sécurisation antivol (108, 110) selon l'une des revendications précédentes,
    dans lequel le système d'autorisation (110) contient une mémoire d'état afin de mémoriser des informations concernant des traversées autorisées.
  11. Dispositif de sécurisation antivol (108, 110) selon l'une des revendications précédentes,
    dans lequel le système d'autorisation (110) comprend un lecteur RFID ou un lecteur de code.
  12. Dispositif de sécurisation antivol (108, 110) selon l'une des revendications précédentes,
    dans lequel il est prévu au moins un capteur additionnel (112) au niveau de la zone d'accès (106), en particulier une barrière lumineuse ou une grille lumineuse, afin de reconnaître des traversées à travers la zone d'accès (106).
  13. Dispositif de sécurisation antivol (108, 110) selon l'une des revendications précédentes,
    qui comprend au moins un autre capteur, en particulier une barrière lumineuse, une grille lumineuse ou un autre scanner à laser, afin de reconnaît des interventions dans des intervalles restants entre la barrière (102) et le plan de surveillance (114).
  14. Dispositif de sécurisation antivol (108, 110) selon l'une des revendications précédentes,
    dans lequel le scanner à laser (10, 108) comprend un émetteur de lumière (12) pour émettre un rayon de lumière (14) dans le plan de surveillance (18, 114), un récepteur de lumière (24) pour engendrer un signal de réception à partir du rayon de lumière (20) réémis par des objets dans le plan de surveillance (18, 114), une unité de déflexion mobile (16) pour défléchir périodiquement le rayon de lumière (14, 20) afin de palper le plan de surveillance (18, 114) dans le déroulement du mouvement, et une unité d'évaluation (30) pour détecter les objets au moyen du signal de réception.
  15. Procédé pour la reconnaissance d'interventions ou d'accès non autorisés dans une zone sécurisée (104) qui est entourée par une barrière physique (102) qui comprend au moins une zone d'accès (106) et qui peut être surmontée à l'extérieur de la zone d'accès (106) par franchissement ou escalade, dans lequel on surveille avec un scanner à laser (108) mesurant des distances la région (114) au-dessus ou derrière la barrière (102) et on détermine des coordonnées de position bidimensionnelle d'objets détectés au moyen du temps de parcours de la lumière entre l'émission et la réception d'un rayon de lumière (14, 20) et d'une mesure de la position angulaire d'une unité de déflexion (16) du scanner à laser (108) et, lors de la reconnaissance d'un franchissement et d'une escalade dans des zones partielles configurées du plan de surveillance (114) dans lesquelles une intervention n'est pas autorisée, on délivre un signal de vol, et le scanner à laser (108) est activé ou désactivé quand une traversée autorisée à lieu à travers la zone d'accès (106).
EP20110164049 2011-04-28 2011-04-28 Dispositif de sécurisation contre le vol et procédé de reconnaissance d'interventions et d'accès non justifiés Not-in-force EP2518709B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20110164049 EP2518709B1 (fr) 2011-04-28 2011-04-28 Dispositif de sécurisation contre le vol et procédé de reconnaissance d'interventions et d'accès non justifiés
US13/428,664 US8907792B2 (en) 2011-04-28 2012-03-23 Theft protection device and method for the detection of unauthorized intrusion or entrance
JP2012092626A JP5619809B2 (ja) 2011-04-28 2012-04-16 窃盗防止装置並びに不正な干渉及び侵入の認識方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20110164049 EP2518709B1 (fr) 2011-04-28 2011-04-28 Dispositif de sécurisation contre le vol et procédé de reconnaissance d'interventions et d'accès non justifiés

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EP2518709A1 EP2518709A1 (fr) 2012-10-31
EP2518709B1 true EP2518709B1 (fr) 2013-06-12

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US8907792B2 (en) 2014-12-09
EP2518709A1 (fr) 2012-10-31
JP2012234527A (ja) 2012-11-29
JP5619809B2 (ja) 2014-11-05
US20120274466A1 (en) 2012-11-01

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