FR3071529B1 - LOCALIZED DETECTION SYSTEM FOR SAFETY CLOSURE - Google Patents

Abstract

Method for localized detection of a flap (11) disengaged or malfunctioning in a protective fence, said enclosure comprising a plurality of anchoring elements and a plurality of flaps (11) arranged on the anchoring elements (12) each flap being associated with a so-called secondary signaling means (30), said flaps being each in a so-called engaged position or in a so-called disengaged position, said engaged position corresponding to the closing of an electrical switch, and said position disengaged corresponding to its opening, said electric switch acting as a double-contact switch, in which process: (a) said switches are electrically connected in series to a secondary electric circuit (300) so as to form a closed loop, said electric circuit secondary circuit (300) being itself connected to a primary electrical circuit (200) comprising at least at least one relay (210) and a primary signaling means connected to said relay (210), (b) the state of the primary signaling means is checked, i) if the primary signaling means is activated, it is deduced that all the baffles (11) are switched on or in normal operation, ii) if the primary signaling means is deactivated, a tertiary electrical circuit (400) connected to the secondary electrical circuit (300) activates a secondary signaling means (30) of said flap (11) disengaged or malfunctioning.

Description

LOCALIZED DETECTION SYSTEM FOR SAFETY CLOSURE

Technical Field of the Invention The invention relates to security fences for detecting an intrusion attempt within a perimeter delimited by the fence. These fences include anchoring elements provided in the upper part of sill. More particularly, the invention relates to a method and system for localized detection of an intrusion attempt at the top of the protective fence, i.e. on a detection system of a flap that is open or malfunctioning.

State of the art

A protective fence at least partially delineates an enclosure to form a physical barrier to prevent a person from entering the perimeter of the enclosure. It includes ground anchors, such as posts, and longitudinal fence members that extend between the anchors.

In order to make it more difficult to cross the protective fence, devices called "bolsters" can be installed in the upper part of the anchoring elements on the ground, in their vertical extension. These flaps, as described in patents FR 2 429 309 and FR 2 568 615, constitute additional means for receiving and fixing longitudinal secondary closing elements which extend between the flaps. These flaps are projecting upward with different angles from the vertical. It is also known to provide these flaps tilt mechanisms, with detectors that detect a lateral force leading to the tilting of the flaps. Such force results in particular from the attempt to climb the fence. The flaps being connected by longitudinal secondary fence elements, an attempt to cross the fence will most often lead to the tilting of several adjoining flaps. It turns out that a strong wind is likely to exert the same type of force on the flap, which can lead to a false alarm.

According to the state of the art, the "open" (i.e. which have undergone sufficient force to trigger their tilt mechanism) or "disengaged" flaps remain in the open position and must be reset manually or automatically. However, visually it is not always easy to see if a flap is "open" or simply deformed; likewise, a sill may appear to be in the "closed" position when it is actually not properly engaged or rearmed.

The Applicant has found that the detection systems according to the state of the art do not allow to simply and quickly check the proper functioning of the detection system, especially following an attempted intrusion or a storm. In the case of fences equipped with flaps and detectors detecting their tilting, it is particularly desirable to be able to easily locate an open flap to be able to, in particular to facilitate maintenance, and rearm. This difficulty is increased when several flaps, neighbors or not, are open.

The problem that the present invention seeks to solve is to provide a system for detecting and locate quickly and accurately any open sill, and which is particularly suitable for fences of very great length, of the order of several kilometers.

OBJECT OF THE INVENTION The subject of the invention is a method of localized detection of a dislocated flap or malfunction in a protective enclosure, said enclosure comprising a plurality of anchoring elements and a plurality of flaps disposed on the elements. anchoring, each flap being associated with a so-called secondary signaling means, said flaps being each in a so-called engaged position or in a so-called disengaged position, said engaged position corresponding to the closing of an electrical switch, and said position disengaged corresponding to its opening, said electrical switch acting as a double contact switch, wherein: (a) said switches are electrically connected in series to a secondary electric circuit so as to form a closed loop, said secondary electrical circuit being - even connected to an electric circuit a primary element comprising at least one relay 210 and a primary signaling means connected to said relay 210, (b) the state of the primary signaling means is checked, i) if the primary signaling means is activated, it is deduced that all the baffles are switched on or in normal operation, ii) if the primary signaling means is deactivated, a tertiary electrical circuit 400 connected to the secondary electrical circuit activates a secondary signaling means of said flap disengaged or malfunction.

In one embodiment, said enclosure comprises n disengaged or defective catches, in which process, in step (b) ii) the primary signaling means is deactivated, the tertiary electrical circuit 400 connected to the secondary electrical circuit activates the means secondary signaling of the dislocated flap present first on the secondary circuit 300, the method comprising after step (b) a step (c) where said flap disengaged or malfunction present first on the secondary circuit 300 is reset, then the circuit tertiary electric 400 connected to the secondary electrical circuit activates the secondary signaling means of the second flap disengaged or malfunction present on the secondary circuit 300, and then reproduces step (b) and (c) of the process until the n the dislodged or malfunctional flap is detected. The subject of the invention is also a method of putting back into operation a protective fence including a method of localized detection of an unlatched or malfunctioning gutter, in which after step c) the baffle is released or disconnected. malfunction is rearmed.

Advantageously, said electrical switch is a double-contact switch. Advantageously, the tertiary electrical circuit 400 connected to the secondary electrical circuit activates a secondary signaling means of said flap disengaged or malfunctioning by means of said double-contact switch.

Advantageously, said primary signaling means or said secondary signaling means is a sound medium or a visualization means such as an LED.

Advantageously, the protection fence comprises at least one detection zone and the at least one detection zone comprises at least one relay 210 and a primary signaling means associated with this relay 210, in which the state of the means is verified. primary signaling of the at least one detection zone. The subject of the invention is also a system for detecting a dislocated or dysfunctional flap in a protective enclosure, said enclosure comprising a plurality of anchoring elements and a plurality of flaps disposed on said anchoring elements, bolsters each being in a so-called engaged position or in a so-called disengaged position, said engaged position corresponding to the closing of an electrical switch, and said disengaged position corresponding to its opening, each bolster being associated with a so-called secondary signaling means , characterized in that it comprises a) a primary electrical circuit comprising at least one relay 210 and primary signaling means connected to said relay 210, b) a secondary electrical circuit for connecting said switches in series so as to form a loop closed, said secondary electrical circuit being connected to the primary electric circuit, c) a plurality of secondary signaling means, d) a tertiary electrical circuit 400 intended to be connected to the secondary electrical circuit in order to activate the secondary signaling means of a disconnected or malfunctioning flap. The invention also relates to a protective fence comprising a detection system of a flap disengaged or malfunction.

Advantageously, the secondary signaling means of a flap is fixed on said flap or on the anchoring element on which is disposed said flap.

DETAILED DESCRIPTION The invention will be described below, with reference to the accompanying drawings, given by way of non-limiting examples, in which: - Figure 1 is a perspective view, illustrating part of a protective fence; - Figure 2 is a perspective view, illustrating at another angle more accurately an anchor element, including the connection between a flap in its environment in locked or closed mode and a securing pole belonging to the security fence ; - Figure 3 is a perspective view, illustrating more precisely an anchoring element, including the connection between a flap in its environment in disengaged or open mode and a fixing post; - Figure 4 shows the circuit diagram of the supply of the localized detection system of at least one open flap or malfunction; FIG. 5 represents an electrical diagram illustrating on a larger scale the detail I of FIG. 4. It specifies the electrical diagram, in test mode, of the localized detection system of at least one open or dysfunctional flap in an enclosure comprising three bibs; FIG. 6 represents a logic diagram of the test mode of the localized detection system of an open flap or malfunctioning in an enclosure comprising three flaps. In this figure, the four-digit markers denote process steps.

We now describe the operating principle of the intrusion detection system in an enclosure delimited by a security fence.

Figure 1 depicts a portion of a protective fence 100.

A protective fence 100 at least partially defines an enclosure, so as to form a physical barrier to prevent a person from entering the perimeter of the enclosure. It comprises ground anchoring elements 40 and fence elements 20, 21, 22.

These anchoring elements 10 can be fixed to the ground. These anchoring elements may be fixing posts, preferably rigid posts sealed in the ground or walls. An anchoring element is typically a fixing post 12, generally vertical. On these anchoring elements such as a fixing post 12 may rest, in the upper part a flap 11. The flap 11 is connected to the anchoring element by any means, preferably by specific fixing means allowing a adaptation to an existing fence, wall fixings or turntables.

Said fence elements 20 comprise first fence elements 21 for connecting two neighboring fixing posts and second fence elements 22 for connecting two adjacent flaps 11. These first and second fencing elements can be rigid, semi-rigid or flexible. In particular, they may be composed of barbed wire, concertinas, steel wire, cables, rigid grid bars or panels.

These first fence members 21 typically include fence panels secured through fastening means on two adjacent studs.

The flaps 11 arranged at the top of the fixing posts 12 support these second fence members 22, which may be made for example of barbed wire to enhance the anti-intrusiveness of the fence.

The flaps may have a V shape, inclined at 45 °, straight or otherwise. They can also be adapted to the anchoring elements, and have a variable inclination between 0 ° and 90 °, preferably between 0 ° and 60 °, and even more preferably between 45 ° and 60 °, especially in order to respect the Plumb with respect to anchors, such as a wall. For proper operation the flaps are advantageously spaced a maximum of two meters. According to the invention, the fixing posts 12 comprise a means 30 allowing, in test mode, to signal the opening of the flap. This means can be auditory or luminous, preferably an LED.

FIG. 2 describes a flap in its normal operating position 11 (ie in the "closed" position, also referred to as "engaged") and its device 14 for fixing to the fixing post 12. In this position, the flap can be tilted towards its position "Open" (disengaged) by the application of a lateral force; this failover causes an alert.

The flap 11 comprises a hollow profile 13 in which is fixed at its lower end a device 14 for maintaining said flap 11 to the fixing post 12 and to allow a certain latitude in its movements in the direction perpendicular to the closing elements 20, 21, 22, such as a tilting; this will be explained in greater detail below.

Advantageously, this device 14 comprises two U-shaped pieces 15 and 15 ', each comprising a core 16 and 16' and two wings 17, 17 ', 17 "and 17'". These two U-shaped parts are brought into contact with their outer webs 16 and 16 'and connected by an eccentric contact point 18, by any appropriate means, preferably riveted.

The wings of the first U-shaped part 17 and 17 'are embedded in the hollow profile of the flap 11 and fixed, by any appropriate means 19, to one end of the hollow profile so that the core 16 this first U-shaped piece protrudes from the base of the hollow profile.

The wings of the second U-shaped part 17 "and 17 '" are embedded in the fixing post 12 and fixed, by any appropriate means 19', to the upper end of the fixing post so that the core 16 'of this second U-shaped piece 15' protrudes at the top of the pole.

FIG. 3 shows a flap in its environment in disengaged mode 11 (i.e. in the "open" position) and its device 14 for fixing to the fixing post 12.

A1 is the main axis connecting two neighboring flaps. The eccentric contact point 18 connecting the flap 11 to the fixing post 12 allows the rotation of the flap 11 relative to the fastening post 12, about the axis A1 along the arrow F. This flap can be set in motion by any means appropriate, not shown in the figures, especially during an attempt to intrude into the pen, when a person is supported on the flap or on the second fence elements. When the pressure exerted on the flap 11 or on the second closing elements 22 is greater than a predefined threshold pressure, a flap detection system thus opened is triggered causing the actuation of an alarm signal (not shown in FIG. figure) such as an audible alarm or zone lighting. To do this, the flaps 11 are electrically connected to each other in series by appropriate means, not shown in the figures, and thus form an electric loop hereinafter secondary circuit 300. The secondary circuit 300 is connected to a closed primary circuit 200.

FIG. 4 represents the electric diagram of the supply of the localized detection system of an open or dysfunctional flap, in particular a part of the electrical diagram of the closed primary circuit 200.

The system is powered by the 230 V voltage sector. This electrical circuit comprises a differential type DG general circuit breaker which, when the current consumed is greater than 2 A, cuts off the electrical circuit. The current then enters a transformer T so as to generate at the output of this circuit a voltage of 12 V which will be used to supply both the series loop of the flaps (not shown in FIG. 4) and in test mode. the localized detection system of an open or malfunctioning flap. This electrical circuit comprises a circuit breaker DJ for cutting the current when the current consumed is greater than 2A. The part of the primary circuit 200 present between the terminals 201 and 202 is explained in greater detail in FIG. 5. This primary circuit 200 supplies a relay 210 (see FIG. In the secondary circuit 300, each flap is associated with a switch, preferably a two-contact switch IDC index η, n representing the number of a flap. When all the flaps are engaged, each two-contact switch IDC said flaps is connected to the secondary circuit 300, the secondary circuit 300 is closed, the primary circuit 200 is closed and the relay 210 is energized, ie excited, it is in position normally closed (NC) and the detection system is operational.

When a flap is open the primary circuit 200 opens, the relay 210 is no longer supplied, i.e. is no longer excited and changes state; it is then in the normally open position which causes the actuation of the alarm signal, i.e. the primary signaling means.

This alarm signal allows the security personnel to be rushed on site to see or not the intrusion and secure the pen again.

We now describe the operating principle of the test mode of the localized detection system of an open flap or malfunction for security fence, i.e. the control system of a security fence according to the invention.

As part of a maintenance operation of the security fence or in the event of a breakdown, after having received an alarm signal indicating the actuation of a flap, the operation of the localized detection system for safety fence is verified by the use of the local detection system of an open flap or malfunction in test mode.

This test mode is presented in FIG. 5. In a first step, it is verified that the power supply of the primary and secondary circuits 200 and 200 operates, ie that it is well supplied with low voltage (typically at 12 V) from a distribution network voltage (typically 230 V), the main circuit breaker is armed and there are no wiring problems upstream and downstream. Then the test mode circuit breaker is used which uses in addition to the primary circuit 200 and secondary 300, a tertiary electrical circuit 400 composed of secondary signaling means connected in parallel. Each secondary signaling means is associated with a flap, and is preferably attached to the fastening post 12 on which this flap rests.

Said secondary signaling means typically have two states, namely an activated state and a deactivated state. It can be display means such as LEDs, for example LEDs, which are lit in the activated state and off in the deactivated state, or vice versa. It can be sound means that are audible in the activated state and inaudible in the deactivated state, or vice versa. Their activation state typically signals the engagement of the flap (this variant will be used in the remainder of this description), but it could be the opposite.

In the test mode, when all the flaps are engaged or said in closed mode, the primary circuit 200 is closed and the relay 210 is powered. This is visualized by the operation of a primary signaling means hereinafter called "LED relay" LED0 indicating that the detection system is operational. In this case, the tertiary electrical circuit 400 is not powered and the secondary signaling means associated with the flaps are not activated. In another variant, the primary signaling means may be a sound medium. In the test mode, when a flap is disengaged, the switch with two contacts IDC of said flap present within this flap is no longer connected to the secondary circuit 300 (see Figure 5) but is connected to the tertiary circuit 400 of said flap comprising a secondary signaling means 30, ie a sound medium or a signaling light such as an LED which lights up. The current is interrupted in the secondary circuit 300 and ultimately in the primary circuit 200. The relay 210 is then cut (more powered) and the relay LED off indicating that the detection system is not operational.

The secondary signaling means 30 n activated on the tertiary circuit 400 indicates the location of the cat flap n disengaged. This secondary signaling means may be located for example on the flap, on the pole or at the foot of the post. It allows its location by a maintenance technician. This makes it possible to precisely visualize the location of the intrusion attempt or the malfunctioning of the flap, and to proceed quickly with the troubleshooting and the putting back into service of the detection system. After inspection of the area and / or condition of the sill, it is reset. By way of example, FIG. 5 shows, for an installation comprising three flaps, the switches with two contacts IDC (IDC-1, IDC 2, IDC 3) and the secondary signaling means 30 such as LEDs (31-LED- i, 32 - LED2, 33 - LED3) associated with each lip. In another variant, the secondary signaling means may be sound means. The two-contact switch IDC said flap present within this flap is again connected to the secondary circuit 300 (see Figure 5). The current flows back into the secondary electrical circuit 300, through the connectors C1 and C2 of the primary electrical circuit 200, the relay 210 is then re-energized and the relay LED0 is turned on indicating that all the flaps are switched on again and therefore operational.

With regard to the electrical diagram, when several flaps have been switched on or are faulty, the secondary circuit 300 opens as before, the relay 210 of the primary circuit 200 is no longer powered and causes the actuation of the tertiary electrical circuit 400. a first open flap inducing the activation of the secondary signaling means of said flap 11. After rearming of this flap, the tertiary electric circuit 400 of a second flip-flop is activated inducing the activation of the secondary signaling means 30 of the second flap 11. This procedure is repeated until no secondary signaling means is triggered, ie the tertiary electrical circuit 400 is no longer powered, the relay 210 of the primary circuit 200 is powered and the primary circuit 200 is at new closed. The detection system is then operational.

Since the secondary signaling means 30 are connected in parallel, the disconnected (open) flaps are identified and interlocked one after the other. The signaling order of the disengaged flaps according to the invention is not related to the temporal order of disengagement of the flaps but their position in the secondary circuit 300 electric. In view of the electrical diagram, the first flap disengaged present on the secondary circuit 300 will be the first flap detected according to the invention, and so on for the other flaps disengaged. The signaling order of the disengaged flaps according to the invention is a function of the order of connection of these flaps present in the secondary circuit 300 to the primary circuit 200.

The primary 200, secondary 300 and tertiary 400 electrical circuits may be introduced into sheaths parallel to the fence or be buried near it.

Figure 6 describes by way of example a test procedure for an installation with three flaps. In step 1000 the device is energized, which is visualized by a light (step 1002). Then the circuit breaker is armed in step 1004 and either relay 210 snaps (light on, step 1006), which indicates the proper operation of the fence (step 1100) or it does not engage (step 1008) . In this case, the device test mode is turned on (step 1010). It is then checked (step 1020) if the secondary signaling means of the first flap is deactivated, i.e. LEDï is off; if this is not the case, it is checked and corrected for its engagement (step 1022), which must deactivate said secondary signaling means (step 1024). If in step 1020 the secondary signaling means is already deactivated (step 1024), go directly to step 1026 where it is concluded that the first flap has engaged correctly.

This process continues as shown in Figure 6 for the second and third flap. As for the first flap, it is checked whether the secondary signaling means of the second flap is deactivated (step 1030), i.e. LED2 is extinguished; if this is not the case, it is checked and corrected for its engagement (step 1032), which must deactivate said secondary signaling means (step 1034). If in step 1030 the secondary signaling means is already deactivated (step 1034), go directly to step 1036 where it is concluded that the second flap has engaged correctly.

It is then checked whether the secondary signaling means of the third flap is deactivated (step 1040), i.e. LED3 is off; if this is not the case, it is checked and corrected for its engagement (step 1042), which must deactivate said secondary signaling means (step 1044). If in step 1040 the secondary signaling means is already deactivated (step 1044), go directly to step 1046 where it is concluded that the third flap has engaged correctly.

Once the secondary signaling means of all the flaps are deactivated, the test mode is deactivated (step 1050). The relay 210 engages (light on or primary signaling means engaged, step 1006), which indicates the proper functioning of the fence (step 1100).

This method is preferably conducted as a sequential process, even if the order of the tested flaps can be reversed. Those skilled in the art will have no difficulty in applying this method to a number of flaps greater than three.

In the system according to the invention, the detection system operates in a closed loop. The system may comprise several detection zones and each detection zone may comprise several relays 210 and a relay indicator associated with each relay 210. The enclosure is thus divided into several zones so as to allow rapid identification of the (or) zone (s) of the enclosure where there is an open or failing sill.

The system according to the invention can be applied to all types of flaps.

The sensitivity of the flaps is adjustable so as to facilitate the detection of a person standing on the top of a fence to cross it. The opening of a flap can be adjusted depending on the installation conditions, including taking into account the potential wind. The flaps are generally adjusted to be able, in the "closed" position, also called "engaged", withstand a wind speed of between 90 km / h and 120 km / h. This adjustment is a function, among other things, of the exposure such as at the seafront, the nature of the panels arranged between the flaps such as a blackout grille or a perforated panel and / or the length of the flaps which is typically 450 mm. Advantageously, the flaps have an automatic reset mechanism with the possibility of adjusting the detection force as shown in Figure 3. They can be made of standard steel or stainless steel. Advantageously, these flaps have a prewiring of the contact so as to facilitate the creation of a secondary electrical circuit for connecting all the flaps in series. Advantageously, the connection cables between each lip are mechanically protected.

Claims (11)

1. A method of localized detection of a flap (11) disengaged or malfunctioning in a protective fence, said enclosure comprising a plurality of anchoring elements and a plurality of flaps (11) arranged on the anchoring elements ( 12), each flap being associated with a so-called secondary signaling means (30), said flaps being each in a so-called engaged position or in a so-called disengaged position, said engaged position corresponding to the closing of an electrical switch, and said disengaged position corresponding to its opening, said electric switch acting as a double-contact switch, in which method: (a) said switches are electrically connected in series with a secondary electric circuit (300) so as to form a closed loop, said secondary electrical circuit (300) being itself connected to a primary electrical circuit (200) co comprising at least one relay (210) and primary signaling means connected to said relay (210), (b) checking the state of the primary signaling means, i) if the primary signaling means is activated, it is assumed that all the flaps (11) are switched on or in normal operation, ii) if the primary signaling means is deactivated, a tertiary electrical circuit (400) connected to the secondary electrical circuit (300) activates a secondary signaling means (30) of said flap ( 11) disengaged or malfunctioning. 2. The detection method as claimed in claim 1, in which said enclosure comprises n disengaged or defective catches, in which, in step (b) ii) the primary signaling means is deactivated, the tertiary electrical circuit (400) connected to the secondary electrical circuit (300) activates the secondary signaling means (30) of the deactivated flap present first on the secondary circuit (300), the method comprising, after step (b), a step (c) in which said flap is disengaged or in malfunction present first on the secondary circuit (300) is reset, then the tertiary electrical circuit (400) connected to the secondary electrical circuit activates the secondary signaling means (30) of the second flap disengaged or malfunction present on the secondary circuit ( 300), and then step (b) and (c) of the method is repeated until the n-th bung that is disengaged or malfunctioning is detects. 3. A method of putting back into operation a protective fence including a method of localized detection of a flap disengaged or malfunction according to claim 2, wherein after step c) the bleeding ntème désenclenché or malfunction is rearmed. 4. Detection method according to any one of claims 1 or 2, wherein said electrical switch is a double-contact switch. 5. Detection method according to claim 4, wherein the tertiary electrical circuit (400) connected to the secondary electrical circuit (300) activates a secondary signaling means (30) of said flap disengaged or malfunction by means of said double-contact switch. The detection method according to any one of claims 1, 2, 4 or 5, wherein said primary signaling means or said secondary signaling means (30) is a visualization means, preferably an LED, or a means sound. 7. Detection method according to any one of claims 1, 2, 4, 5 or 6 wherein the protective fence comprises at least one detection zone and the at least one detection zone comprises at least one relay (210). ) and a primary signaling means associated with this relay (210), in which method the state of the primary signaling means of the at least one detection zone is verified. 8. System for detecting a flapper disengaged or malfunctioning in a protective fence, said enclosure comprising a plurality of anchoring elements and a plurality of flaps disposed on said anchoring elements, said flaps being each located in a so-called engaged position or in a so-called disencumbered position, said engaged position corresponding to the closing of an electrical switch, and said disencumbered position corresponding to its opening, each flap being associated with a so-called secondary signaling means, characterized in that it comprises a) a primary electrical circuit (200) comprising at least one relay (210) and primary signaling means connected to said relay (210), b) a secondary electrical circuit (300) for connecting said switches in series in a manner forming a closed loop, said secondary electrical circuit (300) being connected to the electrical circuit a primary circuit (200), c) a plurality of secondary signaling means (30), d) a tertiary electrical circuit (400) for connection to the secondary electrical circuit (300) for activating the secondary signaling means (30). ) a dislocated flap or malfunction. 9. Protective fence comprising a system for detecting a disengaged or malfunctioning flap according to claim 8. 10. Detection system according to claim 8 characterized in that the secondary signaling means (30) of a flap (11) is fixed on said flap or on the anchoring element (12) on which is disposed said flap . 11. Protection fence according to claim 9 characterized in that the secondary signaling means (30) of a flap (11) is fixed on said flap or on the anchoring element (12) on which is disposed said flap .