BE1025350A1 - Intelligent protection electric fence system - Google Patents

Abstract

The invention relates to an electric fence system for intelligent protection. The system comprises a section of electric fence wire (1) disposed along at least a portion of said perimeter, electrically powered and supported by a guide (31). This guide (31) comprises a hollow insulator (311), an elastic element (313) electrically conductive placed at least partially inside the insulator (311) and a conductive element (314) in electrical contact with the section of electric fence wire (1) and at least partially surrounding the elastic element (313) while being at a different electrical potential thereof. The elastic member (313) can flex when a given force is exerted on the electric fence wire section (1), thereby causing electrical contact with the conductive member (314). This electrical contact can then be picked up by a detection system.

Description

"Intelligent protection electric fence system"

Technical area

The present invention relates to an electric fence system for protecting a site with a defined perimeter against an intrusion.

Prior art

The Belgian patent with publication number 1009022 and deposit number 09400134 discloses an electric fence system for protecting a site with a specific perimeter against intrusion. A known problem with this known system is that it is not secure enough.

Summary of the invention

An object of the present invention is to provide an electric fence system capable of protecting a site of determined perimeter against an intrusion and particularly secure.

To this end, the invention proposes an electric fence system for protecting a site with a determined perimeter against an intrusion, comprising:

- an electric generator;

- a first section of electric fence wire which is arranged along at least part of the perimeter and which is electrically connected to the electric generator;

- A first bar, a first half of which is capable of being fixed to a support arranged along the perimeter;

- A first guide which supports the first section of electric fence wire and which is mechanically coupled to the first bar;

characterized in that

- The first guide includes a first hollow insulator which supports the first section of electric fence wire;

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- The first guide comprises a first support which is fixed to a second half of the first bar;

- The first guide comprises an elastic element which is electrically conductive, which is placed at least partially inside the first insulator and which is mechanically coupled both to the first insulator and to the first support;

- The first guide comprises a conductive element which is in electrical contact with the first section of electric fence wire;

- The conductive element comprises a first part which at least partially surrounds the elastic element;

- the electric fence system is arranged so that the conductive element is at an electrical potential different from the elastic element;

the electric fence system is arranged so that the elastic element is able to bend when a determined force is exerted on the first section of electric fence wire, so as to generate an electrical contact between the elastic element and the first part of the conductive element;

- the electric fence system comprises a detection device arranged to detect an electrical contact between the conductive element and the elastic element.

The system proposed by the invention is particularly secure because it allows the detection of significant forces exerted on certain elements making up the electric fence. On the one hand, the very existence of the first section of electric fence wire and of an electric voltage in the electric fence system is likely to discourage any intrusion. On the other hand, when an individual tries to enter the site, for example, by modifying the position of the first section of electric fence wire so as to allow an intrusion, if an effort at least equal to the effort determined is exerted on the first section of fence wire

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- 3 electric, there is a deflection of the elastic element and the insulator of the first guide taking into account the fact that these two elements are mechanically coupled. Consequently, the distance between the elastic element and the conductive element decreases and, given that these are at different electrical potentials and that the first part of the conductive element at least partially surrounds the elastic element, a contact electric is created between these two elements of the first guide. Since the detection device is arranged to detect such an electrical contact, the modification of the position of the first section of electric fence wire by the individual so as to allow an intrusion is thus detected.

The system according to the invention makes it possible in particular to detect the installation of a ladder on the electric fence. Indeed, the bar being fixed on the support by one of its halves, for example its lower half, while the first guide is fixed on the other half of the bar, the guide is at a position in height adequate to detect the installation of an object resting in height on the electric fence.

Likewise, the system allows the detection of a significant force which, exerted on the first guide in itself, would move it from its position at rest.

In addition, the system according to the invention makes it possible to detect any break in the wire or grounding of the wire.

In one embodiment of the invention, the first guide is fixed to an upper end of the first bar.

Preferably, the electric fence system is insensitive to normal atmospheric variations.

The electric fence system proposed by the invention can, for example, be used to protect private property, logistics centers, or vehicle storage areas, other values or

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- 4 materials. Advantageously, the electric fence system according to the invention can also be used to avoid prison escapes.

Preferably, the detection device is arranged to detect any voltage drop in the first section of electric fence wire. For example, it may be able to detect any voltage drop equivalent to an electrical short circuit between 500 and 100 ohms. It is preferably arranged to detect if the first section of electric fence wire is cut.

Advantageously, the electric fence system proposed by the invention can be used in isolation or in addition to other protection means. In particular, the aforementioned support can be a wall, a trellis, a fence, a post, a bar or even another electric fence system for protecting the site.

According to one embodiment, the electric fence system further comprises at least one fixing element mechanically coupling the first bar to the support.

According to an embodiment of the invention, the center of gravity of the first guide is located higher than the center of gravity of the first bar.

According to one embodiment of the invention, the center of gravity of the first bar is located higher than the center of gravity of the support.

According to one embodiment, the electric fence system comprises several bars, each one capable of being fixed to a support disposed along the perimeter, and several guides which support the first section of electric fence wire, each being mechanically coupled to a bars.

According to one embodiment, the electric fence system comprises several sections of electric fence wire electrically connected to the electric generator and supported by guides mechanically coupled to a support disposed along the perimeter.

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- 5 According to one embodiment of the invention, the electric generator is that described in the Belgian patent with publication number 1009022 and is designed to send electric pulses in the first section of electric fence wire.

The system is preferably arranged so that the electric generator generates in the first section of electric fence wire an electric voltage high enough to discourage any intrusion. For example, the electrical voltage in the first section can be between 1000 and 9000 Volt, preferably between 7000 and 8000 Volt.

Preferably, the first part of the conductive element which at least partially surrounds the elastic element is located on the side of the first support of the first guide.

Preferably, the system is such that the first section of electric fence wire and the first bar are perpendicular in the vicinity of the first guide.

Preferably, the first bar is straight and rigid.

According to an embodiment of the invention, the first bar is made of an electrically conductive material.

According to another embodiment of the invention, the first bar is electrically insulating.

Preferably, the first section of electric fence wire is made of aluminimum-chrome cable from 16 to 18 tenths of a millimeter in diameter.

According to one embodiment of the invention, the conductive element is electrically isolated from the first support when the first section of electric fence wire is awaiting the determined force.

In other words, the conductive element is electrically isolated from the first support when the first section of electric fence wire is not subjected to the determined force.

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Advantageously, the invention according to this embodiment allows permanent electrical contact between the elastic element and the first support.

According to an embodiment of the invention, the first support is a metallic element which is in electrical contact with the elastic element and which is connected to earth.

According to one embodiment of the invention, the elastic element is a metal spring screwed on one side onto a thread, preferably outside, of the first support and on the other side onto a thread, preferably inside, of the first insulator.

Advantageously, the elastic element of the invention according to this embodiment is self-locking, good electrical conductor and flexible.

According to one embodiment, the electric fence system is arranged so that the elastic element is at a fixed potential, for example earth.

According to one embodiment of the invention, the conductive element is metallic.

According to an embodiment of the invention, the first part of the conductive element forms the whole of the elastic element.

Advantageously, the invention according to this embodiment allows the detection of a deflection of the elastic element of the first guide in all directions. In particular, the invention according to this embodiment allows the detection of a modification of the rest position of the first section of electric fence wire and of the first guide regardless of the direction in which the force is exerted at the origin. of this change.

According to one embodiment of the invention, the conductive element comprises a second part which at least partially surrounds an external face of the first insulator.

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- 7 According to one embodiment of the invention, the conductive element comprises a second part projects beyond a free end of said first insulator.

Advantageously, the conductive element being in electrical contact with the first section of electric fence wire and therefore energized, the invention according to this embodiment discourages an ill-intentioned individual who wishes to manipulate the first guide.

Preferably, the second part of the conductive element which at least partially surrounds an outer face of the first insulator is located on the side of the first support of the first section of electric fence wire.

Preferably, the invention is such that the first insulator comprises a polyethylene body and a clamping head which supports the first section of electric fence wire.

Even more preferably, the conductive element comprises a second part which at least partially surrounds the clamping head of the first insulator.

Advantageously, the conductive element being in electrical contact with the first section of electric fence wire, the invention according to this embodiment discourages an ill-intentioned individual who wishes to manipulate the first guide by unscrewing the clamping head of the first insulator to gain access. at its inner part.

According to one embodiment of the invention, the first insulator encloses the elastic element and the first part of the conductive element.

Advantageously, the invention according to this embodiment protects the interior of the insulator against external deterioration.

More particularly, the invention according to this embodiment protects the elastic element and the first part of the conductive element against an ill-intentioned external intrusion having the objective of

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- 8 block the conductivity between the elastic element and the conductive element when the elastic element bends.

According to an embodiment of the invention, the support is a wall, a trellis, an electric fence, a barrier, a post or a bar.

According to one embodiment, the electric fence system further comprises an alert device connected to the detection device and arranged to perform at least one of the following actions when the detection device detects an electrical contact between the conductive element and the elastic element:

- pilot surveillance cameras;

- send a signal to an electronic device such as a central alarm, a computer, a telephone or a mobile telephone;

- activate lighting, preferably directed towards the place where the electrical contact between the conductive element and the elastic element occurs.

These different techniques make it possible to warn the persons concerned, to remove the doubt about an intrusion via the cameras, or even to dissuade an intrusion. In addition, the alert device can be placed in a terminal block.

According to one embodiment of the invention, the electric generator is able to supply a voltage between 7000 and 8000 Volt to the first section of electric fence wire.

Advantageously, this voltage makes it possible to obtain a dissuasive effect if an individual touches the first section of electric fence wire.

According to a particular embodiment of the invention, on the one hand, the support is a second bar, on the other hand, the electric fence system further comprises:

- a second section of electric fence wire which is arranged along at least part of the perimeter and which is electrically connected to the electric generator;

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- a second insulator which supports the second section of electric fence wire;

- a second support which is mechanically coupled to the second insulator and to the second bar;

- a first stop which is mechanically coupled to the second support;

and it is arranged so that:

- The first stop is at an electrical potential different from the second section of electric fence wire;

- the first stop comes into electrical contact with the second section of electric fence wire when a determined direction and intensity force acts on it;

- The detection device is able to detect an electrical contact between the first stop and the second section of electric fence wire.

Preferably, the first stop and the second section of electric fence wire are arranged at a determined distance so as to come into electrical contact when an individual tries to spread the wire in the direction of the stop. Advantageously, the intrusion attempt is then signaled by the detection device.

Preferably, the first stop is in a secant plane not perpendicular to the direction of the second bar.

Preferably, the first stop is arranged to extend at least on two sides of the second section of electric wire.

Preferably, the first stop has a U-shape.

Preferably, the first stop is made of a conductive material and is connected to the ground.

This embodiment of the invention does not exclude that the first and the second sections of electric fence wire are mechanically and electrically connected to each other.

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- 10 According to a particular embodiment of the invention which is distinct from the previous one, on the one hand, the support is a second electric insulating bar, on the other hand, the electric fence system further comprises:

- a third electrical insulating bar which is arranged along the perimeter in a direction essentially similar to the direction of the second bar;

- a second section of electric fence wire which is arranged along at least part of the perimeter and which is electrically connected to the electric generator;

- a third section of electric fence wire which is placed along at least part of the perimeter;

- a second metal guide which satisfies the following properties:

• it is mechanically coupled to the second bar;

• it is arranged in a direction essentially orthogonal to the direction of the second bar and in a first direction along the latter direction;

• it supports the second section of electric fence wire;

• it is in electrical contact with the second section of electric fence wire;

- a third metal guide which satisfies the following properties:

• it is mechanically coupled to the third bar;

• it is arranged in a direction essentially orthogonal to the direction of the third bar and in a second direction in this latter direction, this second direction being essentially opposite to the first direction;

• it supports the second section of electric fence wire;

• it is in electrical contact with the second section of electric fence wire;

- a fourth metal guide which satisfies the following properties:

BE2017 / 5467 • it is mechanically coupled to the second bar;

• it is offset from the second metal guide on the second bar;

• it is arranged in a direction essentially orthogonal to the direction of the second bar and in the aforementioned second direction in this latter direction;

• it supports the third section of electric fence wire;

• it is in electrical contact with the third section of electric fence wire;

- a fifth metallic guide which satisfies the following properties:

• it is mechanically coupled to the third bar;

• it is offset from the third metal guide on the third bar;

• it is arranged in a direction essentially orthogonal to the direction of the third bar and in the first direction mentioned above in this latter direction;

• it supports the third section of electric fence wire;

• it is in electrical contact with the third section of electric fence wire;

and it is arranged so that:

- The third section of electric fence wire is at an electrical potential different from the second section of electric fence wire;

- The detection device is able to detect an electrical contact between the third section of electric fence wire and the second section of electric fence wire.

Advantageously, this position of the second, third, fourth and fifth metal guides in the system according to the invention is such that the second and third sections of electric fence wire define non-parallel lines between the second bar and the third bar. Therefore, if an individual seeks to pass the

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- 12 electric fence system by bringing the second and third sections of electric fence wire together, then they will touch, which will create an electrical contact between them which will be detected by the detection device.

Advantageously, the additional elements of this particular embodiment of the invention are particularly easy to manufacture and inexpensive because they only require insulating bars, metal guides which can be very simple and electrical wire.

Advantageously, the additional elements of this particular embodiment of the invention are particularly discreet because they do not require insulators to isolate the second and third sections of electric fence wire because the insulation between the wires is ensured by the bars .

Advantageously, the additional elements of this particular embodiment of the invention are particularly quick to install, in particular because they do not require having a stop at a determined distance from the second or third section of electric fence wire.

In the electric fence system according to this embodiment, the second, third, fourth and fifth metal guides are intended to mechanically couple second and third sections of electric fence wire to the second and third bars and to guide them.

Preferably, the second and third bars are rectilinear, rigid and parallel.

Preferably, each of the metal guides is made of gavlanized steel and such that the section of electric fence wire and the bar which it couples are essentially perpendicular to each other.

Preferably, the electric fence system according to this embodiment is arranged for the second metal guide either

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- 13 essentially at the same height as the third metallic guide and the fourth metallic guide is essentially at the same height as the fifth metallic guide.

This embodiment of the invention does not exclude that the first and the second sections of electric fence wire are mechanically and electrically connected to each other.

According to the previous particular embodiment of the invention, the electric fence system preferably comprises a metallic element which is in electrical contact with the fourth metallic guide and which extends along the second bar from the fourth metallic guide towards the second metal guide.

Advantageously, if an individual discards the second and third sections of electric fence wire by bringing the second metal guide closer to the fourth metal guide, there will be electrical contact between them via the conductive element without them having to touch each other. . This electrical contact will then be immediately detected by the detection device.

Preferably, the electric fence system according to this particular embodiment includes another metal element which is in electrical contact with the fifth metal guide and which extends along the third bar from the fifth metal guide to the third metal guide. .

Preferably, the conductive element according to this embodiment comprises a plurality of rings surrounding the second bar. For example, the conductive element may be a spring.

Brief description of the figures

Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the

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- 14 understanding of which reference will be made to the appended figures among which:

- Figure 1 illustrates a perspective view of an electric fence system according to an embodiment of the invention;

- Figure 2 illustrates a three-dimensional view of a guide adapted for the invention;

- Figure 3 illustrates a perspective view of an electric fence system according to an embodiment of the invention;

- Figure 4 illustrates a top view of an insulator and a stop adapted for an embodiment of the invention;

- Figure 4 illustrates a perspective view of an electric fence system according to an embodiment of the invention.

The drawings of the figures are not to scale. Generally, similar elements are denoted by similar references in the figures. In addition, identical or analogous elements may bear the same references.

Modes of Carrying Out the Invention

The present invention is described with particular embodiments and references to figures, but the invention is not limited by these. The drawings or figures described are only schematic and are not limiting.

In the context of this document, the concept of "mechanical coupling" between two elements preferably refers to a fixed mechanical holding of the positions of these two elements with respect to each other. In particular, a mechanical coupling between two elements includes the possibility of direct fixing between these two elements, but also that of an indirect fixing by means of at least one intermediate element. However, a mechanical coupling between two elements does not formally exclude a possible relative movement between these two elements.

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- 15 For the purposes of this document, the "interior" of a hollow three-dimensional object is the space included within the concave surface defined by the object itself. In particular, the interior volume of the object is, by definition, finite, while the exterior volume of the object is infinite.

In the context of this document, a "direction" in usual three-dimensional space is defined by the data of a line in space. In particular, two parallel lines in space define the same direction. Each direction in space has two "senses". If A and B are any two distinct points of a line defining a certain direction in space, the course of the line passing through A first and through B then defines a first direction along this direction, while the course of the straight line passing through B first and through A then defines a second direction in this direction, the latter being said to be “opposite” to the first direction. Two directions of space are said to be "orthogonal" if there are two perpendicular lines of space that define these two directions.

In the context of this document, the terms “first”, “second”, “third” and “fourth” serve only to differentiate between the different elements and do not imply an order between them.

Figure 1 illustrates an electrical fence system for protecting a perimeter site determined against an intrusion according to an embodiment of the invention. The system illustrated in FIG. 1 can be called a “low shutter” type system.

In the representation of FIG. 1, the electric fence system comprises four sections of electric fence wire (1) which are essentially parallel and arranged essentially horizontally. Each of the sections of electric fence wire (1) is electrically connected to an electric generator not shown in the figure. According to one embodiment of the invention, these sections of fence wire

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- 16 electric are connected together so as to be part of the same electric fence wire. According to one embodiment of the invention, more than four sections of electric fence wire are part of the electric fence system.

In the representation of FIG. 1, the electric fence system comprises a first bar (11) and a second bar (11 A) with first halves (111) and (111 A) respectively and second halves (112) and (112A ) respectively. According to one embodiment of the invention, more than two bars are part of the electric fence system. According to one embodiment of the invention, the number of bars is different from the number of sections of electric fence wire.

In the representation of FIG. 1, the bars (11) and (11 A) comprise two parts, essentially rectilinear and rigid and making an angle of approximately 135 degrees.

In the representation of Figure 1, the support (12) is a wall arranged along the perimeter to be protected. Fixing means (21) fix the first halves (111) and (111 A) of the bars (11) and (11 A) along the wall (12).

In the representation of FIG. 1, a first guide (31) and a third guide (31 B) support the first section of electric fence wire (1), and a second guide (31 A) and a fourth guide (31C) support the second section of electric fence wire (1). According to one embodiment of the invention, more than four guides are part of the electric fence system.

In one embodiment of the invention, the electric fence system further comprises tensioners not shown so that each section of electric fence wire (1) is stretched between two tensioners so as to undergo a mechanical tension which allows it to remain straight between the guides. Preferably, these tensioners include

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- 17 a compression spring ensuring mechanical tension on the sections of electric fence wire whatever the temperature.

In the representation of FIG. 1, the guides (31), (31 A), (31 B) and (31C) each include a hollow insulator (311), (311 A), (311 B) and (311C) respectively , and a support (312), (312A), (312B) and (312C) respectively. The insulators (311) and (311 B) support the first section of electric fence wire (1), and the insulators (311 A) and (311C) support the second section of electric fence wire (1). The supports (312) and (312A) are fixed to the second half (112) of the first bar (11) and the supports (312B) and (312C) are fixed to the second half (112A) of the second bar (12 ).

Preferably, each of the guides (31), (31 A), (31 B) and (31 C) is a guide as illustrated in FIG. 2.

Thus, when an individual attempts to enter the protected perimeter, for example by climbing the wall (12), if he exerts a significant force on one of the sections of electric fence wire (1), for example by trying to push them aside, if he tries to cut them, or even, if he exerts a significant force on one of the guides (31), (31 A), (31 B) or (31 C) while trying to cross the electric fence system, the detection device not shown will react by activating an alert device not shown but preferably arranged in the system which will then be able to carry out at least one of the following actions: direct a surveillance camera towards the area where an electrical contact has been detect, activate lighting in this area and send a message to an electronic device such as an alarm center, computer, telephone or mobile phone.

FIG. 2 illustrates a first guide (31) of an electric fence system according to an embodiment of the invention.

In the representation of FIG. 2, the first guide (31) comprises a first hollow insulator (311) comprising a body (3111) and

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- 18 a clamping head (3112). The clamping head (3112) supports and guides a first section of electric fence wire (1). The clamping head (3112) is fixed to the body (3111). The body (311) has a cavity (20) having an opening (30) located opposite the clamping head (3112). The first insulator (311) is preferably made of polyethylene.

In the representation of FIG. 2, the first guide (31) also includes a first support (312). The first support (312) is intended to be fixed to a first bar which is itself fixed to a support. In the representation of FIG. 2, the first guide (31) comprises a shutter (10). The shutter (10) is arranged so as to restrict access to the cavity (20) by partially closing the opening (30). The shutter (10) is fixed to the first support (312). The shutter (10) is preferably a planar element. The shutter (10) is preferably a washer.

In the representation of FIG. 2, the first guide (31) also comprises a metal spring (313) which is at a fixed potential and which is screwed on one side onto an external thread of the first support (312) and of a other side in an internal thread of the first insulator (311). This metal spring (313) is capable of bending when a determined force is exerted on said first section of electric fence wire (1). The metal spring (313) is partially housed in the cavity (20).

In the representation of FIG. 2, the first guide (31) also comprises an electrode (314) which is in electrical contact with the first section of electric fence wire (1) and which is at an electrical potential different from the metal spring ( 313). This electrode (314) has a first lower part (3141) which completely surrounds the metal spring (313) so that an electrical contact is generated between the electrode (314) and the metal spring (313) when the latter bends following a determined force exerted on the first section of electric fence wire (1), regardless of the direction in which this force is exerted. The detection device does not

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- 19 shown in the figure will then detect this electrical contact. The first lower portion (3141) of the electrode (314) is partially housed in the cavity (20).

In the representation of FIG. 2, the electrode (314) has a second upper part (3142) which partially surrounds the outside of the clamping head (3112). Preferably, the second upper part of (3142) of the electrode projects relative to a free end (320) of the first insulator (311). The guide (31) is thus particularly capable of discouraging an individual who wishes to manipulate the first guide by unscrewing the clamping head (3112) of the first insulator (311) to access its interior. The free end (320) which is thus protected by the tension in the second upper part of (3142) of the electrode is the end of the first insulator (311) which is opposite to the first support (312) on the first guide (31).

FIG. 3 illustrates an electric fence system for protecting a perimeter site determined against an intrusion according to an embodiment of the invention.

In the representation of FIG. 3, the electric fence system comprises six sections of electric fence wire (2), (2A), (2B), (2C), (2D) and (1) essentially parallel and arranged consecutively with essentially horizontally, in this order, at strictly increasing heights. Each of the sections of electric fence wire (1), (2), (2A), (2B), (2C) and (2D) is electrically connected to an electric generator not shown in the figure. The number of sections of electric fence wire shown in FIG. 3 is not limiting of the scope of this embodiment of the invention. For example, there may be at least eight wires, preferably at least 12 wires.

According to an embodiment of the invention, several of these sections of electric fence wire are connected together so as to be part of the same electric fence wire.

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- In the representation of FIG. 3, the electric fence system comprises the first bar (11) and a second bar (12) fixed to each other. The first bar (11) is preferably fixed to an upper end of the second bar (12) According to one embodiment of the invention, more than two bars are part of the electric fence system.

In the representation of Figure 3, the first and second bars (11) and (12) are straight and rigid. They can be made of conductive material. Their directions form an angle of about 135 degrees. The second bar (12) is arranged essentially vertically so that each of its points is at a height less than the height of each of the points of the first bar (11). In addition, the second bar (12) is extended at its ends by directional elements orthogonal to its direction. Fixing means (22) are applied to these elements so as to fix the whole structure of the two bars (11) and (12) to a pole (51) of direction essentially similar to the direction of the second bar (12). In one embodiment of the invention, this post is fixed to the ground and is part of an electric fence or a mesh arranged on the outside of the perimeter to be protected and spaced from the second bar.

In the representation of FIG. 3, a first guide (31) supports the first section of electric fence wire (1) and is mechanically coupled to the first bar (11). The details concerning this first guide are not shown in FIG. 3, but it will be accepted that it is a first guide as shown in FIG. 2. According to an embodiment of the invention, more such a guide is part of the electric fence system.

In the representation of FIG. 3, five first additional guides are shown, each comprising an insulator (321), (321 A), (321 B), (321 C) and (321D) respectively and a support (322),

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- 21 (322A), (322B), (322C) and (322D) respectively. According to an embodiment of the invention, more than five additional guides are part of the electric fence system.

In the representation of FIG. 3, the insulators (321), (321 A), (321 B), (321C) and (321 D) are mechanically coupled to the supports (322), (322A), (322B), (322C) and (322D) which are themselves mechanically coupled to the second bar (12). The insulators (321), (321 A), (321 B), (321 C) and (321 D) respectively support the sections of electric fence wire (2), (2A), (2B), (2C) and (2D). The distance between two of these guides is preferably less than 50 centimeters, more preferably less than 40 centimeters, more preferably less than 30 centimeters, and even more preferably less than 20 centimeters. In this way, the distance two of the sections of electric fence wire (2), (2A), (2B), (2C) and (2D) consecutive is preferably less than 50 centimeters, more preferably less than 40 centimeters , more preferably less than 30 centimeters, and even more preferably less than 20 centimeters. The distance between the sections of electric fence wire (1) and (2D) is preferably less than 50 centimeters.

FIG. 4 illustrates an electric fence system for protecting a site with a determined perimeter against an intrusion according to an embodiment of the invention.

In the representation of FIG. 4, the electric fence system according to one of the embodiments of the invention comprises seven sections of electric fence wire (1), (2), (3), (2A), (3A) , (2B) and (3B) arranged essentially horizontally, consecutively in this order and at strictly decreasing heights. Each of the sections of electric fence wire (1), (2), (2A) and (2B) is electrically connected to an electric generator not shown in the figure. Each of the sections of electric fence wire (3), (3A) and (3B) is at a different electrical potential.

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- 22 sections of electric fence wire (1), (2), (2A) and (2B). For example, they can be grounded. The number of sections of electric fence wire shown in FIG. 4 is not limiting of the scope of this embodiment of the invention. According to an embodiment of the invention, some of the sections of electric fence wire are connected together so as to be part of the same electric fence wire.

In the representation of Figure 4, the electric fence system comprises a first bar (11), a second bar (12) and a third bar (13). It also includes five other bars (11 A), (11 B), (11C), (12A) and (13B). The representation in Figure 4 is not limiting on the number of bars forming part of the electric fence system.

In the representation of FIG. 4, the bars (11), (11 A), (11 B), (11 C), (12), (13), (12A) and (13A) are straight and rigid. The bars (11), (11 A), (11 B) and (11 C) are similar and can be made of any material. The bars (12), (13), (12A) and (13A) are similar and made of an electrical insulating material, for example fiberglass. The following pairs of bars are mechanically attached to each other: (11,12), (11 A, 13), (11 B, 12A), (11 C, 13A). The directions of the two bars in each of the previous pairs form an angle of about 135 degrees. The bars (12), (13), (12A) and (13A) are arranged essentially parallel and essentially vertically, so that each of the points of one of these bars is at a height less than the height of each of the points of the bars (11), (11 A), (11 B) and (11 C). The bars (11), (11 A), (11 B) and (11 C) are arranged essentially parallel. The structures formed by the pairs of bars (11,12), (11 A, 13), (11 B, 12A), (11 C, 13A) are thus similar and arranged along the perimeter so as to be spaced apart. others.

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- 23 In the representation of FIG. 4, fixing means (22) are applied to the bars (12), (13), (12A) and (13A) so as to fix them to poles (51) of directions essentially similar to the direction of the bars (12), (13), (12A) and (13A). In one embodiment of the invention, the details of which are not shown in FIG. 4, these posts are fixed to the ground and form part of an electric fence or a mesh arranged on the outside of the perimeter to be protected and spaced from bars (12), (13), (12A) and (13A).

In the representation of FIG. 4, guides (31), (31 A), (31 B) and (31C) support the first section of electric fence wire (1) and are mechanically coupled to the bars (11), ( 11 A), (11 B) and (11 C) respectively. The details concerning these four guides are not shown in FIG. 4, but it will be accepted that they are guides adapted according to the invention and the representation of which corresponds to FIG. 2. The representation of FIG. 4 does not is not limiting on the number of such guides forming part of the electric fence system.

Thus, when an ill-intentioned individual attempts to enter the protected perimeter by passing through the upper part of the electric fence system, if he exerts a significant force on the section of electric fence wire (1), for example trying to move it aside, if it tries to cut them, or even, if it exerts a significant force on one of the guides (31), (31 A), (31 B) or (31 C) trying to cross the electric fence system, the detection device not shown in the figure will alert the persons concerned of the intrusion.

In the representation of FIG. 4, the system according to the invention comprises a plurality of second guides (32), (33), (34), (35), (32A), (33A), (34A), (35A ), (32B), (33B), (34B), (35B), (32C), (33C), (34C), (35C), (32D), (33D), (34D), (35D), (32E), (33E), (34E) and (35E). The representation of FIG. 4 is not limiting on the number of such guides

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- 24 additional metallic components of the electric fence system.

A first guide as shown in Figure 2 can be called "EMIO". A second guide 32 as shown in Figure 4 can be called ECSTD.

In the representation of FIG. 4, the metal guides (32), (33), (32C) and (33C) support the section of electric fence wire (2) and are in electrical contact with the latter. The metal guides (34), (35), (34C) and (35C) support the section of electric fence wire (3) and are in electrical contact with the latter. The metal guides (32A), (33A), (32D) and (33D) support the section of electric fence wire (2A) and are in electrical contact with the latter. The metal guides (34A), (35A), (34D) and (35D) support the section of electric fence wire (3A) and are in electrical contact with the latter. The metal guides (32B), (33B), (32E) and (33E) support the section of electric fence wire (2B) and are in electrical contact with the latter. The metal guides (34B), (35B), (34E) and (35E) support the section of electric fence wire (3B) and are in electrical contact with the latter.

In the representation of FIG. 4, the metal guides (32), (34), (32A), (34A), (32B) and (34B) are mechanically coupled to the second bar (12). They are arranged consecutively in this order on this bar (12) at strictly decreasing heights and in a direction essentially orthogonal to the direction of the bar (12), alternately in a first direction (91) and a second direction (92) in this direction, this second direction (92) being essentially opposite to the first direction (91). The metal guides (33), (35), (33A), (35A), (33B) and (35B) are mechanically coupled to the third bar (13). They are arranged consecutively in this order on this bar (13) at strictly decreasing heights and in a direction essentially orthogonal to the direction of the bar (13), alternately in the second

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- 25 directions (92) and the first direction (91) in this direction. The metal guides (32C), (34C), (32D), (34D), (32E) and (34E) are mechanically coupled to the bar (12A). They are arranged consecutively in this order on this bar (12A) at strictly decreasing heights and in a direction essentially orthogonal to the direction of the bar (12A), alternately in the first direction (91) and the second direction (92) in this direction. The metal guides (33C), (35C), (33D), (35D), (33E) and (35E) are mechanically coupled to the bar (13A). They are arranged consecutively in this order on this bar (13A) at strictly decreasing heights and in a direction essentially orthogonal to the direction of the bar (13A), alternately in the second direction (92) and the first direction (91) in this direction. In particular, the metal guides (32), (35), (32C) and (35C) are arranged in the first direction (91).

In an embodiment of the invention illustrated by FIG. 4, the metal guides (32), (33), (34), (35), (32A), (33A), (34A), (35A), (32B), (33B), (34B), (35B), (32C), (33C), (34C), (35C), (32D), (33D), (34D), (35D), (32E ), (33E), (34E) and (35E) are different from guides (31), (31 A), (31 B) or (31C). In particular, each of these metal guides is formed of a metal wire and is mechanically coupled to one of the bars (12), (13), (12A) and (13A) by means of a plurality of rings surrounding the bar. . In particular, each of these metal guides includes two loops through which passes the section of electric fence wire that it supports.

In the representation of FIG. 4, the metal guides (32), (33), (32C) and (33C) are arranged at essentially equal heights. The metal guides (34), (35), (34C) and (35C) are arranged at essentially equal heights. The metal guides (32A), (33A), (32D) and (33D) are arranged at essentially equal heights. The metal guides (34A), (35A), (34D) and (35D) are arranged at essentially equal heights. The metal guides (32B), (33B),

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- 26 (32E) and (33E) are arranged at essentially equal heights. The metal guides (34B), (35B), (34E) and (35E) are arranged at essentially equal heights. In addition, the distance between two metal guides arranged consecutively on the same bar is preferably less than 50 centimeters, more preferably less than 40 centimeters, more preferably less than 30 centimeters, and even more preferably less than 20 centimeters. In this way, the distance two of the sections of consecutive electric fence wire (2), (3), (2A), (3A), (2B) and (3B) is preferably less than 50 centimeters, more preferably of less than 40 centimeters, more preferably less than 30 centimeters, and even more preferably less than 20 centimeters. The distance between the sections of electric fence wire (1) and (2) is preferably less than 50 centimeters.

As a consequence of the previous description and according to the particular embodiment of the invention presented through FIG. 4, the section of electric fence wire (2) passes successively from a first side of the corresponding second bar (12) in the first direction (91), a second side of the third bar (13) corresponding to the second direction (92), a first side of the bar (12A) corresponding to the first direction (91) and a second side of the bar (13A) corresponding to the second direction (92). The electric fence wire section (3) passes successively, meanwhile, from a second side of the second bar (12) corresponding to the second direction (92), from a first side of the third bar (13) corresponding in the first direction (91), a second side of the bar (12A) corresponding to the second direction (92) and a first side of the bar (13A) corresponding to the first direction (91). Thus, by applying a similar reasoning to the sections of electric fence wire (2A), (3A), (2B) and (3B), we deduce two successive sections of electric fence wire from (2), (3) , (2A), (3A), (2B) and (3B) are included in

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- 27 intersecting vertical planes between two consecutive bars among (12), (13), (12A) and (13A).

As a consequence of the above and according to the particular embodiment of the invention presented through FIG. 4, if an ill-intentioned individual attempts to enter the protected perimeter by spreading the sections of electric fence wire (2 ), (3), (2A), (3A), (2B) and (3B) in such a way as to make their way through the electric fence system, it will create an electrical contact between one of the sections of electric fence wire. (2), (2A) or (2B) and one of the sections of electric fence wire (3), (3A) or (3B) that the detection device not shown in the figure will locate. An alert device not shown but preferably arranged in the system can then perform at least one of the following actions: direct a surveillance camera towards the area where an electrical contact has been detected, activate lighting in this area and send a message to a electronic device such as a central alarm, computer, telephone or mobile phone.

In an embodiment of the invention shown in FIG. 4, the electric fence system further comprises conductive metallic elements (41), (42), (41 A), (42A), (41 B), ( 41C), (42B), (41 D), (42D), (41E), (43), (44), (43A), (44A), (43B), (43C), (44B), (43D ), (44D) and (43E). Preferably, each of these conductive metallic elements is a spring wound around one of the bars (12), (13), (12A) and (13A), and disposed between two of the consecutive metallic guides (32), (33), (34), (35), (32A), (33A), (34A), (35A), (32B), (33B), (34B), (35B), (32C), (33C), (34C ), (35C), (32D), (33D), (34D), (35D), (32E), (33E), (34E) and (35E) on this bar, so as to be in electrical contact with one and only one of these metal guides and to be at a distance from the other, for example 25 millimeters. The representation of FIG. 4 is not limiting on the number of such conductive elements forming part of the electric fence system.

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- 28 The conductive elements according to the embodiment shown in FIG. 4 then make it possible to activate the detection system if an individual attempts to remove two of the sections of consecutive electric fence wire from (2), (3), ( 2A), (3A), (2B) and (3B) by bringing two metallic guides consecutively arranged on the same bar, since there will be an electrical contact between these two metallic guides via the metallic conductive element without they should not touch each other and this electrical contact will then be immediately detected by the detection device.

In summary, the invention relates to an electric fence system for intelligent protection of a site with a defined perimeter against an intrusion. The system comprises at least one section of electric fence wire (1) which is arranged along at least part of said perimeter, which is electrically powered and which is supported by at least one guide (31). This guide (31) comprises at least one hollow insulator (311), an electrically conductive elastic element (313) placed at least partially inside the insulator (311) and a conductive element (314) being in electrical contact with the electric fence wire section (1) and at least partially surrounding the elastic element (313) while being at an electric potential different from the latter. The elastic element (313) is capable of bending when a determined force is exerted on the section of electric fence wire (1), thus generating electrical contact with the conductive element (314). This electrical contact can then be picked up by a detection system.

Once again, we would like to emphasize that the present invention has been described in relation to specific embodiments, which have a purely illustrative value and should not be considered as limiting. In general, it will be obvious to a person skilled in the art that the present invention is not limited to

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- 29 examples illustrated and / or described above. The invention includes each of the new features and all of their combinations.

The presence of reference numbers in the drawings cannot be considered to be limiting, including when these numbers are indicated in the claims.

The use of the verbs "to understand", "to include", "to include", or any other variant, as well as their conjugations, cannot in any way exclude the presence of elements other than those mentioned.

The use of the indefinite article "a", "an", or of the definite article "the", "the" or "I", to introduce an element does not exclude the presence of a plurality of these elements.

Claims (16)

1. Electric fence system for protection of a perimeter site determined against an intrusion, comprising: - an electric generator; - a first section of electric fence wire (1) which is disposed along at least part of said perimeter and which is electrically connected to said electric generator; - A first bar (11), a first half (111) of which is capable of being fixed to a support (12) disposed along said perimeter; - a first guide (31) which supports said first section of electric fence wire (1) and which is mechanically coupled to said first bar (11); characterized in that - Said first guide (31) comprises a first hollow insulator (311) which supports said first section of electric fence wire (1); - Said first guide (31) comprises a first support (312) which is fixed to a second half (112) of said first bar (11); - said first guide (31) comprises an elastic element (313) which is electrically conductive, which is placed at least partially inside said first insulator (311) and which is mechanically coupled both to said first insulator (311) and said first support (312); - said first guide (31) comprises a conductive element (314) which is in electrical contact with said first section of electric fence wire (1); - Said conductive element (314) has a first part (3141) which at least partially surrounds said elastic element (313); - The electric fence system is arranged so that said conductive element (314) is at an electrical potential different from said elastic element (313); BE2017 / 5467 - The electric fence system is arranged so that said elastic element (313) is able to bend when a determined force is exerted on said first section of electric fence wire (1), so as to generate an electrical contact between said elastic element (313) and said first part (3141) of said conductive element (314); - The electric fence system comprises a detection device arranged to detect an electrical contact between said conductive element (314) and said elastic element (313). 2. Electric fence system according to claim 1, characterized in that said conductive element (314) is electrically isolated from said first support (312) when said first section of electric fence wire (1) is awaiting said determined force. 3. Electric fence system according to any one of the preceding claims, characterized in that said elastic element (313) is a metal spring screwed on one side to a thread of said first support (312) and on the other side to a thread of said first insulator (311). 4. An electric fence system according to any one of the preceding claims, arranged so that said elastic element (313) is at a fixed potential, for example earth. 5. An electric fence system according to any one of the preceding claims, characterized in that said conductive element (314) is metallic. 6. Electric fence system according to any one of the preceding claims, characterized in that said first part BE2017 / 5467 - 32 (3141) of said conductive element (314) goes around said elastic element (313). 7. An electric fence system according to any one of the preceding claims, characterized in that said conductive element (314) comprises a second part (3142) projects beyond a free end (320) of said first insulator (311). 8. Electric fence system according to any one of the preceding claims, characterized in that said first insulator (311) comprises a polyethylene body (3111) and a clamping head (3112) which supports said first section of fence wire electric (1). 9. Electric fence system according to claim 8 when it depends on claim 7, characterized in that said second part (3142) of said conductive element (314) at least partially surrounds said clamping head (3112) of said first insulator ( 311). 10. Electric fence system according to any one of the preceding claims, characterized in that said first insulator (311) encloses said elastic element (313) and said first part (3141) of said conductive element (314). 11. Electric fence system according to any one of the preceding claims, characterized in that said support (12) is a wall, a trellis, an electric fence, a barrier, a post or a bar. 12. System according to any one of the preceding claims, further comprising an alert device connected to said detection device and arranged to perform at least one of the following actions BE2017 / 5467 - 33 when said detection device detects an electrical contact between said conductive element (314) and said elastic element (313): - pilot surveillance cameras; - send a signal to an electronic device such as a central alarm, a computer, a telephone or a mobile telephone; - Activate lighting, preferably directed towards the place where said electrical contact between said conductive element (314) and said elastic element (313) occurs. 13. Electric fence system according to any one of the preceding claims, characterized in that said electric generator is capable of supplying a voltage between 7000 and 8000 Volt to said first section of electric fence wire (1). 14. Electric fence system according to any one of the preceding claims, characterized in that said support (12) is a second bar, in that the system further comprises: - a second section of electric fence wire (2) which is arranged along at least part of said perimeter and which is electrically connected to said electric generator; - a second insulator (321) which supports said second section of electric fence wire (2); - a second support (322) which is mechanically coupled to said second insulator (321) and to said second bar (12); - a first stop (325) which is mechanically coupled to said second support (322); and in that it is arranged so that - Said first stop (325) is at an electrical potential different from said second section of electric fence wire (2); BE2017 / 5467 - said first stop (325) comes into electrical contact with said second section of electric fence wire (2) when a determined direction and intensity force acts on it; - Said detection device is capable of detecting an electrical contact between said first stop (325) and said second section of electric fence wire (2). 15. Electric fence system according to any one of claims 1 to 13, characterized in that said support (12) is a second electric insulating bar, in that the system further comprises: - a third electrical insulating bar (13) which is arranged along said perimeter in a direction essentially similar to the direction of said second bar (12); - a second section of electric fence wire (2) which is arranged along at least part of said perimeter and which is electrically connected to said electric generator; - a third section of electric fence wire (3) which is disposed along at least part of said perimeter; - a second metal guide (32) which satisfies the following properties: • it is mechanically coupled to said second bar (12); • it is arranged in a direction essentially orthogonal to the direction of said second bar (12) and in a first direction (91) in this latter direction; • it supports said second section of electric fence wire (2); • it is in electrical contact with said second section of electric fence wire (2); - a third metal guide (33) which satisfies the following properties: BE2017 / 5467 • it is mechanically coupled to said third bar (13); • it is arranged in a direction essentially orthogonal to the direction of said third bar (13) and in a second direction (92) in the latter direction, said second direction (92) being essentially opposite to said first direction (91); • it supports said second section of electric fence wire (2); • it is in electrical contact with said second section of electric fence wire (2); - a fourth metal guide (34) which satisfies the following properties: • it is mechanically coupled to said second bar (12); • it is offset from said second metal guide (32) on said second bar (12); • it is arranged in a direction essentially orthogonal to the direction of said second bar (12) and in said second direction (92) in this latter direction; • it supports said third section of electric fence wire (3); • it is in electrical contact with said third section of electric fence wire (3); - a fifth metal guide (35) which satisfies the following properties: • it is mechanically coupled to said third bar (13); • it is offset from said third metal guide (33) on said third bar (13); • it is arranged in a direction essentially orthogonal to the direction of said third bar (13) and in said first direction (91) in this latter direction; • it supports said third section of electric fence wire (3); • it is in electrical contact with said third section of electric fence wire (3); BE2017 / 5467 - 36 and in that it is arranged so that - Said third section of electric fence wire (3) is at an electrical potential different from said second section of electric fence wire (2); 5 - said detection device is capable of detecting electrical contact between said third section of electric fence wire (3) and said second section of electric fence wire (2). 16. Electric fence system according to claim 15, 10 further comprising a metallic element (41) which is in electrical contact with said fourth metallic guide (34) and which extends along said second bar (12) from said fourth metallic guide (34) towards said second metallic guide (32).