Automatic opening and closing gate

Abstract

The present invention relates to gates with automatic opening and closing. The gate, according to the invention, with automatic opening and closing for a passage Pas bounded by two posts 11, 12, comprises a leaf 21, motorized means 30 for controlling the movement of the leaf between a position P1 and a position P2 and vice versa, two video cameras 41, 42 capable of delivering signals representative of the images filmed by them, a camera 41 arranged so that its field of vision Cv1 encompasses at least a part of the space occupied by the leaf 21 when it is in its positions P and P2 and the space it sweeps when it passes from one of these positions to the other, and means 50 for processing the control signals of the two cameras 41, 42 and means 30 for controlling the stopping of the leaf in case of risk of incident.

Description

Description Title of the invention: Automatic opening and closing gate technical field

[0001] The present invention relates to automatic opening and closing gates.

[0002] — Automatic opening and closing gates must meet standards which impose an obligation of result, and also standards that define rules of safety. In particular, such an automatic gate must not shear, pinch, or nor be able to crush, nor to drag anyone away.

[0003] — The automatic gates currently available on the market meet the requirements of These standards, however, may still not address all the risks. of incidents that may occur. This is the case, in particular but not exclusively, large gates, and more specifically those made of bars spaced apart and which, in certain positions, especially when They are in their open position, positioned behind ornate grilles.

[0004] For example, if a person has passed an arm through the grille and the gate at bars, his arm can be "severed" if, at that moment, the gate is remotely controlled to change position, in particular towards its closing position.

[0005] — However, there is currently no truly industrial automatic gate with security systems that can prevent this type of incident.

[0006] — Therefore, the present invention aims to create an automatic gate which largely mitigates the drawbacks mentioned above. Definition of the invention

[0007] — More specifically, the present invention relates to a gate with an opening and automatic closures for a passage located on a floor, the passage being bounded by at minus two uprights fixed to the ground in a substantially vertical position, comprising: at least one leaf and motorized controllable means capable of deliver control signals to control the movement of the leaf between a first position and a second position and conversely, the first position being the one in which the leaf completely blocks the passage and the second position being that in which the leaf releases the passage, the gate being characterized by the the fact that it also includes: a first video camera capable of delivering first signals representative of the images filmed by this first camera; of the first methods for fixing the first camera approximately at the top of the first upright, the one that is furthest from the door leaf when it is in its second position, the first camera being arranged so that its field of vision encompasses at minus a portion of the space that can be occupied by the door leaf when it is in its first position, the space that can be occupied by the leaf when it is in its second position and the space it sweeps when it moves from one of these positions to the other; a second video camera capable of delivering second signals representative of the images filmed by this second camera; second means for fixing the second camera substantially at the top of the second post, the one which is in an area located between the first and second positions which the said leaf can take, the second camera being arranged so that its field of vision encompasses at least a part of the space which can be occupied by the leaf when it occupies its first position; and means for processing the control signals, the first signals and the second signals, and delivering an alarm signal. Description of the figures Other features and advantages of the invention will become apparent from the following description given in relation to the accompanying drawings, which are by way of illustration but in no way limiting, in which: Figure [Fig. 1] represents a schematic front view of a first embodiment of the automatic gate according to the invention, of the "sliding leaf" type, applying the invention. Figure [Fig. 2] represents a schematic top view of the automatic gate according to the embodiment illustrated in Figure [Fig. 1]. Figure [Fig. 3] represents a schematic top view of a functional block diagram of the portal in the case of a sliding leaf. Figure 4 shows a schematic top view of a second embodiment of the automatic gate according to the invention, of the "two pivoting leaves" type, implementing the invention, and Fig. 5 represents a schematic front view of the automatic gate according to the embodiment illustrated in Fig. 4. Warning It is first clarified that, across all figures, the same references designate the same elements, regardless of the figure in which they appear and regardless of the form in which those elements are represented. Similarly, if elements are not specifically referenced in one of the figures, their references can easily be found by referring to another figure. It is further specified that, when, according to the definition of the invention, the object of the invention comprises “at least one” element having a given function, the described embodiment may comprise several of these elements. Conversely, if the embodiment of the object according to the invention as illustrated comprises several elements with identical functions, and if the description does not specify that the object according to this invention must necessarily comprise a particular number of these elements, then the described embodiment may not be a specific embodiment. elements, the object of the invention can be defined as comprising “at least one” of these elements. It is specified that when, in this description, an expression defines by itself, without any particular specific mention concerning it, a set of structural characteristics, these characteristics may be taken, for the definition of the object of the protection sought, when this is technically possible, either separately, or in total and / or partial combination. It is further specified that, in the present description, if the adverb “sensiblement” is associated with a qualifier of a given means, this qualifier must be understood in the strict or approximate sense. Description of embodiments of the portal according to the invention. The present invention relates to a gate with automatic opening and closing of a passage Pas located on a ground So, this passage being bounded by at least two posts 11, 12 fixed to the ground in a substantially vertical position. Figures 1 and 2 schematically illustrate a first embodiment of the automatic gate according to the invention, figures 4 and 5 schematically illustrate a second embodiment of the gate according to the same invention, and [Fig.3] is a functional block diagram of the gate according to the first embodiment. The gate comprises: at least one leaf 21 and controllable motorized means 30, known in themselves by prior art automatic gates, capable of delivering control signals to control the movement of the leaf between a first position P1 and a second position P2, and vice versa. The first position P1 is that in which the leaf 21 completely closes the passage Pas (closure) and the second position is that in which this leaf releases the passage (opening). According to one feature of the invention, the gate comprises: a first video camera 41 capable of delivering, preferably continuously, first signals representative of the images filmed by this first camera, and first means for fixing this first camera 41 substantially at the top of the first post 11 (or in the very close vicinity thereof), the one which is furthest from the leaf 21 when it is in its second position P2 (opening). This first camera 41 is further arranged so that its field of vision Cvl (or depth of field) encompasses at least the lotal space constituted by the sum of a part of the space that can be occupied by the leaf 21 when it is in its first position PI, the space that can be occupied by the leaf when it is in its second position P2 and the space that this leaf sweeps when it passes from one of these positions to the other. In the figures, the two projections of the envelope of this Cv1 field of vision of the first camera 41, respectively in a vertical plane (figures 1 and 5) and in a horizontal plane (figures 2 and 4), are represented by a continuous line on which arrows are marked. The gate also includes a second video camera 42 capable of delivering second signals representative of the images filmed by this second camera and second means for fixing this second camera substantially at the top of the second post 12 (or in the vicinity), the one which is located in an area between the first position PI and the second position P2 which the gate leaf 21 can take. The second camera 42 is arranged so that its field of vision Cv2 (or depth of field) encompasses at least part of the space that can be occupied by the leaf 21 when it occupies its first position P1. In the figures, the two projections of the envelope of this field of vision Cv2 of the second camera 42, respectively in a vertical plane ([Fig.1] and 5) and in a horizontal plane (figures 2 and 4), are represented by a discontinuous line of dotted lines. Also planned are means 50 to process the control signals, the first signals and the second signals and to deliver an alarm signal. For the purposes of this invention, an alarm signal is understood to mean any signal which can, for example, stop the movement of the leaf between its two positions P1, P2 in case of a risk of incident, namely an accident, prevent the movement of the leaf between its two positions P1, P2, in particular following the intrusion of a foreign object in its path, send an alarm email message, produce a remote audible and / or visual warning alarm, etc. Advantageously, since the height of the door leaf relative to the ground, So, has a given value, HP, the means for fixing the cameras 41, 42 approximately at the top of the uprights 11, 12 are arranged so that these cameras are located at a height, relative to the ground, at least equal to this given value, HP, and even, very optionally, greater than this given value. In this way, the field of view of each video camera being a downward field of view, it more easily encompasses all the spaces defined above. One embodiment of the gate described above has been more particularly illustrated in Figures 1 to 3, in the application of the invention to a known gate of the "sliding leaf" type. This type of gate generally has only one leaf. However, it is clear that if it had two leaves sliding in opposite directions, the invention would apply twice, in the same way as described above, by symmetry. The invention can also be applied, as shown in Figures 4 and 5, to a gate of the "swing leaf" type, the leaf being mounted to pivot substantially about one of the two uprights 11, 12. More commonly, such a gate will have two leaves 21, 22 respectively mounted pivoting substantially relative to the two uprights. In this case of a double swing gate, the two video cameras 41, 42 are arranged so that the field of view Cv1, Cv2 of each camera encompasses at least part of the space that can be occupied by the leaf 21, 22 which is associated with the post on which the other camera is mounted and when it is in its first position PI, the space that can be occupied by this same leaf when it is in its second position P2 and the space (in an arc of a circle 61, 62, for example 90 degrees) that this leaf sweeps when it passes from one of these positions to the other. In a manner known in itself, the two video cameras 41, 42 are arranged to perform pattern recognition, namely capable of detecting a foreign body introduced unexpectedly into their field of vision, and in this case deliver at their output an alert signal capable of being processed by the means 50. These means 50 for processing the control signals, the first signals and the second signals and for controlling the stop of the movement of the leaf between its two positions P1, P2 in case of intrusion of an unwanted body and therefore risk of incident, include a programmable CPU processing unit, well known in itself. The presence of the two video cameras offers a significant advantage because the combination of their fields of vision allows them to encompass the entire space that at least one leaf 21, 22 can occupy when it is in its first position P1. As can be seen in the figures, there is therefore no undetected or unvisualized dead zone between the two uprights 11, 12. It should be noted that the representation of the fields of view Cv1 and Cv2 of cameras 41 and 42 in the figures is schematic to illustrate the features of the invention and is spatially limited to indicate the minimum dimensions of these fields. However, these fields can of course have greater ranges than those shown in these figures. It is specified that, by leaf, in the sense of the present invention, is included any kind of leaf, such as for example a single piece leaf, telescopic type leaves, accordion type leaves, leaves that can slide on rail and pivot, cantilevered, self-supporting, on casters, facing each other, in any material, of all shapes, etc. It is also specified that the automatic gate according to the invention may also include all the security systems of automatic gates of the prior art, such as photosensitive cells mounted in cooperation with light beams, light and / or sound warnings indicating the movement of the leaf(s), etc. Upon reading the description of the invention above, it is clear that a automatic gate having a structure according to this invention certainly prevents shearing, pinching, crushing and entanglement of any bodies of any kind whatsoever, i.e. persons and / or objects, when it passes from one of its positions (P1, P2) to the other.

Claims

Claims

1. Automatic opening and closing gate for a passage (Steps) located on a floor (So), said passage being bordered by at least two uprights (11, 12) secured to said floor in a substantially vertical, comprising * at least one leaf (21), * controllable motorized means (30) capable of delivering signals control to control the movement of said leaf between a first position (P1) and a second position (P2) and vice versa, the first position being that in which the leaf completely closes the passage (Step) and the second position being that in which the leaf clears the way, characterized by the fact that it further comprises: and a first video camera (41) capable of delivering first signals representative of the images filmed by this first camera, * first means for fixing the first camera substantially at the top of the first amount (11), the one furthest from the leaf (21) when the latter is in its second position (P2), said first camera (41) being arranged so that its field of vision (Cv1) encompasses at least part of the space which may be occupied by said leaf (21) when it is in its first position (P1), the space which can be occupied by said leaf when it is in its second position (P2) and the space it sweeps when it moves from one of these positions to the other, * a second video camera (42) capable of delivering second signals re- presentations of the images filmed by this second camera, "second means for fixing the second camera substantially at the top of the second amount (12), the one located in an area located between the first position (P1) and the second position (P2) that can take said leaf (21), said second camera (42) being arranged so that its field of vision (Cv2) encompasses at least part of the space which can be occupied by said leaf (21) when it occupies its first position (P1), and "means (50) for processing the control signals, the first signals and the second signals and deliver an alarm signal.

2. Gate according to claim 1, characterized in that, the height of the leaf relative to the ground having a given HP value, the means for fixing the cameras (41, 42) substantially at the top of said uprights (11, 12) are arranged so that these cameras are located at a height, for report to said soil (So), at least equal to said given value HP, option- ally greater than this said given value.

3. Gate according to one of claims 1 and 2, characterized in that it finds an application for a leaf (21) sliding in a plane.

4. Gate according to one of claims 1 and 2, characterized in that it finds an application for at least one leaf (21, 22) mounted pivotally substantially relative to one of the two uprights (11, 12).

5. Gate according to claim 4, characterized in that it comprises two leaves (21, 22) mounted respectively pivoting substantially compared to the two amounts.

6. Gate according to claim 5, characterized in that the two said video cameras (41, 42) are arranged so that the field of vision (Cv1, CÇCv2) of each camera encompasses at least part of the space that can be occupied by the leaf (21, 22) which is associated with the amount on which the other camera is mounted and when the said leaf is in its first position (P1), the space which can be occupied by this said leaf when it is in its second position (P2) and the space that this said leaf sweeps when moving from one of these positions to the other.

7. Gate according to one of the preceding claims, characterized by the fact that the two said video cameras (41, 42) are arranged to carry out pattern recognition.

8. Gate according to one of the preceding claims, characterized by the fact that the means (50) for processing the control signals, the first signals and second signals, and to emit an alarm signal, include a programmable CPU processing unit.

9. Gate according to one of the preceding claims, characterized by the fact that the vision spaces (Cv1, Cv2) of the two cameras (41, 42) re- cover all the space that can be occupied by at least one said leaf (21, 22) when it is in its first position (P1).