EP0423016A1 - Control method and system for entrance or exit - Google Patents

Abstract

The installation is comprised of a gate of which the leaf (3) is supported by a vertical shaft (5) rotationaly driven by motor (9) servo-controlled by a control system which includes a photoelectric cell capable of detecting the penetration of a person in a corresponding passage, in the authorized direction, in order to make the shaft (5) of the gate turn in the opening direction. The installation is also comprised of a central system for managing the operation of the gate and for actuating the motor (9) in one direction and in the opposite direction, and such managing system is servocontrolled by electromechanically control means (17) for both directions of rotation of the shaft (5) of the gate (2) as well as for the angular position of said shaft. In the case of rotation of the gate in an unauthorized direction, while the gate was previously closed or during its opening, this managing system is capable of controlling on the one hand the operation of a warning apparatus and on the other hand maintaining in operation or setting in operation a device (13, 14) for braking the shaft (5) of the gate, such braking device being capable of slowing down the shaft through out its rotation in the unauthorized direction while allowing such rotation under the effect of a pushing force exceeding a predetermined value.

Description

The present invention relates to control installations intended to be installed in an access or exit passage of a given place. Such facilities are used in particular to control access to a sales store, to a boarding area at an airport, etc., by authorizing passage only in the only intended direction of circulation.

More specifically, the present invention relates to installations of this type comprising a control gate whose leaf forming a barrier is carried by a vertical shaft driven in rotation by an electric motor controlled by a control switch. In general, this is associated with a photoelectric cell arranged in the passage to be checked and the arrangement is such that the penetration of a person in the authorized direction of circulation causes the automatic closing of this contactor. The opening of such a gate therefore occurs automatically in such a case, after which the gate returns to its initial closed position after a certain time delay.

However, current gates of this kind have a certain number of drawbacks. One of these lies in the fact that in general the immobilization of the gate in its closed position is ensured by a locking mechanism of relatively complex design. Furthermore, it is necessary to provide also complex mechanical means to allow a possibility of opening known as "anti-panic", in the opposite direction to the authorized direction, in the event of an incident or event likely to create a risk of panic.

The document EP 75.806 describes a gate of this kind. The leaves of the latter are actuated by motors, the operation of which is controlled by photoelectric cells capable of detecting the penetration of a person into the controlled passage, in the authorized direction. However, the control system is simply able to then ensure the opening of the door, then its return to the closed position after a certain delay. But this system is not able to ensure other possibilities of control or prohibition of passage. Furthermore, the possibility of opening in the opposite direction in the event of panic is enabled by the simple presence of a coupling mechanism designed to yield completely under the effect of a thrust exceeding a determined value. However, the presence of such a mechanism has the disadvantage that a person wishing to exit fraudulently through an entrance passage can perfectly do so, without being hindered in anything, since it suffices to exert a sufficient push strong on the flaps of the gate. This therefore constitutes a serious drawback for a gate intended to allow passage only in one direction.

In another field, in this case that of the turnstiles limiting the passage of people one by one, the document EP 331,770 describes a turnstile comprising a drive motor which is automatically put into operation when one of the bars of this turnstile is pushed from an angle determined by a person entering the corresponding passage in the authorized direction. However, such a turnstile does not include any system allowing passage in the opposite direction in the event of a risk of panic without the intervention of personnel, who are usually obliged to put the electro-brake off. A fortiori, it does not include any system making it possible to carry out various functions of control and security in a simple way without having recourse to electromagnetic cards, etc.

This is why the present invention aims to achieve a passage control installation, of the type recalled above, which is capable of enabling different control and security functions, and capable of reconciling the two contradictory imperatives already explained, namely : on the one hand the need to allow an exceptional passage in the unauthorized direction in the event of panic risk, on the other hand, the obligation to prevent a fraudulent passage in the unauthorized direction.
To this end, the invention relates to a passage control installation, intended to be installed in a access or exit passage from a given place, comprising a gate whose leaf is carried by a vertical shaft driven in rotation by a motor controlled by a control system comprising a member capable of detecting the penetration of a person into the corresponding passage, in the authorized direction, to then rotate the gate shaft in the direction of the opening of the leaf thereof, this installation also comprising means capable of stopping this leaf in this position for the desired time , then to command the return of the latter to its closed standby position, characterized in that there is provided a central system for managing the operation of the gate and the actuation of the motor in one direction and in the other, and this management system is controlled by means of controlling one and the other direction of rotation of the gate shaft, as well as the angular position of this shaft, and, in the event of rotation of this gate in the unauthorized direction when it was previously closed or in the process of being opened, this management system is able to then command on the one hand the activation of an alarm device and on the other hand the activation a braking device of the rotary shaft of the gate which is capable of braking it during its entire rotation in the unauthorized direction while allowing this rotation under the effect of a thrust exceeding a determined value.

Thus the present installation is effectively able to allow an exceptional passage in the unauthorized direction in the event of panic risk, while preventing a person from being able to take advantage of this possibility to fraudulently pass in the unauthorized direction. Indeed, in such a case, its passage is braked and it is signaled by the warning devices, which makes it possible to carry out the desired interventions against such an attempt at passage.

However, the present invention also aims to ensure that the present invention can operate, not only under the effect of a passage detector, but also under the effect of a thrust exerted, in the right direction, by a person on the beating from this gate.

To this end, according to another characteristic, the central management system comprises a second control circuit connected in parallel to that controlling the rotation of the motor in the direction of opening of the gate under the action of the passage detector, and this second control circuit, which is controlled by the means for controlling the angular position of the gate shaft, is capable of controlling the starting of the motor in the direction of opening of the gate, when these control means detect a rotation of a determined angle of the shaft in the authorized direction, under the effect of a thrust exerted in this direction on its leaf, when it was closed.

According to another characteristic, the central management system, which is controlled by the means for controlling the rotation of the gate shaft, is capable of triggering the activation of an alarm device if there is a rotation of the 'gate shaft in one or the other direction, without the passage detecting member has detected the passage of a person in the authorized direction.

• La figure 1 est une vue en perspective d'une installation de contrôle comportant un portillon selon l'invention.
• La figure 2 est une vue en élévation et en coupe d'un tel portillon.
• La figure 3 est une vue partielle en coupe, suivant la ligne III-III de la figure 2.
• La figure 4 est une vue similaire à la figure 3, mais qui correspond à une variante de réalisation.
• Les figures 5 et 6 sont d'autres vues similaires à la figure 3, mais qui illustrent deux variantes perfectionnées de réalisation.
• La figure 7 est une vue schématique illustrant les liaisons prévues entre les diverses parties d'une autre forme de réalisation.
• La figure 8 représente le schéma simplifié du système de gestion et de commande de la présente installation.

However, other features and advantages of the subject of the invention will become apparent from the following description. This is given with reference to the accompanying drawings for information only, and in which:

• Figure 1 is a perspective view of a control installation comprising a gate according to the invention.
• Figure 2 is an elevational view in section of such a gate.
• Figure 3 is a partial sectional view along line III-III of Figure 2.
• Figure 4 is a view similar to Figure 3, but which corresponds to an alternative embodiment.
• Figures 5 and 6 are other views similar to Figure 3, but which illustrate two improved alternative embodiments.
• Figure 7 is a schematic view illustrating the connections provided between the various parts of another embodiment.
• Figure 8 shows the simplified diagram of the management and control system for this installation.

The installation shown in Figure 1 is intended to control the circulation of users in an access passage to a specific place. This passage is materialized by two parallel barriers 1, and the present installation is designed to allow circulation only in the authorized authorized direction, indicated by the arrow F. At a midpoint of this passage, a gate is provided according to the invention, which is designated by the general reference 2. The leaf 3 thereof is carried by a rotary vertical column 4. This leaf can be constituted by a bent metal tube in the form of a U lying horizontally so that in the closed position it constitutes a transverse barrier inside the controlled passage.

This leaf is intended to be moved between its two extreme positions AB and AC which correspond respectively to its closed position and to its open position. The normal direction of rotation of the shaft 4 for opening the door is therefore that of the arrow F1 shown in Figures 1 and 3. However in certain exceptional circumstances, mentioned later, this leaf can also be moved into the position reverse aperture AD shown in Figure 3.

At its base, the vertical column 4 is fixed to the projecting upper end of a rotary shaft 5 mounted inside a base formed by a casing 6. The lower end of this shaft rests on a bearing 7 and at its upper part this is guided by another bearing 8. The drive of the shaft 5 is ensured by an electric geared motor 9 via a belt 10 engaged on pulleys 11 and 12, which are secured respectively the motor shaft 9 and the shaft 5 to be driven.

An electrically operated brake is associated with the shaft 5. This electro-brake comprises on the one hand a fixed annular body 13 bolted against the upper wall of the casing 6, and on the other hand a ring 14 mounted to rotate with the shaft 5. The ring 14 is secured, via a membrane 15 and a disc 15a, with the shaft 5 and its drive pulley 12, while being axially displaceable. The fixed body 13 constitutes an electromagnet comprising a winding 16, while the ring 14 forms the corresponding movable frame, an air gap being formed between these two parts. The supply of the winding 16 creates a magnetic field which attracts the movable armature 14. The friction surfaces of the two parts 13 and 14 are therefore compressed, which ensures the braking of the shaft 5. To release the latter , it is sufficient to cut off the electrical supply, so that the movable armature 14 is no longer pressed against the fixed body 13 of the electro-brake.

As already indicated, the installation according to the invention comprises a central management and command system, which is capable of ensuring various control and security functions. This system is embodied by an electronic card, the simplified general functional diagram of which is shown in FIG. 8. This management system is controlled, among other things, by a device for controlling the angular position of the shaft 5, which device is designated by the general reference 17. As shown in FIG. 3, this device comprises two spring feelers 18 and 19 placed in contact with control cams provided at the periphery of a horizontal plate 20 secured to the shaft 5. Each of the feelers 18 and 19 is associated with a contactor 21 or 22 which is connected to the general circuit of the electronic control card 40 of the assembly (see FIG. 7).

In the example shown in Figure 3, the control cams, provided at the periphery of the plate 20, are materialized by two projecting parts 23 and 24 of circular contour, which are separated from each other by circular portions smaller diameter. The extreme fronts 25, 26, 27 and 28 of the two protruding cams 23 and 24 are intended to cause the operation of the probes 18 and 19 in one direction or the other, and this as a function of the angular position of the rotary shaft. 5. Consequently, these feelers constitute members for detecting the angular position of this shaft, which are capable of actuating the corresponding contactors 21 and 22 in certain determined angular positions of the shaft 5.

Thus, after a certain angle of rotation α in the direction of arrow F1, the probe 18 completely escapes the projecting cam 23 and acts accordingly on the contactor 21. However, this is connected in the general control circuit so in operating the drive motor 9 in the direction of opening of the door, if however this circuit is initially set for such an operating mode.

Before the gate reaches its open position AC, the rising edge 26 of the projecting cam 23 pushes the probe 19 which in turn acts on the contactor 22. However, this is connected in the general control circuit so to activate the electric brake 13-14. This operation takes place at a certain angular distance β upstream from the stop position AC. Thus, the electro-brake 13-14 first brakes the rotary shaft 5 before locking it completely in its stopped position.

The control circuit comprises an electronic logic 40 whose operation will be described later, and which ensures, by a time delay, the maintenance of the opening of the gate for a sufficient period, after which this circuit automatically controls the operation of the motor 9 in opposite direction so as to return the gate to its closed position AB. Here again, the electric brake 13-14 is put into operation at some distance from the closed position thanks to the angular position control device which is associated with the rotary shaft 5. This makes it possible to obtain a damping of the movement before the gate is again completely locked in its closed position.

The control installation shown in FIG. 1 also includes a photoelectric cell 29 disposed opposite a light projector 30 or reflector, at the entrance to the controlled passage. This cell is connected to the circuit of the general system of management so as to trigger the operation of the motor 9 in the opening direction as soon as a person presents himself at the entrance of this passage in the authorized direction of circulation, and this if the circuit is actually set for such a mode Operating.

Indeed, the design of the management and control system is such that it is possible to choose between two different modes of operation which will be described in detail later, namely:
- either an automatic operation triggered by the input cell 29,
- or a semi-automatic operation by pushing on the leaf 3 of the gate.

At the outlet end of the controlled passage, there are two photocells 31 and 32 arranged opposite two corresponding projectors. These two cells are connected in the circuit of the control system so as to control that each user passes through the exit of this passage in the authorized direction, and this after a reasonable period of time following the crossing of the gate 3. For this purpose, these two cells are connected in the control circuit so that their extinction one after the other in the desired order, and after a reasonable delay, does not cause any particular measure. On the other hand, if the extinction of these cells occurs in a reverse order, that is to say by starting with the extinction of cell 32, the arrangement of the control circuit is such that this causes the activation operation of one or more warning devices and possibly the immediate return of the gate 3 in its closed position.

The warning devices actuated by the cells 31, 32 can consist of an audible warning 33 and an indicator light 34. These two devices can be grouped in the same box 35 located near the base 6 of the gate. In addition, this box can contain a counter totaling the number of gate openings and which includes a dial 36 located on one of the faces of this box.

There are also a number of other plans security systems which will be mentioned later. In addition, the general control circuit includes a switch 37 intended to make it possible to operate the assembly according to one or the other of the two modes provided, this inverter being connected to the electronic control card 40 for controlling the assembly ( see figure 7).

FIG. 8 represents a simplified operating diagram of the management system designated by the reference number 40. Furthermore, this diagram will be described with reference to the arrangement of the gate according to FIG. 3.

The different plots in Figure 8 have the following meanings:

The first numbers of the control blocks indicate the succession of the corresponding control phases.
R = 0: the gate 3 shaft immobilized
RG = 1: rotation of the gate shaft counterclockwise
RD = 1: rotation of the gate shaft clockwise
EF = 0: electro-brake not activated
EF = 1: electro-brake actuated
T: time delay
t: delay time
K = 0: acoustic alarm not activated
K = 1: acoustic alarm activated
L = 0: visual alarm not activated
L = 1: visual alarm activated
LF = 0: flash lamp not activated
LF = 1: flash lamp activated
C: counter
cp: contact activated by the photocell
r: contact of a storage switch
c1: contactor indicating authorized rotation anti-clockwise (opening)
c2: contactor indicating an authorized clockwise rotation (closing)
c3: contactor indicating an unauthorized clockwise rotation (pushing out)
c4: contactor indicating a counterclockwise authorized rotation (towards opening after unauthorized push ⇒ then reclosing)
c5: contactor indicating an authorized anti-clockwise rotation (push to enter)

In the example illustrated in FIG. 8, the central management system allows an automatic operating mode (A) by a photoelectric cell as well as a semi-automatic operating mode (B) by pushing. The circuit corresponding to this last operating mode is connected in parallel to the basic circuit corresponding to the first operating mode and it is possible to select one or the other of these operating modes using an inverter 37 arranged upstream of the individual traces of these operating modes.

A - Automatic mode of operation by photocell: a) Normal opening and closing cycle

When the automatic operating mode is selected by putting the inverter 37 in its position A, the management system first chooses the control block

This control unit puts the gate in the standby state, which means that the gate is closed and braked by the electric brake 13-14. This starting position is designated by: A.

When the passage of an object is detected by the photocell 29-30 (see Figure 7), it sends a signal to a contact cp of the management system which then produces a second control block

est généré afin de commander une rotation anti-horaire du portillon vers la position d'ouverture de celui-ci.This control block unlocks the brake 13-14 and triggers a timer T5 at the end of which a third control block

is generated in order to control a counterclockwise rotation of the gate towards the opening position thereof.

qui arrête l'entraînement du moteur en même temps qu'il bloque le frein.The rotation of the gate shaft is, as already described, detected by the means for controlling the rotation and the angular position of the shaft and these control means send signals to the central management system which, after having received the information that the gate is at an angular distance β from its open position issues the fourth control block

which stops the motor drive at the same time as it blocks the brake.

qui comporte une temporisation T1 correspondant à l'intervalle de temps pendant lequel le portillon est maintenu freiné dans cette position ouverte.This control block 4 is immediately followed by another block

which includes a time delay T1 corresponding to the time interval during which the gate is kept braked in this open position.

(voir tracé

à chaque fois qu'un nouvel objet actionne la cellule photo-électrique 29-30, de sorte que le portillon reste ouvert pour laisser passer le second objet, et ainsi de suite.This control block is reset

(see route

each time a new object activates the photocell 29-30, so that the gate remains open to let the second object pass, and so on.

est généré par le système central de gestion. Ce bloc de commande débloque le frein et est après une courte temporisation T5 suivi par un nouveau bloc

Le bloc de commande 51 déclenche la rotation du moteur dans le sens de fermeture du portillon et envoie en même temps une commande C à un compteur qui comptabilise le nombre d'ouvertures.After the end of timer T1 a new control block

is generated by the central management system. This control block unlocks the brake and is after a short delay T5 followed by a new block

The control unit 51 triggers the rotation of the motor in the direction of closing the gate and at the same time sends a command C to a counter which counts the number of openings.

et on revient à l'état initial d'attente du portillon.At the end of this rotation, the contactor c2 of the control means is actuated and this sends a signal to the central management system which then generates a last control block

and we return to the initial state of waiting for the gate.

b) Alarm cycle:

Ce bloc comporte une commande K qui déclenche une alarme acoustique, une commande L qui déclenche une alarme visuelle et une commande LF qui allume une lampe éclair. La durée de ces alarmes est réglée par la temporisation T3.An alarm cycle is initiated if someone pushes the door leaf in the unauthorized direction. This cycle begins in the initial state A of the gate and the first part of its path is designated by broken lines (------------). It is triggered by the actuation of a contactor c3 of the rotation control means which send a signal corresponding to the central management system 40. The central system then produces an alarm block

This block includes a K command that triggers an acoustic alarm, an L command that triggers a visual alarm, and an LF command that turns on a flash lamp. The duration of these alarms is regulated by timer T3.

est généré par le système central de gestion afin de débloquer le frein et, après une nouvelle temporisation T5, une rotation anti-horaire est ensuite commandée par le bloc

At the end of this time delay, a new control block

is generated by the central management system in order to release the brake and, after a new delay T5, an anti-clockwise rotation is then controlled by the block

qui annule les alarmes. La seconde partie de ce tracé d'alarme suit la ligne en pointillés de la figure 8 pour rejoindre le cycle normal juste avant le contacteur c1 qui déclenche la phase 4 de ce dernier cycle. Le portillon reste ainsi ouvert pendant la temporisation T1 et est ensuite refermé selon les phases 5 et 51 du cycle normal. Après un dernier bloc de commande

déclenché par l'actionnement du contacteur c2 des moyens de contrôle de la rotation, le moteur d'entraînement du portillon est arrêté, l'électro-frein est de nouveau bloqué et le portillon est ainsi fermé dans son état initial et le cycle d'alarme et de remise en état initial d'attente est terminé.A contactor C4 of the control means is actuated during the counterclockwise rotation of the shaft and the central management system then produces a control block

which cancels the alarms. The second part of this alarm trace follows the dotted line in Figure 8 to join the normal cycle just before the contactor c1 which triggers phase 4 of this last cycle. The gate remains open during time delay T1 and is then closed according to phases 5 and 51 of the normal cycle. After a final command block

triggered by actuation of the contactor c2 of the rotation control means, the gate drive motor is stopped, the electric brake is again locked and the gate is thus closed in its initial state and the cycle of alarm and initial reset is completed.

It should be noted that the gate remains braked during the entire rotation by pushing in the unauthorized direction.

Furthermore, in this simplified diagram, the contactors c1 to c5 do not correspond to physical contactors c1 to c5, but to different combinations of actuation or non-actuation of the probes 18 and 19 using the cams 23 and 24 as has already been described with reference to FIG. 3. The position of the cams 23, 24 relative to the probes 18, 19 is of course analyzed by the central management system 40 which acts accordingly by generating control blocks comprising controls determining the operation of the electrobrake, the motor and the alarm device at all times.

B. Semi-automatic operating mode by pushing the gate leaf: a) normal opening and closing cycle:

sur la figure 8. Cette partie du trajet du cycle normal selon le mode semi-automatique est relié en parallèle au cycle normal du mode automatique, entre l'inverseur 37 et un point immédiatement en aval des deux points symbolisant le point de départ du cycle A.The path of the commands according to this operating mode is illustrated by a path in dashed lines.

in FIG. 8. This part of the path of the normal cycle according to the semi-automatic mode is connected in parallel to the normal cycle of the automatic mode, between the inverter 37 and a point immediately downstream of the two points symbolizing the starting point of the cycle. AT.

For the rest, this cycle follows exactly the same path, indicated by a solid line, as cycle A.

Ces commandes sont destinées à arrêter le moteur d'entraînement de l'arbre du portillon, de bloquer l'électro-frein et de déclencher une temporisation T2. Lorsque cette temporisation vient à sa fin après une durée de t2, le système central de gestion génère un autre bloc de commande, le

qui comporte une seule commande destinée à débloquer le frein afin qu'il soit possible de déclencher l'ouverture du portillon en semi­automatique par une poussée dirigée vers le battant de celui-ci dans le sens autorisé d'ouverture. Lorsque l'axe du portillon a été décalé angulairement d'un angle β, le contacteur c5 des moyens de contrôle de la rotation est actionné afin d'envoyer un signal au système central de gestion qui ensuite génère les blocs de commande 2, 3, etc. déjà décrits en référence au cycle suivant le mode automatique A.Thus, if we follow the normal path of this semi-automatic cycle B, from the inverter 37, we arrive at the specific path of this cycle and the first block of command generated by the central management system, caused by the actuation of contactor c2, is the block

These commands are intended to stop the drive motor of the gate shaft, to lock the electro-brake and to trigger a time delay T2. When this timer comes to an end after a period of t2, the central management system generates another command block, the

which comprises a single command intended to release the brake so that it is possible to trigger the opening of the semi-automatic gate by a push directed towards the leaf of the latter in the authorized direction of opening. When the gate axis has been angularly offset by an angle β, the contactor c5 of the rotation control means is actuated in order to send a signal to the central management system which then generates the control blocks 2, 3, etc. already described with reference to the cycle following automatic mode A.

b) Alarm cycle:

comporte une seule commande destinée à bloquer le frein de sorte que celui-ci freine la rotation de l'arbre du portillon pendant toute la rotation de celui-ci dans le sens non-autorisé, les alarmes du bloc de commande 01 étant déclenchées simultanément. Ensuite le cycle d'alarme suit exactement le même trajet que celui déjà décrit en référence au mode automatique A.The semi-automatic mode also includes an alarm cycle which is generally identical to the alarm cycle already described with reference to automatic mode A, with the exception that the central management system generates an additional control block after actuation of the contactor c3 of the rotation control means. This control block, the

comprises a single command intended to block the brake so that it brakes the rotation of the gate shaft during the entire rotation of the latter in the unauthorized direction, the alarms of the control block 01 being triggered simultaneously. Then the alarm cycle follows exactly the same path as that already described with reference to automatic mode A.

C - "Panic" mode of operation:

In the event of an incident that takes place behind the gate, it is desirable to be able to open it to evacuate people in it who must then pass the gate in the unauthorized direction. This can be done in two different cycles:

a) push panic cycle:

This cycle is triggered by pushing the gate leaf in the unauthorized direction and thus corresponds exactly to cycle B.b) previously described. Consequently, the alarms are also triggered and the gate then returns to its initial closed position.

b) panic cycle by triggering an additional control loop:

et qui éventuellement aussi comprend des commandes déclenchant des alarmes

It is also possible to open the gate or a whole set of gates simultaneously by acting on a so-called "panic" switch which triggers a control loop comprising a control block.

and which optionally also includes commands triggering alarms

débloque le frein et la commande

fait tourner le portillon dans le sens opposé au sens normal d'ouverture de celui-ci. Un nouveau bloc de commande

est ensuite généré pour maintenir le portillon dans cette position d'ouverture.The command

releases the brake and control

rotates the door in the opposite direction to the normal opening direction of the latter. A new control block

is then generated to maintain the gate in this open position.

The gate remains in this open position until the panic switch is pressed again. A new control block is then generated to cancel the alarms and at the same time rotate the gate to its closed position.

This control loop can advantageously be connected to the normal control loop, just before the control block No. 4 thereof.

D - Operating mode called "storage":

The management system can advantageously include a so-called "storage" operation. This operation is symbolized by the letter r in FIG. 8. This sign r corresponds to a switch which triggers the generation of control blocks 2 to 4 and then 41 of the main cycle. The control unit 41 with the time delay T1 is repeated as long as this switch is actuated in order to maintain the gate in the open position to allow free passage through this gate.

E - Other security provided:

• a) Taking into account that the blocking of the gate shaft is ensured by an electro-brake, an accidental interruption of the supply circuit automatically leads to the release of this shaft.
  Consequently, this avoids having to provide a particular mechanism for the release of the latter in such a case, in order to authorize the exit of the users to avoid any movement of panic.
• b) The two monitoring cells 31 and 32, which are provided at the exit from the controlled passage, make it possible to obtain security in the event of an attempt to cross this passage in the prohibited direction, while the gate 3 is open.
  Indeed in such a case, the warning devices 33 and 34 are put into operation. Furthermore, the circuit can be designed so that it then causes the gate to close very quickly.
• c) The drive of the shaft 5 by a smooth belt (rubber O-ring) avoids destruction linked to possible malfunctions (failure of one of the position sensor elements, electronic card). Slippage is indeed possible between the pulley and the smooth belt. The gear motor can accidentally be put into action, while the electric brake is energized, without any mechanical destruction, the belt 10 sliding in the grooves of the pulleys.
  Moreover, this sliding phenomenon also appears at start-up and under braking.

F - Various variants planned a) Reversal of the opening direction:

The arrangement of the device provided in Figure 3 corresponds to an opening of the gate taking place counterclockwise.

However, it is obvious that the arrangement can be reversed as shown in FIG. 4 so that the gate is adapted to the case of an opening taking place clockwise F2. In such a case, the plate 20 is replaced by a plate 20a on which the arrangement of the cams 23 and 24 of its periphery is reversed.

b) Opening limits: - in the case of a single level of cams:

According to this minimum principle of two diametrically opposite contactors 21 and 22 and cams 23 and 24 on this same plane, it can be seen that the limits of the opening angles are defined by the following rules:
length 26-27 = opening angle
length 25-28 greater than 26-27
length 25-26 cam 23 greater than the panic opening angle
length 27-28 cam 24 equal to the panic opening angle

The assembly of all these lengths leads to the following theoretical equation:

- 2 x the opening length (C) + 2 x the panic length (P) = 360 ° either: the opening length C is = at 180 ° - (P) the panic length.
Example: for a gate with an opening of 90 ° the opening value in the panic direction cannot be greater than 90 °.

It is necessary to point out that these arc lengths are only theoretical values. In practice, the system response times, corresponding to the inertia values, make it necessary to move the values of the edges so as to compensate for the offsets.

- in the case of two cam levels:

It is possible to obtain higher values, provided that two levels of cams are used. In this case, 360 ° are available for each of the contactors 21 and 22. According to this more efficient detection principle, it is possible to reach aperture values greater than 180 °, the only angular condition being, for a stroke d selected opening, the opening value in the panic direction will be obtained by the formula:
- panic angle (P) = 360 ° - opening angle C - delta inertia angle.

Taking as an example an opening value C = 270 °, taking into account an inertia value of 10 °, the opening value in the panic direction will be equal to 360 ° - 270 ° - 10 °, i.e. 80 ° opening in the panic direction.

c) Adjusting the opening and closing positions:

In another variant, the device for controlling the angular position of the shaft 5 can be designed so as to allow a modification of the angular positions of closing and opening of the gate, according to the cases and applications, and in particular according to the configuration. of the controlled passage. This allows for example the installation of the gate in a bent passage or the catching up of the angles in the case of a bad positioning of the gate. As shown in Figure 5, the plate 20 or 20a is then replaced by a plate 20b on which each of the two protruding cams 23 or 24 is itself replaced by two separate parts 23a, 23b and 24a, 24b respectively. Each of these parts is removably attached to the plate 20b which has for this purpose a series of holes 38 distributed over its entire periphery. It is thus possible to arrange the parts 23a, 23b, 24a, 24b in different angular positions. It is also possible to separate the two complementary parts of the same cam more or less from one another in order to produce a cam of greater or lesser length.

To ensure continuity when the two parts constituting the same cam are spaced from each other, these parts carry tabs 39a and 39b which overlap more or less depending on the spacing of the two corresponding parts, which is the case for the two parts 23a and 23b in FIG. 5.

This solution therefore makes it possible to adjust the angular positions of closing and opening the gate at will, in particular as a function of the configuration of the controlled passage.

Figure 6 shows a variant also designed for the same purpose. In this variant, each of the cams, provided on the corresponding plate 20c, also consists of two separate complementary parts 23c, 23d or 24c, 24d. However, the continuity between them, when they are spaced from each other, is ensured by a sliding intermediate tab 39c. It appears between the two parts 23c and 23d shown in Figure 6.

But to obtain the result thus sought, it would be possible to adopt still other solutions, for example a stacking of discs which can occupy different angular positions with respect to each other and each comprising a projecting part capable of forming a fraction of one of the cams to be made.

d) Control of various other functions:

Due to its design, the device associated with the rotary shaft 5 of the door can be arranged to control, in certain determined angular positions of the door, various other useful functions, either for the operation of the latter, or for the desired safeties .

For this purpose, the profile of the control cams provided on the periphery of the plates 20, 20a, 20b or 20c can be modified and opposite these cams a greater number of contactors intended to be actuated in different angular positions can be provided. of the tree 5.

Thus, one could provide, before each limit switch, a contactor or a mark produced by an electronic logic, because it is possible to define exactly the impulses acting on the operation of the electro-brake 13-14 practically, and the times application of these impulses. Before complete blocking, it would be possible to apply progressive braking.

But again many other different functions could be ordered as well as function modifications in progress.

e) Association of two gates:

As shown in Figure 7, it is possible to have a second door 2a opposite the door 2 to ensure the closure of the controlled passage. In the closed position, the leaves 3 and 3a of these two gates are then located in the extension of one another to form a transverse barrier inside the controlled passage. In such a case, the operation of one of the gates is controlled by the other so as to obtain perfect synchronism. Thus in the example illustrated in FIG. 7, the gate 2a is slaved to the gate 2. The electronic card 40 which materializes the control circuit of the gate 2 then constitutes a "master" card, whereas the similar electronic card 40a, controlling the gate 2a, corresponds to a "slave" card, an appropriate link 41 being provided between these two cards.

When used in automatic operating mode, the cell 29, arranged upstream of the assembly then ensures control of the two gates.

f) Variants of the angular position control device:

Instead of providing cams actuating contactors controlling various functions, it would be possible to use more precise detectors. Thus one could provide photocells associated with a bar coding system provided on a turntable. It would also be possible to use position sensors with magnetic operation or with resistive tracks, or any other suitable systems.

G - Application of this gate:

As already indicated, it is intended to be installed in an access or exit passage from a given place, for example a sales store, a public place such as a museum, a boarding area in a airport, etc.

In this regard, it should be noted that the subject of the present invention is not only the present gate, but also the control installations equipped with such a gate and comprising the various devices associated with it: control and command cells. , warning devices, etc.

Claims (10)

1. Passage control installation, intended to be installed in an access or exit passage of a determined place, comprising a gate (2) whose leaf (3) is carried by a vertical shaft (5) driven in rotation by a motor (9) controlled by a control system comprising a member (29-30) capable of detecting the penetration of a person into the corresponding passage, in the authorized direction, to then rotate the shaft (5) of the gate in the direction of opening of the leaf thereof, this installation also comprising means capable of stopping this leaf (3) in this position for the desired time, then of controlling the return of the latter to its position closed waiting, characterized in that there is provided a central management system (40) for the operation of the gate and the actuation of the motor (9) in one direction and the other, and this management system is subject to means of controlling both directions of r otation of the shaft (5) of the gate (2), as well as of the angular position of this shaft, and, in the event of rotation of this gate in the unauthorized direction when it was previously closed or being opening, this management system is able to then command on the one hand the activation of an alarm device (33-34) and on the other hand the maintenance or the operation of a device (13-14) braking the rotary shaft (5) of the gate which is capable of braking it during its entire rotation in the unauthorized direction while allowing this rotation under the effect of a thrust exceeding a determined value. 2. Installation according to claim 1, characterized in that the central management system (40) comprises a second control circuit, connected in parallel to that controlling the rotation of the motor (9) in the direction of opening of the gate under the action of the passage detector (29-30), and this second control circuit, which is controlled by the means for controlling the angular position of the shaft (5) of the gate, is capable of controlling the setting in operation of the motor in the direction of opening of the gate, when these control means detect a rotation of a determined angle of the shaft (5) in the authorized direction, under the effect of a thrust exerted in this direction on its leaf (3), while it was closed. 3. Installation according to claim 1 or 2, characterized in that the central management system (40), which is controlled by the means for controlling the rotation of the shaft (5) of the gate (2), is capable of triggering the activation of a warning device (33-34) if there is a rotation of the shaft (5) of the gate in one or the other direction, without the passage detecting member (29 - 30), has detected the passage of a person in the authorized direction. 4. Installation according to one of the preceding claims, characterized in that the central management system (40) is capable of triggering a complete cycle of opening and closing of the gate (2) to correctly reposition the leaf (3) of this, after there has been detection of an abnormal angular displacement of this leaf. 5. Installation according to one of the preceding claims, characterized in that the central management system comprises a contactor for controlling the opening of the gate (2) in the event of an event which can trigger a panic, this contactor being connected in the circuit. of the control system so as to cause, when it is actuated, the engine (9) to operate in the direction of opening of the leaf (3) of the door in the opposite direction to the normal direction of opening, and this whatever the cycle possibly in progress on the gate. 6. Installation according to claim 5, characterized in that the control system comprises a contactor (r) said storage, which is connected in the circuit of the control system so as to cause, when actuated, the normal opening of the gate (2), whatever the cycle possibly in progress on the gate, and keeping the gate in the open position while this contactor remains actuated. 7. Installation according to claims 1 to 3, characterized in that the means for controlling the rotation and the angular position of the shaft (5) of the door (2) consist of several contactors (21-22) distributed around the periphery of said shaft, the latter carrying several cams capable of acting on one or the other of these contactors (21-22), depending on the direction of rotation of said shaft (5) and the resulting modification of its position angular, however that the various contactors (21-22) are connected in the circuit of the central control system to trigger the planned operation or operations depending on the case. 8. Installation according to claim 7, characterized in that the cams carried by the shaft (5) of the gate (2) are constituted by separate parts (23a, 23b, 24a, 24b) fixed in an adjustable manner on a plate ( 20) serving as their support, and which can thus be immobilized in different angular positions to allow adjustment of the angular positions for which the contactors are actuated by cooperating with the cams. 9. Installation according to one of the preceding claims, characterized in that two identical gates (2a, 2b) are arranged opposite one another, the control circuit of one of these gates being slaved to the circuit each other's command. 10. Installation according to one of the preceding claims, characterized in that at the outlet of the controlled passage, there are provided two photoelectric cells (31- 32) for passage control, which are connected to the general control circuit. so that :
- in the case of a passage in the authorized direction, within a normal period after crossing the gate (2), nothing special occurs,
- in the case of a passage in the prohibited direction, or a late passage after crossing the gate, these cells (31-32) trigger the operation of one or more warning devices (33-34), and possibly a quick closing of the gate.

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