DE69002299T2 - CONTROL METHOD AND SYSTEM FOR INPUT OR OUTPUT. - Google Patents

Description

The present invention relates to devices for controlling a passage at an entrance or an exit of a specific location. Such devices or systems are used in particular to control the entrance to a retail outlet, to a check-in area at an airport or the like by only allowing passage in the one intended direction.

More specifically, the present invention is directed to systems that have a swing door for control purposes, the door leaf of which, forming a barrier, is supported by a vertical shaft that can be pivoted by an electric motor that is connected to a control contact. The motor is usually connected to a photocell that is arranged in the passage to be controlled. The arrangement is such that the entry of a person in the permitted direction for the passage causes the contact to close automatically. In this case, the opening of such a swing door then takes place automatically. The swing door then returns to its initial closed position after a certain period of time has elapsed.

The known swing doors of this type have a number of disadvantages. One of them is that the swing door is secured in the closed position by means of a blocking mechanism, the design of which is relatively complex. Furthermore, it is necessary to provide mechanical means, which are also relatively complex, in order to create an opening option, which is referred to as "anti-panic opening". and in the opposite direction to the permitted direction in the event of an incident or event likely to cause panic. Document WO-A-8 600 953 describes a swing door provided with such a safety device integrated in the drive shaft of the swing door. This device comprises two flanges held in contact with one another by means of a spring and connected in rotation by a cylindrical bolt arranged in a space formed by two radially extending semi-cylindrical recesses provided in the surfaces of the two flanges. If a pressure exceeding a certain value is exerted on the leaf of the swing door and therefore on its drive shaft, the two flanges can rotate against one another and drive the bolt out of one of the recesses against the force of the spring. The two flanges must then be returned to their original position manually.

Document EP 75 806 describes yet another such swing door. Its leaves are operated by motors which are activated by photocells which monitor the entry of a person in the permitted direction into the passage to be controlled. However, the control system is designed only to open the swing door and return it to the closed position after a certain time. This system is not designed to offer other control options or to prohibit passage. The possibility of opening in the opposite direction in the event of panic is made possible by a simple coupling mechanism which gives way to pressure as soon as this pressure exceeds a certain value. Such a mechanism has the disadvantage that a person who wishes to fraudulently exit through a passage forming an entrance cannot do so. can do so comfortably without being hindered in the least, because it is enough to exert a sufficiently strong pressure on the leaves of the swing door. This represents a serious disadvantage for a swing door, the purpose of which is to allow passage in only one direction.

In another field, for example turnstiles which restrict the passage of persons one by one, document EP 331 770 describes a turnstile with a drive motor which is automatically activated when one of the turnstile rods is rotated in the permitted direction over a certain angular range by an intruder. However, such a turnstile does not constitute a system which allows passage in the opposite direction in the event of an imminent panic without the intervention of personnel who are usually required to deactivate an electric brake. Another important reason is that the device does not have a system which enables the various functional controls and safety functions to be implemented in a simple manner without having to rely on electromagnetic cards or the like.

Another turnstile of this type is described in DE-C-3 831 056. This turnstile is also equipped with an electric brake and an additional loop wall brake. In the event of a power failure, the electric brake opens, while the other brake remains in operation, in such a way that exit is possible but access is prevented.

It is the object of the invention to eliminate these disadvantages of the known devices and to show a method for controlling a passage and a device for carrying out the method. The device is of the type described above and allows various control and security functions. It must be suitable for meeting the conflicting requirements already described, namely: on the one hand, passage in an unauthorized direction must be possible in exceptional cases in the event of an impending panic. On the other hand, there is an obligation to prevent passage in an unauthorized direction that is carried out with fraudulent intent.

The invention relates to a method for controlling a passage used at an entrance or exit to a specific location and using at least one swing door, the door leaf of which is supported by a vertical shaft that can be pivoted by a motor connected to a sequential control for the swing door and for starting the motor in one or the other direction of rotation. The sequential control has control means for the two pivoting directions of the shaft of the swing door and a brake for pivoting the shaft of the door leaf. The following method steps take place:

- Determine the direction of passage of a person in the passage and, if the person walks in the permitted direction of passage:

- triggering an opening and closing cycle of the swing door to let the person through, and

if the person walks in the prohibited direction and exerts pressure on the swing door leaf to swing the swing door shaft in the opposite direction to the normal opening direction:

- give in to the pressure if it exceeds a set value; and possibly trigger one or more alarms.

The process is characterized by the following process step:

- Activation of the brake on the swing door shaft regardless of its open or closed position, in order to actively brake the unauthorized pivoting movement for its entire duration.

The method according to the invention is further characterized by subclaims 2 to 8.

The invention also relates to a device for carrying out the method, which is intended for installation in a passage to be controlled and has at least one swing door, the door leaf of which is supported by a vertical shaft that can be pivoted by a motor that is connected to a sequential control for the swing door and for starting the motor in one or the other direction of rotation. The device has a brake for the end of the course of pivoting of the door leaf of the swing door in its permissible opening direction, the sequential control having control means for the two pivoting directions. The device is characterized according to the invention in that the sequential control has a control circuit that activates the brake on the shaft of the swing door regardless of its opening or closing position in order to actively brake the impermissible pivoting for its entire duration.

Nevertheless, the present device is effectively designed so that, exceptionally, a passage in in an impermissible direction in the event of an impending panic, without a person being able to benefit from this possibility by fraudulently passing through the passage in an impermissible direction. In such a case, their passage is slowed down and indicated by warning devices, so that the possibility is created to intervene in the desired manner in the event of such an attempted passage.

The present invention also aims to create such a device that functions not only under the influence of a passage sensor for passage, but also when a person exerts pressure in the correct direction against the door leaf of the swing door. According to a further feature of the invention, the central sequential control has a second control circuit in parallel arrangement that controls the motorized pivoting of the swing door in the opening direction under the influence of a passage sensor for passage. This second control circuit is provided with control means for the pivoting of the shaft of the swing door and switches the motor on to open the swing door when the control means detect pivoting of the shaft in the permissible direction by a predetermined angle as a result of pressure exerted on the door leaf in the closed position while it was closed.

According to another feature of the invention, the sequential control has control means for pivoting the shaft of the swing door and is designed to switch on a warning device when the shaft of the swing door pivots in one direction or the other without the passage sensor having detected the passage of a person in the permissible direction.

Further details and advantages of the invention will become apparent from the following description, which refers to the accompanying drawings using the reference numerals.

Show it:

Figure 1 is a perspective view of the device for controlling a passage with a swing door,

Figure 2 is a partially sectioned view of such a swing door,

Figure 3 shows a detailed view along line III-III in Figure 2,

Figure 4 is a similar representation to Figure 3 of a modified embodiment,

Figures 5 and 6 show further similar representations to Figure 3 with the reproduction of two embodiments,

Figure 7 is a schematic representation showing the lines between the individual parts and

Figure 8 shows a schematic circuit diagram of the sequential control of the device.

The device shown in Figure 1 is intended to control the passage of visitors along a passage to a specific location. The passage is formed by two parallel barriers 1. The device is designed to allow passage only in the permitted direction, as indicated by the arrow F. In the central area of the passage, a swing door 2 according to the invention is provided. Its door leaf 3 is supported by a vertical rotating shaft 4. The door leaf may consist of a metal tube bent into a U-shape and mounted horizontally in such a way that, in the closed position, it forms a transversely extending barrier to the interior space belonging to the controlled passage.

The door leaf can be pivoted between two end positions AB and AC, which represent the closed position on the one hand and the open position on the other. The normal pivoting direction of the shaft 4 for opening the swing door is that indicated by the arrow F1 in Figures 1 and 3. However, with certain exceptions, as will be described later, the door leaf can also be pivoted in an opposite direction, as indicated by the open position AD in Figure 3.

The vertical shaft 4 is provided in the foot area at the upper end of a pivotable shaft 5, which is arranged inside a base forming a housing 6. The lower end of the shaft rests in a bearing 7, and its upper end is guided in another bearing 8. The drive for the shaft 5 is provided by an electric motor 9 with the interposition of a belt 10 with pulleys 11 and 12, which are connected on the one hand to the shaft stub of the motor 9 and on the other hand to the shaft 5 to be driven.

An electric brake is also connected to the shaft 5. This electric brake has a ring 13 which is screwed against the upper wall of the housing 6. It also has a ring 14 which is connected to the shaft 5 in a rotationally fixed manner. The ring 14 is connected to the shaft 5 and its drive pulley 12 via a membrane 15 and a slide 15a. The entire unit is axially movable. The fixed ring 13 forms an electromagnet with a winding 16. The ring 14 forms a corresponding movable counterpart, with a gap between the two parts. The supply of the winding 13 causes a magnetic field which attracts the movable ring 14. The rubbing surfaces of the two parts 13 and 14 are pressed against each other so that a braking effect is created for the shaft 5. To release the brake, it is sufficient to interrupt the electrical supply so that the movable ring 14 is no longer pressed against the fixed ring 13 of the electric brake.

As already stated, the device according to the invention has a central sequential control capable of performing various control and safety functions. The sequential control is incorporated in an electronic card, the functional diagram of which is shown in simplified form in Figure 8. The sequential control is also provided with a device 17 for controlling the angular position of the shaft 5. As can be seen from Figure 3, this device comprises two resilient sensors 18 and 19 arranged to come into contact with control cams arranged on the periphery of a horizontal plate 20 connected to the shaft 5. Each of the sensors 18 and 19 is part of a contact 21 or 22 which is integrated in the circuit of the electronic control card 40 of the unit (see Figure 7).

In the embodiment shown in Figure 3, the control cams, which are arranged on the circumference of the plate 20, consist of two projections 23 and 24 with a circular arc shape, which are separated from each other on both sides by circular arc-shaped areas of smaller diameter. The end faces 25, 26, 27, 28 of the two projecting cams 23 and 24 are so designed to set the sensors 18 and 19 in operation in one direction or the other, depending on the angular position of the shaft 5. In this way, the sensors form detector elements for the angular position of the shaft. They actuate the corresponding contacts 21 and 22 in different angular positions of the shaft 5.

After passing through a certain pivot angle α in the direction of arrow F1, the sensor 18 is completely free from the projecting cam 23 and consequently acts on the contact 21. This is connected to the control circuit in such a way that it starts the drive motor 9 in the opening direction of the swing door if the control circuit is initially in such a functional sequence.

Before the swing door reaches its open position AC, the front face 26 of the projecting cam 23 hits the sensor 19, which in turn acts on the contact 22. This is connected in the sequence control circuit in such a way that it activates the electric brake 13-14. This activation takes place at a certain angular distance β from the stop position AC. The electric brake 13-14 therefore first brakes the shaft before it is completely braked in the stop position.

The control circuit has an electronic logic 40, the function of which will be described later. This ensures for a certain period of time that the open position of the swing door is maintained for a sufficient period, after which the control circuit automatically starts the motor 9 in the opposite direction to return the swing door to the closed position AB. In this case, the electric brake 13-14 is also activated, at a certain distance from the closed position according to the control of the angular position associated with the shaft 5. This allows the movement to be dampened before the swing door is completely blocked again in its closed position.

The control device in Figure 1 also comprises a photocell 29 arranged relative to a light beam 30 or a reflector at the entrance to the passage to be controlled. This photocell is connected to the sequential control circuit in such a way that it starts the motor 9 in the opening direction as soon as a person moves in the permitted direction at the entrance to the passage, if the circuit is controlled according to this mode of operation.

The concept of the sequence control is such that a choice can be made between two different operating modes, as described in detail below, namely:

- in an automatic mode, triggered by the photocell 29 at the entrance,

- or in a semi-automatic mode by pressing the door leaf 3 of the swing door.

In the area of the exit of the controlled passage, there are two photocells 31 and 32, to which two corresponding light beams are assigned. The two photocells are connected to the sequence control circuit in such a way that each user of the exit of the passage in the permitted direction after passing through the swing gate covers the photocells with a time delay. The two photocells are connected to the sequence control circuit in such a way that their covering one after the other in the prescribed order and after a certain period of time nothing If, on the other hand, the photocells are covered in the reverse order, by first covering the photocell 32, the control circuit is designed in such a way that one or more alarm devices and possibly the immediate swinging back of the swing door 3 into the closed position are triggered.

The alarm devices activated by the photocells 31 and 32 may consist of a sound emitting device 30 and a light emitting alarm device 34. Both devices may be housed in a single housing 35 mounted near the base 6 of the swing door. This housing may also include a counter recording the total number of openings of the swing door and having a display 36 provided in the area of one of the surfaces of the housing.

In addition, a number of other safety systems are provided, which are mentioned below. The control circuit has a switch 37 which allows the unit to be switched to one or the other operating mode. This switch is connected to the electronic card 40 of the control unit (Figure 7).

Figure 8 shows a simplified diagram of the sequence control 40. This diagram is described with reference to the swing door according to Figure 3.

The different line connections in Figure 8 have the following meaning: common line connection of the basic cycles automatic cycle controlled by the photocell semi-automatic cycle with actuation by pressure in permissible direction Return of the maintenance of the open position of the swing door alarm Returning the position of the swing door after an alarm

The first numbers of the control blocks indicate the sequence of the relevant control steps.

R = 0 : The shaft of the swing door 3 is not pivoted.

RG = 1 : the pivoting of the swing door shaft in counterclockwise direction

RD = 1 : the pivoting of the swing door shaft in clockwise direction

EF = 0 : The electric brake is released.

EF = 1 : The electric brake is switched on.

T : Delay

t : duration of the delay

K = 0 : acoustic alarm not triggered

K = 1 : acoustic alarm triggered

L = 0 : visible alarm not triggered

L = 1 : visible alarm triggered

LF = 0 : bright lamp not activated

LF = 1 : bright lamp activated

C : Counter

cp : contact activated via the photocell

r : contact of a breaker

c1 : Sensor that allows a permissible deflection in the Counterclockwise (open) indicates

c2 : Sensor indicating permissible clockwise rotation (closing)

c3 : Sensor indicating an impermissible clockwise rotation (pressure to go back out)

c4 : Sensor that indicates a permissible swivel in counterclockwise direction (in the direction of opening after pressure in an impermissible direction => then close again)

c5 : Sensor indicating permissible anti-clockwise deflection (pressure to enter)

In the embodiment shown in Figure 8, the central sequencer allows an automatic mode of operation (A) via a photocell as well as a semi-automatic mode of operation (B) by applying pressure. The circuit in question for the second mode of operation is provided in parallel with the basic circuit corresponding to the first mode of operation. It is possible to select one or the other mode of operation by means of a switch 37 for the individual line connections of the two modes of operation.

A - Automatic operation via photocell: a) Normal opening and closing cycle

When selecting the automatic mode, the switch 37 is placed in position A and the sequence control selects the control block

This control block controls the swing door into a ready position in which the swing door is closed and braked via the electric brake 13-14. This is the starting position and is designated with A.

When the passage of an object is detected by the photocell 29-30 (see Figure 7), this causes a signal to be sent to a contact cp of the sequence control, which controls a second control block

calls.

This control block releases the brake 13-14 and triggers a deceleration T5, at the end of which a third control block

is called, which controls the pivoting of the swing door in an anti-clockwise direction towards the open position.

The pivoting of the shaft of the swing door is, as already described, monitored by control means relating to the pivoting and the angular position of the shaft. These control means send signals to the central sequence control after they have received information that the swing door is at an angular distance β from the open position. This creates a fourth control block

called, which stops the drive of the motor and simultaneously switches on the brake.

This fourth control block is immediately followed by another control block

which has a delay T1 that corresponds to the period of time during which the swing door is held in the open position with the brakes.

This control block

is called again every time see line connection

when another object covers the photocell 29-30, so that the swing door remains open to let the second object through, etc.

After the end of the delay T1, another control block

through sequence control This control block releases the brake and is activated by a new control block after a short delay T5.

replaced. The control block 51 triggers the pivoting of the motor in the closing direction of the swing door and at the same time sends a command C to a counter that registers the number of openings.

At the end of the swivel movement, the sensor c2 of the control means is activated and sends a signal to the sequential control so that a final control block

is called so that one returns to the beginning of the cycle in the ready position.

b) Alarm cycle:

An alarm cycle is initiated when someone pushes the swing door in an inadmissible direction. This cycle begins with the swing door in position A and its first wire connection is indicated by a dashed line

It is triggered by a sensor c3 of the control means for the swivelling, which sends a corresponding signal to the sequence control 40. The central system produces an alarm block

This block has a command K that triggers an acoustic alarm signal, a command L that triggers a visual alarm, and a command LF that switches on a bright lamp. The duration of these alarms can be controlled by the delay T3.

At the end of this delay, a new control block

by the sequence control. The brake is released and after a further deceleration T5 a counterclockwise swivel is made over the block

triggered.

A Sensor c4 of the control means is activated during the rotation of the shaft in the counterclockwise direction and the central sequence control calls a control block

which switches off the alarms. The second part of this connection follows the dotted line in Figure 8 to return to the normal cycle immediately before the sensor c1, which calls up phase 4 of this cycle. The swing gate thus remains open during a delay T1 and is finally closed according to phases 5 and 51 of the normal cycle. After a final control block

triggered by sensor c2 of the swing control means, the motor drive is stopped and the electric brake is engaged. The swing door is closed again in its initial position and the alarm cycle and its reset to the initial standby position is completed.

The swing door remains braked during a swing due to pressure application in an impermissible direction.

In the simplified diagram, the sensors c1 to c5 do not correspond to the physical contacts c1 to c5, but to the various combinations of activation or non-activation of the sensors 18 and 19 and of the cams 23 and 24, as already described in connection with Figure 3. The position of the cams 23, 24 relative to the sensors 18 and 19 is analyzed by the central sequencer 40, so that the control blocks are subsequently created which determine the signals which determine the functioning at any moment for the electric brake, the motor and the alarm devices.

B - Semi-automatic operation by applying pressure to the door leaf of the swing door: a) Normal cycle of opening and closing:

The line connection according to this mode of operation is made by the line

shown in Figure 8.

This normal cycle to semi-automatic mode line connection is arranged in parallel with the normal cycle to automatic mode. It is located between the change-over switch 37 and a point immediately downstream of two points which represent the branch point from cycle A.

Otherwise, this cycle follows exactly the same line connection as shown by the solid lines for cycle A.

Following the normal wiring of the semi-automatic cycle B, starting from the switch 37, one reaches the control block via the special wiring of this cycle and the first control block called by the central control and triggered by the sensor c2.

These commands are intended to stop the drive motor for the swing door shaft, apply the electric brake and trigger a deceleration T2. While this deceleration reaches its end point during a deceleration period t2, the central sequence control generates another control block

which has a single control signal for releasing the brake, so that it is possible to open the swing door in a semi-automatic way by applying pressure to the swing door leaf in the permitted opening direction. When the swing door shaft has exceeded the angular range of the angle β, the sensor c5 of the The swivel control means are activated to send a signal to the central sequential control which calls up the control blocks 2, 3, etc., as already described in connection with the cycle of automatic operation A.

b) Alarm cycle:

The semi-automatic mode of operation also has an alarm cycle which is essentially identical to the alarm cycle already described in connection with the automatic mode of operation A, with the exception that the central sequence control generates an auxiliary control block after the sensor c3 of the control means for the swivel has responded. The control block

has a single signal, which serves to brake the rotation of the swing door shaft during its entire swing in an impermissible direction. At the same time, the control block 01 for the alarm devices is triggered. The alarm cycle then follows via exactly the same cable connection as was already described for operating mode A.

C - Operating mode in case of "panic":

In the event of an incident occurring in a location behind the swing door, it is desirable to be able to open it in order to evacuate the people who are there and who have to pass through the swing door in an unauthorised direction. This can happen according to two different cycles:

a) Panic cycle through pressure application:

This cycle is triggered by a pressure against the door leaf of the swing door in an impermissible direction and corresponds exactly to cycle B.b) as described above. Consequently, the alarm devices are also triggered here and the swing door finally returns to its initial closed position.

b) Panic cycle by triggering a corresponding control command:

It is nevertheless possible to open the swing gate or all the swing gates at the same time by activating a switch called "panic" which triggers a control command that activates a control block

and which may also simultaneously cause a control block

for the alarm devices.

The command

releases the brake and the command

causes the swing door to swing in the opposite direction to its normal opening direction. A new control block

is then created to hold the swing door in this open position.

The swing door remains in this open position until the "panic" breaker is activated again. A new control block is then created, which switches off the alarm and at the same time causes the swing door to swing into its closed position.

This control command can advantageously be combined with the normal control command, precisely before control block no. 4.

D - Operating mode "Open":

The sequence control can advantageously have an "open" operating mode. This mode of operation is symbolized by the letter r in Figure 8. The character r belongs to a breaker that triggers the creation of control blocks 2 to 4 and finally 41 of the main cycle. The control block 41 with the delay T1 is repeated as long as the breaker remains activated, so that the swing door remains in the open position and allows free passage through the swing door.

E - Other implemented safeguards:

a) Because the blockage of the swing door shaft is caused by an electric brake, a power failure automatically releases the shaft.

This avoids having to create a special mechanism for the release in such a case, so that the exit is then cleared for the visitors and any panic movement is avoided.

b) The two photocells 31 and 32 provided at the exit of the controlled passage provide a safety device in the event of an attempt to pass through the passage in an unauthorised direction, even if the swing gate 3 is open.

In such a case, the warning devices 33 and 34 respond. In addition, the circuit can be designed so that the swing door closes quickly.

c) The drive of shaft 5 by means of a smooth belt (rubber toric ring) avoids damages associated with faulty operation (failure of one of the Position catches, electronic card). A sliding movement between the pulley and the smooth belt is possible. Even if the motor is accidentally started while the electric brake is still under tension, no mechanical damage occurs because the belt 10 can slide in the recesses of the pulley.

Furthermore, the phenomenon of sliding also occurs during start and braking.

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

The arrangement of the device provided in Figure 3 corresponds to an opening of the swing door in an anticlockwise direction.

It can be seen that the arrangement can also be reversed, as shown in Figure 4, so that the swing door can then be opened clockwise according to arrow F2. In this case, the plate 20 is replaced by a plate 20a, on the circumference of which the cams 23 and 24 are arranged in a reversed relative position.

b) Limitation of opening movements: - In case of cams at the same level:

According to the minimal arrangement of two contacts 21 and 22 diametrically opposite and the arrangement of cams 23 and 24 in the same plane, one can see the limitation of the opening angles, which are defined according to the following rules:

Length 26-27 = opening angle

Length 25-28 larger than 26-27

Length 25-26 cam 23 larger than the opening angle in case of panic

Length 27-28 Cam 24 equal to the opening angle in case of panic

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

- 2 x the opening length (C) + 2 x the length of the panic (P) = 360º. The length of the opening (C) is equal to 180º - (P) the length of the panic.

Example:

For a swing door with an opening of 90º the opening in the panic sense cannot be larger than 90º.

However, the arc lengths are theoretical values. In practice, the response times of the system depend on inertia values, which force the input values to be adjusted in such a way that adjustments are compensated.

- In case of arrangement of the cams at two different heights:

It is possible to obtain more values if the cams are provided at two heights. In this case, the 360º can be divided between each of the contacts 21 and 22. With this more efficient principle, it is possible to obtain opening values greater than 180º. The only angular condition for a chosen opening path is that the closing value in the panic direction is obtained according to the following formula:

- Panic angle (P) = 360º - Opening angle C - Angle of inertia difference.

For example, if you take an opening value C = 270º and take into account that the inertia value can be 10º, then the opening angle in the panic sense is 360º - 270 - 10º, i.e. 80º opening angle in the panic sense.

c) Adjustment of the opening and closing positions:

According to another embodiment, the device for controlling the angular position of the shaft 5 can be designed in such a way that it allows the angular positions for the closed position and for the open position of the swing door to be varied, depending on the individual cases and applications and in particular on the configuration of the controlled passage. This makes it possible, for example, to use a device comprising the swing door in a curved passage or to adjust the angles in the event of an incorrect position of the swing door. As can be seen from Figure 5, the plate 20 or 20a is replaced by a plate 20b on which each of the two projecting cams 23 or 24 is replaced by two specific pieces 23a, 23b and 24a, 24b. Each of these pieces is arranged displaceably on the plate 20b, which has a row of holes 38 distributed around its circumference. It is thus possible to arrange the pieces 23a, 23b, 24a, 24b at different angular positions relative to one another. It is also possible to arrange one or the other of the pieces at a greater or lesser distance in order to produce a longer or shorter cam.

In order for the two pieces to form a continuous cam despite their spaced-apart arrangement, these pieces can have extensions 39a and 39b which overlap more or less according to the selected distance, as is shown for the two pieces 23a and 23b in Figure 5.

This solution makes it possible to adjust the angular positions for opening and closing the swing door, in particular according to the shape of the controlled passage.

Figure 6 shows a variant that serves the same purpose. In this embodiment, each cam that is arranged on the plate 20c is formed by two specific, parts 23c, 23d or 24c, 24d that belong together. Even if these cams are arranged at a distance, a continuous course is achieved by a sliding extension 39c. This can be seen in the example of the two parts 23c and 23d in Figure 6.

To achieve the desired result, it is possible to use other solutions, such as a stack of discs whose discs cover the various angular positions relative to each other, each disc having a projecting part to form the relevant cam.

d) Control according to various other operating modes:

According to its design, the device connected to the shaft 5 of the swing door can be arranged in such a way that various specific angular positions of the swing door and other useful functions, either for operating reasons or for desired safety reasons, can be achieved.

For this purpose, the profile of the control cams arranged on the periphery of the plates 20, 20a, 20b or 20c can be changed and, depending on the cams, a larger number of contacts can be provided which are actuated in the various angular positions of the shaft 5.

It is also possible to place a contact or a mark formed by an electronic logic before the end of each movement section, because it is possible to define precisely the impulses that act on the operation of the electric brake 13-14, as well as the duration of these impulses. Before a complete stop is made, it is possible to bring about progressive braking.

It is pointed out again that numerous other different functions as well as changes to the functions can be implemented.

e) Equipped with two swing doors:

As can be seen from Figure 7, it is also possible to arrange a second swing door 2a relative to the swing door 2, so as to form a closed controlled passage. In the closed position, the leaves 3 and 3a of the two swing doors are aligned with each other and form a transverse barrier for the interior of the controlled passage. In such a case, the operation of one swing door is linked to the other so as to create a perfect synchronism. In the example shown in Figure 7, the swing door 2a is coordinated with the swing door 2. The electronic card 40 which forms the control circuit for the swing door 2 represents a "master" card, while the similar electronic card 40a which controls the swing door 2a is to be considered a "slave" card. Of course, a connection 41 is provided between the two cards.

When using the automatic mode, the photocell 29, provided at the entrance of the entire unit, controls both swing doors.

f) Variants of the device for controlling the angular positions:

Instead of the cams that actuate the contacts controlling different functions, it is possible to use more precise detectors. It is also possible to use photocells connected to a bar code system provided on the rotating plate. It is also possible to use magnetic-based position detectors or resistive tracks or any other suitable system.

G - Application of the swing door shown:

As already explained, the swing door is intended to be used in a passageway at an entrance or an exit to a specific location, for example a shop, a public building such as a museum, a departure area at an airport or the like.

The present invention is obviously not only concerned with the swing door shown, but also with the control devices on such a swing door as well as other devices connected thereto: control cells, warning devices, etc.

Claims (18)

1. Method for controlling a passage at an entrance or an exit of a specific location, with at least one swing door (2), the door leaf (3) of which is supported by a vertical shaft (5) which can be pivoted via a motor (9) which is connected to a sequential control (40) for the swing door and the motor (9) in one and the other direction of rotation, the sequential control having control means (21, 22, 23a, 23b, 24a, 24b) for the two pivoting directions of the shaft (5) of the swing door (2) and a brake (13, 14) for pivoting the shaft (5) of the door leaf (3), with the following method steps: - Determine the direction of passage of a person in the passage and, if the person walks in the permitted direction of passage: - triggering an opening and closing cycle of the swing door to let the person through, and if the person walks in the impermissible direction and exerts pressure on the door leaf of the swing door to swing the shaft (5) of the swing door in the opposite direction to the normal opening direction: - give in to the pressure when it exceeds a set value and possibly trigger one or more alarms characterised by the following procedural steps: - Activation of the brake (13, 14) of the shaft (5) of the swing door regardless of its opening or Closed position to actively brake the impermissible swiveling for its entire duration. 2. Method according to claim 1, characterized in that - after the swing door has been opened by pressure in the impermissible direction - an automatic switching cycle is triggered to transfer to the standby position, which consists of the following steps: - Release the brake; - Switching on the motor to swing the swing door into the normal opening position; and - Reverse the direction of rotation of the motor to bring the swing door into its normal closing direction. 3. Method according to claim 1 or 2, characterized in that the shaft (5) of the door leaf (3) is released for pivoting and for triggering an opening movement of the swing door via the motor when the door leaf is in the closed position and pivoting of the shaft (5) in the permissible direction by a certain angle is detected as a result of pressure exerted on the released door leaf (3). 4. Method according to one of claims 1 to 3, characterized by the following method step: - Switching off a warning device (33-34) if the shaft (5) of the swing door pivots in one or the other direction without detecting the passage of a person in the permitted direction. 5. Method according to one of claims 1 to 4, characterized by the following method steps: - Detecting an obstacle that prevents the pivoting of the door leaf or a counterforce exerted on the door leaf, and - Initiating a switching cycle to return the door leaf (3) to its initial position during the interrupted cycle. 6. Method according to one of claims 1 to 5, characterized in that two successive monitorings (31, 32) are carried out to determine the direction of passage, so that - in the case of passage in the permitted direction, nothing special happens during a normal period of time after passing through the swing gate, - in the event of passage in the wrong direction or delayed passage after passing through the swing door, one or more warning devices (33-34) are activated and, if necessary, the swing door is closed quickly. 7. Method according to one of claims 1 to 6, characterized by the following method step: - Switching on a switch (r) for an "open" position which, on the one hand, causes a normal opening of the swing door, however straight the cycle may be, and, on the other hand, keeps the swing door in the open position for the time the contact remains activated. 8. Method according to one of claims 1 to 7, characterized in that the sequence control (40) for each swing door serves as a sequence control (40) for one or more other swing doors, so that each movement brought about by a sequence control is reproduced identically by the other swing door or doors. 9. Device for controlling a passage for carrying out the method according to one of the preceding claims, intended for installation in a passage to be controlled and comprising at least one pivoting door (2), the door leaf (3) of which is supported by a vertical shaft (5) which can be pivoted by a motor (9) connected to a sequential control (40) for the pivoting door and the motor (9) in one and the other direction of rotation, and with a brake (13, 14) for the end of the course of pivoting of the door leaf of the pivoting door in its permissible opening direction, the sequential control comprising control means (21, 22, 23a, 23b, 24a, 24b) for the two pivoting directions, characterized in that the sequential control (40) comprises a control circuit which activates the brake (13, 14) for the shaft (5) of the pivoting door independently of its Open or closed position is activated in order to actively brake the impermissible swiveling movement for its entire duration. 10. Device according to claim 9, characterized in that the sequence control (40) enables the pivoting of the shaft (5) and thus of the door leaf (3) when the pivoting door is in the closed position. 11. Device according to claim 9 or 10, characterized in that the control circuit has control means (21, 22, 23a, 23b, 24a, 24b) for pivoting the shaft (5) of the swing door and switches on the motor in the direction of opening the swing door when the control means Detect pivoting of the shaft (5) in the permissible direction by a specified angle as a result of pressure exerted on the released door leaf (3) in the closing position while it was closed. 12. Device according to one of claims 9 to 11, characterized in that the sequence control (40), which has control means for pivoting the shaft (5) of the swing door (2), is designed to switch on a warning device (33-34) when pivoting of the shaft (5) of the swing door takes place in one direction or the other without the passage sensor (29-30) having detected the passage of a person in the permissible direction. 13. Device according to one of claims 9 to 12, characterized in that the sequence control (40) is designed to detect an obstacle which hinders the pivoting of the door leaf or a counterforce exerted on the door leaf and to trigger a switching cycle for returning the door leaf (3) to its starting position during the interrupted cycle. 14. Device according to one of claims 9 to 13, characterized in that at the exit of the controlled passage two control detectors (31-32) are provided in succession for determining the direction of passage, which are connected to the sequence control (40) in such a way that - in the case of passage in the permitted direction, nothing special happens during a normal period of time after passing through the swing gate (2), - in case of passage in the prohibited In the event of a sudden change in direction or a delayed passage after passing through the swing door, the control detectors (31-32) activate one or more warning devices (33-34) and possibly also trigger a rapid closing of the swing door. 15. Device according to one of claims 9 to 14 with a switch marked "panic" which is connected to the sequence control, characterized in that when the switch is actuated, the sequence control switches on the motor (9) in the opening direction for the door leaf (3) of the swing door opposite to the normal opening direction, however straight the cycle may be over its course, and holds the swing door in the open position for the time in which the switch remains switched on. 16. Device according to one of claims 9 to 15, characterized in that the sequential control has a switch (r) for an "open" position, which is connected to the sequential control (40) in such a way that when it is actuated, it brings about the normal opening of the swing door (2), however straight the cycle of the swing door may be, and keeps the swing door in the open position for the time in which the switch remains switched on. 17. Device according to one of claims 9 to 16, characterized in that the sequence control (40) of each swing door is designed as a sequence control (40) for one or more other swing doors, so that each movement brought about by a sequence control is reproduced identically by the other swing door or doors. 18. Device according to one of claims 9 to 17, wherein the control means for pivoting the shaft (5) of the Swing door (2) comprising a plurality of contacts (21-22) distributed over the circumference of the shaft, the shaft carrying a plurality of parts forming cams (23a, 23b, 24a, 24b) which act on one or other of the contacts (21-22) as a function of the direction of pivoting of the shaft (5) and the resulting variation in the angular position, while the various contacts (21-22) are connected to the sequential control circuit (40) in order to trigger the intended actuation or acts on a case-by-case basis, characterized in that the cams (23a, 23b, 24a, 24b) on the shaft (5) of the swing door (2) are provided so as to be adjustable on a plate (20) serving as a support and can also be fixed in various angular positions in order to adjust the angular positions between the cams and the contacts actuated by them.