FR2774527A1 - Automatic door closing mechanism - Google Patents

Abstract

The command logic circuit current varier control and interfaces are integrated in a single box so that motor connection and door detection is simplified.

Description

DOOR AUTOMATION DEVICE
The present invention relates to the field of automated devices for controlling and operating a movable wall, such as a door. Such devices actuate the door by supplying an electric power motor connected to a door operating mechanism.

 Automated door operating procedures include a door opening cycle and a closing cycle controlled from a joystick with opening and closing buttons or controlled by external signals.

 The procedures generally provide for an engine stop when it is blocked at the end of the maneuver, sensors being able to indicate the arrival of the door in full opening stop and in complete closing stop.

 The motor is generally supplied by means of a variator which makes it possible to modulate the electric power applied to the motor, in particular by modulation of electric pulse width. It is thus possible to soften the operation of the door, in particular by slowing down the motor before reaching the stop.

 There are automation systems with dimmer mounted in electrical cabinets. This type of cabinet generally contains, in addition to the drive motor supply variator, modular variator control components actuated by buttons or external signals, protection circuits and series of wiring terminals.

 A drawback of these automation systems is that mounting in an electrical cabinet requires particularly complex wiring, the automation circuit adapted to the intended application having to be formed by an electrician by connecting the components one by one in the cabinet.

 Three-phase and programmable variators are known which make it possible to facilitate the electrical installation and the supply of the motor. Three-phase motors are used because their power and robustness are suitable for operating doors. This type of drive provides three-phase power to the motor from a single-phase electrical installation, especially from the domestic sector. The programming of the variator makes it possible to adapt the control currents to the characteristics of the motor and in particular to modulate the power applied to the motor to slow it down before the door stops.

 Programmable three-phase drives are also intended to be mounted in an electrical cabinet with additional automation components, but mounting still has the disadvantage of the complexity of manual wiring.

 Another drawback of known automation systems is their lack of reliability, the wiring being particularly exposed to failures, in particular to accidental disconnections.

 Finally, the known systems implement automated procedures which lack security.

 An object of the invention is to remedy the aforementioned drawbacks.

 The object of the invention is in particular to provide a reliable device, versatile and easy to assemble, even by a non-specialist.

 Another goal is to provide a door automation device that meets safety standards, particularly the AFNOR NFP-C 1500 standard.

 Finally, the invention aims to provide an automation device having a reduced footprint.

 Briefly, these aims are achieved by integrating a logic control circuit and interface circuits with the variator in a single housing, preferably in the housing of the variator itself, the housing having external connection pins to be connected directly to the engine, joystick, and safety devices. The control logic and interface circuits preferably manage safety sensors and effectors to implement a safe automation procedure.

 The invention is embodied with a door automation device, comprising a thyristor variator for supplying an electric motor for operating the door, and a control logic circuit managing input signals from at least a sensor and output signals intended for at least one effector, with the particularity that the variator, the control logic circuit and interface circuits are integrated in a single housing, the housing further comprising at least one connection pin in order to easily connect the motor and each sensor and / or effector to the automation device.

 Preferably, the variator and the logic control circuit are associated on a convector support, the convector support being covered by the housing.

 Preferably, the variator comprises means for memorizing and executing motor control parameters, in particular electrical intensity, acceleration, deceleration, speed of opening and closing of the door.

 The control logic circuit is preferably, according to the invention, connected to door position sensors.

 The control logic circuit preferably comprises, according to the invention, relays controlled by the input signals from the sensors and controlling the output signals intended to control the variator.

 The control logic circuit preferably comprises, according to the invention, an adjustable time delay for opening the door.

 The interface circuits preferably comprise, according to the invention, a power supply and amplification card for the sensor input signals.

 The interface circuits preferably comprise, according to the invention, at least one electrical isolation transformer.

 The control logic circuit preferably manages, according to the invention, signals from photoelectric safety cells, the cells being connected in series, connected to the pin and connected to the interface circuits.

 The invention provides that the device may further comprise means for receiving a remote control by remote control, in particular an antenna radio receiver circuit.

 Other objects, characteristics and advantages of the invention will appear on reading the description and the drawings which follow, given solely by way of non-limiting exemplary embodiments; in the accompanying drawings - Figure 1 shows an automatic door installation controlled by a device according to the invention, - Figure 2 shows the door automation device integrated in a housing according to the invention, - Figure 3 shows a automated procedure implemented by the device according to the invention, - Figure 4 represents a block diagram of the control logic circuit of the device according to the invention, and - Figure 5 represents an electronic diagram of the control logic circuit of device according to the invention.

The overview of Figure 1 shows a wall
By mobile, called door thereafter, which is operated by a power word motor, preferably equipped with a speed reducer. The motor is preferably supplied with three-phase currents U, V and W by a Var drive contained in a Cof box.

 In FIG. 1, various control and safety members implemented according to the invention also appear. First of all, the Cofvar device is connected by a Man control lever comprising for example two buttons for opening and closing the door as well as a switch making it possible to switch from a manual operating mode to an operating mode. automatic.

In addition, the CofVar device is connected to sensors, for example to photocells
CelA, CelB, CelE and CelR and a set of detectors
SH, HH, HI, BI, BB, SB of door position Par. In this application example, the cells CelA and CelB are transmitting and receiving cells. They include a beam emitter E which is reflected by a mirror
MirA or MirB, respectively, before being detected by a photoelectric R receiver. The CelA, CelB cells and the corresponding MirA, MirB mirrors are arranged in front and behind the Par gate, in order to detect the presence of a body in the passage.

 The two cells CelE and CelR are attached to the door Par and arranged adjacent to the closing edge of the door Par. This pair of CelE cells, transmitting, and CelR cells, receiving, makes it possible to detect the presence of a body in contact with the door Par to urgently stop the operation thereof. Alternatively, the contact detection function between the door and a body can be fulfilled by other types of sensors, such as a safety edge.

 The position detectors SH, HH, HI, BI, BB and SB are generally electrical contacts actuated successively by the door Par during its operation.

The contacts SH ', HH', HI ', BI', BB 'and SB' can be, according to the example in Figure 1, arranged along an upright of the door Par, in order to detect its passage through respective positions "High Security", "High High", "High Intermediate", "Low Intermediate", "Low Low" and "Security Low" (extreme position not to be exceeded for security) whose role will appear later.

 Preferably, the position detectors are contacts SH, HH, HI, BI, BB and SB arranged near the engine and actuated by a camshaft driven by the latter.

 Finally, the CofVar device is connected to an effector, here a Lux light signal consisting for example of a flashing beacon or a flash to signal the operation of the Par gate.

Figure 2 shows the detail of the automation device according to the invention arranged in its housing
Cof. The housing consists of a shell of insulating material, in particular plastic. The shell is preferably fixed on a metal support (not shown) serving as a convector to eliminate the heat given off by the Var drive and the other circuits. The body of the vari variator occupies the main part of the housing Cof in which there is integrated according to the invention a circuit Aut of control logic and circuits Amp,
Cox, Interface display. Finally, two connection pins Bor1 and Bor2 are advantageously located in an accessible manner on the lower surface of the Cof box. The Borl, Bor2 terminal blocks are preferably connected directly by soldering against a Cox printed circuit constituting a connection card. The Cox card can include interface components and in particular an electrical Trans transformer allowing, from the mains, to supply the cells with low voltage (for example 24 Volts), between the terminals fg, hi and no, for example. Each transceiver cell is generally provided with two pairs of wires, a pair of supply wires and a pair of wires delivering the detection signals, that is to say the useful signals.

So the input signals from CelA cells,
CelB and CelR are available respectively on the pairs of terminals jk, lm and pq, in the example of Figures 2, 4 and 5.

 The Amp card preferably includes most of the interface components, such as operational amplifier assemblies, relays and possibly one or more isolation isolating transformers to replicate and format input signals from the sensors, c that is to say the joystick, position detectors and photocells.

The control logic Aut circuit includes automation components, such as electrical relays, transistor and diode assemblies, controlled by the signals from the sensors. The Aut circuit provides control signals to the drive
Var and effectors such as the Lux signal and a FF 'motor braking command Mot.

 Advantageously, provision can be made for the Cof unit to include on the front face, a Pan panel for viewing the operating states and for adjusting the timing and sensitivity of the sensors.

 In addition, an advantageous variant provides for integrating the manual opening and closing control buttons, as well as the manual / automatic switch and an emergency stop switch ("punch") in the housing itself. , by encrusting such control and safety members, or some only, on the cover Pan of the housing Cof, the cover preferably being produced in one-piece form.

Advantageously, the control logic Aut circuit implements a secure automation procedure meeting the AFNOR NFP-C 1500 or AFNOR standard.
NFP 25362.

 Advantageously, the procedure provides that the photocells CelA, CelB and CelE / CelR provide respective signals A, B and R serving, not to initiate the operation of the door, but to force the opening of the door if a body is located in the frame of the door during a closing operation of the door. In addition, as a precaution, a failure or a power supply failure of a relay must force the opening of the door.

Figure 3 illustrates a flow diagram of such a procedure. At the start of the procedure, in step 0, the engine is stopped and, depending on the MANUAL or AUTO position of the SAM switch, the procedure will follow a first series of steps 50, 60, 70, 80, 90 and 100 or a second series of steps 49, 59, 69, 79, 89, 99 and 100. The engine
Word remains at a standstill, however, as long as the operator does not give an ascent signal M, or a descent signal D.

 In the manual procedure, if the operator gives the ascent signal M and if the door is not fully open, i.e. if the position detector HH gives a negative signal, the procedure proceeds to step 60 then 70.

 Step 60 actuates the variator Var to start the motor Mot so as to open the door. The door is raised at normal speed, as long as the door does not reach quasi-opening. As soon as the high intermediate HI detector indicates that the door is close to the opening, the procedure goes to step 70 in which the engine idles. When the HH detector indicates that the door has reached full opening, the motor stops, the procedure going to step 100.

 Note that the automation procedure activates a signal as long as the Mot engine is running at normal speed (step 60) or at idle (step 70). Preferably, the procedure turns on the Lux light signal.

Alternatively, the procedure can trigger a non-luminous signal.

Advantageously, the manual procedure provides for interrupting step 60 or 70 and stopping the engine, as soon as the operator no longer presses the push button.
BM, so as soon as the signal M is negative. Thus, the operator does not risk engaging in the passage of the door during its operation.

 Conversely, in the manual procedure, if the operator presses the BD down button (positive D signal) and if the position detector BB gives a negative signal, that is to say does not indicate the full closing of the door, the procedure goes to steps 80 then 90.

 The motor is then actuated to close the door (Lowering) first at normal speed in step 80. As soon as the BI detector in the "intermediate low" position indicates that the door has almost closed, the procedure proceeds to step 90 in which the engine continues to close the door at idle. The procedure triggers the engine to stop (step 100) as soon as the "low down" position detector BB indicates that the door is fully closed.

 The closing (lowering) operation of the door is interrupted, regardless of step 80 or 90 in progress, if the operator no longer presses the BD lowering button, i.e. if the signal D is negative.

 In the automatic procedure, alternatively, the door performs a complete opening and closing cycle after the operator has pressed the up button BM, the maneuver continuing even if the operator releases the button.

 The automatic procedure begins in step 49 when the SAM switch goes to the AUTO position (the BD button not being pressed), the engine always remaining at a standstill.

When the operator presses the BM button (positive M signal), if the HH detector gives a negative signal, i.e. if the door is not fully open, the Var drive controls the running of the motor Mot at normal speed in the direction of opening (up) of the door
By (step 59).

 As soon as the HI detector emits a positive signal, that is to say that the door is almost open, the automated procedure puts the engine at idle (step 69).

 When the HH detector emits a positive signal, that is to say that the door is fully open, the procedure goes to step 79. The engine is then stopped and a time delay T1 is started.

Thus, the door is kept open for a time delay T1 which is preferably adjustable by the user. As soon as the signal T1 is negative, the procedure goes to step 89 and the motor is actuated in the direction of closing (lowering) of the door.

Thus, at the end of the time delay, the door closes automatically, without command from the operator who generally released the push button BM.

 However, during the closing step 89, if the operator presses the up button BM again, or if one of the cells CelA, CelB, CelR detects the presence of a body obstructing the passage of the door Par , that is to say if the signal M is positive or if one of the signals A, B or R is negative, the procedure immediately returns to step 59. Thus, the closing maneuver (step 89) s 'immediately stops and the door reopens (step 59) if the operator controls the rise M or cuts the beam of cells. Such a procedure has the advantage of safety since priority is given to opening the door if the sensors detect an obstacle or the joystick is actuated.

 Normally, if the cells' A, B and R signals are positive and the climb signal M is negative, the door continues to close in steps 89 and 99.

When the signal BI is positive, that is to say that the door is almost closed, the motor Mot is actuated at idle by the variator Var and the door Par slowly completes its closing. At the end of the cycle, when the signal BB is positive, the drive and the motor are stopped in step 100.

 Note that the signal is activated at each 60,70,80,90,59,69,89.99 engine operating step.

Thus, the operator is advantageously informed of any operation of the door by a luminous or other Lux signal. The supply of the Lux light signal can therefore be linked to the supply of the motor Mot. However, the supply of the Lux signal preferably depends on a separate logic function linked to the Aut circuit.

 Generally, during the procedure, in the event of a power failure or an URG emergency stop, the automation stops and signals the fault by flashing an indicator diode. The operator then resets the system by positioning the door at the lowest point BB.

 FIG. 4 shows the block diagram of an exemplary embodiment of the control circuit Aut making it possible to apply such an automation procedure.

 The reference numbers 2, 3, 4 and 6 to 14 are the conventional numbers of the control terminals of a three-phase programmable variator, marketed under the name "Eurotherm 605". Such an implementation is not limiting and the person skilled in the art can easily transpose the functions controlled by the terminals of this variator to another model.

 Without going into the details of the operation of this drive, it can however be noted that the terminals have the following functions - terminal 6 provides low voltage power, - terminal 12 is the ground of the power supply, - terminal 13 provides a voltage (ground) reference frame at a relay when the drive is ready to operate, - terminal 10 authorizes general operation, - terminal 11 authorizes running in the opening direction, - terminal 7 authorizes running in the direction closing, - terminal 3 provides a control voltage source at terminals 2 and 4 which control the running of the motor, - terminal 2 controls running in the closing direction, - terminal 4 controls running in the direction of opening, - terminal 8 conditions operation at slow speed, - terminal 9 conditions operation of the drive, either in switched mode, in which motor operation is interrupted as soon as the operation command is released, or in impulse mode , in which the running of the engine continues during a cycle after the operating command has been released, - terminal 14 optionally controls a mechanical brake of the engine.

In Figure 4, it appears, in addition to the detectors
BB, BI, HI, HH mentioned above, a "low safety" position detector SB and a "high safety" SH detector, which make it possible to detect a movement of the door beyond full closing and beyond full closing. opening.

The position detectors SB and SH are closed contacts in the normal state in which the door moves between the position BB of full closing and the position HH of full opening. The SB and SH detectors are connected in series with an emergency URG switch between the supply terminal 6 and the terminal 10 controlling the operation. Advantageously and safely, it is therefore sufficient for an overstepping of the position to open the contact SB or SH or for the button URG to be actuated, or else for the power supply to be faulty to stop the operation of the device.

For greater safety, the operation of the motor in the direction of closing the door is conditioned by the normal state of several BB sensors,
CelA, CelB, CelR and two relays KA1, KA2.

 The relay KA1 is supplied by the position detector BB, the contact of which is closed in the normal state. The relay KA1 controls a switch K1 acting on terminal 7 which conditions the operation in the closing direction (Descent mode). If the door reaches the "low down" position, the relay KA1 is no longer supplied and opens the switch K1 prohibiting the "Lowering mode".

 Similarly, the KA2 relay is arranged in series with the CelR, CelB and CelA photocells.

The cells are preferably in the on state when they receive a light beam and when they are supplied. Relay KA2 controls a switch
K2, which is arranged in series with power supply terminal 6, switch K1 and terminal 7 "Mode
Descent".

When one of the cells CelA or CelB or CelR (or more) no longer receives a light beam and goes into a non-passing state, the relay KA2 is no longer supplied and the switch K2 is open, prohibiting the "Mode
Descent ", thus closing the door.

 In addition, when the relay KA2 is no longer supplied with power, it closes a switch KM which controls the opening of the door by acting on terminal 4 ("up"). Advantageously, the power supply failure of the relay KA2, on the one hand prohibits the closing of the door and, on the other hand, forces the opening of the door.

 However, in the normal state, that is to say if the relays KA1 and KA2 are supplied, the "Lowering mode" is authorized and it is enough to press the BD lowering button to short-circuit the terminals 3 and 2 ("Descent"), thus controlling the Var drive and the Mot motor to close the Par door.

 Conversely, engine operation is allowed until the door is fully opened.

In fact, the HH "high up" position detector connects the supply terminal 6 to terminal 11 "Ascent mode" which conditions the operation of the drive and the motor in the direction of door opening.

 The HH detector is a contact closed in the normal state so as to allow the motor to run in the opening direction. Then simply press the up button BM to short-circuit terminals 3 and 4 ("Up") and control the Var drive and the Mot motor so as to open the Par door. Recall that, advantageously, it is also enough to cut a beam of photocell CelA or CelB or CelE / CelR so that the non-supplied relay KA2 lets the KM switch close, forcing the opening command of the door.

 Idling is controlled by the BI and HI detectors of "low intermediate" and "high intermediate" position. Contacts BI and HI, normally open, are connected in parallel between terminal 6 of power supply and terminal 8 of "Idle mode". The BI contact closes when the door is placed between the quasi-closing and the complete closing so as to put the motor at idle via the variator. Likewise, the HI contact closes when the door is placed between quasi-opening and full opening, which puts the drive and the motor in idle mode.

 The motor can therefore operate at normal speed only when terminal 8 "Idle mode" of the drive is not connected to the power supply, that is to say when the contacts BI and HI are open, therefore when the door is located between the "intermediate low" and "high intermediate" position.

 Finally, the SAM double-switch for manual or automatic mode governs the command mode by impulse or by constant pressing of the opening or closing orders coming from the BM up or BD down buttons.

 In manual mode, the SAM double switch activates terminal 9 to obtain the switched mode and deactivates the KT relay. In this case, the opening or closing commands are performed only as long as the BM or BD push button is held down.

 In automatic mode, on the other hand, the dual SAM switch deactivates terminal 9 and connects terminal v of the HH detector to the supply terminal of the KT relay.

The Var drive then operates in impulse mode, that is to say, it is enough to press the push button BM to start a complete opening and closing cycle of the Par door. Likewise, it suffices that the beam of one of the cells is interrupted for an instant, and that the relay KA2 releases the switch KM for an instant by closing it, so that the variator accepts the rising pulse on terminal 4 and performs a complete opening and closing cycle.

 During such a cycle, when the door Par reaches full opening and the HH "high-high" position switch switches, the "up mode" is deactivated on terminal 11, while the delay relay KT is supplied via the connection v and one of the SAM switches.

From this moment, the delay T1 of the relay KT is triggered, and once this delay T1 has elapsed, the relay closes the switch KD, short-circuiting terminals 3 and 2, to trigger the closing operation of the door Par . Thus, advantageously and in accordance with the flow diagram of FIG. 3, the automatic cycle comprises a phase of complete opening of the door then a time delay and finally a phase of complete closing of the door Par.

 Preferably, the time delay T1 is manually adjustable by the operator using a potentiometer PT visible in the overview of FIG. 2 and in the example of the electronic diagram in FIG. 5.

As illustrated in FIG. 5, the timing circuit can be constituted by a TT transistor assembly (preferably a Darlington transistor) with RT basic resistance polarized by a bridge with adjustable time constant T1 with potentiometer PT and capacitor
CT. The TT transistor assembly supplies the coil of the relay KT which is protected against overvoltage by a freewheeling diode DT. The other relays KAM, KA1 and KA2 are also supplied with protection by freewheeling diode DM, D1 and D2 respectively.

 Also shown, on the electronic embodiment of the control logic circuit Aut in FIG. 5, are arrangements with light-emitting diodes LR0, LR1, LR2 and LV which, as a variant, make it possible to display, on the display screen Seen from the Pan panel of the Cot box, the operating states of the automation device according to the invention.

 Each LR0, LR1, LR2 or LV diode is protected by a resistor R0, R1, R2 or RV of adequate value and lights up to indicate the normal operation of a corresponding relay, either KAM, KT, KA1 or KA2.

 The diagram in FIG. 5 also shows, as an option, high-voltage KS and KF relays. The relay KS is for example controlled by the terminal u which is supplied when the detector BB is an open contact, that is to say when the door Par is not completely closed.

 The KF relay supplies an electromechanical FM brake to brake the motor Electric motor of the door Par.

 Other embodiments, improvements, characteristics and advantages of the door automation device presented here can be implemented by a person skilled in the art without departing from the scope of the present invention, as defined in the claims below.

Claims (10)

 1. Door automation device (Par), comprising a variator (Var) with thyristors supplying (U, V, W) an electric motor (Mot) for operating the door, and a circuit (Aut) control logic managing input signals (M, D, SB, BB, BI, HI, HH, SH, A, B, R) coming from at least one sensor (BM, BD, CelA, CelB, CelR) and output signals intended for at least one effector (Lux), characterized in that the variator (Var), the control logic circuit (Aut) and interface circuits (Amp, Cox) are integrated in a single housing (COF), the housing further comprising at least one connection pin (Borl) in order to easily connect the motor and each sensor and / or effector to the automation device.  2. Automation device according to claim 1, characterized in that the variator (Var) and the circuit (Aut) control logic are associated on a convector support, the convector support being covered by the housing (COF).  3. Automation device according to claim 1 or 2, characterized in that the variator (Var) comprises means for memorizing and executing motor control parameters, in particular electrical intensity, acceleration, deceleration , speed of opening and closing of the door.  4. Automation device according to one of claims 1 to 3, characterized in that the control logic circuit (Aut) is connected (u, v, w) to sensors (BB, HH) of position of the door .  5. Automation device according to one of claims 1 to 4, characterized in that the control logic circuit (Aut) comprises relays (KA1, KA2, KT) controlled by the input signals from the sensors and controlling the output signals for controlling the drive.  6. Automation device according to one of claims 1 to 5, characterized in that the circuit (Aut) control logic comprises an adjustable time delay (Tempo T1) (PT) for opening the door.  7. Automation device according to one of claims 1 to 6, characterized in that the interface circuits include a card (Amp) for supplying and amplifying the sensor input signals.  8. Automation device according to one of claims 1 to 7, characterized in that the interface circuits comprise at least one transformer (Trans, Isol) of electrical isolation.  9. Automation device according to one of claims 1 to 8, characterized in that the logic circuit (Aut) manages signals coming from photoelectric safety cells (CelA, CelB, CelR), the cells being mounted in series, connected to the pin (Borl) and connected to the interface circuits (Beetle, Amp).  10. Device according to one of claims 1 to 9, characterized in that it further comprises means for receiving a remote control by remote control, in particular an antenna radio receiver circuit.