EP3508675B1 - Locking device for a door - Google Patents

Description

The invention relates to a locking arrangement for a door, with a holding device for locking the door, in particular in an open position, wherein the holding device can be transferred from a locking state to a releasing state with the supply of electrical energy, according to the preamble of claim 1 The invention relates to a method for operating a locking arrangement.

Hold-open arrangements are widespread in building technology for door and gate systems with which fire protection barriers are equipped in accordance with the applicable regulations. The hold-open arrangement enables a door equipped with a mounted door closer to be held open either at a specified or selected angle until it is triggered electrically. In previously known solutions, the individual components of the locking arrangement are connected to the building's electricity network for energy supply. In particular, when retrofitting or expanding existing buildings, cabling to the building's electricity network creates a lot of effort. In order to lay the cabling in a visually acceptable manner, it may be necessary to pry open the walls and ceilings so that the cables can be laid "under plaster". In the case of historical building materials, considerable damage can be caused by retrofitting with hold-open devices for fire doors.

the WO92 / 04519 A1 discloses a locking arrangement in which the locking arrangement is transferred into the releasing state when energy is supplied. The energy is provided by a battery. The locking arrangement is switched to the releasing state when the battery voltage falls below a certain level and when the battery is removed.

The invention is based on the object of providing a locking arrangement and a method for operating a locking arrangement which avoids the aforementioned disadvantage, in particular providing a locking arrangement and methods which are easy to assemble.

The object is achieved by the independent claim 1. Advantageous developments of the locking arrangement are specified in the dependent device claims, the description and in the figures. Furthermore, the invention is also achieved by the features of the independent method claim according to the independent claim 14. Advantageous developments of the method are given in the description and in the figures. Features and details that are described in connection with the locking arrangement according to the invention also apply in connection with the method according to the invention and vice versa.

According to the invention it is provided that the locking arrangement is designed to transfer the holding device from the locking state to the releasing state if a defect occurs in the intended supply of the holding device with electrical current and optionally also a predetermined voltage value for an energy storage unit that is used for supply of electrical energy for the holding device is used.

In the locking arrangement according to the invention, the operating current principle is implemented. It is provided that the locking arrangement is designed to transfer the holding device from a locking state to a releasing state by supplying electrical energy. In particular, it is possible that the holding device can be in the locking and / or releasing state without the supply of electrical energy. This enables energy-saving operation of the locking arrangement. As a result of the energy-saving operation, it is possible to dispense with cabling to the building's electricity network and thus to provide an assembly-friendly locking arrangement. The locking state of the holding device is understood to mean, in particular, a state that is to be locked the door is used by the holding device. The releasing state is understood to mean, in particular, a state in which the holding device has released the door so that the door can be moved, in particular closed. In the released state, a door operator present in addition to the locking arrangement is allowed, in particular, to close the door from the previously held position. The transfer of the holding device from the locking to the releasing state thus serves in particular to release the door. It can optionally be provided that the holding device can be transferred from the releasing state to the locking state by supplying electrical energy.

As a result of the inventive design of the locking arrangement, the holding device is always transferred to the releasing state when transfer can no longer be reliably guaranteed at a later point in time, in particular in the event of a fire. In particular, the transfer to the releasing state always takes place when only the energy is reliably available for a specified number of transfers, in particular for one transfer, and / or when the initiation of the transfer to the releasing state is no longer reliably guaranteed. A defect in the intended supply of the holding device with electrical current is therefore also to be understood as such defects which relate to the control of the transfer.

The locking arrangement according to the invention achieves a high level of reliability in the release, so that the door is released safely and reliably in the event of a danger, in particular a fire. The locking device is particularly preferably battery-operated and therefore independent of an external power supply. The locking arrangement is in particular free of an electrical connection to a building's electricity network.

The energy storage unit can have one or more electrochemical energy stores. The electrochemical energy store can be designed as a battery or an accumulator. The multiple energy storage can be connected in series and / or in parallel. For example, several, e.g. B. two, energy storage in series and the rows of energy storage to each other in turn can be connected in parallel. In particular, the energy storage unit can be designed as an energy storage package with a plurality of energy stores.

The locking arrangement preferably comprises a hazard detector, in particular a fire and / or smoke alarm. In particular in the event of a fire, the hazard detector can transmit a trigger signal to a control device of the locking arrangement. The control device then controls the holding device so that the holding device is transferred from the locking to the releasing state.

The locking arrangement can have a slide element in a slide rail. The sliding element can preferably be fixed and / or released within a sliding rail by the holding device. That is, when the holding device is transferred from the locking to the releasing state, the sliding element is released, so that the sliding element can be moved in the sliding rail. The sliding element can be connected to the door. In the locking state, the sliding element is fixed in the sliding rail by the holding device. The holding device, in particular a holding mechanism of the holding device, preferably blocks the sliding element in the sliding rail in the locking state. In the released state, the slide element is movably arranged in the slide rail, so that the door can also be moved. Such a holding device is in the DE 10 2010 061 246 A1 disclosed, to which reference is made in full.

In particular, the energy storage unit, the slide rail, the hazard detector, the holding device and the control device can be provided for arrangement on a frame of the door. The energy storage unit, the slide rail, the hazard detector, the holding device and the control device are particularly preferably arranged in a common housing.

In particular, the holding device is designed to lock the door in the open position. Accordingly, the locking arrangement is preferably designed to transfer the holding device into the releasing state when the trigger signal is sent out, so that the door can be closed.

It is conceivable that the locking arrangement has at least one intermediate energy store, which is designed in particular as at least one capacitor element, in which an amount of electrical energy can be stored, by means of which the holding device can be transferred from the locking state to the releasing state. In particular, the sliding element can be released by the amount of energy. Because an intermediate energy store is provided, the holding device can be transferred to the releasing state at least once even in the event of a defect in the energy storage unit or an electrical connection line of the energy storage unit. The installation of the intermediate energy store can contribute to the reliability of the hold-open arrangement, which operates according to the open-circuit principle.

In addition, it is possible that only the intermediate energy store can provide a sufficient current strength for the magnetic coil. The recommended maximum continuous current of an energy store of the energy storage unit, however, can be, for. B. between 20 mA and 200 mA, preferably between 60 mA and 120 mA. The maximum pulsed discharge current of the energy store can be between 80 mA and 400 mA, preferably between 150 mA and 250 mA.

Preferably, at least twice the amount of energy that is necessary for transferring the holding device can be stored in the intermediate energy store. The intermediate energy store is in particular connected electrically between the energy storage unit and the holding device. It is particularly preferable for the amount of energy to be fed to the energy storage unit only via the intermediate energy store of the holding device. Of the The intermediate energy store can in particular only be chargeable from the energy storage unit.

The control device, in particular a microcontroller, is designed to initiate that the holding device is transferred from the locking to the releasing state if a defect occurs in the intended supply of the holding device with electrical current and optionally the voltage falls below the specified value. In this case, the control device can in particular detect the defect and optionally also the undershooting of the specified voltage value.

It can be the case that a first voltage measuring point is provided for determining a voltage value characterizing the electrical voltage of the energy storage unit. If the voltage value determined by the first voltage measuring point is below the specified voltage value, the holding device is transferred to the releasing state. The first voltage measuring point can be connected electrically in parallel to the energy storage unit and the control device. The predefined voltage value can in particular be a voltage value that can be determined at the first voltage measuring point and characterizes the predefined voltage of the energy storage unit. The voltage measurement can be carried out at the first predetermined time intervals. The first predetermined time intervals can be stored in the control device. The control device can perform the voltage measurement. Here, at the first voltage measuring point, for. B. a voltage divider may be provided. Alternatively or additionally, the first voltage measuring point can have a voltmeter which transmits the determined voltage value to the control unit. The control unit compares the determined voltage value with the specified voltage value and, if necessary, allows the holding device to be transferred to the releasing state. The predetermined voltage value can be stored in the control device. Above the predetermined voltage value, a predetermined threshold value can be provided for a voltage value determined by the first voltage measuring point, at which a Warning is issued. For example, a light-emitting element of the locking arrangement can light up as a warning. Here, the lighting element z. B. blink. The warning informs an operator that the energy storage unit is to be replaced soon.

The individual electrochemical energy store can have at least a ratio V1 of the nominal voltage to a recommended maximum continuous current of 10 Ω V1 40 Ω, preferably 15 Ω V1 30 Ω. Additionally or alternatively, the individual energy store can have a ratio V2 of the nominal voltage to a maximum pulsed discharge current of 20 Ω V2 100 Ω, preferably 30 Ω V2 70 Ω. This prevents critical heating of the energy store. Additionally or alternatively, a fuse can be provided in the energy storage unit. This can thus contribute to the reliability of the locking arrangement working according to the open-circuit principle.

There is preferably a defect in the intended supply of the holding device with electrical current if a short circuit and / or an interruption occurs within the energy storage unit and / or in the connection line of the energy storage unit. Thus, the holding device is transferred from the locking to the releasing state. In this case, the intermediate energy store can provide the electrical energy. The short circuit or the interruption can be caused by the voltage value determined at the first voltage measuring point, which is below the specified voltage value.

According to the invention it is provided that the holding device has an electrically permeable component. With the help of the electrically permeable component, the releasing state can be achieved. The electrically flowable component can, for. B. be designed as a solenoid. Through the component is an element of the holding device, for. B. an anchor, movable through which the transfer to the releasing state takes place. For example, a blockage of a holding mechanism of the Holding device are lifted. The component can be part of an actuator, e.g. B. an electromagnet or an electric motor. The electrically flowable component can be flowed through with electrical current with different current directions. The magnetic fields generated in this way can move the element between two positions, which correspond to the locking state and the releasing state. This is done again on the DE 10 2010 061 246 A1 referenced.

The locking arrangement has a measuring point for determining an electrical current that flows through the electrically permeable component, with a defect in the intended supply of the holding device with electrical current if the determined current is outside a predetermined value range. The control device can determine the current strength. A resistor can be provided at the measuring point. In particular, the current strength is determined by measuring a voltage applied to the resistor. In addition, the current measuring point can have an ammeter, which transmits the measured current intensity to the control unit. The control unit checks whether the measured current intensity is within the specified range of values and, if not, allows the holding device to be transferred to the releasing state. An upper limit of the value range can e.g. B. serve to determine a short circuit. A lower limit of the range of values can e.g. B. serve to determine whether there is an interruption in the circuit and / or whether there is sufficient current to generate a sufficient magnetic field to transfer the holding device to the releasing state.

The determination of the current intensity is carried out at second predetermined time intervals. The determination of the current intensity is therefore only carried out for test purposes. Therefore, the determination of the current intensity can also then take place if no transfer to the releasing or the determining state is to take place. The second specified time intervals can be stored in the control device. The second predetermined time intervals can in particular be identical. For example, such a measurement can be taken every twenty-four hours. So that the flow of current through the electrically permeable component does not transfer to the releasing state during a test, it is provided according to the invention that, in order to carry out the measurement, which is carried out for test purposes, the electrically permeable component is energized with a polarity such that the energization has no effect on the state of the holding device.

In addition, the current intensity is determined in the event of a transition to the releasing state triggered by the trigger signal.

The energy storage unit can be connected to the intermediate energy store via a voltage converter. A higher electrical voltage can be generated in the intermediate energy store than in the energy storage unit via the voltage converter. In particular via the voltage converter, the control device can initiate charging of the intermediate energy store.

It can be the case that a second voltage measuring point is provided for determining a voltage value characterizing the electrical voltage of the intermediate energy store. The second voltage measuring point can be connected electrically in parallel to the energy buffer and the control device. The voltage measurement at the second voltage measuring point can be carried out at predetermined third time intervals. The third predetermined time intervals can be stored in the control device. The control device can carry out the voltage measurement at the second voltage measuring point. A voltage divider can be provided at the second voltage measuring point. Alternatively or additionally, the second voltage measuring point can have a voltmeter which transmits the measured voltage value to the control unit.

The voltage value characterizing the energy buffer store, which was determined at the second voltage measuring point, is preferably compared with a setpoint voltage value. If the voltage value falls below the setpoint voltage value by a predetermined amount, the control device in particular causes the intermediate energy store to be charged to the setpoint voltage value. The nominal voltage value can be stored in the control unit. The predetermined time intervals can in particular be identical. This ensures that the intermediate energy store has stored a sufficient amount of energy to transfer the holding device to the releasing state and has not discharged too far over time.

In addition, there is preferably a defect in the intended supply of the holding device with electrical current if charging of the intermediate energy store fails to a target voltage value within a predetermined charging period. To this end, the control unit can in particular check whether the energy buffer has reached the setpoint voltage value within the specified charging period. If the nominal voltage value is not reached within the charging period, there is a defect in the intended supply of the holding device with electrical energy. In this case, the holding device is transferred to the releasing state. For example, there may be a short circuit in the energy buffer or the voltage converter may be defective. The intermediate energy store can also be aged and have a low capacity, so that it is charged to the setpoint voltage value too quickly.

The predetermined charging time period Δt ₄ can thus be limited by an upper limit value t _above and a lower limit value t _below greater than zero. Here, t _bottom and t _top can be selected depending on the amount to be fallen below and the capacitance of the capacitor element. As a value, t _{below can} e.g. B. between 0.1 s and 10 s, preferably between 1 s and 4 s. As a value, t _{above can} e.g. B. between 10 s and 60 s, preferably between 5 s and 30 s. For example, the charging time period Δt _{4 can be} given by 0.1 s = t _below ≤ Δt ₄ ≤ 60 s = t _above or 1s = t _below ≤ Δt ₄ ≤ 30 s = t _above or 3 s = t _below ≤ Δt ₄ ≤ 16 s = t _above . In particular, by the lower limit t _down aging of the power store, z. B. by 10% to 50%, preferably by 20% to 40%, are taken into account.

It is conceivable that there is also a defect in the intended supply of the holding device with electrical energy if a voltage drop determined at the second voltage measuring point when the energy buffer is discharged is greater than a given maximum value for a given discharge period. Due to the aging of the energy buffer, the energy buffer can lose capacity. It is also conceivable that the intermediate energy store has different capacities at different temperatures. In the case of a lower capacity, however, a lower amount of charge is stored in the intermediate energy store at a given voltage. In order to prevent the stored amount of charge from being insufficient for transferring the holding device to the releasing state, the voltage drop when the energy buffer is discharged is checked for the specified discharge period, which is an indicator of the stored amount of charge and thus the capacity of the energy buffer.

The maximum value for the voltage drop and / or the discharge period can be stored in the control device. The comparison between the maximum value and the determined voltage drop can be made by the control device.

The energy buffer is preferably discharged to determine the voltage drop in the discharge period by performing the test described above, in which the electrically flowable component is energized with such a polarity that the energization has no effect on the state of the holding device. Thus, both the current flow through the electrically permeable component and the capacity of the energy buffer can be checked in one process.

It may be that the locking arrangement has at least two mutually redundant intermediate energy stores and / or at least two mutually redundant electrically flowable components. In this way, in the event of a defect in an intermediate energy store or in a component that can flow through electrically, the holding device can be reliably transferred into the releasing position. This makes it possible that in the event of a serious defect in the intermediate energy store and / or the electrically permeable component through the redundant energy intermediate store and / or the redundant electrically permeable component, the holding device can nevertheless be transferred to the releasing state. The serious defect can z. B. be a short circuit in the energy buffer. Each electrically permeable component is designed in such a way that the releasing state can be brought about without the aid of the further electrically permeable component.

At least two subsystems are preferably provided, each of which comprises at least one intermediate energy store and an electrically permeable component, the subsystems each being designed independently of one another. In particular, the subsystems are redundant to one another.

It can be provided that the locking arrangement has at least two control devices which monitor each other, with a defect in the intended supply of the holding device with electrical current if a control device is faulty. For example, in the absence of a cyclic trigger signal, one of the control devices can determine a defect in the other control device and initiate the transfer of the holding device to the releasing state. The control devices can monitor each other at predetermined monitoring time intervals which are in particular stored in the control devices. It can also be provided that the control devices monitor themselves. For this purpose, for example, CPU and RAM tests can be carried out. In particular, the self-monitoring is carried out at regular, predetermined self-monitoring intervals. Used when monitoring a Error, e.g. B. determined during the CPU or RAM test, a defect in the intended supply of the holding device with electrical current is detected and the holding device is transferred to the releasing state, in particular by the further intact control device.

The at least two control devices can each be part of a subsystem. Thus, each subsystem can range from the receipt of a trigger signal to the electrically permeable component of the holding device. In this case, the holding device can be transferred into the releasing state independently of the other subsystem by each of the subsystems.

In addition, there is preferably a defect in the intended supply of the holding device with electrical current if the control device does not exit an energy-saving mode. In a time period in which the control device does not have to carry out any monitoring or transfer to the releasing state, the control device can be in an energy-saving mode. If the control device cannot leave the energy-saving mode, the holding device is transferred to the releasing state. This defect can in particular be detected by another control device.

It is conceivable that a button is provided in order to enable the holding device to be arranged again in the locking state after a transition to the releasing state, in particular after receiving a fire alarm signal and / or changing the energy storage unit. It can also be the case that after a defect has been rectified, in particular a short circuit z. B. in the energy buffer or in the energy storage unit, a renewed transfer to the determining state can be made possible by pressing the button and a self-test. Alternatively, it can be provided that when the button is actuated, the holding device can only be transferred to the locking state again if a fire alarm signal has been received and / or if a cyclic hazard detector signal fails to appear and / or if the energy storage unit has been replaced.

• Bei einem Kurzschluss in der Anschlussleitung der Energiespeichereinheit und/oder in dem Energiezwischenspeicher bei einer Beschädigung weitere Bauteile. Hierbei kann die Beschädigung durch einen Selbsttest ermittelt werden,
• Bei dem an der zweiten Spannungsmessstelle ermittelter Spannungsabfall bei einer Entladung des Energiezwischenspeichers für eine vorgegebene Entladezeitspanne, der größer als ein vorgegebener Maximalwert ist,
• Bei einem Unterschreiten der an der ersten Spannungsmessstelle ermittelten Spannungswerts für die Energiespeichereinheit unter den vorgegebenen Spannungswert bevor einem Wechsel der Energiespeichereinheit,
• bei einer Aufladung des Energiezwischenspeichers auf eine Sollladespannung außerhalb der vorgegebenen Ladezeitspanne,
• bei einer defekten Steuervorrichtung.

Provision is preferably made for the holding device to remain in the releasing state after a certain defect and / or after falling below the predetermined voltage value before changing the energy storage unit. I. E. an attempt to lock the door in the open position again fails. In this case, a renewed transfer of the holding device into the locking state can be prevented in particular when the pushbutton is actuated. For this purpose, in particular, an energization of the electrically flowable component in a current direction that causes the locking state can be prevented. An additional defect in which the holding device remains in the releasing state can be at least one of the following defects:

• In the event of a short circuit in the connection line of the energy storage unit and / or in the intermediate energy store in the event of damage to further components. The damage can be determined by a self-test,
• In the case of the voltage drop determined at the second voltage measuring point in the event of a discharge of the energy buffer for a given discharge period, which is greater than a given maximum value,
• If the voltage value determined at the first voltage measuring point for the energy storage unit falls below the specified voltage value before the energy storage unit is changed,
• when the energy buffer is charged to a target charging voltage outside the specified charging period,
• in the event of a defective control device.

It can be the case that a capacitor is provided in order to supply the control device with electrical energy in the event of failure of the energy supply unit supply. In the case of redundant control devices, in particular a capacitor is assigned to each control device. In particular, at least the amount of energy that is necessary for the control device to initiate the transfer of the holding device into the releasing state can be stored in the capacitor.

The predetermined voltage value U _V1 can be a voltage value of the energy storage unit at which the holding device can only be securely transferred to the releasing state once. Additionally or alternatively, the specified voltage _{value U V1} can be a value from an interval 0.5 * U _N U _V1 0.9 * U _N , preferably 0.65 * U _N U, depending on the nominal _{voltage U N of the energy storage unit V1} 0.9 * U _N , particularly preferably 0.75 * U _N U _V1 0.85 * U _N. For example, the specified voltage _{value U V1 can be} a value between 5V and 6.5V, preferably between 5.5V and 6.3V.

The threshold value Us is above the specified voltage value U _V1 . Here, the threshold value can additionally be a value from an interval 0.7 * U _N U _S 0.98 * U _N , preferably 0.8 * U _N U _S 0.98 * U _N , particularly preferably 0.9 * U _N ≤ U _S ≤ 0.95 * U _N. For example, the threshold value Us can be a value between 6 V and 7.0 V, preferably between 6.5 V and 6.9 V.

The setpoint voltage value U _V2 is to be selected in such a way that, depending on the capacitance of the capacitor element used, the amount of charge is sufficient to transfer the holding device into the releasing state. The amount of charge is preferably sufficient for an n-fold conversion into the releasing state, where n is selected from the range 2 n 4, preferably 2 n 10. For example, U _V2 can be a value from a range with 8V U _V2 16 V, preferably 10V U _V2 14 V.

The amount B by which the voltage _{value U 2} determined at the second voltage measuring point may fall below the target voltage _{value U V2} without charging can be selected as a value from the interval 0.05 U _V2 B (n-1) / n U _V2 will. Additionally or alternatively, the amount B can be a value from an interval 0.05 U _V2 B 0.4 U _V2 , preferably 0.05 U _V2 B 0.2 U _V2 , particularly preferably 0.05 U _V2 B ≤ 0.1 U _V2 . For example, B can be chosen as a value between 0.5V and 1.5V.

The maximum value ΔU _V can be selected such that an aging of the capacitance of the capacitor element by 10% to 50%, preferably by 20% to 40%, is taken into account. Correspondingly, the maximum value ΔU _V can correspond to a value from 1.1 to 2 times, preferably 1.25 to 1.7 times, the voltage drop of the unaged capacitor element for the specified discharge period. For example, the maximum value ΔU _{V can be} a value between 0.3 V and 1 V.

The lower limit I ₀ and the upper limit I ₂ for the current strength I _magnet are dependent on the current strength that is required and / or preferred for the electrically permeable component, in particular the magnetic coil, e.g. B. on the rated current, depending. The lower limit I ₀ can, for. B. be chosen so that the magnetic coil above the lower limit I ₀ generates a sufficient magnetic field for the transfer of the holding device to the releasing state. The upper limit I ₂ can, for. B. be chosen so that there is a short-circuit current _{above the upper limit I 2.} For example, the lower limit I _{0 can} be a value from the interval 0.5 * I _magnet I ₀ 0.95 * I _magnet , preferably 0.6 * I _magnet I ₀ 0.9 * I _magnet , preferably 0 , 75 * I _magnet ≤ I ₀ ≤ 0.85 * I _{magnet must be} selected. For example, the upper limit I _{2 can} be a value from the interval 1.3 * I _magnet I ₂ 3 * I _magnet , preferably 1.5 * I _magnet I ₂ 2.5 * I _magnet , preferably 1.7 * I _magnet ≤ I ₀ ≤ 2.2 * I _{magnet must be} selected. Purely by way of example, the lower limit I _{0 can be selected} as a value from the interval 300 mA I ₀ 575 mA, preferably 350 mA I ₀ 550 mA, particularly preferably 400 mA I ₀ 500 mA. The upper limit I _{2 can be selected} as a value from the interval 800 mA I ₂ 2000 mA, preferably 1000 mA I ₂ 1500 mA. It is conceivable that different currents are required for the magnet coil of each subsystem.

The predetermined discharge period Δt ₂ can be a very short period of time in order not to discharge the energy storage unit unnecessarily. For example, the specified discharge time period Δt ₂ can be specified as a time between 10 ms and 2 s, preferably between 20 ms and 80 ms.

It may be sufficient to choose the second predetermined time interval Δt ₃ as a large time interval. For example, Δt ₃ can be selected as a value from the interval 2 h Δt ₃ 48 h, preferably 6h Δt ₃ 36 h, particularly preferably 12h Δt ₃ 30 h.

The first _{predetermined time interval Δt 1} , the third predetermined time interval Δt ₅ , the monitoring and / or the self-monitoring _{time interval Δt 6} , Δt ₇ can in particular be identical. For example, 2s Δt ₁ , Δt ₅ , Δt ₆ , Δt ₇ 20 s, preferably 4s Δt ₁ , Δt ₅ , Δt ₆ , Δt ₇ 12 s. In particular, Δt ₁ , Δt ₅ , Δt ₆ , Δt ₇ 8s. It is conceivable that Δt ₁ , Δt ₅ , Δt ₆ , Δt _{7 are} also selected as different values within the intervals.

The object of the invention is also achieved by a method for operating a locking arrangement according to claim 14.

Fig. 1

eine erfindungsgemäße Feststellanordnung gemäß einem Ausführungsbeispiel,

Fig. 2

ein schematisches Schaltbild der erfindungsgemäßen Feststellanordnung gemäß dem Ausführungsbeispiel,

Fig. 3

ein erstes nicht erfindungsgemäßes Verfahren, das in einer erfindungsgemäßen Feststellanordnung hinterlegt werden kann,

Fig. 4

ein zweites erfindungsgemäßes Verfahren, das in einer erfindungsgemäßen Feststellanordnung hinterlegt ist,

Fig. 5

ein drittes nicht erfindungsgemäßes Verfahren, das in einer erfindungsgemäßen Feststellanordnung hinterlegt werden kann, und

Fig. 6

ein viertes nicht erfindungsgemäßes Verfahren, das in einer erfindungsgemäßen Feststellanordnung hinterlegt werden kann.

In the following, the invention is shown on the basis of an exemplary embodiment and explained in more detail in the figures. This shows:

Fig. 1

a locking arrangement according to the invention according to an embodiment,

Fig. 2

a schematic circuit diagram of the locking arrangement according to the invention according to the embodiment,

Fig. 3

a first method not according to the invention that can be stored in a locking arrangement according to the invention,

Fig. 4

a second method according to the invention, which is stored in a locking arrangement according to the invention,

Fig. 5

a third method not according to the invention, which can be stored in a locking arrangement according to the invention, and

Fig. 6

a fourth method not according to the invention, which can be stored in a locking arrangement according to the invention.

Fig. 1 shows a locking arrangement 1 according to the embodiment. A door 2 is shown. A door operator 3, designed as a door closer, is mounted on this door 2 in addition to the hold-open arrangement 1. A closer spring is integrated in the door operator 3. The force of the closer spring is transmitted from the closer spring via a linkage 4 to a sliding element 9. The sliding element 9 is guided in a slide rail 5 of the locking arrangement 1 mounted on the lintel side.

Furthermore, the locking arrangement 1 comprises a hazard detector 8. This is designed as a smoke alarm and / or fire alarm. The danger detector 8 is equipped with further signal transmitters 6, in particular further danger detectors (cf. Figure 2 ) can be connected, the signal generators 6 being mounted in particular on the ceiling. Another part of the Locking arrangement 1 is a holding device 7 with which the sliding element 9 can be locked. Here, the holding device 7 is in the locking state SZ. By securing the sliding element 9, the door 2 can be held in the open position. The holding device 7 is controlled by and within two subsystems 25, the structure and function of which are shown below with reference to FIG Figure 2 is described. The holding device 7 is controlled by the subsystems 25 in such a way that the sliding element 9 is determined in particular until the hazard detector 8 transmits a trigger signal to the subsystems 25.

In the event of smoke or fire developing, this is detected by the hazard detector 8 and / or by the external signal transmitters 6. The external signal transmitters 6 are coupled to the hazard detector 8 by radio. The hazard detector 8 generates the trigger signal when a fire or smoke has been detected. This trigger signal is forwarded to the subsystems 25, as a result of which the holding device 7 releases the sliding element 9, the holding device being transferred to the releasing state GZ. The energy stored in the closing springs of the door operator 3 can thus close the door leaves of the door 2.

Figure 2 shows a schematic circuit diagram of the locking arrangement 1. In the in Figure 2 There are two signal transmitters 6 which communicate with the hazard detector 8 via a radio link. The signal generators 6 are thus able to transmit a signal to the hazard detector 8 when the signal generators 6 detect smoke or a fire. The hazard detector 8 is also designed to detect a fire.

In addition, the locking arrangement 1 has two subsystems 25, the hazard detector 8 being connected to the subsystems 25. The hazard detector 8 is connected to two control devices 11. The control devices 11 have an identical function. The control devices 11 are in particular microcontrollers. The control devices 11 are connected to one another via a data line 20 for data exchange, so that a mutual monitoring of the control devices 11 is realized. This allows defects within one subsystem 25 to be recognized by the other subsystem 25. Thus, redundancy within the locking arrangement 1 is provided.

The control devices 11 are set up to control magnetic coils 10. Each subsystem 25 has at least one magnet coil 10, so that each magnet coil 10 of a subsystem 25 can be controlled by the control device 11 of the subsystem 25. The magnetic coils 10 are part of a holding device 7 with which an armature 22 can be held in at least two different positions without energy having to be supplied from the outside. In particular, the holding device 7 has an electromagnet. The electromagnet holds the armature 22 in a first position until a current pulse on one of the magnet coils 10 switches the electromagnet and thus moves the armature 22 into a second position different from the first position. The electromagnet also holds the armature 22 in the second position until a current pulse on one of the magnet coils 10 switches the electromagnet over and moves the armature 22 into the first position. In the first position the sliding element 9 and thus the door are locked, in the second position the sliding element 9 is released. The energization of an electromagnet is sufficient to move the armature 22 into the positions. The magnetic coils 10 are thus redundant to one another.

Each control device 11 is set up to apply a current pulse to a magnetic coil 10 in order to release the door 2. For this purpose, each control device 11 is connected to a respective switch 16, with electrical energy being output via the switches 16 to a magnetic coil 10 assigned to the switch 16 in accordance with the specifications of the control devices 11. Through the switch 16, current can flow through the magnet coil 10 in different current directions. By applying electrical energy to the magnetic coils 10, the sliding element 9 is released. The locking arrangement 1 is thus based on an operating current principle.

By using the open-circuit principle, a reliable release must be guaranteed in the event that the trigger signal is received from the hazard detector 8. The locking arrangement 1 therefore has at least one measuring point 17 in each subsystem 25, in particular a separate measuring point 17 for each magnetic coil 10. At the measuring point 17 it is checked whether the switching signals assigned to the magnet coil 10 are implemented and / or whether there is an interruption in the circuit of the magnet coil 10. For this purpose, the measuring point 17 of a subsystem 25 is electrically connected to the control device 11 of the subsystem 25. If a fault in the magnetic coil 10 of the subsystem 25 is detected, for example an interruption in the circuit of the magnetic coil 10, there is no guarantee that an activation of the magnetic coil 10 will release the sliding element 9. Due to the presence of several subsystems 25 within the hold-open arrangement 1, however, there is a further magnetic coil 10, so that the door 2 can be released by activating the further magnetic coil 10. _{A current strength I 1 is} determined by means of the measuring point 17.

The control unit 11 checks whether the current I ₁ lies within a predetermined range of values. Furthermore, each subsystem has at least one intermediate energy store 15. The electrical energy required to operate the magnetic coils 10 is in each case stored in the intermediate energy store 15, with in particular an intermediate energy store 15 being assigned to each magnetic coil 10. The intermediate energy store 15 is electrically connected to the switch 16, so that the electrical energy that is stored in the intermediate energy store 15 can be delivered to the magnetic coil 10 via the switch 16.

Each subsystem 25 also has at least one voltage converter 14, the intermediate energy stores 15 being charged by a common energy storage unit 12 via the voltage converter 14, in particular each intermediate energy store 15 via its own voltage converter 14. Only for a better overview is in Figure 2 the energy storage unit 12 shown in three elements. The energy storage unit 12 is in particular a battery or an accumulator or a circuit made up of several batteries or accumulators. The locking arrangement 1 is thus independent of an external power supply, for example a house network.

Each subsystem 25 has at least one first voltage measuring point 13, the energy storage unit 12 being connected to the control devices 11 via the first voltage measuring point 13. A voltage failure and / or undervoltage in the energy storage unit 12 is detected by means of the first voltage measuring point 13. Should a voltage value U _{1 be} detected for the energy storage unit 12 by means of the first voltage measuring point 13 which is below a predetermined voltage value U _V1 and thus does not enable reliable charging of the energy buffer 15, one of the control devices 11 then controls the magnetic coil 10 in such a way that the sliding element 9 is released. This prevents the sliding element 9 from being held by the locking arrangement 1 and releasing it is no longer possible due to a failure of the energy storage unit 12.

In addition, the locking arrangement 1 advantageously has a display device 18 with which the state of each magnetic coil 10 and / or of the energy storage unit 12 can be displayed. For example, the display device 18 can output a warning if the voltage _{value U 1} determined by the first voltage measuring point 13 is below a threshold value U _s . The threshold value U _s is above the specified voltage value Uvi. Furthermore, a button 19 is preferably provided.

If, for example, the locking arrangement 1 has transferred the holding device 7 to the releasing state GZ in the event of a fire, the control devices 11 initially prevent the holding device 7 from being transferred again to the locking state SZ. The button 19 serves to enable the holding device 7 to be transferred again to the locking state SZ.

Finally, the locking arrangement 1 has a position sensor 23 which detects a position of the armature 22. The position sensor 23 is in particular a magnetic switch.

A second voltage measuring point 26 is also provided, which determines electrical voltage _{values U 2} for the intermediate energy store 15.

Capacitors 27 are provided between the energy storage unit 12 and the control devices in order to supply the respective control device 11 with electrical energy in the event of failure of the energy supply unit 12.

In the Figures 3 to 6 each method 30, 40, 50, 60 are shown, preferably all methods 30, 40, 50, 60 in the locking arrangement 1 according to the invention, in particular according to the Figures 1 and 2 , are integrated. The methods 30, 40, 50, 60 are preferably stored in the control devices 11. The locking arrangement 1 can in particular be designed by means of the control devices 11 to carry out the methods 30, 40, 50, 60.

In Figure 3 a method 30 is shown in which a voltage value U ₁ for the energy supply unit 12 is determined in a method step 31. In a second method step 32, the voltage value U _{1 is} compared with a predetermined voltage value U _V1 stored in the control device 11. If the voltage _{value U 1 is} less than the voltage value Uvi, which is shown in Figure 3 is represented by a “+”, then according to method step 33 the holding device 7 is transferred to the releasing state GZ. Without changing the energy storage unit 12, even by pressing the button 19, it is not possible to return the holding device 7 to the locking state SZ.

If the voltage _{value U 1 is} greater than or equal to the voltage _{value U V1} , but less than a threshold value U _s , which is checked in a method step 34 a warning W is issued in a method step 35. In those cases in which the voltage _{value U 1 is} greater than or equal to the voltage value U _V1 , the determination of the voltage _{value U 1} and the subsequent routine are repeated at regular first time intervals Δt _1.

In Figure 4 a method 40 is shown in which the magnetic coil 10 is to be energized for test purposes. For this purpose, the position of the armature 22 must first be determined in a method step 41 by the position sensor 23 and it must thereby be determined whether the holding device 7 is in the locking state SZ or in the releasing state GZ. Correspondingly, in a method step 42 in a test T, the magnetic coil 10 is energized by the switch 16 in such a way that the current flowing through the magnetic coil 10 has no effect on the state of the holding device 7. The test T is carried out for a predetermined discharge period Δt _2. During the test T, the current strength I _{1 is} measured at the measuring point 17 in a method step 43. In a method step 44, the control unit 11 checks whether the current intensity I _{1 is} in a value range I ₀ , I ₂ with I ₀ <I ₁ <I ₂ . If this is not the case, what is in Figure 4 is marked with a “-”, the holding device 7 is transferred to the releasing state GZ, which corresponds to method step 45.

The voltage value _{U 2} determined at the second voltage measuring point 26 is also determined before and after the discharge period Δt _{2 of} the test T and a voltage value difference, ie a voltage drop ΔU _{2, is calculated therefrom in a method step 46.} In a method step 47, it is then checked whether the voltage drop .DELTA.U _{2 is} greater than a maximum value .DELTA.U _V. If this is the case, what is in Figure 4 is marked with a “+”, the holding device 7 is transferred to the releasing state GZ according to method step 45. This prevents the holding device 7 from having to be transferred to the releasing state GZ in the event of a fire in the case of an energy buffer 15 that has aged and can only store a small amount of electrical energy.

If the current I ₁ lies in a value range I ₀ , I ₂ , which is shown in Figure 4 is shown with a “+” and _{if the voltage drop ΔU 2 is} less than a maximum value ΔU _V , then the method 40 is started again only in a second predetermined time interval Δt _3.

In Figure 5 Another method 50 is shown. In order to have enough electrical energy available in the energy buffer 15, according to method step 51, the energy buffer 15 is determined at predetermined third time intervals Δt ₅ within a voltage value U ₂ for the energy buffer 15. In a method step 52, it is checked whether the determined voltage _{value U 2} falls _{below a setpoint voltage value U V2} by a predetermined amount B. If so, what is in Figure 5 is identified by a “+”, an attempt is made to recharge the intermediate energy store 15 in accordance with method step 53. If this is not the case, what is in Figure 5 is identified by a "-", a renewed determination of U _{2 is} carried out _{at the predetermined third time interval Δt 5.} In the case of charging, a method step 54 checks whether time t (U ₂ = U _V2 ) for charging the intermediate energy store 15 to the target voltage value U _{V2 occurs} within a predetermined charging time period Δt ₄ . The charging time period Δt _{4 here has} both an upper and a lower limit value in the range of seconds. I. E. the charging can be done too slowly z. B. because the voltage converter 14 is defective or too fast, e.g. B. because the energy buffer 15 has too little capacity. If the charging does not take place in the charging period Δt ₄ , which is shown in Figure 5 is marked with "-", the holding device 7 is transferred to the releasing state GZ in a method step 55. Otherwise, the routine is repeated at the predetermined third time intervals Δt _5.

In Figure 6 a method 60 is shown in which the control devices 11 monitor each other according to method step 61 and each monitor themselves according to the respective method step 62. Here, in method step 61, it is also checked in each case whether the control devices 11 are leaving an energy-saving mode.

If a defect is found in one of the control devices 11 in method steps 61, 62, which is shown in FIG Figure 6 is represented by a “-”, the holding device 7 is transferred to the releasing state GZ according to method step 63 by the other control device 11. If no defect is found, method step 61 is repeated _{at monitoring time intervals Δt 6} and method step 62 is _{repeated at self-monitoring time intervals Δt 7.}

List of reference symbols

1

Hold-open assembly

2

door

3

Door operator

4th

Linkage

5

Slide rail

6th

Signal transmitter

7th

Holding device

8th

Hazard detector

9

Sliding element

10

Solenoid

11

Control device

12th

Energy storage unit

13th

first voltage measuring point

14th

Voltage converter

15th

Intermediate energy storage

16

counter

17th

Current measuring point

18th

Display device

19th

Button

20th

Data line

22nd

anchor

23

Position sensor

25th

Subsystem

26th

second voltage measuring point

27

capacitor

SZ

Detecting state

GZ

Releasing state

U1

voltage value measured at 13 for 12

UV1

specified voltage value

US

Threshold

U2

measured voltage value for 15

UV2

Target voltage value

B.

amount

t

Time to reach the target voltage value

I1

measured amperage

I0, I2

Limits of the range of values

W.

warning

T

test

ΔU2

Voltage drop for 15

ΔUV

Maximum value

Δt1

first specified time interval

Δt2

specified discharge period

Δt3

second predetermined time interval

Δt4

specified loading time

Δt5

third predetermined time interval

Δt6

Monitoring intervals

Δt7

Self-monitoring intervals

30th

procedure

31-35

Procedural steps

40

procedure

41-45

Procedural steps

50

Procedural steps

51-55

Procedural steps

60

procedure

61-63

Procedural steps

Claims (14)

1. A hold-open arrangement (1) for a door, with a retaining device (7) for holding the door open, in particular in an open position, wherein the retaining device (7) can be transferred into a releasing state (GZ) from a hold-open state (SZ) by supplying electric energy,

   wherein the hold-open arrangement (1) is formed to transfer the retaining device (7) from the hold-open state (SZ) into the releasing state (GZ) if a defect occurs in the intended supply of the retaining device (7) with electric power and optionally also if a specified voltage value (Uvi) for an energy accumulator unit (12), which serves as the supply of electric energy for the retaining device (7), is undercut,

   wherein the retaining device (7) has an electric flow-through component (10), in particular a magnetic coil, and by means of the electric flow-through component the releasing state is achieved, characterized in that the hold-open arrangement (1) has a measuring point (17) for determining an electrical amperage (I₁), which flows through the electric flow-through component (10), wherein a defect is present in the intended supply of the retaining device (7) with electric current if the measured amperage (I₁) is outside of a specified value range (I₀, I₂), wherein to carry out a measurement which is carried out for test purposes, the electric flow-through component is energized with such a polarity that the energization has no effect on the state of the retaining device and wherein the determination of the amperage is carried out at specified time intervals.
2. The hold-open arrangement (1) according to claim 1,
   characterized in that the hold-open arrangement (1) has at least one intermediate energy accumulator (15) in which at least one amount of electric energy can be stored, by means of which the retaining device (7) can be transferred from the hold-open state (SZ) into the releasing state (GZ).
3. The hold-open arrangement (1) according to claim 1 or 2,
   characterized in that a first voltage measuring point (13) is provided for determining a voltage value (U₁) characterizing the electric voltage of the energy accumulator unit (12), wherein the retaining device (7) is transferred into the releasing state in the case of a voltage value (U₁) below the specified voltage value (U_V1) determined by the first voltage measuring point (13).
4. The hold-open arrangement (1) according to one of the preceding claims,
   characterized in that the energy accumulator unit (12) has at least one electrochemical energy accumulator, wherein the electrochemical energy accumulator has at least one ratio V1 of the nominal voltage to a recommended maximum permanent current of 10 Ω ≤ V1 ≤ 40 Ω, preferably 15 Ω ≤ V1 ≤ 30 Ω and/or a ratio V2 of the nominal voltage to a maximum pulsed discharge current of 20 Ω ≤ V2 ≤ 100 Ω, preferably 30 Ω ≤ V2 ≤ 70 Ω and/or a fuse is provided in the energy accumulator unit (12).
5. The hold-open arrangement (1) according to one of the preceding claims,
   characterized in that the electric flow-through component (10) is a magnetic coil.
6. The hold-open arrangement (1) according to one of the preceding claims,
   characterized in that a second voltage measuring point (26) is provided for determining a voltage value (U2) characterizing the electric voltage of the intermediate energy accumulator (15).
7. The hold-open arrangement (1) according to one of the preceding claims,
   characterized in that additionally a defect is present in the intended supply of the retaining device (7) with electric power, if a recharging of the intermediate energy accumulator (15) to a nominal voltage value (U_V2) fails within a specified charging time period (Δt₄).
8. The hold-open arrangement (1) according to one of the preceding claims,
   characterized in that additionally a defect is present in the intended supply of the retaining device (7) with electric power, if a voltage drop (ΔU₂) determined at the second voltage measuring point during a discharge of the intermediate energy accumulator (15) for a specified discharge time period (Δt₂) is greater than a specified maximum value (ΔU_V).
9. The hold-open arrangement (1) according to one of the preceding claims, characterized in that it has at least two intermediate energy accumulators (15) redundant with regard to each other and/or at least two electric flow-through components (10) redundant with regard to each other.
10. The hold-open arrangement (1) according to one of the preceding claims,
    characterized in that the hold-open arrangement (1) has at least two control devices (11) which monitor one another, wherein additionally a defect is present in the intended supply of the retaining device (7) with electric power, if a control device (11) is defective.
11. The hold-open arrangement (1) according to one of the preceding claims,
    characterized in that additionally a defect is present in the intended supply of the retaining device (7) with electric power, if the control device (1) fails to leave an energy saving mode.
12. The hold-open arrangement (1) according to one of the preceding claims,
    characterized in that a button (19) is provided in order, after transferring into the releasing position (GZ), in particular after receiving a trigger signal of a hazard detector and/or a change in the energy accumulator unit (12), to enable a re-arrangement of the retaining device (7) in the hold-open state (SZ).
13. The hold-open arrangement (1) according to one of the preceding claims,
    characterized in that after the specified voltage value (U_V1) is undercut and/or the specified maximum value (ΔU_V) is exceeded, the retaining device (7) remains in the releasing state (GZ), wherein in particular upon actuation of the button (19) a transfer into the hold-open state (SZ) is prevented.
14. A method (30, 40, 50, 60) for operating a hold-open arrangement (1), wherein the hold-open arrangement comprises a retaining device (7) for holding a door (2) open, in particular in an open position, wherein the retaining device (7) is transferred into a releasing state (GZ) from a hold-open state (SZ) by supplying electric energy, wherein the retaining device (7) is transferred from the hold-open state (SZ) into the releasing state (GZ) if a defect occurs in the intended supply of the retaining device (7) with electric power and optionally also if a specified voltage value (U_V1) for an energy accumulator unit (12), which serves as the supply of the retaining device (7) with electric power, is undercut, wherein the retaining device (7) has an electric flow-through component (10), in particular a magnetic coil, and by means of the electric flow-through component the releasing state is achieved, characterized in that the hold-open arrangement (1) has a measuring point (17) for determining an electrical amperage (I₁), which flows through the electric flow-through component (10), wherein a defect is present in the intended supply of the retaining device (7) with electric power if the measured amperage (I₁) is outside of a specified value range (I₀, I₂), wherein to carry out a measurement, which is carried out for test purposes, the electric flow-through component is energized with such a polarity that the energization has no effect on the state of the retaining device, wherein the determination of the amperage is carried out at specified time intervals.

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