EP3064689B1 - Hold-open 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 is transferred under supply of electrical energy from a determining state to a releasing state, according to the preamble of claim 1. Further The invention relates to a method for operating a locking arrangement.

Locking arrangements are widely used in building services engineering for door and gate systems, which are equipped with fire barriers in accordance with the applicable regulations. The locking arrangement allows a door equipped with a mounted door closer to be kept open either at a fixed or selected angle until it is electrically triggered. In previously known solutions, the individual components of the locking arrangement are connected to the building power network for power supply. In particular, when retrofitting or expanding existing buildings is a great effort by wiring with the building electricity network. In order to make the wiring optically acceptable, it may be necessary to pry up the walls and ceilings so that the cables can be laid "under plaster". In the case of historic building substances, this sometimes causes considerable damage through the retrofitting with locking arrangements for fire doors.

The WO92 / 04519 A1 discloses a locking arrangement in which, with the supply of energy, the locking arrangement is transferred to the releasing state. The energy is provided by a battery. The locking arrangement is transferred when falling below a battery voltage and when removing the battery in the releasing state.

The invention has for its object to provide a locking arrangement and a method for operating a locking arrangement, which avoids the aforementioned disadvantage, in particular to provide a locking arrangement and methods that are easy to install.

The object is solved by the independent claim 1. Advantageous developments of the locking arrangement are given in the dependent device claims, the description and in the figures. Furthermore, the invention is also solved by the features of the independent method claim according to independent claim 11. Advantageous developments of the method are given in the description and in the figures. Features and details 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, the locking arrangement is designed to transfer the retaining device from the locking state into the releasing state if a defect occurs in the intended supply of the retaining device with electric current and / or a predetermined voltage value for an energy storage unit which is responsible for the supply is used by electrical energy for the holding device, is exceeded.

In the locking arrangement according to the invention, the working current principle is realized. It is provided that the locking arrangement is designed to transfer by supplying electrical energy, the holding device of a detecting state in a releasing state. In particular, it is possible that the holding device can be in the ascertaining and / or releasing state without the supply of electrical energy. This enables energy-saving operation of the locking arrangement. Due to the energy-saving operation, it is possible to dispense with a wiring to the building electricity network and thus provide a mounting-friendly Feststellanordnung. Under the determining state of the holding device is understood in particular a state that is for detecting the door is used by the holding device. Under the releasing state is understood in particular a state in which the holding device has released the door, so that the door is movable, in particular closable, is. In the releasing state, in particular, a door operator, in addition to the locking arrangement, is allowed to close the door from the previously held position. The transfer of the holding device from the determining to the releasing state thus serves in particular for releasing the door. Optionally, it can be provided that by supplying electrical energy, the holding device can be transferred from the releasing state into the ascertaining state.

Due to the inventive design of the locking arrangement, the holding device is always transferred to the releasing state when a transfer at a later date, especially in a fire, can no longer be guaranteed safe. In particular, the transfer to the releasing state always takes place when only the energy for a predetermined number of transfers, in particular for transfer, is reliably available and / or when the initiation of the transfer into the releasing state is no longer reliably ensured. A defect in the intended supply of the holding device with electric current is therefore also to be understood as defects which relate to the control of the transfer.

By locking arrangement according to the invention a high reliability of the release is achieved, so that the door in case of danger, especially a fire, is released safely and reliably. The locking device is particularly preferably battery operated and thus independent of an external power supply. The locking arrangement is in particular free of an electrical connection to a building electricity network.

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

The locking arrangement preferably comprises a danger detector, in particular a fire and / or smoke detector. The danger detector can, in particular in the case of a fire, transmit a triggering signal to a control device of the locking arrangement. Thereafter, the control device controls the holding device, so that the holding device is transferred from the determining to the releasing state.

The locking arrangement may comprise a sliding element in a slide rail. Preferably, by the holding device, the sliding element can be detected and / or released within a slide rail. That is, in a transfer of the holding device from the locking to the releasing state, the sliding element is released, so that the sliding element is movable in the slide rail. The sliding element can be connected to the door. In the locking state, the sliding element is fixed in the slide by the holding device. Preferably, the holding device, in particular a holding mechanism of the holding device, blocks the sliding element in the slide rail in the locking state. In the releasing state, the sliding element is movably arranged in the slide rail, so that the door is also movable. Such a holding device is in the DE 10 2010 061 246 A1 disclosed. In particular, the energy storage unit, the slide, the danger detector, the holding device and the control device for arranging on a frame of the door may be provided. Particularly preferably, the energy storage unit, the slide rail, the danger detector, the holding device and the control device are arranged in a common housing.

In particular, the holding device is designed to determine the door in the open position. Accordingly, the locking arrangement is preferably designed to transmit the holding device in the releasing state when the trigger signal is emitted, so that the door can be closed.

According to the invention, the locking arrangement has at least one energy buffer, which is designed in particular as at least one capacitor element, in which an amount of electrical energy can be stored, by which the holding device can be transferred from the ascertaining state into the releasing state. In particular, the sliding element can be released by the amount of energy. Characterized in that an energy buffer is provided, even in the case of a defect of the energy storage unit or an electrical connection line of the energy storage unit, the holding device can be transferred to the releasing state at least once. The installation of the intermediate energy store can thus contribute to the reliability of the locking arrangement operating on the working current principle. In addition, it may be that only the intermediate energy storage can provide a sufficient current for the solenoid. The recommended maximum continuous current of an energy storage of the energy storage unit, however, z. 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 energy buffer is in particular electrically connected between the energy storage unit and the holding device. Particularly preferably, the amount of energy of the energy storage unit can be supplied only via the energy buffer of the holding device. The Energy buffer can be rechargeable in particular only from the energy storage unit.

The control device, in particular a microcontroller, can in particular be designed to initiate that the holding device is transferred from the determining to the releasing state if a defect occurs in the intended supply of the holding device with electric current and / or the predetermined voltage value is undershot , In this case, the control device can in particular detect the defect and / or the undershooting of the predetermined voltage value.

According to the invention, a first voltage measuring point is provided for determining a voltage value characterizing the electrical voltage of the energy storage unit. At a voltage value determined by the first voltage measuring point below the predetermined 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 may in particular be a voltage value that can be determined at the first voltage measuring point and that characterizes the predefined voltage of the energy storage unit. The voltage measurement can be carried out at 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 z. B. a voltage divider may be provided. Alternatively or additionally, the first voltage measuring point may have a voltmeter which transmits the determined voltage value to the control unit. The control unit compares the determined with the predetermined voltage value and can optionally transfer the holding device in 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, in which case a Warning is issued. As a warning, for example, a lighting element of the locking arrangement can shine. Here, the light element z. B. flashing. The warning informs an operator that the energy storage unit is about to be replaced.

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 may 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. As a result, a critical heating of the energy storage is excluded. Additionally or alternatively, a fuse may be provided in the energy storage unit. In this way, it is thus possible to contribute to the reliability of the locking arrangement operating on the working current principle.

A defect in the intended supply of the holding device with electrical current is preferably present when there is a short circuit and / or an interruption within the energy storage unit and / or in the connection line of the energy storage unit. Thus, the holding device is transferred from the determining to the releasing state. In this case, the energy buffer store can provide the electrical energy. The short circuit or the interruption can be effected by the voltage value determined at the first voltage measuring point, which is below the predetermined voltage value.

It can be provided that the holding device has an electrically flowable component. With the help of the electrically flowable component of the releasing state can be achieved. The electrically flowable component can, for. B. may be formed as a magnetic coil. By the component is an element of the holding device, for. B. an anchor, movable, through which the transfer takes place in the releasing state. For example, in this case a blockage of a holding mechanism of Holding device to be repealed. The component can be part of an actuator, z. As an electromagnet or an electric motor to be. The component which can flow through electrically can be flowed through in particular with electric current with different current directions. The magnetic fields generated thereby can move the element between two positions corresponding to the detecting state and the releasing state. This is again on the DE 10 2010 061 246 A1 directed.

The locking arrangement can have a measuring point for determining an electrical current flowing through the component which can flow electrically, wherein there is a defect in the intended supply of the holding device with electric current if the determined current strength is outside a predetermined value range. The control device can determine the current intensity. In this case, a resistor may be provided at the measuring point. In particular, the current intensity is determined via a measurement of a voltage applied to the resistor. Alternatively or additionally, 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 strength is within the predetermined value range and, if not, allows the holding device to be released. An upper limit of the value range may, for. B. serve to detect a short circuit. A lower limit of the value range can, for. B. serve to determine if there is an interruption of the circuit and / or if there is a sufficient current to generate a sufficient magnetic field for the transfer of the holding device in the releasing state.

The determination of the current intensity can be carried out at second predetermined time intervals. Thus, the determination of the current can be carried out only for test purposes. Therefore, the determination of the current can also take place when no transfer to the releasing or the determining state should take place. The second predetermined time intervals can be stored in the control device. The second predetermined time intervals can be identical in particular. For example, such a measurement may be performed every twenty four hours. So that the current flow through the component which can flow through electrically does not lead to a release into the releasing state, it can be provided that the electrically flowable component is energized with such a polarity to carry out the measurement, which is carried out for testing purposes, that the current supply is ineffective on the state of the holding device is. Additionally or alternatively, the current intensity is determined at a triggered by the trigger signal transfer to the releasing state.

The energy storage unit can be connected via a voltage converter to the energy buffer. Via the voltage converter, a higher electrical voltage can be generated in the energy buffer than in the energy storage unit. In particular, via the voltage converter, the control device can cause a charging of the energy buffer.

According to the invention, 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 electrically connected 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 may perform the voltage measurement at the second voltage measurement point. In this case, a voltage divider may 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 intermediate energy storage device, which was determined at the second voltage measurement point, is preferably compared with a nominal voltage value. If the voltage value falls below the setpoint voltage value by a predetermined amount, in particular the control device causes the energy buffer to be charged to the setpoint voltage value. The nominal voltage value can be stored in the control unit. The predetermined time intervals can be identical in particular. This ensures that the energy buffer has stored a sufficient amount of energy to transfer the holding device in the releasing state and has not over-discharged over time.

Preferably, there is a defect in the intended supply of the holding device with electric current, if a charging of the intermediate energy storage fails to a target voltage value within a predetermined charging period. For this purpose, in particular, the control unit can check whether the energy buffer reaches the target voltage value within the predetermined charging period. If the target 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. Also, the energy buffer may be aged and have a small capacity, so that the charge on the target voltage value is too fast.

The predefined charging time interval Δt ₄ can thus be limited by an upper limit value t _above and a lower limit value t _below greater than zero. In this case, t can be selected _below and t _above depending on the amount to be undershot and the capacitance of the capacitor element. As a value, t _below z. B. between 0.1 s and 10 s, preferably between 1 s and 4 s. As a value, t can be stored at the _{top of} z. B. between 10 s and 60 s, preferably between 5 s and 30 s be selected. For example, the charging period Δt ₄ may be given by 0.1 s = t _down ≤ Δt ₄ ≤ 60 s = t _above or 1 s = t _down ≤ Δt ₄ ≤ 30 s = t _above or 3 s = t _down ≤ Δt ₄ ≤ 16 s = t _above . In particular, by the lower limit t _below an aging of the energy buffer, z. B. by 10% to 50%, preferably by 20% to 40%, taken into account.

It is conceivable that there is a defect in the intended supply of the holding device with electrical energy, if a voltage drop determined at the second voltage measuring point is greater than a predefined maximum value for a discharge of the intermediate energy storage device for a predetermined discharge period. Due to aging of the energy buffer, the energy buffer can lose capacity. It is also conceivable that the energy buffer has different capacities at different temperatures. At a lower capacity, however, a smaller amount of charge is stored in the intermediate energy storage at a given voltage. In order to prevent the stored amount of charge from being insufficient for a transfer of the holding device into the releasing state, the voltage drop is checked during a discharge of the energy buffer for the predetermined discharge period, which is an indicator for the stored charge quantity and thus for 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 for determining the voltage drop in the discharge period by carrying out the test described above, in which the component which can flow through electrically is energized with such a polarity that the current supply is ineffective on the state of the holder. Thus, both the current flow through the electrically flowable component and the capacity of the energy buffer can be overhauled in one operation.

It may be that the locking arrangement has at least two mutually redundant energy buffers and / or at least two mutually redundant electrically flowable components. Thus, in case of a defect of an energy buffer or an electrically flowable component, the transfer of the holding device can be reliably effected in the releasing position. This makes it possible that in a serious defect of the intermediate energy storage and / or the electrically flowable component by the redundant energy buffer and / or the redundant electrically flowable component, the holding device can still be transferred to the releasing state. The serious defect can z. B. be a short circuit in the energy buffer. Each electrically flowable component is designed such that without the help of further electrically flowable component of the releasing state can be brought about.

Preferably, at least two subsystems are provided, each comprising at least one energy buffer and an electrically flowable component, wherein the subsystems are each configured independently of each other. The subsystems are in particular redundant to each other.

It can be provided that the locking arrangement has at least two control devices which monitor each other, wherein there is a defect in the intended supply of the holding device with electric current, if a control device is faulty. For example, in the absence of a cyclic trigger signal, one of the control devices can detect a defect in the other control device and cause the transfer of the holding device in the releasing state. The control devices can monitor at predetermined monitoring intervals, which are stored in particular in the control devices. Furthermore, it can be provided that the control devices monitor themselves. For this example, CPU and RAM test can be performed. In particular, self-monitoring is performed at regular, predetermined self-monitoring intervals. Is activated during monitoring Error, z. B. detected in the CPU or RAM test, a defect in the provided supply of the holding device is detected with electric current and transferred the holding device in particular by the further intact control device in the releasing state.

The at least two control devices can each be part of a subsystem. Thus, each subsystem may range from receiving a trigger signal to the electrically flowable component of the fixture. Here, by each of the subsystems, the holding device can be transferred independently of the other subsystem in the releasing state.

Preferably, there is a defect in the intended supply of the holding device with electric current when leaving a power saving mode of the control device is missing. In a period in which the control device does not need to monitor and transfer to the releasing state, the control device may be in a power saving mode. If the control device can not leave the energy saving mode, then the holding device is transferred to the releasing state. This defect can be detected in particular by another control device.

It is conceivable that a push-button is provided in order to allow a re-arrangement of the holding device in the determining state after a transfer to the releasing state, in particular after receiving a fire alarm signal and / or a change of the energy storage unit. It may also be that after remedying a defect, in particular a short circuit z. B. in the energy buffer or in the energy storage unit, by pressing the button and a self-test re-transfer to the determining state may be possible. Alternatively it can be provided that upon actuation of the button only in a renewed transfer of the holding device in the ascertaining state is possible if a fire alarm signal was received and / or if a cyclic danger detector signal is missing 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 an der Messstelle ermittelten Stromstärke außerhalb des vorgegebenen Wertebereichs,
• bei einer Aufladung des Energiezwischenspeichers auf eine Sollladespannung außerhalb der vorgegebenen Ladezeitspanne,
• bei einer defekten Steuervorrichtung.

It is preferably provided that after a certain defect and / or after falling below the predetermined voltage value before changing the energy storage unit, the holding device remains in the releasing state. Ie. an attempt to re-establish the door in the open position fails. In this case, a renewed transfer of the holding device into the ascertaining 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, which causes the determining state, be prevented. A defect in which the holding device remains in the releasing state may be at least one of the following defects:

• In the event of a short circuit in the connecting line of the energy storage unit and / or in the energy buffer store in the event of damage, further components. In this case, the damage can be determined by a self-test,
• At the voltage drop determined at the second voltage measuring point during a discharge of the intermediate energy storage device for a predefined discharge time period that is greater than a predefined maximum value,
• If the voltage value for the energy storage unit determined at the first voltage measuring point falls below the predetermined voltage value before a change of the energy storage unit,
• at a current at the measuring point outside the specified value range,
• when charging the energy buffer to a desired charging voltage outside the predetermined charging period,
• with a defective control device.

It may be that a capacitor is provided to the case of failure of the power supply unit, the control device with electrical energy supply. In the case of redundant control devices, in particular each control device is assigned a capacitor. 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 may be a voltage value of the energy storage unit, in which only once the holding device secured in the releasing state can be transferred. Additionally or alternatively, the predetermined voltage value U _V1 as a function of the nominal voltage U _{N of} the energy storage unit as a value from an interval 0.5 * U _N ≤U _V1 ≤ 0.9 * U _N , preferably 0.65 * U _N ≤ U _V1 ≦ 0.9 * U _N , more preferably 0.75 * U _N ≦ U _V1 ≦ 0.85 * U _N , be predetermined. For example, the predetermined voltage value U _{V1 may be} a value between 5V and 6.5V, preferably between 5.5V and 6.3V.

The threshold value U _S is above the predetermined voltage value U _V1 . In this case, in addition, the threshold value can 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 U _{S may be} a value between 6 V and 7.0 V, preferably between 6.5 V and 6.9 V.

The target voltage value U _V2 is to be selected such that, depending on the capacitance of the capacitor element used, the charge amount for transferring the holding device into the releasing state is sufficient. Preferably, the charge amount suffices for an n-fold transfer to the releasing state, wherein n is selected from the range 2 ≦ n ≦ 4, preferably 2 ≦ n ≦ 10. For example, U _V2 may be a value from a range of 8V ≦ U _V2 ≦ 16V, preferably 10V ≦ U _V2 ≦ 14V.

The amount B by which the voltage value U ₂ determined at the second voltage measuring point may fall below the nominal 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 become. Additionally or alternatively, the amount B may 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 may be chosen as a value between 0.5V and 1.5V.

The maximum value .DELTA.U _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. Accordingly, the maximum value ΔU _V may correspond to a value of 1.1 to 2 times, preferably 1.25 to 1.7 times, the voltage drop of the non-aged capacitor element for the predetermined discharging period. For example, the maximum value ΔU _{V may be} a value between 0.3 V and 1 V.

The lower limit I ₀ and the upper limit I ₂ for the current I _magnet are of the current required and / or preferred for the electrically flowable component, in particular the magnetic coil, z. B. of the rated current, depending. The lower limit I ₀ can z. 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 in the releasing state. The upper limit I ₂ can z. B. be chosen so that above the upper limit I _{2 is} a short-circuit current. For example, the lower limit I ₀ as 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 selected. For example, the upper limit I ₂ as a value of 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 selected. By way of example only, the lower limit I _{0 may be selected} as a value from the interval 300 mA ≦ I ₀ ≦ 575 mA, preferably 350 mA ≦ I ₀ ≦ 550 mA, more preferably 400 mA ≦ I ₀ ≦ 500 mA. The upper limit I _{2 should 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 current intensities are required for the magnet coil of each subsystem.

The predetermined discharge time _{.DELTA.t.sub.2} can be a very less amount of time to avoid unnecessary discharge of the energy storage unit. For example, the predetermined discharge time 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 may 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 predefined time interval Δt ₁ , the third predetermined time interval Δt ₅ , the monitoring and / or the self-monitoring time interval Δt ₆ , Δt ₇ may 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 may be} 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, wherein the locking arrangement comprises a holding device for locking a door, in particular in an open position, wherein the holding device transferred by supplying electrical energy from a determining state to a releasing state becomes. According to the method of the invention, the holding device is transferred from the determining state to the releasing state if a defect occurs in the intended supply of the holding device with electric current and / or a predetermined voltage value for an energy storage unit which serves to supply the holding device with electrical energy, is fallen short of.

The defect may in particular be a defect as described above.

Fig. 1

eine erfindungsgemäße Feststellanordnung gemäß einem Ausführungsbeispiel,

Fig. 2

ein schematisches Schaltbild der erfindungsgemäßen Feststellanordnung gemäß dem Ausführungsbeispiel,

Fig. 3

ein erstes Ausführungsbeispiel eines erfindungsgemäßen Verfahrens, das in einer erfindungsgemäßen Feststellanordnung hinterlegt ist,

Fig. 4

ein zweites Ausführungsbeispiel eines erfindungsgemäßen Verfahrens, das in einer erfindungsgemäßen Feststellanordnung hinterlegt ist,

Fig. 5

ein drittes Ausführungsbeispiel eines erfindungsgemäßen Verfahrens, das in einer erfindungsgemäßen Feststellanordnung hinterlegt ist und

Fig. 6

ein viertes Ausführungsbeispiel eines erfindungsgemäßen Verfahrens, das in einer erfindungsgemäßen Feststellanordnung hinterlegt ist.

In the following the invention will be shown with reference to an 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 diagram of the locking arrangement according to the invention according to the embodiment,

Fig. 3

A first embodiment of a method according to the invention, which is stored in a locking arrangement according to the invention,

Fig. 4

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

Fig. 5

A third embodiment of a method according to the invention, which is deposited in a Feststellanordnung invention and

Fig. 6

A fourth embodiment of a method according to the invention, which is stored in a Feststellanordnung invention.

Fig. 1 shows a locking assembly 1 according to the embodiment. Shown is a door 2. At this door 2, in addition to the locking assembly 1, a door operator 3, designed as a door closer, mounted. In the door operator 3, a closing spring is integrated. The force of the closing spring is transmitted from the closing spring via a linkage 4 to a sliding element 9. The sliding element 9 is guided in a slide rail 5 of the fixing arrangement 1 mounted on the side of the fall.

Furthermore, the locking arrangement 1 comprises a danger detector 8. This is designed as a smoke detector and / or fire alarm. The danger detector 8 is connected to further signal transmitters 6, in particular further danger detectors (cf. FIG. 2 ) connectable, the signal generator 6 are mounted in particular on the ceiling. Another component of the Locking arrangement 1 is a holding device 7, with which the sliding element 9 can be detected. Here, the holding device 7 is in the ascertaining state SZ. By fixing the sliding element 9, the door 2 is preserved in the open position. A control of the holding device 7 is carried out by and within two subsystems 25, their structure and function below with reference to FIG. 2 is described. The holding device 7 is controlled by the subsystems 25 in such a way that the sliding element 9 is detected, in particular, until the danger detector 8 emits a triggering signal to the subsystems 25.

In the case of smoke or fire, this is detected by the hazard detector 8 and / or by the external signalers 6. The external signal generator 6 are coupled via radio to the danger detector 8. 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, whereby the holding device 7 releases the sliding member 9, wherein the holding device is transferred to the releasing state GZ. Thus, the energy pre-stored in the closing springs of the door operator 3 can close the door leaves of the door 2.

FIG. 2 shows a schematic diagram of the Feststellanordnung 1. In the in FIG. 2 shown embodiment, two signal generator 6 are present, which communicate with the danger detector 8 via a radio link. The signal generator 6 are thus able to transmit a signal to the danger detector 8 when the signal transmitter 6 smoke or detect a fire. Likewise, the danger detector 8 is designed to detect a fire.

In addition, the locking assembly 1 has two subsystems 25, wherein the danger detector 8 is connected to the subsystems 25. In this case, the danger 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 each other via a data line 20 for data exchange, so that a mutual monitoring of the control devices 11 is realized. This allows the detection of defects within one subsystem 25 by the other subsystem 25. Thus, redundancy is provided within the detent assembly 1.

The control devices 11 are set up to control magnetic coils 10. Each subsystem 25 has at least one magnetic coil 10, so that each magnetic 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 is durable in at least two different positions, without having to be supplied from the outside energy. 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 magnetic coils 10 switches the electromagnet and thus converts the armature 22 into a second position different from the first position. Also, the electromagnet holds the armature 22 in the second position until a current pulse on one of the magnetic coils 10 switches the electromagnet and transfers the armature 22 to the first position. In the first position, the sliding element 9 and thus the door is detected, in the second position, the sliding element 9 is released. The energization of an electromagnet is sufficient to transfer the armature 22 in the positions. Thus, the magnetic coils 10 are redundant to each other.

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 in each case to a switch 16, electrical energy being output via the switches 16 in each case according to the specifications of the control devices 11 to a magnetic coil 10 assigned to the switch 16. Through the switch 16 can flow through the current through the solenoid 10 in different directions. By applying the magnetic coils 10 with electrical energy, the sliding element 9 is released. Thus, the locking assembly 1 is based on a working flow principle.

By using the working current principle, a reliable release in the event of receiving the triggering signal from the hazard detector 8 must be ensured. Therefore, the locking arrangement 1 in each subsystem 25 at least one measuring point 17, in particular for each magnetic coil 10 has its own measuring point 17 on. At the measuring point 17 it is checked whether the magnetic coil 10 assigned switching signals are implemented and / or if there is an interruption of the circuit of the magnetic 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 of the solenoid 10 of the subsystem 25 are detected, for example, an interruption in the circuit of the solenoid 10, so it is not guaranteed that a driving the solenoid 10, the slider 9 releases. Due to the presence of several subsystems 25 within the locking arrangement 1, however, a further magnetic coil 10 is present, so that the door 2 can be released by controlling the further magnetic coil 10. By means of the measuring point 17, a current intensity I ₁ can be determined. The control unit 11 checks whether the current intensity I _{1 is} within a predetermined value range.

Furthermore, each subsystem has at least one energy buffer 15. The electrical energy required for operating the magnetic coils 10 is stored in each case in the intermediate energy storage 15, wherein in particular each magnetic coil 10 is associated with an energy buffer 15. The energy buffer 15 is electrically connected to the switch 16, so that the electrical energy stored in the energy buffer 15 can be delivered via the switch 16 to the solenoid coil 10.

Each subsystem 25 also has at least one voltage converter 14, the intermediate energy storage devices 15 being charged via the voltage transformers 14, in particular each intermediate energy storage device 15, via a respective voltage converter 14, from a common energy storage unit 12. Only for a better overview is in FIG. 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 of several batteries or accumulators. Thus, the locking assembly 1 is independent of an external power supply, such as a home network.

Each subsystem 25 has at least one first voltage measuring point 13, wherein the energy storage unit 12 is connected to the control devices 11 via the first voltage measuring point 13. By means of the first voltage measuring point 13, a voltage failure and / or an undervoltage of the energy storage unit 12 is detected. If a voltage value U ₁ for the energy storage unit 12 is detected by means of the first voltage measuring point 13, which is below a predetermined voltage value U _V1 and thus does not allow a reliable charging of the energy buffer 15, then one of the control devices 11 then controls the magnetic coil 10 such that the sliding member 9 is released. Thus, it is prevented that the sliding member 9 is held by the locking assembly 1 and due to a failure of the energy storage unit 12, a release is no longer possible.

In addition, the locking arrangement 1 advantageously has a display device 18, with which the state of each magnetic coil 10 and / or the energy storage unit 12 can be displayed. For example, the display device 18 may issue 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 predetermined voltage value U _V1 . Furthermore, a push button 19 is preferably provided.

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

Also, a second voltage measuring point 26 is provided which determines electrical voltage values U ₂ for the energy buffer 15.

Between the energy storage unit 12 and the control devices capacitors 27 are provided in each case to supply the respective control device 11 with electrical energy in case of failure of the power supply unit 12.

In the FIGS. 3 to 6 In each case, methods 30, 40, 50, 60 are shown, wherein all methods 30, 40, 50, 60 in the locking arrangement 1 according to the invention, in particular according to FIGS FIGS. 1 and 2 , are integrated. The methods 30, 40, 50, 60 are preferably stored in the control devices 11. The locking arrangement 1 can be formed in particular by means of the control devices 11, the methods 30, 40, 50, 60 perform.

In FIG. 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 stored in the control device 11 predetermined voltage value U _V1 . If the voltage value U _{1 is} smaller than the voltage value U _V1 , which is in FIG. 3 is represented by a "+", then in accordance with method step 33, the holding device 7 is transferred to the releasing state GZ. Without a change of the energy storage unit 12, it is not possible even by pressing the button 19, the holding device 7 back to the ascertaining state SZ.

If the voltage value U _{1 is} greater than the voltage value U _V1 , but smaller than a threshold value U _s , which is checked in a method step 34 is, then a warning W is issued in a method step 35. In cases where 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 is repeated at regular first time intervals Δt ₁ .

In FIG. 4 a method 40 is shown, in which the magnetic coil 10 is to be energized test half. For this purpose, the position of the armature 22 must first be determined in a method step 41 by the position sensor 23 and thereby determined whether the holding device 7 is in the ascertaining state SZ or in the releasing state GZ. Accordingly, in a test step T 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 performed for a predetermined discharge period Δt ₂ . During the test T, the current intensity I ₁ at the measuring point 17 is measured in a method step 43. The control unit 11 checks in a method step 44 whether the current intensity I _{1 is} in a value range I ₀ , I ₂ with I ₀ <I ₁ <I ₂ . This is not the case, what is in FIG. 4 is marked with a "-", the holding device 7 is transferred to the releasing state GZ, which corresponds to the method step 45.

Also, the voltage value U ₂ determined at the second voltage measuring point 26 is determined before and after the discharge time period Δt _{2 of} the test T, and from this in a method step 46 a voltage value difference, ie a voltage drop ΔU _{2, is} calculated. Subsequently, it is checked in a method step 47 whether the voltage drop ΔU _{2 is} greater than a maximum value ΔU _V. Is this the case, what is in FIG. 4 is marked with a "+", the holding device 7 is transferred to the releasing state GZ in accordance with method step 45. This prevents that in the case of an energy buffer 15, which has aged and can store only a small amount of electrical energy, in case of fire, the holding device 7 must be transferred to the releasing state GZ.

If the current I ₁ lies in a value range I ₀ , I ₂ , which is in FIG. 4 is shown with a "+" and the voltage drop .DELTA.U _{2 is} smaller than a maximum value .DELTA.U _V , the method 40 is restarted only in a second predetermined time interval .DELTA.t ₃ .

In FIG. 5 another method 50 is shown. In order to have sufficient electrical energy in the energy buffer 15 available, the energy buffer 15 is determined according to the method step 51 at predetermined third time intervals .DELTA.t ₅ within a voltage value U ₂ for the intermediate energy storage 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 this is the case, what is in FIG. 5 is characterized by a "+", it is trying to recharge the intermediate energy storage 15 according to the method step 53. This is not the case, what is in FIG. 5 is characterized by a "-", a new determination of U _{2 is} performed in the predetermined third time interval .DELTA.t ₅ . In the case of a charge is checked in a step 54, whether time t (U ₂ = U _V2 ) for the charging of the intermediate energy storage 15 to the target voltage value U _V2 within a predetermined charging time .DELTA.t ₄ . Here, the charging period .DELTA.t _{4 has} both an upper and a lower limit in the second range. Ie. the charge can be too slow z. B. because the voltage converter 14 is defective or too fast, z. B. because the energy buffer 15 has too little capacity. Charging does not occur in the charging period Δt ₄ , which is in FIG. 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 in the predetermined third time intervals Δt ₅ .

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

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

LIST OF REFERENCE NUMBERS

1

Locking assembly

2

door

3

door actuators

4

linkage

5

slide

6

signaler

7

holder

8th

hazard detector

9

Slide

10

solenoid

11

control device

12

Energy storage unit

13

first voltage measuring point

14

DC converter

15

Storage of energy

16

counter

17

Current measuring point

18

display device

19

button

20

data line

22

anchor

23

position sensor

25

subsystem

26

second voltage measuring point

27

capacitor

SZ

Determining condition

GZ

Releasing condition

U ₁

voltage value measured at 13 for 12

U _V1

predetermined voltage value

U _S

threshold

U ₂

measured voltage value for 15

U _V2

Target voltage value

B

amount

t

Time to reach the set voltage value

I ₁

measured current

I ₀ , I ₂

Limits of the range of values

W

warning

T

test

ΔU ₂

Voltage drop for 15

ΔU _V

maximum value

Δt ₁

first predetermined time interval

Δt ₂

predetermined discharge period

Δt ₃

second predetermined time interval

Δt ₄

specified charging period

Δt ₅

third predetermined time interval

Δt ₆

Monitoring intervals

Δt ₇

Self-monitoring intervals

30

method

31-35

steps

40

method

41-45

steps

50

steps

51-55

steps

60

method

61-63

steps

Claims (11)

1. A hold-open arrangement (1) for a door,
   with a retaining device (7) for holding the door open, in particular in an open location, a control device (11) for controlling the retaining device (7) and an energy accumulating unit (12), wherein, while supplying electrical energy, the retaining device (7) is transferable from a hold-open condition (SZ) into a releasing condition (GZ), wherein
   the hold-open arrangement (1) is configured to transfer the retaining device (7) from the hold-open condition (SZ) into the releasing condition (GZ), if a defect in the intended supply with electric power of the retaining device (7) arises and/or a specified voltage value (U_V1) for the energy accumulating unit (12) falls short, which serves for supplying electrical energy for the retaining device (7),
   wherein a first voltage measuring location (13) for determining a voltage value (U₁) characterizing the electrical voltage of the energy accumulating unit (12) is provided, wherein, for a voltage value (U₁) determined by the voltage measuring location (13) to be below the specified voltage value (U_V1), the retaining device (7) is transferred into the releasing condition,
   characterized in that
   the hold-open arrangement (1) includes at least one auxiliary energy accumulator (15), in which at least an electrical energy quantity is storable, by means of which the retaining device (7) is transferable from the hold-open condition (SZ) into the releasing condition (GZ), such that also during a defect of the energy accumulating unit (12) or of an electrical connection line of the energy accumulating unit (12), the retaining device (7) may be transferred into the releasing condition at least one more time, wherein a second voltage measuring location (26) may be provided for determining a voltage value (U₂) characterizing the electrical voltage of the intermediate energy accumulator (15).
2. The hold-open arrangement (1) according to claim 1,
   characterized in that the energy accumulating unit (12) includes at least one electrochemical energy accumulator, wherein the electrochemical energy accumulator has a ratio V1 of the nominal voltage to a recommended maximum permanent current of 10 Ω ≤ V1 ≤ 40 Ω, preferably of 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 of 30 Ω ≤ V2 ≤ 70 Ω, and/or a fuse is provided in the energy accumulating unit (12).
3. The hold-open arrangement (1) according to any of the preceding claims,
   characterized in that retaining device (7) includes an electric flow through component (10), in particular a magnetic coil, wherein the hold-open arrangement (1) includes a measuring location (17) for determining an electric amperage (I₁), which flows through the electric flow through component (10), wherein a defect in a provided supply with electric current to the retaining device (7) is given, if the measured amperage (I₁) is outside a specified value range (I₀, I₁).
4. The hold-open arrangement (1) according to any of the preceding claims,
   characterized in that a defect in the intended supply with electric current to the retaining device (7) is given, if a recharging of the intermediate energy accumulator (15) to a nominal voltage value (U_V2) fails within the specified charging time period (Δt₄).
5. The hold-open arrangement (1) according to any of the preceding claims,
   characterized in that a defect in the intended supply with electrical current to the retaining device (7) is given, if a voltage drop (ΔU₂) determined at the second voltage measuring location during a discharge of the intermediate energy accumulator (15) for a specified discharge time period ((Δt₂) is larger than a specified maximum value (ΔU_V).
6. The hold-open arrangement (1) according to any of the preceding claims,
   characterized in that it includes at least two intermediate energy accumulators (15) redundant with regard to each other and/or at least two electrical flow through components (10).
7. The hold-open arrangement (1) according to any of the preceding claims,
   characterized in that the hold-open arrangement (1) includes at least two control devices (11), which mutually monitor each other, wherein a defect in the intended supply with electrical current to the retaining device (7) is given, if one control device (11) is defective.
8. The hold-open arrangement (1) according to any of the preceding claims,
   characterized in that a defect in the intended supply with electrical current to the retaining device (7) is given, if the control device (1) fails to leave an energy savings mode.
9. The hold-open arrangement (1) according to any of the preceding claims,
   characterized in that a button (19) is provided, in order for allowing, after a transfer into the releasing condition (GZ), in particular after a reception of a trigger signal of a hazard detector and/or or a change of the energy accumulating unit (12), for a re-arrangement of the retaining device (7) in the hold-open condition (SZ).
10. The hold-open arrangement (1) according to any of the preceding claims,
    characterized in that after the specified voltage value (U_V1) falls short and/or exceeds the specified maximum value (ΔU_V) the retaining device (7) remains in the releasing condition (GZ), wherein in particular upon actuation of the button (19) a transfer into the hold-open condition (SZ) is prevented.
11. A method (30, 40, 50, 60) for operating a hold-open arrangement (1) according to any of the claims 1 to 10, wherein the hold-open arrangement comprises the retaining device (7) for holding open a door (2), in particular in an open location,
    wherein the retaining device (7) is transferred from a hold-open condition (SZ) into a releasing condition (GZ) by supplying electrical energy, characterized in
    that the retaining device (7) is transferred from the hold-open condition (SZ) into the releasing condition (GZ), if a defect in the intended supply with electric power to the retaining device (7) arises and/or a specified voltage value (U_V1) for the energy accumulating unit (12) falls short, which serves for supplying electrical energy to the retaining device (7).

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