DE102015102924A1 - Locking arrangement for a door - Google Patents

Abstract

The invention relates to a locking arrangement (1) for a door,
with a holding device (7) for fixing the door, in particular in an open position,
wherein the holding device (7) with the supply of electrical energy from a determining state (SZ) in a releasing state (GZ) can be transferred.
According to the invention, the locking arrangement (1) is designed to transfer the retaining device (7) from the locking state (SZ) to the releasing state (GZ) if a defect in the intended supply of the retaining device (7) with electrical Current occurs and / or a predetermined voltage value (U _V1 ) for an energy storage unit (12), which serves for the supply of electrical energy for the holding device (7), is exceeded.

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 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 14. 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. The features mentioned in the description and in the claims may each be essential to the invention individually or in combination. In particular, a locking arrangement is provided with which the inventive method is executable, as well as a method that can be performed with the locking arrangement according to the invention.

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 state of the holding device is in particular a state understood, which serves to lock the door 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. Under a defect in the intended supply of the holding device with electric current Therefore, such defects are to be understood, 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 which is fully incorporated by reference.

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.

It is conceivable that 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 determining state to 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 intermediate energy storage device can in particular only be charged from the energy storage unit.

The control device, in particular a microcontroller, may 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 fallen short of. In this case, the control device can in particular detect the defect and / or the undershooting of the predetermined voltage value.

It may be that 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 predefined threshold value can be provided for a voltage value determined by the first voltage measuring point, at which 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 the holding device can be canceled. 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 referenced, to which reference is made in full.

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 whether a sufficient current for generating a sufficient magnetic field for transferring the holding device is present 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.

It may be that a second voltage measuring point is provided for determining a voltage value characterizing the electrical voltage of the energy buffer. 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 predetermined charging period of time .DELTA.t ₄ can thus by an upper limit and a lower limit t _above t _below be larger limited to 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 1s = t _down ≤ Δt ₄ ≤ 30 s = t _above or 3 s = t _down ≤ Δ t 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. If an error occurs during monitoring, eg. 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 case of a short circuit in the connection line of the energy storage unit and / or in the energy buffer in case of damage to other 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 predetermined discharge period which is greater than a predetermined 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,
• - in the case of a current determined at the measuring point outside the specified value range,
• When charging the energy buffer to a desired charging voltage outside the predetermined charging period,
• - at a defective control device.

It may be that a capacitor is provided in order to supply the control device with electrical energy in case of failure of the power supply unit. 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 , particularly preferably 0.75 × U _N ≦ U _V1 ≦ 0.85 × U _N. 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 , 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 discharge time 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 of 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 can be} 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.

In the following the invention will be shown with reference to an embodiment and explained in more detail in the figures. This shows:

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

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

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

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

5 a third method according to the invention, which is deposited in a locking arrangement according to the invention and

6 a fourth method according to the invention, which is deposited in a locking arrangement according to the invention.

1 shows a locking arrangement 1 according to the embodiment. Shown is a door 2 , At this door 2 is next to the locking arrangement 1 a door operator 3 , designed as 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 on a sliding element 9 , The sliding element 9 is in a side mounted slide rail 5 the locking arrangement 1 guided.

Furthermore, the locking arrangement comprises 1 a danger detector 8th , This is designed as a smoke detector and / or fire alarm. The danger detector 8th is with other signalers 6 , in particular further danger detectors (cf. 2 ) connectable, the signal generator 6 especially mounted on the ceiling. Another component of the locking arrangement 1 is a holding device 7 with which the sliding element 9 is detectable. This is the holding device 7 by doing determining state SZ. By fixing the sliding element 9 is the door 2 durable in the open position. A control of the holding device 7 is done by and within two subsystems 25 whose structure and function are described below with reference to 2 is described. The holding device 7 is from the subsystems 25 controlled such that the sliding element 9 especially as long as it is detected until the danger detector 8th a trigger signal to the subsystems 25 sending out.

In the case of smoke or fire, this is done by the hazard detector 8th and / or from the external signalers 6 detected. The external signal generator 6 are via radio to the danger detector 8th coupled. The danger detector 8th generates the trigger signal when a fire or smoke has been detected. This trigger signal is sent to the subsystems 25 forwarded, causing the holding device 7 the sliding element 9 releases, wherein the holding device is transferred to the releasing state GZ. Thus, in the closing springs of the door operator 3 pre-stored energy the door leaves the door 2 shut down.

2 shows a schematic diagram of the locking arrangement 1 , In the in 2 embodiment shown are two signal generators 6 present over a radio link with the hazard detector 8th communicate. The signalers 6 are thus able to send a signal to the hazard detector 8th to transmit when the signalers 6 Detect smoke or a fire. Likewise, the danger detector 8th trained to detect a fire.

In addition, the locking arrangement 1 two subsystems 25 on, with the danger detector 8th with the subsystems 25 connected is. Here is the danger detector 8th with two control devices 11 connected. The control devices 11 have an identical function. The control devices 11 are in particular microcontrollers. The control devices 11 are over a data line 20 connected to the data exchange, so that a mutual monitoring of the control devices 11 is realized. This allows the detection of defects within the one subsystem 25 through the other subsystem 25 , Thus, there is redundancy within the locking arrangement 1 given.

The control devices 11 are set up so magnetic coils 10 head for. Every subsystem 25 has at least one magnetic coil 10 on, so every solenoid 10 a subsystem 25 from the control device 11 of the subsystem 25 is controllable. The magnetic coils 10 are part of a holding device 7 with which an anchor 22 is durable in at least two different positions, without having to be supplied with energy from the outside. In particular, the holding device 7 an electromagnet on. The electromagnet holds the anchor 22 so long in a first position, until a current pulse on one of the solenoid coils 10 switches the solenoid and thus the armature 22 transferred to a different position from the first position second position. The electromagnet also holds the anchor 22 so long in the second position, until a current pulse on one of the solenoid coils 10 the electromagnet switches and the armature 22 transferred to the first position. In the first position is the sliding element 9 and thus the door is detected, in the second position is the sliding element 9 Approved. The energization of an electromagnet is sufficient to the armature 22 into the positions. Thus, the magnetic coils 10 redundant to each other.

Every control device 11 is set up, a magnetic coil 10 to apply a current pulse to the door 2 release. This is every control device 11 each with a switch 16 connected via the switch 16 electrical energy according to the specifications of the control devices 11 to a switch 16 associated magnetic coil 10 is delivered. Through the switch 16 can power the the solenoid coil 10 flow through in different directions. By applying the magnetic coils 10 with electrical energy becomes the sliding element 9 Approved. Thus, the locking arrangement is based 1 on a working current principle.

By using the working current principle, reliable release must be obtained in the event of receiving the triggering signal from the hazard detector 8th to be guaranteed. Therefore, the locking arrangement 1 in every subsystem 25 at least one measuring point 17 , in particular for each solenoid 10 a separate measuring point 17 , on. At the measuring point 17 It checks if the solenoid coil 10 assigned switching signals are implemented and / or if an interruption of the circuit of the solenoid 10 is present. This is the measuring point 17 a subsystem 25 with the control device 11 of the subsystem 25 electrically connected. Should be a fault of the solenoid 10 of the subsystem 25 be recognized, for example, a break in the circuit of the solenoid 10 , so it is not guaranteed that driving the solenoid 10 the sliding element 9 releases. Due to the presence of multiple subsystems 25 within the locking arrangement 1 However, it is another solenoid 10 present, leaving the door 2 by driving the other solenoid 10 is releasable. By means of the measuring point 17 a current I ₁ can be determined. The control unit 11 checks whether the current I _{1 is} within a predetermined value range.

Furthermore, each subsystem has at least one energy buffer 15 on. The for operating the magnetic coils 10 required electrical energy is in each case in the energy buffer 15 stored, in particular each solenoid 10 an energy cache 15 assigned. The energy cache 15 is electric with the switch 16 connected, so that the electrical energy stored in the energy buffer 15 is stored over the switch 16 to the solenoid 10 is deliverable.

Every subsystem 25 also has at least one voltage transformer 14 on, with the energy buffers 15 over the voltage transformers 14 , in particular any intermediate energy storage 15 each with its own voltage transformer 14 from a common energy storage unit 12 getting charged. Only for a better overview is in 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 arrangement 1 independent of an external power supply, such as a home network.

Every subsystem 25 has at least a first voltage measuring point 13 on, with the energy storage unit 12 over the first voltage measuring point 13 with the control devices 11 connected is. By means of the first voltage measuring point 13 is a voltage failure and / or an undervoltage of the energy storage unit 12 detected. Should a voltage value U ₁ for the energy storage unit 12 by means of the first voltage measuring point 13 be detected, which is below a predetermined voltage value U _V1 and thus a reliable charging of the energy buffer 15 not enabled, so controls one of the control devices 11 then the solenoid 10 such that the sliding element 9 is released. This prevents the sliding element 9 from the locking arrangement 1 is held and due to a failure of the energy storage unit 12 a release is no longer possible.

In addition, the locking arrangement 1 advantageously a display device 18 on, with which the state of each solenoid 10 and / or the energy storage unit 12 is representable. For example, the display device 18 issue a warning when passing through the first voltage measuring point 13 determined voltage value U _{1 is} below a threshold value U _s . The threshold value U _s is above the predetermined voltage value U _V1 . Furthermore, a push button is preferred 19 intended.

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

Finally, the locking arrangement 1 a position sensor 23 on, a position of the anchor 22 detected. The position sensor 23 is in particular a magnetic switch.

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

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

In the 3 to 6 are each inventive method 30 . 40 . 50 . 60 represented, wherein preferred all methods 30 . 40 . 50 . 60 in the locking arrangement according to the invention 1 , especially after the 1 and 2 , are integrated. The methods according to the invention are preferred 30 . 40 . 50 . 60 in the control devices 11 deposited. The locking arrangement 1 in particular by means of the control devices 11 be trained, the procedures 30 . 40 . 50 . 60 perform.

In 3 is a procedure 30 represented, in which in one process step 31 a voltage value U ₁ for the power supply unit 12 is determined. In a second process step 32 is the voltage value U ₁ with a in the control device 11 stored predetermined voltage value U _V1 compared. If the voltage value U _{1 is} smaller than the voltage value U _V1 , which is in 3 is represented by a "+", then according to method step 33 the holding device 7 transferred to the releasing state GZ. Without a change of the energy storage unit 12 it is itself by pressing the button 19 not possible, the holding device 7 again due 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 in one method step 34 is checked, so is in a procedural step 35 a warning W issued. 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 4 is a procedure 40 shown, in which the magnetic coil 10 for test purposes. For this purpose must first in a procedural step 41 through the position sensor 23 the position of the anchor 22 determined and thereby determined whether the holding device 7 is in the determining state SZ or in the releasing state GZ. Accordingly, in one process step 42 in a test T the solenoid 10 through the switch 16 be energized so that by the magnetic coil 10 flowing current ineffective on the state of the holding device 7 is. The test T is performed for a predetermined discharge period Δt ₂ . During the test T will be in one step 43 the current I ₁ at the measuring point 17 measured. The control unit 11 checked in a procedural 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 4 marked with a "-", the holding device 7 transferred to the releasing state GZ, what the process step 45 equivalent.

Also at the second voltage measuring point 26 determined voltage value U ₂ before and after the discharge time .DELTA.t _{2 of} the test T determined and therefrom in a process step 46 a voltage value difference, ie a voltage drop .DELTA.U ₂ calculated. Subsequently, in a process step 47 checks whether the voltage drop ΔU _{2 is} greater than a maximum value ΔU _V. Is this the case, what is in 4 is marked with a "+", then the holding device 7 in the releasing state GZ according to method step 45 transferred. This prevents that in the case of an energy buffer 15 , which is aged and can only store 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 4 is shown with a "+" and the voltage drop .DELTA.U _{2 is} smaller than a maximum value .DELTA.U _V , so only in a second predetermined time interval .DELTA.t _3, the method 40 restarted.

In 5 is another method according to the invention 50 shown. To get enough electrical energy in the energy buffer 15 to be available, according to the method step 51 the energy cache 15 at predetermined third time intervals Δt ₅ within a voltage value U ₂ for the intermediate energy storage 15 determined. In one process 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 5 is marked by a "+", then the energy buffer is tried 15 according to the method step 53 recharge. This is not the case, what is in 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 in one step 54 checks whether time t (U ₂ = U _V2 ) for the charging of the energy buffer 15 to the target voltage value U _V2 within a predetermined charging time .DELTA.t ₄ takes place. 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 of the voltage converter 14 is defective or too fast, z. B. because of the energy buffer 15 has too little capacity. Charging does not occur in the charging period Δt ₄ , which is in 5 is denoted by "-" is in a process step 55 the holding device 7 transferred to the releasing state GZ. Otherwise, the routine is repeated in the predetermined third time intervals Δt ₅ .

In 6 is a procedure 60 illustrated in which the control devices 11 each other according to the method step 61 and in each case according to the respective method step 62 monitor. This is in the process step 61 each also checks if the control devices 11 to exit energy-saving mode.

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

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

switch

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

at 13 measured voltage value 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

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102010061246 A1 [0011, 0021]

Claims (14)

Locking arrangement ( 1 ) for a door, with a holding device ( 7 ) for locking the door, in particular in an open position, wherein the holding device ( 7 ) can be converted under the supply of electrical energy from a determining state (SZ) to a releasing state (GZ), characterized in that the locking arrangement ( 1 ) is adapted to the holding device ( 7 ) from the determining state (SZ) to the releasing state (GZ), if a defect in the intended supply of the holding device (G) ( 7 ) occurs with electric current and / or a predetermined voltage value (U _V1 ) for an energy storage unit ( 12 ) used to supply electrical energy to the holding device ( 7 ), falls below. Locking arrangement ( 1 ) according to claim 1, characterized in that the locking arrangement ( 1 ) at least one energy buffer ( 15 ), in which at least one quantity of electrical energy can be stored, by which the holding device ( 7 ) can be transferred from the determining state (SZ) to the releasing state (GZ). Locking arrangement ( 1 ) according to claim 1 or 2, characterized in that a first voltage measuring point ( 13 ) for determining a voltage of the energy storage unit ( 12 ) characterizing voltage value (U ₁ ) is provided, wherein at one by the first voltage measuring point ( 13 ) determined voltage value (U ₁ ) below the predetermined voltage value (U _V1 ) the holding device ( 7 ) is transferred to the releasing state. Locking arrangement ( 1 ) according to one of the preceding claims, characterized in that the energy storage unit ( 12 ) has at least one electrochemical energy store, wherein the electrochemical energy store 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 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 has a fuse in the energy storage unit ( 12 ) is provided. Locking arrangement ( 1 ) according to one of the preceding claims, characterized in that the holding device ( 7 ) an electrically flowable component ( 10 ), in particular a magnetic coil, wherein the locking arrangement ( 1 ) a measuring point ( 17 ) for determining an electrical current strength (I ₁ ), which by the electrically flowable component ( 10 ), wherein a defect in the intended supply of the holding device ( 7 ) is present with electric current when the measured current (I ₁ ) is outside a predetermined value range (I ₀ , I ₂ ). Locking arrangement ( 1 ) According to one of the preceding claims, characterized in that a second voltage measuring point ( 26 ) for determining a the electrical voltage of the energy buffer ( 15 ) characterizing voltage value (U ₂ ) is provided. Locking arrangement ( 1 ) according to one of the preceding claims, characterized in that a defect in the intended supply of the holding device ( 7 ) is present when a charge of the energy buffer ( 15 ) fails to a target voltage value (U _V2 ) within a predetermined charging period (.DELTA.t ₄ ). Locking arrangement ( 1 ) according to one of the preceding claims, characterized in that a defect in the intended supply of the holding device ( 7 ) is present with electric current, if a voltage drop (ΔU ₂ ) determined at the second voltage measuring point occurs during a discharge of the energy buffer ( 15 ) is greater than a predetermined maximum value (ΔU _V ) for a given discharge period (Δt ₂ ). Locking arrangement ( 1 ) according to one of the preceding claims, characterized in that at least two mutually redundant energy buffers ( 15 ) and / or at least two mutually redundant electrically flowable components ( 10 ) having. Locking arrangement ( 1 ) according to one of the preceding claims, characterized in that the locking arrangement ( 1 ) at least two control devices ( 11 ), which monitor each other, whereby a defect in the intended supply of the holding device ( 7 ) is present when there is a control device ( 11 ) is faulty. Locking arrangement ( 1 ) according to one of the preceding claims, characterized in that a defect in the intended supply of the holding device ( 7 ) is present when leaving a power saving mode of the control device ( 1 ) is missing. Locking arrangement ( 1 ) According to one of the preceding claims, characterized in that a button ( 19 ) is provided to after a transfer to the releasing position (GZ), in particular after receiving a trigger signal a hazard detector and / or a change of the energy storage unit ( 12 ), a re-arrangement of the holding device ( 7 ) in the determining state (SZ). Locking arrangement ( 1 ) according to one of the preceding claims, characterized in that after falling below the predetermined voltage value (U _V1 ) and / or exceeding the predetermined maximum value (ΔU _V ) the holding device ( 7 ) remains in the released state (GZ), wherein in particular upon actuation of the button ( 19 ) a transfer to the determining state (SZ) is prevented. Procedure ( 30 . 40 . 50 . 60 ) for operating a locking arrangement ( 1 ), wherein the locking arrangement a holding device ( 7 ) for detecting a door ( 2 ), in particular in an open position, wherein the holding device ( 7 ) is transferred by a supply of electrical energy from a determining state (SZ) in a releasing state (GZ), characterized in that the holding device ( 7 ) is transferred from the determining state (SZ) to the releasing state (GZ) when a defect in the intended supply of the holding device (SZ) ( 7 ) occurs with electric current and / or a predetermined voltage value (U _V1 ) for an energy storage unit ( 12 ), which are used to supply the holding device ( 7 ) is used with electrical energy, falls below.

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