Electronic control for an electric motor drive of a locking device

Abstract

Electronic control for an electric motor drive (1) of a locking device, in particular a roller shutter, characterized by that the control unit (2) has at least one current measuring device (7) for measuring the current of the electromechanical drive (1) and that the control unit (2) is designed and / or programmed in such a way that it can derive from the current measurements The functionality of the electric motor drive (1) is determined and, in case of insufficient functionality, a fault signal (8) is output.

Description

[0001] The invention relates to an electronic control for an electric motor drive of a locking device, in particular a roller shutter.

[0002] For the purposes of the present invention, a closing device is primarily understood to be a roller shutter, but the closing device can also be a roller door, a roller grille, a sectional door, a blind, a swing wing, a swing door, a folding grille, etc.

[0003] Electric roller shutters are becoming increasingly common. However, balcony or patio doors, or even windows, may be required to serve as a secondary escape route. If such a door is equipped with an electric roller shutter, it must be ensured that, in case of danger, particularly a fire, escape via a secondary escape route is possible. The electric roller shutter must therefore be able to be opened in the event of a fire, allowing people inside the building to leave through the now unblocked door and / or enabling emergency services to gain access to the building's interior through the door.

[0004] From DE 20 2013 011 403 U1, a roller shutter is known that can be wound onto a roller shutter shaft. The roller shutter shaft is driven by an electric motor. The electric motor can be a tubular motor located inside the roller shutter shaft, or it can be a geared motor attached to the roller shutter shaft. The electric motor is normally connected to the house's electrical supply. An electronic control unit is associated with the electric motor, which allows the electric motor to be activated arbitrarily by a user or, for example, depending on the time of day, the position of the sun, or other criteria, in one direction or another.

[0005] In this known state of the art, the electronic control unit is equipped with a receiver for fire alarm signals from a transmitter of a fire detector. A fire detector located in a room has an electronic transmitter for fire alarm signals. The control unit is designed and / or programmed so that the transmitter and receiver communicate with each other during operation. If the receiver of the control unit for the electric motor drive receives a fire alarm signal, the control unit switches, the drive is activated, and the locking device is opened. In addition, the control unit and the electric motor drive for the locking device are each equipped with a battery, preferably a rechargeable battery. The battery capacity is sized so that the locking device can be fully opened at least once by the electric motor drive using only battery power.

[0006] However, the need for an additional (rechargeable) battery is a disadvantage in many applications, as the battery requires space that may not be available depending on the installation situation.

[0007] The object of the invention is to ensure reliable opening of a locking device, in particular a roller shutter, in an emergency without any additional design effort.

[0008] This problem is solved according to the invention in an electronic control of the type described above by the fact that the control has at least one current measuring device for measuring the current of the electromotive drive and that the control is designed and / or programmed in such a way that it determines the functionality of the electromotive drive from the current measurements and outputs a fault signal in case of lack of functionality.

[0009] By measuring the current of the electric motor drive and evaluating the measured values ​​using the electronic control system, any malfunctions in the electric motor drive can be detected in time, thus ensuring reliable opening of the locking device in case of danger without additional design effort. This opening can occur automatically if the control system is linked to a fire alarm, for example.

[0010] According to a preferred embodiment, the control system is designed and / or programmed to control the electromechanical drive at predetermined time intervals to open and / or close the locking device and to evaluate the measured values ​​of the current measuring device recorded during this time.

[0011] According to an alternative design, the control system is designed and / or programmed to evaluate the measured values ​​of the current measuring device each time the electric motor drive is actuated.

[0012] In a further embodiment, it is provided that the control system is designed and / or programmed to release a measuring current to the electromechanical drive permanently or at predetermined time intervals and to check for a possible cable break using the current measurements taken by the current measuring device.

[0013] Another embodiment provides that the controller has an additional current measuring device and that the controller is designed and / or programmed in such a way that it determines the functionality of a button or switch connected to the controller from the current measurements of the additional current measuring device and outputs a fault signal if it is not functioning.

[0014] In the event that a radio receiver is used as an alternative or additional control solution, the radio link between receiver and transmitter can also be monitored for functionality, e.g. by cyclically transmitting a signal to control or monitor the radio link.

[0015] A fault report can be sent via any route to higher-level control systems, signal transmitters, indicator lights, etc. (potential-free contacts, radio signal, WLAN, Bluetooth or similar).

[0016] The electronic control unit can be put into sleep mode when a building under construction is detected. In sleep mode, any battery must be largely deactivated. Only the processor current (a few microamps) should flow, or, to conserve energy, the electronic control unit should only periodically check whether the sleep mode can be deactivated. The building under construction status is detected when there has been no mains power for a certain period (e.g., 24 hours) and no operation has been performed via a manual or central control unit. The locking mechanism can then be automatically activated, after which the electronic control unit is deactivated. The escape route remains open even in the building under construction status. The electronic control unit can be reactivated by the return of mains power and / or by prolonged activation of the individual control unit.

[0017] The invention is explained in more detail below with reference to the drawing.

[0018] This shows in Fig. 1. A schematic diagram of an electronic control system for an electromechanical drive of a locking device.

[0019] An electronic control unit for an electric motor drive 1 of a locking device (not shown), in particular a roller shutter, is generally designated by 2. The electric motor drive 1 is, for example, a tubular motor.

[0020] The electric motor drive 1 is connected to a power supply network 3 via the electronic control unit 2, whereby a battery 4 may be interposed. The electronic control unit 2 has a processor or microprocessor and is connected to the electric motor drive 1 via a motor driver 5. A current measuring device 7 (measuring line 6) for measuring the current of the electric motor drive 1 is provided in the line between the control unit 2 and the electric motor drive 1.

[0021] The controller 2 can output a fault signal 8 or other signals or messages to an external evaluation unit 9.

[0022] For manual operation of the control unit 2 and thus of the drive 1, the control unit 2 is connected to a switch or button 10, wherein a further current measuring device 11 is provided in the connecting line, which is additionally connected to the control unit 2 via a measuring line 12.

[0023] Furthermore, the control unit 2 can additionally or alternatively be connected to a radio receiver 13, which communicates wirelessly with a control transmitter 14 via radio, Bluetooth, or similar technology. The radio receiver 13 can also be installed or positioned directly in the motor drive 1.

[0024] The control unit 2 is designed and / or programmed to determine the functionality of the electromechanical drive 1 from the current measurements of the current measuring device 7 and outputs a fault signal 8 in case of lack of functionality.

[0025] Preferably, the control unit 2 is designed and / or programmed to control the electromechanical drive 1 at predetermined time intervals to open and / or close the locking device and to evaluate the measured values ​​of the current measuring device 7 recorded during this time.

[0026] The control unit 2 is further designed and / or programmed to determine the functionality of the push button or switch 10 connected to the control unit 2 from the current measurements of the additional current measuring device 11 and outputs a fault signal 8 if it is not functioning. Reference symbol list: 1 electric motor drive 2 electronic control 3 Power supply network 4 batteries 5 motor drivers 6 measuring leads 7 Current measuring device 8 Interference signal 9 external evaluation units 10 switches / pushbuttons 11 additional current measuring devices 12 measuring leads 13 radio receivers 14 control transmitters QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 20 2013 011 403 U1

[0004]

Claims

[1] Electronic control for an electric motor drive (1) of a locking device, in particular a roller shutter, characterized by , that the control unit (2) has at least one current measuring device (7) for measuring the current of the electromechanical drive (1) and that the control unit (2) is designed and / or programmed in such a way that it can derive from the current measurements The functionality of the electric motor drive (1) is determined and, in case of insufficient functionality, a fault signal (8) is output. [2] Electronic control according to claim 1, characterized by , that the control (2) is designed and / or programmed to control the electromechanical drive (1) at predetermined time intervals to open and / or close the locking device and evaluates the measured values ​​of the current measuring device (7) recorded during this time. [3] Electronic control according to claim 1, characterized by, that the control (2) is designed and / or programmed to evaluate the measured values ​​of the current measuring device (7) each time the electromechanical drive (1) is actuated. [4] Electronic control according to one or more of claims 1 to 3, characterized by , that the control (2) is designed and / or programmed to release a measuring current to the electromechanical drive (1) permanently or at specified time intervals and to check for a possible cable break using the current measurements taken by the current measuring device (7). [5] Electronic control according to one or more of claims 1 to 4, characterized by , that the control (2) has a further current measuring device (11) and that the control (2) is designed and / or programmed to determine the functionality of a push button or switch (10) connected to the control (2) from the current measurements of the further current measuring device (11) and outputs a fault signal (8) in case of lack of functionality.

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