DE102021203025A1 - Door lock system, door and method for controlling a door lock system - Google Patents

Abstract

A door lock system for a door includes a handle lock that can be connected to a door handle, a motor for mechanically coupling and decoupling the handle lock and at least one handle half of the door handle, a control device for controlling the motor, and an energy store for storing electrical energy and for providing the electrical energy for the motor in order to couple the handle half with the handle lock in the event of a power failure.

Description

The invention relates to a door lock system that includes a lever lock that can be connected to a door handle. The invention also relates to a door with such a door lock system and a method for controlling such a door lock system.

Door lock systems with, in particular, electromagnetic latch locks are known in principle and work either according to a closed-circuit principle or according to an open-circuit principle. With the closed-circuit principle, one half of a door handle is engaged when a connected electromagnet is not energized. With the working current principle, the lever handle half of a door handle is engaged when the electromagnet is energized.

However, in the case of electromechanical lever locks, even with a quiescent current principle, a controller and the electromagnet must be permanently supplied with energy. This causes a high continuous holding current, which can be about 100 mA, for example. The power part of the control causes a power loss, although it is not required when the door is stationary. With a power consumption of the controller and the magnet of 2.4 W, for example, eight hours of quiescent current operation per day results in unnecessary energy consumption of 70 kWh per year.

The object of the present invention is to reduce the power consumption of a door lock system with a lever lock.

This object is solved by the subject matter of the independent claims. Advantageous configurations are the subject matter of the dependent claims and are specified in the description and the drawings.

The door lock system according to the invention for a door comprises a handle lock that can be connected to a door handle, a motor, in particular an electric motor, for mechanically coupling and decoupling the handle lock and at least one half of the door handle, a control device, for example a microcontroller, for controlling the motor and an energy store for storing electrical energy and for providing the electrical energy for the motor in order to couple the handle half to the handle lock in the event of a power failure.

The control device consequently controls the motor, so that the at least one half of the handle is mechanically coupled or decoupled by means of the motor. In principle, two operating principles are possible with the door lock system, namely an open-circuit principle and a closed-circuit principle. With the working current principle, the handle half is coupled when voltage is present at a release input provided for this purpose on the motor. With the quiescent current principle, the pusher half is coupled when the voltage supply to the release input is removed.

The door handle, which can also be referred to as a door handle, can have two handle halves. For example, each handle half can be designed as a door handle or as a door knob. The handle half to be coupled or uncoupled can in particular be the handle half attached to the outside of the door, so that access to the building is made possible by coupling the handle half.

Consequently, the handle half to be coupled or decoupled is coupled (closed-circuit principle) or decoupled (open-circuit principle) in the currentless state. Thus, when using the working current principle, the handle half must still be coupled by the motor in the event of a power failure in order to continue to allow access to the building. In order to enable this process in the event of a power failure, the electrical energy required for this is held available by the energy store and made available for the motor and the control device if required.

The door lock system according to the invention thus makes it possible for the motor and the control device to be supplied with energy even in the event of a power failure. Accordingly, a restart of the control device is not necessary in this case. Because an electromagnet does not have to be permanently energized, the power consumption during operation can be significantly reduced, with continuous operation, that is, for example, permanent coupling of the half of the handle during day-to-day operation, being easily possible.

The control device preferably has a power input and is designed to detect a power failure at the power input. The current input is preferably connected to the power supply of the motor and can be provided with a voltage sensor, so that when there is no longer any voltage present, a power failure and an interrupted power supply to the motor are detected.

The control device is designed in particular to detect a power failure Drive the motor to couple the handle half with the handle lock. This means that access to the building remains possible despite a power failure. The energy supply required for activation is ensured by the energy store.

In an advantageous embodiment, the control device is designed to switch off any peripheral devices connected to the door lock system when a power failure is detected, in order to reduce the energy requirement to the level required for the basic function. The peripheral devices connected to the door lock system can be any type of power consumer, for example a bus driver.

The door lock system may include a step-up converter for boosting an input voltage provided by an input power supply to a voltage suitable for the motor. For example, the input voltage may be 12V (DC) and the motor may be dependent on a voltage of 24V. The motor and the energy store are downstream of the step-up converter so that they can each be supplied with a voltage that is suitable for the motor. The control device is also preferably located downstream of the step-up converter in order to be able to monitor the power supply of the motor at the current input.

The door lock system preferably has at least one step-down converter for lowering a voltage to a voltage suitable for the control device. Furthermore, the door lock system can also have several step-down converters connected in series in order to achieve a stepping down. The step-down converters can be designed as voltage regulators, which lower the voltage suitable for the motor (for example 24 V) to a voltage suitable for the control device (for example 3.3 V). In particular, the step-down converters can be located downstream of the energy store.

The control device can be connected to at least one bus system for data communication with an access control system and/or for setting an operating mode of the door lock system and/or for parameterizing the door lock system. The bus system can in particular be a CAN bus or an ST220/RS485. For example, the bus system can be used to parameterize the door lock system, as a result of which it can be set, for example, to the open-circuit principle or to the closed-circuit principle. In addition, the door lock system can be connected to an access control system using the bus system.

In particular, the handle lock can be designed as a self-locking anti-panic handle lock.

• Überwachen einer Stromversorgung, um einen Stromausfall zu erkennen, und, bei Erkennen des Stromausfalls,
• Bereitstellen der in dem Energiespeicher gespeicherten elektrischen Energie für den Motor und Ansteuern des Motors, um die Drückerhälfte mit dem Drückersperrschloss zu koppeln.

The method according to the invention is used to control a door lock system which has a handle lock which can be connected to a door handle, a motor for mechanically coupling and decoupling at least one handle half of the door handle and the handle lock lock and an energy store for storing electrical energy. The procedure includes the following steps:

• monitoring a power supply to detect a power failure and, upon detection of the power failure,
• Providing the electrical energy stored in the energy store for the motor and driving the motor in order to couple the handle half to the handle lock.

The method ensures that the motor and the control device are supplied with energy even in the event of a power failure. In addition, compared to solutions based on the use of an electromagnet, the power consumption during operation can be significantly reduced.

The method preferably also includes a step of switching off peripheral devices connected to the door lock system when the power failure is detected, in order to reduce the energy requirement to the level required for the basic function.

• 1 eine Seitenansicht einer Tür mit einem Türdrücker und einem Türschloss und
• 2 eine schematische Darstellung der Systemstruktur eines Türschlosssystems gemäß einem Ausführungsbeispiel.

The invention is explained below by way of example using an advantageous embodiment. In the drawings, which schematically illustrate the embodiment, shows

• 1 a side view of a door with a door handle and a door lock and
• 2 a schematic representation of the system structure of a door lock system according to an embodiment.

1 shows a door 10 with a door handle 15, which has a first handle half 17 designed as a door handle and mounted on the inside of the building and a second half 19 designed as a doorknob and mounted on the outside of the building.

The door 10 is also provided with a door lock system 11 which has a handle lock 13 connected to the door handle 15 .

The system structure of the in 1 shown door lock system 11 goes out 2 and shows that the door lock system 11 is provided, inter alia, with a motor 21 embodied as an electric motor, a control device 23 embodied as a microcontroller for actuating the motor 21 and an energy store 25 .

The motor 21 serves to mechanically couple and decouple the handle lock 13 and at least one of the handle halves 17, 19 of the door handle 15, in particular the second handle half 19, and is via a motor bridge 22, which converts control signals provided by the control device 23 into a motor 21 suitable form converts, connected to the control device 23.

The energy store 25 stores electrical energy and makes it available for the motor 21 and also for the control device 23 in the event of a power failure.

To power the door lock system 11, it is provided with an input power supply unit 31, which provides a power supply at 12 V (direct voltage), for example. A step-up converter 29 (“step-up converter”) is connected downstream of the input power pack 31 in order to increase the voltage to a supply voltage for the motor 21, for example to 24 V (DC voltage).

A line is routed downstream of the step-up converter 29 to a current input 27 of the control device 23 so that the control device 23 is able to detect a power failure. Furthermore, the energy store 25 is connected downstream of the step-up converter 29 and thus stores electrical energy at a voltage (supply voltage) suitable for the motor 21 in order to be able to supply it with energy in the event of a power failure.

In the present example, a supply voltage suitable for the control device 23 is provided by means of two step-down converters 33, 35 connected in series. However, depending on the voltage differences present in the individual case, only one step-down converter or more than two step-down converters can be provided. This can be useful, for example, if a power supply has to be provided for several components at different voltage levels. For example, the motor 21, the control device 23 and a bus system 37, 41 can be dependent on a power supply for three different operating voltages, so that a multi-stage step-down conversion of the voltage is required.

In the present example, the step-down converters 33, 35 are designed as an upstream 5 V regulator (step-down converter 33) and as a downstream 3.3 V regulator (step-down converter 35), which in the present case reduces the voltage from the voltage of 24 V down to a suitable voltage of 3.3V for the controller 23 .

The control device 23 is also connected to two bus systems 37, 41. A bus system 37 designed in the present example as a CAN bus (Controller Area Network) is used, for example, for data communication with an access control system using a corresponding driver 39.

Another bus system 41 can, as in the present example, be designed as an RS485 bus and also be designed for data communication by means of a driver 43, with a separate parameterization device (not shown) not belonging to the invention being connected to a corresponding plug of the door lock system 11, for example can be. The bus system 41 can be used in particular to set an operating mode (open-circuit principle or closed-circuit principle) and/or to parameterize the door lock system 11 .

During operation, the control device 23 monitors at the current input 27 , for example by means of a voltage sensor, whether there is a power supply from the input power pack 31 . If the control device 23 detects an interrupted power supply, it recognizes a power failure and controls the motor 21 in order to couple the second handle half 19 to the handle lock 13 . This means that access to the building is still possible. In order to be able to carry out the coupling, the motor 21 is supplied with the electrical energy stored in the energy store 25 . In order to reduce the energy requirement of the entire system in this emergency operation until the regular power supply is restored to the absolutely necessary level, the control device 23 simultaneously switches off any peripheral devices (not shown) connected to the door lock system 11 .

Due to the use of the motor for coupling and decoupling the handle half 19, the door lock system 11 eliminates the need for a continuous current supply, so that the power consumption in regular operation is significantly reduced. In the event of a power failure, the provision of the energy store 25 nevertheless enables the latch half 19 to be coupled.

reference list

10

door

11

door lock system

13

handle lock

15

door handle

17

first half of the handle

19

second pusher half

21

engine

22

engine bridge

23

control device

25

energy storage

27

power input

29

boost converter

31

input power supply

33

buck converter

35

buck converter

37

bus system

39

driver

41

bus system

43

driver

Claims (11)

Door lock system (11) for a door (10), comprising a handle lock (13) which can be connected to a door handle (15), a motor (21), in particular an electric motor, for mechanically coupling and decoupling the handle lock (13) and at least one half (17, 19) of the door handle (15) and, a control device (23) for driving the motor (21) and an energy store (25) for storing electrical energy and for providing the electrical energy for the motor (21) to in the event to couple the handle half (17, 19) to the handle lock (13) in the event of a power failure. Door lock system (11) according to claim 1 , characterized in that the control device (23) has a power input (27) and is designed to detect a power failure at the power input (27). Door lock system (11) according to claim 1 or 2 , characterized in that the control device (23) is designed to activate the motor (21) when a power failure is detected in order to couple the handle half (17, 19) to the handle lock (13). Door lock system (11) according to one of Claims 1 until 3 , characterized in that the control device (23) is designed to switch off peripheral devices connected to the door lock system (11) when a power failure is detected. Door lock system (11) according to one of Claims 1 until 4 , characterized by a step-up converter (29) for increasing an input voltage provided by an input power pack (31) to a voltage suitable for the motor (21). Door lock system (11) according to one of Claims 1 until 5 , characterized by at least one step-down converter (33, 35) for lowering a voltage to a voltage suitable for the control device (23). Door lock system (11) according to one of Claims 1 until 6 , characterized in that the control device (23) can be connected to at least one bus system (37, 41) for data communication with an access control system and/or for setting an operating mode of the door lock system (11) and/or for parameterizing the door lock system (11). Door lock system (11) according to one of Claims 1 until 7 , characterized in that the handle lock (13) is designed as a self-locking anti-panic handle lock. Door (10) with a door handle (15), characterized by a door lock system (11) according to one of Claims 1 until 8th , wherein the handle lock (13) is connected to the door handle (15). Method for controlling a door lock system (11) comprising a handle lock (13) which can be connected to a door handle (15), a motor (21) for mechanically coupling and decoupling the handle lock (13) and at least one handle half (17, 19) of the door handle (15) and an energy store (25) for storing electrical energy, comprising the following steps: monitoring a power supply to detect a power failure and, upon detection of the power failure, Providing the electrical energy stored in the energy store (25) for the motor (21) and driving the motor (21) in order to couple the handle half (17, 19) to the handle lock (13). procedure after claim 10 , characterized by the step: switching off with the door lock system (11) ver connected peripheral devices upon detection of the power failure.

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