EP3220361A1 - System for unlocking a lock on an area to be locked off - Google Patents

Abstract

The invention relates to a system for unlocking a lock on a space to be shut off, in particular a device or control cabinet (1), wherein in the locked state of the lock, an electromagnetically driven latch (5, 6, 7) by applying an electrical voltage from a Lock locking state can be transferred to a lock releasing state, wherein the lock is arranged inside the room and is provided with a code storage device (8), which the operation of the bolt (5, 6, 7) only if a match in the Code memory device (8) allows codes stored with a from the outside of the room via the room wall wirelessly to the code memory device (8) transmitted codes of a key. According to the invention, an electromagnetic energy absorption device (7) is arranged in the interior of the room, which can be supplied with electrical energy for actuating the bolt (5, 6, 7) from the outside of the room by inductive transmission via the room wall from an external energy source. is available to release the lock upon agreement of the code stored in the code memory device (8) with the transmitted over the room wall code of the key.

Description

The invention relates to a system for unlocking a lock on a space to be shut off, in particular a device or control cabinet, according to the preamble of claim 1.

The closing and unlocking of rooms to be secured is usually done by means of a lock that can be released or locked with a key. Each user of the lock requires a key for this purpose, so that in the case of a large number of users, a corresponding number of keys generally has to be present. If a key is lost, therefore, the lock cylinders used in safety-critical locks should be replaced, so that new keys have to be created for all users.

In recent years, electronic locks have also become known, which make it possible to operate the lock by entering a code on a keyboard, so that access is possible for all persons who know the code. A required change of code for various reasons is possible in a simple manner and only requires the transmission of the new code to the authorized persons.

In other keyless entry systems, chip cards with stored codes are used instead of keys. Such a system prevents the knowledge of the code is already sufficient to operate a lock. Smart cards can be easily replaced when needed, or they can be reprogrammed in the event that programmable smart cards are used.

Since electronic locks require only a code transmission for unlocking, it is necessary to continue to perform the actual lock release mechanically. This can be done either by an operating handle, which is arranged on the outside of the room, which releases a locking bar after entering an authorization code, or by an electromagnetically controllable latch which is actuated, as soon as a release of a released by the electronic key control circuit has taken place ,

In an electronic locking system electrical energy is therefore required in any case, on the one hand to supply a required for the release of the lock code memory device with electricity and on the other hand to drive a locking bolt in an electrical operation.

It is known to provide electronic locks of batteries, accumulators or even photovoltaic elements with energy. In frequent use, however, batteries or accumulators are quickly exhausted, especially when used at low temperatures outdoors, so that often occurs the case that a lock can not be operated because of lack of energy. The use of photovoltaic energy is limited to illuminated places.

If low-voltage energy is available in a room, such as a control cabinet, this energy can be diverted to operate the lock, but this should be avoided if possible, since this is a foreign use, which is often not permitted for contractual reasons. In a control cabinet for high voltage energy, a use of this energy for low power purposes prohibits anyway for technical reasons.

Many outdoor enclosures contain telecommunication facilities that are powered off, especially fiber optic distribution cabinets. There is no possibility to use existing energy. Mail distribution cabinets are also not connected to an electrical power supply. However, such cabinets must be able to be used by a large number of persons who are authorized to carry out maintenance work in a corresponding cabinet or, in the case of postal distribution cabinets, to insert or remove mailpieces from the cabinet. These authorizations must be restricted to specific cabinets or limited in time. The authorizations must also be able to be constantly updated according to a security plan. The use of simple mechanical lock arrangements is too expensive and too unsafe for these purposes.

The invention is therefore an object of the invention to provide a system for unlocking a lock on a space to be shut off, in particular a device or cabinet, which has an electronic security system that requires no energy storage or connection to a power supply and which flexibly adjustable to changing security requirements is.

This object is achieved by the invention defined in claim 1. Advantageous developments of the invention are specified in subclaims.

The invention relates to a system for unlocking a lock on a space to be shut off, in particular a device or control cabinet, in which in the locked state of the lock, an electromagnetically driven latch by applying an electrical voltage from a lock-unlocking state in a release the lock Condition can be transferred, wherein the lock is disposed in the interior of the room and is provided with a code storage device. This allows the operation of the bolt only in accordance with a code stored in the code memory device with a wirelessly transmitted from the outside of the room via the room wall codes to the code storage device codes.

According to the invention, an electromagnetic energy receiving device is arranged in the interior of the room, which can be supplied from the outside of the room electrical energy by inductive transmission through the room wall from an external power source, which provides electrical energy for actuating the bolt to the lock in accordance with the to release codes stored in the code memory device with the code of a key transmitted over the wall of the room.

The invention combines an electronic lock with an electromagnetically driven latch with a locking and unlocking circuit, wherein the energy required for this purpose is temporarily received wirelessly from an external power source. The system is therefore a purely passive system that only becomes active when from the outside energy is transmitted via the wall of the room to the interior of the room. The unlocking of the lock with the aid of this energy can, however, only take place when a key code matches a code stored inside the room in a code memory device.

As soon as the energy source is removed from the room wall, the circuit in the interior of the room returns to the passive state, so that the room is shut off again.

Preferably, the electrical energy supplied into the interior from the outside of the room is buffered in a buffer memory. This makes it possible to remove the energy source from the room wall already after a short charge of the buffer, if necessary. As a buffer memory, a storage capacitor is preferably used.

In order to be able to compare the key code of the key carried by the user with the code stored in the code memory means in the interior of the room, the key code is transmitted via a wireless communication of a near-field connection. This near field communication connection may preferably be an RFID transponder connection, an NFC communication connection or a Bluetooth connection. A near field communication link via RFID or NFC is preferred to reduce the range of code transmission to a short distance, e.g. B. in the centimeter range, to be able to restrict.

In order to be able to transfer energy from the energy source to the energy absorption device arranged in the interior of the room, the energy source is preferably temporarily fixed at a specific location by means of a holding magnet on the outside of the room. This has the advantage that by appropriate localization of the holding magnet, the energy source can be kept exactly at the place where the energy absorbing device is located inside the room. Preferably, the energy transmission device is designed according to the QI transmission system, which allows a transformatory transmission of electrical energy by means of two coils which are aligned parallel to each other in parallel.

The energy source used on the outside of the room can also at least temporarily transfer electrical energy to the key, provided that it does not have its own energy source. Preferably, therefore, the key and the power source form a unit, so that the user has to carry only one unit of equipment.

So that the energy transfer between the energy source and the energy storage unit on the one hand and the transmission of the code between the key and the code storage unit on the other hand, do not influence each other, the transmission of the energy and the key code preferably takes place in temporal change.

The mechanical part of the locking system preferably consists of one or more latches in the interior of the room, which are electromagnetically actuated when released by the code memory device. The latches can also be actuated by an external handle as soon as a lock is released inside the room by the code storage device. The one or more bolts are preferably under spring force, so that they are in the passive state of the lock system in the locked position or fall back in it to prevent unintentional release of the castle of the room door.

For documentation purposes, all switching operations, opening operations, user identifications, etc. may be permanently or temporarily stored in a log memory in the code memory device. From this memory device, they can preferably be electronically read out or evaluated by means of a separately secured communication connection. The reading can be done via a USB connection or wirelessly, in the latter case opening the room is not required.

Fig. 1

einen Kabelverzweiger der Telekommunikationstechnik mit einem Schlosssystem gemäß der Erfindung mit geöffneter Tür,

Fig. 2

einen Kabelverzweiger mit transparent dargestellter Tür im geschlossenen Zustand,

Fig. 3

eine Vorderansicht eines Kabelverzweigers mit geschlossener Tür, und

Fig. 4

eine Innenansicht einer Tür mit einem erfindungsgemäßen Schlosssystem.

The invention will be explained in more detail below with reference to an embodiment. Show it:

Fig. 1

a telecommunication cable divider with a lock system according to the invention with the door open,

Fig. 2

a cable distributor with transparent door in the closed state,

Fig. 3

a front view of a Kabelverzweigers with closed door, and

Fig. 4

an interior view of a door with a lock system according to the invention.

Fig. 1 shows a space to be blocked, which is exemplified as a cable divider of the communication technology. The term "space to be locked" is also to be understood as meaning other types of spaces which have a door to be locked in which the interior of the room is to be protected against unauthorized access or access. These include devices or control cabinets for telecommunications equipment, for power supply or for mail. The invention is particularly useful for such spaces that do not contain their own power supply and that are outdoors, being exposed to changing environmental conditions, such as high and low temperatures. The invention is therefore particularly suitable for Kabelverzweiger communication technology over the purely passive optical fiber connections are made, which are de-energized.

Such a cabinet 1 is usually firmly anchored to the ground and has a door 2, which can be shut off via sliding or pivotable latch 4, 5, 6, wherein the door 2 is articulated via a hinge 3 to a cabinet edge.

On the inside of the door there is an energy intake device 7 and a code storage device 8, which are connected to one another via a connecting line 9. The material of the door is preferably made of unbreakable plastic or metal, wherein in the case of a metal door, the region of the door 2, on which the energy absorbing device 7 is located on the inside, preferably consists of plastic.

Fig. 2 shows a corresponding cabinet view with the door closed, the door is shown semipermeable. On the outside of the door is only the lock part 10 with a handle 11, as it is also in Fig. 3 is shown. The location of the energy absorption device 7 is therefore not visible from the outside.

Fig. 3 shows the closed cabinet.

• Jeder autorisierte Benutzer verfügt über eine mobile Energiequelle, beispielsweise eine Akku- oder Batteriespeichereinheit, die mit einer Ladespule versehen ist, die elektrische Energie induktiv an eine sich im Nahfeld der Spule befindliche Energieaufnahmeeinrichtung übertragen kann. Das Prinzip einer solchen Energieübertragung ist unter der Bezeichnung QI insbesondere für Mobiltelefone und Tablets bekannt geworden. Das QI-Prinzip verwendet eine resonante induktive Kopplung zwischen Sender und Empfänger. Neben einer QI-Übertragungstechnologie sind ähnlich arbeitende konkurrierende Systeme bekannt, die jeweils grundsätzlich eine Sendespule oder eine Empfangsspule verwenden, die parallel zueinander angeordnet werden, und außerdem in Kommunikationsverbindung stehen, um die Energieübertragung zu überwachen.

The inside of the door is in again Fig. 4 shown. The lock system is operated in the following way:

• Each authorized user has a mobile power source, such as a battery or battery storage unit, which is provided with a charging coil that can inductively transmit electrical energy to an energy receiving device located in the near field of the coil. The principle of such energy transfer has become known under the name QI, especially for mobile phones and tablets. The QI principle uses a resonant inductive coupling between transmitter and receiver. In addition to a QI transmission technology, similarly operating concurrent systems are known, which in each case basically use a transmitting coil or a receiving coil, which are arranged parallel to one another, and are also in communication connection in order to monitor the energy transmission.

In order to be able to determine the location on the inside of the door, the energy absorbing device 7, from the outside of the door, located on the inside of the door at the location of the energy absorbing device 7, a magnet which acts on a located on the energy source magnetizable plate , The magnet can also be arranged vice versa on the power source. The magnetic holder thus produced ensures that the energy source can be attached to the cabinet door exactly at the point where the energy absorption device 7 is located on the inside located. Another advantage of the magnet is that the power source can be held on the cabinet door without the user having to hold it constantly.

The electrical energy received by the energy receiving device 7 is transmitted to the code storage device 8 via the connection line 9. The code memory device 8 contains a circuit which performs an evaluation of a code transmitted from the outside of the cabinet with a code stored in the code memory device and emits an unlock signal when the codes match, which can release a pawl electromagnetically, so that then the sliding bolt 4 and 5 and the pivot bolt 6 can be operated. The operation of the latch can be done either directly by an electromagnet or by mechanical actuation of the handle 11 on the outside of the door, which is actuated after release of a pawl inside the cabinet. During the mechanical actuation of the handle 11, less energy is required so that less electrical energy is to be transmitted via the energy absorption unit 7.

The transmission of the release code between the user-carried key to the code memory device 8 is preferably carried out via an RFID transmission, a Bluetooth transmission, an NFC transmission (near field communication) or a wireless LAN transmission (WLAN), wherein an RFID or NFC transmission is preferred.

The transmission of the code of the key to the interior of the cabinet requires only a small amount of energy, which can be provided from button cells of the key. However, the key and external power source may also form a unit so that the radio transmission module of the key can also be powered from the external power source.

In order not to disturb the transmission of the code of the key by the energy transfer to the energy receiving device 7, the transmission of the key and the energy transfer to the energy receiving device 7 are preferably carried out in temporal change. The corresponding control of the changeover can be controlled by the control circuit of the external power source.

To restrict use of the electronic key, each cabinet may have a unique identifier and other attributes stored in the code storage device, particularly in an RFID transponder residing therein. This makes it possible to refer a key exclusively to a specific cabinet or a group of cabinets. Additional attributes may be used to restrict access to the cabinet only for certain keys, e.g. As maintenance key or master key to give. The keys may also be assigned a limited validity period. If the key is lost, therefore, there is little potential for abuse.

In order to determine which key has taken access to the respective cabinet at which time, the code storage means may also include a log memory which is accessible via a master key, e.g. B. via Bluetooth connection or via an internal USB port, can be read. For configuring and reading out the code storage device, a program app that is set up on a smartphone or a tablet is particularly suitable.

The system according to the invention is particularly suitable for passive rooms, in particular cable distributors of communication technology or distribution cabinets for mail. The rooms do not require a built-in power source or a permanently installed power supply.

In addition to the aforementioned spaces, the invention is basically suitable for accessible rooms with access doors, especially if they are particularly secure and no energy source for electrical operation of the castle is available.

reference numeral

1

wardrobe

2

door

3

hinge

4

Shootbolt

5

Shootbolt

6

swivel bolt

7

Energy absorber

8th

Code storage device

9

connecting line

10

lock part

11

Handle

Claims (9)

System for unlocking a lock on a space to be locked, in particular a device or control cabinet (1), wherein in the locked state of the lock, an electromagnetically driven latch (5, 6, 7) by applying an electrical voltage from a lock-locking state in a lock releasing state can be transferred, wherein the lock is arranged in the interior of the room and is provided with a code storage device (8) which the operation of the bolt (5, 6, 7) only if a match in the code memory device (8) stored codes with a from the outside of the room via the room wall wirelessly to the code memory device (8) transmitted codes of a key, characterized in that in the interior of the room, an electromagnetic energy absorbing device (7) is arranged, which from the outside of the room by inductive Transmission over the room wall from an external energy source electrical energy can be supplied, which provides electrical energy for actuating the bolt (5, 6, 7) to release the lock upon agreement of the code stored in the code memory device (8) with the transmitted over the room wall code of the key. System according to claim 1, characterized in that the electrical energy supplied from the outside of the room is stored in a buffer memory. System according to claim 1, characterized in that the wireless communication between the code memory device (8) and the key by means of a near field connection, in particular an RFID transponder connection, an NFC communication connection or a Bluetooth connection takes place. System according to claim 1, characterized in that a holding magnet is arranged on the energy source or the room wall, with the aid of which Power source can be arranged and held on the outside of the room at a location of the room wall, on which is located on the inside of the room, the energy absorbing device (7). System according to claim 1, characterized in that the energy source at least temporarily transfers electrical energy to the key. System according to claim 1 or 5, characterized in that the key and the power source form a unit. System according to claim 1, characterized in that the transmission of the code of the key and the electrical energy takes place in temporal change. System according to claim 1, characterized in that the bolt (5, 6, 7) is under spring force and the lock (10) releases only as long as electrical energy for driving the bolt (5, 6, 7) is present. System according to claim 1, characterized in that the code memory device (8) is provided with a readable log memory.

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