DE102017209937A1 - System and method for non-violent opening of a door by the fire department - Google Patents

Abstract

The invention relates to a system (10) for the non-violent opening of a door (12) by auxiliary forces. The system (10) has an evaluation unit (26). The evaluation unit (26) can receive a first signal, which is sent by a hazard warning system (18). The evaluation unit (26) can also receive a second signal, which is sent by an identification unit (30). If the evaluation unit (26) has the first signal and the second signal, the evaluation unit (26) can unlock a controllable lock (34) for the door (12).

Description

Technical area

The invention relates to the provision of a system for non-violent opening of a door by assistive forces. The invention further relates to the provision of a method for non-violent opening of a door by the assisting forces.

State of the art

In case of fire, auxiliary forces, in particular the fire brigade, can be enabled by firefighters key depots of non-violent access to buildings. Such fire department key depots are arranged, for example, in columns outside the relevant building or in wall boxes. The fire department key depot has an outer door and an inner door. In the event of a fire alarm in the relevant building, the outer door is unlocked by a hazard alarm system, in particular a fire alarm control panel, in particular by electrical means or in an openable state. The inner door is opened by a key from the fire department on site. Behind this inner door are the building keys, for example, the key for the front door to the building, deposited. Typically, the control of the outer door is performed by means of an adapter. The adapter also controls a sabotage loop and whether the access or opening media to be stored in the fire department key deposit, in particular keys for the access doors to buildings, are actually present in the fire department key deposit. Among other things, it can be ensured through the inner door that no unauthorized person reaches the building key during maintenance work. It is known to install an activation element in the vicinity of the fire department key deposit, with which the fire department can trigger the alarm system, if it was not triggered by the fire. This also opens the outer door of the fire department key depot.

A disadvantage is a fire department key deposit represents an additional risk increase, which must be displayed to the property insurer. Furthermore, the fire brigade must take over the insurance responsibility for the keys from the time the keys are deposited in the fire department key depot in case of emergency. Furthermore, a Feuerwehrschlüsseldepot is usually designed as a metallic body, which can lead to mounting problems, for example in Dämmfassaden. Such a metal body also provides a cold bridge. Due to weather conditions, it can happen that doors or locks in or on the fire department key deposit or freeze. The fire department is adversely affected by the opening of the inner door time. If the key to the inner door is lost, the locks must be changed or replaced from all fire department key depots in a county or city. The integration of electronic components such as transponders and novel displays in common fire department key depots can be associated with problems. The disadvantage of fire department key depots or the outer doors can be damaged by vandalism. This also applies to the also unlocked by locks unlock elements. Maintenance work requires an appointment between technicians and fire department, as technicians have no access to the interior of the fire department key deposit.

It is therefore an object of the invention to provide a system in which the non-violent opening of doors by the assisting forces can be done reliably and with minimal effort. It is a further object of the invention to provide a fast and reliable method for non-violent opening of doors by the assisting forces.

The object is achieved by a system according to claim 1. The features of the method according to the invention are specified in claim 13. Advantageous embodiments will be apparent from the respective dependent claims.

Disclosure of the invention

1. a. Eine ansteuerbare Verriegelung für die Tür;
2. b. eine Gefahrenmeldeanlage;
3. c. eine Auswerteeinheit;
4. d. eine Identifikationseinheit.

The system according to the invention for non-violently opening a door by assisting forces has the following components:

1. a. A controllable lock for the door;
2. b. a hazard alarm system;
3. c. an evaluation unit;
4. d. an identification unit.

In this case, the evaluation unit can receive a first signal which can be sent by the hazard alarm system. In addition, the evaluation unit can receive a second signal, which can be sent by the identification unit. The evaluation unit is designed to unlock the electrically activatable latch when the first signal and the second signal are present. The evaluation unit is designed such that the transmission of the second signal can occur before or preferably during or particularly preferably after the transmission of the first signal.

Assistive forces, in particular the fire brigade, can advantageously enter the building directly when the first signal is present in the evaluation unit when they identify themselves at the identification unit. There does not have to be a door in one Fire department key deposit more open to get to the key to open the door suitable. This will avoid delays.

By using commercially available transponders, the cost of expensive keys can be saved. Also, the bureaucratic effort for applying for a lock or a closure for a fire department key deposit including the process for release by the respective fire department can be omitted in advance.

The components of the system can be operated as much as possible in the building itself, rather than outside the building, which increases the reliability of the system. Furthermore, the access logic is clearly regulated by an "And link". Only when the first signal of the alarm system and the second signal of the identification unit are present, the door is opened. In addition, no keys need to be stored in front of the building, which also reduces the risks of abuse and insurance costs.

The system according to the invention can be connected in a simple manner to an access control located in the building in order to enable a documentation of the fire department's access activities. Furthermore, the system according to the invention can be easily combined with existing fire department key depots and / or operated in parallel to these fire department key depots, as long as it is ensured that the fire department can identify with the identification unit. The assembly of the system according to the invention is less expensive due to the smaller volume and the components of the system cheaper than in known fire department key depots.

The transmission of the signals can be done by cable on optical (fiber optic) or in particular electrical ways and / or wirelessly via a radio link. The lock can be controlled mechanically, optically or in particular electrically via a cable and / or wirelessly.

The evaluation unit can have a universal connection to the hazard detection systems, in particular fire alarm systems, from different manufacturers. Furthermore, the evaluation unit can have connections for an electromechanical lock or closure device, in particular in the form of a motor lock, a reading device and / or direct and / or indirect signal connections to a transmission device, which are typically used in hazard detection systems. In the case of an existing connection for a direct and / or indirect signal connection to a transmission device, a feedback signal of the transmission device can be evaluated against ground or the operating voltage of the evaluation unit.

The identification unit may have an indication at which the respective status of the door such as "access free" or "access blocked" can be displayed. For quick identification of the identification unit, it can have a conspicuous optical and / or acoustic marking in the event of a fire, for example by flashing or a beeping sound, and installed in the vicinity of the door. Due to the small required volume of the identification unit, it can be easily integrated into other components such as bell systems or intercom systems.

The identification unit may have a non-violently openable housing or a housing, which is monitored against sabotage or transmitted in sabotage attempts a message to the fire department and / or other persons. The identification unit can be protected against environmental influences, in particular according to the standard 2105 for fire department key depots of VdS Schadenverhütung GmbH.

Alternatively or additionally, the identification unit may have a modular concept, so that an adaptation to various built-in systems and bell systems or intercom systems is made possible. Alternatively or additionally, the identification unit may be designed such that it allows mounting in a freestanding column. The identification unit may be configured to identify various radio frequency identification (RFID) media, such as MIFARE transponders. Alternatively or additionally, it may be designed such that it receives data via a wireless local area network (WLAN) and / or via near field communication (NFC) and / or via Bluetooth or infrared signals, in particular an Infrared Data Association (IrDA) interface , can exchange.

The identification unit can be made more compact and better protected than a fire department key depot, in particular a fire department key depot, which is opened mechanically via keys and locks.

In particular, the door can be designed as an access door or entrance door to a building. In particular, an elevator emergency service can be given the opportunity to make an identification at the identification unit. The building access door can then be opened non-violently by the elevator emergency service in the evaluation unit when the first signal and the second signal are present.

In an advantageous embodiment, the system has a transmission device. Advantageously, a transmission device, which can send signals via a cable or wirelessly from the building, is an easy way to inform the fire department of the fire. In this case, the transmission device can receive the signal of the hazard alarm system. In particular, it may be designed to transmit a response signal to the security alarm system for confirmation. The hazard warning system can be designed to send the first signal to the evaluation unit only if it has received the response signal of the transmission device. The first signal is thus triggered in this case when the transmission device has sent a message for fire alarm to the fire department.

Alternatively or additionally, the hazard warning system can be designed such that it can send a signal to the evaluation unit that there is a fire without waiting for a response signal of the transmission device.

In an advantageous embodiment of the system, the identification unit is designed as a lock and / or card reader. The system may then further comprise a key appropriate to the lock or a card readable by the card reader. Advantageously, this two simple ways are given to identify authorized persons such as the fire department. In case of loss of a card by the fire brigade, it can be easily blocked and replaced with a new card. Identification without contact by assistive powers, in particular the fire brigade, with the identification unit is possible, in particular by a card reader such as a chip card reader and an associated card.

In an advantageous embodiment of the system, the controllable locking of the system can be unlocked by a further identification unit of the system and the door can be opened non-violently. Advantageously, the further identification unit can be used in addition to the above-mentioned identification unit for everyday use outside a fire service, which can send a signal to the controllable lock and / or the evaluation, so that the door is non-violently openable. The further identification unit may be a signal evaluation unit such as a card reader and / or a lock. The evaluation unit can thus be configured to receive signals of the further identification unit and to unlock the latch as a result of these signals, even if neither the first signal nor the second signal is present at the evaluation unit.

The further identification unit can be designed in the form of the identification unit. In this case, supportive personnel such as the fire brigade can identify themselves in case of fire and other persons in normal operation outside a fire situation at the same identification unit.

In an advantageous embodiment of the system, the evaluation unit can be supplied with power without interruption. Alternatively or additionally, the evaluation unit has a connection possibility to a burglar alarm system. For this purpose, they can each have suitable connections. The evaluation unit can be designed such that it can be controlled by the burglar alarm system and / or that it controls the burglar alarm system, in particular with a signal or a signal and an acknowledgment signal. Alternatively or additionally, the evaluation unit may have options, for example a suitable connection for exchanging data with other electronic devices. This concerns in particular fire brigade display tableaus or Lageplantableaus.

For uninterruptible power supply, the evaluation unit may have a connection to an existing security alarm system, in particular a burglar alarm system and / or a separate mains charger, in particular one according to DIN EN 54-4 certified mains charger. As a result, the control electronics of the evaluation unit and optionally other components of the system can be supplied with current or voltage. Advantageously, the operation of the evaluation unit is ensured by decoupling of other power sources by an uninterruptible power supply. Alternatively or additionally, the evaluation unit may be designed such that a failure of power supply units or malfunctions of a rechargeable battery is reported to the fire department and / or other persons.

Through a connection to a security alarm system, in particular a burglar alarm system, a sabotage attempt can advantageously be reported in a burglary, for example to the police.

One way to exchange data with other electronic devices allows the connection to other data networks such as an APLIMO system known from the prior art or a VAREX system. As a result, for example, a direct exchange of data between the hazard detection system and the evaluation can be made possible.

Furthermore, the control of the evaluation unit by signals from remote transmitters and / or by other hazard detection systems be enabled. Furthermore, the exchange of data between several evaluation units can be made.

The evaluation unit can have switching contacts which can be used to set off emergency calls or to enable switching functions in the building or in the outdoor facilities of the building. In addition to the main access door (building access door), a building or grounds may have various side access doors for different areas of the building or terrain. These secondary access doors can each be unlocked by signals from area-related hazard detection systems and identification units. In this case, an area-related hazard detection system or an area-related identification unit can send a first or second signal to a region-related evaluation unit, which can then unlock one side access door in each case. The area-related alarm systems can be selectively controlled via switch contacts of a central hazard detection system or evaluation. As a result, the use of special fire department key deposits can be omitted, in which keys for different locks or locking systems are stored in a building secured together.

In an advantageous embodiment of the system, the door has an electromechanical lock or closing device of the system, in particular a motor lock on. Here, the controllable lock is part of the electromechanical lock or closing device. Advantageously, the automatic opening of the door can be effected by an electromechanical lock or closing device.

In an advantageous embodiment of the system, the electromechanical lock or closure device has two drive paths. In this case, the electromechanical lock or closing device can be opened via the one drive path with the further identification unit. It can be opened by the evaluation unit in the presence of the first signal and the second signal via the other control path. In everyday life outside of a fire service operation can then open the door on the one electromechanical lock or closing device in a quick way on the other identification unit without further effort. In a firefighting operation can be ensured by the other Ansteuerweg the opening of the door by authorized persons such as the fire department. It is thus a simple operation in everyday life and operation in case of fire possible. Alternatively or additionally, the system may include a multi-point latch which may be controlled by the electromechanical latch or closer. The operating voltage can be in the range of 8 volts to 30 volts.

In an advantageous embodiment of the system, the electromechanical lock or closing device can transmit data to the evaluation unit. This may in particular be data that can indicate whether the controllable lock is locked or unlocked and / or there is a fault. The evaluation unit can then be designed to pass on as a central data node of the system directly or indirectly a corresponding warning to the fire department and / or other persons.

In a further embodiment of the system, the door has an electronic door fitting of the system, in particular with the electromechanical lock or closing device. Here, the controllable lock is part of the electronic door fitting. The electronic door fitting may have the further identification unit, in particular in the form of an integrated card reader, to open the lock in everyday operation. Alternatively or additionally, the electronic door fitting may have the identification unit, in particular in the form of a card reader, for identification of the fire department in case of fire. The electronic door fitting may have a mortise lock. The mortise lock can form the further identification unit. The mortise lock can be designed such that it can control multiple locks. The operating voltage of the electronic door fitting can be between 8 volts to 30 volts. The electronic door fitting can be designed such that it can be supplied by emergency power.

The electronic door fitting can have two drive paths. About the one Ansteuerweg the electronic door fitting can be opened with the other identification unit. It can be opened by the evaluation unit in the presence of the first signal and the second signal via the other drive path. The electronic door fitting may be configured such that it can send data to the evaluation unit, for example, whether the controllable lock is locked or unlocked.

In an advantageous embodiment of the system, the controllable locking is self-locking. By a selbstverriegelnd trained locking the automatic closing of the door can be effected after the opening. The self-locking lock may be formed as part of a self-locking panic lock. The self-locking panic lock can be used as part of an electronic Door fitting may be formed, which may have a reader field and a mortise lock.

In an advantageous embodiment, the system has an activation element which is designed to send a third signal to the evaluation unit and / or directly or indirectly to send a third signal to the hazard detection system. The evaluation unit may be designed to unlock the triggerable lock in the presence of the third signal and the second signal. Alternatively or additionally, the activation element, for example, send a signal directly or indirectly via other electronic components to the hazard detection system. The alarm system can then transmit the first signal to the evaluation unit. Then the door can be opened by the fire department if the first signal and the second signal are present. The hazard alarm system can send a signal to the transmission device so that it can send a fire message to the fire department. Advantageously, the door can be opened thereby, if the connection is interrupted by fire detectors for security alarm system. The unlocking element may, for example, have another card reader or another lock. It can also have a further identification means for the identification unit, such as a further card for the card reader used as identification unit or a further key for the lock used as identification unit.

In an advantageous embodiment, the door is designed as part of a fire alarm peripheral device, in particular as part of a fire department information center. In such a fire brigade information center fire brigade display panels and fire service panels can be stored. Fire brigade display panels can indicate which detector zones are installed in which area of the building. Fire department control panels can be used to control hazard detection systems, in particular fire alarm systems. The fire brigade information center can be secured by a housing with a door. This door can be designed such that it can be opened by a first signal of the hazard alarm system and a second signal of the identification unit.

Among other things, in the case of maintenance of the fire brigade information center, the danger reporting system or fire alarm center can send a first signal to the evaluation unit that the fire brigade information center is to be maintained. This can be done, for example, via a code that an authorized person enters at the hazard detection system. Then, the authorized person can identify himself at the identification unit, which sends the second signal to the evaluation unit, which unlocks the door of the housing. Also, the fire department can be easily opened by the fire department in case of fire by the danger reporting system sends a first signal to the evaluation and the identification unit sends a second signal to the evaluation after identification of the fire department, whereupon this unlocks the housing door by a signal.

The invention further relates to a door with a previously described system. The door is preferably in the form of a building access door and / or a secondary access door.

In a method for non-violent opening of a door, an evaluation unit receives a first signal. This signal is transmitted by a hazard alarm system. In addition, the evaluation unit receives a second signal. This is transmitted by an identification unit. The evaluation unit unlocks an electrically controllable lock for this door after having received the first signal and the second signal. Assistive forces, in particular the fire brigade, can advantageously open the door without further expenditure of time during or after transmission of the first signal from the security alarm system if they identify themselves at the identification unit. Among other things, by opening a building access door in this way, they can quickly enter a building and / or open the door of a fire department information center in a time-saving manner.

In an advantageous embodiment of the method, a transmission device receives the signal of the hazard detection system. In particular, it sends a confirmation signal to the hazard warning system for confirmation. Advantageously, the fire brigade can be quickly informed of the fire by a transmission device. The security alarm system can then receive confirmation from the transmission device that the fire brigade has been notified.

list of figures

Further features and advantages of the invention will become apparent from the following detailed description of several embodiments of the invention, from the claims and with reference to the figures of the drawing showing essential to the invention details. The various features may be implemented individually for themselves or for a plurality of combinations in variants of the invention. The features shown in the drawing are shown such that the features of the invention can be made clearly visible.

• 1 eine schematische Darstellung eines Systems zum gewaltfreien Öffnen einer Tür durch die Feuerwehr; und
• 2 eine schematische Darstellung des Verfahrens zum gewaltfreien Öffnen einer Tür durch die Feuerwehr.

In the drawing show:

• 1 a schematic representation of a system for non-violent opening of a door by the fire department; and
• 2 a schematic representation of the method for non-violent opening a door by the fire department.

Embodiments of the invention

In 1 is a schematic representation of a system 10 for non-violent opening of a door twelve by helping forces, especially the fire department, shown. In a building is a fire alarm 14 via a signal connection 16 with a hazard alarm system 18 connected to trigger a fire alarm. The signal connection 16 This can be designed, for example, as an electrical cable, optically or wirelessly as a radio link. The danger alarm system 18 is through a signal connection 20 with a transmission device 22 connected. The danger alarm system 18 can the information of the fire alarm via this signal connection 20 to the transmission device 22 pass on. The transmission device 22 can then be triggered and have an in 1 not shown external connection forward the fire alarm to the fire department. The external connection can again be embodied inter alia in the form of a cable or in the form of a wireless radio connection. The transmission device 22 can optionally via the signal connection 20 a feedback to the alarm system 18 give that the fire department was notified of the fire alarm.

The danger alarm system 18 is via a signal connection 24 with an evaluation unit 26 connected. Through this signal connection 24 can the danger alarm system 18 to the evaluation unit 26 signal that the transmission equipment 22 was triggered. The evaluation unit 26 can save and / or output this information. The evaluation unit 26 is via a signal connection 28 with an identification unit 30 connected. Furthermore, the evaluation unit 26 via a signal connection 32 with a controllable lock 34 the door twelve connected. The controllable lock 34 may be mechanically, optically or in particular electrically, for example via a cable and / or wireless, controllable. The door twelve has an electromechanical lock or closing device 36 on. The controllable lock 34 is as part of this electromechanical lock or closure device 36 educated.

The fire department can be on site with an identification device at the identification unit 30 identify, for example with a key or identification card. The identification unit 30 can through the signal connection 28 a corresponding signal to the evaluation unit 26 forward that the fire department has identified.

If in the evaluation unit 26 both the information is present that the hazard detection system 18 the feedback of the transmission device 22 has signaled as well that the fire department is at the identification unit 30 It can be identified by the signal connection 32 a signal to the controllable lock 34 send. This "and linking" of the information of the feedback of the transmission device 22 and the identification of the fire department, their evaluation in the evaluation unit 26 is done in 1 by an "&" symbol in the evaluation unit 26 shown. The controllable lock 34 can by the signal of the evaluation unit 26 to the controllable lock 34 be unlocked. This is the door twelve non-violently openable, especially the access door to a building.

In addition, the controllable lock 34 for opening the door outside a fire service using a signal connection 40 with another identification unit 42 connected. When a person joins the further identification unit 42 identifies, forwards the further identification unit 42 a signal to the controllable lock 34 , whereby this is unlocked and the door is openable. Alternatively or additionally, the further identification unit may be 42 for further control of the evaluation unit 26 be formed to the controllable locking 34 to control indirectly.

The evaluation unit 26 is via a signal connection 44 with a release element 46 connected. If the connection of the fire alarm 14 to the danger warning system 18 is interrupted, can from the activation element 46 a signal to the evaluation unit 26 which are sent in the evaluation unit 26 can be stored. When the fire brigade or other assisting forces join the identification unit 30 identify, the evaluation unit 26 a signal to the controllable lock 34 send, which unlocks it.

In 2 is schematically a method 100 for non-violent opening of a door twelve presented by the fire department, the following in a synopsis with the system 10 according to 1 is explained. In a first step 102 the fire detector triggers 14 via the signal connection 16 in the hazard alarm system 18 a fire alarm. In a second step 104 gives the danger alarm system 18 the signal of the fire alarm via the signal connection 20 to the transmission device 22 further. This is triggered by this and transmits an external fire alarm message to the fire brigade via an external signal connection. In addition, the transmission equipment 22 in a third step 106 via the signal connection 20 as a feedback signal to the alarm system 18 that it was triggered. In a fourth step 108 transmits the alarm system 18 via the signal connection 24 the first signal to the evaluation unit 26 in that the transmission device 22 was triggered. This information can be in the evaluation unit 26 get saved. The fire department can be in a fifth step 110 at the identification unit 30 identify. The corresponding second signal is via the signal connection 28 from the identification unit 30 to the evaluation unit 26 directed. This information can also be provided by the evaluation unit 26 get saved. The step 110 can before, during or after the steps 106 . 108 respectively.

The evaluation unit 26 Now the information is available that the transmission unit 22 was triggered and that the fire department from the identification unit 30 was identified. Then the evaluation unit sends 26 in a sixth step 112 via the signal connection 32 a signal to the controllable lock 34 , which is unlocked by this signal. This is the door twelve , which by the controllable lock 34 was locked, non-violently openable. It can by the electromechanical lock or closing device 36 be opened.

Taking a synopsis of all the figures of the drawing, the invention in summary relates to a system 10 for non-violent opening of a door twelve by helping forces. The system 10 has an evaluation unit 26 on. The evaluation unit 26 may receive a first signal from a hazard alarm system 18 is sent. The evaluation unit 26 may also receive a second signal from an identification unit 30 is sent. If the evaluation unit 30 the first signal and the second signal are present, the evaluation unit 26 a controllable lock 34 for the door twelve Unlock.

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 non-patent literature

• DIN EN 54-4 [0025]

Claims (14)

A system (10) for non-violently opening a door (12) by assisting forces, the system (10) comprising: a. A controllable lock (34) for the door; b. a hazard warning system (18); c. an evaluation unit (26); d. an identification unit (30); wherein the evaluation unit (26) can receive a first signal which can be transmitted by the hazard warning system (18), and the evaluation unit (26) can receive a second signal which can be transmitted by the identification unit (30), and the evaluation unit ( 26) is designed to unlock the controllable lock (34) in the presence of the first signal and the second signal. System after Claim 1 with a transmission device (22), wherein the transmission device (22) can receive the signal of the danger detection system (18) and, in particular, can transmit a response signal to the hazard warning system (18) for confirmation. System according to one of the preceding claims, wherein the identification unit (30) is designed as a lock and / or as a card reader. System according to one of the preceding claims, wherein by a further identification unit (42) the controllable lock (34) can be unlocked and the door (12) is non-violently openable. System according to one of the preceding claims, wherein the evaluation unit (26) can be supplied without interruption with power and / or connectivity to a hazard alarm system (18), in particular a burglary alarm system, and / or has a means for exchanging data with other electronic devices especially with fire brigade display panels or plant layout panels. A system according to any one of the preceding claims, wherein the system (10) comprises an electromechanical latching or closing device (36), the electromechanical latching or closing device (36) comprising the controllable latch (34). System after Claim 6 combined with Claim 4 wherein the electromechanical lock or closing device (36) has at least two drive paths and can be opened via the one Ansteuerweg with the further identification unit (42) and the other Ansteuerweg by the evaluation unit (26) in the presence of the first signal and the second signal can be opened. System according to one of Claims 6 or 7 , wherein the electromechanical lock or closing device (36) can transmit data to the evaluation unit (26), in particular data that can indicate whether the controllable lock (34) is locked or unlocked and / or there is a fault. System according to one of the preceding claims, wherein the system (10) comprises an electronic door fitting, in particular with an electromechanical lock or closing device (36), wherein the electronic door fitting has the controllable lock (34). System according to one of the preceding claims, wherein the controllable lock (34) is self-locking. System according to one of the preceding claims with an activation element (46) which can send a third signal to the evaluation unit (26) and / or directly or indirectly a third signal to the transmission device (22). System according to one of the preceding claims, wherein the door (12) is formed as part of a fire alarm peripheral, in particular as part of a fire department information center. Method for the non-violent opening of a door (12), in particular by a system according to one of Claims 1 to twelve , wherein an evaluation unit (26) receives a first signal, which is transmitted from a hazard warning system (18), and the evaluation unit (26) receives a second signal, which is transmitted by an identification unit (30), and the evaluation unit (26) actuable latch (34) for that door (12) unlocked after having received the first signal and the second signal. Method according to Claim 13 , wherein a transmission device (22) receives the signal of the hazard detection system (18) and in particular for confirmation transmits a response signal to the hazard warning system (18).

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