EP2387010A1 - Evacuation door securing device - Google Patents

Abstract

The device has a door contact (23) and a lock contact (25) monitoring a closing condition of a door leaf. A memory unit comprises an intermediate memory (17) and a main memory (18) i.e. flash-memory. The intermediate memory stores image data set that is recorded by an optical recording unit (16) during determined time interval. The main memory is designed for permanent storage of image data that is stored in the intermediate memory. The memory unit comprises a control unit (19) for controlling transmission of the image data into the main memory in dependent upon triggering results. An independent claim is also included for a method for controlling an escape door locking device.

Description

The invention relates to an escape door security device, comprising a monitoring device for monitoring the closed state of an escape door, a trip unit whose actuation directly or indirectly allows the escape door to open, an optical recording device designed to receive image data of at least one surrounding area of the escape door control device, and a storage device which stores the image data taken by the camera module.

Passage doors are passageways and / or exit doors in escape routes, for example buildings or demarcated terrain areas. Escape doors are generally characterized by the fact that they must be openable in an emergency, especially from the inside, to allow a quick and hinderungsfreien passage. The escape door must thus be unlockable and openable without additional means, such as keys, code cards, etc. In particular, from the outside, especially located in the outer area of buildings, escape doors, however, often not without separate unlocking, such as keys, key cards, code inputs, etc. open to be able to regulate access to a building through an escape door.

Because escape doors always have to be openable from at least one side, emergency exit doors often present a security gap, for example in the building security. In order to counteract this weak point, so-called escape door security devices are known in the art which serve to secure an escape door while maintaining the security Basic function of the escape door (manual opening ability or unlocking in an emergency, at least from the inside in the direction of escape) are formed. Such escape door security devices On the one hand to ensure that the potential operator of the escape door on the escape door function and any unauthorized use, if possible before an attempt to open, is pointed. At the same time to be increased by generic escape door security systems, the inhibition threshold with regard to manipulative and / or unauthorized attempts to open the escape door.

A generic escape door security device initially has a monitoring device which is designed to monitor the closed state of an escape door. The monitoring device can thus determine whether the escape door is present in the closed or open state. The monitoring device can also be designed in such a way that it already detects the attempt to open the escape door without actually being opened.

Another essential element of a generic escape door security device is a trip unit whose operation directly or indirectly allows the opening of the escape door. The usually present in the closed state escape door thus has at least on its inside such a trip unit. The trip unit can be operated by a panic, for example, in case of emergency, which opens the escape door. Typical tripping units are, for example, door handles, panic bars or / bars, emergency buttons, etc. Furthermore, a control unit is provided which is designed to control the individual elements of the escape door control device.

Generic escape door security devices can be designed as a coherent component, for example in the form of an emergency call terminal. The essential components are thus arranged in this embodiment in a common housing or together form a common structural unit. Alternatively, a modular embodiment of the escape door security device is possible in which individual components, such as monitoring device, trip unit, optical recording device, can be mounted as independent subunits and cooperate with each other in the form of an escape door security system as an overall device. Unless hereinafter explicitly distinguished between the two structural variants, both alternative embodiments are included in each case.

To counteract the improper opening of escape doors, escape door security devices are also known, upon actuation of which an optical and / or acoustic alarm is triggered with a corresponding alarm device, ideally already before an opening of the escape door. This makes it possible, on the one hand, to make a clear statement to the user that the door is a specially secured escape door. On the other hand, the triggering of acoustic and / or optical sequence functions often discourages unauthorized users from opening or improperly using the escape door.

In practice, however, it can be seen that the integration of optical and / or acoustic alarms, while reducing the rate of abuse, still does not reduce it to an acceptable minimum. It was therefore proposed to provide generic escape door security devices in addition with an optical recording component that records an image recording of an unauthorized user in an image memory in case of alarm. Such escape door security device is for example from the DE 199 43 041 A1 known. The optical recording device is designed and arranged such that it can record image data of at least one surrounding area of the escape door control device. The optical recording device is used in particular to visually detect the operator of the escape door or the operator of the escape door security device and in this way to be able to identify in particular in the event of abuse. For this purpose, the optical recording device is arranged, for example, in a housing of the escape door securing device and positioned such that the person standing in front of the escape door can be detected by the optical recording device at least in the facial region. The optical recording device is, in particular, a camera module which comprises, for example, a video camera, in particular a circuit board camera or CCD camera. It goes without saying that the optical recording medium is designed with respect to its positioning and the recording area such that operators of different sizes can be equally detected by the optical recording device, in particular its face. The optical recording device is furthermore preferably arranged concealed on the escape door securing device in order not to be immediately perceived by the potential user. Finally, the escape door control device comprises a memory unit which stores the image data recorded by the optical recording device and enables later evaluation of the stored data, for example for identification of an unauthorized user.

However, it has been shown that this system can be circumvented by simple manipulative measures, for example, by the opening operation previous turning off the video camera, gluing and / or destroying the lens of the camera, etc. Often, the additional security measure by the optical recording device runs into the void ,

It is therefore an object of the invention to provide a generic escape door security device, on the one hand allows identification of a user of an escape door and at the same time is more robust against manipulation attempts. In addition, the escape door security device should be as versatile as possible, easy and inexpensive to implement and reliable in operation.

The object is achieved with an escape door security device and with a method for controlling an escape door security device according to the independent claims. Preferred developments are specified in the dependent claims.

According to the invention, it is provided that the memory device of the escape door security device comprises a buffer and a main memory, the buffer storing and continuously updating the image data recorded by the optical recording device during a predetermined time interval and the main memory being designed for the permanent storage of image data stored in the buffer. Moreover, it is provided according to the invention that a control unit is provided which controls the transmission of the image data stored in the buffer memory into the main memory as a function of a triggering event.

An essential element of the memory device is thus the buffer. This is just not designed in such a way that it stores the image data supplied by the optical recording medium to the exhaustion of its storage capacity and then stops the storage due to lack of memory. Rather, the buffer is designed in such a way that the temporally oldest image data are respectively overwritten by the image data currently supplied by the optical recording device. In other words, the buffer is a so-called rolling buffer, which is described again and again in defined cycles. A cycle can be time-dependent (ie in the rolling memory is always a certain time interval, for example, the last three past minutes recorded) and / or also dependent on the amount of data (in the buffer is a fixed storage capacity available, which defines the period of the past just stored time interval). It is important that the rolling buffer is updated in each case with current image data from the optical recording device and refreshes the respectively most recent image data with current image data from the optical recording device. Consequently, it should also be understood that the oldest picture data in the buffer memory is always replaced by the current picture data recorded by the optical recording device.

The length of the specified time interval in which the image data stored in the buffer is replaced by updated image data recorded by the optical recording device depends on various factors. On the one hand, the storage capacity of the cache is essential. The higher the storage capacity of the buffer, the longer can be the total time interval stored in the buffer. Another influencing variable is, moreover, the resolution of the image data recorded by the optical recording device, in which case the quality of the image data must be at least as good that later identification of operators by means of the recorded image is possible. Another factor is the recording frequency with which the optical recording device records image data.

For safety reasons, it is preferred that the optical recording device is designed in such a way that it continuously records the surrounding area detected by it and forwards the corresponding image data to the intermediate memory. In this way a continuous monitoring is possible. In order to reduce the energy consumption of the escape door monitoring device according to the invention, which may be advantageous, for example, in variants with autonomous power supply, for example via a rechargeable battery, with integrated solar panel, etc., the escape door security device according to the invention can also have a timer function via which, for example, time-of-day-dependent recording times are predetermined can. Alternatively, for example, a control of the escape door monitoring device via a control center or a central higher-level institution may be provided.

Unlike the buffer, the main memory is provided for the permanent storage of image data. In this context, permanent storage means storage in such a way that the data is stored on the main memory and remains at least until the data is read from the main memory and / or actively deleted by appropriately authorized persons. In addition, the invention is preferred the use of main storage media, which can ensure the data storage independent of a continuous power supply, so as to prevent data loss of the image data on the main memory, for example in the event of a power failure. The main memory is thus preferably a persistent data memory, for example a semiconductor memory in the form of a flash memory. Preferred embodiments comprise a main memory which can be removed from the escape door security device by authorized personnel and can be read out elsewhere, for example at a computer, etc. This may be, for example, a micro SD card, etc.

A central element of the invention lies in the special interaction of the optical recording device, the buffer and the main memory. For this purpose, a correspondingly suitable control unit is provided, which controls the interaction of these three components with each other. The optical recording device delivers current image data to the buffer, for example via a suitable data transmission line. The buffer stores the respective current image data of the optical recording device in time subsequent to a past period or the image data recorded in a past time period. In other words, the buffer ensures the image data availability of a period of time that has lapsed from the respective current image data record. The buffer is connected to the main memory via a corresponding data transmission line and can transfer its current memory content into the main memory. The main memory is preferably designed with respect to its storage capacity substantially larger than the buffer and allows image data permanently or at least for longer periods to store and thus decouple from the continuous updating of the image data in the buffer.

In order to allow later evaluation of recorded image data in the escape door security device according to the invention, the image data stored in the buffer are transferred to the main memory. However, this transfer process does not take place continuously or arbitrarily, but according to the invention is tied to a triggering event. Only this triggering event thus triggers a data transfer of the image data stored in the buffer memory into the main memory, so that only those image data are transferred from the buffer into the main memory which were stored in the buffer before the occurrence of the triggering event. Image data of periods that have not been transferred to main memory due to a triggering event, such as event-free periods and / or authorized inspections, are, however, recorded in the buffer, but not sent to the main memory because they are overwritten again due to the rolling memory principle in the buffer and replaced by updated image data. This ensures that the memory capacity of the main memory is used efficiently and only those recording intervals are in the main memory, which are linked in any way to the triggering event. The sensing, processing and ultimately the triggering of the data transmission takes place at least indirectly via the control unit. As a result, it is possible with the present inventive escape door security device to record the event recorded by the optical recording device before the triggering event and thus to identify, for example, an operator of an escape door. At the same time, it is considerably more difficult to manipulatively circumvent the escape door security device, since time-lagged image data and thus, for example, also the time of the manipulation start and the time period before the manipulation event are stored in the buffer. Overall, the escape door security device according to the invention allows, for example, a particularly efficient identification of persons responsible for a triggering event.

In the context of the invention, a whole series of different trigger events come into consideration, wherein the escape door securing device according to the invention is designed so that it is capable of detecting at least one of the subsequent triggering events. Of course, however, variants are preferred which are designed to detect a plurality of different triggering events. A central component of the escape door security device according to the invention for processing and classifying a triggering event is the control unit. This is according to the invention designed in such a way that it classifies incoming signals as a triggering event and, as a consequence, triggers the transmission of the image data from the intermediate memory into the main memory.

A preferred triggering event is the operation of a emergency button of the escape door security device. Such emergency buttons are known in the art and are often arranged next to corresponding escape doors, often integrated into a so-called emergency exit terminal or emergency terminal, in order to ensure a spatial proximity to the escape door. By pressing the emergency button, the escape door is unlocked. Frequently, an actuation of the emergency button is linked to the triggering of further optical and / or acoustic alarm devices.

Another preferred triggering event is the triggering of a so-called door guard device. Such door guard devices are known in the art and serve to the opening / closing state of an escape door and in particular the position of an actuating element of the escape door, such as a door handle, a panic bar, etc., to monitor. A typical door guard device is, for example, a housing applied to a door leaf, which has to be swung out of the actuation path of the actuation element before opening the door, thereby triggering an alarm. Alternative embodiments of a door guard device, for example, provide a spring-loaded folding lever, which abuts against an actuating element and is pivoted upon actuation of this actuating element. This pivoting triggers also, possibly via a corresponding pre-alarm, a visual and / or audible main alarm.

Another trigger event may be the exceeding of a predetermined and / or adjustable maximum door open time. The control unit is designed in such a way that it can detect the Türoffenzustand via suitable means and determines by means of a timer function, how long the escape door is already open. If a predetermined, ideally adjustable, maximum value is exceeded, the control unit triggers the image data transmission from the intermediate memory into the main memory according to the invention. In a preferred embodiment, it is additionally provided that the maximum door open time is shorter than the specified time interval of the image data stored in the buffer store and recorded by the optical recording device. This ensures that the period before the escape door is opened is also recorded.

Another triggering event may be opening the escape door itself. This embodiment is particularly suitable in areas where only the escape route function of the escape door is used to identify each user of the escape door without gaps. In this triggering event, it is not even necessary to match the maximum door open time and the fixed image data stored in the buffer time interval, as already by the opening of the escape door and regardless of how long the escape door ultimately remains unclosed, recorded in the buffer fixed time interval in the main memory is transferred and, depending on the embodiment, as long as current recorded by the optical recording device image data are stored in the main memory until the door is closed again.

Especially in areas where in addition to the escape route function, the escape door is also used as a regular passage door, the trigger events can be selected so that only the abusive attempts to attempt to be recorded in main memory. For example, the escape door security device can be provided with an access control unit via which the authorized user can gain authorized access, for example with a suitable key, an admission card, an identification transponder, code entry, biometric entry, etc. If a (violent) opening occurs the escape door without prior identification, the control unit classifies this attempted visit as a triggering event and causes a data transfer of the currently located in the buffer image data in the main memory. Alternatively or additionally, it is also possible that a wrong operation of the access control unit has the image data transfer from the buffer into the main memory result or is a triggering event. In this embodiment, it is thus not even required that an opening of the escape door was tried directly. Already the misuse of the access control unit is a triggering event.

Other particularly important tripping events may be, for example, in detected attempts at manipulation, which are recognized by the control unit, for example via suitable sensors, and classified as a tripping event. Concretely, for example, suitable sensors may be present which report to the control unit whether shaking at the escape door or attempting another violent opening. For this purpose, for example corresponding position sensors, force sensors, light barriers, etc., may be present. The masking or otherwise manipulating the optical recording device, for example the scratching and / or repainting of the optical recording device or a lens of the optical recording device, can also represent a triggering event. Thus, the masking of the recording device is usually characterized by a very rapid and sustained darkening of the image data recorded by the optical recording device. In this embodiment, the control unit is thus able to detect this characteristic obscuration and treat it as a triggering event. Alternatively or additionally, the control unit may further be configured such that it continuously compares the most recent image data stored in the buffer with the respective temporally preceding image data, which serves as a reference image, and thereby identifies differences such as arise, for example, when the optical recording means is displaced. In order to exclude normal movement of persons, it may further be provided that the control unit in this embodiment detects the difference (s) beyond a time limit. If the control unit registers such a change (depending on the embodiment over a certain period of time), in a preferred embodiment this too may represent a triggering event.

In particular, in security-relevant areas, it can also be provided that the execution of certain maintenance work on the escape door security device is a triggering event and triggers the image data transfer from the buffer into the main memory. The detection of maintenance work can be done for example by mechanical means. For example, sensors and / or contacts may be present which detect the opening of a housing of the escape door security device and report it to the control unit. Similarly, the installation and / or removal of individual components of the escape door security device can be detected accordingly and reported to the control unit. Alternatively or additionally, maintenance work can be detected via an intervention in the electrical supply of the escape door security device and registered by the control unit, as is the case, for example, in the event of a fuse failure, a battery change, etc. Finally, the control unit can also be designed in such a way that it recognizes systemic interventions in the escape door security device and classifies it as a triggering event. Such systemic interventions may be, for example, the execution of a programming change, such as access permissions, logging intervals, etc., the resetting of control parameters, the modification of operating parameters, such as maximum opening times, timer function, etc.

It goes without saying that such escape door security devices according to the invention are preferred, whose control unit is designed in such a way that several of the above situations represent a triggering event. The more triggering events can be detected by the control unit, the more seamlessly the image data documentation of exceptional situations around the escape door succeeds.

A preferred embodiment of the escape door control device according to the invention provides that the control unit is designed in such a way that it additionally stores the image data recorded in the main memory in a defined time interval after the triggering event by the optical recording device as a function of the triggering event. In addition to the rolling principle of the buffer set forth above, this embodiment is thus designed in such a way that in the main memory, depending on the triggering of a triggering event, the image data lying after the triggering event are added to the data set transferred from the buffer to the main memory. In this way, it is possible for a later evaluation of the image data stored in the main memory, for example, to determine whether after the triggering of a trigger event, the escape door really opened or not and / or if and by whom the escape door has been passed. In this way, it is thus possible, for example, to better distinguish between attempted manipulation attempts actually made.

Additionally or alternatively, it is also possible to form the control unit in such a way that it also stores the image data recorded between the beginning of the triggering event and the end of the triggering event and recorded by the optical recording device in the main memory. In this way, the period in which the triggering event is active is thus also recorded. This makes it possible, for example, to clear up the events that occurred during the triggering event by reading out the main memory. In a further preferred embodiment, it may be provided that the transmission of image data during a triggering event is limited in time and / or in terms of the available memory capacity in the main memory and / or in terms of the data volume of the image data in order to prevent premature full utilization of the main memory.

In order to facilitate the temporal classification of the image data stored in the main memory, the control unit is preferably designed in such a way that it identifies the data which is transferred from the intermediate memory into the main memory as a function of a triggering event with a date and the respective recording time. It may further be provided that the control unit in each case adds an identification code of the respective escape door security device to the corresponding image data record transmitted to the main memory. This is particularly advantageous when the image data of several escape door security devices are evaluated together in order to allow a local assignment of the respective image data material. A further preferred embodiment provides that the control unit is designed in such a way that it assigns the respective triggering event to the data transferred from the buffer to the main memory. In this way, when evaluating the image data present in the main memory, it is thus possible to arrange these, for example, according to different triggering events and / or safety relevances. This also facilitates efficient evaluation of the image data stored in the main memory.

Preferred refinements of the escape door security unit according to the invention also provide that the control unit evaluates the image data recorded by the optical recording device with regard to further safety-relevant aspects during ongoing operation. For example, it is possible within the scope of the invention to design the control unit in such a way that it evaluates the image data recorded by the optical recording device for fire / smoke detection and / or light monitoring and / or obstacle detection and / or person control. Under fire detection or smoke detection is the ability to understand a fire situation, for example, due to the associated smoke development to identify and preferably also to signal. A fire detection is advantageous in that, in an emergency occurring under certain circumstances smoke of the escape route, the use of this escape route can make impossible. In networked escape route guidance systems in particular, it can therefore be provided that the knowledge gained via the fire detection is taken into account in the rescue route line and that people evacuated are accordingly guided around smoky areas. Light monitoring means checking, for example, whether corridor lighting is switched on or off during the night. This function can be very useful, especially in larger building complexes. The light monitoring can also have a motion detection function, which can be used for example for lighting control. Of course, detected via a motion detection movement also represent a triggering event. An obstacle detection is directed to the control of the extent to which the escape door is freely accessible or accessible, or obstructed by an obstacle, such as goods parked outside the escape door, etc. For this purpose, the control unit is designed, for example, in such a way that it compares the current image data from the optical recording device with a reference image and, when an obstacle is determined, for example, notifies a higher-level monitoring point. After a similar principle, for example, the fire / smoke detection and the light detection can be done.

Person control means, on the one hand, the numerical recording of the number of persons. This can be particularly helpful in emergency situations in that, for example, the determination of how many persons are currently in a building is comparatively simple due to the combination of several escape route devices according to the invention, which is independent of the individual access. On the other hand, a person control in the sense of the invention can be distinguished by the fact that individual individuals can be identified and assigned to an authorization profile, for example. A control unit with person control is thus able to detect, for example, the number of passing through the escape door people and / or determine who passes an escape door. Furthermore, directions of movement of persons can be determined.

For this purpose, according to a further preferred embodiment, the control unit may be designed in such a way that it comprises a biometric recognition device which enables identification of persons on the basis of the image data recorded by the optical recording device. If the biometric recognition device detects an authorized user, for example, the escape door is released for legitimate inspection even outside the escape. In this embodiment, it is possible that even the detection of a user by the detection device also represents a triggering event. Alternatively, the control unit can also be designed in such a way that only the users detected and unidentified by the recognition device initiate the image data transfer from the buffer into the main memory.

Furthermore, within the scope of the invention, the type of image data recording by the optical recording device can vary. It is thus possible, for example, for the optical recording device to record a permanent video stream, with which in particular temporally almost complete image data recording is possible. With regard to the utilization of the storage capacity, in particular of the intermediate memory or the maximum definable time interval, it is however advantageous if the optical recording device is designed in such a way that it records sequences of individual images. Thus, in this embodiment, the optical recording device does not provide a nearly continuous image data stream, but rather several individual images which are clearly separated from one another in terms of time. For example, a typical sequential recording provides 0.5 to 5, especially 1 to 3, frames per second recording.

In order to ensure efficient use of the escape door security device according to the invention, it is necessary that the image data stored in the main memory can also be evaluated. For this it is for example possible that the main memory is designed to be mobile and the escape door security device can be removed for evaluation. Alternatively, however, the escape door security device comprises a fixed main memory and a data transfer means for reading the data from the main memory. Such a data transmission means may, for example, be a suitable interface for connection to a mobile PC, to a mobile storage medium, to a suitable data line, for example as part of a higher-level security system, etc. Depending on the field of application, it may also be desirable that the reading of the data from the main memory without mechanical action on the escape door security device, such as changing a data carrier, the connection and closing of a mobile data storage, etc., is possible. In this case, the invention provides According to a further preferred embodiment, the data transmission means is designed for wireless data transmission.

According to the invention it is also possible to integrate the escape door security device in a higher level security system. In this case, it is provided that the data transmission means is preferably in communication with a higher-level monitoring center and either transfers the image data stored in the main memory directly to the monitoring center or sends a message via a triggering event to the monitoring center or indicates the presence of image data in the main memory. For a particularly efficient handling of the escape door security device according to the invention is possible because the main memory is accessed only if actually data are stored.

Also, the basic structure of the escape door security device according to the invention may vary. In principle, it is possible, for example, for the escape door securing device to be of modular construction and, for example, to be adapted to the individual needs of the installation situation by individual modules, such as a monitoring module, a release module, an optical recording module with biometric recognition function and fire detection function, etc. can. Alternatively, it is also possible that the escape door security device is designed in the form of a structural total unit. Thus, the escape door security device can be, for example, an emergency button terminal, an escape door monitoring terminal, a door guard, an escape door operating element, in particular a panic bar or a door latch, a door fitting, a door latch, a door rosette, etc. For example, embodiments in which the escape door security device is arranged in its entirety in a contiguous housing are ideal. This applies in particular to embodiments in which the housing is a housing a emergency button, a Nottasterterminals, an escape door monitoring terminal, a door guard, a door magnet, a door closer, a Türschließergleitschiene. Alternatively or additionally, the memory device can also form a sub-component or a coherent optical recording module at least together with the control unit, which controls the interaction of the three components of the memory device (optical recording device, buffer and main memory). This can then be integrated into individual components of the escape door security device. Preferred components which are used to accommodate such an optical recording module, in particular door actuators, in particular manually operable, such as a particular panic bar, a door handle, a door rosette, the housing of an optical and / or audible alarm device, such as a siren or a flashing beacon or similar single component typically used in connection with escape doors. Unless expressly stated, the following statements each refer to all of the various structural aspects of the invention.

Preferably, the control unit is further configured in such a way that the length of the time interval stored in the buffer image data and / or the resolution of the image data recorded by the optical recording device and / or the frequency are recorded in the image data of an image sequence and / or maximum amount of data, which can be stored in the main memory per triggering event. This enabled a particularly good adaptation of the escape door control device according to the invention to individual specifications.

Another essential aspect of the invention resides in a method for controlling an escape door control device according to one of the preceding embodiments. Essential aspects of the method according to the invention are the continuous (continuous or sequential) recording of image data by the optical recording device, the storage of image data in the buffer, the overwriting of image data in the buffer after the expiration of a predetermined time interval with updated image data, the transmission of image data from Latch in the main memory after detecting a trigger event and the long-term storage of image data in the main memory to read the main memory. The buffer thus always contains image data of a past time delay. If the entire buffer memory content is thus transferred to the main memory due to a triggering event, an image data sequence lying in the main memory before the triggering event lies in the main memory. Thus, the method according to the invention makes it possible to examine the exact sequence before the triggering event in hindsight and to elucidate manipulation attempts, etc. in this way.

Preferred embodiments of the method according to the invention result in particular when the image data is transferred from the intermediate memory into the main memory together with a time specification and / or the indication of the reason for the release, since this makes the reconstruction of the triggering event even easier in terms of time and causality. It is furthermore preferred if the image data recorded by the optical recording device after the triggering event are stored in the main memory for the image data transmitted by the buffer before the triggering event over a predetermined time interval in particular to have image data available, which is after the triggering event. This is advantageous for the reasons already mentioned above.

Fig. 1a

eine schematische Draufsicht auf eine erste Ausführungsform einer Fluchttürsicherungseinrichtung;

Fig. 1b

eine schematische Draufsicht auf eine erste Ausführungsform einer Fluchttürsicherungseinrichtung;

Fig. 2

ein schematisches Blockschaltbild einer dritten Ausführungsform einer Fluchttürsicherungseinrichtung;

Fig. 3

eine einflügelige Fluchttür mit verschiedenen Ausführungsformen einer Fluchttürsicherungseinrichtung;

Fig. 4

eine zweiflügelige Tür mit verschiedenen Anordnungsmöglichkeiten einer Fluchttürsicherungseinrichtung; und

Fig. 5

eine Verfahrensskizze einer weiteren Ausführungsform einer Fluchttürsteuerungsvorrichtung.

The invention will be explained in more detail below with reference to the embodiments shown in the figures. They show schematically:

Fig. 1a

a schematic plan view of a first embodiment of an escape door security device;

Fig. 1b

a schematic plan view of a first embodiment of an escape door security device;

Fig. 2

a schematic block diagram of a third embodiment of an escape door security device;

Fig. 3

a single-leaf escape door with various embodiments of an escape door security device;

Fig. 4

a two-leaf door with different arrangement options of an escape door security device; and

Fig. 5

a process outline of another embodiment of an escape door control device.

In the embodiments shown below are structurally or functionally the same components or components provided with the same reference numerals.

The FIGS. 1a and 1b relate to two different embodiments of an escape door security device, a emergency button 1 according to Fig. 1a and in a door fitting 2 according to Fig. 1b ,

According to FIG. 1a the emergency button terminal 1 comprises a housing 4, an emergency button 5, a key switch 6, a display panel 7 and a speaker cover 8. The emergency button 5 is further covered by a cover made of plastic cover 9 to the outside, the cover 9 slidably mounted on the housing 4 is. To trigger the Nottasterterminals 1, the cover 9 is pressed, which has a depression of the emergency button 5 result and appropriate emergency measures, such as the release of an escape door and / or the triggering of an optical / acoustic alarm signal, etc., has the consequence. The key switch 6 is used to operate the Nottasterterminals 1 and can be used for example for resetting the Nottasterterminals 1 of an alarm state in a monitoring state. The display panel 7 includes three different colored LEDs 10a, 10b and 10c, each indicating the current switching state of Nottasterterminals 1. Furthermore, the emergency switch terminal 1 comprises the speaker cover 8 and a loudspeaker (FIG FIG. 1a not visible), via the acoustic instructions, for example, from a monitoring center or a stored text, can be output from the emergency terminal 1.

Furthermore, a recording module is present, which is arranged lying substantially behind the housing 4. Only the lens 3 as part of an optical recording device of the recording module is in Fig. 1a played. The lens 3 is arranged in the region of the speaker cover 8 in order to accommodate the lens 3 as inconspicuously as possible from the outside on the emergency terminal 1. The lens 3 is further arranged above the emergency button 5, in order to be able to detect in particular also the field of view of a user pressing the emergency button 5 with the optical recording device. The lens 3 is designed in a wide-angle technique in order to be able to detect a particularly large area located in front of the emergency terminal 1. The components of the recording module which are explained below are, on the other hand, accommodated in the housing 4 of the emergency terminal 1 as a structurally coherent module. In principle, however, it is also possible to construct the functional units (optical recording device, main memory, temporary storage, control unit) of this optical recording module as respective separate subunits and to integrate them in the escape door security device. This applies in particular to installations ex works. Unless an explicit distinction is made in this regard, the statements refer to both design variants.

Alternatively, it is also possible, for example, to accommodate the recording module in the door fitting 2, such as for example FIG. 1b evident. The door fitting 2 is screwed via two screw 11 a, 11 b on a door leaf, not shown. The door fitting 2 essentially comprises a flat and solid sheet 12, which is surrounded by a narrow side wall and thus encloses an interior in cooperation with the door leaf. In this interior is in accordance with the embodiment Fig. 1b the arranged as a single module recording module arranged. Only the lens 3 of the optical recording device of the recording module is placed in a through hole in order to detect the outer surrounding area of the door fitting 2. Furthermore, a key recess 13 is present, as well as a pivotable door handle 14 through which, for example, an opening of the escape door can be achieved. In contrast to the emergency terminal 1 off Fig. 1a is the lens 3 in the embodiment according to FIG. 1b clearly visible from the outside. This is especially useful also to potential users the presence of optical recording device in mind and in this way to increase the inhibition threshold with regard to improper operation of the door handle 14.

Fig. 2 illustrates the conceptual design of the escape door security device using the example of Nottasterterminals 1, wherein the side view in Fig. 2 strongly schematized and not all individual components Fig. 1a considered. For example, the key switch 6 and the speaker 8 are in Fig. 2 for reasons of clarity not specified.

That which is understood as a recording module is for further clarification with the dotted box 15 in FIG Fig. 2 outlined. In contrast, the generic term emergency exit door security device designates the structural and / or functional unit for escape door security, in Fig. 2 Specifically, the emergency terminal 1. In the embodiment according to Fig. 2 the recording module 15 is integrated into the emergency terminal 1 and forms an independent individual component. The recording module 15 comprises, in addition to the optical recording device 16, which also includes the lens 3, the intermediate memory 17 and the main memory 18. Further, a control unit 19 in the recording module 15 is provided in connection with the optical recording device 16, the latch 17 and the Main memory 18 is. The control unit 19 of the recording module 15 is further connected to the Nottasterterminalsteuerung, the essential control functions of Nottasterterminals 1 takes over or in the Nottasterterminalsteuerung incoming signals (for example via an emergency button, a housing opening, etc.) can also be forwarded to the control unit 19. In Fig. 2 Furthermore, the emergency button 5 is visible in a lateral sectional view, wherein the cover has not been drawn.

The individual components of the emergency terminal 1 in Fig. 2 are arranged in the housing 4 of Nottasterterminals 1, which comprises a removable housing cover 21 and a housing base part 22. On the housing base part 22, a housing contact 24 is further arranged, which detects whether the housing 4 is closed or the housing cover 21 is placed on the housing base part 2. The latter is used in particular for the protection against manipulation and, for example, makes it difficult to open the housing 4 of the emergency call terminal 1. In order to detect the closing state of an escape door in communication with the emergency call terminal 1, the emergency call terminal 1 also has a door contact 23 and a locking connection 25. The door contact 23 is designed in such a way that it can determine whether the escape door is open or closed. The locking connection 25 ultimately serves to sense whether the lock of the escape door is in the locked or in the unlocked state.

The interaction of the individual components of Nottasterterminals 1 and in particular the basic operation of the recording module 15 as part of the escape door security device will be based on Fig. 2 be explained in more detail. A core element of the escape door security device or the recording module 15 lies in the staggered or functionally arranged arrangement of the optical recording device 16, the buffer 17 and the main memory 18. The optical recording device 16 is formed in such a way that it continuously image data from the environment the Nottasterterminals 1 records and transmits this image data to the buffer 17. The intermediate memory 17 is structured in such a way that with the current image data coming from the optical recording device 16, the respectively temporally oldest image data in the intermediate memory 17 are overwritten. As a result, in each case a fixed time interval of successively recorded image data is stored in the intermediate memory 17, the image data of this time interval being updated with the image data coming from the optical recording device 16. The buffer 16 is thus based on a rolling storage principle.

The intermediate memory 17 in turn can transmit the image data stored in it to the main memory 18 for permanent storage. Trigger for such a transmission are certain trigger events, which are finally detected by the control unit 19 or classified accordingly, whereupon this triggers an image data transmission from the latch 17 in the main memory 18. A triggering event in the embodiment according to Fig. 2 is, for example, the operation of the emergency button 5, which is determined by the emergency control terminal controller 20 of the control unit 19. Other triggering events are, for example, opening the escape door, which detects the control unit 19 via the door contact 23 (and the emergency terminal control 20), removing the housing cover 21 from the housing base part 22, which can be detected above the housing contact 24 (and the emergency terminal control 20), the Ver - And / or unlocking the escape door, which can be determined via the locking connection 25 (and the Nottasterterminalsteuerung 20). These trigger events are all initially in the embodiment according to FIG. 2 passed to the Nottasterterminalsteuerung 20, which then transmits this centrally to the control unit 19 of the recording module 15, with the consequences already set out above (image data transfer from the latch 17 in the main memory 18). In the present case, it is a retrofit variant in which the recording module 15 was subsequently used as a coherent unit in the emergency terminal 1. For this reason, the two control units 19 and 20 are present. An alternative variant sees an integration of the recording module 15 ex works, in which case the control units 19 and 20 are provided as a contiguous control unit.

However, trigger events are also possible, which are detected directly by the recording module 15 or the control unit 19 and trigger an image data transmission from the intermediate memory 17 into the main memory 18. For this purpose, the image data determined by the optical recording device 16 are further processed by the control unit 19. Aspects which, for example, function as triggering events with a corresponding design of the control unit 19 are a smoke and / or fire control, a light control, a person control with a biometric recognition device and an obstacle control.

According to the embodiment Fig. 2 Furthermore, a data transmission means 42 is provided, which can transmit the data stored in the main memory 18 wirelessly to a suitable receiver device. Alternatively, the data transmission means 42 may also be designed as a suitable interface or the like. In a further embodiment, the main memory is designed to be mobile and can be removed for reading from the recording module 15. In this embodiment can then be dispensed with the data transmission means, which in Fig. 2 is illustrated by the dashed representation.

The Figures 3 and 4 Finally show further alternative arrangement possibilities of the recording module 15, wherein Fig. 3 a so-called single-leaf escape door (door 26) and Fig. 4 a two-leaf door (scroll 27 and pod 28) relates. From the recording module 15 is in the Figures 3 and 4 , as well as in the FIGS. 1a and 1b , Only the lens 3 of the optical recording device 16 visible in each case. The remaining components of the respective escape door security device are housed in the housing of the respective component or concealed by this, in which the recording module is respectively integrated.

In principle, it is sufficient to provide one exit module per escape door, for example in one of the in the Figures 3 or 4 shown for the escape door security device relevant components and / or in one of the positions shown. It is of course also possible to provide several recording modules per escape door, as for example in the Figures 3 and 4 the case is.

In detail Fig. 3 an escape door with a emergency terminal 1 (comparable in design to the emergency terminal 1 off Fig. 1 ), which is arranged on the wall side next to the door leaf 26. With the emergency terminal 1 are the other components siren 29, fire detector 30, flashlight 31, locking device 32 (in the form of an electromagnet) and door drive 33 in conjunction, as in FIG. 3 is indicated by the corresponding connecting lines, and are controlled by this. In addition to already in Fig. 1 In addition or alternatively, for example, it is also possible to arrange the recording module in the housing of the fire detector 30 or in the housing of the locking device 32 (specifically, a door magnet). Moreover, it is of course also possible to arrange the recording module in the housings of the further escape door-related components, for example the components 29, 31 and 33. If the escape door safety device is arranged in the emergency terminal 1, in preferred embodiments it is also a There is a door contact which can detect the closing position of the door leaf 26. This too is in FIG. 3 exemplified by the corresponding branching connection from Nottasterterminal 1 indicated to the door leaf.

The escape door Fig. 3 further includes a so-called panic bar 34 which extends substantially the entire width of the door panel 26. The panic bar 34 is designed as a pushbar variant. An impressions of the panic bar 34 has an unlocking of the escape door 26 result. A panic bar 34 thus has the advantage that the fugitives in a panic trap, for example, only have to press against the door or the panic bar 34 in order to achieve an opening of the escape door. In such unlocking the recording module can be accommodated, as in Fig. 3 is shown.

Allen in Fig. 3 However, shown alternatives to the arrangement of the recording module is common that the lens or the optical recording device is in each case arranged in the corresponding housing in such a way that they can capture image data of the area in front of the escape door 26. It goes without saying that, accordingly, a relatively high-lying in the vertical direction arrangement, for example in the housing of the fire detector 30 or the locking device 32, is advantageous because the lens 3 of the optical recording device then, for example, not covered by the body of a standing in front of the escape door. Ideally, an arrangement of the lens 3 is basically at eye level, in order in particular to be able to detect the visual field of the person standing in front of the escape door.

Also a two-winged door can basically with the in Fig. 3 be shown components. The double-leaf door in Fig. 2 However, specifically concerns the use of designed as a so-called door guard 35 escape door security devices with recording module. In contrast to Fig. 3 is in Fig. 4 a two-leaf door with overhead door closers 38 and a closing sequence control not shown in detail present. Both the active leaf 27 and the stationary leaf 28 also each have a panic bar 34, wherein the panic bar 34 in Fig. 4 are designed as swivel bar and can be pressed to the door pivot shown about the pivot axis S1 shown in dashed lines. Below the panic bars 34, a door guard 35 is arranged in each case, which has a spring-loaded folding lever 37 for detecting the position of the panic bar 34, which abuts against the panic bar 34 from below. The housing 4 of the door guard 35 further includes a Einschwenkabflachung 36, in which the folding lever 37 can pivot on actuation of the panic bar to the housing about the axis S2. The Einschwenkabflachung 36 is followed by a beveled portion 40, which eventually merges into the lower bulged portion 39 of the housing 4. In particular, in the bulging area 39, the individual components, such as control unit, power supply, etc., of the door guard 35 are arranged.

Differences between the two door guards are in particular in the arrangement relative to the panic bar 34. The in Fig. 4 left door guard is arranged with respect to the panic bar 34 on the side (left), whereas the door guard 35 is arranged on the right side in the axial direction of the pivot axes centered to the panic bar 34. As in the previous embodiments, the recording module is in Fig. 4 only visible with their respective lens 3 of the optical recording device. When stand-wing-side door guard 35, the lens 3 is arranged in the lower bulged area 39, which is particularly advantageous for space reasons. Alternatively, it is also possible to arrange the recording module in the housing 4 of the door guard 35 in such a way that the lens 3 is located in the chamfered area 40 of the door monitor housing 4, wherein it should be noted that the lens of the optical recording device by the actuation of the Panic bar 34 einschwenkenden folding lever 37 is not obscured to ensure reliable recording by the optical recording device. This arrangement allows due to their obliquely oriented upward orientation in particular an optimal face detection of the operator of the panic bar 34th

Fig. 5 schematically illustrates the operation of the rolling image data storage in the latch 17 and the transmission of the image data in the main memory 18 in response to a trigger event A, A 'or B. The dashed arrow in the center of the picture symbolizes a time scale 41, the time progressing from left to right t indicates.

In the left-hand part of the picture, two detail enlargements of the time scale 41 are indicated. Each magnified section represents in each case the period in which image data sets are created by the optical recording device 12 and transmitted to the buffer. All in all is the cache in the embodiment in Fig. 5 executed so that it can store 45 image data sets D. In the time lag further (on the scale 41 left arranged section) are thus in the buffer all in all the image data sets D1 to D12 and, not in Fig. 5 extra quoted, D13 to D45 filed. Overall, a sequentially sequential image sequence SEQ1 is thus stored in the buffer. The buffer 17 is a rolling memory. The image data sets contained in the intermediate memory are thus successively replaced by current image data sets, wherein in each case the temporally oldest image data set is replaced by the image data record D currently recorded by the optical recording device.

The example in Fig. 5 This means concretely that initially the image data set D1 is replaced by the image data set D46, subsequently the image data set D2 is replaced by the image data set 47, etc. After a certain time interval, the image data sets D9 to D53 specified in accordance with the second detail enlargement are then stored in the buffer in the buffer, which together form, for example, the data sequence SEQ2 consisting of the time-sequential individual image data records D9 and D53. With regard to a current time P, image data which are directed backwards in time over a specific time interval are therefore always stored from this point in time (specifically, D _{t ((P) -46)} to (D _{t (P} ).

The interaction of the buffer 17 and the main memory 18 is now influenced by trigger events, for example the trigger events A, A 'and B, which are detected and evaluated by the control unit 19 of the escape door control device, which is part of the recording module 15. In the case of the triggering event A, for example the opening of an escape door, the image data record D _A temporarily stored in the buffer at time t _A , which extends from the time t _A back to the time until t _Ax , is transferred to the main memory 18 for permanent storage , Occurs shortly after the first triggering event A another triggering event A ', for example, a repeated opening of the escape door, which overlaps with respect to the time interval X with the record DA1, is in the embodiment according to Fig. 5 another data record DA1 'is transmitted to the main memory 18, which extends from the time t _A'-X to t _A. The data sets DA1 and DA1 'thus overlap to a certain extent in time and therefore, in some cases, also have identical image data records. However, in this embodiment, the control unit may also be designed in such a way that it recognizes overlapping data records and controls a common and not separate deposit in the main memory 18.

In addition to the exclusive transmission of time-retroactive data sets, as described above, it is also possible that the control unit 19 of the recording module in addition to the data relating to the trigger event temporally past records also temporally subsequent to the triggering event records transmitted to the main memory 18 for permanent storage. This is sketchy for the triggering event B, for example an emergency button actuation, in Fig. 5 shown. With the registration of the trigger event B by the control unit (not shown), first, the time before the trigger event B lying in the latch 17 between stored data and the image data sets from the time _BX t to t _B transferred to the main memory 18th However, the control unit further causes that the image data sets, which are temporally seen after the trigger event B in the time range t _B to t _{B + Y} deposited in the main memory 18 and form the image data set DA2. This type of combination of storing image data before and after a triggering event has the advantage that both the events before the triggering event and after the triggering event can be read out. For example, it can be clarified whether an unauthorized escape door was actually committed or not.

Claims (15)

Escape door security device (15), comprising a monitoring device (23, 25) for monitoring the closed state of an escape door (26, 27, 28), a triggering unit (5, 14, 34) the actuation of which enables, directly or indirectly, the opening of the escape door (26, 27, 28), - An optical recording device (16), which is adapted to receive image data (D1 to D53) at least one surrounding area of the escape door control device (15), and a memory device which stores the image data (D1 to D53) recorded by the optical recording device (16),
characterized,
that the memory device comprises an intermediate memory (17) and a main memory (18), said latch (17) of the optical recording device (16) during a specified time interval stores (X) captured image data (D) and continuously updated and the main memory ( 18) is designed for the permanent storage of image data (D) stored in the intermediate memory (17), and in that the memory device comprises a control unit (19) which controls the transmission of the image data (D) stored in the intermediate memory (17) into the main memory (16). 18) in response to a triggering event (A, A ', B) is formed. Escape door safety device (15) according to the preceding claim,
characterized,
in that the control unit (19) is designed in such a way that at least one of the following events is a triggering event (A, A ', B): - Operation of a emergency button (5) and / or - Triggering a door guard device (35) and / or - Exceeding a predetermined and / or adjustable maximum Türoffenzeit and / or - Unauthorized opening of the escape door (26, 27, 28) and / or - wrong operation of an access control unit and / or - Access manipulation and / or - Reset control functions and / or - Perform a programming change and / or - Opening a housing (4) and / or - Masking or otherwise manipulating the optical recording device (16). Escape door safety device (15) according to one of the preceding claims,
characterized,
that the control unit (19) is designed in such a way that they in response to the trigger event (B) in addition in a fixed time interval (X) after the trigger event (B) of the optical recording device (16) captured image data (D) in Main memory (18) deposited. Escape door safety device (15) according to one of the preceding claims,
characterized,
in that the control unit (19) is designed to record the image data (D), which is transmitted from the temporary store (17) in the main memory (18) as a function of a triggering event (A, A ', B), with a date and Recording time. Escape door safety device (15) according to one of the preceding claims,
characterized,
in that the control unit (19) is designed in such a way that it assigns the triggering event (A, A ', B) to the image data (D) transmitted from the buffer memory (17) to the main memory (18). Escape door safety device (15) according to one of the preceding claims,
characterized,
in that the control unit (19) is designed in such a way that it evaluates the image data (D) recorded by the optical recording device (16) for fire detection and / or light monitoring and / or obstacle detection and / or person control. Escape door safety device (15) according to one of the preceding claims,
characterized,
in that the control unit (19) comprises a biometric recognition device which is designed in such a way that it permits identification of persons via the image data (D) acquired by the optical recording device (16). Escape door safety device (15) according to one of the preceding claims,
characterized,
in that the optical recording device (16) is designed to record a permanent video stream or sequences of individual images. Escape door safety device (15) according to one of the preceding claims,
characterized,
in that a data transmission means (42) for reading out the data from the main memory (18) is present. Escape door safety device (15) according to claim 9,
characterized,
in that the data transmission means (42) is in communication with a higher-level monitoring center. Escape door safety device (15) according to one of the preceding claims,
characterized,
in that the escape door security device (15) is integrated in an emergency terminal (1), in an escape door monitoring terminal, in a door guard (35), in a door operating element (14, 34), in particular in a panic bar (34), or in a door fitting (2) , Escape door safety device (15) according to one of the preceding claims,
characterized,
in that the control unit (19), the memory device (17, 18) and the optical recording device (16) are constructed as a structurally related optical recording module (15). Method for controlling an escape door security device (15) according to one of the preceding claims, comprising a) the continuous recording of image data (D) by the optical recording device (16), b) storing the image data (D) in the buffer (17), c) overwriting image data (D) in the buffer memory (17) with updated image data (D1 to D53) after the lapse of a defined time interval (X), d) transmitting image data (D) from the buffer memory (17) into the main memory (18) after detecting a triggering event (A, A ', B) by the control unit (19) and e) the long-term storage of image data (D) in the main memory (18) to read the main memory (18). Method according to claim 13,
characterized,
that the image data (D) from the buffer (17) in the main memory (18) are transmitted and stored together with a time and / or the indication of the cause of the trip. Method according to one of claims 13 or 14,
characterized,
that in the main memory (18) to the before the trigger event (A, A ', B) transmitted from the latch (17) image data (D) over a predetermined time interval (X) and after the trigger event (B) from the optical recording device (16) recorded image data (Y) are deposited.

Images