EP4154224A1

EP4154224A1 - Additional zone monitoring for a building door

Info

Publication number: EP4154224A1
Application number: EP21725128.9A
Authority: EP
Inventors: Florian TRÖSCH
Original assignee: Inventio AG
Current assignee: Inventio AG
Priority date: 2020-05-18
Filing date: 2021-05-10
Publication date: 2023-03-29
Also published as: WO2021233719A1; US20230206710A1; AU2021276444A1; CN115668317A

Abstract

A system (1) for controlling access to a building and/or a restricted-access zone (36) in the building comprises a building door system (2) having a building door (2a), an electronic locking device (50) and a detection device (6) for capturing proof of authorization of an object (20). The building door (2a) can be unlocked by the electronic locking device (50) if there is valid proof of authorization and can be changed from a closed position to an open position in order to grant access to the object (20) at the building door (2a). A sensor system (8) monitors an access zone (Z1, Z2, Z3) comprising a stipulated access area with respect to the building door (2a) in order to detect a person (4) in the access zone (Z1, Z2, Z3). A control device (24) generates an alarm signal if the building door system (2) grants access to the object (20) and the sensor system (8) detects a person (4) in the access zone (Z1, Z2, Z3), wherein the building door system (2) prevents access from being granted when the alarm signal is received.

Description

Additional zone monitoring for building door

description

The technology described here relates generally to an access control system for a building. Embodiments of the technology also relate to a method for operating the access control system.

Access control systems can be designed in the most varied of ways in order to grant or deny people access to a restricted-access zone. The design can relate, for example, to the way in which people (users) have to identify themselves as authorized to access, e.g. B. with a key, a magnetic, chip or RFID card or a mobile electronic device (e.g. cell phone). WO 2010/112586 A1 describes an access control system in which an access-authorized user is shown an access code on a display on a mobile phone that is carried along. If the user holds the mobile phone up to a camera so that it can capture the displayed access code, the access control system grants the user access if the access code is valid.

The design of an access control system can also relate to the way in which access is granted or denied to people, for example through doors, locks or barriers. It is known, for example, that an electronic lock is arranged on a door, at which an access code must be entered so that the door can be unlocked and opened. In addition to this unlocking function on a door, it is known to monitor the passage through the door. WO 2018/069341 A1 describes, for example, a device that uses sensors to monitor whether and which objects are moving through a door. For object monitoring by means of infrared image recording and infrared pulse lighting, the device has a stereometric object recognition device consisting of a radiation source and an image recording device, which is fixed in a stationary manner near a wall or a door frame. The object recognition device determines the geometric dimensions of an object (person, car) in order to determine how far the door is to be opened for the object to pass. This is intended to ensure the comfort and safety of the passing object, for example a person walking or driving should feel safe when passing the door. The systems mentioned relate to different requirements of access control and related configurations of the access control systems. In addition to these known requirements, there are further requirements, for example due to changing habits or living conditions (e.g. dense living in apartments in a city), including a need for increased security and increasing automation of and in buildings. There is therefore a need for a technology for an access control system which fulfills these requirements, the access control having to take into account, in particular, the need for security without negatively affecting the convenience for users.

One aspect of such a technology relates to a system for controlling access to a building and / or a restricted-access zone in the building. The system comprises a building door system with a building door, an electronic locking device and a recognition device for detecting a proof of authorization of an object. The building door can be unlocked by the electronic locking device with a valid proof of authorization and brought from a closed position into an open position in order to allow access to the object at the building door. The system also comprises a sensor system which is configured to monitor an access zone, which comprises a defined access area to the building door, and to detect a person who is present in the access zone. A control device of the system is communicatively connected to the building door system and the sensor system. The control device is designed to generate an alarm signal when the building door system grants access to the object and the sensor system detects a person in the access zone, the building door system preventing the granting of access upon receipt of the alarm signal.

Another aspect of the technology relates to a method of operating a system for controlling access to a building and / or a restricted-access zone in the building. The system comprises a building door system which has a building door, an electronic locking device and a detection device for detecting an authorization verification of an object, a sensor system for monitoring an access zone which comprises a defined access area to the building door, and a control device which is communicatively connected to the building door system and the sensor system. According to the method, an authorization verification of the object is recorded by means of the detection device while the object is in an access zone of the building door. The building door can be unlocked with a valid proof of authorization and brought from a closed position to an open position in order to allow access to the object on the building door. The sensor system detects whether a person is in the access zone. An alarm signal is generated by the control device when the building door system grants access to the object at the building door and the sensor system detects a person in the access zone. When the alarm signal is received by the building door system, granting access to the building door is prevented by the building door system.

The technology described here creates an access control system that offers additional security in particular when the property requests access to a building door autonomously and without being accompanied by an associated person. The object can be an autonomously driving object (hereinafter referred to as a robot) or a pet (e.g. a dog or a cat). According to the technology described here, access is only granted to the property if the access zone of the building door is secure. In one embodiment, the access zone is secure when the object is alone in the access zone. If, on the other hand, there is a person "unauthorized" for the building door in the access zone who does not belong to the object, for example does not accompany it, the access zone is considered unsafe according to the technology described here. In this case, the granting of access is prevented, for example to prevent unauthorized entry by the person.

The granting of access can be prevented in different ways and, in particular, can be flexibly adapted to the respective situation. In one embodiment, preventing the granting of access may include blocking the building door in the closed position. In this case, the unauthorized person is detected before the building door is opened for the property. When the building door is opened, it is then possible, for example, to wait until the unauthorized person has left the access zone and this is then considered safe again is applicable. Depending on the design of the system, the object can then show the proof of authorization again.

In one embodiment, preventing the granting of access may include blocking the building door in a partially open position. In this case, the unauthorized person is detected when the building door for the property is already unlocked and partially opened. The building door can then be blocked so that it cannot be opened any further. This is particularly advantageous when the building door is only opened a gap that is too narrow for one person. In one exemplary embodiment, the building door can be waited for further opening until the unauthorized person has left the access zone and this is then considered safe again.

In one embodiment, preventing the granting of access can include closing the building door from a fully or partially open position; the fully open position is fixed in one embodiment for the object. For the object (e.g. a robot or a pet), for example, the building door can only be opened so wide that the object can pass through; this width represents the fully open position in this situation. Starting from this fully or partially open position, the building door can be closed. If the property is not yet in the passage area, the building door can be closed again. If, on the other hand, the object is already in the passage area, the building door can, for example, be closed until it touches the object.

In exemplary embodiments of the technology described here, the object can gain access to the building door without being accompanied by an authorized person and without an authorized person being in the restricted-access zone. The technology described here offers the mentioned additional security for such a situation, because the risk of an unauthorized person gaining access through the building door that is open to the object is reduced.

In one embodiment, the technology uses a detection device that is arranged on the building door system or in its vicinity and with the control device communicatively connected. The building door system can thus be adapted to the respective building situation. In one embodiment, the building door system includes a sliding door; the detection device can be arranged on the sliding door, as a result of which the cabling effort can be reduced.

The detection device is designed to detect an authorization certificate presented by the object. It is advantageous that the type of authorization and, accordingly, the design of the recognition device can be selected depending on the requirements in the building. The detection device can include, for example, a transmitting and receiving device for radio signals, a device for capturing a biometric feature, a device for capturing an optical code, a reader for a magnetic stripe card or a chip card, and / or a keyboard or a touch screen for manually entering a password . In one embodiment, the detection device can have a transmitting and receiving device for radio signals and a detection device (for example a digital camera) for an optical code. The type of optical code (e.g. barcode, QR code and color code) can also be selected.

In one embodiment, the sensor system comprises a camera and is designed to evaluate an image recorded by the camera in order to detect a person who is in the access zone. There is flexibility in the type of camera. The camera can be, for example, a 2D camera or a 3D camera. A time of flight camera, for example, can be selected as the 3D camera.

The technology described here also has an advantage that its use is not restricted to a specific type of building door system. In one embodiment, the building door system can comprise a sliding door that is installed in the building in a space-saving manner. A wall shell area of a door frame, for example, at least partially accommodates the sliding door in the open position. The door frame also has a passage area. The sliding door has an end face which, in the open position, points in the direction of the passage area. In one embodiment, the sliding door has an actuator that is configured to have a door leaf in the closed position of the sliding door in a first position to position the first sheet spacing and in the open position of the sliding door in a second position with a second sheet spacing. The first sheet spacing is larger than the second sheet spacing. Such a building door system is particularly suitable for the objects described here (in particular for a robot), since these and the building door system do not have to take into account a door leaf pivoting range. The closing process of the sliding door can, for example, already be initiated as soon as the object leaves a lane of the sliding door, ie is located outside the passage area.

In one embodiment, the sliding door system has an interface device which is arranged on the building door and designed to send data to and / or receive data from a building management system. The building management system can be arranged in the building or at a distance from it.

Proof of authorization enables the access authorization of the object to be checked. In one embodiment, if the authorization verification is valid for the object, the control device determines a data record in a storage device in which the authorization verification is assigned to an access authorization. The data record can be managed by a person responsible for the restricted-access zone (tenant, owner, building manager, etc.). In one embodiment, the authorization verification is also assigned to an opening width of the building door. The opening width is optimized for the object.

In the following, various aspects of the improved technology are explained in more detail on the basis of exemplary embodiments in conjunction with the figures. In the figures, the same elements have the same reference symbols. Show it:

1 shows a schematic representation of an exemplary situation in a building with an access control system according to an exemplary embodiment;

2 shows a schematic representation of an exemplary sliding door system as an exemplary embodiment of a building door system;

3A shows a schematic illustration of an exemplary sliding door system with a closed sliding door; FIG. 3B is a schematic illustration of the sliding door system from FIG. 3A, the sliding door being in an intermediate position; FIG.

Figure 3C is a schematic illustration of the sliding door system of Figure 3A, with the sliding door in an open position; and FIG. 4 shows a flow diagram of an exemplary embodiment of a method for operating an access control system.

1 is a schematic representation of an exemplary situation in an exemplary building with an access control system 1 and one or more floors L0, L 1. The term "building" in this description includes, for example, residential and / or commercial buildings, hotels, hospitals and Understand other buildings in which people may be. If there are several floors in a building, they can be served by an elevator system 10 in a known manner. For illustration, the elevator installation 10 is shown in FIG. 1 with an elevator car 12, elevator doors 14, a drive device 16 and a

Counterweight 18 indicated.

In the exemplary embodiment shown, the building has a ground floor L0 and an upper floor LI, which can be used by people 4 or objects 20. For illustration, FIG. 1 shows a person 4 outside the building in front of a house door (2) and a person 4 and an object 20 (for example an autonomous robot) on the floor LI. A person 4 or the object 20 can, for example, be authorized to enter the building and one or more rooms in the building; a building door system 2 provided for this purpose can block a building door 2a for a person 4 or an object 20 or release it for them if they have access authorization. To others

However, the person 4 or the object 20 cannot be authorized to vacate; the corresponding building doors 2 remain locked for them.

Fig. 1 shows on the upper floor LI two building doors serving as building interior doors 2a, through which z. B. People 4 or objects 20 behind the restricted access

Areas or rooms 36 (see Fig. 2) can enter and leave. The building and / or individual areas or rooms with restricted access can be managed by a responsible person (e.g. tenant, owner, building manager, etc.); the person responsible for this can grant access authorizations. A person skilled in the art recognizes that the building on the first floor L0 can also have one or more building doors 2a, for example another house door and / or one or more building interior doors. A single building door 2a or more than two building doors 2a can be present on the upper floor LI. The latter can be the case, for example, in an office building or in a residential building, in which individual offices or apartments can be entered from a common hallway.

Each of the building doors 2a shown in FIG. 1 has an electrically controllable locking device 50 (see FIG. 2), by means of which a building door 2a can be locked and unlocked. In one embodiment, the locking device 50 can be controlled by an electrical control signal. If the building door 2a can be opened for a person 4 or an object 20, the electrical control signal activates the locking device 50, as a result of which the building door 2a is unlocked. Correspondingly to this, in one embodiment, the locking device 50 can be controlled by an electrical control signal in order to lock the building door 2a. An exemplary embodiment of a locking device 50 is given elsewhere in this description.

1 also shows a building management system 22 (BM), a communication network 28 and a sensor system 8. The communication network 28 extends (horizontally) on the floors L0, LI and (vertically) between the floors L0, LI and connects the sensor system 8 with them the building management system 22. The sensor system 8 comprises a multiplicity of individual systems, which are shown in FIG. 1 as cameras (in the following the reference symbol 8 can also refer to a camera). The sensor system 8 monitors defined zones or areas in the building and, depending on the building and requirements, also outside the building. According to the technology described here, the sensor system 8 monitors access zones ZI, Z2, Z3 in the area of the building doors 2a, in particular, shown as an example in FIG. 1. A person skilled in the art recognizes that the access zones ZI, Z2, Z3 can overlap and that, for example, only a single access zone ZI, Z2, Z3 is defined on a floor L0, LI; this can z. B. extend over the entire area in front of the building door or doors 2a on the floor L0, LI. The person skilled in the art also recognizes that the sensor system 8 can be adapted to the building (z. B. with respect to its size, location and type of use) and that z. B. also corridors, corridors, parking levels, garages and stairwells can be monitored. The number of cameras 8 and their positioning in the building can be selected accordingly.

In the exemplary embodiment shown, one aspect of the building management system 22 relates to a control and monitoring of the access to the building and to the individual areas and rooms within the building. In one embodiment, this aspect can be implemented for the building by a control device (mR) 24 in connection with the building door system 2, the sensor system 8 and a storage device 26 in which a database is stored; these components are part of an access control system 1, to which reference is made in the following description.

In the situation shown in FIG. 1, the technology described here can be used in an advantageous manner in order to operate the access control system 1 with the highest possible degree of security. Briefly and as an example, the access control system 1 has the building door system 2, the sensor system 8 and the control device 24. The building door system 2 comprises one or more building doors 2a, each with an electronic locking device 50 and a detection device 6 for detecting proof of authorization for the person 4 or the object 20, the building door 2a being unlockable by the electronic locking device 50 with a valid authorization verification and from a closed position can be brought into an open position in order to allow the person 4 or the object 20 access to the restricted-access zone 36. The sensor system 8 is designed to monitor an access zone ZI, Z2, Z3, which comprises a defined access area to the building door 2a, and to detect a person 4 who is in the access zone ZI, Z2, Z3. The control device 24 is communicatively connected to the building door system 2 and the sensor system 8 and is designed to generate an alarm signal when the building door system 2 grants access to the object 20 and the sensor system 8 detects a person 4 in the access zone ZI, Z2, Z3. When the alarm signal is received by the building door system 2, the building door system 2 prevents the granting of access.

The technology thus detects by means of the sensor system 8, for example, the object 20 shown in FIG. B. coming from the elevator door 14 in Moved towards building door 2a in zone Z3. The object 20 can be, for example, a robot or a pet (e.g. a dog or a cat). In the following description, the object 20 is a robot that wants to move into the room behind this building door 2a (e.g. restricted-access zone 36 in FIG. 2) in order to e.g. B. to fulfill an order (e.g. handing in a delivery or cleaning the floor). The above-mentioned responsible person who is responsible for this room can, for example, grant object 20 access authorization for the building and / or the room when placing the order. The access authorization is stored in connection with an associated proof of authorization (e.g. an access code) in the building management system 22, in particular in the memory device 26.

If the object 20 is then located on the building door 2a and presents evidence of valid access authorization (proof of authorization), the building door 2a can be unlocked. Before the building door 2a is opened, the access control system 1 uses the sensor system 8 to check whether the access zone Z3 is "safe". If there is no person 4 in the access zone Z3, ie the object 20 is alone in front of the building door 2a, the access zone Z3 is safe and the building door 2a can be opened in response to a control signal in order to allow the object 20 access. If, on the other hand, the access zone Z3 is not secure because, in addition to the object 20, there is also a person 4 (e.g., who is not authorized to access the building door 2a) in the access zone Z3, the control device 24 generates an alarm signal; the alarm signal is generated when the building door system 2 grants access to the object 20 and the sensor system 8 essentially at the same time detects the person 4 in the access zone Z3. The process of granting access can then be stopped, for example it can be interrupted until the access zone Z3 is safe again. During this interruption, the building door 2a is locked and closed. As an alternative to this, the process can also be canceled if it is already being carried out; the building door 2a is in the locked and / or closed state. In one embodiment, the object 20 can re-present the credentials after a specified waiting time; the process mentioned is then repeated, possibly until the access zone Z3 is secure. The technology thus reduces the risk that an unauthorized person can enter the room through the building door 2a that is open to the robot. According to the technology described here, 8 people 4 who are in the access zones ZI, Z2, Z3 are detected with the aid of the sensor system. In one exemplary embodiment, the sensor system 8 can comprise optical sensors in the visible or infrared optical spectrum in conjunction with an evaluation device. In another exemplary embodiment, the sensor system 8 can comprise sensors based on a different physical principle, for example ultrasonic sensors or radar sensors. In one embodiment, the evaluation of sensor signals allows a location of the person 4, their speed of movement and speed to be determined. In the following description, the sensor system has 8 cameras as optical sensors in connection with an evaluation device for digital image recordings. Such a camera can be, for example, a 2D or 3D camera, the mode of operation of which is known to the person skilled in the art, so that only the mode of operation of a 3D camera is summarized here.

A camera based on the principle of time of flight measurement ("Time of Flight", TOF sensor) can be used as a 3D camera. The 3D camera comprises a wet diode or fiber diode unit that emits, for example, Ficht in the infrared range, with the Ficht being emitted in short pulses (e.g. several tens of nanoseconds). The 3D camera also comprises a sensor group made up of a number of light-sensitive elements. The sensor group is connected to a processing chip (e.g. a CMOS sensor chip) which determines the running time of the emitted spruce. The processing chip simultaneously measures the distance to a number of target points in space in a few milliseconds. The 3D camera can also be based on a measuring principle in which the travel time of the transmitted spruce is recorded over the phase of the spruce. The phase position when sending the spruce tree and when receiving it is compared, and from this the elapsed time or the distance to the reflecting object is determined. For this purpose, instead of short Ficht pulses, a modulated Ficht signal is preferably emitted. Further details on measurement principles are given, for example, in the following publications: "Fast Range Imaging by CMOS Sensor Array Through Multiple Double Short Time Integration (MDSI)", P. Mengel et al., Siemens AG, Corporate Technology Department, Munich, Germany, and " A CMOS Photosensor Array for 3D Imaging Using Pulsed Fiber ", R. Jeremias et al., 2001 IEEE International Solid-State Circuits Conference, page 252. The control device 24 of the access control system 1 is connected to the recognition device 6. The detection device 6 is generally designed to detect an authorization certificate, on the basis of which the access control system 1 can determine the access authorization of the person 4 or of the object 20. The credentials can, for example, be in the form of a physical key, a manually entered password (e.g. a PIN code), a biometric feature (e.g. fingerprint, iris pattern, speech / voice characteristics or facial features) or one of a magnetic, chip - or RFID card or an electronic device (NFC, Bluetooth or cellular network based) recorded access codes. Proof of eligibility must be presented when access to restricted zone 36 is desired.

According to the forms mentioned that the proof of authorization can have, the proof of authorization can be presented in different ways, for example by conscious manual action (e.g. entering a PIN code or holding out an RFID card) or by going to the door to to come within radio range of the detection device 6 (e.g. for establishing an RFID or Bluetooth connection). The detection device 6 can be arranged on the building door 2a or in its vicinity; it can for example be arranged on an outside of the building door 2a so that it can detect the authorization when the person or the object 20 is in front of the building door 2a.

The recognition device 6 is designed in accordance with the authorization verification provided in the access control system 1. This means that the recognition device 6 has, for example, a door cylinder, a detection device for a biometric feature, a detection device for an optical code (e.g. barcode, QR code and color code (see WO2015049186 A1), a reader for a magnetic stripe card or a chip card, a keyboard or a touch-sensitive screen for manual entry of a password, a transmitting and receiving device for radio signals. A person skilled in the art recognizes that in one embodiment, the recognition device 6 can be designed for one or more of these credentials. In one embodiment, the Detection device 6, for example, a transmitting and receiving device for radio signals and a digital camera for detecting a optical codes or a face. The optical code can be visibly printed on a carrier material or shown on a display of a mobile radio device. In the situation shown in FIG. 1, object 20 requests access and presents proof of authorization on building door 2a in access zone Z3; Person 4 is not authorized to enter there. The recognition device 6 is designed on this building door 2a for recognizing an authorization verification suitable for the object 20. In one embodiment, the credentials are transmitted by radio, in particular a Bluetooth technology, from the object 20 to the recognition device 6.

A person skilled in the art recognizes that the building management system 22 can be wholly or partially outsourced to an IT infrastructure for so-called cloud computing (also known as “cloud” in colloquial terms). This includes, for example, the storage of data in a remote data center, but also the execution of programs that are not installed locally but rather remotely. Depending on the configuration, a certain functionality can be made available, for example, in the control device 24 or via the “cloud”. For this purpose, for example, a software application or program parts thereof can be executed in the “cloud”. The control device 24 then accesses this infrastructure as required in order to execute the software application.

2 shows a schematic representation of an exemplary building door system 2 in the form of a sliding door system (corresponding to this, the building door system 2 is also referred to below as a sliding door system 2, which has a sliding door 2a). The sliding door system 2 is inserted into a building wall and represents a physical barrier between a public zone 34 and the restricted-access zone 36. With reference to the xyz coordinate system shown in FIG -Axes is spanned. The restricted-access zone 36 can e.g. B. an apartment, a business space or another room in the building. The sliding door system 2 can be inserted into an inner building wall (for a building-internal access control, e.g. access to an apartment) or in an outer building wall (for controlling access to the building). As explained in more detail elsewhere in this description, the sliding door system 2 opens a sliding door 2a for the object 20 with access authorization. The sliding door system 2 shown in FIG. 2 comprises a door frame 44 (also referred to as a door frame) and the sliding door 2a. The door frame 44 has a passage area 42 and a wall shell area 30 which is designed to at least partially receive the sliding door 2a. For this purpose, the wall shell portion 30 has a structure which forms a cavity which is dimensioned to receive the sliding door 2a. The passage area 42 is the area in the building wall in which passage in the direction of the y-axis from one zone (34, 36) into the other zone (34, 36) is possible; It exists between a vertical frame part (door post) and the opposite wall shell area 30. Depending on the configuration, the wall shell area 30 is housed in a cavity in the building wall, or the wall shell area 30 can be regarded as part of the building wall, possibly after cladding.

The sliding door 2a is displaceable in the door frame 44 between a closed position shown in FIG. 3A and an open position shown in FIG. 3C. In relation to the x-y-z coordinate system shown in FIG. 2, the sliding door 2a is displaced along the x-axis. In the open position, the sliding door 2a is in one embodiment essentially within the wall shell area 30. Between these maximum positions, the sliding door 2a can assume an intermediate position shown in FIG is less open, d. H. an end face 38 of the sliding door 2a has a variable distance from the frame part. This variable distance is shown as opening width W in FIG. 3B.

The sliding door 2a has two essentially parallel door leaves 32 (each on an inner side and an outer side of the sliding door 2a). The door leaves 32 are spaced apart from one another (in the y-direction) so that there is an interior space between the door leaves 32 in which system components and insulation material for soundproofing and fire protection can be arranged. The door leaves 32 are connected to one another in the area of the end face 38, as shown, for example, in FIG. 3a. Each of the door leaves 32 extends parallel to the xz plane. Further details of the sliding door 2a are disclosed elsewhere in this description. 2 also shows a processor unit (DC) 54, an embodiment of the detection device 6, an interface device 48 and an embodiment of the locking device 50 (M), which are components of the sliding door system 2 in one embodiment. In one embodiment, the sliding door system 2 is connected to the building management system 22 (BM); In the exemplary embodiment shown in FIG. 2, this connection is made by means of the communication network 28 to which the building management system 22 and the interface device 48 are coupled. Depending on the configuration, a certain functionality can be made available, for example, in the processor unit 54, in the building management system 22 or via the “cloud”. The processor unit 54 or the building management system 22 access this infrastructure as required in order to execute a desired software application.

The communication network 28 can comprise an electronic bus system in an execution system. In one embodiment, the electrical connection of the sliding door system 2, including its supply of electrical energy, takes place via the interface device 48. A person skilled in the art recognizes that several sliding door systems 2 can be present in the building and that each of these sliding door systems 2 is coupled to the communication network 28 to communicate with the building management system 22, for example in connection with a determination and checking of access authorizations, if this is done centrally by the building management system 22.

The processor unit 54 is connected to a sensor unit 40 by an electrical connection 58. The processor unit 54 is also connected to the locking device 50 and the interface device 48 by means of an electrical connection 52. The electrical connections 52, 58 are designed for signal and / or energy transmission; for this purpose they can each comprise individual electrical lines or an electrical bus system.

The processor unit 54 is also connected to the recognition device 6. In the exemplary embodiment shown in FIG. 2, the detection device 6 detects a proof of authorization which a radio device 46 of the object 20 or a radio device carried by the object 20 transmits as a radio signal. The radio signal can according to a known standard for radio communication (e.g. RFID, WLAN / WiFi, NFC, Bluetooth). Correspondingly, the detection device 6 is designed to receive such a radio signal; In FIG. 2, a transmitting / receiving device 56 and an antenna connected to it are shown for this purpose.

The transmitting / receiving device 56, alone or in conjunction with the processor unit 54 and / or the control device 24 and the stored database (26), determines the authorization verification from the received radio signal, which is then used to determine the access authorization. If the credentials are valid, the object 20 is granted access; in this case, the processor unit 54 controls the locking device 50, which moves the sliding door 2a in the direction of the open position. If the proof of authorization is not valid, the sliding door 2a remains closed and locked.

The sensor unit 40 is arranged on the end face of the sliding door 2a, for example in an area of an upper (corner) edge of the sliding door 2a. From this elevated area, the sensor unit 40 has an optimized detection field in the direction of the passage area 42 and the floor. An exemplary detection field is shown in FIG. 2 (vertical) and in FIG. 3B (horizontal). In addition, the sensor unit 40 is better protected in this area from soiling and damage (e.g. from vandalism). The person skilled in the art recognizes that the sensor unit 40 can be arranged at a different location on the sliding door 2a in another exemplary embodiment; the sensor unit 40 can also be arranged on the door frame 44.

According to the technology described here, a (vertical) height of the object 20 is determined with the aid of the sensor unit 40. In the present description, the term "height" is used for the extension of the object 20 in the direction of the z-axis; this although the object 20 according to the technology described here can also be a person (for people, their size is usually specified). The height of the object 20 (human, animal or robot) indicates a distance between the floor and a topmost point or area of the object 20. At the time of the determination (measurement time), the object 20 is essentially on the floor in the passage area 42. The sensor unit 40 has a fixed and known distance from the floor (floor distance). In this situation, according to a Embodiment an object distance between the sensor unit 40 and the object 20 is determined. The height H of the object 20 results from a difference between the floor distance and the object distance.

In one exemplary embodiment, the sensor unit 40 comprises a 3D camera. The mode of operation of a 3D camera is described elsewhere in this description in connection with the sensor system 8.

The components mentioned (processor unit 54, recognition device 6, interface device 48, locking device 50 are arranged on sliding door 2a and move with sliding door 2a. In one embodiment, processor unit 54 is arranged in an area between door leaves 32, for example in the area of one of the The rear of the sliding door 2a is not visible from the outside in one embodiment, because the sliding door 2a can be wider than the passage area 42 and the rear side therefore remains in the wall shell area 30 in the closed position of the sliding door 2a This area can also be arranged for the locking device 50 and the interface device 48. The electrical connections 52, 58 are arranged accordingly between the door leaves 32 and are not visible from the outside. However, the technology described here is not exemplary named arrangement of the components is limited.

The storage device 26 is electrically connected to the control device 24. In the exemplary embodiment shown, the storage device 26 has a storage area for a database (DB) and a storage area for one or more computer programs (SW) for operating the sliding door system 2. In one exemplary embodiment, operating the sliding door system 2 includes opening the sliding door 2a as a function of the detected Object 20 and the determination of a height H of object 20. The computer program can be executed by control device 24.

The database stores a record for the persons and the object 20 who are authorized to enter the restricted-access zone 36. The stored data record is also referred to below as a user profile. The user profile includes data, e.g. B. Name, information on proof of authorization (key number, PIN code, access code, including biometric data) and any time restrictions (e.g. access from Monday to Friday, from 7:00 a.m. to 8:00 p.m.). If several people and objects are authorized to access the restricted-access zone 36, the database stores a user profile for each person and each object.

According to the technology described here, each user profile also specifies the opening width W (see FIG. 3B) up to which the sliding door 2a is to be opened and the height H of the object 20. The height H of the object 20 can be a maximum height or a height range because, for example, a cat can walk through the passage area 42 with its head lowered or raised and / or its tail raised. In one exemplary embodiment, its length (in the y direction) can also be specified for each object 20. The height H and the length (if present) are plausibility parameters, as stated elsewhere in this description.

This data can be organized in a table, as shown in the following table. The table shows four user profiles for four authorized persons (human, cat, dog, robot). Each authorized person is assigned an identifier (ID) that is linked to the width W and the height H. For example, if the recognition device 6 recognizes the identifier ID = 78, then user profile no. 4 for a robot is accessed. In this case the sliding door 2a is opened approx. 50 cm and the height determined with the aid of the sensor unit 40 is compared with the height H = 50 stored for the robot. The determined height must be in a height range that matches the stored height of the robot, ie it must be plausible that it is actually the robot. Instead of a specific height H, in one embodiment, a height range can be specified in the table for one or more (all) authorized persons. The person skilled in the art recognizes that the values given in the table are exemplary and can deviate from real situations. With the plausibility check mentioned, it can be recognized if a height H of 180 cm is determined for a pet, for example instead of an expected height H of 50 cm, that not only the pet but also a person goes through the opened sliding door 2a. It could also be the case, for example, that an unauthorized person removes a pet's credentials (e.g. RFID tag) in order to try to gain access instead. Similarly, an expected height H of 170 cm does not match a determined height H of 100 cm. For example, this can happen when a child is using a parent's credentials. Although the child is an authorized person, the parents may not want the child to use the proof of eligibility.

With an understanding of the above-described basic system components and their functionalities, a description of an exemplary method for operating the access control system 1 based on the situations shown in FIGS. 1 and 2 follows in connection with FIG. 4. The description is made with reference to the object 20 (robot) which, coming from the public zone 34 (FIG. 2), moves in the direction of the sliding door 2a in order to get into the restricted-access zone 36. The object 20 is located in the access zone Z3 shown in FIG. 1. The radio device 46 of the object 20 uses, for example, Bluetooth technology and is activated. The method shown in FIG. 4 begins in a step S1 and ends in a step S9. The person skilled in the art recognizes that the division into these steps is exemplary and that one or more of these steps can be divided into one or more sub-steps or that several of the steps can be combined into one step.

In a step S2, the recognition device 6 detects an authorization verification of the object 20, which is located in the access zone Z3 in front of the sliding door 2a. The proof of authorization is available, for example, as an access code that is transmitted by means of the radio device (e.g. via Bluetooth technology). In a step S3, the control device 24 checks whether a user profile has been created for the authorization verification in the database in the storage device 26. If this check shows that the object 20 is authorized to access, the process proceeds along the yes Branch to a step S4. If, on the other hand, the object 20 is not authorized for access, the method proceeds along the no branch to step S9 and ends there; the building door 2a remains locked and closed.

In step S4, the sensor system 8 is activated, in particular for generating and evaluating image recordings. The person skilled in the art recognizes that the sensor system 8 can already be activated according to another exemplary embodiment. In this case, step S4 may be omitted. The sensor system 8 can, for example, be continuously activated for general monitoring purposes and can continuously evaluate image recordings. In another exemplary embodiment, the sensor system 8 can be activated when, for example, a movement is detected on the floor F0, F1, either by an external movement sensor or by the sensor system 8 itself, which detects changes in the image recordings as movement and reacts to them.

In a step S5, the sensor system 8 can, for example, evaluate image recordings from the access zone Z3 in order to determine whether a person 4 is in the access zone Z3. Devices and algorithms for evaluating image recordings, for example in order to recognize, count and possibly identify people and / or objects, are known to the person skilled in the art. If this check shows that no person 4 is there and the situation in front of the sliding door 2a is therefore considered to be safe, the method proceeds along the no branch to a step S6.

In step S6, the object 20 is granted access. To this end, the locking device 50 is activated in order to unlock and open the sliding door 2a. As stated above, the opening takes place automatically, without any action on the part of the object 20. In one embodiment, the sliding door 2a is only opened as far as is defined in the user profile for the object 20 (robot).

If the test in step S5 shows that a person 4 is in the access zone Z3, this situation in front of the sliding door 2a is considered unsafe. The person 4 present could represent a possible risk because they could illegally enter the restricted-access zone 36 through a sliding door 2a opened for the object 20. Because the object 20 is not alone in front of the sliding door 2a, the method proceeds along the Yes branch to a step S7.

An alarm signal is generated in step S7. The alarm signal is generated, for example, by the control device 24 when both the sliding door 2a is to be opened for the object 20 authorized to enter and a person 4 present is detected.

In a step S8, the granting of access by the sliding door system 2 is prevented. The prohibition of the granting of access takes place in response to the alarm signal received from the sliding door system 2. In one embodiment, the sliding door 2a remains locked and closed; this can be the case if the person 4 is detected before the sliding door 2a is opened for the object 20. It can also happen that the person 4 enters the access zone Z3 and is only detected when the sliding door 2a has already been unlocked and is more or less open. In one embodiment, the opening can be stopped in this case and the sliding door 2a can be blocked against further opening. Preventing the granting of access can also include closing the sliding door 2a from a fully or partially open position. In another exemplary embodiment, the sliding door 2a can be moved completely or partially into the closed position; the latter in particular when the object 20 is already in the passage area 42 and blocks the path of the sliding door 2a. In this case an alarm can be triggered.

A set of rules can be established in the access control system 1 which specifies whether and which action should be initiated after such an alarm. These actions can be situation-specific, ie it depends on what time (day or night) and on what day (working day or weekend, vacation time) the alarm is generated. Exemplary actions can be: an audible and / or visually perceptible alarm (siren, warning light), automatic notification of security personnel (police or private security service) and automatic notification of a person responsible for the restricted-access zone 36 (tenant, owner, building manager, etc.). The person skilled in the art recognizes that these actions can also be combined. In the exemplary embodiment shown, the method proceeds from step S8 to step S9 and ends there.

Referring again to the positions of the sliding door 2a shown in FIGS. 3A-3C, an exemplary embodiment of the sliding door system 2 is described below the components of the sensor unit 40 (S), processor unit 54 (DC) and locking device 50 (M) encompassed by the sliding door 2a are shown; For reasons of illustration, the interface device 48 and its connection to the building management system 22 are not shown. The locking device 50 and the processor unit 54 are arranged inside the sliding door 2a, in particular between the door leaves 32. The wall shell area 30 with the structure for receiving the sliding door 2a in the open position is also shown in FIGS. 3A-3C.

The sensor unit 40 is arranged on the front side. The arrangement is selected so that the electromagnetic radiation (spruce or radio waves) can propagate unhindered in the direction of the passage area 42 during operation. The sensor unit 40 can, for. B. inserted into a recess on the front side and protected from damage and dirt by a radiation-permeable cover. The sensor unit 40 can also be arranged on the door frame. The electrical connection 58 (FIG. 2) between the sensor unit 40 and the processor unit 54 and the electrical connection 52 (FIG. 2) run within the sliding door 2a, for example between the door leaves 32.

The illustrated embodiment of the sliding door 2a is based on a principle that is similar to a principle known from EP 2876241 A1. This describes a sliding door system in which two opposing door surfaces are coupled to an actuator which moves the door surfaces towards or away from one another. In relation to the sliding door system 2 according to the technology described here, this means that the two door leaves 32 have a leaf spacing d1 in the closed position of the sliding door 2a. The sliding door 2a is locked in this position. During the opening of the sliding door 2a, the two door leaves 32 are moved towards one another by an actuator 31 (FIGS. 3A-3C) so far that they have a leaf spacing d2 which is dimensioned such that the sliding door 2a is in its fully or partially open position ( Fig. 3B and Fig. 3C) has such a small thickness that it fits into the receiving structure of the wall shell area 30. The sheet spacing dl is greater than the sheet spacing d2. In this position the sliding door 2a is unlocked. When the sliding door 2a is pushed out of the wall shell area 30, the two door leaves 32 are moved away from one another (spread apart) so that the sliding door 2a assumes a fixed thickness in the closed state (FIG. 3A). The thickness is determined such that the outer sides of the two door leaves 32 in the closed position are essentially flush with the outer sides of the wall shell area 30 or its cladding. As a result, an essentially smooth-surfaced finish is achieved on both sides of the wall in the door area.

In one embodiment, the sliding door system 2 has a guide device on a door cross member which supports the sliding door 2a and guides it along a roadway on its way between the closed position and the open position. The sliding door 2a has a complementary device on its upper edge. The guide device and the complementary device interact when the closing device 50 causes the sliding door 2a to move by means of a drive unit and acts on the complementary device; they can, for example, form a system with a telescopic extension. The drive unit can, for example, comprise a motorized or pneumatic slide drive which acts on the telescopic extension.

In one exemplary embodiment, the two door leaves 32 are moved towards or away from one another by the actuator 31. The actuator 31 can comprise a spreading device which is activated mechanically, electrically or electromechanically. The spreading device is designed to move the door leaves 32 towards one another when the sliding door 2a is to be opened and to move them away from one another when the sliding door 2a is to be closed. The person skilled in the art recognizes that other spreading devices can also be provided instead, for example cylinders actuated by pressure medium.

Claims

1. System (1) for controlling access to a building and / or a restricted-access zone (36) in the building, comprising: a building door system (2) with a building door (2a), an electronic locking device (50) and a detection device (6 ) for the acquisition of a proof of authorization of an object (20), wherein the building door (2a) can be unlocked by the electronic locking device (50) with a valid proof of authorization and can be brought from a closed position to an open position to the object (20) on the building door (2a) grant access; a sensor system (8) which is designed to monitor an access zone (ZI, Z2, Z3), which comprises a defined access area to the building door (2a), and to detect a person (4) who is in the access zone (ZI, Z2, Z3) stops; and a control device (24) which is communicatively connected to the building door system (2) and the sensor system (8), the control device (24) being designed to generate an alarm signal when the building door system (2) accesses the object (20) granted and the sensor system (8) detects a person (4) in the access zone (ZI, Z2, Z3), the building door system (2) preventing the granting of access upon receipt of the alarm signal.

2. System (1) according to claim 1, in which the detection device (6) is arranged on the building door (2a) or in the vicinity thereof.

3. System (1) according to claim 2, in which the locking device (50) and the detection device (6) are arranged on the building door (2a).

4. System (1) according to claim 1 or 2, wherein the detection device (6) comprises: a transmitting and receiving device (56) for radio signals, a detection device for a biometric feature, a detection device for an optical code, a reader for a Magnetic stripe card or a chip card, and / or a keyboard or a touch-sensitive screen for a manual Entering a password.

5. System (1) according to one of the preceding claims, in which the sensor system (8) comprises a camera and is designed to evaluate an image recorded by the camera (8) in order to detect a person (4) who is in the Access zone (ZI, Z2, Z3).

6. System (1) according to claim 5, wherein the camera comprises a 2D camera or a 3D camera.

7. System (1) according to claim 6, wherein the 3D camera comprises a time of flight camera.

8. System (1) according to one of the preceding claims, in which the building door system (2) comprises a sliding door (2a), wherein a door frame (44) has a passage area (42) and a wall shell area (30) which the sliding door (2a) at least partially in the open position, and wherein the sliding door (2a) has an end face which, in the open position, points in the direction of the passage area (42).

9. System (1) according to claim 8, wherein the sliding door (2a) comprises an actuator (31) which is designed to hold door leaves (32) of the sliding door (2a) in a closed position of the sliding door (2a) in a first position with a first sheet spacing (dl) and in an open position of the sliding door (2a) in a second position with a second sheet spacing (d2), the first sheet spacing (dl) being greater than the second sheet spacing (d2).

10. System (1) according to one of the preceding claims, also having an interface device (48) which is arranged on the building door (2a) and is designed to send and / or receive data from a building management system (22).

11. System (1) according to any one of the preceding claims, wherein the control device (24) is designed for the object (20) valid To determine a data record in a storage device (26) in which the authorization certificate is assigned to an access authorization.

12. A method for operating a system (1) for controlling access to a building and / or a restricted-access zone (36) in the building, the system (1) being a building door system (2), which includes a building door (2a), an electronic one A locking device (50) and a detection device (6) for detecting a proof of authorization of an object (20), a sensor system (8) for monitoring an access zone (ZI, Z2, Z3) which comprises a defined access area to the building door (2a), and a control device (24) which is communicatively connected to the building door system (2) and the sensor system (8), the method comprising:

Detection of a proof of authorization of the object (20) by means of the detection device (6) while the object (20) is in an access zone (ZI, Z2, Z3) of the building door (2a), the building door (2) being unlockable with a valid proof of authorization can be brought from a closed position into an open position in order to allow access to the object (20) on the building door (2a);

Detecting by the sensor system (8) whether there is a person (4) in the access zone (ZI, Z2, Z3);

Generation of an alarm signal by the control device (24) when the building door system (2) grants access to the object (20) on the building door (2a) and the sensor system (8) grants a person (4) in the access zone (ZI, Z2, Z3) detected; and upon receipt of the alarm signal by the building door system (2), preventing the building door system (2) from granting access to the building door (2a).

13. The method of claim 12, wherein preventing the granting of access comprises blocking the building door (2a) in the closed position.

14. The method of claim 12, wherein preventing the granting of access comprises blocking the building door (2a) in a partially open position.

15. The method according to claim 12, wherein preventing the granting of access comprises closing the building door (2a) from a fully or partially open position, the fully open position being defined for the object (20).