Access control system, elevator system and method for controlling an access control system

Abstract

The invention relates to a passage control system (100) for an elevator system (120). The passage control system (100) comprises a door device (102) allowing a user (112) to pass via the door device (102), at least one imaging device (104) for acquiring image data, at least one sensor device (106) for acquiring sensor data, at least one indication device (108), and a control unit (110). The control unit (110) is configured to receive image data from the at least one imaging device (104), detect a user (112) approaching the door device (102) based on the received image data, obtain destination floor information comprising at least two destination floors, control the at least one indication device (108) to produce a first visual indication comprising the at least two destination floors, and detect a destination floor selected by the user (112) from the at least two destination floors based on sensor data received from the at least one sensor device (106). The invention also relates to an elevator system (102) comprising the passage control system and to a method for controlling the passage control system.

Description

Technical Field

[0001] This invention generally relates to the technical field of access control. In particular, this invention relates to access control for elevators. Background Technology

[0002] Generally, door devices such as security doors and rotary doors may include access control. Access control allows only authorized users to pass through the door device. Access control may be based on the use of key cards; tags; identification codes; such as personal identification numbers (PINs), ID numbers; and / or biometric technologies such as fingerprints, facial recognition, iris recognition, retinal scans, voice recognition, etc. The door device may be communicatively coupled to the elevator system, thereby enabling an elevator call to be generated in response to the door device's identification of an authorized user. Summary of the Invention

[0003] The following is a simplified overview to provide a basic understanding of certain aspects of various embodiments of the invention. This overview is not a broad overview of the invention. It is neither intended to identify key or essential elements of the invention nor to depict its scope. The following overview presents only some concepts of the invention in a simplified form as a prelude to a more detailed description of exemplary embodiments of the invention.

[0004] The object of this invention is to provide a access control system, an elevator system, and a method for controlling the access control system. Another object of this invention is that the access control system, the elevator system, and the method for controlling the access control system enable easy selection of the destination floor.

[0005] According to a first aspect, a passage control system for an elevator system is provided, wherein the passage control system includes: a door device that allows a user to pass through the door device, at least one imaging device for acquiring image data, at least one sensor device for acquiring sensor data, at least one indicating device, and a control unit configured to: receive image data from the at least one imaging device, detect a user approaching the door device based on the received image data, obtain destination floor information including at least two destination floors, control the at least one indicating device to generate a first visual indication including at least two destination floors, and detect a destination floor selected by the user from at least two destination floors based on the sensor data received from the at least one sensor device.

[0006] The generation of the first visual indication may include projecting the first visual indication onto a surface near the door device, and the first visual indication may include indication elements for each of at least two destination floors.

[0007] Detecting the user-selected destination floor may include detecting at least a partial deformation of at least one indicator element, wherein if an indicator element with at least a partial deformation is detected, the indicator element may represent the user-selected destination floor; or if two or more indicator elements with at least a partial deformation are detected, the indicator element with greater deformation may represent the user-selected destination floor, or no user selection is detected.

[0008] Alternatively or additionally, the control unit may be configured to provide the detected user's destination floor selection to an external database and / or elevator control system.

[0009] An elevator control system can be configured to generate an elevator call in response to a detected user selection of a destination floor received from a control unit, in order to assign the elevator car to the user's selected destination floor.

[0010] The control unit can also be configured to receive elevator car identification information of the elevator car for which the elevator control system generates an elevator call.

[0011] Alternatively, the control unit may also be configured to provide elevator car identification information of the elevator car to the elevator control system for generating an elevator call to assign the elevator car to the destination floor selected by the user.

[0012] The control unit may be further configured to control at least one indicating device to project a second visual indication onto a surface near the door device or user, wherein the second visual indication may include elevator car identification information; and / or wherein the system may further include one or more displays, and the control unit may be configured to control one or more displays to display the elevator car identification information.

[0013] At least two destination floors may include one or more default destination floors defined based on the time of day, one or more destination floors defined based on current traffic flow, and / or one or more destination floors defined based on exceptional circumstances.

[0014] User detection can further include identifying authorized users by using facial recognition-based identity verification, based on received image data and pre-stored data associated with authorized users.

[0015] In addition, at least two destination floors include: one or more default destination floors defined based on the time of day, one or more destination floors defined based on current traffic flow, one or more destination floors defined based on abnormal conditions, one or more default destination floors assigned to the authorized user, one or more destination floors set by the authorized user, one or more destination floors defined based on the destination floors previously selected by the authorized user, and / or destination floors defined based on events arranged for the authorized user, wherein the arranged events are obtained from an external storage unit storing the arranged events.

[0016] According to a second aspect, an elevator system is provided, wherein the elevator system includes: at least two elevator cars, each elevator car traveling along a respective elevator shaft; an elevator control system; and an access control system including at least one door device as described above.

[0017] According to a third aspect, a method for controlling an access control system is provided, wherein the method includes: receiving image data from at least one imaging device; detecting a user approaching a door device based on the received image data; obtaining destination floor information including at least two destination floors; controlling at least one indicating device to provide a first visual indication including at least two destination floors; and detecting a destination floor selected by the user from at least two destination floors based on sensor data received from at least one sensor device.

[0018] Providing a first visual indication may include projecting the first visual indication onto a surface near the door device, and the first visual indication may include indication elements for each of at least two destination floors.

[0019] Detecting the user-selected destination floor may include detecting at least a partial deformation of at least one indicator element, wherein if an indicator element with at least a partial deformation is detected, the indicator element may represent the user-selected destination floor; or if two or more indicator elements with at least a partial deformation are detected, the indicator element with greater deformation may represent the user-selected destination floor, or no user selection is detected.

[0020] The method may also include providing the detected user's destination floor selection to an external database and / or elevator control system.

[0021] The method may also include generating an elevator call in response to receiving a detected destination floor selection from a user, to assign an elevator car to the destination floor selected by the user.

[0022] The method may also include receiving elevator car identification information of the elevator car to which the elevator call is directed from the elevator control system.

[0023] The method may also include providing elevator car identification information of the elevator car to the elevator control system for generating an elevator call to assign the elevator car to a destination floor selected by the user.

[0024] The method may further include: controlling at least one indicating device to project a second visual indication onto a surface near the door device or user, wherein the second visual indication includes elevator car identification information, and / or controlling one or more displays to display the elevator car identification information.

[0025] At least two destination floors may include: one or more default destination floors defined based on the time of day, one or more destination floors defined based on current traffic flow, and / or one or more destination floors defined based on exceptional circumstances.

[0026] The user detection step may further include identifying authorized users by using facial recognition-based identity verification based on received image data and pre-stored data associated with authorized users.

[0027] In addition, at least two destination floors may include: one or more default destination floors defined based on the time of day, one or more destination floors defined based on current traffic flow, one or more destination floors defined based on abnormal conditions, one or more default destination floors assigned to the authorized user, one or more destination floors set by the authorized user, one or more destination floors defined based on the destination floors previously selected by the authorized user, and / or destination floors defined based on events arranged for the authorized user, wherein the arranged events are obtained from an external storage unit storing the arranged events.

[0028] The various exemplary and non-limiting embodiments of the invention, as well as their additional objects and advantages, will be best understood when the following description of specific exemplary and non-limiting embodiments is read in conjunction with the accompanying drawings.

[0029] The verbs “comprising” and “including” are used in this document as open-ended restrictions, neither excluding nor requiring the presence of any undescribed features. Unless otherwise expressly stated, the features described in the dependent claims may be freely combined with each other. Furthermore, it should be understood that the use of “a” or “an” throughout the document, i.e., the singular form, does not exclude a plurality. Attached Figure Description

[0030] In the accompanying drawings, embodiments of the invention are shown by way of example and not limitation.

[0031] Figure 1An example environment according to the invention is illustrated schematically, in which different embodiments of the invention may be implemented.

[0032] Figure 2A-2C An example situation according to the present invention is illustrated schematically.

[0033] Figure 3 An example of the method according to the invention is illustrated schematically.

[0034] Figure 4 An example of a component of a control unit according to the present invention is shown schematically. Detailed Implementation

[0035] Figure 1 An example environment according to the invention is schematically illustrated, in which the access control system 100 according to the invention can be implemented. The example environment is an elevator environment, namely an elevator system 120. The elevator system 120 may include at least two elevator cars AD, an elevator control system (for clarity, ... Figure 1 (Not shown in the diagram) and according to the access control system 100 of the present invention, each elevator car travels along its respective elevator shaft. The elevator control system can be configured to control the operation of the elevator system 120, for example, to generate elevator calls to assign elevator car AD. The elevator control system can be located in the machine room of the elevator system 120 or in a floor. The access control system 100 includes at least one door device 102 allowing user 112 to pass through at least one door device 102, at least one imaging device 104 for acquiring image data, at least one sensor device 106 for acquiring sensor data, at least one indicating device 108, and a control unit 110. The invention will now be described using a single door device 102. However, the invention is not limited thereto, and the access control system 100 according to the present invention may include more than one door device 102, each door device 102 being configured to operate as will be described with reference to a single door device 102.

[0036] At least one imaging device 104 may include an optical imaging device, such as at least one camera. At least one imaging device 104 may enable the detection and / or identification of a user 112 at a distance from the door device 102. This distance may be, for example, between 0 and 10 meters from the door device 102, and preferably between 1 and 2 meters, 1 and 3 meters, or 1 and 5 meters. Figure 1 The example shown is arranged to door device 102, or near door device 102, i.e. close to door device 102, for example, arranged to a wall, ceiling and / or a separate support device.

[0037] The control unit 110 can be an external entity, or it can be implemented as part of the door device 102. Figure 1 In the example, control unit 110 is an external entity. In this document, an external entity refers to an entity located separately from door device 102. The implementation of external control unit 110 can be as a standalone entity or as part of a distributed computing environment among multiple independent devices (e.g., multiple servers providing distributed computing resources). Control unit 110 can be configured to control the operation of access control system 100. Control unit 110 can be communicatively coupled to door device 102, at least one imaging device 104, at least one sensor device 106, and at least one indicating device 108. Communication between control unit 110 and other entities in the system can be based on one or more known wired or wireless communication technologies.

[0038] Control unit 110 is configured to receive image data from at least one imaging device 104 and detect a user 112 approaching door device 102 based on the received image data. In response to detecting user 112 approaching door device 102, control unit 102 is configured to obtain destination floor information including at least two destination floors. The process of obtaining destination floor information may depend on whether user 112 is identified as an authorized user. If user 112 is not identified as an authorized user, such as any user entering the building where elevator system 120 is located, the at least two destination floors may include one or more default destination floors defined based on the time of day, one or more destination floors defined based on current traffic flow, and / or one or more destination floors defined based on anomalies, such as a fault state of one or more elevator car ADs. The at least two destination floors may be obtained from a memory or database connected to control unit 110, or from a cloud service accessible via a network connection.

[0039] According to an example of the invention, the detection of user 112 may further include identifying the authorized user using facial recognition-based identity verification based on received image data and pre-stored data associated with authorized users. Control unit 110 may be configured to determine whether image data is associated with an authorized user based on received image data and pre-stored data associated with authorized users. In other words, received image data may be compared with pre-stored data to find possible matches from the pre-stored data. The pre-stored data may be stored in a memory or database connected to control unit 110, or in a cloud service accessible via a network connection. For example, if access control system 100 is located in a building, image data associated with people who frequently reside (e.g., work or live) in the building may have already been pre-stored in a memory or database. For authorized users, destination floors may be suggested with more functionality. Furthermore, for authorized user 112, a user-specific destination floor may be obtained.

[0040] If user 112 is identified as an authorized user, at least two destination floors may include one or more default destination floors defined based on the time of day; one or more destination floors defined based on current traffic flow; one or more destination floors defined based on anomalies, such as a malfunction of one or more elevator car ADs; one or more default destination floors assigned to the authorized user; one or more destination floors set by the authorized user; one or more destination floors defined based on a destination floor previously selected by the authorized user; and / or destination floors defined based on an event scheduled for the authorized user, wherein the event is obtained from an external storage unit (e.g., a database) storing the events of the scheduled event. For example, if a meeting is scheduled for the authorized user on a specific floor, at least two destination floors may include the specific floor on which the meeting is scheduled. One or more default destination floors assigned to the authorized user may include, for example, the authorized user's home floor and / or office floor. One or more destination floors set by the authorized user may include any floor of the building predefined by the authorized user. According to one example, machine learning techniques may be used to define one or more destination floors based on a destination floor previously selected by the authorized user. At least two destination floors can be obtained from a memory or database connected to the control unit 110, or from a cloud service accessible via a network connection.

[0041] Door device 102 may include a blocking device, such as a door panel, revolving door, boom, or any other blocking device, to prevent users without the right of way through door device 102. Door device 102 may default to a state that allows unrestricted passage through door device 102. In other words, door device 102 is maintained in a state that allows unrestricted passage through door device 102. If the received image data relates to a user without the right of way through door device 102, control unit 110 may be configured to control the blocking device to prevent (i.e., restrict) passage through door device 102, for example, by closing the blocking device of door device 102. Alternatively, door device 102 may default to a state that prevents (i.e., restricts) user passage through door device 102, i.e., door device 102 may be in a closed state. If the received image data is unrelated to a user without the right of way through door device 102, control unit 110 may be configured to control the blocking device to allow passage through door device 102, for example, by opening the blocking device of door device 102.

[0042] The control unit 102 is also configured to control at least one indicating device 108 to generate a first visual indication for the user 112. The first visual indication includes at least two destination floors. The at least one indicating device 108 may include a projection device, and the generation of the first visual indication may include projecting the first visual indication onto a surface near (i.e., close to) the door device 102, for example, in front of the door device 102 from the user 112's passage direction through the door device 102, and / or along at least one assumed passage route of the user 112 through the door device 102. The first visual indication may include indicating elements 202a-202n for each of the at least two destination floors. The at least one indicating device 108 may be as follows: Figure 1 The example shown is arranged to or near door device 102, i.e., close to door device 102, for example, arranged to a wall, ceiling, and / or a separate support device. Furthermore, control unit 110 is configured to detect the destination floor selected by user 112 from at least two destination floors based on sensor data received from at least one sensor device 106. At least one sensor device 106 may include optical sensors, such as cameras, radio wave-based detection systems, such as radar, and / or indoor positioning systems. This at least one sensor device 106 may be arranged to or near door device 102, i.e., close to door device 102, for example, arranged to a wall, ceiling, and / or a separate support device. Figure 1 In the example, at least one sensor device 106 is mounted on a wall. However, the invention is not limited thereto, and at least one sensor device 106 can be arranged anywhere within the elevator environment 120 between the door device 102 and the elevator car AD traveling along the elevator shaft, such that at least one sensor device 106 can detect the destination floor selected by the user 112.

[0043] According to an example of the invention, detecting the destination floor selected by user 112 may include detecting at least partial deformation of at least one indicator element 202a-202n. At least partial deformation of at least one indicator element 202a-202n may instruct user 112 to bypass the at least one indicator element 202a-202n in order to select the destination floor included among the at least one indicator element 202a-202n. If one indicator element 202a-202n with at least partial deformation is detected, then the one indicator element 202a-202n represents the destination floor selected by user 112. Alternatively, if two or more indicator elements 202a-202n with at least partial deformation are detected, then the indicator element 202a-202n with greater deformation represents the destination floor selected by user 112, or no selection by user 112 is detected. For example, if the received sensor data indicates, for example, a 40% deformation of one indicator element 202a-202n (e.g., indicator element 202b) and, for example, a 60% deformation of another indicator element 202a-202n (e.g., indicator element 202b), the control unit 110 can detect that the user has selected the indicator element with the 60% deformation, or the control unit 110 can detect that the user 112's selection has not been detected because the user 112's selection is considered an ambiguous selection.

[0044] Figure 2A A non-limiting example scenario is shown, in which control unit 110 detects that user 112 is approaching door device 102 based on imaging data received from at least one imaging device 104. In response to detecting user 112's approach to door device 102, control unit 102 is configured to obtain destination floor information, which in this example includes three destination floors. Example destination floors are floor 8, where a café is located; floor 10, where a spa is located; and floor 4, where a meeting room is located. Furthermore, in... Figure 2A In an example scenario, the control unit 102 is also configured to control at least one indicating device 108 to project a first visual indication onto a surface near the door device 102, such as at least one assumed passage route 201 for the user 112, wherein the first visual indication comprises three indicating elements 202a-202n, i.e., one indicating element 202a-202n for each of the three destination floors in this example. Indicating element 202a is for floor 8, indicating element 202b is for floor 10, and indicating element 202c is for floor 4.

[0045] Figure 2BA non-limiting example scenario is illustrated, in which user 112 is traversing indicator element 202a, i.e., the indicator element for floor 8, such that at least partial deformation of indicator element 202a can be detected based on sensor data received from at least one sensor device 106. This detection indicates that user 112 has selected destination floor 8 from three example destination floors. Line 201 illustrates the route taken by user 112.

[0046] According to an example of the invention, control unit 110 can be configured to provide the detected destination floor selection of user 112 to an external database and / or elevator control system. The elevator control system can be configured to generate an elevator call in response to receiving the detected destination floor selection from control unit 110, to assign elevator car AD to the destination floor selected by user 112. Control unit 110 can also be configured to receive elevator car identification information of the elevator car AD for which the elevator control system generates the elevator call. This may be preferred, especially in high traffic conditions, i.e., when multiple users simultaneously use elevator system 120, such as during peak hours. In high traffic conditions, optimal allocation of elevator car AD by the elevator control system is important to reduce user waiting time.

[0047] Alternatively, control unit 110 can be configured to provide elevator car identification information of elevator car AD to the elevator control system for generating an elevator call to assign elevator car AD to the destination floor selected by user 112. This may be preferred, especially in low traffic situations, i.e., when only a few users use elevator system 120. In low traffic situations, optimal allocation is less important, allowing control unit 110 to determine which elevator car AD to assign to the destination floor selected by user 112.

[0048] The control unit 110 may also be configured to control at least one indicating device 108 to project a second visual indication onto a surface near the door device 102 or user 112, for example, in front of the user from the direction of passage of user 112, i.e., along the user 112's route 201. The second visual indication may include indicating elements 202a-202n that indicate elevator car identification information. Alternatively or additionally, when the system 100 further includes one or more displays 204, the control unit 110 may be configured to control one or more displays 204 to display elevator car identification information to user 112. This allows user 112 to be easily notified which elevator car AD has been assigned to the destination floor selected by user 112 as user 112 approaches elevator AD.

[0049] Figure 2CA non-limiting example is shown, which includes a second visual indication of elevator signage information to indicate that element 202c is projected in front of user 112. Furthermore, in Figure 2C In this example, system 100 includes a display 204 for displaying elevator car identification information to user 112. The example display 204 is arranged on a wall in an elevator corridor, but the invention is not limited thereto; one or more displays 204 can be located anywhere in the elevator corridor. Figure 2C In the example, an elevator call is generated that assigns elevator car A to the destination floor (i.e., floor 8) selected by user 112, and it is projected in front of user 112 with indicator element 202c.

[0050] Next reference Figure 3 Examples of methods according to the present invention are described. Figure 3 The invention is illustrated schematically in the form of a flowchart.

[0051] In step 302, the control unit 110 receives image data from at least one imaging device 104. In step 304, the control unit 110 detects that a user 112 is approaching the door device 102 based on the received image data.

[0052] In step 306, in response to detecting that user 112 is approaching door device 102, control unit 102 obtains destination floor information including at least two destination floors. The process of obtaining destination floor information may depend on whether the user is identified as an authorized user. If the user is not identified as an authorized user, such as any user entering the building where elevator system 120 is located, the at least two destination floors may include one or more default destination floors defined based on the time of day, one or more destination floors defined based on current traffic flow, and / or one or more destination floors defined based on abnormal conditions (such as a fault state of one or more elevator car ADs).

[0053] According to an example of the invention, the detection of user 112 in step 304 may further include identifying the authorized user by using facial recognition-based identity verification based on received image data and pre-stored data associated with authorized users. Control unit 110 may determine whether the image data is related to an authorized user based on the received image data and the pre-stored data associated with authorization. In other words, the received image data may be compared with the pre-stored data to find possible matches from the pre-stored data. The pre-stored data may be stored in a memory or database connected to control unit 110, or in a cloud service accessible via a network connection. For example, if the access control system 100 is located in a building, image data associated with people who frequently reside (e.g., work or live) in the building may have already been pre-stored in a memory or database. For authorized users, destination floors may be suggested with more functionality. Furthermore, for authorized user 112, a user-specific destination floor may be obtained.

[0054] If user 112 is identified as an authorized user, at least two destination floors may include one or more default destination floors defined based on the time of day; one or more destination floors defined based on current traffic flow; one or more destination floors defined based on anomalies, such as a malfunction of one or more elevator car ADs; one or more default destination floors assigned to the authorized user; one or more destination floors set by the authorized user; one or more destination floors defined based on a destination floor previously selected by the authorized user; and / or destination floors defined based on an event scheduled for the authorized user, wherein the event is obtained from an external storage unit (e.g., a database) storing the events of the scheduled event. For example, if a meeting is scheduled for the authorized user on a specific floor, at least two destination floors may include the specific floor on which the meeting is scheduled. One or more default destination floors assigned to the authorized user may include, for example, the authorized user's home floor and / or office floor. One or more destination floors set by the authorized user may include any floor of the building predefined by the authorized user. According to one example, machine learning techniques may be used to define one or more destination floors based on a destination floor previously selected by the authorized user. At least two destination floors can be obtained from a memory or database connected to the control unit 110, or from a cloud service accessible via a network connection.

[0055] In step 308, the control unit 102 controls at least one indicating device 108 to generate a first visual indication for the user 112. The first visual indication includes at least two destination floors obtained. The first visual indication may include indicating elements 202a-202n for each of the at least two destination floors.

[0056] In step 310, the control unit 110 detects the destination floor selected by the user 112 from at least two destination floors based on sensor data received from at least one sensor device 106. According to an example of the invention, detecting the user-selected destination floor may include detecting at least partial deformation of at least one indicator element 202a-202n. At least partial deformation of at least one indicator element 202a-202n may instruct the user 112 to pass over the at least one indicator element 202a-202n to select a destination floor included among the at least one indicator element 202a-202n. If one indicator element 202a-202n with at least partial deformation is detected, then the one indicator element 202a-202n represents the destination floor selected by the user 112. Alternatively, if two or more indicator elements 202a-202n with at least partial deformation are detected, then the indicator element 202a-202n with greater deformation represents the destination floor selected by the user 112, or no selection by the user 112 is detected.

[0057] According to an example of the invention, the method may further include the control unit 110 providing the detected destination floor selection of the user 112 to an external database and / or an elevator control system. In response to receiving the detected destination floor selection from the control unit 110, the elevator control system may generate an elevator call to assign the elevator car AD to the destination floor selected by the user 112. The control unit 110 may also receive elevator car identification information of the elevator car AD for which the elevator control system generates the elevator call. This may be preferred, especially in high-traffic situations as described above.

[0058] Alternatively, the method may also include the control unit 110 providing elevator car identification information of the elevator car AD to the elevator control system for generating an elevator call to assign the elevator car AD to the destination floor selected by the user 112. This may be preferred, especially in low traffic conditions as described above.

[0059] According to an example of the invention, the method may further include control by control unit 110 of at least one indicating device 108 to project a second visual indication onto a surface near user 112, for example in front of user 112, i.e., along user 112's route 201, wherein the second visual indication may include indicating elements 202a-202n indicating elevator car identification information. Alternatively or additionally, when system 100 further includes one or more displays 204, control unit 110 may be configured to control one or more displays 204 to display elevator car identification information to user 112. This allows user 112 to be notified in a simple manner, as user 112 is approaching elevator AD, which elevator car AD has been assigned to the destination floor selected by user 112.

[0060] Figure 4 An example of components of a control unit 110 according to the present invention is schematically shown. The control unit 110 may include a processing unit 410 containing one or more processors, a storage unit 420 containing one or more memories, a communication unit 430 containing one or more communication devices, and a possible user interface (UI) unit 450. The storage unit 420 may store portions of computer program code 425 and any other data, and the processing unit 410 may cause the control unit 110 to operate as described by executing at least some portions of the computer program code 425 stored in the storage unit 420. The communication unit 430 may be based on at least one known wired or wireless communication technology to exchange information as described above. The communication unit 430 provides an interface for communicating with any external unit, such as a door device 102, at least one imaging device 104, at least one sensor device 106 and at least one indicating device 108, an elevator control system, a database, and / or any external system. The communication unit 430 may include one or more communication devices, such as a radio transceiver, an antenna, etc. The user interface 440 may include I / O devices for receiving input and output information, such as buttons, a keyboard, a touchscreen, a microphone, a speaker, a display, etc. Computer program 425 may be stored on a non-legally tangible computer-readable medium, such as a USB stick or CD-ROM.

[0061] The specific examples provided in the description above should not be construed as limiting the applicability and / or interpretation of the appended claims. Unless otherwise expressly stated, the list and sets of examples provided in the description above are not exhaustive.

Claims

1. A access control system (100) for an elevator system (120), comprising: The door device (102) allows a user (112) to pass through the door device (102). At least one imaging device (104) is used to acquire image data. At least one sensor device (106) is used to acquire sensor data. At least one indicating device (108), and The control unit (110) is configured as follows: Receive the image data from the at least one imaging device (104). Detecting a user (112) approaching the door device (102) based on the received image data; Obtain destination floor information, including at least two destination floors; Control the at least one indicating device (108) to generate a first visual indication including the at least two destination floors; and Based on sensor data received from the at least one sensor device (106), the destination floor selected by the user (112) from the at least two destination floors is detected. If the traffic flow exceeds a threshold, the control unit (110) is configured to provide the detected destination floor selection of the user (112) to an external database and / or elevator control system. If the traffic flow is below the threshold, the control unit (110) is configured to provide the elevator car (AD) identification information to the elevator control system for generating an elevator call to assign the elevator car (AD) to the destination floor selected by the user (112).

2. The access control system (100) according to claim 1, wherein, The generation of the first visual indication includes projecting the first visual indication onto a surface near the door device (102), the first visual indication including indication elements (202a-202n) for each of the at least two destination floors.

3. The access control system (100) according to claim 2, wherein, The detection of the destination floor selected by the user (112) includes the detection of at least partial deformation of at least one indicator element (202a-202n), wherein If an indicator element (202a-202n) with at least partial deformation is detected, then the indicator element (202a-202n) represents the destination floor selected by the user (112); or If two or more indicator elements (202a-202n) with at least partial deformation are detected, the indicator element (202a-202n) with greater deformation represents the destination floor selected by the user (112), or no selection by the user (112) is detected.

4. The access control system (100) according to claim 1, wherein, The elevator control system is configured to generate an elevator call in response to receiving a detected destination floor selection from the user (112) from the control unit (110) to assign an elevator car (AD) to the destination floor selected by the user (112).

5. The access control system (100) according to claim 4, wherein, The control unit (110) is also configured to receive elevator car identification information of the elevator car (AD) and generate an elevator call for the elevator car from the elevator control system.

6. The access control system (100) according to claim 5, wherein, The control unit (110) is also configured to control the at least one indicating device to project a second visual indication onto a surface near the door device (102) or the user (112), wherein the second visual indication includes the elevator car identification information; and / or The system (100) further includes one or more displays (204), and the control unit (110) is configured to control the one or more displays (204) to display the elevator car identification information.

7. The access control system (100) according to any one of the preceding claims, wherein, The at least two destination floors include: One or more default destination floors are defined based on the time of day. One or more destination floors defined based on current traffic flow, and / or One or more destination floors defined based on abnormal conditions.

8. The access control system (100) according to any one of claims 1 to 7, wherein, The detection of the user (112) also includes identifying the authorized user by using facial recognition-based identity recognition based on received image data and pre-stored data associated with the authorized user.

9. The access control system (100) according to claim 8, wherein, The at least two destination floors include: One or more default destination floors are defined based on the time of day. One or more destination floors defined based on current traffic flow. One or more destination floors defined based on abnormal conditions One or more default destination floors are assigned to the authorized user. One or more destination floors set by the authorized user Based on one or more destination floors defined by the authorized user's previously selected destination floor, and / or The destination floor is defined based on the events scheduled for the authorized user, wherein the scheduled events are obtained from an external storage unit storing the scheduled events.

10. An elevator system (120), comprising: There are at least two elevator cars (AD), each traveling along its own elevator shaft. Elevator control system, and The access control system (100) according to any one of the preceding claims includes at least one door device (102).

11. A method for controlling a traffic control system (100) according to any one of claims 1 to 10, the method comprising: Image data (302) is received from at least one imaging device (104). Based on the received image data, detect (304) the user (112) approaching the door device (102); Obtain (306) destination floor information including at least two destination floors; Control (308) at least one indicating device (108) to provide a first visual indication including the at least two destination floors; and Based on sensor data received from at least one sensor device (106), the destination floor selected by the user (112) from the at least two destination floors is detected (310). If the traffic flow exceeds the threshold, the destination floor selection of the detected user (112) will be provided to an external database and / or elevator control system. If the traffic flow is below the threshold, the elevator car (AD) identification information is provided to the elevator control system to generate an elevator call to assign the elevator car (AD) to the destination floor selected by the user (112).

12. The method according to claim 11, wherein, Providing (308) the first visual indication includes projecting the first visual indication onto a surface near the door device (102), the first visual indication including indication elements (202a-202n) for each of the at least two destination floors.

13. The method according to claim 12, wherein, Detecting (310) the destination floor selected by the user includes detecting at least a partial deformation of at least one indicator element (202a-202n), wherein If an indicator element (202a-202n) with at least partial deformation is detected, then the indicator element (202a-202n) represents the destination floor selected by the user (112); or If two or more indicator elements (202a-202n) with at least partial deformation are detected, the indicator element (202a-202n) with greater deformation indicates the destination floor selected by the user (112), or no selection by the user is detected.

14. The method of claim 11, further comprising generating an elevator call in response to receiving a detected destination floor selection by the user (112) to assign an elevator car (AD) to the destination floor selected by the user (112).

15. The method of claim 14, further comprising receiving elevator car identification information of an elevator car (AD) and generating an elevator call for the elevator car from the elevator control system.

16. The method of claim 15, further comprising: Control the at least one indicating device (108) to project a second visual indication onto a surface near the door device (102) or the user (112), wherein the second visual indication includes the elevator car identification information, and / or Control one or more displays (204) to display the elevator car identification information.

17. The method according to any one of claims 11 to 16, wherein, The at least two destination floors include: One or more default destination floors are defined based on the time of day. One or more destination floors defined based on current traffic flow, and / or One or more destination floors defined based on abnormal conditions.

18. The method according to any one of claims 11 to 16, wherein, The step of detecting (304) the user (112) further includes identifying the authorized user by using facial recognition-based identity recognition based on the received image data and pre-stored data associated with the authorized user.

19. The method according to claim 18, wherein, The at least two destination floors include: One or more default destination floors are defined based on the time of day. One or more destination floors defined based on current traffic flow. One or more destination floors defined based on abnormal conditions One or more default destination floors are assigned to the authorized user. One or more destination floors set by the authorized user Based on one or more destination floors defined by the authorized user's previously selected destination floor, and / or The destination floor is defined based on the events scheduled for the authorized user, wherein the scheduled events are obtained from an external storage unit storing the scheduled events.

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