Call-source-dependent control of an elevator display device
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2026-04-08
AI Technical Summary
In elevator systems, users often become confused when multiple calls are made from the same floor, leading to delays in boarding as they struggle to identify which elevator car is serving their call, especially with both on-site and remote call entries.
An elevator system with communicatively connected elevator control devices and display devices that receive control signals indicating the source of the call, allowing the display devices to visibly differentiate between on-site and remote calls using various indicators, such as symbols or colors, to help users identify the correct elevator.
Enhances user friendliness by clearly indicating the origin of the elevator call, reducing confusion and speeding up the boarding process by allowing users to recognize their assigned elevator more quickly, even in situations with multiple simultaneous calls.
Smart Images
Figure EP2024064074_05122024_PF_FP_ABST
Abstract
Description
[0001] Call source dependent control of an elevator display device
[0002] Description
[0003] The technology described here generally relates to an elevator system in a building. Embodiments of the technology particularly relate to an elevator system with an elevator operating device and a method for operating such an elevator system.
[0004] In a building with an elevator system, elevator control devices are located on the floors served by the elevator system, with which a person can initiate an elevator call. These elevator control devices can have up / down buttons so that the person on a floor can enter the desired direction of travel. Alternatively, the elevator control devices can be designed in such a way (e.g., have a keypad or a touch-sensitive screen) that the person can enter a desired destination floor. By entering the direction of travel or the destination floor, an elevator call is registered (in the case of up / down buttons, a direction call, otherwise a destination call). Furthermore, it is known that a person can use their appropriately configured mobile phone to enter an elevator call.In addition, elevator display devices are provided on the floors, for example, located above shaft doors so that they are visible to people standing on the floors in front of them. Such an elevator display device indicates, for example, the position, direction of travel, and / or the arrival of an elevator car responding to an elevator call. Elevator systems with such elevator display devices are disclosed, for example, in US 10,414,627 B1 and US 2018 / 0257909 A1.
[0005] An elevator system can allow the entry of an elevator call using both an elevator control device and a mobile phone; it can also have one or more elevator cars ("elevators"), with several elevators being arranged in one or more elevator groups. In such an elevator system, it can happen that, particularly when there are several elevator calls from people on one floor, people become confused and may delay boarding because they cannot clearly identify which elevator car serves which elevator call. Therefore, there is a need for a technology for
[0006] Elevator system in which this problem is completely or at least partially eliminated.
[0007] One aspect of the technology described here relates to an elevator installation having an elevator control system communicatively connected to a communication interface device and a communication network. An elevator car is movable between floors under the control of the elevator control system. The elevator installation also has elevator operating devices communicatively connected to the communication network and arranged on the floors for inputting elevator calls, and elevator display devices communicatively connected to the communication network and assigned to the elevator car on the floors. The elevator display devices are arranged separately from the elevator operating devices and are configured to receive control signals from the elevator control system via the communication network.The elevator control is configured to receive a first elevator call originating from an elevator operating device on a call-input floor via the communications network, wherein this elevator operating device represents a first call source. The elevator control is further configured to receive an elevator call originating from a mobile communication device on a call-input floor via the communications interface device, wherein this mobile communication device represents a second call source. The elevator control is configured to generate a control signal for the elevator display device, which is assigned to the elevator car serving the elevator call on the call-input floor, and to transmit it to this elevator display device. The control signal indicates the first or second call source.The elevator display device is designed to communicate, upon receipt of the control signal, an indicator perceptible on the call input floor which identifies the call source specified in the control signal.
[0008] Another aspect of the technology relates to a method for operating the elevator system. The method comprises receiving an elevator call by the elevator control, determining an elevator serving the elevator call by the elevator control, and determining an origin of the elevator call by the elevator control. Upon receipt of the elevator call via the communications network, an elevator operating device on a call input floor represents a first call source, and upon receipt of the elevator call via the communications interface device, a mobile communications device on a call input floor represents a second call source. The method further comprises generating a control signal for the elevator display device, which is assigned to the elevator car serving the elevator call on the call input floor, and sending the control signal to this elevator display device.The control signal indicates whether the elevator call originates from the first or second call source. The method further includes activating the elevator display device upon receipt of the control signal to communicate an indicator perceptible at the call input floor that identifies the first or second call source.
[0009] The technology described here creates an elevator system in which an elevator display device on a call-input floor not only perceptibly communicates (in particular, visibly indicates) the elevator car serving an elevator call, but also whether the elevator car is serving a local call or a remote call. An indicator serves for communication. In one embodiment, the elevator display devices are arranged above shaft doors; on the call-input floor, the elevator display device displays the indicator, which a person on the call-input floor can perceive. This helps the person better and possibly faster identify the elevator car serving their elevator call. The additional information provided makes the elevator system more user-friendly overall.
[0010] There is essentially freedom of design regarding the indicator. The indicator can include a symbol, an alphanumeric character, a pictogram, a color, an acronym, and / or a word. For example, a largely self-explanatory symbol or pictogram can be specified as the indicator; a symbol or pictogram for a radio transmission or a mobile phone can indicate a remote call, or a symbol or pictogram for a keypad can indicate a manual call input on an elevator control device for an on-site call.
[0011] The technology described here is not limited to a specific control technology of the elevator system. In one embodiment, the elevator control comprises a destination call control, wherein each elevator call indicates a destination floor. The elevator operating devices and the mobile communication device are configured to send an input destination floor to the elevator control as an elevator call. The generated control signal additionally indicates the destination floor, and the elevator display device is configured to perceptibly communicate the destination floor in conjunction with the indicator. In another embodiment, the elevator control comprises a direction control, wherein the elevator operating devices and the mobile communication device are configured to send an input direction of travel to the elevator control as an elevator call.
[0012] In one embodiment, the communication interface device is configured to receive a radio signal according to a specified standard for mobile radio communication. The mobile communication device transmits and receives radio signals according to this standard. The standard is, in particular, an ETSI standard for mobile radio communication (e.g., GSM, 3G / UMTS, 4G / LTE, 5G), according to which commercially available mobile radio devices communicate.
[0013] Various aspects of the improved technology are explained in more detail below using exemplary embodiments in conjunction with the figures. In the figures, like elements have like reference numerals. They show:
[0014] Fig. 1 is a schematic representation of an exemplary elevator system in a building with several floors;
[0015] Fig. 2 is a schematic representation of an exemplary situation in an elevator hall on one floor; and
[0016] Fig. 3 is an exemplary representation of an embodiment of a method for operating the elevator system.
[0017] Fig. 1 is a schematic representation of an exemplary elevator installation 1 in a building 2 having several floors LI, Ln served by the elevator installation 1. The floor LI can be an entrance hall of the building 2, into which passengers Pl, P2 reach upon entering the building 2 and from which they leave the building 2 again. If a passenger Pl, P2 enters the floor LI, from there - with the appropriate access authorization - every floor LI, Ln of the building 2 can be reached with the elevator installation 1. The elevator installation 1 shown has two elevator cars 10, which may also be referred to as "elevators" below. For reasons of illustration, only an elevator control 13 (EC, CTRL), two drive machines 14 (DR), suspension means 16 (e.g.Steel cables or flat belts), a communication interface device 30 (in particular for mobile radio communication) and a number of elevator display devices 3 and elevator operating devices 5 are shown, which are communicatively connected to the elevator control 13 via a communication network 22. The person skilled in the art will recognize that the elevator installation 1 can also comprise one or more than two elevator cars 10 (as indicated by dots in Fig. 1), wherein several elevator cars 10 can be movable in one or more shafts 18 and controlled by a group control system. Instead of traction elevators shown in Fig. 1, the elevator installation 1 can also have one or more hydraulic elevators.
[0018] In the embodiment shown in Fig. 1, an elevator operating device 5 is arranged on each floor LI, Ln, at which a passenger Pl, P2 can enter an elevator call and thus call an elevator to floor LI, Ln. The floor LI, Ln, on which the person Pl, P2 is located and calls the elevator, is also referred to as the call input floor. The elevator operating device 5 can be equipped with a keypad, a touch-sensitive screen system, or a device for contactless detection of an authorization credential 6 for call input, whereby the elevator operating device 5 can be equipped for both contact-based and contactless input. During such a call input, the person Pl, P2 is essentially in the immediate vicinity of the elevator operating device 5; such an elevator call is also referred to below as an "on-site call" to distinguish it from a distance call referred to below. In Fig.1, the person P 1 uses, for example, an authorization proof 6 (represented in the form of a credit card) in connection with the call input.
[0019] Additionally, in the elevator system 1 shown, an elevator call can be entered using a mobile electronic device 4 (hereinafter referred to as mobile radio device 4). When entering such a call, the person P1, P2 is located on the call entry floor, but not in the immediate vicinity of an elevator operating device 5; such an elevator call can also be referred to as a remote call. In Fig. 1, the person P2 uses their mobile radio device 4 to enter a remote call.
[0020] Exemplary configurations and functionalities of the elevator operating device 5, the mobile radio device 4, and the authorization credential 6 are specified elsewhere in this description. Both the elevator operating device 5, at which passenger P1 enters the elevator call, and the mobile radio device 4, with which passenger P2 enters the elevator call, can also be referred to below as call sources.
[0021] The elevator installation 1 can be equipped with an up / down control or with a destination call control. The person skilled in the art will recognize that mixed forms of the aforementioned control technologies are also possible. If the elevator installation 1 is equipped with an up / down control, elevator operating devices 5 are arranged on the floors LI, Ln, at which a desired direction of travel (i.e., a directional call) can be entered. Furthermore, it can be provided that a mobile radio device 4 can be used to enter a directional call. The desired destination floor is then entered in the car 10 at an elevator operating device arranged there (not shown in Fig. 1); this input of the destination floor in the car 10 can also be referred to as a car call.If the elevator system 1 is equipped with a destination call control, elevator operating devices 5 are located on floors LI, Ln, where a desired destination floor can be entered. A destination call is then registered as an elevator call. It can also be provided that a mobile radio device 4 can be used to enter a destination call. After entering the destination floor, information about the call input floor (boarding floor) and the destination floor is available. The call input floor is determined, for example, from the location of the elevator operating device 5 (e.g., from a building plan) where the destination floor is entered.
[0022] After a call is entered, in the embodiment shown in Fig. 1, an elevator car 10 is selected to serve the elevator call. If it is not yet at the boarding floor, the selected elevator car 10 is moved to the boarding floor. Depending on the control technology implemented in the elevator system 1, the selected elevator car 10 is displayed on the elevator operating device 5 or the mobile radio device 4 (for example, in the case of destination call control), or the corresponding elevator display device 3 is controlled to generate an audible and visible message upon the arrival of the elevator car 10 at the boarding floor (for example, in the case of up / down control).
[0023] The following description of the technology disclosed herein is essentially based on the elevator installation 1 shown in Fig. 1, which is equipped with a destination call control system by way of example. The functionality of the destination call control system is represented in the illustrated embodiment by a control device (CTRL) 8, which, in addition to a control unit 12, is also assigned to the elevator control system 13. In this description, the term "destination call control system" refers to components (e.g., computers, processors, memory devices) and associated control and computer programs that execute the functions described below and / or are involved in their execution. The control device 8 is shown in Fig. 1 as representative of these components and control and computer programs. Those skilled in the art will recognize that one or more functions of the destination call control system can be executed in or by one or more elevator operating devices 5.The destination call control system executes an allocation procedure, the principle of which is described, for example, in the following publication: Koehler, Jana, et al., An AI-Based Approach to Destination Control in Elevators, AI Magazine, Vol. 23, No. 3, 2002, pp. 59-78. Upon receipt of a destination call, from which the call input floor and the destination floor are input, the allocation procedure uses so-called job managers, calculates "costs," and applies one or more cost functions to determine the elevator that can best serve the elevator call, i.e., most cost-effectively, from "offers" of elevators that could serve an elevator call.
[0024] In one embodiment, the control device 8 or its functionality can be implemented entirely or partially in the elevator control 13. If the elevator system 1 comprises one or more groups of elevators, the functionality of the destination call control can be implemented entirely or partially in a group control, for example, implemented in the control unit 12.In one embodiment, the destination call control assigns a received elevator call (destination call) of a person P1, P2 to one of, for example, several elevator cars 10 present in the elevator installation 1 and communicates the corresponding allocation information via a communication network 24 to the control unit 12, which controls the movement of the assigned elevator car 10, and via the communication network 22 to the elevator operating device 5, at which the person P1 is located when the call is entered, or via the mobile radio communication network 31 to the mobile device 4, which the person P2 uses when the call is entered.
[0025] Fig. 2 shows a schematic representation of an exemplary situation in an elevator hall on a floor, for example on floor LI. In this exemplary embodiment, the elevator installation 1 is equipped with destination call control technology. In this situation, three elevators A, B, C are shown, with an elevator display device 3 arranged above each of the elevators A, B, C, without, however, being limited to this arrangement. The people P1, P2 are located in the elevator hall, each of whom has already entered an elevator call. The person P1 has entered the elevator call (on-site call) in conjunction with their authorization credential 6 on the elevator operating device 5, for example to travel to floor L4; the destination floor can be, for example,be stored on the credential 6 or in conjunction with a user profile in the elevator control 13 or a building management system; alternatively, the destination floor can be entered after presenting the (valid) credential 6 on the elevator operating device 5, which is then enabled for call input.
[0026] Person P2 has entered the elevator call (distance call) using their mobile device 4, for example, to travel to floor Ln. The mobile device 4 is equipped for communication via a mobile communication network 31 according to an ETSI standard for mobile communication, e.g., GSM, 3G / UMTS, 4G / LTE, 5G, or a future standard; the communication interface device 30 is equipped to complement this. Such communication is illustrated by way of example in Fig. 1: the communication interface device 30 communicates with the mobile device 4 via the mobile communication network 31, which is indicated by several double arrows. The mobile device 4 is additionally equipped with a software application (app) for elevator operation. The app can, for example, generate a graphical user interface that displays the mobile device 4 to enable interaction with the mobile device 4.The location of the mobile device 4 can be determined using known positioning methods. For example, the mobile device 4 can transmit its position determined via GPS to the elevator control 13. Alternatively, the mobile device 4 can detect an optical code (e.g., a QR code) arranged on a carrier material on the floor and send it to the elevator control 13. The location of the carrier material or the optical code can be documented in a building plan. It is also possible for a radio device, the position of which can also be documented in a building plan, to be arranged on the floor. The radio device can, for example, transmit a radio signal using WLAN or Bluetooth technology. The mobile device 4 detects a password contained in the radio signal and sends it to the elevator control 13.The elevator control 13 determines the call input floor using the received optical code or password, for example in conjunction with the building plan.
[0027] In the illustrated embodiment, after receiving the elevator calls from persons P1, P2, the elevator control 13 has selected (assigned) elevators A and C, for example, to serve the elevator calls. Accordingly, the elevator control 13 generates control signals and thereby controls the elevator display devices 3 of the assigned elevators A and C. According to the technology described here, the elevator display devices 3 are controlled in such a way that they not only display or announce that the respective elevator A, C has been selected or has arrived at the floor or is on its way there, but also indicate whether the elevator A, C is serving a remote call or an on-site call. Thus, the origin of an elevator call is displayed, with the information regarding the call source being contained in the control signal that the elevator control 13 sends to the corresponding elevator display device 3.
[0028] In Fig. 2, the different control of the elevator display devices 3 with respect to the different call sources or call types (distance call and on-site call) is illustrated by way of example by different indicators that the elevator display devices 3 display. The elevator display device 3 above elevator A displays a radio symbol 4a as an indicator. This indicates that elevator A is servicing a distance call originating from the mobile phone 4 (call source) on this floor. In addition, the floor Ln that elevator A is traveling to can be displayed in a display area 4b. In the embodiment in Fig. 2, a horizontal arrow is also shown. The display shown indicates that elevator A is servicing a distance call and is traveling to floor Ln.
[0029] The elevator display device 3 above elevator C displays a map symbol 6a as an indicator. This indicates that elevator C is servicing a call that was entered via an elevator control device 5 (call source). In addition, in this exemplary embodiment, a horizontal arrow and the destination floor L4 can also be displayed in a display area 6b. This indicates that elevator C is servicing a call entered via the elevator control device 5 and is approaching floor L4.
[0030] Fig. 2 also indicates that additional information can be displayed in a display area 9 to inform the persons P1, P2 on floor L1. For example, the position of the elevator car 10, its direction of travel and / or load (e.g., number of persons or degree of load (low or high)), and / or an operating mode of the elevator system 1 (e.g., energy-saving mode, standby, out of service, maintenance, cleaning) can be displayed.
[0031] In another exemplary embodiment, the elevator system 1 is equipped with an up / down control. In this case, the persons Pl, P2 on floor LI simply enter the desired directions of travel as a local call or remote call on the elevator operating device 5 or the mobile radio device 4. The determination of the standard or call input floor is carried out as described above. Each person Pl, P2 then enters the desired destination floor in the respective elevator car 10. In this exemplary embodiment, the elevator display devices 3 also each display the indicator (radio symbol 4a or map symbol 6a), but without a destination floor.
[0032] The design (e.g., as a display device with an LED matrix display or an LED / LCD screen) and control of the elevator display devices 3 are known to those skilled in the art. Those skilled in the art will also recognize that the indicators (4a, 6b), display areas 4b, 6b, 9 shown in Fig. 2, their designs (including sizes and possibly color and animated designs), and arrangements are exemplary and not limited thereto. In other exemplary embodiments, the indicator can comprise, for example, an alphanumeric character, a pictogram, a color, an acronym, and / or a word. A call confirmation that the person P1, P2 receives at the elevator operating device 5 or at the mobile radio device 4 can, for example, be designed in color; the displayed indicator can then be designed in the same color.
[0033] With an understanding of the above-described basic system components of the elevator installation 1 and their functionalities, the following description, based on Fig. 3, of an exemplary method for operating the elevator installation 1 shown in Fig. 1. Fig. 3 shows an exemplary flowchart of the method; it begins in a step S1 and ends in a step S8. Those skilled in the art will recognize 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.
[0034] The method is described with reference to the elevator installation 1 shown in Fig. 2, which is equipped with destination call control technology, with the persons P1, P2 located on floor L1. At the elevator operating device 5 located there, the person P1 enters a travel request (elevator call) to floor L4 (with or without using the authorization credential 6) in order to be transported from the call input floor L1 to the destination floor L4 by an elevator. Similarly, the person P2 uses their mobile device 4 to enter the call; they wish to be transported from the call input floor L1 to the destination floor Ln by an elevator. Those skilled in the art will recognize that the elevator calls of the persons P1, P2 can occur essentially simultaneously or at different times.
[0035] In step S2, an elevator call is received. The elevator controller 13 receives the elevator call either via the communication interface device 30 or the communication network 22.
[0036] In a step S3, an elevator A, B, C is determined which can best serve the received elevator call. The elevator control 13 uses the allocation method mentioned above, for example, for this purpose. In a step S4, it is determined whether the received elevator call originates from an elevator operating device 5 (on-site call) or a mobile radio device 4 (distance call), i.e. the origin or source of the elevator call (call source) is determined. In one embodiment, the elevator control 13 checks whether the elevator call is received via the communication interface device 30 or the communication network 22. If the elevator call is received, for example, via the communication interface device 30 (i.e. it is a distance call with the mobile radio device 4 as the call source), the elevator call includes a device-specific and / or person-specific identifier which identifies the mobile radio device 4 orwhich uniquely identifies the person P2, and data that directly indicates the location or from which the elevator control 13 can determine the location. However, if the elevator call is received via the communications network 22 (i.e., it is an on-site call with the elevator operating device 5 as the call source), the elevator call includes, for example, an identifier for the elevator operating device 5, from which the location (call input floor) of the elevator operating device 5 can be determined.
[0037] In step S5, a check is made to determine whether the call is an on-site call. If so, the method proceeds along the "yes" branch to step S6; otherwise, it proceeds along the "no" branch to step S7. Those skilled in the art will recognize that, in another embodiment, step S5 can be used to check whether the call is a distance call; subsequent steps are then adapted accordingly.
[0038] In step S6, the elevator display device 3 is activated, which is assigned to elevator C, which serves the elevator call according to step S3. The elevator control system 13 generates a control signal for this purpose and thus controls this elevator display device 3. The control signal includes data that causes the elevator display device 3 to visibly display an indicator. In Fig. 2, this indicator is shown as a card symbol 6a; it visibly indicates that elevator C is serving an on-site call.
[0039] In step S7, the elevator display device 3, which is assigned to elevator A, which serves the elevator call according to step S3, is also activated. The control signal generated for this purpose includes data that causes the elevator display device 3 to visibly display an indicator. In Fig. 2, this indicator is shown as a radio symbol 4a; it visibly indicates that elevator A is serving a remote call.
[0040] The display of the indicators according to steps S6 and S7 helps people P1, P2 better and possibly even more quickly identify the elevator A, C assigned to them. Especially when several elevators arrive or are ready for boarding at essentially the same time, the risk of people P1, P2 becoming confused and boarding the wrong elevator is reduced. Furthermore, the boarding process can be more efficient and faster, because people P1, P2 can, for example, already stand in front of the respective elevator.
[0041] Further details of the elevator installation 1 shown in Fig. 1 are given below. The communication network 22 connects the floor-side elevator operating devices 5 to the elevator control 8 and thereby enables communication between the elevator control 8 and the elevator operating devices 5. For this communication, the elevator operating devices 5 and the elevator control 8 can be connected directly or indirectly to the communication network 22. The communication network 22 can comprise a communication bus system, individual data lines, or a combination thereof. Depending on the implementation of the communication network 22, the elevator control 8 and each elevator operating device 5 can be assigned individual addresses and / or identifiers so that, for example, the elevator control 8 can send a message specifically to a desired elevator operating device 5.Communication can take place according to a protocol for wired communication, such as the Ethernet protocol. In one embodiment, the elevator operating devices 5 are supplied with electrical energy via the communication network 22.
[0042] The elevator operating device 5 can be configured in various ways; in particular, it can be configured for one or more types of authorization credentials 6. An authorization credential 6 is typically assigned to a person Pl, P2 or group of persons in the building system (e.g., in a database for user profiles) and must be presented by the person Pl, P2 at the entrance to a restricted-access zone, e.g., for using the elevator system 1. The authorization credential 6 can be stored as a password (code) on an information carrier (e.g., in a chip of a chip card, a magnetic stripe of a magnetic stripe card, or a memory of a mobile phone) or displayed (e.g., as an optical code in the form of a QR code, a barcode, or a color code, which can be displayed, for example, on card-shaped carriers or a screen of a mobile phone).In one embodiment, the credential 6 may be a biometric feature, e.g., a fingerprint pattern or a facial pattern of the person Pl, P2.
[0043] The elevator operating device 5 can be adapted to the authorization credential(s) 6 to be used in building 2. In one embodiment, the elevator operating device 5 can have an optical reading device (e.g., a digital camera) to capture, for example, an optical code from an information carrier. The information carrier can be configured, for example, in the form of a credit card-shaped employee ID card or similar; in another embodiment, a mobile phone (or a similar electronic device) of the person P1, P2, which displays the optical code on a screen, serves as the information carrier. The digital camera can be used in one embodiment to capture a biometric authorization credential 6.The captured biometric credential 6 can then be used in conjunction with a recognition device and stored biometric data of persons Pl, P2 registered in building 2 to determine access authorization, e.g., by means of facial recognition.
[0044] Additionally or alternatively, the elevator operating device 5 may comprise a radio-based reading device that reads the authorization credential 6, for example, from a chip of an RFID transponder. An employee ID card or similar device, or a mobile phone, can serve as the RFID transponder. In one embodiment, the radio-based reading device can be configured for communication with the mobile phone or similar device using near-field communication (NFC) or Bluetooth technology. In one embodiment, the mobile phone transmits the (electronic) authorization credential 6 to the radio-based reading device using Bluetooth technology as soon as the mobile phone is within radio range of the reading device.A person skilled in the art will recognize that the credential 6 represents the information used to verify access authorization, regardless of the type of information (code or biometric feature) and the design of any information carrier. The figures show, for example, a card-shaped information carrier on which the credential 6 is stored or displayed.
Claims
Patent claims 1. Elevator installation (1), comprising: an elevator control (13) communicatively connected to a communication interface device (30) and a communication network (22); an elevator car (10) movable between floors (LI, Ln) under the control of the elevator control (8); Lift operating devices (5) which are communicatively connected to the communication network (22) and arranged on the floors (LI, Ln) for inputting lift calls; Elevator display devices (3) that are communicatively connected to the communication network (22) and assigned to the floors (LI, Ln) of the elevator car (10) and arranged separately from the elevator operating devices (5), wherein the elevator display devices (3) are configured to receive control signals from the elevator control (13) via the communication network (22); wherein the elevator control (13) is configured to receive an elevator call originating from an elevator operating device (5) on a call input floor (LI, Ln) via the communication network (22), wherein this elevator operating device (5) represents a first call source, wherein the elevator control (13) is configured to receive an elevator call originating from a mobile communication device (4) on a call input floor (LI, Ln) via the communication interface device (30), wherein this mobile communication device (4) represents a second call source,and wherein the elevator control (13) is configured to generate a control signal for the elevator display device (3) assigned to the elevator car (10) serving the elevator call on the call input floor (LI, Ln), and to send it to this elevator display device (3), wherein the control signal indicates whether the elevator call originates from the first or the second call source, and wherein the elevator display device (3) is configured, upon receipt of the control signal, to communicate an indicator (4a, 6a) perceptible on the call input floor (LI, Ln), which identifies the first or the second call source.
2. Elevator installation (1) according to claim 1, wherein the indicator (4a, 6a) comprises a symbol, a alphanumeric character, a pictogram, a color, an acronym and / or a word.
3. Elevator installation (1) according to claim 1 or 2, wherein the elevator control (13) comprises a destination call control (8), wherein each elevator call indicates a destination floor (LI, Ln), wherein the elevator operating devices (5) and the mobile communication device (4) are designed to send an entered destination floor (LI, Ln) as an elevator call to the elevator control (13), wherein the control signal additionally indicates the destination floor (LI, Ln), and wherein the elevator display device (3) is designed to perceptibly communicate the destination floor (LI, Ln) in conjunction with the indicator (4a, 6a).
4. Elevator installation (1) according to claim 1 or 2, wherein the elevator control (13) comprises a direction control (12), wherein the elevator operating devices (5) and the mobile communication device (4) are designed to send an input direction of travel as an elevator call to the elevator control (13).
5. Elevator installation (1) according to one of the preceding claims, wherein the communication interface device (30) is designed to receive a radio signal according to a specified standard for mobile radio communication.
6. Method for operating an elevator installation (1) according to one of claims 1 - 5, comprising: Receiving an elevator call by the elevator control (13); Determining an elevator (10, A, B, C) serving the elevator call by the elevator control (13); Determining an origin of the elevator call by the elevator control (13), wherein upon receipt of the elevator call via the communication network (22), an elevator operating device (5) on a call input floor (LI, Ln) represents a first call source, and wherein upon receipt of the elevator call via the communication interface device (30), a mobile communication device (4) on a call input floor (LI, Ln) represents a second call source; Generating a control signal for the elevator display device (3) which is assigned on the call input floor (LI, Ln) to the elevator (10, A, B, C), and sending the control signal to this elevator display device (3), wherein the control signal indicates whether the elevator call originates from the first or the second call source; and Activating the lift display device (3) to communicate, upon receipt of the control signal, an indicator (4a, 6a) perceptible on the call input floor (LI, Ln) which identifies the first or the second call source.
7. The method according to claim 6, wherein the indicator (4a, 6a) comprises a symbol, an alphanumeric character, a pictogram, a color, an acronym and / or a word.
8. The method according to claim 6 or 7, wherein each elevator call input on the call input floor (LI, Ln) indicates a destination floor (LI, Ln), wherein the control signal additionally indicates the destination floor (LI, Ln) and wherein the elevator display device (3) perceptibly communicates the destination floor (LI, Ln) in conjunction with the indicator (4a, 6a).
9. Method according to claim 6 or 7, wherein each elevator call entered on the call input floor (LI, Ln) indicates a direction of travel.
10. The method according to any one of claims 6 - 9, wherein the communication interface device (30) is configured to receive a radio signal according to a specified standard for mobile radio communication.