LIFT SYSTEM FOR SERVING PUBLIC AND NON-PUBLIC BUILDING ZONES

Description

[0001] 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 access control function and a method for operating such an elevator system.

[0002] Access to a building or access to restricted areas within the building can be controlled in various ways. For example, an access control system can unlock a physical barrier (e.g., a door, barrier, or gate) and release it to a user if the user presents valid credentials; depending on the technology used in the access control system, this could be, for example, a key, an access code (PIN), an optical code (barcode, QR code, color code). It is known from EP 2 588 399 B1 that an access control function can also be implemented in conjunction with an elevator system. KR 2009 0019620 A discloses an elevator system and a method according to the preamble of claims 1 and 7, which serves both private and public areas of a building. To separate passengers according to their access authorization for specific floors, the cabin comprises an internal partition wall.

[0003] Although the approaches mentioned control access to a building or its restricted areas, a building may require additional control functionality without requiring extensive changes to the building or its infrastructure. Therefore, there is a need for a technology that fully or at least partially meets this requirement.

[0004] One aspect of the technology described here relates to an elevator system having an elevator control system, at least one elevator car, and a number of shaft doors. The elevator car is movable between floors of a building in an elevator shaft under the control of the elevator control system and has two car doors: a first car door on a first car wall and a second car door on a second car wall. The shaft doors separate the elevator shaft from the floors, with a first group of shaft doors being arranged in public areas of the building and a second group of shaft doors being arranged in non-public areas of the building. The elevator control system has a first operating mode and a second operating mode. In the first operating mode, the elevator control system is configured to move the elevator car between the floors and to serve the public areas.On a floor to be served, the elevator control system controls the opening of the car door that causes the shaft door located in the public zone on that floor to be served to open. In the second operating mode, the elevator control system is designed to move the elevator car between floors to serve the non-public zones. On a floor to be served, the elevator control system controls the opening of the car door that causes the shaft door located in the non-public zone on that floor to be served to open.

[0005] A further aspect of the technology described here relates to a method for operating an elevator system. The elevator system is configured as described in the previous paragraph. The method comprises operating the elevator control system according to a first operating mode or a second operating mode. In the first operating mode, the elevator car is moved between floors under the control of the elevator control system in order to serve the public zones. The elevator control system controls the opening of the car door on a floor to be served, which causes the shaft door located in the public zone on the floor to be served to open.In the second operating mode, the elevator car is moved between the floors under the control of the elevator control system in order to serve the non-public zones, whereby the elevator control system on a floor to be served controls the opening of the car door which, on the floor to be served, causes the shaft door located in the non-public zone there to be opened.

[0006] The technology described here makes it possible to equip an elevator system with an access control function that is alternative to the state of the art. The elevator control system has a first operating mode and a second operating mode and can switch between these two operating modes. In the first operating mode, the elevator control system moves the elevator car only to and from floors with public zones, and in the second operating mode, the elevator control system moves the elevator car only to and from floors with non-public zones. This allows a floor in the building to be designated as an access control floor; this floor could be, for example, a company's reception area or a hotel reception desk.For example, a passenger who enters the building via a public zone and places an elevator call there can initially only be transported by the elevator system to another public zone, specifically the access control floor. After being registered in the reception area or reception, they can proceed to the non-public zone on the access control floor, from where they can be transported to a desired floor in the building.

[0007] The technology described here also makes it possible to serve the access control floor in the manner described above without the need for an additional shuttle elevator that only serves the floors with public zones. These two operating modes allow the same elevator (and thus, for example, the same elevator shaft) to be used both for travel between floors with public zones and for travel between floors with non-public zones. Since no shuttle elevator is required, less space is required in the building for the elevator system. The building can then be planned and constructed with a smaller footprint, for example, or the space no longer required can be made available for another use. The smaller space required by the elevator system, for example, gives architects more freedom in the planning and design of buildings.

[0008] In one embodiment, the access control function is supported by the fact that switching between the two operating modes is only possible if a status signal generated by a monitoring device indicates that no passenger is present in the elevator car. This means that in one embodiment, it can be checked whether the elevator car is empty before switching the operating mode. In one embodiment, the monitoring device is arranged in the elevator car.

[0009] In one embodiment, an information unit is arranged in the elevator car and is communicatively connected to the elevator control system. The information unit, controlled by the elevator control system, generates a notification, in particular an audiovisual notification, prompting the passenger to exit the elevator car, for example, when the elevator car reaches the destination floor and the elevator control system needs to change the operating mode.

[0010] In one embodiment, the information unit generates a notification informing the passenger that only floors with public zones, in particular the access control floor, are served. Such a notification occurs, for example, when the passenger enters the elevator car from a public zone. The notification can also inform or request the passenger to go to the reception desk.

[0011] In addition to or as an alternative to notifying the passenger in the elevator car, one embodiment allows the passenger to be notified while still in the public area on a floor. These options for notifying the passenger support the passenger in using the elevator system and navigating the building.

[0012] The technology described here is not limited to an elevator system with a single elevator; it can also be used in conjunction with an elevator group or multiple elevator groups. In one embodiment, the elevator system has a group of elevators, wherein one elevator of this elevator group comprises at least one elevator car, and the remaining elevators of the group each have an elevator car with a first and a second car door. In this embodiment, each elevator car thus has a car door on two car walls. In one embodiment, the elevators of the elevator group are arranged next to one another in a row in the building.

[0013] In one embodiment, not all elevator cars in an elevator group are equipped with such two car doors. The technology described here allows for design flexibility in this regard, enabling cost savings without limiting the access control function provided by the technology.

[0014] In an elevator group, the arrangement of the elevators is not limited to the aforementioned arrangement in a row. In one embodiment, an elevator subgroup has elevators, each having an elevator car with a single car door. The remaining part (one or more elevators) of the elevator group has two car doors. The elevators of the elevator group are arranged in the building such that, on the access control floor, the second car door of the at least one elevator car and the only car doors of the elevator subgroup open to the first non-public zone. The non-public zone is thus located in the space between the elevator subgroup and the remaining part of the elevator group.

[0015] 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: Fig. 1 a schematic representation of an exemplary situation in a building with several floors and an exemplary elevator system; Fig. 2 a side view of a schematically represented building with an exemplary elevator system with four elevators; Fig. 3 a top view of the elevator system according to Fig. 2 in a level of an access control floor; Fig. 4 shows a plan view of the elevator installation according to a further embodiment in a level of the access control floor; Fig. 5 shows an exemplary representation of a first embodiment of a method for operating the elevator installation; Fig. 6 shows an exemplary representation of a second embodiment of a method for operating the elevator installation; and Fig. 7 shows an exemplary representation of a third embodiment of a method for operating the elevator installation.

[0016] Fig. 1 is a schematic representation of an exemplary situation in a building 2 having several floors L0, L, Ln, which are served by an elevator system 1. According to an embodiment of the technology described here, a building-internal access control is carried out on floor L; hereinafter, floor L is also referred to as access control floor L. In the Fig. 1 In the situation shown, building 2 has at least one floor L0 below the access control floor L and several floors Ln above the access control floor L. Persons can enter building 2, for example, on floor L0 to use one or more of the floors Ln for a specific purpose. In the following, floor L0 is also referred to as access floor L0, and a floor Ln is also referred to as use floor Ln. The person skilled in the art will recognize that the terms "access control floor", "access floor", and "use floor" are exemplary and are chosen here to better distinguish between the floors L0, L, Ln. The person skilled in the art will also recognize that the arrangement and / or organization of the floors L0, L, Ln are adapted to building 2 and its use and, accordingly, in a different manner than in Fig. 1 shown can be executed.

[0017] For presentation purposes, Fig. 1 of the elevator installation 1, only an elevator control 13, a drive machine 14, a support means 16 (e.g. steel cables or flat belts), an elevator car 10 suspended from the support means 16 and movable in a shaft 18 under the control of the elevator control 13 (hereinafter also referred to as car 10), and a number of elevator operating devices 4 are shown. The person skilled in the art will recognize that the elevator installation 1 may also comprise several cars 10 in one or more shafts 18, which are controlled by a group control. Instead of a Fig. 1 In addition to the traction elevator shown, the elevator system 1 can also have one or more hydraulic elevators.

[0018] The Fig. 1 The elevator car 10 shown has a first car door 10a on a first car wall 10d and a second car door 10b on a second car wall 10c. In the exemplary embodiment shown, a monitoring device 24 and an information device 25 are arranged in the car 10 and are communicatively connected to the elevator control system 13. The monitoring device 24 is designed to generate a status signal indicating whether a passenger P is present in the elevator car 10. The monitoring device 24 can, for example, comprise a video camera with an associated image processing device; this can be used to detect the presence of a passenger P. Those skilled in the art will recognize that the elevator installation 1 can also be used to transport an autonomously movable object (robot) or another object; the term "passenger" therefore also includes such objects.

[0019] Fig. 1 also shows a number of shaft doors 6a, 6b, 7, 7a, which separate the elevator shaft 18 from the floors L0, L, Ln. In one embodiment, a shaft door 6a, 6b, 7, 7a is opened and closed by being coupled to one of the car doors 10a, 10b when the elevator car 10 is located on the floor L0, L, Ln and can thus be moved by the car door 10a, 10b. In the embodiment of the Fig. 1 On the access control floor L, a first shaft door 6 is located in a first public zone Zp1 of building 2, and a second shaft door 7 is located in a first non-public zone Zs1 of building 2. On the access floor L0, a third shaft door 6a is located in a second public zone Zp2 of the building. On the use floor Ln, a fourth shaft door 7a is located in a second non-public zone Zs2. The person skilled in the art will recognize that further public and non-public zones Zp, Zs may be provided in the building.

[0020] A communications network 22 connects the elevator operating devices 4 to the elevator control 13, thereby enabling communication between the elevator control 13 and the elevator operating devices 4. For this communication, the elevator operating devices 4 and the elevator control 13 can be connected directly or indirectly to the communications network 22. The communications network 22 can comprise a communications bus system, individual data lines, or a combination thereof. Depending on the implementation of the communications network 22, the elevator control 13 and each elevator operating device 4 can be assigned individual addresses and / or identifiers, so that, for example, the elevator control 13 can send a message specifically to a desired elevator operating device 4. Communication can take place according to a protocol for wired communication, for example the Ethernet protocol.In one embodiment, the elevator operating devices 4 are supplied with electrical power via the communications network 22 (PoE). If the elevator operating device 4 is arranged in the car 10, the communications line 20 serves, in one embodiment, for communication and power supply to the elevator operating device 4.

[0021] In the Fig. 1 shown situation and according to an embodiment of the elevator installation 1 and its mode of operation, a control functionality is provided in building 2 using the elevator installation 1. Briefly and by way of example, two operating modes are provided in the elevator installation 1 according to the technology described here. In a first operating mode, the elevator control 13 moves the elevator car 10 between the floors L, L0 and serves the public zones Zp1, Zp2. The elevator control 13 controls the opening of the car door 10a, 10b on one of the floors to be served, L, L0, which causes the shaft door 6, 6a arranged in the public zone Zp1, Zp2 on the floor to be served, L, L0, to open. In a second operating mode, the elevator control 13 moves the elevator car 10 between the floors L, Ln and serves the non-public zones Zs1, Zs2.The elevator control 13 controls the opening of the car door 10a, 10b on one of the floors to be served (L, Ln), which causes the shaft door 7, 7a located in the non-public zone Zp1, Zp2 on the floor to be served (L, Ln) to open. As explained elsewhere in this description, a change of operating mode only occurs when the elevator car 10 is empty.

[0022] If, according to one exemplary embodiment, a passenger P wishes to travel from the public zone Zp2 on the access floor L0 by elevator to the usage floor Ln and into the non-public zone Zs2 there, the elevator car 10 first transports them to the access control floor L. For this purpose, the elevator installation 1 is in the first operating mode and the elevator car 10 only moves to and from floors L0, L with public zones Zp1, Zp2. If the passenger P gets out of the car 10 on the access control floor L and enters the public zone Zp1, the passenger P can be detected there (e.g., seen, recognized, greeted and / or registered). In this exemplary embodiment, the elevator car 10 is then empty and a change from the first operating mode to the second operating mode can take place. In the second operating mode, the elevator car 10 only moves to and from floors L0, Ln with non-public zones Zs1, Zs2.If the passenger P then moves from the public zone Zp1 to the non-public zone Zs1 on the access control floor L in this embodiment, he can board the cabin 10 from there to be transported to the desired usage floor Ln.

[0023] The access control floor L can, for example, include a reception area of ​​a company or a hotel reception, while the company's operating rooms or hotel rooms are located on at least one floor Ln. The company or hotel can stipulate that every passenger P, regardless of whether they are known / registered or unknown, or whether they are regularly or first-time visitors to building 2, must pass the reception area or reception to be registered by the staff there. The reception area or reception, or their staff, on the access control floor L thus contribute to implementing an access control function in building 2.

[0024] The elevator system 1 can be designed depending on the type and size of the building 2 and its transport requirements. Various designs of the elevator system 1 are shown in Fig. 2 , Fig. 3 und Fig. 4 shown. Fig. 2 shows a side view of a schematically illustrated building 2 with an exemplary elevator system 1 with a group of four elevators E1, E2, E3, E4, each having an elevator car 10 with zwei Kabinentüren 10a, 10b. In the illustrated embodiment, elevators E1-E4 serve floors L0, L, L1, L2, Ln. On the access control floor L, it is indicated for each elevator E1-E4 that access is possible from and to the public zone Zp1 and from and to the non-public zone Zs1. On the access floor L0, it is indicated for each elevator E1-E4 that access is possible from and to the public zone Zp2. On the use floors L1-Ln, access is only possible from and to the non-public zone Zs, Zs2.

[0025] In another embodiment, not all elevators E1-E4 in the group each have two car doors 10a, 10b. For example, elevators E1 and E2 may each have two car doors 10a, 10b, while elevators E3 and E4 each have only one car door 10a, 10b. In this case, elevators E3 and E4 only serve floors L, L1, L2, Ln, while elevators E1 and E2, as in the previous embodiment, serve all floors L0, L, L1, L2, Ln. Those skilled in the art will recognize that, in general, not all elevators E1-E4 in the group each have two car doors. Fig. 2 In this embodiment, the hatched areas for the public zones on the access floor L0 for elevators E3 and E4 can be omitted.

[0026] Fig. 3 shows a plan view of the elevator system 1 according to Fig. 2 on a level of the access control floor L. The elevator installation 1 comprises the group of elevators E1 - E4. The elevator E1 comprises at least one elevator car 10 ( Fig. 1 ), the remaining elevators E2 - E4 of the group each have an elevator car 10 with a first and a second car door 10a, 10b. The elevators E1-E4 are arranged next to each other in this plan view (essentially in a row next to each other). From the perspective of a passenger P, the elevators E1-E4 are also arranged in a row next to each other. On the access control floor L, the car door 10a is coupled to the floor door 6 (corresponding to the public zone Zp1), and the car door 10b is coupled to the floor door 7 (corresponding to the non-public zone Zs 1). An arrow 26 indicates possible directions of movement on the access control floor L. Depending on the operating mode, passengers P can exit or enter the elevators E1-E4 towards the public zone Zp1 or the non-public zone Zs 1.

[0027] Fig. 4 shows a plan view of the elevator installation 1 according to a further embodiment in a level of the access control floor L. The elevator installation 1 comprises the group of elevators E1 - E4. The elevator E1 comprises at least one elevator car 10 ( Fig. 1 ). An elevator subgroup comprises the elevators E2 - E4 of the group, each having an elevator car 10 with a single car door 10b. The elevators E1 - E4 are arranged in building 2 such that on the access control floor L the second car door 10b of the at least one elevator car 10 and the only car doors 10b of the elevator subgroup open towards the first non-public zone Zs 1.

[0028] In the illustrated embodiment, elevators E1 and E2 are arranged side by side and each have an elevator car 10 and car doors 10a, 10b. For each elevator E1, E2, on the access control floor L, the car door 10a can be coupled to the floor door 6 (corresponding to the public zone Zp1), and the car door 10b can be coupled to the floor door 7 (corresponding to the non-public zone Zs1). Elevators E3 and E4 are also arranged side by side in this plan view and each have an elevator car 10; however, each of these elevator cars 10 has only one car door 10b, which can be coupled to the floor door 7 (corresponding to the non-public zone Zs1) on the access control floor L. Fig. 4 It can be seen that the lifts E1 and E2 are located opposite the lifts E3 and E4, with the non-public zone Zs1 being located between the lifts E1, E2 and the lifts E3, E4.

[0029] In the example of Fig. 4 From the perspective of a passenger P in the public zone Zp1, only the elevators E1 and E2 are visible. An arrow 28 indicates possible directions of movement on the access control floor L. Depending on the operating mode, passengers P can exit or enter the elevators E1 and E2 towards the public zone Zp1 or the non-public zone Zs1; however, the elevators E3 and E3 can only be exited or entered towards the non-public zone Zs1.

[0030] 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 other elevator controls, e.g. controls with mobile devices or hybrid forms of the aforementioned controls, are also possible. If the elevator installation 1 is equipped with an up / down control, elevator operating devices 4 are arranged on the floors L, L0, Ln, at which a passenger P can enter the desired direction of travel. The boarding floor results from the location of the elevator operating device 4 at which the direction of travel (i.e., an elevator call) is entered. The desired destination floor is then entered in the cabin 10 at an elevator operating device arranged there (in Fig. 1 not shown). A communication line 20 connects the (car-side) elevator operating device to the elevator control 13. If the elevator installation 1 is equipped with a destination call control, the elevator operating devices 4 are arranged on the floors L, L0, Ln, at which a passenger P can enter a desired destination floor; after the passenger P has entered the destination floor (i.e., entering a destination call), information about the boarding floor and the destination floor is available. The boarding floor is determined from the location of the elevator operating device 6 at which the destination floor is entered. A destination call control device 12 assigns an elevator car 10 to the entered destination call, and an elevator control device 8 controls the movement of the assigned elevator car 10 according to the destination call.

[0031] With the understanding of the above-described principal system components of the elevator system 1 and their functionalities, the following will be explained using Fig. 5 , Fig. 6 and Fig. 7 Descriptions of exemplary methods for operating the elevator system 1. The elevator system 1 can be operated as in Fig. 1 shown; several lifts E1-E4 can be arranged as shown in Fig. 2 or Fig. 3 The methods are illustrated by means of exemplary flowcharts and the steps performed therein. 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 substeps, or that several of the steps can be combined into one step.

[0032] Fig. 5 shows an exemplary representation of a first embodiment of a method for operating the elevator installation 1. The method begins in a step S1 and ends in one step S8. In one step S2 The elevator control 13 of the elevator installation 1 is operated according to a first operating mode or a second operating mode. Operation can take place according to one of the two operating modes, which is represented by a decision in step S3. If operation is to take place according to the first operating mode, the method proceeds along the "1" branch to a step S4, in which the first operating mode is specified as the operating mode. If operation is to take place according to the second operating mode, the method proceeds along the "2" branch to step S6, in which the second operating mode is specified as the operating mode.

[0033] Is in step S4If the first operating mode is determined, in a step S5 the elevator control 13 controls the elevator car 10 so that it moves between the floors L, L0 and the public zones Zp1, Zp2 are served. This also means that the elevator control 13 only accepts elevator calls from and to floors L, L0 with public zones Zp1, Zp2 for operation or execution. The elevator control 13 controls the opening of the car door 10a on a floor L, L0 to be served, which causes the shaft door 6, 6a arranged in the public zone Zp1, Zp2 on the floor L, L0 to be served to open. As explained elsewhere in this description, the car door 10a on the floor L, L0 to be served takes the corresponding shaft door 6 with it.

[0034] Is in step S6 the second operating mode is set, controls in one step S7The elevator control 13 controls the elevator car 10 so that it travels between the floors L, Ln and serves the non-public zones Zs1, Zs2. This also means that the elevator control 13 only accepts elevator calls from and to floors L, Ln with non-public zones Zs1, Zs2 for operation or execution. The elevator control 13 controls the opening of the car door 10b on a floor L, Ln to be served, which causes the shaft door 7, 7a located in the non-public zone Zs1, Zs2 on the floor L, Ln to be served to open. In this case, the car door 10b on the floor L, L0 to be served also takes the corresponding shaft door 7, 7a with it.

[0035] In the example of Fig. 5 the procedure ends in step S8 after the step S5 or the step S7.

[0036] Fig. 6 shows an exemplary representation of a second embodiment of a method for operating the elevator installation 1. The method begins in a step A1 and ends in one step A16. The description of this embodiment is based on a situation in which the Fig. 1 shown elevator car 10 is empty, which is detected by the monitoring device 24, and no elevator call is to be served; the step A2 represents this situation.

[0037] In one step A3 an elevator call from passenger P is received. The elevator call can be a destination call or indicate the direction of travel.

[0038] In one step A4The boarding floor is determined. The boarding floor is determined from the floor L, L0, Ln on which the elevator operating device 4, at which the passenger P enters the elevator call, is located. The passenger P can be in a public zone Zp or a non-public zone Zs. In step A4 In addition, the type of zone (Zp, Zs) in which passenger P is located and from which passenger P is to enter elevator car 10 is determined. Determining the zone type therefore also includes which of the elevator doors 10a, 10b is to be opened on the boarding floor. The elevator operating device 4 used by passenger P can also be located in one of the two zones Zp, Zs. In one embodiment, the type of zone can thus be determined for this elevator call.

[0039] In one step A5It is checked whether the zone is a public zone Zp1, Zp2. If this is the case, the procedure proceeds along the YES branch to a step A6. If, on the other hand, it is a non-public zone Zs1, Zs2, the procedure proceeds along the NO branch to a step A11 .

[0040] In step A6 The first operating mode is set for the elevator control 13. Since the elevator car 10 is empty (step A2), can be switched from one operating mode to another according to the technology described here.

[0041] In a step A6 next step A7 The elevator call is served according to the first operating mode. In the first operating mode, the elevator control 13 only accepts elevator calls from and to floors L, L0 with public zones Zp1, Zp2, and only the doors to the public zones Zp1, Zp2 are opened (see also step S5in Fig. 5 ).

[0042] In one step A8 The elevator call of passenger P and any elevator calls of other passengers (which can be served in the first operating mode) have been served. Elevator car 10 should therefore be empty.

[0043] In one step A9 It is checked whether the elevator car 10 is empty. For this purpose, the signal from the monitoring device 24 is evaluated. If the elevator car 10 is empty, the process proceeds along the YES branch to step A16, in which the procedure ends or back to the start in step A1 progresses.

[0044] If the elevator car 10 is not empty, the procedure proceeds along the NO branch to a step A10. In step A10an alarm is generated which, for example, alerts building personnel that there may be unauthorized use of the elevator and / or which triggers the information unit 25 in the elevator car 10 to generate an audiovisual notification which requests a passenger to exit the elevator car 10.

[0045] After the alarm in step A10 was generated, the method can wait a predetermined period of time and then in step A9 to check again whether elevator car 10 is empty. This query can be repeated until elevator car 10 is empty.

[0046] In the above step A5 the procedure proceeds along the NO branch to a step A11 , if it is a non-public zone Zs1, Zs2. In step A11 the second operating mode is set for the elevator control 13. Since the elevator car 10 is empty (step A2),can be switched from one operating mode to another according to the technology described here.

[0047] In one step A12 the elevator call is served according to the second operating mode. In this operating mode, the elevator control 13 only accepts elevator calls from and to floors L, Ln with non-public zones Zs1, Zs2, and only the doors to the non-public zones Zs1, Zs2 are opened (see also step S7 in Fig. 5 ).

[0048] The remaining steps in this branch A13-A15 as in connection with the steps A8-A10 described. In particular, these steps A8-A10 and A13-A15 Ensure that the elevator car 10 is empty before changing from one operating mode to the other (see steps A2, A6 und A11 ).

[0049] Fig. 7 shows an exemplary representation of a third embodiment of a method for operating the elevator installation 1. The method begins in a step B1 and goes through loops, which in this embodiment go back to a step B2 lead.

[0050] In step B2 It is checked whether the elevator car 10 is empty. For this purpose, the signal from the monitoring device 24 is evaluated. If the elevator car 10 is empty, the process proceeds along the YES branch to a step B3, in which it is determined that the operating mode can be the first operating mode or the second operating mode. If, however, the elevator car 10 is not empty, the method proceeds along the NO branch to a step B4,in which the current operating mode of the elevator control 13 is maintained. Because the elevator car 10 is not empty, the operating mode can be changed according to the technology described here (at the time of execution of step B2) cannot be changed.

[0051] The steps B3 and B4 follows a step B5. In step B5 It is checked whether at least one lift call has been received according to the procedure defined in steps B3 both operating modes are possible (either the first or the second operating mode) or B4 (current operating mode is maintained) specified operating mode. If such an elevator call is present, the method proceeds along the YES branch to step B6, otherwise along the NO branch to step B9.

[0052] In step B6, the current elevator call is analyzed to schedule the next required stop of the elevator car 10 by the elevator control system 13. The floor to be served and the car door 10a, 10b are selected, which is to be opened upon stopping on the floor to be served according to the elevator call and the operating mode.

[0053] In one step B7 the operating mode is set according to the settings made in step B6 set to the stop selected for the elevator call. The operating mode can be set to the first operating mode or the second operating mode. There are two cases: If the operating mode is already set (ie, to the first or second operating mode), then the elevator call definitely matches the operating mode, and the operating mode is maintained. On the other hand, ie, if the operating mode (according to step B3) still selectable, it will now be in step B7set to match the elevator call, which affects either only public zones Zp (first operating mode) or non-public zones Zs (second operating mode).

[0054] In one step B8 The elevator car 10 is moved to the floor to be served in order to operate the stop. In this case, the position B6 The selected car door 10a, 10b is opened and closed again, whereby the corresponding floor door 6, 6a, 7, 7a is moved along by the car door 10a, 10b. The elevator call is thus served and the process returns to step B2.

[0055] In step B9 is after in step B5 no further elevator call according to the steps B3 or B4specified operating mode, it is checked whether there is another elevator call that requires a different operating mode. If there is no such elevator call, the process proceeds along the NO branch back to step B2, otherwise along the YES branch to a step B10.

[0056] In step B10 an alarm is generated as described in connection with the step A10 in Fig. 6 In addition, the car door 10a, 10b and the corresponding floor door 6, 6a, 7, 7a are opened until the elevator car 10 is empty. If this is the case, the alarm can be stopped. The procedure then returns to step B2.

[0057] In one embodiment and based on the Fig. 1In the situation shown, passenger P enters the elevator call on the elevator operating device 4 (shown as a destination call device). If the elevator car 10 is ready for boarding, i.e., the shaft door 6b and the car door 10a are open, the passenger P gets into the car 10. In one embodiment, the information unit 25 arranged in the car 10 informs the passenger P that the car 10 is traveling to the access control floor L and that he or she must get off there. If the car 10 is on the access control floor L, the passenger P enters the first public zone Zp1 through the open car door 10a and the open shaft door 6a. The monitoring device 24 checks whether the car 10 is empty after this. In order to begin the journey to the desired floor Ln after detection by the staff, the passenger P goes to the first non-public zone Zs1 on the access control floor L.Passenger P enters the desired floor Ln (destination call) on the elevator operating device 4 located there. If the check by the monitoring device 24 shows that the car 10 is empty, the elevator control system 13 switches to the second operating mode. If the elevator car 10 is ready for boarding, i.e., the shaft door 7 and the car door 10b are open, passenger P enters the car 10 and is transported to the desired floor Ln.

Claims

1. An elevator system (1), comprising: an elevator controller (13); at least one elevator car (10) which is movable under control by the elevator controller (13) between floors (L0, L, L1, Ln) of a building (2) in an elevator shaft (18) and has two car doors (10a, 10b), a first car door (10a) on a first car wall (10d) and a second car door (10b) on a second car wall (10c); and a number of shaft doors (6, 6a, 7, 7a) which separate the elevator shaft (18) from the floors (L0, L, L1, Ln), wherein a first group of shaft doors (6, 6a) is arranged in public zones (Zp1, Zp2) of the building (2) and a second group of shaft doors (7, 7a) is arranged in non-public zones (Zs1, Zs2) of the building (2), characterized in that the elevator controller (13) comprises: - a first operating mode according to which the elevator controller (13) is designed to move the elevator car (10) between the floors (L, L0) and to serve the public zones (Zp1, Zp2), wherein, on a floor (L, L0) to be served, the elevator controller (13) controls an opening of the car door (10a) which on the floor (L, L0) to be served initiates an opening of the shaft door (6) arranged in the public zone (Zp1, Zp2) there, and - a second operating mode according to which the elevator controller (13) is designed to move the elevator car (10) between the floors (L, Ln) in order to serve the non-public zones (Zs1, Zs2), wherein, on a floor (L, Ln) to be served, the elevator controller (13) controls an opening of the car door (10b) which on the floor (L, Ln) to be served initiates an opening of the shaft door (7, 7a) arranged in the non-public zone (Zs1, Zs2) there.

2. The elevator system (1) according to claim 1, further comprising a monitoring device (24) which is communicatively connected to the elevator controller (13) and is designed to generate a status signal which indicates whether a passenger (P) is present in the elevator car (10), wherein the elevator controller (13) is designed only to change between the first operating mode and the second operating mode when the status signal generated by the monitoring device (24) indicates that no passenger (P) is present in the elevator car (10).

3. The elevator system (1) according to claims 1 or 2, further comprising an information unit (25) in the elevator car (10), wherein the information unit (25) is communicatively connected to the elevator controller (13) and is designed to generate under control by the elevator controller (13) a notification, in particular an audiovisual notification, requesting the passenger (P) to leave the elevator car (10).

4. The elevator system (1) according to any one of the preceding claims, wherein a group of elevators (E1 - E4) is present, wherein an elevator (E1) comprises the at least one elevator car (10) and the other elevators (E2 - E4) in the group each have an elevator car (10) with a first and a second car door (10a, 10b), and wherein the elevators (E1 - E4) are arranged next to one another in a row in the building (2).

5. The elevator system (1) according to any one of claims 1 - 3, wherein a group of elevators (E1 - E4) is present, wherein an elevator (E1) comprises the at least one elevator car (10) and the other elevators (E2 - E4) in the group each have an elevator car (10), wherein the elevators (E1 - E4) are arranged next to one another in the building (2), and the at least one elevator car (10) or a further elevator car (10) has a first and second car door (10a, 10b), so that at least one elevator (E1 - E4) in the group has an elevator car with only one car door.

6. The elevator system (1) according to any one of claims 1 - 3, wherein a group of elevators (E1 - E4) is present, wherein an elevator (E1) comprises the at least one elevator car (10), wherein an elevator sub-group comprises elevators (E2 - E4) of the group, each of which has an elevator car (10) with a single car door (10b), wherein the elevators (E1 - E4) are arranged in the building (2) such that on the access control floor (L) the second car door (10b) of the at least one elevator car (10) and the single car doors (10b) of the elevator sub-group open onto the first non-public zone (Zs1).

7. A method for operating an elevator system (1) according to any one of claims 1 - 6, wherein the elevator system (1) comprises an elevator controller (13), at least one elevator car (10), which is movable in an elevator shaft (18) between floors (L0, L, L1, Ln) of a building (2) under control by the elevator controller (13) and has a first car door (10a) on a first car wall (10d) and a second car door (10b) on a second car wall (10c), and a number of shaft doors (6a, 6b, 7), which separate the elevator shaft (18) from the floors (L0, L, L1, Ln), wherein a first group of shaft doors (6, 6a) is arranged in the public zones (Zp1, Zp2) of the building (2) and a second group of shaft doors (7, 7a) is arranged in non-public zones (Zs1, Zs2) of the building (2), characterized in that the method comprises: operating the elevator controller device (13) according to a first operating mode or a second operating mode, wherein, in the first operating mode, the elevator car (10) is moved under control by the elevator controller (13) between the floors (L, L0) in order to serve the public zones (Zp1, Zp2); wherein the elevator controller (13) controls an opening of the car door (10a) on a floor (L, L0) to be served, said car door on the floor (L, L0) to be served initiating an opening of the shaft door (6) arranged in the public zone (Zp1, Zp2) there, and wherein, in the second operating mode, the elevator car (10) is moved under control by the elevator controller (13) between the floors (L, Ln) in order to serve the non-public zones (Zs1, Zs2); wherein the elevator controller (13) controls an opening of the car door (10b) on a floor (L, Ln) to be served, said car door on the floor (L, Ln) to be served initiating an opening of the shaft door (7, 7a) arranged in the non-public zone (Zs1, Zs2) there.

8. The method according to claim 7, further comprising evaluating a status signal generated by a monitoring device (24) that is communicatively connected to the elevator controller (13) and indicating whether a passenger (P) is present in the elevator car (10), wherein the elevator controller (13) is designed only to change between the first operating mode and the second operating mode when the status signal generated by the monitoring device (24) indicates that no passenger (P) is present in the elevator car (10).

9. The method according to claims 7 or 8, further comprising generation of a notification, in particular an audiovisual notification, by an information unit (25) in the elevator car (10), wherein the information unit (25) is communicatively connected to the elevator controller (13) and wherein the notification requests the passenger (P) to leave the elevator car (10).