Elevator system

Abstract

To provide an elevator system capable of calling an elevator of a designated inspection object from a plurality of elevators by a simple constitution using an existing function.SOLUTION: When it is detected that the operation mode is the automatic operation mode and the return signal of the return switch is received, the control device of each of the plurality of elevators is configured to execute a return operation of causing the car to travel to a designated return floor and stand by with the door open in a non-directional manner. The elevator system is configured to perform a homing operation of the target elevator when it is detected that the operation mode is the automatic operation mode, it is detected that the maintenance mode is set, and a simulation signal of a homing signal of the target elevator is received from the terminal of the maintenance person.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to an elevator system that performs group management of multiple elevators. [Background technology]

[0002] When inspecting elevators, maintenance personnel must enter the car of the elevator that is to be inspected. To do this, maintenance personnel use a hall button installed at the elevator hall to call the elevator and then enter the car. However, at sites where multiple elevators are installed in the same bank, an elevator that is not the one being inspected may respond to the hall call, creating the problem of it taking time to enter the car of the elevator that is to be inspected.

[0003] Regarding the above problem, Patent Document 1 discloses a technology for quickly bringing a car to be inspected to the floor where the inspection is to be performed. This technology stops the target car at the stopping floor based on target car information and stopping floor information transmitted from a mobile terminal. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-44668 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the technology of Patent Document 1 requires building a new system from scratch to ensure that the car to be inspected arrives at the floor where the inspection is to be performed, and there remains the issue of increasing the sophistication and complexity of the system.

[0006] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an elevator system that can call a specified elevator to be inspected from multiple elevators using a simple configuration that utilizes existing functions. [Means for solving the problem]

[0007] The present disclosure relates to an elevator system that manages a group of elevators, wherein each of the elevators includes a control panel having a control device that controls the running of the car, a maintenance switch that is provided on the control panel and switches between setting and canceling a maintenance mode, a return switch that is provided on equipment different from the control panel, and a selector switch that selects an operation mode between a manual operation mode and an automatic operation mode, and the control device includes a first detection unit that detects the setting state of the maintenance mode, a second detection unit that detects the operation mode selected by the selector switch, and a return switch that receives a return signal from the return switch. The system is equipped with a destination signal receiving unit, a return operation control unit that, when it is detected that the operation mode is automatic operation mode and a return signal from the return switch is received, executes a return operation in which the car runs to the specified destination floor and waits in an omnidirectional manner with the door open, a simulated signal receiving unit that receives a simulated signal of the return signal from the maintenance staff's terminal device, and a simulated return operation control unit that executes the return operation when the execution conditions for the simulated return operation based on the simulated signal are met, and the execution conditions include detection that the operation mode is automatic operation mode, detection that the maintenance mode is set, and reception of a simulated signal. [Effects of the Invention]

[0008] According to the elevator system technology disclosed herein, a return operation is performed when a simulated signal that simulates a return signal is received from a maintenance personnel terminal device, utilizing an existing return operation based on a return signal from a return switch. This allows the return operation to be intentionally performed in response to an instruction from the maintenance personnel terminal device, making it possible to call a car to a specified floor with a simple configuration that utilizes the existing return operation function. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a configuration diagram of an elevator system according to an embodiment. [Figure 2] FIG. 2 is a block diagram showing the functions of a control device of the elevator system according to the embodiment. [Figure 3] 4 is a flowchart showing a routine of a return operation process executed in the control device of the elevator system according to the embodiment. [Figure 4] 4 is a flowchart showing a routine of simulated return operation processing executed in the control device of the elevator system according to the embodiment. [Figure 5] FIG. 10 is a diagram for explaining the procedure for car call work performed by a maintenance worker. [Figure 6] FIG. 2 illustrates an example of hardware resources of a control device. [Figure 7] FIG. 10 is a diagram illustrating another example of hardware resources of a control device. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment will be described with reference to the drawings. Note that elements common to the various drawings are given the same reference numerals and redundant explanations will be omitted.

[0011] Embodiment 1. Configuration of elevator system according to embodiment FIG. 1 is a configuration diagram of an elevator system according to an embodiment.

[0012] The elevator system is applied to a facility. The facility may be, for example, an indoor facility, an outdoor facility, or a facility that combines these. The facility may consist of, for example, one or more buildings. The facility may also be, for example, a part of a building. A control room 3 is provided in the facility. The control room 3 is a place where a facility manager or the like manages the facility.

[0013] The elevator system includes multiple elevators and a group control device 7. In the facility, a hoistway 4 for the multiple elevators is provided. The hoistway 4 is a space that spans multiple floors with its longitudinal direction in the vertical direction. Machine rooms 5 for the multiple elevators are provided above the hoistway 4. In the facility, a landing (not shown) is provided on each floor. The landing is a place that leads to the hoistway 4.

[0014] Each elevator includes a hoist 8, a deflector sheave 9, a main rope 10, a car 11, a counterweight 12, and a control device 20. The group control device 7, and the hoist 8, deflector sheave 9, and control device 20 of each elevator are provided in the machine room 5. The car 11 and counterweight 12 are provided in the hoistway 4. The hoist 8 includes a motor that generates driving force and a sheave that rotates by the driving force generated by the motor. The main rope 10 is wound around the sheave and deflector sheave 9 of the hoist 8. The main rope 10 supports the load of the car 11 on one side of the sheave of the hoist 8. The main rope 10 supports the load of the counterweight 12 on the other side of the sheave of the hoist 8. The car 11 and counterweight 12 travel in opposite directions in the vertical direction of the elevator shaft via the sheave of the elevator shaft 8 and the main rope 10, driven by the driving force generated by the motor of the elevator shaft 8. The car 11 travels in the elevator shaft 4, transporting passengers and others inside the car 11 between multiple floors of the facility.

[0015] Each elevator control device 20 is disposed on the control panel 30 of each elevator and corresponds to the car 11 of the same elevator. The control device 20 is electrically connected to the hoisting machine 8 of the same elevator. The control device 20 is connected to the corresponding car 11 via a car transmission cable 13. The control device 20 controls the running of the car 11 by controlling the hoisting machine 8. Each elevator control device 20 is electrically connected to a group control device 7 via a transmission cable 14. The group control device 7 receives information on hall calls from users received by hall control panels (not shown) installed at the halls of multiple elevators. The group control device 7 assigns the hall calls to one of the cars 11.

[0016] The car 11 is equipped with a car operating panel 15. The car operating panel 15 is an elevator operating panel that accepts car call operations by elevator users. Car call information accepted by the car operating panel 15 of the car 11 is transmitted to the control device 20 corresponding to the car 11 via the car transmission cable 13.

[0017] A maintenance switch 22 is provided on the control panel 30 of each elevator. The maintenance switch 22 is a switch that allows a maintenance person to set the elevator's operation mode from normal mode to maintenance mode and to cancel maintenance mode and return it to normal mode. The signal from the maintenance switch 22 is sent to the control device 20 of each unit. During normal elevator operation, the maintenance switch 22 is set to normal mode. When a maintenance person performs an elevator inspection, he or she first operates the maintenance switch 22 to set the operation mode to maintenance mode. When the operation mode is maintenance mode, the control device 20 does not issue an alarm indicating an abnormality even if it detects elevator operation that would normally be determined to be abnormal.

[0018] The car 11 is equipped with a changeover switch 24. The changeover switch 24 switches the operation mode of the elevator between an automatic operation mode and a manual operation mode. The automatic operation mode is an operation mode in which the car 11 automatically responds to registered calls. The manual mode is an operation mode in which a maintenance worker or the like manually moves the car 11 by operating dedicated equipment. Note that the changeover switch 24 is located inside a locked door in the car 11, for example, to restrict operation by general users. The signal of the changeover switch 24 is transmitted to the control device 20 corresponding to the car 11 via the car transmission cable 13.

[0019] The elevator system includes a return switch 26 for each elevator. The return switch 26 is a switch that, when turned ON, initiates a return operation. The return operation here refers to the elevator car 11 traveling to a pre-designated destination floor and continuing to wait in a non-directional manner with the doors open. The destination floor is designated, for example, as the top floor. Each return switch 26 is installed in a device separate from the control panel 30, such as a management device in the control room 3 where the facility manager resides. In the event of a power outage or disaster, for example, the facility manager turns on the return switch 26 to transmit a return signal. The return signal from the return switch 26 is sent via cable 16 to the control device 20 of each unit. Upon receiving the transmitted return signal, the control device 20 executes the return operation, provided that the elevator's operation mode is set to automatic operation mode. During the return operation, car calls can be registered until the elevator reaches the destination floor. If a car call is registered, the elevator returns to the destination floor while responding to the registered car call.

[0020] The terminal device 40 is a maintenance computer used by elevator maintenance personnel during inspection work. The terminal device 40 transmits and receives information between the terminal device 40 and the control device 20 by connecting to, for example, the control panel 30 of the elevator to be inspected. The information transmitted from the terminal device 40 to the control device 20 is, for example, a simulated signal, which will be described later. The terminal device 40 may also be connected to the control panel 30 of the elevator to be inspected via, for example, a public line.

[0021] 2. Functions of the elevator system according to the embodiment 2 is a block diagram showing the functions of a control device of an elevator system according to an embodiment. The control device 20 includes a first detection unit 202, a second detection unit 204, a return signal receiving unit 206, a simulation signal receiving unit 208, a return operation control unit 210, and a simulated return operation control unit 212.

[0022] The first detection unit 202 is a functional block for detecting the setting state of the maintenance mode based on a signal from the maintenance switch 22. The processing executed by the first detection unit 202 is hereinafter referred to as a "first detection processing." The processing result of the first detection processing is sent to the simulated return operation control unit 212.

[0023] The second detection unit 204 is a functional block for detecting, based on a signal from the selector switch 24, whether the driving mode selected by the selector switch 24 is the automatic driving mode or the manual driving mode. The processing executed by the second detection unit 204 is hereinafter referred to as "second detection processing." The processing result of the second detection processing is sent to the return operation control unit 210 and the simulated return operation control unit 212.

[0024] The return signal receiving unit 206 is a functional block for receiving a return signal from the return switch 26. The processing executed in the return signal receiving unit 206 is hereinafter referred to as "return signal reception processing." The return signal received in the return signal reception processing is sent to the return operation control unit 210.

[0025] The simulated signal receiving unit 208 is a functional block for receiving a simulated signal that simulates a return signal from the terminal device 40. The processing executed in the simulated signal receiving unit 208 is hereinafter referred to as "simulated signal reception processing." The terminal device 40 is equipped with a simulated signal generating unit 402 that generates and transmits a simulated signal in accordance with a request from a maintenance technician. In the simulated signal reception processing, the simulated signal receiving unit 208 receives the simulated signal generated in the simulated signal generating unit 402 and sends the received simulated signal to the simulated return operation control unit 212.

[0026] The return operation control unit 210 is a functional block for executing the return operation of the elevator. This process will be referred to hereinafter as "return operation process." In the return operation process, the return operation control unit 210 executes the return operation when the execution condition for the return operation is met. FIG. 3 is a flowchart showing a routine for the return operation process executed in the control device of the elevator system according to the embodiment. The routine shown in FIG. 3 is executed independently in the return operation control unit 210 of the control device 20 of each elevator.

[0027] In steps S100 and S102 of the flowchart shown in Fig. 3, it is determined whether or not the execution condition for the return operation is satisfied. Specifically, in step S100, it is determined whether or not it has been detected that the operation mode of the elevator is the automatic operation mode, based on the processing result of the second detection processing. As a result, if the determination is not satisfied, the processing of this routine is terminated, and if the determination is satisfied, the processing proceeds to step S102.

[0028] In step S102, it is determined whether or not a return signal has been received based on the processing result of the return signal reception processing. If the determination is negative, the processing of this routine is terminated, and if the determination is positive, it is determined that the execution condition for the return operation is met, and the processing proceeds to step S104.

[0029] In step S104, a return operation is executed, whereby the elevator car 11 travels to a previously designated return floor and continues waiting with the door open in a non-directional manner.

[0030] The simulated return operation control unit 212 is a functional block for executing a return operation based on a simulated signal received from the terminal device 40. An intentional return operation based on a simulated signal is hereinafter referred to as a "simulated return operation," and a series of processes for executing the simulated return operation is hereinafter referred to as a "simulated return operation process." In the simulated return operation process, the simulated return operation control unit 212 executes the simulated return operation when the execution conditions for the simulated return operation are met. Figure 4 is a flowchart showing a routine of the simulated return operation process executed in the control device of the elevator system according to the embodiment. The routine shown in Figure 4 is executed independently in the simulated return operation control unit 212 of the control device 20 of each elevator.

[0031] In steps S110, S112, and S114 of the flowchart shown in Fig. 4, it is determined whether or not the conditions for executing the simulated return operation are met. Specifically, in step S110, it is determined based on the processing result of the second detection processing whether or not it has been detected that the operation mode of the elevator is the automatic operation mode. As a result, if the determination is not met, the processing of this routine is terminated, and if the determination is met, the processing proceeds to step S112.

[0032] In step S112, it is determined whether the maintenance mode has been set based on the processing result of the first detection processing. If the determination is negative, the processing of this routine is terminated, and if the determination is positive, the processing proceeds to step S114.

[0033] In step S114, it is determined whether or not a simulation signal has been received based on the results of the simulation signal reception process. If the determination is negative, the process of this routine is terminated. If the determination is positive, it is determined that the execution conditions for the simulation return operation are met, and the process proceeds to step S116.

[0034] In step S116, a simulated return operation is executed. As a result, the elevator car 11 travels to a pre-specified return floor and continues waiting with the door open in a non-directional manner. After the process of step S116 is executed, the process proceeds to step S118.

[0035] In steps S118 and S120, it is determined whether or not the condition for canceling the simulated return operation is met. Specifically, in step S118, it is determined based on the processing result of the second detection process whether or not it has been detected that the elevator's operation mode is the manual operation mode. As a result, if the determination is not met, the process proceeds to step S120, and if the determination is met, the process proceeds to step S122.

[0036] In step S120, it is determined whether the maintenance mode has been released based on the processing result of the first detection processing. If the determination is negative, the processing returns to step S118, and if the determination is positive, the processing proceeds to step S122.

[0037] In step S122, the simulated return operation is cancelled, whereby the door-open standby of the car 11 is cancelled, and the processing of this routine is terminated.

[0038] 3. Operation of the elevator system according to the embodiment During elevator inspection work, a maintenance worker needs to get into the car 11 of the elevator being inspected. The elevator system of this embodiment is characterized by the operation of having the maintenance worker send a simulated signal from the terminal device 40 to the control device 20 of the elevator being inspected, thereby executing a simulated return operation at any timing and calling the car 11 of the elevator being inspected to the destination floor. Below, we will explain the procedure for car calling work, which uses the simulated return operation to call the car 11 of the elevator being inspected to the destination floor.

[0039] 5 is a diagram for explaining the procedure for car call work performed by a maintenance worker. In step S130, the maintenance worker operates the maintenance switch 22 of the car to be worked on in the machine room 5 to set the operation mode to the maintenance mode.

[0040] In the next step S132, the maintenance worker connects the terminal device 40 to the control panel 30 of the target machine in the machine room 5. Then, the maintenance worker operates the terminal device 40 to generate a simulated signal in the simulated signal generator 402 and transmits it to the control device 20 of the target machine. Here, the control device 20 of the target machine executes simulated return operation processing in the return operation control unit 210. As a result of the work of the maintenance worker in steps S130 and S132, the conditions for executing the simulated return operation are met, and the simulated return operation is executed in the return operation control unit 210. As a result, the car 11 of the target machine travels to the return floor and waits in no direction with the door open.

[0041] In the next step S134, the maintenance worker moves to the designated landing at the destination floor. At the destination floor, the car 11 of the target car is waiting with the non-directional door open due to a simulated return operation. Therefore, the maintenance worker can board the car 11 waiting with the non-directional door open at the destination floor.

[0042] In the next step S136, the maintenance worker operates the selector switch 24 in the car 11 to switch the operation mode from the automatic operation mode to the manual operation mode. As a result, the condition for canceling the simulated return operation is met in the simulated return operation processing, and the simulated return operation is canceled. This allows inspection work to be carried out on the elevator of the target elevator.

[0043] According to the elevator system described above, the following actions and effects can be obtained.

[0044] By sending a simulated return signal from the terminal device 40, the maintenance worker can utilize the existing return operation function to call the car 11 of the car that is the subject of the inspection work to the return floor. Furthermore, in the simulated return operation processing, the setting of maintenance mode is set as a condition for executing the simulated return operation, so it is possible to prevent unintended alarms from being issued due to the simulated return operation. Furthermore, in the simulated return operation processing, the release of maintenance mode is set as a condition for releasing the simulated return operation, so it is possible to prevent the simulated return operation from being continued if the inspection work is interrupted.

[0045] 4. Modifications of the embodiment The elevator system according to the embodiment may be modified as follows.

[0046] 4-1. Hardware resources of the control device 20 6 is a diagram showing an example of hardware resources of a control device. The control device 20 includes, as hardware resources, a processing circuit 54 including a processor 50 and a memory 52. ​​The processing circuit 54 may include multiple processors 50. The processing circuit 54 may also include multiple memories 52.

[0047] In this embodiment, the functions of the control device 20 can be realized by software written as a program, firmware, or a combination of software and firmware. The program is stored in the memory 52. ​​The control device 20 realizes each function by executing the program stored in the memory 52 by the processor 50 (computer).

[0048] The processor 50 is also called a CPU (Central Processing Unit), central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, or DSP. The memory 52 may be a semiconductor memory, a magnetic disk, a flexible disk, an optical disk, a compact disk, a minidisk, or a DVD. Usable semiconductor memory includes RAM, ROM, flash memory, EPROM, EEPROM, etc.

[0049] Fig. 7 is a diagram showing another example of hardware resources of a control device. In the example shown in Fig. 7, the control device 20 includes a processing circuit 58 including, for example, a processor 50, a memory 52, and dedicated hardware 56. Fig. 7 shows an example in which some of the functions of the control device 20 are realized by the dedicated hardware 56. All of the functions of the control device 20 may also be realized by the dedicated hardware 56. The dedicated hardware 56 may be a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.

[0050] 4-2. Specifying the start time for simulated return operation processing It is preferable that the time during which the car 11 waits with the doors open in a non-directional direction due to the simulated return operation be as short as possible. However, depending on the facility's conditions, it may take time for the maintenance staff to travel to the destination floor after transmitting the simulated signal in the machine room 5. Therefore, the elevator system may further include a configuration for specifying the start time of the simulated return operation. In this configuration, for example, when the simulated signal generating unit 402 of the terminal device 40 transmits the simulated signal, it also transmits time specification information for the start time of the simulated return operation specified by the maintenance staff. The time specification information may be a time specification or a timer value from the current time. The simulated return operation control unit 212 further determines whether the start time condition for the simulated return operation is met as an execution condition for the simulated return operation process, and starts the simulated return operation if the determination is met. According to this processing, the simulated return operation is started based on the time specification information specified by the maintenance staff, thereby shortening the door-open wait time for the car 11 of the target elevator at the destination floor.

[0051] 4-3. Specifying the destination floor in the simulated destination operation process The simulated return operation process may be configured so that a maintenance worker specifies the destination floor for the simulated return operation. In this case, when the simulated signal generating unit 402 of the terminal device 40 transmits a simulated signal, it also transmits destination floor designation information that specifies the destination floor for the simulated return operation. The simulated return operation control unit 212 of the control device 20 performs the simulated return operation by specifying the destination floor based on the received destination floor designation information. According to this process, it is possible to call the car 11 of the target car by specifying, for example, a floor close to the machine room 5 as the destination floor.

[0052] 5.Other Although the preferred embodiments have been described in detail above, the present disclosure is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the claims.

[0053] Various aspects of the present disclosure are summarized below as appendices.

[0054] (Appendix 1) In an elevator system that manages multiple elevators in groups, Each of the plurality of elevators comprises: a control panel including a control device for controlling the running of the car; a maintenance switch provided on the control panel for switching between setting and canceling a maintenance mode; A return switch installed in a device different from the control panel; A changeover switch for selecting an operation mode between a manual operation mode and an automatic operation mode, The control device a first detection unit that detects the setting state of the maintenance mode; a second detection unit that detects the operation mode selected by the selector switch; a return signal receiving unit that receives a return signal from the return switch; a return operation control unit that, when it is detected that the operation mode is the automatic operation mode and the return signal of the return switch is received, executes a return operation in which the car travels to a designated return floor and waits in an unrestricted direction with its door open; a simulated signal receiving unit that receives a simulated signal of the return signal from a terminal device of a maintenance worker; a simulated return operation control unit that executes the return operation when an execution condition for the simulated return operation based on the simulation signal is established, The execution condition is: It is detected that the driving mode is the automatic driving mode; and It is detected that the maintenance mode is set; and receiving the simulated signal; elevator system including (Appendix 2) The simulated return operation control unit When it is detected that the driving mode has been switched from the automatic driving mode to the manual driving mode during the execution of the returning operation, the returning operation is canceled. 2. The elevator system of claim 1, configured as follows: (Appendix 3) The simulated return operation control unit When it is detected that the maintenance mode has been released during the execution of the return operation, the return operation is released. 2. The elevator system of claim 1, configured as follows: (Appendix 4) the simulation signal receiving unit is configured to further receive, from the terminal device, time designation information that designates a start time for executing the return operation; The execution condition is: The start time conditions specified by the time specification information are met. 4. The elevator system of claim 1, further comprising: (Appendix 5) The simulation signal receiving unit is configured to further receive, from the terminal device, return floor designation information that designates the return floor, The simulated return operation control unit specifies the return floor based on the return floor specification information when executing the return operation. 5. The elevator system according to claim 1, wherein the elevator system is configured as follows: [Explanation of symbols]

[0055] 3 control room, 4 elevator shaft, 5 machine room, 7 group control device, 8 hoist, 9 deflector, 10 main rope, 12 counterweight, 13 car transmission cable, 14 transmission cable, 15 car operation panel, 16 cable, 20 control device, 22 maintenance switch, 24 changeover switch, 26 return switch, 30 control panel, 40 terminal device, 50 processor, 52 memory, 54 processing circuit, 56 dedicated hardware, 58 processing circuit, 202 first detection unit, 204 second detection unit, 206 return signal receiving unit, 208 simulated signal receiving unit, 210 return operation control unit, 212 simulated return operation control unit, 402 simulated signal generating unit

Claims

1. In an elevator system that manages multiple elevators in groups, Each of the plurality of elevators comprises: a control panel including a control device for controlling the running of the car; a maintenance switch provided on the control panel for switching between setting and canceling a maintenance mode; A return switch installed in a device different from the control panel; A changeover switch for selecting an operation mode between a manual operation mode and an automatic operation mode, The control device a first detection unit that detects the setting state of the maintenance mode; a second detection unit that detects the operation mode selected by the selector switch; a return signal receiving unit that receives a return signal from the return switch; a return operation control unit that, when it is detected that the operation mode is the automatic operation mode and the return signal of the return switch is received, executes a return operation in which the car travels to a designated return floor and waits in an unrestricted direction with its door open; a simulated signal receiving unit that receives a simulated signal of the return signal from a terminal device of a maintenance worker; a simulated return operation control unit that executes the return operation when an execution condition for the simulated return operation based on the simulation signal is established, The execution condition is: It is detected that the driving mode is the automatic driving mode; and It is detected that the maintenance mode is set; and receiving the simulated signal; elevator system, including

2. The simulated return operation control unit When it is detected that the driving mode has been switched from the automatic driving mode to the manual driving mode during the execution of the returning operation, the returning operation is canceled.

2. The elevator system of claim 1, wherein the elevator system is configured as follows:

3. The simulated return operation control unit When it is detected that the maintenance mode has been released during the execution of the return operation, the return operation is released.

2. The elevator system of claim 1, wherein the elevator system is configured as follows:

4. the simulation signal receiving unit is configured to further receive, from the terminal device, time designation information that designates a start time for executing the return operation; The execution condition is: The start time conditions specified by the time specification information are met.

4. The elevator system according to claim 1, further comprising:

5. The simulation signal receiving unit is configured to further receive, from the terminal device, return floor designation information that designates the return floor, The simulated return operation control unit specifies the return floor based on the return floor specification information when executing the return operation.

4. The elevator system according to claim 1, wherein the elevator system is configured as follows:

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