Control device

Abstract

To provide a control device that can automatically diagnose an elevator after an earthquake and quickly resume car operation.SOLUTION: A control device is an elevator control device that automatically performs diagnostic operation on a car to return to normal operation after the car has stopped due to an earthquake, and includes: a situation detection unit that detects the situation of the car when S-waves caused by the earthquake are detected by an earthquake detector; a diagnosis unit that executes first control to perform diagnostic operation in short-time mode, which requires less time than long-time mode, after performing long-time mode diagnostic operation; and an operation control unit that controls normal operation of the car and starts normal operation of the car after S-waves caused by the earthquake are detected and short-time mode diagnostic operation has ended. The diagnosis unit executes second control to perform diagnostic operation in short-time mode without performing long-time mode diagnostic operation, rather than the first control, depending on the situation detected by the situation detection unit.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a control device for an elevator. [Background technology]

[0002] Patent Document 1 discloses an elevator system. According to this elevator system, after the occurrence of shaking, if a condition is met, a diagnostic operation is automatically performed. After the diagnostic operation, the elevator system can start operation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-043696 Summary of the Invention [Problem to be solved by the invention]

[0004] After an earthquake, if the risk of equipment damage is high, it is necessary to take time to diagnose the elevator system. On the other hand, if the risk of equipment damage is low, there are cases where it is not necessary to take time for diagnosis. However, in the elevator system described in Patent Document 1, the same diagnostic operation is performed uniformly. As a result, it takes time for the elevator to resume operation in any case.

[0005] The present disclosure has been made to solve the above-mentioned problems. An object of the present disclosure is to provide a control device that can automatically diagnose an elevator after an earthquake and quickly resume car operation. [Means for solving the problem]

[0006] The control device disclosed herein is an elevator control device that automatically performs diagnostic operation on the car to return to normal operation after the car has stopped due to an earthquake, and includes: a situation detection unit that detects the status of the car when S-waves caused by an earthquake are detected by an earthquake detector; a diagnostic unit that executes first control to perform diagnostic operation in short-time mode, which requires less time than long-time mode, after performing long-time mode diagnostic operation; and an operation control unit that controls normal operation of the car and starts normal operation of the car after S-waves caused by the earthquake are detected and short-time mode diagnostic operation has ended, and the diagnostic unit executes second control to perform diagnostic operation in short-time mode without performing long-time mode diagnostic operation instead of the first control, depending on the situation detected by the situation detection unit. [Effects of the Invention]

[0007] According to the present disclosure, depending on the situation when an earthquake occurs, normal car operation can be resumed after only short-time diagnostic operation is performed, thereby enabling automatic elevator diagnosis after an earthquake and allowing car operation to resume more quickly. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a configuration diagram of a building to which the elevator system according to the first embodiment is applied. [Figure 2] 1 is a functional block diagram of an elevator system according to a first embodiment. [Figure 3] 4 is a flowchart showing the operation of the control device in the first embodiment. [Figure 4] 4 is a flowchart showing the operation of the control device in the first embodiment. [Figure 5] 4 is a flowchart showing the operation of the control device in the first embodiment. [Figure 6] 4 is a flowchart showing the operation of the control device in the first embodiment. [Figure 7] FIG. 2 is a hardware configuration diagram of a control device according to the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] The embodiments of the present disclosure will be described with reference to the accompanying drawings. In each drawing, the same or corresponding parts are designated by the same reference numerals. Duplicate descriptions of these parts will be appropriately simplified or omitted.

[0010] Embodiment 1 Fig. 1 is a configuration diagram of a building to which the elevator system according to the first embodiment is applied. Fig. 2 is a functional block diagram of the elevator system according to the first embodiment.

[0011] In the elevator system 1 of FIG. 1, a hoistway 50 passes through each floor of a building 51. A machine room 52 is provided directly above the hoistway 50. A plurality of landings 53 are provided on each floor of the building 51. The elevator system 1 may include a plurality of elevator devices (not shown). However, the following description will be made of one elevator device.

[0012] For example, the hoisting machine 2 is provided in a machine room 52. The main rope 3 is wound around the hoisting machine 2. The car 4 is provided inside the hoistway 50. The car 4 is suspended on one side of the main rope 3.

[0013] The car 4 is provided with a car door 5. The car door 5 can be opened and closed at the landing 53 together with a landing door (not shown). The earthquake detector 6 is provided in a pit at the bottom of the elevator shaft 50. The earthquake detector 6 can detect P waves and S waves of an earthquake. P waves are waves that indicate the initial tremors of an earthquake and have relatively small vibrations. S waves are waves that indicate the main vibrations of an earthquake and have large vibrations. For example, the earthquake detector 6 detects P waves when it detects acceleration that exceeds a specified P wave threshold. The earthquake detector 6 detects S waves when it detects acceleration that exceeds a specified S wave threshold. The P wave threshold and S wave threshold may be set arbitrarily.

[0014] The control device 10 controls the overall operation of the elevator system 1. The control device 10 can detect the position of the car 4, etc., based on the rotational position of the hoisting machine 2, the detection results of various sensors (not shown), etc. As shown in Fig. 2, the control device 10 has, as its functions, an operation control unit 11, a standby unit 12, an earthquake response unit 13, a situation detection unit 14, and a diagnosis unit 15.

[0015] The operation control unit 11 controls the normal operation of the car 4. For example, when the car 4 is operating normally, the hoisting machine 2 is rotationally driven based on a command from the operation control unit 11. The main rope 3 moves in response to the rotational drive of the hoisting machine 2. The car 4 moves up and down inside the hoistway 50 in response to the movement of the main rope 3.

[0016] The standby unit 12 controls the standby operation of the car 4. When a standby condition is met, such as when a specified time has passed without any passenger calls, the standby unit 12 makes the car 4 wait at a standby floor during standby operation. At this time, a low-risk floor where the operation of the car 4 is unlikely to be disrupted by an earthquake is selected as the standby floor. For example, a non-resonant floor is selected as the low-risk floor.

[0017] When an earthquake occurs, long objects such as the main rope 3 inside the elevator shaft 50 may swing and collide with or get caught on other equipment, causing disruption to the operation of the car 4. By having the car 4 located on a non-resonance floor, the effect of these long objects swinging is reduced even if an earthquake occurs. In other words, by having the car 4 parked on a non-resonance floor, the possibility of disruption to the operation of the car 4 during an earthquake is reduced.

[0018] Hereinafter, floors that are not low-risk floors will be referred to as non-low-risk floors. For example, a non-low-risk floor is a resonant floor. A resonant floor is a floor that is not a non-resonant floor. If an earthquake occurs when car 4 is stopped at a resonant floor, the possibility of long objects inside the elevator shaft 50 swinging and colliding with or getting caught on other equipment, causing disruption to the operation of car 4, is higher than if an earthquake occurs when car 4 is stopped at a non-resonant floor.

[0019] The earthquake response unit 13 controls the response to an earthquake when it occurs. For example, when an earthquake occurs and the earthquake detector 6 detects P waves of the earthquake, the earthquake response unit 13 performs controlled operation to stop the car 4 in standby at the nearest floor. After the car 4 has stopped, the earthquake response unit 13 opens the car door 5 and controls the car door 5 to remain stationary in the open position. Furthermore, in the elevator system 1, if the earthquake detector 6 detects S waves while the car 4 is traveling, the earthquake response unit 13 may bring the car 4 to an emergency stop on the spot.

[0020] If the diagnostic conditions are met after the S-wave vibrations have subsided, the elevator system 1 automatically performs diagnostic operation without requiring on-site diagnosis by a maintenance worker for the elevator system 1. After the diagnostic operation, the elevator system 1 returns to normal operation of the car 4. At this time, the control device 10 selects the diagnostic operation mode to perform depending on the state of the elevator system 1 when the S-waves were detected.

[0021] The situation detection unit 14 detects the situation of the elevator system 1 when the S-waves are detected by the earthquake detector 6. For example, the situation detection unit 14 considers the time when the S-wave detection signal is received from the earthquake detector 6 as the time when the S-waves are detected. For example, the situation detection unit 14 detects the situation of the car 4 and the situation of the car door 5. Specifically, when the S-waves are detected, the situation detection unit 14 detects whether the car 4 is stopped or whether the car 4 is moving. When the S-waves are detected, the situation detection unit 14 detects whether the car 4 is stopped at a non-resonance floor, which is a low-risk floor, or whether the car 4 is stopped at a resonance floor, which is a non-low-risk floor. When the S-waves are detected, the situation detection unit 14 detects whether the car door 5 of the stopped car 4 is in a fully closed state or is stationary in a fully closed state, or whether the car door 5 of the stopped car 4 is moving by opening or closing. Furthermore, the situation detection unit 14 can detect a situation that is a combination of multiple situations.

[0022] The diagnosis unit 15 controls the diagnostic operation. At least two diagnostic modes that require different times are set for the diagnostic operation. The following describes a case where three diagnostic modes are set. Specifically, the elevator system 1 is set to a short-time mode diagnostic operation, a medium-time mode diagnostic operation, and a long-time mode diagnostic operation.

[0023] In the short-time mode diagnostic operation, the car 4 runs at the same rated speed as in normal operation. That is, the diagnostic unit 15 collects various data while moving the car 4 at the rated speed and performs safety diagnosis. Furthermore, the number of diagnostic items in the short-time mode diagnostic operation may be the fewest compared to the other two diagnostic modes. For example, in the short-time mode diagnostic operation, the diagnostic items related to the opening and closing of the car door 5 may be simplified or omitted. The time required for the short-time mode diagnostic operation is the shortest compared to the other two diagnostic modes.

[0024] In diagnostic operation in the medium time mode, the car 4 travels at a manual speed. The manual speed is the speed at which an operator manually travels the car 4 during inspection, etc., and is slower than the rated speed. That is, the diagnostic unit 15 collects various data and performs safety diagnosis while moving the car 4 at the manual speed. Furthermore, the number of diagnostic items in diagnostic operation in the medium time mode may be greater than the number of diagnostic items in diagnostic operation in the short time mode, or may be fewer than the number of diagnostic items in diagnostic operation in the long time mode. In diagnostic operation in the medium time mode, a more precise and intensive diagnosis is performed compared to diagnostic operation in the short time mode. The time required for diagnostic operation in the medium time mode is longer than the time required for diagnostic operation in the short time mode, but shorter than the time required for diagnostic operation in the long time mode.

[0025] During diagnostic operation in the long-time mode, the car 4 travels at a slow speed. The slow speed is slower than the manual speed. That is, the diagnostic unit 15 collects various data while moving the car 4 at a slow speed and performs safety diagnosis. Furthermore, the number of diagnostic items during diagnostic operation in the short-time mode may be the largest compared to the other two diagnostic modes. In this way, diagnostic operation in the long-time mode performs a more precise and intensive diagnosis compared to the other two diagnostic modes. Furthermore, if an abnormality occurs inside the hoistway 50, the possibility of a more serious abnormality occurring as a result of diagnostic operation is lowest compared to the other two diagnostic modes. The time required for diagnostic operation in the long-time mode is the longest compared to the other two diagnostic modes.

[0026] The diagnosis unit 15 determines which of the multiple diagnostic modes to perform and the order in which to perform them, depending on the situation detected by the situation detection unit 14. The combination of the order in which the diagnostic operations are performed can be set in advance, and several patterns can be assumed.

[0027] The operation control unit 11 restarts normal operation of the car 4 as a return to normal operation after the diagnostic mode requiring the shortest time among the diagnostic modes determined to be executed by the diagnostic unit 15 has been executed.

[0028] Specifically, when the diagnosing unit 15 determines that a first control will be performed in which a short-time mode diagnostic operation is performed after a long-time mode diagnostic operation, the operation control unit 11 starts normal operation of the car 4 after the short-time mode diagnostic operation. When the diagnosing unit 15 determines that a second control will be performed in which a short-time mode diagnostic operation is performed without performing a long-time mode diagnostic operation, the operation control unit 11 starts normal operation of the car 4 after the short-time mode diagnostic operation. Note that even when a diagnostic operation using a single diagnostic mode or a combination of diagnostic modes other than the first control and the second control is performed, the operation control unit 11 returns to normal operation after performing the diagnostic mode that requires the shortest time among them.

[0029] In addition, when a diagnostic operation in medium time mode or a diagnostic operation in short time mode is performed after any other diagnostic mode, diagnostic items of the diagnostic operation in medium time mode or the diagnostic operation in short time mode that have already been performed in the previous diagnostic mode may be omitted from being performed.

[0030] If an abnormality is detected during diagnostic operation in any of the diagnostic modes, the diagnostic unit 15 interrupts the diagnostic operation. In this case, the control device 10 remains stopped until a manual recovery operation is performed by an operator.

[0031] Next, examples of combinations of diagnostic modes and the operation of the control device 10 at those times will be described with reference to FIGS. 3 to 6 are flowcharts showing the operation of the control device in the first embodiment.

[0032] The flowchart in Figure 3 is an example of a case where three diagnostic modes are combined depending on the situation. Note that before the operation of the flowchart starts, car 4 may be parked at a low-risk or non-low-risk floor due to the detection of a P wave or the fulfillment of a standby condition. For example, the flowchart in Figure 3 starts after the detection of a P wave caused by an earthquake.

[0033] In step S001, the earthquake response unit 13 determines whether or not S waves have been detected by the earthquake detector 6. If S waves have not been detected in step S001, the operation of step S001 is repeated.

[0034] If an S-wave is detected in step S001, the operation of step S002 is performed. In step S002, the situation detection unit 14 detects the situation of the elevator system 1 when the S-wave is detected in step S001.

[0035] Then, in step S003, the diagnosis unit 15 determines whether the diagnosis conditions are met. For example, when the measurement value of an accelerometer provided in the control device 10 or the like is smaller than a specified threshold, the diagnosis unit 15 determines that the diagnosis conditions are met. If it is not determined in step S003 that the diagnosis conditions are met, the operation of step S003 is repeated.

[0036] If it is determined in step S003 that the diagnostic conditions are satisfied, the operation of step S004 is performed. In step S004, the diagnostic unit 15 determines whether or not the car 4 is in a traveling state when the S-wave is detected.

[0037] If it is determined in step S004 that car 4 is not in motion, i.e., that car 4 is stopped, the operation of step S005 is performed. In step S005, the diagnosis unit 15 determines whether it has been determined in step S002 that car 4 is stopped at a non-resonance floor, which is a low-risk floor.

[0038] If the situation detected in step S005 is that the car 4 is parked at a non-resonant floor, the operation of step S006 is performed. In step S006, the diagnosis unit 15 starts a diagnostic operation in the short time mode. That is, instead of the first control, the diagnosis unit 15 executes a second control in which a diagnostic operation in the short time mode is performed without performing a diagnostic operation in the long time mode or the medium time mode, which require a longer time.

[0039] After the short-time mode diagnostic operation is completed in step S006, in step S007 the operation control unit 11 returns to normal operation and starts normal operation of the car 4. Thereafter, the operation of the flowchart ends.

[0040] In step S005, if the situation detected is that the car 4 is parked at a resonance floor that is a non-low-risk floor, the operation of step S008 is performed. In step S008, the diagnosis unit 15 determines whether the situation detected in step S002 is that the car door 5 is moving.

[0041] If it is determined in step S008 that the situation detected in step S002 was not a situation in which the car door 5 was moving, i.e., a situation in which the car door 5 was stationary, the operation of step S009 is performed. In step S009, the diagnosis unit 15 starts a diagnosis operation in the medium time mode.

[0042] After the diagnostic operation in the medium-time mode is completed in step S009, the operation in step S006 is performed. That is, the diagnostic unit 15 executes control to perform the diagnostic operation in the medium-time mode without performing the diagnostic operation in the long-time mode, and then to perform the diagnostic operation in the short-time mode, which requires a shorter time. This control can also be considered as the first control. Then, the operation in step S007 is performed.

[0043] If it is determined in step S004 that the car 4 was in motion when the S-wave was detected, or if it is determined in step S008 that the car door 5 was in motion, the operation of step S010 is performed. In step S010, the diagnostic unit 15 starts diagnostic operation in the long-time mode.

[0044] After the long-time mode diagnostic operation is completed in step S010, the operation of step S006 is performed. That is, the diagnostic unit 15 executes the second control of performing the long-time mode diagnostic operation and then the short-time mode diagnostic operation. Then, the operation of step S007 is performed.

[0045] Note that the operation of step S009 may be performed after the diagnostic operation in the long time mode is completed in step S010. That is, the diagnostic unit 15 may execute control to sequentially perform diagnostic operations in the long time mode, the medium time mode, and the short time mode.

[0046] If an abnormality is detected during the diagnostic operation in steps S006, S009, and S010, the operation of the flowchart ends without returning to normal operation.

[0047] The flowchart of Figure 4 shows an operation in which the short-time mode diagnostic operation is not performed, as opposed to the flowchart of Figure 3. In this case, the diagnostic mode requiring the shortest time for diagnosis is the medium-time mode. That is, step S009 is performed instead of step S006. After the medium-time mode diagnostic operation is completed in step S009, the operation of step S007 is performed.

[0048] A control in which a diagnostic operation in the medium time mode is performed after a diagnostic operation in the long time mode is performed may be considered a first control. A control in which a diagnostic operation in the medium time mode is performed without a diagnostic operation in the long time mode may be considered a second control.

[0049] The flowchart in FIG. 5 shows the operation when the only item for determining the diagnostic mode is whether or not a situation in which car 4 is parked at a non-resonant floor has been detected.

[0050] If it is determined in step S003 that the diagnostic conditions are met, the operation of step S005 is performed. If the situation detected in step S005 is that the car 4 is parked at a non-resonant floor, the operation of step S006 is performed. That is, the diagnostic unit 15 executes the second control of performing diagnostic operation in the short time mode without performing diagnostic operation in the medium time mode.

[0051] In step S005, if the detected situation is that the car 4 is parked at the resonant floor, the operation of step S009 is performed. After the operation of step S009, the operations from step S006 onwards are performed. That is, the diagnosis unit 15 executes the first control of performing a diagnostic operation in the medium time mode and then a diagnostic operation in the short time mode.

[0052] In step S009, instead of performing diagnostic operation in the medium time mode, diagnostic operation in the long time mode may be performed.

[0053] The flowchart in FIG. 6 shows the operation when the only item for determining the diagnostic mode is whether or not a condition in which the car 4 is traveling has been detected.

[0054] If it is detected in step S003 that the diagnostic conditions are satisfied, the operation of step S004 is performed. If it is determined in step S004 that the detected situation is a situation in which car 4 is stopped, the operation of step S006 is performed. That is, the diagnostic unit 15 executes the second control of performing diagnostic operation in short-time mode without performing diagnostic operation in long-time mode.

[0055] If it is determined in step S004 that the detected situation is one in which car 4 is traveling, the operation of step S010 is performed. After the diagnostic operation in the long-time mode is completed in step S010, the operation of step S006 is performed. That is, the diagnostic unit 15 executes the first control of performing the diagnostic operation in the long-time mode and then the diagnostic operation in the short-time mode.

[0056] In step S010, instead of performing diagnostic operation in the long-time mode, diagnostic operation in the medium-time mode may be performed.

[0057] According to the first embodiment described above, the control device 10 of the elevator system 1 includes the situation detection unit 14, the diagnosis unit 15, and the operation control unit 11 as its functions. When an S-wave is detected, the diagnosis unit 15 selects, depending on the situation, either a first control, which performs a long-time diagnostic operation in a long-time mode followed by a short-time diagnostic operation in a short-time mode, or a second control, which performs only the short-time diagnostic operation. In conventional diagnostic operations, the first control is executed, in which the car speed is gradually increased from a very slow speed to perform a diagnosis. Depending on the situation when an S-wave is detected, a detailed diagnostic operation that includes unnecessary inspection items may not be necessary. In such cases, the second control may be executed. The second control completes the diagnostic operation in a shorter time than the first control. This allows automatic diagnosis of the elevator system 1 after an earthquake and allows the car 4 to resume operation more quickly.

[0058] Furthermore, the diagnosis unit 15 selects whether to execute the first control or the second control depending on whether the car 4 was parked at a low-risk floor or a non-low-risk floor when the S-wave was detected. In particular, a low-risk floor is a non-resonance floor, and a non-low-risk floor is a resonance floor. Therefore, when the car 4 is parked at a low-risk floor, the operation of the car can be resumed more quickly.

[0059] Furthermore, the diagnosis unit 15 selects whether to execute the first control or the second control depending on whether the car 4 is stopped or running when the S-wave is detected. Therefore, when the risk of failure is low, such as when the car 4 is stopped, the operation of the car can be resumed more quickly.

[0060] Furthermore, the diagnostic unit 15 selects whether to execute the first control or the second control depending on whether the car door 5 is stationary or moving when the S-wave is detected. The long-term mode and short-term mode indicate two diagnostic modes in which the time required for diagnostic operation is relatively long or short. Therefore, when the risk of failure is low, such as when the car door 5 is stationary, the operation of the car 4 can be resumed more quickly.

[0061] Furthermore, the diagnostic unit 15 performs diagnostic operations in the long-time mode, the medium-time mode, and the short-time mode, either individually or in combination, depending on the situation when the S-wave is detected. This allows the car 4 to resume operation sooner depending on the low risk of failure.

[0062] It should be noted that the elevator system 1 may be equipped with multiple cars 4, and the waiting floors may be divided into cars 4 that wait at non-resonant floors and cars 4 that wait at resonant floors. Even in this case, the same control as in embodiment 1 may be applied to each individual car 4. A car 4 parked at a non-resonant floor has low operating efficiency during normal operation, but can return to normal operation more quickly during an earthquake than a car 4 parked at a resonant floor. This allows the elevator system 1 to improve operating efficiency during an earthquake.

[0063] Next, an example of hardware constituting the control device 10 will be described with reference to FIG. FIG. 7 is a hardware configuration diagram of the control device according to the first embodiment.

[0064] Each function of the control device 10 may be realized by a processing circuit. For example, the processing circuit may include at least one processor 100a and at least one memory 100b. For example, the processing circuit may include at least one dedicated hardware 200.

[0065] When the processing circuit includes at least one processor 100a and at least one memory 100b, each function of the control device 10 is implemented by software, firmware, or a combination of software and firmware. At least one of the software and firmware is written as a program. At least one of the software and firmware is stored in the at least one memory 100b. The at least one processor 100a implements each function of the control device 10 by reading and executing the program stored in the at least one memory 100b. The at least one processor 100a is also referred to as a central processing unit, processing device, arithmetic unit, microprocessor, microcomputer, or DSP. For example, the at least one memory 100b may be a non-volatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, or EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a minidisk, or a DVD.

[0066] When the processing circuit includes at least one dedicated hardware 200, the processing circuit may be realized, for example, as a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof. For example, each function of the control device 10 may be realized by a processing circuit. For example, each function of the control device 10 may be realized collectively by a processing circuit.

[0067] Some of the functions of the control device 10 may be realized by dedicated hardware 200, and the remaining functions may be realized by software or firmware. For example, the function of performing diagnosis in diagnostic operation may be realized by a processing circuit as dedicated hardware 200, and functions other than the function of performing diagnosis in diagnostic operation may be realized by at least one processor 100a reading and executing a program stored in at least one memory 100b.

[0068] Thus, the processing circuitry implements the functions of the control device 10 in hardware 200, software, firmware, or a combination thereof.

[0069] At least some of the functions of the control device 10 may be implemented on a cloud server. In this case, the processing circuit is composed of multiple partial circuits. The multiple partial processing circuits are provided in each of the multiple devices that make up the cloud server. The multiple devices that make up the cloud server may each be provided in a different building. In this case, the functions of the control device 10 implemented on the cloud server are involved in the control of the elevator device by communicating with the control panel of the elevator device via a network. [Explanation of symbols]

[0070] 1 elevator system, 2 hoisting machine, 3 main rope, 4 car, 5 car door, 6 earthquake detector, 10 control device, 11 operation control unit, 12 standby unit, 13 earthquake response unit, 14 situation detection unit, 15 diagnosis unit, 50 elevator shaft, 51 building, 52 machine room, 53 landing, 100a processor, 100b memory, 200 hardware

Claims

1. An elevator control device that automatically performs diagnostic operation on a car to return to normal operation after the car has stopped due to an earthquake, a situation detection unit that detects the situation of the car when an S wave caused by an earthquake is detected by an earthquake detector; a diagnostic unit that executes first control to perform a diagnostic operation in a short-time mode, which requires a shorter time than the long-time mode, after performing a diagnostic operation in the long-time mode; an operation control unit that controls the normal operation of the car and starts the normal operation of the car after an S-wave due to an earthquake is detected and the diagnostic operation in the short-time mode is completed; Equipped with the diagnosing unit executes, in response to the situation detected by the situation detecting unit, a second control that performs a diagnostic operation in the short time mode without executing a diagnostic operation in the long time mode, instead of the first control. Control device.

2. the situation detection unit, when an S wave is detected, detects whether the car is parked at a low-risk floor where there is a low possibility that operation will be disrupted by an earthquake, or whether the car is parked at a non-low-risk floor that is not the low-risk floor; The diagnostic unit When an S wave is detected, if it is detected that the car is stopped at the low-risk floor, the second control is executed; When an S wave is detected and it is detected that the car is stopped at the non-low risk floor, the first control is executed. The control device according to claim 1 .

3. the situation detection unit detects, when an S wave is detected, whether the car is stopped or traveling; The diagnostic unit When the S wave is detected, if it is detected that the car is stopped, the second control is executed; When the S wave is detected and it is determined that the car is traveling, the first control is executed. The control device according to claim 1 .

4. the situation detection unit detects, when an S wave is detected, whether a car door of the stopped car is stationary or whether the car door of the stopped car is moving; The diagnostic unit When an S wave is detected, if it is detected that the car door of the stopped car is stationary, the second control is executed; execute the first control when it is detected that the car door of the stopped car is moving when the S wave is detected; The control device according to claim 1 .

5. the situation detection unit detects, when an S wave is detected, one of the following situations: the car is traveling; the car is stopped at a low-risk floor where there is a low possibility that operation will be disrupted by an earthquake; the car is stopped at a non-low-risk floor that is not the low-risk floor and the car door is stationary; and the car is stopped at the non-low-risk floor and the car door is stationary; The diagnostic unit It is possible to cause the car to perform a diagnostic operation in a medium time mode which requires a longer time than the short time mode and a shorter time than the long time mode, When an S wave is detected and it is detected that the car is stopped at the low-risk floor, the first control is executed; execute the second control when it is detected that the car is traveling when an S wave is detected, or when it is detected that the car is stopped at the non-low risk floor and the car door is moving when an S wave is detected; When an S wave is detected and it is detected that the car is stopped at the non-low risk floor and the car door is stationary, instead of the first control, a control is executed to perform a diagnostic operation in the medium time mode without performing a diagnostic operation in the long time mode, and then to perform a diagnostic operation in the short time mode. The control device according to claim 1 .

6. The low-risk floor is a non-resonant floor that is determined to be unlikely to cause an abnormality in equipment inside the elevator shaft due to the swinging of a long object in the elevator shaft when an earthquake occurs while the car is stopped, The non-low-risk floor is a resonance floor determined to have a higher possibility of causing an abnormality in equipment inside the elevator shaft due to the shaking of the long object when an earthquake occurs while the elevator car is stopped than when the elevator car is stopped on the non-resonance floor. The control device according to claim 2 or claim 5.

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