Elevator system

Abstract

An elevator system capable of grasping a car position without passing through an intermediate floor having a seismic isolation device at the time of an earthquake and implementing necessary operation. The elevator system has a car that is raised and lowered in a shaft provided throughout a first floor that is higher than an intermediate floor having a seismic isolation device and a second floor that is lower than the intermediate floor, a position detecting device that continuously detects a car position, a control device that controls the car based on the car position, an abnormality detecting section that detects an inability of the position detecting device to detect the car position, a position correction device that is provided in the shaft and corrects the detected car position, and a position correction detecting section that is provided in the car and detects the position correction device. The position correction device has a first position correction device that is detected when the car position is the second floor and a second position correction device that is detected when the car position is a floor that is one floor above the intermediate floor. When the car position cannot be detected at the time of an earthquake, the control device causes the car to descend until the first or second position correction device is detected by the position correction detecting section.

Description

Technical Field

[0001] This disclosure relates to elevator systems. Background Technology

[0002] The following technology is known: When a control unit that controls the operation of an elevator stops the car at the nearest floor based on a sway detection unit, the control unit performs operation control based on the car position / speed / direction information from the car position / speed / direction detection unit, the vibration isolation structure position information from the vibration isolation structure position storage unit, and the car braking distance information at emergency stop from the emergency stop distance storage unit, so as to avoid the car stopping at the vibration isolation structure, that is, to make the car pass through the vibration isolation structure or stop in front of it (for example, see Patent Document 1).

[0003] Patent Document 1: Japanese Patent Application Publication No. 2011-026076

[0004] Thus, the elevator shown in Patent Document 1 controls the operation of the car during an earthquake, causing it to pass through or stop in front of an intermediate floor equipped with a seismic isolation structure, i.e., a seismic isolation device. On the other hand, as a technique for detecting the position of the elevator car, there are techniques that continuously detect the car's position using a linear scale installed in the shaft. In the technique shown in Patent Document 1, when the car's position cannot be detected using a linear scale due to the earthquake, the positional relationship between the intermediate floor equipped with the seismic isolation device and the car cannot be determined, making it impossible to properly control the operation and perform other necessary operations. Summary of the Invention

[0005] This disclosure was made to solve such a problem. Its purpose is to provide an elevator system in which the operation of the elevator is controlled by continuously detecting the position of the car, so that in the event of an earthquake, the position of the car can be determined and the necessary subsequent operation can be carried out without passing through intermediate floors equipped with seismic isolation devices.

[0006] The elevator system disclosed herein is installed in a building with a seismic isolation device on an intermediate floor between the uppermost and lowermost floors. The elevator system includes: a car that moves up and down within a shaft extending to a first floor above the intermediate floor and a second floor below the intermediate floor; a position detection device that continuously detects the position of the car; a control device that controls the movement of the car based on the position detected by the position detection device; a seismic detector that detects seismic vibrations in the building; an anomaly detection unit that detects a state where the position of the car cannot be detected normally by the position detection device, i.e., the car position cannot be detected; and a position correction device installed in the shaft for correcting the position of the car detected by the position detection device. The control device includes: a line correction device; and a position correction detection unit disposed in the car to detect the position correction device, the position correction device comprising: a first position correction device disposed at a position detected by the position correction detection unit when the car is located at the second floor; and a second position correction device disposed at a position detected by the position correction detection unit when the car is located at the third floor, one floor above the intermediate floor. In the event that the earthquake detector detects an earthquake and the anomaly detection unit detects that the car position cannot be detected, the control device performs the following rescue operation: lowering the car until the position correction detection unit detects either the first or the second position correction device, and then opening the door.

[0007] Alternatively, the elevator system of this disclosure is installed in a building with a seismic isolation device on an intermediate floor between the uppermost and lowermost floors. The elevator system includes: a car that moves up and down in a shaft extending over a first floor above the intermediate floor and a second floor below the intermediate floor; a position detection device that continuously detects the position of the car; a control device that controls the movement of the car based on the position detected by the position detection device; a seismic detector that detects seismic vibrations in the building; an anomaly detection unit that detects a state where the position of the car cannot be detected normally by the position detection device, i.e., the car position cannot be detected; a position correction device disposed in the shaft for correcting the position of the car detected by the position detection device; and... A position correction detection unit is disposed in the car to detect the position correction device. The position correction device includes: a first position correction device, which is disposed at a position detected by the position correction detection unit when the car is at the second floor; and a second position correction device, which is disposed at a position detected by the position correction detection unit when the car is at the third floor, one floor above the intermediate floor, or between the third floor and the intermediate floor. In the event that the earthquake detector detects an earthquake and the anomaly detection unit detects that the car position cannot be detected, the control device performs the following car position detection and operation recovery: lowering the car until the position correction detection unit detects either the first position correction device or the second position correction device.

[0008] Alternatively, the elevator system of this disclosure is installed in a building with a seismic isolation device on an intermediate floor between the uppermost and lowermost floors. The elevator system includes: a car that moves up and down in a shaft extending over a first floor above the intermediate floor and a second floor below the intermediate floor; a position detection device that continuously detects the position of the car; a control device that controls the movement of the car based on the position detected by the position detection device; a seismic detector that detects seismic vibrations in the building; an anomaly detection unit that detects a state where the position of the car cannot be detected normally by the position detection device, i.e., the car position cannot be detected; a position correction device disposed in the shaft for correcting the position of the car detected by the position detection device; and... A position correction detection unit is disposed in the car to detect the position correction device. The position correction device includes: a first position correction device disposed at a position detected by the position correction detection unit when the car is at the first floor; and a second position correction device disposed at a position detected by the position correction detection unit when the car is at the third floor, one floor below the intermediate floor, or between the third floor and the intermediate floor. In the event that the earthquake detector detects an earthquake and the anomaly detection unit detects that the car position cannot be detected, the control device performs the following car position detection and operation recovery: the car is raised until the position correction detection unit detects either the first position correction device or the second position correction device.

[0009] According to the elevator system disclosed herein, the following effect is achieved: in an elevator that controls operation by continuously detecting the position of the car, in the event of an earthquake, the position of the car can be determined without passing through an intermediate floor equipped with a seismic isolation device, and the necessary subsequent operation can be carried out. Attached Figure Description

[0010] Figure 1 This is a diagram schematically showing the overall structure of the elevator system according to Embodiment 1.

[0011] Figure 2 This is a block diagram showing the structure of the control system of the elevator system according to Embodiment 1.

[0012] Figure 3 This is a flowchart illustrating an example of the operation of the elevator system according to Embodiment 1.

[0013] Figure 4 This is a diagram illustrating an example of the structure of the control device that implements the function of the elevator system of Embodiment 1.

[0014] Label Explanation

[0015] 10 shafts

[0016] 20-carriage

[0017] 30 traction machine

[0018] 41 Lowest level

[0019] 42 Top layer

[0020] 43 Intermediate Layer

[0021] 44 floors above the middle floor, 1 floor

[0022] 50 position detection device

[0023] 51 Straight Line Scale

[0024] 52 Reading Department

[0025] 60 position calibration equipment

[0026] 61. Position Correction Equipment

[0027] 62 Second position calibration device

[0028] 70 Position Calibration and Testing Department

[0029] 80 seismic detectors

[0030] 100 control device

[0031] 101 processor

[0032] 102 memory

[0033] 103 Dedicated Hardware

[0034] 110 Car Control Department

[0035] 120 Anomaly Detection Department Detailed Implementation

[0036] The elevator system used to implement this disclosure will be described with reference to the accompanying drawings. In the drawings, identical or equivalent parts are labeled with the same reference numerals, and repetitive descriptions are simplified or omitted as appropriate. In the following description, for convenience, the positional relationships of the structures are sometimes shown based on the illustrated states. Furthermore, this disclosure is not limited to the following embodiments, and free combinations of embodiments, modifications of any structural elements of each embodiment, or omissions of any structural elements of each embodiment are possible without departing from the spirit of this disclosure.

[0037] Implementation Method 1

[0038] Reference Figures 1-4 Embodiment 1 of this disclosure will be described. Figure 1 It is a diagram schematically showing the overall structure of the elevator system. Figure 2 This is a block diagram showing the structure of the control system of the elevator system. Figure 3 This is a flowchart illustrating an example of the operation of an elevator system. Figure 4 This is a diagram illustrating an example of the structure that enables the control device of an elevator system to function.

[0039] Buildings equipped with elevator systems according to this embodiment have intermediate floor seismic isolation structures. That is, in Figure 1 The intermediate floor 43 between the uppermost floor 42 and the lowermost floor 41 of the building shown is equipped with a seismic isolation device. In this disclosure, the floor equipped with the seismic isolation device is simply referred to as the intermediate floor 43.

[0040] The main body of the building is divided into an upper side and a lower side at the intermediate floor 43. Seismic isolation devices are installed between the upper and lower sides of the building structure. The seismic isolation devices include isolators and dampers. The isolators are, for example, laminated rubber. Laminated rubber has a structure consisting of alternating layers of rubber and steel plates. The dampers are, for example, hydraulic dampers or steel dampers. By installing seismic isolation devices at the intermediate floor 43, large-scale shaking of the entire building during an earthquake can be suppressed.

[0041] like Figure 1 As shown, a shaft 10 is formed in a building equipped with an elevator. The shaft 10 extends to the 1st floor and the 2nd floor. The 1st floor is the floor above the intermediate floor 43. The 2nd floor is the floor below the intermediate floor 43.

[0042] In the structural example shown in the diagram, the first floor is the top floor 42, and the second floor is the bottom floor 41.

[0043] The elevator has a car 20 and a counterweight (not shown). The car 20 and the counterweight are guided by guide rails (not shown) to move up and down within the hoistway 10. The car 20 is a box-shaped structure used to transport passengers, goods, etc. The counterweight is a counterweight used to balance the weight of the car 20.

[0044] A machine room is located at the top of the hoistway 10. A traction machine 30 and a control device 100 are housed within the machine room. The traction machine 30 is the power source for raising and lowering the car 20. One end of the main rope is connected to the upper end of the car 20. The other end of the main rope is connected to the upper end of the counterweight. The middle portion of the main rope is wound around the sheave and deflector of the traction machine 30. Thus, the car 20 and the counterweight are suspended by the main rope in a bucket-like shape, rising and falling in opposite directions within the hoistway 10. Figure 1 In the structural example shown, the main rope suspends the car 20 and the counterweight in a 1:1 winding manner within the hoistway 10. However, the winding manner is not limited to this; for example, a 2:1 winding manner could also be used.

[0045] The elevator system of this embodiment also includes a position detection device 50. The position detection device 50 continuously detects the position of the car 20. In the structural example described here, the position detection device 50 includes a linear scale 51 and a reading unit 52. The linear scale 51 is provided along the movement path of the car 20. The linear scale 51 carries position information within the hoistway 10. The reading unit 52 is provided in the car 20. The reading unit 52 reads position information from the linear scale 51. The position information read by the reading unit 52 is sent to a car-mounted device (not shown) located above the car 20. The car-mounted device transmits the position information read by the linear scale 51 from the reading unit 52 to the control device 100 via a control cable (not shown).

[0046] Furthermore, the position detection device 50 can continuously detect the position of the car 20, and is not limited to having a linear scale 51 and a reading unit 52. Alternatively, for example, the position detection device 50 can also use an encoder or the like to detect the rotation amount of a speed limiter (not shown) that is linked to the movement of the car 20, thereby continuously detecting the position of the car 20.

[0047] The elevator system in this embodiment also includes a position correction device 60. The position correction device 60 is used to correct the position of the car 20. The position correction device 60 is disposed at a predetermined position within the hoistway 10. A position correction detection unit 70 is provided in the car 20. The position correction detection unit 70 is a sensor that detects the position correction device 60. Since the position where the position correction device 60 is located is known, the position of the car 20 when the position correction detection unit 70 detects the position correction device 60 can be determined. Thus, the position of the car 20 when the position correction detection unit 70 detects the position correction device 60 can be determined, and the position of the car 20 detected by the position detection device 50 can be corrected based on the determined position. This position correction can address the decrease in position detection accuracy caused by deterioration over time, including wear and tear on the position detection device 50.

[0048] Alternatively, the position correction device 60 can be, for example, a landing plate that specifies the stopping position of the car 20. By using a landing plate as the position correction device 60, there is no need to install a dedicated device for correction of the position detection device 50, which simplifies the structure. In this case, the position of the position correction device 60 as the landing plate corresponds to the floor where the car 20 stops.

[0049] In this embodiment, all actions in the elevator system, including the operation of the car 20, are controlled by the control device 100. Figure 2The structure of the control system of the elevator system according to the embodiment is shown. As shown in the figure, the control device 100 has a car control unit 110 and an anomaly detection unit 120 as its functional structures. The car control unit 110 mainly controls the operation of the traction machine 30, the braking device (not shown), etc., thereby controlling the operation of the car 20. At this time, the car control unit 110 determines the accurate position of the car 20 based on the position of the car 20 detected by the position detection device 50 and the detection results of the position correction detection unit 70 on the position correction device 60, and controls the travel and stopping of the car 20.

[0050] The anomaly detection unit 120 detects that the car position cannot be detected. "Cannot detect car position" means that the position of the car 20 cannot be detected normally by the position detection device 50. Specifically, for example, if the reading unit 52 cannot read position information from the linear scale 51, the anomaly detection unit 120 detects that the car position cannot be detected. For example, if the reading unit 52 cannot read position information from the linear scale 51, it sends a reading error signal to the control device 100. Upon receiving the reading error signal from the reading unit 52, the anomaly detection unit 120 detects that the car position cannot be detected.

[0051] Alternatively, the anomaly detection unit 120 can detect the inability to detect the car position based on the matching between the position information read by the reading unit 52 and the detection value of the encoder installed on the traction machine 30. The detection value of the encoder of the traction machine 30 represents the rotation amount of the sheave of the traction machine 30, which is related to the relative travel distance of the car 20. Therefore, for example, if there is a certain deviation between the travel distance of the car 20 calculated based on the detection value of the encoder of the traction machine 30 and the travel distance of the car 20 calculated based on the position information read by the reading unit 52, the anomaly detection unit 120 determines that the position information read by the reading unit 52 and the detection value of the encoder of the traction machine 30 do not match. Then, if the anomaly detection unit 120 determines that they do not match, it detects that the car position cannot be detected based on the position detection device 50.

[0052] In addition, for example, the anomaly detection unit 120 can also detect the inability to detect the car position when there is a communication anomaly between the reading unit 52 and the control device 100. As described above, the position information read by the reading unit 52 of the car 20 is transmitted to the control device 100 via the car equipment and control cable. The anomaly detection unit 120 monitors the communication status between the reading unit 52 and the control device 100. Then, in the event of a communication interruption between them, or in the event of an error such as damage detected in the signal sent from the reading unit 52, the anomaly detection unit 120 detects the inability to detect the car position due to a communication anomaly between the reading unit 52 and the control device 100.

[0053] like Figure 2 As shown, the elevator system in this embodiment also includes a seismic detector 80. The seismic detector 80 detects seismic vibrations in the building where the elevator system is installed. The detection results of the seismic detector 80 are input to the control device 100.

[0054] In the elevator system of this embodiment, such as Figure 1 and Figure 2 As shown, the position correction device 60 is provided with at least two such devices: a first position correction device 61 and a second position correction device 62. The first position correction device 61 is located at the position detected by the position correction detection unit 70 when the car 20 is at the second floor. In this disclosure, the position of the position correction device 60 detected by the position correction detection unit 70 when the car 20 is at "floor A" is referred to as the "position corresponding to floor A". Furthermore, the second position correction device 62 is located at the position detected by the position correction detection unit 70 when the car 20 is at the third floor. The third floor is floor 44, which is one floor above the intermediate floor. In other words, in this case, the second position correction device 62 is located at the position corresponding to floor 44 (the third floor), which is one floor above the intermediate floor.

[0055] In the elevator system of this embodiment, if the earthquake detector 80 detects an earthquake and the anomaly detection unit 120 detects that the car position cannot be detected, the car control unit 110 of the control device 100 performs a rescue operation. The rescue operation is as follows: the car 20 is lowered until the position correction detection unit 70 detects either the first position correction device 61 or the second position correction device 62, and then the car 20 doors are opened.

[0056] When the earthquake detector 80 detects an earthquake of a certain magnitude or greater, the elevator operation is stopped immediately. At this time, since the position detection device 50 is unable to perform car position detection, the operation cannot be carried out based on the car position detection results of the position detection device 50. If there are passengers in the car 20, they will be trapped in the car 20 that has been stopped in an emergency.

[0057] In an elevator system configured as described above, during an earthquake when the position detection device 50 is unable to detect the car's position, the car 20 is lowered by targeting either the first position correction device 61 or the second position correction device 62 until the position correction detection unit 70 detects either one. Thus, without relying on the car's position detection of the position detection device 50, the car 20 can be driven to the floor where the position correction devices 60 are installed. Then, by detecting the position correction device 60, the position of the car 20 at that point in time can be determined, and the car 20 can be stopped at the floor where the position correction device 60 is installed. The car 20 then opens its doors at that floor to release the passengers inside.

[0058] At this time, since there is a seismic isolation layer in the intermediate floor 43, it is assumed that due to the influence of earthquake vibrations, the hoistway 10 may shift in the intermediate floor 43, potentially hindering the car 20 from passing through the intermediate floor 43. In the elevator system of this embodiment, as described above, a first position correction device 61 is provided at a position corresponding to the second floor (the lowest floor 41 in this structural example) which is lower than the intermediate floor 43, and a second position correction device 62 is provided at a position corresponding to the third floor (the floor 44) which is one floor above the intermediate floor. Therefore, when the car 20 is located below the intermediate floor 43, during the rescue operation, the car 20 descends to the second floor (the lowest floor 41) where the first position correction device 61 is provided, and the door opens on that second floor. Furthermore, when the car 20 is located above the intermediate floor 43, during the rescue operation, the car 20 descends to the third floor (the floor 44) where the second position correction device 62 is provided, and the door opens on that third floor. Therefore, in the event of an earthquake, the elevator car 20 can be located without passing through the intermediate floor 43 which is equipped with a seismic isolation device, and the elevator car 20 can be stopped and the doors opened on the floor for rescue operations.

[0059] Next, refer to Figure 3 The flowchart below illustrates an example of the operation of the elevator system in this embodiment. First, in step S10, when the earthquake detector 80 detects an earthquake vibration, in step S11, the anomaly detection unit 120 determines whether the car position cannot be detected, i.e., whether the position of the car 20 cannot be detected normally by the position detection device 50. If the car position is not undetectable, the control device 100 proceeds to step S12. In step S12, the car control unit 110 of the control device 100 performs a normal rescue operation using the car position detected by the position detection device 50. The normal rescue operation involves moving the car 20 to the nearest rescue floor and opening the door. Furthermore, at this time, the rescue floor is selected without passing through the intermediate floor 43, which has a seismic isolation layer.

[0060] On the other hand, if the car position cannot be detected in step S11, the control device 100 proceeds to step S13. In step S13, the car control unit 110 lowers the car 20. In the next step S14, the car control unit 110 determines whether the position correction detection unit 70 has detected the first position correction device 61 or the second position correction device 62. Then, if the position correction device 60 is not detected, the car control unit 110 returns to step S13 and continues processing, causing the car 20 to continue lowering. Then, if the position correction detection unit 70 detects the first position correction device 61 or the second position correction device 62, the control device 100 proceeds to step S15. In step S15, the car control unit 110 stops the car 20 and opens the door. Thus, if the position correction device 60 detected in step S14 is the first position correction device 61, the car 20 is stopped and the door is opened at the lowest floor 41. Furthermore, if the position correction device 60 detected in step S14 is the second position correction device 62, the car 20 is stopped and the door is opened at the floor 44, which is one floor above the intermediate floor.

[0061] Next, a variation of the elevator system according to this embodiment will be described. In the structural example described above, if the position detection device 50 is unable to detect the car position during an earthquake, a rescue operation is performed as follows: the car 20 is lowered until the first position correction device 61 or the second position correction device 62 is detected, and then the car 20 doors are opened. In contrast, in this variation, if the car position cannot be detected during an earthquake, a car position detection and recovery operation is performed instead of a rescue operation.

[0062] The car position detection recovery operation is performed as follows: the car 20 is lowered until the position correction detection unit 70 detects either the first position correction device 61 or the second position correction device 62. That is, during the car position detection recovery operation, only the car 20 is lowered until either the first position correction device 61 or the second position correction device 62 is detected, without performing the final door opening of the car 20 as done during the rescue operation. Through this car position detection recovery operation, by lowering the car until the position correction detection unit 70 detects either the first position correction device 61 or the second position correction device 62, the reference position of the car position detection is recalibrated. If the inability to detect a temporary situation due to the earthquake's impact on the car position, the car position detection based on the position detection device 50 can be restored.

[0063] In this modified example, the car control unit 110 of the control device 100 can also perform rescue operations after the car position detection is restored. In this case, the rescue operation involves stopping the car 20 at a stopable floor and then opening its doors. The floor where the car 20 is stopped and its doors are opened can be the second floor (the lowest floor 41) or the third floor (the floor 44 one floor above the intermediate floor), or it can be a different floor. For example, if the lowest floor 41 is a basement or not a floor with a building entrance, considering subsequent evacuation, a floor with a building entrance is considered better than the lowest floor 41 if it can be used for releasing passengers. According to this modified example, in the event of an earthquake, the car 20 can restore its position detection and then perform necessary operations such as rescue operations without passing through the intermediate floor 43 equipped with a seismic isolation device.

[0064] In this modified example, where car position detection is performed separately for both resumption of operation and rescue operation, the location of the second position correction device 62 may not correspond to the third floor (floor 44, the floor above the intermediate floor), but rather to the position detected by the position correction detection unit 70 when the car 20 is positioned between the third floor and the intermediate floor 43. However, this is only possible if the second position correction device 62 is not a landing plate.

[0065] In the structural example described above, the car 20 is lowered during rescue operations or car position detection and recovery operations. However, in these operations, the car 20 may be raised instead of lowered. In this case, the first position correction device 61 is installed at the position detected by the position correction detection unit 70 when the car 20 is at the first floor (the uppermost floor 42 in the example described here). Furthermore, the second position correction device 62 is installed at the position detected by the position correction detection unit 70 when the car 20 is at the third floor, one floor below the middle floor. In other words, the third floor where the second position correction device 62 is installed is the floor one floor below the middle floor where the car 20 is located.

[0066] Then, if the earthquake detector 80 detects an earthquake and the anomaly detection unit 120 detects that the car position cannot be detected, the car control unit 110 of the control device 100 performs the following car position detection to resume operation: the car 20 is raised until the position correction detection unit 70 detects either the first position correction device 61 or the second position correction device 62. Furthermore, as before, the location of the second position correction device 62 may not correspond to the third floor (the floor one floor below the intermediate floor), but rather be the location detected by the position correction detection unit 70 when the car 20 is positioned between the third floor and the intermediate floor 43.

[0067] Figure 4 This figure illustrates an example of the structure that implements the function of the control device 100 in this embodiment. The function of the control device 100 is implemented, for example, by a processing circuit. The processing circuit may also have a processor 101 and a memory 102. The processing circuit may also be dedicated hardware 103. A portion of the processing circuit may also be formed as dedicated hardware 103, and the processing circuit may also further include a processor 101 and a memory 102. In the example shown in this figure, a portion of the processing circuit is formed as dedicated hardware 103. Furthermore, in the example shown in this figure, the processing circuit also includes a processor 101 and a memory 102.

[0068] A portion is a processing circuit of at least one dedicated hardware 103, such as a single circuit, a composite circuit, a programmable processor, a parallel programmable processor, an ASIC, an FPGA, or a combination thereof. When the processing circuit has at least one processor 101 and at least one memory 102, the function of the control device 100 is implemented through software, firmware, or a combination of both.

[0069] Software and firmware are described as programs and stored in memory 102. Processor 101 reads and executes the programs stored in memory 102, thereby implementing the functions of each part. Processor 101 is also called CPU (Central Processing Unit), central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, or DSP. Memory 102 is, for example, non-volatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, and EEPROM, or disk, floppy disk, optical disk, high-density disk, mini disk, and DVD.

[0070] Thus, the processing circuitry of the control device 100 can implement the various functions of the control device 100 through hardware, software, firmware, or a combination thereof. When the processing circuitry of the control device 100 has at least a processor 101 and a memory 102, the processor 101 executes the program stored in the memory 102, and the hardware and software of the control device 100 cooperate to realize the functions of each part of the control device 100. Furthermore, the elevator system is not limited to a structure where the operation is controlled by a single control device 100. The elevator system can also be controlled by the cooperation of multiple devices.

[0071] Furthermore, within this disclosure, various embodiments, structural examples, and modifications can be arbitrarily combined without departing from the spirit of this disclosure. Examples of the various methods of this disclosure are hereby uniformly recorded as appendices.

[0072] (Postscript 1)

[0073] An elevator system is provided in a building where a seismic isolation device is installed on an intermediate floor between the uppermost and lowermost floors, wherein the elevator system has:

[0074] The car moves up and down in a shaft that extends over the first floor, which is above the intermediate floor, and the second floor, which is below the intermediate floor.

[0075] A position detection device that continuously detects the position of the car;

[0076] A control device that controls the movement of the car based on the position of the car detected by the position detection device;

[0077] Earthquake detectors that detect seismic vibrations in the building;

[0078] The anomaly detection unit is unable to detect the position of the car normally by the position detection device, i.e., it cannot detect the position of the car.

[0079] A position correction device, installed within the hoistway, is used to correct the position of the car detected by the position detection device; and

[0080] A position correction detection unit, installed in the car, detects the position correction device.

[0081] The position correction device has:

[0082] A first position correction device is installed at the position detected by the position correction detection unit when the car is at the second floor; and

[0083] The second position correction device is installed at the position detected by the position correction detection unit when the car is located on the third floor, one floor above the intermediate floor.

[0084] If the earthquake detector detects an earthquake and the anomaly detection unit detects that the car position cannot be detected, the control device performs the following rescue operation: lowers the car until the position correction detection unit detects either the first position correction device or the second position correction device, and then opens the door.

[0085] (Postscript 2)

[0086] An elevator system is provided in a building where a seismic isolation device is installed on an intermediate floor between the uppermost and lowermost floors, wherein the elevator system has:

[0087] The car moves up and down in a shaft that extends over the first floor, which is above the intermediate floor, and the second floor, which is below the intermediate floor.

[0088] A position detection device that continuously detects the position of the car;

[0089] A control device that controls the movement of the car based on the position of the car detected by the position detection device;

[0090] Earthquake detectors that detect seismic vibrations in the building;

[0091] The anomaly detection unit is unable to detect the position of the car normally by the position detection device, i.e., it cannot detect the position of the car.

[0092] A position correction device, installed within the hoistway, is used to correct the position of the car detected by the position detection device; and

[0093] A position correction detection unit, installed in the car, detects the position correction device.

[0094] The position correction device has:

[0095] A first position correction device is installed at the position detected by the position correction detection unit when the car is at the second floor; and

[0096] The second position correction device is installed at the position detected by the position correction detection unit when the car is located on the third floor, one floor above the intermediate floor, or between the third floor and the intermediate floor.

[0097] If the earthquake detector detects an earthquake and the anomaly detection unit detects that the car position cannot be detected, the control device performs the following car position detection to resume operation: lowers the car until the position correction detection unit detects either the first position correction device or the second position correction device.

[0098] (Note 3)

[0099] An elevator system is provided in a building where a seismic isolation device is installed on an intermediate floor between the uppermost and lowermost floors, wherein the elevator system has:

[0100] The car moves up and down in a shaft that extends over the first floor, which is above the intermediate floor, and the second floor, which is below the intermediate floor.

[0101] A position detection device that continuously detects the position of the car;

[0102] A control device that controls the movement of the car based on the position of the car detected by the position detection device;

[0103] Earthquake detectors that detect seismic vibrations in the building;

[0104] The anomaly detection unit is unable to detect the position of the car normally by the position detection device, i.e., it cannot detect the position of the car.

[0105] A position correction device, installed within the hoistway, is used to correct the position of the car detected by the position detection device; and

[0106] A position correction detection unit, installed in the car, detects the position correction device.

[0107] The position correction device has:

[0108] A first position correction device is installed at the position detected by the position correction detection unit when the car is at the first floor; and

[0109] The second position correction device is installed at the position detected by the position correction detection unit when the car is located on the third floor, which is one floor below the intermediate floor, or between the third floor and the intermediate floor.

[0110] If the earthquake detector detects an earthquake and the anomaly detection unit detects that the car position cannot be detected, the control device performs the following car position detection to resume operation: raise the car until the position correction detection unit detects either the first position correction device or the second position correction device.

[0111] (Postscript 4)

[0112] According to the elevator system described in Appendix 2 or 3, wherein,

[0113] After the control device detects the resumption of operation at the car position, it performs the following rescue operation: after the car stops at the stopable floor, it opens the door.

[0114] (Note 5)

[0115] According to any one of the appendices 1 to 4, the elevator system wherein,

[0116] The position correction device is a landing plate that specifies the stopping position of the car.

[0117] (Note 6)

[0118] According to any one of the appendices 1 to 5, the elevator system wherein,

[0119] The position detection device has:

[0120] A linear scale, set along the moving path of the car, displays positional information within the hoistway; and

[0121] A reading unit, which is disposed in the car, reads the position information from the linear scale.

[0122] (Note 7)

[0123] According to the elevator system described in Appendix 6, wherein...

[0124] If the reading unit is unable to read the position information from the linear scale, the anomaly detection unit detects that the car position cannot be detected.

[0125] (Postscript 8)

[0126] According to the elevator system described in Appendix 6, wherein...

[0127] The anomaly detection unit detects the undetectable car position based on the matching between the position information read by the reading unit and the detection value of the encoder installed on the traction machine that raises and lowers the car.

[0128] (Note 9)

[0129] According to the elevator system described in Appendix 6, wherein...

[0130] The anomaly detection unit detects the undetectable car position when there is a communication anomaly between the reading unit and the control device.

Claims

1. An elevator system installed in a building where a seismic isolation device is installed on an intermediate floor between the uppermost and lowermost floors, wherein, The elevator system has the following features: The car moves up and down in a shaft that extends over the first floor, which is above the intermediate floor, and the second floor, which is below the intermediate floor. A position detection device that continuously detects the position of the car; A control device that controls the movement of the car based on the position of the car detected by the position detection device; Earthquake detectors that detect seismic vibrations in the building; The anomaly detection unit is unable to detect the position of the car normally by the position detection device, i.e., it cannot detect the position of the car. A position correction device, installed within the hoistway, is used to correct the position of the car detected by the position detection device; and A position correction detection unit, installed in the car, detects the position correction device. The position correction device has: A first position correction device is installed at the position detected by the position correction detection unit when the car is at the second floor; and The second position correction device is installed at the position detected by the position correction detection unit when the car is located on the third floor, one floor above the intermediate floor. If the earthquake detector detects an earthquake and the anomaly detection unit detects that the car position cannot be detected, the control device performs the following rescue operation: lowers the car until the position correction detection unit detects either the first position correction device or the second position correction device, and then opens the door.

2. An elevator system installed in a building where a seismic isolation device is provided on an intermediate floor between the top and bottom floors, wherein, The elevator system has the following features: The car moves up and down in a shaft that extends over the first floor, which is above the intermediate floor, and the second floor, which is below the intermediate floor. A position detection device that continuously detects the position of the car; A control device that controls the movement of the car based on the position of the car detected by the position detection device; Earthquake detectors that detect seismic vibrations in the building; The anomaly detection unit is unable to detect the position of the car normally by the position detection device, i.e., it cannot detect the position of the car. A position correction device, installed within the hoistway, is used to correct the position of the car detected by the position detection device; and A position correction detection unit, installed in the car, detects the position correction device. The position correction device has: A first position correction device is installed at the position detected by the position correction detection unit when the car is at the second floor; and The second position correction device is installed at the position detected by the position correction detection unit when the car is located on the third floor, one floor above the intermediate floor, or between the third floor and the intermediate floor. If the earthquake detector detects an earthquake and the anomaly detection unit detects that the car position cannot be detected, the control device performs the following car position detection to resume operation: lowers the car until the position correction detection unit detects either the first position correction device or the second position correction device.

3. An elevator system installed in a building where a seismic isolation device is provided on an intermediate floor between the uppermost and lowermost floors, wherein... The elevator system has the following features: The car moves up and down in a shaft that extends over the first floor, which is above the intermediate floor, and the second floor, which is below the intermediate floor. A position detection device that continuously detects the position of the car; A control device that controls the movement of the car based on the position of the car detected by the position detection device; Earthquake detectors that detect seismic vibrations in the building; The anomaly detection unit is unable to detect the position of the car normally by the position detection device, i.e., it cannot detect the position of the car. A position correction device, installed within the hoistway, is used to correct the position of the car detected by the position detection device; and A position correction detection unit, installed in the car, detects the position correction device. The position correction device has: A first position correction device is installed at the position detected by the position correction detection unit when the car is at the first floor; and The second position correction device is installed at the position detected by the position correction detection unit when the car is located on the third floor, which is one floor below the intermediate floor, or between the third floor and the intermediate floor. If the earthquake detector detects an earthquake and the anomaly detection unit detects that the car position cannot be detected, the control device performs the following car position detection to resume operation: raise the car until the position correction detection unit detects either the first position correction device or the second position correction device.

4. The elevator system according to claim 2 or 3, wherein, After the control device detects the resumption of operation at the car position, it performs the following rescue operation: after the car stops at the stopable floor, it opens the door.

5. The elevator system according to any one of claims 1 to 3, wherein, The position correction device is a landing plate that specifies the stopping position of the car.

6. The elevator system according to any one of claims 1 to 3, wherein, The position detection device has: A linear scale, set along the moving path of the car, displays positional information within the hoistway; and A reading unit, which is disposed in the car, reads the position information from the linear scale.

7. The elevator system according to claim 6, wherein, If the reading unit is unable to read the position information from the linear scale, the anomaly detection unit detects that the car position cannot be detected.

8. The elevator system according to claim 6, wherein, The anomaly detection unit detects the undetectable car position based on the matching between the position information read by the reading unit and the detection value of the encoder installed on the traction machine that raises and lowers the car.

9. The elevator system according to claim 6, wherein, The anomaly detection unit detects the undetectable car position when there is a communication anomaly between the reading unit and the control device.

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