elevator system

Abstract

To safely stop an elevator without imposing a burden on passengers in the elevator when an abnormality is detected in an absolute positioning system. [Solution] The elevator system includes an absolute positioning system (APS), a detectable object fixedly installed in the hoistway, and a detectable object detection device that detects the detectable object. The system acquires the current position and current speed of the car based on the absolute position detected by the APS, calculates a required travel distance by adding together the distance traveled during a first deceleration operation in which the car decelerates from its current speed to a second moving speed and the distance traveled during a second deceleration operation in which the car decelerates from the second moving speed to a stop, and when an abnormality is detected in the APS, if the required travel distance calculated immediately before the abnormality detection is equal to or less than the remaining distance from the current position to a reference position, executes an evacuation operation in which the first deceleration operation and the second deceleration operation are performed in sequence, and stops the car at the reference position.

Description

[Technical Field]

[0001] The present disclosure relates to an elevator system equipped with an absolute positioning system that detects the absolute position of an elevator car. [Background technology]

[0002] Patent Document 1 discloses a technique related to an elevator system equipped with a position detection device. The position detection device of this technique includes a first position detection unit having a first object to be detected and a first position detector, which is provided at a position corresponding to a floor position, and a second position detection unit that detects an absolute position. If an abnormality occurs in the second position detection unit, the elevator system performs degenerate operation based on the output of the first position detection unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2021 / 002107 Summary of the Invention [Problem to be solved by the invention]

[0004] In the elevator system of Patent Document 1, when moving to the nearest floor during degenerate operation, sudden braking may be necessary depending on the distance to the nearest floor. As such, the elevator system of Patent Document 1 has room for further improvement in safely stopping the elevator without burdening passengers when an abnormality is detected in the absolute positioning system.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide technology that can safely stop an elevator without burdening elevator passengers when an abnormality is detected in the absolute positioning system. [Means for solving the problem]

[0006] The elevator system of the present disclosure includes an absolute position measuring system having a long body whose absolute positions are continuously set corresponding to the position of the car in the moving path direction within the hoistway, and a sensor device attached to the car and acquiring the absolute position of the long body corresponding to the position of the car, a plate-shaped detectable object fixedly installed within the hoistway, a detectable object detection device attached to the car and detecting the detectable object, a storage device that pre-stores absolute positions corresponding to the reference positions of the detectable object in the moving path direction, an acquisition processing unit that acquires the current position and current speed of the car based on the absolute position detected by the absolute position measuring system, and a sensor device that calculates the absolute position of the long body from the current speed. The system is equipped with a calculation unit that calculates a required travel distance by adding together a first travel distance traveled during a first deceleration operation in which the car is decelerated to a second travel speed using a specified first deceleration pattern and a second travel distance traveled during a second deceleration operation in which the car is decelerated from the second travel speed using a specified second deceleration pattern until the car stops, and an evacuation operation execution unit that, when an abnormality in the absolute position positioning system is detected and the required travel distance calculated by the calculation unit immediately before the abnormality is detected is equal to or less than the remaining distance from the current position to a reference position, executes evacuation operation by sequentially performing the first deceleration operation and the second deceleration operation to stop the car at the reference position. [Effects of the Invention]

[0007] According to the technology of the present disclosure, when an abnormality is detected in the absolute positioning system, it is possible to safely stop the elevator without burdening the elevator passengers. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic configuration diagram of an elevator provided in an elevator system according to an embodiment. [Figure 2] FIG. 2 is a diagram for explaining functional blocks included in the control panel. [Figure 3] FIG. 10 is a diagram illustrating an example of a detection range of a plate. [Figure 4]FIG. 2 is a functional block diagram showing functions realized by a processing unit. [Figure 5] FIG. 1 is a diagram for explaining an outline of evacuation operation. [Figure 6] FIG. 10 is a diagram for explaining a determination method by flag determination processing. [Figure 7] FIG. 10 is a diagram for explaining a determination method by flag determination processing. [Figure 8] FIG. 10 is a diagram for explaining a determination method by flag determination processing. [Figure 9] FIG. 10 is a diagram for explaining a determination method by flag determination processing. [Figure 10] 10 is a flowchart showing a routine of a flag determination process executed in a processing unit. [Figure 11] 3 is a flowchart of a routine executed in the elevator system. [Figure 12] FIG. 10 is a diagram illustrating a modified example of hardware resources in a processing unit of a control panel. DETAILED DESCRIPTION OF THE INVENTION

[0009] 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.

[0010] 1. Schematic configuration of an elevator system according to an embodiment Fig. 1 is a schematic diagram of an elevator provided in an elevator system according to an embodiment. The elevator of elevator system 100 according to an embodiment is installed in a facility consisting of a building or the like having multiple floors. An elevator shaft 2 is provided in the facility. The shaft 2 is a vertically long space spanning multiple floors 4.

[0011] The elevator mainly comprises a hoisting machine 3, a motor encoder 5, a speed governor 6, a car 8, and a control panel 10. The car 8 is a device that travels up and down in the hoistway 2, which is the direction of travel, to transport passengers and others inside between multiple floors 4. The car 8 is driven by the hoisting machine 3 installed at the top of the hoistway 2.

[0012] The motor encoder 5 detects the amount of rotation, which is the amount of angle through which the motor of the hoist 3 rotates. Note that the amount of rotation of the motor of the hoist 3 is an amount that correlates with the position and speed of the car 8, and therefore the motor encoder signal corresponding to the amount of rotation of the motor of the hoist 3 can also be used to detect the position and speed of the car 8.

[0013] The governor 6 is a device that outputs a signal synchronized with the vertical movement of the car 8. The governor 6 is installed from the top to the bottom of the elevator shaft 2. The governor 6 includes a governor rope, a governor sheave, and a governor encoder. The governor rope is endless and is wound around the governor sheave. A portion of the governor rope is connected to the car 8. The governor encoder detects the amount of rotation, which is the angle through which the governor sheave rotates. Note that the amount of rotation of the governor sheave is an amount that correlates with the position and speed of the car 8, so the governor encoder signal corresponding to the amount of rotation of the governor sheave can also be used to detect the position and speed of the car 8.

[0014] The control panel 10 controls the operation of the elevator. The elevator operation controlled by the control panel 10 includes, for example, opening and closing of doors, management of registered calls, running of the car 8 to respond to calls, and elevator safety control.

[0015] The elevator is equipped with an absolute positioning system 12. The absolute positioning system will also be referred to as "APS" hereinafter. The APS 12 is a system that functions as an absolute position detection device that detects absolute position information corresponding to the position of the car 8 in the elevator shaft 2 in the direction of the travel path of the car 8. The APS 12 includes an APS tape 14 and an APS sensor 16.

[0016] The APS tape 14 is a long body provided along the travel path direction within the hoistway 2. Typically, absolute position information is continuously set on the APS tape 14 in accordance with the position along the travel path direction within the hoistway 2. The absolute position information is set by continuously varying the magnetic or optical characteristics from the top to the bottom of the APS tape 14 in the vertical direction. The absolute position information read from the APS tape 14 is hereinafter also referred to as "APS data."

[0017] The APS sensor 16 is a sensor for reading APS data from the APS tape 14. The APS sensor 16 is installed on the car 8 in a position facing the APS tape 14. The detection method used for the APS sensor 16 is a method that can read APS data from the APS tape 14, such as a magnetic method or an optical method. The APS data detected by the APS sensor 16 is transmitted to the control panel 10.

[0018] The break detection sensor 24 is a sensor that detects a break in the APS tape 14. There are no limitations on the arrangement or structure of the break detection sensor 24. The break detection sensor 24 detects a break, for example, by detecting strain in the APS tape 14. The detected sensor information is sent to the control panel 10.

[0019] The elevator further includes one or more plates 20 and a plate sensor 22. The plate 20 is a rectangular metal plate fixedly installed in the elevator shaft 2. The plate will also be referred to as the "detection target" hereinafter. The plate 20 is installed in a location corresponding to floor 4, for example, the top floor, the bottom floor, or an evacuation floor.

[0020] The plate sensor 22 is a sensor device that detects the plate 20, and is also called a "detectable object detection device." The plate sensor 22 is attached to the car so as to face the plate 20. The plate sensor 22 detects the entry of an object from the terminal position of the lower end of the plate 20 when the car 8 is ascending. The plate sensor 22 also detects the entry of an object from the terminal position of the upper end of the plate 20 when the car 8 is descending. The detected sensor signal is transmitted to the control panel 10.

[0021] The control panel 10 has a function for performing elevator safety control. Fig. 2 is a diagram for explaining the functional blocks of the control panel. As shown in Fig. 2, the control panel 10 has a processing unit 30, an APS data receiving unit 32, a sensor signal input unit 34, and a storage device 40 as functions related to elevator safety control.

[0022] The processing unit 30 includes a processor 302 and a memory 304. The processor 302 executes various processes. The processor 302 is, for example, a microcomputer. Various data is stored in the memory 304. Examples of the memory 304 include a volatile memory and a non-volatile memory. Various programs are stored in the memory 304. The functions of the processing unit 30 are realized by the processor 302 executing the various programs. The functions of the processing unit 30 will be described later.

[0023] The APS data receiving unit 32 is a functional block for receiving the APS data transmitted from the APS sensor 16. The received APS data is temporarily stored in the memory 304 of the processing unit 30.

[0024] The sensor signal input unit 34 is a functional block for receiving an input of a sensor signal transmitted from the plate sensor 22. The received sensor signal is temporarily stored in the memory 304 of the processing unit 30.

[0025] The memory device 40 is a device that stores pre-learned values ​​as absolute positions corresponding to the reference position xs and the end position Le of one or more plates 20 in the direction of the movement path of the car 8. The reference position xs of the plate 20 is the position of the plate 20 corresponding to the detected position of the plate sensor 22 when the car 8 stops at the landing level of floor 4 of the evacuation floor, for example. Examples of the memory device 40 include a volatile memory and a non-volatile memory. The memory device 40 may be configured as a part of the processing unit 30. For example, the memory device 40 may be the memory 304.

[0026] 3 is a diagram for explaining an example of the detection range of the plate. As shown in this figure, the reference position xs of the plate 20, whose overall length in the vertical direction is 2L, is, for example, the center position between the upper and lower end positions Le of the plate 20. In this case, the effective plate length L used when the car 8 rises and falls is expressed by the following equation:

[0027]

number

[0028] 2. Functions of the processing unit 30 4 is a functional block diagram showing functions realized by the processing unit. As shown in this diagram, the processing unit 30 includes, as functional blocks for executing various processes, an acquisition processing unit 41, a calculation unit 42, a flag determination unit 43, an evacuation operation execution unit 44, and an emergency stop operation execution unit 45. Specific processes in these functional blocks will be described below.

[0029] 2-1. Acquisition processing unit 41 The acquisition processing unit 41 is a functional block for acquiring the current absolute position and moving speed of the car 8 based on the APS data received by the APS data receiving unit 32. This processing is hereinafter referred to as "acquisition processing", and the acquired absolute position and moving speed are respectively referred to as "current position x1" and "current speed V1".

[0030] 2-2. Calculation unit 42 The calculation unit 42 is a functional block for calculating the travel distance traveled during deceleration operation according to a predetermined deceleration pattern. This process will be referred to as the "calculation process" hereinafter. In the calculation process, the calculation unit 42 calculates a first travel distance Xda traveled during a first deceleration operation in which the car 8 is decelerated from the current speed V1 to a second movement speed V2 according to a specified first deceleration pattern. The second movement speed V2 here is a speed that is predetermined as the movement speed during low-speed movement, for example, 20 m / min. The first deceleration pattern is, for example, a pattern with a predetermined uniform deceleration. The first deceleration pattern may be a pattern that further includes a jerk time until the car 8 transitions to the uniform deceleration.

[0031] For example, when the first deceleration pattern is a pattern in which the vehicle decelerates at a constant acceleration A accompanied by a jerk time Tj, the first traveling distance Xda can be calculated using the following equation (2).

[0032]

number

[0033] Furthermore, in the calculation process, the calculation unit 42 calculates a second travel distance Xdc traveled during the second deceleration operation in which the car 8 is decelerated from the second travel speed V2 until it is stopped in accordance with a specified second deceleration pattern. The second deceleration pattern here is a predetermined pattern as a deceleration pattern that starts the second deceleration operation from the time when the plate sensor 22 detects the entry of the plate 20 from the end position Le and enables the car 8 to stop at the reference position xs. The second deceleration pattern may be a deceleration pattern with a uniform deceleration, or may be a pattern that further includes jerk times before and after the deceleration.

[0034] For example, when the second deceleration pattern is a pattern in which the vehicle decelerates at a constant acceleration A with a jerk time Tj, the second traveling distance Xdc can be calculated using the following equation (3).

[0035]

number

[0036] The second traveling distance Xdc corresponds to the effective plate length L of the plate 20. Therefore, in the calculation process, the second traveling distance Xdc may be a fixed value determined by the effective plate length L of the plate 20. Furthermore, the second moving speed V2 can be determined based on the following formula (4).

[0037]

number

[0038] Furthermore, in the calculation process, the calculation unit 42 calculates the required traveling distance Xd, which is the sum of the first traveling distance Xda and the second traveling distance Xdc, according to the following equation (5).

[0039]

number

[0040] 2-3. Flag determination unit 43 The flag determination unit 43 is a functional block that performs processing to determine whether the evacuation operation continuation flag is valid or invalid. This processing will be hereinafter referred to as "flag determination processing." The evacuation operation continuation flag is a flag that indicates whether the operating state of the car 8, such as the position and speed, is in a state in which evacuation operation can be performed.

[0041] Evacuation operation is an operation for safely stopping the car 8 at the floor 4 on which the plate 20 is installed when an abnormality occurs in the APS 12. FIG. 5 is a diagram for explaining an outline of evacuation operation. When evacuation operation is started, a first deceleration operation is first executed, and the car 8 is decelerated from the current speed V1 to a second moving speed V2. Then, when the plate sensor 22 detects that the plate 20 has entered from the end position Le, a second deceleration operation is executed, and the car 8 is stopped at the reference position xs. Note that during the period from when the first deceleration operation is executed to decelerate the car 8 from the current speed V1 to the second moving speed V2 until the plate sensor 22 detects that the plate 20 has entered from the end position Le, constant speed operation at the second moving speed V2 is executed.

[0042] Since evacuation operation is performed when an abnormality occurs in the APS 12, the position of the car 8 during evacuation operation is detected based on the motor encoder signal of the motor encoder 5 or the governor encoder signal of the speed governor 6.

[0043] In the flag determination process, the flag determination unit 43 determines the current state of the evacuation operation continuation flag based on a comparison between the remaining distance to the reference position xs and the required traveling distance Xd. Figures 6 to 9 are diagrams for explaining the determination method by the flag determination process. In the figures, the current position x1 represents the current absolute position of the car 8, the first reference position xs1 represents the reference position of the first detectable object which is the nearest plate 20 in the traveling direction of the car 8, and the first remaining distance xdif1 represents the remaining distance from the current position x1 to the first reference position xs1.

[0044] 6 illustrates a pattern (A) in which the first remaining distance xdif1 is greater than the required travel distance Xd, which is the sum of the first travel distance Xda and the second travel distance Xdc. In this case, evacuation operations can be performed in sequence, including the first deceleration operation, the constant speed operation, and the second deceleration operation, to stop the car 8 at the nearest first reference position xs1.

[0045] 7 illustrates a pattern (B) in which the first remaining distance xdif1 is equal to the required travel distance Xd, which is the sum of the first travel distance Xda and the second travel distance Xdc. In this case, an evacuation operation is performed in which the first deceleration operation and the second deceleration operation are performed in sequence, and the car 8 can be stopped at the nearest first reference position xs1.

[0046] 8 illustrates a pattern (C) in which the first remaining distance xdif1 is smaller than the required travel distance Xd, which is the sum of the first travel distance Xda and the second travel distance Xdc. In this case, even if evacuation operation is performed, the car 8 cannot be stopped at the nearest first reference position xs1.

[0047] Fig. 9 illustrates, as pattern (D), a case where a plurality of plates 20 are placed in the traveling direction of the car 8. In Fig. 9, a second reference position xs2 represents the reference position of a second detectable object, which is the plate 20 next to the first detectable object in the traveling direction of the car 8, and a second remaining distance xdif2 represents the remaining distance from the current position x1 to the second reference position xs2.

[0048] Pattern (D) illustrates a case where the required travel distance Xd, which is the sum of the first travel distance Xda and the second travel distance Xdc, is greater than the first remaining distance xdif1 and less than the second remaining distance xdif2. In this case, evacuation operation cannot be performed to stop the car 8 at the first reference position xs1, but it can be stopped at the second reference position xs2.

[0049] In this way, whether or not evacuation operation can be performed can be determined based on the operating state of the car 8. In the flag determination process, the flag determination unit 43 determines whether the evacuation operation continuation flag is valid or invalid according to the following flowchart based on the above principle.

[0050] 10 is a flowchart showing a routine of flag determination processing executed in the processing unit, which is repeatedly executed at predetermined control intervals.

[0051] In step S100, the acquisition processing unit 41 executes an acquisition process to acquire the current position x1 and the current velocity V1. When the process of step S100 is completed, the process proceeds to step S102.

[0052] In step S102, the calculation unit 42 executes a calculation process to calculate the required traveling distance Xd. When the process of step S102 is completed, the process proceeds to step S104.

[0053] The processes of steps S104, S106, S108, S110, and S112 are part of the flag determination process executed by flag determination unit 43. In step S104, it is determined whether first remaining distance xdif1 is equal to or greater than the required traveling distance Xd calculated in step S102. As a result, if the determination is affirmative, the process proceeds to step S106, and if the determination is negative, the process proceeds to step S108.

[0054] In step S106, the evacuation operation continuation flag is maintained valid. When the processing of step S106 is completed, the processing of this routine is ended.

[0055] In step S108, it is determined whether or not there is a plate 20 in the direction of travel of the car 8. As a result, if the determination is not established, the process proceeds to step S110, where the evacuation operation continuation flag is invalidated. When the process of step S110 is completed, the process of this routine ends.

[0056] On the other hand, if the determination is found to be successful in step S108, the process proceeds to step S112. In step S112, it is determined whether the second remaining distance xdif2 is equal to or greater than the required traveling distance Xd calculated in step S102. As a result, if the determination is found to be successful, the process proceeds to the above-mentioned step S106, and if the determination is found to be unsuccessful, the process proceeds to the above-mentioned step S108.

[0057] 2-4. Evacuation Operation Execution Department 44 The evacuation operation execution unit 44 is a functional block that executes evacuation operation when the following execution conditions for evacuation operation are met. This process will be referred to as "evacuation operation process" hereinafter. Abnormalities in the APS 12 include, for example, a failure of the APS sensor 16, contamination of the APS tape 14, or a communication error that causes the reception of APS data to be interrupted.

[0058] The execution conditions for evacuation operation include, for example, the following conditions. Note that execution condition 3 is not a required execution condition. Execution condition 1: An abnormality occurs in the APS12 while driving. Execution condition 2: The evacuation operation continuation flag is enabled Execution condition 3: APS tape 14 break is not detected

[0059] 2-5. Emergency stop operation execution unit 45 The emergency stop operation execution unit 45 is a functional block for cutting off the power supply to the hoisting machine 3 by cutting off a safety circuit (not shown) and stopping the car when at least one of the following execution conditions for emergency stop operation is met. This processing will be referred to as "emergency stop operation processing" hereinafter. The execution conditions for emergency stop operation include, for example, the following execution conditions, which indicate that a highly urgent abnormality has occurred. Execution condition 1: An abnormality other than APS12 occurs during driving Execution condition 2: A break in APS tape 14 is detected Execution condition 3: If an abnormality occurs in the APS12 while driving, the evacuation operation continuation flag is invalid.

[0060] 3. Specific processing examples by the elevator system of the embodiment Next, a specific example of processing executed in the elevator system will be described with reference to a flowchart. Fig. 11 is a flowchart of a routine executed in the elevator system. The routine shown in Fig. 11 is repeatedly executed at a predetermined control period in the control panel 10 of the elevator system 100 while the elevator is traveling.

[0061] In step S120, it is determined whether or not an abnormality that requires the car 8 to stop traveling has been detected while the car 8 is traveling. If the determination is not successful, the process proceeds to step S122, and the car 8 continues traveling.

[0062] On the other hand, if the determination in step S120 is found to be successful, the process proceeds to step S124. In step S124, it is determined whether or not an abnormality in the APS 12 has been detected. Here, for example, it is determined whether or not the APS data receiving unit 32 has stopped receiving APS data. As a result, if the determination is found to be unsuccessful, the process proceeds to step S126. In step S126, a sudden stop operation process is executed, and the car 8 is brought to a sudden stop.

[0063] On the other hand, if the determination in step S124 is found to be positive, the process proceeds to step S128. In step S128, it is determined whether or not a break in the APS tape 14 has been detected by the break detection sensor 24. If the determination is found to be positive, it is determined that the car 8 should be brought to an emergency stop to prevent secondary damage from the broken APS tape 14, and the process proceeds to step S126 described above.

[0064] On the other hand, if the determination in step S128 is not established, the process proceeds to step S130. In step S130, it is determined whether the evacuation operation continuation flag is valid. As a result, if the determination is not established, it is determined that evacuation operation cannot be performed, and the process proceeds to the above-mentioned step S126.

[0065] On the other hand, if the processing of step S130 is confirmed, it is determined that evacuation operation can be performed, and the processing proceeds to step S132. The processing from step S132 to step S138 corresponds to evacuation operation processing. In step S132, a first deceleration operation is performed. As a result, the car speed of the car 8 is decelerated to a second moving speed V2. When the first deceleration operation is completed in step S132, the processing proceeds to step S134. In step S134, constant speed operation is performed. When the processing of step S134 is performed, the processing proceeds to step S136. In step S136, it is determined whether the plate sensor 22 has detected entry of the plate 20 from the end position Le. As a result, if it is not determined that the determination is successful, the processing returns to step S134, and constant speed operation continues.

[0066] On the other hand, if the determination in step S136 is found to be positive, the processing proceeds to step S138. In step S138, a second deceleration operation is performed, and the car 8 is stopped at the reference position xs. When the processing of step S138 is performed, the processing of this routine is ended.

[0067] As described above, according to the elevator system 100 of this embodiment, when an abnormality is detected in the APS 12, it is possible to safely stop the elevator without imposing a burden on elevator passengers.

[0068] 4. Variations The elevator system 100 according to the embodiment may employ the following modified aspects. These modified aspects may also be applied to elevator systems according to other embodiments described later.

[0069] Fig. 12 is a diagram showing a modified example of the hardware resources in the processing unit 30 of the control panel 10. In the example shown in Fig. 12, the processing unit 30 includes, for example, a processor 302, a memory 304, and a processing circuit 308 including dedicated hardware 306. Fig. 12 shows an example in which some of the functions of the processing unit 30 are realized by the dedicated hardware 306. All of the functions of the processing unit 30 may be realized by the dedicated hardware 306. The dedicated hardware 306 may be a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.

[0070] The storage device 40 may be independent from the control panel 10 and the role thereof may be taken on by a cloud or the like.

[0071] In the elevator system 100, all or part of the functions of the processing unit 30 may be installed in a server at a remote location.

[0072] In the elevator system 100 of the embodiment described above, evacuation operation when the car 8 is descending has been exemplified, but similar control can also be applied to evacuation operation when the car 8 is ascending. In this case, the plate sensor 22 only needs to be configured to detect entry from the terminal position Le of the lower end of the plate 20 when the car 8 is ascending.

[0073] 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.

[0074] Various aspects of the present disclosure are summarized below as appendices.

[0075] (Appendix 1) an absolute position measuring system including a long body whose absolute positions are continuously set corresponding to the position of the car in the movement path direction within the elevator shaft, and a sensor device attached to the car that acquires the absolute position of the long body corresponding to the position of the car; a plate-shaped detection object fixedly installed in the elevator shaft; a detection device for a detectable object attached to the car and detecting the detectable object; a storage device that pre-stores the absolute position corresponding to a reference position of the object to be detected in the direction of the movement path; an acquisition processing unit that acquires a current position and a current speed of the car based on the absolute position detected by the absolute position measurement system; a calculation unit that calculates a required travel distance by adding together a first travel distance traveled during a first deceleration operation in which the car is decelerated from the current speed to a second travel speed in accordance with a specified first deceleration pattern, and a second travel distance traveled during a second deceleration operation in which the car is decelerated from the second travel speed in accordance with a specified second deceleration pattern until the car stops; an evacuation operation execution unit that executes evacuation operations by sequentially performing the first deceleration operation and the second deceleration operation to stop the car at the reference position when the required traveling distance calculated by the calculation unit immediately before the abnormality detection time is equal to or less than the remaining distance from the current position to the reference position at the time of abnormality detection in which an abnormality is detected in the absolute position positioning system; An elevator system comprising: (Appendix 2) the evacuation operation includes a constant speed operation in which the car is moved at a constant speed at the second movement speed, The evacuation operation execution unit executes the constant speed operation between the first deceleration operation and the second deceleration operation so as to stop the car at the reference position. 2. The elevator system of claim 1, configured as follows: (Appendix 3) 3. The elevator system according to claim 1, further comprising an emergency stop operation execution unit that performs an emergency stop operation to suddenly stop the car by cutting off power to a hoisting machine when the required traveling distance is greater than the remaining distance. (Appendix 4) The sudden stop operation execution unit An elevator system as described in Appendix 3, wherein the emergency stop operation is performed when an abnormality in the absolute position measuring system is detected and a break in the elongated body is detected. (Appendix 5) 5. The elevator system according to any one of claims 1 to 4, wherein the detectable object is fixedly installed so that the detection position of the detectable object detection device when the car stops at the landing level of the evacuation floor becomes the reference position. (Appendix 6) a plurality of the detection targets fixedly installed at intervals along the movement path direction in the elevator shaft; The plurality of detectable objects are a first detection object installed ahead of the car in the traveling direction; a second detectable object placed ahead of the first detectable object in the traveling direction, The storage device includes: a first reference position that is the reference position corresponding to the first detection object; a second reference position that is the reference position corresponding to the second detection object; The evacuation operation execution unit When the required traveling distance calculated by the calculation unit is greater than a first remaining distance from the current position to the first reference position, and when the required traveling distance is equal to or less than a second remaining distance from the current position to the second reference position, the evacuation operation is performed to stop the car at the second reference position. 6. The elevator system according to any one of claims 1 to 5, configured as follows: (Appendix 7) the detection object detection device is configured to detect an upper end of the detection object when the car is descending, the detection object is configured so that the distance from the upper end to the reference position is equal to the second travel distance; The evacuation operation execution unit starts the second deceleration operation when the object detection device detects the upper end portion during the descent of the car. 7. The elevator system according to any one of claims 1 to 6, configured as follows: (Appendix 8) the detection object detection device is configured to detect a lower end of the detection object when the car is rising, the detection object is configured so that the distance from the lower end to the reference position is equal to the second travel distance; The evacuation operation execution unit starts the second deceleration operation when the object detection device detects the lower end portion during the ascent of the car. 8. The elevator system according to any one of claims 1 to 7, configured as follows: [Explanation of symbols]

[0076] 2 elevator shaft, 3 hoisting machine, 4 floor, 5 motor encoder, 6 governor, 10 control panel, 12 absolute positioning system (APS), 14 APS tape, 16 APS sensor, 20 plate, 22 plate sensor, 24 breakage detection sensor, 30 processing unit, 32 data receiving unit, 34 sensor signal input unit, 40 storage device, 41 acquisition processing unit, 42 calculation unit, 43 flag determination unit, 44 evacuation operation execution unit, 45 emergency stop operation execution unit, 100 elevator system, 302 processor, 304 memory, 306 dedicated hardware, 308 processing circuit

Claims

1. an absolute position measuring system including: a long body whose absolute positions are continuously set corresponding to the position of the car in the moving path direction within the elevator shaft; and a sensor device attached to the car that acquires the absolute position of the long body corresponding to the position of the car; a plate-shaped detection object fixedly installed in the elevator shaft; a detection device for a detectable object attached to the car and detecting the detectable object; a storage device that pre-stores the absolute position corresponding to a reference position of the object to be detected in the direction of the movement path; an acquisition processing unit that acquires a current position and a current speed of the car based on the absolute position detected by the absolute position measurement system; a calculation unit that calculates a required travel distance by adding together a first travel distance traveled during a first deceleration operation in which the car is decelerated from the current speed to a second travel speed in accordance with a specified first deceleration pattern, and a second travel distance traveled during a second deceleration operation in which the car is decelerated from the second travel speed in accordance with a specified second deceleration pattern until the car stops; an evacuation operation execution unit that executes evacuation operations by sequentially performing the first deceleration operation and the second deceleration operation to stop the car at the reference position when the required traveling distance calculated by the calculation unit immediately before the abnormality detection time is equal to or less than the remaining distance from the current position to the reference position at the time of abnormality detection in which an abnormality is detected in the absolute position positioning system; An elevator system comprising:

2. the evacuation operation includes a constant speed operation in which the car is moved at a constant speed at the second movement speed, The evacuation operation execution unit executes the constant speed operation between the first deceleration operation and the second deceleration operation so as to stop the car at the reference position.

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

3. 3. The elevator system according to claim 1, further comprising an emergency stop operation execution unit that performs an emergency stop operation to suddenly stop the car by cutting off power to a hoisting machine when the required traveling distance is greater than the remaining distance.

4. The sudden stop operation execution unit 4. The elevator system according to claim 3, wherein the emergency stop operation is performed when a break in the long body is detected in the event that an abnormality in the absolute position measuring system is detected.

5. 3. The elevator system according to claim 1, wherein the detectable object is fixedly installed so that the detection position of the detectable object detection device when the car stops at the landing level of the evacuation floor becomes the reference position.

6. a plurality of the detection targets fixedly installed at intervals along the movement path direction in the elevator shaft; The plurality of detectable objects are a first detection object installed ahead of the car in the traveling direction; a second detectable object placed ahead of the first detectable object in the traveling direction, The storage device a first reference position that is the reference position corresponding to the first detection object; a second reference position that is the reference position corresponding to the second detection object; The evacuation operation execution unit When the required traveling distance calculated by the calculation unit is greater than a first remaining distance from the current position to the first reference position, and when the required traveling distance is equal to or less than a second remaining distance from the current position to the second reference position, the evacuation operation is performed to stop the car at the second reference position.

3. The elevator system according to claim 1 or 2, configured as follows:

7. the detection object detection device is configured to detect an upper end of the detection object when the car is descending, the detection object is configured so that the distance from the upper end to the reference position is equal to the second travel distance; The evacuation operation execution unit starts the second deceleration operation when the object detection device detects the upper end portion during the descent of the car.

3. The elevator system according to claim 1 or 2, configured as follows:

8. the detection object detection device is configured to detect a lower end of the detection object when the car is rising, the detection object is configured so that the distance from the lower end to the reference position is equal to the second travel distance; The evacuation operation execution unit starts the second deceleration operation when the object detection device detects the lower end portion during the ascent of the car.

3. The elevator system according to claim 1 or 2, configured as follows:

Images