Elevator control device and elevator control method

Abstract

To move a car at a speed below which it can travel safely even when the car's travel speed is unknown. [Solution] The elevator control device includes a control unit (110) that controls a hoist that raises and lowers a car in an elevator shaft, and a memory unit (120) that stores the time it takes for the car to reach a predetermined set speed from a stopped state by controlling the motor of the hoist with a predetermined torque, and the control unit (110) has a temporary control unit (111) that temporarily controls the motor at a torque equal to or less than the predetermined torque only within the time it takes for the car to reach a predetermined set speed when the car stops between floors.

Description

[Technical Field]

[0001] The present disclosure relates to an elevator control device that performs emergency control and an elevator control method. [Background technology]

[0002] Patent Document 1 discloses an elevator facility in which a measuring tape installed inside the elevator shaft for determining the position of the car is detected by a sensor device attached to the car. By detecting the measuring tape, the sensor device can determine the position of the car and calculate its running speed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-230936 Summary of the Invention [Problem to be solved by the invention]

[0004] In the elevator equipment described in Patent Document 1, if an abnormality is found, it is necessary to bring the car to an emergency stop. In particular, if an abnormality occurs that makes the car's traveling speed unknown due to a sensor device failure or the like, when an attempt is made to move the car from the stopping point, the car may travel at a speed that exceeds the car's safe traveling speed.

[0005] Therefore, an object of the present disclosure is to move the car at a speed below which it can travel safely even when the traveling speed of the car is unknown. [Means for solving the problem]

[0006] The elevator control device according to the present disclosure includes a control unit that controls a hoist that raises and lowers an elevator car in an elevator shaft, and a control unit that controls a motor of the hoist at a predetermined torque to raise and lower the car from a stopped state. This is the speed at which the car can move safely in the event of an abnormality.The car is provided with a memory unit that stores the time required to reach a predetermined set speed, and the control unit has a temporary control unit that temporarily controls the motor at a torque equal to or less than a predetermined value for only the time required to reach the set speed if the car stops between floors. [Effects of the Invention]

[0007] According to the present disclosure, even if the traveling speed of the car becomes unknown, the car can be moved at a speed equal to or lower than a set speed at which it can travel safely. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a functional configuration diagram of an elevator control device according to a first embodiment. [Figure 2] FIG. 1 is a configuration diagram of an elevator according to a first embodiment. [Figure 3] FIG. 2 is a hardware configuration diagram of a control panel according to the first embodiment. [Figure 4] 4 is a flowchart showing an example of processing performed by the control panel according to the first embodiment. [Figure 5] 10 is a diagram showing the relationship between the running speed and running time of the car when the motor according to the first embodiment rotates at a torque equal to or less than a predetermined torque. FIG. [Figure 6] 3 is a diagram showing an example of processing performed by the control panel according to the first embodiment and changes in the running speed of the car. FIG. [Figure 7] 10 is a flowchart illustrating an example of a process in which a measurement control unit and a measurement unit set a reaching time. [Figure 8] 10 is a diagram showing the relationship between the running speed and running time of the car when the motor according to the first embodiment rotates at a torque equal to or less than a predetermined torque. FIG. [Figure 9] 10 is a diagram showing the relationship between the running speed and running time of the car when the motor according to the first embodiment rotates at a torque equal to or less than a predetermined torque. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] In the embodiments and drawings, the same or corresponding elements are denoted by the same reference numerals. The description of elements denoted by the same reference numerals as those already described will be omitted or simplified as appropriate. Arrows in the drawings primarily indicate the flow of data or the flow of processing.

[0010] In the embodiment, the car landing means that the car stops at a position on any of a plurality of floors where the car door can be opened.

[0011] Embodiment 1 An elevator according to a first embodiment to which an elevator control device of the present invention is applied will be described with reference to Figs. 1 to 9.

[0012] ***Configuration Description*** <<Elevator Control Device 1000>> FIG. 1 is a functional configuration diagram of an elevator control device 1000 according to this embodiment. The elevator control device 1000 includes a control unit 110 and a storage unit 120. In this embodiment, the elevator control device 1000 further includes a code tape 40, a car position reading device 50, an abnormality detection unit 130, a door opening determination unit 140, and a measurement unit 150.

[0013] <<Elevator 1>> FIG. 2 is a configuration diagram of the elevator 1 according to the first embodiment to which the elevator control device 1000 of the present invention is applied. As shown in FIG. 2, the elevator 1 is provided in a machine room 5 and a hoistway 10 . The elevator 1 is provided with a car 20, a code tape 40, and a car position reading device 50 in a hoistway 10. The elevator 1 is provided with a hoisting machine 30 and a control panel 100 having a control unit 110 and a memory unit 120 in a machine room 5. The elevator 1 also includes a guide rail 11, an upper support portion 12, a spring support portion 13, a spring 14, a lower support portion 15, a landing position detection device 60, a landing position code 61, a landing door 70, a main rope 80, a deflector wheel 81, and a counterweight 82.

[0014] The building in which the elevator 1 is installed is provided with an elevator shaft 10 through which the car 20 of the elevator 1 moves up and down. The elevator shaft 10 is a vertically long space that spans multiple floors. Each of the multiple floors has a landing. A landing door 70 is installed at each landing. Hereinafter, the vertically upward direction will be referred to as "upper" and the vertically downward direction will be referred to as "lower."

[0015] A landing position code 61 is installed above the landing door 70 in the elevator shaft 10. The landing position code 61 is a plate on which information indicating the landing position of the car 20 on each floor is given.

[0016] A guide rail 11 is provided in the elevator shaft 10 along the traveling direction of the car 20. An upper support portion 12 is provided on the upper portion of the guide rail 11, and a lower support portion 15 is provided on the lower portion of the guide rail 11. The upper support portion 12 and the lower support portion 15 are members for holding the cord tape 40 .

[0017] The cord tape 40 is arranged in the hoistway 10 along the direction of travel of the car 20. The upper end of cord tape 40 is fixed to upper support portion 12, and the lower end of cord tape 40 is fixed to spring support portion 13. Spring 14 is provided between spring support portion 13 and lower support portion 15, so that cord tape 40 is suspended within hoistway 10 while tension is applied by spring 14. The code tape 40 is provided with position information within the hoistway 10 . The code tape 40 is, for example, a magnetic code tape 40, and has a code attached thereto for identifying the position of the car 20.

[0018] The car 20 runs vertically along the guide rails 11 within the elevator shaft 10, driven by a hoisting machine 30 which operates in response to commands from a control panel 100 (described later). Passengers and vehicles get on and off, and baggage is carried into the car 20 through hall doors 70 installed on each of the multiple floors.

[0019] A car position reading device 50 and a landing position detecting device 60 are attached to the car 20 via a connection part 55 . The car position reading device 50 reads the position information from the code tape 40 and transmits the read position information to the control unit 110 of the control panel 100. This enables the control unit 110 to grasp the position within the hoistway 10 and to grasp the speed of the car 20 from the rate of change per unit time. The landing position detection device 60 detects the landing position code 61, and when detected, transmits a landing position detection signal to the door opening determination unit 140 of the control unit 110, which will be described later. This enables the control unit 110 to grasp the stopping position of the car 20.

[0020] The car 20 and counterweight 82 are suspended within the hoistway 10 by the main ropes 80 . One end of the main rope 80 is connected to the upper end of the car 20 . The main rope 80 is wound around the hoist 30 and the deflector pulley 81. A counterweight 82 is connected to the other end of the main rope 80 .

[0021] A machine room 5 is provided above the elevator shaft 10. The hoisting machine 30 provided in the machine room 5 has a motor 31 . When the motor 31 of the hoist 30 rotates, the car 20 connected to the main rope 80 and the counterweight 82 are raised and lowered. The hoisting machine 30 is controlled by the control unit 110 of the control panel 100. When the hoisting machine 30 stops the car 20, it transmits a stop state signal 205 to the control unit 110.

[0022] As shown in FIG. 1, the control panel 100 includes a control unit 110 and a storage unit 120. The control panel 100 also includes an abnormality detection unit 130, a door opening determination unit 140, and a measurement unit 150.

[0023] <<Storage section 120>> The storage unit 120 stores a set speed 121 , a predetermined torque 122 , a temporary control torque 122 a , and a reaching time 123 .

[0024] The set speed 121 is a set value for the running speed of the car 20. The set speed 121 is stored in advance in the storage unit 120 . In this embodiment, the set speed 121 is the upper limit speed when the car 20 is moved safely to the landing door 70 in the event of an abnormality, and therefore it is desirable to set it to a speed slower than the running speed of the car 20 under normal circumstances.

[0025] The predetermined torque 122 is a command value of the torque to be generated by the motor 31 when performing measurement control, which will be described later. The predetermined torque 122 is stored in advance in the storage unit 120 . In this embodiment, the maximum torque of the motor 31 is set as the predetermined torque 122 .

[0026] The temporary control torque 122a is a command value of the torque to be generated by the motor 31 when performing temporary control, which will be described later. The temporary control torque 122a is stored in advance in the storage unit 120. The temporary control torque 122 a is equal to or less than the predetermined torque 122 .

[0027] The arrival time 123 is the time required for the car 20 to reach a predetermined set speed 121 from a stopped state under control of the motor 31 at a predetermined torque 122 . The arrival time 123 may be set in advance by the manager or manufacturer of the elevator 1, or may be set automatically by the measurement control unit 115 and the measurement unit 150, which will be described later.

[0028] <<Abnormality Detection Unit 130>> The abnormality detection unit 130 detects abnormalities in the elevator 1. An abnormality in the elevator 1 is the occurrence of an event that affects the function of the elevator 1, such as an earthquake, flooding, or power outage, or a failure or malfunction of a device provided in the elevator 1. The abnormality detection unit 130 detects an abnormality by receiving a signal informing of an abnormality or by comparing the output value of a device provided in the elevator 1 with that during normal times.

[0029] In this embodiment, an abnormality in the car position reading device 50 is detected by the abnormality detection unit 130 . The abnormality detection unit 130 detects an abnormality in the car position reading device 50 when it receives an abnormality signal 203 from the car position reading device 50, when it finds an abnormality in the position information 201 read by the car position reading device 50, or when it is unable to obtain the position information 201 from the car position reading device 50 for a predetermined period of time. When the abnormality detection unit 130 detects an abnormality, it outputs a stop signal 204 to the stop control unit 112, which will be described later. When the abnormality detection unit 130 detects an abnormality, it outputs a signal informing the measurement control unit 115, which will be described later.

[0030] <<Door Open Determination Unit 140>> The door opening determination unit 140 determines whether or not the car 20 has landed on the floor and is in a door opening position where the door can be opened. The door open determination unit 140 receives the landing position detection signal 202 from the landing position detection device 60 and determines that the car 20 is located at a door open position where the hall door 70 is located. The door open determination unit 140 transmits a determination result 206 as to whether or not the car 20 is in the door open position to the temporary control unit 111 and the stop control unit 112, which will be described later.

[0031] <<Control Unit 110>> The control unit 110 controls the hoisting machine 30. The control unit 110 includes a temporary control unit 111 , a stop control unit 112 , a speed calculation unit 113 , a normal control unit 114 , and a measurement control unit 115 .

[0032] The temporary control unit 111 performs temporary control when the car 20 stops between floors. The temporary control means controlling the motor 31 with a temporary control torque 122a that is equal to or less than the predetermined torque 122 only within the arrival time 123. The temporary control unit 111 controls with a constant torque. Also, performing control only within the arrival time 123 means performing control for a time period up to the arrival time 123. The case where the car 20 stops between floors is when the stop control unit 112 described later stops the car 20 and the door opening determination unit 140 determines that the position of the car 20 is not in the door open position.

[0033] Upon receiving the stop state signal 205 from the hoist 30, the temporary control unit 111 determines that the stop control unit 112 has stopped the car 20. The temporary control unit 111 acquires from the door open determination unit 140 a determination result 206 as to whether or not the position of the car 20 is the door open position. The temporary control unit 111 transmits a temporary control signal 207 to the hoisting machine 30 to command temporary control. While performing temporary control, temporary control unit 111 transmits temporary control signal 207 to stop control unit 112. That is, temporary control signal 207 is transmitted continuously within arrival time 123.

[0034] The stop control unit 112 stops the car 20 when the abnormality detection unit 130 detects an abnormality. In other words, when the stop control unit 112 receives the stop signal 204 from the abnormality detection unit 130 , it transmits a stop control signal 208 to the hoisting machine 30 to stop the car 20 .

[0035] In addition, if the door opening determination unit 140 does not determine that the car 20 is in the door open position while the temporary control unit 111 is performing temporary control, the stop control unit 112 stops the car 20 after the temporary control by the temporary control unit 111. In other words, if the stop control unit 112 cannot obtain from the door opening determination unit 140 a determination result 206 that the car 20 is in the door open position while receiving the temporary control signal 207 from the temporary control unit 111, it transmits a stop control signal 208 to the hoisting machine 30 at the time when reception of the temporary control signal 207 is interrupted.

[0036] Furthermore, while the temporary control unit 111 is performing temporary control, the stop control unit 112 stops the car 20 and opens the landing door 70 at the timing when the door opening determination unit 140 determines that the car 20 is in the door open position. In other words, when the stop control unit 112 acquires the determination result 206 that the car 20 is in the door open position from the door open determination unit 140 while receiving the temporary control signal 207 from the temporary control unit 111, the stop control unit 112 transmits a stop control signal 208 to the hoist 30. Furthermore, when the stop control unit 112 receives a stop state signal 205 from the hoist 30, it opens the landing door 70.

[0037] Furthermore, when the stop control unit 112 receives a stop signal 204 from the measurement control unit 115 described later, it transmits a stop control signal 208 to the hoisting machine 30 to stop the car 20 .

[0038] The speed calculation unit 113 acquires the position information 201 from the car position reading device 50 . The speed calculation unit 113 calculates the traveling speed of the car 20 by time differentiation based on the acquired position information 201. The speed calculation unit 113 transmits the calculated traveling speed as a speed signal 209 to the normal control unit 114 and the measurement unit 150 .

[0039] The normal control unit 114 receives the speed signal 209 from the speed calculation unit 113 . The normal control section 114 controls the hoisting machine 30 in normal operation based on the received speed signal 209. Here, normal times refer to times when the abnormality detection unit 130 has not detected an abnormality, or when measurement control, which will be described later, is not being performed. Control of the hoist 30 during normal operation includes, for example, raising, lowering, and stopping the car 20 in response to hall calls or car calls from passengers.

[0040] The measurement control unit 115 outputs a stop signal 204 to the stop control unit 112 . The measurement control unit 115 receives a stop state signal 205 from the hoisting machine 30. The measurement control unit 115 controls the motor 31 with a constant predetermined torque 122 from the stopped state of the car 20. This control is called measurement control. The measurement control unit 115 performs measurement control by transmitting a measurement control signal 210 to the hoisting machine 30. The measurement control unit 115 also transmits the measurement control signal 210 to the measurement unit 150.

[0041] The measurement control unit 115 operates when an elevator 1 manager or maintenance worker operates it to perform measurement control. Furthermore, the measurement control unit 115 may operate automatically when the abnormality detection unit 130 does not detect an abnormality, that is, when a signal notifying an abnormality is not received from the abnormality detection unit 130. In addition, when the measurement control unit 115 operates automatically, it is desirable that the operation be performed when there are no passengers on board the car 20. Whether there are passengers on board the car 20 can be determined by obtaining information from the normal time control unit 114.

[0042] <<Measurement unit 150>> When the measurement control unit 115 performs control, the measurement unit 150 measures the time it takes for the car 20 to reach the set speed 121 from a stopped state, and stores this in the storage unit 120 as the arrival time 123 . More specifically, the measurement unit 150 receives a measurement control signal 210 from the measurement control unit 115. The measurement unit 150 also receives a speed signal 209 from the speed calculation unit 113. The measurement unit 150 measures the time when the measurement control signal 210 is received and the time when the car 20 reaches the set speed 121, thereby obtaining the time it takes for the car 20 to reach the set speed 121 from a stopped state. The time when the car 20 reaches the set speed 121 is the time when the speed signal 209 indicating the set speed 121 is received from the speed calculation unit 113.

[0043] The hardware configuration of the control panel 100 of the elevator 1 to which the elevator control device 1000 of the present invention is applied will be described with reference to FIG. Each component of the control panel 100 is made up of a computer having a processor 501, a memory 502, and a signal input / output unit 503. Each function of the control panel 100 is realized by this computer. That is, a program for realizing each function of the control panel 100 is stored in the memory 502 of the computer. The information stored in the storage unit 120 is stored in the memory 502 . The processor 501 executes calculations for controlling the movement of the control panel 100 based on a program stored in the memory 502 .

[0044] ***Explanation of Operation*** Hereinafter, the operation of the elevator 1 in the first embodiment to which the elevator control device 1000 of the present invention is applied will be described. An example of processing performed by the control panel 100 will be described with reference to the flowchart shown in FIG.

[0045] <<Step S101>> In step S101, the storage unit 120 stores the arrival time 123. The arrival time 123 may be set in advance by the manager or manufacturer of the elevator 1, or may be set automatically by the measurement control unit 115 and the measurement unit 150. The operation of the measurement control unit 115 and the measurement unit 150 to set the arrival time 123 will be described later. Once the arrival time 123 is set, it does not need to be set again.

[0046] <<Step S102>> In step S102, the abnormality detection unit 130 detects an abnormality. If the abnormality detection unit 130 does not detect an abnormality, the process proceeds to step S103. If the abnormality detection unit 130 detects an abnormality, it outputs a stop signal 204 to the stop control unit 112, and the process proceeds to step S104.

[0047] <<Step S103>> In step S103, the normal control section 114 starts the normal control of the hoisting machine 30. After step S103, the process returns to step S102.

[0048] <<Step S104>> In step S104, the stop control unit 112 stops the car 20. When the process in step S104 is the first time, upon receiving the stop signal 204 from the abnormality detection unit 130, the stop control unit 112 transmits a stop control signal 208 to the hoisting machine 30 to stop the car 20. When the processing in step S104 is the second or subsequent time, if the stop control unit 112 cannot obtain a judgment result 206 from the door opening judgment unit 140 that the car 20 is in the door open position while receiving the temporary control signal 207 from the temporary control unit 111, the stop control unit 112 transmits a stop control signal 208 to the hoisting machine 30 at the time when reception of the temporary control signal 207 is interrupted. When the hoist 30 receives the stop control signal 208, it stops the rotation of the motor 31 and activates a brake (not shown) of the hoist 30, thereby stopping the car 20. When the hoisting machine 30 stops the car 20, it transmits a stop state signal 205 to the control unit 110. After step S104, the process proceeds to step S105.

[0049] <<Step S105>> In step S105, the door open determination unit 140 determines whether the car 20 is in the door open position. More specifically, the door-open determination unit 140 determines that the car 20 is in the door-open position when it receives the landing position detection signal 202 from the landing position detection device 60. Then, in order to open the hall door 70, it transmits a determination result 206 to the stop control unit 112, and the process proceeds to step S109. Furthermore, the door-open determination unit 140 determines that the car 20 is not in the door-open position when it has not received the landing position detection signal 202 from the landing position detection device 60. Then, it transmits a determination result 206 to the temporary control unit 111, and proceeds to step S106.

[0050] <<Step S106>> In step S106, the car 20 starts running with a temporary control torque 122a that is equal to or less than the predetermined torque 122. More specifically, when the temporary control unit 111 receives a stop state signal 205 from the hoist 30 and obtains a judgment result 206 from the door opening judgment unit 140 indicating that the position of the car 20 is not in the door open position, the temporary control unit 111 transmits a temporary control signal 207 to the hoist 30 and performs temporary control. While performing temporary control, temporary control unit 111 transmits a temporary control signal 207 to stop control unit 112.

[0051] When the hoist 30 receives the temporary control signal 207 from the temporary control unit 111, the motor 31 of the hoist 30 rotates at a temporary control torque 122a that is equal to or less than the predetermined torque 122 only within the arrival time 123. The traveling speed of the car 20 when the hoisting machine 30 is temporarily controlled will be described with reference to FIG. FIG. 5 is a diagram showing the relationship between the running speed and running time of the car 20 when the motor 31 rotates at a constant temporary control torque 122a. The vertical axis of FIG. 5 indicates the running speed of the car 20, and the horizontal axis indicates the running time of the car 20. 5 indicates the case where the temporary control torque 122a is set to the predetermined torque 122. The line 2 indicates the case where the temporary control torque 122a is set to less than the predetermined torque 122. As shown by lines 1 and 2, if the motor 31 is rotated with a temporary control torque 122a that is less than the predetermined torque 122 and the running time is kept within the arrival time 123, the running speed of the car 20 can be kept below the set speed 121. As shown in FIG. 4, after step S106, the process proceeds to step S107.

[0052] <<Step S107>> In step S107, while the hoisting machine 30 is being temporarily controlled, that is, within the arrival time 123, the door-open determining unit 140 determines whether the car 20 is in the door-open position. If the door open determination unit 140 determines that the car 20 is not in the door open position, the temporary control unit 111 returns to the processing of step S104 to perform temporary control again. The processing returns to step S104 when the arrival time 123 has elapsed since the processing of step S106 started. If the door open determination unit 140 determines that the car 20 is in the door open position, the process proceeds to step S108.

[0053] <<Step S108>> In step S108, while the stop control unit 112 is receiving the temporary control signal 207 from the temporary control unit 111, that is, if the stop control unit 112 obtains a judgment result 206 from the door opening judgment unit 140 that the car 20 is in the door open position within the arrival time 123, it transmits a stop control signal 208 to the hoist 30. When the hoist 30 receives the stop control signal 208, it stops the rotation of the motor 31 and activates a brake (not shown) of the hoist 30, thereby stopping the car 20. After step S108, the process proceeds to step S109.

[0054] <<Step S109>> In step S109, the stop control unit 112 opens the landing door 70. More specifically, when the stop control unit 112 acquires a determination result 206 that the car 20 is in the door open position from the door open determination unit 140 and receives a stop state signal 205 from the hoist 30, the stop control unit 112 opens the landing door 70. The process ends in step S109.

[0055] FIG. 6 is a diagram showing an example of the processing performed by the control panel 100 described above and changes in the running speed of the car 20. 6, the vertical axis represents the traveling speed of the car 20, and the horizontal axis represents the processing time of the processing performed by the control panel 100. An example of temporary control by temporary control unit 111 will be described with reference to FIG.

[0056] For example, if an abnormality is found while the car 20 is traveling, the stop control unit 112 stops the car 20 (step S104). Then, when the door-open determination unit 140 determines that the car 20 is not in the door-open position (step S105), the temporary control unit 111 performs temporary control with a constant temporary control torque 122a that is equal to or less than the predetermined torque 122 (step S106). In the temporary control at this time, the temporary control torque 122a is set to the predetermined torque 122, as in the case of the line 1 shown in FIG. During the arrival time during which the temporary control is being performed, the door open determination unit 140 determines whether the car 20 is in the door open position (step S107). If the car 20 is not in the door open position, the stop control unit 112 stops the car 20 (step S104). Then, the door-opening determination unit 140 determines that the car 20 is not in the door-opening position (step S105), and the temporary control unit 111 performs temporary control again with a constant temporary control torque 122a (step S106). During the temporary control, the door-opening determination unit 140 determines whether the car 20 is in the door-opening position (step S107), and if it is in the door-opening position, the stop control unit 112 stops the car 20 (step S108) and opens the landing door 70 (step S109).

[0057] An example of the process performed in step S101 of FIG. 4 in which the measurement control unit 115 and the measurement unit 150 set the arrival time 123 will be described with reference to the flowchart shown in FIG. This process is performed automatically when the manager or maintenance personnel of the elevator 1 operates to perform measurement control, or when the abnormality detection unit 130 does not detect any abnormality.

[0058] <<Step S101a>> In step S101a, the abnormality detection unit 130 detects an abnormality. If the abnormality detection unit 130 detects an abnormality, the process ends. If the abnormality detection unit 130 does not detect an abnormality, that is, if the measurement control unit 115 does not receive a signal notifying of an abnormality from the abnormality detection unit 130, the measurement control unit 115 outputs a stop signal 204 to the stop control unit 112.

[0059] <<Step S101b>> In step S101b, the stop control unit 112 stops the car 20. More specifically, when the stop control unit 112 receives the stop signal 204 from the measurement control unit 115 , it transmits a stop control signal 208 to the hoisting machine 30 to stop the car 20 . After step S101b, the process proceeds to step S101c.

[0060] <<Step S101c>> In step S101c, the measurement control unit 115 performs measurement control. More specifically, the measurement control unit 115 transmits a measurement control signal 210 to the hoisting machine 30, and performs measurement control to control the motor 31 with a constant predetermined torque 122 from the stopped state of the car 20. Furthermore, the measurement control unit 115 transmits a measurement control signal 210 to the measurement unit 150 at the timing when measurement control starts. After step S101c, the process proceeds to step S101d.

[0061] <<Step S101d>> In step S101d, the measurement unit 150 measures the arrival time 123. More specifically, first, the measurement control signal 210 is received from the measurement control unit 115 . Furthermore, the measurement control unit 115 receives a velocity signal 209 from the velocity calculation unit 113 . The measurement unit 150 measures the time it takes for the car 20 to reach the set speed 121 from a stopped state, i.e., the arrival time 123, from the time when the measurement control signal 210 is received and the time when the speed signal 209 indicating the set speed 121 is received. After step S101d, the process proceeds to step S101e.

[0062] <<Step S101e>> In step S101e, the measurement control unit 115 stores the measured arrival time 123 in the storage unit 120. The storage unit 120 stores the arrival time 123 . The process ends in step S101e.

[0063] By the processing of the control panel 100 explained using Figures 4 and 7, the car 20 stores the arrival time 123 required for the car 20 to reach a predetermined set speed 121 from a stopped state by controlling the motor 31 at a predetermined torque 122, and if the car 20 stops between floors, temporary control can be performed to control the motor 31 at a torque equal to or less than the predetermined torque 122 only within the arrival time 123.

[0064] ***Summary of the first embodiment*** The elevator 1 of embodiment 1 is equipped with a car 20 (also called a passenger car) that operates within the elevator shaft 10, a code tape 40 that has position information within the elevator shaft 10, a floor landing position detection device 60 that is provided for each floor within the elevator shaft 10 and reads the floor landing position information of the car 20 on the floor, and a control panel 100 that controls the operation of the car 20 based on the position information obtained from the code tape 40.The elevator 1 of embodiment 1 is characterized in that, for example, when there is an abnormality in the position information, it moves to the floor landing position by running for a predetermined time (which is the arrival time 123) at a time, and safely rescues passengers. Also, the time from when the motor 31 starts to be started at maximum output until the car 20 reaches the set speed 121 (for example, rescue speed) is recorded and is used as the travelable time when the position information is abnormal or the like.

[0065] ***Effects of the First Embodiment*** As described above, when car 20 stops between floors, elevator control device 1000 of embodiment 1 temporarily controls motor 31 at or below predetermined torque 122 only within arrival time 123. Therefore, even if the running speed of car 20 becomes unknown, it is possible to prevent car 20 from reaching a speed faster than set speed 121 and move car 20 at or below set speed 121 at which it can run safely.

[0066] Furthermore, if the door opening determination unit 140 determines that the car 20 is in the door open position while the temporary control unit 111 is performing temporary control, the car 20 is stopped. Therefore, even if the running speed of the car 20 is unknown, the car 20 can move to the door open position at a speed equal to or less than the set speed 121, enabling rescue operation to rescue passengers.

[0067] Furthermore, since the maximum torque of the motor 31 is set as the specified torque 122, even if there is an abnormality in the motor 31 and the motor 31 cannot be controlled with the specified temporary control torque 122a, the car 20 can be moved safely at a speed equal to or less than the set speed 121.

[0068] If the temporary control torque 122a is set to the maximum torque of the motor 31, the car 20 can be moved to the door-open position at the highest speed while maintaining the set speed 121 or less.

[0069] Furthermore, the measurement control unit 115 and the measurement unit 150 set the arrival time 123, so that the arrival time 123 can be set to suit each elevator.

[0070] ***Modification of the First Embodiment*** <<Variation 1>> In the present embodiment, the storage unit 120 stores one value of the arrival time 123, but the present invention is not limited to this. The storage unit 120 may store arrival times 123 of a plurality of values, and the temporary control unit 111 may perform temporary control by selectively using the plurality of arrival times 123 depending on the situation.

[0071] For example, the storage unit 120 may store the arrival time 123 set in advance by the manager or manufacturer of the elevator 1, and may also store the arrival time 123 measured by the measurement unit 150. The temporary control unit 111 performs temporary control based on the arrival time 123 measured by the measurement unit 150 as a priority, and when there is an abnormality in the processing of the speed calculation unit 113, the measurement control unit 115, or the measurement unit 150, it may perform temporary control based on the arrival time 123 set in advance by the manager or manufacturer of the elevator 1.

[0072] <<Variation 2>> In the present embodiment, the maximum torque of the motor 31 is set as the predetermined torque 122, but the present invention is not limited to this. The predetermined torque 122 may be set lower than the maximum torque. If the predetermined torque 122 is set lower than the maximum torque, the acceleration of the car 20 during emergency control can be made gentle.

[0073] <<Variation 3>> Furthermore, although the memory unit 120 stores one value of the predetermined torque 122, the present invention is not limited to this. The memory unit 120 stores a plurality of values ​​of predetermined torque 122 and a plurality of arrival times 123 corresponding to the plurality of values ​​of predetermined torque 122, and the temporary control unit 111 may perform temporary control by selectively using the plurality of predetermined torques 122 and the plurality of arrival times 123 depending on the situation.

[0074] For example, the storage unit 120 stores a torque used in controlling the hoist 30 under normal circumstances and a maximum torque as the predetermined torque 122. The storage unit 120 also stores a reach time 123 corresponding to the torque used in controlling the hoist 30 under normal circumstances and a reach time 123 corresponding to the maximum torque. The temporary control unit 111 may preferentially perform temporary control based on the torque used to control the hoisting machine 30 under normal circumstances, and if there is an abnormality in the motor 31 and it becomes impossible to control the motor 31 at the specified torque, it may assume that the motor 31 is being controlled at the maximum torque and perform temporary control based on the arrival time 123 corresponding to the maximum torque.

[0075] <<Variation 4>> In the present embodiment, temporary control unit 111 performs control with a constant temporary control torque 122a that is equal to or less than predetermined torque 122, but the present invention is not limited to this. Temporary control unit 111 may control with a non-constant torque as long as the torque is equal to or less than predetermined torque 122 . 8 and 9 are diagrams showing the relationship between the running speed and running time of the car 20 when the motor 31 is controlled with a non-constant temporary control torque 122a. As shown by curve 1 in Fig. 8, the temporary control unit 111 may control the torque so that the running speed increases exponentially as long as it is equal to or less than a predetermined torque 122. In this case, unless the running time of the car 20 exceeds the arrival time 123, the running speed of the car 20 will not exceed the set speed 121. 9, the temporary control unit 111 may control the torque so that the running speed increases in a stepped manner as long as the torque is equal to or less than a predetermined torque 122. In this case, unless the running time of the car 20 exceeds the arrival time 123, the running speed of the car 20 will not exceed the set speed 121.

[0076] <<Variation 5>> In this embodiment, the measurement unit 150 measures the arrival time 123 by measuring the time it takes for the car 20 to reach the set speed 121 from a stopped state based on the time when the measurement control signal 210 is received and the time when the speed signal 209 indicating the set speed 121 is received, but this is not limited to this. The measurement unit 150 may receive a signal from the hoist 30 when the motor 31 starts moving due to measurement control, and measure the arrival time 123 from the time of reception and the time when the speed signal 209 indicating the set speed 121 is received.

[0077] <<Variation 6>> In the present embodiment, the abnormality detection unit 130 detects an abnormality in the car position reading device 50, and the temporary control unit 111 performs temporary control, but the present invention is not limited to this.

[0078] The abnormality detection unit 130 may be configured to detect an abnormality in the elevator 1 other than an abnormality in the car position reading device 50, and the temporary control unit 111 may perform temporary control. For example, when the abnormality detection unit 130 detects an occurrence of an event affecting the function of the elevator 1, such as an earthquake, flooding, or power outage, or a failure or malfunction of a device equipped in the elevator 1, as an abnormality in the elevator 1, it outputs a stop signal 204 to the stop control unit 112 to stop the car 20. Then, when the temporary control unit 111 receives a stop state signal 205 from the hoisting machine 30 and obtains a determination result 206 from the door opening determination unit 140 that the position of the car 20 is not in the door open position, it transmits a temporary control signal 207 to the hoisting machine 30 and performs temporary control.

[0079] Furthermore, even if the abnormality detection unit 130 does not detect an abnormality in the elevator 1, the temporary control unit 111 may be configured to perform temporary control. In the elevator control device 1000, even if the abnormality detection unit 130 does not detect an abnormality in the elevator 1, the temporary control unit 111 may perform temporary control if it receives a stop state signal 205 from the hoist 30 and obtains a judgment result 206 from the door opening judgment unit 140 that the position of the car 20 is not in the door open position. That is, the temporary control unit 111 may perform temporary control when the car stops between floors.

[0080] Various aspects of the present disclosure are summarized below as appendices. (Appendix 1) a control unit that controls a hoist that raises and lowers the elevator car in the elevator shaft; a storage unit that stores a time required for the car to reach a predetermined set speed from a stopped state by controlling the motor of the hoisting machine at a predetermined torque, The control unit includes a temporary control unit that, when the car stops between floors, temporarily controls the motor at a torque equal to or less than the predetermined torque for only within the arrival time. (Appendix 2) 2. The elevator control device according to claim 1, wherein the control unit sets a maximum torque of the motor as the predetermined torque and controls the hoisting machine. (Appendix 3) an abnormality detection unit that detects an abnormality in the elevator; a door opening determination unit that determines whether the car has landed on the floor and is in a door opening position where the door can be opened, The control unit has a stop control unit that stops the car when the abnormality detection unit detects an abnormality, 3. The elevator control device according to claim 1, wherein the temporary control unit performs the temporary control when the stop control unit stops the car and when the door opening determination unit determines that the position of the car is not the door open position. (Appendix 4) 4. The elevator control device according to claim 3, wherein the stop control unit stops the car at a timing when the door opening determination unit determines that the position of the car is at the door open position while the temporary control unit is performing the temporary control. (Appendix 5) the stop control unit stops the car after the temporary control of the temporary control unit if the door open determination unit does not determine that the position of the car is at the door open position while the temporary control unit is performing the temporary control, 4. The elevator control device according to claim 3, wherein the temporary control unit performs the temporary control again. (Appendix 6) the control unit has a measurement control unit that controls the motor with the predetermined torque from the stopped state of the car, 6. The elevator control device according to claim 1, further comprising a measurement unit that, when the measurement control unit performs control, measures a time required for the car to reach the set speed from the stopped state and stores the time as the arrival time in the memory unit. (Appendix 7) a code tape that is a tape arranged in the elevator shaft along the running direction of the car and that is provided with position information within the elevator shaft; 6. The elevator control device according to any one of appendixes 3 to 5, further comprising: a car position reading device attached to the car and configured to read the position information from the code tape. (Appendix 8) 8. The elevator control device according to claim 7, wherein the abnormality detection unit detects abnormalities including abnormalities in the car position reading device. (Appendix 9) A control method for an elevator equipped with a control unit that controls a hoist that raises and lowers an elevator car in a hoistway, storing a time required for the car to reach a predetermined set speed from a stopped state by controlling the motor of the hoisting machine at a predetermined torque; An elevator control method that performs temporary control to control the motor at or below the predetermined torque only within the arrival time when the car stops between floors. (Appendix 10) a control unit that controls a hoist that raises and lowers the elevator car in the elevator shaft; a storage unit that stores a time required for the car to reach a predetermined set speed from a stopped state by control at a predetermined torque of a motor included in the hoisting machine; a code tape that is a tape arranged in the elevator shaft along the running direction of the car and that is provided with position information within the elevator shaft; a car position reading device attached to the car and reading the position information from the code tape; an abnormality detection unit that detects an abnormality in the elevator including an abnormality in the car position reading device; a door opening determination unit that determines whether the car has landed on the floor and is in a door opening position where the door can be opened, The control unit a stop control unit that stops the car when the abnormality detection unit detects an abnormality; an elevator control device having a temporary control unit that, when the stop control unit stops the car and when the door-open determination unit determines that the position of the car is not the door-open position, temporarily controls the motor at a torque equal to or less than the predetermined torque for only within the arrival time; [Explanation of symbols]

[0081] 1. Elevator 5 Machine room 10 Elevator 11 Guide rail 12 Upper support part 13 Spring support 14 Spring 15 Lower support part 20 baskets 30 Hoisting machine 31 Motor 40 Cord Tape 50 Cage position reading device 55 Connection 60 Implantation position detection device 61 Landing Position Code 70 Platform Door 80 Main Rope 81 Deflector 82 Counterweight 100 Control Panel 110 control section 111 Temporary Control Department 112 Stop control section 113 Speed ​​calculation section 114 Normal control section 115 Measurement control section 120 Storage section 121 Setting speed 122 Specified torque 123 Arrival time 130 Abnormality detection unit 140 Door Opening Judgment Department 150 Measurement Unit 201 Location information 202 Landing position detection signal 203 Abnormal signal 204 Stop Signal 205 Stop signal 206 Judgment result 207 Temporary Control Signal 208 Stop Control Signal 209 Speed ​​signal 210 Measurement Control Signal 501 processor 502 memory 503 Signal Input / Output Section 1000 Elevator control device

Claims

1. a control unit that controls a hoist that raises and lowers the elevator car in the elevator shaft; a storage unit that stores a time required for the car to reach a predetermined set speed, which is a speed that allows the car to move safely from a stopped state in the event of an abnormality, by controlling the motor of the hoist with a predetermined torque, The control unit includes a temporary control unit that, when the car stops between floors, temporarily controls the motor at a torque equal to or less than the predetermined torque for only within the arrival time.

2. The elevator control device according to claim 1, wherein the control unit sets a maximum torque of the motor as the predetermined torque and controls the hoisting machine.

3. an abnormality detection unit that detects an abnormality in the elevator; a door opening determination unit that determines whether the car has landed on the floor and is in a door opening position where the door can be opened, The control unit has a stop control unit that stops the car when the abnormality detection unit detects an abnormality, 2. The elevator control device according to claim 1, wherein the temporary control unit performs the temporary control when the stop control unit stops the car and when the door-open determination unit determines that the position of the car is not the door-open position.

4. 4. The elevator control device according to claim 3, wherein the stop control unit stops the car at a timing when the door opening determination unit determines that the position of the car is at the door open position while the temporary control unit is performing the temporary control.

5. the stop control unit stops the car after the temporary control of the temporary control unit if the door open determination unit does not determine that the position of the car is at the door open position while the temporary control unit is performing the temporary control, The elevator control device according to claim 3 , wherein the temporary control unit performs the temporary control again.

6. the control unit has a measurement control unit that controls the motor with the predetermined torque from the stopped state of the car, 2. The elevator control device according to claim 1, further comprising a measurement unit that, when the measurement control unit performs control, measures a time required for the car to reach the set speed from the stopped state and stores the measured time in the memory unit as the arrival time.

7. a code tape that is a tape arranged in the elevator shaft along the running direction of the car and that is provided with position information within the elevator shaft; The elevator control device according to any one of claims 3 to 5, further comprising: a car position reading device attached to the car and configured to read the position information from the code tape.

8. The elevator control device according to claim 7, wherein the abnormality detection unit detects abnormalities including abnormalities in the car position reading device.

9. A control method for an elevator equipped with a control unit that controls a hoist that raises and lowers an elevator car in a hoistway, storing a time required for the car to reach a predetermined set speed, which is a speed at which the car can be safely moved in the event of an abnormality, from a stopped state by controlling the motor of the hoist with a predetermined torque; An elevator control method that performs temporary control to control the motor at or below the predetermined torque only within the arrival time when the car stops between floors.

10. a control unit that controls a hoist that raises and lowers the elevator car in the elevator shaft; a storage unit that stores a time required for the car to reach a predetermined set speed, which is a speed that allows the car to move safely from a stopped state in the event of an abnormality, by controlling the motor of the hoist with a predetermined torque; a code tape that is a tape arranged in the elevator shaft along the running direction of the car and that is provided with position information within the elevator shaft; a car position reading device attached to the car and reading the position information from the code tape; an abnormality detection unit that detects an abnormality in the elevator including an abnormality in the car position reading device; a door opening determination unit that determines whether the car has landed on the floor and is in a door opening position where the door can be opened, The control unit a stop control unit that stops the car when the abnormality detection unit detects an abnormality; an elevator control device having a temporary control unit that, when the stop control unit stops the car and when the door-open determination unit determines that the car is not in the door-open position, temporarily controls the motor at a torque equal to or less than the predetermined torque for only within the arrival time;

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