Elevator control device and elevator control method

Abstract

Even if the basket's travel speed is unknown, the basket should be moved at a speed below which it can travel safely. [Solution] The elevator control device includes a control unit 110 that controls the hoisting machine that raises and lowers the elevator car in the hoistway, and a storage 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 hoisting machine with a predetermined torque, and the control unit 110 has a temporary control unit 111 that temporarily controls the motor with a predetermined torque or less only within the time it takes to reach the destination.

Description

Technical Field

[0001] The present disclosure relates to an elevator control device that performs temporary control and a method for controlling an elevator.

Background Art

[0002] Patent Document 1 discloses an elevator facility in which a measurement tape attached in an elevator shaft for determining the position of a car is detected by a sensor device attached to the car. By the sensor device detecting the measurement tape, the position of the car can be determined and the running speed can be calculated.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the elevator facility described in Patent Document 1, when an abnormality is found, it is necessary to urgently stop the car. In particular, when an abnormality occurs in which the running speed of the car becomes unknown due to a failure of the sensor device or the like, if an attempt is made to move the car from the stop point, the car may run at a speed exceeding the speed at which it can run safely.

[0005] Therefore, an object of the present disclosure is to move the car at a speed not exceeding the speed at which it can run safely even when the running speed of the car becomes unknown.

Means for Solving the Problems

[0006] The elevator control device according to this disclosure comprises a control unit that controls a hoisting machine that raises and lowers the elevator car in the hoistway, and a storage unit 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 hoisting machine with a predetermined torque, and the control unit has a temporary control unit that temporarily controls the motor with a predetermined torque or less only within the time it takes to reach the car if the car stops between floors. [Effects of the Invention]

[0007] According to this disclosure, even if the basket's travel speed becomes unknown, the basket can be moved at a speed below the set speed at which it can travel safely. [Brief explanation of the drawing]

[0008] [Figure 1] This is a functional configuration diagram of the elevator control device according to Embodiment 1. [Figure 2] This is a diagram showing the configuration of an elevator according to Embodiment 1. [Figure 3] This is a hardware configuration diagram of the control panel according to Embodiment 1. [Figure 4] This flowchart shows an example of processing performed by the control panel according to Embodiment 1. [Figure 5] This figure shows the relationship between the travel speed and travel time of the cage when the motor according to Embodiment 1 rotates at a predetermined torque or less. [Figure 6] This figure illustrates, as an example, the processing performed by the control panel according to Embodiment 1 and the change in the cage's travel speed. [Figure 7] This flowchart shows an example of the process by which the measurement control unit and the measurement unit set the arrival time. [Figure 8] This figure shows the relationship between the travel speed and travel time of the cage when the motor according to Embodiment 1 rotates at a predetermined torque or less. [Figure 9] This figure shows the relationship between the travel speed and travel time of the cage when the motor according to Embodiment 1 rotates at a predetermined torque or less. [Modes for carrying out the invention]

[0009] In the embodiments and drawings, the same or corresponding elements are denoted by the same reference numeral. The descriptions of elements denoted by the same reference numeral as the described elements are omitted or simplified as appropriate. The arrows in the figures mainly indicate the flow of data or processing.

[0010] In this embodiment, the elevator car landing means that it stops at a position on any of the multiple floor levels in which the doors can be opened.

[0011] Embodiment 1. An elevator according to Embodiment 1, to which the elevator control device of the present invention is applied, will be described with reference to Figures 1 to 9.

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

[0013] <<Elevator 1>> Figure 2 is a diagram showing the configuration of elevator 1 according to Embodiment 1, to which the elevator control device 1000 of the present invention is applied. As shown in Figure 2, elevator 1 is installed in the machine room 5 and the hoistway 10. Elevator 1 is equipped with a car 20, a code tape 40, and a car position reading device 50 in the hoistway 10. Elevator 1 includes a hoisting machine 30 and a control panel 100 having a control unit 110 and a storage unit 120 in the machine room 5. In addition, the elevator 1 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 compensator car 81, and a counterweight 82.

[0014] In the building where the elevator 1 is installed, a hoistway 10 for the car 20 of the elevator to move up and down is provided. The hoistway 10 is a vertically long space extending over a plurality of floors. A landing is provided on each of the plurality of floors. A landing door 70 is installed at the landing. Hereinafter, vertically upward is referred to as "up", and vertically downward is referred to as "down".

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

[0016] In the hoistway 10, a guide rail 11 is provided along the traveling direction of the car 20. An upper support portion 12 is provided above the guide rail 11, and a lower support portion 15 is provided below the guide rail 11. The upper support portion 12 and the lower support portion 15 are members for holding the code tape 40.

[0017] The code tape 40 is arranged in the hoistway 10 along the traveling direction of the car 20. The upper end of the code tape 40 is fixed to the upper support portion 12, and the lower end of the code tape 40 is fixed to the spring support portion 13. The spring 14 is provided between the spring support portion 13 and the lower support portion 15, so that the code tape 40 is suspended in the hoistway 10 while being tensioned by the spring 14. The code tape 40 is given position information in the hoistway 10. The code tape 40 is, for example, a magnetic code tape 40, and a code for specifying the position of the car 20 is attached.

[0018] The elevator car 20 is powered by a hoisting machine 30 that operates in response to commands from a control panel 100 (described later), and travels vertically within the elevator shaft 10 along the guide rails 11. Passengers and vehicles can board and alight from the elevator car 20, and luggage can be loaded and unloaded through landing doors 70 installed on multiple floors.

[0019] The elevator car 20 is equipped with an elevator car position reading device 50 and a landing position detection device 60 via a connecting part 55. The elevator car position reading device 50 reads position information from the code tape 40 and transmits the read position information to the control unit 110 of the control panel 100. This allows the control unit 110 to determine the position within the elevator shaft 10 and to determine the speed of the elevator car 20 from the rate of change per unit time. The landing position detection device 60 detects the landing position code 61, and if detected, transmits the landing position detection signal to the door open determination unit 140 of the control unit 110, which will be described later. This allows the control unit 110 to determine the stopping position of the car 20.

[0020] The cage 20 and the counterweight 82 are suspended within the elevator shaft 10 by the main rope 80. One end of the main rope 80 is connected to the upper end of the basket 20. The main rope 80 is wrapped around the hoisting machine 30 and the deflection wheel 81. A counterweight 82 is connected to the other end of the main rope 80.

[0021] A machine room 5 is located above the elevator shaft 10. The hoisting machine 30 located in the machine room 5 has a motor 31. As the motor 31 of the hoisting machine 30 rotates, the basket 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 cage 20, it transmits a stop status signal 205 to the control unit 110.

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

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

[0024] The set speed of 121 is the set value for the travel speed of the basket 20. The set speed 121 is stored in the memory unit 120 beforehand. In this embodiment, the set speed 121 is the upper limit speed used to safely move the car 20 to the landing door 70 in the event of an abnormality, so it is desirable to set it to a lower speed than the normal travel speed of the car 20.

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

[0026] The temporary control torque 122a is the commanded torque value to be generated by the motor 31 when performing the temporary control described later. The temporary control torque 122a is stored in the memory unit 120 beforehand. The temporary control torque 122a is a value less than or equal to the predetermined torque 122.

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

[0028] <<Anomaly detection unit 130>> The abnormality detection unit 130 detects abnormalities in elevator 1. Abnormalities in elevator 1 include the occurrence of events that affect the function of elevator 1, such as earthquakes, flooding, or power outages, as well as malfunctions or defects in the equipment installed in elevator 1. The abnormality detection unit 130 detects an abnormality by receiving a signal indicating an abnormality or by comparing the output value of the device provided by the elevator 1 with the normal value.

[0029] In this embodiment, the abnormality detection unit 130 detects an abnormality in the elevator car position reading device 50. The abnormality detection unit 130 detects an abnormality in the car position reader 50 when it receives an abnormality signal 203 from the car position reader 50, when it finds an abnormality in the position information 201 read by the car position reader 50, or when it is unable to obtain position information 201 from the car position reader 50 for a predetermined time. If 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. If the anomaly detection unit 130 detects an anomaly, it outputs an anomaly notification signal to the measurement control unit 115, which will be described later.

[0030] <<Door opening determination unit 140>> The door opening determination unit 140 determines whether the cage 20 has landed and is in the door opening position where the door can be opened. The door-open determination unit 140 receives a landing position detection signal 202 from the landing position detection device 60 and determines that the car 20 is in the door-open position where the landing door 70 is located. The door open determination unit 140 transmits the determination result 206 of 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 elevator car 20 stops between floors. Temporary control refers to controlling the motor 31 with a temporary control torque 122a, which is less than or equal to a predetermined torque 122, only within the arrival time 123. The temporary control unit 111 controls with a constant torque. Furthermore, performing control only within the arrival time 123 means that control is performed within a time period with the arrival time 123 as the upper limit. The elevator car 20 is stopped between floors when the elevator car 20 is stopped by the stop control unit 112 (described later), and the door open determination unit 140 determines that the elevator car 20 is not in the door open position.

[0033] The temporary control unit 111 receives a stop status signal 205 from the hoisting machine 30 and determines that the stop control unit 112 has stopped the cage 20. The temporary control unit 111 obtains a determination result 206 from the door open determination unit 140, which determines whether or not the position of the car 20 is in the door open position. The temporary control unit 111 transmits a temporary control signal 207 to the hoisting machine 30 to command temporary control. The temporary control unit 111 transmits a temporary control signal 207 to the stop control unit 112 while performing temporary control. That is, the temporary control signal 207 is transmitted continuously for a period of up to 123 minutes.

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

[0035] Furthermore, if the door-open 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 will stop the car 20 after the temporary control unit 111 has finished its temporary control. In other words, if the stop control unit 112 is unable to obtain a determination result 206 from the door open determination unit 140 indicating that the car 20 is in the door open position while it is receiving a temporary control signal 207 from the temporary control unit 111, it will send a stop control signal 208 to the hoisting machine 30 at the moment the 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 doors 70 at the timing when the door open determination unit 140 determines that the car 20 is in the open position. In other words, if the stop control unit 112 receives a temporary control signal 207 from the temporary control unit 111 and obtains a determination result 206 from the door open determination unit 140 indicating that the car 20 is in the open position, it transmits a stop control signal 208 to the hoisting machine 30. Also, if the stop control unit 112 receives a stop status signal 205 from the hoisting machine 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 cage 20.

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

[0039] Under normal circumstances, the control unit 114 receives a speed signal 209 from the speed calculation unit 113. The normal control unit 114 controls the hoisting machine 30 under normal conditions based on the received speed signal 209. Here, "normal operation" refers to a time when the abnormality detection unit 130 has not detected an abnormality, or when the measurement control described later is not being performed. Examples of control of the hoisting machine 30 during normal operation include raising and lowering the elevator car 20 in response to passenger calls for a landing or elevator car.

[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 status 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 cage 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 it is operated by the manager or maintenance staff of elevator 1 to perform measurement control. Furthermore, the measurement control unit 115 may operate automatically when the abnormality detection unit 130 has not detected an abnormality, that is, when it has not received a signal from the abnormality detection unit 130 indicating an abnormality. Furthermore, if the measurement control unit 115 operates automatically, it is desirable that this be done when there are no passengers in the car 20. Whether or not there are passengers in the car 20 can be determined by obtaining information from the normal 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 time as the arrival time 123 in the storage unit 120. 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 it receives the measurement control signal 210 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 cage 20 reaches the set speed 121 is the time when the speed calculation unit 113 receives the speed signal 209 indicating the set speed 121.

[0043] Based on Figure 3, the hardware configuration of the control panel 100 of elevator 1 to which the elevator control device 1000 of the present invention is applied will be described. Each component of the control panel 100 consists of a computer equipped with a processor 501, memory 502, and signal input / output unit 503. Each function of the control panel 100 is implemented by this computer. In other words, the computer's memory 502 stores the programs necessary to implement each function of the control panel 100. Furthermore, the information stored in the memory unit 120 is stored in the memory 502. The processor 501 performs calculations to control the movement of the control panel 100 based on the program stored in the memory 502.

[0044] ***Explanation of operation*** The operation of the elevator 1 in Embodiment 1, to which the elevator control device 1000 of the present invention is applied, will be described below. An example of the processing performed by the control panel 100 will be explained with reference to the flowchart shown in Figure 4.

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

[0046] <<Step S102>> In step S102, the anomaly detection unit 130 detects an anomaly. If the anomaly detection unit 130 does not detect an anomaly, 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 proceeds to step S104.

[0047] <<Step S103>> In step S103, the normal control unit 114 starts controlling the hoisting machine 30 under normal conditions. 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 processing in step S104 is performed for the first time, the stop control unit 112 receives a stop signal 204 from the abnormality detection unit 130 and transmits a stop control signal 208 to the hoisting machine 30 to stop the cage 20. If the processing in step S104 is performed for the second time or later, the stop control unit 112, while receiving the temporary control signal 207 from the temporary control unit 111, fails to obtain a determination result 206 from the door open determination unit 140 indicating that the car 20 is in the door open position, and transmits a stop control signal 208 to the hoisting machine 30 at the moment the reception of the temporary control signal 207 is interrupted. When the hoisting machine 30 receives the stop control signal 208, it stops the rotation of the motor 31 and activates the brake (not shown) of the hoisting machine 30, thereby stopping the cage 20. When the hoisting machine 30 stops the cage 20, it transmits a stop status 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 cage 20 is in the door open position. More specifically, the door open determination unit 140 determines that the car 20 is in the open position when it receives a landing position detection signal 202 from the landing position detection device 60. Then, in order to open the landing door 70, it transmits the determination result 206 to the stop control unit 112 and proceeds to step S109. Furthermore, the door-open determination unit 140 determines that the car 20 is not in the door-open position if it has not received a landing position detection signal 202 from the landing position detection device 60. It then transmits the determination result 206 to the temporary control unit 111 and proceeds to step S106.

[0050] <<Step S106>> In step S106, the movement of the car 20 is started with a temporary control torque 122a that is less than or equal to a predetermined torque of 122. More specifically, when the temporary control unit 111 receives a stop status signal 205 from the hoisting machine 30 and obtains a determination result 206 from the door open determination unit 140 indicating that 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. While performing temporary control, the temporary control unit 111 transmits a temporary control signal 207 to the stop control unit 112.

[0051] When the hoisting machine 30 receives a temporary control signal 207 from the temporary control unit 111, the motor 31 of the hoisting machine 30 rotates with a temporary control torque 122a, which is less than or equal to a predetermined torque 122, only for a period of time 123. Using Figure 5, we will explain the travel speed of the cage 20 when the hoisting machine 30 is temporarily controlled. Figure 5 shows the relationship between the travel speed and travel time of the cage 20 when the motor 31 rotates with a constant temporary control torque 122a. In Figure 5, the vertical axis represents the travel speed of the cage 20, and the horizontal axis represents the travel time of the cage 20. Furthermore, line 1 shown in Figure 5 represents the case where the temporary control torque 122a is set to a predetermined torque 122. Line 2 represents the case where the temporary control torque 122a is set to less than the predetermined torque 122. As shown by straight lines 1 and 2, by rotating the motor 31 with a temporary control torque 122a that is less than or equal to a predetermined torque 122, and by keeping the travel time within the arrival time 123, the travel speed of the car 20 can be kept below the set speed 121. As shown in Figure 4, the process proceeds to step S107 after step S106.

[0052] <<Step S107>> In step S107, while the hoisting machine 30 is under temporary control, that is, within the arrival time 123, the door open determination unit 140 determines whether the cage 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 step S104 in order to perform temporary control again. The return to step S104 occurs when the arrival time 123 has elapsed since the start of step S106. If the door open determination unit 140 determines that the cage 20 is in the open position, the process proceeds to step S108.

[0053] <<Step S108>> In step S108, if the stop control unit 112 receives a temporary control signal 207 from the temporary control unit 111, that is, within the arrival time 123, and obtains a determination result 206 from the door open determination unit 140 indicating that the car 20 is in the door open position, it transmits a stop control signal 208 to the hoisting machine 30. When the hoisting machine 30 receives the stop control signal 208, it stops the rotation of the motor 31 and activates the brake (not shown) of the hoisting machine 30, thereby stopping the cage 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, the stop control unit 112 opens the landing door 70 when it obtains a determination result 206 from the door open determination unit 140 that the car 20 is in the door open position, and also receives a stop status signal 205 from the hoisting machine 30. The process ends in step S109.

[0055] Figure 6 is a diagram illustrating, as an example, the processing performed by the control panel 100 described above and the change in the travel speed of the car 20. In Figure 6, the vertical axis represents the travel speed of the cage 20, and the horizontal axis represents the processing time of the operations performed by the control panel 100. An example of temporary control by the temporary control unit 111 will be explained using Figure 6.

[0056] For example, if an abnormality is detected while the car 20 is in motion, the stop control unit 112 will stop the car 20 (step S104). Then, if the door open determination unit 140 determines that the car 20 is not in the open position (step S105), the temporary control unit 111 performs temporary control with a constant temporary control torque 122a that is less than or equal to the predetermined torque 122 (step S106). In this temporary control, the temporary control torque 122a is set to the predetermined torque 122, just as in the straight line 1 shown in Figure 5. During the arrival time in which 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 it is not in the door open position, the stop control unit 112 stops the car 20 (step S104). Then, the door open determination unit 140 determines that the car 20 is not in the open 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 open determination unit 140 determines whether the car 20 is in the open position (step S107), and if it is in the open position, the stop control unit 112 stops the car 20 (step S108) and opens the landing door 70 (step S109).

[0057] Referring to the flowchart shown in Figure 7, an example of the process in which the measurement control unit 115 and the measurement unit 150 set the arrival time 123, which takes place in step S101 of Figure 4, will be explained. This process is performed automatically when the elevator 1 is operated to perform measurement and control by the manager or maintenance staff, or when the abnormality detection unit 130 does not detect an abnormality.

[0058] <<Step S101a>> In step S101a, the anomaly detection unit 130 detects an anomaly. If the anomaly detection unit 130 detects an anomaly, the process is terminated. If the abnormality detection unit 130 does not detect an abnormality, that is, if the measurement control unit 115 does not receive an abnormality signal 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 a stop signal 204 from the measurement control unit 115, it transmits a stop control signal 208 to the hoisting machine 30 to stop the cage 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 cage 20. Furthermore, the measurement control unit 115 transmits a measurement control signal 210 to the measurement unit 150 at the timing when measurement control is to begin. 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 speed signal 209 from the speed 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 it receives the measurement control signal 210 and the time it receives the speed signal 209 indicating the set speed 121. 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 memory unit 120 stores the arrival time 123. The process ends in step S101e.

[0063] As explained using Figures 4 and 7, the control panel 100 stores the time 123 it takes for the car 20 to reach a predetermined set speed 121 from a stopped state by controlling the motor 31 with a predetermined torque 122. If the car 20 stops between floors, temporary control can be performed to control the motor 31 with a torque of 122 or less only within the time 123 it takes to reach the destination.

[0064] ***Summary of Embodiment 1*** The elevator 1 of Embodiment 1 comprises a car 20 (also called a passenger car) that operates within a hoistway 10, a code tape 40 that has position information within the hoistway 10, and a landing position detection device 60 provided on each floor within the hoistway 10 that reads the landing position information of the car 20 on each 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, in the event of a position information anomaly, it moves to the landing position by traveling in predetermined intervals (referring to the arrival time 123) and safely rescues passengers. Furthermore, the system records the time from when the motor 31 is started at maximum output until the car 20 reaches a set speed 121 (for example, rescue speed), and uses this time as the time the vehicle can travel in the event of a location information anomaly.

[0065] ***Effects of Embodiment 1*** As described above, in the first embodiment, when the elevator car 20 stops between floors, the elevator control device 1000 temporarily controls the motor 31 to a predetermined torque of 122 or less only within the arrival time 123. Therefore, even if the travel speed of the car 20 is unknown, it is possible to prevent it from exceeding the set speed 121 and move the car 20 at a set speed of 121 or less, which allows for safe travel.

[0066] Furthermore, while the temporary control unit 111 is performing temporary control, if the door open determination unit 140 determines that the car 20 is in the door open position, it will stop the car 20. Therefore, even if the travel speed of the car 20 becomes unknown, it will be possible to move to the door open position at a set speed of 121 or less and perform a rescue operation to rescue passengers.

[0067] Furthermore, since the maximum torque of the motor 31 is set as a predetermined torque 122, even if there is a malfunction in the motor 31 and it is not possible to control the motor 31 with the specified temporary control torque 122a, the car 20 can be safely moved at a set speed 121 or less.

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

[0069] Furthermore, by having the measurement control unit 115 and the measurement unit 150 set the arrival time 123, it is possible to set an arrival time 123 that is appropriate for each elevator.

[0070] ***Modified Example of Embodiment 1*** <<Example 1>> In this embodiment, the memory unit 120 stores only one value for the arrival time 123, but it is not limited to this. The memory unit 120 stores multiple arrival times 123, and the temporary control unit 111 may use the multiple arrival times 123 depending on the situation to perform temporary control.

[0071] For example, the memory 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 may preferentially perform temporary control based on the arrival time 123 measured by the measurement unit 150, and may also perform temporary control based on the arrival time 123 set in advance by the elevator manager or manufacturer if there is an abnormality in the processing of the speed calculation unit 113, the measurement control unit 115, or the measurement unit 150.

[0072] <<Modification 2>> In this embodiment, the maximum torque of the motor 31 is set as a predetermined torque 122, but the embodiment is not limited to this. The predetermined torque 122 may be set lower than the maximum torque. Setting the predetermined torque 122 lower than the maximum torque allows for gentler acceleration of the cage 20 during temporary control.

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

[0074] For example, the memory unit 120 stores the torque used in controlling the hoisting machine 30 under normal conditions and the maximum torque as predetermined torques 122. The memory unit 120 also stores the arrival time 123 corresponding to the torque used in controlling the hoisting machine 30 under normal conditions and the arrival time 123 corresponding to the maximum torque. The temporary control unit 111 may prioritize performing temporary control based on the torque used in the normal control of the hoisting machine 30, and if there is a malfunction in the motor 31 and it becomes impossible to control the motor 31 with the specified torque, it may assume that the motor 31 is being controlled with the maximum torque and perform temporary control based on the arrival time 123 corresponding to the maximum torque.

[0075] <<Modification 4>> In this embodiment, the temporary control unit 111 controlled with a constant temporary control torque 122a that was less than or equal to a predetermined torque 122, but it is not limited to this. The temporary control unit 111 may control with a non-constant torque as long as it is less than or equal to the predetermined torque 122. Figures 8 and 9 show the relationship between the travel speed and travel 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 Figure 8, the temporary control unit 111 may control the traction with a torque such that the traction speed increases exponentially, as long as the torque is less than or equal to the predetermined torque 122. In this case, as long as the traction time of the car 20 does not exceed the arrival time 123, the traction speed of the car 20 will not exceed the set speed 121. Furthermore, as shown by line 1 in Figure 9, the temporary control unit 111 may control the traction speed in a stepped manner, provided that the torque is below a predetermined torque of 122. In this case, as long as the traction time of the car 20 does not exceed the arrival time of 123, the traction speed of the car 20 will not exceed the set speed of 121.

[0076] <<Modification 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, using the time when it receives the measurement control signal 210 and the time when it receives the speed signal 209 indicating the set speed 121, but is not limited to this. The measuring unit 150 may receive a signal from the hoisting machine 30 when the motor 31 starts moving due to measurement and control, and measure the arrival time 123 from the time of reception of that signal and the time when it receives the speed signal 209 indicating the set speed 121.

[0077] <<Modification 6>> In this embodiment, the abnormality detection unit 130 detected an abnormality in the elevator car position reading device 50, and the temporary control unit 111 performed temporary control; however, the embodiment is not limited to this.

[0078] The abnormality detection unit 130 may also be configured to detect an abnormality in the elevator 1 other than an abnormality in the car position reading device 50, which may cause the temporary control unit 111 to perform temporary control. For example, when the abnormality detection unit 130 detects an abnormality in the elevator 1, such as an earthquake, flooding, power outage, or other event affecting the elevator 1's function, or a malfunction or failure of equipment 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 status signal 205 from the hoisting machine 30 and obtains a determination result 206 from the door open determination unit 140 that the car 20 is not in the door open position, it transmits a temporary control signal 207 to the hoisting machine 30 to perform temporary control.

[0079] Alternatively, the temporary control unit 111 may perform temporary control even if the abnormality detection unit 130 does not detect an abnormality in the elevator 1. Even if the abnormality detection unit 130 does not detect an abnormality in the elevator 1, the temporary control unit 111 of the elevator control device 1000 may perform temporary control if it receives a stop status signal 205 from the hoisting machine 30 and obtains a determination result 206 from the door open determination unit 140 that the car 20 is not in the door open position. In other words, the temporary control unit 111 may perform temporary control when the elevator car stops between floors.

[0080] The various aspects of this disclosure are summarized below as an appendix. (Note 1) A control unit that controls the hoisting machine that raises and lowers the elevator car in the hoistway, The hoisting machine includes a storage unit that stores the time it takes for the cage to reach a predetermined set speed from a stopped state by controlling the motor of the hoisting machine with a predetermined torque, The control unit is an elevator control device having a temporary control unit that, when the elevator car stops between floors, temporarily controls the motor to a torque below a predetermined level only within the time it takes to reach the floor. (Note 2) The control unit sets the maximum torque of the motor as the predetermined torque and controls the hoisting machine, as described in Appendix 1. (Note 3) An abnormality detection unit for detecting abnormalities in the elevator, The system includes a door-open determination unit that determines whether the basket is in a door-open position where it can be opened, The control unit includes a stop control unit that stops the car when the abnormality detection unit detects an abnormality, The elevator control device according to Appendix 1 or 2, wherein the temporary control unit performs the temporary control when the stop control unit stops the elevator car and the door open determination unit determines that the elevator car is not in the door open position. (Note 4) The elevator control device described in Appendix 3, wherein the stop control unit stops the elevator car at the timing when the door open determination unit determines that the car is in the door open position while the temporary control unit is performing the temporary control. (Note 5) If the door open determination unit does not determine that the car is in the door open position while the temporary control unit is performing the temporary control, the stop control unit will stop the car after the temporary control unit has performed the temporary control. The temporary control unit is the elevator control device described in Appendix 3, which performs the temporary control again. (Note 6) The control unit includes a measurement control unit that controls the motor with the predetermined torque from the stopped state of the cage, The elevator control device according to any one of the appendices 1 to 5, further comprising a measurement unit that, when the measurement control unit performs control, measures the time it takes for the car to reach the set speed from the stopped state and stores the time of arrival in the storage unit. (Note 7) A code tape is a tape arranged within the elevator shaft along the direction of travel of the elevator car, and is a tape to which positional information within the elevator shaft is attached. An elevator control device according to any one of the appendices 3 to 5, comprising a car position reading device attached to the car and reading the position information from the code tape. (Note 8) The abnormality detection unit is an elevator control device as described in Appendix 7, which detects abnormalities including abnormalities in the car position reading device. (Note 9) In an elevator control method comprising a control unit for controlling a hoisting machine that raises and lowers an elevator car in a hoistway, The hoisting machine's motor is controlled with a predetermined torque to store the time it takes for the cage to reach a predetermined set speed from a stopped state. An elevator control method that, when the elevator car stops between floors, performs temporary control to control the motor at a predetermined torque or less only within the time it takes to reach the floor. (Note 10) A control unit that controls the hoisting machine that raises and lowers the elevator car in the hoistway, A storage unit that stores the time it takes for the cage to reach a predetermined set speed from a stopped state by controlling the motor of the hoisting machine with a predetermined torque, A code tape is a tape arranged within the elevator shaft along the direction of travel of the elevator car, and is a tape to which positional information within the elevator shaft is attached. A basket position reading device attached to the basket reads the position information from the cord tape, An abnormality detection unit that detects abnormalities in the elevator, including an abnormality in the car position reading device, The system includes a door-open determination unit that determines whether the basket is in a door-open position where it can be opened, The control unit, When the abnormality detection unit detects an abnormality, the stop control unit stops the cage, An elevator control device having a temporary control unit that, when the stop control unit stops the elevator car and the door open determination unit determines that the elevator car is not in the door open position, temporarily controls the motor at a torque below the predetermined torque only within the arrival time. [Explanation of Symbols]

[0081] 1 Elevator 5 Machine room 10 Elevator 11 Guide rails 12 Upper support part 13 Spring support section 14 springs 15 Lower support part 20 baskets 30 Hoisting machine 31 Motor 40 Cord Tapes 50. Cage position reading device 55 Connection part 60. Implantation position detection device 61 Implantation location code 70 landing doors 80 Main rope 81. Vehicles that are deflected 82. Counterweight 100 control panel 110 Control Unit 111 Temporary Control Unit 112 Stop Control Unit 113 Speed ​​calculation section 114 Normal Operation Control Unit 115 Measurement and Control Unit 120 Storage section 121 Setting speed 122 Specific torque 123 Arrival time 130 Anomaly detection unit 140 Door Opening Judgment Unit 150 Measurement Unit 201 Location information 202 Implantation 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 the hoisting machine that raises and lowers the elevator car in the hoistway, The hoisting machine includes a storage unit that stores the time it takes for the cage to reach a predetermined set speed from a stopped state by controlling the motor of the hoisting machine with a predetermined torque, The control unit is an elevator control device having a temporary control unit that, when the elevator car stops between floors, temporarily controls the motor to a torque below a predetermined level only within the time it takes to reach the floor.

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

3. An abnormality detection unit for detecting abnormalities in the elevator, The system includes a door-open determination unit that determines whether the basket is in a door-open position where it can be opened, The control unit includes a stop control unit that stops the car when the abnormality detection unit detects an abnormality, The elevator control device according to claim 1, wherein the temporary control unit performs the temporary control when the stop control unit stops the elevator car and the door open determination unit determines that the elevator car is not in the door open position.

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

5. If the door open determination unit does not determine that the car is in the door open position while the temporary control unit is performing the temporary control, the stop control unit will stop the car after the temporary control unit has performed 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 includes a measurement control unit that controls the motor with the predetermined torque from the stopped state of the cage, The elevator control device according to claim 1, further comprising a measurement unit that, when the measurement control unit performs control, measures the time it takes for the car to reach the set speed from the stopped state and stores the time of arrival in the storage unit.

7. A code tape is a tape arranged within the elevator shaft along the direction of travel of the elevator car, and is a tape to which positional information within the elevator shaft is attached. An elevator control device according to any one of claims 3 to 5, comprising a car position reading device attached to the car and reading 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. In an elevator control method comprising a control unit for controlling a hoisting machine that raises and lowers an elevator car in a hoistway, The hoisting machine's motor is controlled with a predetermined torque to store the time it takes for the cage to reach a predetermined set speed from a stopped state. An elevator control method that, when the elevator car stops between floors, performs temporary control to control the motor at a predetermined torque or less only within the time it takes to reach the floor.

10. A control unit that controls the hoisting machine that raises and lowers the elevator car in the hoistway, A storage unit that stores the time it takes for the cage to reach a predetermined set speed from a stopped state by controlling the motor of the hoisting machine with a predetermined torque, A code tape is a tape arranged within the elevator shaft along the direction of travel of the elevator car, and is a tape to which positional information within the elevator shaft is attached. A basket position reading device attached to the basket reads the position information from the cord tape, An abnormality detection unit that detects abnormalities in the elevator, including an abnormality in the car position reading device, The system includes a door-open determination unit that determines whether the basket is in a door-open position where it can be opened, The control unit, When the abnormality detection unit detects an abnormality, the stop control unit stops the cage, An elevator control device having a temporary control unit that, when the stop control unit stops the elevator car and the door open determination unit determines that the elevator car is not in the door open position, temporarily controls the motor at a torque below the predetermined torque only within the arrival time.

Images