CN114104918B - Elevator device - Google Patents

Elevator device Download PDF

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Publication number
CN114104918B
CN114104918B CN202011262748.0A CN202011262748A CN114104918B CN 114104918 B CN114104918 B CN 114104918B CN 202011262748 A CN202011262748 A CN 202011262748A CN 114104918 B CN114104918 B CN 114104918B
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Prior art keywords
air pressure
car
change
control unit
air
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CN114104918A (en
Inventor
神农大辉
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02—Cages, i.e. cars
    • B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
    • B66B11/024—Ventilation systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/3415—Control system configuration and the data transmission or communication within the control system
    • B66B1/3423—Control system configuration, i.e. lay-out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/3415—Control system configuration and the data transmission or communication within the control system
    • B66B1/3446—Data transmission or communication within the control system
    • B66B1/3461—Data transmission or communication within the control system between the elevator control system and remote or mobile stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/3492—Position or motion detectors or driving means for the detector
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B2201/00—Aspects of control systems of elevators
    • B66B2201/40—Details of the change of control mode
    • B66B2201/403—Details of the change of control mode by real-time traffic data

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)

Abstract

An elevator apparatus is provided to perform air pressure control with high accuracy. An elevator apparatus includes a car, a receiving device, and an air pressure control unit. The car is lifted and lowered in the hoistway. The receiving device receives at least one of sea level air pressure and air temperature via a network. The air pressure control unit calculates an air pressure change associated with the lifting of the car from at least one of the sea level air pressure and the air temperature received by the receiving device, and controls the air pressure inside the car so that the air pressure change per unit time falls within a predetermined range.

Description

Elevator device
Technical Field
The present invention relates to an elevator apparatus for controlling the air pressure of a car.
Background
When the elevator car is in a lifting operation, the speed of the elevator car gradually increases from the starting time, and after the elevator car reaches the highest speed, the elevator car gradually decreases in speed to stop. When the air pressure in the car is not controlled, the air pressure in the car changes in synchronization with the air pressure outside the car, so that the change in air pressure in the car per unit time is small at the time of departure and at the time of stop, and the change in air pressure in the car per unit time rapidly increases with the increase in the moving speed of the car. The large pressure change per unit time in the car may cause discomfort to the passengers.
Patent document 1 discloses an elevator apparatus including an air pressure control device for controlling air pressure in a car. In this elevator apparatus, the air pressure control device controls the air pressure in the car by supplying or discharging air in the car so that the change in the air pressure in the car per unit time during the lifting operation of the car becomes uniform. In this elevator apparatus, the outside air pressure at the departure floor and the destination floor is calculated based on the calculation formula, and the target air pressure change pattern is set so that the air pressure change in the car is constant during the time from the departure to the stop of the lifting operation.
Prior art literature
Patent document 1: japanese patent laid-open publication No. 2014-181100
Disclosure of Invention
The elevator apparatus does not have a structure for updating information of sea level air pressure or air temperature used for calculation of the air pressure outside the car. Therefore, when the sea level air pressure or the air temperature greatly changes, there is a problem that an error occurs in the control of the air pressure.
The present invention has been made in view of the above problems, and an object thereof is to provide an elevator apparatus that performs air pressure control with high accuracy in the elevator apparatus.
An elevator device of the present invention includes: a car that moves up and down in a hoistway; a receiving device for receiving at least one of sea level air pressure and air temperature via a network; and an air pressure control unit that calculates an air pressure change associated with the lifting of the car based on at least one of the sea level air pressure and the air temperature received by the receiving device, and controls the air pressure inside the car so that the air pressure change per unit time falls within a predetermined range. When the calculated change in air pressure associated with the lifting of the car is greater than a predetermined range, the air pressure control unit controls the air pressure inside the car so that the change in air pressure per unit time falls within the predetermined range by making the moving speed of the car slower than the normal moving speed.
Effects of the invention
According to the present invention, it is possible to provide an elevator apparatus that performs air pressure control with high accuracy in the elevator apparatus.
Drawings
Fig. 1 is a diagram showing an entire elevator system including an elevator apparatus according to embodiment 1.
Fig. 2 is a flowchart showing the entire control of the elevator apparatus according to embodiment 1.
Fig. 3 is a flowchart showing control of air pressure control mode calculation in the elevator apparatus according to embodiment 1.
Fig. 4 is a diagram showing an example of air pressure change when the elevator apparatus according to embodiment 1 is lowered.
Fig. 5 is a flowchart showing control of the elevator apparatus according to embodiment 2 to determine whether or not speed adjustment is necessary.
Fig. 6 is a diagram showing an example of air pressure change when the elevator apparatus according to embodiment 2 is lowered.
Fig. 7 is a flowchart showing control of resetting the air pressure control mode of the elevator apparatus according to embodiment 2.
Description of the reference numerals
11: a car; 12: a counterweight; 13: a rope; 14: a traction machine; 2: a control device; 21: an interface; 22: a processor; 22a: a control unit; 22b: an air pressure control unit; 23: a storage unit; 3: a communication device; 4: an air pressure adjusting device; 100: an elevator apparatus; 200: an external server; 300: and (3) the Internet.
Detailed Description
Embodiment 1.
An elevator system including the elevator apparatus 100 according to embodiment 1 will be described in detail below with reference to the drawings. In addition, the same reference numerals in the drawings denote the same or corresponding structures and steps.
Fig. 1 is a diagram showing an elevator system according to embodiment 1. First, the overall structure of the elevator system will be described with reference to fig. 1.
The elevator system is constituted by an elevator apparatus 100 and an external server 200. In this elevator system, the elevator apparatus 100 receives sea level air pressure and air temperature required for calculating air pressure from the external server 200 via the internet 300 as a network, and performs control based on the air pressure calculated from the received sea level air pressure and air temperature.
The external server 200 is a computer connected to the internet 300. The external server 200 is connected to the elevator apparatus 100 via the internet 300. The external server 200 includes a program for extracting information on sea level air pressure and air temperature from the actual measurement values of the weather forecast or measurement device. Further, a program for outputting information of the current sea level air pressure and the air temperature to the elevator apparatus 100 in accordance with an output command from the elevator apparatus 100 is provided. The output command from the elevator apparatus 100 includes the position information of the elevator apparatus 100, and the program is for outputting information of the current sea level air pressure and the air temperature at the installation position of the elevator apparatus 100 determined based on the position information of the elevator apparatus 100 to the elevator apparatus 100.
Next, the structure of the elevator apparatus 100 will be described in detail with reference to fig. 1. The elevator apparatus 100 includes a car 11, a counterweight 12, ropes 13, a hoisting machine 14, a control device 2, a communication device 3, and an air pressure adjusting device 4.
The car 11 housing people and goods is connected to the counterweight 12 by ropes 13. Furthermore, the counterweight 12 is a metal counterweight. When the elevator is driven, the car 11 and the counterweight 12 move along guide rails, not shown, in the hoistway.
The rope 13 connecting the car 11 and the counterweight 12 is pulled by the hoist 14 to move the car 11 and the counterweight 12. The hoisting machine 14 is provided with a driving device, not shown, and drives the rope 13 to move the car 11 in accordance with a command from the control device 2.
The control device 2 includes an interface 21, a processor 22, and a storage unit 23, and is a device that controls the entire elevator apparatus 100 and the air pressure adjusting device 4 described later.
The interface 21 includes terminals of electric wires connected to a communication device 3 and an air pressure adjusting device 4, which will be described later, and a driving device of the hoisting machine 14, which is not shown. The controller 2 is electrically connected to a processor 22 to be described later.
The processor 22 is a CPU (Central Processing Unit: central processing unit), and is connected to the interface 21 and the storage unit 23 to exchange data. The processor 22 includes a control unit 22a for controlling the entire elevator apparatus 100 and an air pressure control unit 22b for controlling the air pressure regulator 4.
The control unit 22a includes a software module for controlling the air pressure control unit 22b and controlling the entire elevator apparatus 100. Further, the communication device 3 described later is used to obtain the sea level air pressure and the air temperature.
The air pressure control unit 22b includes a software module for calculating the change in elevation associated with the movement of the car 11 based on a speed command for moving the car 11, and a software module for calculating the change in external air pressure associated with the movement of the car 11 based on the change in elevation and the sea level air pressure and the air temperature acquired by the control unit 22 a. The air pressure control unit 22b includes a software module that calculates an air pressure control pattern from the calculated external air pressure change and outputs the air pressure control pattern as an air pressure control command to the air pressure regulator 4.
The storage unit 23 is a storage device constituted by a nonvolatile memory and a volatile memory. The storage unit 23 stores the sea level air pressure and air temperature acquired by the control unit 22a, the air pressure control mode calculated by the air pressure control unit 22b, a program executed by the processor 22, and the like.
The communication device 3 is a receiving device and a transmitting device that perform wired communication or wireless communication, and is connected to the interface 21 of the control device 2 via an electric wire. The communication device 3 transmits an output command including the position information of the elevator apparatus 100 to the external server 200 via the internet 300 in accordance with a command from the control unit 22a of the control device 2. Further, sea level air pressure and air temperature at the installation location of the elevator apparatus 100 transmitted from the external server 200 are received via the internet 300.
The air pressure adjusting device 4 is a blower that adjusts the air pressure of the car 11 by supplying or discharging air, and is connected to the interface 21 of the control device 2 via an electric wire. The air pressure adjusting device 4 is as follows: in accordance with a command from the air pressure control unit 22b of the control device 2, the motor provided inside is rotated to supply air into the car 11 or discharge air from the inside of the car 11.
Next, the operation of the present embodiment will be described with reference to fig. 2 to 4. Fig. 2 is a flowchart showing control of the elevator apparatus 100 according to the present embodiment.
In step S1, the control unit 22a waits for the car 11 to determine a destination floor. The destination floor is determined by the user of the elevator apparatus 100 pressing the destination floor button. When the destination floor button is pressed and the destination floor is determined, the control unit 22a advances the process to step S2.
In step S2, the control unit 22a generates a speed command and stores the speed command in the storage unit 23. Then, the process advances to step S3. The speed command is a command to determine the moving speed of the car 11. Specifically, the command is a command to specify the number of revolutions per unit time of the motor provided in the drive device of the hoisting machine 14.
In the present embodiment, the movement of the car 11 is as follows: when the vehicle starts from the departure floor, the moving speed gradually increases, and when the vehicle reaches the highest speed, the vehicle moves at the highest speed by a predetermined distance, and thereafter, the vehicle stops at the destination floor while gradually decreasing the moving speed.
In step S3, the control unit 22a causes the communication device 3 to receive the sea level air pressure and the air temperature, and advances the process to step S4. Specifically, the control unit 22a causes the communication device 3 to output the sea level air pressure and the air temperature to the external server 200. The communication device 3 outputs an output command including the position information of the elevator apparatus 100 to the external server 200 via the internet 300. The external server 200 that received the output command extracts information of sea level air pressure and air temperature at the set position of the elevator apparatus 100 and transmits to the communication apparatus 3 via the internet 300. The communication device 3 receives information of sea level air pressure and air temperature transmitted from the external server 200. Then, the control unit 22a stores the information of the sea level air pressure and the air temperature received by the communication device 3 in the storage unit 23.
In step S4, the air pressure control unit 22b calculates an air pressure control mode. Step S4 will be described in detail with reference to fig. 3. In detail, step S4 is constituted by 4 steps of step S41 to step S44.
In step S41, the air pressure control unit 22b calculates the change in elevation of the car 11 based on the speed command stored in the storage unit 23 in step S2. That is, by integrating the moving speed of the car 11 determined by the speed command with time, how the elevation of the car 11 changes is calculated for each time period from the departure of the car 11 to the stop of the car at the destination floor. Then, the air pressure control unit 22b stores the change in elevation of the car 11 in the storage unit 23, and advances the process to step S42.
In step S42, the air pressure control unit 22b calculates an external air pressure change associated with the movement of the car 11 from the change in elevation of the car 11 stored in the storage unit 23 in step S41. The calculation of the external air pressure is performed according to the following equation 1.
[ 1]
Figure GDA0003388579960000051
In the above formula 1, P 1 [hP a ]The external air pressure of the car 11 is shown. In addition, P 0 [hP a ]Represents sea level air pressure, T a [℃]The temperature of the ground is expressed as the air temperature. In addition, h a [m]Representing T a Is a measurement of the elevation of the site. h [ m ]]Indicating the elevation at which the car 11 is present.
That is, the air pressure control unit 22b generates the T, which is substituted into the sea level air pressure and air temperature stored in the storage unit 23 in step S3 and stored in the storage unit 23, according to equation 1 a Is a formula for measuring the elevation of a place. Then, using this equation, an external air pressure change associated with the movement of the car 11, which is an air pressure change associated with the lifting of the car 11, is calculated from the change in elevation of the car 11. The air pressure control unit 22b stores the calculated change in the external air pressure associated with the movement of the car 11 in the storage unit 23, and advances the process to step S43.
An example of the change in the external air pressure caused by the movement of the car 11 when the car 11 is lowered is shown in a graph by P1 indicated by a solid line in fig. 4. The horizontal axis of the graph of fig. 4 represents time, and the vertical axis represents air pressure. P1 of fig. 4 represents the following case: regarding the change in the external air pressure accompanying the movement of the car 11, the air pressure gradually rises immediately after the departure, and the rising speed of the air pressure is again slowed down after the air pressure rises once in the middle until the car stops at the destination floor. The change in the external air pressure corresponds to a change in the speed of the car 11.
In step S43, the air pressure control unit 22b calculates a desired air pressure change in the car 11 from the change in the external air pressure associated with the movement of the car 11 stored in the storage unit 23 in step S42. The ideal air pressure change in the car 11 is an air pressure change such that the air pressure change in the car 11 is constant along with the movement of the car 11.
Specifically, the air pressure control unit 22b calculates the difference between the outside air pressure of the car 11 at the elevation of the departure floor of the car 11 stored in the storage unit 23 and the stop floor as the destination floor in step S42. Then, the difference in external air pressure is divided by the movement time of the car 11, thereby calculating an ideal air pressure change in the car 11 per unit time. Then, based on the ideal air pressure change in the car 11 per unit time, the ideal air pressure change in the car 11 at each time from the start to the stop during the movement of the car 11 is calculated. Then, the air pressure control unit 22b stores the calculated ideal air pressure change in the car 11 in the storage unit 23, and advances the process to step S44.
P2 indicated by a broken line in fig. 4 shows, like P1, an ideal change in the air pressure in the car 11 due to the movement of the car 11 when the car 11 is lowered. That is, the slope of P2 represents an ideal air pressure change in the car 11 per unit time.
In step S44, the air pressure control mode is calculated from the difference between the ideal air pressure change in the car 11 stored in the storage unit 23 in step S43 and the external air pressure change accompanying the movement of the car 11 stored in the storage unit 23 in step S42.
This will be specifically described with reference to fig. 4. When the car 11 starts the descending operation, the air pressure in the car 11 should ideally rise immediately and linearly as shown by P2. However, since the car 11 is operated to descend while gradually increasing the speed, if the air pressure is not adjusted, the air pressure in the car 11 becomes lower than ideal with a change in the external air pressure indicated by P1. Therefore, immediately after the departure, air pressure control is performed to supply air to the car 11 based on the difference between P2 and P1.
In this way, it is possible to calculate what air pressure adjustment is necessary at each time based on the ideal air pressure change in the car 11 and the external air pressure change accompanying the movement of the car 11. As shown in fig. 4, during the descending operation, it is necessary to supply air to the car 11, and after the time at which P1 and P2 intersect in the middle, it is necessary to discharge air from the car 11. Further, when the difference between the slope of the ideal air pressure change in the car 11 and the slope of the external air pressure change accompanying the movement of the car 11 is large, it is necessary to supply or discharge air with a stronger output.
The air pressure control unit 22b stores a difference between the ideal air pressure change in the car 11 and the external air pressure change accompanying the movement of the car 11 in the storage unit 23 as an air pressure control pattern. Then, the air pressure control unit 22b advances the process to step S5. If the air pressure control is performed in accordance with this air pressure control mode, the air pressure inside the car 11 can be controlled so that the air pressure variation per unit time falls within a predetermined range.
In step S5, the air pressure control unit 22b outputs an air pressure control command to the air pressure adjusting device 4 via the interface 21 to control the air pressure inside the car 11 so that the air pressure change in the car 11 per unit time falls within a predetermined range. Specifically, the air pressure control unit 22b converts the air pressure control pattern stored in the storage unit 23 in step S44 into the number of rotations of the motor of the air pressure regulator 4, and outputs the converted number of rotations to the air pressure regulator 4 as an air pressure control command. Then, the air pressure control unit 22b returns the process to step S1. The air pressure adjusting device 4 adjusts the air pressure in the car 11 in accordance with the air pressure control command output from the air pressure control unit 22b.
According to the present embodiment described above, it is possible to update information of sea level air pressure and air temperature used for calculation of an external air pressure change accompanying movement of the car 11. Therefore, even when the sea level air pressure and the air temperature vary greatly, the air pressure can be controlled with high accuracy. Therefore, the possibility of giving the passengers a sense of discomfort is reduced.
In addition, in the present embodiment, since information on sea level air pressure and air temperature is obtained from weather forecast via the internet, it is not necessary to newly install a barometer and a thermometer. In the present embodiment, each time a destination floor is determined, information on sea level air pressure and air temperature is received. Therefore, the air pressure can be controlled more accurately using the latest information.
In addition, in the present embodiment, since the air pressure is controlled according to the actual sea level air pressure or air temperature, when the required air pressure adjustment amount is small, it is possible to suppress wasteful air pressure adjustment.
Embodiment 2.
The elevator apparatus 100 of the present embodiment controls the air pressure inside the car 11 by adjusting the speed of the car 11 so that the air pressure change inside the car 11 per unit time falls within a predetermined range. Hereinafter, differences from embodiment 1 will be mainly described.
This embodiment has the same structure as embodiment 1. The operation of the present embodiment will be described with reference to fig. 5 to 7. In fig. 5 to 7, the same reference numerals as in fig. 2 and 4 denote the same or equivalent parts.
In embodiment 1, the air pressure control unit 22b advances the process to step S5 after step S4, but in the present embodiment, advances the process to step S6. In step S6, the air pressure control unit 22b determines whether or not the slope of the ideal air pressure change in the car 11 calculated in step S43 is equal to or smaller than a predetermined value. In the present embodiment, the predetermined slope is an upper limit of the air pressure change which is found experimentally and which is less likely to give a sense of discomfort to the passenger.
That is, it is determined whether or not the air pressure inside the car 11 can be controlled so that the air pressure change falls within a predetermined range by the air pressure adjustment of the car 11 by the air pressure adjustment device 4. When the pressure is equal to or lower than the predetermined value, the air pressure control unit 22b advances the process to step S5. If the pressure is not equal to or less than the predetermined value, that is, if the pressure change associated with the lifting of the car 11 is greater than the predetermined range, the pressure control unit 22b advances the process to step S6.
Whether or not the slope of the ideal air pressure change in the car 11 is equal to or smaller than a predetermined value varies depending on the climate. Like fig. 4, P1 indicated by a solid line in fig. 6 is an example of an external air pressure change accompanying movement of the car 11 when the car 11 is lowered in a graph. P1 in fig. 6 is a change in the external air pressure on a day where the sea level air pressure is high and the air temperature is low. The elevation h [ m ] existing with the car according to formula 1]External air pressure P accompanying the change of (a) 1 [hPa]Variation of (2) in sea level air pressure P 0 [hPa]Higher air temperature Ta DEG C]Lower time-varying increases.
Therefore, the slope of the ideal air pressure change in the car 11 calculated in step S43 is also the sea level air pressure P 0 [hPa]Higher air temperature Ta[℃]Lower time-varying increases. P2 indicated by a broken line in fig. 6 represents an ideal air pressure change in the car 11 calculated from the external air pressure change accompanying the movement of the car 11 calculated in step S42 when the sea level air pressure is high and the air temperature is low.
That is, in step S6, the air pressure control unit 22b determines whether the slope of P2 is equal to or smaller than a predetermined value. A condition that is not equal to or less than the predetermined value means that, even if the air pressure in the car 11 is desirably changed, the air pressure in the car 11 is adjusted by the air pressure adjusting device 4, and the air pressure change in the car 11 does not fall within a predetermined range.
In step S7, the air pressure control unit 22b resets the air pressure control mode stored in the storage unit 23 in step S44, and advances the process to step S8. Step S7 will be described in detail with reference to fig. 7. In detail, step S7 is constituted by 4 steps of step S71 to step S74.
In step S71, the air pressure control unit 22b calculates an ideal air pressure change and a movement time in the car 11 after the speed adjustment based on the difference between the outside air pressures at the departure floor and the destination floor calculated in step S42 and the upper limit of the air pressure change in the car 11. Then, the air pressure control unit 22b stores the calculated ideal air pressure change and the movement time in the car 11 after the speed adjustment in the storage unit 23, and advances the process to step S72.
In the present embodiment, the upper limit of the change in the air pressure in the car 11 is the upper limit of the change in the air pressure for comparison in step S6, which is less likely to give the passengers discomfort. P3 indicated by a one-dot chain line in fig. 6 indicates an ideal air pressure change in the car 11 when the upper limit of the air pressure change in the car 11 is set as a slope. That is, the distance in the time axis direction at the intersection point of P1 and P3, which shows the external air pressure change accompanying the movement of the car 11, represents the movement time after the speed adjustment.
In step S72, the air pressure control unit 22b calculates the change in elevation of the car 11 at each time when the car 11 is moved from the departure floor to the destination floor at the movement time calculated in step S71. That is, at this time, the moving speed of the car 11 at each time is also determined. Then, the air pressure control unit 22b stores the calculated elevation change and the moving speed of the car 11 in the storage unit 23, and advances the process to step S73.
In step S73, the air pressure control unit 22b calculates an external air pressure change associated with the movement of the car 11 after the speed adjustment, using equation 1, based on the elevation change stored in the storage unit 23, as in step S42. Then, the air pressure control unit 22b stores the calculated external air pressure change in the storage unit 23, and advances the process to step S74. P4 indicated by a two-dot chain line in fig. 6 shows a change in external air pressure according to the movement of the car 11 after the speed adjustment.
In step S74, the air pressure control unit 22b calculates an air pressure control pattern from the difference between the ideal air pressure change in the car 11 after the speed adjustment stored in the storage unit 23 in step S71 and the external air pressure change after the speed adjustment stored in the storage unit 23 in step S73, as in step S44. Then, the air pressure control unit 22b stores the calculated air pressure control pattern in the storage unit 23, and advances the process to step S8.
In step S8, the air pressure control unit 22b corrects the speed command based on the speed-adjusted movement speed of the car 11 calculated in step S72. Then, the air pressure control unit 22b stores the corrected speed command in the storage unit 23, and advances the process to step S5. The corrected speed command is used by the control unit 22a for controlling the car 11.
As described above, according to the present embodiment, in the air pressure adjustment by the air pressure adjustment device 4, when the sea level air pressure is high or the air temperature is low or the gradient of the air pressure change is large, the hoisting machine 14 is controlled so that the moving speed of the car 11 is reduced. That is, when the air pressure adjusting device 4 cannot control the air pressure inside the car 11 so that the air pressure change falls within the predetermined range, the air pressure change can be brought within the predetermined range by changing the moving speed of the car 11.
As in the present embodiment, when the moving speed of the car 11 is changed according to the weather, it is particularly important to accurately calculate the change in the external air pressure accompanying the movement of the car 11 and to accurately perform air pressure control. This is because, when the outside air pressure of the car 11 cannot be accurately calculated, it is necessary to make a margin for changing the moving speed so as not to give a sense of discomfort to the passengers. Therefore, the speed adjustment is performed even when the speed adjustment is not originally required, and the conveying efficiency is lowered.
The embodiment has been described above, but the present invention is not limited to this embodiment, and a modified example is shown below.
In the embodiment, the communication device 3 receives both the sea level air pressure and the air temperature, and the air pressure control unit 22b calculates the external air pressure with high accuracy. However, in order to solve the problem, it is sufficient to receive at least one of them and calculate the external air pressure. This is because, even if one of the fluctuations is reflected in the calculation of the external air pressure and the other is set to be constant, the air pressure change can be calculated with higher accuracy than in the conventional case.
In the embodiment, the air pressure control unit 22b calculates an external air pressure change associated with the movement of the car 11 as an air pressure change associated with the lifting of the car 11. However, in order to solve the problem, any device may be used as long as it calculates the change in air pressure associated with the lifting of the car 11, and for example, it may be a device that calculates the air pressure difference between the departure floor and the destination floor, or it may calculate the change in external air pressure associated with the movement of the car 11 for a part of the section in the middle of the movement of the car 11.
In embodiment 2, when the air pressure adjustment by the air pressure adjusting device 4 is insufficient, the movement speed is adjusted. However, in order to solve the problem, the air pressure inside the car 11 may be controlled so that the air pressure change falls within a predetermined range by making the moving speed of the car 11 slower than the normal moving speed, irrespective of whether the air pressure adjustment by the air pressure adjusting device 4 is insufficient.

Claims (3)

1. An elevator apparatus, wherein the elevator apparatus comprises:
a car that moves up and down in a hoistway;
a receiving device for receiving at least one of sea level air pressure and air temperature via a network; and
an air pressure control unit that calculates an air pressure change associated with the lifting of the car based on at least one of the sea level air pressure and the air temperature received by the receiving device, and controls the air pressure inside the car so that the air pressure change per unit time falls within a predetermined range,
when the calculated change in air pressure associated with the lifting of the car is greater than a predetermined range, the air pressure control unit controls the air pressure in the car so that the change in air pressure per unit time falls within the predetermined range by making the moving speed of the car slower than a normal moving speed.
2. Elevator arrangement according to claim 1, characterized in that,
the elevator apparatus further comprises an air pressure adjusting device for adjusting the air pressure of the car by supplying or discharging air,
the air pressure control unit controls the air pressure inside the car by controlling the air pressure adjusting device so that the air pressure change per unit time is within a predetermined range.
3. Elevator arrangement according to claim 2, characterized in that,
the air pressure control unit controls the air pressure in the car by changing the moving speed of the car so that the air pressure change per unit time is within a predetermined range when the air pressure adjustment of the car by the air pressure adjustment device is not capable of controlling the air pressure in the car so that the air pressure change per unit time is within a predetermined range.
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