JP4732578B2 - Elevator control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator control device including a terminal floor deceleration stop device.
[0002]
[Prior art]
The elevator knows the position of the elevator car by inputting pulses from a pulse generator attached to the motor of the hoist or the governor shaft to the microcomputer in the control device.
[0003]
The pulse representing the position of the elevator car may cause a deviation. The cause of the deviation is that the elevator car is displaced by manual release of the motor brake when the elevator power is off during inspection and maintenance, etc. For example, the pulse may be lost. Conventionally, in the case of normal operation when a deviation occurs, after carrying out rescue operation on the nearest floor, the car is moved to the final floor (reference position) by low-speed operation to grasp the absolute reference position The shifted pulse is corrected by performing the operation.
[0004]
[Problems to be solved by the invention]
In the operation for performing the pulse correction, the control device determines that the position of the elevator car is indeterminate and moves the car to the final floor by low-speed operation in consideration of safety.
[0005]
However, as the elevator becomes a higher floor, the operation described above has a problem that it takes a very long time to move to the final floor and perform pulse correction.
[0006]
This also takes time until the next service for normal operation is performed, which gives an unnecessary waiting time to the elevator user.
[0007]
The present invention has been made to solve such conventional problems, and an elevator capable of shortening the time for moving a car to a terminal floor and performing pulse correction faster, safely and accurately. An object of the present invention is to provide a control device.
[0008]
[Means for Solving the Problems]
The elevator control device according to the present invention includes a terminal floor deceleration stop device that decelerates and stops the car to the terminal floor by input signals from a plurality of position input switches provided near the terminal floor of the hoistway. In the elevator control device, when performing pulse correction indicating the position of the elevator car, a plurality of position input switches corresponding to the plurality of position input switches calculated using the input signal of the position input switch in the terminal floor deceleration stop device It is provided with control means for controlling the car to operate at one of the speed patterns below the normal rated speed , and the control means is the operation before performing the operation for pulse correction and last. In the terminal floor reduction gear of the present invention, holding means for holding an input signal from the position input switch including the direction of operation of the car, Based on the input signal from the position input switch, the remaining distance calculation means for calculating the remaining distance to the stop at the final floor, the speed pattern is switched by the input signal from the position input switch held by the holding means, and the remaining distance calculation Speed pattern calculation means for calculating the rated speed and deceleration position for driving the car to the final floor in the shortest time using the remaining distance calculated by the means and creating a speed pattern It is characterized by being.
[0009]
According to the present invention, when an operation for performing pulse correction occurs, the car can be moved to the terminal floor (reference floor) more quickly, safely and accurately.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0017]
The configuration of one embodiment of the present invention will be described with reference to FIG.
[0018]
As an elevator system, a rope type elevator is taken as an example.
[0019]
As shown in FIG. 1, the car 1 is connected to the counterweight 3 via a rope 4 wound around the hoisting machine 2, and the hoisting machine 2 is driven to be suspended from the counterweight 3. The mating length is changed and it moves up and down. The control device 30 that controls the operation of the car 1 controls the motor of the hoisting machine 2 by controlling the inverter device 20 connected to the power source 21. The output signal of the motor speed detector (pulse generator) 5 provided in the hoist 2, the output signal of the car speed detector 6 provided in the car 1, and the vicinity of each terminal floor above and below the hoistway The output signals of the position input switches 1SD to 24SD in the terminal floor deceleration stop apparatus are supplied to the control device 30, and the control device 30 is configured to control the operation of the car 1 using these output signals. .
[0020]
FIG. 2 shows a more specific configuration of the control device 30 in the present embodiment. Finally, an input signal (as an input signal) from the position input switch in the terminal floor deceleration stop device in the operation before entering the pulse correction operation. Is a position input information holding means 31 for holding the position information of the car including the driving direction of the car) in the control device 30, and input signals from the position input switches 1SD to 24SD for the terminal floor deceleration stop. The position input means 32 at the time of the car traveling for capturing, the input signal from the position input means 32 at the time of the car traveling and the output of the position input information holding means 31 are inputted, and the remaining distance until the terminal floor stop is calculated. Remaining distance calculation means 33, position input abnormality determination processing means 34 for determining abnormality of an input signal from the position input switch during traveling from the position input means 32 during traveling of the car. The output of the remaining distance calculation means 33 and the output of the position input abnormality determination processing means 34 are input, and the speed pattern calculation means 35 for calculating the rated speed and the operation speed pattern which is the calculation result of the speed pattern calculation means 35 is displayed. An operation speed pattern output means 36 for outputting is provided.
[0021]
Next, the operation of the pulse correction operation in this embodiment will be described with reference to FIGS.
[0022]
FIG. 3 is a flowchart showing the operation of the pulse correction operation. In the following description, numbers 1), 2),... With parentheses correspond to numbers 1), 2),.
[0023]
When the pulse deviation is detected and the pulse correction operation is started, the following conditions are checked first.
[0024]
1) Check the input signal from the position input switch that was last input before starting the pulse correction operation. That is, it is determined whether or not the input signal held in the position input information holding means 31 is an input from the position input switch (position input switch 23SD or position input switch 24SD) farthest from the terminal floor (step S41). .
[0025]
When the signal is an input signal from a position input switch farthest from the terminal floor (for example, in FIG. 1, the terminal floor is the bottom floor, and the input signal from the position input switch 23SD is stored as input signal information. If there is a rising operation, the car is positioned above the position input switch 23SD and can be determined to be positioned between the position input switch 23SD and the position input 24SD). There is a pattern (b) in the case where the signal is not in the state (a car is present between the position input switches 1SD to 23SD or between the position input switches 2SD to 24SD).
[0026]
Here, in the position input switch arrangement of the position input switches 1SD to 23SD or the position input switches 2SD to 24SD, since the position input switch arrangement interval is set finely, it is stopped before the pulse correction operation. Thus, the car position can be substantially detected from the held input signal information (step S45). In addition, since there is no position input switch between the position input switch 23SD and the position input switch 24SD, the input signal cannot be detected by the position input switch 23SD or the position input switch 24SD after the correction operation. I can't find the position of the car.
[0027]
2) When the position of the car is between the position input switch 23SD and the position input switch 24SD, until the position input switch 23SD is turned on next time or the position input switch 24SD is turned on (step S44), that is, the position during running Until the input signal from the position input switch 23SD or the position input switch 24SD is taken in by the input means 32, the speed pattern calculating means 35 is operated so as to operate at the first rated speed (a value set below the normal rated speed). Then, the speed pattern is calculated (step S42), and this is output from the operation speed pattern output means 36 (step S43) to perform the operation.
[0028]
3) When the position input switch 23SD or the position input switch 24SD is turned on (step S44), the car position is determined (step S45).
[0029]
4) Since the position of the car is found, the second rated speed (set below the normal rated speed) for moving the car in the shortest distance based on the remaining distance to the final floor stop calculated by the remaining distance calculating means 33 The speed pattern is calculated by the speed pattern calculating means 35 starting from the deceleration point (step S46). At this time, the pattern is calculated so that it can be smoothly connected to the speed pattern obtained in 2).
[0030]
5) By outputting the calculated speed pattern (acceleration to steady) by the driving speed pattern output means 36 (step S47), the inverter device 20 is controlled to move the car 1 and stop it at the terminal floor. The speed pattern is decelerated (step S52) by the input of the deceleration point position input switch (step S51).
[0031]
6) Decelerate to near the terminal floor or to the terminal floor (step S53), perform pulse correction processing after stopping (step S54), and return to normal operation.
[0032]
7) When the position input abnormality determination processing means 34 (step S48) determines that the input signal from the position input switch is abnormal (step S49), since it is no longer accurate position information, the speed pattern calculation means 35 The running pattern is switched to the low speed pattern (step S50), and the operation is continued to the terminal floor.
[0033]
The position input abnormality determination processing means 34 compares the transition of the operating speed pattern and the input signal from the acquired position input switch to calculate the consistency, and the acquired position input is It is determined that the position input is abnormal when the value of the current position estimated from the change of the driving speed pattern is a value far from the predetermined value.
[0034]
FIG. 4 shows velocity patterns in the patterns (a) and (b) in the description 1).
[0035]
The pattern (a) represents the ascending operation when the car is located between the position input switch 23SD and the position input switch 24SD, and the speed of the first rated speed until the position input switch 24SD is input. The driving is performed in the pattern v1, and then the speed pattern v2 of the second rated speed is switched toward the terminal floor.
[0036]
In the pattern (b), the car is accelerated from the stop position because the car is positioned between the position input switches 1SD to 23SD or between the position input switches 2SD to 24SD, and the rated speed ( Select a parameter such as deceleration point) from the preset parameters, finally determine the speed pattern, and perform the operation up to the final floor stop. Thereby, for example, one of a plurality of speed patterns such as speed patterns v3 and v4 indicated by dotted lines may be calculated.
[0037]
As described above, according to the present embodiment, until the final floor stop in the pulse correction operation without adding a special device by calculating the optimum speed pattern using the position input information of the final floor deceleration stop device. The vehicle can be moved to the final floor (reference floor) more quickly, safely and accurately.
[0038]
【The invention's effect】
As described above, according to the elevator control device of the present invention, by calculating the optimum speed pattern using the position input of the terminal floor deceleration stop device, the time until the terminal floor stop during the pulse correction operation can be reduced. It can be shortened. As a result, the effect of shortening the time for pulse correction operation increases as the floor becomes higher, and the time to return to normal operation can be greatly shortened.
[Brief description of the drawings]
FIG. 1 is a diagram showing a schematic configuration of an elevator control device according to an embodiment of the present invention.
FIG. 2 is a diagram showing a more specific configuration of the control device shown in FIG. 1;
FIG. 3 is a flowchart showing the operation of one embodiment of the present invention.
FIG. 4 is a diagram showing a speed pattern in one embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Car 2 ... Hoisting machine 3 ... Counterweight 4 ... Rope 5 ... Motor speed detector (pulse generator)
6 ... Car speed detectors 1SD to 24SD ... Terminal floor deceleration position input switch 20 ... Inverter device 21 ... Power supply 30 ... Control device 31 ... Position input information holding means 32 ... Position input means 33 during travel ... Remaining distance calculation means 34 ... Position input abnormality determination processing means 35 ... speed pattern calculation means 36 ... driving speed pattern output means

Claims (1)

In an elevator control device having an end floor deceleration stop device for decelerating and stopping a car to a terminal floor by input signals from a plurality of position input switches provided near the terminal floor of a hoistway, the elevator car When performing pulse correction that represents the position of the terminal, a speed pattern of a plurality of normal rated speeds or less corresponding to the plurality of position input switches calculated using an input signal of the position input switch in the terminal floor deceleration stop device Control means for controlling to drive the car at one of the speed patterns ,
The control means is an operation before performing an operation for pulse correction, and a holding means for holding an input signal from a position input switch including a driving direction of a car in the final terminal floor speed reducer, A remaining distance calculating means for calculating a remaining distance to the terminal floor stop based on an input signal from a position input switch in the terminal floor deceleration stop device, and a speed pattern by an input signal from the position input switch held by the holding means Speed to create a speed pattern by calculating the rated speed and deceleration position for driving the car to the final floor in the shortest time using the remaining distance calculated by the remaining distance calculating means An elevator control device comprising a pattern calculation means .

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