JPH04112182A - Door controller for elevator - Google Patents

Abstract

PURPOSE:To surely open a door to a perfect opening position by correcting the standard value at the opened edge part of the speed standard in the direction for increasing the door opening force, when the perfect opening of the door is not detected, even if the time measured from the start of the door opening exceeds a standard value for judging the opening anomaly of the door. CONSTITUTION:An opening signal detecting means 21 detects the start of the door opening on the basis of the output signal of an elevator control panel 1. A time measuring means 22 is connected with the door opening signal detecting means 21, and the lapse time from the start of the door opening is measured. Even if the measured time exceeds a standard value for judging the anomaly in door opening, if a door position detecting means 23 does not detect the perfect opening of the door, the standard value at the opening edge part of the speed standard is corrected in the direction for increasing the opening force of the door. Accordingly, even if the traveling resistance of the door increases slightly, the door can be opened surely to the perfect opening position.

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Industrial Application Field) The present invention relates to an elevator door control device that opens and closes a door according to a speed criterion whose value decreases at the open end.

(Prior art) In order to shorten the opening/closing time of the door, elevators have an acceleration region where the speed is accelerated at the beginning of opening/closing, a constant speed region where the speed remains constant after acceleration is completed, and a deceleration region where the speed is decelerated near the opening/closing end. The opening and closing of the door is controlled according to a speed standard that has been determined to exist.

Among these, the torque of the door motor is large in the acceleration region and the constant speed region, so even if the running resistance of the door changes somewhat, it does not affect the movement. However, in the deceleration region, the torque of the door motor is small in order to reduce the speed.
Easily affected by changes in running resistance.

Therefore, if a foreign object becomes trapped in this deceleration area or the door panel becomes warped or deformed, the running resistance increases.
The door may move slowly or stop moving, leading to a malfunction.

Such failures often occur when the door is closed, and various proposals have been made to solve this problem, but the reality is that little countermeasures have been taken when the door is opened, which is relatively unlikely to occur.

Therefore, door opening control related to the present invention will be explained below.

FIG. 6 is a block diagram showing the configuration of a conventional elevator door control device that opens and closes the door according to speed standards. This means that when the signal from the elevator control panel 1 and the signal from the door position detector 9 that detects the door position are input to the door control microcomputer 2, the door control microcomputer 2 processes these signals, and according to the processing results. A door motor drive device 7 controls a door motor 8. Note that the door control microcomputer 2 includes an input device 3, a CPU 4, a memory device 5, and an output device 6.

In the case of normal door opening, when a door open signal is input from the elevator control panel 1 to the input device 3, the CPU
4 calculates a door speed reference Vref which linearly increases and then becomes constant from a certain point, as shown in FIG. The door motor drive device 7 supplies the door motor 8 with a voltage corresponding to the speed reference ref.

This allows the door to move according to the speed standard ■ref.
Reach the maximum speed indicated by . When approaching the open end of the door, switches SWI, SW2 . Based on the status signals of SW3 and SW4, the door position detector 9 provides respective door position signals to the input device 3.

The CPU 4 sets the speed setting value P when the position signal corresponding to turning on the switch SWI is input. , 1, switch SW2
When the position signal corresponding to ON is input, the speed setting value P. p2 is the speed setting value P when a position signal corresponding to turning on the switch SW'3 is input. .

As a result, the door is decelerated, and when the door is fully opened, a position signal corresponding to turning on the switch SW4 is applied from the door position detector 9 to the input device 3.

(Problems to be Solved by the Invention) In the above-mentioned door control device, the speed near the opening end of the door after the switch SW3 is turned on is made considerably small in order to suppress the collision noise and vibration of the door. Therefore, in this region, even if the running resistance increases to some extent, the door may stop midway. In spite of this, no countermeasures have been taken in the conventional devices, and there has been a problem in that the elevator may break down simply due to an increase in running resistance.

This invention was made to solve the above-mentioned problems, and its purpose is to provide an elevator door control device that can reliably open the door to the fully open position even if the running resistance of the door increases somewhat. shall be.

[Structure of the invention]

(Means for solving problems).

The present invention provides a door control device for an elevator that opens and closes the door according to a speed standard whose value decreases at the open end. means for measuring the elapsed time, and when the fully opened door is not detected even if the measured time exceeds a reference value for determining door opening abnormality, a reference value for the opening end of the speed reference is provided in the direction of increasing the door opening force; The present invention is characterized by comprising means for correcting the value.

(Function) In this invention, when the door does not fully open even though the elapsed time from the start of opening of the door exceeds the reference value for determining abnormality in opening of the door, the opening end of the speed standard is adjusted in the direction of increasing the opening force of the door. Since the reference value of is corrected, the door can be reliably opened to the fully open position even if the running resistance of the door increases somewhat.

(Embodiment) FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and in the figure, the same reference numerals as in FIG. 5 indicate the same elements. Here, the open signal detection means 21 detects the start of door opening based on the output signal of the elevator control panel 1. A time measuring means 22 is also connected to the door open signal detecting means 21, and measures the elapsed time T from the start of the door opening.

Based on the output signals from the knob and door position detector 9, the door position detecting means 23 confirms whether the door is fully open and outputs a fully open confirmation signal. In addition, the storage means 24 also stores the standard door opening time T1, the setting margin α, the increase rate A, and the speed setting value P.
,P,,P is stored opl Op= op
3 It has been done. Further, the multiplication means 25 performs the above-described o
pL op2 op3 While calculating the speed reference vref, the door opening standard time T in the storage means 24, the setting margin α (α>1), and the increased weight A (
α〉1), speed setting value P. , 3 and enter T × α, P
o, s x A is executed and output together with the elapsed time T. Further, the comparison means 26 compares T outputted from the multiplication means 25 with TSXα, and if the door position detection means 23 outputs a fully open confirmation signal and the state of T>T Standard V. , P for calculating . p3 to P. The setting is changed to p3×A, and furthermore, P and P of the storage means 24 are set.

Compare with p2, Pop3p3 When 〉P　, it returns to Pl))3.

The thus calculated speed reference V, 8. A voltage corresponding to the voltage is supplied to the door motor 8.

Since these functions can be realized as they are by the door control microcomputer shown in FIG. 6, a description of the hardware configuration will be omitted, and the specific operation of the CPU 4 will be described according to the flowchart of FIG. 2.

First, a door open signal is detected from the signal of the elevator control panel 1 (step 101), and then the elapsed time T from the door opening is measured (step 102). Then, during the measurement of the elapsed time T, it is determined whether the door is fully opened or not by checking whether the above-mentioned switch SW4 is turned on (step 103).

Until the door opening is confirmed by this process, the time T from the start of door opening and the preset standard door opening time T
T x S multiplied by the setting margin α
In step 104), while T≦T×α, the full-open confirmation and comparison operations are repeated.

Next, if it becomes TNT Xα, the rate base $V
Speed setting value P at the open end of. , 3 multiplied by the rate of increase Aef to obtain P in the speed reference Vref'. , 3 are changed to the values of Po, 3XA, and the speed reference vrer is reset (step 105). Next, the speed setting value P is multiplied by the increase rate A. p3 and the speed setting value P corresponding to the opening degree of the previous stage. , 2 (step 10G); P
If o, 3≦Pop2, reset the timer that measures the elapsed time T from the start of the door opening step 107);
Repeat the above process.

Next, if it is determined that Pop3 > Pop2, P
The speed setting value, which has a size of op3×A, is the initial P. , return to step 3 (step 108), and end the door opening process (step 109).

In this way, the speed reference value P. FIG. 3 shows how the speed reference Vr8f is corrected by sequentially increasing p3.

Through these processes, each function shown in the block diagram in Fig. 1 is realized, and T ×
Every time the time α elapses, the speed setting value P of the open end is changed. , the operation of increasing the force to open the door by multiplying 3 by A is repeated,
Speed setting value P. , 3 is the speed setting value P corresponding to the opening degree of the preceding stage. The initial value P is reached when p2 is exceeded. Returned to p3.

Thus, according to this embodiment, even if the running resistance increases due to something getting caught in the door seal or the door deforming due to aging, the door can be fully opened against this, and the elevator can be opened. Breakdowns can be prevented.

In addition, in the above embodiment, the speed set value at the opening end was increased while the door was left open halfway, or T ×
The door may be closed once every time α elapses, and then the speed setting value of the opening end may be increased to open the door. This process is shown in FIG. 5 (step 1).
11 to 119).

Furthermore, in the above embodiment, the speed setting value P is set every time the fixed time T×α elapses. Although p3 is multiplied by A, it is also possible to set these times and increase rates to be small so that the speed standard corresponds to the magnitude of running resistance.

In this case, as shown in the flowchart of FIG.
> T
is measured (step 125). Next, it is determined whether the switch SW4 is in the on state (step 126), and if it is not in the on state,
Whether T exceeds the preset value T
It is confirmed whether or not there is an ops (step 127).

Here, if T exceeds T, op
ops Po, set 3-Pop3×A'(A>A' 〉1) (step 12g), then set Pop3 〉P
Step 129) to determine whether it is op2 or not.
If Po,3≦Pop2, the timer for measuring To is reset (step 130), and these processes are repeated.

Next, if it is determined that Pop3>Pop2, the speed setting value is set to the initial P. , step 130),
The door opening process ends (step 131).

〔Effect of the invention〕

As is clear from the above description, according to the present invention, there are provided a means for detecting the start and full opening of a door, a means for measuring elapsed time from the start of opening of the door, and a means for detecting an elapsed time from the start of opening of the door, and a means for detecting an abnormality in the opening of the door. When the door is not fully opened even after exceeding the reference value for determining the speed, the system is equipped with a means for correcting the base heavy chain at the opening end of the speed standard in the direction of increasing the door opening force, so that the running resistance of the door is reduced. Even if the number increases slightly, the door can be reliably opened to the fully open position.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
Figure 2 is a flowchart showing the processing procedure when the main functions of the same embodiment are provided in a microcomputer;
The figure is a diagram showing the relationship between door position and speed to explain the operation of the same embodiment, and FIGS. 4 and 5 are flowcharts showing the processing procedure of the microcomputer corresponding to other embodiments. , FIG. 6 is a block diagram showing the hardware configuration of a conventional elevator door control device, and FIG. 7 is a block diagram showing the hardware configuration of a conventional elevator door control device.
The figure is a flow chart for explaining the operation of this device. DESCRIPTION OF SYMBOLS 1...Elevator control panel, 2...Door control microcomputer, 7...Door electric motor drive device, 8...Door electric motor,
9... Door position detector, 21... Door open signal detecting means, 22... Time measuring means, 23... Door position detecting means, 24... Multiplying means, 25... Comparing means, 26
... Storage means, 27... Setting means. Shade 1

Claims (1)

[Claims] In an elevator door control device that opens and closes the door according to a speed standard whose value decreases at the open end, there is a means for detecting the start of opening of the door, a means for detecting full opening of the door, and a means for measuring the elapsed time from the start of opening of the door. and correcting the reference value of the opening end of the speed reference in the direction of increasing the door opening force when the fully opened door is not detected even when the measured time exceeds a reference value for determining abnormality in door opening. An elevator door control device comprising means.