JPH0780662B2 - Elevator door controls - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door control device, and more particularly, to an improved elevator door control device capable of detecting a failure of a door deceleration start point detection means or processing thereafter. Regarding

[Conventional technology]

In the conventional device, as described in Japanese Utility Model Laid-Open No. 60-162572, when the position switch output signal for generating a predetermined speed pattern does not satisfy a predetermined condition when the door is fully opened, the position switch fails. Therefore, the opening / closing speed of the door was limited to a certain value.

[Problems to be Solved by the Invention]

The above-mentioned prior art is to detect the operation of the position switch, that is, to determine whether the position switch is on or off. Therefore, even if the position where the position switch is installed is wrong,
There is a problem that it is not judged as abnormal. This leads to a shift in the position where the speed pattern is generated due to the operation of the position switch, and in particular, when the installation position of the position switch near the closed end of the door is closer to the closed end than the normal position, the door does not slow down completely. It is dangerous because it collides with the edge and gives passengers a sense of fear, and when it is pinched, the impact is great.

In addition, the operation state of the position switch is determined when the door is fully opened or closed, and the first opening or closing after the switch failure causes the door to run with the switch failure. Sometimes there is the problem of the door not slowing down and endangering passengers.

An object of the present invention is to provide a door control device capable of detecting installation failure or operation failure of a position detection switch, reporting the failure, or ensuring safety.

[Means for Solving the Problems]

According to the present invention, the means for detecting the current position of the door by a signal generated according to the rotation of the door motor, and the current position detection corresponding to the position of the door deceleration start point detecting means based on the data corresponding to the frontage of the door. When the output of the means for storing the predetermined output value of the means and the current position detection means when the door is opened and closed reaches the predetermined output value, the door deceleration start point detection means does not operate, and an abnormality occurs. Is provided, or means for decelerating the door motor is provided.

[Action]

In the actual opening and closing of the door, the operating position of the deceleration position detection switch is stored, compared with the current position detection output, and when the deceleration position detection switch does not operate even after passing the desired position, it is judged that the switch is abnormal. Can be notified or the door can be decelerated to prevent a collision with the open / close end.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a block diagram showing the overall structure of the present invention.

As shown in FIG. 1, the elevator door 21 is supported by the door rail 22, and is connected to the strip body 18 at the connecting portion 23 with the strip body 18.
Is the rotating body 20 installed at both ends of the elevator car entrance
The rotating body 20 is connected to the electric motor (hereinafter referred to as a motor) 12 and the rotating body 19 by a strip, and the motor 12 is energized.
The rotary motion of the motor 12 is converted into the horizontal motion of the door 21,
It opens and closes 21.

At the elevator car entrance / exit, an open end detection switch 13 (hereinafter referred to as OLS) that detects the open end of the door 21 detects a deceleration start position of the door when the door is opened.
(Hereinafter referred to as OSD), the closed end detection switch 16 (hereinafter referred to as CLS) that detects the closed end of the door 21, and the closing deceleration start point detection switch 15 (hereinafter referred to as CLS) that detects the door deceleration start position when the door is closed.
CSD) is installed, and the cam 17 for switch operation is installed on the door 21.
The switch is mounted so as to operate in synchronism with the position of the door 21, and the deceleration start position of the door and the open end and closed end positions are detected. The door control device supplies a DC power to the motor 12 that drives the door, the motor drive element 9 that drives and controls the motor 12, the motor 12, and the motor drive element 9.
Single-phase AC power supply 6, diode bridge 7 for full-wave rectification, smoothing capacitor 8, base drive circuit 4 for controlling ignition of motor drive element 9, and peripherals of microcomputers MPU1 and MPU1 for controlling base drive circuit 4. Is a device
It consists of ROM2, RAM3 and input / output buffer (I / O) 5, and
It is attached to the motor 12, detects the rotation speed of the motor 12,
Speed detection means 11 for giving a rotation speed signal detected to the MPU 12 via the input / output buffer 5, operation signals of CLS, CSD, OLS, OSD, a door opening command signal 102 output from the elevator controller 10, and a closing command. Send the command signal 101 through the I / O buffer to
Give a signal to PU1. Further, the signals D0, D1, D2 corresponding to the frontage data of the door are output from the elevator control device 10,
A signal is given to MPU1 via the input / output buffer. It is composed of these input / output signals.

FIG. 2 shows an outline of door opening / closing control by a door speed curve, which will be described below.

First, when the door is first opened, the elevator control device 10 outputs an open command signal 102, and when the MPU1 receives this, () M
PU1 controls the door opening. First, by raising the speed command value for the motor 12 in the door opening direction, the base drive circuit 4 fires the motor drive element so that the motor rotates in the door opening direction, and applies a voltage to the motor 12. Detailed description of the ignition control is omitted. By applying a voltage to the motor 12, the motor 12 rotates in the door opening direction and the door starts to open. At this time, the MPU 1 detects the speed of the door by the output signal of the rotation speed detecting means 11 of the motor 12, and compares it with the speed command. Based on this result, the base drive circuit 4 is controlled and the point of the drive element of the motor 12 is controlled. By controlling the arc, speed feedback control is performed so that the rotation speed of the motor 12, that is, the speed of the door is maintained at the speed command value. By increasing the speed command as a function of time by this feedback control, when the door reaches a predetermined speed, the speed command is kept constant and the door 21 travels at a constant speed (). Next, when the door 21 opens and the switch operation cam 17 attached to the door 21 operates the OSD, the MPU1
Starts deceleration by receiving the OSD operation signal. (). The deceleration control is performed by reducing the speed command with a time function and decelerating the door by speed feedback control. By the way, for the speed command, the output of the speed detection means 11 is set to MPU1.
It is also possible to lower by a distance function by converting into a distance.

When the speed command drops to a predetermined value (), the MPU 1 keeps the speed command constant and causes the door 21 to run at a low speed. Then door 21
Reaches the open end, and the switch operation cam 17 operates the OLS. Upon receiving the OLS operation signal, the MPU 1 controls the base drive circuit 4 and the motor drive element 9 to apply a constant voltage to the motor 12 so as to hold the door 21 at the open end.

When the door is closed, the open command 102 and the close command 1
In 01, OSD is CSD and OLS is CLS corresponding to the door closing control.

The rotation speed is detected by counting the number of signals generated per unit time. Further, the number of generated signals is used as data on the distance the door has moved, and the data is integrated to obtain position data of the door.

In the case where deceleration control is performed by the operation of OSD14 or CSD15 as described above, the operating positions of OSD14 and CSD13 and
Due to a malfunction, the door slows down or does not slow down, and the door collides with the open / close end, giving passengers a sense of fear.
It can also put passengers at risk.

This measure has a means to determine the operating state of OSD or CSD, but it does not determine the operating position and the door is CLS or O
When operating the LS, that is, when there is a door at the end, it is possible to determine the operating state.Therefore, there is a problem that the door does not slow down and collides with the end before detecting a switch failure. It was

In this embodiment, the positions of the OSD and CSD are calculated based on the data stored in advance, and the defective operation of the OSD and CSD is detected by comparing with the actual operating position.

The operation of this embodiment will be described below with reference to FIGS.

Table 1 is a signal table corresponding to the frontage of the door output from the elevator control device 10.

The combination of the signal lines D0, D1, and D2 is determined according to the door frontage and is output to the door control device.

The door control device is an input / output buffer (hereinafter abbreviated as I / O),
Receive the signal and take in with MPU1. The MPU1 selects frontage data corresponding to the signal from among those stored in advance in the ROM2 and stores it in the RAM2 as the device name PRMR1.

FIG. 3 is a diagram showing a method of calculating the positions of the OSD 14 and the CSD 15.

The deceleration distance data corresponding to the selected frontage data PRMR1 is stored in ROM2, and OSD14 and OLS13 corresponding to PRMR1 are stored.
Distance data between CSD15 and CLS16 are selected from ROM2 and stored in RAM3 as device names A and B.

As a result, the distance data between OLS13 and CSD15 is PRMR1-B
= P102S is calculated and stored in RAM3. Also, with COS16
Distance data between the OSDs 14 is calculated as PRMR1-A = P101S and stored in RAM3.

FIG. 4 is a diagram showing a flow chart of abnormality determination of OSD 14 and CSD 15.

In step 11, P101S and P102S are calculated, and opening / closing commands are identified in steps 12 and 15. If there is no open / close command, the SW error detection flag is reset.

If there is an open command, as the doors open, position data POD1 of the stacked doors and distance data P101 between CLS16 and OSD14
Compare with S (step 13). If OSD14 is not turned on when the door is opened, that is, when POD1 ≧ P101S + α is reached, than when P101S plus P101S + α, which is the operating position margin α, OSD14 malfunctions or is installed. It is determined that the position is shifted to the open end side, the switch abnormality detection flag is set, the speed command value is set to the low speed value V _L , and the door is decelerated (steps 14 and 19).

The same is true when there is a close command, and as the door is closed, the accumulated door position data POD2 and the distance data P102S between OLS13 and CSD15 are compared (step 16). When the door is closed than P102S + α, which is P102S plus operating position allowance α, that is, when CSD15 is not on when POD2 ≧ P102S + α, CSD14 abnormality is determined and the switch abnormality detection flag is set. The speed command value is set to the low speed value _VL , and the door is decelerated (steps 17 and 19). In steps 14 and 17,
If the OSD14 or CSD15 is on, it is determined that the switch operation is normal.

In the above embodiment, means 14 and 15 arranged on the opening and closing path of the door 21 to operate when the door 21 reaches that position and detect the door deceleration start point, and the deceleration start point detection means.
A signal generated in response to the rotation of the door motor 12 in an elevator door control device including speed control means 1 to 11 for decelerating the door motor 12 in response to the outputs of 14 and 15.
A means for detecting the current position of the door 21 by RE (as described above, the signal of the speed detecting means 11 is used as data of the distance traveled by the door, and this is integrated by a computer centered on the MPU 1 to calculate the current position of the door. Position data) and data corresponding to the frontage of the door (signal table of Table 1 stored in ROM2)
Based on the above, means RAM2 (predetermined output value P101S = PRMR1-A, P102S = PRMR1) for storing a predetermined output value of the current position detection means corresponding to the position of the door deceleration start point detection means 14, 15.
-B, and RAM2 stores PRMR1 and A and B)
When the output of the current position detecting means when the door 21 is opened and closed reaches the predetermined output values P101S and P102S, the abnormal signal is output in response to the door deceleration start point detecting means 14 and 15 not operating. And means for decelerating the door motor (computer processing means centering on the MPU1).

In this way, the front of the door from the elevator controller,
The door control device calculates the position of the switch for decelerating the door based on the frontage and compares it with the actual switch operating position to detect a shift in the installation position of the switch or a malfunction during the start. It is possible to provide a safe door control device by reducing the speed after detection. Further, by adding a margin α including the installation error to the calculated switch position and comparing it with the actual operating position, it is possible to eliminate erroneous detection of the switch abnormality.

〔The invention's effect〕

According to the present invention, the abnormality of the switch for generating the door deceleration pattern is determined not only by turning the switch on and off, but also by including the operating position, and by slowing the door, the switch It is possible to prevent a collision with the opening / closing end without decelerating due to a displacement of the installation position, a malfunction, etc., and a safe door control device can be provided.

In addition, the position of the switch is stored in accordance with the frontage, and by the frontage selection signal from the elevator control device, the door control device or the frontage is selected, and the position of the switch is calculated by the door control device. The door control device can be the same regardless of the frontage, and it is not necessary to change the program of the door control device according to the frontage, and standardization can provide an inexpensive door control device.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a door speed curve diagram of door opening / closing control in the embodiment of the present invention, and FIG.
FIG. 4 is an explanatory diagram of the calculation of the switch position for door deceleration, and FIG. 4 is a flow chart for detecting an abnormality in the switch for door deceleration. 1 ... Microcomputer, 5 ... Input / output circuit, 10 ...
... Elevator control device, 11 ... Position and speed detection means, 13
...... Open end detection means, 14 ...... Open door deceleration start point detection means, 15 ...... Closed door deceleration start point detection means, 16 ...... Closed end detection means.

Claims (4)

[Claims] 1. A means for detecting a door deceleration start point, which is arranged on a door opening / closing path and operates when the door reaches that position, and a door motor is decelerated in response to an output of the deceleration start point detecting means. In an elevator door control device including a speed control means for causing the means to detect the current position of the door by a signal generated according to the rotation of the door motor, the current corresponding to the position of the door deceleration start point detection means A means for storing a predetermined output value of the position detecting means, and a response to the fact that the door deceleration start point detecting means does not operate when the output of the current position detecting means when the door is opened and closed reaches the predetermined output value. A door control device for an elevator, comprising: a means for outputting an abnormality signal. 2. A means for detecting the door deceleration start point, which is arranged on the door opening / closing path and operates when the door reaches the position, and a door motor is decelerated in response to the output of the deceleration start point detecting means. In an elevator door control device including a speed control means for causing the means to detect the current position of the door by a signal generated according to the rotation of the door motor, the current corresponding to the position of the door deceleration start point detection means A means for storing a predetermined output value of the position detecting means, and a response to the fact that the door deceleration start point detecting means does not operate when the output of the current position detecting means when the door is opened and closed reaches the predetermined output value. A door control device for an elevator, comprising means for decelerating a door motor. 3. A means for detecting the door deceleration start point, which is arranged on the door opening / closing path and operates when the door reaches the position, and a door motor is decelerated in response to the output of the deceleration start point detecting means. A door control device for an elevator having a speed control means for controlling the door deceleration start based on the data corresponding to the frontage of the door and the means for detecting the current position of the door by a signal generated according to the rotation of the door motor. A means for storing a predetermined output value of the current position detecting means corresponding to the position of the point detecting means, and a door deceleration start when the output of the current position detecting means when the door is opened and closed reaches the predetermined output value. An elevator door control device comprising means for decelerating a door motor in response to the point detecting means not operating. 4. The elevator door control according to claim 3, wherein the predetermined output value is a value obtained by adding a planned value to the output value of the current position detection means corresponding to the position of the door deceleration start point detection means. apparatus.