JPH03152084A - Elevator door control device - Google Patents

Abstract

PURPOSE:To obtain a safe elevator door control device by storing in memory an operating position of a position switch which produces a door speed pattern, and by comparing the position with an actual operating position so as to detect a positional defect or a malfunction of the position switch or the like. CONSTITUTION:An elevator control device device 10 inputs data corresponding to a frontage of a door 21, to a door control device so as to inform the door control device of the frontage. Further, the door control device stores in memory positional data from position switches 13 through 16 in accordance with the frontage of the door so as to compute and store in memory the positions of the positions switches 13 to 16 from the positional data. Further, during actual opening and closing of the door 21, the operating positions of the position switches 13 through 16 are stored in memory and compared with the computed positions. If they are above or below, it is determined that the switches are abnormal, and accordingly, the door 21 is operated at a lower speed. With this arrangement, it is possible to prevent the door from bumping upon one end part of the frontage being caused by no deceleration due to a positional defect or a malfunction of the position switches 13 through 16.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an elevator door control device, and more particularly to a failure detection method of door deceleration start point detection means and a subsequent processing method.

[Conventional technology]

As described in Japanese Utility Model Application Publication No. 60-162572, in conventional devices, when the output signal of the position switch for generating a predetermined speed pattern does not meet a predetermined condition when the door is fully opened, the position switch malfunctions. Therefore, the door opening/closing speed was limited to a certain value.

[Problem to be solved by the invention]

The above-mentioned conventional technology determines the operation of a one-position switch, that is, whether it is on or off, but does not determine the operating position, and there is a problem in that even if the position switch is installed in the wrong position, it is not determined to be abnormal.

This leads to a shift in the generation position of the speed pattern due to the operation of the position switch, especially.

Position close to the door closing end If the switch is installed closer to the closing end than the normal position, the door will collide with the end without being able to decelerate completely, causing a sense of fear to the passengers and causing shock when they are caught. It's big and dangerous.

In addition, the operating state of the position switch is determined when the door is fully opened or closed, and the second opening or closing after the switch failure is when the door continues to run with the switch failure. Sometimes there is a problem with the door not slowing down, putting passengers at risk.

In the present invention, the operating position of a position switch that generates a door speed pattern is stored in advance.

By comparing with the actual operating position of the position switch,
The purpose of the present invention is to provide a door control device that is even safer by detecting an incorrect installation position or malfunction of a position switch and lowering the door speed.

[Means to solve the problem]

To achieve the above object, the elevator control device inputs data corresponding to the door frontage to the door control device and informs the door control device of the frontage, and the door control device
The position data of the one-position switch is stored in accordance with the door frontage, and the one-position switch is selected according to the frontage data from the elevator control device. Furthermore, the position of the position switch is calculated from the door frontage and position switch position data and stored. The operating position of the 1-position switch during actual door opening/closing is memorized and compared with the calculated position. If there is an excess or deficiency, it is determined that the switch is abnormal and the door is moved at a slower speed. As a result, it is possible to prevent the door from colliding with the end portion without decelerating due to an incorrect installation position or malfunction of the position switch.

[Effect]

The elevator control device transmits a signal corresponding to the door opening as a combination of binary numbers to the door control device, the input/output circuit of the door control device receives the signal, and the door control microcomputer (hereinafter abbreviated as MPtJ) reads and writes the signal. The data is stored in a random access memory (hereinafter abbreviated as RAM) of available memory. In addition, read-only memory (hereinafter referred to as RO)
Select the door frontage data and 1-position switch position data stored in the RAM (abbreviated as M) according to the data corresponding to the door frontage stored in the RAM, calculate the position switch position, and store the position data in the RAM. Remember.

The door position and speed detection means detects the door position when the door is opened and closed, and the position data is taken into the MPU via the input/output circuit. Further, the position switch signals are also taken into the MPU via the input/output circuit.

As a result, the position data when the position switch starts operating can be determined, and the actual operating position can be determined.

Thereby, by comparing the calculated position of the position switch with the actual operating position and determining whether the result is excessive or insufficient, it is possible to detect a malfunction in the installation position or malfunction of the position switch.

Furthermore, by adding an offset to the calculated position data, the possibility of malfunction can be reduced.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

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

From FIG. 1, the elevator door 21 is connected to the door rail 22.
The strip 18 is connected to the strip 18 at a connecting portion 23, and the strip 18 is wound around a rotating body 20 installed at both ends of the elevator car entrance.
(hereinafter referred to as a motor) 12 and a rotating body 19 are connected by a strip,
The motor 12 is energized and the rotational movement of the motor 12 is controlled by the door 21.
The horizontal movement of the door 21 is converted into a horizontal movement to open and close the door 21.

At the elevator car entrance, there are an open end detection switch 13 (hereinafter referred to as ○LS) that detects the open end of the door 21 and an open deceleration start point detection switch 14 (hereinafter referred to as O8D) that detects the deceleration start position of the door when the door is opened. and a closed end detection switch 16 (hereinafter referred to as CLS) that detects the closed end of the door 21, and an open deceleration start point detection switch 15 (hereinafter referred to as C8D) that detects the deceleration start position of the door when the door is closed. A switch operation cam 17 is attached to the door 21, and the switch is configured to operate in synchronization with the position of the door 21, thereby detecting the deceleration start position, the open end position, and the closed end position of the door. The door control device drives and controls the motor 10 that drives the door. Motor drive element 9. Motor 10. Single-phase AC power supply for supplying DC power to the motor drive element 9 6.
A full-wave rectifier diode bridge 7, a smoothing capacitor 8, a base drive circuit 4 that controls the ignition of the motor drive element 9, a microcomputer MPUI that controls the base drive circuit 4, and a ROM that is a peripheral device of the MPU 1.
2. Consists of RAM 3 and human output buffer (Ilo) 6,
Also, a speed detection means 11 attached to the motor 12 detects the rotation speed of the motor 12 and provides a detected rotation speed signal to the MPU 12 via the human output buffer 5;
.

C8D, OLS, 08D (7) operation signal G, door opening command signal 102 output from the elevator control device 10,
A close command signal 101 is given to the MPU 1 via a human output buffer. Further, signals Do, Di, and D2 corresponding to the door frontage data are outputted from the elevator control device 10, and the signals are given to the MPU 1 via the human output buffer.

It consists of these input and output signals.

FIG. 2 shows an outline of door opening/closing control using a door speed curve, and this outline will be explained below.

First, in the case of opening the door, the elevator control device 10 outputs the opening command signal 102, and when the MPU 1 receives this (■), the MPUI performs the door opening control. By raising it in the door direction, the base drive circuit 4 fires the motor drive element so that the motor rotates in the door opening direction, and applies voltage to the motor 12.

A detailed explanation of the ignition control will be omitted. By applying a voltage to the motor 12, the motor 12 rotates in the door opening direction, and the door begins to open. At this time, the MPUI detects the speed of the door using the output signal of the rotational speed detection means 11 of the motor 12, compares it with the speed command, and controls the base drive circuit 4 based on this result to adjust the point of the drive element of the motor 12. Speed feedback control is performed to control the arc and maintain the rotational speed of the motor 12, that is, the speed of the door, at the speed command value. By increasing the speed command as a function of time through this feedback control, when the door reaches a predetermined speed, the speed command is kept constant and the door 21 runs at a constant speed (■).
When the C8D is opened and the switch operation cam 17 attached to the door 21 operates the C8D, the MPUI starts decelerating by receiving the C8D operation signal. (■) The deceleration control is performed by decreasing the speed command as a time function and decelerating the door using speed feedback control.By the way,
The speed command can also be lowered by a distance function by having the MPU 1 convert the output of the speed detection means 11 into a distance.

When the speed command falls to a predetermined value (■), the MPUI keeps the speed command constant and causes the door 21 to run at a low speed. Next, the door 21 reaches its open end, and the switch operating cam 17
Operate S. By receiving and receiving the OLS operation signal, the MPUI 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 open.

In the case of closing the door, similarly to opening the door, the door opening command 102 corresponds to the closing command 101, C8D corresponds to C8D, and OLS corresponds to CLS to control the closing of the door.

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

The deceleration control is not performed by the operation of 08D14 or C3D15 as described above.

08D14. Due to the operating position or malfunction of the C3D13, the door decelerates late or does not decelerate, which may cause the door to collide with the opening/closing end, giving passengers a sense of fear and potentially putting one passenger in danger.

This countermeasure has a means of determining the operating state of C8D or C8D, but the operating position is not determined, and the operating state is not detected when the door is operating CLS or OLS, that is, when the door is at the end. Therefore, when a switch malfunctions, the door does not decelerate before the failure is detected and the door collides with the edge.

In this embodiment, the malfunction of 08DIC8D is detected by calculating the positions of C3D and C8D based on previously stored data and comparing them with the actual operating positions.

The operation of this embodiment will be explained below with reference to FIGS. 3, 4, and 5.

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

Table 1 Combinations of signal lines Do, Di, and D2 are determined depending on the door width and output to the door control device.

The door control device receives a signal using a human output buffer (hereinafter abbreviated as I10) and takes it in using the MPUI.

The MPU 1 selects frontage data corresponding to the signal from those stored in the ROM 2 in advance, and stores the data in the RAM 2.
It is stored as the device name PRMR1.

FIG. 4 is a diagram showing a method for calculating the positions of 08D14 and C3D15.

Store deceleration distance data corresponding to the selected frontage data PRMRI in ROM2, select distance data between 03D14 and 0LS13 and distance data between C3D15 and CLS16 corresponding to PRMRI from ROM2, and select device names A and B. It is stored in RAM2 as .

As a result, distance data between OLS 13 and C3D15 is calculated as PRMRI-B=P102S, and RAM2
to be memorized. In addition, distance data between CLS16 and 08D14 is calculated as PRMRI-A=PIOIS, and RA
Store in M2.

FIG. 5 is a diagram showing a flowchart of abnormality determination for 08D14 and C3D16.

In step 11, PloIS and P102S are calculated, and the opening/closing command is identified in step 12.16. If there is no opening/closing command, the SW abnormality detection flag is reset.

If there is an opening command, as the door opens, the accumulated door position data POD1 is compared with the distance data PIOIS between CL816 and 08014 (step 13);
PIOIS + α, which is PIOIS plus operating position margin α
When the door opens, that is, POD1≧PIO
If 08D14 is not on when IS+α is reached, 03D14 has malfunctioned or.

It is determined that the installation position has 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, and the door is decelerated (steps 14 and 19).

The same goes for the case where there is a closing command, and as the door closes, the accumulated door position data POD2 is compared with the distance data P102S between OLS 13 and C5D15 (step 16), and the operation position margin α is added to P102S. When the door is closed than P102S+α, that is, P
When OD2≧P102S+α and C3D15 is not on, it is determined that there is an abnormality in C3D14, the switch abnormality detection flag is set, the speed command value is set to the low speed value V+, and the door is decelerated (step 17.19 ). Step 14. ．． At step 17, if 08D14 or C3D15 is on, it is determined that the switch operation is normal.

In this way, the door frontage can be controlled from the elevator control device.
The door control device calculates the position of the door deceleration switch based on the frontage and compares it with the actual switch operation position to detect misalignment of the switch installation position or malfunction during opening/closing. By lowering the speed after detection, a safe door control device can be achieved. It was also calculated. By adding a margin α that includes installation errors to the switch position and comparing it with the actual operating position, it is possible to eliminate false detection of switch abnormalities.

[Effects of the Invention] According to the present invention, an abnormality in a switch for generating a door deceleration pattern is determined not only by whether the switch is turned on or off, but also by determining the operating position and slowing down the door. By doing so, it is possible to prevent the opening/closing end from colliding with the opening/closing end due to misalignment of the installation position or malfunction of the switch without decelerating, and a safe door control device can be achieved.

In addition, the door control device can store the position of the switch according to the frontage, select the frontage from the door control device based on the frontage selection signal from the elevator control device, and calculate the switch position. It can be the same regardless of the frontage, and there is no need to change the program of the door control device depending on the frontage, and by standardizing it, the door control device can be made inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a door speed curve diagram for door opening/closing control in the embodiment of the present invention, and FIG.
The figure is an explanatory diagram of the calculation of the door deceleration switch position.
The figure is a flowchart of the abnormality detection operation of the door deceleration switch. 1... Microcomputer, 5... Input/output circuit,
DESCRIPTION OF SYMBOLS 10... Elevator control device, 11... Position and speed detection means, 13... Open end detection means, 14... Opening door deceleration start point detection means, 15... Closing door deceleration start inspection foil Figure 1 Figure 3

Claims (1)

[Scope of Claims] 1. In a door control device comprising means for detecting a door deceleration start point, and means for detecting the position and speed of the door, the elevator control device corresponds to a frontage of the door stored in advance. Data is input to the door control device, the position of the door deceleration start point detection means is calculated and stored from the data corresponding to the door frontage, and the operating position of the door deceleration start point detection means when the door is opened or closed. is stored as the value of the output data from the position and speed detection means of the door, and the position is calculated from the operation position data of the door deceleration start point detection means when the door is opened and closed, and the data corresponding to the frontage of the door. An elevator door control device, wherein an abnormality in the door deceleration start point detection means is determined by comparison with data, and after detecting the abnormality, a door speed command value is set to a low speed value. 2. In claim 1, adding offset data to the calculated position data,
When the door deceleration start point detection means does not operate even if the output data of the door position and speed detection means exceeds the value of the calculated data, it is determined that the door deceleration start point detection means is malfunctioning. elevator door control device.