KR20000013365A - Elevator door control device and method - Google Patents

Abstract

PURPOSE: An elevator door control device and method are provided to reduce a parallel signal line between an operation control device to control the running state of the elevator and a door control device to control the opening and closing of the door of the elevator, and to improve the reliability of a signal transmission. CONSTITUTION: The elevator door control device comprises: an operating management control device(2a) to output the signal of an elevator operation, of a drive and a control of a door; a display device(23) to display a door moving impossibility when the defect of a microprocessor is generated; a destination call controller(17a) installed inside a car(9), and to control a destination call and various kinds of operating switches; a door control device(6a) installed inside the car(9), to perform the open and the close of the door by an order signal of the operating management control device(2a), and to output a state signal to show the state of the door; and a position detector(12) to transmit to the door control device(6a) by detecting the open and close position of the door of the elevator car.

Description

Elevator door control device and method

The present invention relates to an elevator door control apparatus and method, in particular, parallel signal line between the operation control device for controlling the operating state of the elevator and the door control device for controlling the opening and closing of the door of the elevator car and improve the reliability of signal transmission An elevator door control apparatus and method are disclosed.

In general, due to the rapid development of the low-cost, high-performance microprocessor according to the rapid development of the electronics industry, even in the case of elevators, the door control device for controlling the opening and closing of the door, the destination button in the car and the destination for controlling various operation switches A high-performance, low-cost microprocessor is also used in the call control device. A signal line is connected between the operation control device that controls the operation of the elevator and the destination call control device that controls the destination button inside the car. The serial transmission device is greatly improved.

However, data transmission between the operation control device that controls the operation state of the elevator and the door control device that controls the opening and closing of the door receives input and output data through a parallel signal line directly, and thus requires a large amount of signal lines and becomes a high floor. As the distance between signal lines increases, the reliability of signal transmission is greatly affected.

1 is a block diagram showing a conventional elevator door control device, which is installed in the machine room 1 of an elevator as shown in the drawing, and is configured with a microprocessor (not shown) inside to control a driving state of a car. A running management control device 2; A destination call control device 17 installed in the elevator car and having a microprocessor embedded therein to control the destination button; A door control device (6) installed at the top of the elevator car and having a microprocessor embedded therein to control the door of the car; A power conversion device (11) for receiving a three-phase AC power supply (10) to operate the door driving motor (13) for driving opening and closing of the door by a control signal of the door control device (6); And a position detector 12 which detects the opening / closing position with respect to the door of the elevator car and transmits the detection signal to the door control device 6.

The operation management control device 2 includes an input buffer 3 for receiving a signal output from the door control device 6, an output buffer 4 for outputting a signal to the door control device 6, and a destination. A serial transmission device 14 for transmitting and receiving data with the call control device 17 is provided.

The door control device 6 has an input buffer 8 and an output buffer 7 for transmitting and receiving signals to and from the operation management control device 2.

The destination calling control device 17 is provided with a serial transmission device 16 for transmitting and receiving data with the operation management control device 2, and describes the operation of the conventional device configured as described above.

First, the operation management control device 2 controls the operation of the car 9 such as driving, stopping, and speed detection of the car 9 according to the inside of the car 9 and the call of the platform. The command signal for commanding the opening and closing is output to the output buffer 4 and transmitted to the door control device 6 through the parallel signal line 5.

Accordingly, the door control device 6 receives the command signal through the input buffer 8, and the reference speed command for commanding the rotational speed and direction of the door driving motor 13 so as to open and close the door accordingly. Is applied to the power converter 11, whereby the power converter 11 receives the three-phase AC power supply 10 supplied from the elevator machine room 1 to the reference speed command of the door control device (6). In accordance with the conversion, the door driving motor 13 controls to open and close the door.

At this time, the position detector 12 detects the opening / closing position of the door by the reference speed of the door control device 6 and outputs a detection signal according to the door control device 6.

Thereafter, the door control device 6 detects the state signal of the door, that is, the door's complete open and closed state, the door open abnormality, the door closing abnormality, the power abnormality, and the like, after performing the above operation. The signal according to this output state is transmitted to the input buffer 3 of the driving management control apparatus 2 through the parallel signal line 5.

Accordingly, the driving management control device 2 decodes the state signal input from the door control device 6 to operate the door control command according to the state signal in the same manner as described above.

On the other hand, the destination call control device 17 transmits and receives a control signal for the destination button through the operation management control device 2 and the serial transmission device (14), (16).

In the conventional apparatus as described above, a large number of parallel signal lines are connected according to signals to be transmitted between the operation management control device 2 and the door control device 6, thereby increasing the cost according to the expensive signal lines. 1 is a block diagram of a patent disclosed in Korean Patent Publication No. 93-9959. As shown in FIG. 1, when a door opening operation of a door is to be opened in the operation management control device 2 as shown in FIG. 30, the door opening and closing command is sent to the second serial-parallel converter 32 of the door control device 6, and the door opening and closing enable signal is sent through the parallel signal line 31. In this case, the destination call registration device is provided with a separate serial, parallel transmission device (not shown).

That is, in the conventional apparatus as described above, a large number of parallel signal lines are connected according to a signal to be transmitted between the operation control device and the door control device, resulting in a cost increase due to expensive signal lines, and also taking a lot of time or maintenance for installation work. It takes a lot of inspection time, and the higher the elevator, the longer the signal line between the operation control device and the door control device has a problem that the reliability of signal transmission is deteriorated, Korean Patent Publication 93-9959 to solve this problem The same problem can be solved, but a separate series-parallel converter must be installed for driving the door, which causes the increase in cost, and the door control device is closely related to the safety of passengers. Even though it's an area, you can't rescue passengers, When the prophet called to wake registration system is broken, there is a problem with no adequate measures.

Therefore, the present invention devised in view of the above problems can reduce the parallel signal line connected between the operation control device and the door control device to ensure the reliability of signal transmission and to make it suitable to safely rescue passengers in case of failure. It is an object of the present invention to provide an elevator door control apparatus and method.

1 is a block diagram showing a configuration for a conventional elevator door control device.

2 is a block diagram of a patent disclosed in Korean Patent Publication No. 93-9959.

Figure 3 is a block diagram showing the configuration for the elevator door control apparatus of the present invention.

4 is a view showing a door failure detection state signal in FIG.

FIG. 5 is a flow chart of the door drive in FIG. 3; FIG.

Fig. 6 is a flowchart of operation of door failure detection control in Fig. 3;

7 is a flowchart of operation of the door drive for the failure of the operation management control apparatus in FIG.

* Description of the symbols for the main parts of the drawings *

1: elevator machine room 9: elevator car

2a: Operation control device 4a, 19, 21: Output buffer

5a, 20: parallel transmission line 6a: door control device

8a, 18, 22: Input buffer 11: Power converter

12: Position detector 13: Motor for door drive

14a, 16a: serial transmission device 17a: destination call control device

The present invention for achieving the above object is installed in the elevator machine room, the operation management control device for outputting the operation and control signals of the elevator operation and door, and the destination call installed in the car to control the destination call and various operation switches In an elevator door control device having a control device and a door control device installed on the upper part of the car and performing a door opening and closing control by a command signal of the operation management control device and outputting a status signal indicating the state of the door. Each serial transmission device is embedded in the operation management control device and the destination call control device, and the serial transmission device is connected by one or more serial transmission lines to serially transmit control commands, status signals, and door failure signals of the door. The door drive command is directly sent from the output buffer of the management control device to the input buffer of the door control device. Transmitting through a parallel signal line, and between the destination call control device and the door control device is characterized in that each input and output buffer to transmit the control command and the status signal of the door through the parallel signal line.

The present invention for achieving the above object comprises a first step of pre-processing operations for opening and closing the door; A second step of detecting a failure of the door and preprocessing the door accordingly; When a failure of the operation management control device occurs, it is detected by the third process of performing a predetermined operation according to the detection of the door accordingly.

Hereinafter, the operation and effects of the elevator door control apparatus and method according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a block diagram showing the configuration of the elevator door control device of the present invention, a driving management control device (2a) is installed in the elevator machine room 1 and outputs the operation and control signals of the elevator operation and the door as shown therein Wow; An indicator 23 for indicating that the door cannot be started when the microprocessor has failed; A destination calling control device 17a installed inside the car 9 and controlling destination calling and various operation switches; A door control device 6a installed inside the car 9 to perform opening and closing of the door by a command signal of the operation management control device 2a and outputting a status signal indicating the state of the door; The serial transmission device 14a, which is provided in the driving control device 2a and the destination call control device 17a, respectively, and serially transmits a control command and a status signal of the door and a door failure signal through one serial transmission line 15a. ), 16a; A parallel signal line (5a) for directly transmitting a door drive command from the output buffer (4a) of the travel management control device (2a) to the input buffer (8a) of the door control device (6a); Input buffers 18, 22 and output buffers 19 which are respectively provided in the destination call control device 17a and the door control device 6a to transmit control commands and status signals of the door through the parallel signal line 20. ), 21; A power conversion device (11) for receiving a three-phase AC power supply (10) to operate the door driving motor (13) for driving opening and closing of the door by a control signal of the door control device (6a); The position detector 12 detects the opening / closing position with respect to the door of the elevator car and transmits the detection signal to the door control device 6a.

Fig. 5 is an operation flowchart of the door operation of the present invention, and as shown therein, a first step A1 of detecting a command signal for opening the door; A second step (A3) of determining whether door control data has been input if a command signal for opening the door is detected in the first step (A1); When the door control data is not input in the second step (A3), the standard speed door opening operation is processed (A4), and when the door control data is input, the third step (A5) for processing the opening operation according to the door control data. Wow; A fourth step (A2) of detecting a door closing command and determining whether door control data has been input if the command signal for opening the door has not been detected in the first step (A1); If the door control data is not input as a result of the determination of the fourth step (A2), the operation for closing the door at the standard speed is processed (A7), and if the door control data is input, the closing operation for the door control data is processed. The fifth step A6 is performed.

Fig. 6 is an operational flow chart for door failure detection control, and a first step B1 of detecting occurrence of door failure as shown therein; If the occurrence of the door failure is not detected as a result of the determination in the first step (B1), the door driving operation is performed; if the occurrence of the door failure is detected, the failure signal for the microprocessor is output after outputting a signal for the door failure state. A second step (B2, B3) of judging whether it has occurred; If a failure occurs in the microprocessor as a result of the determination in the second step (B3), the failure signal is transmitted to the operation management control device 2a, and the door start cannot be displayed on the display 23 according to the microprocessor. A third step (B4, B7) for determining whether a restart signal has been input three or more times if a failure has not occurred; If the restart signal is input three or more times as a result of the determination in the third step (B4), the signal is transmitted to the operation management control device 2a, and then the door start disabling is displayed on the indicator, and the restart signal is not input more than three times. If not, restarting the door control device and determining whether a failure has occurred in the door microprocessor (B6); If the failure occurs in the door microprocessor as a result of the determination in the fourth step B6, the controller returns to the second steps B2 and B3 and terminates the door failure detection control operation if the door microprocessor has not failed. Perform in five steps.

7 is a flowchart illustrating the operation of the door drive when a failure occurs in the operation management control device of the present invention, and as shown in the drawing, a first step C1 for determining whether a failure occurs in the operation management control device 2a; As a result of the determination of the first step C1, if no failure occurs in the operation management control device 2a, the control unit returns to the first step C1, and if a failure occurs in the operation management control device 2a, the door may be opened. A second step C2 of determining whether the area is local; A third step (C3) of returning to the second step (C2) if it is not the door openable area and determining whether the door open button is registered if the door openable area is determined as the result of the second step (C2); If the door open button is not registered as a result of the determination of the third step (C3), it is fed back to the third step (C3). If the door open button is registered, the door opening operation is performed after the door opening operation is performed. A fourth step C4 is fed back to step C1.

Such operation of the present invention will be described in detail.

First, the operation management control device 2a performs operation management such as driving and stopping speed detection of the car according to the destination call button installed in the car 9 and the car call installed in the platform. The command signal is transmitted to the input buffer 8A of the door control device 6a, and the destination call control device 17a generates a reference speed command for commanding the rotational speed and direction of the door driving motor 13. .

That is, the destination call control device 17a controls the destination button so that the passenger can move to a desired floor, and reads and controls the switch state related to various operations. Such data is transmitted through one or more serial transmission lines through the serial transmission device 16a. 15a, it transmits and receives to the serial transmission apparatus 14a of the said driving management control apparatus 2a.

The door control device 6a controls the opening and closing of the door by driving the door motor 13 according to the reference speed command generated by the destination call control device 17a. 21 and the parallel signal line 20 are transmitted.

Here, the operation related to the door will be described with reference to FIGS. 5, 6, and 7. FIG.

First, in consideration of the safety of the passenger, the door control device 2a directly transmits the door command to the door control device 6a through the output buffer 4a and the parallel signal line 5a, and accordingly the door control device ( 6a), if the signal transmitted from the driving management control device 2a is a door command, the door control signal is transmitted to the destination calling control device 17a through the serial transmission line 15a of the driving management control device 2a. do.

Thereafter, the destination calling control device 17a transmits the speed command to the door control device 6a through the output buffer 19 and the parallel signal line 20, whereby the door control device 6a transmits the door driving motor. (13) to control the opening and closing speed of the door to operate in accordance with the speed command.

On the other hand, the door control device 6a transmits various door status signals and door failure detection signals generated in the process of controlling the door through the output buffer 21 and the parallel signal line 20 of the destination call control device 17a. It is input to the input buffer 18.

Accordingly, the destination call control device 17a analyzes the input door state signal and the door failure detection signal and transmits the corresponding signal through the serial transmission line 15a to the serial transmission device 14a of the operation management control device 2a. To send.

The operation management control device 2a receives a signal from the destination call control device 17a, analyzes it, and displays it on the display 23 so that a maintenance worker can easily check and measure the current state of the elevator door in the machine room.

If a door failure occurs, the door failure detection signal is analyzed by the door control device 6a as shown in FIG. 6, and when the door failure signal is detected, the three parallel signal lines 20 are shown in FIG. 4. Through the output buffer 21, each fault detection status signal is transmitted to the destination calling control device 17a through each bit combination.

Then, the destination call control device 17a analyzes the door failure detection state signal, and when a failure signal is detected for the microprocessor of the door control device 6a, the destination call control device 17a sends a restart signal of the door control device 6a. Output from the output buffer 19 to the door control device 6a at 17a, whereby the door control device 6a is restarted by the restart signal.

At this time, if the fault signal for the microprocessor is repeatedly detected, the above-described process is repeated three times, and if the fault signal for the microprocessor of the door control device 6a is detected, the operation management control device ( 2a), the door control disable signal is transmitted from the serial transmission device 16a through the serial transmission line 15a. Accordingly, the operation management control device 2a displays the signal with the indicator 23 and starts operation of the elevator. Stop it.

Here, if the destination call control device 17a has failed, the destination call control device 17a can be restarted by the restart signal of the door control device 6a.

Fig. 7 is a flowchart showing the driving operation of the door when a failure occurs in the operation management control device 2a. First, the destination call control device 17a determines whether the operation management control device 2a has failed. If it is determined that the current car position is input to the door open signal in the door openable area, then the door is opened to control the passengers to leave the car.

As described in detail above, the present invention transmits some door control signals to the destination call control device through the serial transmission line by using the destination call control device installed in the car and controlling the destination button and the serial transmission device of the operation management control device. By analyzing the control signal from the destination call control device and outputting it to the door control device, and outputting the status and fault signal of the door control device to the destination call control device and transmitting the control signal to the operation control device through the serial transmission device. In addition to reducing the number of parallel signal lines directly connected to the device and the door control device, it also has the effect of improving the reliability by shortening the distance of the signal line. The door can be opened by the opening button built in the call control device. It is possible to safely rescue passengers, and also detects the failure of the microprocessor built in the door control device, and outputs a restart signal with the destination call control device to improve the reliability of the door control device. In addition, the configuration is simplified and the cost is reduced by transmitting and receiving between the destination call registration device and the door control device by one serial and parallel transmission device.

Claims (6)

Operation management control device which is installed in the elevator machine room and outputs the operation and control signals of the elevator operation and doors, and destination call control device which is installed inside the car and controls destination calling and various operation switches, An elevator door control device having a door control device that performs opening and closing control of a door by a command signal of a management control device and outputs a status signal indicating a state of the door, wherein the operation management control device and the destination call control device Each serial transmission device is built in the serial transmission device, which is connected by one or more serial transmission lines to serially transmit door control commands, status signals, and door failure signals, and directly from the output buffer of the operation control device. The door driving command is transmitted through the parallel signal line to the input buffer of the An elevator door control device comprising an input buffer and an output buffer, respectively, between the flow control device and the door control device to transmit control commands and status signals of the door through parallel signal lines. The elevator door control apparatus according to claim 1, further comprising an indicator for indicating a fault condition. A first process of predetermined operation of opening and closing of the door; A second step of detecting a failure of the door and preprocessing the door accordingly; Elevator door control method characterized in that when the failure of the operation management control device detects this and accordingly performs a third process of predetermined operation of the door accordingly. The method of claim 3, wherein the first step comprises: a first step of detecting a command signal for opening the door; A second step of determining whether door control data has been input if a command signal for opening the door is detected in the first step; A third step of processing a standard speed door opening operation when the door control data is not input in the second step and a opening operation corresponding to the door control data when the door control data is input; A fourth step of detecting a door closing command and determining whether door control data has been input if the command signal for opening the door has not been detected in the first step; If the door control data is not input as the determination result of the fourth step, the operation of closing the door at the standard speed is processed, and if the door control data is input, the fifth step of processing the closing operation according to the door control data is performed. Elevator door control method, characterized in that. 4. The method of claim 3, wherein the second process comprises: a first step of detecting occurrence of door failure; If the door failure is not detected as a result of the determination of the first step, the door driving operation is performed. If the door failure is detected, the controller outputs a signal for the door failure state and then determines whether a failure signal for the microprocessor has occurred. Performing a second step; As a result of the determination of the second step, if a failure occurs in the microprocessor, a failure signal corresponding thereto is transmitted to the operation management control device. Then, the door start cannot be displayed accordingly. If the failure occurs in the microprocessor, the restart signal is three or more times. A third step of determining whether an input has been made; If the restart signal is input three or more times as a result of the determination in the third step, the corresponding signal is transmitted to the operation management control device, and the door start disabling is displayed on the display. If the restart signal is not input three times or more, the door control device is input. A fourth step of determining whether a failure has occurred in the door microprocessor after restarting; If the failure occurs in the door microprocessor as a result of the determination in the fourth step, the process returns to the second step, and if the failure does not occur in the microprocessor embedded in the door, the process returns to the first step. Elevator door control method characterized in that. The method of claim 3, wherein the third process comprises: a first step of determining whether a failure occurs in the operation management control apparatus; A second step of returning to the first step if the operation management control device does not have a failure as a result of the determination of the first step, and determining whether the door can be opened if the operation management control device has a failure; A third step of returning to the second step if it is not the door openable area and determining whether the door open button is registered if the door is openable area; And if the door open button is not registered, return to the third step. If the door open button is registered, the fourth door returns to the first step after the door opening operation is performed. Elevator door control method characterized in that carried out in steps.