JPH1129284A - Elevator control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase safety by reducing a door speed at the time of forced closing of a door in order to prevent the door closing from becoming impossible due to continuous detection by a photo electric device or continuous depressing of a call button at a landing hall. SOLUTION: In an elevator control device which is provided with a photo electric device 2d to reverse an elevator door when it is closed, a call button 2e located at a landing hall, and a calculation device 2i to measure that the photo electric device 2d and the call button 2e located at the landing hall are operated continuously, a speed pattern for door closing operation is commanded 2j from the elevator control device 2i to a door control device 2b when the door is closed forcibly so as to alter a door opening and closing speed pattern. Thus the door closing speed is made slower than normal when the door is closed forcibly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door opening / closing control, and relates to a case where a door is forcibly closed to prevent the door from being unable to be closed due to an erroneous detection of a photoelectric device or the like.
The present invention relates to an elevator control device capable of changing a door closing speed pattern.

[0002]

2. Description of the Related Art In an elevator door, a safety device including a safety shoe, a photoelectric device, and the like is provided at a tip of the door. When the safety device detects a passenger during a door closing operation, the door is moved in an opening direction. After turning over and opening to the open end of the door, close the door again. Similarly, when the call button of the hall is depressed, the door is reversed in the opening direction by the press of the call button of the hall during the door closing operation, opens to the open end of the door, and then closes again.

[0003] Even when there are no passengers, the photoelectric device may malfunction due to smoke from a fire or the like, the door may remain open, and the elevator may become unusable. If the sensor continues detection, control is performed to ignore the photoelectric device and forcefully close the door.

[0004] However, when the passengers of the elevator are continuously blocking the photoelectric device for a long time due to a large number of people or moving in and out of luggage such as moving, the door closing operation is forcibly started. Further, even when the hall button is continuously pressed, the door closing operation is forcibly started in the same manner as the above operation.

Therefore, conventionally, for example, Japanese Patent Laid-Open No.
As disclosed in Japanese Patent No. 21796, there is a system in which the door closing speed is reduced in normal times by the number of times the door open button or the safety device is operated.

[0006]

In the conventional door control as described above, the door closing speed in the case where the safety device operates continuously remains normal, and even if there are passengers, the door closing speed remains at the normal speed. There is a problem with closing the door.

In the present invention, the door speed is reduced when the door is forcibly closed even when the safety device such as the photoelectric device operates continuously or the call button of the hall is continuously pressed. The purpose is to improve the safety of passengers.

[0008]

The photoelectric device for reversing the door during the door closing operation of the elevator, the hall button call button, and the photoelectric device and the hall call button are operated continuously. And a means for enabling the elevator control device to change the speed pattern of the door closing operation when the door is forcibly closed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is an overall configuration diagram showing an embodiment of an elevator control device according to the present invention.

In FIG. 2, 2k is an elevator door, 2k
d is a photoelectric device provided on the door of the elevator, 2i is a computing device in the elevator control device 2a that receives a signal 2g generated by the operation of the photoelectric device 2d and generates a door opening / closing command 2j, and 2b is a door from the computing device 2i. This is a door control device for operating the door drive circuit 2c in response to the opening / closing command 2j.

Reference numeral 2e denotes a call button for a hall for calling an elevator, and 2f denotes a signal for transmitting the operation of the call button to the arithmetic unit 2i. The door control device 2b selects the door opening / closing speed pattern 2h according to the door opening / closing command 2j from the arithmetic unit 2i.

The door drive circuit 2c operates a motor for opening and closing an elevator door at a speed according to the door opening and closing speed pattern.

Next, the operation of the embodiment constructed as described above will be described. The elevator closes the door after a lapse of a certain period of time when passengers get on and off in a normal automatic driving state. However, in consideration of safety, the elevator, when the door 2k is moving in the closing direction, when the photoelectric device 2d, which is a safety device attached to the end of the door, detects a passenger or the like between the doors. To the arithmetic unit 2i in the control unit 2a via the signal 2g output from the control unit 2a.

Based on the signal 2g, the arithmetic unit 2i terminates the door close command 2j and transmits the door open command 2j to the door control device 2b to turn the door between the doors as passenger detection. Next, the door control device operates the door drive circuit in the door opening direction to stop the door closing operation and start the door opening operation in accordance with the door opening command 2j from the arithmetic unit.

Similarly, regarding the hall hall button 2e of the elevator, when the passenger who is going to get on the elevator presses the hall hall button 2e while the door 2k is moving in the closing direction, the information is transmitted via the signal line 2f. Control device 2a
Is transmitted to the arithmetic unit 2i inside. The arithmetic unit 2i outputs the signal 2
f, the door closing command 2j is given to the door control device 2b in order to determine that the passenger gets on the elevator and turn over the door.
Is terminated and the door open command 2j is transmitted. Next, the door control device operates the door drive circuit in the door opening direction to stop the door closing operation and start the door opening operation in accordance with the door opening command 2j from the arithmetic unit.

As described above, the door opening / closing control is performed without any problem in the normal state. However, since the photoelectric device 2d is a photoelectric sensor, it is erroneously detected as a passenger due to smoke generated by a fire or the like, and the door is kept open until the smoke disappears, so that the elevator responds to a call from another floor. It may be impossible to drive. Similarly, the elevator hall button is erroneously detected as a passenger pressing the hall call button 2e due to heat at the time of fire, and the door is kept open, so that the elevator cannot be operated in response to a call from another floor. Conceivable. As a preventive measure, a control is performed to forcibly close the door when the photoelectric device 2d has been operating for a predetermined time or more.

FIG. 1 is an operation flowchart for forcibly closing the door according to the present invention.

At step S1, the detection of the hole button is performed, and at step S2, the detection of the photoelectric device is performed. If neither of them is detected, the control according to the present invention is not performed, and the process proceeds to a process for automatically closing the door. I do. When the hall button is detected in step S1 or the photoelectric device is detected in step S2, a predetermined time for forcibly closing the door is counted by the arithmetic unit 2i in FIG.
In step S3, it is determined whether the count has expired.

If the pressing of the hall button is interrupted once after the predetermined time of the forced door closing has been started, the arithmetic unit 2i shown in FIG.
Is reset, and the next time the call button for the hall is pressed, the counting is started again. At this time, if the hall call button is not pressed, a time count for automatically closing the door, which is different from the predetermined time for forcibly closing the door, is continued.

Similarly, if the detection of the photoelectric device is temporarily interrupted after the predetermined time of the forced door closing has been started, the count in the arithmetic unit 2i shown in FIG. 2 is reset and the next time the photoelectric device performs detection, it is reset. Start counting. At this time, if the photoelectric device does not detect, the time count for automatically closing the door, which is different from the predetermined time for forcibly closing the door, is continued. Since the change of the door opening / closing speed when the door is automatically closed is not instructed, the speed becomes a preset standard speed.

When the "close" button on the operation panel in the elevator car is pressed during the time counting, the door closing operation is started before the time counting expires. At this time, no change is instructed for the door opening / closing speed, so that the speed becomes a preset standard speed. If the call button of the hall is pressed in step S1 or the photoelectric device is detected in step 2, the elapse of a predetermined time is waited in step S3.
, A command for the low-speed door closing speed mode is issued to the door control device, and then a door closing command is issued. Thereby, the forced door closing operation is started in step S5. The speed of the door closing operation at this time is the low speed mode instructed in step S4.

The time count value for forcibly closing the door may be a memory area in an arithmetic unit that can be easily changed on site, whereby variations in the getting on / off time depending on the size of the car, nursing homes, etc. It is possible to make adjustments according to usage conditions, such as variations in getting on and off times by users.

[0023]

According to the present invention, when the door of an elevator is forcibly closed, the speed pattern of the door closing can be slowed down. The possibility of collision is reduced, and even if the passenger collides with the door during the closing operation, the impact can be reduced and safety can be improved.

[Brief description of the drawings]

FIG. 1 is a flowchart of a door speed change when a forced door is closed.

FIG. 2 is an overall configuration diagram.

[Explanation of symbols]

2a: elevator control device, 2b: door control device, 2c
... door open / close motor drive circuit, 2d ... photoelectric device, 2e ... hall hall call button, 2f ... signal from call button, 2g ... signal from photoelectric device, 2h ... door speed pattern selection, 2
i: arithmetic unit in the elevator control device, 2j: communication line between the elevator control device and the door control device, 2k: elevator door.

Claims (3)

[Claims] A photoelectric device for detecting a passenger while the door is closed and forcibly turning the door, and an elevator control device having a hall hall call button, wherein the photoelectric device detects the passenger for a predetermined time or more. When the call button of the hall is continuously depressed for a predetermined time and the door is forcibly closed from the door open state, the door closing operation is performed at a speed lower than the normal speed and the door closing operation is performed. Elevator control device. 2. An "open" button on an operation panel in an elevator car during measurement of a predetermined time since the photoelectric device continuously detects a passenger or a call button of a hall is continuously pressed and a predetermined time elapses. 2. The elevator control device according to claim 1, wherein when pressed, the measurement of the lapse of the predetermined time is reset once. 3. A normal door closing speed when the photoelectric device continuously detects a passenger or when each detection is performed for a predetermined time or less even when a call button of a hall is continuously pressed. The elevator control device according to claim 1, wherein: