JPH1045358A - Failure sensing device for elevator door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a failure sensing device which can notify eventual necessity for holding the door open condition for over the specific time without taking it as a failed state. SOLUTION: A failure sensing device for an elevator door is composed of a door opening time extension control part 12 to emit a door open signal when door open extend buttons 10a and 10b in the door opened condition and when a certain specified time for extended door open time has passed, a door condition monitoring part 2 which monitors the door open/closed condition, emits an appropriate signal according to the given condition, and receives a door open signal from the door opening time extension control part 12, a failure sensing part 4 which sends out a fail signal on the basis of the signal given by the monitoring part 2, and an automatic notification part 8 which sends the received door open signal and fail signal to a monitor center, where judgement is passed for the cause of the door not being shut, whether it is due to failure or extension of the door open time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door abnormality detecting apparatus, and more particularly to an elevator door abnormality detecting apparatus for accurately determining an abnormality when an elevator door is open.

[0002]

2. Description of the Related Art Various types of safety devices are installed in an elevator device. In some cases, the safety device is connected to the safety device, and safety management is performed by monitoring the operation state of the elevator device from a remote monitoring center. Is going. For example, when an elevator door remains open for a long time and does not close for a long time, the state is reported to a monitoring center via a public network, and it is recognized that a failure has occurred.
Then, a service technician is dispatched to the site to perform maintenance and inspection of the elevator device, thereby achieving quick recovery.

FIG. 5 is a block diagram showing a conventional abnormality detecting device installed in an elevator apparatus.
FIG. 5 shows a part of a device configuration for monitoring the opening / closing state of an elevator door and detecting the abnormality, among the abnormality detecting devices. Door monitoring unit 2 that outputs a signal according to
An abnormality detection unit 4 that receives a signal generated by the door state monitoring unit 2 and detects occurrence of an abnormality based on the signal, and an automatic alarm unit 8 that transmits a signal generated by the abnormality detection unit 4 from a communication line 6. It is shown. Since the communication line 6 is connected to the public line, the automatic alerting section 8 sends out the signal to the monitoring center through the public line.

Next, the operation of the conventional abnormality detecting device will be described.

When the abnormality detecting section 4 recognizes, for example, that the state in which the elevator door is not closed for several minutes by a signal from the door state monitoring section 2, it compares the signal state with an abnormality recognition item stored therein. Thus, it is determined that the state of the elevator door, that is, the state in which it does not close for several minutes, is abnormal. When the abnormality detecting unit 4 detects an abnormality that the door does not close for the normal set time in this way, it sends an abnormality detection signal to that effect to the automatic alarm unit 8. The automatic alerting section 8 sends the received abnormality detection signal to the monitoring center.

[0006] The monitoring center determines from the received abnormality detection signal that the elevator has failed, and takes measures such as sending a service person to the site.

[0007]

However, even in the case where the work is performed with the door open, such as when moving or cleaning, the conventional apparatus does not require the elevator to fail. An abnormal detection signal indicating that the door will not close was sent to the monitoring center. Therefore, the monitoring center may erroneously recognize that a failure has occurred by receiving the abnormality detection signal, and may issue a useless dispatch command to service personnel.

Further, even if a worker such as a moving person wants to notify the monitoring center immediately before the start of the operation that the door is to be opened for a time longer than the normal door opening time, there is no means in the conventional apparatus. Could not notify.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to make an abnormal state when it is necessary to maintain a door open state for a predetermined time or more. It is an object of the present invention to provide an abnormality detection device that can notify the user of the fact without any problem.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an elevator door for notifying a monitoring center for managing an elevator apparatus when an abnormality of the elevator door is detected. In the abnormality detection device of the above, an operating means operated to extend the door opening time, and a door opening extension which sends a door opening signal when the operating means is operated and when a predetermined door opening extending time elapses in the door open state. Control means for monitoring the open / closed state of the elevator door, and sending an abnormality detection signal when the door open state continues for a predetermined time or more and when a door open signal is received from the door open extension control means; Means, and a notifying means for sending a signal received from the door state monitoring means or the door opening extension control means to a monitoring center, and sending a door opening signal to the monitoring center when the door opening time is extended. To And butterflies. Thus, if the door continues to be open and does not close, it is possible to notify the monitoring center whether the abnormality is abnormal or the door open time is extended.

[0011] Further, there is provided a notifying means for notifying the user that the predetermined extended time is approaching. Thus, the fact that the door opening time has expired can be notified before the expiration, so that an operation for re-extending the door opening time can be performed before the expiration of the door opening time.

[0012]

Preferred embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 FIG . FIG. 1 is a block diagram showing an embodiment of an abnormality detection device for an elevator door according to the present invention, and FIG. 2 is a schematic diagram of an elevator device using the abnormality detection device. Fig. 2
Is installed in the machine room 22 above the hoistway 20 as shown in FIG. Further, FIG. 2 shows a car 24, a door 26, and a landing 28.

In FIG. 1, a door condition monitoring unit 2, an abnormality detection unit 4, a communication line 6, and an automatic alarm unit 8 have substantially the same configuration as the conventional example and operate similarly. However, the door state monitoring unit 2 of the door state monitoring unit 2 and the abnormality detection unit 4 forming the door state monitoring unit in the present embodiment also receives a door opening signal from a door opening extension control unit 12 described later. . The automatic alarm unit 8 is a notifying unit that sends out a signal received from the abnormality detecting unit 4 or the door opening extension control unit 12 to the monitoring center. In the present embodiment, in addition to the above-described configuration, a car door extension button 10a as an operating means operated to extend the door opening time is provided.
10b, and a door-open extension control unit 12 as a door-open extension control unit that sends a door-open signal when the car door-open extension button 10 is operated and a predetermined door-open extension time elapses in the door-open state. Configuration. As shown in FIG. 2, the car door open extension button 10a is
b is installed in a management room (not shown). When the door opening extension control unit 12 receives an instruction to extend the time of the door opening state by pressing the car door opening extension button 10, the timer 14 as a timer means for counting a predetermined extension time from that time. And a door opening signal generating section 16 for transmitting a door opening signal at a predetermined timing.

A feature of this embodiment is that a car door opening extension button 10 is provided, and when it is desired to keep the door open for a predetermined time or more, the car door opening extension button 10 is depressed. That is, the door can be kept open for a predetermined time and the monitoring center can be notified of this fact. As a result, even if the monitoring center receives the abnormality detection signal transmitted when the door does not close for the normal set time or more, if it receives the door open signal before that, it will mistake the door as a malfunction. There is no need to dispatch service personnel to the site unnecessarily.

Next, the operation of this embodiment will be described with reference to the flowchart shown in FIG.

When the door 26 is open, the user can open the car or the car door extension button 10a installed in the control room.
Alternatively, the door opening time is extended by pressing the car door opening extension button 10b (step 101). Door opening extension control unit 1
2 is activated when the car door opening extension button 10 is pressed, the extension request of the door opening time is enabled, the timer 14 is initialized, and the timer for the predetermined extension time is started (step 10).
2) The door opening signal is sent to the automatic alarm 8 by the door opening signal generator 16 (step 103). The instruction by pressing the car door extension button 10 when the door is not in the door open state is invalid and does not perform any operation. Upon receiving the door opening signal, the automatic alarming unit 8 sends a notification to the monitoring center via the communication line 6 (step 104). This allows the monitoring center to know that the door opening time has been extended, and therefore does not erroneously determine that a failure has occurred even if the monitoring center receives an abnormality detection signal indicating that the door 26 does not close during this extension. .

A predetermined door extension time is set in the timer 14 in advance. If the car door extension button 10 is pressed again within the extension time (steps 105 and 106), the timer 14 is reset. The counting of the extension time is started from the beginning (step 103). Thereby, the door opening time can be extended again. If a conventional door closing button (not shown) is pressed within the extended time (step 10).
7), the door 26 is forcibly closed, and the process of extending the door opening ends. If the door closing button is not pressed, the timer 14 keeps time until a predetermined extension time.

When the extension time has elapsed (step 10)
5), the door opening extension control unit 12 sends a door opening signal to inform the door state monitoring unit 2 that the door opening extension time has elapsed (step 108). Normally, the door 26 automatically closes and becomes closed when the extension time elapses. Therefore, the door state monitoring unit 2 recognizes that the door 26 is normally closed after receiving the door open signal. Should do it. Therefore, if the door 26 is closed without any abnormality (step 109), the abnormality detection unit 4 can determine from the signal from the door state monitoring unit 2 that the abnormality has not occurred in the door 26. The process at the time of extending the door opening without issuing a signal ends.

On the other hand, when detecting that the door is not closed even after receiving the door open signal (step 109), the door state monitoring unit 2 sends a signal to that effect to the abnormality detection unit 4. As a result, the abnormality detection unit 4 determines that an abnormality has occurred in the door 26, and sends an abnormality detection signal to the automatic alarm unit 8 (Step 110). Then, upon receiving the abnormality detection signal, the automatic alarming unit 8 sends a notification to the monitoring center through the communication line 6 to notify the monitoring center (step 111).

At this time, since the monitoring center receives the abnormality detection signal after the elapse of the known door opening extension time, the monitoring center
Can not be closed because it is not an extension of the door open time but an abnormality. This allows
The service staff can be dispatched to the site where the abnormality has occurred.

As described above, according to the present embodiment, when the car door opening extension button 10 is pressed and an instruction to extend the door opening time is issued, a door opening signal is transmitted to the monitoring center. Therefore, when the monitoring center receives the abnormality detection signal indicating that the door does not close, if the door opening signal is received before the reception, it is accurately determined that the door opening time has been extended rather than a failure. You can judge. To receive the door open signal before receiving the abnormality detection signal means to receive the abnormality detection signal within a known extension time after receiving the door open signal.

As described above, the monitoring center can know the cause of the door not closing for more than the normal set time by checking whether or not the door open signal has been received in advance. Accordingly, the fact that the door is kept open can be prevented from being erroneously recognized as having occurred. As a result, the service staff need not be dispatched unnecessarily.

Embodiment 2 FIG . In the first embodiment, when it is desired to re-extend the door opening time without completing the work within the extension time, it is necessary to press the car door opening extension button 10 again within the extension time. Since the time is not usually notified, the timing of the re-press is not known. Therefore, in the present embodiment, a notifying unit is provided as shown in FIG. 4 so as to notify the user that a predetermined extended time, that is, an expiration time (time over) of the extended time is approaching. It is characterized by doing. The notification means in the present embodiment is composed of a generally used auto-announcement device 30 and a speaker 32 attached to the auto-announcement device 30.

That is, the automatic announcement device 30 in the present embodiment monitors the time measured by the timer 14 and, when detecting that the time is approaching the time over, notifies the worker of the fact by sound output from the speaker 32. As a result, it is possible to urge the car door extension button 10 to be pressed again.
According to the flowchart shown in FIG.
Before the procedure of pressing the car door extension button 10 in 6, the notification processing in the present embodiment is entered.

Thus, the worker can carry out the work without worrying about the elapse of the extension time, that is, the timing of re-pressing, and can smoothly extend the door opening time again.

In this embodiment, the user is notified that the time is approaching the time when the time is over by sound. However, the present invention is not limited to this.
It can also be notified by flash light.

In each of the above embodiments, the normal door opening time during which the elevator apparatus is kept open, the time until the abnormality detecting section 4 issues the abnormality detection signal, the door opening extension time, In 2, a time value called a set time for starting an announcement that the extension time is approaching is set, respectively, and this set time value can be set appropriately.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of an abnormality detection device for an elevator door according to the present invention.

FIG. 2 is a schematic diagram of an elevator apparatus using the abnormality detection device according to the first embodiment.

FIG. 3 is a flowchart illustrating a process when a door opening is extended according to the first embodiment.

FIG. 4 is a block diagram showing a main part of an elevator door abnormality detecting device according to a second embodiment of the present invention.

FIG. 5 is a block diagram showing a conventional elevator door abnormality detection device.

[Explanation of symbols]

2 Door condition monitoring unit, 4 abnormality detection unit, 6 communication line, 8
Automatic alarming unit, 10a, 10b Car door open extension button, 12
Door opening extension control unit, 14 timer, 16 door opening signal generation unit, 20 hoistway, 22 machine room, 24 cars, 26
Doors, 28 halls, 30 auto announcement devices, 32
Speaker.

Claims (2)

[Claims] 1. An elevator door abnormality detecting device for notifying a monitoring center for managing an elevator device when the occurrence of an abnormality of an elevator door is detected. A door-open extension control means for transmitting a door-open signal when the operating means is operated and when a predetermined door-open extension time elapses in a door-open state; and A door state monitoring unit that sends an abnormality detection signal when the open state continues and when a door opening signal is received from the door opening extension control unit, and a signal received from the door state monitoring unit or the door opening extension control unit And a notifying means for sending a signal to the monitoring center, wherein when the door opening time is extended, the door opening signal is sent to the monitoring center. 2. The elevator door abnormality detecting device according to claim 1, further comprising a notification unit for notifying a user that the predetermined extended time is approaching.