JPH02106591A - Monitoring device for elevator - Google Patents

Abstract

PURPOSE:To prevent the generation of a door abnormality signal by a method wherein, except a load abnormality signal generated during the generation of a safety signal from a door safety device, only a load abnormality signal from a door overload detecting device is counted. CONSTITUTION:An automatic monitoring device 2 for an elevator 5 is provided with a deciding means which counts an abnormality load signal from a door over-load detecting device 1b except an abnormality load signal generated during the generation of a safety signal from a door safety device 1c and transmits an abnormality signal to a central monitoring device 4 when the counting value exceeds a given value. Thereby, even when a door 5 is in a state in which it can normally open and close, by an action, e.g. arithmetical and continuous working of the door safety device 1c, a load detecting device 1b is actuated, a door abnormality signal is prevented from being erroneously generated and transmitted to the central monitoring device 4.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an elevator monitoring device, and particularly to an elevator monitoring device that monitors abnormalities in elevator doors.

<Prior art> An elevator is equipped with a door overload detection device that issues a load abnormality signal when an abnormal load is detected when the door is opened/closed.When this door overload detection device operates a preset number of times, A door abnormality signal is sent to the monitoring device.

FIG. 3 is a flowchart showing the operation of a conventional elevator monitoring device, and the operation of the conventional elevator monitoring device will be explained with reference to this flowchart.

In step P1 of the flowchart in FIG. 3, it is determined whether the elevator is stopped or not. If the determination in step P1 is YES, the process advances to step P2 and the door overload detection device (OR3) is activated. A determination is made as to whether or not this has been done.

If the determination in step P2 is YES, the process proceeds to step P4, where the 17 times the door overload detection device operates is measured, and in step P5, it is determined whether or not the number of operations has become N times or more. If the determination in P5 is '1' ES, a door abnormality signal is issued to the central monitoring device in step P6.

Further, if the determination in step P1 is No, step P
Proceeding to step 3, the operation 1''jjJ count 17i11 value of the door overload detection device is reset and returns, and returns if the judgment in step P2 (i) is NO.

<The invention or the problem to be solved>
Safety devices are installed, and when the door moves, there is an object between the door and the wall of the elevator, such as the handbag of a full elevator user. A safety device (safety shoe) is pushed in to detect the one-support clamping body.

When the object to be clamped is detected, the door safety device issues a safety signal, and the elevator door moves in reverse to ensure the safety of the elevator users.9This door safety device
If you manually activate it repeatedly or press it continuously, it will put a strain on the tip of the door body, which may cause the door overload detection device to activate.

For this reason, if the above-mentioned situation is repeated, a door abnormality signal may be issued to the central monitoring device even though the elevator door is normally reversing.

The present invention has been made in view of the current situation in which elevator door abnormality signals are generated as described above, and its purpose is to monitor elevators so that door abnormality signals are not generated erroneously while the doors can be opened and closed normally. The goal is to provide equipment.

<Means for Solving the Problems> In order to achieve the above object, the present invention provides a door overload detection device that detects an abnormal load when an elevator door is opened/closed and issues a load abnormality signal, and a a door safety device that is retractable in and out of the door, detects the presence of an object to be held between the door and the wall of the elevator when the door is moving, and issues a safety signal to reverse the door; In the elevator monitoring device, an abnormality of the door is determined based on the load abnormality signal, and when it is determined that the door is abnormal, a door abnormality signal is issued to a central monitoring device. Excluding the load abnormality signal that occurs when the signal is generated, the number of occurrences of the load abnormality No. 13 is counted, and when the counted value exceeds a predetermined value, the door abnormality signal is generated. ing.

[Function] - In the present invention, the door safety device detects a clamped object and issues a safety signal, and even if the door overload detection device is activated when the door of the construction beta is inverted, the ``Excluding the load abnormality signal emitted at this time, count the load abnormality signal emitted from the l.A overload detection device 6 Then, the counted value of the load abnormality signal exceeds a preset predetermined value. Then, a door abnormality signal is issued from the determining means to the central monitoring station 'A'.

In this way, the false overload signal generated when the door overload detection device is artificially activated is removed, and the door abnormality signal is always transmitted to the central monitoring device in a state where no false signal is generated. .

<Example> Hereinafter, an example of the present invention will be described in detail with reference to FIGS. 1 and 2.

Here, FIG. 1 is a block explanatory diagram showing the +14 configuration of the main part of the embodiment of the present invention, and FIG. 2 is a flowchart showing the operation of the embodiment of the present invention.

As shown in FIG. 1, a safety shoe, that is, a door safety device IC and a door overload detection device 1b are attached to the door 6 of the elevator 5, and a safety signal emitted from the door safety device 1c and a door overload detection device A load abnormality signal emitted from the elevator 1b is input to the control panel 1 of the elevator.

This door safety device 1c is activated when, for example, a handbag of an elevator user is present as a clamped object between the doorer and the wall of the elevator when the doorer is moving, it is pushed in by the doorer's movement, and it issues a safety signal. The door controller is configured to operate in reverse.

Furthermore, when an abnormal load is applied to the door 5 during opening and closing, the door overload detection device 1b detects the abnormal load and issues a load abnormality signal.

The control panel 1 includes a contact 1b1 that is turned ON in response to a load abnormality signal issued from the door overload detection device 1b, and a contact 1b1.
, is provided with a signal generator 1b2 whose output signal has a logical value of "1" when it is turned on.

In addition, the control panel 1 is turned ON by a safety signal emitted from the door safety device 1c, and remains ON until the door 5 is completely opened.
A signal generator 1 in which the logical value of the output signal becomes 1゛° when the contact 1c1 that maintains the state and this contact 1c are turned on.
c2 is provided.

The control panel 1 includes 81PU1 that controls the operation of the elevator.
f, and this MPU 1f includes a memory le that stores the operating state of the elevator, the operating state of the door overload detection device 1b, and the operating state of the safety device 1c, and a signal generator 1.
A communication boat 1d is provided which receives the output signal of the signal generator IC2 and the signal generator IC2 and outputs the information stored in the input buffer 1g and the memory 1e to the outside.

Further, the elevator automatic monitoring device 2 is provided with an MPtJ2g that controls the automatic monitoring device 2, and this MPU2
A memory 2f stores program control information for the automatic monitoring device 2 and elevator control information read out from the memory 1e, and a memory 2f stores information stored in the memory 1e through the communication boat 1d. A communication boat 2d for storing in the memory 2f and a communication boat 2e for outputting output signals from the automatic monitoring device 2 to the outside are connected.

The signal line 7 is connected between the communication boat 1d and the communication boat 2d.
The communication boat 2e and the central monitoring device 4 are connected via a communication line 3.

In an embodiment of such a configuration, Aq P Ll 2
g and the memory 2f constitute a determining means.

The operation of the embodiment will be explained according to flowchart 1- in FIG.

When the overload detection device 1b issues a load abnormality signal and the door safety device IC issues a safety signal, the contacts 1b and 1cl are turned ON, respectively.

Therefore, the logical values of the output signals of the signal generator 1b2 and the signal generator IC2 become "1", and the load abnormality signal and safety signal are respectively stored from the input buffer 1g and written into the memory 1e.

Next, in response to a command from the MPU 2g of the automatic monitoring device 2, a command is issued from the MPU 1f of the control v4 panel 1, and the load abnormality signal and safety signal are read out from the memory 1e, and the communication boat 1d, signal line 7, and communication boat 2d are read out from the memory 1e. Via
The data is transferred to and written into the memory 2f of the automatic monitoring device 2.

In step S1 of flowchart 1 in FIG.
From the operation status stored in f, it is determined whether or not the elevator is in a stopped state. If the determination in step S1 is YES, the process proceeds to step S2 and it is determined whether the overload detection device 1b has operated or not. A determination is made.

If the determination in step S2 is YES, it is determined in step S4 whether or not the door safety device 1c has operated, and if the safety signal is not stored in the memory 2f, step S4
The determination becomes NO, and the process advances to step S5 to store the memory 2f.
The count value of the load abnormality signal written in is incremented by one.

Next, the process proceeds to step S6, where MPU2g compares the number of operations of the overload detection device 1b with a preset number of operations N, and determines that the number of operations of the overload detection device 1b exceeds N. Then, the process advances to step S7, and a door abnormality signal is transmitted from the communication boat 2e of the automatic monitoring device 2 to the central monitoring device 4 via the communication line 3.

Further, if the determination in step S1 is No, step S
3, the number of operations of the overload detection device 1b is reset, and the process returns to step s1, where the determination in step S2 is No.
Similarly, the process returns to step S1.

Further, if the determination in step S4 is YES, the process returns to step S1 to prevent false detection due to artificial activation of the overload detection device 1b, and if the determination in step s6 is NO, the door abnormality signal is still issued. ! H. It is determined that there is no need, and the process similarly returns to step S1.

In this way, according to the embodiment, the door safety device IC is activated and the elevator door 5 performs a normal reversing operation, so that the overload detection device 1b is activated, and the central monitoring device 4 is notified of an erroneous door abnormality. Signals are sent or prevented.

Effects of the Invention> As explained in detail above, according to the present invention, it is possible to prevent the overload detection device from erroneously operating due to the activation of the door safety device and transmitting an erroneous door abnormality signal to the central monitoring device. No elevator monitoring equipment is provided.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of the main parts of an embodiment of the present invention, FIG. 2 is a flowchart showing the operation of the embodiment of the present invention, and FIG. 3 is a flowchart showing the operation of the elevator monitoring device since 1JC. Char is ~. 1... System 011 board, 2... Automatic monitoring device,
3...Communication line, 4...Central monitoring device, 1b
...Door overload detection device, IC...Door safety device, 1b1.1c1...Contact, lb2.
1c2...Signal generator, 1d, 2d, 2e...
...Communication boat, 1e...Memory, 1f.
...MPU, 1g...Input buffer, 2f...Memory, 2g...MPU. Figure 2

Claims (1)

[Claims] (1) A door overload detection device that detects an abnormal load when an elevator door is opened/closed and issues a load abnormality signal; a door safety device that detects the presence of a clamped object between the walls of the elevator and issues a safety signal to reverse the door; an abnormality of the door is determined based on the load abnormality signal; When it is determined that the door is abnormal, a door abnormality signal is issued to the central monitoring device.In the elevator monitoring device, the number of occurrences of the load abnormality signal is calculated, excluding the load abnormality signal that occurs when the safety signal is generated. An elevator monitoring device characterized by comprising a determining means for counting and issuing the door abnormality signal when the counted value exceeds a predetermined value.