KR0179886B1 - Failure detection equipment of an elevator - Google Patents

Abstract

The present invention relates to an elevator failure detection apparatus. In the related art, a failure is detected by evaluating whether there is an abnormality in the instantaneous state variables, a change time, a combination of state variable values, etc. of the elevator controller, so that only one-dimensional failure can be detected. There is a problem that can not detect many failures. Therefore, the present invention expands the types of failures that can be automatically detected by analyzing the instantaneous values of elevator state variables and their history statistically, and predicts the elevator failures by analyzing the history of abnormalities in advance to prevent failures in advance. This prevents passengers from using the elevator safely and comfortably.

Description

Elevator fault detection device

1 is a block diagram of a conventional elevator failure detection device.

2 is a fault diagram of the elevator controller of FIG.

3 is a detection process diagram showing a normal case and an abnormal case in the failure detection of the elevator controller of FIG.

4 is a table of fault detection types and corresponding detection conditions.

5 is a block diagram of an elevator failure detection apparatus of the present invention.

6 is an operation flowchart of the intelligent diagnostic apparatus of FIG.

FIG. 7 is a table showing the distribution of abnormal call demands for fault detection of hole calling lamps stored in the learning system in the intelligent diagnosis apparatus of FIG.

* Explanation of symbols for main parts of the drawings

10 car 20 lift controller

30: monitoring terminal 40: maintenance center

50: intelligent diagnostic device

The present invention is to allow users to always use the elevator safely and comfortably by immediately recognizing the failure of the elevator, in particular to automatically notify the administrator or maintenance center of the failure of the elevator in operation immediately after occurrence. Elevator failure detection device for recovery by.

Conventional elevator failure detection device configuration, as shown in Figure 1, the car for protecting the passengers safely; An elevator controller for controlling various input / output of the car and identifying an abnormal state of the state variable; A monitoring terminal that binds one or more elevator controllers to monitor a failure of the elevator; Report the failure reported from the monitoring terminal immediately consists of a repair sensor for giving a work order to the site worker.

The elevator controller includes a speedometer for controlling a motor to drive the car vertically or horizontally; A driving system that receives commands from various input devices in the platform and the car and controls the car and various output devices; It consists of a fault gauge that detects an abnormal condition of the elevator state variable and sends it to the monitoring terminal.

Looking at the prior art configured as described above in detail.

When a user presses a button of a desired floor through an input device in a platform or a car to move to a desired floor, the elevator controller 20 recognizes this and drives the motor to drive the car 10 up or down or horizontally on its speedometer. In addition, the driving system controls the car 10 and various output devices.

In this way, the car 10 is driven.

At this time, the fault gauge of the elevator controller 20, as shown in Figure 2, the contacts of safety-related devices are connected in series to detect the abnormality of the safety system by reading the contacts of the final stage.

For example, a governor switch for overspeed detection and a door open switch for detecting a door opening in a platform are connected in series. If any one of them is open, a safety fault detection contact opens to detect a problem in the safety system. do.

And, by measuring the size and change time of the important state variables necessary for the control using a microprocessor of the elevator controller 20 to detect a failure when the deviation greatly exceeds the tolerance range than normal.

For example, if the time until the door is fully opened after the door opening command is issued is detected as the door open time is very long as in (b) compared to the normal case as in (a) of FIG. If the temperature rises abnormally detects that the door motor is overheated and reports to the monitoring terminal (30).

Then, the monitoring terminal 30 monitors the state variable values reported from the fault gauge of one or more elevator controllers 20 and detects a failure when the combination of state variable values is different from the normal case, and repairs the code accordingly. Output to (40).

When the failure is detected in the above, the failure type according to the failure detection condition is shown in FIG. 4, and when such a failure occurs, the monitoring terminal 30 sends a code according to the failure type to the maintenance center 40.

Then, the maintenance center 40 immediately gives a work order to the site worker to perform troubleshooting together with the elevator inspection.

However, in the prior art as described above, the failure is detected by evaluating whether there are any abnormalities in the instantaneous state variables, the change time, the combination of the state variable values, etc. of the elevator controller, so that only one-dimensional failure can be detected. There is a problem that many failures cannot be detected.

For example, if a safety shoe switch on both sides of a door fails to prevent passengers from getting stuck in the door, the safety show switch inputs must be significantly reduced over the same time period as usual to prevent the safety show from failing. Can be.

Accordingly, an object of the present invention for solving the above problems is to expand the types of failures that can be automatically detected by statistically analyzing the instantaneous values of elevator state variables and their histories, and the history of abnormal phenomena. By estimating the elevator failure by predicting the failure in advance to prevent the failure in advance to provide an elevator failure detection device that enables the passengers to use the elevator safely and comfortably.

The elevator fixed detection device configuration of the present invention for achieving the above object, as shown in Figure 5, the car for protecting the passengers safely; An elevator controller for controlling various input / output of the car and identifying an abnormal state of the state variable; An intelligent diagnosis device that infers a failure based on the collected data by monitoring a failure state and an abnormal state of an elevator in a building, and automatically transmits the failure to a maintenance sensor when a failure occurs; When the failure of the on-site elevator is reported from the intelligent diagnostic device is configured as a maintenance center to give a work order to the site workers immediately.

When described in detail with respect to the operation and effect of the present invention configured as described above.

The operation of the car 10 and the elevator controller 20 is as described above, and in the fault gauge of the elevator controller 20, the car 10 may not be operated when there is an error in safety. By checking the state of the relay contacts connected in series in hardware, check the safety system for abnormality, or analyze the state variable size and time of the elevator controller 20 using a microprocessor and compare the combinations of the signals with the normal cases. The failure of the elevator is detected, the abnormal state of the elevator is detected, and transmitted to the intelligent diagnosis device 50.

Then, the intelligent diagnostic device 50 reports the abnormal state of the elevator reported from the fault gauge of the elevator controller 20 to the maintenance center 40 to immediately fix the elevator.

And, if the history of the abnormal state of the elevator state variable is reported through the fault gauge as shown in FIG. 6, the intelligent diagnostic apparatus 50 makes a score distribution table for a certain period of time in the learning system, and records the measured number in the inference system. By analyzing the distribution table, the failure point and the failure point are inferred based on the point where the frequency of the abnormal phenomenon greatly deviates from the normal distribution and the persistence of the abnormal frequency, and reported to the maintenance center 40 to prevent fixation in advance.

For example, in the fault inference process of the seventh floor down call registration display lamp, the intelligent diagnosis apparatus identifies an abnormal state in which the same call is registered again from the fault gauge of the elevator controller 20 in the state where the seventh down call is registered. When (50) is reported, his learning system creates and keeps the distribution table of the water for a certain period as shown in Fig. 7, and the inference system analyzes the distribution of the water distribution table to find the point and abnormality where the frequency of abnormality deviates greatly from the normal distribution. Based on the frequency persistence, the failure and failure point of the seventh floor call registration lamp are inferred.

As a result of the inference, when the failure point is inferred, the intelligent diagnosis apparatus 50 reports the failure point to the maintenance center 40 and checks the state of the elevator in advance to prevent the failure in advance.

As described in detail above, the present invention expands the types of failures that can be automatically detected by analyzing the instantaneous values of elevator state variables and their histories, and analyzes the history of abnormalities in advance to prevent elevator failures. By preventing the failure in advance, the passengers can use the elevator safely and comfortably.

Claims (2)

Fault detection device that diagnoses the faults reported from the monitoring terminal that monitors the faults of the elevator by binding one or more elevator controls and gives work instructions according to the report contents. Elevator failure detection device comprising a device. The system of claim 1, further comprising: a learning system for statistically learning an abnormal state of the elevator reported from the fault system; Elevator failure detection device, characterized in that the inference and prediction of the failure of the elevator according to the data and inference rules accumulated in the learning system is made of the inference system.