JP4372602B2 - Elevator abnormality detection device - Google Patents

Description

  The present invention relates to an elevator abnormality detection apparatus that records a car position where an abnormality has occurred and displays the car position during an inspection operation.

FIG. 6 is a block diagram showing a conventional elevator abnormality detection device having the same configuration as the elevator automatic inspection operation device described in Patent Document 1. In FIG.
That is, the car sound detection device 41 detects sounds generated around the car. The car vibration detection device 42 detects vibration sensed by the car. The abnormality detection control device 43 is a device for recognizing whether inspection or repair is necessary among signals from the car sound detection device 41 and the car vibration detection device 42. The abnormality detection car position storage device 44 stores the car position where the abnormal sound or abnormal vibration recognized by the abnormality detection control device 43 has occurred. The operation control device 45 performs normal automatic driving for transporting passengers, and simultaneously provides a car position signal to the abnormality detection control device 43 when a car noise or car vibration occurs, and the automatic inspection operation control circuit operates. When this occurs, the automatic inspection operation is performed up to the car position stored in the abnormality detection car position storage device 44.
According to the above-described conventional elevator abnormality detection device, when abnormal sound or abnormal vibration is detected, the car is operated up to the car position where the abnormality has occurred, so that the cause of the abnormality can be easily identified.

JP-A-5-70053 (paragraph numbers 9 to 12, FIG. 1)

As described above, in the conventional elevator abnormality detection device, the car is operated to the position where the abnormality occurs, so that the cause of the abnormality may be easily determined depending on the type of abnormality.
However, abnormal sounds or abnormal vibrations may be closely related to the raising / lowering speed of the car. In such a case, simply driving to the car position where the abnormality has occurred cannot reproduce the conditions of the abnormality and grasp the state of the abnormality.
Therefore, when an operation that reproduces the occurrence of an abnormality is performed, there is a problem in that there is a possibility that the vehicle may pass through without sensing the abnormality in a state where there is no information regarding the abnormality occurrence position.

  The present invention has been made to solve the above-described problems, and displays the car position where the abnormality has occurred in a predictable manner by changing the car position according to the distance from the current car position. Thus, an object of the present invention is to provide an elevator abnormality detection device that does not pass through without detecting an abnormality occurrence position.

The elevator abnormality detection device according to the present invention detects a car sound detecting means for detecting a sound generated by a car or a vibration generated by a car during the raising and lowering of the car and the opening and closing of the car door under automatic operation for transporting passengers. When the car sound detected by the car vibration detecting means and the car sound detecting means or the car vibration detected by the car vibration detecting means exceeds a predetermined threshold, the car position or operation is regarded as abnormal as the car sound or car vibration. Under the operation of abnormality data storage means that stores the driving situation including direction and car speed, and the inspection operation for maintenance and inspection of the elevator, the elevator is operated in the operation situation in which an abnormality has occurred, based on the stored contents of the abnormality data storage means, and abnormality detection control means for reproducing the abnormal state, when an abnormality state is reproduced by the abnormality detection controlling means, the generated squirrel position of abnormalities, the current position , An abnormal position display means for displaying in a manner that varies depending on the difference value between those provided with.

According to the invention, during the inspection operation of the elevator, it is possible to predict the generated squirrel position of abnormality, it is readily sense the abnormality occurrence position, an effect that.

Embodiments of the present invention will be described below with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, and duplication of description was omitted.
Embodiment 1 FIG.
1 to 5 show a first embodiment of the present invention.
FIG. 1 is a block diagram showing an entire elevator abnormality detection apparatus. In the figure, the operation control device 1 includes an automatic operation control circuit that performs normal automatic operation for transporting passengers, and an inspection operation control circuit that performs maintenance and inspection of the elevator. The car sound detection means 2 detects sound generated around the car. The car vibration detection device 3 detects vibration sensed by the car. The abnormality detection control device 4 receives signals from the car sound detection means 2 and the car vibration detection means 3 to identify whether or not there is an abnormality. When the abnormality is identified, the car position and the driving situation, that is, the driving direction and the car speed are received from the driving control device 1 and recorded together with the abnormal data in the abnormality storage means 5.
The operation switching means 6 is normally set to automatic operation, and abnormality data is always collected by the abnormality detection control device 4. When the inspection operation is set, the operation control device 1 operates the elevator based on the speed command from the abnormality detection control device 4. Accordingly, the abnormal state can be reproduced in the operation state recorded in the abnormality storage means 5. Further, the car position where the abnormality has occurred is read from the abnormality storing means 5 and the car position where the abnormality has occurred is displayed on the abnormal position display means 7 in a manner that changes according to the difference value from the current position of the car.

  FIG. 2 is a block diagram showing an electric circuit of the elevator abnormality detection device. In the figure, a hoisting machine 11 is connected to a hoisting motor 12 via a shaft, and an encoder 13 is attached to the shaft to detect the position of the car 16. A main rope 14 is wound around the hoisting machine 11, a car 16 is suspended on one side, and a counterweight 15 is suspended on the other side. The car 16 is provided with a car door 17, a car operation panel 18, an operation changeover switch 19 assembled integrally with the car operation panel 18, and an in-car indicator 20. The operation changeover switch 19 switches between automatic operation and inspection operation.

The car upper switch 21 is used by an attendant for performing an inspection operation on the car. An operation switch and a stop switch, and an UP button and a DOWN button for moving the car 16 in the upward or downward direction are provided. Is provided. Here, it is assumed that a lamp is provided in this button.
A car sound detector 22 for detecting a car sound Nc emitted from the periphery is provided on the car 16. A car vibration detector 23 that detects the car vibration Vc is provided under the car 16.
Further, the landing 25 is provided with a landing door 26, a landing button 27, and a landing indicator 28.
It should be noted that the in-car indicator 20, the UP button, the DOWN button, and the landing indicator 28 of the car up switch 21 are activated during the inspection operation and change according to the difference value between the car position where the abnormality occurred and the current position of the car 16. It also has a function as an abnormal position display means 7 that blinks.

Next, the elevator is controlled by a microcomputer, and includes a CPU 31, a ROM 32, a RAM 33 and an input / output device 34 connected to the CPU 31.
The ROM 32 has a speed control program 32 a for controlling the hoisting motor 12, a car position detection program 32 b for calculating the position of the car 16 based on a signal from the encoder 13, and a signal from the encoder 13. The car speed detection program 32c for detecting the speed of the car 16, an operation control program 32d, an abnormality detection program 32e shown in detail in FIG. 4, and an abnormality occurrence position display program 32f shown in detail in FIG.
The RAM 33 includes a temporary data memory 33a in which temporary data is temporarily recorded, and an abnormal data memory 33b shown in detail in FIG. Signals are exchanged between the microcomputer and the external device via the input / output device 34. Further, the speed control circuit 35 controls the hoisting motor 12 by generating an alternating current of variable voltage and variable frequency based on a signal from the speed control program 32a.

Here, the operation control program 32d further includes a call registration program for registering a call signal from the landing button 27 and the car operation panel 18, an operation direction determination program for causing the car 16 to respond to the call, and a hoisting motor. 12 includes a start command program that issues a start command to 12 and a door open / close command program that commands opening and closing of the car door 17.
Note that the speed control program 32a and the operation control program 32d are incorporated for automatic operation and inspection operation, respectively, and are generally used, and detailed description thereof is omitted.
Note that it is conceivable that the abnormality targeting the car sound Nc or the car vibration Vc repeatedly occurs. Therefore, if an abnormality is detected at the car position Pc, the abnormality occurrence zone Zn is set by providing a certain tolerance δ above and below the car position Pc. Subsequent anomalies occurring in the anomaly occurrence zone Zn are not recorded in the anomaly data memory 33b because there is a high probability that the cause of occurrence is the same.

FIG. 3 is a data table showing the recorded contents of the abnormal data memory 33b. When the abnormal data is detected, the recording address of the existing data is sent first, and the car sound Ng or the car vibration Vg, which is newly generated abnormal data, is recorded at the head address. The data structure includes abnormality data Ng and Vg, a car position Pg when the abnormality occurs, an operation state Dg of the car 16, and an occurrence time Tg.
In addition, the code | symbol which shows the data recorded on the abnormal data memory 33b set the tail to "g", and the code | symbol which shows the data before recording set the tail to "c", and distinguished both.

  FIG. 4 is a flowchart showing the abnormality detection operation. This operation is repeated at predetermined time intervals. If it is determined in step S11 that the elevator is operating automatically, the process proceeds to step S12. In steps S12 and S13, it is checked whether the elevator is moving up and down or whether the car door 17 is being opened or closed. If none of these apply, the process is terminated. If any of them is in operation, the process proceeds to step S14, and the level of the car sound Nc from the car sound detector 22 is determined. That is, when the car sound Nc is equal to or higher than the predetermined threshold value α, it is considered abnormal. In step S15, the current car position Pc and driving situation Dc, that is, the car speed and the driving direction are detected.

  In step S16, it is checked whether or not the car sound Ng is recorded in the abnormal data memory 33b. If not recorded, the process proceeds to step S17, and the car sound Nc, the car position Pc and the driving situation Dc at the time of occurrence are recorded in the abnormality data memory 33b as newly generated abnormal sounds. If the car sound Ng has already been recorded in the abnormal data memory 33b, the process proceeds from step S16 to step S18, and the car position Pg and the driving situation Dg related to the car sound Ng are read from the abnormal data memory 33b.

  In step S19, the car position Pc at which the car noise Nc newly made abnormal is generated is compared with the car position Pg recorded in the abnormality data memory 33b, and the car sound Nc newly made abnormal is found. The driving situation Dc at the time of occurrence is compared with the driving situation Dg recorded in the abnormal data memory 33b. If both are equal, the process proceeds to step S20. That is, the car sound Nc that is newly regarded as an abnormal sound is not recorded in the abnormal data memory 33b. This is because the car sound Nc generated at the car position Pc is already recorded in the abnormal data memory 33b. On the other hand, in step S19, if at least one of the car position Pc, the car position Pg, the driving situation Dc, and the driving situation Dg does not match, the car sound Nc is a newly generated abnormality. Moving to step S17, the car sound Nc, the car position Pc, and the operation status Dc are recorded in the abnormal data memory 33b.

Next, steps S20 to S25 are processes for the car vibration Vc, and the same processes as for the car sound Nc are performed.
That is, in step S20, the level of the car vibration Vc from the car vibration detector 23 is determined. That is, when the car vibration Vc is equal to or greater than the predetermined threshold value β, it is considered abnormal. In step S21, the current car position Pc and the driving situation Dc, that is, the car speed and the driving direction are detected.

  In step S22, it is checked whether or not the car vibration Vg is recorded in the abnormal data memory 33b. If not recorded, the process proceeds to step S23, and the car vibration Vc, the car position Pc and the driving situation Dc at the time of the car vibration are newly recorded in the abnormality data memory 33b. If it is determined in step S22 that the car vibration Vg has already been recorded in the abnormal data memory 33b, the process proceeds to step S24, and the car position Pg and the operation status Dg related to the car vibration Vg are read from the abnormal data memory 33b. .

In step S25, the car position Pc at which the car vibration Vc newly generated as abnormal vibration is generated is compared with the car position Pg recorded in the abnormal data memory 33b, and the car vibration Vc newly determined as abnormal vibration is detected. The driving situation Dc at the time of occurrence is compared with the driving situation Dg recorded in the abnormal data memory 33b. If both are equal, the process ends. That is, the car vibration Vc is not recorded in the abnormal data memory 33b. This is because the car vibration Vc generated at the corresponding car position Pc has a high probability due to the same cause as that already recorded in the abnormal data memory 33b. On the other hand, in step S25, if at least one of the car position Pc, the car position Pg, the driving situation Dc, and the driving situation Dg does not match, the car vibration Vc is a newly generated abnormality. The process proceeds to step S23, where the car vibration Vc, the car position Pc, and the operation status Dc are recorded in the abnormal data memory 33b, and the process ends.
Note that the car positions Pc and Pg in steps S19 and S25 coincide with each other if they are within the abnormality occurrence zone Zn.

FIG. 5 is a flowchart for displaying an abnormality occurrence position. The display operation of the abnormality occurrence position is an operation performed only during the inspection operation.
If it is determined in step S31 that the inspection operation is being performed, the process proceeds to step S32. Here, it is checked whether abnormal data, that is, car sound Ng or car vibration Vg data is recorded in the abnormal data memory 33b. If it is recorded, the process proceeds to step S33, and the car position Pg where the car vibration Vg occurs is read from the abnormal data memory 33b. In step S34, the current car position Vc is detected. The car position Vc is obtained by processing the signal of the encoder 13 by the car position detection program 32b, and details thereof are omitted.

  Signal voltage at which the NO / OFF cycle To changes in accordance with the absolute value | (Pc−Pg) | of the difference value between the current position Pc of the car 16 and the car position Pg recorded in the abnormal data memory 33b in step S35. Vs is generated. As a specific method for generating the signal voltage Vs, here, it is performed by a computer program and output to an external device via the input / output circuit 34, and details thereof are omitted. In step S36, the car indicator 20, the UP button, the DOWN button, and the hall indicator 28 of the car top switch 21 are blinked by the signal voltage Vs.

  According to the first embodiment, during the elevator inspection operation, the car position Pg where the abnormality has occurred is determined by the signal voltage Vs in which the NO / OFF cycle To changes according to the difference value from the current car position Pc. Since the car indicator 20, the UP button of the car up switch 21, the DOWN button, and the hall indicator 28 are blinked, the car position Pg where the abnormality has occurred can be predicted. For this reason, the car position Pg where the abnormality has occurred can be easily obtained.

In addition, when the newly generated car sound Nc is generated at the same car position Pg as the car sound Ng already recorded in the abnormal data memory 33b by the process S16 to S19, and is generated in the same driving situation Dg. The new data is not recorded in the abnormal data memory 33b. For this reason, the abnormal sound due to the same cause is not repeatedly recorded every time the elevator is operated, and can be recorded in the abnormal data memory 33b limited to the necessary abnormal data.
The same applies to the newly generated car vibration Vc, and it can be recorded in the abnormal data memory 33b limited to the necessary abnormal data by the procedures S20 to S25.
Further, as shown in FIG. 1, since the abnormality occurrence zone Zn is provided for the car position Pc, even if the car position Pc changes minutely by operation, the abnormality data based on the same cause is duplicated and the abnormality data. It is not recorded in the memory 33b.
Furthermore, since it is limited to the abnormality that occurred during the raising / lowering operation and the door opening / closing, noise not related to the operation of the elevator is not recorded as abnormality data.

  In the first embodiment, the NO / OFF cycle To is changed in accordance with the difference value between the current car position Pc and the car position Pg where the abnormality has occurred. However, the present invention is not limited to this. The remaining distance from the current car position Pc to the car position Pg where the abnormality has occurred may be displayed as a numerical value. In this case, it is necessary to provide a numerical indicator separately.

1 is a block diagram showing an entire elevator abnormality detection apparatus according to Embodiment 1 of the present invention. The block diagram which shows the electric circuit of the abnormality detection apparatus of the elevator in Embodiment 1 of this invention. The data table of the abnormality data memory 33b of the abnormality detection apparatus of the elevator in Embodiment 1 of this invention. The flowchart which shows the abnormality detection operation | movement of the abnormality detection apparatus of the elevator in Embodiment 1 of this invention. The flowchart which displays the abnormality occurrence position of the abnormality detection apparatus of the elevator in Embodiment 1 of this invention. The block diagram which shows the whole the abnormality detection apparatus of the conventional elevator.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Operation control apparatus, 2 Car sound detection means, 3 Car vibration detection means, 4 Abnormality detection control apparatus, 5 Abnormal storage means, 6 Operation switching means, 7 Abnormal position display means, 11 Hoisting machine, 12 Hoisting motor, 13 Encoder, 14 main rope, 15 counterweight, 16 car, 17 car door, 18 car operation panel, 19 operation changeover switch, 20 car indicator, 21 car top switch, 22 car sound detector, 23 car vibration detector, 24 passengers, 25 landings, 26 landing doors 27 landing buttons, 28 landing indicators, 32e abnormality detection program, 32f abnormality occurrence position display program, 33b abnormality data memory.

Claims (2)

Under automatic driving for transporting passengers, the car sound detecting means for detecting the sound generated by the car or the car vibration detecting means for detecting the vibration generated by the car during raising and lowering of the car and opening and closing of the car door ;
When the detected car sound by the car sound detector or detected car oscillation by the car vibration detecting means exceeds a predetermined threshold value, the operation and position of the car to the car sound or the car vibration as an abnormal and abnormal data storage means for both storage and operating conditions including the direction and speed of the car,
Under the inspection operation for performing maintenance and inspection of the elevator , based on the storage contents of the abnormality data storage means, the abnormality detection control means for operating the elevator in the operation state where the abnormality has occurred and reproducing the state of the abnormality,
When the abnormality state is reproduced by the abnormality detection control means, the abnormal position display means for displaying the car position where the abnormality has occurred in a manner that changes according to the difference value from the current position ;
An elevator abnormality detection device comprising: 2. The elevator abnormality detection device according to claim 1, wherein the abnormality data storage means stores as an abnormality only for a predetermined car sound and car vibration generated during raising and lowering of the car and opening and closing of the car door. .

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