JPH11349249A - Remote trouble diagnosis system of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To indicate the more accurate advance indication of a trouble even if a judging value width is set to narrow by setting the judging value width so as to differ between an usual operation time and a diagnosis operation time and further setting the judging value width at the time of diagnosis operation to narrower than that of the usual operation time. SOLUTION: A diagnosis operation 17a is carried out in a no load state, and a start time 14Ua is shortened in the no load state. The start time 14Ua is lengthered at the time of usual operation. In order to diagnose by one judging value width, such wide range as the start time judging value width 20U has to be set, but in the start time judging value width 20U of such wide range, an accurate diagnosis can not be carried out at the time 17a of diagnosis operation. Therefore, at the time 17b of usual operation, the diagnosis is carried out in such wide range as the start time judging value width 20U while considering the car at the time changed from the no load state to a full state and at the time of diagnosis operation, the diagnosis is carried out by changing to such narrow range as the start time judging value width 19U.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator remote failure diagnosis system for performing predictive diagnosis of elevator running performance.

[0002]

2. Description of the Related Art As a conventional remote fault diagnosis system for an elevator, a measurement concerning the traveling performance of an elevator is performed.
There is known a configuration in which a signal indicating a failure is issued when an actual measurement value of a measurement item deviates from a predetermined determination value range. The judgment value range regarding the traveling performance is ascending operation,
Only one was set regardless of the operating conditions such as descent operation, normal operation, and diagnostic operation.

[0003]

Generally, in an elevator, when there is no passenger, the weight of the interlocking weight is heavier than that of the car when there is no load. The load applied to the elevator is greater during the descent operation in which the baskets raise the counterweights. Therefore, some elevators are characterized in that the time required to accelerate to the steady traveling is longer in the descending operation than in the ascending operation, and the steady traveling speed is lower. When a conventional elevator remote failure diagnosis system is applied to such an elevator, the diagnosis is performed using only one determination value range regardless of the traveling state of the elevator, that is, regardless of the load. A warning signal will be issued. In order to prevent this malfunction, the judgment value range may be set wider,
If the set value width is set wide, accurate diagnosis cannot be performed.

It is an object of the present invention to provide an elevator remote fault diagnosis system capable of more accurately predicting a fault even if the range of the judgment value range is set narrow.

[0005]

In order to achieve the above object, the present invention measures the running performance of an elevator, and outputs a signal indicating a failure when a measured value of a measurement item deviates from a predetermined judgment value range. In the elevator remote failure diagnosis system that issues an alarm, the judgment value width is set to be different between the normal operation and the diagnosis operation, and the judgment value width during the diagnosis operation is larger than the judgment value width during the normal operation. Is also set to be narrow.

As described above, in the elevator remote failure diagnosis system of the present invention, the judgment value range is set in accordance with the traveling state of the elevator as described above, and the judgment value range during the diagnostic operation is narrower than that during the normal operation. Since the setting is performed, a more detailed diagnosis of the traveling state can be performed using the narrower determination value range during the diagnostic operation, and a more accurate sign can be performed.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a schematic configuration diagram of an elevator employing the elevator remote failure diagnosis system according to the present invention. A hoisting machine 2 driven and operated by an elevator control device 3 is arranged in the upper machine room 1, and a rope wound around a sheave of the hoisting machine 2 is placed in a hoistway 4 formed below the machine room 1. It has a car 5 and a counterweight 6 connected to both ends thereof.

FIG. 1 is a block diagram of an elevator remote fault diagnosis system according to an embodiment of the present invention.

The remote elevator fault diagnosis system 7 comprises a data measuring unit 8, a calculating unit 9, a comparing and judging unit 10 and an alarming unit 11 which are configured in the elevator control device 3 shown in FIG.
, A monitoring center 13, and a communication line 12 such as a telephone line for connecting the alerting means 11 and the monitoring center 13. Here, the elevator control device 3 performs overall control regarding the operation of the elevator, and the data measurement unit 8
Reads the data of the elevator control device 3 and calculates
Calculates the data read out by the data measurement unit 8 to calculate data such as a start time, an acceleration time, and a deceleration time that affect running performance, which will be described later.
0 is for comparing the data calculated by the calculation unit 9 with a predetermined judgment value to determine whether the calculated value falls within the judgment value range. When the calculated data is out of the judgment value range, the signal is issued. It is supplied to the reporting means 11. The alerting means 11 which has received the information is sent to the monitoring center 13 via the communication line 12.
A warning signal is issued to.

FIG. 3 is a characteristic diagram showing a running state of the elevator. The vertical axis indicates speed, and the horizontal axis indicates time. When a start command is given at time t1, after start time 14 starts, start is started at time t2 as shown by a solid line, and acceleration time until time t3. It shows a traveling characteristic in which the vehicle accelerates at 15 to reach a predetermined traveling speed, then approaches the destination floor, starts deceleration at time t4, and stops at the destination floor after a deceleration time 16 until time t5. Here, data such as the start-up time 14, the acceleration time 15, and the deceleration time 16, which affect the traveling characteristics, are calculated by the calculation unit 9 shown in FIG.

FIG. 4 is a characteristic diagram for explaining the starting time 14 during the ascending operation. At the time of the diagnostic operation, 17a is performed in a no-load state where no passenger is in the car 5, but at no load, the interlocking weight 6 is heavier than the car 5 and the car 5 is pulled up by the counterweight 6 and rises. As a result, the start-up time 14Ua becomes relatively short. On the other hand, when the car 5 is full at the time of normal operation 17b, the car 5 becomes heavier than the counterweight 6, so that the start-up time 14Ub becomes longer.

In order to make a diagnosis with a single judgment value range for such different states as in the prior art, a wide range as shown in the start time judgment value width 20U must be set. With the start time determination value width of 20U in the range, accurate diagnosis cannot be performed at the time of the diagnostic operation 17a. Therefore, during the normal operation 17b, the diagnosis is performed in a wide range as shown in the start time determination value range 20U in consideration of the time from when the car 5 becomes full to the full load state when the car 5 is not loaded. Diagnosis is performed by changing the range to a narrow range as shown in the judgment value width 19U. Thus, during diagnostic operation 17
a and the normal operation time 17b are distinguished, and the start time judgment value widths 19U and 20 corresponding to the start time that changes depending on the operation state
Since U is changed, an accurate sign of a failure can be performed with the startup time determination value width 19U having a narrow range.

FIG. 5 is a characteristic diagram showing the starting time 14 during the descent operation. As described above, the diagnostic operation 17a is performed in a no-load state in which no passenger is in the car 5; therefore, at no load, the car weight 5 is heavier than the car 5 so that the car 5 is balanced. 6, and the starting time 14Da becomes longer. On the other hand, when the car 5 is full at the time of normal operation 17b, the car 5 is heavier than the counterweight 6, so that the startup time 14Db is shorter.

In order to make a diagnosis with a single judgment value width for the different states as in the prior art, a wide range as shown in the start time judgment value width 20D must be set. With the start time determination value width 20D in the range, accurate diagnosis cannot be performed at the time of the diagnostic operation 17a. Therefore, in the normal operation 17b, the diagnosis is performed in a wide range as shown in the start time determination value width 20D in consideration of the time when the car 5 becomes full from the no load state to the full state. The diagnosis is performed by changing the range to a narrow range as shown in the determination value width 19D. Thus, during diagnostic operation 1
7a and the normal operation time 17b are distinguished, and a start time determination value width 19D, 2 corresponding to a start time that changes according to the operation state.
Since 0D is changed, an accurate sign of a failure can be made with the startup time determination value width 19D whose range is set narrow.

FIG. 6 is a characteristic diagram showing the acceleration time 15 during the ascending operation. As described above, since the diagnostic operation 17a is performed in a non-pile load state, the non-priced load causes the interlocking weight 6 to be heavier than the car 5 and the car 5 to be pulled up by the counter weight 6 and rises. 15 Ua is shortened. On the other hand, at the time of normal operation 17b, when the car is full, the car 5 becomes heavier than the counterweight 6, so the acceleration time 15Ub becomes longer.

Therefore, at the time of normal operation 17b, diagnosis is made in a wide range as indicated by the acceleration time judgment value width 24U,
On the other hand, at the time of the diagnostic operation 17a, the diagnosis is performed by changing to a narrow range as shown in the acceleration time determination value width 23U.
As described above, the diagnosis operation time 17a and the normal operation time 17b are distinguished from each other, and the acceleration time judgment value widths 23U and 24U corresponding to the acceleration time that changes depending on the operation state are changed. Thus, an accurate sign of failure can be made.

FIG. 7 is a characteristic diagram showing the acceleration time 15 during the descent operation. At the time of the diagnostic operation, 17a is carried out in a non-pile load state.
Is heavier, the car 5 descends while pulling the counterweight 6, and the acceleration time 15Da becomes longer. On the other hand, if the car is full at the time of normal operation 17b, the car 5 is heavier than the counterweight 6, so the acceleration time 15Db is shorter.

Therefore, in the normal operation 17b, the acceleration time determination value width 24D is set to a wide range during the diagnostic operation 17a. Thus, the diagnostic operation 17a and the normal operation 17a
b, the acceleration time determination value widths 23D and 24D corresponding to the acceleration time that changes depending on the operation state are changed. Therefore, an accurate failure sign is obtained with the acceleration time determination value width 23D whose range is set to be narrow at the time of the diagnostic operation 17a. Can be performed.

FIG. 8 is a characteristic diagram showing the deceleration time 16 during the ascending operation. Since the diagnostic operation 17a is performed in the no-load state, the car 5 is engaged with the weight 6 when there is no load.
Is heavier, the car 5 is pulled up by the counterweight 6 and rises.
a becomes shorter. On the other hand, when the car 5 is full at the time of normal operation 17b, the car 5 becomes heavier than the counterweight 6 and the deceleration time 16Ub becomes longer. Therefore, during normal operation 17b, the deceleration time judgment value width 2
When the diagnosis operation is performed, the diagnosis is performed by changing the deceleration time determination value width to a narrow range 27U at the time of the diagnostic operation.

FIG. 9 is a characteristic diagram showing the deceleration time 16 during the descent operation. Since the diagnostic operation 17a is performed in a no-load state, the unbalanced weight 6 is heavier than the car 5 at the time of no load, so the car 5 is descending while pulling the balanced weight 6, and the deceleration time 16Da is long. Become. On the other hand, when the car is full at the time of normal operation 17b, the car 5 is heavier than the counterweight 6 and the deceleration time 16Db is shorter. Therefore, during normal operation 17b, a wider range of deceleration time determination value width 28D is set, and during diagnostic operation 17a, diagnosis is performed by changing to a narrower range of deceleration time determination value width 27D. In this manner, the diagnostic operation 17a and the normal operation 17b are distinguished from each other, and the deceleration time determination value widths 27D and 28D corresponding to the deceleration time that changes according to the operation state are changed. An accurate failure sign can be made with the deceleration time determination value width 27D thus set.

As can be seen from the above description, car 5
Start time 14 and acceleration time 1 which affect the running performance of the elevator according to the relationship between the state of the vehicle and the counterweight 6.
5 and the deceleration time 16 change according to the running state, and accordingly, the respective judgment value widths during the diagnostic operation 17a and during the normal operation 17b are changed by the comparison judgment unit 10 in FIG. Since the comparison is made, and the diagnostic operation 17a is set to be narrower than the normal operation 17b for each of the judgment value ranges and diagnosed, a more detailed diagnosis of the running state can be performed, and a more accurate prediction can be performed. it can.

[0022]

As described above, the remote fault diagnosis system for an elevator according to the present invention compares the start time, the acceleration time and the deceleration time, which affect the running performance, with different judgment value widths in the diagnostic operation and the normal operation. So that
In addition, the diagnostic operation is performed by comparing each judgment value width that is narrower than that in the normal operation, so that the diagnosis operation range is set to be narrower in the diagnostic operation than in the conventional case, so that a more accurate failure sign is obtained. Can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an elevator remote fault diagnosis system according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram illustrating a general elevator employing the elevator remote failure diagnosis system illustrated in FIG.

FIG. 3 is a characteristic diagram showing a traveling state of an elevator.

FIG. 4 is a characteristic diagram showing a startup time at the time of ascending operation by the elevator remote failure diagnosis system shown in FIG. 1;

FIG. 5 is a characteristic diagram showing a startup time at the time of a descending operation by the elevator remote failure diagnosis system shown in FIG. 1;

FIG. 6 is a characteristic diagram showing acceleration time at the time of ascending operation by the elevator remote failure diagnosis system shown in FIG. 1;

FIG. 7 is a characteristic diagram showing an acceleration time during a descent operation by the elevator remote failure diagnosis system shown in FIG. 1;

FIG. 8 is a characteristic diagram showing deceleration time during ascending operation by the elevator remote failure diagnosis system shown in FIG. 1;

9 is a characteristic diagram showing a deceleration time during a descending operation by the elevator remote failure diagnosis system shown in FIG.

[Explanation of symbols]

 14 Start time 15 Acceleration time 16 Deceleration time 17a During normal operation 17b During diagnostic operation 19U, 19D, 20U, 20D Start time judgment value width 23U, 23D, 24U, 24D Acceleration time judgment value width 27U, 27D, 28U, 28D Deceleration time judgment value width

Claims (2)

[Claims] 1. The running performance of an elevator is measured.
In an elevator remote failure diagnosis system that issues a signal indicating a failure when an actual measurement value of a measurement item deviates from a predetermined determination value width, the determination value width is set to be different between normal operation and diagnostic operation, In addition, the elevator remote failure diagnosis system is characterized in that the judgment value width during the diagnostic operation is set to be narrower than the judgment value width during the normal operation. 2. The method according to claim 1, wherein the determination value ranges in the normal operation and the diagnostic operation are set for a start time, an acceleration time, and a deceleration time in an ascending operation and a descending operation, respectively. A remote fault diagnosis system for an elevator.