JPH07228444A - Elevator monitoring device and control device - Google Patents

Abstract

PURPOSE:To reduce the effect to customers to the utmost by detecting the omen of a secular change or the like, and properly coping with it before such trouble state occurs that an elevator is stopped. CONSTITUTION:This elevator monitoring device is provided with a reference pattern memory means 1 receiving the speed signal 6 from an e.levator control device and storing the speed signal 6 as a reference pattern, a ordinary pattern memory means 2 storing the speed pattern 6 as an ordinary pattern, a comparing means 3 comparing the contents of the memory means 1, 2, a diagnostic means 4 making a diagnosis based on the comparison result, and a limiting means 5 giving the stop command 8 to the elevator control device based on the diagnosis result and sending a report signal 9 to a monitoring center or the like. The diagnostic means 4 diagnoses the state of normal, alarm, and abnormal levels. The limiting means 5 sends the report signal 9 to the monitoring center or the like at the time of the alarm state, sends the report signal to the monitoring center or the like at the time of the abnormal state, and commands a stop to the elevator control device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator monitoring device and control device, and more particularly to an elevator monitoring device and control device controlled by a microcomputer.

[0002]

2. Description of the Related Art As a conventional technique relating to an elevator failure detection device, for example, it is determined whether or not control is normally performed by using a deviation between a speed command value for a car and an actual speed of the car. A technique of detecting a failure is known. This conventional technology takes a small margin when the actual speed is an excessive speed with respect to the speed command value, and a large margin when the actual speed is an insufficient speed to diagnose whether the speed is normal or faulty. There is.

As a prior art relating to a failure diagnosis device for a motor control device, for example, Japanese Patent Laid-Open No. 1-2911682.
Techniques described in Japanese Patent Publications and the like are known. This conventional technique uses a control signal from a control device to obtain an estimated value of a disturbance torque in different modes, detects whether the control device is normal or abnormal from the deviation of the obtained estimated values of the disturbance torques, and adjusts them. To determine the cause.

Further, as a conventional technique relating to an elevator monitoring device, a technique described in Japanese Patent Laid-Open No. 5-108982 is known. In this conventional technology, the terminal device connected to the elevator control device monitors the operation of the microcomputer board provided on the elevator control panel, and when it detects a failure of the microcomputer board, it issues an alarm to the monitoring center. is there. Further, this prior art is to send together with information (confirmation number, customer name, model, standard, etc.) that can be used to shorten the failure recovery time when the abnormality is reported.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In both cases, it is only judged whether it is a failure (or an abnormality) and it is normal. If a failure does not occur, it cannot be considered as an abnormality, and even if a sign of an abnormality appears, it is not a failure and is normal. Therefore, it is determined that the abnormality is the first to occur when this symptom develops into a failure that the elevator must stop.

That is, none of the above-mentioned prior arts has a problem in that it is impossible to accurately detect a sign of abnormality and maintenance cannot be performed unless the sign of abnormality reaches a failure. is doing.

The object of the present invention is to solve the above-mentioned problems of the prior art and to quickly detect signs such as secular change before a failure (abnormal) state in which the elevator is forced to stop. It is possible to take an appropriate response (contact the maintenance company, prevent the deterioration of the status due to the change of the command value during operation, etc.) and minimize the influence on the customer due to the failure and stop of the elevator. It is an object to provide a monitoring device and an elevator control device that uses a monitoring result of the monitoring device.

[0008]

According to the present invention, the above-mentioned object is at least one of a deviation between a command value and a measured value and a measured value at the time of operation after the elevator has been adjusted at the time of installation of the elevator or periodic inspection. , A standard pattern storage means for storing from start to stop, and a normal pattern storage means for storing one of the deviation between the command value and the measured value during normal operation and the measured value from start to stop. Comparing means for comparing the reference pattern present with the normal pattern stored during normal operation, and at least three elevator operating states depending on the comparison result by the comparing means.
This is achieved by providing a diagnostic means for diagnosing in stages (for example, three stages of normal, warning, and stop) and a limiting means for limiting the operation of the elevator according to the diagnostic result.

In the above description, the diagnosing means is for diagnosing the operating state of the elevator, for example, in three stages of normal, warning, and stopping, and the limiting means is, for example,
During normal operation, monitoring continues, during warning, various data used for diagnosis are stored, and warning is issued to the elevator monitoring center to continue elevator operation and monitoring, and when stopped, the elevator is stopped and elevator monitoring is performed. The center is notified of the stop, the elevator is running,
It is to stop monitoring.

Further, the above object is to change the operation mode of the elevator (change the command value during operation, based on the diagnosis result (monitoring result) obtained by the diagnosis means.
For example, when the diagnosis result is a warning, a changing means for lowering the speed than usual) and an output means for outputting a change signal to the speed control device of the elevator are provided to control the operation of the elevator. Achieved by

[0011]

Since the present invention is constructed as described above,
For example, when using the measured value, a reference pattern stored as a reference the measured value pattern of the initial operation after adjustment,
After that, by comparing the normal pattern, which is the pattern measured during the normal operation (or calculated using the measured value), with the comparison means, the deviation of the normal pattern from the reference pattern can be accurately captured. Further, according to the present invention, the diagnostic means performs, for example, three-stage diagnosis of normality, warning, and stop according to the magnitude of the deviation, and using the result of the device, the limiting means continues monitoring during normality and diagnoses during warning. It stores various data used for monitoring and alerts the elevator monitoring center, maintenance company, etc. of the occurrence of warnings, continues elevator operation and monitoring, stops the elevator when stopped, and also monitors the elevator monitoring center and maintenance company. It is possible to stop the operation and monitoring of the elevator by reporting the occurrence of the stop to etc.

That is, according to the present invention, a small change due to aging or the like gradually appearing in the elevator control system can be detected at the warning stage and a warning can be issued to a monitoring center or a maintenance company. Accordingly, the monitoring center, the maintenance company, or the like can deal with the complaint before the customer complains without stopping the elevator during the normal operation. In addition, the present invention catches a large change due to sudden failure, deterioration, etc. at the stop stage, and reports the stop occurrence to the monitoring center or maintenance company after stopping the elevator, so before a serious accident occurs. You can safely stop the elevator and take action.

In the present invention, the measured value during operation after elevator adjustment is stored as the reference pattern, but it is also possible to store the ideal value obtained by calculation as the reference pattern. In this case, the storage switch of the reference pattern storage means can be eliminated.

Further, according to the present invention, the elevator may be monitored by using at least one of a plurality of various measured values and a command value and a deviation between the measured values. In this case, each measured value and command may be monitored. By making various comparisons using at least one of the deviation between the value and the measured value, it is possible to diagnose even the cause of the warning or the stop occurrence.

According to the present invention, the diagnostic result for monitoring can be further divided into four stages of normal, caution, warning and abnormality, or can be divided into five stages of normal, caution, warning, abnormality and failure. This makes it possible to perform a more detailed diagnosis. In this case, the meaning of the caution step is that the monitored value is within the normal range but is approaching the warning step. Also, the abnormal stage is
Even if the monitored value shows an abnormal value, it is a stage where the failure has not yet been reached, and the failure stage means a stage accompanied by a failure such as hardware or software.

According to the present invention, the changing means changes the speed command value of the elevator based on the diagnosis result (monitoring result) obtained by the diagnosing means (for example, when the diagnosing result is a warning, the speed is changed). Since the changed command value can be output to the elevator speed control device by the output means (for example, lower than usual), it is possible to prevent the diagnosis result from further deteriorating.

In the present invention, the speed command is given as an example of the command value, but acceleration, torque, or a combination thereof may be used in addition to speed.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings when a velocity signal is used as a measurement value.

FIG. 1 is a block diagram showing the construction of an elevator monitoring device according to an embodiment of the present invention, FIG. 2 is a diagram for explaining an example of a diagnostic pattern for explaining a diagnostic method, and FIG. 3 is a reference pattern and a normal pattern. 4 is a diagram illustrating a comparative example of FIG.
Is a flowchart for explaining the processing operation of the reference pattern storage means, FIG. 5 is a flowchart for explaining the processing operation of the normal pattern storage means, FIG. 6 is a flowchart for explaining the processing operation of the comparison means, and FIG. 7 is a processing operation of the diagnostic means. FIG. 8 is a flowchart for explaining the processing operation of the limiting means. In FIG. 1, 1 is a reference pattern storage means, 2 is a normal pattern storage means, 3 is a comparison means, 4 is a diagnostic means, 5 is a limiting means, 6 is a speed signal, and 7 is a speed signal.
Is a diagnosis result signal, 8 is an elevator stop command signal, and 9 is a warning signal.

As shown in FIG. 1, an elevator monitoring device according to an embodiment of the present invention receives a speed signal 6 from an elevator control device (not shown) and stores the speed signal 6 as a reference pattern in a reference pattern storage means 1. A normal pattern storage means 2 for storing the speed pattern 6 as a normal pattern, a comparison means 3 for comparing the contents of these storage means 1, 2, a diagnosis means 4 for making a diagnosis based on the comparison result, and a diagnosis result based on the diagnosis result. And a limiting means 5 for issuing a stop command 8 to the elevator control device and issuing a warning signal 9 to a monitoring center or the like.

Next, the general operation of the embodiment of the present invention shown in FIG. 1 will be described with reference to FIGS.

Obtained during the elevator operation after the installation of the elevator is completed or after the regular inspection and repair, for example,
The speed signal 6 as shown in FIG. 3A is stored in the reference pattern storage means 1 as a reference pattern including time information. Further, a speed signal 6 as shown in, for example, FIG. 3B, which is obtained when the customer operates the elevator, is stored in the normal pattern storage means 2.

The storage of these patterns is performed by providing a storage switch (not shown) for turning on / off in synchronization with a brake opening / closing signal or an elevator operation signal, and synchronizing the data of each storage pattern.
If the storage switch is not provided, it is necessary to perform processing such as finding the rise of speed from each storage pattern and synchronize the stored data at the time of comparison.

Further, according to one embodiment of the present invention, the departure floor and the stop floor (destination floor or arrival floor) are stored together with the storage of the reference pattern, and the departure floor and the stop floor (destination floor) during normal operation are stored. Alternatively, when the arrival floor) matches those floors of the reference pattern, the storage switch is turned on to store the normal pattern.

The comparison means 3 compares the reference pattern previously stored in the storage means 1 as described above with the normal pattern stored in the storage means 2 during the normal operation. Although various methods can be considered as the comparison method, here, as a result of the comparison, the pattern of the speed deviation ΔV is calculated by the equation (1), and FIG.
It shall be obtained as shown in (c).

Velocity deviation ΔV (t) = Vb (t) −Vn (t) (1) where Vb: reference pattern data Vn: normal pattern data t: time of pattern stored in synchronization is there.

The diagnosing means 4 diagnoses whether or not there is an abnormality based on the pattern of the speed deviation ΔV obtained by the comparing means 3 by the equation (1). In the embodiment of the present invention, the diagnosis is performed in three stages, but it is also possible to perform more stages, and in that case, more detailed diagnosis can be performed.

The diagnosing means 4 stores in advance a diagnostic pattern corresponding to the magnitude of the velocity deviation and the area of the pattern as shown in FIG. 2 (a limit value for dividing each area may be stored instead of the pattern). Have In this diagnostic pattern, the limit value is set to diagnose normal, warning, and stop as the speed deviation increases, and the limit value in one embodiment of the present invention is set to be constant during acceleration / deceleration. The value is different from that at high speed.

The limit value can be set differently during acceleration, deceleration, and constant speed, or can be set to be the same, and if set differently, more detailed and , If set to the same, simplified diagnosis can be performed.

The diagnosing means 4 diagnoses the pattern of the speed deviation ΔV shown in FIG. 3 (c) by using the diagnosis pattern shown in FIG. 2 (comparing in which area the speed deviation is).
The diagnosis result 7 is output, and when the diagnosis result is a warning or a stop, the normal pattern and the pattern of the speed deviation ΔV are stored.

The limiting means 5 judges the diagnostic result 7 from the diagnosing means 4, and if the result of the judgment is normal, it causes the monitoring device to continue monitoring, and in the case of a warning, the monitoring center or maintenance company or the like. A warning signal is issued by a warning signal 9, and elevator operation and monitoring are continued. In the case of a stop, a stop command 8 is output to the elevator control device, and then the stop center is notified to the monitoring center or maintenance company. Signal 9 is issued to stop elevator operation and monitoring.

Further, when the diagnosis result is normal and a warning, the limiting means 5 continues to execute the above-mentioned monitoring.

Next, details of the operation of each means constituting the above-described embodiment of the present invention will be described with reference to the processing flows shown in FIGS.

First, the operation of the reference pattern storage means 1 will be described with reference to the processing flow shown in FIG. This processing flow is started at the time of operation after installation and adjustment of the elevator or after regular inspection.

(1) First, it is determined whether or not the reference pattern has been stored, and if it has been stored, the process ends.
If not stored, the operation for storing the reference pattern is started, and the departure floor and stop floor (or destination floor) at the time of the operation are stored (steps 401, 402).

(2) Next, it is checked whether or not the brake has been released due to the departure from the elevator. When the brake is released, the switch for storing the reference pattern is turned on. If the brake is not released, the storage switch is released. O
The FF is held as it is (steps 403-405).

(3) Further, it is checked whether or not the storage switch is turned on, and if not turned on, the processing is terminated (step 406).

(4) When it is confirmed in step 406 that the storage switch is turned on, speed data is input from the elevator control device and this data is stored in the table in the reference pattern storage means 1. (Step 4
07, 408).

(5) It is checked whether the elevator has stopped. If not stopped, the process from step 407 is continued and the process of storing the speed data in the table is continued until the elevator is stopped. When the elevator is stopped, the storage process of the series of reference patterns ends (step 409).

Next, the operation of the normal pattern storage means 2 will be described with reference to the processing flow shown in FIG. This processing flow is activated during normal elevator operation.

(1) First, at the time of normal operation of the elevator, it is determined whether the departure floor and the stop floor (or the destination floor) match those stored in the reference pattern. The process ends (step 501).

(2) If it is determined in step 501 that the departure floor and the stop floor (or the destination floor) match those stored in the reference pattern, it is checked whether the brake has been released due to elevator departure. Then, when the brake is released, turn on the switch for normal pattern storage,
If the brake is not released, turn off the memory switch.
It is held as F (steps 502 to 504).

(3) Further, it is checked whether or not the storage switch is ON, and if it is not ON, the process is terminated (step 505).

(4) When it is confirmed in step 406 that the storage switch is ON, speed data is input from the elevator control device and this data is stored in the table in the normal pattern storage means 2. (Step 5
06, 507).

(5) It is checked whether the elevator has stopped. If not stopped, the process from step 407 is continued and the process of storing the speed data in the table is continued until the elevator is stopped. When the elevator is stopped, the series of normal pattern storage processing is terminated (step 508).

Next, the operation of the comparison means 3 will be described with reference to the processing flow shown in FIG. This processing flow may be started at a predetermined time interval during normal elevator operation.

(1) First, it is determined whether or not the reference pattern and the normal pattern have been stored, and if both have not been stored, the process ends (steps 601 and 602).

(2) In the determinations in steps 601, 602,
If both the reference pattern and the normal pattern have already been stored, the base time t to be compared is initialized (step 603).

(3) Speed deviation ΔV (t) at time t
Is calculated by using the above-mentioned equation (1), the result is stored in the speed deviation storage table, and the time t is updated by +1 or the like (steps 604 to 606).

(4) It is checked whether the updated time t is the time t _end until the elevator is stopped, the time t is updated for the data until the elevator is stopped, and the processing from step 604 is repeatedly executed. The sequentially obtained speed deviation ΔV (t) is stored as a pattern in the speed deviation storage table (step 607).

Next, the operation of the diagnostic means 3 will be described with reference to the processing flow shown in FIG. This processing flow may be activated at the end of the processing by the comparison means 3 described above.

(1) First, the diagnosis in the acceleration region, that is, the time region t0≤t≤ta, is performed by determining the normal value limit value La1 and the warning value limit value La2 in the acceleration region and the absolute value of the speed deviation ΔV. This is done by comparing. That is, when 0 ≦ | ΔV (t) | <La1, normal is detected, when La1 ≦ | ΔV (t) | <La2, warning, and when La2 ≦ | ΔV (t) |, abnormal is diagnosed (step 701). ).

(2) As a result of the diagnosis in step 701, it is judged whether or not there is a warning or stop. If there is at least one of these, the warning or stop is stored in the table of the diagnosis result of the acceleration region (step 70).
2, 703).

(3) After the end of step 703, or when it is determined in step 702 that there is no warning or stop, the diagnosis in the constant speed region, that is, ta ≦ t ≦ td, is performed with the normal value in the constant speed region. This is performed by comparing the limit value Lc1 and the warning value limit value Lc2 with the absolute value of the speed deviation ΔV. That is, when 0 ≦ | ΔV (t) | <Lc1, normal, when Lc1 ≦ | ΔV (t) | <Lc2, warning, and when Lc2 ≦ | ΔV (t) |, abnormal is diagnosed (step 704). ).

(4) As a result of the diagnosis in step 704, it is judged whether or not there is a warning or stop, and if there is at least one of these, the warning or stop is stored in the table of the diagnosis result of the acceleration region (step 70).
5, 706).

(5) After the end of step 706, or when it is determined in step 705 that there is no warning or stop, the diagnosis in the deceleration region, that is, td ≦ t ≦ t _end, is performed by limiting the normal value of the deceleration region. This is performed by comparing the value La1 and the warning value limit value La2 with the absolute value of the speed deviation ΔV. That is, when 0 ≦ | ΔV (t) | <La1, it is normal, when La1 ≦ | ΔV (t) | <La2, it is a warning, and when La2 ≦ | ΔV (t) |, it is abnormal (step 707). ).

(6) As a result of the diagnosis in step 707, it is judged whether or not there is a warning or stop. If there is at least one of these, the warning or stop is stored in the table of the diagnosis result of the deceleration area (step 70).
8, 709).

(7) As a result of the above-mentioned diagnosis, it is judged whether or not all the diagnosis results in all areas are normal, and if all areas are normal, a series of diagnosis processing is terminated (step 710).

(8) If there is at least one stop or warning in all areas in the judgment of step 710, that is, if both warnings and stops, or only stop, stop as a comprehensive diagnosis result. If there is no stop and there is a warning, the warning is stored as a comprehensive diagnosis result in the comprehensive diagnosis result storage table. If all the areas are normal, nothing is stored in the storage table of the comprehensive diagnosis result, but it means that nothing is stored (step 7).
11).

Next, the operation of the limiting means 5 will be described with reference to the processing flow shown in FIG. This processing flow is started immediately after the processing by the diagnostic means 4 is completed.

(1) It is judged whether the comprehensive diagnosis result by the diagnostic means 4 is normal, a warning, or a stop. If the result is normal, the process is terminated (step 801).

(2) When the judgment in step 801 is a warning, the warning is issued to the monitoring center or the maintenance company by the warning signal 8 and the contents of the normal pattern storage table and the speed deviation storage table are warned. The data is stored in the storage table (steps 804 and 805).

(3) If the determination in step 801 is stop, the elevator stop command 9 is output to the elevator control device, and the occurrence of stop is notified to the monitoring center or maintenance company by the alarm signal 8 and the like. The contents of the normal pattern storage table, the speed deviation storage table, etc. are stored in the stop storage table (steps 802, 803,
805).

In the above-described embodiment of the present invention, when the elevator operation system is monitored periodically or sequentially to monitor the elevator operating state, there is a small change such as secular change in the elevator control system. Immediately, a warning is issued to the monitoring center or maintenance company, and when a large change due to failure or deterioration occurs, an elevator stop command is output to the elevator control device, and the stop is monitored by the monitoring center or maintenance company. Can be notified to.

According to the above-described embodiment of the present invention, this enables the monitoring center or maintenance company to take action before the customer makes a complaint without stopping the elevator during normal operation. can do. Further, according to one embodiment of the present invention, a large change due to a sudden failure, deterioration or the like is detected in the stop stage, and the stop is first notified to the monitoring center or the maintenance company after the elevator is stopped. , It is possible to stop the elevator safely before the serious accident and take action.

In the above-described embodiment of the present invention, the measurement value during operation after elevator adjustment is stored as a reference pattern, and the diagnosis is performed based on the deviation from the measurement value during actual operation. Is the deviation between the command value and the measured value during actual operation, the ideal value calculated and used as the reference pattern, and the deviation from the measured value during actual operation, or a combination of both, is used for diagnosis. You can also do
The same effect can be obtained.

As the measured value, in addition to the speed described above as an example, acceleration, load (load), current, voltage, frequency, vibration, etc. can be used, and as the calculated value, the torque value ( The present invention can obtain the intended effect even if any of these is used. Further, when using the current, voltage, torque value, etc., the difference in the number of passengers, ascending / descending, etc. is taken in by the load sensor, and the limit values L1, L2 (La1, La2, Lc1 according to the regions are explained. , Lc2) is corrected to an appropriate value using, for example, the following equations (2) to (5), a more detailed diagnosis can be performed.

Correction value ε ₁ = a (W1−W1 ′) + b of limit value L1 (2) Correction value ε ₂ = c (W1−W1 ′) + d of limit value L2 (3) After correction limit value _{L1 '= ε 1 + L1 ......} (4) of the corrected limit value _{L2' = ε 2 + L2 ......} (5) where, W1 is the current limit load weight W1 'is the time of setting the previous limit value Load amount when set a, b, c, d are constants.

Although the above-described one embodiment of the present invention has been described as performing the monitoring using the pattern from the time the elevator is started to the time it is stopped, at least one of the measured value and the command value as the reference value in real time is normally used. It is also possible to successively monitor the deviation from the measured value during operation. In this case,
It is possible to catch the occurrence of a warning or stop (abnormality) in a more timely manner.

Further, although the above-described embodiment of the present invention has been described as the necessary means such as issuing an alarm when the warning or the stop occurs even once even if the monitoring is performed, the present invention can be performed a plurality of times. (Or a predetermined number of times) It is also possible for the limiting means 5 to take necessary measures such as issuing an alarm when these occur, and in this case, the influence of noise or the like can be eliminated and the diagnosis The accuracy can be further improved.

Although the above-described embodiment of the present invention has been described as being applied to the monitoring of the operating state of the elevator of the present invention, the present invention may also be applied to the monitoring of the opening and closing of the door of the elevator. it can.

FIG. 9 is a block diagram showing the configuration of another embodiment of the present invention, FIG. 10 is a flow chart for explaining the processing operation of the changing means, and FIG. 11 is a flow chart for explaining the processing operation of the output means. In FIG. 9, 10 is a monitoring result (diagnosis result) of the monitoring device, 11 is changing means, 12 is output means, and 13 is a command value table.

In another embodiment of the present invention, the monitoring result (diagnosis result) by the monitoring device according to the embodiment of the present invention described above.
Is used to change the speed command value, and the elevator control device executes the speed control based on the changed speed command value. In this embodiment, the speed command value is changed according to the monitoring result. However, the speed command value may be changed to change the acceleration, the torque command value, a combination thereof, or the like.

In another embodiment of the present invention shown in FIG. 9, the speed command value is changed between the elevator monitoring device according to the embodiment of the present invention shown in FIG. 1 and an elevator control device (not shown) according to the monitoring result. It comprises a changing means 11 for changing, an output means 12 for giving a change result to the elevator control device, and a command value table 13 for storing the changed command value. Then, the changing unit 11 determines the diagnosis result (monitoring result) obtained by the diagnosis unit of the elevator monitoring device.
Based on the above, the speed command value of the elevator is changed (the operation mode is changed, for example, when the diagnosis result is a warning, the speed is lowered than usual), and the speed command is changed to the elevator control device by the output means 12. It outputs a value.

Next, details of the operation of each means constituting the other embodiment of the present invention described above will be explained with reference to the processing flows shown in FIGS.

First, the operation of the changing means 11 will be described with reference to the processing flow shown in FIG.

(1) The monitoring result (or diagnosis result) of the elevator monitoring device is input, and it is determined whether the monitoring result is normal, a warning, or a stop. If the monitoring result is normal, the process ends without doing anything. (Steps 101 and 102).

(2) If the monitoring result of the monitoring device is stopped in the judgment of step 102, a stop command is set in the command value table 13 and the output means 12 is activated (step 10).
3, 105).

(3) If the result of monitoring by the monitoring device is a warning in the judgment at step 102, a speed command value lower than the rated speed command value, for example, 1/2 of the rated speed is set in the command value table 13. Then, the output means 12 is activated (steps 104 and 105).

According to the processing flow shown in FIG. 11, the output means 12 inputs the command value set in the command value table 13 by the changing means 11 and outputs this command value to the elevator control device as a command value.

According to the other embodiment of the present invention described above, the monitoring result of the monitoring device can be reflected in the speed control of the elevator control device, and when the warning condition occurs, the command speed of the elevator is decreased. Since it is possible to perform a different operation, it is possible to prevent deterioration from a warning state to a stopped state.

Further, in the other embodiment of the present invention described above, the command value output to the elevator control device is not used immediately according to the monitoring result, but after the elevator is stopped and the next time it is started. Therefore, it is possible to avoid troubles such as speed fluctuations due to sudden changes in the speed command value.

Further, the processing of the changing means 11 and the output means 12 in the other embodiment of the present invention described above is included in the limiting means 5 of the monitoring device according to the embodiment of the present invention described above. It is also possible to

Further, another embodiment of the present invention described above is
Although it has been described that the changing unit 11 halves the speed command value, the changing amount can be set arbitrarily. Also, when using command values such as acceleration and torque as command values, it is possible to operate with command values lower than the rated value in the warning state. The same effect as described above can be obtained.

[0085]

As described above, according to the present invention, a small sign such as secular change can be quickly caught before a failure (or abnormal) state in which the elevator is forced to stop, and the situation is improved. Depending on the appropriate response (eg,
It is possible to contact a monitoring center or a maintenance company, change the operation mode to prevent the elevator from deteriorating, and improve the safety of the elevator.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an elevator monitoring device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an example of a diagnostic pattern for explaining a diagnostic method.

FIG. 3 is a diagram illustrating a comparative example of a reference pattern and a normal pattern.

FIG. 4 is a flowchart illustrating a processing operation of a reference pattern storage unit.

FIG. 5 is a flowchart illustrating a processing operation of a normal pattern storage unit.

FIG. 6 is a flowchart illustrating a processing operation of a comparison unit.

FIG. 7 is a flowchart illustrating a processing operation of a diagnostic means.

FIG. 8 is a flowchart illustrating a processing operation of a limiting unit.

FIG. 9 is a block diagram showing the configuration of another embodiment of the present invention.

FIG. 10 is a flowchart illustrating a processing operation of a changing unit.

FIG. 11 is a flowchart illustrating a processing operation of output means.

[Explanation of symbols]

 1 Reference Pattern Storage Means 2 Normal Pattern Storage Means 3 Comparison Means 4 Diagnostic Means 5 Limiting Means 11 Changing Means 12 Output Means 13 Command Value Tables

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Teruka Atsawa 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Inside Hitachi Building System Service Co., Ltd.

Claims (16)

[Claims] 1. An elevator monitoring device for monitoring the operating state of an elevator, wherein a deviation between a command value and a measured value from the start to the stop of the elevator is used as a reference,
Reference pattern storage means for storing at least one of the measured values, normal pattern storage means for storing at least one of the deviation between the command value and the measured value from the start to stop of the elevator during normal operation, and the measured value. Comparison means for comparing the reference pattern with the normal pattern, diagnostic means for diagnosing the operating state of the elevator in at least three stages according to the comparison result by the comparison means, and elevator operation limited according to the diagnostic result by the diagnostic means An elevator monitoring device, comprising: 2. An elevator monitoring device for monitoring the operating state of an elevator, wherein a deviation between a command value and a measured value from the start to the stop of the elevator as a reference,
A reference pattern storage unit that stores at least one of the measured values, a deviation between the current command value and the measured value during normal operation, a normal value storage unit that stores at least one of the measured values, and a current reference pattern stored. The comparing means for comparing the stored value at the position corresponding to the current value with the current normal value, the diagnosing means for diagnosing the operating state of the elevator in at least three stages according to the comparison result by the comparing means, An elevator monitoring apparatus, comprising: a limiting unit that limits the operation of the elevator. 3. The reference pattern is stored at the time of installation of the elevator or at the time of operation after completion of elevator adjustment during a periodic inspection.
Elevator monitoring device described. 4. The elevator monitoring device according to claim 1, wherein the reference pattern is obtained in advance by calculation or the like. 5. The elevator monitoring device according to claim 1, further comprising a storage switch that is turned on when the reference pattern is stored and turned off after the storage is completed. 6. The reference pattern storage means stores a departure floor and a stop floor (destination floor, arrival floor) corresponding to the stored reference pattern together. The elevator monitoring device described in 1. 7. The storage device according to claim 1, further comprising a storage switch that is turned on when the normal pattern is stored and turned off after the storage is completed.
Elevator monitoring device described. 8. The switch for storing the normal pattern is turned on when a normal operation is performed on the departure floor and the stop floor that are the same as the departure floor and the stop floor stored in the reference pattern storage means. The elevator monitoring device according to claim 7, wherein the monitoring device is an elevator. 9. The diagnosing means diagnoses the operating state of an elevator by providing at least one stage between a normal stage and an abnormal or fault stage. Elevator monitoring equipment. 10. The elevator monitoring device according to claim 1, wherein the diagnosing means diagnoses the operating state of the elevator in at least three stages: normal, warning, and stopped. 11. The limiting means continues monitoring when the diagnosis result is normal, stores various data used for diagnosis at the time of warning, and also issues a warning to a monitoring center of the elevator to operate the elevator. 11. The elevator monitoring apparatus according to claim 10, wherein the monitoring is continued, the elevator is stopped when stopped, and the elevator monitoring center is notified to stop the elevator operation and monitoring. 12. The command value is at least one of a speed command value, a rated speed command value, an acceleration / deceleration command value, and a torque command value.
The elevator monitoring apparatus according to claim 1, wherein the measured value is a measured value corresponding to these commands. 13. An elevator control device, and a changing means for changing a command value relating to elevator speed control based on a monitoring result by the elevator monitoring device according to claim 1. An elevator control device comprising: an output unit configured to output a change result by the unit to an elevator speed control unit. 14. The elevator control according to claim 13, wherein when the monitoring result of the elevator monitoring device is a warning, the command value related to the speed control of the elevator is lowered to continue the operation of the elevator. apparatus. 15. When the monitoring result by the elevator monitoring device is a warning, the command value related to the speed control of the elevator is decreased from the next start after the elevator is stopped to continue the operation of the elevator. The elevator control device according to claim 13. 16. The command value relating to the speed control of the elevator is at least one of a speed command value, a rated speed command value, an acceleration / deceleration command value, and a torque command value. Or the elevator control device described in 15.