JP2006318414A - Slave station device of remote monitor control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slave station device of a remote monitor control system for such as service water management capable of automatically compensating missing measured data. <P>SOLUTION: The slave station device comprises a facility operating means for executing operation of a facility in response to an instruction from a master station, and a reporting means for reporting a characteristic amount indicating a present condition of the facility to the master station. The reporting means is provided with a measuring means for measuring the characteristic amount indicating the present condition of the facility, a learning means for extracting relation between a passing time from an output start of a control signal output when the facility operating means operates the facility and the characteristic amount obtained by measurement by the measuring means, an estimating means for obtaining an estimate value of the characteristic amount indicating the present situation of the facility on the basis of the passing time from the output start of the control signal by utilizing relation extracted by the learning means, and a compensating means for reporting the estimated value of the characteristic amount obtained by the estimating means instead of a measurement result when the measurement result by the measuring means can not be obtained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a slave station apparatus that directly relates to an operation target such as a gate or a valve in a remote monitoring control system that remotely controls the opening degree of a gate or a valve via a transmission line, such as a water management system. .

FIG. 4 shows a configuration example of a conventional water management system.
In FIG. 4, a plurality of collection-system slave station devices 401 are arranged in a remote place where the operation target equipment 400 is located, and a gate 402 and a gate drive mechanism are provided by a sensor 403 provided in each collection-system slave station apparatus 401. Real-time conditions (such as gate and valve openings) regarding these facilities 400 including 409 are measured. The output of the sensor 403 shown in FIG. 4 is converted into appropriate digital data by the sensor management unit 406 provided in the collection-system slave station device 401, and is sent to the collection-system master station device 411 via the communication processing unit 405. The

  Further, the measurement results obtained in these collection-system slave station devices 401 are periodically collected (for example, every hour) by the collection-system master station apparatus 411 provided in the management center 410 shown in FIG. The data is subjected to a data aggregation process such as a flow rate calculation process by the duplexed data processing device 412. Further, as described above, the measurement results periodically collected by the collection-system master station device 411 and the aggregation results by the data processing device 412 are used for display processing and form output processing by the display output terminal 413.

  Further, based on an instruction input by the operator via the operation terminal 414 provided in the management center 410, an appropriate operation target and operation amount are determined by the data processing device 412, and an operation instruction including such information is collected. The data is transmitted to the collection slave station device 401 corresponding to the corresponding operation target via the system master station device 411. Then, the collection-type slave station device 401 that has received this instruction executes processing for operation control related to the gate and valve.

At this time, the drive power necessary for the gate drive mechanism 409 for operating the gate 402 based on the operation instruction received via the communication processing unit 405 by the equipment control unit 404 provided in the collection-system slave station device 401 And processing such as supply of control signals and output of control signals.
In the facility control unit 404, the operation limit timer 407 is set with an operation limit time determined from the time required to fully open (fully close) the corresponding gate or valve. The control signal output unit 408 Starts the output of an appropriate control signal in response to the input of the operation instruction described above, and stops the output of the control signal described above in response to the notification from the operation restriction timer 407, thereby causing excessive operation of the facility. It plays a role to prevent.

In such a water management system, there are cases where gates and valves installed in different places are controlled in cooperation for the stable supply of water (see Patent Document 1).
In such a case, the collection-system master station device 411 sends an operation instruction indicating the target opening degree to each related collection-system slave station device 401, and then the operation target reported from these collection-system slave station devices 401 The measurement result regarding the opening of the gate or valve is monitored, and cooperative control of the gate and valve under the management of the collection system slave station device 401 is managed.

  In such cooperative control, the measurement result indicating the opening degree of the gate or valve corresponding to each related collection-system slave station device 401 is very important information for normally executing the cooperative control. For this reason, in the conventional control method, when the measurement result indicating the opening degree of the gate or the valve is missing from these collection-system slave station devices 401 (hereinafter referred to as “missing measurement”), the control itself is immediately performed. It was finished.

  If the opening degree data is missing in this way, the flow rate data calculated by the data processing device 412 based on the opening degree data is also missing, which affects work such as form output. Conventionally, data that has been manually measured by means of visual observation or the like is manually compensated for by the operator via the operation terminal 414 to compensate for missing data, thereby avoiding an effect on the form output process.

In Patent Document 2, for training an operator who can smoothly cope with an unexpected situation by incorporating manual compensation of data when a failure such as missing measurement occurs into the training procedure. A simulation system is described.
JP-A-6-324743 JP 2002-32008 (paragraph (0041) to paragraph (0046))

  In the conventional water management system described above, for example, as shown in FIG. 5, when controlling the opening of the valve 2 that controls the flow rate from the upstream gate 1 and the downstream water tank, the upstream gate If the opening data for the gate 1 is missing during the closing of the operation, the operation on the gate 1 is immediately stopped. Then, the gate 1 remains open, and the water tank may overflow depending on the opening degree of the valve 2. Similarly, if the control is stopped in response to a missing measurement of the opening degree data while the gate 1 is being opened, the gate 1 remains closed and water does not flow downstream.

As described above, the conventional water management system that abnormally terminates the automatic control in response to the missing measurement of the opening degree data may not be able to realize the stable supply of water, which is the purpose of the water management system. It was.
Moreover, in the conventional water management system, as for the missing data, there is no choice but to manually input the data obtained manually. Therefore, in order to complete the output of the form, a maintenance worker is dispatched to the installation location of the collection system slave unit 401 where the missing measurement has occurred, and in addition to work such as replacement of the sensor 403, the gate or valve is visually observed. Therefore, it is necessary to perform an operation for determining the opening degree of the vehicle, and an operation for transmitting opening degree data indicating the opening degree obtained thereby to the management center 410. The management center 410 also uses the opening degree data thus obtained. Manual operations are required, and many costs are spent for these operations.

On the other hand, due to the aging of the gate and valve opening / closing mechanism, the time required to fully open (fully close) the gate and valve is expected to change depending on the time elapsed since the installation of these operation objects. .
Nevertheless, in the conventional water management system described above, a fixed operation limit time is determined based on the fully open (fully closed) time indicated in the catalog of the gate or valve to be operated. For this reason, if the gate or valve operating mechanism deteriorates significantly due to secular change and the time required for full opening (full closing) exceeds the above-mentioned operation limit time, the gate or valve opens. There was a possibility that the output of the control signal might be stopped when it was not finished (it could not be closed).

  The present invention provides a slave station device capable of automatically compensating for missing actual measurement data in a remote monitoring control system for the purpose of water management and the like and a slave station device that realizes control in consideration of aging of equipment. With the goal.

The slave station apparatus of the first remote monitoring and control system according to the present invention comprises facility operating means and reporting means, and the reporting means comprises measuring means, learning means, estimating means, and compensation means. Configured.
The principle of the slave station apparatus of the first remote monitoring and control system according to the present invention is as follows.

  In the reporting means provided in the slave station device comprising equipment operating means for executing equipment operations in accordance with instructions from the master station and reporting means for reporting the feature quantity indicating the current status of the equipment to the master station, measurement is performed. The means measures a feature amount indicating the current state of the facility. The learning means extracts the relationship between the elapsed time from the start of output of the control signal output when the equipment operating means operates the equipment and the feature quantity obtained by the measurement by the measuring means. The estimation means uses the relationship extracted by the learning means to obtain an estimated value of the feature quantity indicating the current state of the facility based on the elapsed time from the start of output of the control signal. When the measurement result by the measurement unit cannot be obtained, the compensation unit reports the estimated value of the feature amount obtained by the estimation unit to the master station device instead of the measurement result.

The operation of the slave station apparatus of the first remote monitoring and control system configured as described above is as follows.
When the measuring means is operating normally, the learning means performs control by examining the change in the measurement result obtained by the measuring means according to the elapsed time from the start of output of the control signal output from the equipment operating means. It is possible to obtain a correspondence relationship between the signal output time and the feature amount that is the amount of action that appears in the facility. In this way, for example, the learning result regarding the correspondence between the output time of the control signal and the opening degree of the gate that is the feature amount can be accumulated during the past gate operation results, and can be used for estimation processing by the estimation means. .

  The estimated value obtained by this estimation means can be expected to faithfully reflect the current state of the equipment unless the characteristics of the equipment are significantly changed. Therefore, when the measurement result by the measuring means cannot be obtained, this estimated value is reported to the master station device instead, so that not only the missing measurement state is avoided and the automatic control process is completed, but also the master station is completed. In the apparatus, it is possible to obtain a total result almost equivalent to the case where a normal measurement value is obtained.

The slave station apparatus of the second remote monitoring and control system according to the present invention is configured such that, in the slave station apparatus of the first remote monitoring and control system described above, the learning means includes an operation speed table and a calibration means. .
The principle of the slave station apparatus of the second remote monitoring and control system according to the present invention is as follows.

  In the learning means provided in the slave station device of the first remote monitoring and control system described above, the operation speed table divides the fluctuation range of the feature quantity into a plurality of sections, and outputs the control signal output time in each of these sections. The increment of the feature quantity is shown, and the relationship between the output time of the control signal and the change in the feature quantity is used for the estimation process by the estimation means. The calibration means detects a deviation between the estimation result by the estimation means and the measurement result by the measurement means, and adjusts the increment value of the feature amount in each section of the operation speed table based on this deviation.

The operation of the slave station apparatus of the second remote monitoring and control system configured as described above is as follows.
Each time the facility is operated in accordance with an instruction from the master station device, a deviation between the measurement result by the measurement means and the estimation result by the estimation means is detected by the calibration means. Based on this deviation, the operation speed table Since calibration is performed, a change in performance due to aging such as an operation mechanism of the equipment can be reflected in the operation speed table.

The slave station apparatus of the third remote monitoring and control system according to the present invention comprises equipment operation means and reporting means. The equipment operation means includes control signal output means, operability timer, learning means, time An estimation unit and an adjustment unit are provided.
The principle of the slave station device of the third remote monitoring and control system according to the present invention is as follows.

  Control signal output in equipment operation means of a slave station apparatus comprising equipment operation means for executing equipment operations in accordance with instructions from the master station and reporting means for reporting feature quantities indicating the current status of the equipment to the master station The means outputs a predetermined control signal for causing the facility to perform an operation in accordance with an instruction from the master station. The operation limit timer stops the control signal after the operation limit time set from the start of output by the control signal output means has elapsed. The learning means extracts the relationship between the elapsed time from the start of output of the control signal and the feature value reported to the master station by the reporting means. The time estimation means estimates the time required to realize the maximum operation amount related to the facility using the relationship extracted by the learning means. The adjustment unit adjusts the operation limit time set in the operation limit timer based on the estimated value obtained by the time estimation unit.

The operation of the slave station apparatus of the third remote monitoring and control system configured as described above is as follows.
Based on the relationship between the output time of the control signal extracted by the learning means and the change in the feature quantity, for example, the time required to fully open or close the gate is estimated by the time estimation means. Thus, the operation limiting time set in the operation limiting timer is adjusted by the adjusting means.

  Thereby, for example, when the time required for opening and closing the facilities such as gates and valves changes due to the secular change due to the opening and closing mechanism of these facilities, this change can be reflected in the operation limit time.

As described above, according to the slave station device of the first remote monitoring and control system according to the present invention, when there is a lack of data essential for the operation of the remote monitoring and control system, Since it is possible to compensate for the data estimated based on the actual performance, it is possible to maintain the operation of the entire system regardless of missing data.
For example, even if the data indicating these opening degrees are missing during the automatic control related to the operation target such as gates and valves in the water management system, the missing data is estimated by the estimated value until the automatic control procedure is completed. This automatic control procedure can be completed by compensating. In this way, the automatic control procedure for the gate and valve in operation is completed for the time being to prevent the gate and valve from being left open (or left closed) and to ensure a stable supply of water. Can be realized.

  Further, as described above, by supplementing the missing data, work such as manual acquisition or manual input of the missing data, which is performed in the conventional remote monitoring and control system, is made unnecessary. Can do. This frees up the maintenance work from the first-aid work as described above, for example, the normal operation of the remote monitoring and control system, such as the removal of the cause of failure in the collection slave station where the missing measurement occurred. Can be prioritized to work that is indispensable.

Furthermore, according to the slave station apparatus of the second remote monitoring and control system according to the present invention, information on the secular change of the operation mechanism that actually operates the operation target such as the gate and the valve is accumulated as a learning result with a simple configuration. In addition, it can be reflected in the estimated value of the feature amount regarding these operation objects.
Further, according to the slave station device of the third remote monitoring and control system according to the present invention, the change in the feature amount with respect to the output time of the control signal when the operation target such as the gate and the valve is actually operated is learned, This result can be reflected in the operation time limit. As a result, the operation limit time can be set dynamically in anticipation of performance deterioration of the operating mechanism due to secular change, so that problems such as stopping the gate and valve before they are fully closed (or not fully opened) can be avoided. It can be surely prevented.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an embodiment of a slave station device of a remote monitoring control system according to the present invention.
Note that among the components shown in FIG. 1, the same components as those shown in FIG. 4 are denoted by the reference numerals shown in FIG. 4, and description thereof is omitted.
The collection-system slave station device 210 shown in FIG. 1 is a part of the water management system, and is an example of a slave station device according to the present invention.

In the sensor management unit 211 provided in the collection-system slave station device 210, the measurement value acquisition unit 212 receives the measurement result from the sensor 403, converts the measurement result into opening degree data, and passes it to the selector 216. A determination signal indicating whether or not the measurement by 403 is normally performed is input to the selector 216.
The correspondence table 213 shown in FIG. 1 holds an opening change amount per unit time, that is, an opening / closing speed, for each section in which the opening degree of the gate 402 is divided into a plurality of stages. For example, in the correspondence table 213, as shown in FIG. 2 (a), a first section with an opening degree less than 10%, a second section with an opening degree between 10% and less than 50%, and an opening degree between 50% and less than 90%. The design value and catalog value of the opening / closing speed of the gate 402 are stored in advance corresponding to the third section and the fourth section having an opening degree of 90% or more.

Based on the opening / closing speed of each section held in the correspondence table 213 and the control signal output from the equipment control unit 218, the estimated value calculation unit 214 is synchronized with the timing of the opening degree measurement by the sensor 403, for example. The opening degree of the gate 402 is estimated, and the estimation result is passed to the selector 216 and used for the processing of the update processing unit 215.
The update processing unit 215 detects a deviation between the estimated value obtained by the estimated value calculating unit 214 and the opening degree data obtained by the measured value obtaining unit 212, and based on the detected deviation amount, the corresponding table 213 corresponds. Update the opening / closing speed data of the section to be used.

By updating the correspondence table 213 in this way, a change in the opening / closing speed of the gate 402 due to aging of the gate drive mechanism 409 is reflected in the correspondence table 213, and the estimated value calculation unit 214 calculates the estimated value. Can be used for processing.
Further, according to the determination signal from the measurement value acquisition unit 212 shown in FIG. 1, the selector 216 selects the opening degree data obtained by the measurement value acquisition unit 212 or the estimation value obtained by the estimation value calculation unit 214. Then, the control signal is output to the control signal output unit 408 of the equipment control unit 218 and used for the processing of the report processing unit 217. For example, the report processing unit 217 periodically creates a report message including opening degree data received via the selector 216 and sends the report message to the collection-system master station device (not shown) via the communication processing unit 405. To do.

Further, in the equipment control unit 218 shown in FIG. 1, the timer value adjustment unit 219 calculates an appropriate operation time limit _TL based on the correspondence table 213 updated as described above, and this operation time limit time. Based on the value of _TL , the set value for the operation restriction timer 407 is adjusted.
Next, the operation of the collection-system slave station device 210 shown in FIG. 1 will be described in detail.
FIG. 3 is a flowchart showing the operation of the collection slave station device.

The operation instruction sent from the collection system master station device is passed to the equipment control unit 218 via the communication processing unit 405 shown in FIG. 1, and in response to this operation instruction, the control signal output unit 408 controls the control signal. The output is started, and the timing operation by the operation restriction timer 407 is started (steps 301, 302, and 303).
As described above, the output of the control signal is started, and after the gate drive mechanism 409 starts the operation of the gate 402, the measurement value acquisition unit 212 measures the opening degree data based on the output of the sensor 403. On the other hand, the estimated value calculation unit 214 calculates the estimated value of the opening degree data (steps 304 and 305).

  When the sensor 403 is operating normally, the opening data measurement process in step 304 is normally completed (positive determination in step 306), and the opening data obtained by the measurement is reported via the selector 216. The data is transferred to the processing unit 217, and based on this opening degree data, a report process to the collection-system master station device is performed (step 307). Also, based on the opening degree data obtained in step 304 and the estimated value obtained in step 305, the update processing unit 215 performs update processing of the correspondence table 213, and further updates the correspondence table. Based on 213, the timer value adjustment unit 219 adjusts the set value for the operation limit timer 407 (step 308).

  The update processing unit 215, for example, in the process of operating the gate 402 from the fully closed state to the fully open state, every time the estimated value calculating unit 214 obtains a value that becomes the boundary of each section shown in FIG. The difference between the measured value of the opening degree data obtained based on the output of the sensor 403 and the estimated value obtained by the estimated value calculation unit 214 is obtained, and this difference is divided by the duration of the control signal so far. Thus, the error of the opening / closing speed in the corresponding section is calculated. By adding the error thus determined to the opening / closing speed of the corresponding section, for example, as shown in FIG. 2B, due to the influence of the change in performance of the gate drive mechanism 409, the resistance of water, and the like, The opening / closing speed decreases in the first section and the fourth section, and conversely, the actual condition that the opening / closing speed increases in the second section and the third section can be reflected in the correspondence table 213. Depending on the direction of the gate operation, for example, the correspondence table 213 can be configured from a table applied when the gate is opened and a table applied when the gate is closed. Of course, it is also possible to form a correspondence table showing the opening / closing speed divided into smaller sections, and it is also possible to connect the opening degree and the opening / closing speed by an appropriate function.

On the other hand, the timer value adjustment unit 219 obtains a difference between the operation limit time T _L newly obtained based on the updated correspondence table 213 and the original operation limit time T _L0, and based on this difference, the operation limit By adjusting the remaining time to be measured by the timer 407, the deviation detected for the opening degree data and the estimated value can be immediately reflected in the operation of the operation limit timer 407.

  Thereafter, it is determined whether or not the operation limit time has elapsed by the operation limit timer 407 (step 310). If the determination in step 310 is negative, the control signal output unit 408 causes the sensor management unit 211 to Whether or not the operation related to the gate 402 has been completed is determined based on whether or not the notified opening degree data has reached the target opening degree (step 311). In the case of negative determination in step 311, the output of the control signal by the control signal output unit 408 is continued, and the opening degree data indicating the opening degree of the gate 402 and the processing related thereto (steps from step 304 to step 304). 308) is performed again.

  When a failure occurs in the sensor 403 during the operation of the gate 402 as described above and an abnormality occurs in the measurement of the opening degree data (negative determination in step 306), the selector 216 obtains the estimated value calculation unit 214. The estimated value of the opening degree data thus selected is selected, and in response to this, the estimated value is reported to the collection-system master station device by the report processing unit 217 (step 309). At this time, the report processing unit 217 creates a report message including information indicating that a failure has occurred in the sensor 403 together with the estimated value of the opening degree data, and sends the report message to the collection-system master station device via the communication processing unit 405. It is desirable to perform processing.

Thereafter, determination processing regarding the completion of the operation in step 311 is performed based on the estimated value of the opening data, and when the estimated value of the opening data reaches the target opening (affirmative determination in step 311). Then, the output of the control signal by the control signal output unit 408 is stopped (step 312), and the process related to the gate operation is completed.
Here, as described above, the state of the facility is appropriately reflected in the correspondence table 213 by the processing of the update processing unit 215. Therefore, the estimated value obtained by the estimated value calculating unit 214 is, for example, this collection system. It is considered that the actual opening degree of the gate 402 is faithfully shown in a relatively short period such as a period in which the gate 402 related to the slave station device 210 is automatically controlled.

Therefore, by determining the completion of the operation based on the estimated value described above, the collection-system slave station apparatus 210 performs the operation related to the gate 402 instructed from the collection-system master station apparatus, regardless of the abnormality of the sensor 403. Can be completed reliably.
In addition, based on the estimated value of the opening degree data reported as described above, the collection-system master station device also normally performs display processing relating to the display output terminal 413 (see FIG. 4) and aggregation processing such as flow rate data. Can be completed.

  In other words, regardless of the malfunction of the sensor 403 that has occurred in the collection-system slave station device 210, the process related to the entire water management system can be normally completed based on the reliable estimated value obtained by the estimated value calculating unit 214. it can. As a result, for example, in order to complete a form output process based on scheduled data, etc., work for obtaining necessary opening degree data manually is also required for manually inputting opening degree data obtained by such work. Can also be made unnecessary.

  Further, as described above, the report processing unit 217 provided in the collection-system slave station apparatus 210 reports a message including information on the failure of the sensor 403 together with the estimated value of the opening degree data, so that the collection-system master station apparatus However, since it is possible to grasp the failure that has occurred in the collection-system slave station device 210, it is possible to promptly instruct measures such as replacement of the sensor 403.

  Of course, if no abnormality has occurred in the sensor 403, the completion of the operation in step 311 is determined based on the opening degree data obtained based on the output of the sensor 403. In addition, it is determined in step 311 that the operation has been completed regardless of whether the opening degree data based on the measurement result or the estimated value of the opening degree data is passed from the sensor management unit 211 to the control signal output unit 408. Prior to the operation, when the operation time limit elapses (Yes in Step 310), the output of the control signal is immediately stopped (Step 312), and the equipment such as the gate 402 is protected.

  As described above, in the collection-system slave station apparatus 210 shown in FIG. 1, the time required for the gate 402 to be actually fully opened or fully closed by the timer value adjustment unit 219 is set as the set value of the operation limit timer 407. Can be reflected. As a result, even when the time required to fully open or close the gate 402 significantly increases with the deterioration of the performance of the gate drive mechanism 409 or the like, a sufficient operation time limit can be set. Both the reliable completion of the operation of 402 and the reliable protection of equipment such as the gate 402 can be achieved at the same time.

As described above, according to the present invention, the operation status of equipment installed in a remote place is estimated based on a control signal for driving the equipment, and when a measurement value regarding the operation status is not obtained, Missing data can be supplemented by the estimated value, and the operation of the entire remote monitoring control system can be completed.
Such a feature is extremely important in a system that remotely monitors and controls equipment distributed over a wide area, such as a water management system, and that is basically required to operate without interruption. Useful.

It is a figure which shows embodiment of the sub_station | mobile_unit apparatus of the remote monitoring control system concerning this invention. It is a figure which shows the example of a correspondence table. It is a flowchart showing operation | movement of a collection type | system | group slave station apparatus. It is a figure which shows the structural example of the conventional water management system. It is a figure explaining the automatic control in a water management system.

Explanation of symbols

210, 401 Collection system slave unit 211, 406 Sensor management unit 212 Measurement value acquisition unit 213 Correspondence table 214 Estimated value calculation unit 215 Update processing unit 216 Selector 217 Report processing unit 218 Equipment control unit 219 Timer value adjustment unit 402 Gate 403 Sensor 404 Equipment control unit 405 Communication processing unit 407 Operation restriction timer 408 Control signal output unit 409 Gate drive mechanism 410 Management center 411 Collection system master station device 412 Data processing device 413 Display output terminal 414 Operation terminal

Claims (3)

In a slave station device comprising equipment operation means for executing equipment operations in accordance with instructions from the master station, and reporting means for reporting to the master station a feature value indicating the current state of the equipment,
The reporting means includes
A measuring means for measuring a characteristic amount indicating the current state of the facility;
Learning means for extracting the relationship between the elapsed time from the start of output of the control signal output when the equipment operating means operates the equipment and the characteristic amount obtained by measurement by the measuring means;
Using the relationship extracted by the learning means, an estimation means for obtaining an estimated value of a feature amount indicating the current state of the equipment based on an elapsed time from the output start of the control signal;
Complementing means for reporting to the master station device an estimated value of the feature quantity obtained by the estimating means instead of the measuring result when a measurement result by the measuring means cannot be obtained. Station equipment. In the slave station apparatus of the remote monitoring control system according to claim 1,
The learning means includes
The variation range of the feature quantity is divided into a plurality of sections, the increment of the feature quantity with respect to the output time of the control signal in each section is shown, and the relationship between the output time of the control signal and the change in the feature quantity is the estimation means An operation speed table for estimation processing by
A calibration unit that detects a deviation between the estimation result obtained by the estimation unit and the measurement result obtained by the measurement unit, and adjusts an increment value of the feature amount in each section of the operation speed table based on the deviation. A slave station device characterized by. In a slave station device comprising equipment operation means for executing equipment operations in accordance with instructions from the master station, and reporting means for reporting to the master station a feature value indicating the current state of the equipment,
The facility operating means is
Control signal output means for outputting a predetermined control signal for causing the equipment to perform an operation in accordance with an instruction from the master station;
An operation limit timer for stopping the control signal after an elapse of the operation limit time set from the output start by the control signal output means;
Learning means for extracting a relationship between an elapsed time from the start of output of the control signal and a feature amount reported to the master station by the reporting means;
Using the relationship extracted by the learning means, a time estimation means for estimating a time required to realize the maximum operation amount related to the facility;
A slave station apparatus comprising: adjusting means for adjusting an operation limit time set in the operation limit timer based on the estimated value obtained by the time estimation means.

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