JP2000207010A - Plant controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify an input operation by an operator as much as possible and to allow the operator to easily confirm and monitor the operation state of plant control corresponding to the input operation when the plant control is performed. SOLUTION: Relating to this plant controller which is provided with an input processing means 2 which processes operation control input from an input- output device 1 to each end to be controlled of a plant 7, a control signal calculating means 4 which operates a control operation output value to each end to be operated of the plant from the operation control input, a control signal outputting means 5 which outputs the control operation output value to a corresponding end to be operated of the plant 7 and a display processing means 3 which displays the control operation output value from the means 5 to each end to be operated of the plant 7 and the process value of each end to be operated of the plant 7 on the device 1, an operation rate deciding means 11 which decides a corresponding operation rate switching value from the operation control input to automatically change operation rates is arranged, and the means 4 calculates the control operation output value based on the changed operation rate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant control apparatus, and more particularly, to monitoring and controlling the operating state of various plants in which all the equipment such as power generation equipment are integrated. The present invention relates to a plant control device.

[0002]

2. Description of the Related Art Conventionally, a monitoring computer for a plant of this type, in this case, for example, a power generation plant, generally uses a control computer (computer).
At the core. Here, FIG. 6 shows a schematic configuration of a conventional plant control device in a power plant.

That is, in the plant configuration shown in FIG. 6, a conventional plant control device includes various equipments constituting a power generation plant (hereinafter, simply referred to as a “plant”) 7 to be monitored and controlled, ie, a control operation. For example, the operated-end control devices 6 that perform monitoring control such as boiler operation control for each of the operated-ends of a given plant, and the entirety of these operated-end control devices 6 are controlled as a result. And a process control device 100 including a control computer and the like for controlling the entire power generation plant 7 itself. The process control device 100 includes a keyboard, a CRT on which an operator performs interactive operations for control. And the like.

FIG. 7 shows the process control device 100.
FIG. 2 is a block diagram showing the configuration of the system. The operator performs input operation of data for plant control by using the keyboard of the input / output device 1, and the operation output value is used as an input interface of the process control device 100. It is input to the control signal calculation means 4 via the input processing means 2 provided. On the other hand, the process values of the equipment of the plant 7 are also input to the control signal calculating means 4 in the same manner.

The control signal calculating means 4 calculates a control signal output value and a control signal output time from an operation input value input by an operator and a return value from each equipment of the plant 7. The operation control signal of the operation result is
It is output to the operated end control device 6 through the control signal output means 5 provided as a control signal output interface,
The operated end control device 6 controls the operation of each facility device of the plant 7, that is, each operated end, in response to the input control signal.

On the other hand, the operation output value inputted to the input processing means 2 is obtained from the control signal calculation means 4 and the process value of each equipment which is each operated end of the plant 7 controlled by the control signal is obtained. After passing through the display processing means 3 provided as an output interface to the input / output device 1 from each facility device of the plant 7, the display is displayed on the CRT of the input / output device 1, and the operator
On the basis of the above display, the overall operation state of the plant 7 is monitored and controlled.

[0007]

As described above, the operator, in monitoring the entire operation of the plant 7 to be controlled and controlling the operation of the plant 7, is required to operate each equipment of the plant 7, that is, each of the operated terminals. Although the operation output value is set while monitoring the process value output from the control unit, the conventional process control device has the following problems.

That is, in controlling the increase or decrease of the process value, in order to control each facility and equipment of the plant 7 as quickly as possible, the operator must always correctly recognize the operation rate of the output to the input / output device 1. And where to change the operation rate every time the output operation is performed, it is necessary to accurately judge the characteristics of the input / output device 1 based on the characteristics of the input / output device 1. Apparatus 1
There is a disadvantage that it is not possible to directly confirm information such as what state the operation rate of the output is for and the timing at which the operation rate is switched.

When a relatively large output change is required of the input / output device 1, the operator needs to continue the control operation for monitoring for a long time until the operation result reaches the target value. Work load increases due to the

Furthermore, the operator cannot always recognize how the plant value follows the operation output value from the input / output device 1, and in addition to this,
It has also been difficult to determine whether or not the plant value follows the operation output value properly.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. It is an object of the present invention to simplify the input operation by an operator as much as possible in plant control, and to improve the operation. An object of the present invention is to provide a plant control device that enables a worker to easily confirm and monitor an operation state of plant control corresponding to an input operation.

[0012]

According to one aspect of the present invention, there is provided an input processing means for processing an operation control input from an input / output device to each operated end of a plant. Control signal calculation means for calculating a control operation output value from the operation control input to each operated end of a plant; control signal output means for outputting the control operation output value to a corresponding operated end of a plant; A control processing output value from the control signal output means to each operated end of the plant, and a display processing means for displaying a process value of each operated end of the plant on the input / output device; An operation rate determining means for automatically changing an operation rate by determining a corresponding operation rate switching value from a control input is provided. Is characterized in the that to calculate the control operation output value based on.

In the plant control apparatus according to the first aspect of the present invention, the operation control input input to the control signal calculation means via the input processing means, and thus the control operation target value, is converted by the operation rate determination means into the operation rate corresponding to the operation target value. The operation rate switching value is calculated from the switching ratio to determine the operation rate in the continuous operation, and the control signal calculation means calculates the operation output value based on the determined operation rate. This is performed according to the plant value.

According to a second aspect of the present invention, in the plant control apparatus according to the first aspect, the operation rate determining means includes a plurality of operation rate switching values corresponding to each operated end of the plant in advance. The operation rate switching value setting storage unit for setting and storing the operation rate switching value is provided.

In the plant control device according to the second aspect of the present invention, the operation rate switching value for each operated end of the plant is registered in the operation rate switching value setting storage unit in advance, and the operation rate determining means outputs the operation control signal. Each time it is entered,
The corresponding operation rate switching value is retrieved from the operation rate switching value setting storage unit, and the operation rate is automatically or continuously changed automatically.

According to a third aspect of the present invention, in the plant control apparatus according to the first aspect, the state of the operation rate determined by the operation rate determination means or the state of a change in the operation rate with respect to continuous operation is determined. It is characterized in that an operation rate state storage unit for storing and displaying on the input / output device is provided.

In the plant control device according to the third aspect, every time the operation control signal is input, the state of the operation rate determined by the operation rate determination means or the state of the change of the operation rate with respect to the continuous operation is determined by the operation rate. The state of the operation rate stored in the state storage unit and the state of the operation rate change with respect to the continuous operation are displayed on the input / output device.

According to a fourth aspect of the present invention, in the plant control device according to the first aspect, it is determined whether an operation control input to the plant from the input / output device is a continuous setting request. It is characterized in that a continuous operation judging means for automatically continuing the control in the case of a setting request is provided.

In the plant control device according to the fourth aspect, the continuous operation determining means determines whether or not the operation control input to the plant from the input / output device is a continuous setting request. Control continues automatically.

According to a fifth aspect of the present invention, there is provided a plant control apparatus, comprising: an input processing means for processing an operation control input from the input / output device to each operated end of the plant; Control signal calculating means for calculating a control operation output value, control signal output means for outputting the control operation output value to a corresponding operated end of the plant, and A control processing output value, and a display processing means for displaying the process value of each operated end of the plant on the input / output device, wherein control of each of the operated ends of the plant from the control signal output means is performed. An operation history storage unit for storing an operation history of an operation output value and a process value of each operated end of the plant in an operation history storage unit; It is characterized in that the trend of the control operation output value and the process value from the gravel is provided an operation history display processing means for displaying on the output device.

In the plant control apparatus according to the fifth aspect of the present invention, the operation history storage means stores the control operation input value to each operated end and the operation history of the process value of each operated end in the operation history storage means. The trend of the operation history stored in the operation history storage unit is displayed on the input / output device via the operation history display processing unit.

According to a sixth aspect of the present invention, there is provided a plant control apparatus, comprising: an input processing means for processing an operation control input from the input / output device to each operated end of the plant; Control signal calculating means for calculating a control operation output value, control signal output means for outputting the control operation output value to a corresponding operated end of the plant, and A display control means for displaying the control operation output value and the process value of each operated end of the plant on the input / output device. Along with providing a curve storage means, comparing the process value of each operated end of the plant with the process value ideal change curve,
A tracking state determining means for determining whether or not the process value deviates from the ideal change curve of the process value, and a tracking state display processing means for separately displaying the determination result of the tracking state are provided.

In the plant control apparatus according to the sixth aspect, the follow-up state determining means compares the process value at that time with the ideal change curve and determines whether there is a deviation of the process value from the ideal change curve. The determination result is displayed on the input / output device via the tracking state display processing means.

According to a seventh aspect of the present invention, in the plant control apparatus according to the sixth aspect, the process value ideal change curve stored in the monitoring curve storage means is a process value of each operated end of the plant. Is created by the monitoring curve creation means that refers to the operation history of (1).

In the plant control device according to the seventh aspect, the ideal change curve of the process value with respect to the operation output value is created by the monitoring curve creation means based on the ideal change curve stored in the monitoring curve storage means.

[0026] The plant control device according to claim 8 is an input processing means for processing an operation control input from the input / output device to each operated end of the plant, and an input processing means for processing the operation control input to each operated end of the plant. Control signal calculating means for calculating a control operation output value, control signal output means for outputting the control operation output value to a corresponding operated end of the plant, and A control operation output value, and a process control device having a display processing means for displaying a process value of each operated end of the plant on the input / output device, wherein the input / output device, and the process control device, A plurality of input / output devices are provided to control the operation of each operated end of the plant from each input / output device. A shared storage device that is capable of storing an operation rate corresponding to an operation control input from each of the input / output devices, and an operation state display unit that displays an operation rate stored in the shared storage device; At the time of operation control input by the input / output device, the operation rate displayed on the operation state display means can be referred to.

In the plant control device according to the present invention, the operation rate corresponding to the control operation value of each process control device is stored in the shared storage device, and the stored operation rate is displayed on the operation state display means. Reference can be made in common from each input / output device.

According to a ninth aspect of the present invention, there is provided a plant control device, comprising: an input processing means for processing an operation control input from the input / output device to each operated end of the plant; Control signal calculating means for calculating a control operation output value, control signal output means for outputting the control operation output value to a corresponding operated end of the plant, and A control operation output value, and a process control device having a display processing means for displaying a process value of each operated end of the plant on the input / output device, wherein the input / output device, and the process control device, A plurality of input / output devices are provided so that operation control of each operated end of the plant can be performed from each input / output device. Possible, and a shared storage device for storing an operation history of the control operation output value to each of the operating end of the plant, and the process value of each of the operating end of the plant,
Operation history display processing means for displaying an operation history stored in the shared storage device, so that the operation history displayed on the operation history display processing means can be referred to at the time of operation control input by each of the input / output devices. It is characterized by having.

In the plant control apparatus according to the ninth aspect, the control operation value of each process end by each process control apparatus and the operation history of the process value of each operation end are commonly stored in the shared storage device. The stored operation history is displayed on each input / output device via the operation history display processing means.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a plant control apparatus according to another embodiment of the present invention will be described below with reference to FIGS.
This will be described in detail with reference to FIG. In the drawings of these embodiments, the same reference numerals as those in the drawings of the conventional example denote corresponding parts.

First embodiment. FIG. 1 is a block diagram showing a configuration of a process control device in a plant control device to which the first embodiment of the present invention is applied. The first embodiment corresponds to claims 1 to 4.

In the first embodiment shown in FIG. 1, the input processing means 2, the display processing means 3, the control signal calculation means 4, and the control signal output means are provided in the same manner as in the case of the conventional plant control apparatus. 5, a FAST / SLOW determination unit (operation rate determination unit) 11, an operation rate switching setting storage unit 12, a FAST / SLOW determination storage unit (operation rate determination storage unit) 13, and a The operation judging means 14 is attached to each of them, and as will be described in detail below, each of the attached parts obtains a corresponding action.
The basic operation of the apparatus itself, including the cases of the fourth to fourth embodiments, is almost the same as that of the conventional example described above.

Here, the FAST / SLOW determination means 11
Is an operation target value set by the operator input to the control signal calculation means 4 from the input / output device 1 via the input processing means 2, and an operation target value set and stored in the operation rate switching setting storage unit 12 described below. After calculating the operation rate switching value from the operation rate switching ratio with respect to the value, the operation rate in the continuous operation is determined corresponding to the operation rate switching value. Then, the control signal calculating means 4 outputs FAST / S
The operation output value is calculated based on the operation rate determined by the LOW determination unit 11.

In the first embodiment, FAST /
Although the case where the SLOW determination means 11 has a two-stage switching format of FAST / SLOW has been described, it is needless to say that a multi-stage switching format having more than two stages of switching values may be used.

The rate switching setting storage unit 12 stores the F
The AST / SLOW determination means 11 uses the rate switching ratio information with respect to the operation target value used in the calculation of the rate switching value,
It is provided in order to individually set and register each type of equipment of the plant 7 in advance.

On the other hand, the FAST / SLOW judgment storage unit 13
Is provided for storing the operation rate determined by the FAST / SLOW determination unit 11. The display processing unit 3 uses the input / output device based on the operation rate information stored in the FAST / SLOW determination storage unit 13. 1 CRT
In contrast to the above, the operation state of each device
Two-stage switching display such as "ST" or "SLOW"
Alternatively, the operation rate is numerically displayed as needed. That is, this display allows the operator to visually recognize and easily grasp the operation rate for each operated end of the plant 7.

Further, the continuous operation determining means 14 determines that the operation is a continuous operation request by the operator setting the operation target value without having to continue the input operation from the input / output device 1 again. After that, until the process value reaches the operation target value, an input operation from the operator to the operated end control device 6 is simulated.

Therefore, in the continuous operation determining means 14,
For short control operations that do not require setting the operation target value again, conventional operations are performed. For control operations in which the operation key must be continuously depressed for a long time, operations for setting the target value are performed by the operator. Can automatically determine each of these control operations intended by the user.

In this case, as for the operation target value set by the operator, whether the plant value reaches the target value,
Alternatively, even when the continuous operation is being simulated, the operation is cleared when the operator executes the next control operation.

Second embodiment. FIG. 2 is a block diagram showing a configuration of a process control device in a plant control device to which the second embodiment of the present invention is applied. The second embodiment corresponds to claims 5 to 7.

In the second embodiment shown in FIG. 2, the input processing means 2, the display processing means 3, the control signal calculation means 4, and the control signal output means are similar to the case of the plant control apparatus according to the conventional example. 5, an operation history storage unit 31, an operation history storage unit 32, and an operation history display processing unit 33;
The monitoring curve storage means 34, the following state determination means 35, and the monitoring curve creation means 35 are respectively provided.

Here, the operation history storage means 31 stores the operation output value and the process value from the control signal calculation means 4 as the operation history in the operation history storage means 32 at the next stage, and the operation history display processing means 33 The operation history of the operation output value or the process value stored from the operation history storage unit 32 is extracted, and the operation history is displayed on the CRT of the input / output device 1. As a display form at this time, for example, a trend graph or the like can be used.

Therefore, according to the means 31 to 33 relating to these operation histories, the display of the operation histories on the CRT of the input / output device 1 makes it possible for an operator to operate the plant 7.
The operation progress (operation history) for each operated end can be visually recognized and easily grasped.

Next, the monitoring curve storage means 34 stores an ideal change curve of the process value with respect to the operation output value from the control signal calculation means 4. The information is stored in correspondence with the type of each operated end of a certain plant 7 and the like.

The following state determination means 35 compares the process value for the operation output value from the control signal calculation means 4 with the ideal change curve of the process value stored in the monitoring curve storage means 34, This is to determine whether or not the process value has deviated from the ideal change curve of the process value. The determination result is obtained by classifying the presence or absence of the departure on the CRT of the input / output device 1 via the display processing means 3. Display.

For example, when there is a deviation of the change of the process value from the ideal change curve of the process value, the color is changed for the corresponding operation end of the operation object, the instantaneous value and the operation history at that time. It is preferable to display the display in a state that can be easily distinguished from the normal display, such as a display, a flicker display, or a display with an x mark. It is possible to visually recognize the insufficiency or failure of the control operation and easily grasp it without detailed examination. Further, at this time, it is also possible to give an ideal change curve of the process value corresponding to each of the individual operation ends, thereby making it possible to perform the tracking determination with higher accuracy.

In this case, as for the ideal change curve of the process value stored and set in the monitoring curve storage means 34, the monitoring curve creation means 35 is used and the operation history storage means 32 is used.
Can be easily created from the operation history of the operation output value or the process value stored in the storage device, and thus the tracking determination with higher accuracy can be performed.

Third and fourth embodiments. FIG. 3 is a configuration explanatory view showing an outline of a plant control device to which each of the third and fourth embodiments of the present invention is applied.

In the third and fourth embodiments shown in FIG. 3, the plant control device uses two process control devices 100a and 100b for performing overall control of the plant 7 as a schematic configuration. The process control devices 100a and 100b each include an input / output device 1
a, 1b, and a shared storage device 110 that can be referenced from each of the process control devices 100a, 100b.
Is provided.

In this case, in the third and fourth embodiments, two process control devices 100a, 100
However, as will be apparent from the description that follows, more than two devices may be used, and the shared storage device 110 for each of the process control devices 100a and 100b may be, for example, a shared storage device. It is not limited to a physically shared device such as a disk, and it is sufficient to use another means for making the contents of each storage device identical on each of the process control devices 100a and 100b. .

FIG. 4 is a block diagram showing a configuration of a process control device in a plant control device to which the third embodiment included in the above-described device configuration of FIG. 3 is applied. The third embodiment corresponds to claim 8.

In the third embodiment shown in FIG. 4, the FAST / SLOW determination storage unit 13 in the first embodiment is used.
In response to this, this is provided as a storage operation status storage table 51 on the shared storage device 110, and an operation status display means 50 for displaying the stored content is provided.

In the third embodiment, the control operation performed by the operator from one of the input / output devices 1a is performed in the same manner as in the above-described first embodiment.
00a, the corresponding operated end of the plant 7 is controlled as expected after passing through the operated end control device 6 from the input processing means 2, the control signal calculating means 4, and the control signal output means 5, but in this case, , At the same time FAST / SLOW determination means 1
1 to the operation rate in the control operation, the shared storage device 11
The operation rate is stored in the operation state storage table 51 as 0, and the stored operation rate is displayed on the operation state display means 50 and the other process control device 10
0b is also displayed on the corresponding operation state display means.

Therefore, in the case of the third embodiment,
At this time, the operation rate is set to one of the process control devices 10.
0a is displayed on the operation status display means 50 through the operation status storage table 51 of the other process control device 10.
Since the corresponding operation status display means on the 0b side is similarly displayed through the operation status storage table 51, the operation rates can be commonly referred to in both of the input / output devices 1a and 1b. Not only from the one input / output device 1a described above, but also the control operation from the other input / output device 1b to the corresponding operated end becomes possible.

Next, FIG. 5 is a block diagram showing a configuration of a process control device in a plant control device to which the fourth embodiment included in the above-described device configuration of FIG. 3 is applied. The fourth embodiment corresponds to claim 9.

In the fourth embodiment shown in FIG. 5, the operation history storage means 32 in the second embodiment is provided on the shared storage device 110 in the same manner as in the second embodiment. Constitute. In the fourth embodiment, the control operation performed by the operator from one input / output device 1a side is as follows:
As in the case of the second embodiment described above, the input processing means 2, the control signal calculation means 4, and the control signal output means 5 of the process control device 100a transmit the operated end control device 6
After that, the corresponding operated end of the plant 7 is controlled as expected. In this case, at the same time, the operation history storage unit 31 is controlled.
Thus, the operation history of the control operation is stored in the operation history storage unit 32 which is the shared storage device 110, and the stored operation history is transmitted to the input / output device 1a via the operation history display processing unit 33. It is displayed on the CRT and also on the CRT of the input / output device 1b via the corresponding operation history display processing means of the other process control device 100b.

Therefore, in the case of the fourth embodiment,
The operation history at this time is stored in the operation history storage means 32 of the shared storage device 110, and the operation history is displayed on both of the input / output devices 1a and 1b, respectively. Here again, just as in the case of the third embodiment, the one input / output device 1a
In addition to the above, a control operation from the other input / output device 1b to the corresponding operated end is also enabled.

Thus, these third and fourth
In each of the embodiments, the operation rate and the operation history for each operated end of the plant 7 (operation history) are displayed by the operator on the display of the operation rate and the operation history.
Can be visually recognized and easily grasped.

A program for implementing each means of the process control device according to each of the above-described embodiments may be stored in a computer-readable storage medium such as a magnetic disk or an optical disk.

By supplying a program from this storage medium to a computer or the like constituting an existing process control device such as a plant, the same operation and effect as in the above-described embodiment can be obtained.

[0061]

As described above in detail in each embodiment, according to the first aspect of the present invention, input processing means for processing an operation control input to each operated end of a plant from an input / output device; Control signal calculation means for calculating a control operation output value from the operation control input to each operated end of the plant, control signal output means for outputting the control operation output value to a corresponding operated end of the plant, and control signal output means A control operation output value to each operated end of the plant from the control processing unit, and a display processing means for displaying the process value of each operated end of the plant on the input / output device. Operation rate determination means for automatically changing the operation rate by judging the operation rate switching value is provided, and the control signal calculation means outputs a control operation based on the changed operation rate. Since the value is calculated, the operation rate input ratio to the operation target value is determined by the operation rate determination unit using the operation control input input to the control signal calculation unit via the input processing unit, and eventually the control operation target value. The operation rate switching value is calculated from the operation rate, the operation rate in the continuous operation is determined, and the operation output value based on the determined operation rate can be calculated by the control signal calculation means. It can be performed according to the plant value. After one control operation is started, the operator can continue the control without being aware of the operation rate until the start of the next control operation. There are excellent features.

According to a second aspect of the present invention, in the plant control apparatus according to the first aspect, the operation rate determination means includes a switching operation rate switch corresponding to each operated end of the plant in advance. Since an operation rate switching value setting storage unit for setting and storing a value is provided, the same effect as that of the first embodiment can be obtained, and every time an operation control signal is input by the operation rate determination unit. Then, the corresponding operation rate switching value is retrieved from the operation rate switching value setting storage unit, and the operation rate is automatically set.
Alternatively, it is possible to automatically change the operation rate continuously, and if the switching ratio of the operation rate to the operation target value is set in advance for each type of operation end, the trouble of the control operation input can be saved. .

According to the third aspect of the present invention, in the plant control apparatus according to the first aspect, the operation rate state determined by the operation rate determination means or the operation rate change state with respect to continuous operation. Is provided and an operation rate state storage unit for displaying the operation rate on the input / output device is provided, so that the same effect as that of claim 1 can be obtained. The state of the operation rate and the state of the change in the operation rate determined by the means can be stored in the operation rate state storage unit, and the state of the stored operation rate and the state of the change in the operation rate can be displayed on the input / output device. As a result, the determined operation rate can be visually recognized, and whether or not the control operation is normally performed can be easily confirmed.

According to a fourth aspect of the present invention, in the plant control apparatus according to the first aspect, it is determined whether or not the operation control input to each operation terminal of the plant from the input / output device is a continuous setting request. And the continuous operation determining means for automatically continuing the corresponding control in the case of a continuous setting request is provided, so that the same effect as in claim 1 can be obtained. It is possible to determine whether the operation control input from the input / output device is a continuous setting request, and if the operation control input is a continuous setting request, the corresponding control can be automatically continued. There is no need to keep operating the keys, and the work load can be effectively reduced.

According to a fifth aspect of the present invention, in the plant control device having the same configuration as the first aspect,
Operation history storage means for storing the control operation output value from the control signal output means to each operated end of the plant and the operation history of the process value of each operated end of the plant in the operation history storage means is provided and stored. The operation history display processing means for displaying the trend of the control operation output value and the process value from the operation history obtained on the input / output device is provided, and the operation history storage means stores the operation history of the control operation output value and the process value. Can be stored in the operation history storage means, and the trend of the operation history can be displayed on the input / output device via the operation history display processing means. Therefore, the control result can be easily recognized and confirmed.

According to a sixth aspect of the present invention, in the plant control device having the same configuration as the first aspect,
A monitoring curve storage means for storing a standard ideal change of the process value with respect to the operation time is provided in advance, and the process value of each operated end of the plant is compared with the process value ideal change curve, and the process value ideal change curve is calculated. The tracking state determining means for determining the presence or absence of a deviation of the process value, and the tracking state display processing means for separately displaying the determination result, so that the tracking state determining means, the process value at that time and By comparing with the ideal change curve, it is possible to determine whether the process value deviates from the ideal change curve,
In addition, the judgment result can be displayed on the input / output device via the follow-up state display processing means, whereby the abnormality of the plant can be accurately and promptly confirmed, and the countermeasure can be taken promptly.

According to the seventh aspect of the present invention, in the plant control apparatus according to the sixth aspect, the ideal process value change curve stored in the monitoring curve storage means stores the process value at each operated end of the plant. Since the monitoring curve is created by the monitoring curve creating means referring to the operation history of the value, the same effect as in the case of claim 6 is obtained, and the monitoring curve is created based on the ideal change curve stored in the monitoring curve storage means. The creation means can easily create an ideal change curve of the process value with respect to the operation output value.

According to the eighth aspect of the present invention, an input processing means for processing an operation control input from the input / output device to each operated end of the plant, and from the operation control input to each operated end of the plant. Control signal calculating means for calculating the control operation output value of the plant, control signal output means for outputting the control operation output value to the corresponding operated end of the plant, and control of each operated end of the plant from the control signal output means In a plant control device using a process control device including an operation output value, and a display processing means for displaying a process value of each operated end of the plant on the input / output device, a plurality of input / output devices, and a plurality of process control devices are provided. Operation control for each operated end of the plant can be performed from each input / output device, and can be commonly used by each process control device. A shared storage device for storing an operation rate corresponding to the operation control input; and operation state display means for displaying the operation rate to be stored, wherein an operation displayed on the operation state display means at the time of operation control input by each input / output device. Since the configuration is such that the rate can be referred to, the operation rate corresponding to the control operation value in each process control device can be stored in the shared storage device, and the stored operation rate can be displayed on the operation state display means. Can be commonly referred to from each input / output device and operated individually.

According to the ninth aspect of the present invention, in the same manner as in the eighth aspect, in a plant control apparatus having a plurality of input / output devices and a plurality of process control devices, the plant control device is commonly used by each process control device. A shared storage device capable of storing operation history of control operation output values to each operated end of the plant, process values of each operated end, and operation history display processing means for displaying the stored operation history are provided. Since the operation history displayed on the operation history display processing means can be referred to at the time of operation control input by each input / output device, the operation history for each operated end can be stored in the shared storage device, and can be stored. The operation history can be displayed on the operation history display processing means, and the display can be operated by referring to the input / output devices in common.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a process control device in a plant control device to which a first embodiment of the present invention is applied.

FIG. 2 is a block diagram illustrating a configuration of a process control device in a plant control device to which a second embodiment of the present invention has been applied;

FIG. 3 is a configuration explanatory view showing an outline of a plant control device to which each of the third and fourth embodiments of the present invention is applied;

FIG. 4 is a block diagram showing a configuration of a process control device in a plant control device to which a third embodiment of the present invention is applied.

FIG. 5 is a block diagram showing a configuration of a process control device in a plant control device to which a fourth embodiment of the present invention is applied.

FIG. 6 is a configuration explanatory view showing an outline of a conventional plant control device.

FIG. 7 is a block diagram showing a configuration of a process control device in a conventional plant control device.

[Explanation of symbols]

100, 100a, 100b Process control device 110 Shared storage device of each process control device 1, 1a, 1b Input / output device 2 Input processing means 3 Display processing means 4 Control signal calculation means 5 Control signal output means 6 ... operated end control device 7 ... plant (each operated end) 11 ... FAST / SLOW judgment means (operation rate judgment means) 12 ... operation rate switching setting storage section 13 ... FAST / SLOW determination storage unit (operation rate determination storage unit) 14 continuous operation determination unit 31 operation history storage unit 32 operation history storage unit 33 operation history display processing unit 34 monitoring curve storage unit 35 Following state determination means 36 Monitoring curve creation means 50 Operation state display means 51 Operation state storage table

Claims (9)

[Claims] 1. An input processing means for processing an operation control input from an input / output device to each operated end of a plant, and a control signal for calculating a control operation output value from the operation control input to each operated end of the plant. Calculating means, control signal output means for outputting the control operation output value to a corresponding operated end of the plant, control operation output value to each operated end of the plant from the control signal output means, and each of the plant And a display processing means for displaying a process value of the operated end on the input / output device. An operation rate for automatically changing an operation rate by determining a corresponding operation rate switching value from the operation control input. A plant provided with determination means, wherein the control signal calculation means calculates a control operation output value based on the changed operation rate. Control device. 2. The operation rate determining means according to claim 1, further comprising an operation rate switching value setting storage unit for setting and storing respective operation rate switching values corresponding to each operated end of the plant in advance. The plant control device according to claim 1. 3. An operation rate state storage unit for storing the state of the operation rate determined by the operation rate determination unit or the state of a change in the operation rate with respect to a continuous operation and displaying the state on the input / output device. The plant control device according to claim 1, wherein: 4. A continuous operation determining means for determining whether or not an operation control input to the plant from the input / output device is a continuous setting request, and automatically continuing the control when the input is a continuous setting request is provided. The plant control device according to claim 1, wherein: 5. An input processing means for processing an operation control input from the input / output device to each operated end of the plant, and a control signal for calculating a control operation output value from the operation control input to each operated end of the plant. Calculating means, control signal output means for outputting the control operation output value to a corresponding operated end of the plant, control operation output value to each operated end of the plant from the control signal output means, and each of the plant A display processing means for displaying the process value of the operated end on the input / output device; a control operation output value to each operated end of the plant from the control signal output means; An operation history storage unit for storing the operation history of the process value of the operation end in the operation history storage unit is provided, and a control operation output value and a process value are stored from the stored operation history. Plant control system according to claim the trend to the provision of the operation history display processing means for displaying on the output device. 6. An input processing means for processing an operation control input from the input / output device to each operated end of the plant, and a control signal for calculating a control operation output value from the operation control input to each operated end of the plant. Calculating means, control signal output means for outputting the control operation output value to a corresponding operated end of the plant, control operation output value to each operated end of the plant from the control signal output means, and each of the plant A display control means for displaying the process value of the operated end on the input / output device; and a monitoring curve storage means for storing in advance a standard ideal change of the process value with respect to the operation time, By comparing the process value of each operated end with the ideal change value of the process value, the deviation of the process value from the ideal change value of the process value is determined. Plant control system according to claim determining follow-up state determining means that, and provided with a follow-up state display processing means for displaying by dividing the determination result of the tracking state. 7. A process value ideal change curve stored in the monitoring curve storage means refers to a control operation output value to each operated end of the plant and an operation history of a process value of each operated end of the plant. 7. The plant control device according to claim 6, wherein the plant control device is created by a monitoring curve creating unit. 8. An input processing means for processing an operation control input from the input / output device to each operated end of the plant, and a control signal for calculating a control operation output value from the operation control input to each operated end of the plant. Calculating means, control signal output means for outputting the control operation output value to a corresponding operated end of the plant, control operation output value to each operated end of the plant from the control signal output means, and each of the plant In a plant control device using a process control device including a display processing unit that displays a process value of the operated end on the input / output device, a plurality of the input / output devices and a plurality of process control devices are provided. The operation control for each operated end of the plant can be performed, and can be commonly used by each process control device, and from each of the input / output devices. A shared storage device for storing an operation rate corresponding to the operation control input; and operation state display means for displaying an operation rate stored in the shared storage device. A plant control apparatus characterized in that an operation rate displayed on a state display means can be referred to. 9. An input processing means for processing an operation control input from the input / output device to each operated end of the plant, and a control signal for calculating a control operation output value from the operation control input to each operated end of the plant. Calculating means, control signal output means for outputting the control operation output value to a corresponding operated end of the plant, control operation output value to each operated end of the plant from the control signal output means, and each of the plant In a plant control device using a process control device including a display processing unit that displays a process value of the operated end on the input / output device, a plurality of the input / output devices and a plurality of process control devices are provided. The operation control for each operated end of the plant can be performed, and can be commonly used by each process control device, and each operated end of the plant can be controlled. A shared storage device for storing control operation output value to the end, and the operation history of the process value of each of the operating end of the plant,
Operation history display processing means for displaying an operation history stored in the shared storage device, so that the operation history displayed on the operation history display processing means can be referred to at the time of operation control input by each of the input / output devices. A plant control device, characterized in that: