JPH07219973A - Control device with data collecting function - Google Patents

Abstract

PURPOSE:To collect required data in a system only by applying a data collecting condition to a control device to be used in water supply/sewage treatment facilities or an industrial plant system in accordance with the generation of necessity without stopping the operation of the control device. CONSTITUTION:A data collecting part 8 consists of a control and arithmetic means 80, a storage means 81 and a 2nd operation display part 51. A data collecting condition is inputted from the display part 51 and stored in a 1st collecting condition area 8c of the means 81, data are collected in accordance with the data collecting condition, the collected data are stored in a 1st data area 8d, and after ending the data collection, data stored in a 1st data area 8d are displayed on the display part 51. A reference program 8b and a collection program 8p to be executed by the means 80 are stored in the means 81.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device used for controlling and managing, for example, a facility for treating water and sewage or a plant in the equipment industry, which has a lot of input and output information.

[0002]

2. Description of the Related Art Since a system having a large number of input points and operation terminals has a large amount of information and a wide variety of processing contents, smooth control and management are difficult unless a control device centered on a computer is used. . In order to ensure the safe and reliable operation of these systems, it is of course necessary to realize the functions intended by the system, but also design and test in advance taking into consideration various input conditions and operating conditions other than the normal ones. To do. However, it can be said that it is impossible to test and confirm all combinations of these inputs and control requests. So in practice,
When a defect is found during testing or operation, the cause of the problem is determined and the method for solving the problem is also used.

[0003] When a defect is found, in order to investigate the cause, data such as an input, an intermediate processing result, a program execution process, or the like which is likely to be related to the defect is collected at the location where the defect is found. , It is necessary to display these data on the display of the control device in a human-readable form. As an example, a control system of a wide area sewerage treatment facility will be described. FIG. 6 shows a model of a wide area sewerage treatment facility. Water from the water channel 100 first flows into the sand basin 101, where solid matters such as sand having a large specific gravity are precipitated and removed. Water in sand basin 101 is an electric motor
A pump 200 driven by 201 is pumped to a distribution reservoir 102. The water in the distribution pond 102 is divided into a plurality of rows of treatment tanks with three treatment stages. In the process of flowing through these treatment tanks, mud is removed and organic substances are decomposed by the action of bacteria, etc. It is purified to the extent that it can be discharged to the river, and then discharged to the river via the catchment reservoir 104 and the discharge channel 105. Such a wide area sewerage treatment facility is controlled as follows. Measure the flow rate of the water channel 100 including rainwater that changes from moment to moment and the water level of the sand basin 101, determine the number of pumps 200 to operate according to the inflow rate, and make the burden on each pump even. Allocate the driving time and drive. The pump 200 and the motor 201 that drives the pump 200 are managed by measuring the current value, power consumption, and operating time. The flow condition of water is measured by a water level meter and a flow meter, and the cleanliness of water is measured by a water content measuring instrument.
When the mud of 3 reaches the allowable limit, the mud is pumped up by the facility of station 202 and transported to the mud treatment facility.

Since there are many measuring points, pumps, electric motors, stations, etc. that need to be managed and controlled, the measurement results are processed, displayed, and the pumps and electric motors are controlled. It is performed by a control device having a calculation function provided in the. In a facility like this,
Prior testing in all cases is not possible, so
As described above, it is necessary to collect data at the time of occurrence of a failure, data of a portion estimated to be related to the failure, data for grasping the time of occurrence of the failure, and the like.

A method of collecting data in the conventional control device will be described below with reference to FIG. The figure shows a part of the system of the above-mentioned wide area sewage treatment plant centering on the control device, and the lines with arrows indicate the signals to be transmitted and the directions of the signals. In the figure, 1 is a control device, 91 is a push-button switch for inputting an opening / closing operation input by a person to the control device 1 through a signal converter 91d, and 92 is a flow rate converter for detecting a flow rate and representing a flow rate After converting the numerical value into a digital value, it is input to the control device 1 via the signal converter 92d, and 93 is a water level limit switch that opens when the water level is below the set water level and closes when the water level is above the set water level. It is input to the control device 1 via the signal converter 93d. Reference numeral 94 denotes a start / stop signal output from the control device 1 via the signal converter 92d, and an electric motor to start / stop according to this signal, 95 denotes an open / close signal output from the control device 1 via the signal converter 92d. A solenoid valve that opens and closes according to this signal. The push buttons / switches 91, the flow rate converter 92, etc. are shown as representative peripheral devices for inputting external information, and the electric motor 94, the solenoid valve 95, etc. are shown as representative peripheral devices operated by the control device 1. However, there are many peripheral devices in this system. Reference numeral 7 is an external signal bus including a data signal, an address signal and a control signal for transmitting information between the control device 1 and the peripheral equipment. The controller 1 and the above-mentioned peripheral devices and signal bus lines constitute the entire system.

The control device 1 comprises a control calculation unit 2, a transmission control unit 3, an external storage unit 4, an operation display unit 5 as a first operation display unit, and an internal signal bus bar 6. The control calculation unit 2 executes a program to process and control data related to the system, and a first control calculation unit 20 and a first storage unit 21.
And an input / output circuit 22 for relaying a signal between the arithmetic control unit 2 and the internal signal bus 6, and an input / output circuit 23 for relaying a signal between the arithmetic control unit 2 and the operation control unit 5. A program for controlling input / output of signals between the control calculation unit 20 and the operation display unit 5 and data stored in the first storage unit 21 and the control calculation unit 20 are stored in the first storage unit 21. A basic program 2b including a program to be displayed and a main program 2m for controlling this system are stored, a spare program area 2r in which any other program can be stored, data necessary for executing the program, and this system And a data area 2d for storing data related to.

The transmission control unit 3 is a device that relays information between the above-mentioned peripheral equipment and the control calculation unit 2 via an internal signal bus and an external signal bus, and transmits the control signal from the control calculation unit and the outside. It has a storage unit 3d for temporarily storing data to be output. The external storage unit 4 is a device that can arbitrarily store programs, data, and the like, and the storage content is read and written in block units under the control of the control calculation unit 1 and is a storage unit for temporarily storing data indicating the state of the device. With 4d. The operation display unit 5 is an apparatus including an input device such as a keyboard for giving a control signal from a person to the control device itself or the system, and a display for notifying a person of information held by the control device itself or the system. Internal signal bus 6
Is, as shown in FIG. 5, the data from the address bus 62 that carries the address signal indicating the location of the data, and the address indicated by the signal on the address bus 62, or the address indicated by the signal on the address bus 62. A data bus 61 on which data to be output is placed, and a control bus 63 such as a timing signal line for giving a time point of data input or output and an interrupt signal line to a control calculation means.

The operation of the control device 1 is performed as follows.
When a person gives a necessary condition through the operation display unit 5 to activate the control operation unit 2, the control operation unit 20 stores the storage unit.
The basic program 2b stored in 21 is read and this program is executed, and if a program satisfying the conditions given through the operation display unit 5 is in the storage means 21, this program is read and executed. If not, external storage unit 4
Is executed and the necessary program is transferred from the external storage unit 4 to the storage means 21, and then this program is executed. In a steady operation, these series of programs periodically input the states of the peripheral devices of the control device 1, such as the push button switch 91 and the flow rate converter 92, according to the input information and these information. An operation signal is output to a peripheral operation device such as an electric motor 94 or a solenoid valve 95 according to a predetermined program.

For example, when the push button switch 91 is pressed to start the electric motor 94, the push button switch 91 is closed, and this closing signal is input to the transmission control unit 3 via the external signal bus 7. When the transmission control unit 3 detects this signal, the transmission control unit 3 converts it into a signal format suitable for the internal signal bus 6 and temporarily stores it in the storage unit 3d. Similarly, other input information (not shown) connected to the external signal bus 7 is
Memorized in buffer 3d. When the series of inputs is completed, the transmission controller 3 sends a signal indicating the completion of the input of the external signal. When this signal is received by the control calculation unit 2, the control calculation unit 2 executes a program that reads information in the storage unit 3d in the transmission control unit and temporarily stores this information in the storage unit 2d. Refer to other data which is
When the logical conclusion to start 94 is reached, a signal indicating the start of the electric motor 94 is stored in the storage unit 2d. Other output signals are also stored in the storage unit 2d after processing, and then the stored contents are transferred to the storage unit 3d of the transmission control unit 3. When the transmission control unit 3 completes the transfer of these signals from the control calculation unit 1,
The output data stored in the storage unit 3d is output to the peripheral device via the external bus 7. From these signals, the electric motor 94 selects and receives a start signal for the electric motor 94 to start it. These series of operations are performed by the main program 2m stored in the storage unit 22 of the control calculation unit 2.

However, it is assumed that there is an abnormal operation such that the electric motor 94 is started or not started even if the push button switch 91 is pressed. In such a case, it is likely to be related to it, for example, because it is near the upper limit of the water level limit switch 93, so it may be the cause of rejecting or not operating the abnormal pump, or the transmission control unit, etc. The fastest way to discover the cause is to continuously collect data that shows the progress of the operation, such as whether it is due to an abnormality in the intermediate path, for a certain period of time, and display the results to see them.

However, it is very wasteful to anticipate and prepare a program for continuously collecting and displaying data at a specific location as in this example for a certain period of time. A program for data collection suitable for the solution is created and stored in the spare program area 2r of the storage unit 21 of the control calculation unit 2, and the data collection program is executed by time division while the system operation by the main program 2b is executed. The relevant data during the operation of the system is accumulated in the data area 2d, and this data is displayed on the operation display unit according to the signal input from the operation display unit 5.

[0012]

As described above, in the conventional control device, when a problem occurs and the cause cannot be easily understood, a data collection program for investigating the cause is created and this program is It was necessary to suspend the system test and operation, store the data in the internal storage of the control calculation unit, and then execute it to collect the data for investigating the cause of the malfunction.

According to the present invention, it is only necessary to input a required data input location to the control device through the operation display section without newly creating a data collection program and without interrupting the operation of the system. , To provide a control device whose data is collected and displayed.

[0014]

In order to achieve the above object, in the present invention, a control calculation unit having a first control calculation unit and a first storage unit, and a function by control by this control calculation unit are provided. A first operation display that communicates with the external storage unit, the transmission control unit that relays information between the control calculation unit and the outside, and the control calculation unit, inputs an operation signal, and displays information from the control calculation unit. And a second operation display unit, and the data collection unit includes a second control calculation unit and a second storage unit. The storage means stores a basic program and a collection program for collecting data, and the basic program stores a program for inputting collection conditions from the second operation display unit and storing the program in the second storage means, and a second storage. Second means of contents
And a program displayed on the operation display unit,
In the second storage means, a first collection condition area for storing collection conditions of data input from the second operation display section, and a first collection condition area collected by execution of the collection program by the second control calculation means. The data area and are secured.

Between the first operation display section and the control calculation section,
The interface between the second operation display unit and the data collection unit is the same, and has a detachable or switchable structure.
It is preferable that the first operation display section and the second operation display section have the same structure. Furthermore, an operation display unit, a third control calculation means, a third storage means, an operation display panel for inputting an operation signal and displaying information from the third control calculation means,
The third storage means includes a second data area for storing collected data, a second collection condition area for storing collection conditions for data input from the operation display board, and an operation display board. Collecting conditions are input and stored in the second collecting condition area, the collecting conditions are transferred to the data collecting section, the data from the data collecting section is stored in the second data area, and the contents of the third storing means are stored. It is preferable to provide a basic program including a program displayed on the operation display panel.

[0016]

The normal operation is performed by the first control calculation means executing the main program stored in the storage section of the control calculation section. When it becomes necessary to collect data at a specific location for a certain period of time, a signal is sent from the second operation display unit to the data collection unit so that communication can be established between the second operation display unit and the data collection unit. Then, the collection condition such as the address indicating the location of the data and the data of the time indicating the data collection period is input from the second operation display unit, and the data collection condition is stored in the second storage unit. These series of operations are performed by executing the basic program in the data collection unit.

After storing the data collection conditions, when a start signal is given to the data collection unit via the second operation display unit, the second control operation unit in the data collection unit causes the collection program in the second storage unit to be executed. By executing, necessary data is input according to the condition given by the collection condition and stored in the second storage means. The data stored in the second storage means is read out by the basic program in the data collection section in response to a signal from the second operation display section and displayed on the second operation display section.

In the second invention, the interface between the first operation display section and the control calculation section and the interface between the second operation display section and the data collection section are the same.
In addition, since the first operation display unit and the second operation display unit have the same structure as the detachable or switchable structure, the connection terminal of the first operation display unit connected to the control calculation unit is connected to the data collection unit. By switching or switching to the side, this operation display unit can be made to function as it is as the second operation display unit for the data collection unit.

Further, in the third invention, the data collection condition input to the second operation display section is first stored in the second collection condition area. Then, the second operation control unit is connected to the data collection unit, and the collection condition of the second collection condition area is set to the first collection condition.
When the program transferred to the collection condition area is executed, the data collection condition is stored in the first collection condition area. Using this data collection condition, the second control calculation means in the data collection section operates to collect data and stores the collected data in the first data area. The collected data is stored in the second data area by executing a program that transfers data from the first data area to the second data area. The collected data stored in the second data area is displayed on the operation display panel of the second operation display unit by the basic program stored in the third storage means.

[0020]

【Example】

(Embodiment 1) FIG. 1 shows an embodiment of a control device with a data collection function according to the present invention. In the figure, lines with arrows indicate signals and signal directions. In the figure, the same components as those in FIG. 4 are indicated by the same numbers and the same names.

Reference numeral 101 denotes a control device with a data collection function according to the present invention, which includes a control calculation unit 2, a transmission control unit 3, an external storage unit 4, a first operation display unit 5, an internal signal bus bar 6, and a data collection unit 8. And a second operation display section 51. The data collection unit 8 includes a second control unit 80 and a second storage unit 81.
And input / output circuits 82 and 83.

The storage means 81 stores a basic program 8b and a collection program 8p, and a storage area 8c for storing data collection conditions and a data area 8d for storing collected data are secured. . Reference numeral 51 denotes a second operation display section that communicates with the control means 80 via the input / output circuit 83, and inputs an operation signal from a person to the data collection section and displays data transmitted from the data collection section. It is a part.

The basic program 8b is a program for controlling the input / output of signals between the control calculation means 80 and the operation display section 51 and between the control calculation means 80 and the internal signal bus 6, and the input / output circuit 83. A program for storing the data from the second operation display unit 51 input via the storage unit in a predetermined storage area, for example, the collection condition area 8c, and the storage unit 81 or the control calculation unit 80.
Is a program including a program for displaying the predetermined data in, for example, the data in the data area 8d on the second operation control unit 51, and the collection program 8p is input / output according to the collection condition of the data stored in the collection condition area. Data is input via the circuit 82 and this collected data is input to the data area.
It is a program stored in 8d.

The operation of the control device 101 in the normal state is performed by the part excluding the data collection part 8 and the second operation display part 51.
This is performed as described with reference to FIG. If it doesn't work as planned. For example, push button switch 91
It is assumed that the electric motor 94 is started or not started by pressing. In such a case, as described above, the operation progress such as whether it is related to the operation, for example, the operation near the upper limit of the water level limit switch 93 or the intermediate path such as the transmission control unit The fastest way to solve the problem is to continuously collect the data shown for a certain period and display the results.

Therefore, the basic program 8b cuts off the signal passing through the input / output circuit 82, inputs the data collection condition from the first operation display unit, and stores the collection condition in the collection area 8c. The collection conditions are necessary for the operation of the data collection program 8p including the location where the data to be collected is considered to occur, for example, the data area 3d of the transmission control unit, the address of the limit switch 93, and the period when collection is required. It is a condition to be done.

When storage of the collection condition 8c in the storage means 81 is completed, the collection program 8p is activated. Collection program
8p collects data by the following two methods. One is to send an interrupt signal to the arithmetic and control unit 2 via the control bus 63 of the internal signal bus 6, suspend the function of the arithmetic and control unit 2, and control the internal signal bus 6 in the data collecting unit 8. Two
The data is transferred to the control calculation means, the data at the location designated by the data collection condition such as the data area 3d of the transmission control unit is read via the internal signal bus 6, and transferred to the data area 8d. Alternatively, as a second method, the data collection unit monitors the signal appearing on the internal signal bus 6 while the control operation unit 2 continues the operation of the system. Internal signal bus 6
At the time when the location address of the data to be collected appears and the read timing signal generated by the first control calculation unit appears, the data to be collected is the data bus 61 of the internal signal bus 6.
Therefore, the data on the data bus 61 is read and stored in the data 8d using this condition.

After the collection period given as the data collection condition has elapsed, or upon receiving a signal from the second operation display section 51, the data collection section 8 shifts the execution of the program from the collection program 8p to the basic program 8b, Basic program 8b
After interrupting the signal passing through the input / output circuit 82,
The collected data in the data area 8d is displayed on the second operation control unit 51. (Embodiment 2) FIG. 2 shows the essential part of another embodiment of the control device with a data collecting function according to the present invention. Parts not shown in the figure are the same as those in FIG. The operation control unit 2 and the internal signal bus 6 are the same as those described in FIG.

The second operation display section is the same as the first operation display section 5, and the data collection section 8a is equivalent to the input / output circuit section 23 of the control calculation section 2 in the input / output circuit with the second operation display section 5. The input / output circuit section 23 of the structure is used. Regarding the input / output control of the basic program 8b, the control target is changed to one that can be controlled by the input / output circuit 23. The other parts of the data collection unit 8a are
It is the same as the data collection unit 8. A signal transmission path portion between the first operation display unit 5 and the control calculation unit 2 and between the second operation display unit 5 and the data collection unit 8 is connected to the input / output circuit unit 23 by a removable terminal Tc. Has been done.

With such a structure, the same operation display unit 5
Functions as a first operation display unit when mounted on the side of the control calculation unit 2, and functions as a second operation display unit when mounted on the data collection unit 8a. The circuit 23 and the operation display unit 5 and the input / output circuit 23 of the data collecting unit are connected by a changeover switch or a changeover circuit instead of the removable terminal Tc, and communication with the control calculation unit 2 is required. When it is necessary to switch to the control calculation unit 2 side and communication with the data collection unit 81 is required, the data collection unit 81
It can also be used by switching to the side. (Embodiment 3) FIG. 3 shows still another embodiment of the control device with a data collecting function according to the present invention. In the figure, the control calculation unit 2, the transmission control unit 3, the external storage unit 4, the internal signal bus 6, the external signal bus 7, and the data collection unit 8 are the same as those described with reference to FIG.

The second operation display section 5a is connected to the control calculation means 50 as the third control calculation means, the third storage means 5m, and the data collection section 8 via a removable connection terminal. Circuit section 52 and control operation means that accepts operation inputs from people
And an operation display panel 55 for displaying data from 50.
The storage means 5m stores the program described in the first embodiment.
A program 5b having the same function as 8b is stored, and an area 5c for storing data collection conditions and a data area 5d are secured.

When it becomes necessary to collect data, the data is collected as follows. First, the basic program 5b stored in the operation display unit 5a cuts off the communication via the input / output circuit 52 connected to the data display unit 8, inputs the data collection condition from the operation display panel, and stores the data in the storage unit 5m. Store in the collection condition area. After storing these collection conditions, the basic program 8b in the data collecting section 8 and the basic program 5b in the operation display section enable communication between the input / output circuit 52 and the input / output circuit 83 of the data collecting section 8 and store it. The collecting condition in the means 5m is transferred to the data collecting condition storage area 8c of the data collecting unit via the third control calculating means 50, the input / output circuit 52, the input / output circuit 83, and the control calculating means 80. . The operation after the transfer of the collection condition is the same as that described in the first embodiment. After the data collection is completed, the data is transferred from the data area 8d of the data collection unit 8 to the second operation display unit 5a, and the transferred data is displayed by the basic program 5p in the second operation display unit 5a.

[0032]

According to the data collection method of the control device according to the first aspect of the present invention, when it is necessary to collect data of a specific portion of the system for a predetermined period, the second control calculation means and the second control calculation means are provided. The data is collected by using the data collecting unit composed of the storage means. First, the communication between the data collection unit and the internal signal bus is cut off, and then the address indicating the data collection location from the operation display unit, the data collection condition indicating the data collection period, etc. is displayed in the collection condition area in the data collection unit. To store. After that, the data collection unit restores communication with the internal signal bus and monitors the internal signal bus according to the data collection condition, thereby taking in this data when necessary data is on the bus. In this case, it has no effect on the operation of the system. Alternatively, an interrupt signal is sent to the control calculation unit, the control calculation unit is temporarily stopped, and during that time, data stored in the storage means such as the transmission control unit and the control calculation is read. In this case as well, since the temporary stop time of the control calculation unit is extremely short, it is possible to prevent the operation of the system from being affected.

Therefore, according to the present invention, a program for data collection is created every time when it is necessary to collect data for a specific place or a specific period, which is conventionally required, or the program created by stopping the system is controlled. There is provided a control device that saves the trouble of storing it in a calculation unit and can perform a procedure related to data collection while the system is in an operating state.

According to the second aspect of the invention, since the operation display section is constructed so as to be connectable to both the control calculation section and the data collection section, even if the data collection section is added to the system,
It is possible to provide a control device that does not need to prepare an operation display unit dedicated to the data collection unit. According to the third invention, since the operation display unit has the third control calculation unit and the third storage unit, the data collection condition is first created in the operation display unit with the operation display unit separated from the system. Then, the operation display unit is connected to the data collecting unit when the data collecting condition is stored in the third storing unit, and the data collecting condition is transferred from the third storing unit to the second storing unit in the data collecting unit. And collect data. Therefore, it is possible to separate the operation display unit from the system and perform the work that requires the most thought, such as creating collection conditions, in a place where it is easy to work, and also connect it to another simulated system for testing. A device can be provided.

[Brief description of drawings]

FIG. 1 is a basic configuration diagram of a first embodiment of a control device with a data collection function according to the present invention.

FIG. 2 is a main part diagram of a second embodiment of a control device with a data collection function according to the present invention.

FIG. 3 is a basic configuration diagram of a third embodiment of a control device with a data collection function according to the present invention.

FIG. 4 is an explanatory diagram of data collection in a conventional control device.

FIG. 5 is a detailed explanatory diagram of an internal signal bus bar.

FIG. 6 is an explanatory diagram of an application example of a control device according to the present invention.

[Explanation of symbols]

 1, 101, 102, 103 Control device 2 Control calculation unit 3 Transmission control unit 4 External storage unit 5, 51, 5a Operation display unit 6 Internal signal bus bar 7 External signal bus bar 8, 8a Data collection unit 20 First control calculation unit 80 Second Control calculation means 50 Third control calculation means 21 First storage calculation means 81 Second storage calculation means 5m Third storage calculation means

Claims (3)

[Claims] 1. A control calculation unit having a first control calculation unit and a first storage unit, an external storage unit functioning under the control of this control calculation unit, and relay of information between the control calculation unit and the outside. Communicating with the transmission control unit for performing the
A control device having a first operation display unit for inputting an operation signal and displaying information from the control calculation unit, comprising a data collection unit and a second operation display unit, wherein the data collection unit comprises: It has a 2nd control calculation means and a 2nd storage means, The said 2nd storage means has a basic program and the collection program which collects data, The said basic program is the said 2nd operation. A program for inputting collection conditions from a display unit and storing the same in the second storage unit; and a program for displaying the contents of the second storage unit on the second operation display unit,
The second storage means includes a first collection condition area that stores a collection condition of data input from the second operation display unit, and the collection program by the second control calculation means. And a first data area for storing data collected by execution of the control method with a data collection function. 2. The control device according to claim 1, wherein
The interface between the operation display unit and the control calculation unit and the interface between the second operation display unit and the data collection unit are the same, and the structure is detachable or switchable, and the first operation display unit and the second operation display unit are provided. A control device with a data collection function, which has the same structure. 3. The control device according to claim 1, wherein the second operation display section receives the third control calculation means, the third storage means, the operation signal, and the third operation display section. An operation display panel that displays information from the control calculation means, and a second data area that stores collected data in the third storage means, and a data input from the operation display board. A second collection condition area for storing collection conditions and a collection condition input from the operation display panel and stored in the second collection condition area, the collection conditions are transferred to a data collection unit, Storing data in the second data area,
A basic program including a program for displaying the contents of the third storage means on the operation display panel, and a control device with a data collection function.