JP2021005263A - Device management device and method - Google Patents

Abstract

To facilitate the alignment of data formats obtained from similar devices of different types.SOLUTION: A data name storage unit 101 stores a relation between a first data name and a second data name for each identification information that identifies a field device 125. The first data name identifies data output from the field device 125. The second data name identifies data set in process control in which the field device 125 is used. The data name storage unit 101 stores each relation between the plurality of first data names and the plurality of second data names for each identification information. A change unit 103 changes the first data name of collection data collected by a collection unit 102 to the corresponding second data name by referring to the data name storage unit 101 with the identification information collected by the collection unit 102.SELECTED DRAWING: Figure 1

Description

The present invention relates to equipment management devices and methods.

Generally, in a plant or the like, the operation status of the plant is monitored by an equipment management device. The device management device inputs signals from field devices such as process devices and various sensors installed in the field connected by a network called a field bus, performs predetermined calculations, and sends the resulting signal to the process devices. It outputs and controls the process (see Patent Documents 1 and 2). The operator who monitors and operates the process controlled by the device management device monitors the control status displayed on the display unit of the device management device and inputs the necessary instructions to the device management device to perform the process. I try to operate it in a stable state. Various information necessary for fieldbus equipment management such as process management is displayed on the display unit of the equipment management device.

As mentioned above, the fieldbus to which the field equipment placed in the field for process control is connected is set as "Foundation fieldbus" by the Fieldbus Foundation TM, which was established in 1994. It is standardized. Among them, the Fieldbus Association distributes industrial unit dictionary files (standard.dct) and interpretation software (DDS) for interpreting device descriptions (DD) related to field equipment, and instruments from different manufacturers. It is possible to build a multi-vendor environment that combines.

Japanese Unexamined Patent Publication No. 2014-096099 Japanese Unexamined Patent Publication No. 2014-134918

In the above-mentioned equipment management, for example, in order to utilize the data of field equipment operating in the plant to improve safety and optimize maintenance and inspection, not only data is collected and accumulated, but also data is accumulated. It is important to analyze the collected data and judge whether each device is operating normally. However, even for the same type of equipment, if the type is different, such as from different manufacturers, the format of the collected data may differ. In this way, when the collected formats are different, the collected data formats are aligned before analysis. However, the amount of data collected is enormous, and it is very troublesome and not easy to arrange the formats of the collected data.

The present invention has been made to solve the above problems, and an object of the present invention is to make it easy to align the formats of data acquired from devices of the same type having different types.

The device management device according to the present invention is a device management device that manages field devices connected via a network, and a first data name for identifying data output from the field devices and a field device are used. The data name storage unit configured to store the relationship with the second data name that identifies the data set by the process control for each identification information that identifies the field device, and the data and identification information from the field device. The first data name of the collection unit configured to collect and the collected data collected by the collection unit is changed to the corresponding second data name by referring to the data name storage unit with the identification information collected by the collection unit. It is provided with a change part configured as described above.

In one configuration example of the device management device, the data name storage unit stores each relationship between the plurality of first data names and the plurality of second data names for each identification information.

In one configuration example of the device management device, a conversion formula for converting the format of data output from the field device to the format used in the process control in which the field device is used is stored for each identification information. Further, the conversion type storage unit and the conversion unit configured to refer to the conversion type storage unit with the identification information collected by the collection unit and convert the format of the collected data collected by the collection unit with the corresponding conversion type. Be prepared.

The device management method according to the present invention is a device management method for managing field devices connected via a network, and a first data name for identifying data output from the field device and a field device are used. The first step of storing the relationship with the second data name for identifying data set in the process control in the data name storage unit for each identification information that identifies the field device, and the data and identification information from the field device The first data name of the second step to be collected and the collected data collected in the second step is changed to the corresponding second data name by referring to the data name storage unit with the identification information collected in the second step. A third step is provided.

In one configuration example of the device management method, in the first step, the relationship between the plurality of first data names and the plurality of second data names is stored in the data name storage unit for each identification information.

In one configuration example of the above device management method, a conversion formula for converting the format of data output from the field device to the format used for process control in which the field device is used is stored in the conversion formula storage unit for each identification information. The fourth step of performing and the fifth step of converting the format of the collected data collected in the second step by referring to the conversion formula storage unit with the identification information collected in the second step and using the corresponding conversion formula. Be prepared.

As described above, according to the present invention, the type is provided because the data name storage unit for storing the relationship between the first data name and the second data name for each identification information that identifies the field device is provided. The formats of data obtained from different and similar devices can be easily aligned.

FIG. 1 is a configuration diagram showing a configuration of a device management device 100 according to a first embodiment of the present invention. FIG. 2 is a flowchart for explaining the device management method according to the first embodiment of the present invention. FIG. 3 is a configuration diagram showing the configuration of the device management device 100a according to the second embodiment of the present invention. FIG. 4 is a flowchart for explaining the device management method according to the second embodiment of the present invention. FIG. 5 is a configuration diagram showing a hardware configuration of the device management device according to the embodiment of the present invention.

Hereinafter, the device management device according to the embodiment of the present invention will be described.

[Embodiment 1]
First, the device management device 100 according to the first embodiment of the present invention will be described with reference to FIG. The device management device 100 includes a data name storage unit 101, a collection unit 102, a change unit 103, and a collection data storage unit 104. A controller 122 is connected to the device management device 100, and an I / O module 123 is connected to the controller 122. A plurality of controllers 122 are provided for each block to be controlled. Further, the I / O module 123 is connected to each of the plurality of controllers 122 provided for each block.

Further, a plurality of field devices 125 are connected to the I / O module 123. A controller 122 is connected to the device management device 100 via a network 121, and a plurality of field devices 125 are connected to each I / O module 123 by a signal line 124. For example, HART (Highway Addressable Remote Transducer; registered trademark) communication is used to communicate between the above-mentioned devices. The device management device 100 manages the field device 125 connected via the network 121. The field device 125 is, for example, a valve positioner.

The data name storage unit 101 stores the relationship between the first data name and the second data name for each identification information that identifies the field device 125. The first data name identifies the data output from the field device 125. The second data name identifies the data set in the process control in which the field device 125 is used. The data name storage unit 101 stores each relationship between the plurality of first data names and the plurality of second data names for each identification information. Table 1 shows examples of the identification information, the first data name, and the second data name stored in the data name storage unit 101.

In Table 1, the "device name" is the identification information. In Table 1, "Positioner A", "Positioner B", and "Positioner C" are exemplified as device names.

Further, in Table 1, for example, as the first data name output from the field device 125 whose device name is "Positioner A", "actual opening degree", "temperature", "EPM drive signal", and "input current" are used. , Illustrated.

Further, as the first data name output from the field device 125 whose device name is "positioner B", "input current", "temperature", "EPM drive signal", and "actual opening degree" are exemplified.

Further, as the first data name output from the field device 125 whose device name is "Positioner C", "input current", "position", "EPM drive signal", and "output air pressure" are exemplified.

The "input current" has a unit of mA and is a current signal value that specifies the flow rate of the valve. The "EPM drive signal" is a conversion coefficient when converting a current signal into an air signal that moves a valve. “Actual opening” indicates the opening (%) of the valve. The "position" is a value indicating the flow rate flowing through the valve, and indicates the actual opening degree multiplied by the reverse conversion of the flow rate characteristics. "Output air pressure" indicates the output air pressure (kPa) output by the positioner to move the valve.

Further, in Table 1, "PV", "SV", "TV", and "QV" are exemplified as the second data name. PV: Primary variable, SV: Secondary variable, TV: Tertiary variable, QV: Quantemary variable.

For example, in the HART communication standard, a HART command is prepared to collect parameters such as input current, temperature, and pressure of a field device (device). Each device provider assigns parameters to this HART command with different names. On the other hand, for example, the HART command 3 has HART4 variables of "PV", "SV", "TV", and "QV". The HART4 variables do not differ by device provider or type.

The collecting unit 102 collects data and identification information from the field device 125. The changing unit 103 changes the first data name of the collected data collected by the collecting unit 102 to the corresponding second data name by referring to the data name storage unit 101 with the identification information collected by the collecting unit 102. For example, when the collecting unit 102 collects the "actual opening degree" together with the device name "positioner A", the changing unit 103 has the device name "positioner A" and is stored in the data name storage unit 101. Is referred to and the "actual opening" is converted to the corresponding "PV". The change unit 103 stores (stores) the data changed to the second data name in the collected data storage unit 104.

Next, the operation of the device management device (device management method) according to the first embodiment will be described with reference to FIG.

First, in the first step S101, the first data name for identifying the data output from the field device 125, which is set by the field device 125 of the field device 125, and the process control in which the field device 125 is used are set. The relationship with the second data name that identifies the data is stored in the data name storage unit 101 for each identification information that identifies the field device 125. Here, the relationship between the plurality of first data names and the plurality of second data names is stored in the data name storage unit 101 for each identification information.

Next, in the second step S102, the collecting unit 102 collects data and identification information from the field device 125. Next, in the third step S103, the changing unit 103 refers to the data name storage unit 101 with the collected identification information, and changes the first data name of the collected collected data to the corresponding second data name. .. After that, in step S104, the changing unit 103 stores (stores) the data changed to the second data name in the collected data storage unit 104.

As described above, according to the first embodiment described above, the data stored in the collected data storage unit 104 is data acquired from the same type of device even if the identification information (device type) is different. The format of is complete.

[Embodiment 2]
Next, the device management device 100a according to the second embodiment of the present invention will be described with reference to FIG. The device management device 100a includes a data name storage unit 101, a collection unit 102, a change unit 103, and a collection data storage unit 104. Further, the controller 122 is connected to the device management device 100a, the I / O module 123 is connected to the controller 122, and the field device 125 is connected to the I / O module 123. A controller 122 is connected to the device management device 100a via a network 121, and a plurality of field devices 125 are connected to each I / O module 123 by a signal line 124. These are the same as those in the first embodiment described above.

The device management device 100a further includes a conversion type storage unit 105 and a conversion unit 106. The conversion formula storage unit 105 stores the conversion formula for converting the format of the data output from the field device 125 into the format used in the process control in which the field device 125 is used for each identification information that identifies the field device 125. .. The conversion formula converts, for example, the current value or voltage value collected by the collecting unit 102 into any of temperature, flow rate, humidity, light intensity, brightness, and bulb opening. Further, the conversion formula converts the data obtained from the field device 125 according to the flow rate characteristics of the field device 125, which is a valve positioner, for example.

The conversion unit 106 converts the format of the collected data collected by the collection unit 102 by referring to the conversion formula storage unit 105 with the identification information collected by the collection unit 102 and using the corresponding conversion formula.

Next, the operation of the device management device (device management method) according to the second embodiment will be described with reference to FIG.

First, in the fourth step S105, a conversion formula for converting the format of the data output from the field device 125 into the format used in the process control in which the field device 125 is used is performed for each identification information that identifies the field device 125. It is stored in the conversion type storage unit 105. Next, in the second step S102, the collecting unit 102 collects data and identification information from the field device 125. Next, in the fifth step S106, the conversion formula storage unit 105 is referred to by the collected identification information, and the format of the collected collected data is converted by the corresponding conversion formula. After that, in step S107, the conversion unit 106 stores (stores) the converted data in the collected data storage unit 104.

As described above, according to the second embodiment described above, the data stored in the collected data storage unit 104 is data acquired from the same type of device even if the identification information (device type) is different. The format and characteristics of are complete.

As shown in FIG. 5, the device management device according to the above-described embodiment includes a CPU (Central Processing Unit) 301, a main storage device 302, an external storage device 303, a network connection device 304, and the like. It is also possible to realize each of the above-mentioned functions (device management method) by operating the CPU 301 (execution of the program) by the program deployed in the main storage device as the provided computer device. The above program is a program for a computer to execute the device management method shown in the above-described embodiment. The network connection device 304 connects to the network 305. In addition, each function can be distributed to a plurality of computer devices.

Further, the device management device in the above-described embodiment can also be configured by a programmable logic device (PLD: Programmable Logic Device) such as an FPGA (field-programmable gate array). For example, by providing each of the data name storage unit, the conversion type storage unit, the collection unit, the change unit, and the conversion unit as a circuit in the logic element of the FPGA, it can function as a device management device. Each of the storage circuit, the collection circuit, the change circuit, and the conversion circuit can be written to the FPGA by connecting a predetermined writing device. Further, each of the above circuits written in the FPGA can be confirmed by a writing device connected to the FPGA.

As described above, according to the present invention, the data name storage unit for storing the relationship between the first data name and the second data name for each identification information that identifies the field device is provided. The formats of data acquired from the same type of equipment with different values will be easily aligned.

The present invention is not limited to the embodiments described above, and many modifications and combinations can be carried out by a person having ordinary knowledge in the art within the technical idea of the present invention. That is clear.

100 ... Equipment management device, 101 ... Data name storage unit, 102 ... Collection unit, 103 ... Change unit, 104 ... Collected data storage unit, 121 ... Network, 122 ... Controller, 123 ... I / O module, 124 ... Signal line, 125 ... Field equipment.

Claims (6)

In a device management device that manages field devices connected via a network
The field device is identified by the relationship between the first data name that identifies the data output from the field device and the second data name that identifies the data set by the process control in which the field device is used. A data name storage unit configured to store each identification information,
A collection unit configured to collect data and the identification information from the field device,
A change unit configured to refer to the data name storage unit with the identification information collected by the collection unit and change the first data name of the collected data collected by the collection unit to the corresponding second data name. Equipment management device equipped with. In the device management device according to claim 1,
The data name storage unit is a device management device that stores each relationship between a plurality of the first data names and a plurality of the second data names for each identification information. In the device management device according to claim 1 or 2.
A conversion formula storage unit configured to store a conversion formula for converting the format of data output from the field device into a format used in process control in which the field device is used for each identification information.
The format of the collected data collected by the collecting unit is further provided with a conversion unit configured to refer to the conversion formula storage unit with the identification information collected by the collecting unit and convert it by the corresponding conversion formula. A device management device characterized by. In the device management method that manages field devices connected via a network,
The field device is identified by the relationship between the first data name that identifies the data output from the field device and the second data name that identifies the data set by the process control in which the field device is used. The first step of storing each identification information in the data name storage unit,
The second step of collecting data and the identification information from the field device,
The first data name of the collected data collected in the second step is changed to the corresponding second data name by referring to the data name storage unit with the identification information collected in the second step. A device management method that includes steps. In the device management method according to claim 4,
The device management is characterized in that the first step stores the relationships between the plurality of first data names and the plurality of second data names in the data name storage unit for each identification information. Method. In the device management method according to claim 4 or 5,
The fourth step of storing the conversion formula for converting the format of the data output from the field device into the format used in the process control in which the field device is used in the conversion formula storage unit for each identification information.
The format of the collected data collected in the second step is further provided with a fifth step of referencing the conversion formula storage unit with the identification information collected in the second step and converting with the corresponding conversion formula. A device management method characterized by.

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