JP2013228870A - Plant remote monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plant remote monitoring device which can be used without limitation to a portable terminal having a specific environment.SOLUTION: A PlantPAD 100 includes: a host computer 6 for performing processing to a signal from a job site instrument group or a job site operation terminal group in a plant; a monitoring server 7 having a processing part for inputting data processed by the host computer 6, and for performing processing on character information in the input data by using HTML, for performing processing on graphic information in the input data by using SVG, and for performing processing on a processing procedure and dynamic processing in the character information and the graphic information by using Javascript (registered trade mark); and a display. The PlantPAD 100 includes portable terminals 1a, 1b and 1c for receiving the data processed by using the HTML, SVG or Javascript via the Internet from the monitoring server 7, and for displaying the received data on the display.

Description

  The present invention relates to a remote monitoring apparatus in plant operation or the like.

  2. Description of the Related Art Conventionally, an apparatus for remotely monitoring and operating a plant operation or the like is known (see, for example, Patent Document 1). In the plant operation monitoring operation device disclosed in Patent Document 1, operation ends of a boiler control device, a turbine control device, and the like are connected to a host computer and a monitoring operation adjustment server via a network, and the monitoring operation adjustment server and the portable terminal are remotely connected. By being connected to a wireless network via an access server (RAS) and a PHS wireless line, it is possible to perform a remote monitoring operation from the portable terminal to the operation end. Here, it is essential that the mobile terminal is compatible with a JAVA (registered trademark) virtual machine, and the mobile terminal performs processing by the JAVA virtual machine.

Japanese Patent No. 3986145

  In the plant operation monitoring operation device disclosed in Patent Document 1, the available portable terminals are limited to only portable terminals compatible with the JAVA virtual machine, and the plant concerned is not used with a portable terminal that does not have such an environment. The operation monitoring operation device cannot be used. That is, there is a problem that the convenience of the plant operation monitoring operation device is low because the plant operation monitoring operation device can be used only by using a portable terminal having a specific environment.

  Therefore, the present invention has been made in view of the above, and an object thereof is to provide a plant remote monitoring apparatus that can be used without being limited to a portable terminal having a specific environment.

  In order to solve the above problems, a plant remote monitoring apparatus according to the present invention includes a host computer that processes a signal from a field measuring instrument group or a field operation terminal group in a plant, and the data processed by the host computer. The character information in the input data is processed using HTML (Hyper Text Markup Language), and the graphic information in the input data is SVG (Scalable Vector Graphics). A monitoring server having processing means for processing using Javascript for processing procedures and dynamic processing in the character information and graphic information, and a display, the monitoring server According to the HTML, SVG, or The processed data using the Javascript received via the Internet, comprising: a mobile terminal displaying the received data via the display, the.

  According to such a plant remote monitoring apparatus of the present invention, the monitoring server processes the input data from the host computer using HTML, SVG, Javascript, and the portable terminal displays the processed data. That is, the portable terminal satisfies the conditions for becoming a component of the plant remote monitoring device of the present invention as long as it supports HTML, SVG, and Javascript. In addition, HTML, SVG, and Javascript are extremely ordinary functions that are available in recent mobile terminals. Therefore, in the present invention, it is necessary that the portable terminal has a specific environment such as a JAVA virtual machine by processing data and transferring data using the three ordinary functions of HTML, SVG, and Javascript. For example, on Windows (registered trademark) and Apple (registered trademark) notebook PCs, iPad (registered trademark) tablets, iPhone (registered trademark) and Android (registered trademark) smartphones, etc. Even if it exists, the plant remote monitoring apparatus of this invention can be utilized. Therefore, the convenience of the portable terminal for using the plant remote monitoring apparatus of the present invention is enhanced.

  Moreover, according to the present invention, it is possible to monitor the state of the plant from a remote location in real time. Therefore, the plant status can be monitored in real time from a remote location even if a plant operation expert is not on site. For this reason, until now, skilled workers have traveled to the local area to give guidance, but it is possible to give advice from a remote location, and even non-skilled personnel can receive on-site operation with the advice of skilled workers It becomes. That is, the skilled person can support a plurality of sites without being tied to the place. Especially when constructing a plant overseas, since the skill level of the operator is low, long-term operation guidance was necessary so far, but by using the plant remote monitoring device of the present invention, operation guidance can be obtained from a remote location. This makes it possible to shorten the dispatch period.

  In the present invention, high-speed image processing can be performed by using SVG. Furthermore, in the plant field, which is the field of the present invention, the background that occupies most of the display screen is fixed, and the elements are often only changed frequently, that is, the contents that change. Are often limited, and particularly in such cases, high-speed image processing can be performed by using SVG. Also, by using HTML, it is possible to perform processing stably and conveniently for character information that is less changed than graphic information. Furthermore, by using Javascript, it is possible to perform processing stably and conveniently for processing procedures and dynamic processing in character information and graphic information.

  In the present invention, data exchange between the monitoring server and the portable terminal is performed via the Internet. Therefore, it takes a short time to exchange data. This is particularly important in the plant field, which is the field of the present invention. This is because in the field of plant control, it is particularly important to monitor the control state in real time by grasping on-site information, and it is necessary to update the screen in a high-speed cycle. On the other hand, in the invention described in Patent Document 1, the monitoring operation adjustment server and the portable terminal exchange data via the remote access server (RAS), and it takes a long time to exchange data. .

  In the present invention, the portable terminal further includes a comparison unit that compares data currently displayed on the display with data transmitted by the monitoring server, and the display is different depending on the comparison unit. Only data determined to be present may be updated and displayed.

  According to the present invention, the portable terminal is provided with the comparing means, and as a result of the data comparison, the portable terminal updates and displays only the data that is different. Thereby, the time required for data update and display and the number of update data can be minimized, so that the screen can be updated in a high-speed cycle. This is particularly important in the plant field, which is the field of the present invention, where it is necessary to grasp real-time information and monitor the control state in real time. Further, in the plant field, which is the field of the present invention, the background that occupies most of the display screen is fixed, and the elements are often only changed frequently, that is, changing contents. In many cases, the above-mentioned effect by performing data comparison is large. Furthermore, in the present invention, the use of SVG makes it easier to compare data than when screen data is composed of bitmaps, for example, so that the above-described effect by performing data comparison is maximized.

  In the present invention, in the update, the update may be performed by setting an update cycle of data processed using the HTML slower than an update cycle of data processed using the SVG.

  According to the present invention, data update is performed such that the update cycle of data processed using HTML is slower than the update cycle of data processed using SVG. In the present invention, character information is processed using HTML and graphic information is processed using SVG. On the display screen in the plant field, there is little change in character information, but changes in graphic information are frequent. Since there is a tendency, the load for data update can be reduced by setting the update cycle as described above. Therefore, the time required for data update and display becomes shorter, and it becomes easier to grasp the field information in real time and monitor the control state, and to update the screen in a high-speed cycle.

  In the present invention, the monitoring server further includes comparison means for comparing the data before processing with the data input by the host computer, and the processing means differs depending on the comparison means. It is further possible to further include a transmission means for updating and processing only the data determined to be transmitted and transmitting the data updated by the data comparison to the portable terminal via the Internet.

  According to the present invention, the monitoring server is provided with the comparing means, and as a result of the data comparison, the monitoring server updates and processes only the data that is different. As a result, the time required for data update and processing and the number of update / process data can be minimized, so that the screen can be updated in a high-speed cycle. Furthermore, the amount of data transmitted from the monitoring server to the mobile terminal can be reduced. This is particularly important in the plant field, which is the field of the present invention, where it is necessary to grasp real-time information and monitor the control state in real time. Further, in the plant field, which is the field of the present invention, the background that occupies most of the display screen is fixed, and the elements are often only changed frequently, that is, changing contents. In many cases, the above-mentioned effect by performing data comparison is large. Furthermore, in the present invention, the use of SVG makes it easier to compare data than when screen data is composed of bitmaps, for example, so that the above-described effect by performing data comparison is maximized.

  In the present invention, in the update, the update may be performed by setting an update cycle of data processed using the HTML slower than an update cycle of data processed using the SVG.

  According to the present invention, data update is performed such that the update cycle of data processed using HTML is slower than the update cycle of data processed using SVG. In the present invention, character information is processed using HTML and graphic information is processed using SVG. On the display screen in the plant field, there is little change in character information, but changes in graphic information are frequent. Since there is a tendency, the load for data update can be reduced by setting the update cycle as described above. Therefore, the time required for data update and processing becomes shorter, and it becomes easier to grasp the field information in real time and monitor the control state, and to update the screen in a high-speed cycle.

  According to the present invention, it is possible to provide a plant remote monitoring apparatus that can be used without being limited to a portable terminal having a specific environment.

1 is a schematic configuration diagram of PlantPAD100. 2 is a hardware configuration diagram of a mobile terminal 1, a host computer 6, a monitoring server 7, and a process control device 9. FIG. 3 is a schematic configuration diagram of a monitoring server 7. FIG. 1 is a schematic configuration diagram of a mobile terminal 1. FIG. Of the typical screens in PlantPAD100, this is a screen showing the status of the entire plant. Among the typical screens in PlantPAD100, it is a screen for displaying an alarm. Of the typical screens in PlantPAD100, the screen displays a trend. It is a screen for displaying an ITV (industrial television) image among typical screens in PlantPAD100. It is a figure for demonstrating changing and displaying a display color by SVG. It is a figure for demonstrating changing a character and a numerical value by SVG. It is a figure for demonstrating changing and displaying a bar graph by SVG. It is an image figure for showing operation of PlantPAD100. It is a figure which shows how much update time was shortened by performing the data update in this embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a preferred embodiment of a plant remote monitoring apparatus according to the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

(Overall configuration of PlantPAD100)
First, the structure of PlantPAD100 (equivalent to the “plant remote monitoring device” in the claims) according to the embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic configuration diagram of the PlantPAD 100. As shown in FIG. 1, the PlantPAD 100 includes portable terminals 1a to 1d, a host computer 6, a monitoring server 7, a process control device 9, a measuring device 10 (corresponding to the “field measuring instrument group” in the claims), a valve 11 The motor 12 (corresponding to the “field operation end group” in the claims). The mobile terminal 1 (generic name for “mobile terminals 1a to 1d”) and the monitoring server 7 are network-connected via the Internet 2, the router 3, the wireless LAN access point 4, the extension network 5, and the like. The host computer 6, the monitoring server 7, and the process control device 9 are connected to each other via a control network 8. Further, the measuring device 10, the valve 11, and the motor 12 are connected to the process control device 9 through a network. The Internet 2 is, for example, a wired LAN, a wireless LAN such as WiFi, or a 3G telephone line, the extended network 5 is a wireless LAN such as WiFi, and the control network 8 is, for example, Ethernet (registered trademark).

  FIG. 2 is a hardware configuration diagram of the mobile terminal 1. As shown in FIG. 2, the portable terminal 1 physically includes a CPU 11, a ROM 12 and a RAM 13 that are main storage devices, an input device 14 such as an operation button, and an output device 15 such as an LCD or an organic EL display. This corresponds to a “display” of the range), and includes a communication module 16 that transmits and receives data to and from other devices, and an auxiliary storage device 17 such as a memory device. Each function of the portable terminal 1 to be described later operates the input device 14, the output device 15, and the communication module 16 under the control of the CPU 11 by reading predetermined software on hardware such as the CPU 11, the ROM 12, and the RAM 13. At the same time, it is realized by reading and writing data in the main storage devices 12 and 13 and the auxiliary storage device 17. The portable terminal 1 performs data transmission / reception, display, update, and the like using three extremely ordinary functions of HTML, SVG, and Javascript. The mobile terminal 1 does not have a specific environment such as a JAVA virtual machine. Examples of the portable terminal 1 include general portable terminals such as a Windows or Apple notebook PC, a tablet such as an iPad, and a smartphone such as an iPhone or Android terminal.

  FIG. 2 is a hardware configuration diagram of each of the host computer 6, the monitoring server 7, and the process control device 9. As shown in FIG. 2, the host computer 6, the monitoring server 7, and the process control device 9 are physically composed of main storage devices such as CPUs 61, 71, 91, ROMs 62, 72, 92, and RAMs 63, 73, 93, and keyboards. And input devices 64, 74, 94 such as a mouse, output devices 65, 75, 95 such as a display, communication modules 66, 76, 96 such as a network card for transmitting / receiving data to / from other devices, a hard disk It is configured as a normal computer system including auxiliary storage devices 67, 77, 97, etc. Each function of the host computer 6, the monitoring server 7, and the process control device 9, which will be described later, allows predetermined computer software to be read on hardware such as CPUs 61, 71, 91, ROMs 62, 72, 92, RAMs 63, 73, 93. Thus, the input devices 64, 74, 94, the output devices 65, 75, 95, and the communication modules 66, 76, 96 are operated under the control of the CPUs 61, 71, 91, and the main storage devices 62, 72, 92, 63 are operated. , 73, 93 and auxiliary storage devices 67, 77, 97 are realized by reading and writing data.

  Returning to FIG. 1, the host computer 6 performs processing on signals from the measuring device 10, the valve 11, and the motor 12 in the plant. When the process control device 9 transmits signals from the measuring device 10, the valve 11, and the motor 12 to the host computer 6 via the control network 8, the host computer 6 performs database processing, arithmetic processing, and control for the received signal. Various processes such as device management processing and data analysis processing are performed. The host computer 6 outputs the processed data to the monitoring server 7 via the control network 8.

  FIG. 3 is a schematic configuration diagram of the monitoring server 7. The monitoring server 7 includes an input unit 701, a comparison unit 702 (corresponding to “comparison means” in claims), a processing unit 703 (corresponding to “processing means” in claims), and a transmission unit 704 (claims). Equivalent to “transmission means” in the range). The input unit 701 of the monitoring server 7 inputs data processed by the host computer 6. The processing unit 703 of the monitoring server 7 processes the character information in the input data using HTML (HyperText Markup Language) and the graphic information in the input data as SVG (Scalable Vector Graphics, Processing is performed using Scalable Vector Graphics, and processing procedures and dynamic processing in character information and graphic information are processed using Javascript. The transmission unit 704 of the monitoring server 7 transmits data processed by the processing unit 703 using HTML, SVG, or Javascript to the mobile terminal 1 via the Internet.

  The comparison unit 702 of the monitoring server 7 compares data before being processed by the processing unit 703 and data input by the host computer 6. When the comparison unit 702 outputs the result of the comparison to the processing unit 703, the processing unit 703 updates and processes only data determined to be different by the comparison unit 702. Here, in the update of the processing unit 703, the update cycle of the data processed using HTML is made slower than the update cycle of the data processed using SVG. For example, the update cycle of data processed using HTML can be set to 1 sec, and the update cycle of data processed using SVG can be set to 0.5 sec. The transmission unit 704 of the monitoring server 7 transmits only the data updated by the data comparison to the mobile terminal 1 via the Internet 2 or the like.

  FIG. 4 is a schematic configuration diagram of the mobile terminal 1. The mobile terminal 1 includes a receiving unit 101, a comparing unit 102 (corresponding to “comparison means” in the claims), and a display 103. The receiving unit 101 of the mobile terminal 1 receives data processed by the monitoring server 7 using HTML, SVG, or Javascript via the Internet 2 or the like. The portable terminal 1 displays the received data through the display 103.

  The comparison unit 102 of the portable terminal 1 compares data currently displayed on the display 103 with data transmitted from the monitoring server 7. When the comparison unit 102 outputs the result of the comparison to the display 103, the display 103 updates and displays only the data determined to be different by the comparison unit 102. Here, in the update of the display 103, the update cycle of data processed using HTML is made slower than the update cycle of data processed using SVG. For example, the update cycle of data processed using HTML can be set to 1 sec, and the update cycle of data processed using SVG can be set to 0.5 sec.

(Details of the processing unit 703 of the monitoring server 7)
Hereinafter, the processing unit 703 of the monitoring server 7 will be described in more detail. The processing unit 703 of the monitoring server 7 processes the character information using HTML, processes the graphic information using SVG, and processes the character information and graphic information using Javascript for processing procedures and dynamic processing. To do. Here, the reason why the processing unit 703 of the monitoring server 7 performs processing using three languages of HTML, SVG, and Javascript will be described. 5 to 8 show typical screens in the PlantPAD 100. FIG. FIG. 5 is a screen showing the status of the entire plant, FIG. 6 is a screen displaying an alarm, FIG. 7 is a screen displaying a trend, and FIG. 8 is a screen displaying an ITV (industrial television) image. These screens are screens displayed on the display 103 of the mobile terminal 10.

  The screen showing the status of the entire plant in FIG. 5 displays the entire plant schematically, and displays the operating status of the equipment in color (for example, red: operating, green: stopped, yellow: failure). Medium, etc.). In addition, the open / close status of the valve is displayed in color (for example, red: open, green: closed, etc.) Furthermore, the process state is displayed numerically (for example, pressure, temperature, flow rate, concentration, etc.). Furthermore, the latest alarm information is displayed as character information (lower part of FIG. 5). Here, since the operation status of the device, the valve open / close status, and the process status are mainly graphic display and change a lot, it is preferable to process information with SVG. In FIG. 5, information processed with SVG is displayed as “S”. Here, it seems that letters and numbers are included in the part displayed with “S”, but these letters and numbers are processed as a part of the entire graphic part displayed with “S”. It is a part, and does not correspond to “character information” in the claims, but corresponds to “graphic information”. Further, since the latest alarm information is a part that mainly displays characters and has little change, it is preferable to process the information in HTML. In FIG. 5, the portion of information processed with HTML is displayed as “H”.

  Since the screen for displaying the alarm in FIG. 6 is mainly composed of character display, it is preferable to process information in HTML. In the trend display screen of FIG. 7, it is preferable to process information with SVG for display of graph figures, and it is preferable to process information with HTML for display of character information. The screen for displaying the ITV image in FIG. 8 displays the streaming data of the camera, and it is a preferable display method to paste the streaming data in HTML. In addition, regarding the screens of FIGS. 5 to 8, it is preferable to process information using Javascript for dynamic processing such as processing procedures and data update.

  As described above, in the device for monitoring the plant with the portable terminal 1, the best information processing method most suitable for the characteristics of the plant monitoring screen is to process information by combining three languages of HTML, SVG, and Javascript. It can be said that. Therefore, the processing unit 703 of the monitoring server 7 processes information by using a combination of three languages of HTML, SVG, and Javascript.

  Here, it will be described that the SVG used by the processing unit 703 of the monitoring server 7 is a graphic format most suitable for the plant remote monitoring device. For example, for the graphic drawn as shown in FIG. 5, the PlantPAD 100 needs to dynamically update the display according to the actual process state. In this case, since SVG can be updated efficiently, it can be said that SVG is most suitable for graphic display of PlantPAD100. Hereinafter, a more specific updating method will be described with reference to an example.

  FIG. 9 is a diagram for explaining that the display color is changed and displayed by SVG. FIG. 9A shows the display symbol of the rotating machine, and shows that the display color has been changed from “red” to “green”. “Red” means “running” and “green” means stopped. FIG. 9B shows an SVG code for changing the display color in this way. It is possible to update from “red” to “green” only by rewriting “# ff0000” in the part marked with four places in the SVG code shown in FIG. 9B. Thus, since SVG can be used to efficiently update information, it can be said that SVG is most suitable for graphic display of a plant remote monitoring device.

  FIG. 10 is a diagram for explaining that characters and numerical values are changed and displayed by SVG. FIG. 10 shows an SVG code for displaying “52.2” in the portion indicated by “A” in FIG. 5. By simply rewriting “***. *” Of the part surrounded and marked in the SVG code shown in FIG. 10 to “52.2”, “52.2” is displayed in the “A” part of FIG. be able to. Thus, since SVG can be used to efficiently update information, it can be said that SVG is most suitable for graphic display of a plant remote monitoring device. 5 and 10 are merely examples, and the SVG code in FIG. 10 does not correspond to the screen in FIG. In this example, characters and numerical values are processed by SVG because characters and numerical values such as “52.2” are processed as a part of a figure. This is not inconsistent with the description of “text information processed using HTML (HyperText Markup Language)”.

  FIG. 11 is a diagram for explaining that a bar graph is changed and displayed by SVG. FIG. 11A shows symbols for displaying process data such as pressure and temperature in a bar graph. FIG. 11B shows an SVG code for displaying a bar graph corresponding to a value of “44.744667”, for example. The bar graph display on the graphic is updated only by rewriting “44.744667” of the portion surrounded by one place in the SVG code shown in FIG. 11B with a value calculated from actual process data. Can do. Thus, since SVG can be used to efficiently update information, it can be said that SVG is most suitable for graphic display of a plant remote monitoring device.

(Operation of PlantPAD100)
Next, operations performed by the PlantPAD 100 will be described with reference to FIG. FIG. 12 is an image diagram for illustrating the operation of the PlantPAD 100.

  First, the display 103 is opened on the portable terminal 1, and a page to be displayed is requested to the Web Server on the monitoring server 7 (step S1). Next, the Web Server on the monitoring server 7 transmits the requested page as static HTML or dynamically generated HTML to the display 103 of the portable terminal 1 (step S2).

  Next, the display 103 of the portable terminal 1 receives the HTML transmitted in step S2, and executes display processing on the display 103 based on the content. If there is a description for displaying SVG in HTML during display processing, an SVG transmission request is sent to Web Server (step S3). If there is a description using the Javascript library in the HTML, a transmission request for the Javascript library is sent to the Web Server (step S4).

  Next, the Web Server on the monitoring server 7 transmits the requested SVG to the display 103 of the portable terminal 1 (Step S5). Further, the Web Server on the monitoring server 7 transmits the requested Javascript library to the display 103 of the mobile terminal 1 (Step S6). Next, the display 103 of the portable terminal 1 receives the SVG transmitted in step S5 and displays it on the part based on the HTML description. In addition, the display 103 of the mobile terminal 1 receives the Javascript library transmitted in step S6 and prepares to execute it.

  Next, the display 103 of the mobile terminal 1 executes the command described in the Javascript library received in step S6 based on the Javascript command described in HTML received in step S2, and is on the monitoring server 7. Control data such as a process value is requested from the Web Server (step S7). Next, the Web Server on the monitoring server 7 requests and receives control data such as the requested process value from the process control device 9 separately connected to the monitoring server 7 (step S8). In step S8, for example, a request from the mobile terminal 1 is handed over to the execution process of the JAVA Servlet, and the JAVA Servlet receives data from the process control device 9, and the control data is transferred to the mobile terminal 1 via the Web Server. You may comprise so that it may be transmitted. Further, the Web Server or JAVA Servlet on the monitoring server 7 may directly request control data from the process control device 9 or may request it via the host computer 6. Next, the Web Server on the monitoring server 7 transmits the received control data to the display 103 of the portable terminal 1 (Step S9).

  Next, the Javascript command executed on the display 103 of the mobile terminal 1 receives the control data transmitted in step S9, compares the data currently displayed on the mobile terminal 1 with the received data, If there is a difference, the display of the corresponding part is updated with the received control data as the latest control data (step S10, step S11). Note that “data currently displayed on the mobile terminal 1” refers to data in SVG or data stored in a memory in the mobile terminal 1.

  Next, the display 103 of the portable terminal 1 repeatedly executes steps S6 to S11 at regular intervals according to a Javascript command.

  In the above description, step S10 and step S11 compare data on the mobile terminal 1 side. On the other hand, data comparison may be performed on the monitoring server 7 side without performing data comparison on the mobile terminal 1 side (steps S12 and S13). In this case, the comparison unit 702 of the monitoring server 7 compares the data before being processed by the processing unit 703 with the data input by the host computer 6 or the process control device 9. When the comparison unit 702 outputs the result of the comparison to the processing unit 703, the processing unit 703 updates and processes only data determined to be different by the comparison unit 702. Then, the transmission unit 704 of the monitoring server 7 determines that there is a difference, and transmits only the processed control data to the mobile terminal 1.

  In addition, regarding the speed of data update, the update cycle of data processed using HTML is made slower than the update cycle of data processed using SVG. For example, the update cycle of data processed using HTML can be set to 1 sec, and the update cycle of data processed using SVG can be set to 0.5 sec.

  In step S10 and step S11, or in step S12 and step S13, data is compared, and data is updated only when it is determined that there is a difference. FIG. 13 is a diagram showing how much the update time is shortened by performing data update by such a method. The left side of the table shown in FIG. 13 shows the update time when data is updated after data comparison is performed as in steps S10 and S11, or steps S12 and S13. On the other hand, the right side of the table shown in FIG. 13 shows the update time when data is updated for all data without performing data comparison. In addition, since the measurement of the difference in update time cannot be performed simultaneously with and without data comparison, it was measured and evaluated in different time zones. Moreover, the result shown in FIG. 13 has shown the actual measurement result in 1 plant of this applicant, and it is thought that a different result may come out by a plant and a time slot | zone. In addition, the measurement of the update time in FIG. 13 was performed “10 samples × 2 times” with and without data comparison. The reason why the number of update items is larger than the total number of items on the right side of the table shown in FIG. 13 is that there are those using acquired data at two or more locations.

  As shown in FIG. 13, the minimum value (MIN) of the display update time is 3 msec in the case of comparison and 41 msec in the case of no comparison, and it was found that the case of comparison was early with a difference of about 14 times. . In addition, the average value (AVE) was found to be 15 msec when there was a comparison and 63 msec when there was no comparison, and it was found that the case with the comparison was faster with a difference of about 4 times. In addition, the minimum value (MIN) of the number of update items is 58 when there is a comparison and 324 when there is no comparison, and the number of update data when there is a comparison is small due to a difference of about 5 to 6 times. I understood. Also, in the average value (AVE), the same comparison shows that the number of update data is 87 when there is a comparison and 324 when there is no comparison, and the number of update data when there is a comparison is about 3 to 4 times the difference. I understood. As described above, it can be seen that the update time of data is drastically shortened and the number of update data is drastically reduced by step S10 and step S11 or step S12 and step S13 of the present embodiment.

  Then, the effect | action and effect of PlantPAD100 concerning this embodiment are demonstrated. According to the PlantPAD 100 of this embodiment, the monitoring server 7 processes the input data from the host computer 6 using HTML, SVG, and Javascript, and the portable terminal 1 displays the processed data. That is, the portable terminal 1 satisfies the conditions for becoming one component of the PlantPAD 100 of the present embodiment as long as it can support HTML, SVG, and Javascript. In addition, HTML, SVG, and Javascript are extremely ordinary functions that are available in recent mobile terminals. Therefore, in the present embodiment, the mobile terminal 1 has a specific environment such as a JAVA virtual machine by intentionally performing data processing and data exchange using three extremely ordinary functions of HTML, SVG, and Javascript. The PlantPAD 100 according to this embodiment can be used even with a general portable terminal such as a Windows or Apple notebook PC, a tablet such as an iPad, or a smartphone such as an iPhone or Android terminal. Therefore, the convenience of the portable terminal 1 for using the PlantPAD 100 of this embodiment is enhanced.

  Moreover, according to this embodiment, it becomes possible to monitor the state of a plant from a remote place in real time. Therefore, the plant status can be monitored in real time from a remote location even if a plant operation expert is not on site. For this reason, until now, skilled workers have traveled to the local area to give guidance, but it is possible to give advice from a remote location, and even non-skilled personnel can receive on-site operation with the advice of skilled workers It becomes. That is, the skilled person can support a plurality of sites without being tied to the place. Especially when constructing a plant overseas, the operator's skill level is low, so long-term operation guidance was necessary, but using the PlantPAD100 of this embodiment enables operation guidance from a remote location. The dispatch period can be shortened.

  In the present embodiment, high-speed image processing can be performed by using SVG. Furthermore, in the plant field, which is the field of the present embodiment, the background that occupies most of the display screen is fixed, and the elements are often changed frequently, that is, change. In many cases, the content is limited. In such a case, high-speed image processing can be performed by using SVG. Also, by using HTML, it is possible to perform processing stably and conveniently for character information that is less changed than graphic information. Furthermore, by using Javascript, it is possible to perform processing stably and conveniently for processing procedures and dynamic processing in character information and graphic information.

  In the present embodiment, data exchange between the monitoring server 7 and the portable terminal 1 is performed via the Internet. Therefore, it takes a short time to exchange data. This is particularly important in the plant field, which is the field of the present embodiment. This is because in the field of plant control, it is particularly important to monitor the control state in real time by grasping on-site information, and it is necessary to update the screen in a high-speed cycle. On the other hand, in the invention described in Patent Document 1, the monitoring operation adjustment server and the portable terminal exchange data via the remote access server (RAS), and it takes a long time to exchange data. .

  Further, in the present embodiment, the mobile terminal 1 only displays data and does not perform a direct operation from the mobile terminal 1 to the site. When the portable terminal 1 is used by a large number of operators, there is a risk in terms of safety when each operator directly operates the field measuring instrument group or the field operation terminal group using the portable terminal 1, and security. This is because problems are likely to occur.

  Further, according to this embodiment, the mobile terminal 1 is provided with the comparison unit 102, and as a result of the data comparison, the mobile terminal 1 updates and displays only the data that is different. Thereby, the time required for data update and display and the number of update data can be minimized, so that the screen can be updated in a high-speed cycle. This is particularly important in the plant field where it is necessary to grasp real-time information and monitor the control state in real time. Also, in the plant field, the background that occupies most of the display screen is fixed, and the elements are often only changed frequently, that is, the contents that change are limited. In particular, in such a case, the above-described effect by comparing the data is large. Furthermore, in the present embodiment, by using SVG, for example, data comparison is facilitated as compared with a case where screen data is composed of a bitmap, for example, so that the above-described effect by performing data comparison is maximized.

  Further, according to this embodiment, data update is performed so that the update cycle of data processed using HTML is slower than the update cycle of data processed using SVG. In this embodiment, character information is processed using HTML and graphic information is processed using SVG. On the display screen in the plant field, changes in character information are small, but changes in graphic information are frequent. Since there is a certain tendency, by setting the update cycle as described above, it is possible to reduce the load on data update. Therefore, the time required for data update and display becomes shorter, and it becomes easier to grasp the field information in real time and monitor the control state, and to update the screen in a high-speed cycle.

  Further, according to this embodiment, the monitoring server 7 is provided with the comparison unit 702, and as a result of the data comparison, the monitoring server 7 updates and processes only the data that is different. As a result, the time required for data update and processing and the number of update / process data can be minimized, so that the screen can be updated in a high-speed cycle. Furthermore, the amount of data transmitted from the monitoring server 7 to the mobile terminal 1 can be reduced. This is particularly important in the plant field where it is necessary to grasp real-time information and monitor the control state in real time. Also, in the plant field, the background that occupies most of the display screen is fixed, and the elements are often only changed frequently, that is, the contents that change are limited. In particular, in such a case, the above-described effect by comparing the data is large. Furthermore, in the present embodiment, by using SVG, for example, data comparison is facilitated as compared with a case where screen data is composed of a bitmap, for example, so that the above-described effect by performing data comparison is maximized.

DESCRIPTION OF SYMBOLS 1 (1a-1d) ... Portable terminal, 6 ... Host computer, 7 ... Monitoring server, 9 ... Process control apparatus, 10 ... Measuring instrument, 11 ... Valve, 12 ... Motor, 100 ... PlantPAD.

Claims (5)

A host computer that performs processing on signals from on-site instrument groups or field operation terminals in the plant;
The processed data is input by the host computer, the character information in the input data is processed using HTML (Hyper Text Markup Language), and the graphic information in the input data is SVG ( Processing using scalable vector graphics (Scalable Vector Graphics), a monitoring server comprising processing means for processing using Javascript for processing procedures and dynamic processing in the character information and the graphic information,
A mobile terminal that includes a display, receives data processed by the monitoring server using the HTML, the SVG, or the Javascript via the Internet, and displays the received data through the display;
A plant remote monitoring device comprising:
The portable terminal is
Comparing means for comparing the data currently displayed on the display with the data transmitted by the monitoring server,
On the display, only the data determined to be different by the comparison means is updated and displayed.
The plant remote monitoring apparatus according to claim 1.
In the update, the update period of the data processed using the HTML is made slower than the update period of the data processed using the SVG, and the update is performed.
The plant remote monitoring apparatus according to claim 2.
The monitoring server is
Comparing means for comparing the data before processing with the data inputted by the host computer,
The processing means updates and processes only the data determined to be different by the comparison means,
Further comprising transmission means for transmitting data updated by the data comparison to the mobile terminal via the Internet,
The plant remote monitoring apparatus according to claim 1.
In the update, the update period of the data processed using the HTML is made slower than the update period of the data processed using the SVG, and the update is performed.
The plant remote monitoring apparatus according to claim 4.