JPH10254732A - Monitor system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monitor system where the computer of a monitoring side is connected with the WWW(world wide web) server of a monitoring object side with the general-purpose network of internet and the like and a monitoring screen is displayed. SOLUTION: The monitoring system is provided with the monitoring side computer 1 provided with a WWW browser 2 as a means for transmitting/ receiving data based on a hyper text communication procedure through the general-purpose network 3 and displaying data by a character and a graphic on a display device and the WWW server 5 of the monitoring object side which is connected to the general-purpose network 3, converts monitoring data collected from a controller 7 into hyper text data and providing data in accordance with the request of the WWW browser 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitoring system in various fields, and more particularly to a monitoring system for connecting a monitoring side and a monitoring target side by a general-purpose network for monitoring.

[0002]

2. Description of the Related Art FIG. 9 shows, for example, Mitsubishi Electric Technical Report, Vol.
70, no. 7 is a configuration diagram showing a basic configuration of a conventional monitoring system (particularly, FIG. 1) disclosed in P63P70. In the figure, 11 is a monitoring computer, 12 is a network, 4 is a data server, 6 is a monitoring network, 7 is a controller, and the monitoring computer 1 on the monitoring side
1 and the data server 4 on the monitored side are connected to the network 12
, And the data server 4 exchanges monitoring data collected from the controller 7 via the monitoring network 6.

[0003]

The conventional monitoring system as described above has a problem that a dedicated network is required to construct or change the network 12 over a wide area. In addition, when a general-purpose network is used, there is a problem in that a transfer procedure that can be used in a network in which a plurality of networks such as the Internet are interconnected is limited, and the communication speed is low.

The present invention has been made to solve the above problems, and is a simple transfer procedure in which a monitoring computer and a monitoring target data server are connected via a general-purpose network such as the Internet. It is an object of the present invention to obtain a monitoring system that performs a data update procedure in a hypertext transfer procedure and can display a monitoring screen using a browser.

[0005]

A monitoring system according to the present invention transmits and receives data based on a hypertext communication procedure via a general-purpose network, and displays a data on a display device by characters or graphics as a browser. And a monitoring target data server that is connected to a general-purpose network and converts the monitoring data collected from the controller into hypertext data and provides the data in response to a browser request. is there.

Further, another invention according to the present invention has a browser for transmitting and receiving data based on a hypertext communication procedure via a general-purpose network and displaying the data on a display device using characters and graphics. Changes the display by the screen definition data specifying the background graphic, the position of the graphic part on the background and the update data displayed by the graphic part, the update data indicating the update of the monitoring data, and the update and operation of the monitoring data A monitoring computer composed of graphic components, a hypertext transmission unit that transmits hypertext data in response to a request from the browser, and analyzes the transmitted screen definition data to select monitoring data required for screen display Update data generation that generates update data by converting it to hypertext It has the door, in which a data server and the monitored side data server connected to the general network for collecting monitoring data from the controller.

Further, the update data is configured as a plurality of update data groups divided by adding identification data.

[0008] The update data is composed of a data body and a tag for identifying the data.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is a configuration diagram showing Embodiment 1 of the present invention. In FIG. 1, reference numeral 1 denotes a computer for monitoring, a WWW for displaying a hypertext.
(World Wide Web) browser. Reference numeral 3 denotes a general-purpose network that connects computers on the monitoring side and the monitoring target side. In the first embodiment, the Internet is the Internet. Reference numeral 4 denotes a data server that collects monitoring target data from the controller 7 via the monitoring network 6. Reference numeral 5 denotes a WWW server which is a monitoring target side and transmits hypertext data. The WWW server 5 includes a hypertext transmission unit 51 and an update data generation unit 52. Hypertext transmission unit 51
Transmits hypertext data in response to a request from the WWW browser 2. The update data generation unit 52 analyzes the transmitted screen definition data in the monitoring screen, holds a list of the displayed graphic components, and generates update data based on the list. That is, monitor data necessary for screen display is selected from the transmitted screen definition data, and the data acquired from the data server 4 is converted into hypertext to generate the update data 55. Further, it holds screen definition data 53 and graphic parts 54.

FIG. 2 is an explanatory diagram showing details of monitoring screen data. The screen definition data 53 is an HTML (Hyper Text Mark) that specifies fixed image data of the background.
uplanguage) tag 531, the position of the graphic part 54 arranged on the background, and the graphic part 5
HTML tag 5 specifying the update data 55 displayed by 4
32. The graphic component 54 is a program that can be executed by the WWW browser 2 and changes the display according to the update data 55. The display is also changed by an operation on a WWW browser, that is, an operation such as a mouse click performed by a monitor. FIG. 2 shows an example of a component that changes the display according to a value with respect to a Boolean value. . . The update data 55 is a list representing the update of the monitoring data corresponding to the graphic component 54 included in the screen definition data 53. Note that the HTML tag 532 is expressed in a format of <tag representing a program name = “part name” value = “value (group or the like)”>. Also, WWW
A graphic component, which is a program executed by the browser, has a drawable area (usually a rectangle). When arranging the rectangle of the program execution area on the background display area, H
The display area of the WWW browser is divided and arranged by the TML tag <TABLE>. <TABLE> designates the number of vertical and horizontal cells of the table and the contents of the cells to configure the table. In FIG. 2, reference numeral 15 denotes an actual display on a display device such as a cathode ray tube.

Next, the operation will be described. FIG. 3 is WW
5 is a flowchart illustrating the operation of the W browser 2. WW
The W browser 2 requests the screen definition data 5
3 is obtained from the WWW server 5. Next, based on the screen definition data 53, the background data and the graphic
4 is obtained from the WWW server 5, the background is displayed, and the graphic component 54 is executed. Next, WWW Browser 2
Acquires the update data 55 from the WWW server 5, and the executed graphic part 54 displays the update data 55 according to the read value.

Hereinafter, description will be given according to the flow of the flowchart of FIG. In step S31, a monitoring screen is selected. That is, the input of the monitoring screen selection by the keyboard, the mouse, or the like is received. In step S32 (steps are omitted and only reference numerals are described), the screen definition data 53 is requested to the hypertext transmission unit 51. After receiving the data, the data is displayed, and the processing of S33 and thereafter is performed. In S33, it is determined whether the screen contains the graphic component 54. If it is included, the graphic component 54 is requested to the hypertext transmitting unit 51 in S34. After the reception, the process from S35 on is performed.
In S35, the graphic component 54 is executed. Thereafter, the individual graphic parts operate (apparently) in parallel, and FIG.
Is performed. Next, in S36, the update data 55 is requested to the hypertext transmission unit 51. After receiving the data,
The data is displayed by the processing of the graphic parts in FIG. In S37, a screen change request by the monitor is determined. If there is a screen change, the process of S31 is performed. In S38, an end determination is made. Until the end, the data from the hypertext transmission unit 51 is received, and the processing from S36 onward is repeated. If S33 is NO, the process moves to S37. That is,
Since it may be only fixed images (including tables etc.),
In this case, the process proceeds to S37.

FIG. 4 is a flowchart showing an operation relating to data change of the graphic part 54. The graphic component 54 reads the update data 55 and checks whether there is any change. The display is updated when there is a change or when there is an operation by a supervisor. That is, in S41, WWW
The data corresponding to the component is acquired from the monitoring data received by the browser 2. The corresponding data is determined based on the data offset. In S42, a change in data is determined. If there is no change, the process of S43 is performed.
44 is performed. In S43, the operation of the observer (hereinafter, referred to as S43)
User operation). If the operation requires display update, the process of S44 is executed. In S44, drawing is performed. Next, in S45, the end of the program is determined.
The processing from S41 onward is repeated until the end. The graphic parts 54 are arranged on the browser, and the execution of the program is terminated (by the browser) if the base screen is changed.

FIG. 5 is a flowchart showing the operation of the hypertext transmission unit 51, and FIG. 6 is a flowchart showing the operation of the update data generation unit 52. The hypertext transmission unit 51 transfers hypertext data in response to a request from the WWW browser 2. When the requested data is the screen definition data 53, the update data generation unit 52 extracts a tag specifying the graphic component 54 from the screen definition data 53, and holds a list of monitoring data included in the screen as an initial state. When the requested data is the update data 55, the update data generation unit 52 acquires the data in the held monitoring data list from the data server 4, generates hypertext data, and sends it to the WWW server 5. The WWW server 5 converts this hypertext data to W
Transfer to WW browser 2. Also, the update data generation unit 5
2 is when the data in the monitoring data list changes
It generates hypertext data and sends a transfer request to the WWW server 5. The hypertext transmission unit 51 receives this request and transfers it to the WWW browser 2.

Hereinafter, description will be given according to the flow of the flowchart of FIG. In S51, a data request from the WWW browser 2 is received. In S52, it is determined whether the requested data is the screen definition data 53 based on the requested data name. If it is screen definition data, since the screen is changed, the process of S53 is performed. In S53, the update data generation unit 5
2 is notified of the requested screen, and data for this screen is generated thereafter. Next, in S54, the requested data is transmitted to the WWW browser 2. At S55,
The end is determined. The process of responding to the data request (S51 and subsequent steps) is repeated until termination is instructed.

Next, a description will be given according to the flow of the flowchart of FIG. In S61, it is determined whether or not there is a screen change notification in the process of S53 in FIG. If there is a screen change, the process of S62 is performed. In S62, the data list is changed to that of the screen specified by the hypertext transmission unit 51.
In S63, it is determined whether there is a data request from the WWW browser 2 via the hypertext transmission unit. If there is a request, the process of S64 is performed, and if not, the process of S67 is performed. S64
Then, data is obtained from the data server 4. Next, S
At 65, 55 update data in FIG. 2 is generated. S
At 66, an end determination is made. S61 until termination is instructed
The following processing is repeated. If S67 is NO, S67,
In S68, the update of the data in the data list is determined. If it has been updated, the process of S69 is performed. S69 is
This is the same processing as S64. Step S610 is the same processing as step S65. Next, in S611, the hypertext transmission unit 51 is requested to transmit the data generated in S610 to the WWW browser 2.

According to the first embodiment, the monitoring screen data is transferred as hypertext data and displayed by the WWW browser 2, and the WWW server 5 uses the transferred screen definition data 53 to convert monitoring data necessary for screen display. By selecting and transferring, it is possible to change the display when a data request occurs due to a change in the value of the monitoring data or an operation on the graphic component 54, and to obtain a monitoring system via a wide area network such as the Internet. Can be. In addition, drawing commands for displaying graphics are composed of only data that can be transferred by the hypertext transfer procedure, such as text, images, programs that can be executed by a browser, and the like, and drawing commands are not transferred one by one. Is reduced. It should be noted that the hypertext transfer procedure is a standard procedure for transferring hypertext data (HTTP (Hypertext Trans).
fer Protocol).

Embodiment 2 FIG. In the second embodiment, the update data 55 in the first embodiment is configured by a plurality of data lists as indicated by 55a in FIG. Also,
HT representing a graphic component in the screen definition data 53a
The ML tag 532a includes a group number designating which data list contains the data. In step S41 of FIG. 4, the graphic component obtains data by examining the specified data list and displays the data. Further, in S42 of FIG. 4, the update of the data is determined by looking at the update data of the group specified by the tag 532a. The update data generation unit creates a list of data for each group number when changing the screen, and when data is requested, generates the hypertext data of the group including the requested data. In the flowchart, data is generated for each group at 610 in FIG. Other operations are the same as those in the first embodiment.

Embodiment 3 In the third embodiment, the update data 55 in the first embodiment is configured as a pair with a tag for identifying monitoring data as indicated by 55b in FIG. In addition, since the data itself is distinguished by a tag such as 001, any division may be used. Graphic parts are
In S41 of FIG. 4, the tag in the update data 55b is compared with the tag of the data referenced by the component specified by the HTML tag 532 in the screen definition data to obtain matching data. Also, in S42 of FIG.
The data update is determined by comparing the tag 5b with the tag specified by the HTML tag 532. The update data generation unit generates data for each group in S610 of FIG. Other operations are the same as those in the first embodiment.

In the first, second and third embodiments, a WWW server 5 for transmitting hypertext data and converting data of a monitoring data server for collecting monitoring data from a controller into hypertext data, and a WWW server 5 And a WWW browser 2 for acquiring hypertext data from a general-purpose network, displaying the acquired data, and executing a program included in the acquired data, but a data server and a browser having equivalent functions are provided. The same effect can be obtained by using.

[0021]

As described above, the present invention is configured such that the data server on the monitoring target transfers the monitoring screen data as hypertext and displays it on the browser of the monitoring computer. There is an effect that a monitoring system can be constructed at a low cost.

Further, the monitoring target data server is configured to transfer the monitoring screen data as hypertext and display the data on a browser of the monitoring computer.
Monitoring screen data is composed of screen definition data, graphic parts, and update data, so that the display can be changed by changes in monitoring data or user operation based on the hypertext transfer procedure, and monitoring can be performed with a small amount of data transfer There is an effect that the screen can be displayed.

Furthermore, since the configuration is such that the update data is divided and transmitted, there is no need to transmit unchanged data, which has the effect of reducing the amount of data.

Also, since a tag is attached to the update data and the graphic parts using the data are configured to identify the data, one piece of data may be transmitted to a plurality of parts using the same data. It is possible to transmit only the data with the error, which has the effect of reducing the data amount.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a configuration of monitoring screen data according to the first embodiment of the present invention.

FIG. 3 is a flowchart showing an operation of a WWW browser according to Embodiment 1 of the present invention.

FIG. 4 is a flowchart showing an operation of the graphic component according to the first embodiment of the present invention.

FIG. 5 is a flowchart showing an operation of the hypertext transmitting unit according to the first embodiment of the present invention.

FIG. 6 is a flowchart showing an operation of the update data generation unit according to the first embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a configuration of monitoring screen data according to Embodiment 2 of the present invention.

FIG. 8 is an explanatory diagram showing a configuration of monitoring screen data according to Embodiment 3 of the present invention.

FIG. 9 is a configuration diagram illustrating a conventional monitoring system.

[Explanation of symbols]

1 computer, 2 WWW browser, 3 general-purpose network, 4 data server, 5 WWW server, 6 monitoring network, 7 controller, 51 hypertext transmission unit, 52 update data generation unit, 53 screen definition data, 54 graphic parts, 55 update data .

Claims (4)

[Claims] 1. A monitoring computer that transmits and receives data based on a hypertext communication procedure via a general-purpose network and has a browser as a means for displaying data on a display device using characters and graphics. A monitoring system, comprising: a monitoring target side data server connected to the server to convert monitoring data collected from a controller into hypertext data and to provide the data in response to a request from the browser. 2. A browser for transmitting / receiving data based on a hypertext communication procedure via a general-purpose network and displaying the data on a display device using characters or graphics, wherein the screen data is a background graphic, It is composed of screen definition data for specifying the position of the graphic component and update data displayed by the graphic component, update data for updating the monitoring data, and a graphic component for changing the display by updating or operating the monitoring data. A monitoring computer, and a hypertext transmission unit for transmitting hypertext data in response to a request from the browser, analyzing the transmitted screen definition data, selecting monitoring data necessary for screen display, converting the data into hypertext, and updating the data. And an update data generation unit that generates And a monitoring target data server connected to the general-purpose network. 3. The monitoring system according to claim 2, wherein the update data is configured as a plurality of update data groups divided by adding identification data. 4. The monitoring system according to claim 2, wherein the update data comprises a data body and a tag for identifying the data.