JP2000089818A - Monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accelerate the display speed and reduce the transmission loads simultaneously while maintaining the easiness of maintenance provided in an intranet technique. SOLUTION: In a high-order monitoring terminal 30 when a Web perusal software 31 is activated, a Web server part 24 is accessed, a returned program 22p for display is activated and similarly returned screen data 21d (fixed data) are displayed. Also, when a request is supplied to a data transmission function part 23, the data transmission function part 23 transmits plant data inside a main memory part by the request and thereafter, by cyclically supplying the request to the data transmission function part 23, the plant data (variable data) are updated. In such a manner, this is such a monitoring device that the screen data are classified into the fixed data and the variable data, the fixed data are transmitted only in the first time and only the variable data are transmitted in the transmission of second and succeeding times.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitoring apparatus to which intranet technology or internet technology is applied.
In particular, the present invention relates to a monitoring device that can simultaneously increase the display speed and reduce the transmission load while maintaining the maintenance easiness of the intranet technology.

[0002]

2. Description of the Related Art Generally, in the field of monitoring a plant or the like, a monitoring device capable of collecting and storing data from a remote place and displaying the data on a monitoring terminal having an operator is widely used.

[0003] This type of monitoring device is, as shown below,
(A) A method using a dedicated function and (B) a method using a Web server.

(A) As shown in FIG. 5, a monitoring device using a dedicated function includes a lower existing monitoring device 2 having a data transmission function unit 1 and a middle-level wide-area monitoring device 4 having a data transmission function unit 3. , A plurality of upper monitoring terminals 7 having a screen data storage unit 5 and a terminal display function unit 6.

The lower-level existing monitoring device 2 collects and stores plant data, and distributes each plant data to the middle-range wide-area monitoring device 4 by the data transmission function unit 1.

Here, when displaying the plant data, the upper monitoring terminal 7 in the wide area monitoring office activates the terminal display function unit 6 of the specially created software, and the necessary plant data is dedicated (or used). A request is made to the medium-level wide-area monitoring device 4 via a (public) line.

[0007] In response to this request, the medium-level wide-area monitoring device 4 returns the plant data to the higher-level monitoring terminal 7 through the data transmission function unit 3.

The higher-level monitoring terminal 7 edits the plant data by using the terminal display function unit 6 in combination with the screen data stored in the screen data storage unit 5 in advance, and displays the edited screen.

When updating the plant data, the upper monitoring terminal 7 sends a request to the middle wide area monitoring device 4 by the terminal display function unit 6 as described above.
, The plant data on the display screen is updated.

(B) As shown in FIG. 6, the monitoring device by the Web server includes an existing lower-level monitoring device 2 similar to that described above.
A medium-level wide-area monitoring device 11 having a display data editing function unit 8, a display screen data storage unit 9, a Web server unit 10 comprising a program as a Web server and one function of a CPU, and a plurality of units having general-purpose Web browsing software 12 And an upper monitoring terminal 13.

As a Web server, for example, Netsca
pe Web Servers (Communications Server, Commerce se
rver, etc., both of which are trademarks of Netscape Communications) or Microsoft Internet Server (Microsoft In
Internet Server is a trademark of Microsoft Corporation). As general-purpose Web browsing software, for example, Microsoft Internet Explorer (Micros
oft Internet Explorer is a trademark of Microsoft Corporation or Netscape Navigator (Netscape Navigator is Netscape
Communications trademark) can be used.

Here, the lower-level existing monitoring device 2 distributes the plant data to the middle-range wide-area monitoring device 11 as described above. In the middle-level wide-area monitoring device 11, the display data editing function unit 8 incorporates the plant data into the predetermined position of the display screen data at regular intervals with respect to the display screen data read from the display screen data storage unit 9, and Update the display screen data.

On the other hand, the upper monitoring terminal 13 in the wide area monitoring office activates the Web browsing software 12 to display the plant data, and accesses the Web server unit 10 in the middle area wide area monitoring apparatus 11.

With this access, the Web server unit 10 transfers the display screen data to the higher-level monitoring terminal 13 via a dedicated (or public) line.

The upper monitoring terminal 13 displays a screen by the Web browsing software 12 based on the display screen data. When updating the plant data, the higher-level monitoring terminal 13 uses the Web browsing software 12 to access the Web server
b By receiving the display screen data from the server unit 10, the plant data is updated together with the entire display screen.

[0016]

However, the above-mentioned monitoring apparatus has the following problems in both of the methods (A) and (B).

(A) The upper-level monitoring terminal 7 stores the terminal display function unit 6 of the dedicated software and screen data for screen display in advance, and activates the terminal display function unit 6 to activate the medium-level wide area monitoring device. 4 to monitor the plant data. For this reason, screen display can be executed at a high speed to some extent.

However, in each of the upper monitoring terminals 7, work is often performed at a plurality of places or places apart from each other, such as places where the mobile terminal or the like goes.

For this reason, when the monitoring terminal 7 is remodeled in accordance with business improvement, it is necessary to update dedicated software and screen data of all the monitoring terminals 7. Therefore, maintenance for maintenance becomes more difficult as the number of monitoring terminals 7 increases.

(B) The monitoring device by the Web server is:
The difficulty in maintenance in the method (A) is solved because the display screen data and the Web server can be collectively improved in the middle-range wide-area monitoring device 11.

However, the monitoring device based on the Web server simply uses the intranet technology, and the display speed is slow and the load on the transmission path is high. Therefore, the performance required for the monitoring device is not satisfied. .

The present invention has been made in view of the above circumstances, and provides a monitoring apparatus capable of simultaneously increasing the display speed and reducing the transmission load while maintaining the maintenance easiness of the intranet technology. The purpose is to do.

[0023]

According to a first aspect of the present invention, there is provided a variable data storing means for updating and storing variable data, a fixed screen data being stored, and the variable data being combined with the fixed screen data. Fixed data storage means for storing a display program for displaying a monitoring screen; data transmission means for transmitting variable data in the variable data storage means in response to a variable data request; and fixed data storage means in response to access A web server device having a web server unit for transmitting the fixed screen data and the display program therein, and, when started, the web server unit accesses the web server unit and displays the display program transmitted from the web server unit. Web browsing software for starting and periodically giving the variable data request to the data transmission means is stored. And a monitoring device and a monitoring terminal having a browsing software storage means.

According to a second aspect of the present invention, there is provided the monitoring apparatus according to the first aspect, wherein the bitmap conversion means for converting an externally transmitted image signal into screen data in a bitmap format; For each predetermined position of the screen data converted by the conversion unit, the difference between the previous screen data and the current screen data is periodically detected, and the variable data including the obtained difference data and the position data of the difference data is detected. A variable data updating unit that writes data to the variable data storage unit.

Further, according to a third aspect of the present invention, in the monitoring device according to the first aspect, an imaging unit for imaging the generation source of the variable data and transmitting an imaging signal, and an imaging unit received from the imaging unit. Bitmap conversion means for converting a signal into screen data in a bitmap format, and determining whether or not there is an abnormality with respect to the variable data in the variable data storage means, and when there is an abnormality, the bitmap converted by the bitmap conversion means. Abnormality detecting transmission means for transmitting screen data in a format to the monitoring terminal; and interrupt display means for interrupting and displaying an imaging screen indicated by the screen data on the monitoring screen when receiving screen data from the abnormality detection transmitting means. And a monitoring device comprising:

(Operation) Therefore, the invention according to claim 1 takes the above-described means, so that when the Web browsing software is started, the monitoring terminal accesses the Web server unit in the Web server device. Then, the display program transmitted from the Web server unit is activated, the transmitted fixed screen data is displayed, and a variable data request is given to the data transmission unit. The variable data in the variable data storage unit is transmitted according to the data request, and thereafter, the variable data is updated by periodically giving the variable data request to the data transmission unit.

As described above, the screen data is classified into fixed data and variable data, and only the variable data is transmitted after the second transmission, so that the transmission load is reduced and the transmission speed is improved. Since the display is performed, it is possible to simultaneously increase the display speed and reduce the transmission load while maintaining the maintenance easiness of the intranet technology.

According to a second aspect of the present invention, the bitmap conversion means converts the image signal transmitted from the outside into screen data of a bitmap format, and the variable data updating means converts the image signal by the bitmap conversion means. For each predetermined position of the obtained screen data, a difference between the previous screen data and the current screen data is periodically detected, and the variable data including the obtained difference data and the position data of the difference data is stored in the variable data storage unit. Therefore, the operation corresponding to claim 1 can be applied to a monitoring operation using image data.

Further, according to a third aspect of the present invention, the image pickup means picks up the source of the variable data and sends out an image pickup signal, and the bitmap conversion means converts the image pickup signal received from the image pickup means into a bitmap format. The abnormality detection transmission means determines the presence or absence of an abnormality with respect to the variable data in the variable data storage means, and when there is an abnormality, monitors the screen data in the bitmap format converted by the bitmap conversion means. When the screen is transmitted to the terminal and the interrupt display means receives the screen data from the abnormality detection transmission means, the imaging screen indicated by the screen data is interrupted and displayed on the monitoring screen. When an error occurs, I
The TV screen can be interrupted and displayed.

[0030]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a schematic diagram showing the configuration of a monitoring apparatus according to a first embodiment of the present invention. The same parts as those in FIG. Here, different parts will be mainly described. In each of the following embodiments, the same description will not be repeated.

That is, the present embodiment is intended to achieve high-speed transmission of screen data while ensuring easiness of maintenance using the intranet technology. In general, the screen data is divided into fixed data and variable data. The data is classified into two types, and both fixed data and variable data are transmitted at the first time, but only variable data is transmitted at the second and subsequent times.

Specifically, the medium-level wide area monitoring device 20
A screen data storage unit 21 in which screen data 21d is stored;
It has a program storage unit 22 storing a display program 22p as a screen display function, a data transmission function unit 23, a program as a Web server, and a Web server unit 24 having one function of a CPU. A main storage (not shown) for storing plant data distributed from the monitoring device 2 is provided.

Here, the screen data storage section 21 stores screen data 21d (fixed data) indicating a fixed screen of a background portion excluding plant data (variable data) in the monitoring screen.
Is stored. As the screen data 21d,
For example, a plant flow diagram showing the equipment of the plant and the arrangement thereof can be schematically depicted.

The program storage unit 22 stores the screen data 21
A display program 22p for incorporating the plant data into d and displaying the entire monitoring screen 32 is stored, and the display program 22p is displayed by the Web server unit 24 at the time of the first display. It is available for download.

The data transmission function unit 23 has a function of accessing the Web browsing software 31 of the upper monitoring terminal 30 via the Web server unit 24 and transferring the plant data in the main storage unit to the upper monitoring terminal 30.

The Web server unit 24 is provided with the upper monitoring terminal 3
0, accessed by the Web browsing software 31
The function of transferring the screen data 21d in the screen data storage unit 21 and the display program 22p in the program storage unit 22 to the upper monitoring terminal 30 and the function of transmitting the access of the Web browsing software 31 to the data transmission function unit 23 Specifically, the above-mentioned general-purpose Web server can be applied.

The upper monitoring terminal 30 has a storage unit in which the Web browsing software 31 is stored, executes data transmission with the middle-level wide-area monitoring device 20 by starting the Web browsing software 31, and displays a monitoring screen. It has a function of displaying 32, for example, and is disposed in each of a plurality of wide area monitoring offices.

When activated, the Web browsing software 31 accesses the Web server 24 in the middle-level wide-area monitoring device 20 and performs data transmission between the Web server 24 and the data transmission function unit 23. , Web
It has a function of activating the display program 22p received from the server unit 24 and displaying the monitoring screen 32. Specifically, the above-mentioned general-purpose program can be applied.

Next, the operation of such a monitoring device will be described. The lower existing monitoring device 2 collects plant data
The data is stored and distributed to the medium-level wide-area monitoring device 20 by the data transmission function unit 1. The medium-level wide-area monitoring device 20 stores the plant data in a main storage unit (not shown). Here, it is assumed that the upper monitoring terminal 30 starts monitoring work. That is, at the time of the first display, the upper monitoring terminal 30 operates the Wen by the operator's operation.
b) Activate the browsing software 31 and access the Web server unit 24 in the middle-level wide area monitoring device 20. The operation up to this point is the same as the conventional operation.

In response to this access, the middle-level wide area monitoring device 20 causes the Web server unit 24 to sequentially monitor the screen data 21d in the screen data storage unit 21 and the display program 22p in the program storage unit 22 in the higher order. Transfer to terminal 30.

The upper monitoring terminal 30 activates the display program 22p by the Web browsing software 31, and the screen data 21d by the display program 22p.
Is displayed on the basis of the fixed screen of the monitoring screen 32.

Next, the higher-level monitoring terminal 30 accesses the data transmission function unit 23 in the middle-level wide-area monitoring device 20 via the Web server unit 24 by using the Web browsing software 31, and Establish a transmission path between

The data transmission function unit 23 transmits the plant data in the main storage unit to the upper monitoring terminal 3 by establishing the transmission path.
Deliver to 0.

The upper monitoring terminal 30 incorporates the plant data into the screen data 21d and edits it by the display program, and then displays the entire monitoring screen 32.

Next, the operation of updating the plant data as the second and subsequent displays will be described. When updating the plant data, the higher-level monitoring terminal 30 requests the data transmission function unit 23 in the middle-level wide-area monitoring device 20 to distribute the process data by using the Web browsing software 31.

In response to this request, the data transmission function unit 23 transmits the plant data in the main storage unit to the upper monitoring terminal 30.
Deliver to.

The upper monitoring terminal 30 displays the plant data on the screen data 21d by the display program 22p.
Then, the entire monitoring screen 32 is displayed.

As described above, according to the present embodiment, when the Web browsing software 31 is started, the upper monitoring terminal 30 accesses the Web server unit 24 in the middle wide area monitoring apparatus 20 and returns a response. Display program 22
p is activated, and the returned screen data 21d (fixed data) is displayed. When a request is given to the data transmission function unit 23, the data transmission function unit 23
By transmitting the plant data in the main storage unit and thereafter periodically giving a request to the data transmission function unit 23,
Update plant data (variable data).

As described above, the screen data is classified into fixed data and variable data, the fixed data is transmitted only for the first time, and only the variable data is transmitted after the second transmission, so that the transmission load is reduced. Improve transmission speed,
Real-time high-speed display required for plant monitoring and sufficient response speed required for plant control can be secured, so that the display speed is increased while maintaining the advantages of intranet technology such as easy maintenance. And reduction of the transmission load can be realized at the same time.

Further, with the reduction of the transmission load, the number of monitoring terminals 30 that can be used simultaneously can be increased, so that the expandability of the system can be improved.

(Second Embodiment) FIG. 2 is a schematic diagram showing a configuration of a monitoring apparatus according to a second embodiment of the present invention, and specifically shows the configuration shown in FIG.

That is, the present embodiment is a more specific configuration of the first embodiment. As shown in FIG. 2, the main storage unit 25 in the middle-range wide-area monitoring device 20 stores variable plant data. For example, in the case of monitoring a water storage tank, an analog signal indicating the water storage amount “100 to 110 m ³ ” and a state change signal “1” or “0” indicating the open or closed state of the flow path.
Is collected and stored as the current value.

The screen data 21d includes graphic data indicating a water tank symbol and a symbol "black circle (open; 1)" or "white circle (close; 0)" indicating the open / closed state of the flow path. The screen data including the screen data of the plant flow diagram including the line types and the like is held in the screen data storage unit 21 in the medium-level wide-area monitoring device 20 in advance.

Next, the operation of such a monitoring device will be described. First, the process from the collection of the plant data by the lower existing monitoring device 2 to the access operation to the Web server unit 24 by the upper monitoring terminal 30 for the first display for the first time is as described above.

Next, the middle wide area monitoring apparatus 20 causes the Web server unit 24 to display the screen data 21d (here, the plant flow diagram and the variable symbols “black circle” “white circle”) in the screen data storage unit 21 by this access. , Analog signal display position) and the display program 22p in the program storage unit 22 are sequentially transferred to the higher order monitoring terminal 30.

The higher-level monitoring terminal 30 activates the display program 22p by the Web browsing software 31, and the screen data 21d by the display program 22p.
, A fixed screen (plant flow diagram) 33 of the monitoring screen 32 is displayed in a screen display area on the Web browsing software 31.

Next, the higher-level monitoring terminal 30 accesses the data transmission function unit 23 in the middle-level wide-area monitoring device 20 via the Web server unit 24 by using the Web browsing software 31, and Establish a transmission path between

The data transmission function unit 23 transmits the plant data (an analog signal indicating “100 m ³ ” and a state change signal indicating “1”) in the main storage unit 25 to the upper monitoring terminal 30 by establishing the transmission path. To deliver.

The upper monitoring terminal 30 uses the display program 22p to display the analog value “100” indicated by the analog signal.
m ³ ”and the symbol“ black circle ”indicated by the state change signal“ 1 ”
Is edited into the screen data indicating the fixed screen 33, and then the entire monitoring screen 32 is displayed.

Next, the operation of updating the plant data as the second and subsequent displays will be described. When updating the plant data, the higher-level monitoring terminal 30 requests the data transmission function unit 23 in the middle-level wide-area monitoring device 20 to distribute the process data by using the Web browsing software 31.

In response to this request, the data transmission function unit 23 distributes the plant data (analog signal and state change signal) in the main storage unit 25 to the upper monitoring terminal 30.

The higher-level monitoring terminal 30 incorporates the plant data into the screen data 21d and edits it by the display program 22p in the same manner as described above, and then updates and displays the monitoring screen 33.

According to this processing, since the transmission data for the second and subsequent transmissions is only the plant data, it is possible to realize a considerably high-speed refresh unlike the related art.

As described above, according to the present embodiment, the first
The same effect as that of the embodiment can be obtained. In addition, since the screen data (variable symbols) can be changed according to the plant data (state change signal), the contents of the display screen can be further enhanced.

(Third Embodiment) FIG. 3 is a schematic diagram showing a configuration of a monitoring device according to a third embodiment of the present invention. In the present embodiment, the first embodiment is applied to a monitoring function based on image data. In general, screen data is classified into two types, fixed data and variable data. Both the screen data and the display program) and the variable data (bitmap difference data and difference position information data) are transmitted, but only the variable data is transmitted after the second time.

Specifically, the lower-level existing monitoring device 2x
It distributes screen data of the entire process flow diagram as plant data. The CPU body 2a transmits screen data composed of RGB signals, and distributes the transmitted screen data to the medium-level wide-area monitoring device 40 and its own CRT. And a CRT 2c for displaying a monitoring screen based on the distributed screen data.

The middle-level wide-area monitoring device 40 includes a bitmap data conversion unit 41, a screen data storage unit 42 for storing bitmap data for each screen, and a display program 4
3p, and a difference data storage unit 44, in which bitmap difference data 44d is stored.
, A position data storage unit 45 in which difference position data 45d is stored, a change difference function unit 46, and a data transmission function unit 2.
3 and a Web server unit 24.

Here, the bitmap data converter 41
Converts the screen data distributed from the lower-order existing monitoring device 2x into a bitmap format at regular intervals, and writes the obtained bitmap format screen data to the screen data storage unit 42.

The change difference function section 46 is a function for comparing the screen data previously written in the screen data storage section 42 with the screen data in the current screen data storage section 42 for each predetermined position in the screen data. When a difference is detected at a predetermined position of both screen data, bitmap difference data 44 indicating the difference is detected.
It has a function of writing d in the difference data storage unit 44 and a function of writing difference position data indicating the position in the screen data in the bitmap difference data in the position data storage unit 45.

In both the predetermined position and the difference position data 45d, the predetermined position is preset position data in which the screen data may change, while the difference position data 45d is the predetermined position data. Among the positions, there is a relationship that the position data indicates the position of the screen data at which the difference is actually detected.

The data transmission function unit 23 is accessed by the Web browsing software 31 of the upper monitoring terminal 30 via the Web server unit 24, and stores the bitmap difference data 44 d in the difference data storage unit 44 and the position data storage unit 45.
It has the same function as that described above for transferring the difference position data 45d in the above as plant data to the upper monitoring terminal 30.

Next, the operation of such a monitoring device will be described. The lower-level existing monitoring device 2x distributes the RGB signals to the middle-range wide-area monitoring device 4 by the distributor 2b that branches the RGB signal cable connecting the CPU and the CRT in hardware.
Deliver to 0.

In the intermediate wide area monitoring device 40, the bitmap data conversion unit 41 converts the screen data into the bitmap format at regular intervals, and stores the bitmap format screen data in the screen data storage unit 42. Write.

The change difference function section 46 compares the screen data previously written in the screen data storage section 42 with the screen data in the current screen data storage section 42 for each predetermined position in the screen data. When a difference is detected at a predetermined position between the two screen data, the bitmap difference data 44d indicating the difference is written into the difference data storage unit 44, and the difference position data 45d indicating the position in the screen data in the bitmap difference data 44d is stored. The data is written into the position data storage unit 45.

Hereinafter, as described above, the upper monitoring terminal 30
By starting the Web browsing software 31 and accessing the Web server unit 24 of the middle-level wide-area monitoring device 40, the screen data in bitmap format and the display program 43p are received from the middle-level wide-area monitoring device 40. The screen data is converted to W by this display program 43p.
Fixed screen 3 in the display area on the web browsing software 31
Displayed as 3.

Thereafter, the higher-level monitoring terminal 30 transmits the Web
The browsing software 31 allows the medium-level wide-area monitoring device 40
To receive the bitmap difference data 44d and the difference position data 45d as the plant data, and incorporate the bitmap difference data 44d into the screen data at the position indicated by the difference position data 45d for editing. By doing so, the monitoring screen 32 showing the entire plant flow diagram is displayed.

Similarly, at the time of updating the plant data, a request is made to the data transmission function unit 23 for bitmap difference data 44d and difference position data 45d as variable units.
The variable portion of the monitoring screen 32 is updated by the display program 43p based on the returned bitmap difference data 44d and the difference position data 45d.

As a result, since the transmission data for the second time and thereafter is only the bitmap difference data 44d and the difference position data 45d, a considerably high-speed refresh can be realized unlike the conventional case.

Further, the RG from the lower existing monitoring device 2x
Since the B signal is input as screen data in a hardware manner, expandability can be improved.

As described above, according to the present embodiment, the bitmap data conversion unit 41 uses the externally transmitted RG
The B signal is converted into screen data in the bitmap format, and the change difference function unit 46 periodically changes the difference between the previous screen data and the current screen data for each predetermined position of the screen data converted into the bitmap format. Is written, and the obtained bitmap difference data 44d and the difference position data 45d are written as variable data in the difference data storage unit 44 and the position data storage unit 45, respectively. Accordingly, the data transmission function unit 23 transmits the bitmap difference data 44d and the difference position data 45d to the monitoring terminal 30, so that the effects of the second embodiment can be obtained even in a monitoring operation using image data. As a result, the expandability of the system can be improved.

In the change difference function unit 46, when calculating the difference between the previous screen data and the current screen data, the change position is determined to some extent in the image of the monitor screen 32, instead of simply obtaining the difference. That is taken into account.

That is, the change difference function unit 46 checks whether or not only the screen data at the changing position (predetermined position) has changed and detects the difference, so that the entire screen data in the bitmap format is checked. Also, the differential processing can be executed at high speed.

(Fourth Embodiment) FIG. 4 is a schematic diagram showing a configuration of a monitoring device according to a fourth embodiment of the present invention. This embodiment is a modification of the second embodiment, and has a configuration in which an image interruption function at the time of detecting an abnormality is added. In general, when an abnormality is detected in plant data, the abnormality is dealt with. The image data from the ITV camera (industrial surveillance camera) at the location is distributed, and is interrupted and displayed on a higher-level monitoring terminal.

Specifically, in addition to the above-described functions, the lower-level existing monitoring device 2 has an ITV camera 2y, and has a function of transmitting RGB signals from the ITV camera 2y to the middle-range wide-area monitoring device 50.

The middle-level wide area monitoring device 50 includes a screen data storage unit 21, a program storage unit 22, a data transmission function unit 23a, a Web server unit 24, and a main storage unit 25 as described above.
In addition, a bitmap data conversion unit 51 and an ITV screen storage unit 52 for storing bitmap data for each screen
And an abnormal signal detection function unit 53. here,
The bitmap data conversion unit 51 converts the RGB signals received from the ITV camera 2y into a bitmap format at regular intervals, and writes the obtained bitmap format ITV screen data to the ITV screen storage unit 52.

The abnormal signal detection function section 53 is provided in the main storage section 25.
When an abnormality is detected based on the plant data in the ITV screen storage unit 52 according to the previously registered ITV information.
It has a function of notifying the ITV screen data in the data transmission function unit 23a. Here, the ITV information includes the plant data in which the abnormality is detected and the I
A TV screen is associated with, for example, plant data and an ITV screen obtained by capturing an image of a detector from which the plant data is generated. The information indicating the combination of the address of the plant data and the address of the ITV screen in the ITV screen storage unit 52 can be used.

The data transmission function unit 23a has an abnormal signal detection function unit 53 in addition to the above-described plant data distribution function.
Has a function of transferring the ITV screen data together with the plant data to the higher-level monitoring terminal 30 when the ITV screen data is notified from the PC.

The display program 22q in the program storage unit 22 has the function of displaying the monitoring screen 32 and, when the ITV screen data is transferred,
It has a function to interruptly display the ITV screen 34 indicated by the V screen data in the display area on the Web browsing software 31.

Next, the operation of such a monitoring device will be described. Now, it is assumed that the upper monitoring terminal 30 displays the entire monitoring screen 32 while updating only the plant data as described above.

In parallel with the display processing of the monitoring screen 32, the ITV camera 2 y of the existing lower-level monitoring device 2
The GB signal is sent to the medium-level wide area monitoring device 50.

In the middle-level wide-area monitoring device 50, the bitmap data converter 51 receives the R from the ITV camera 2y.
The GB signal is converted into the bitmap format at regular intervals, and the obtained bitmap format ITV screen data is written into the ITV screen storage unit 52.

The abnormality signal detection function unit 53 determines whether there is an abnormality based on the plant data in the main storage unit 25. Note that the content of the abnormality determination itself is a known technique such as, for example, the presence or absence of a deviation of a predetermined range in the process data.

Here, it is assumed that some abnormality such as a failure of the detector of the plant data occurs in the plant, and the plant data shows an abnormal value.

At this time, when the abnormality signal detection function unit 53 detects an abnormality based on the plant data in the main storage unit 25, the abnormality signal detection function unit 53 converts the ITV screen data in the ITV screen storage unit 52 according to the previously registered ITV information. Data transmission function part 2
Notify 3a.

The data transmission function unit 23a transmits the I
The TV screen data is transferred to the upper monitoring terminal 30 together with the plant data.

In the upper monitoring terminal 30, the ITV screen 34 indicated by the ITV screen data is interrupted and displayed in the display area on the Web browsing software 31 by the display program 22q to execute an interrupt process when an abnormality occurs.

As described above, according to the present embodiment, the IT
The V camera 2y captures, for example, the source of the variable data and sends out RGB signals, and the bitmap data conversion unit 51
Converts the RGB signals into screen data in a bitmap format, and the abnormal signal detection function unit 53 determines whether there is an abnormality with respect to the plant data in the main storage unit 25. Is transmitted to the data transmission function unit 23a. The data transmission function unit 23a transmits the notified ITV screen data to the monitoring terminal 30, and the monitoring terminal 30 receives the ITV screen data. Screen 34 shown by the ITV screen data
Is displayed on the monitor screen 32, so that in addition to the effect of the second embodiment, when an abnormality occurs, the ITV screen 34 corresponding to the abnormality can be interrupt-displayed.

(Other Embodiments) In the above embodiments, the monitoring device has been described as an example. However, the present invention is not limited to this.
As a monitoring and control device with a control function added to the monitoring device,
Of course, the present invention can be implemented in a similar manner to achieve similar effects.

In the above embodiments, the wide area monitoring operation has been described as an example. However, the present invention is not limited to this. For example, when monitoring each location on each floor in a high-rise building, the monitoring terminals on each floor are connected to each other. As in the case of connection, if the monitoring task has a large number of monitoring terminals at least in a region, the present invention can be similarly implemented to obtain the same effect.

Similarly, in each of the above embodiments, monitoring of a plant that normally involves control has been described as an example. However, the present invention is not limited to this. For example, monitoring of weather information such as temperature, humidity, and atmospheric pressure for each region, and The present invention can be implemented in the same manner to obtain the same effect even in a monitoring operation that does not require complete control, such as monitoring of atmospheric components on a highway or the like.

In addition, the present invention can be variously modified and implemented without departing from the gist thereof.

[0102]

As described above, according to the present invention, it is possible to provide a monitoring apparatus capable of simultaneously realizing a high display speed and a low transmission load while maintaining the maintenance easiness of the intranet technology.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a configuration of a monitoring device according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating a configuration of a monitoring device according to a second embodiment of the present invention.

FIG. 3 is a schematic diagram illustrating a configuration of a monitoring device according to a third embodiment of the present invention.

FIG. 4 is a schematic diagram illustrating a configuration of a monitoring device according to a fourth embodiment of the present invention.

FIG. 5 is a schematic diagram showing a configuration of a monitoring device using a conventional dedicated function.

FIG. 6 is a schematic diagram showing a configuration of a monitoring device using a conventional Web server.

[Explanation of symbols]

 2, 2x: Lower existing monitoring device 2a: CPU main unit 2b: Distributor 2c: CRT 2y: ITV camera 20, 40, 50: Medium wide area monitoring device 21d: Screen data 21, 42: Screen data storage unit 22p, 22q, 43p Display program 22, 43 Program storage unit 23, 23a Data transmission function unit 24 Web server unit 25 Main storage unit 30 Upper monitoring terminal 31 Web browsing software 32 Monitoring screen 33 Fixed Screen 34 ITV screen 41 51 51 Bitmap data converter 44 d Bitmap difference data 44 Difference data storage 45 d Difference position data 45 Position data storage 46 Change difference function 52 52 ITV screen storage 53 … Abnormal signal detection function

Claims (3)

[Claims] 1. Variable data storage means for updating and storing variable data, fixed screen data is stored, and a display program for displaying a monitoring screen by combining the fixed screen data with the variable data is stored. Fixed data storage means, data transmission means for transmitting variable data in the variable data storage means in response to a variable data request, and Web for transmitting fixed screen data and display program in the fixed data storage means by access A web server device having a server unit, when activated, starts the display program transmitted from the web server unit by accessing the web server unit, and transmits the variable data request to the data transmission unit. A monitoring terminal having browsing software storage means in which web browsing software for periodically giving is stored; A monitoring device comprising: 2. The monitoring device according to claim 1, wherein: a bitmap conversion unit that converts an image signal transmitted from outside into screen data in a bitmap format; At each predetermined position, a difference between the previous screen data and the current screen data is periodically detected, and the variable data including the obtained difference data and the position data of the difference data is written to the variable data storage unit. And a variable data updating unit. 3. The monitoring device according to claim 1, wherein: an imaging unit that captures an image of a source of the variable data and sends an imaging signal; and converts the imaging signal received from the imaging unit into screen data in a bitmap format. Bitmap conversion means for converting, and the presence or absence of an abnormality with respect to the variable data in the variable data storage means, when there is an abnormality, screen data in the bitmap format converted by the bitmap conversion means to the monitoring terminal Abnormality detecting transmission means for transmitting; and interrupt display means for interrupting and displaying an imaging screen indicated by the screen data on the monitoring screen when screen data is received from the abnormality detection transmitting means. Monitoring device.