JP3381772B2 - Production line monitoring system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production line monitoring system for remotely monitoring production information generated by a PLC, a camera or the like in a production line having an intranet to which a PLC (programmable controller), a camera or the like is connected. .

[0002]

2. Description of the Related Art In recent years, the communication protocol is TCP (Transmisson Control Protocol) / IP in not only the information infrastructure in a company but also FA (Factory Automation).
WWW (World Wii) as an application for browsing the information held by the server using (Internet Protocol).
Intranet using de Web) is drawing attention.

The use of an intranet for FA (Factory Automation) has the following advantages.

Since the client can be integrated into the Web browser, the data stored in the server used for development and management can be taken out as needed, and the development and management costs can be reduced. TCP / IP as a communication protocol and WW as an application for browsing the information held by the server
Since W and W are used in common, devices of different vendors can be easily connected. Therefore, the range of equipment selection is wide.

Therefore, a case where the intranet is introduced into the production line monitoring system of the FA system will be described with reference to FIG.

As shown in the figure, a production line monitoring system incorporating this intranet is a client personal computer (personal computer) having a Web browser.
60 and PLC server personal computer 6 as a Web server
1 and the camera server personal computer 62 are connected to the intranet 70, and the PLC server personal computer 6
1 is connected to a PLC (programmable controller) 63 via a network 80, a sensor 64, a switch 65, a relay 66, etc. are connected to the PLC 63, and a camera 67 is connected to a camera server personal computer 62. It has become.

Then, the client personal computer 60 is
When it is desired to browse data such as “input / output signal”, “production number”, and “inspection defect number” which are generated by the PLC 63 and are stored in the LC server personal computer 61, or when they are stored in the camera server personal computer 62. When you want to browse the image data, you can browse each data by accessing it using a Web browser .

Here, the operation contents at the time of browsing the data link of the production monitoring system constructed by the intranet as described above will be explained with reference to FIG.

The client personal computer 60 operates the PLC server personal computer 61 based on the instruction from the Web browser 601.
When an HTML data link request to transfer the HTML data is output to the Web server 611 (see FIG. 6), the Web server 611 of the PLC server personal computer 61 instructs the HTML creating means 612. For the data requested by the client personal computer 60, an HTML creation instruction for creating HTML data is output (see FIG. 6).

[0012] Here, the HTML data means data converted into a data format that can be displayed on the client personal computer 60.

Then, the HTML creating means 612 causes the PL
From the data such as “input / output signal”, “production number”, and “inspection defect number” accumulated and stored in the data link 613 of C63, the data requested for the HTML data link is acquired from the client personal computer 60 (see FIG. 6). (See inside), and the acquired data is converted into HTML and the HTML converted data is output to the Web server 611 (refer to FIG. 6).

Then, the We of the PLC server personal computer 61
The b server 611 uses the HTML creating means 612 to HT
Web of the client personal computer 60 with the ML data
It is transmitted to the browser 601 (see FIG. 6).

After that, the client personal computer 60 displays the transmitted HTML data.

The above is the PLC server personal computer 61.
The contents of the processing for displaying the data such as “input / output signal”, “production number”, and “inspection defect number” for the PLC 63 stored and stored in the are stored and stored in the camera server personal computer 62. The same applies to the case of processing for displaying the image data of the production line taken by the existing camera 66.

[0015]

However, in the production line monitoring system constructed by the intranet as described above, the Web server 6 of the PLC server personal computer 61 is used.
11 transmits the HTML data to the client personal computer 60 only when the client personal computer 60 makes an HTML data link request. Therefore, in order to display the HTML data on the client personal computer 61, as shown in FIG. 7 (a), H user to the Web browser of the client PC
Whether to make a TML data link request (click reload button in case of Netscape), Fig. 7 (b)
As shown in, Web bra of the client PC 60
It is necessary for the user to automatically send an HTML data link request at a fixed cycle (called a serve push method).

As shown in FIG. 7A, when displaying HTML data on the client personal computer 60, the user of the client personal computer 60 selects We.
b The content of the data link cannot be monitored in real time because it is not known whether or not the data link 613 has changed unless an operation for transmitting an HTML data link request from the browser 601 to the PLC server personal computer 61 is performed. There was a point.

Further, as shown in FIG. 7B, when displaying the HTML data on the client personal computer 60, the user is required to use the client personal computer 60.
Web server 601 to PLC server PC 61
If the time interval of the HTML data link request transmitted to the device is reduced, it becomes possible to monitor the data link change in real time. However, even when the data link is not changed, the HTML data link request can be monitored. Is frequently transmitted, which causes a problem that useless traffic is generated on the intranet 70.

In view of the above problems, it is an object of the present invention to provide a production line monitoring system that monitors changes in data links in real time without generating unnecessary traffic.

[0019]

To SUMMARY OF THE INVENTION To achieve the above object, an invention according to claim 1, connected to the client Web browser is running, the programmable controller server Web server runs, but the intranet is
Is in a production line monitoring system is built, the programmable controller server, said programmable
Data storage / storage means for storing and storing the data output by the programmable controller connected to the controller controller server, and whether or not the data stored in the data storage / storage means corresponds to preset event setting conditions . and a event setting condition monitoring means for monitoring, by said event setting condition monitoring means, when the data stored in the data storage memory means is determined that corresponds to the event setting condition, the data storage memory Read the data corresponding to the event setting conditions from the
The data is sent from the web server to the client via the intranet, and the client sends data corresponding to the event setting condition to the web browser via the intranet.
The feature is that it is received and displayed by the user.

According to a second aspect of the present invention, in the first aspect of the present invention, the programmable controller server stores data corresponding to the event setting condition.
And event setting condition corresponding data storage means, by the event setting condition monitoring means, data stored in the data storage memory means only when it is determined that corresponds to the event setting condition, event set from the data storage memory means create an HTML data is read data corresponding to the condition, the event an HTML data created
Together and stores the setting condition corresponding data storage means, and the HTML data generating means for outputting a file name of the HTML data that created the event setting condition monitoring means,
The client includes the programmable controller.
HTML from the event setting condition monitoring means of the roller server
When the file name of the encrypted data is received, it is displayed on the web browser.
In contrast, the programmable controller server Web server
To send an HTML request to the server
An HTML transmission instruction means for outputting is provided, and the Web browser
When the browser receives the HTML transmission instruction , the browser
Via the web server of the programmable controller server,
Event setting conditions Stored in the corresponding data storage means
It is characterized in that the HTML data is read and displayed .

According to the invention of claim 3, a Web browser is
A running client and a professional running a web server
Gramable controller server and web server are running
Connected to the intranet.
In built production lines monitoring system, the programming
The programmable controller server is a programmable controller.
Programmable controller connected to the tracker server
Data storing and storing means for storing and storing the data output by
And the data stored in the data storage / storage means
Corresponds to the preset event setting conditions
And event setting condition monitoring means for monitoring whether or not ,
Data storage and storage by the event setting condition monitoring means
The data stored in the method meets the event setting conditions
If it is determined that the
Data corresponding to the event setting conditions is read from We
b Send from the server to the client via the intranet
And the event setting conditions are met in the camera server.
HTML image data of the production line at the time
Outputting an instruction to transmit to Ianto, the Kamerasa
The camera is connected to the camera server.
Image data storage that stores and stores image data on the production line
The programmable controller server is provided with a storage means.
To send the HTML image data to the client.
The image data storage / storage means,
Read the image data when the vent setting conditions are met
Send from server to client via intranet
The client meets the event setting conditions
Data to be transmitted via a Web browser via an intranet
Receiving and displaying, the event setting conditions are met
Web browsing of time image data via the intranet
The feature is that it is received and displayed by the The.

According to a fourth aspect of the present invention, in the third aspect of the invention, the camera server is the event setting item.
Event setting conditions that store image data corresponding to
The image data storage means and the event setting condition monitor
When the stage receives an instruction to create HTML image data,
If the event setting conditions are met from the image data storage means
Read out image data and create HTML image data
Then, the created HTML image data is set to the event.
The condition is stored in the image data storage means and
Set the file name of the created HTML image data as an event.
HTML image data generator for outputting to constant condition monitoring means
Characterized in that it comprises a stage, a.

[0023]

In the present invention, when it is determined that the data stored in the data storage / storage means corresponds to the preset event setting condition, the data storage / storage means corresponds to the event setting condition. When the data is read, sent to the client, and the client receives the data corresponding to the event setting condition via the web server of the programmable controller server, W
Let the eb browser display this.

In particular, when it is judged that the data stored in the data storage / storage means corresponds to the preset event setting condition, the data storage / storage means stores the data corresponding to the event setting condition. At the same time as reading out and transmitting this to the client, the image data accumulating / storing means reads out the image data of the production line when the event setting condition is met and transmits it to the client, and the client transmits it via the Web server of the programmable controller server. Then, when these data are received, the web browser displays them.

[0026]

DETAILED DESCRIPTION OF THE INVENTION A production line monitoring system according to the present invention will be described below with reference to the drawings.

FIG. 1 is a construction diagram of an embodiment of a production line monitoring system incorporating an intranet according to the present invention.

FIG. 2 is a block diagram showing the configuration of an embodiment of the production line monitoring system according to the present invention.

As shown in FIG. 1, the production line monitoring system incorporating the intranet of this embodiment uses a Web
Client personal computer (personal computer) on which browser 102 operates (hereinafter referred to as client) 1
0, a PLC server personal computer (hereinafter referred to as PLC server) 11 and a camera server personal computer (hereinafter referred to as camera server) 12 on which a Web server operates are connected to the intranet 20.

In the production line monitoring system of this embodiment, the PLC server 11 inputs / outputs I / O information from / to the sensor 14, the switch 15, the relay 16 and the like via the network 30 (hereinafter, referred to as a programmable controller). , PL
C) 13 and the camera server 12 is connected to the camera 17.

The client 10 is, as shown in FIG.
Display timing condition setting means 101 and Web browser 1
02.

The display timing condition setting means 101 uses W
The PLC server 1 sets a timing condition (hereinafter, referred to as an event condition) for automatically updating the display by the eb browser 102.
1 and at the same time receiving additional HTML data (to be described later) from the PLC server 11, an HTML request (to be described later) is transmitted to the PLC server 11 We.
An instruction (HTML conversion request transmission instruction) is output to the browser 102.

Here, as the above-mentioned event condition,
For example, 0 of the address of the data link storage memory described later
This is a case where the display by the Web browser 102 is automatically updated when the address value becomes "1".

When the Web browser 102 receives the HTML request transmission instruction from the display timing condition setting unit 101 , the Web browser 102 outputs the HTML request to the PLC server 11 or the camera server 12, and at the same time, the HTML request is sent.
PLC the HTML data (to be described later) for the encryption request
HTML image data (described later) is acquired from the server 11 and from the camera server 12, and the acquired data is displayed.

The PLC server 11 is the event generating means 1
11, data link memory 112, HTML data creation means 113, Web server 114, HTML
And a digitized data memory 115.

When the event condition is input from the client 10, the event generation means 111 monitors whether or not the data stored in the data link memory 112 corresponds to the input event condition, and the data link memory 112 is monitored. If the event condition corresponds to the event condition, the HTML data (described later) is sent to the HTML creating means 113.
Output an HTML data creation instruction to create
In addition, HTML image data (described later) is sent to the HTML image data creating means 122 of the camera server 12.
The HTML image data creation instruction is output so as to create the.

Further, when the data link memory 112 meets the event condition, the event generating means 111 stores the file name of the HTML data previously created by the HTML data creating means 113 and the H of the camera server 12.
The H created earlier from the TML image data creating means 113
Receives the file name of the TML image data and
The additional HTML data in which the file name of the HTML image data is added to the file name of the L data is output to the display timing condition setting means 101 of the client 10.

The data link memory 112 includes an "input / output signal", a "production quantity", and
The link data such as "the number of defective inspections" is stored.

When the HTML data creating means 113 receives the HTML data creating instruction from the event creating means 111, it reads the link data corresponding to the event condition from the data link memory 112 and creates predetermined HTML data. Is stored in the HTML data memory 115, and the HTML data memory 11
The file name of the HTML data stored in 5 is output to the event generation means 111.

The Web server 114 is the client 10
When the HTML request is received from the Web browser 102, the corresponding HTML data is stored in the HTML data memory 115.
Read the L data, and outputs the read-out data to the Web browser 102 of the client 10.

The HTML data memory 115 is an HTML
The HTML data created by the L data creating means 13 is stored.

The camera server 12 is the Web server 121.
An HTML image data creating means 122, an image data memory 123, and an HTML image data memory 124.
It consists of and.

The Web server 121 is the client 10
When the HTML conversion request is received from the Web browser 102, the HTML image data memory 124 is read, and the read data is read by the Web browser of the client 10.
It is designed to output to the 102.

The HTML image data creating means 122 is
When receiving the HTML image data creation instruction from the event generation means 111, the image data captured by the camera 17 stored in the image data memory 123 is read out, stored in the HTML image data memory 124, and converted into the HTML. The file name of the HTML image data stored in the image data memory 124 is output to the event generation means 111.

The image data memory 123 stores and stores images of the production line taken by the camera 17.

The HTML image data memory 124 stores H
The image data read out from the image data memory 123 by the TML image data creating means 122 is stored.

The PLC 13 includes a sensor 14 and a switch 15
A control signal is output to the relay 16 or the like in accordance with an input signal from, and data such as "production quantity" and "inspection failure quantity" is generated.

Next, the operation of the production line monitoring system of this embodiment will be described with reference to the flowcharts of FIGS.

The PLC server 11 is waiting for reception of the event condition (step 210), and the camera server 12
Is waiting for the reception of the HTML image data creation instruction (step 310), the display timing condition setting means 101 of the client 10 transmits the event setting condition for automatically updating the display screen to the PLC server 11 (step 110). ) (See FIG. 2), the event generating means 111 of the PLC server 11 monitors the contents of the data link memory 112 (step 230) (see FIG. 2), and the data link memory 112 corresponds to the event condition. It is determined whether or not (step 240).

When the event generating means 111 determines that the data link memory 112 does not meet the event condition (step 240; N), it monitors until the event condition is met while the event linking condition is met. If it is determined that there is (step 240; Y), the HTM
An HTML data creation instruction for creating the HTML data is output to the L data creation means 113 (see FIG. 2), and the HTML image data is created for the HTML image data creation means 122 of the camera server 12. An HTML image file creation instruction for creating a file is output (step 250) (see FIG. 2).

Then, the HTML data creating means 113 of the PLC server 11 reads the data corresponding to the event setting condition from the data link memory 112 (see FIG. 2) and creates the HTML data (step 26).
0), this is stored in the HTML data memory 115 (see FIG. 2), and then the file name of the created HTML data is output to the event generating means 111 (see FIG. 2).

On the other hand, when the camera server 12 receives the HTML image data creation instruction from the PLC server 11 (step 320), it sets the event setting condition from the image data of the production line photographed and stored in the image data memory 123. The image data at the time corresponding to is read (see in FIG. 2), HTML image data is created (step 330), and the created image data is stored in the HTML image data memory 124 (see in FIG. 2). ),
The file name of the created HTML image data is output to the event generation means 111 (step 340) (see a in FIG. 2).

Event generation means 11 of PLC server 11
1 is the H created by the HTML data creating means 113
When receiving the file name of the TML data and the file name of the HTML image data created by the HTML image data creating means 122, the file name of the HTML image data is added to the received HTML data file name ( (Step 270), the additional HTML data is transmitted to the display timing condition setting means 101 of the client 10 (step 280) (see b in FIG. 2).

When the display timing condition setting means 101 receives the additional HTML data (step 120),
An HTML request transmission instruction is output to the Web browser 102 (see c in FIG. 2).

After that, the web browsing of the client 10
The 102 sends the HTML request to the Wec of the PLC server 11.
b to the server 114 (step 130) (see d in FIG. 2).

Web server 114 of PLC server 11
When receiving the HTML conversion request from the client 10 (step 290), the HTML conversion data memory 115
The HTML data stored in the Web browser 102 of the client 10 is read out (see e in FIG. 2).
(Step 295) (see f in FIG. 2).

Web browser 102 of client 10
When the HTML data is received from the PLC server 11 (step 140), the HTML transmission request for the file name of the HTML image data added to the additional HTML data is transmitted to the camera server 12 (step 150). (See h in FIG. 2).

Web server 121 of camera server 12
Receives the HTML request (step 350),
The HTML image data specified by this HTML conversion request is read from the HTML image data memory 124 (see FIG. 2).
Then, the read HTML image data is transmitted to the Web browser 102 of the client 10 (step 360) (see j in FIG. 2).

Web browser 102 of client 10
Receives the HTML image data (step 16
0), the previously received HTML data and the received HTML
The image data and are displayed (step 170).

In the production line monitoring system of this embodiment, as shown in FIG. 4, the display timing condition setting means 101 of the client server 10 transmits the event setting conditions to the event generating means 111 of the PLC server 11. If the PLC server 11 changes the data corresponding to the received event setting condition, the client 10 sends an HTML request to the PLC server 11, and the PLC server 11 converts the corresponding HTML data and HTML data. Since the image data is received and displayed, when a predetermined change occurs in the content of the data link, the content of the data link when the event occurs and the corresponding image data can be displayed on the client. it can.

Further, since the event generation means immediately notifies the event monitoring means of the occurrence of the event, the Web browser 102 transmits the HTML request in response to this, so that useless traffic is not generated on the network. . Therefore, it becomes possible to monitor the production line in real time.

In the production line monitoring system of this embodiment, the camera server 12 is connected to the intranet 20 and the image data taken by the camera is also displayed as monitoring data. As a matter of course, when the link data is sufficient, the image data is unnecessary, and thus it is needless to say that the camera server 12 does not need to be provided in the intranet 20.

[0063]

As described above, according to the present invention, when it is determined that the data stored in the data storage / storage means meets the preset event setting condition, the data storage / storage means outputs an event. The data corresponding to the setting condition is read out, transmitted to the client, and when the client receives the data corresponding to the event setting condition via the Web server of the programmable controller server, the Web browser displays it.

Therefore, changes in the data link can be monitored in real time without generating unnecessary traffic.

In particular, when it is judged that the data stored in the data storage / storage means meets the preset event setting conditions, the data storage / storage means reads the data corresponding to the event setting conditions. At the same time as reading out and transmitting this to the client, the image data accumulating / storing means reads out the image data of the production line when the event setting condition is met and transmits it to the client, and the client transmits it via the Web server of the programmable controller server. Then, when these data are received, in order for the Web browser to display this,
Even if the information obtained from the data link is insufficient for monitoring the production line, it can be sufficiently supplemented.

[Brief description of drawings]

FIG. 1 is a construction diagram of an embodiment of a production line monitoring system incorporating an intranet according to the present invention.

FIG. 2 is a block diagram showing a configuration of an embodiment of a production line monitoring system according to the present invention.

FIG. 3 is a flowchart showing the processing operation of the production line monitoring system of this embodiment.

FIG. 4 is an explanatory diagram illustrating a communication procedure between a client and a PLC server in the production line monitoring system of this embodiment.

FIG. 5 is a block diagram showing a configuration of an embodiment of a conventional production line monitoring system.

6 is a block diagram showing a processing operation between a client and a PLC server in the production line monitoring system of the conventional embodiment shown in FIG.

7 is an explanatory diagram illustrating a communication procedure between a client and a PLC server in the production line monitoring system of the conventional embodiment illustrated in FIG.

[Explanation of symbols]

10 Client PC 101 display timing condition setting means 102Web browser 11 PLC server 111 Event generation means 112 data link memory 113 HTML conversion means 114 Web server 115 HTML data memory 12 camera server 121 Web server 122 HTML image data creating means 123 Image data memory 124 HTML image data memory

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Claims (4)

(57) [Claims] 1.Web browserClient running
When,Programmable controller that runs a Web server
La serverWhen,Is an intranetToConnectionBeenIt was constructed
In the production line monitoring system, The programmable controller server isConnected to the programmable controller server Professional
Accumulates and stores the data output by the programmable controller
Data storage and storage meansWhen, The data stored in the data storage storage means is stored in advance.
Corresponding to the event setting conditions set forWhether or not
Event setting condition monitoring means to be monitored, Equipped withBy the event setting condition monitoring means, Data storage memory
The data stored in the method meets the event setting conditions
Determined to doWas doneIn case of data storage means
Data corresponding to event setting conditions fromWe
b server via intranetSend to client
Believe in The client is Data corresponding to the event setting conditionsIntranet
Via a web browserSpecial feature to receive and display
A production line monitoring system for collection. 2. The programmable controller server
Is Store the data corresponding to the event setting conditionsIbe
Data storage meansWhen,The above Data storage and storage by means of event setting condition monitoring
The data stored in the method meets the event setting conditions
Data storage / storage means only when it is determined that
Read the data corresponding to the event setting conditions fromhandH
Create TML data,Created HTML data
Data storage means corresponding to the event setting conditionsTo memorize
At the same time, enter the file name of the created HTML data.
HTML data output to vent setting condition monitoring means
And meansEquipped with The client is Event setting of the programmable controller server
Receives the file name of HTML data from the condition monitoring means
Then, the programmable controller is
An HTML request is sent to the web server of the roller server.
HTML transmission instruction to output HTML transmission instruction
means Equipped with The Web browser is When receiving the HTML transmission instruction, the programmable coordinator
Event setting via the web server of the controller server
HTML conversion stored in constant condition applicable data storage means
Read and display data Claim 1 characterized by the above.
Production line monitoring system described. 3.Client running a web browser
And a programmable controller that runs a Web server
A server, a camera server on which a web server operates,
Is connected to the intranet to build a production line supervisor
In the visual system, The programmable controller server is A professional connected to the programmable controller server
Accumulates and stores the data output by the programmable controller
Data storage and storage means, The data stored in the data storage storage means is stored in advance.
Whether or not the event setting conditions that are set for
Event setting condition monitoring means to be monitored, Equipped with Data storage and storage by the event setting condition monitoring means
The data stored in the method meets the event setting conditions
If it is determined that the
Data corresponding to the event setting conditions is read from We
b Send from the server to the client via the intranet
And the event setting conditions are met in the camera server.
HTML image data of the production line at the time
Output an instruction to send to the client, The camera server is A production license taken by a camera connected to the camera server
Image data storage and storage means for storing and storing image data
Equipped with HTML conversion from the programmable controller server
Instructed to send the image data to the client
Then, the event setting condition
Read the image data at that time and install it from the Web server.
Sent to the client via LANET, The client is Intranet data corresponding to the event setting conditions
It is received and displayed on a Web browser via
The image data when the event setting conditions are met.
Receive and display on a web browser via LANET This
And a production line monitoring system. 4.The camera server is Image data corresponding to the event setting conditions is stored
Event setting conditions corresponding image data storage means, An HTML image is displayed by the event setting condition monitoring means.
When receiving the data creation instruction, the image data storage means
Image data corresponding to event setting conditions from
Created HTML image data and created HTML image
Image data is stored in the image setting condition
The created HTML image data
The file name of the data to the event setting condition monitoring means
HTML image data creating means, Equipped with The production line supervisor according to claim 3, characterized in that
Vision system.