JPH11120477A - Measuring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a measuring system capable of activating measurement by a measuring device from a measurement controller connected with a network, and capable of data-processing by the measurement controller without preparing any measured data processing program for the every measuring device. SOLUTION: A distributed measurement system includes a measurement controller 10 and a distributed measuring device 50 connected through a computer network 90. The distributed measuring device 50 having a function as a measuring device and a function as a computer is provided with a measuring module 52, an HTTP server processing part 54, and a measurement control server processing part 56. A hyper text including a program necessary for measurement control or a measured data processing is offered from the HTP server processing part 54 to the measurement controller 10 and an operation instruction transmitted from the measurement controller 10 is received by the measurement control server processing part 56.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measurement system for controlling a measuring instrument and a test apparatus by a computer connected via a network.

[0002]

2. Description of the Related Art Generally, when a measuring instrument is controlled by a computer, for example, a control communication interface board conforming to IEEE488 is added to the computer side, and the computer and the measuring instrument are connected to the IEEE488.
You need to connect with a cable.

In a network connected via such an IEEE cable, only one computer that operates as a system controller conforming to IEEE488 is allowed. Therefore, in order to realize a flexible measurement system using a plurality of computers, complicated network management must be performed. For example, when a computer that performs a control operation conforming to IEEE488 and a computer B other than the computer B are connected to the measuring instrument, data is transmitted from the measuring instrument to the computer B first. A is requested to A that “the measuring instrument wants to transmit data to the computer B”. After that, the computer A receives the request and sends the request to the computer B.
By transmitting a request that "the measuring instrument wants to transmit data to the computer B", data can be transferred between the measuring instrument and the computer B. Thus, the IEEE
In the network based on 488, since the computer A serving as the system controller grasps the data transfer destination and controls the data transfer, the data transfer is performed between the measuring instrument and the plurality of computers A and B. To do so, it is necessary to perform complicated control as described above,
A dedicated network program is required.

[0004]

By the way, even if the measuring instrument and the computer are connected by any method as described above, the measurement cannot be automated unless the measuring instrument can be started from the computer. However, there are the following problems when trying to start the measuring instrument from a computer. First, there are many types of computers that implement a measurement activation program required to activate a measuring instrument. For example, a new computer is continuously released every 3 to 6 months. Creating a measurement activation program is a very inefficient task. Also, there are a wide variety of controlled instruments, and new instruments are emerging every year. Therefore, even if the controlling computer is used without any change, it is necessary to create a measurement control program for starting the operation of a new measuring instrument for each newly introduced measuring instrument, which is also very efficient. Is bad work. To improve these efficiencies, there is a measuring instrument control method that can execute a measuring control program that controls measuring instruments on any computer and that can start measuring instruments without creating a measuring control program for each measuring instrument. Required. However, in an environment where a computer and a measuring instrument are connected, there is no measuring instrument control method that does not depend on the type of computer and the type of measuring instrument at present.

[0005] The present invention has been made in view of the above points, and an object of the present invention is to provide a measurement system which can start measurement from a measurement control device (computer) connected to a network. It is in. Further, another object of the present invention is to provide a measurement control device that does not create a measurement data processing program corresponding to each measurement device when the measurement control device connected to the network acquires measurement data of the measurement device. Is to provide a measurement system capable of performing data processing.

[0006]

In order to solve the above-mentioned problems, a measurement system according to the present invention connects a measurement device and a measurement control device via a predetermined network, and transmits and receives data between them. Using web technology. Specifically, the measurement device includes a first server unit that provides the measurement control device with a measurement control program usable by the measurement control device and a measurement data processing program corresponding to the measurement data. As described above, since the measurement device is provided with the first server means, and the first server means provides the measurement control program and the measurement data processing program to the measurement control device, the measurement control device side provides these measurement control programs and measurement data processing programs. A predetermined control operation or processing operation can be performed without creating a program.

Further, the measuring device is provided with a second server means for receiving a command sent when the above-described measurement control program or the like is executed by the measurement control device and performing a control operation according to the command. Accordingly, various controls such as starting the measurement of the measurement device from the measurement control device can be performed.

In particular, the measurement system of the present invention utilizes the web technology as described above, and is transmitted from a measurement control device as a web browser via a first server means as a web server of the measurement device. You can browse hypertext including various programs. The hypertext specifies that the browser reads a measuring device control Java program necessary for controlling the measuring device. Therefore, upon reading the measuring device control hypertext provided by the first server means of the measuring device, the browser reads and executes the measuring device control Java program described therein. The measuring device control Java program provides an environment in which a user can control the measuring device via a browser. By using the measurement device control program provided by the measurement device to the measurement control device as the measurement device control Java applet, a measurement program execution environment independent of the measurement control device can be provided.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A distributed measuring system according to an embodiment of the present invention is constructed by connecting a computer and a measuring device using a computer network.
It is characterized by using a web technology to realize a measurement program execution environment independent of the types of computers and measurement devices. Hereinafter, a distributed measurement system according to an embodiment will be described with reference to the drawings.

There is a web technology that allows a computer connected to a computer network to specify, access, and browse a file on another computer. This web technology includes a web browser that browses files and a web server that provides files that the web browser browses. Files that can be viewed by a web browser are called hypertext. This hypertext is provided by a web server. The technology used between web browsers and web servers is URL
(Universal Resource Locators) and HTTP (Hype
r Text Transform Protocol) and HTML (Hyper Te
xt Makeup Language).

[0011] Web browsers can use a URL to specify the hypertext of a computer on a computer network. Using a protocol called HTTP, a web browser connects to a web server and acquires hypertext from the web server. HTML is a language for specifying a display format when a web browser displays hypertext. Further, when HTML is used, it is possible to display a hypertext provided by a web server other than a web server which provides a hypertext on a web browser. The hypertext is described in HTML in a predetermined format.

The web browser processes hypertext transferred by HTTP. The processing in the web browser displays the hypertext on the display of the computer as the web browser. The hypertext can also specify a program to be executed by a web browser using HTML. The program is called Java Applet. If the hypertext specifies a Java applet, the web browser sends the specified Java applet to the HTT.
Read using P and start the loaded Java applet.

By constructing the measurement system of the present embodiment using such web technology, a measurement system independent of the type of the measurement device and the measurement control device for controlling the measurement device can be realized.

FIG. 1 is a diagram showing a configuration of a distributed measurement system according to an embodiment to which the present invention is applied. As shown in the figure, the distributed measurement system of the present embodiment includes a measurement control device 10 and a distributed measurement device 50 connected via a computer network 90.
The measurement control device 10 is realized by a computer that operates as a browser, and has a normal processing function as a computer. In addition, the distributed measuring device 50
Has both a function as a measuring instrument and a function as a computer, and has a communication function of transmitting and receiving various data and the like necessary for the measurement via a computer network 90 together with a predetermined measuring operation. In FIG. 1, one measurement control device 10 and one distributed measurement device 5
0 is connected via a computer network 90, but in general, a plurality of measurement control devices 10 are connected.
And a plurality of distributed measurement devices 90 are connected via a computer network 90.

The above-described measurement control device 10 operates as a general computer having a communication function. Therefore, the processor 12, the memory 14, the display device 16, the input / output (I / O) device 18, the pointing device 20, and the network -It is configured to include the interface unit 22.

The processor 12 executes various processes based on various programs stored in the memory 14.
For example, various processors such as Intel's X86 and Pentium processor families and Sun Microsystems' spark chip family are used. Various programs are executed under a predetermined operating system. As this operating system, for example, Windows (registered trademark) of Microsoft Corporation is used. In addition, an appropriate browser means provided in an environment in which a predetermined operating system is operating is Netscape (registered trademark) of Netscape Communications Inc. or Internet Explorer (registered trademark) of Microsoft Corp.
It can be realized by such as. Note that, in the above-described example, the case where the measurement control device 10 is mainly configured using a personal computer has been described. However, the measurement control device 10 may be configured using a workstation or another type of computer or a device having functions equivalent to a computer. Is also good. However, in these cases, a suitable processor, operating system, or browser software can be appropriately selected and used for each.

The display 16 is composed of a CRT or a liquid crystal display, and displays an operation screen and measurement results. The I / O device 18 includes a keyboard, a pen, and other well-known external ports and interfaces, such as a serial port and a parallel port. The I / O device 18 receives input of operation instructions from a user and output of predetermined character string data and the like. Do.

The pointing device 20 is used to indicate a position on the screen of the display device 16,
Generally, a mouse or trackball is used, but an electrostatic pad or other device can also be used.

The network interface unit 22
It is physically connected to the distributed measurement device 50 via the computer network 90, and sends and receives various data between the measurement control device 10 and the distributed measurement device 50.

The processor 1 of the measurement control device 10 described above.
2 is connected to the memory 14 and other components via a bus.

As described above, the measurement control device 10 has a configuration as a computer and is generally realized by a personal computer or a workstation, but uses a computer having functions equivalent to or higher than those. You can also. In addition, portable or notebook personal computers and similar small and easy-to-portable computers are easy to move, and can be installed in a small area, so that space can be saved. Especially convenient.

Further, the distributed measuring device 50 shown in FIG.
In order to perform a predetermined measurement operation and communication operation, a measurement module 52, an HTTP server processing unit 54, a measurement control server processing unit 56, a processor 58, a memory 60, a display device 62, an I / O device 64, a pointing device 6
6. The network interface unit 68 is included.

The measurement module 52 measures the electrical characteristics of the device under test, for example, voltage and frequency. The HTTP server processing unit 54 reads the hypertext or the like stored in the memory 60 and transmits the hypertext or the like to the measurement control device 10 connected to the computer network 90 via the network interface unit 68.

The measurement control server processing section 56 inputs a measurement module control command to the measurement module 52 via the bus, and transmits a continuous measurement start command and a measurement module control command transfer command sent from the measurement control device 10 to the socket. Receive using communication. This socket communication is
This is a communication method via a computer network well known in the art. Note that the above-described HTTP server processing unit 54 corresponds to the first server unit, and the measurement control server processing unit 56 corresponds to the second server unit.

The processor 5 having another configuration is
8, memory 60, display device 62, I / O device 6
4. The pointing device 66 and the network interface unit 68 basically have the same functions as those of the components included in the measurement control device 10, but do not necessarily have to have exactly the same specifications.

The computer network 9 shown in FIG.
For 0, various methods generally used for inter-computer communication can be applied. FIG. 2 is a diagram illustrating a configuration example of a measurement system using 10Base-T Ethernet as the computer network 90. As shown in the figure, when 10Base-T Ethernet is used, each of the plurality of measurement control devices 10 and the plurality of distributed measurement devices 50 is connected to a 10Base-T hub 92 via a 10Base-T cable 94. By doing so, a computer network 90 is realized. Thus, each measurement control device 10 and each distributed measurement device 50
Are connected to each other, the 10Ba connected to each
It is only necessary to connect the se-T cable 94 to the 10Base-T hub 92, and the computer network 90 can be easily constructed.

FIG. 3 illustrates a computer network 90.
For realizing the network interface units 22 and 68 when using 10Base-T Ethernet
It is a figure showing the composition of 0Base-T Ethernet board. As shown in the figure, a 10Base-T Ethernet board 22A that realizes the network interface unit 22 includes an Ethernet controller chip 30 that controls transmission and reception of data to and from the 10Base-T Ethernet, and a 10Base-T Ethernet electrical board. A pulse module 32 for shaping a signal and an EEPROM 34 for storing a computer network address
And 10B to which a 10Base-T cable 94 is connected
ASE-T connector 36.

The network interface unit 6
10-Base-T Ethernet board 68 that realizes 8
A has exactly the same configuration. In addition, the above-described configuration is 1
Although the configuration for 0Base-T Ethernet is shown, when other Ethernet is used, for example, 10Base-T Ethernet is used.
When 5 Ethernet or 10Base-2 Ethernet is used, other computer networks 90 can be easily connected by using the network interface units 22 and 68 for each Ethernet and connecting them with a predetermined cable or the like. Can be realized.

The measurement system of the present embodiment has such a configuration, and its operation will be described below. The above-described distributed measurement device 50 has an HTTP server processing unit 54 and provides the distributed measurement device control hypertext to the measurement control device 10. The distributed measurement device control hypertext is stored in the memory 60 of the distributed measurement device 50 in advance so that the HTTP server processing unit 54 of the distributed measurement device 50 can provide the measurement control device 10. . This distributed measuring device control hypertext specifies the reading of the distributed measuring device control Java applet in HTML format. Also, inside the distributed measuring device control Java applet, reading of the measurement data processing Java applet is specified. This applet has a function of displaying measurement data measured by the distributed measurement device 50.

A user who controls the distributed measuring device 50
Using the measurement control device 10 operating as a browser, the distributed measurement device control hypertext provided by the distributed measurement device 50 is specified by a URL. Then, the measurement control device 10 reads the distributed measurement device control hypertext, and thereafter, a browser is displayed on the screen of the display device 16 of the measurement control device 10, and an environment in which the distributed measurement device 50 can be controlled is established. .

FIG. 4 is a diagram showing an example of a display screen when reading the distributed measuring device control hypertext from the distributed measuring device 50 by the measurement control device 10 realized by a personal computer. In the example shown in the figure, when the user operates the pointing device 20 or the I / O device 18, "http://150.85.233.25/" is displayed in the URL field of the browser.
/ Down7na. htm ". The URL specified by the user is the distributed measurement device 50
Computer network address and distributed measurement device control hypertext name.

When the user inputs predetermined data in the URL field and presses a return key indicating the end of the data input, the measurement control device 10 requests the transfer of the hypertext of the specified URL. . This transfer request is made to the HTTP server processing unit 54 of the distributed measurement device 50, and the HTTP server processing unit 54, when the designated distributed measurement device control hypertext exists in the memory 60, The data is read out and transferred to the measurement control device 10. If the specified hypertext does not exist in the memory 60, a notification to that effect is sent to the measurement control device 10.

FIG. 5 is a diagram showing a specific example of the distributed measuring device control hypertext transferred in this manner. The portion enclosed by “<applet>” and “</ applet>” shown in FIG. 3 is a predetermined distributed measuring device control Java applet program (for example, “down7 .Java ”is specified to read the compiled“ down7.class ”distributed measurement device control Java applet. Further, the distributed measuring device control Java applet is used to control the measurement data processing Java applet by the distributed measuring device 50.
Indirectly programmed to read from For example, a distributed measurement device control Java applet
The program includes "GraphCanvas.java"
"GraphCanvas.a" which compiles the "measurement data processing Java applet program". clas
s "is described to read the measurement data processing Java applet.

In the above example, the “continuous measurement” button, the “continuous measurement stop” button, the “single measurement” button, the “transfer” button, the “confirm” button, the measurement module control command description included in the display screen of FIG. Each of the text fields is displayed based on the “down7.class” distributed measurement device control Java applet, and the measurement data display field is “GraphCanva”.
s. class "is displayed based on the measured data processing Java applet.

Measurement module 5 in distributed measurement device 50
2 operates based on the measurement module command transferred from the measurement control server processing unit 56. The above-described distributed measurement device control Java applet is used for the measurement control device 10.
To the measurement control server processing unit 56 in the distributed measurement device 50
, One or more measurement module control commands can be transferred. The one or more measurement module control commands are referred to as a measurement module control command group for convenience. The user inputs the measurement module control command group by operating the keyboard in the measurement module control command description text field in the display screen shown in FIG. The input measurement module control command group is stored in the memory 1 under the control of the processor 12.
4 is stored.

The measurement control device 10 can transfer the measurement module control commands input by the user to the distributed measurement device 50 in this manner. For example,
When the “Transfer” button in the display screen shown in FIG. 4 is clicked by operating the pointing device 20, the measurement control device 10 transfers the measurement module control command group stored in the memory 14 to the distributed measurement device 50. I do. The operation of the measurement control device 10 when the “Transfer” button included in the display screen is clicked is described in advance in the distributed measurement device control applet. According to this description, a) the measurement control server processing unit 5 of the distributed measurement device 50
Then, a request for transmitting a group of measurement module control commands is transmitted to socket 6 using socket communication, and b) the group of measurement module control commands is transferred to the measurement control server processing unit 56 of the distributed measurement apparatus 50 using socket communication.

The measurement control server processing unit 56 of the distributed measurement device 50 corresponds to the operation of the measurement control device 10 described above.
a) A control command file for storing a group of measurement module control commands transferred from the measurement control device 10 is created in the memory 60 of the distributed measurement device 50, and b) Measurement transferred from the measurement control device 10 by socket communication. Measurement control server processing section 56
Receives and stores the received character string in the control command file. The measurement control device 10 controls the H of the distributed measurement device 50
The stored control command file can be accessed through the TTP server processing unit 54.

FIG. 6 is a cross-correlation diagram of the HTTP server processing unit 54 and the measurement control server processing unit 56 of the measurement control device 10 and the distributed measurement device 50. In this cross-correlation diagram, time flows from top to bottom. In FIG. 6, the measurement control device 1 is indicated by a rectangle and a vertical line described as the measurement control device.
The presence of 0 is indicated. As time goes down along the vertical line, the operation order of the corresponding measurement control device 10 is shown. The rectangle inside the vertical line connected to the rectangle described as the measurement control device indicates the operation of the measurement control device 10, and the description content on the right side of the rectangle indicates the type of operation. . In the case where another rectangle is shown overlapping the rectangle, it indicates that the operation of the rectangle overlapping above is activated among the operations indicated by the rectangle below. A horizontal line indicated by an arrow indicates that a message is transferred in the direction of the arrow (in this example, a message that crosses the separation boundary between the measurement control device 10 and the separation-type measurement device 50 is transmitted via the computer network 90). Communicated and forwarded).

For example, in the measurement module control command description text field of FIG. 4, ": SWE: POINT
301;: FREQ: START 40MHZ;: F
REQ: STOP250MHZ; RETURNDAT
A; ENDSEQUENCE; "is transmitted to the measurement control device 10." Operation text field writing "is transmitted to the measurement control device 10. The measurement control device 10 stores the input character string in the memory (buffer) 14. Here, the above is described. "RETUR" is included in the measurement module control command described in the measurement module control command description text field.
“NDATA” means that the measurement is performed by the measurement module 52 and the measurement data is transferred to the measurement control device 10. “ENDSEQUENCE” means that the measurement module control command group ends. Then, when the “Transfer” button included in the display screen of FIG. 4 is clicked, “Transfer operation text field contents” is transmitted to the measurement control device 10, and the measurement control device 10 transmits the measurement control server of the distributed measurement device 50. A connection request for socket communication is transmitted to the processing unit 56.

The measurement control server processing unit 56 of the distributed measurement device 50 receives a connection request for socket communication transmitted from the measurement control device 10. This connection request is for requesting transmission of a group of measurement module control commands. Measurement control server processing unit 56 of distributed measurement device 50
Creates a file named “sequence.html” in the memory 60 of the distributed measurement device 50 in advance. If “sequence.html” already exists, the contents of the “sequence.html” file are cleared. The measurement control server processing unit 56 of the distributed measurement device 50 stores “sequence” in a memory address accessible by the HTTP server processing unit 54 of the distributed measurement device 50.
nce. html "file. The measurement control device 10 sets the measurement module control command group": SWE: POINT 301;: FR "stored in the memory 14.
EQ: START 40MHZ ;: FREQ: STOP
250MHZ; RETURNDATA; ENDSEQ
ENCE; ”is transmitted to the measurement control server processing unit 56 of the distributed measurement device 50 using socket communication. The measurement control server processing unit 56 of the distributed measurement device 50 transmits the measurement module control received from the measurement control device 10. Command group ":
SWE: POINT 301;: FREQ: START
40MHZ;: FREQ: STOP250MHZ; R
ETURNDATA; ENDSEQUENCE; "to" sequence. html ”file.

The “seq” stored in the distributed measurement device 50
uence. To check the “html” file from the measurement controller 10, the user clicks the “confirm” button in the display screen of the measurement controller 10. By this click, “read operation file” is transmitted to the measurement control device 10. The measurement control device 10 is an HTT of the distributed measurement device 50.
"Sequence.html" in the P server processing unit 54
Request a reference to a file.

Next, the HTTP server processing unit 54 of the distributed measurement device 50 provides the contents of “sequence.html” to the measurement control device 10. Then, the measurement control device 10 writes the transferred content into the buffer, and displays the buffer content in the measurement module control command display text field of the measurement control device 10.

The measurement control device 10 having read the distributed measurement device control hypertext can transmit an operation command to the measurement control server processing unit 56 of the distributed measurement device 50 using socket communication. For example, a “continuous measurement” button included in the display screen shown in FIG.
The operation command is activated by clicking the button, "Single measurement" button. The operation of the measurement control device 10 when each button is clicked with the pointing device 20 (for example, using a mouse) is described in advance in the distributed measurement device control jab applet.

When the “continuous measurement” button is clicked,
The specified measurement until the end of the measurement module control command group stored in the distributed measurement device 50 is repeated. "Stop continuous measurement" button. When the “continuous measurement” button is clicked, the continuous measurement of the distributed measurement device 50 is stopped. When the “single measurement” button is clicked, the designated measurement is performed only once until the measurement module control command group stored in the distributed measurement device 50 ends.

FIG. 7 shows the “continuous measurement” of the measurement control device 10.
Measurement control device 10 when button is clicked
7 is a cross-correlation diagram between the HTTP server processing unit 54 and the measurement control server processing unit 56 of the distributed measurement device 50. FIG. When the “continuous measurement” button is clicked after the “transfer” button is clicked while the screen shown in FIG. 4 is displayed on the measurement control device 10, the measurement control device 10 controls a continuous measurement called a thread. Create a thread (actually, a thread is created by browser means realized by the measurement control device 10).

The thread of the measurement control device 10 transfers the character string “start” to the measurement control server processing unit 56 of the distributed measurement device 50 using socket communication. The measurement control server processing unit 56 of the distributed measurement device 50 transmits “star” from the thread of the measurement control device 10 by socket communication.
When the character string “t” is received, the measurement module control command group “:” stored in the memory 60 of the distributed measurement device 50:
SWE: POINT 301;: FREQ: START
40MHZ;: FREQ: STOP250MHZ; R
ETURNDATA; ENDSEQUENCE; "
The character string in the range delimited by ";"
2 to the instruction queue. For example, ": SWE: PO
INT 301 "": FREQ: START 40MH
Z ”and the like are sequentially input to the instruction queue of the measurement module 52.“ RETU ”is included in the measurement module control command group.
When finding the character string “RNDATA”, the measurement control server processing unit 56 temporarily suspends the input of the measurement module control command group to the instruction queue, and causes the measurement module 52 to measure the object to be measured.

Next, the measurement control server processing section 56 confirms that the measurement module 52 has finished measuring the object to be measured, and acquires the measurement result from the measurement module 52. The measurement control server processing unit 56 converts the measurement data obtained by converting the measurement result into H
At a memory address accessible by the TTP server processing unit 54, it is stored under a predetermined name “test1.html”. The measurement control server processing unit 56 transmits a character string “ok” indicating the existence of the measurement data to the thread of the measurement control device 10 using the socket communication.

The thread of the measurement control device 10 has a predetermined name “test1.htm” in the distributed measurement device 50.
Send a request to transfer measurement data of l ″. Measurement control device 10
Reads “test1.html” from the distributed measurement device 50 and reads “GraphCanvas.j”.
Using "ava", the measurement data is displayed in the measurement data display field included in the display screen shown in FIG.
FIG. 5 is a diagram showing an example of a display screen on which measurement data is displayed in a measurement data field.

When the display of the measurement data in the measurement data display field is completed, the thread of the measurement control device 10 sends the word “conti” to the measurement control server processing unit 56 of the distributed measurement device 50 using socket communication. Send a column to signal the end of measurement data display. Distributed measuring device 50
The measurement control server processing unit 56 of “
When the character string “nti” is received, the reading of the temporarily interrupted measurement module control command group is resumed. When the measurement control server processing unit 56 finds the character string “RETURNDATA” in the measurement module control command group, Performs the action after finding the “RETURNDATA” string. However, if the “RETURNDATA” string is found,
For the second and subsequent times (N-th time), “testN.
html ". This is to make it possible to separate and store the generated measurement data when performing a plurality of measurements with one measurement module control command group. Thread of the measurement control device 10 Performs the operation after receiving the character string “ok” by socket communication from the measurement control server processing unit 56 of the distributed measurement device 50. The thread of the measurement control device 10 receives the character string “ok”. At the second and subsequent times (N-th time), the HTTP server processing unit 54 of the distributed measurement device 50 sends “testN. html ”
Request, and read “testN.html”. Thereafter, each time the character string “RETURNDATA” is found, the numerical part of the name for storing the measurement data is increased by one.

When the measurement control server processing unit 56 of the distributed measurement apparatus 50 reads the measurement module control command group and reads the character string “ENDSEQUENCE”, it recognizes that the measurement module control command group has ended. Then, the measurement control server processing unit 56 transmits the character string “end” to the thread of the measurement control device 10 using the socket communication. When the thread of the measurement control device 10 receives the character string “end” by the socket communication, it knows that the measurement module control command group stored in the distributed measurement device 50 has ended. The thread of the measurement control device 10 transmits the “start” character string to the measurement control server processing unit 56 of the distributed measurement device 50 again using socket communication, and transmits the measurement module control command group to the distributed measurement device 50 again. Is executed. The above-described operation is repeatedly executed by the thread of the measurement control device 10.

FIG. 9 shows a state where continuous measurement is being performed between the distributed measurement device 50 and the measurement control device 10.
Measurement control device 10 and distributed measurement device 50 when the user clicks the “continuous measurement stop” button with a mouse
HTTP server processing unit 54 and measurement control server processing unit 5
6 is a cross-correlation diagram.

When the user clicks the “continuous measurement stop” button with the mouse, the measurement control device 10 displays “Abort”.
The measurement control device 10 receives the character string “stop” indicating the discontinuation of the continuous measurement to the measurement control server processing unit 56 of the distributed measurement device 50 through socket communication, and receives the thread generated by the continuous measurement. The measurement control server processing unit 56 of the distributed measurement device 50 is ended.
Is a character string “st” from the measurement control device 10 through socket communication.
op ”is received, the operation of the measurement control server processing unit 56 is stopped, and the reading position of the measurement module control command group is reset to the first position of the measurement module control command group. The distributed measurement device 50 and the measurement control device 10 When continuous measurement is not performed between
0 transmits a character string “stop” indicating the stop of continuous measurement to the measurement control server processing unit 56 of the distributed measurement device 50 by socket communication. When the measurement control server processing unit 56 of the distributed measurement device 50 receives the character string “stop”, the reading position of the measurement module control command group is reset to the first position of the measurement module control command group.

FIG. 10 shows the HTTP server processing unit 5 of the measurement control device 10 and the distributed measurement device 50 when the “single measurement” button of the measurement control device 10 is clicked.
4 is a cross-correlation diagram between the measurement control server processing unit 4 and the measurement control server processing unit 56. FIG.

When the “single measurement” button is clicked after the “transfer” button included in the display screen shown in FIG. 4 is clicked, the measurement control device 10 creates what controls a single measurement called a thread. The thread of the measurement control device 10 transmits the character string “si” using the socket communication.
ngle "is transferred to the measurement control server processing unit 56 of the distributed measurement device 50. The measurement control server processing unit 56 of the distributed measurement device 50 receives the character string" single "from the thread of the measurement control device 10 by socket communication. Then, the measurement module control command group “: SWE: POINT 301; stored in the memory 60 of the distributed measurement device 50:
FREQ: START 40MHZ;: FREQ: ST
OP250MHZ; RETURNDATA; ENDSE
A character string in a range delimited by “;” of QUENCE; is input to the command queue of the measurement module 52. For example,
“: SWE: POINT 301”, “: FREQ: S
TART 40MHZ ”and the like are sequentially input to the instruction queue of the measurement module 52.

"RET" is added to the measurement module control command group.
When finding the "URNDATA" character string, the measurement control server processing unit 56 suspends the input of the measurement module control command group to the instruction queue, and causes the measurement module 52 to perform measurement of the object to be measured. Processing unit 5
6 confirms that the measurement module 52 has finished measuring the object to be measured, and obtains a measurement result from the measurement module 52. Then, the measurement control server processing unit 56 transmits the measurement data obtained by converting the measurement result to the HTTP server processing unit 54.
Is stored in a memory address that can be accessed under a predetermined name “test1.html”. Further, the measurement control server processing unit 56 transmits a character string “ok” indicating the existence of the measurement data to the thread of the measurement control device 10 using the socket communication.

The thread of the measurement control device 10 has a predetermined name “test1.html” in the distributed measurement device.
Of the measurement data is transmitted, and this “test1.h
tml ”is read from the distributed measurement device 50, and the read measurement data is read as“ GraphCanvas. jav
4 is displayed in the measurement data display field in the screen shown in FIG. 4. When the display of the measurement data in the measurement data display field is completed, the thread of the measurement control device 10 performs the distributed measurement using the socket communication. The character string “conti” is transmitted to the measurement control server processing unit 56 of the device 50 to notify the end of the measurement data display.

Upon receiving the character string "conti" by socket communication, the measurement control server processing unit 56 of the distributed measurement device 50 resumes reading of the temporarily interrupted measurement module control command group. The measurement control server processing unit 56 converts the character string “ENDSEQ” from the measurement module control command group.
When "ENCE" is read, it is recognized that the measurement module control command group has ended. Then, the measurement control server processing unit 56 uses the socket communication to execute the measurement control device 10
Sends the character string "end" to the thread. The thread of the measurement control device 10 transmits the character string “end” by socket communication.
Is received, it is known that the measurement module control command group stored in the distributed measurement device 50 has been completed. When the thread of the measurement control device 10 receives the character string “end” through the socket communication, it knows that the measurement module control command group stored in the distributed measurement device 50 has ended, and the single measurement control ends.

The measurement control server processing unit 56 of the distributed measurement device 50 converts the measurement result of the measurement target of the measurement module 52 into a data format that can be processed by the measurement data processing Java applet. Memory 6
Store to 0. Further, the measurement control server processing unit 56 of the distributed measurement device 50 stores the measurement data file in a memory address accessible by the HTTP server processing unit 54 of the distributed measurement device 50. For example, the measurement control server processing unit 56 of the distributed measurement device 50 converts the binary data, which is the result measured by the measurement module 52, into character string data, and stores it in the memory 60 as “test1.html”. The memory address for storing “test1.html” is a memory address that can be accessed by the HTTP server processing unit 50 of the distributed measurement device 50.
The name of the measurement data file is a name determined by the measurement control server processing unit 56 in advance.

FIGS. 11 and 12 show the dispersion type measuring device 5.
0 is a cross-correlation diagram between the thread generated by the measurement control device 10 and the HTTP server processing unit 54 and the measurement control server processing unit 56 of the distributed measurement device 50 when the measurement control device 10 displays the measurement data measured on the display. It is. When the measurement control server processing unit 56 of the distributed measurement device 50 notifies the thread of the measurement control device 10 of the existence of the measurement data, the thread of the measurement control device 10 starts displaying the measurement data. The thread of the measurement control device 10 acquires the measurement data from the HTTP server processing unit 56 of the distributed measurement device 50, and uses the measurement data processing Java applet to
The measurement data is displayed in the measurement data display field of the measurement control device 10.

For example, the thread is a distributed measuring device 50.
The character string “ok” indicating the existence of the measurement data is received from the measurement control server processing unit 56 through socket communication. This character string “ok” merely indicates that the measurement data exists in the distributed measurement device 50, and the measurement data “test”
1. html ”is not transferred to the measurement control device 10. Thereafter, the thread of the measurement control device 10 sends the measurement data“ test1. html ”is requested.

More specifically, the thread of the measurement control device 10 transmits the specified URL “http: //150.85.
233.25 / test1. html "is used to access the measurement data stored in the memory 60 of the distributed measurement device 50. The method of specifying this URL is described in advance in the distributed measurement device control Java applet. The hypertext is sent to the measurement module 5 by the measurement control server processor 56 of the distributed measurement device 50.
If the measurement of the object to be measured has been completed using Step 2, the measurement control server processing unit 56 has created it. The thread is sent from the HTTP server processing unit 54 of the distributed measurement device 50 to the HTTP server.
The measurement data “test1.html” is acquired using P. The operation of the thread up to this point is “down7.ja
va "Distributed Measurement Device Control Java Applet.

The measurement data “test1.html” transferred to the measurement control device 10 has a data amount, a data format, etc., in the measurement control server processing unit 5 of the distributed measurement device 50.
It was decided in 6. “GraphCanva” acquired by the measurement control device 10 from the distributed measurement device 50
s. Java "measurement data processing Java applet
The method of processing the measurement data defined by the measurement control server processing unit 56 of the distributed measurement device 50, here, “the measurement data amount and the measurement data in the measurement data format defined by the distributed measurement device 50 Display in measurement data display field ". That is, the measurement control device 10 corresponding to the data amount and data format of the measurement data.
Is provided from the distributed measurement device 50 to the measurement control device 10.

As described above, in the measurement system of the present embodiment, the control of the distributed measurement device 50 by the measurement control device 10 is performed using the web technology, and the measurement control device 10 Based on the measurement control Java applet and the measurement data processing Java applet provided from the HTTP server processing unit 54, various controls and processes for the distributed measurement apparatus 50 can be performed. Therefore, the measurement control device 10 does not need a measurement control program, and can save time and effort in creating a measurement control program corresponding to each device. Also,
The measurement control server processing unit 56 of the distributed measurement device 50 can start measurement or the like based on various commands sent from the measurement control device 10, and can automate measurement.

As described above, according to the measurement system of this embodiment, (1) in the computer control of the distributed measurement device, the protocol corresponding to the computer network is used for the connection between the distributed measurement device and the computer. In addition, various measurements using a plurality of computers can be flexibly realized. (2) By using the distributed measurement device that provides the measurement control program, the distributed test device connected to the computer network can be controlled from another computer connected to the computer network. At this time, once the distributed measuring device stores the Java applet for controlling the distributed measuring device, other users do not need to reprogram, and can perform the measurement simply by downloading the applet. (3) Conventionally, when controlling a measuring device from a computer, a control program dedicated to the measuring device to be controlled and a driver for controlling the measuring device had to be prepared on the computer side. By controlling the test equipment with
The measuring device can be controlled from a computer in a general and simple way.

[0065]

As described above, according to the present invention, the measuring apparatus is provided with the first server means, and the first server means provides the measurement control program and the measurement data processing program to the measurement control apparatus. Thus, predetermined control operations and processing operations can be performed without creating these programs on the measurement control device side. In addition, by providing the measuring device with a second server unit that performs a control operation in accordance with a command sent from the measuring control device, it is possible to perform various controls such as starting measurement of the measuring device from the measuring control device. Become.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration of a distributed measurement system according to an embodiment.

FIG. 2 10 Bass as a computer network
FIG. 2 is a diagram illustrating a configuration example of a measurement system using an e-T Ethernet.

FIG. 3 10 Bass as a computer network
FIG. 2 is a diagram illustrating a configuration of a 10Base-T Ethernet board that realizes a network interface unit when using an e-T Ethernet.

FIG. 4 is a diagram showing an example of a graphical display screen when reading of a distributed measurement device control hypertext from a distributed measurement device by a measurement control device realized by a personal computer.

FIG. 5 is a diagram showing a specific example of a distributed measurement device control hypertext.

FIG. 6 is a cross-correlation diagram of an HTTP server processing unit and a measurement control server processing unit of the measurement control device and the distributed measurement device.

FIG. 7 shows H of the measurement control device and the distributed measurement device when the “continuous measurement” button of the measurement control device is clicked.
It is a cross-correlation diagram of a TTP server processing part and a measurement control server processing part.

FIG. 8 is a diagram illustrating an example of a graphical display screen in which measurement data is displayed in a measurement data display field.

FIG. 9 shows a state in which continuous measurement is performed between the distributed measurement device and the measurement control device, and the measurement control device and the distributed type when the user clicks the “continuous measurement stop” button with a mouse. FIG. 4 is a cross-correlation diagram of an HTTP server processing unit and a measurement control server processing unit of the measurement device.

FIG. 10 is a cross-correlation diagram of the HTTP server processing unit and the measurement control server processing unit of the measurement control device and the distributed measurement device when the “single measurement” button of the measurement control device is clicked.

FIG. 11 illustrates a thread generated by the measurement control device and the HTT of the distributed measurement device when the measurement control device displays measurement data measured by the distributed measurement device on a display.
It is a cross-correlation diagram of a P server processing part and a measurement control server processing part.

FIG. 12 shows a thread generated by the measurement control device and the HTT of the distributed measurement device when the measurement control device displays measurement data measured by the distributed measurement device on a display.
It is a cross-correlation diagram of a P server processing part and a measurement control server processing part.

[Explanation of symbols]

 Reference Signs List 10 measurement control device 12, 58 processor 14, 60 memory 16, 62 display 18, 64 I / O device 20, 66 pointing device 22, 68 network interface unit 50 distributed measurement device 52 measurement module 54 HTTP server processing unit 56 measurement control Server processing unit 90 Computer network

Claims (6)

[Claims] 1. A measurement system comprising: a measurement device that performs a predetermined measurement operation; and a measurement control device that is connected to the measurement device via a predetermined network and controls the measurement device. Transmitting and receiving data between the measurement control device and the measurement control device using a web technology. 2. A measurement system comprising: a measurement device that performs a predetermined measurement operation; and a measurement control device that is connected to the measurement device via a predetermined network and controls the measurement device. Comprises first server means for providing a measurement control program that can be used by the measurement control device, wherein the measurement control device is configured based on the measurement control program sent from the first server means. A measuring system for controlling a measuring operation by the measuring device. 3. The measurement method according to claim 2, wherein the first server unit provides the measurement control device with a measurement data processing program corresponding to measurement data obtained by a measurement operation performed by the measurement device. system. 4. The measurement device according to claim 2, wherein the measurement device receives a command sent from the measurement control device that has read the measurement control program,
A measuring system, comprising: a second server for controlling the measuring device according to the command. 5. The measurement system according to claim 2, wherein the measurement control device corresponds to a web browser, and the server means in the measurement device corresponds to a web server. 6. The program according to claim 2, wherein the program and data provided from the first server to the measurement control device have a hypertext format. URL (Universal Resource Loc)
), the hypertext of the measuring device is specified, and the HTTP (Hyper Text Transform Pro
tocol) to obtain the specified hypertext.