JP2008310619A - Data processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data processor allowing acquisition of measurement data from a plurality of measurement devices during measurement via a network even without the knowledge for creating a communication program, and allowing data processing (calculation between pieces of the measurement data). <P>SOLUTION: This data processor is a data processor wherein improvement is added to a data processor connected with the plurality of measurement devices via the network, performing the calculation by the measurement data measured by the respective measurement devices. The data processor has: an input part inputting an arithmetic expression for performing the calculation; and a generation part generating the communication program making the measurement device designated by the arithmetic expression of the input part transmit the measurement data. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a data processing apparatus that is connected to a plurality of measuring instruments via a network and performs an operation on the measurement data measured by each of the measuring instruments, and more particularly, without knowledge of creating a communication program, via a network. The present invention relates to a data processing apparatus capable of acquiring measurement data from a plurality of measuring instruments being measured and performing data processing (calculation between measurement data).

  When performing performance tests on automobiles, fuel cells, motors, inverters, etc., the number of measurement points is very large, and one measuring device (for example, a wattmeter) does not have enough elements. In such a case, measurement is performed using a plurality of measuring instruments, and measurement data from each measuring instrument is collected in a data processing personal computer and processed to obtain power, impedance, conversion efficiency, and the like. One element includes a voltage measurement circuit and a current measurement circuit, and the power is also obtained by measuring the voltage and the current in synchronization. A single measuring instrument is mounted with a plurality of elements (for example, four elements) (see, for example, Patent Document 1).

  FIG. 5 is a flowchart showing a conventional operation when data processing is performed using a plurality of measuring instruments.

  Measurement data is collected by performing predetermined measurements with each measuring instrument (S10), and the measurement data of each measuring instrument is converted into a file and stored in a portable storage medium (for example, a USB memory) (S11). . Then, all the files saved in the storage medium are copied to the hard disk in the personal computer (S12), files necessary for calculation are opened with spreadsheet software, necessary measurement data is extracted, calculation is performed, and data processing is performed (S13). .

  FIG. 6 is a flowchart showing a conventional operation when a plurality of measuring instruments and a personal computer are connected via a network and data processing of measurement data from each measuring instrument is performed (see, for example, Patent Document 2).

  A user creates a dedicated communication program (a program for communicating with a measuring instrument and transmitting measurement data) (S20). On the other hand, each measuring device collects measurement data (S21). Then, the program is executed on the personal computer to cause each measuring instrument to transmit the measurement data to the personal computer (S22), and the measurement data received by the personal computer is converted into a file and copied to the hard disk in the personal computer (S23). Further, a file necessary for calculation is opened with spreadsheet software, and necessary measurement data is extracted and calculation is performed for data processing (S24).

JP 2006-098111 A Japanese Patent Laid-Open No. 05-118886

  Even if the number of measurement points to be measured is large, it is possible to perform data processing by performing a desired calculation by performing measurement using a plurality of measuring devices and collecting measurement data of each measuring device in a personal computer.

  When the measurement data of each measuring instrument is stored in a storage medium and copied to a personal computer, it is necessary to attach the storage medium in order for each measuring instrument and store the measurement data in the storage medium. A general measurement cycle with a power meter or the like is several hundreds [ms] to several [s], but it is impossible to copy measurement data of each measuring instrument to a personal computer in this measurement cycle. Data processing could not be performed during the test. For this reason, it is difficult to check the measurement data and the data processing result by performing data processing during the measurement, and there is a problem that work efficiency is poor.

  On the other hand, when the measurement data is transferred to the personal computer by communication, the measurement data can be transferred to the personal computer every time each measuring instrument collects the measurement data, and the measurement data can be processed almost in real time. For example, if the measurement cycle is about 500 [ms], measurement data can be transmitted to and received from the personal computer with the same 500 [ms] cycle as the measurement cycle.

  However, in order to create a dedicated communication program, first of all, it is necessary to understand a general-purpose program language (for example, C language) itself, and there is a problem that specialized knowledge about the program language is required.

  Also, unlike direct operation of the measuring instrument operation panel, it is necessary to send a command dedicated to the measuring instrument to the measuring instrument. For example, a command that simply sends measurement data to the personal computer (for example, “Num: Value ?)), The command format differs for each manufacturer, and even for the same manufacturer, it depends on the model. For this reason, there is a problem that specialized knowledge about commands is required.

  Furthermore, it is necessary to understand a protocol for communicating between a personal computer and a measuring instrument, and specialized knowledge about this is also required. Usually, a communication interface function, so-called control API (Application Programming Interface) is provided by the manufacturer of the communication interface. For example, in the case of GPIB, "iopen ()", "iwrite ()" Etc.) are different from those prepared by default in general-purpose programming languages. Therefore, there is a problem that specialized knowledge about each API is required.

  Therefore, there is a problem in that it takes time and cost to create a communication program when communicating with a measuring instrument to acquire measurement data and perform data processing.

  Therefore, an object of the present invention is to obtain data that can be measured and processed (calculation between measurement data) from a plurality of measuring instruments being measured via a network without knowledge of creating a communication program. It is to realize a processing apparatus.

The invention described in claim 1
In a data processing apparatus that is connected to a plurality of measuring instruments via a network and performs an operation on measurement data measured by each of the measuring instruments,
An input unit for inputting an arithmetic expression for performing the operation;
And a generation unit that generates a communication program that causes the measuring instrument specified by the arithmetic expression of the input unit to transmit the measurement data.
The invention according to claim 2 is the invention according to claim 1,
A first memory for storing a model of a measuring instrument connected to the network and a type of a communication interface of the network;
A second memory for storing a command for each measuring instrument;
A third memory for storing an API for each communication interface of the network, and the generation unit includes:
An analysis unit that analyzes a model of a measuring instrument that performs transmission with reference to the arithmetic expression and the first memory, and a communication interface;
Based on the analysis result of the analysis unit, a command generation unit that reads a command corresponding to the model of the measuring instrument from the second memory;
A program generation unit that reads an API corresponding to the communication interface from the third memory based on an analysis result of the analysis unit, and generates a communication program in combination with a command of the command generation unit; To do.

The present invention has the following effects.
The generation unit generates a communication program that causes the measuring instrument specified in the arithmetic expression input from the input unit to transmit measurement data. Thus, the user only has to input an arithmetic expression, and even if the user has no knowledge of creating a communication program, measurement data is acquired from a plurality of measuring instruments via a network in the state of measurement, and data processing ( (Calculation between measurement data specified by an arithmetic expression) can be performed. Therefore, the data processing result can be confirmed immediately even during measurement, and the work efficiency is improved. In addition, the cost and time for developing a dedicated communication program can be reduced.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing an embodiment of the present invention.
In FIG. 1, measuring instruments Ma to Md measure a measurement target under preset measurement conditions (measurement range, measurement period, etc.), and repeatedly acquire measurement data at the set measurement period. The personal computer PC is a data processing device, and communicates with a plurality of measuring instruments Ma to Md via a general-purpose signal line (for example, GP-IB cable) 100 to exchange data. Each of the measuring instruments Ma to Md is connected by a dedicated line 200 different from the network 100, and performs measurement while synchronizing each measuring instrument Ma to Md.

  The personal computer PC includes memories 10 to 13, an input unit 14, an arithmetic expression analysis unit 15, a command generation unit 16, a program generation unit 17, an execution unit 18, a calculation unit 19, and a communication unit 20.

  The first memory 10 is a database for measuring instrument information, and information on the measuring instruments Ma to Md connected to the network 100 (for example, model names of measuring instruments connected to the network, built in these measuring instruments) The number of elements to be processed, the measurement conditions of each element, etc.), the type of communication interface of the signal line 100, and the like are stored.

  The second memory 11 is a database for commands, and stores a communication command (for example, a command for transmitting measurement data of a designated element) for each measuring instrument.

  The third memory 12 is a communication API database, and stores an API for controlling the communication interface (a unique API provided for each GPIB manufacturer).

  The fourth memory 13 stores files such as measurement data and calculation result data processing results. Although the memories 10 to 13 are illustrated separately in FIG. 1, they may be physically the same memory, for example, a hard disk of a personal computer.

  The input unit 14 is a keyboard, a mouse, or the like, and an arithmetic expression for data processing is input by the user.

  The analysis unit 15 refers to information on the measuring device in the memory 10 and analyzes the arithmetic expression of the input unit 14.

  Based on the analysis result, the command generation unit 16 reads from the memory 11 a command (command for transmitting measurement data) corresponding to the measuring instrument to be controlled.

  The program generation unit 17 receives a command from the command generation unit 16, reads a communication API corresponding to the communication interface based on the analysis result of the analysis unit 15, combines the command with the command, and transmits measurement data to the personal computer PC. Create a communication program.

  Here, the analysis unit 15, the command generation unit 16, and the program generation unit 17 constitute a generation unit of claims.

  The execution unit 18 executes the communication program, transmits a command to each of the measuring devices Ma to Md via the communication unit 20, acquires the measurement data, and stores the acquired measurement data as a file in the memory 13.

  The calculation unit 19 reads a file from the memory 13 according to an instruction from the execution unit 18, calculates measurement data using the calculation formula analyzed by the analysis unit 15, and stores the calculation result in the memory 13.

  Communication unit 20 communicates with measuring instruments Ma to Md according to instructions from execution unit 18 to exchange data.

The operation of such an apparatus will be described.
Before starting the measurement, the personal computer PC and measuring instruments Ma to Md are connected by GPIB100. In addition, each of the measuring devices Ma to Md is connected to a measurement point to be measured, measurement conditions (measurement period (for example, 500 [ms]), measurement range, etc.) are set, and measurement is started. Each measuring device Ma to Md exchanges a synchronization signal on the dedicated line 200 to synchronize and repeatedly measure at a predetermined measurement period, and collect measurement data (for example, current, voltage, power, etc.) in time series. To do.

  Then, the measuring instrument information database 10 in the memory 10 stores the models (models) of the measuring instruments Ma to Md, measuring conditions, communication interface information, and the like. The information of the communication interface includes the type of the signal line 100, the manufacturer name of the communication unit 20 corresponding to the signal line (for example, GPIB) 100, the identification information (for example, GPIB address) of the measuring devices Ma to Md, and the like. . Setting these ends the initial setting.

  In addition, when the calculation is performed using the measurement data measured by the measuring devices Ma to Md having different measuring accuracy and accuracy, the measuring devices Ma to Md are the same manufacturer because they are affected by the model having the lowest measuring accuracy and accuracy. It should be of the same model.

  Here, FIG. 2 is a flowchart for explaining the operation of the apparatus shown in FIG. FIG. 3 is a diagram showing an example of measurement data measured by the measuring instrument Ma. In FIG. 3, the measuring instrument Ma includes three elements, and each element measures current and voltage to obtain power. The measurement data for the current, voltage, and power of the first element are “E1a”, “E1u”, and “E1w”, and the measurement data for the current, voltage, and power of the second element are “E2a” and “E2u”. , “E2w”. The same applies to the third.

  An arithmetic expression (user-defined expressions 1 and 2 in FIG. 2) is input from the input unit 14. For example, the user-defined formula 1 is for obtaining an added value of power [W], and the user-defined formula 2 is for obtaining efficiency [%]. Here, for specifying the measuring instruments Ma to Md, elements, and data types (current, voltage, power, etc.) to be connected, the analysis unit 15 displays the information in the memory 10, and the user selects them from the operators. A device may be input (S30).

  The analysis unit 15 extracts each of the measurement data described in the calculation formula while performing reverse Polish conversion to facilitate the calculation in the calculation unit 19, and the measuring devices Ma to Md and element numbers corresponding to the measurement data Is analyzed. For example, the definition formula 1 analyzes that the measurement data E1w of the power of the element 1 of the measuring device Ma and the measurement data E2w of the power of the element 2 of the measuring device Mb are necessary. Further, the analysis unit 15 reads out the model information of each of the measuring instruments Ma to Md and the type of the communication interface with the measuring instruments Ma to Md from the database of the memory 10 (S31).

  Then, based on the model information of the measuring instruments Ma to Md from the analyzing unit 15, the command generating unit 16 reads a command (command for transmitting measurement data) corresponding to the model of the measuring instrument from the database of the memory 11. (S32).

  Further, the program generation unit 17 reads out an API corresponding to the communication interface from the database of the memory 12 based on the information of the communication interface from the analysis unit 15 (S33), and combines the command with the command of the command generation unit 16 to obtain a communication program. Is generated (S34).

  Then, the execution unit 18 executes the program of the program generation unit 17 and transmits a command to each measuring device Ma to Mb via the communication unit 20. Receiving this command, each of the measuring devices Ma to Md returns the latest measurement data to the personal computer (S36).

  And the execution part 18 receives the measurement data from each measuring device Ma-Md via the communication part 20. FIG. The received measurement data is converted into a file and stored in the memory 13. Note that newly acquired measurement data is added to an existing file (S37).

  Then, the arithmetic unit 19 executes the arithmetic expression reverse-Polish-transformed by the analyzing unit 15 based on a signal indicating that the measurement data has been received from the executing unit 18. That is, the file in the memory 13 is opened according to the arithmetic expression, and the calculation is performed using the measurement data in this file. After the calculation, the calculation result and measurement data are displayed on a display unit (not shown), or the calculation result is converted into a file and stored in the memory 13 (S39).

  A command for transmitting measurement data after receiving data indicating that new measurement data has been collected from the measurement devices Ma to Md based on the measurement cycle of the measurement devices Ma to Md or performing polling when continuing measurement. Transmission, reception of measurement data, calculation, etc. (S40, S36 to S39). When the measurement is finished, the program execution is stopped and the data processing is finished (S40).

  Here, FIG. 4 is a diagram illustrating an example of data of a calculation result file. The calculation results of the user-defined equations 1 and 2 calculated from the measurement data for each measurement time are stored.

  In this way, an arithmetic expression is input from the input unit 14, and the generation unit (analyzing unit 15, command generation unit 16, program generation unit 17) determines the measuring instruments Ma˜ specified in the arithmetic expression input by the input unit 14. A communication program that causes Md to transmit measurement data is generated. Thus, the user only has to input an arithmetic expression, and even if the user has no knowledge of creating a communication program, the measurement data is acquired from a plurality of measuring instruments Ma to Md being measured via the network 100 and processed. (Calculation between measurement data specified by an arithmetic expression) can be performed. Therefore, the data processing result can be confirmed immediately even during measurement, and the work efficiency is improved. In addition, the cost and time for developing a dedicated communication program can be reduced.

The present invention is not limited to this, and may be as shown below.
(1) Although the configuration using a wattmeter is shown as an example of the measuring devices Ma to Md, any measuring device may be used, for example, a digital oscilloscope, a spectrum analyzer, a multimeter, or the like.

(2) Although a configuration in which four measuring instruments are connected to a personal computer is shown, any number of measuring instruments may be connected, and any signal line may be used instead of a GIPB cable, and wireless may be used instead of wired. .

It is the block diagram which showed one Example of this invention. It is a flowchart explaining operation | movement of the apparatus shown in FIG. It is the figure which showed an example of the measurement data of the measuring device Ma shown in FIG. It is the figure which showed an example of the calculation result of personal computer PC shown in FIG. It is the flowchart explaining an example of operation | movement of the conventional data processor. It is the flowchart explaining another example of operation | movement of the conventional data processor.

Explanation of symbols

10 to 13 Memory 14 Input unit 15 Analysis unit 16 Command generation unit 17 Program generation unit 100 General-purpose signal line (GPIB cable)
Ma to Md measuring instrument

Claims (2)

In a data processing apparatus that is connected to a plurality of measuring instruments via a network and performs an operation on measurement data measured by each of the measuring instruments,
An input unit for inputting an arithmetic expression for performing the operation;
A data processing apparatus comprising: a generation unit that generates a communication program that causes the measuring instrument specified by the arithmetic expression of the input unit to transmit the measurement data. A first memory for storing a model of a measuring instrument connected to the network and a type of a communication interface of the network;
A second memory for storing a command for each measuring instrument;
A third memory for storing an API for each communication interface of the network, and the generation unit includes:
An analysis unit that analyzes a model of a measuring instrument that performs transmission with reference to the arithmetic expression and the first memory, and a communication interface;
Based on the analysis result of the analysis unit, a command generation unit that reads a command corresponding to the model of the measuring instrument from the second memory;
A program generation unit that reads an API corresponding to the communication interface from the third memory based on an analysis result of the analysis unit, and generates a communication program in combination with a command of the command generation unit; The data processing apparatus according to claim 1.

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