Measurement apparatus, measurement method, and program

Abstract

To provide a measuring device for improving the convenience of the measuring device when a user uses the measuring device.SOLUTION: A measuring device 10 for acquiring measurement data includes a control part 16, and the control part 16 previously generates a measurement data buffer for holding virtual data to the acquired measurement data, and generates and outputs total measurement data including the measurement data and the virtual data held in the measurement data buffer when acquiring the measurement data.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a measurement device, a measurement method, and a program. [Background technology]

[0002] 2. Description of the Related Art Conventionally, measurement devices that acquire measurement data are known. For example, Patent Document 1 discloses a test measurement system that enables effective signal analysis of an input signal. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2024-000997 Summary of the Invention [Problem to be solved by the invention]

[0004] Prior art, including the technology described in Patent Document 1, did not sufficiently consider the real-time comparison of currently acquired measurement data with other measurement data, including measurement data acquired in the past, etc. This left room for improvement in the convenience of the measurement device when a user uses it.

[0005] The present disclosure aims to provide a measurement device, a measurement method, and a program that improve the convenience of the measurement device when a user uses the measurement device. [Means for solving the problem]

[0006] In some embodiments, a measurement device acquires measurement data and includes a control unit. The control unit pre-generates a measurement data buffer that stores virtual data for the acquired measurement data, and upon acquiring the measurement data, generates and outputs total measurement data that includes the measurement data and the virtual data stored in the measurement data buffer.

[0007] This improves the convenience of the measurement device when the user uses it. The measurement device generates a measurement data buffer in advance that stores virtual data for acquired measurement data. Therefore, the measurement device can refer to other measurement data in real time for the latest measurement data. Unlike conventional measurement devices that store measurement data in an electronic file and then perform calculations later, the measurement device can perform calculations in real time when the latest measurement data is acquired. By enabling real-time calculations within a single device, the measurement device can shorten the analysis time for users of the measurement device. The measurement device can also simultaneously process the latest measurement result and multiple comparison measurement results, making it possible to perform multiple comparisons and analyses in a single measurement.

[0008] In one embodiment, the control unit may acquire the measurement data by a primary calculation, and execute a secondary calculation using the acquired measurement data and the virtual data.

[0009] As a result, the measurement device can store virtual data for assisting comparison and analysis in a measurement data buffer in addition to the measurement data updated by the device itself, allowing it to perform secondary calculations in real time using other measurement data with different time series from the latest measurement data together with the latest measurement data. For example, the measurement device can simultaneously load multiple types of measurement data and perform secondary calculations in real time using the latest measurement data together with at least one previous measurement data in a single measurement. Because the measurement device performs secondary calculations using the measurement results and the measurement results to be compared, unlike conventional technology, there is no need to follow the procedure of transferring the measurement data to an information processing device, loading it with an application, and executing the secondary calculation. The measurement device can output the results of the secondary calculations together with the latest measurement results by itself.

[0010] In one embodiment of the measuring device, the control unit may set the content of the measurement data to be substituted for the virtual data based on a selection input received from a user. This allows the measuring device to appropriately select and set the measurement data required by the user of the measuring device from among multiple types of measurement data that can be compared with the latest measurement data. A single measuring device can also handle the reading of multiple types of measurement data. Because the measuring device has a method of selecting past measurement data to be used as a basis for comparison and analysis and substituting it into virtual data in a measurement data buffer, more evaluations or verifications can be performed with a single device.

[0011] In one embodiment of the measurement device, the control unit may individually set the content of the measurement data to be substituted for the virtual data held in each of the multiple measurement data buffers. This allows the measurement device to individually select the content of the measurement data to be substituted for the virtual data in the measurement data buffer, making it possible for a single device to set a variety of measurement data for comparison that a user requires. Because the content of the measurement data for the measurement data buffer is selectable, the measurement device can be easily expanded and can more easily respond to new user requests.

[0012] In one embodiment, the control unit may stop measurement using a hold function of the measurement device and copy the last measurement data updated as the virtual data. This allows the measurement device to set the measurement data held in the measurement data buffer based on the hold function as a comparison target for the latest measurement data. The measurement device can also perform comparison and analysis of the latest measurement data in a single measurement while referring to the measurement data held in the measurement data buffer based on the hold function.

[0013] In one embodiment, the control unit may read from the storage medium the total measurement data stored in the storage medium by a storage function of the measurement device, and generate the virtual data based on the read total measurement data. This allows the measurement device to set the measurement data held in the measurement data buffer based on the storage function as a comparison target for the latest measurement data. The measurement device can also perform comparison and analysis of the latest measurement data in a single measurement while referring to the measurement data held in the measurement data buffer based on the storage function.

[0014] In one embodiment, the control unit of the measurement device may read specified total past measurement data from a specific store file stored in the storage medium based on setting information previously specified by a user, and copy specified measurement data or virtual data from the total past measurement data as the virtual data. This allows the measurement device to set the previous measurement data specified by the user as a comparison target for the latest measurement data. The measurement device can also perform comparison and analysis of the latest measurement data in a single measurement while referring to the previous measurement data specified by the user.

[0015] In one embodiment, the control unit may copy the measurement data previously measured and updated by the measurement device as the virtual data. This allows the measurement device to set the previously measured and updated measurement data as a comparison target for the latest measurement data. The measurement device can also perform comparison and analysis of the latest measurement data in a single measurement while referring to the previously measured and updated measurement data.

[0016] A measurement method according to some embodiments is a measurement method for acquiring measurement data, which includes: generating in advance a measurement data buffer for holding virtual data for the acquired measurement data; and, upon acquiring the measurement data, generating and outputting total measurement data including the measurement data and the virtual data held in the measurement data buffer.

[0017] This improves the convenience of the measurement device when the user uses it. The measurement device executing the measurement method generates a measurement data buffer in advance to store virtual data for acquired measurement data. Therefore, the measurement device can refer to other measurement data in real time for the latest measurement data. Unlike conventional measurement devices that store measurement data in an electronic file and then perform calculations later, the measurement device can also perform calculations in real time when the latest measurement data is acquired. By enabling real-time calculations within a single device, the measurement device can shorten the analysis time for users using the measurement device. The measurement device can also simultaneously process the latest measurement result and multiple comparison measurement results, allowing multiple comparisons and analyses to be performed in a single measurement.

[0018] In some embodiments, the program causes a measurement device that acquires measurement data to perform operations including: generating in advance a measurement data buffer that holds virtual data for the acquired measurement data; and, upon acquiring the measurement data, generating and outputting total measurement data that includes the measurement data and the virtual data held in the measurement data buffer.

[0019] This improves the convenience of the measurement device when the user uses it. The measurement device generates a measurement data buffer in advance that stores virtual data for acquired measurement data. Therefore, the measurement device can refer to other measurement data in real time for the latest measurement data. Unlike conventional measurement devices that store measurement data in an electronic file and then perform calculations later, the measurement device can perform calculations in real time when the latest measurement data is acquired. By enabling real-time calculations within a single device, the measurement device can shorten the analysis time for users of the measurement device. The measurement device can also simultaneously process the latest measurement result and multiple comparison measurement results, making it possible to perform multiple comparisons and analyses in a single measurement. [Effects of the Invention]

[0020] According to a measurement device, a measurement method, and a program according to an embodiment of the present disclosure, the convenience of the measurement device when a user uses the measurement device is improved. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a block diagram illustrating an example of a configuration of a measurement system including a measurement device according to an embodiment of the present disclosure. [Figure 2] 2 is a flowchart illustrating an example of a measurement method executed by the measurement device of FIG. [Figure 3] FIG. 2 is a first schematic diagram for explaining an example of the operation of the measurement device of FIG. [Figure 4] 1. FIG. 4 is a second schematic diagram for explaining an example of the operation of the measurement device of FIG. [Figure 5A] 1. FIG. 4 is a third schematic diagram for explaining an example of the operation of the measurement device of FIG. [Figure 5B] 1. FIG. 4 is a fourth schematic diagram for explaining an example of the operation of the measurement apparatus of FIG. [Figure 6] 10 is a first flowchart illustrating an example of an operation executed by the measurement device of FIG. [Figure 7] FIG. 5 is a fifth schematic diagram for explaining an example of the operation of the measurement device of FIG. [Figure 8A] 1. FIG. 6 is a sixth schematic diagram for explaining an example of the operation of the measurement device of FIG. [Figure 8B] 1. FIG. 7 is a seventh schematic diagram for explaining an example of the operation of the measurement device of FIG. [Figure 9] 10 is a second flowchart illustrating an example of an operation executed by the measurement device of FIG. [Figure 10A] 1. FIG. 8 is an eighth schematic diagram for explaining an example of the operation of the measurement device of FIG. [Figure 10B] FIG. 9 is a ninth schematic diagram for explaining an example of the operation of the measurement device of FIG. [Figure 10C] FIG. 19 is a tenth schematic diagram illustrating an example of the operation of the measurement device of FIG. [Figure 11] 10 is a third flowchart illustrating an example of an operation executed by the measurement device of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0022] The background and problems of the prior art will now be described in more detail.

[0023] Conventionally, in research, development, and production of electrical products, it is expected that measurement data acquired by a measuring device such as a power analyzer is compared and analyzed with other measurement data, such as past measurement data, for evaluation or verification. For example, it is expected that measurement data acquired by a measuring device that is normally used in the past is used as a reference, and that measurement data acquired by a measuring device to be produced in the future as a product under test is evaluated to ensure that it falls within a certain range relative to the reference. For example, it is also expected that measurement data acquired by a measuring device that has experienced an abnormality is compared with measurement data acquired by a normal measuring device to perform troubleshooting. For example, it is also expected that, for the comparison and analysis, secondary calculations are performed using both newly acquired measurement data and past measurement data acquired by the measuring device as the product under test.

[0024] Conventional measuring devices output measurement results as measurement data. "Output" by conventional measuring devices includes, for example, screen output to a display device such as a display provided in the measuring device. "Output" by conventional measuring devices includes, for example, electronic file output to the built-in memory of the measuring device or to an external storage medium communicatively connected to the measuring device. "Output" by conventional measuring devices includes, for example, data communication output to a terminal device communicatively connected to the measuring device.

[0025] The basic process flow from measurement by the measuring device to output in each output format is as follows.

[0026] First, the measuring device receives input signals, such as voltage and current signals to be measured. The measuring device converts the analog values ​​of the input signals into digital values ​​using an analog-to-digital (AD) converter. The measuring device acquires the digital sample values ​​as sampling data at each sampling rate. Based on the acquired sampling data, the measuring device generates measurement values ​​such as voltage, current, and power, harmonic analysis values, and waveform values, and stores them in a first built-in memory.

[0027] The measurement device then stores the power measurement values, harmonic analysis values, and waveform values ​​calculated by a CPU (Central Processing Unit) using the data stored in the first memory as part of the measurement data in a built-in second memory.The measurement device calculates the voltage and current phases and power factors, as well as the remaining power measurement values ​​and harmonic analysis values, from the measurement data such as the power measurement values ​​and harmonic analysis values ​​stored in the second memory, and adds them to the measurement data stored in the built-in second memory.

[0028] The measurement device performs a secondary calculation on the measurement data stored in the second memory, including a power efficiency calculation and a calculation based on a user-defined formula. The measurement device adds the data obtained by the secondary calculation to the measurement data stored in the built-in second memory to generate measurement data for one measurement update. In this way, the measurement device acquires the measurement data.

[0029] The terminal device detects through the application that the update of the measurement data has been completed via data communication with the measurement device. The terminal device then requests the measurement device to transmit the measurement data using a communication command via the application. The measurement device then transmits the measurement data stored in the built-in second memory to the terminal device.

[0030] Upon completion of updating the measurement data, the measurement device generates screen data using the measurement data stored in the built-in second memory and updates the screen displayed on the display device. If necessary, the measurement device manually or automatically stores the updated measurement data as an electronic file in an external storage medium.

[0031] The measurement device receives the input signal again and repeats the above measurement update process.

[0032] In the conventional general measuring devices described above, the measurement data indicating the measurement results includes only the most recent data based on the measurement update. The measurement data does not include a buffer for reading other measurement data, such as measurement data acquired in the past. Measuring devices that perform arithmetic processing in real time using measurement data acquired in real time by the measuring device itself as the measurement result and other measurement data have not been sufficiently considered in the past.

[0033] The following two methods can be considered for performing secondary calculations using past measurement data contained in electronic files stored in the past and the latest measurement data obtained through new measurements, and for comparison and analysis.

[0034] In the first method, the measurement device main body and a terminal device are connected so that they can communicate with each other, and a dedicated application is used on the terminal device to import the latest measurement data from the measurement device main body into the dedicated application and save it in an electronic file.The terminal device then loads the electronic file containing the stored latest measurement data and past measurement data into the dedicated application, and uses the application's calculation function to perform secondary calculations on the two measurement data, for comparison and analysis.

[0035] In the second method, the past measurement data and the latest measurement data are stored as electronic files on an external storage medium by the measurement device. The measurement device stores the electronic files in a general-purpose format, and then uses commercially available spreadsheet software or the like to read the past measurement data and the latest measurement data, and performs secondary calculations using the spreadsheet function or the like to compare and analyze them.

[0036] In both the first and second methods, calculations are not performed in real time by the measurement device, but rather the measurement data is first saved in an electronic file and then calculations are performed later by the measurement device or terminal device.

[0037] In order to analyze measurement data, a user may want to analyze the amount of change or deviation between successive measurements. For example, the following third method is known for calculating the amount of change between an arbitrary Nth measurement value and the immediately previous (N-1)th measurement value for the effective voltage value acquired by a measurement device as the product under evaluation, at each measurement update.

[0038] The third method is to use a terminal device to perform calculations using commercially available spreadsheet software or the like. For example, the measurement device uses a function for continuously storing measurement data (the "store function" described below) to store continuous measurement data for each measurement update in an external storage medium such as a USB (Universal Serial Bus) memory as an electronic file in a general-purpose format. The terminal device acquires the electronic file via the external storage medium. The terminal device reads the electronic file using general spreadsheet software and uses the calculation function of the spreadsheet software to calculate the amount of change based on the following equation 1. Formula 1: (Change in RMS voltage) = (Nth RMS voltage) - ((N-1)th RMS voltage)

[0039] In the third method, calculations are not performed in real time by the measuring device either, but rather the measurement data is once saved in an electronic file and then calculations are performed later by the terminal device.

[0040] As described above, in conventional technologies, measurement data is temporarily stored in an electronic file or the like, and then post-processed using an application on a terminal device. For example, a measurement device or a terminal device performs secondary calculations using two different time series of measurement data to compare and analyze them. In conventional measurement devices, secondary calculations using the latest measurement data currently being measured and past measurement data are performed post-processing, not in real time.

[0041] In order to solve the above problems, an object of the present disclosure is to provide a measurement device, a measurement method, and a program that improve the convenience of the measurement device when a user uses the measurement device.

[0042] An embodiment of the present disclosure will be mainly described below with reference to the accompanying drawings. The following description also applies to a measurement method and a program executed by the measurement device 10 to which the present disclosure is applied.

[0043] Fig. 1 is a block diagram showing an example of the configuration of a measurement system 1 including a measurement device 10 according to an embodiment of the present disclosure. An example of the configuration and functions of the measurement system 1 including the measurement device 10 according to an embodiment of the present disclosure will be mainly described with reference to Fig. 1. In addition to the measurement device 10, the measurement system 1 includes an information processing device 20 and an external storage medium 30.

[0044] For ease of explanation, FIG. 1 illustrates only one of each of the measuring device 10, the information processing device 20, and the external storage medium 30; however, the measurement system 1 may include two or more of each of these devices. For example, the measuring device 10 and the information processing device 20 are directly connected to each other so as to be able to communicate with each other. For example, the measuring device 10 and the external storage medium 30 are directly connected to each other so as to be able to communicate with each other. This is not a limitation, and each of the measuring device 10, the information processing device 20, and the external storage medium 30 may be communicatively connected to a network including a mobile communication network and the Internet. For example, the measuring device 10 may be communicatively connected to each of the information processing device 20 and the external storage medium 30 via a network.

[0045] The measurement device 10 includes a device that measures any physical parameter and acquires the measurement results as measurement data. The measurement device 10 includes, for example, a power analyzer. The measurement device 10 includes a communication unit 11, a storage unit 12 including a first memory 121 and a second memory 122, an input unit 13, an output unit 14, a conversion unit 15, and a control unit 16. In this disclosure, "measurement data" includes, for example, data stored in the second memory 122 of the storage unit 12 by primary calculation by the control unit 16 based on an input signal to the measurement device 10. The measurement data includes measured values ​​such as voltage, current, and power, harmonic analysis values, waveform values, and the phase and power factor of the voltage and current.

[0046] In one embodiment, the measurement device 10 acquires measurement data. The measurement device 10 generates a measurement data buffer in advance to store virtual data for the acquired measurement data. In this disclosure, "virtual data" includes, for example, other measurement data referenced for the latest measurement data. The virtual data includes, for example, other measurement data used together with the latest measurement data stored in the second memory 122 of the storage unit 12 when the control unit 16 executes secondary calculations, including power efficiency calculations and calculations based on user-defined calculation formulas. The "measurement data buffer" refers to, for example, a data frame that is preliminarily generated in firmware of the measurement device 10 and can store virtual data as reference data for the latest measurement data acquired. At least one measurement data buffer may be generated for each measurement data.

[0047] When the measuring device 10 acquires measurement data, it generates and outputs total measurement data including the measurement data and virtual data held in the measurement data buffer. In the present disclosure, "output" by the measuring device 10 includes, for example, screen output to a user using the output unit 14 of the measuring device 10. Without being limited thereto, "output" by the measuring device 10 may also include, for example, output of an electronic file to the second memory 122, which is an internal memory of the measuring device 10, or to an external storage medium 30 communicably connected to the measuring device 10. "Output" by the measuring device 10 may also include, for example, data communication output to an information processing device 20 communicably connected to the measuring device 10. "Output" by the measuring device 10 may also include, for example, screen output to a user using the output unit 24 of the information processing device 20, which is executed via communication with the information processing device 20.

[0048] The information processing device 20 includes any general-purpose electronic device, including, for example, a personal computer (PC), a tablet PC, a smartphone, and a wearable device such as a smart watch. As an example, the information processing device 20 functions as a terminal device. However, the information processing device 20 is not limited to these, and may include one or more server devices that can communicate with each other, or may include other electronic devices dedicated to the measurement system 1.

[0049] The external storage medium 30 includes, for example, any storage medium that is external to the measurement device 10. The external storage medium 30 may include, for example, a storage medium such as a removable medium. The removable medium includes a USB memory, a CD (Compact Disc), a DVD (Digital Versatile Disc), and a BD (Blu-ray (registered trademark) Disc).

[0050] With reference to FIG. 1, an example of the configuration of each of the measurement device 10 and the information processing device 20 included in the measurement system 1 will be mainly described.

[0051] The communication unit 11 includes one or more communication interfaces. The communication interfaces correspond to any wireless communication standard or wired communication standard for performing wireless or wired communication. The wireless communication standards include Bluetooth (registered trademark), Wi-Fi (registered trademark), ZigBee (registered trademark), and any other short-range wireless communication standards. The wired communication standards include communication standards such as USB.

[0052] Alternatively, the communication interface of the communication unit 11 may be communicatively connected to a network. The communication interface may be compatible with mobile communication standards such as 4G (4th Generation) and 5G (5th Generation), wired LAN (Local Area Network) standards, or wireless LAN standards. In one embodiment, the measurement device 10 may be communicatively connected to a network via the communication unit 11. The communication unit 11 may transmit and receive various information via the network.

[0053] The storage unit 12 includes a volatile memory such as a RAM (Random Access Memory). The storage unit 12 functions as, for example, a cache memory. The storage unit 12 is built into the measurement device 10. The storage unit 12 temporarily stores information obtained by the operation of the measurement device 10. For example, the first memory 121 of the storage unit 12 temporarily stores data before calculation by the control unit 16. The second memory 122 of the storage unit 12 temporarily stores data after calculation by the control unit 16 as measurement data. The second memory 122 can store measurement data, virtual data, total measurement data, etc.

[0054] The input unit 13 includes one or more input interfaces that detect user input and acquire input information based on the user's operation. The input interfaces include physical keys, capacitive keys, a touch screen that is integrated with the display of the output unit 14, an imaging module such as a camera, and a microphone that accepts audio input.

[0055] The output unit 14 includes one or more output interfaces that output information to provide it to the user. The output interfaces include a display that visually outputs information as an image, a speaker that audibly outputs information as sound, and a vibrator that tactilely outputs information as vibration. In this disclosure, "display" includes LCD (Liquid Crystal Display) and organic EL (Electro Luminescence) display.

[0056] The conversion unit 15 includes one or more conversion modules that convert analog values ​​of input signals such as voltage signals and current signals to be measured into digital values. The conversion modules include, for example, AD converters.

[0057] The control unit 16 includes one or more processors. In this disclosure, a "processor" refers to, but is not limited to, a general-purpose processor or a dedicated processor specialized for a specific process. The control unit 16 includes, for example, a CPU. The control unit 16 is communicatively connected to each component of the measurement device 10 and controls the operation of the entire measurement device 10.

[0058] The information processing device 20 included in the measurement system 1 has a communication unit 21 , a storage unit 22 , an input unit 23 , an output unit 24 , and a control unit 25 .

[0059] The communication unit 21 includes one or more communication interfaces. The communication interfaces correspond to any wireless communication standard or wired communication standard for performing wireless or wired communication. The wireless communication standards include Bluetooth (registered trademark), Wi-Fi (registered trademark), ZigBee (registered trademark), and any other short-range wireless communication standards. The wired communication standards include communication standards such as USB.

[0060] Alternatively, the communication interface of the communication unit 21 may be communicatively connected to a network. The communication interface may be compatible with mobile communication standards such as 4G and 5G, wired LAN standards, or wireless LAN standards. In one embodiment, the information processing device 20 may be communicatively connected to a network via the communication unit 21. The communication unit 21 may transmit and receive various information via the network.

[0061] The storage unit 22 includes storage modules such as a hard disk drive (HDD), a solid state drive (SSD), an electrically erasable programmable read-only memory (EEPROM), a read-only memory (ROM), and a RAM. The storage unit 22 stores information necessary to realize the operation of the information processing device 20. The storage unit 22 stores information obtained by the operation of the information processing device 20. For example, the storage unit 22 stores system programs, application programs, and various data acquired by any means such as communication.

[0062] The storage unit 22 may function as a main storage module, an auxiliary storage module, or a cache memory. The storage unit 22 is not limited to being built into the information processing device 20, and may include an external storage module connected via a digital input / output port such as a USB.

[0063] The input unit 23 includes one or more input interfaces that detect user input and acquire input information based on the user's operation. The input interfaces include physical keys, capacitive keys, a touch screen that is integrated with the display of the output unit 24, an imaging module such as a camera, and a microphone that accepts audio input.

[0064] The output unit 24 includes one or more output interfaces that output information to provide it to the user, such as a display that visually outputs information as an image, a speaker that audibly outputs information as a sound, and a vibrator that tactilely outputs information as a vibration.

[0065] The control unit 25 includes one or more processors. The control unit 25 includes, for example, a CPU. The control unit 25 is communicably connected to each component of the information processing device 20 and controls the operation of the information processing device 20 as a whole.

[0066] Fig. 2 is a flowchart for explaining an example of a measurement method executed by the measurement device 10 of Fig. 1. The flowchart shown in Fig. 2 shows the flow of basic processing executed by the control unit 16 of the measurement device 10. With reference to Fig. 2, an example of a measurement method executed by the measurement device 10 of Fig. 1 will be mainly explained.

[0067] In step S101, the control unit 16 of the measurement device 10 generates in advance a measurement data buffer that holds virtual data for the acquired measurement data. For example, the control unit 16 generates at least one measurement data buffer.

[0068] In step S102, the control unit 16 of the measuring device 10 acquires measurement data through primary calculations. For example, the control unit 16 uses data stored in the first memory 121, such as measurement values ​​such as voltage, current, and power, harmonic analysis values, and waveform values, to calculate power measurement values, harmonic analysis values, and waveform values ​​as part of the measurement data, and stores the calculated data in the second memory 122. The control unit 16 calculates the phase and power factor of voltage and current, as well as the remaining power measurement values ​​and harmonic analysis values, from the measurement data, such as the power measurement values ​​and harmonic analysis values, stored in the second memory 122, and adds these to the measurement data stored in the second memory 122. The control unit 16 acquires measurement data through the primary calculations described above and stores the data in the second memory 122.

[0069] In step S102, the control unit 16 of the measurement device 10 may further perform a secondary calculation using the virtual data together with the measurement data obtained by the primary calculation. For example, the control unit 16 may further perform a secondary calculation, including a power efficiency calculation and a calculation based on an arithmetic expression defined by the user, on the measurement data stored in the second memory 122. The control unit 16 may further add the data obtained by the secondary calculation to the measurement data stored in the second memory 122 to generate measurement data for one measurement update.

[0070] In step S103, when the control unit 16 of the measuring device 10 acquires the latest measurement data in step S102, it generates total measurement data including the measurement data and the virtual data stored in the measurement data buffer previously generated in step S101.

[0071] In step S104, the control unit 16 of the measurement device 10 outputs the total measurement data generated in step S103.

[0072] Fig. 3 is a first schematic diagram for explaining an example of the operation of the measurement device 10 in Fig. 1. With reference to Fig. 3, an example of a measurement data buffer generated by the measurement device 10 and virtual data held in the measurement data buffer will be mainly explained.

[0073] While conventional measuring devices have a unit's worth of measurement data output with one measurement update, the control unit 16 of the measuring device 10 generates one or more spare measurement data buffers in the measuring device 10's firmware so that past measurement data can be stored along with the latest measurement data. The spare measurement data for the latest measurement data is the virtual data described above. As with conventional measuring devices, the measurement data that stores the latest measurement values ​​measured and generated by the measuring device 10 itself is referred to as "main data." The control unit 16 generates and outputs total measurement data that includes the virtual data in addition to the main data.

[0074] The control unit 16 also provides a function for selecting the content of the measurement data to be substituted into the virtual data. For example, in order to evaluate or verify the latest measurement data, the user must use the input unit 13 of the measuring device 10 or the like to specify the measurement data to be compared and analyzed in real time with the latest measurement data. The control unit 16 sets the content of the measurement data to be substituted into the virtual data based on the selection input received from the user. The control unit 16 individually sets the content of the measurement data to be substituted for the virtual data held in each of the multiple measurement data buffers.

[0075] For example, the control unit 16 provides the user with a user interface such as that shown in FIG. 3 via the output unit 14 or the like, so that the user can specify the content of the measurement data to be substituted into the virtual data. For example, the control unit 16 displays a "Virtual Data Setting" screen on the display of the output unit 14 or the like, so that the user can specify what measurement data to substitute into the virtual data. For example, the control unit 16 may generate three measurement data buffers in advance, each capable of holding three pieces of virtual data, Sub1, Sub2, and Sub3. The user can set measurement data individually for each piece of virtual data on the "Virtual Data Setting" screen.

[0076] In the example shown in FIG. 3, the virtual data for Sub1 includes the measurement data last updated after measurement was stopped by the hold function of the measurement device 10. "Hold ON" is selected as the content of the virtual data for Sub1. The virtual data for Sub2 includes specified measurement data or virtual data from the total past measurement data stored in a storage medium such as the external storage medium 30 by the store function of the measurement device 10. "Store file" is selected as the content of the virtual data for Sub2. The virtual data for Sub3 includes the measurement data last updated by the measurement device 10. "Previous data" is selected as the content of the virtual data for Sub3.

[0077] When substituting measurement data into virtual data, if dedicated settings are required for the contents of the virtual data, the control unit 16 displays a "Content Settings" item to enable the user to set the settings. For example, the control unit 16 displays a "Content Settings" item for the virtual data Sub2 as a button for opening a settings menu for the virtual data Sub2. By clicking the "Content Settings" button, the user can open a settings menu for the store file and set the contents of the virtual data for the dedicated purpose. If no settings are required, such as for the virtual data Sub1 and Sub2, the "Content Settings" item is hidden.

[0078] Fig. 4 is a second schematic diagram for explaining an example of the operation of the measurement device 10 in Fig. 1. An example of total measurement data generated and output by the measurement device 10 will be mainly explained with reference to Fig. 4. Fig. 4 shows an example of a screen display by the output unit 14 of total measurement data including the latest measurement data as main data together with virtual data.

[0079] At the top of the screen of the output unit 14, the effective voltage Urms1 of input signal 1 of the main data is displayed as, for example, 1.0000 V. Next, the effective voltage Urms1 of input signal 1 in the first virtual data of Sub1, the effective voltage Urms1 of input signal 1 in the second virtual data of Sub2, and the effective voltage Urms1 of input signal 1 in the third virtual data of Sub3 are displayed as needed. In the example of Fig. 4, "---" is displayed when there is "no data" for the measurement data.

[0080] Fig. 5A is a third schematic diagram illustrating an example of the operation of the measurement device 10 of Fig. 1. Fig. 5B is a fourth schematic diagram illustrating an example of the operation of the measurement device 10 of Fig. 1. With reference to Figs. 5A and 5B, an example of the operation of the measurement device 10 when measurement data based on the hold function of the measurement device 10 is selected as virtual data for Sub1 will be mainly described. Figs. 5A and 5B show an example of the screen operation of the output unit 14 when the user performs a "hold ON" operation using the input unit 13 of the measurement device 10 when the content of the virtual data for Sub1 is "hold ON."

[0081] The measuring device 10 has a measurement hold function. When the measuring device 10 receives a hold-on command, for example, via a user input operation using the input unit 13, it stops the measurement and outputs the most recently updated measurement data to the screen of the output unit 14. When the user wants to use the measurement data obtained when the hold-on command was executed as a basis for comparison with the latest measurement data and analysis, the user selects "hold-on" as the content of the virtual data. As explained using Figure 3, no dedicated setting is required for the virtual data content "hold-on," and the button to open the "content setting" menu is hidden.

[0082] When measurement is stopped by the hold function of the measuring device 10, the control unit 16 of the measuring device 10 copies the last measured and updated measurement data as virtual data. For example, when the control unit 16 receives a user's operation of pressing the hold key via the input unit 13, it executes hold ON. The control unit 16 copies the main data held on the screen to Sub1 as virtual data. The control unit 16 outputs the value of the measurement data last measured and updated by hold ON to the virtual data of Sub1 on the screen. As a result, the screen transitions from a state in which the measurement data is held at a value of 1.0000 V as shown in FIG. 5A to a state in which the value of 1.0000 V is displayed for both the main data and the virtual data of Sub1 as shown in FIG. 5B.

[0083] Fig. 6 is a first flowchart for explaining an example of the operation executed by the measurement device 10 of Fig. 1. With reference to Fig. 6, the flow of processing by the control unit 16 of the measurement device 10 when "Hold ON" is selected as the content of the virtual data will be mainly explained.

[0084] In step S201, the control unit 16 of the measuring device 10 accepts the selection of "Hold ON" as the content of the virtual data.

[0085] In step S202, control unit 16 of measurement device 10 initializes the measurement data for the virtual data number for which "Hold ON" was selected as the content of the virtual data in step S201. In the examples shown in Figures 3, 5A, and 5B, control unit 16 initializes the measurement data for virtual data number Sub1.

[0086] In step S203, upon receiving a hold-on input operation from the user, control unit 16 of measurement device 10 turns on the hold function.

[0087] In step S204, the control unit 16 of the measurement device 10 stops the measurement by the measurement device 10.

[0088] In step S205, the control unit 16 of the measurement device 10 copies the main data, which is the last measurement data immediately before the measurement is stopped, as virtual data to a virtual data number whose virtual data content is set to "Hold ON." For example, the control unit 16 copies the main data, which is the last measurement data, as virtual data to virtual data number Sub1.

[0089] In step S206, the control unit 16 of the measurement device 10 copies the total measurement data including the virtual data acquired in step S205 as screen data including the main data and all the virtual data.

[0090] In step S207, the control unit 16 of the measurement device 10 generates display screen data based on the screen data updated by duplication in step S206.

[0091] In step S208, the control unit 16 of the measurement device 10 outputs the display screen data generated in step S207 to the output unit 14 to update the display.

[0092] Fig. 7 is a fifth schematic diagram for explaining an example of the operation of the measurement device 10 in Fig. 1. With reference to Fig. 7, an example of the operation of the measurement device 10 when measurement data based on the store function of the measurement device 10 is selected as virtual data for Sub2 will be mainly explained.

[0093] The measurement device 10 has a store function that saves measurement data in an electronic file after each measurement update. The electronic file of total measurement data generated by the measurement device 10 using the store function is called a "store file." When a user wants to use the measurement data contained in the store file as a basis for comparison with the latest measurement data and analysis, the user selects the "store file" as the content of the virtual data. As explained using Figure 3, the "store file" of the virtual data content requires special settings, and a button to open the "Content Settings" menu is displayed.

[0094] FIG. 7 shows an example of a screen displayed on the output unit 14 or the like when the user opens the "Content Settings" menu using the input unit 13 of the measurement device 10 when the content of the virtual data in Sub2 is "Store File." In the example screen shown in FIG. 7, the drive, path, file name, etc. of the storage destination of the store file to be read as virtual data by the control unit 16 of the measurement device 10 are specified in the "Store File" field. In addition, the number of the total measurement data to be read as virtual data from among the multiple past total measurement data contained in the store file specified in the "Store File" field is specified in the "Store Number" field. The measurement data to be read as virtual data from among the main data and all virtual data (Sub1~) contained in the total measurement data specified in the "Store Number" field is specified in the "Store Measurement Data" field. Finally, an execute button is displayed as "Load" to load the measurement data as virtual data into Sub2 of the measurement data buffer.

[0095] Fig. 8A is a sixth schematic diagram illustrating an example of the operation of the measurement device 10 of Fig. 1. Fig. 8B is a seventh schematic diagram illustrating an example of the operation of the measurement device 10 of Fig. 1. With reference to Figs. 8A and 8B, an example of the operation of the measurement device 10 when measurement data based on the store function of the measurement device 10 is selected as virtual data for Sub2 will be mainly described. Figs. 8A and 8B show an example of the screen operation of the output unit 14 when a user performs the "load" operation of Fig. 7 using the input unit 13 of the measurement device 10 when the content of the virtual data for Sub2 is "store file."

[0096] The control unit 16 of the measuring device 10 reads from the storage medium, such as the external storage medium 30, past total measurement data stored by the storage function of the measuring device 10, and generates virtual data based on the read past total measurement data. For example, the control unit 16 reads specified past total measurement data from a specific store file stored on the storage medium based on setting information previously specified by the user, such as that shown in Figure 7. The control unit 16 replicates the specified measurement data (main data) or virtual data from the read past total measurement data as virtual data.

[0097] For example, when the user presses the "Load" execution button, the control unit 16 of the measuring device 10 copies the specified measurement data based on the setting information shown in FIG. 7 to Sub2 as virtual data. The control unit 16 outputs the value of the specified past measurement data to the virtual data of Sub2 on the screen. As a result, the screen transitions from a state in which only the main data with a value of 1.0000 V is displayed as measurement data, as shown in FIG. 8A, to a state in which a value of 1.0000 V is displayed as the main data and a value of 1.2345 V is displayed as the virtual data of Sub2, as shown in FIG. 8B.

[0098] Fig. 9 is a second flowchart for explaining an example of the operation executed by the measurement device 10 of Fig. 1. With reference to Fig. 9, the flow of processing by the control unit 16 of the measurement device 10 when "store file" is selected as the content of the virtual data will be mainly explained.

[0099] In step S301, the control unit 16 of the measurement device 10 accepts the selection of "store file" as the content of the virtual data.

[0100] In step S302, the control unit 16 of the measurement device 10 initializes the measurement data for the virtual data number for which "store file" was selected as the content of the virtual data in step S301. In the examples shown in Figures 3, 8A, and 8B, the control unit 16 initializes the measurement data for virtual data number Sub2.

[0101] In step S303, the control unit 16 of the measurement device 10 accepts an input operation by the user pressing the "Load" execution button displayed on the screen of FIG.

[0102] In step S304, the control unit 16 of the measurement device 10 copies the measurement data specified by the setting information previously specified by the user as virtual data to a virtual data number whose contents are set in the "store file." For example, the control unit 16 copies the specified measurement data as virtual data to virtual data number Sub2.

[0103] In step S305, the control unit 16 of the measurement device 10 copies the total measurement data including the virtual data acquired in step S304 as screen data including the main data and all the virtual data.

[0104] In step S306, the control unit 16 of the measurement device 10 generates display screen data based on the screen data updated by duplication in step S305.

[0105] In step S307, the control unit 16 of the measurement device 10 outputs the display screen data generated in step S306 to the output unit 14 to update the display.

[0106] FIG. 10A is an eighth schematic diagram illustrating an example of the operation of the measurement device 10 of FIG. 1. FIG. 10B is a ninth schematic diagram illustrating an example of the operation of the measurement device 10 of FIG. 1. FIG. 10C is a tenth schematic diagram illustrating an example of the operation of the measurement device 10 of FIG. 1. With reference to FIGS. 10A to 10C, an example of the operation of the measurement device 10 when the measurement data measured and updated one time previously by the measurement device 10 is selected as the virtual data of Sub3 will be mainly described. FIGS. 10A to 10C show an example of the screen operation of the output unit 14 when the measurement device 10 repeatedly performs measurement updates when the content of the virtual data of Sub3 is "the data one time previously."

[0107] When the user wants to perform secondary calculations on the amount of change or deviation between the latest measurement data and the previous measurement data with the measurement device 10 at each measurement update, the user selects "previous data" as the content of the virtual data. As explained using Figure 3, no dedicated setting is required for the "previous data" of the virtual data content, and the button to open the "content setting" menu is hidden.

[0108] The control unit 16 of the measurement device 10 copies the measurement data previously measured and updated by the measurement device 10 as virtual data. For example, the control unit 16 copies the main data previously displayed on the screen as virtual data to Sub3. The control unit 16 outputs the value of the measurement data previously measured and updated to the virtual data of Sub3 on the screen. For example, the screen transitions from a state in which only the main data with a value of 1.0000 V is displayed as the measurement data as shown in FIG. 10A to a state in which, after the measurement update, the updated measurement data of 1.0001 V is displayed as the main data, and the value of 1.0000 V that was displayed as the main data during the previous measurement update is displayed as the virtual data of Sub3 as shown in FIG. 10B. After a further measurement update, the screen transitions again to a state in which the updated measurement data of 1.0002 V is displayed as the main data, and the value of 1.0001 V that was displayed as the main data during the previous measurement update is displayed as the virtual data of Sub3 as shown in FIG. 10C.

[0109] Fig. 11 is a third flowchart for explaining an example of the operation executed by the measurement device 10 of Fig. 1. With reference to Fig. 11, the flow of processing by the control unit 16 of the measurement device 10 when "previous data" is selected as the content of the virtual data will be mainly explained.

[0110] In step S401, the control unit 16 of the measurement device 10 accepts the selection of "previous data" as the content of the virtual data.

[0111] In step S402, control unit 16 of measurement device 10 initializes the measurement data for the virtual data number for which "previous data" was selected as the content of the virtual data in step S401. In the examples shown in Figures 3, 10A, 10B, and 10C, control unit 16 initializes the measurement data for virtual data number Sub3.

[0112] In step S403, the control unit 16 of the measuring device 10 completes one measurement. At this time, the conversion unit 15 converts the analog value of the input signal input to the measuring device 10 into a digital value. Based on the sampling data obtained by acquiring the digital sample values ​​at each sampling rate, data on measured values ​​such as voltage, current, and power, harmonic analysis values, and waveform values ​​is generated and stored in the first memory 121 of the storage unit 12.

[0113] In step S404, the control unit 16 of the measurement device 10 copies the current main data stored in the total measurement data as virtual data to a virtual data number whose content is set to "previous data" before updating the measurement data. For example, the control unit 16 copies the current main data as virtual data to virtual data number Sub3.

[0114] In step S405, the control unit 16 of the measuring device 10 updates the current main data stored in the second memory 122 of the storage unit 12. For example, the control unit 16 uses the data stored in the first memory 121 in step S403 to copy the power measurement values, harmonic analysis values, and waveform values ​​as part of the latest measurement data into the main data in the second memory 122. The control unit 16 calculates the phases and power factors of the voltage and current, as well as the remaining power measurement values ​​and harmonic analysis values, from the measurement data such as the power measurement values ​​and harmonic analysis values ​​stored in the second memory 122, and further stores these in the main data in the second memory 122.

[0115] In step S406, the control unit 16 of the measurement device 10 executes a secondary calculation, including a power efficiency calculation and a calculation based on a user-defined calculation formula, using the main data updated in step S405 and the necessary virtual data. The measurement device adds the data obtained by the secondary calculation to the main data stored in the second memory 122 and stores it.

[0116] In step S407, the control unit 16 of the measurement device 10 copies the total measurement data including the main data and virtual data acquired in the above steps as screen data including the main data and all virtual data.

[0117] In step S408, the control unit 16 of the measurement device 10 generates display screen data based on the screen data updated by duplication in step S407.

[0118] In step S409, the control unit 16 of the measurement device 10 outputs the display screen data generated in step S408 to the output unit 14 and updates the display.

[0119] In step S410, the control unit 16 of the measurement device 10 determines whether the series of measurements has ended. If the control unit 16 determines that the measurements have ended, the process ends. If the control unit 16 determines that the measurements have not ended, the process from step S403 onwards is repeated.

[0120] According to the above-described embodiment, the convenience of the measurement device 10 is improved when the user uses the measurement device 10. The measurement device 10 generates a measurement data buffer in advance to store virtual data for acquired measurement data. This allows the measurement device 10 to reference other measurement data in real time with the latest measurement data. Unlike conventional measurement devices that store measurement data in an electronic file and then perform calculations later, the measurement device 10 can perform calculations in real time when the latest measurement data is acquired. By enabling real-time calculations within a single device, the measurement device 10 can shorten the analysis time for users of the measurement device 10. The measurement device 10 can also simultaneously process the latest measurement result and multiple comparison measurement results, allowing multiple comparisons and analyses to be performed in a single measurement.

[0121] The measuring device 10 performs a secondary calculation using virtual data together with the measurement data acquired by the primary calculation. This allows the measuring device 10 to store virtual data for assisting comparison and analysis in a measurement data buffer in addition to the measurement data updated by the device itself, thereby enabling real-time secondary calculations to be performed using other measurement data with different time series from the latest measurement data together with the latest measurement data. For example, the measuring device 10 can simultaneously load multiple types of measurement data and perform real-time secondary calculations using the latest measurement data together with at least one previous measurement data in a single measurement. Because the measuring device 10 performs secondary calculations using measurement results and measurement results to be compared, unlike conventional techniques, there is no need to transfer measurement data to an information processing device 20, load the data using an application, and then execute secondary calculations. The measuring device 10 can output the results of the secondary calculations together with the latest measurement results.

[0122] The measuring device 10 sets the content of the measurement data to be substituted into the virtual data based on a selection input received from the user. This allows the measuring device 10 to appropriately select and set the measurement data required by the user of the measuring device 10 from among multiple types of measurement data that can be compared with the latest measurement data. The measuring device 10 can also handle the reading of multiple types of measurement data with a single device. Because the measuring device 10 has a method of selecting past measurement data to be used as a basis for comparison and analysis and substituting it into virtual data in the measurement data buffer, it is possible to perform more evaluations or verifications with a single device.

[0123] The measurement device 10 individually sets the content of the measurement data to be substituted for the virtual data held in each of the multiple measurement data buffers. This allows the measurement device 10 to individually select the content of the measurement data to be substituted for the virtual data in the measurement data buffer, making it possible to set a variety of measurement data for comparison that the user requires on a single device. Because the content of the measurement data for the measurement data buffer is selectable, the measurement device 10 is easily expandable, making it possible to more easily respond to new user requests.

[0124] The measurement device 10 stops measurement using the hold function and copies the most recently updated measurement data as virtual data. This allows the measurement device 10 to set the measurement data held in the measurement data buffer based on the hold function as a comparison target for the latest measurement data. The measurement device 10 can also perform comparison and analysis of the latest measurement data in a single measurement while referring to the measurement data held in the measurement data buffer based on the hold function.

[0125] The measurement device 10 reads from the storage medium the total past measurement data stored in the storage medium by the store function, and generates virtual data based on the read total past measurement data. This allows the measurement device 10 to set the measurement data held in the measurement data buffer based on the store function as a comparison target for the latest measurement data. The measurement device 10 can also perform comparison and analysis of the latest measurement data in a single measurement while referring to the measurement data held in the measurement data buffer based on the store function.

[0126] Based on setting information previously specified by the user, the measurement device 10 reads specified total past measurement data from a specific store file stored in a storage medium and replicates specified measurement data or virtual data from the total past measurement data as virtual data. This allows the measurement device 10 to set the past measurement data specified by the user as a comparison target for the latest measurement data. The measurement device 10 can also perform comparison and analysis of the latest measurement data in a single measurement while referring to the past measurement data specified by the user.

[0127] The measurement device 10 copies the measurement data measured and updated one time previously as virtual data. This allows the measurement device 10 to set the measurement data measured and updated one time previously as a comparison target for the latest measurement data. The measurement device 10 can also perform comparison and analysis of the latest measurement data in a single measurement while referring to the measurement data measured and updated one time previously.

[0128] Although the present disclosure has been described based on the drawings and embodiments, it should be noted that those skilled in the art can make various modifications and alterations based on the present disclosure. Therefore, it should be noted that these modifications and alterations are included in the scope of the present disclosure. For example, the functions included in each configuration or step can be rearranged so as not to be logically inconsistent, and multiple configurations or steps can be combined or divided into one.

[0129] For example, a general-purpose electronic device such as a smartphone or computer can be configured to function as the measuring device 10 according to the embodiment described above. Specifically, a program describing the processing content for realizing each function of the measuring device 10 according to the embodiment is stored in the memory of the electronic device, and the program is read and executed by a processor of the electronic device. Therefore, the present disclosure can also be realized as a program executable by a processor.

[0130] Alternatively, the present disclosure may be realized as a non-transitory computer-readable medium storing a program executable by one or more processors to cause the measurement device 10 according to one embodiment to perform the functions thereof. It should be understood that these are also encompassed within the scope of the present disclosure.

[0131] In the above embodiment, the measurement device 10 performs the secondary calculation using the virtual data together with the measurement data acquired by the primary calculation, but this is not limiting. The measurement device 10 does not necessarily have to perform the secondary calculation.

[0132] In the above embodiment, the measurement device 10 sets the content of the measurement data to be substituted into the virtual data based on a selection input received from the user. However, this is not limited to this. The measurement device 10 may set the content of the measurement data to be substituted into the virtual data using a method other than a user selection formula. For example, the measurement device 10 may automatically select the content of the measurement data to be substituted into the virtual data by itself.

[0133] In the above embodiment, the measurement device 10 individually sets the content of the measurement data to be substituted for the virtual data held in each of the multiple measurement data buffers, but this is not limiting. The measurement device 10 does not have to individually set the content of the measurement data to be substituted for the virtual data held in each of the multiple measurement data buffers.

[0134] In the above embodiment, the contents of the virtual data stored in the measurement data buffer are described as three examples: "Hold ON," "Store File," and "Previous Data." However, the contents are not limited to these. The number and contents of the virtual data stored in the measurement data buffer are not limited to those described in the above embodiment, and may be configured arbitrarily.

[0135] For example, the measuring device 10 can calculate the amount of change or deviation by using the "data one time ago" of the virtual data content. This type of calculation corresponds to differentiation. For example, the measuring device 10 can calculate the amount of change or deviation for two measurements by using two measurement data buffers to simultaneously store the measurement data from one measurement time ago and two measurements ago. This type of calculation corresponds to second-order differentiation. The measuring device 10 may set "data N times ago" as the virtual data content, and may be able to set how many measurements ago the measurement data is stored in the measurement data buffer. This allows the measuring device 10 to calculate N-th-order differentiation. The measuring device 10 can broaden the scope of analysis.

[0136] For example, the measurement apparatus 10 may duplicate measurement data acquired as a single shot during continuous measurements as virtual data, unlike a configuration that stops measurement such as hold-on.

[0137] In the above embodiment, the measuring device 10 is uniformly described as accepting an input operation such as a selection input as a user operation using the input unit 13, but this is not limiting. The measuring device 10 may acquire input information based on the user's input operation via the input unit 23 of the information processing device 20 instead of or in addition to the input unit 13. In this case, the measuring device 10 may acquire a corresponding communication command from the information processing device 20 via the communication unit 11 based on the input operation using the input unit 23 of the information processing device 20, and perform an operation in accordance with the communication command.

[0138] For example, the user may use the input unit 23 of the information processing device 20 to specify the measurement data to be compared and analyzed in real time with the latest measurement data. For example, if the content of the virtual data of Sub1 is "Hold ON," the user may use the input unit 23 of the information processing device 20 to perform a "Hold ON" operation. For example, if the content of the virtual data of Sub2 is "Store File," the user may use the input unit 23 of the information processing device 20 to open a "Content Settings" menu. For example, if the content of the virtual data of Sub2 is "Store File," the user may use the input unit 23 of the information processing device 20 to perform the "Load" operation of FIG. 7.

[0139] In the above embodiment, the measuring device 10 has been described as outputting information required for the user from the output unit 14 of the measuring device 10, but this is not limiting. The measuring device 10 may output information required for the user from the output unit 24 of the information processing device 20 instead of or in addition to the output unit 14. In this case, in order to output information from the output unit 24 of the information processing device 20, the measuring device 10 may provide a corresponding communication command to the information processing device 20 via the communication unit 11, thereby causing the information processing device 20 to perform an output operation in accordance with the communication command.

[0140] For example, the measurement device 10 may provide a user interface such as that shown in Fig. 3 to the user via the output unit 24 of the information processing device 20. For example, Fig. 4 may show an example of a screen display by the output unit 24 of the information processing device 20 of total measurement data including the latest measurement data as main data together with virtual data. For example, Figs. 5A and 5B may show an example of the screen operation of the output unit 24 of the information processing device 20 when the content of the virtual data of Sub1 is "Hold ON" and the user performs a "Hold ON" operation. For example, in step S208 of Fig. 6, the control unit 16 of the measurement device 10 may output the display screen data generated in step S207 to the output unit 24 of the information processing device 20 to perform a display update.

[0141] For example, Fig. 7 may show an example of a screen of the output unit 24 of the information processing device 20 when the user opens the "Content Settings" menu when the content of the virtual data of Sub2 is "Store File." For example, Figs. 8A and 8B may show an example of the screen operation of the output unit 24 of the information processing device 20 when the user performs the "Load" operation of Fig. 7 when the content of the virtual data of Sub2 is "Store File." For example, in step S307 of Fig. 9, the control unit 16 of the measurement device 10 may output the display screen data generated in step S306 to the output unit 24 of the information processing device 20 to perform a display update.

[0142] 10A to 10C may show an example of the screen operation of the output unit 24 of the information processing device 20 when the content of the virtual data of Sub3 is "previous data" and measurement updates are repeated by the measurement device 10. For example, in step S409 of Fig. 11, the control unit 16 of the measurement device 10 may output the display screen data generated in step S408 to the output unit 24 of the information processing device 20 to perform display updates.

[0143] In the above embodiment, the virtual data of Sub2 has been described as including measurement data or virtual data specified among the total past measurement data stored in the external storage medium 30 by the storage function of the measurement device 10, but this is not limited to this. The store file including the total measurement data may be stored in the storage unit 22 of the information processing device 20 instead of or in addition to the external storage medium 30. Alternatively, the storage unit 12 of the measurement device 10 itself may have non-volatile memory such as an HDD, and the store file including the total measurement data may be stored in the storage unit 12 of the measurement device 10 itself.

[0144] In the above embodiment, the number of input signals in the main data of the total measurement data is described as one, but this is not limited to this. The number of input signals in the main data of the total measurement data may be two or more. For example, the effective voltage values ​​of four input signals such as Urms1, Urms2, Urms3, and Urms4 may be collectively included as main data.

[0145] Some embodiments of the present disclosure will be described below as examples, however, it should be noted that the embodiments of the present disclosure are not limited to these examples. [Appendix 1] A measurement device for acquiring measurement data, A control unit is provided, the control unit a measurement data buffer for storing virtual data for the acquired measurement data is generated in advance, and when the measurement data is acquired, total measurement data including the acquired measurement data and the virtual data stored in the measurement data buffer is generated and output; Measuring equipment. [Appendix 2] 10. The measurement device of claim 1, the control unit acquires the measurement data by a primary calculation, and executes a secondary calculation using the acquired measurement data and the virtual data. Measuring equipment. [Appendix 3] 3. The measurement device according to claim 1 or 2, the control unit sets the content of the measurement data to be substituted into the virtual data based on a selection input received from a user. Measuring equipment. [Appendix 4] 4. The measurement device of claim 3, the control unit individually sets the content of the measurement data to be substituted for the virtual data held in each of the plurality of measurement data buffers. Measuring equipment. [Appendix 5] 5. The measurement device according to claim 1, further comprising: the control unit stops the measurement by a hold function of the measurement device and copies the measurement data that was last measured and updated as the virtual data. Measuring equipment. [Appendix 6] 6. The measurement device according to any one of claims 1 to 5, the control unit reads the total past measurement data stored in a storage medium by a storage function of the measurement device from the storage medium, and generates the virtual data based on the read total past measurement data. Measuring device. [Appendix 7] 7. The measurement device of claim 6, the control unit reads out the specified past total measurement data from a specific store file stored in the storage medium based on setting information previously specified by a user, and replicates the specified measurement data or virtual data from the past total measurement data as the virtual data. Measuring device. [Appendix 8] 8. The measurement device according to any one of claims 1 to 7, the control unit duplicates the measurement data measured and updated once previously by the measurement device as the virtual data. Measuring device. [Appendix 9] A measurement method for acquiring measurement data, comprising: generating a measurement data buffer in advance to hold virtual data for the acquired measurement data; When the measurement data is acquired, generating and outputting total measurement data including the measurement data and the virtual data held in the measurement data buffer; Including, Measurement method. [Appendix 10] The measuring device that acquires the measurement data includes: generating a measurement data buffer in advance to hold virtual data for the acquired measurement data; When the measurement data is acquired, generating and outputting total measurement data including the measurement data and the virtual data held in the measurement data buffer; causing an action including program. [Explanation of symbols]

[0146] 1. Measurement System 10. Measuring equipment 11 Communications Department 12 Storage section 121 First Memory 122 Second Memory 13 Input section 14 Output section 15 Conversion unit 16 Control Unit 20 Information processing equipment 21 Communications Department 22 Memory section 23 Input section 24 Output section 25 Control Unit 30 External storage medium

Claims

1. A measurement device that acquires measurement data, A control unit is provided, the control unit a measurement data buffer for storing virtual data for the acquired measurement data is generated in advance, and when the measurement data is acquired, total measurement data including the acquired measurement data and the virtual data stored in the measurement data buffer is generated and output; Measuring equipment.

2. 2. The measuring device according to claim 1, the control unit acquires the measurement data by a primary calculation, and executes a secondary calculation using the acquired measurement data and the virtual data. Measuring equipment.

3. 3. The measuring device according to claim 1 or 2, the control unit sets the content of the measurement data to be substituted into the virtual data based on a selection input received from a user. Measuring equipment.

4. 4. The measuring device according to claim 3, the control unit individually sets the content of the measurement data to be substituted for the virtual data held in each of the plurality of measurement data buffers. Measuring equipment.

5. 3. The measuring device according to claim 1 or 2, the control unit stops the measurement by a hold function of the measurement device and copies the measurement data that was last measured and updated as the virtual data. Measuring equipment.

6. 3. The measuring device according to claim 1 or 2, the control unit reads the total past measurement data stored in a storage medium by a storage function of the measurement device from the storage medium, and generates the virtual data based on the read total past measurement data. Measuring equipment.

7. 7. The measuring device according to claim 6, the control unit reads out the specified total past measurement data from a specific store file stored in the storage medium based on setting information previously specified by a user, and replicates the specified measurement data or virtual data from the total past measurement data as the virtual data. Measuring equipment.

8. 3. The measuring device according to claim 1 or 2, the control unit duplicates the measurement data measured and updated one time previously by the measurement device as the virtual data. Measuring equipment.

9. A measurement method for acquiring measurement data, comprising: generating a measurement data buffer in advance to hold virtual data for the acquired measurement data; When the measurement data is acquired, generating and outputting total measurement data including the measurement data and the virtual data held in the measurement data buffer; Including, Measurement method.

10. The measuring device that acquires the measurement data includes: generating a measurement data buffer in advance to hold virtual data for the acquired measurement data; When the measurement data is acquired, generating and outputting total measurement data including the measurement data and the virtual data held in the measurement data buffer; performing an action including program.

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