Electrical characteristic provision device

Abstract

To provide an electrical characteristic provision device that provides a second electrical characteristic by using a first electrical characteristic provision device that measures a first electrical characteristic, on the basis of a relationship between the first electrical characteristic and second electrical characteristic of a measurement object.SOLUTION: An electrical characteristic provision device 150 of an electrical characteristic measurement system 100 provides a second electrical characteristic by using a first electrical characteristic measurement device 110 that is different from a first electrical characteristic of a measurement object measured by the first electrical characteristic measurement device 110. The electrical characteristic provision device 150 provides the second electrical characteristic by using corresponding to measurement information indicating correspondence between the value of the first electrical characteristic and the value of the second electrical characteristic of the measurement object.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an electrical characteristic providing device, and relates to an electrical characteristic providing device that provides a second electrical characteristic based on the relationship between a first electrical characteristic and a second electrical characteristic of a measurement object using a first electrical characteristic measuring device that measures a first electrical characteristic. [Background technology]

[0002] Conventional methods of providing electrical characteristics will be described using a clamp-type ammeter shown in Fig. 11 and a power consumption measuring device shown in Fig. 12. The clamp-type ammeter shown in Fig. 11 has a clamp sensor 2 that detects a current flowing through a clamped electric wire 200 and outputs a detection signal, and calculates a current value based on the detection signal output by the clamp sensor 2 (see Patent Document 1).

[0003] The power consumption measuring device shown in Figure 12 includes a shunt resistor 5 connected in series to a load for measuring the current flowing through the load, a switch 6 connected in parallel to the shunt resistor 5, and a power consumption calculation unit 7 that measures the voltage applied to the load and the current flowing through the load and calculates the power consumption of the load (see Patent Document 2 for the above). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2007-309731 A [Patent Document 2] JP 2014-35314 A Summary of the Invention [Problem to be solved by the invention]

[0005] The clamp-type ammeter in Fig. 11 and the power consumption meter in Fig. 12 described above have the following points that need to be improved: While the clamp-type ammeter in Fig. 11 is easy to install, it cannot accurately measure electrical characteristics other than current, such as power factor and power consumption.

[0006] In addition to using a clamp-type ammeter, it is possible to measure the power supply voltage and power factor by measuring the power supply voltage of each phase, such as three-phase AC, but this requires a certain amount of space for installation due to the terminal connections and the large size of the device, and the device price is also relatively high.

[0007] On the other hand, the power consumption meter in Fig. 12 uses a shunt resistor, which can measure power consumption more accurately, but the device is large and requires a certain amount of space for installation. Also, the use of a shunt resistor causes extra energy consumption in the shunt resistor, and in addition, the shunt resistor generates heat. Therefore, the power consumption meter shown in Fig. 12 is relatively expensive.

[0008] In other words, there is an area that needs to be improved in that the power consumption cannot be accurately measured using an electrical characteristic measuring device such as an easily installed clamp-type current meter.

[0009] Therefore, an object of the present invention is to provide a second electrical characteristic based on the relationship between a first electrical characteristic and a second electrical characteristic of a measurement object, using a first electrical characteristic measuring device that measures a first electrical characteristic. Effect of the Invention

[0010] The means for solving the problems in the present invention and the effects of the invention are described below.

[0011] The electrical characteristic providing device of the present invention is an electrical characteristic providing device that uses a first electrical characteristic of a measurement object measured using a first electrical characteristic providing device to provide a second electrical characteristic different from the first electrical characteristic, and has a first electrical characteristic acquisition unit that acquires the first electrical characteristic, and an electrical characteristic providing unit that uses corresponding measurement information indicating the correspondence between the first electrical characteristic and the second electrical characteristic to provide the second electrical characteristic corresponding to the acquired first electrical characteristic, and / or other electrical characteristics calculated using the first electrical characteristic and / or the second electrical characteristic.

[0012] This makes it possible to use the first electrical characteristic measuring device to measure a second electrical characteristic that is different from the first electrical characteristic and cannot be measured by the first electrical characteristic measuring device.

[0013] The electrical characteristic providing device according to the present invention further includes a second electrical characteristic acquiring unit that acquires the second electrical characteristic corresponding to the first electrical characteristic.

[0014] This allows corresponding measurement information to be generated.

[0015] In the electrical characteristic providing device of the present invention, the first electrical characteristic acquisition unit acquires the first electrical characteristic measured by the first electrical characteristic measuring device that measures the first electrical characteristic by measuring a physical quantity different from the first electrical characteristic of the object to be measured.

[0016] This makes it possible to provide the second electrical characteristic at low cost by using an inexpensive first electrical characteristic measuring device.

[0017] In the electrical characteristic providing device according to the present invention, the first electrical characteristic acquiring unit acquires a current of the measurement target as the first electrical characteristic.

[0018] This makes it possible to provide electrical characteristics other than the current corresponding to the target current simply by measuring the target current.

[0019] In the electrical characteristic providing device of the present invention, the second electrical characteristic acquisition unit acquires the second electrical characteristic from the second electrical characteristic measuring device that measures the second electrical characteristic related to the first electrical characteristic of the measurement object.

[0020] As a result, by using the second electrical characteristic measuring device with high measurement accuracy, it is possible to provide the second electrical characteristic with high measurement accuracy.

[0021] In the electrical characteristic providing device according to the present invention, The second electrical characteristic acquisition unit is configured to acquire, as the second electrical characteristic, a voltage and / or a power factor of the measurement object.

[0022] This can provide the voltage, power factor, and / or other electrical properties of the object being measured, such as power consumption, which can be calculated using the voltage and power factor. [Brief description of the drawings]

[0023] [Figure 1] 1 is a diagram showing an overview of an electrical characteristic providing system 100 which is an embodiment of the electrical characteristic providing system according to the present invention. [Diagram 2] FIG. 2 is a diagram showing a hardware configuration of a first electrical characteristic measuring apparatus 110. [Diagram 3] FIG. 2 is a diagram showing a hardware configuration of a second electrical characteristic measuring apparatus 130. [Figure 4] FIG. 2 is a diagram showing a hardware configuration of an electrical characteristic providing device 150. [Diagram 5] FIG. 13 is a diagram showing the data structure of a corresponding measurement information DB. [Figure 6] 13 is a flowchart showing a corresponding measurement information generating process. [Figure 7] 13 is a flowchart showing a corresponding measurement information generating process. [Figure 8] 13 is a flowchart showing an electrical characteristic providing process. [Figure 9] 13 is a flowchart showing an electrical characteristic providing process. [Figure 10] FIG. 13 is a diagram showing another embodiment of an electrical characteristic providing device. [Figure 11] FIG. 1 illustrates a conventional electrical characteristic providing device. [Figure 12] FIG. 1 illustrates a conventional electrical characteristic providing device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. EXAMPLES

[0025] An electrical characteristic providing device according to the present invention will be described by taking an electrical characteristic providing device 150 as an example.

[0026] 1. Electrical characteristic measuring system 100 1 shows an overview of an electrical characteristic measurement system 100. The electrical characteristic measurement system 100 uses a first electrical characteristic measurement device 110 to provide a second electrical characteristic of a measurement object E that uses a three-phase AC three-wire system. An electrical characteristic providing device 150 acquires the first electrical characteristic from the first electrical characteristic measurement device 110 and provides a second electrical characteristic different from the first electrical characteristic.

[0027] The electrical characteristic measuring system 100 includes a first electrical characteristic measuring device 110 , a second electrical characteristic measuring device 130 , and an electrical characteristic calculating device 150 .

[0028] 1. Configuration of the first electrical characteristic measuring apparatus 110 The first electrical characteristic measuring device 110 measures a first electrical characteristic of the measurement object E. The first electrical characteristic measuring device 110 measures the first electrical characteristic by measuring a physical quantity different from the first electrical characteristic of the measurement object E. In other words, the first electrical characteristic measuring device 110 does not directly measure the first electrical characteristic of the measurement object E, but indirectly measures the first electrical characteristic.

[0029] Here, a clamp-type ammeter, which is an indirect measurement type current measuring device, is used as the first electrical characteristic measuring device 110. The clamp-type ammeter measures the current, which is the first electrical characteristic of the object to be measured E. The clamp-type ammeter measures the current of the object to be measured E by measuring a magnetic field that changes when a current flows, which is different from the current of the object to be measured E. The clamp-type ammeter is installed in the electrical wiring between the object to be measured E and a power supply facility (e.g., an outlet facility or a switchboard SD) that supplies power to the object to be measured E.

[0030] The first electrical characteristic measuring device 110 has a control unit 110a, a measurement unit 110b, a communication unit 110c, and a power supply unit 110d. The control unit 110a controls the measurement of the first electrical characteristic via the measurement unit 110b. The measurement unit 110b measures the first electrical characteristic of the measurement object E. The communication unit 110c provides the measured first electrical characteristic to another communication device. The power supply unit 110d obtains the power required for each component of the first electrical characteristic measuring device 110.

[0031] 2. Configuration of the second electrical characteristic measuring device 130 The second electrical characteristic measuring device 130 measures a second electrical characteristic associated with the first electrical characteristic of the measurement object E. The second electrical characteristic measuring device 130 directly measures the second electrical characteristic.

[0032] Here, a direct measurement type current measuring device is used as the second electrical characteristic measuring device 130. The direct measurement type current measuring device is arranged in series with a specified electrical wiring of the measurement object E, and directly measures the current flowing through the electrical wiring. The direct measurement type current measuring device is installed inside the device or at a specified position (terminal) on a distribution board. Generally, direct measurement type current measuring devices can measure more accurately than indirect measurement type current measuring devices, that is, they have a high measurement accuracy, but they are expensive.

[0033] The second electrical characteristic measuring device 130 has a control unit 130a, a measurement unit 130b, a communication unit 130c, and a power supply unit 130d. The control unit 130a controls the measurement of the second electrical characteristic via the measurement unit 130b. The measurement unit 130b measures the second electrical characteristic of the measurement object E. The communication unit 130c provides the measured second electrical characteristic to another communication device. The power supply unit 130d obtains the power required for each component of the second electrical characteristic measuring device 130.

[0034] 3. Configuration of electrical characteristic providing device 150 The hardware configuration of the electrical characteristic providing device 150 will be described with reference to Fig. 4. The electrical characteristic providing device 150 includes a CPU 150a, a memory 150b, a storage 150c such as a hard disk drive (HDD) or a solid state drive (SSD), a keyboard 150d, a mouse 150e, a display 150f, a drive 150g for various media, a communication circuit 150h, and a power supply circuit 150i.

[0035] The CPU 150a performs processing based on the operating system (OS), electrical characteristic calculation program, and other applications recorded in the storage 150c. The memory 150b provides a working area for the CPU 150a. The storage 130c records and holds the operating system (OS), electrical characteristic providing program, and other application programs. The storage 150c also records and holds a corresponding measurement information database (hereinafter, corresponding measurement DB) required for the electrical characteristic providing program. The corresponding measurement information DB will be described later.

[0036] The keyboard 150d and mouse 150e receive commands from the outside. The display 150f displays images such as a user interface. The drive 150g for various media reads the electrical characteristic providing program from a predetermined medium 150p in which the electrical characteristic providing program is recorded, and also reads other application programs from other media, thereby reading data from various media. The communication circuit 150h connects to a predetermined network and transmits and receives information to and from external communication devices such as the first electrical characteristic measuring device 110 and the second electrical characteristic measuring device 130.

[0037] The power supply circuit 150i obtains power from an external source and supplies the necessary power to each component of the electrical characteristic providing device 150.

[0038] 2nd information 1. Compatible measurement information DB The corresponding measurement information is information indicating a correspondence relationship between a value of a first electrical characteristic and a value of a second electrical characteristic in the measurement object E. In this embodiment, the corresponding measurement information indicates a correspondence relationship between a current, which is the first electrical characteristic, and a voltage and a power factor, which are the second electrical characteristics, in the measurement object E.

[0039] The corresponding measurement information DB is information in which a plurality of corresponding measurement information are accumulated.

[0040] The data structure of the corresponding measurement information DB is shown in Fig. 5. The corresponding measurement information DB has a second electrical characteristic measuring device identification information description area, a measurement target identification information description area, and a correspondence relationship description area.

[0041] The second electrical characteristic measuring device identification information description area describes second electrical characteristic measuring device identification information indicating information for identifying the second electrical characteristic measuring device 130. As the second electrical characteristic measuring device identification information, for example, the model number of the second electrical characteristic measuring device 130 to be used is described.

[0042] The measurement object identification information description area describes measurement object identification information that indicates information for identifying the measurement object. As the measurement object identification information, for example, the model number of the measurement object to be used is described.

[0043] The corresponding measurement relationship description area describes the correspondence relationship between the value of the first electrical characteristic and the value of the second electrical characteristic. The correspondence relationship description area has a current description area, a voltage description area, and a voltage description area. The current description area describes the current, which is the first electrical characteristic measured by the second electrical characteristic measuring device 130, for the measurement object E. In other words, the current description area functions as a first electrical characteristic description area.

[0044] Similarly, the voltage description area and the power factor description area respectively describe the voltage and the power factor, which are the second electrical characteristics measured by the second electrical characteristic measuring device 130, for the measurement object E. That is, the current description area and the power factor description area each function as a second electrical characteristic description area.

[0045] For example, if the measured voltage is "200V" and the power factor is "82%" when the current is "10A" for the measurement object E, then "5A" will be written in the current description area, "200V" in the voltage description area, and "82%" in the power factor description area of ​​the correspondence relationship description area.

[0046] 3. Correspondence generation process, electrical characteristics provision process The electrical characteristic measurement system 100 executes a correspondence relationship generation process and an electrical characteristic provision process. In the correspondence relationship generation process, a corresponding measurement relationship information DB is generated. In addition, in the electrical characteristic provision process, a second electrical characteristic of the measurement object E is provided from a first electrical characteristic of the measurement object E measured using the first electrical characteristic measurement device 110.

[0047] 1. Correspondence generation process The correspondence relationship processing will be described with reference to the flowcharts of Fig. 6 and Fig. 7. The user of the electrical characteristic measuring system 100 inputs correspondence relationship generation processing start information to the electrical characteristic providing device 150 to start the correspondence relationship generation processing. The user inputs the correspondence relationship generation processing start information by selecting a predetermined button displayed on the display 150f of the current measuring device 150, for example.

[0048] 6, the CPU 150a of the electrical characteristic providing device 150 acquires correspondence generation process start information (S601), and upon acquiring measurement object identification information of the measurement object E (S603), enters a standby state for acquiring electrical characteristic measurement information (described later) from the second electrical characteristic measuring device 130. Note that the user inputs the measurement object identification information into the electrical characteristic providing device 150 using the keyboard 150d of the electrical characteristic providing device 150 or the like.

[0049] When starting measurement using the second electrical characteristic measuring device 130, the user inputs measurement start information to the second electrical characteristic measuring device 130. The user inputs the measurement start information by selecting a predetermined button arranged on the second electrical characteristic measuring device 130, or the like.

[0050] As shown in FIG. 7, when the control unit 130a of the second electrical characteristic measuring device 130 acquires measurement start information (S701), the control unit 130a measures the current, voltage, and power factor via the measuring unit 130b (S703).

[0051] The control unit 130a generates electrical characteristic measurement information that associates the measured current, voltage, and power factor values ​​with second electrical characteristic identification information that identifies the control unit 130a (S705). The control unit 130a transmits the generated electrical characteristic measurement information to the electrical characteristic providing device 150 (S707). The control unit 130a repeats the processes of steps S701 to S707 until the measurement is completed (S709).

[0052] Returning to FIG. 6, when the CPU 150a of the electrical characteristic providing apparatus 150 acquires the electrical characteristic measurement information (S605), it associates the electrical characteristic measurement information with the measurement target identification information acquired in step S603 and generates corresponding measurement information (S607).

[0053] The CPU 150a stores and holds the generated corresponding measurement information in the corresponding measurement information DB (S607).The CPU 150a repeats the processes of steps S601 to S607 until the correspondence relationship generating process ends (S609).

[0054] 2. Electrical characteristics provision processing The electrical characteristic providing process will be described with reference to the flowcharts of Figures 8 and 9. The user of the electrical characteristic measurement system 100 inputs electrical characteristic providing process start information to start the electrical characteristic providing process to the electrical characteristic providing device 150. The user inputs the electrical characteristic providing process start information by selecting a predetermined button displayed on the display 150f of the current measuring device 150, for example.

[0055] 8, the CPU 150a of the electrical characteristic providing device 150 acquires electrical characteristic providing process start information (S801), and upon acquiring measurement object identification information of the measurement object E (S803), enters a standby state for acquiring first electrical characteristic measurement information (described later) from the first electrical characteristic measuring device 110. Note that the user inputs the measurement object identification information into the electrical characteristic providing device 150 using the keyboard 150d of the electrical characteristic providing device 150 or the like.

[0056] When starting measurement using the first electrical characteristic measuring device 110, the user inputs measurement start information to the first electrical characteristic measuring device 110. The user inputs the measurement start information by selecting a predetermined button arranged on the first electrical characteristic measuring device 110, or the like.

[0057] As shown in FIG. 9, when the control unit 110a of the first electrical characteristic measuring apparatus 110 receives measurement start information (S901), the control unit 110a measures the current via the measurement unit 110b (S903).

[0058] The control unit 110a generates first electrical characteristic measurement information by associating the measured current value with first electrical characteristic identification information for identifying itself (S905). The control unit 110a transmits the generated first electrical characteristic measurement information to the electrical characteristic providing device 150 (S907). The control unit 110a repeats the processes of steps S901 to S907 until the measurement is completed (S909).

[0059] Returning to FIG. 8, when the CPU 150a of the electrical characteristic providing device 150 acquires the first electrical characteristic measurement information (S805), it acquires corresponding measurement information corresponding to the current of the first electrical characteristic measurement information acquired in step S805 from the corresponding measurement information DB for the measurement target identification information acquired in step S803 (S807). If the corresponding measurement information D contains corresponding measurement information having the same value as the current value acquired in step S805, the CPU 150a acquires the voltage and power factor of the corresponding measurement information. If the corresponding measurement information corresponding to the same current value does not exist, the CPU 150a acquires corresponding measurement information having two currents closest to the current value, for example, and acquires the voltage and power factor by complementing the voltage and power factor of the two corresponding measurement information according to linear interpolation based on the current.

[0060] The CPU 150a calculates the power consumption from the current acquired in step S805, and the voltage and power factor acquired in step S807 (S809). The CPU 150a generates electrical characteristic providing information using the calculated power consumption (S811). The CPU 150a transmits the generated electrical characteristic providing information to the first electrical characteristic measurement 110 (S813). The CPU 150a repeats the processes of steps S801 to S813 until the electrical characteristic providing process ends (S815).

[0061] 9, when the control unit 110a of the first electrical characteristic measuring device 110 acquires the electrical characteristic providing information (S909), it displays the power consumption of the acquired electrical characteristic providing information (S911). The control unit 110a repeats the processes of steps S901 to S911 until the electrical characteristic providing process ends (S913).

[0062] In this way, the electrical characteristic providing system 100 can use the first electrical characteristic measuring device to measure the second electrical characteristic that is different from the first electrical characteristic and cannot be measured by the first electrical characteristic measuring device. In addition, by using the first electrical characteristic measuring device that is less expensive than the second electrical characteristic measuring device, the second electrical characteristic can be measured at low cost.

[0063] Furthermore, when a large number of measurement objects are installed in a factory and the second electrical characteristic is obtained for each measurement object, by measuring the second electrical characteristic (e.g., power factor) of each measurement object in advance and recording and storing the corresponding measurement information, it is possible to measure the first electrical characteristic (e.g., current) of each measurement object and then obtain the second electrical characteristic (power factor) for each measurement object, thereby providing advantages in terms of both cost and labor required for measurement.

[0064] [Other embodiments] (1) Acquisition of corresponding measurement information: In the above-mentioned first embodiment, the electrical characteristic providing device 150 acquires the corresponding measurement information via the communication unit 130c of the second electrical characteristic measuring device 130, but the acquisition is not limited to the above example as long as the corresponding measurement information can be acquired. For example, the corresponding measurement information such as the current measured by the second electrical characteristic measuring device 130 may be recorded in a predetermined recording medium, and the electrical characteristic providing device 150 may acquire the corresponding measurement information via the recording medium. Also, the user may directly input the corresponding measurement information such as the current measured by the second electrical characteristic measuring device 130 via the keyboard 150d of the electrical characteristic providing device 150.

[0065] (2) Acquisition of first electrical characteristic measurement information: In the above-mentioned first embodiment, the electrical characteristic providing device 150 acquires the corresponding measurement information via the communication unit 110c of the first electrical characteristic measuring device 110. However, as long as the first electrical characteristic measurement information can be acquired, the invention is not limited to the above-mentioned example. For example, the first electrical characteristic measurement information of the current measured by the first electrical characteristic measuring device 110 may be recorded in a predetermined recording medium, and the electrical characteristic providing device 150 may acquire the first electrical characteristic measurement via the recording medium. Also, the user may directly input the corresponding measurement information of the current measured by the first electrical characteristic measuring device 110 via the keyboard 150d of the electrical characteristic providing device 150.

[0066] (3) Corresponding measurement information: In the above-mentioned first embodiment, the corresponding measurement information is measured and generated using the second electrical characteristic measuring device 130, but it is not limited to the illustrated example as long as the corresponding measurement information can be generated. For example, if the correspondence between the first electrical characteristic and the second electrical characteristic for a specific measurement target E has already been provided, the corresponding measurement information may be generated from the correspondence.

[0067] (3) Types of corresponding measurement information: In the above-mentioned first embodiment, the current is shown as the first electrical characteristic, and the voltage and power factor are shown as the second electrical characteristic as the corresponding measurement information, but the present invention is not limited to the above examples. For example, only the power factor may be used as the second electrical characteristic. In this case, the voltage required to calculate the power consumption can be measured at another location, such as at one location on the switchboard of the entire factory, and it is not necessary to measure the voltage at the measurement target as the second electrical characteristic. In other words, the power consumption may be measured by separately acquiring other electrical characteristics such as voltage at the switchboard of the entire factory, and the second electrical characteristic provided by the electrical characteristic providing device and the other acquired electrical characteristics may be used.

[0068] Furthermore, in a factory located in a country with a stable power supply voltage, such as Japan, the voltage value may not be measured, and a predetermined voltage value (100V or 200V) may be provided to the electrical characteristic providing device as a quantitative value.

[0069] Furthermore, if the acquired first electrical characteristic, second electrical characteristic, and / or other electrical characteristic acquired based on the first electrical characteristic and the second electrical characteristic needs to be corrected, the first electrical characteristic, the second electrical characteristic, and / or other electrical characteristic may be calculated using information on the correction. For example, if correction is required depending on the temperature at the time of measurement, a temperature acquisition unit that acquires the temperature and information on the correction depending on the temperature may be arranged in the electrical characteristic providing device.

[0070] Furthermore, for example, if correction is required based on the aging of the measurement object, information for correction based on aging may be stored in the electrical characteristic providing device.

[0071] (4) Correspondence between the first electrical characteristic and the second electrical characteristic: In the above-mentioned embodiment 1, the correspondence between the first electrical characteristic and the second electrical characteristic is the current value, the voltage value, and the power factor value, but it is not limited to the illustrated example as long as it shows the correspondence between the two. For example, it may be a relational expression showing the correspondence between the two.

[0072] (5) Electrical characteristic providing information: In the above-mentioned first embodiment, the power consumption calculated using the voltage and power factor, which are the second electrical characteristics recorded and stored in the corresponding measurement information DB, was used as the electrical characteristic providing information, but it is not limited to the illustrated ones as long as it is related to the first electrical characteristic. For example, it may be carbon dioxide emission amount, operating status of the measurement target, abnormality of the inspection target, etc. When providing data calculated using the first electrical characteristic such as carbon dioxide emission amount, information necessary for the calculation of the data, etc. may be set in advance in the electrical characteristic providing device 150.

[0073] Furthermore, when providing the operating status of the measurement target, it is sufficient to determine whether the measurement target is operating or not based on the value of the current acquired as the first electrical characteristic, and calculate the operating time, operating rate, etc. Furthermore, when there are multiple measurement targets, the measurement targets may be grouped, for example, by process, and the operating status such as the operating time and operating rate may be calculated and provided for each measurement target or for each group.

[0074] Furthermore, if an abnormality is detected in the first electrical characteristic, the second electrical characteristic, etc. acquired by the electrical characteristic providing device, the detection of the abnormality may be provided.

[0075] (6) Display of Electrical Property Providing Information: In the above-mentioned first embodiment, the electrical property providing information is transmitted to the first electrical property measuring device 110 via the communication circuit 150h of the electrical property providing device 150, and is displayed by the first electrical property measuring device 110. However, the present invention is not limited to the above-mentioned example, as long as the electrical property providing information can be displayed. For example, the electrical property providing information may be displayed on the display 150f of the electrical property providing device 150. Also, the electrical property providing information may be transmitted to a communication device different from the first electrical property measuring device 110, for example, a mobile terminal of the user.

[0076] (7) Configuration of the first electrical characteristic measuring device 110 and the second electrical characteristic measuring device 130: In the above-mentioned first embodiment, the first electrical characteristic measuring device 110 and the second electrical characteristic measuring device 130 have the communication circuits 110c and 130c, respectively, but are not limited to those illustrated as long as they can measure predetermined electrical characteristics. For example, the first electrical characteristic measuring device 110 and the second electrical characteristic measuring device 130 do not need to have a communication circuit.

[0077] (8) Configuration of the electrical characteristic providing device 150: In the above-mentioned first embodiment, the electrical characteristic providing device 150 executes the corresponding measurement information generating process and the electrical characteristic providing process using the CPU 150a, but is not limited to the illustrated example as long as it executes each process. For example, each process may be executed using a dedicated logic circuit.

[0078] Furthermore, the function of the electrical characteristic providing device 150 may be integrated into the first electrical characteristic measuring device 110. This allows the second electrical characteristic to be provided simply by using the first electrical characteristic measuring device 110. Regarding the integration of the electrical characteristic providing device 150 into the first electrical characteristic measuring device 110, components realizing the functions of the electrical characteristic providing device 150 may be disposed inside the housing of the first electrical characteristic measuring device 110, or may be disposed in a housing different from that of the first electrical characteristic measuring device 110 and connected to the first electrical characteristic measuring device 110 via a predetermined interface.

[0079] (9) Measurement object E: In the above-mentioned first embodiment, the first electrical characteristic measuring device 110, the second electrical characteristic measuring device 130, and the electrical characteristic providing device 150 are used for the measurement object E that uses a three-phase AC three-wire power transmission method, but the first electrical characteristic measuring device 210, the second electrical characteristic measuring device 230, and the electrical characteristic providing device 150 may be used for the measurement object E that uses a single-phase AC two-wire power transmission method as shown in Fig. 10. Furthermore, the first electrical characteristic measuring device, the second electrical characteristic measuring device, and the electrical characteristic providing device may be used for the measurement object that uses another power transmission method such as DC.

[0080] (10) Corresponding measurement information generation processing, electrical characteristic provision processing: In the above-mentioned Example 1, the flowcharts of Figures 6 and 7 are shown as the corresponding measurement information generation processing, and the flowcharts of Figures 8 and 9 are shown as the electrical characteristic provision processing, respectively. However, as long as the purpose of each processing can be achieved, the processing is not limited to the example flowcharts. [Industrial Applicability]

[0081] The electrical characteristic providing system according to the present invention can be used in places where predetermined measurement objects are used, such as factories, warehouses, etc. [Explanation of symbols]

[0082] 100 Electrical characteristics providing system 110 First Electrical Property Measuring Device 110a Control unit 110b Measurement section 110c communication circuit 110d power circuit 130 Waste volume acquisition device 130a Control section 130b Measurement section 130c communication circuit 130d Power supply circuit 150 Electrical characteristics providing device 150a CPU 150b Memory 150c Storage 150d Keyboard 150e Mouse 150f Display Drive for 150g media 150h Communication circuit 150i power circuit

Claims

1. 1. An electrical characteristic providing device that provides a second electrical characteristic different from a first electrical characteristic of a measurement target measured using a first electrical characteristic providing device, a first electrical characteristic acquisition unit that acquires the first electrical characteristic; an electrical characteristic providing unit that provides the second electrical characteristic corresponding to the acquired first electrical characteristic, and / or another electrical characteristic calculated using the first electrical characteristic and / or the second electrical characteristic, by using corresponding measurement information indicating a correspondence relationship between the first electrical characteristic and the second electrical characteristic; An electrical characteristic providing device having:

2. The electrical characteristic providing device according to claim 1, further comprising: a second electrical characteristic acquisition unit that acquires the second electrical characteristic corresponding to the first electrical characteristic; An electrical characteristic providing device having:

3. 2. The electrical characteristic providing device according to claim 1, The first electrical characteristic acquisition unit acquiring the first electrical characteristic measured by the first electrical characteristic measuring device that measures the first electrical characteristic by measuring a physical quantity different from the first electrical characteristic of the measurement target; An electrical characteristic providing device comprising:

4. In the electrical characteristic providing device according to claim 3, The first electrical characteristic acquisition unit acquiring a current of the measurement target as the first electrical characteristic; An electrical characteristic providing device comprising:

5. 3. The electrical characteristic providing device according to claim 2, The second electrical characteristic acquisition unit acquiring the second electrical characteristic from the second electrical characteristic measuring device that measures the second electrical characteristic related to the first electrical characteristic of the measurement target; An electrical characteristic providing device comprising:

6. 6. The electrical characteristic providing device according to claim 5, The second electrical characteristic acquisition unit acquiring a voltage and / or a power factor of the measurement target as the second electrical characteristic; An electrical characteristic providing device comprising:

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