Power measurement system and power measurement unit arrangement method

Abstract

To provide a power measurement system and the like capable of suppressing the influence of noise on power measurement.SOLUTION: A power measurement system 1 includes a one-side extension unit, an other-side extension unit, and a main body unit 100 that acquires measurement data of a measurement target from the one-side extension unit and transfers the measurement data to the other-side extension unit. The one-side extension unit handles minute signals equal to or lower than a signal level handled by the other-side extension unit, and the other-side extension unit handles high-speed signals that have faster internal processing speeds than signals handled by the one-side extension unit. The one-side extension unit is arranged on one side of the main body unit 100, and the other-side extension unit is arranged on the other side of the main body unit 100.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a power measurement system and a power measurement unit arrangement method for measuring the amount of power in an AC circuit that is the measurement target, and more particularly to a power measurement system and a power measurement unit arrangement method that allow addition units to be added. [Background technology]

[0002] In recent years, there has been a demand for knowing the amount of power consumed in AC circuits at various locations in order to save energy, etc. To meet this demand, for example, Patent Document 1 discloses an expansion unit for a multi-circuit watt-hour meter, which includes an expansion unit connector that connects to the main connector of the multi-circuit watt-hour meter, an expansion unit current measurement circuit that measures the current at the measurement point of the AC circuit that is the measurement target, and an expansion unit communication processing circuit that processes communication signals transmitted and received to and from the multi-circuit watt-hour meter via the expansion unit connector. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4179097 Summary of the Invention [Problem to be solved by the invention]

[0004] In the expansion unit of the multi-circuit watt-hour meter according to the related art, the expansion unit current measurement circuit measures minute currents at measurement points in AC circuits, but does not include other functional expansions. The expansion unit according to the related art does not include an expansion unit that could be a noise source, and no consideration is given to noise sources. Therefore, for example, if an expansion unit that could be a noise source is provided, there is a risk that the signal-to-noise ratio of the measurement signal measuring the current will be reduced due to the influence of noise.

[0005] Therefore, an object of the present disclosure is to provide a power measurement system and a power measurement unit arrangement method that can suppress the influence of noise on power measurement. [Means for solving the problem]

[0006] A power measurement system according to one aspect of the present disclosure comprises a one-side expansion unit, a other-side expansion unit, and a main unit that acquires measurement data of a measurement target from the one-side expansion unit and transfers the measurement data to the other-side expansion unit, wherein the other-side expansion unit handles high-speed signals that have faster internal processing speeds than the signals handled by the one-side expansion unit, and the one-side expansion unit handles minute signals that are below the signal level handled by the other-side expansion unit, and the one-side expansion unit is arranged on one side of the main unit and the other-side expansion unit is arranged on the other side of the main unit.

[0007] Furthermore, a power measurement unit placement method according to one aspect of the present disclosure is a power measurement unit placement method capable of performing power measurement, which includes placing a main unit, placing a one-side expansion unit on one side of the main unit, and placing a other-side expansion unit on the other side of the main unit, wherein the main unit acquires measurement data of the measurement target from the one-side expansion unit and transfers the measurement data to the other-side expansion unit, and the other-side expansion unit handles high-speed signals with faster internal processing than the signals handled by the one-side expansion unit, and the one-side expansion unit handles minute signals below the signal level handled by the other-side expansion unit. [Effects of the Invention]

[0008] According to the power measurement system and the like of the present disclosure, the influence of noise on power measurement can be suppressed. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram showing a power measurement system according to an embodiment. [Figure 2] FIG. 2 is a block diagram showing a power measurement system according to an embodiment. [Figure 3] FIG. 3 is another block diagram showing a power measurement system according to an embodiment. [Figure 4] FIG. 4 is a block diagram illustrating yet another power measurement system according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] The embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, etc. shown in the following embodiments are merely examples and are not intended to limit the present disclosure. Furthermore, among the components in the following embodiments, components that are not recited in the independent claims are described as optional components.

[0011] Furthermore, each figure is a schematic diagram and is not necessarily an exact illustration. Therefore, for example, the scales and the like do not necessarily match in each figure. Furthermore, in each figure, substantially the same configurations are assigned the same reference numerals, and duplicate explanations are omitted or simplified.

[0012] Hereinafter, the embodiments will be specifically described with reference to the drawings.

[0013] (Embodiment) <Configuration and Function> First, a power measurement system 1 and a power measurement unit arrangement method according to the present embodiment will be described with reference to FIGS.

[0014] Fig. 1 is a schematic diagram showing a power measurement system 1 according to an embodiment of the present invention, and Fig. 2 is a block diagram showing the power measurement system 1 according to an embodiment of the present invention.

[0015] As shown in FIG. 1, the power measurement system 1 is mounted on a distribution board or panelboard installed in a facility such as an office building, a store, or a factory. The distribution board or panelboard can branch electricity received at a power receiving facility from the distribution system of a general electric utility into multiple indoor wirings and supply power to each load via the branched indoor wirings. For example, the power measurement system 1 can acquire measurement data measured by power measuring devices installed at the distribution board or panelboard at the branch of multiple indoor wirings. The power measurement system 1 can display the acquired power on a terminal device or transfer it to an external device.

[0016] Such a power measurement system 1 includes a one-side extension unit, a second-side extension unit, and a main unit 100.

[0017] The other-side expansion unit is disposed on the other side of the main unit 100, and the one-side expansion unit is disposed on one side of the main unit 100. In other words, the main unit 100 is disposed between the other-side expansion unit and the one-side expansion unit. In the field of power measurement systems 1, the other-side expansion unit is sometimes called an expansion unit, and the one-side expansion unit is sometimes called an extension unit.

[0018] The main unit 100 can acquire measurement data of the measurement target obtained by power measurement from one of the expansion units and transfer the measurement data to the other expansion unit. The measurement data is data indicating, for example, voltage, current, power, etc.

[0019] The main unit 100 has an integrated circuit 101 such as an MCU (Micro Controller Unit) or an MPU (Micro Processor Unit), a first main connector part 103a, and a second main connector part 103b.

[0020] The first main body connector portion 103a is arranged on one side of the main unit 100 and can be connected to a one-side expansion unit. The second main body connector portion 103b is arranged on the other side of the main unit 100 and can be connected to a other-side expansion unit. The integrated circuit 101 can acquire measurement data of the measurement target from the one-side expansion unit and transfer the measurement data to the other-side expansion unit. The integrated circuit 101 can also acquire data from the one-side expansion unit and transfer the data to the other-side expansion unit.

[0021] The one-side expansion unit is a unit that can acquire signals from a measurement system. The one-side expansion unit handles minute signals that are equal to or lower than the signal level handled by the other-side expansion unit. The one-side expansion unit transfers the acquired minute signals to the main unit 100 as measurement data. For example, the one-side expansion unit handles minute signals with a signal level of about several mV. The other-side expansion unit handles signals with a signal level of about several V.

[0022] The other-side expansion unit is a unit capable of data transfer, image drawing processing, etc. The other-side expansion unit handles high-speed signals that are internally processed faster than the signals handled by the one-side expansion unit. High-speed signals are signals with large amounts of data, such as data signals transferred within the power measurement system 1, data signals for communication with external devices, and data signals for displaying measurement data on the display unit 112. The other-side expansion unit handles high-speed signals that operate internally at a clock frequency of several MHz or more. Meanwhile, the one-side expansion unit handles signals that operate internally at a clock frequency ranging from several hundred Hz to several hundred kHz.

[0023] In this embodiment, the power measurement system 1 includes a plurality of one-side expansion units, a plurality of other-side expansion units, and a main unit 100. The plurality of other-side expansion units are arranged on the other side of the main unit 100, and the plurality of one-side expansion units are arranged on one side of the main unit 100. The main unit 100 is arranged between the plurality of other-side expansion units and the plurality of one-side expansion units, and is connected in series.

[0024] The multiple one-side expansion units are connected in a row such that the one-side expansion units that handle smaller signal levels of minute signals are located farther from the main unit 100. In other words, the multiple one-side expansion units are connected in series such that the signal levels of minute signals that the one-side expansion units handle become smaller as they are farther away from the main unit 100.

[0025] The multiple one-side expansion units may include a first one-side expansion unit and a second one-side expansion unit that handles a lower signal level than the first one-side expansion unit. In this case, the main unit 100, the first one-side expansion unit, and the second one-side expansion unit may be arranged and connected in this order.

[0026] Specifically, each of the multiple one-side expansion units has a first connector portion arranged on the main unit 100 side and a second connector portion arranged on the opposite side from the main unit 100 side. By arranging the one-side expansion unit on one side of the main unit 100, the first connector portion of the one-side expansion unit can be connected to the first main body connector portion 103a arranged on one side of the main unit 100. Furthermore, in the first one-side expansion unit and the second one-side expansion unit that are adjacent to each other among the multiple one-side expansion units, the second connector portion of the first one-side expansion unit can be connected to the first connector portion of the second one-side expansion unit. Therefore, in each of the multiple one-side expansion units, the second connector portion is arranged on the opposite side of the first connector portion.

[0027] The multiple one-side expansion units are, for example, a pulse output unit 10, a pulse input unit 40, an analog unit 20, and a power measurement unit 30. Specifically, the first one-side expansion unit and the second one-side expansion unit are, for example, a pulse output unit 10, a pulse input unit 40, an analog unit 20, and a power measurement unit 30. In these exemplary units, the signal levels of the minute signals handled by the pulse output unit 10, the analog unit 20, the power measurement unit 30, and the pulse input unit 40 in this order become gradually smaller. Therefore, the smaller the minute signals handled in the internal processing of the unit, the more susceptible it is to noise. In FIG. 2, the pulse output unit 10 is an example of a first one-side expansion unit, and the analog unit 20 is an example of a second one-side expansion unit. The multiple one-side expansion units include other known units.

[0028] The power measurement unit 30 has, for example, an integrated circuit 31 such as an MCU or MPU, a measurement section 32, a first connector section 33a arranged on the main unit 100 side, and a second connector section 33b arranged on the opposite side of the main unit 100 side.

[0029] The first connector 33a of the power measurement unit 30 can be connected directly or via a cable to the second connector of the one-side extension unit arranged on the main unit 100 side, and can also be connected directly or via a cable to the first main unit connector 103a arranged on one side of the main unit 100. In the case of a direct connection, the first connector 33a, the second connector 33b, and the first main unit connector 103a may be BtoB connectors. The measurement unit 32 acquires a voltage signal from the main unit 100 and, for example, measures the voltage, current, power, etc. at the branch points of multiple indoor wiring in a distribution board or panel board using the voltage signal. The integrated circuit 31 transfers measurement data indicating the voltage, current, power, etc. measured by the measurement unit 32 to the main unit 100 via the first connector 33a. In this embodiment, multiple one-side expansion units are arranged between the power measurement unit 30 and the main unit 100, and the power measurement unit 30 transfers measurement data to the main unit 100 via the multiple one-side expansion units.

[0030] The analog unit 20 has, for example, an integrated circuit 21 such as an MCU or MPU, an analog input section 22, a first connector section 23a arranged on the main unit 100 side, and a second connector section 23b arranged on the opposite side from the main unit 100 side.

[0031] The first connector 23a of the analog unit 20 can be connected directly or via a cable to the second connector of the one-side extension unit arranged on the main unit 100 side, and can be connected directly or via a cable to the first main unit connector 103a arranged on one side of the main unit 100. The analog input unit 22 outputs an analog signal input from an external device to the integrated circuit 21. The integrated circuit 21 transfers data input from the external device to the adjacent one-side extension unit via the first connector 23a, or transfers the data to the main unit 100 via the first connector 23a.

[0032] The pulse input unit 40 has, for example, an integrated circuit such as an MCU or MPU, an input section, a first connector section 43a arranged on the main unit 100 side, and a second connector section 43b arranged on the opposite side from the main unit 100 side.

[0033] The first connector 43a of the pulse input unit 40 can be connected directly or via a cable to the second connector of the one-side extension unit arranged on the main unit 100 side, and can be connected directly or via a cable to the first main unit connector 103a arranged on one side of the main unit 100. A pulse signal is input to the input unit from an external device. The integrated circuit transfers the pulse signal input to the input unit to the adjacent one-side extension unit via the first connector 43a, or to the main unit 100 via the first connector 43a.

[0034] The pulse output unit 10 has, for example, an integrated circuit 11 such as an MCU or MPU, a pulse output section 12, a first connector section 13a arranged on the main unit 100 side, and a second connector section 13b arranged on the opposite side from the main unit 100 side.

[0035] The first connector 13a of the pulse output unit 10 can be connected directly or via a cable to the second connector of the one-side extension unit arranged on the main unit 100 side, and can be connected directly or via a cable to the first main unit connector 103a arranged on one side of the main unit 100. The integrated circuit 11 acquires measurement data and converts it into a pulse signal. The pulse output unit 12 converts the measurement data measured by the power measurement unit 30 into pulses and outputs them to an external device.

[0036] The multiple other-side expansion units are connected in a row such that the faster the operating speed of the high-speed signals that the other-side expansion units handle, the farther they are located from the main unit 100. In other words, the multiple other-side expansion units are connected in series such that the operating speed of the high-speed signals that the other-side expansion units handle increases with increasing distance from the main unit 100.

[0037] The multiple other-side expansion units include a first other-side expansion unit and a second other-side expansion unit that handles high-speed signals at a faster operating speed than the first other-side expansion unit. In this case, the second other-side expansion unit, the first other-side expansion unit, and the main unit 100 are arranged and connected in this order.

[0038] The multiple other-side expansion units may further include a third other-side expansion unit that handles high-speed signals at a faster operating speed than the second other-side expansion unit. In this case, the third other-side expansion unit, the second other-side expansion unit, the first other-side expansion unit, and the main unit 100 may be arranged and connected in this order.

[0039] Specifically, each of the multiple other-side expansion units has a third connector portion arranged on the main unit 100 side and a fourth connector portion arranged on the opposite side from the main unit 100 side. By arranging the other-side expansion unit on the other side of the main unit 100, the third connector portion arranged on the main unit 100 side can be connected to the second main body connector portion 103b arranged on the other side of the main unit 100. Furthermore, in adjacent first other-side expansion unit and second other-side expansion unit, the fourth connector portion of the first other-side expansion unit can be connected to the third connector portion of the second other-side expansion unit. Therefore, in each of the multiple other-side expansion units, a fourth connector portion is arranged on the opposite side of the third connector portion. The fourth connector portion is, for example, a feed terminal.

[0040] The multiple other-side expansion units are, for example, a display unit 110, a reader / writer unit 120, an Ethernet-compatible unit 130, and a wireless unit 140. Specifically, the first other-side expansion unit and the second other-side expansion unit are, for example, a display unit 110, a reader / writer unit 120, and an Ethernet-compatible unit 130. The third other-side expansion unit has a third connector portion disposed on the main unit 100 side. The third other-side expansion unit is disposed at the farthest position from the main unit 100 on the other side of the main unit 100, and therefore does not need to have a fourth connector portion. In this case, the third connector of the other-side expansion unit cannot be connected to the third other-side expansion unit. The third other-side expansion unit is, for example, an Ethernet-compatible unit 130 and a wireless unit 140. 2, the display unit 110 is an example of a first other-side expansion unit, the reader / writer unit 120 is an example of a second other-side expansion unit, and the Ethernet-compatible unit 130 is an example of a second other-side expansion unit. In these exemplary units, the operating speed of high-speed signals handled increases in the order of the display unit 110, the reader / writer unit 120, the Ethernet-compatible unit 130, and the wireless unit 140. In other words, the operating speed of the internal processing of the units increases in the order of the display unit 110, the reader / writer unit 120, the Ethernet-compatible unit 130, and the wireless unit 140. The faster the operating speed of the internal processing of a unit, the more likely it is to generate noise, becoming a noise source. The multiple other-side expansion units include other known units.

[0041] For this reason, the third other-side extension unit, i.e., the wireless unit 140, is placed at the position among the multiple other-side extension units arranged at the farthest position from the main unit 100. In order to reduce the influence of noise on the one-side extension units as much as possible, the antenna section 144 of the third other-side extension unit is placed on the opposite side from the main unit 100.

[0042] The display unit 110 has, for example, an integrated circuit 111 such as an MCU or MPU, a display unit 112, a third connector unit 113a arranged on the main unit 100 side, and a fourth connector unit 113b arranged on the opposite side from the main unit 100 side.

[0043] The third connector 113a of the display unit 110 can be connected directly or via a cable to the fourth connector of the other-side extension unit arranged on the main unit 100 side, and can be connected directly or via a cable to the second main unit connector 103b arranged on the other side of the main unit 100. In the case of direct connection, the third connector 113a, the fourth connector 113b, and the second main unit connector 103b may be BtoB connectors. The integrated circuit 111 performs drawing processing to display measurement data transferred from one-side extension unit via the main unit 100 on the display unit 112. The display unit 112 displays the measurement data input to the third connector 113a.

[0044] The reader / writer unit 120 has, for example, an integrated circuit 121 such as an MCU or MPU, a card insertion port 122, a third connector portion 123a arranged on the main unit 100 side, and a fourth connector portion 123b arranged on the opposite side from the main unit 100 side.

[0045] The third connector 123a of the reader / writer unit 120 can be connected directly or via a cable to the fourth connector of the other-side expansion unit arranged on the main unit 100 side, and can be connected directly or via a cable to the second main unit connector 103b arranged on the other side of the main unit 100. A semiconductor memory such as an SD (Secure Digital) card or a USB (Universal Serial Bus) memory is connected to the card insertion slot 122. The integrated circuit 121 can write measurement data to a memory card connected to the card insertion slot 122 and read data from the memory card. When data from the memory card is read, the integrated circuit 121 transfers the data from the memory card to the adjacent other-side expansion unit via the third connector 123a or the fourth connector 123b.

[0046] The Ethernet-compatible unit 130 has a wired communication function and includes, for example, an integrated circuit 131 such as an MCU or MPU, an Ethernet connector 132, a third connector part 133a arranged on the main unit 100 side, and a fourth connector part 133b arranged on the opposite side from the main unit 100 side.

[0047] The third connector 133a of the Ethernet-compatible unit 130 can be connected directly or via a cable to the fourth connector of the other-side extension unit arranged on the main unit 100 side, and can be connected directly or via a cable to the second main unit connector 103b arranged on the other side of the main unit 100. A LAN connector provided on a LAN (Local Area Network) cable is connected to the Ethernet connector 132. The integrated circuit 131 can transfer data acquired via the Ethernet connector 132 to an adjacent other-side extension unit via the third connector 133a or the fourth connector 133b, and can transfer measurement data to an external device via the Ethernet connector 132.

[0048] The wireless unit 140 has a wireless communication function and includes, for example, an integrated circuit 141 such as an MCU or MPU, an antenna section 144, a wireless communication section 142, and a third connector section 143a arranged on the main unit 100 side.

[0049] The third connector 143a of the wireless unit 140 can be connected directly or via a cable to the fourth connector of the other-side extension unit arranged on the main unit 100 side, and can be connected directly or via a cable to the second main unit connector 103b arranged on the other side of the main unit 100. The antenna 144 is capable of wireless communication with an external device. The wireless communication unit 142 processes data received by the antenna 144 and outputs it to the integrated circuit 141, and processes measurement data to be transferred by the antenna 144 and outputs it to the antenna 144. The integrated circuit 141 can transfer data acquired via the antenna 144, etc., to an adjacent other-side extension unit via the third connector 143a, or transfer the measurement data to an external device via the antenna 144.

[0050] For example, Fig. 2 illustrates, as an example of multiple one-side expansion units, a pulse output unit 10, an analog unit 20, and a power measurement unit 30 arranged in order from the main unit 100 toward one side. In this case, the signal levels handled by the pulse output unit 10, the analog unit 20, and the power measurement unit 30 are reduced in this order. In other words, in Fig. 2, units that are more susceptible to noise are arranged farther away from the other-side expansion units.

[0051] As an example of multiple other-side expansion units, the display unit 110, reader / writer unit 120, and Ethernet-compatible unit 130 are shown lined up in order along a direction moving away from the main unit 100 toward the other side. In this case, the signals handled by the display unit 110, reader / writer unit 120, and Ethernet-compatible unit 130 in this order are faster. In other words, in Figure 2, units that are more likely to generate noise are arranged farther away from the one-side expansion units.

[0052] FIG. 3 is another block diagram showing the power measurement system 1 according to the embodiment.

[0053] 3, the Ethernet-compatible unit 130 may not have the fourth connector portion. In other words, since the Ethernet-compatible unit 130 is a unit that is prone to generating noise, if the Ethernet-compatible unit 130 is placed at the farthest position from the main unit 100 among the multiple other-side extension units, it may not have the fourth connector portion.

[0054] FIG. 4 is yet another block diagram showing the power measurement system 1 according to the embodiment.

[0055] As another example, Fig. 4 illustrates, as an example of multiple one-side expansion units, a pulse output unit 10, an analog unit 20, and a power measurement unit 30 arranged in order from the main unit 100 toward one side. In this case, the signal levels handled by the pulse output unit 10, the analog unit 20, and the power measurement unit 30 arranged in this order become smaller. In other words, in Fig. 4, units that are more susceptible to noise are arranged farther away from the other-side expansion units.

[0056] As an example of multiple other-side extension units, the reader / writer unit 120, the Ethernet-compatible unit 130, and the wireless unit 140 are illustrated, arranged in this order from the main unit 100 toward the other side. In this case, the signals handled by the reader / writer unit 120, the Ethernet-compatible unit 130, and the wireless unit 140 are arranged in this order so that they handle faster signals. In other words, in FIG. 4, units that are more likely to generate noise are arranged farther away from the one-side extension units. Furthermore, the antenna unit 144 of the wireless unit 140 receives and transmits radio waves, and therefore is likely to be a noise source. Therefore, the antenna unit 144 is arranged on the opposite side of the wireless unit 140 from the main unit 100 side. This allows the antenna unit 144 to be spaced farther away from the one-side extension units.

[0057] 2 to 4, the units to be combined are not limited to those shown in Fig. 2 to 4, and the combination may be changed as appropriate for each expansion unit on one side, or may be changed as appropriate for each expansion unit on the other side. Also, the number of units is not limited to three, and may be two or less, or four or more.

[0058] The number of pins in the connector section may be set so that the one-side extension units that handle small signals with large signal levels are arranged in order from the main unit 100 to one side.

[0059] For example, the pins of the third connector portion and the fourth connector portion of each of the multiple one-side expansion units may be different. For example, the number of pins between the fourth connector portion of the first one-side expansion unit and the third connector portion of the second one-side expansion unit may be set to be fewer than the number of pins between the first main body connector portion 103a and the third connector portion of the first one-side expansion unit, so that the main unit 100 and the second one-side expansion unit cannot be connected. In other words, the number of pins may be reduced for one-side expansion units that handle weak signals with low signal levels.

[0060] This allows one-side extension units that handle smaller signal levels to be placed farther away from the main unit 100 than the other one-side extension units.

[0061] The number of pins in the connector section may be set so that the other-side extension units, which handle high-speed signals at a slower operating speed, are arranged in order from the main unit 100 to the other side.

[0062] For example, the pins of the first connector portion and the second connector portion of each of the multiple other-side expansion units may be different. For example, the number of pins between the second connector portion of the first other-side expansion unit and the first connector portion of the second other-side expansion unit may be greater than the number of pins between the second main body connector portion 103b and the first connector portion of the first other-side expansion unit, so that the main unit 100 and the second other-side expansion unit cannot be connected. In other words, the number of pins may be greater for other-side expansion units that handle high-speed signals with faster operating speeds.

[0063] As a result, among the multiple other-side extension units, the other-side extension units that handle higher operating speeds of high-speed signals can be placed farther away from the main unit 100.

[0064] <Action and effect> Next, the effects of the power measurement system 1 and the power measurement unit arrangement method according to this embodiment will be described.

[0065] As described above, the power measurement system 1 of technology 1 relating to this embodiment comprises a one-side expansion unit, an other-side expansion unit, and a main unit 100 that acquires measurement data of the measurement target from the one-side expansion unit and transfers the measurement data to the other-side expansion unit, the one-side expansion unit handles minute signals that are below the signal level handled by the other-side expansion unit, and the other-side expansion unit handles high-speed signals that have faster internal processing than the signals handled by the one-side expansion unit, the one-side expansion unit is arranged on one side of the main unit 100, and the other-side expansion unit is arranged on the other side of the main unit 100.

[0066] According to this, the one-side expansion unit that handles minute signals and the other-side expansion unit that handles high-speed signals and generates noise are arranged via the main unit 100, so the one-side expansion unit and the other-side expansion unit can be arranged apart. Therefore, the other-side expansion unit that is a noise source can be arranged apart from the one-side expansion unit. This makes it possible to suppress the effect of noise from the other-side expansion unit on the one-side expansion unit that handles minute signals.

[0067] Therefore, according to this power measurement system 1, it is possible to suppress the influence of noise on power measurement.

[0068] Furthermore, in the power measurement system 1 of Technology 2 relating to this embodiment, a plurality of other-side expansion units are arranged on the other side of the main unit 100, and the multiple other-side expansion units are connected in a row such that the other-side expansion units that handle higher operating speeds of high-speed signals are arranged farther from the main unit 100, which is the power measurement system 1 described in Technology 1.

[0069] According to this, by arranging the other-side expansion unit with a high operating speed, which is a noise source, at a position far from the main unit 100, it is possible to arrange the one-side expansion unit arranged on one side of the main unit 100 far away from the other-side expansion unit with a high operating speed. Therefore, it is possible to suppress the influence of noise from the other-side expansion unit on the one-side expansion unit that handles minute signals.

[0070] Furthermore, in the power measurement system 1 of Technology 3 relating to this embodiment, a plurality of one-side expansion units are arranged on one side of the main unit 100, and the plurality of one-side expansion units are connected in a row such that the smaller the signal level of the minute signals they handle, the farther they are positioned from the main unit 100, which is the power measurement system 1 described in Technology 1 or 2.

[0071] According to this, the one-side expansion unit, which handles small signals at low signal levels, i.e., is susceptible to the effects of noise, is located far from the main unit 100, and can therefore be located as far as possible from the other-side expansion unit, which generates noise. This makes it possible to suppress the effects of noise from the other-side expansion unit on the one-side expansion unit that handles small signals.

[0072] Furthermore, in the power measurement system 1 of technology 4 relating to this embodiment, the multiple other-side expansion units include a first other-side expansion unit and a second other-side expansion unit that handles high-speed signals at a faster operating speed than the first other-side expansion unit, and the power measurement system 1 is described in any one of technologies 1 to 3, in which the second other-side expansion unit, the first other-side expansion unit, and the main unit 100 are arranged and connected in this order.

[0073] This allows the second other-side expansion unit, which has a faster operating speed, to be located farther from the main unit 100 than the first other-side expansion unit. Therefore, the louder the noise an other-side expansion unit generates, the farther it can be located from the one-side expansion unit. This makes it possible to suppress the effect of noise that the other-side expansion unit has on the one-side expansion unit that handles weak signals.

[0074] Furthermore, in the power measurement system 1 of Technology 5 according to this embodiment, the multiple other-side expansion units further include a third other-side expansion unit that handles high-speed signals at a faster operating speed than the second other-side expansion unit, and the power measurement system 1 is described in Technology 4, in which the third other-side expansion unit, the second other-side expansion unit, the first other-side expansion unit, and the main unit 100 are arranged and connected in this order.

[0075] According to this, although the third other-side expansion unit is a larger noise source than the first other-side expansion unit and the second other-side expansion unit, the third other-side expansion unit can be placed farther from the main unit 100 than the first other-side expansion unit and the second other-side expansion unit. Therefore, the third other-side expansion unit, which is a larger noise source, can be placed away from the one-side expansion unit. This makes it possible to suppress the effect of noise from the other-side expansion unit on the one-side expansion unit that handles minute signals.

[0076] Furthermore, in the power measurement system 1 of technology 6 relating to this embodiment, the multiple one-side expansion units include a first one-side expansion unit and a second one-side expansion unit that handles a smaller signal level than the first one-side expansion unit, and this is the power measurement system 1 described in any one of technologies 1 to 5, in which the main unit 100, the first one-side expansion unit, and the second one-side expansion unit are arranged and connected in this order.

[0077] This allows the one-side expansion unit, which handles a small signal level (i.e., is susceptible to noise), to be located far away from the other-side expansion unit, thereby suppressing the effect of noise from the other-side expansion unit on the one-side expansion unit that handles a small signal.

[0078] Furthermore, in the power measurement system 1 of technology 7 relating to this embodiment, each of the first one-side expansion unit and the second one-side expansion unit has a first connector portion 13a, 23a, 33a arranged on the main unit 100 side and a second connector portion 13b, 23b, 33b arranged on the opposite side from the main unit 100 side, and the first connector portion 13a, 23a, 33a of the second one-side expansion unit is connectable to the second connector portion 13b, 23b, 33b of the first one-side expansion unit, which is the power measurement system 1 described in technology 6.

[0079] This allows the first one-side expansion unit and the second one-side expansion unit to be placed side by side on one side of the main unit 100, so that units that are susceptible to noise can be placed away from each other.

[0080] Furthermore, in the power measurement system 1 of technology 8 relating to this embodiment, the other-side expansion unit has third connector parts 113a, 123a, 133a, 143a arranged on the main unit 100 side, and the one-side expansion unit has first connector parts 13a, 23a, 33a arranged on the main unit 100 side, and the first connector parts 13a, 23a, 33a are connectable to the first main unit connector part 103a arranged on one side of the main unit 100, and the third connector parts 113a, 123a, 133a, 143a are connectable to the second main unit connector part 103b arranged on the other side of the main unit 100, which is a power measurement system 1 described in any one of technologies 1 to 7.

[0081] According to this, the other-side expansion unit is arranged to connect to the other side of the main unit 100, and the one-side expansion unit is arranged to connect to one side of the main unit 100, so it is difficult for the other-side expansion unit and the one-side expansion unit to be arranged together. Therefore, the one-side expansion unit is less susceptible to the influence of noise from the other-side expansion unit.

[0082] Furthermore, in the power measurement system 1 of technology 9 relating to this embodiment, the first other-side expansion unit and the second other-side expansion unit are each the power measurement system 1 described in technology 5, having fourth connector parts 113b, 123b, 133b, 143b arranged on the opposite side from the main unit 100 side.

[0083] According to this, when multiple other-side expansion units are connected to the main unit 100, the fourth connector portions 113b, 123b, 133b, and 143b are arranged on the opposite side from the main unit 100, so that the multiple other-side expansion units are arranged side by side on the other side of the main unit 100. Therefore, the other-side expansion units, which are a source of noise, can be kept as far away as possible from the one-side expansion units.

[0084] Furthermore, in the power measurement system 1 of Technology 10 relating to this embodiment, the third other-side extension unit is the power measurement system 1 described in Technology 5, which has wireless communication capabilities, is positioned at the farthest position from the main unit 100 among the multiple other-side extension units, and has an antenna section 144 positioned on the opposite side from the main unit 100.

[0085] According to this, since the third other-side expansion unit having wireless communication function is likely to become a noise source, by placing the third other-side expansion unit at the farthest position from the main unit 100, the influence of noise from the third other-side expansion unit on the one-side expansion unit can be suppressed.

[0086] Furthermore, in the power measurement system 1 of technology 11 relating to this embodiment, the first other-side expansion unit and the second other-side expansion unit have third connector parts 113a, 123a, 133a, 143a arranged on the main unit 100 side and fourth connector parts 113b, 123b, 133b, 143b arranged on the opposite side from the main unit 100 side, and the third other-side expansion unit is a power measurement system 1 described in technology 5 having third connector parts 113a, 123a, 133a, 143a arranged on the main unit 100 side.

[0087] According to this, the other-side expansion unit is arranged and connected to the other side of the main unit 100, and the one-side expansion unit is arranged and connected to one side of the main unit 100, so that the other-side expansion unit and the one-side expansion unit are not arranged together. This makes it possible to suppress the influence of noise from the other-side expansion unit on the one-side expansion unit.

[0088] Furthermore, the power measurement unit placement method of technology 12 relating to this embodiment is a power measurement unit placement method capable of performing power measurement, and includes placing a main unit 100, placing a one-side expansion unit on one side of the main unit 100, and placing a other-side expansion unit on the other side of the main unit 100, wherein the main unit 100 acquires measurement data of the measurement target from the one-side expansion unit and transfers the measurement data to the other-side expansion unit, and the other-side expansion unit handles high-speed signals with faster internal processing than the signals handled by the one-side expansion unit, and the one-side expansion unit handles minute signals below the signal level handled by the other-side expansion unit.

[0089] This power measurement unit arrangement method also provides the same effects as those described above.

[0090] (others) While the power measurement system and the like according to the present disclosure have been described above based on the above-mentioned embodiments, the present disclosure is not limited to these embodiments. As long as the modifications do not deviate from the spirit of the present disclosure, various modifications conceivable by those skilled in the art may also be included within the scope of the present disclosure.

[0091] For example, in the above-described power measurement system, all or part of the components of each unit may be configured with dedicated hardware, or may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU (Central Processing Unit) or a processor reading and executing a software program recorded on a recording medium such as an HDD (Hard Disk Drive) or semiconductor memory.

[0092] The division of functional blocks in the block diagram is an example, and multiple functional blocks may be realized as a single functional block, one functional block may be divided into multiple blocks, or some functions may be moved to another functional block.Furthermore, the functions of multiple functional blocks having similar functions may be processed in parallel or in time-sharing by a single piece of hardware or software.

[0093] In addition, this disclosure also includes forms obtained by making various modifications to the above embodiments that a person skilled in the art would think of, and forms realized by arbitrarily combining the components and functions of the embodiments within the scope that does not deviate from the intent of this disclosure. [Explanation of symbols]

[0094] 1. Power measurement system 10 Pulse output unit (one-side expansion unit, 1st one-side expansion unit, 2nd one-side expansion unit) 13a, 23a, 33a First connector part 13b, 23b, 33b Second connector part 20 Analog units (one-side expansion unit, first one-side expansion unit, second one-side expansion unit) 30 Power measurement units (one-side expansion unit, first one-side expansion unit, second one-side expansion unit) 40 Pulse input unit (one-side expansion unit, 1st one-side expansion unit, 2nd one-side expansion unit) 100 Main unit 113a, 123a, 133a, 143a Third connector part 113b, 123b, 133b, 143b 4th connector part 110 Display unit (other-side expansion unit, 1st other-side expansion unit, 2nd other-side expansion unit) 120 Reader / Writer Unit (Other Side Expansion Unit, 1st Other Side Expansion Unit, 2nd Other Side Expansion Unit) 130 Ethernet compatible units (other-side expansion unit, 1st other-side expansion unit, 2nd other-side expansion unit, 3rd other-side expansion unit) 140 wireless units (other-side expansion unit, first other-side expansion unit, second other-side expansion unit, third other-side expansion unit) 144 Antenna section

Claims

1. One side expansion unit; The other side expansion unit, a main unit that acquires measurement data of a measurement target from the one-side extension unit and transfers the measurement data to the other-side extension unit, The other-side extension unit handles high-speed signals that are internally processed faster than signals handled by the one-side extension unit, The one-side expansion unit handles a minute signal that is equal to or lower than the signal level handled by the other-side expansion unit, The one-side extension unit is disposed on one side of the main unit. The other-side extension unit is disposed on the other side of the main unit. Power measurement system.

2. a plurality of other-side extension units are arranged on the other side of the main unit; The plurality of other-side extension units are connected in a line such that the other-side extension units that handle higher operating speeds of high-speed signals are located farther from the main unit. The power measurement system according to claim 1 .

3. A plurality of the one-side extension units are arranged on one side of the main unit, The plurality of one-side extension units are connected in a line such that the one-side extension units that handle smaller signal levels are located farther from the main unit. The power measurement system according to claim 1 or 2.

4. the plurality of other-side extension units include a first other-side extension unit and a second other-side extension unit that handles high-speed signals at a faster operating speed than the first other-side extension unit; The second other-side extension unit, the first other-side extension unit, and the main unit are arranged and connected in this order. The power measurement system according to claim 1 or 2.

5. the plurality of other-side extension units further include a third other-side extension unit that handles high-speed signals at a faster operating speed than the second other-side extension unit; The third other-side extension unit, the second other-side extension unit, the first other-side extension unit, and the main unit are arranged and connected in this order. The power measurement system according to claim 4 .

6. the plurality of one-side extension units include a first one-side extension unit and a second one-side extension unit that handles a signal level lower than that of the first one-side extension unit, The main unit, the first one-side extension unit, and the second one-side extension unit are arranged and connected in this order. The power measurement system according to claim 1 .

7. each of the first one-side extension unit and the second one-side extension unit has a first connector portion disposed on the main unit side and a second connector portion disposed on the opposite side to the main unit side; The first connector portion of the second one-side extension unit is connectable to the second connector portion of the first one-side extension unit. The power measurement system according to claim 6 .

8. the one-side extension unit has a first connector portion disposed on the main unit side, the other-side extension unit has a third connector portion disposed on the main unit side, The first connector portion is connectable to a first main body connector portion disposed on one side of the main body unit. the third connector portion is connectable to a second main body connector portion disposed on the other side of the main body unit, The power measurement system according to claim 1 .

9. Each of the first other-side extension unit and the second other-side extension unit has a fourth connector portion disposed on the opposite side from the main unit side. The power measurement system according to claim 5 .

10. The third other-side extension unit is It has wireless communication capabilities, The other-side extension units are arranged at a position farthest from the main unit among the plurality of other-side extension units, An antenna portion is disposed on the opposite side to the main unit side. The power measurement system according to claim 5 .

11. the first other-side extension unit and the second other-side extension unit each have a third connector portion disposed on the main unit side and a fourth connector portion disposed on the opposite side to the main unit side, The third other-side extension unit has a third connector portion disposed on the main unit side. The power measurement system according to claim 5 .

12. A power measurement unit arrangement method capable of performing power measurement, comprising: disposing a main unit; disposing a one-side extension unit on one side of the main unit; and disposing an other-side extension unit on the other side of the main unit, the main unit acquires measurement data of the measurement target from the one-side extension unit and transfers the measurement data to the other-side extension unit; The other-side extension unit handles high-speed signals that are internally processed faster than signals handled by the one-side extension unit, The one-side expansion unit handles a minute signal that is equal to or lower than the signal level handled by the other-side expansion unit. Power measurement unit placement method.

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