CN110456301A - Data analyze situ metrology device tester - Google Patents
Data analyze situ metrology device tester Download PDFInfo
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- CN110456301A CN110456301A CN201910608354.7A CN201910608354A CN110456301A CN 110456301 A CN110456301 A CN 110456301A CN 201910608354 A CN201910608354 A CN 201910608354A CN 110456301 A CN110456301 A CN 110456301A
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- 238000005070 sampling Methods 0.000 claims abstract description 17
- 230000003750 conditioning effect Effects 0.000 claims abstract description 9
- 230000003321 amplification Effects 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 22
- 230000000087 stabilizing effect Effects 0.000 claims description 19
- 229910052715 tantalum Inorganic materials 0.000 claims description 13
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 11
- 230000036772 blood pressure Effects 0.000 claims description 9
- 230000009466 transformation Effects 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 5
- 230000003993 interaction Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
Situ metrology device tester is analyzed in public data of the present invention, including DC/DC isolated power supply and sequentially connected signal sampling module, signal conditioning module, A/D conversion module, FPGA module, DSP module and ARM module, signal conditioning module includes signal frequency overlapped-resistable filter and gain-programmed amplifier interconnected, signal sampling module includes the electric current gear switching circuit connecting with the input terminal of signal frequency overlapped-resistable filter, electric current gear switching circuit is provided at least four switching gear, DSP module is also connect with electric current gear switching circuit and gain-programmed amplifier respectively, and electric current gear switching circuit carries out gear switching and control gain-programmed amplifier carries out signal amplification for controlling.DSP module can carry out the automatic switchover of electric current gear according to the size of sample rate current, and be amplified by gain-programmed amplifier to sample rate current, and the measurement accuracy of on-site calibrator can be improved；Using DC/DC isolated power supply, the output ripple of power supply is reduced, improves the stability of system.
Description
Technical field
The present invention relates to Application of Power Metering Instruments fields, and in particular to data analyze situ metrology device tester.
Background technique
Electric energy meter on-site calibrator is the test equipment for integrating electric parameter metering, electrical energy meter calibration and wiring judgement.
The most basic function of electric energy meter on-site calibrator is electric energy meter error field-checking, and the grade of errors of on-site calibrator is divided into 0.01
Grade, 0.02 grade, 0.05 grade, 0.1 grade, 0.2 grade and 0.5 grade, the numerical value of grade of errors is smaller, and required precision is higher, to live school
The performance requirement for testing instrument is higher.
Currently, the on-site calibrator on domestic market, grade of errors is generally 0.1 grade or 0.2 grade, be on the one hand because
0.1 grade or 0.2 grade of grade of errors has been able to meet the needs of most field-checking test site, be on the other hand because
It is required for precision and stability of the higher grade of errors to on-site calibrator higher.The field-checking of electric energy meter is common in power grid
To the calibrating of installing type electric energy meter under load condition, the detection electric current of tester is often much smaller than the Calibrated current of electric energy meter (amount
Journey), and the calibration with current signal electric current of on-site calibrator only has two gears of 1A and 5A at present, low measurement accuracy, it is difficult to meet more
The requirement of high grade of errors.
The measurement accuracy of on-site calibrator is higher, also higher to the stability requirement of circuit system.Live school on the market
Testing instrument generally uses Switching Power Supply to power, and the output of Switching Power Supply, there are ripple, ripple is the voltage wave due to Switching Power Supply
It is dynamic and caused by a kind of phenomenon because Switching Power Supply is usually to be formed by links such as the rectified pressure stabilizings of AC power source, this is just
Inevitably how much some Alternating Components, this AC compounent being superimposed upon in DC stabilization amount are had in DC stabilization amount
Just referred to as ripple, ripple can reduce the efficiency of power supply and influence the stability of on-site calibrator circuit system.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides data and analyzes situ metrology device tester, for solving at present
The not high problem of field-checking accuracy class.
The contents of the present invention are as follows:
Data analyze situ metrology device tester, including sequentially connected signal sampling module, signal conditioning module, A/
D conversion module, FPGA module, DSP module and ARM module, further include respectively with the signal sampling module, the signal condition
The DC/DC isolated power supply that module, the FPGA module, the DSP module are connected with the ARM module, the signal condition mould
Block includes signal frequency overlapped-resistable filter and gain-programmed amplifier interconnected, and the signal sampling module includes and the letter
The electric current gear switching circuit of the input terminal connection of number frequency overlapped-resistable filter, electric current gear switching circuit are provided at least four and cut
Shift position, the DSP module are also connect with electric current gear switching circuit and gain-programmed amplifier respectively, and for controlling electric current
Gear switching circuit carries out gear switching and control gain-programmed amplifier carries out signal amplification.
Preferably, the signal sampling module further includes Current Mutual Inductance sample circuit and split-core type meter sample circuit, Current Mutual Inductance
Sample circuit and split-core type meter sample circuit pass through switching switching circuit respectively and connect with the electric current gear switching circuit.
Preferably, the electric current gear switching circuit includes that sequentially connected microprocessor U31, latch and switch are single
Member, microprocessor U31 are also connect with the DSP module, and switch unit includes the switch chip at least four channels, the first partial pressure
Circuit, the first amplifier U16 and the second amplifier U17, the non-inverting input terminal of the second amplifier U17 are connect with the switching switching circuit,
The inverting input terminal of second amplifier U17 is grounded by resistance R50, the output end of the second amplifier U17 and the anti-aliasing filter of the signal
The connection of wave device, the first bleeder circuit, switch chip and the first amplifier U16 are sequentially connected and form the feedback loop of the second amplifier U17
The control terminal on road, switch chip is connect with latch.
Preferably, first bleeder circuit includes being sequentially connected and accuracy value is 0.05% resistance R109, resistance
R59, resistance R60, resistance R61 and resistance R68.
Preferably, 4 differential paths built in the gain-programmed amplifier, and for providing 1 times, 4 times, 16 times and 64 times
Gain.
Preferably, the DC/DC isolated power supply includes sequentially connected controllable switch unit, isolation voltage transformation unit and voltage
Output unit, voltage output unit include lowering and stabilizing blood pressure unit for exporting first voltage and for exporting the whole of second voltage
Filter unit is flowed, isolation voltage transformation unit is connected by the control terminal of control logic unit and controllable switch unit.
Preferably, the control logic unit and the controllable switch unit are integrated in inside DC/DC control chip U2,
The isolation voltage transformation unit uses the high frequency transformer T1 including two groups of vice-side windings, the first vice-side winding of high frequency transformer T1
It is connect with the lowering and stabilizing blood pressure unit, the second vice-side winding of high frequency transformer T1 is connect with voltage output unit.
Preferably, the lowering and stabilizing blood pressure unit includes voltage stabilizing chip U1, and the input terminal of voltage stabilizing chip U1 is connected with the first filter
Wave device, first filter include tantalum the capacitor E1 and C2 being connected in parallel, and the output end of voltage stabilizing chip U1 is connected with the second filtering
Device, second filter include the LC filter circuit being made of inductance L1, tantalum capacitor E2 and capacitor C3, the rectification filtering unit packet
It includes by diode D5, D6, D7 and D8 rectifier bridge formed and the third filter and the 4th filter that are connect with rectifier bridge, the
Three filters include the capacitor C5 being connected in parallel and tantalum capacitor E5, the 4th filter include the tantalum capacitor E6 being connected in parallel and
Capacitor C8.
The invention has the benefit that the present invention will be electric using at least four gear compared with existing 2 switchings gear
The measurement unit value of stream further refines, and is conducive to the precision for improving weak-signal measurement, DSP module can be according to the big of sample rate current
The small automatic switchover for carrying out electric current gear, and sample rate current is amplified by gain-programmed amplifier, be conducive to improve existing
The measurement accuracy of field tester；The present invention uses DC/DC isolated power supply, reduces the output ripple of power supply, improves circuit system
Stability.
Detailed description of the invention
Fig. 1 show the general principles block diagram of the embodiment of the present invention；
Fig. 2 show the microprocessor circuit of electric current gear switching circuit of the embodiment of the present invention；
Fig. 3 show the latch circuit of electric current gear switching circuit of the embodiment of the present invention；
Fig. 4 show the circuit diagram of the first switch unit of electric current gear switching circuit of the embodiment of the present invention；
Fig. 5 show the circuit diagram of the second switch unit of voltage gear switching circuit of the embodiment of the present invention；
Fig. 6 show the functional block diagram of DC/DC isolated power supply of the embodiment of the present invention；
Fig. 7 show the circuit diagram of DC/DC isolated power supply of the embodiment of the present invention.
Specific embodiment
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Fig. 1 is please referred to, data disclosed in the present embodiment analyze situ metrology device tester, including sequentially connected signal
Sampling module 1, signal conditioning module 2, A/D conversion module 3, FPGA module 4, DSP module 5 and ARM module 6, in the present embodiment
The converter of A/D conversion module 3 including model AD7656, FPGA module 4 is using the chip of model XC3S200A and its outer
Circuit is enclosed, DSP module 5 is using the processor and its peripheral circuit of model TMS320F2812, and ARM module 6 is using ARM processing
Device and its peripheral circuit.FPGA module 4 is used to receive the voltage, electric current and pulse signal of tested electric energy meter, and calculates accumulative
Then voltage signal, current signal and accumulative energy value are transferred to DSP module 5 by energy value, DSP module 5 is according to voltage signal
Electric work parameter is calculated with current signal, and calculates the error amount of standard energy value and electric energy meter according to accumulative energy value,
Then standard energy value and error amount are sent to ARM module 6, ARM module 6 is connected with expansion connection module and human-computer interaction mould
Block, ARM module 6 include difference for carrying out Interface Expanding, the display of data and storage and human-computer interaction, expansion connection module
RS232 communication unit, RS485 communication unit, carrier communication unit, WIFI communication unit and the USB connecting with ARM module 6 are logical
Believe unit, human-computer interaction module includes the capacitive touch screen connecting with ARM module 6, and ARM module 6 passes through capacitive touch screen
Realize human-computer interaction, compared with the man-machine interaction mode of the display screen of existing tester and keyboard, the display screen of the present embodiment
Accounting is bigger, displayable data are more, apparent and operation is more convenient.
Referring to figure 2. -4, signal conditioning module 2 includes signal frequency overlapped-resistable filter 2-1 interconnected and programme-controlled gain
Amplifier 2-2, the signal frequency overlapped-resistable filter 2-1 of the present embodiment use existing frequency overlapped-resistable filter, and signal sampling module 1 is wrapped
It includes Current Mutual Inductance sample circuit 1-3, split-core type meter sample circuit 1-4 and is connect with the input terminal of signal frequency overlapped-resistable filter 2-1
Electric current gear switching circuit 1-6, Current Mutual Inductance sample circuit 1-3 and split-core type meter sample circuit 1-4 pass through switching switching circuit respectively
1-5 is connect with electric current gear switching circuit 1-6, and knob type switch or key switch, electric current gear can be used in switching switching circuit 1-5
Position switching circuit 1-6 is provided with 4 switching gears, and the present embodiment is using 5A electric current as standard, the standard of 4 switching gear full scales
Point is respectively 1 times keep off electric current 5A, 4 times keep off electric current 1.25A (a quarter of 5A), 16 (16 minutes of 5A times keep off electric current 0.3125A
One of) and 64 times keep off electric current 0.0781A (60 a quarters of 5A).Compared with existing 2 switchings gear, the present embodiment will
The measurement unit value of electric current further refines, and is conducive to the precision for improving weak-signal measurement.Electric current gear switching circuit 1-6 includes
Sequentially connected microprocessor U31, latch U32 and first switch unit, microprocessor U31 are also connect with DSP module 5, this
The microprocessor U31 of embodiment uses the chip of model AT89C2051, and latch U32 uses signal for the core of 74HC595
Piece, first switch unit include the first switch chip U40, the first bleeder circuit 1-61, the first amplifier U16 at least four channels
With the second amplifier U17, first switch chip U40 using model ADG1334BRSZ four-way switch (U40A, U40B, U40C and
U40D), the non-inverting input terminal of the second amplifier U17 is connect with switching switching circuit 1-5, and the inverting input terminal of the second amplifier U17 is logical
Resistance R50 ground connection is crossed, the output end of the second amplifier U17 is connect with signal frequency overlapped-resistable filter 2-1, the first bleeder circuit 1-61,
First switch chip U40 and the first amplifier U16 is sequentially connected and forms the feedback control loop of the second amplifier U17, first switch chip
The control terminal of U40 is connect with latch U32.First bleeder circuit 1-61 includes being sequentially connected and accuracy value is 0.05% electricity
R109, resistance R59, resistance R60, resistance R61 and resistance R68 are hindered, the present embodiment is electric using the precision that accuracy value is 0.05%
Resistance is conducive to improve the precision of the first each gear of bleeder circuit 1-61, to improve the accuracy of sample rate current.
The gain-programmed amplifier 2-2 of the present embodiment uses the CMOS analog multiplexer of model OP07, programme-controlled gain
4 differential paths built in amplifier 2-2, and the gain for providing 1 times, 4 times, 16 times and 64 times, gain-programmed amplifier 2-2
4 differential paths be adapted respectively with 4 switching gears, secondary amplification, gain error and distortion can be carried out to sample rate current
It spends small.DSP module 5 is also connect with electric current gear switching circuit 1-6 and gain-programmed amplifier 2-2 respectively, and DSP module 5 can root
According to the sample rate current of current sampling circuit carries out gear switching control to electric current gear switching circuit 1-6, control programme-controlled gain is put
Big device 2-2 carries out gain selection and control gain-programmed amplifier 2-2 and sample rate current is carried out signal amplification.According to sampling electricity
The gain that the size for flowing signal automatically switches gear and selection is adapted, advantageously reduces the difficulty and raising of weak-signal measurement
The precision of measurement.
Fig. 1 and Fig. 5 are please referred to, signal further includes voltage sampling circuit 1-1 and voltage gear switching circuit 1- using module
2, voltage gear switching circuit 1-2 include the second switch unit connecting with latch U32, and second switch unit includes at least four
The second switch chip 37 in a channel, the second bleeder circuit 1-61, third amplifier U8 and four high guaily unit U9, second switch chip
U37 uses the four-way switch (U37A, U37B, U37C and U37D) of model ADG1334BRSZ, voltage gear switching circuit 1-2
4 switching gears are provided with, wherein resistance R108, resistance R38, resistance R39, resistance R40 and resistance R47 are all made of accuracy value and are
0.05% precision resistance is conducive to the precision for improving voltage measurement.
The particular circuit configurations of the Current Mutual Inductance sample circuit 1-3 and voltage sampling circuit 1-1 of the present embodiment can refer to existing
There is technology.
Please refer to Fig. 6, the on-site calibrator of the present embodiment further include respectively with signal sampling module 1, signal conditioning module
2, the DC/DC isolated power supply that FPGA module 4, DSP module 5 and ARM module 6 connect, DC/DC isolated power supply includes sequentially connected
Controllable switch unit 7-1, isolation voltage transformation unit 7-2 and voltage output unit 7-3, voltage output unit 7-3 includes for exporting
Voltage transformation unit 7- is isolated in the lowering and stabilizing blood pressure unit 7-31 of first voltage and rectification filtering unit 7-32 for exporting second voltage
2 are connect by control logic unit 7-4 with the control terminal of controllable switch unit 7-1.
Fig. 7, control logic unit 7-4 and controllable switch unit 7-1 is please referred to be integrated in DC/DC control chip U2
Portion, DC/DC control the model LT3439EFE of chip U2, and isolation voltage transformation unit 7-2 uses the high frequency including two groups of vice-side windings
The first vice-side winding of transformer T1, high frequency transformer T1 are connect with lowering and stabilizing blood pressure unit 7-31, and the second of high frequency transformer T1
Vice-side winding is connect with voltage output unit 7-3.The present embodiment uses high frequency transformer T1, makes primary side winding and vice-side winding
It is electrical completely insulated, also it is isolated input circuit and output loop.In addition, the working frequency of the transformer of the present embodiment is high
(500KHz), core volume is small, using the big feature of the high-frequency loss of its magnetic core, to inhibit high frequency spurs are incoming to control back
The anti-interference ability of circuit is improved on road, guarantees the stability of on-site calibrator circuit system.
Lowering and stabilizing blood pressure unit 7-31 includes voltage stabilizing chip U1, and the input terminal of voltage stabilizing chip U1 is connected with first filter 7-
33, first filter 7-33 include tantalum the capacitor E1 and C2 being connected in parallel, and the output end of voltage stabilizing chip U1 is connected with the second filter
Wave device 7-34, second filter 7-34 include the LC filter circuit being made of inductance L1, tantalum capacitor E2 and capacitor C3, rectifying and wave-filtering
Unit 7-32 includes by diode D5, D6, D7 and D8 rectifier bridge formed and the third filter 7-35 connecting with rectifier bridge
Schottky diode is used with the 4th filter 7-36, diode D5, D6, D7 and D8, the leakage current of Schottky diode is small, has
Conducive to the ripple for reducing output, third filter 7-35 includes the capacitor C5 being connected in parallel and tantalum capacitor E5, the 4th filter
7-36 includes the tantalum capacitor E6 and capacitor C8 being connected in parallel, and the leakage current of tantalum capacitor is small, advantageously reduces the ripple of output, can
To significantly improve power-efficient.
The above, only presently preferred embodiments of the present invention, the invention is not limited to above embodiment, as long as
It reaches technical effect of the invention with identical means, all should belong to protection scope of the present invention.In protection model of the invention
Its technical solution and/or embodiment can have a variety of different modifications and variations in enclosing.
Claims (8)
1. data analyze situ metrology device tester, including sequentially connected signal sampling module (1), signal conditioning module
(2), A/D conversion module (3), FPGA module (4), DSP module (5) and ARM module (6), it is characterised in that: further include respectively with
The signal sampling module (1), the signal conditioning module (2), the FPGA module (4), the DSP module (5) and described
The DC/DC isolated power supply of ARM module (6) connection, the signal conditioning module (2) includes signal anti-aliasing filter interconnected
Device (2-1) and gain-programmed amplifier (2-2), the signal sampling module (1) include and the signal frequency overlapped-resistable filter (2-
1) the electric current gear switching circuit (1-6) of input terminal connection, electric current gear switching circuit (1-6) are provided at least four switching
Gear, the DSP module (5) also connect with electric current gear switching circuit (1-6) and gain-programmed amplifier (2-2) respectively, and
For controlling, electric current gear switching circuit (1-6) carries out gear switching and control gain-programmed amplifier (2-2) carries out signal
Amplification.
2. data as described in claim 1 analyze situ metrology device tester, it is characterised in that: the signal sampling module
It (1) further include Current Mutual Inductance sample circuit (1-3) and split-core type meter sample circuit (1-4), Current Mutual Inductance sample circuit (1-3) and split-core type meter
Sample circuit (1-4) is connect by switching switching circuit (1-5) with the electric current gear switching circuit (1-6) respectively.
3. data as claimed in claim 2 analyze situ metrology device tester, it is characterised in that: the electric current gear switching
Circuit (1-6) includes sequentially connected microprocessor U31, latch U32 and first switch unit, microprocessor U31 also with institute
DSP module (5) connection is stated, first switch unit includes first switch chip U40, first bleeder circuit at least four channels
(1-61), the first amplifier U16 and the second amplifier U17, the non-inverting input terminal of the second amplifier U17 and the switching switching circuit (1-
5) it connects, the inverting input terminal of the second amplifier U17 is grounded by resistance R50, and the output end and the signal of the second amplifier U17 is anti-
Aliasing filter (2-1) connection, the first bleeder circuit (1-61), first switch chip U40 and the first amplifier U16 are sequentially connected simultaneously
The feedback control loop of the second amplifier U17 is formed, the control terminal of first switch chip U40 is connect with latch U32.
4. data as claimed in claim 3 analyze situ metrology device tester, it is characterised in that: first bleeder circuit
(1-61) includes being sequentially connected and accuracy value is 0.05% resistance R109, resistance R59, resistance R60, resistance R61 and resistance
R68。
5. data as claimed in claim 1 or 3 analyze situ metrology device tester, it is characterised in that: the programme-controlled gain
4 differential paths built in amplifier (2-2), and the gain for providing 1 times, 4 times, 16 times and 64 times.
6. on-site calibrator as described in claim 1, it is characterised in that: the DC/DC isolated power supply includes sequentially connected
Controllable switch unit (7-1), isolation voltage transformation unit (7-2) and voltage output unit (7-3), voltage output unit (7-3) include
Rectification filtering unit (7-32) for exporting the lowering and stabilizing blood pressure unit (7-31) of first voltage and for exporting second voltage, every
It is connect by control logic unit (7-4) with the control terminal of controllable switch unit (7-1) from voltage transformation unit (7-2).
7. data as claimed in claim 6 analyze situ metrology device tester, it is characterised in that: the control logic unit
(7-4) and the controllable switch unit (7-1) are integrated in inside DC/DC control chip U2, the isolation voltage transformation unit (7-2)
Using the high frequency transformer T1 including two groups of vice-side windings, the first vice-side winding of high frequency transformer T1 and the lowering and stabilizing blood pressure list
First (7-31) connection, the second vice-side winding of high frequency transformer T1 are connect with voltage output unit (7-3).
8. data as claimed in claim 7 analyze situ metrology device tester, it is characterised in that: the lowering and stabilizing blood pressure unit
(7-31) includes voltage stabilizing chip U1, and the input terminal of voltage stabilizing chip U1 is connected with first filter (7-33), first filter (7-
It 33) include tantalum the capacitor E1 and C2 being connected in parallel, the output end of voltage stabilizing chip U1 is connected with second filter (7-34), and second
Filter (7-34) includes the LC filter circuit being made of inductance L1, tantalum capacitor E2 and capacitor C3, the rectification filtering unit (7-
It 32) include by diode D5, D6, D7 and D8 rectifier bridge formed and the third filter (7-35) being connect with rectifier bridge and
Four filters (7-36), third filter (7-35) include the capacitor C5 being connected in parallel and tantalum capacitor E5, the 4th filter (7-
It 36) include the tantalum capacitor E6 and capacitor C8 being connected in parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910608354.7A CN110456301A (en) | 2019-07-08 | 2019-07-08 | Data analyze situ metrology device tester |
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| CN201910608354.7A CN110456301A (en) | 2019-07-08 | 2019-07-08 | Data analyze situ metrology device tester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111721988A (en) * | 2020-06-28 | 2020-09-29 | 珠海普斯雷电子科技有限公司 | Measuring instrument and method for electric quantity compensation of metering device |
| CN113884963A (en) * | 2021-09-24 | 2022-01-04 | 广东电网有限责任公司 | High-precision direct-current standard electric energy meter |
| CN115420942A (en) * | 2022-11-04 | 2022-12-02 | 浙江正泰物联技术有限公司 | Electric energy measuring device and power supply system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012142736A1 (en) * | 2011-04-22 | 2012-10-26 | 四川电力科学研究院 | Field integral detecting system of three-phase electric energy measuring system of electric distribution network |
| CN103149546A (en) * | 2012-11-30 | 2013-06-12 | 河南工业大学 | Portable electric energy measuring terminal comprehensive calibration instrument on site |
| CN205280921U (en) * | 2015-12-25 | 2016-06-01 | 惠州市龙鼎盛电力科技有限公司 | On --spot check gauge of three -phase electric energy meter |
| CN106483489A (en) * | 2016-11-17 | 2017-03-08 | 云南电网有限责任公司电力科学研究院 | The assay device of the mutual-inductor tester based on detection feedback |
| WO2018107623A1 (en) * | 2016-12-14 | 2018-06-21 | 广东百事泰电子商务股份有限公司 | Pfc dual-full-bridge-based smart sine wave voltage conversion circuit |
| CN211148893U (en) * | 2019-07-08 | 2020-07-31 | 珠海普斯雷电子科技有限公司 | Data analysis on-site metering device calibrator |
-
2019
- 2019-07-08 CN CN201910608354.7A patent/CN110456301A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012142736A1 (en) * | 2011-04-22 | 2012-10-26 | 四川电力科学研究院 | Field integral detecting system of three-phase electric energy measuring system of electric distribution network |
| CN103149546A (en) * | 2012-11-30 | 2013-06-12 | 河南工业大学 | Portable electric energy measuring terminal comprehensive calibration instrument on site |
| CN205280921U (en) * | 2015-12-25 | 2016-06-01 | 惠州市龙鼎盛电力科技有限公司 | On --spot check gauge of three -phase electric energy meter |
| CN106483489A (en) * | 2016-11-17 | 2017-03-08 | 云南电网有限责任公司电力科学研究院 | The assay device of the mutual-inductor tester based on detection feedback |
| WO2018107623A1 (en) * | 2016-12-14 | 2018-06-21 | 广东百事泰电子商务股份有限公司 | Pfc dual-full-bridge-based smart sine wave voltage conversion circuit |
| CN211148893U (en) * | 2019-07-08 | 2020-07-31 | 珠海普斯雷电子科技有限公司 | Data analysis on-site metering device calibrator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111721988A (en) * | 2020-06-28 | 2020-09-29 | 珠海普斯雷电子科技有限公司 | Measuring instrument and method for electric quantity compensation of metering device |
| CN111721988B (en) * | 2020-06-28 | 2024-05-14 | 珠海普斯雷电子科技有限公司 | Measuring device electricity quantity compensation measuring and calculating instrument and method |
| CN113884963A (en) * | 2021-09-24 | 2022-01-04 | 广东电网有限责任公司 | High-precision direct-current standard electric energy meter |
| CN115420942A (en) * | 2022-11-04 | 2022-12-02 | 浙江正泰物联技术有限公司 | Electric energy measuring device and power supply system |
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