CN203745639U - Detection device for accumulative errors of electric energy pulses of electric energy meter - Google Patents
Detection device for accumulative errors of electric energy pulses of electric energy meter Download PDFInfo
- Publication number
- CN203745639U CN203745639U CN201320745910.3U CN201320745910U CN203745639U CN 203745639 U CN203745639 U CN 203745639U CN 201320745910 U CN201320745910 U CN 201320745910U CN 203745639 U CN203745639 U CN 203745639U
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- CN
- China
- Prior art keywords
- energy meter
- electric energy
- microprocessing unit
- pulse
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 title abstract description 4
- 230000005611 electricity Effects 0.000 claims description 17
- 230000004907 flux Effects 0.000 claims description 17
- 230000001186 cumulative effect Effects 0.000 claims description 11
- 238000002955 isolation Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000011990 functional testing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Abstract
The utility model relates to a detection device for accumulative errors of electric energy pulses of an electric energy meter. The device includes a microprocessing unit. The pulses of the to-be-detected electric energy meter are connected to a pulse isolating circuit and are then output to a signal collecting terminal of the microprocessing unit. A counter in the microprocessing unit receives the number of the pulses output by the to-be-detected electric energy mter and counts. A UART communication port of the microprocessing unit is connected with a 485 communication interface of the to-be-detected electric energy meter through a 485 driving circuit, so that communication is realized. An I/O port of the microprocessing unit is connected with the display circuit while another I/O port of the microprocessing unit is connected with a press key circuit. A power circuit supplies power for the microprocessing unit. By adopting the detection device provided by the utility model, electric energy pulse output of the electric energy meter is accumulated and the accumulative value is compared with a display value of the electric energy of the electric energy meter. The error between the accumulative value and the display value is calculated. Manual operation is simplified.
Description
Technical field
The utility model belongs to electric energy meter functional test technical field, especially a kind of electrical energy meter electricity energy pulse cumulative errors pick-up unit.
Background technology
Electric flux pulse refers to the electric pulse that electric energy meter is externally exported in electric weight counting, for external device (ED) metering electric flux.Meter constant refers to that electric energy meter counts the externally electric energy meter umber of pulse of output of 1 kilowatt hour at electric weight, and this constant identifies conventionally in electric energy meter nameplate.
According to the power industry standard < < of People's Republic of China (PRC) single-phase intelligent electric energy meter technical manual > > and < < three-phase intelligent electric-energy meter technical manual > > requirement, electric energy meter is exported electric energy meter pulse according to meter constant in accumulative total electric flux, and relation between electric flux pulse output and display indicating value, should be consistent with famous brand.Meanwhile, relevant testing standard is no more than the electric flux unit of display of an electric energy meter to the error requirements between electric energy meter pulse output and electric flux indicating value.
The at present domestic test stage body detecting for electric energy meter, be to carry out accuracy detection by the electric flux pulse output between built-in standard scale and tested electric energy meter mostly, for the consistance between electric flux indicating value in the output of electrical energy meter electricity energy pulse and table, lack effective means of testing.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and proposes a kind of electrical energy meter electricity energy pulse cumulative errors pick-up unit.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of electrical energy meter electricity energy pulse cumulative errors pick-up unit, this device comprises microprocessing unit, power circuit, impulsive quarantine circuit, 485 driving circuits, display circuit and key circuit, after tested electric energy meter pulse access impulsive quarantine circuit, output to again the signals collecting end of microprocessing unit, the counter of microprocessing unit inside receives tested electric energy meter pulse output number counting, the UART communication port of microprocessing unit is connected with tested electric energy meter 485 communication interfaces and is realized communication by 485 driving circuits, an I/O port of microprocessing unit is connected with display circuit, another I/O port of microprocessing unit is connected with key circuit, power circuit is microprocessing unit power supply.
And described microprocessing unit adopts RENESAS M16C/64A chip.
And described impulsive quarantine circuit adopts isolation optocoupler TLP781, impulsive quarantine circuit adopts optocoupler mode that the electric flux pulse of tested electric energy meter is entered to isolation, and converts tested electric energy meter electric weight pulse signal to single-chip microcomputer receptible pulse signal.
And described 485 driving circuits adopt MAX13085 chip, 485 driving circuits are converted to 485 signals of communication by the UART signal of communication of single-chip microcomputer, realize single-chip microcomputer and communicate by letter with 485 of tested electric energy meter.
And described display circuit adopts 6 eight sections of LED charactrons, for showing single-chip microcomputer output valve.
Advantage of the present utility model and good effect are
The utility model has designed a kind of electrical energy meter electricity energy pulse cumulative errors proving installation, by output adds up and compares with electrical energy meter electricity energy indicating value to electrical energy meter electricity energy pulse, calculates error between the two, simplifies manual operation.
Accompanying drawing explanation
Fig. 1 is the utility model pick-up unit hardware structure diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is implemented to be further described, following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of electrical energy meter electricity energy pulse cumulative errors pick-up unit, as shown in Figure 1, this device comprises microprocessing unit (MCU), power circuit, impulsive quarantine circuit, 485 driving circuits, display circuit and key circuit, after tested electric energy meter pulse access impulsive quarantine circuit, output to again the signals collecting end of microprocessing unit, the counter of microprocessing unit inside receives tested electric energy meter pulse output number counting, the UART communication port of microprocessing unit is connected with tested electric energy meter 485 communication interfaces and is realized communication by 485 driving circuits, an I/O port of microprocessing unit is connected with display circuit, another I/O port of microprocessing unit is connected with key circuit, power circuit is microprocessing unit power supply.
Wherein, described microprocessing unit adopts RENESAS M16C/64A chip.
Wherein, described impulsive quarantine circuit adopts isolation optocoupler TLP781, and impulsive quarantine circuit adopts optocoupler mode that the electric flux pulse of tested electric energy meter is entered to isolation, and converts tested electric energy meter electric weight pulse signal to single-chip microcomputer receptible pulse signal.
Wherein, 485 driving circuits adopt MAX13085 chip, and 485 driving circuits are converted to 485 signals of communication by the UART signal of communication of single-chip microcomputer, realize single-chip microcomputer and communicate by letter with 485 of tested electric energy meter.
Wherein, described display circuit adopts 6 eight sections of LED charactrons, for showing single-chip microcomputer output valve.
Wherein, two key circuits of key circuit for starting and finishing.
Principle of work
The utility model pick-up unit passes through the tested electrical energy meter electricity energy of RS485 communication interface copy reading indicating value before tested electric energy meter starts to have good luck; During having good luck at tested electric energy meter, its electric flux pulse output is counted; At tested electric energy meter, have good luck after end, according to tested electrical energy meter electricity energy pulse constant and count pulse number calculate have good luck during the electric flux numerical value of pulse output representative, again by the tested electrical energy meter electricity energy of RS485 communication interface copy reading indicating value, subtract each other with the copy reading electric flux indicating value of having good luck before starting the electric flux numerical value of having good luck that obtains tested electric energy meter reality, finally calculate the electric flux of electric flux and pulse output representative of having good luck, and show.
Claims (5)
1. an electrical energy meter electricity energy pulse cumulative errors pick-up unit, it is characterized in that: this device comprises microprocessing unit, power circuit, impulsive quarantine circuit, 485 driving circuits, display circuit and key circuit, after tested electric energy meter pulse access impulsive quarantine circuit, output to again the signals collecting end of microprocessing unit, the counter of microprocessing unit inside receives tested electric energy meter pulse output number counting, the UART communication port of microprocessing unit is connected with tested electric energy meter 485 communication interfaces and is realized communication by 485 driving circuits, an I/O port of microprocessing unit is connected with display circuit, another I/O port of microprocessing unit is connected with key circuit, power circuit is microprocessing unit power supply.
2. electrical energy meter electricity energy pulse cumulative errors pick-up unit according to claim 1, is characterized in that: described microprocessing unit adopts RENESAS M16C/64A chip.
3. electrical energy meter electricity energy pulse cumulative errors pick-up unit according to claim 1, it is characterized in that: described impulsive quarantine circuit adopts isolation optocoupler TLP781, impulsive quarantine circuit adopts optocoupler mode that the electric flux pulse of tested electric energy meter is entered to isolation, and converts tested electric energy meter electric weight pulse signal to single-chip microcomputer receptible pulse signal.
4. electrical energy meter electricity energy pulse cumulative errors pick-up unit according to claim 1, it is characterized in that: described 485 driving circuits adopt MAX13085 chip, 485 driving circuits are converted to 485 signals of communication by the UART signal of communication of single-chip microcomputer, realize single-chip microcomputer and communicate by letter with 485 of tested electric energy meter.
5. electrical energy meter electricity energy pulse cumulative errors pick-up unit according to claim 1, is characterized in that: described display circuit adopts 6 eight sections of LED charactrons, for showing single-chip microcomputer output valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745910.3U CN203745639U (en) | 2013-11-21 | 2013-11-21 | Detection device for accumulative errors of electric energy pulses of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745910.3U CN203745639U (en) | 2013-11-21 | 2013-11-21 | Detection device for accumulative errors of electric energy pulses of electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203745639U true CN203745639U (en) | 2014-07-30 |
Family
ID=51345423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320745910.3U Expired - Lifetime CN203745639U (en) | 2013-11-21 | 2013-11-21 | Detection device for accumulative errors of electric energy pulses of electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203745639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112710981A (en) * | 2020-12-31 | 2021-04-27 | 华立科技股份有限公司 | Pulse test and ammeter power-on and power-off reliability test system and method |
-
2013
- 2013-11-21 CN CN201320745910.3U patent/CN203745639U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112710981A (en) * | 2020-12-31 | 2021-04-27 | 华立科技股份有限公司 | Pulse test and ammeter power-on and power-off reliability test system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |