CN101644754A - Calibration console for electric energy meter - Google Patents
Calibration console for electric energy meter Download PDFInfo
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- CN101644754A CN101644754A CN200910304098A CN200910304098A CN101644754A CN 101644754 A CN101644754 A CN 101644754A CN 200910304098 A CN200910304098 A CN 200910304098A CN 200910304098 A CN200910304098 A CN 200910304098A CN 101644754 A CN101644754 A CN 101644754A
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Abstract
The invention is suitable for a meter detection device, in particular provides a calibration console for an electric energy meter. The calibration console adopts a man-machine interaction control (MCU) which is provided with a timer, an external interrupt interface and an error calculation unit, wherein the timer is used for collecting standard meter pulses, the external interrupt interface is used for collecting the pulses of a meter to be detected, and the error calculation unit is used for calculating the electric energy error according to the standard meter pulses and the pulses of the meter to be detected; and therefore, the invention not only realizes the error detection of the electric energy meter, but also provides the mode of man-machine interaction, and is convenient to be operated by a user.
Description
Technical field
The invention belongs to the instrument pick-up unit, relate in particular to a kind of calibration console for electric energy meter.
Background technology
In electric system, various electric energy meters need carry out verification to its electric energy metering error before networking, and the electric energy meter that electric energy error is qualified just allows to network and uses.
As shown in Figure 1, be the structure of the calibration console for electric energy meter that provides of prior art, existing calibration console for electric energy meter comprises power source, standard electric energy meter, electric energy epi-position, electric energy error counter.This electric energy error counter comprises counter, timer again.By power source output AC electrical transmission give standard electric energy meter and be inserted in the electric energy epi-position by the school electric energy meter, produce the standard electric energy impulse respectively, by the school electrical energy pulse.By counter collection statistical standard electrical energy pulse number, by school electrical energy pulse number, this timer is gathered the width in each cycle of measurement standard electrical energy pulse, thereby calculate the standard electric energy impulse number in a collection period, thereby calculate by the pulse error amount of school electric energy meter.Because this electric energy error counter adopts special-purpose MCU, therefore, makes the cost of calibration console for electric energy meter higher.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of calibration console for electric energy meter, is intended to solve the cost problem of higher of existing electric energy checking table.
The embodiment of the invention is to realize like this, a kind of calibration console for electric energy meter, described calibration console for electric energy meter comprises power source, standard electric energy meter and electric energy epi-position, described power source links to each other with standard electric energy meter, electric energy epi-position respectively, described checking table also comprises: the human-computer interactive control MCU with timer, external interrupt interface, error calculation unit
Described timer links to each other with standard electric energy meter, is used to gather the standard scale pulse;
Described external interrupt interface is linked to each other by the school electric energy meter with described electric energy epi-position, is used to gather tested table pulse;
Described error calculation unit links to each other with timer and external interrupt interface, is used for calculating electric energy error according to described standard scale pulse and described tested table pulse.
In an embodiment of the present invention, employing has the human-computer interactive control MCU of timer, external interrupt interface, error calculation unit, gather the standard scale pulse by timer, gather tested table pulse by the external interrupt interface, and calculate electric energy error according to described standard scale pulse and described tested table pulse by error calculation unit, thereby not only realized the error-detecting of electric energy meter, and interactive mode is provided, be convenient to user's operation.
Description of drawings
Fig. 1 is the structural representation of the calibration console for electric energy meter that provides of prior art;
Fig. 2 is the structural representation of the calibration console for electric energy meter that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In an embodiment of the present invention, employing has the human-computer interactive control MCU of timer, external interrupt interface, error calculation unit, gather the standard scale pulse by timer, gather tested table pulse by the external interrupt interface, and calculate electric energy error according to described standard scale pulse and described tested table pulse by error calculation unit, thereby not only realized the error-detecting of electric energy meter, and interactive mode is provided, be convenient to user's operation.
Fig. 2 shows the structure of the calibration console for electric energy meter that the embodiment of the invention provides, and this calibration console for electric energy meter comprises power source 23, standard electric energy meter 21 and electric energy epi-position 22.This power source 23 links to each other with standard electric energy meter 21, electric energy epi-position 22 respectively.This calibration console for electric energy meter also comprises: the human-computer interactive control MCU24 with timer 2 41, external interrupt interface 242, error calculation unit 243.This timer 2 41 links to each other with standard electric energy meter 21, and this external interrupt interface 242 is linked to each other by the school electric energy meter with this electric energy epi-position 22.This error calculation unit 243 links to each other with timer and external interrupt interface.
As embodiments of the invention, human-computer interactive control MCU can adopt ARM9 or ARM11 chip.Be example to adopt the S3C2410 among the ARM9 below, describe its process.
S3C2410 provide 5 16 Timer (timer) (Timer0 ~ Timer4), wherein Timer0 ~ Timer3 support width modulation (Pulse Width Modulation, PWM).Timer4 is a timer internal (internal timer), and it does not have output pin (output pins).
PCLK is the signal source of Timer, and we convert PCLK to logic control element (ControlLogic) that input clock signal sends each Timer to by corresponding and pre-divider Prescaler of each Timer and frequency divider Clock Divider are set.In fact each Timer has a parameter that is called input clock frequency (Timer input clock Frequency), this frequency is passed through PCLK exactly, Prescaler and Clock Divider decide, and the logic control element of each Timer is exactly in work with this frequency.
Yet be not that each Timer has corresponding Prescaler and Clock Divider, in S3C2410, Timer0, shared a pair of Prescaler of Timer1 and Clock Divider, Timer2, Timer3, Timer4 shared another to Prescaler and Clock Divider, the whole clock system module of S3C2410 only exists two couples of Prescaler and ClockDivider.Certainly here, need not to carry out frequency division, directly the standard scale pulse is introduced as PCLK.
A timer (except the timer 4) all comprises the several registers of TCNTBn, TCNTn, TCMPBn and TCMPn (TCNTn and TCMPn are the titles of internal register, and the value of TCNTn can obtain by reading TCNTOn).When timer reaches 0, the value of TCNTBn and TCMPBn will be loaded among TCNTn and the TCMPn automatically.As TCNTn to 0 and when interrupting enabling, timer will produce an interrupt request.Automatically load operation is duplicated the value of TCNTBn in TCNTn simultaneously.If but loading mode does not enable automatically, TCNT0 will not carry out any operation.The standard scale pulse number that can obtain receiving by interruption times and TCNTOn.
Tested table pulse is gathered by external interrupt.EINT0～EINT3 is arranged in S3C2410, EINT4to7, EINT8to23 is 24 exterior interrupt altogether.These all with the multiplexing formation of GPIO.EXTINT0～EXTINT2 has been divided into 3 groups with these 24 external interrupt, per 8 external interrupt have common attribute to assign in one group, the triggering mode of external interrupt can be set: level, rising edge, negative edge or bilateral along triggering mode by these registers.EINTMASK (ExternalInterrupt Mask Register) external interrupt mask register, reset value is that the initial value identical with INTMSK all is 0x000fffff here, all shields under initial situation.In this register, just be provided with EINT4～EINT23.Which external interrupt EINTPEND (External Interrupt Pending Register) external interrupt judgement register can be judged by this register and be responded.
As embodiments of the invention, can adopt the mode of level triggers to gather the pulse of tested table (in test, external interrupt can collect the pulse of 50K, examines and determine electric energy meter like this and most of standard scale is set all can examines and determine).At last, pass through formula: electric energy meter error=((tested table pulse/tested table constant)/(standard scale pulse/standard scale constant) 1) * 100% can calculate electric energy meter error.
In an embodiment of the present invention, employing has the human-computer interactive control MCU of timer, external interrupt interface, error calculation unit, gather the standard scale pulse by timer, gather tested table pulse by the external interrupt interface, and calculate electric energy error according to described standard scale pulse and described tested table pulse by error calculation unit, thereby not only realized the error-detecting of electric energy meter, and interactive mode is provided, be convenient to user's operation.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. calibration console for electric energy meter, described calibration console for electric energy meter comprises power source, standard electric energy meter and electric energy epi-position, described power source links to each other with standard electric energy meter, electric energy epi-position respectively, it is characterized in that, described checking table also comprises: the human-computer interactive control MCU with timer, external interrupt interface, error calculation unit
Described timer links to each other with standard electric energy meter, is used to gather the standard scale pulse;
Described external interrupt interface is linked to each other by the school electric energy meter with described electric energy epi-position, is used to gather tested table pulse;
Described error calculation unit links to each other with timer and external interrupt interface, is used for calculating electric energy error according to described standard scale pulse and described tested table pulse.
2. checking table as claimed in claim 1 is characterized in that, described human-computer interactive control MCU is ARM9 or ARM11 chip.
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| CN200910304098A CN101644754A (en) | 2009-07-07 | 2009-07-07 | Calibration console for electric energy meter |
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| CN200910304098A CN101644754A (en) | 2009-07-07 | 2009-07-07 | Calibration console for electric energy meter |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065132A (en) * | 2010-12-03 | 2011-05-18 | 深圳市科陆电子科技股份有限公司 | Method for maintaining check table of electric energy meter by using embedded WEB server |
| CN102081152A (en) * | 2010-11-25 | 2011-06-01 | 深圳市科陆电子科技股份有限公司 | Calibration device and method for out-of-band accessory direct-current electric energy meter |
| CN102087351A (en) * | 2011-01-31 | 2011-06-08 | 浙江省电力公司 | Watt-hour meter inspection quality real-time monitoring device and method |
| CN102129058A (en) * | 2010-12-15 | 2011-07-20 | 中国西电电气股份有限公司 | Direct-current voltage divider calibration device for direct-current power transmission system |
| CN102654570A (en) * | 2011-03-04 | 2012-09-05 | 河北省电力研究院 | Method for semi-automatically testing/calibrating instrument without programmable interface |
| CN103698735A (en) * | 2013-10-30 | 2014-04-02 | 国家电网公司 | Electric energy meter harmonic test device and method thereof |
| CN103913718A (en) * | 2014-04-03 | 2014-07-09 | 云南电力试验研究院（集团）有限公司电力研究院 | Device for testing power consumption of voltage circuit of electric energy meter |
| CN104237839A (en) * | 2014-09-12 | 2014-12-24 | 国家电网公司 | Standard electric energy high-frequency impulse high-fidelity transmission system |
| CN104569579A (en) * | 2014-12-30 | 2015-04-29 | 深圳市科陆电子科技股份有限公司 | Electric energy error detection method based on wireless network and error detection systems |
| CN104914399A (en) * | 2015-06-19 | 2015-09-16 | 国网天津市电力公司 | Electric energy metering device verification method for single-phase intelligent electric energy meter automatic verification system |
| CN105425184A (en) * | 2015-11-23 | 2016-03-23 | 苏州华电电气股份有限公司 | Automatic calibration system for high-voltage divider |
| CN105738853A (en) * | 2016-05-12 | 2016-07-06 | 苏州华电电气股份有限公司 | Automatic checking platform of high-voltage alternating-current voltage divider |
| CN105842653A (en) * | 2016-06-13 | 2016-08-10 | 国网江苏省电力公司电力科学研究院 | Simultaneous acquisition test circuit used for electric energy and clock pulses of electric energy meter |
| CN106597351A (en) * | 2016-11-18 | 2017-04-26 | 云南电网有限责任公司电力科学研究院 | Electric energy meter verification device online real-time monitoring realization method |
| CN106908750A (en) * | 2017-01-10 | 2017-06-30 | 河南许继仪表有限公司 | A kind of electric energy meter pulse error detection method and device |
| CN107907850A (en) * | 2017-11-02 | 2018-04-13 | 华立科技股份有限公司 | Three-phase electric energy meter clock alignment and error calibrating method |
| CN109581272A (en) * | 2018-12-14 | 2019-04-05 | 国网河北省电力有限公司电力科学研究院 | A kind of direct current energy meter detection system |
| CN111273213A (en) * | 2020-03-23 | 2020-06-12 | 华立科技股份有限公司 | Ammeter calibration method and device |
| CN112034412A (en) * | 2020-07-20 | 2020-12-04 | 中国电力科学研究院有限公司 | Intelligent electric energy meter misalignment analysis method and system based on intelligent isolating switch |
| CN112782640A (en) * | 2020-12-30 | 2021-05-11 | 深圳市科陆精密仪器有限公司 | Method and device for calibrating intelligent electric energy meter |
-
2009
- 2009-07-07 CN CN200910304098A patent/CN101644754A/en active Pending
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081152A (en) * | 2010-11-25 | 2011-06-01 | 深圳市科陆电子科技股份有限公司 | Calibration device and method for out-of-band accessory direct-current electric energy meter |
| CN102065132A (en) * | 2010-12-03 | 2011-05-18 | 深圳市科陆电子科技股份有限公司 | Method for maintaining check table of electric energy meter by using embedded WEB server |
| CN102065132B (en) * | 2010-12-03 | 2014-01-15 | 深圳市科陆电子科技股份有限公司 | Method for maintaining check table of electric energy meter by using embedded WEB server |
| CN102129058A (en) * | 2010-12-15 | 2011-07-20 | 中国西电电气股份有限公司 | Direct-current voltage divider calibration device for direct-current power transmission system |
| CN102087351A (en) * | 2011-01-31 | 2011-06-08 | 浙江省电力公司 | Watt-hour meter inspection quality real-time monitoring device and method |
| CN102087351B (en) * | 2011-01-31 | 2014-03-26 | 浙江省电力公司 | Watt-hour meter inspection quality real-time monitoring device and method |
| CN102654570A (en) * | 2011-03-04 | 2012-09-05 | 河北省电力研究院 | Method for semi-automatically testing/calibrating instrument without programmable interface |
| CN103698735A (en) * | 2013-10-30 | 2014-04-02 | 国家电网公司 | Electric energy meter harmonic test device and method thereof |
| CN103913718A (en) * | 2014-04-03 | 2014-07-09 | 云南电力试验研究院（集团）有限公司电力研究院 | Device for testing power consumption of voltage circuit of electric energy meter |
| CN104237839A (en) * | 2014-09-12 | 2014-12-24 | 国家电网公司 | Standard electric energy high-frequency impulse high-fidelity transmission system |
| CN104569579B (en) * | 2014-12-30 | 2017-11-28 | 深圳市科陆电子科技股份有限公司 | Electric energy error detection method and error detecting system based on wireless network |
| CN104569579A (en) * | 2014-12-30 | 2015-04-29 | 深圳市科陆电子科技股份有限公司 | Electric energy error detection method based on wireless network and error detection systems |
| CN104914399B (en) * | 2015-06-19 | 2017-08-25 | 国网天津市电力公司 | A kind of electric power meter calibration method for single-phase intelligent electric energy meter automatic calibration system |
| CN104914399A (en) * | 2015-06-19 | 2015-09-16 | 国网天津市电力公司 | Electric energy metering device verification method for single-phase intelligent electric energy meter automatic verification system |
| CN105425184A (en) * | 2015-11-23 | 2016-03-23 | 苏州华电电气股份有限公司 | Automatic calibration system for high-voltage divider |
| CN105738853A (en) * | 2016-05-12 | 2016-07-06 | 苏州华电电气股份有限公司 | Automatic checking platform of high-voltage alternating-current voltage divider |
| CN105842653A (en) * | 2016-06-13 | 2016-08-10 | 国网江苏省电力公司电力科学研究院 | Simultaneous acquisition test circuit used for electric energy and clock pulses of electric energy meter |
| CN106597351A (en) * | 2016-11-18 | 2017-04-26 | 云南电网有限责任公司电力科学研究院 | Electric energy meter verification device online real-time monitoring realization method |
| CN106597351B (en) * | 2016-11-18 | 2019-04-05 | 云南电网有限责任公司电力科学研究院 | A kind of implementation method of pair of electric energy meter checking device on-line real time monitoring |
| CN106908750A (en) * | 2017-01-10 | 2017-06-30 | 河南许继仪表有限公司 | A kind of electric energy meter pulse error detection method and device |
| CN107907850A (en) * | 2017-11-02 | 2018-04-13 | 华立科技股份有限公司 | Three-phase electric energy meter clock alignment and error calibrating method |
| CN109581272A (en) * | 2018-12-14 | 2019-04-05 | 国网河北省电力有限公司电力科学研究院 | A kind of direct current energy meter detection system |
| CN111273213A (en) * | 2020-03-23 | 2020-06-12 | 华立科技股份有限公司 | Ammeter calibration method and device |
| CN112034412A (en) * | 2020-07-20 | 2020-12-04 | 中国电力科学研究院有限公司 | Intelligent electric energy meter misalignment analysis method and system based on intelligent isolating switch |
| CN112782640A (en) * | 2020-12-30 | 2021-05-11 | 深圳市科陆精密仪器有限公司 | Method and device for calibrating intelligent electric energy meter |
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Application publication date: 20100210 |