CN102323565B - Electric energy metering instrument - Google Patents
Electric energy metering instrument Download PDFInfo
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- CN102323565B CN102323565B CN 201110226158 CN201110226158A CN102323565B CN 102323565 B CN102323565 B CN 102323565B CN 201110226158 CN201110226158 CN 201110226158 CN 201110226158 A CN201110226158 A CN 201110226158A CN 102323565 B CN102323565 B CN 102323565B
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Abstract
The invention provides an electric energy metering instrument. The electric energy metering instrument comprises a display unit and a pulse indicator lamp, wherein the display unit is provided with an information display module and also comprises an instrument constant self-test device; the instrument constant self-test device comprises a metering data processing unit, a display drive unit and a constant self-test function operation unit; and the metering data processing unit is respectively connected to the pulse indicator lamp and the self-test function operation unit in a communication wayand is connected to the display unit through the display drive unit in the communication way. The information display module comprises an electric energy value cumulative count module and a pulse cumulative count module. When the constant self-test function operation unit is controlled, the electric energy value cumulative count module and the pulse cumulative count module of the information display module are started by the metering data processing unit and are used for respectively displaying continuous electric energy cumulative count values and the pulse cumulative count values, at the moment, the electric energy metering instrument enters a constant self-test state. The electric energy value cumulative count module is provided with at least one display digit; and the pulse cumulativecount module is provided with at least 3 display digits.
Description
Technical field
The present invention relates to the electric energy metrical field, more particular words it, the present invention relates to a kind of electric energy measurement instrument with meter constant self-checking unit.
Background technology
Meter constant is an important technology index of the accuracy characteristic of various electric energy measurement instruments.For electric energy measurement instrument, meter constant refers to when user power utilization, walks ratio between the number of words according to detecting tested electric flux size to the add up liquid crystal metering device of electricity consumption quantity of the quantity of the light pulse (flicker of LED light) of external world's output or electric pulse (electric signal of the rule that changes between lead-out terminal) and power meter table record during electric energy measurement instrument work.Wherein the light pulse of output or the effect one of electric pulse are the indications that provides observing apparatus whether to work for the technician, the 2nd, the sampled signal of instrument being carried out the electric energy metrical in accuracy when test is provided for the technician.The effect of liquid crystal metering device is the tested power consumption size totally that the record electric energy measurement instrument measures.
At present, electric energy measurement instrument does not have self-checking function and the corresponding self-checking unit of meter constant, the meter constant check needs to rely on the light pulse of external energy recorder output or the counter of electric pulse, under the condition that gives the simulation electricity consumption of electric energy measurement instrument a period of time, the tester is by the variation of having good luck of artificial naked-eye observation electric energy measurement instrument liquid crystal metering device, and the transient starting impulse meter that changes in the first time of having good luck of liquid crystal metering device, read on the impulse meter the once umber of pulse of record in the moment that changes for the second time of having good luck of liquid crystal metering device, this two item number of umber of pulse that then records on the variation number of having good luck by liquid crystal metering device and the impulse meter according to calculate the meter constant of estimating electric energy measurement instrument accurately whether.This method of testing has been used till today since electric energy measurement instrument comes out always.Owing to having got involved the observation of artificial naked eyes, therefore there is larger test error so that tester's working strength is large consuming time many in the method for testing of this meter constant.Yet, often need to increase the amount of having good luck of liquid crystal metering device and reduce to simulate power consumption with the frequency of the output pulse of reduction instrument in order to reduce test error, doing so often needs to consume the more test duration.
Therefore, in the urgent need to a kind of meter constant self-checking unit, avoid remedying the defective of prior art because the manual testing gets involved the accuracy of an instrument error that causes.
Summary of the invention
The present invention is intended to solve technological deficiency mentioned above, a kind of electric energy measurement instrument is proposed, comprise display unit, pulse pilot lamp, described display unit is provided with information display module, it is characterized in that: also comprise the meter constant self-checking unit, described meter constant self-checking unit comprises continuous data processing unit, display driver unit and constant self-checking function actuation unit, described continuous data processing unit respectively communication is connected to the pulse pilot lamp, the self-checking function actuation unit, and be connected to display unit by described display driver unit communications.
As preferably, described information display module comprises electric energy value accumulated counts module and pulse accumulation counting module.
When instrument is in normal operating conditions lower time, described information display module shows electric energy metrical numerical value; When the described constant self-checking function actuation unit of control, described constant self-checking function actuation unit sends control signaling to the continuous data processing unit, described continuous data processing unit sends the control data to described display driver unit, so that electric energy value accumulated counts module and the pulse accumulation counting module of described display driver unit starting information display module, in order to show respectively continuous electric flux accumulated counts value and pulse accumulation count value, this moment, electric energy measurement instrument entered constant self check state.
As preferably, when described electric energy measurement instrument enters constant self check state, within arbitrary default cycle self check working time, the ratio of the numerical value change amount of the numerical value change amount of described pulse accumulation counting module and electric energy value accumulated counts module should satisfy relation: K=Δ i/ Δ k, wherein K represents meter constant, the numerical value change amount of Δ i indicating impulse accumulated counts value, Δ k represents the numerical value change amount of electric flux accumulated counts value.
As preferably, described electric energy value accumulated counts module has at least 1 and shows numeral.
As preferably, described pulse accumulation counting module has at least 3 and shows numeral.
Description of drawings
Come detailed description technical scheme of the present invention hereinafter with reference to accompanying drawing, wherein similar numeral or symbology similar elements or composition, wherein
Fig. 1 is the functional-block diagram of preferred embodiment of the constant self-checking unit of electric energy measurement instrument of the present invention;
Fig. 2 is the self check display of regime schematic diagram as the constant self-checking unit of the three-phase multifunctional electrical energy meter of the first preferred embodiment of the present invention;
Fig. 3 is the self check display of regime schematic diagram as the constant self-checking unit of the single-phase common electric energy meter of the second preferred embodiment of the present invention.
Embodiment
With reference to accompanying drawing, Fig. 1 has schematically shown the principle assumption diagram of preferred embodiment of the constant self-checking unit of electric energy measurement instrument 100 of the present invention.As shown in the figure, electric energy measurement instrument 100 of the present invention comprises for example LCDs of display unit 101(), pulse pilot lamp 102(LED light for example), also comprise the meter constant self-checking unit, described meter constant self-checking unit comprises continuous data processing unit 140, display driver unit 130 and constant self-checking function actuation unit 104.In the present embodiment, constant self-checking function actuation unit 104 can be located on the electric energy measurement instrument 100, also can be located on the programming meter copying device 120, and come start/stop constant self-checking function (for the pre-payment electric energy measuring instrument by control panel 121 remote control infrared receiving circuits 102, realize wireless copy reading ammeter data with handheld device in the prior art, the convenient use and minimizing instrument dismounting cost), two kinds of set-up modes can be chosen one wantonly and realize.Continuous data processing unit 140 respectively communication is connected to pulse pilot lamp 103, self-checking function actuation unit 104 or 121, and be connected to the display unit 101 of instrument by 130 communications of display driver unit.
Fig. 2 utilizes two rows numeral display module on the LCDs of three-phase multifunctional electrical energy meter as the chief component of the display unit of the constant self-checking unit of three-phase multifunctional electrical energy meter, shows the main flow process of constant self check state.As shown in the figure, liquid crystal display 101 includes information display module 211, and as preferably, described information display module 211 comprises electric energy value accumulated counts module and pulse accumulation counting module.
In Fig. 2, the digital display module 212 that upper row is larger is electric energy value accumulated counts module, be used for the variation of the electric flux Value Data of demonstration constant process of self-test power meter table record, for example unit can be set as 0.01 kWh, the less digital display module 213 of lower row is the pulse accumulation counting module, be used for to show light that constant process of self-test electric energy measurement instrument sends or the accumulative total umber of pulse of electric pulse.When electric energy measurement instrument 100 of the present invention was in normal operating conditions 210, information display module 211 showed electric energy metrical numerical value; When control constant self-checking function actuation unit 104, described constant self-checking function actuation unit 104 sends control signaling to continuous data processing unit 140, described continuous data processing unit 140 is 130 transmission control data to described display driver unit, so that electric energy value accumulated counts module 212 and the pulse accumulation counting module 213 of display driver unit 130 log-on message display modules 211, in order to show respectively continuous electric flux accumulated counts value and pulse accumulation count value, this moment, electric energy measurement instrument entered constant self check state.
When constant self check state 220, export LED light 103 every flickers once when the light pulse of electric energy meter, the less digital display module 213 of lower row just increases by 1 counting.
In one first default self check working time cycle T
1Interior (namely when constant self check state 230), the light pulse output LED light 103 of electric energy meter has been glimmered 32 times, numeral display module 213 is that the stored count value is 32, and the second figure place skips to 1 behind the radix point of the larger digital display module 212 of this row of engraving, and expression electric energy value cumulative number is 0.01 kWh.
In one second default self check working time cycle T
2Interior (namely when constant self check state 240), the light pulse output LED light 103 of electric energy meter has been glimmered 320 times, numeral display module 213 is that the accumulated counts value is 320, and the first figure place skips to 1 behind the radix point of the larger digital display module 212 of this row of engraving, and expression electric energy value accumulative total is 0.10 kWh.
In one the 3rd default self check working time cycle T
3Interior (namely when constant self check state 250), the light pulse output LED light 103 of electric energy meter has been glimmered 3200 times, numeral display module 213 is that the accumulated counts value is 3200, the larger digital display module 212 of this row of engraving then skips to 1, expression electric energy value accumulative total is 1.00 kWh, i.e. expression is when the pulse accumulation count value is 3200, and electric energy measurement instrument 100 is the electric weight of metering 1 kWh just.Namely satisfy within arbitrary default cycle self check working time, meter constant satisfies such relation: K=Δ i/ Δ k, wherein K represents meter constant, the numerical value change amount of Δ i indicating impulse accumulated counts value, and Δ k represents the numerical value change amount of electric flux accumulated counts value.With reference to above-described embodiment, during state 230,32/0.01=3200; During state 240,320/0.1=3200; During state 250,3200/1=3200.The meter constant K value that then just meets through this electric energy measurement instrument of self check is 3200.And detect by external device (ED), then can't avoid the randomness in the setting of human error and time.The instrument self check then can be avoided the generation of such problem.
The minimum electric weight of the constant self-checking function inspection of electric energy measurement instrument 100 or minimum umber of pulse can be determined according to the regulation of electric energy measurement instrument Its Relevant Technology Standards.When the moment that a predetermined constant self check work period finishes, i.e. when last pulse of the self check umber of pulse that electric energy measurement instrument is scheduled in the constant self check work period was sent, the constant self-checking function finished; The changing value of the electric flux of the brilliant numeral of discharge opeing and the umber of pulse of lower row record are freezed at the moment on this moment constant self-checking function display interface, and the variation of the electric flux on tester's range estimation and the record constant self-checking function display interface and calculating and the accuracy that two data of umber of pulse are carried out meter constant are differentiated.
Fig. 3 utilizes digital display module single on the LCDs commonly used 101 of single-phase electric energy meter as the constant self-checking unit display unit of single-phase common electric energy meter.When the constant self-checking function actuation unit 104 of controlling electric energy measurement instrument 100 of the present invention or 121, the constant self-checking function starts, LED light 103 every flickers of instrument once then increase by 1 numerical value on the rightmost numerical digit in pulse accumulation counting region on the LCDs.
In Fig. 3, information display module is divided into left and right sides two parts (cutting apart with the dotted line in scheming): the right 2 bit digital display modules 311 show the electric flux accumulated counts Value Data of power meter table record in the constant process of self-test, and unit is 0.1 kWh; The light that electric energy measurement instrument sends in the left side 4 bit digital demonstration constant process of self-test and the pulse accumulation count value data of electric pulse.
When self check state 320, export LED light 103 every flickers once when the light pulse of electric energy measurement instrument, the 4th bit digital just increases by 1 counting from left to right.
In one first default self check working time cycle T
1Interior (namely when constant self check state 330), the light pulse output LED light 103 of electric energy meter has been glimmered 320 times, numeral display module 312 is that the stored count value is 320, and right side numeral display module 311 displayed values are 0.1 this moment, and expression electric energy value cumulative number is 0.1 kWh.
In one second default self check working time cycle T
2Interior (namely when constant self check state 340), the light pulse output LED light 103 of electric energy meter has been glimmered 3200 times, numeral display module 312 is that the stored count value is 3200, and right side numeral display module 311 displayed values are 1.0 this moment, and expression electric energy value cumulative number is 1.0 kWh.
In one the 3rd default self check working time cycle T
3Interior (namely when constant self check state 350), the light pulse output LED light 103 of electric energy meter has been glimmered 6400 times, numeral display module 312 is that the stored count value is 6400, and right side numeral display module 311 displayed values are 2.0 this moment, and expression electric energy value cumulative number is 2.0 kWh.
Identical with the principle of the first preferred embodiment, the meter constant of this kind single-phase electric energy meter 100 is 3200.Meet meter constant.
When last pulse of the self check umber of pulse that electric energy measurement instrument is scheduled in the constant self check work period is sent, the constant self-checking function finishes, for example, this moment, the liquid crystal digital of Fig. 3 constant self-checking function display interface freezed at the moment, and the technician can estimate and record the variation of 2 electric fluxs in the right on the constant self-checking function display interface and calculating and accuracy that 4 digit pulses several two data in the left side are carried out meter constant are differentiated.
As preferably, electric energy value accumulated counts module 311 has at least 1 and shows numeral.
As preferably, pulse accumulation counting module 312 has at least 3 and shows numeral.
For realizing purpose of the present invention, constant self-checking function actuation unit can be installed separately, also can utilize existing meter reading functional unit on the electric energy measurement instrument table cover, and the constant self-checking function is arranged in the existing feature list.Except start the constant self-checking function with functional unit, can also utilize the remote-control programming that uses with the electric energy measurement instrument coupling/mobile phone of checking meter, the constant self-checking function is arranged on the function menu of the mobile phone of programming/check meter.Start the constant self-checking function of electric energy measurement instrument with the mobile phone of programming/check meter, its effect of constant self-checking function that the functional unit of providing for oneself with instrument starts is consistent.
Below only being the preferred implementation of electric energy measurement instrument of the present invention, is not to limit the present invention.For example, be not that meter constant is limited to the numerical value of explaining in the preferred embodiments of the present invention, because different electric energy measurement instruments, according to its technical standard and manufacturing requirement, its meter constant is not identical.The know-why that embodies based on technical scheme of the present invention and claims; can very accurately draw meter constant; and all modifications of having done in the present invention's technical spirit required for protection and principle, variation or substitute all should be covered by in the technical protection category of the present invention.
Claims (4)
1. electric energy measurement instrument, comprise display unit, the pulse pilot lamp, described display unit is provided with information display module, it is characterized in that: also comprise the meter constant self-checking unit, described meter constant self-checking unit comprises the continuous data processing unit, display driver unit and constant self-checking function actuation unit, described continuous data processing unit is connected to respectively the pulse pilot lamp, the self-checking function actuation unit, and be connected to display unit by described display driver unit communications, described information display module comprises electric energy value accumulated counts module and pulse accumulation counting module, when instrument is in normal operating conditions lower time, described information display module shows electric energy metrical numerical value; When the described constant self-checking function actuation unit of control, described constant self-checking function actuation unit sends control signaling to the continuous data processing unit, described continuous data processing unit sends the control data to described display driver unit, so that electric energy value accumulated counts module and the pulse accumulation counting module of described display driver unit starting information display module, in order to show respectively continuous electric flux accumulated counts value and pulse accumulation count value, this moment, electric energy measurement instrument entered constant self check state.
2. electric energy measurement instrument as claimed in claim 1, it is characterized in that: when described electric energy measurement instrument enters constant self check state, in arbitrary preset time period, the ratio of the numerical value change amount of the numerical value change amount of described pulse accumulation counting module and electric energy value accumulated counts module should satisfy relation:
K=Δ i/ Δ k, wherein
K represents meter constant, the numerical value change amount of Δ i indicating impulse accumulated counts value, and Δ k represents the numerical value change amount of electric flux accumulated counts value.
3. electric energy measurement instrument as claimed in claim 1 or 2 is characterized in that: described electric energy value accumulated counts module has at least 1 and shows numeral.
4. electric energy measurement instrument as claimed in claim 1 or 2 is characterized in that: described pulse accumulation counting module has at least 3 and shows numeral.
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| CN 201110226158 CN102323565B (en) | 2011-08-09 | 2011-08-09 | Electric energy metering instrument |
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| CN 201110226158 CN102323565B (en) | 2011-08-09 | 2011-08-09 | Electric energy metering instrument |
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| CN102323565A CN102323565A (en) | 2012-01-18 |
| CN102323565B true CN102323565B (en) | 2013-10-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6373305B2 (en) * | 2016-06-23 | 2018-08-15 | 三菱電機ビルテクノサービス株式会社 | Weighing device |
| CN106325865A (en) * | 2016-08-23 | 2017-01-11 | 深圳市科陆电子科技股份有限公司 | Electric meter software management method and system |
| CN111707983B (en) * | 2020-07-13 | 2024-03-22 | 郑州万特电气股份有限公司 | Electric energy meter constant test method, equipment, system and medium |
| CN114062997B (en) * | 2021-11-05 | 2024-03-19 | 中国南方电网有限责任公司超高压输电公司广州局 | Electric energy meter verification method, system and device |
| CN114200204B (en) * | 2021-11-30 | 2024-03-08 | 科陆国际技术有限公司 | Multiphase electric energy meter, counting method thereof and computer readable storage medium |
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Address after: HOLLEY Technology Park No. 181 310023 Hangzhou city Zhejiang District of Yuhang province Wuchang Avenue Patentee after: HOLLEY METERING LIMITED Address before: HOLLEY Technology Park No. 181 310023 Hangzhou city Zhejiang District of Yuhang province Wuchang Avenue Patentee before: Holley Metering Ltd. |
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Effective date of registration: 20210809 Address after: No.258 longfengqiao, Beibei District, Chongqing 400799 Patentee after: CHONGQING HUAHONG INSTRUMENT Co.,Ltd. Address before: 310023 HOLLEY Science Park, 181 Wuchang Road, Yuhang District, Zhejiang, Hangzhou Patentee before: Holley Technology Co.,Ltd. |
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