CN203630220U - Electronic watt-hour meter with zero line falling detection function - Google Patents
Electronic watt-hour meter with zero line falling detection function Download PDFInfo
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- CN203630220U CN203630220U CN201320871342.1U CN201320871342U CN203630220U CN 203630220 U CN203630220 U CN 203630220U CN 201320871342 U CN201320871342 U CN 201320871342U CN 203630220 U CN203630220 U CN 203630220U
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- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 238000005070 sampling Methods 0.000 claims abstract description 12
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 3
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 19
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 238000013461 design 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
- 230000002265 prevention Effects 0.000 description 1
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Abstract
The utility model discloses an electronic watt-hour meter with a zero line falling detection function. The electronic watt-hour meter comprises a display circuit, a CPU circuit, a function circuit, a metering function circuit, a metering sampling circuit, a power supply circuit, a zero line falling detection sampling circuit, a zero line falling detection sampling signal amplification circuit, a zero line falling detection battery circuit, and a zero line falling detection switching-out circuit, and other functional circuits. The electronic watt-hour meter with the zero line falling detection function is added with the zero line falling detection circuit, solves a problem of zero line falling electricity stealing, maintains a normal electricity market electricity usage environment, and ensures economic benefits of power enterprises.
Description
Technical field
The utility model relate to a kind of fall the electronic electric energy meter of zero line detection function.
Background technology
For a long time, no matter be domestic or external (such as India, Indonesia etc.), stealing problem is to perplex power supply department always, and affects completing of every performance assessment criteria, because Prevention Stealing Electricity Technology level is low, it is the difficult point of opposing electricity-stealing that the variation of stealing mode waits.Electricity filching behavior has seriously damaged the interests of electric power enterprise, has upset for electricity consumption order.
According to statistics, only Tianjin whole year in 2012, investigate and prosecute 2256 of stealings, retrieve economic losses more than 7,000 ten thousand yuan, not have the stealing situation found still very serious, cause damage seriously, the indirect economic loss that stealing causes, cannot estimate especially.According to power department feedback, user's electricity filching behavior and means are all very hidden, are generally difficult to find.
Foreign market, Pakistani stealing in 2012 is serious, and indivedual local power losss, up to 35%, are the one of the main reasons of their electricity shortage, and for effectively containing stealing electricity phenomenon, Pakistani cabinet has passed through " (correction) scheme of opposing electricity-stealing for 2012 ".
The stealing mode of analytic routines, stealing personnel generally can carry out around metering ammeter, and metering ammeter is measured less, and even metering, does not reach the object that stealing is paid tariff less; Traditional mechanical power energy meter, due to the restriction of structure, cannot carry out the expansion of electric function, also has the shortcoming that accuracy is low, power consumption is large simultaneously, is eliminated gradually by market, and therefore the utility model is to launch to discuss around electronic electric energy meter.
Stealing electricity method is a lot, the most common Ye Shi management of power use department finds that maximum stealing modes falls zero line mode exactly, zero line is departed from and come from the connection terminal of metering ammeter, the power supply of the whole function of measuring circuit of electronic electric energy meter is broken, all functions circuit can not be worked, cannot normally measure, reach the object of stealing.
As figure mono-, traditional electronic electric energy meter functional block Figure 11, is made up of display circuit 12, cpu circuit 13, functional circuit 14, function of measuring circuit 15, metering sampling circuit 16 and power circuit 17; In the time of load electricity consumption, metering sampling circuit 16 samples while using electric signal, is transported to function of measuring circuit 15, function of measuring carries out metering signal processing, then electric energy measurement data information conveyance after treatment is arrived to cpu circuit 12, show by display circuit 12, realize the function of metering load electricity consumption; Functional circuit 14 is interlock circuits of realizing the function that meets electrical management requirement; Power circuit 17 is in normal electricity consumption situation, and the power supply of all ammeter functional circuits is provided.
Falling under zero line stealing mode, zero line is not linked in ammeter, makes power circuit 17 that the power supply of ammeter work cannot be provided, and all meter circuits quit work.
In sum, traditional electrical minor electric energy meter is improved, increase and fall zero line testing circuit, solve zero line stealing problem, safeguard normal electricity market power utilization environment, guarantee electric power enterprise economic interests, be necessary to carry out.
Utility model content
The utility model falls zero line stealing problem for solving electricity market, on the basis of traditional electrical minor electric energy meter, increases and falls zero line detection interlock circuit, realizes protection and falls the function that zero line detects.
Technical solution adopted in the utility model is to provide
A kind of fall the electronic electric energy meter of zero line detection function, comprise cpu circuit, the display circuit being connected with described cpu circuit, the functional circuit being connected with described cpu circuit, described functional circuit is for realizing the voltage of electric energy meter, the measurement of electric current and power, the function of measuring circuit being communicated with described cpu circuit, the metering sampling circuit being connected with described function of measuring circuit, the power circuit being connected with described function of measuring circuit, also comprise that the zero line being connected with cpu circuit detects sample circuit, with described fall zero line detect that sample circuit is connected fall zero line detection sampled signal amplifying circuit, respectively with described fall zero line detect that sampled signal amplifying circuit and described cpu circuit be connected fall zero line detection battery circuit, the zero line being connected with described cpu circuit detects the functional circuits such as power-off of operating a switch.
Described fall zero line detect sample circuit comprise copper-manganese sampling resistor or electric power mutual-inductor.
Described fall zero line detect battery circuit and adopt lithium battery or super capacitor.
Described fall zero line detect the functional circuit such as power-off of operating a switch and adopt hummer or warning lamp.
Described fall zero line detect sampled signal amplifying circuit and comprise low consumed power operational amplifier or discrete two, triode combination composition amplifying circuit.
Beneficial effect: the utility model a kind of fall the electronic electric energy meter of zero line detection function, increase and fall zero line testing circuit, solve zero line stealing problem, safeguard normal electricity market power utilization environment, guarantee electric power enterprise economic interests.
Accompanying drawing explanation
Fig. 1 is traditional electrical minor electric energy meter functional block diagram.
Fig. 2 be of the present utility model a kind of fall the electronic electric energy meter functional block diagram of zero line detection function.
Embodiment
As shown in Figure 2, wherein shown according to of the present utility model a kind of fall the electronic electric energy meter functional block diagram of zero line detection function.
Of the present utility model a kind of fall the electronic electric energy meter 21 of zero line detection function comprise display circuit 22, cpu circuit 23, functional circuit 24, function of measuring circuit 25, metering sampling circuit 26, power circuit 27, fall zero line and detect sample circuit 28, fall zero line and detect sampled signal amplifying circuit 29, fall zero line and detect battery circuit 2A and fall zero line and detect the functional circuit 2B such as power-off that operate a switch.
When the normal electricity consumption of user load, identical with traditional electronic electric energy meter, detection of power loss correlation function circuit does not affect normal metering, realizes normal users load Electro-metering function.
In the time falling the stealing of zero line mode, zero line is not linked into ammeter, power circuit 27 lost efficacy, can not provide ammeter each functional circuit normal power source, now fall zero line detect battery circuit 2A to cpu circuit 23, fall zero line and detect sample circuit 28 and fall zero line and detect sampled signal amplifying circuit 29 power supply is provided, the circuit of these 3 modules is normally worked under low-power consumption, and for guaranteeing battery, requiring these 3 modular circuits must be low power operation circuit.
If in the situation that falling the stealing of zero line mode, user load does not consume electric energy, also can not cause the electric energy loss of electric power enterprise, can not cause the loss of economic interests, the starting point of therefore falling zero line detection function design is to solve the stealing in the situation that consuming electric energy again of load simultaneously in zero line situation; Fall zero line detection sample circuit 28 and connect with metering sampling circuit 26, detect user load in zero line situation and whether consume electric energy; At power down mode when cpu circuit 23 detects, user load electricity consumption can be detected and fall zero line detection sample circuit 28 simultaneously, now just think that ammeter is in falling the state of zero line mode stealing, cpu circuit 23 starts and falls zero line detection function, carries out logout, the relevant feature operations such as power-off of operating a switch.
Fall under zero line mode stealing state, fall zero line detection sample circuit 28 the zero line stealing signal detecting is sent to zero line detection sampled signal amplifying circuit 29, fall zero line and detect sampled signal amplifying circuit 29 through amplifying after processing, be converted to the digital signal that cpu circuit 23 can be identified, cpu circuit 23 scans zero line and detects falling after zero line stealing signal of sampled signal amplifying circuit 29, record the stealing of zero line mode the moment occurs, there is the logouts such as duration, and send the function commands such as power-off of operating a switch and detect to falling zero line the functional circuit 2B such as power-off that operate a switch, make the processing actions such as the corresponding power-off of operating a switch, report to the police, prompting ammeter is in falling zero line stealing state, allow power department investigate and prosecute as early as possible, guarantee that power department electric energy do not suffer a loss.
In the present embodiment, fall zero line and detect the mode that sample circuit 28 can adopt copper-manganese sampling or electric power mutual-inductor to sample; Falling zero line detects sampled signal amplifying circuit 29 and can adopt low consumed power operational amplifier or mode discrete two, triode combination composition amplifying circuit; Fall the mode that zero line detection battery circuit 2A can adopt jumbo lithium battery or super capacitor; Falling zero line detects the functional circuit 2B such as power-off that operate a switch and can adopt the mode of the devices such as magnetic latching relay; It is well-known to those skilled in the art falling that zero line detects sample circuit 28, falls that zero line detects sampled signal amplifying circuit 29, falls that zero line detects battery circuit 2A and fall the principle that zero line detects the functional circuit 2B such as power-off that operate a switch, and therefore no longer describes in detail here.Certainly, the utility model also can adopt other modes to realize zero line detection function, and embodiment described here is not only construed as limiting the utility model for explanation.
The utility model has solved zero line stealing problem, safeguards normal electricity market power utilization environment, guarantees electric power enterprise economic interests.
Those skilled in the art will appreciate that in the situation that not deviating from essence of the present utility model and scope, also exist and permitted various deformation and modification.Therefore, scope of the present utility model is limited by claims.
Claims (5)
1. one kind is fallen the electronic electric energy meter (21) of zero line detection function, comprise cpu circuit (23), the display circuit (22) being connected with described cpu circuit, the functional circuit (24) being connected with described cpu circuit, described functional circuit is for realizing the voltage of electric energy meter, the measurement of electric current and power, the function of measuring circuit (25) being communicated with described cpu circuit, the metering sampling circuit (26) being connected with described function of measuring circuit, the power circuit (27) being connected with described function of measuring circuit, it is characterized in that: also comprise that the zero line being connected with cpu circuit detects sample circuit (28), with described fall zero line detect that sample circuit is connected fall zero line detection sampled signal amplifying circuit (29), respectively with described fall zero line detect that sampled signal amplifying circuit and described cpu circuit be connected fall zero line detection battery circuit (2A), the zero line being connected with described cpu circuit detects the functional circuits such as power-off (2B) of operating a switch.
According to claim 1 fall the electronic electric energy meter of zero line detection function, it is characterized in that: described in fall zero line and detect sample circuit and adopt copper-manganese sampling resistor or electric power mutual-inductor.
According to claim 2 fall the electronic electric energy meter of zero line detection function, it is characterized in that: described in fall zero line and detect battery circuit and adopt lithium battery or super capacitor.
According to claim 3 fall the electronic electric energy meter of zero line detection function, it is characterized in that: described in fall zero line and detect the functional circuits such as the power-off of operating a switch and adopt hummer or warning lamp.
According to claim 4 fall the electronic electric energy meter of zero line detection function, it is characterized in that: described in fall zero line and detect sampled signal amplifying circuit and comprise low consumed power operational amplifier or discrete diode, triode combination composition amplifying circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871342.1U CN203630220U (en) | 2013-12-27 | 2013-12-27 | Electronic watt-hour meter with zero line falling detection function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871342.1U CN203630220U (en) | 2013-12-27 | 2013-12-27 | Electronic watt-hour meter with zero line falling detection function |
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| CN203630220U true CN203630220U (en) | 2014-06-04 |
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| CN201320871342.1U Expired - Fee Related CN203630220U (en) | 2013-12-27 | 2013-12-27 | Electronic watt-hour meter with zero line falling detection function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977444A (en) * | 2015-06-29 | 2015-10-14 | 宁波三星智能电气有限公司 | Current sampling circuit |
| CN110873821A (en) * | 2018-09-02 | 2020-03-10 | 青岛鼎信通讯科技有限公司 | Function design of electricity meter capable of preventing electricity stealing during zero line dropping measurement |
| CN113960341A (en) * | 2021-10-27 | 2022-01-21 | 成都长城开发科技有限公司 | Ammeter and zero line detection circuitry falls thereof |
| CN115951117A (en) * | 2022-06-22 | 2023-04-11 | 成都长城开发科技股份有限公司 | Current detection circuit for electric energy meter and electric energy meter |
-
2013
- 2013-12-27 CN CN201320871342.1U patent/CN203630220U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977444A (en) * | 2015-06-29 | 2015-10-14 | 宁波三星智能电气有限公司 | Current sampling circuit |
| CN104977444B (en) * | 2015-06-29 | 2017-12-12 | 宁波三星智能电气有限公司 | A kind of current sampling circuit |
| CN110873821A (en) * | 2018-09-02 | 2020-03-10 | 青岛鼎信通讯科技有限公司 | Function design of electricity meter capable of preventing electricity stealing during zero line dropping measurement |
| CN113960341A (en) * | 2021-10-27 | 2022-01-21 | 成都长城开发科技有限公司 | Ammeter and zero line detection circuitry falls thereof |
| CN113960341B (en) * | 2021-10-27 | 2023-08-04 | 成都长城开发科技股份有限公司 | Electric meter and its neutral line detection circuit |
| CN115951117A (en) * | 2022-06-22 | 2023-04-11 | 成都长城开发科技股份有限公司 | Current detection circuit for electric energy meter and electric energy meter |
| CN115951117B (en) * | 2022-06-22 | 2025-10-28 | 成都长城开发科技股份有限公司 | Current detection circuit for electric energy meter and electric energy meter |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20191227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |