CN209296768U - Copper-manganese three-phase electric energy meter - Google Patents
Copper-manganese three-phase electric energy meter Download PDFInfo
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- CN209296768U CN209296768U CN201821454076.1U CN201821454076U CN209296768U CN 209296768 U CN209296768 U CN 209296768U CN 201821454076 U CN201821454076 U CN 201821454076U CN 209296768 U CN209296768 U CN 209296768U
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Abstract
The utility model discloses a kind of copper-manganese three-phase electric energy meters, belong to electric energy meter technical field.The electric energy meter includes electric energy meter shell and the circuit board that is placed in electric energy meter shell, there is openable and closable cover, metering module, LCD display module, external communication module, the anti-electricity-theft detection module, power supply module that main control module is provided on the circuit board while being electrically connected with the main control module on the electric energy meter shell.The beneficial effect is that the copper-manganese three-phase electric energy meter is small in size at low cost；There is sample circuit between the sampling end and metering chip of manganese copper diverter, ensure that the accuracy of voltage and current signal sampling；Light-coupled isolation is used between metering chip and main control module, protects circuit；With anti-electricity-theft detection module, ammeter can be detected in time there is stealing electricity phenomenon and handle in time.
Description
Technical field
The utility model belongs to electric energy meter technical field, and in particular to copper-manganese three-phase electric energy meter.
Background technique
As the continuous development of national smart grid is grown, end product of the electric energy meter as smart grid, yield is got over
Come bigger, and is widely applied in the city and rural power grids in China.But traditional three-phase electric energy meter is national grid public affairs
The three-phase electric energy meter that customizes according to oneself development plan is taken charge of, these electric energy table functions are various, volume is big, at high cost and to some fields
Conjunction is inconvenient to install.For this purpose, the device for introducing copper-manganese piece as current sample is applied to three-phase kilowatt-hour meter as technology develops
In, so that electric energy meter is small in size at low cost.But between the sampling metering and main control unit of this traditional Manganin electric energy meter
There is no quarantine measures, be easy to cause circuit damage in use.On the other hand, traditional Manganin electric energy meter is generally all without anti-electricity-theft
Measure, uses dangerous, is easy to happen stealing electricity phenomenon.
Utility model content
The utility model is directed to the situation of the prior art, overcomes drawbacks described above, provides a kind of copper-manganese three-phase electric energy meter.
The utility model uses following technical scheme, the copper-manganese three-phase electric energy meter, including electric energy meter shell and is placed in electricity
Can circuit board in watch case, there is openable and closable cover on the electric energy meter shell, be provided with master control mould on the circuit board
Block, metering module, LCD display module, external communication module, the thief-proof electro-detection mould being electrically connected simultaneously with the main control module
Block, power supply module, in which:
The metering module includes voltage and current of three metering units for electric energy meter acquisition three-phase, and each metering is single
Member includes metering chip and manganese copper diverter, and the voltage input end of the metering chip is electrically connected to use through voltage collection circuit
In the power grid of family, the current input terminal of the metering chip is electrically connected to the manganese copper diverter, the meter through current sampling circuit
The data port of amount chip is electrically connected to the main control module through optical coupling isolation circuit；
The external communication module includes infrared communication unit and RS485 communication unit to realize electric energy meter and external equipment
Communication；
The anti-electricity-theft detection module includes external magnetic field detection unit and game clock lid detection unit, the external magnetic field inspection
It surveys unit and game clock lid detection unit is electrically connected to the main control module.
As a further improvement of the above technical scheme, the manganese copper diverter includes copper-manganese piece, a foundation directrix and two
Root samples line, and the copper-manganese on piece is set there are three weld tabs, and the foundation directrix and two sampling line correspondences are welded on weld tabs,
The current sample for the current input terminal that two samplings line mutually combines together and is electrically connected to the metering chip is electric
Road.
As a further improvement of the above technical scheme, the foundation directrix and two sampling lines and the copper-manganese piece phase
One end of connection is cased with contraction insulating tube.
As a further improvement of the above technical scheme, the copper-manganese three-phase electric energy meter further includes and the main control module electricity
The memory of connection.
As a further improvement of the above technical scheme, it is the EEPROM of 64Kbit that the memory, which selects capacity, described
Memory is used for storing electricity, all kinds of event informations, stealing information.
As a further improvement of the above technical scheme, the copper-manganese three-phase electric energy meter further includes and the main control module electricity
The impulse output circuit of connection, the impulse output circuit are used for detection time output error.
As a further improvement of the above technical scheme, the main control module includes main control chip, and the main control chip is adopted
With single-chip microcontroller HT6015.
Copper-manganese three-phase electric energy meter disclosed by the utility model, the beneficial effect is that, the copper-manganese three-phase electric energy meter is small in size
It is at low cost；There is sample circuit between the sampling end and metering chip of manganese copper diverter, ensure that voltage and current signal sampling
Accuracy；Light-coupled isolation is used between metering chip and main control module, protects circuit；It, can be in time with anti-electricity-theft detection module
There is stealing electricity phenomenon and handles in time in detection ammeter.
Detailed description of the invention
Fig. 1 is the circuit structure block diagram of the preferred embodiment in the utility model.
Fig. 2 is the structural schematic diagram of the manganese copper diverter of the preferred embodiment in the utility model.
Fig. 3 is the circuit diagram of the metering module of the preferred embodiment in the utility model.
Fig. 4 is the circuit diagram of the preferred embodiment in the utility model.
Appended drawing reference includes: 1- manganese copper diverter；11- copper-manganese piece；12- reference line；13- samples line；14- weld tabs；15-
Shrink insulating tube.
Specific embodiment
The utility model discloses a kind of copper-manganese three-phase electric energy meters, below with reference to preferred embodiment, to the utility model
Specific embodiment is further described.
The copper-manganese three-phase electric energy meter, including electric energy meter shell and the circuit board being placed in electric energy meter shell, the electric energy
There is openable and closable cover on watch case.
Referring to Figure 1 of the drawings, Fig. 1 shows the circuit structure block diagram of the utility model, is provided with master on the circuit board
Control module, the metering module being electrically connected simultaneously with the main control module, LCD display module, external communication module, thief-proof electro-detection
Module, power supply module, in which:
The metering module includes voltage and current of three metering units for electric energy meter acquisition three-phase, and each metering is single
Member includes metering chip and manganese copper diverter, and the voltage input end of the metering chip is electrically connected to use through voltage collection circuit
In the power grid of family, the current input terminal of the metering chip is electrically connected to the manganese copper diverter, the meter through current sampling circuit
The data port of amount chip is electrically connected to the main control module through optical coupling isolation circuit；
The external communication module includes infrared communication unit and RS485 communication unit to realize electric energy meter and external equipment
Communication；
The anti-electricity-theft detection module includes external magnetic field detection unit and game clock lid detection unit, the external magnetic field inspection
It surveys unit and game clock lid detection unit is electrically connected to the main control module.
Specifically, the circuit theory of metering module in the present embodiment, the metering mould are shown referring to Fig. 3 of attached drawing, Fig. 3
Block includes voltage and current of three metering units for electric energy meter acquisition three-phase, and each metering units include metering chip
HT7017 and manganese copper diverter 1, the voltage input end (2 feet and 3 feet) of the metering chip HT7017 is through voltage collection circuit electricity
It is connected in consumer networks (L line and N line), the current input terminal (5 feet and 6 feet) of the metering chip HT7017 is through current sample
Circuit is connected to plug terminal CON2, and the manganese copper diverter is connected in circuit and being electrically connected to the plug terminal CON2,
The data output of the metering chip HT7017 and input port (10 feet and 11 feet) are electrically connected to through optical coupling isolator LTV816D
The main control module, the metering chip HT7017 has the function of measuring electric flux, from obtained voltage and current data meter
Energy transfer is calculated to main control module.
Referring to Fig. 2 of attached drawing, Fig. 2 shows the specific structure of manganese copper diverter 1 in the present embodiment, the manganese copper diverters
1 includes copper-manganese piece 11, a foundation directrix 12 and two sampling lines 13, set on the copper-manganese piece 1 there are three weld tabs 14, described one
Reference line 12 and two sampling lines 13 correspondence are welded on weld tabs 14, the foundation directrix 12 and two sampling lines 13 with it is described
One end that copper-manganese piece 11 is connected, which is cased with, shrinks insulating tube 15, and two samplings line 13 mutually combines together and is electrically connected
It is connected on the inserting terminal CON2 of the current sampling circuit of the current input terminal (5 feet and 6 feet) of the metering chip HT7017,
The one foundation directrix 12 is electrically connected on the L line in power grid.
The circuit theory of the present embodiment is shown referring to Fig. 4 of attached drawing, Fig. 4.
Wherein, the main control module includes main control chip, and main control chip uses single-chip microcontroller HT6015.
Wherein, the external communication module includes infrared communication unit and RS485 communication unit to realize electric energy meter and outer
Portion's device talk, the infrared communication unit include infrared receiver tube IR91-21C and its peripheral circuit, the RS485 communication
Unit is not shown using RS485 basic circuit involved in the prior art, and the infrared communication unit and RS485 are logical
News unit is electrically connected to the main control chip HT6015.
Wherein, the anti-electricity-theft detection module includes external magnetic field detection unit and game clock lid detection unit, the outside
Magnetic field detection unit and game clock lid detection unit are electrically connected to the main control module, wherein the external magnetic field detection unit
Including magnetic field detection sensor AH180N, resistance R70, capacitor C65 and diode VD16, the magnetic field detection sensor
1 foot of AH180N is electrically connected to main control module through resistance R70,1 foot of the magnetic field detection sensor AH180N through resistance R70 also
3 feet of magnetic field detection sensor AH180N are electrically connected to, the anode of the diode VD16 is connected to power supply VCC, cathode electrical connection
In 1 foot of magnetic field detection sensor AH180N, cathode is also electrically connected to the 2 of magnetic field detection sensor AH180N through torch C65
Foot, the 2 feet ground connection of magnetic field detection sensor AH180N；The game clock lid detection unit include diode VD17, resistance R74,
R75, R76 and R77, capacitor C68 and C69 and outside plug terminal XC12 and switch button SB2, the diode VD17's
Anode is connected to main control module, and one end of the resistance R77 is electrically connected to the cathode of the diode VD17, the resistance R77's
The other end is electrically connected to the main control module through resistance R76, and the other end of the resistance R77 is also grounded through switch button SB2, institute
It states capacitor C69 and is parallel to switch button SB2,2 feet of the external plug terminal XC12 are electrically connected to described two through resistance R74
2 feet of the cathode of pole pipe VD17, the external plug terminal XC12 are also electrically connected to the main control module through resistance R75, described
2 feet of external plug terminal XC12 are also grounded through capacitor C68, and the 1 foot ground connection of the external plug terminal XC12, electric meter case 1 is opened
Cover is connected on external inserting terminal XC12, and when cover is opened, game clock lid detection circuit will be detected.
Preferably, the copper-manganese three-phase electric energy meter further includes the memory being electrically connected with the main control module.
Specifically, referring to Fig. 4 of attached drawing, it is the EEPROM of 64Kbit that the memory, which selects capacity, and selection signal is
The memory of AT24C256, the memory are used for storing electricity, all kinds of event informations, stealing information.
Preferably, the copper-manganese three-phase electric energy meter further includes the impulse output circuit being electrically connected with the main control module, institute
Impulse output circuit is stated for detection time output error.
For a person skilled in the art, technical solution documented by foregoing embodiments can still be repaired
Change or equivalent replacement of some of the technical features, it is within the spirit and principle of the utility model, made any
Modification, equivalent replacement, improvement etc., should be included in the protection scope of the utility model.
Claims (7)
1. a kind of copper-manganese three-phase electric energy meter, including electric energy meter shell and the circuit board being placed in electric energy meter shell, which is characterized in that
There is openable and closable cover on the electric energy meter shell, be provided on the circuit board main control module, simultaneously with the master control mould
The metering module of block electrical connection, LCD display module, external communication module, anti-electricity-theft detection module, power supply module, in which:
The metering module includes voltage and current of three metering units for electric energy meter acquisition three-phase, and each metering units are equal
Including metering chip and manganese copper diverter, the voltage input end of the metering chip is electrically connected to user's electricity through voltage collection circuit
In net, the current input terminal of the metering chip is electrically connected to the manganese copper diverter, the metering core through current sampling circuit
The data port of piece is electrically connected to the main control module through optical coupling isolation circuit；
The external communication module includes infrared communication unit and RS485 communication unit to realize that electric energy meter and external equipment are logical
News；
The anti-electricity-theft detection module includes external magnetic field detection unit and game clock lid detection unit, and the external magnetic field detection is single
Member and game clock lid detection unit are electrically connected to the main control module.
2. copper-manganese three-phase electric energy meter according to claim 1, which is characterized in that the manganese copper diverter include copper-manganese piece,
One foundation directrix and two sampling lines, the copper-manganese on piece are set there are three weld tabs, the foundation directrix and two sampling lines pair
It should be welded on weld tabs, two samplings line mutually combines together and is electrically connected to the electric current input of the metering chip
The current sampling circuit at end.
3. copper-manganese three-phase electric energy meter according to claim 2, which is characterized in that the foundation directrix and two sampling lines
The one end being connected with the copper-manganese piece is cased with contraction insulating tube.
4. copper-manganese three-phase electric energy meter according to claim 1, which is characterized in that the copper-manganese three-phase electric energy meter further include with
The memory of the main control module electrical connection.
5. copper-manganese three-phase electric energy meter according to claim 4, which is characterized in that it is 64Kbit that the memory, which selects capacity,
EEPROM, the memory be used for storing electricity, all kinds of event informations, stealing information.
6. copper-manganese three-phase electric energy meter according to claim 1, which is characterized in that the copper-manganese three-phase electric energy meter further include with
The impulse output circuit of the main control module electrical connection, the impulse output circuit are used for detection time output error.
7. copper-manganese three-phase electric energy meter according to claim 1, which is characterized in that the main control module includes main control chip,
The main control chip uses single-chip microcontroller HT6015.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821454076.1U CN209296768U (en) | 2018-09-05 | 2018-09-05 | Copper-manganese three-phase electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821454076.1U CN209296768U (en) | 2018-09-05 | 2018-09-05 | Copper-manganese three-phase electric energy meter |
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| Publication Number | Publication Date |
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| CN209296768U true CN209296768U (en) | 2019-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821454076.1U Active CN209296768U (en) | 2018-09-05 | 2018-09-05 | Copper-manganese three-phase electric energy meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794207A (en) * | 2019-11-14 | 2020-02-14 | 浙江晨泰科技股份有限公司 | Three-phase manganin sampling alternating current guide rail meter |
-
2018
- 2018-09-05 CN CN201821454076.1U patent/CN209296768U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794207A (en) * | 2019-11-14 | 2020-02-14 | 浙江晨泰科技股份有限公司 | Three-phase manganin sampling alternating current guide rail meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 314000 grand road of Yu Nan village, Yu Xin Town, Nanhu District, Jiaxing City, Zhejiang Patentee after: Jiaxing Xinghao Instrument Co., Ltd Address before: 314000 grand road of Yu Nan village, Yu Xin Town, Nanhu District, Jiaxing City, Zhejiang Patentee before: JIAXING XINGHAO INSTRUMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 314000 Datong Road, Yuxin Town, Yunan village, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Xinghao Technology Co., Ltd Address before: 314000 Datong Road, Yuxin Town, Yunan village, Nanhu District, Jiaxing City, Zhejiang Province Patentee before: Jiaxing Xinghao Instrument Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |