CN102074075A - Single-phase local prepayment intelligent electric energy meter - Google Patents
Single-phase local prepayment intelligent electric energy meter Download PDFInfo
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- CN102074075A CN102074075A CN2010106000115A CN201010600011A CN102074075A CN 102074075 A CN102074075 A CN 102074075A CN 2010106000115 A CN2010106000115 A CN 2010106000115A CN 201010600011 A CN201010600011 A CN 201010600011A CN 102074075 A CN102074075 A CN 102074075A
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Abstract
The invention provides a single-phase local prepayment intelligent electric energy meter and relates to the technical field of electric energy meters. The single-phase local prepayment intelligent electric energy meter overcomes the defects in the prior art and judges whether electricity is stolen or not by monitoring whether the current of a live wire is balanced with that of a zero line or not. The single-phase local prepayment intelligent electric energy meter provided by the invention comprises a meter case, a magnetic latching relay and an integrated circuit board, wherein the integrated circuit board comprises a measuring unit, a central processing unit (CPU) control unit, a communication unit, a data storage unit, a liquid crystal display (LCD) display unit, a power supply and the like; the LCD display unit adopts a double-drive power supply control circuit; and the communication unit comprises a power line carrier communication unit, an RS485 communication unit and an infrared communication unit. The single-phase local prepayment intelligent electric energy meter has the characteristics of high integrated level, high compatibility, low cost, reliable communication, low power consumption and the like, and has the most prominent characteristic of compatibility with two prepayment rechargeable modes of CPU card prepayment and remote communication prepayment.
Description
Technical field
The present invention relates to a kind of electric energy meter, particularly a kind of single-phase local prepayment intelligent electric energy meter.
Background technology
Electric energy meter is as the specially-used measuring instrument of electric energy user power utilization amount, experienced the development from induction type electric energy meter to the full electronic electric energy meter, wherein the full electronic electric energy meter has experienced developing stage such as common electrical minor electric energy meter, multi-rate meter, prepayment meter, multifunctional electric energy meter again on function.
In various electric energy meters in the market, have mainly that cost is higher, power consumption is higher, problem such as insufficiency and communication reliability are low, the present invention is in order to overcome the deficiencies in the prior art, whether balance judges whether to exist the stealing situation to adopt monitoring live wire electric current and neutral line current, and the single-phase local prepayment intelligent electric energy meter that provides has integrated level height, compatible good, characteristics such as cost is low, reliable communications, low-power consumption; The most outstanding characteristics are to have compatible local cpu card pre-payment and two kinds of prepaying charge modes of telecommunication pre-payment simultaneously.
Summary of the invention
The present invention is in order to overcome the deficiencies in the prior art part, a kind of single-phase local prepayment intelligent electric energy meter to be provided.It comprises watchcase, magnetic latching relay and surface-mounted integrated circuit; Described magnetic latching relay and surface-mounted integrated circuit are installed in the watchcase; Described surface-mounted integrated circuit is made up of metering units, CPU control module, communication unit, data storage cell, LCD display unit and power supply etc.; Described LCD display unit has adopted two driving power control circuits, and described communication unit comprises: power line carrier communication unit, RS485 communication unit, infrared communication unit.
Major function of the present invention comprises: two-way electric energy metrical; Parameter measurements such as voltage, electric current, power; Information stores and processing; Monitoring in real time; Automatically control; Information interaction; LCD shows; The incident storage; Power down protection; The power line carrier data communication; Functions such as CPU card pre-payment.
Compared with prior art, principal feature of the present invention is as follows: 1, integrated level height: more adopt large-scale design of integrated circuit, reduced the quantity of peripheral component, thereby increased the integrated level and the reliability of product; 2, compatible good: for the LCD display driving part, adopted two driving power control circuits, like this can better compatible 5V and the LCD liquid crystal display of 3V power supply power supply.Automatic switching function is finished in the cooperation of main dependence software program and hardware circuit; 3, low-power consumption: under battery powered situation, guarantee that LCD shows electric quantity data, this just requires to have lower power consumption guaranteeing that battery can not have electricity in the term of validity of product, and the power consumption of the present invention's design reaches about 12 microamperes, low in energy consumption nearly 20 microamperes than existing electric energy meter; 4, three kinds of telecommunication modes: power line carrier communication, RS485 interface communication, infrared communication.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present invention; Fig. 2 is the metering circuit schematic diagram; Fig. 3 is power circuit principle figure; Fig. 4 is the cpu circuit schematic diagram; Fig. 5 is the display circuit schematic diagram; Fig. 6 is the real time clock circuit schematic diagram; Fig. 7 is the memory circuitry schematic diagram; Fig. 8 is the power line carrier, PLC circuit theory diagrams; Fig. 9 is an infrared ray circuit schematic diagram; Figure 10 is RS485 interface communication circuit theory diagrams.
Embodiment
Embodiment one: as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, shown in Figure 7, the described single-phase local prepayment intelligent electric energy meter of this embodiment.It comprises watchcase, magnetic latching relay and surface-mounted integrated circuit; Described magnetic latching relay and surface-mounted integrated circuit are installed in the watchcase; Described surface-mounted integrated circuit is made up of metering units, CPU control module, communication unit, data storage cell, LCD display unit and power supply etc.; Described LCD display unit has adopted two driving power control circuits,
As Fig. 8, Fig. 9, shown in Figure 10, described communication unit comprises: power line carrier communication unit, RS485 communication unit, infrared communication unit.
Major function of the present invention comprises: two-way electric energy metrical; Parameter measurements such as voltage, electric current, power; Information stores and processing; Monitoring in real time; Automatically control; Information interaction; LCD shows; The incident storage; Power down protection; The power line carrier data communication; Functions such as CPU card pre-payment.
Compared with prior art, main feature of the present invention is as follows: 1, integrated level height: more adopt large-scale design of integrated circuit, reduced the quantity of peripheral component, thereby increased integrated level and the reliability of product; 2, compatible good: for the LCD display driving part, adopted two driving power control circuits, like this can better compatible 5V and the LCD liquid crystal display of 3V Power supply. Automatic switching function is finished in the cooperation of main dependence software program and hardware circuit; 3, low-power consumption: in battery powered situation, guarantee that LCD shows electric quantity data, this just requires to have lower power consumption guaranteeing that battery can not have electricity in the term of validity of product, and the power consumption of the present invention's design reaches about 12 microamperes, low in energy consumption nearly 20 microamperes than existing electric energy meter; 4, three kinds of telecommunication modes: power line carrier communication, RS485 interface communication, infrared communication.
Claims (1)
1. single-phase local prepayment intelligent electric energy meter is characterized in that described single-phase local prepayment intelligent electric energy meter comprises watchcase, magnetic latching relay and surface-mounted integrated circuit; Described magnetic latching relay and surface-mounted integrated circuit are installed in the watchcase; Described surface-mounted integrated circuit is made up of metering units, CPU control module, communication unit, data storage cell, LCD display unit and power supply etc.; Described LCD display unit has adopted two driving power control circuits; Described communication unit comprises: power line carrier communication unit, RS485 communication unit, infrared communication unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106000115A CN102074075A (en) | 2010-12-22 | 2010-12-22 | Single-phase local prepayment intelligent electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106000115A CN102074075A (en) | 2010-12-22 | 2010-12-22 | Single-phase local prepayment intelligent electric energy meter |
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| Publication Number | Publication Date |
|---|---|
| CN102074075A true CN102074075A (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010106000115A Pending CN102074075A (en) | 2010-12-22 | 2010-12-22 | Single-phase local prepayment intelligent electric energy meter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243271A (en) * | 2011-06-15 | 2011-11-16 | 杭州炬华科技股份有限公司 | Single-phase local cost control intelligent electric energy meter |
| CN103176039A (en) * | 2011-12-20 | 2013-06-26 | 杨东明 | Embedded intelligent electric energy meter |
| CN110086503A (en) * | 2019-02-26 | 2019-08-02 | 海盐德创电子有限公司 | A kind of single-phase carrier module testing emulation table |
Citations (5)
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| CN2786636Y (en) * | 2004-07-27 | 2006-06-07 | 西安鲁瑞供电自动化有限公司 | Electronic type prepay carrier wave electric energy meter |
| CN101144832A (en) * | 2006-09-14 | 2008-03-19 | 北京航空航天大学 | Single phase electric energy meter based on internet |
| CN201336059Y (en) * | 2008-12-31 | 2009-10-28 | 骆勇强 | Multifunctional prepaid electric energy meter |
| CN201518045U (en) * | 2009-09-29 | 2010-06-30 | 临沂市信友电器有限公司 | RS485 smart meter |
| CN201955840U (en) * | 2010-12-22 | 2011-08-31 | 哈尔滨电工仪表研究所 | Local single-phase prepaid intelligent electric energy meter |
-
2010
- 2010-12-22 CN CN2010106000115A patent/CN102074075A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2786636Y (en) * | 2004-07-27 | 2006-06-07 | 西安鲁瑞供电自动化有限公司 | Electronic type prepay carrier wave electric energy meter |
| CN101144832A (en) * | 2006-09-14 | 2008-03-19 | 北京航空航天大学 | Single phase electric energy meter based on internet |
| CN201336059Y (en) * | 2008-12-31 | 2009-10-28 | 骆勇强 | Multifunctional prepaid electric energy meter |
| CN201518045U (en) * | 2009-09-29 | 2010-06-30 | 临沂市信友电器有限公司 | RS485 smart meter |
| CN201955840U (en) * | 2010-12-22 | 2011-08-31 | 哈尔滨电工仪表研究所 | Local single-phase prepaid intelligent electric energy meter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243271A (en) * | 2011-06-15 | 2011-11-16 | 杭州炬华科技股份有限公司 | Single-phase local cost control intelligent electric energy meter |
| CN103176039A (en) * | 2011-12-20 | 2013-06-26 | 杨东明 | Embedded intelligent electric energy meter |
| CN110086503A (en) * | 2019-02-26 | 2019-08-02 | 海盐德创电子有限公司 | A kind of single-phase carrier module testing emulation table |
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Application publication date: 20110525 |