CN101482993A - Direct access type valve-controlled electronic electric energy meter - Google Patents
Direct access type valve-controlled electronic electric energy meter Download PDFInfo
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- CN101482993A CN101482993A CNA2009101172201A CN200910117220A CN101482993A CN 101482993 A CN101482993 A CN 101482993A CN A2009101172201 A CNA2009101172201 A CN A2009101172201A CN 200910117220 A CN200910117220 A CN 200910117220A CN 101482993 A CN101482993 A CN 101482993A
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- electric energy
- energy meter
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Abstract
The present invention relates to an electronic type electric energy meter, specifically to a direct access type valve control electronic type electric energy meter, including a shell, and an MCU and its control circuit installed in the shell, which has features that the MCU is electrically connected to a large current relay through a relay driver circuit, the output contacts of the relay are in connection in series between the electric network and the subscriber lines, and the relay is installed inside the shell. The present invention proposes a direct access type valve control electric energy meter with built-in high-current relay, wide-voltage and wide range, so that the improved energy meter is easier to install, and also can prevent contradictions and disputes brought by external electrical switching equipment.
Description
Technical field
The present invention relates to a kind of electronic electric energy meter, especially directly the access type valve-controlled electronic electric energy meter.
Background technology
Since the reform and opening-up, great development along with national economy, the adjustment change of the industrial structure and management system and the rapid raising of living standards of the people, great changes have also all taken place for electricity consumption formation and power load situation in China, and the contradiction of power supply and demand is also more and more serious.Advocate energy-saving and emission-reduction same periods in country, in the time of the electricity needs anxiety, in order to reduce the regional power supply load effectively, improve effective utilization of electric energy, regulate electricity supply and demand, alleviate imbalance between power supply and demand, guarantee electric power netting safe running, the use of prepayment meter is more and more universal.
Three-phase electronic prepayment electric power table in the past is because of its measures range narrow (reaching 5 times of overloads at most), operating voltage range is narrow and realize that pre paid functionality needs join control devices such as air switch outward, cause user's field management difficulty, owing to join air switch outside adopting, often cause that the dispute of power consumption contradiction is difficult to solve.
Summary of the invention
The purpose of this invention is to provide a kind of direct access type valve-controlled electronic electric energy meter, adopt built-in high-current relay as control user power utilization whether switching mode, reduced the electric switch equipment that ammeter is joined outward, realize the automatic leading subscriber power mode of ammeter, avoided outer distribution air cock quality problems and the power consumption contradiction dispute that causes.
For achieving the above object, the technical solution used in the present invention is:
A kind of direct access type valve-controlled electronic electric energy meter, comprise shell and installation MCU and control circuit thereof in the enclosure, its special feature is, described MCU is electrically connected with a high-current relay by relay drive circuit, the output contact of this relay is connected between electrical network and the subscribers feeder, and this relay is installed in the described shell.
Wherein MCU is electrically connected with power line carrier, PLC module or infrared communication module by interface circuit.
Further, also comprise power circuit, this power circuit adopts the pulse-width modulation type Switching Power Supply.
The invention has the beneficial effects as follows:
1, the present invention is applied to the IC-card technology of present information in the electric energy meter, has waterproof, characteristics such as antimagnetic, and observing and controlling is accurate, security and reliability height, the management mode of the back electricity consumption that realized paying the fees earlier.
2, adopted the built-in high-current relay of three-phase as control user power utilization whether switching mode in the table, reduced the electric switch equipment that ammeter is joined outward, realize ammeter automatic management user power utilization management mode fully, stopped the power consumption contradiction dispute that causes because of the outer distribution air cock quality problems of ammeter.
3, adopt threephase switch power supply powering mode, make ammeter can be under the power grid environment of 150VAC to 300VAC operate as normal, because the efficient of Switching Power Supply is very high, thereby (Overall Power Consumption of ammeter is no more than 0.8W to make the Overall Power Consumption of ammeter, national standard requires to be no more than 2W) well below request of national standard, the waste of the energy that made itself and big minimizing.
4, ammeter possesses perfect communication function, can carry out communication by far infrared, power carrier or RS485 communication interface, can copy all power informations in the telegram in reply table, can realize centralized automatic meter-reading and telemanagement, make things convenient for power supply department in time accurately to add up grid line loss, supervisory user electricity consumption situation in real time.Also possesses remote on/off electric work energy simultaneously.
Description of drawings
Accompanying drawing 1 is a logic theory block diagram of the present invention.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing:
Purpose of design of the present invention is the electric energy metrical demand for the three-phase electricity consumption user of the demand that satisfies present Electricity Demand side management and medium and small sized enterprises, commercial electricity consumption, researchs and develops the valve control electric energy meter of a kind of novel direct access type, built-in high-current relay, wide voltage, wide-range.
The direct access type valve of the present invention control electric energy meter is realized by following technical scheme:
The electric energy meter design mainly comprises the relay and the control circuit thereof of ic for energy metering, function controlling part parallel circuit, power circuit and three phase combined low contact voltage, big discharge capacity.
The function controlling part parallel circuit adopts the advanced person's that Japanese NEC Corporation produces low-power consumption, large scale integrated circuit MCU as central processing unit, by management LCD display circuit, clock circuit, IC-card interface circuit, control relay circuit etc., carry out the calculating and the processing of electric energy metrical pulse in real time, thus realize electric energy meter demonstration, purchase various management functions and electric energy tally function such as electricity.
Ic for energy metering adopts international computation chip ADE7752 advanced, the high-precision wide range as the metering core, by real-time sampling to the electric current and voltage of user load, be converted to a series of high speed processing such as digital signal through inner 32 high-precision A of computation chip, realize that electric energy transforms into pulse signal, the core MCU that offers function control circuit provides the measuring accuracy calibration equipment as the sampled signal of electric energy counting and by photoelectric isolating device, realizes the verification of the measuring accuracy of electric energy meter.
Power circuit adopts the core processor of the power management chip TNY254 of U.S. PI company production as power circuit, with a kind of pulse-width modulation type Switching Power Supply of auto-excitation type ON/OFF control mode as the control model design, for the ammeter complete machine provides the energy.
The relay of three phase combined low contact voltage, big discharge capacity and the design of control circuit thereof mainly are to adopt advanced three phase combined high-current relay, the MCU of electric energy meter is by the driving of its control circuit to relay, be switched on or switched off the user power utilization load circuit, thereby realize pre paid functionality.
As shown in Figure 1, open an account, get IC-card after paying the fees when the user handles to Utilities Electric Co., insert ammeter, purchasing electric weight is input in the ammeter the built-in high-current relay closure of electric energy meter, the automatic connecting subscribers participating circuit of ammeter, the hummer prompting in the ammeter simultaneously, the prompting user can normally use.Electric energy meter from driving wheel show dump energy, total electricity consumption, always with information such as table numbers.Ammeter can show current total electricity consumption, dump energy, time on date, table number, table constant, last month, the month before last information such as electric weight of electric energy meter by the button page turning.When user power utilization was used the dump energy alarming value of ammeter setting, the electric energy meter automatically prompting user went to purchase as early as possible.When dump energy was zero, electric energy meter was purchased electricity again until the user and can be recovered electricity consumption by showing the electricity consumption that interior high-current relay cuts off the user automatically.
Claims (3)
1, a kind of direct access type valve-controlled electronic electric energy meter, comprise shell and installation MCU and control circuit thereof in the enclosure, it is characterized in that: described MCU is electrically connected with a high-current relay by relay drive circuit, the output contact of this relay is connected between electrical network and the subscribers feeder, and this relay is installed in the described shell.
2, direct access type valve-controlled electronic electric energy meter as claimed in claim 1, it is characterized in that: wherein MCU is electrically connected with power line carrier, PLC module or infrared communication module by interface circuit.
3, direct access type valve-controlled electronic electric energy meter as claimed in claim 1 or 2 is characterized in that: also comprise power circuit, this power circuit adopts the pulse-width modulation type Switching Power Supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101172201A CN101482993A (en) | 2009-02-10 | 2009-02-10 | Direct access type valve-controlled electronic electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101172201A CN101482993A (en) | 2009-02-10 | 2009-02-10 | Direct access type valve-controlled electronic electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101482993A true CN101482993A (en) | 2009-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101172201A Pending CN101482993A (en) | 2009-02-10 | 2009-02-10 | Direct access type valve-controlled electronic electric energy meter |
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| Country | Link |
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| CN (1) | CN101482993A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075013A (en) * | 2010-12-01 | 2011-05-25 | 河南省科学院应用物理研究所有限公司 | Method and device for remotely controlling household electricity load |
| CN108982937A (en) * | 2018-05-08 | 2018-12-11 | 国网天津市电力公司 | A kind of system for solving high pressure meter power loss and can not far adopting communication |
-
2009
- 2009-02-10 CN CNA2009101172201A patent/CN101482993A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075013A (en) * | 2010-12-01 | 2011-05-25 | 河南省科学院应用物理研究所有限公司 | Method and device for remotely controlling household electricity load |
| CN108982937A (en) * | 2018-05-08 | 2018-12-11 | 国网天津市电力公司 | A kind of system for solving high pressure meter power loss and can not far adopting communication |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090715 |