CN202339367U - Remote single-phase charge control intelligent electric energy meter - Google Patents
Remote single-phase charge control intelligent electric energy meter Download PDFInfo
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- CN202339367U CN202339367U CN2011205015202U CN201120501520U CN202339367U CN 202339367 U CN202339367 U CN 202339367U CN 2011205015202 U CN2011205015202 U CN 2011205015202U CN 201120501520 U CN201120501520 U CN 201120501520U CN 202339367 U CN202339367 U CN 202339367U
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Abstract
The utility model discloses a remote single-phase charge control intelligent electric energy meter, which comprises a microprocessor, an electric energy meter metering unit, a voltage sampling unit, a current sampling unit and a power circuit, wherein the signal output ends of the voltage sampling unit and the current sampling unit are connected with the signal input end of the electric energy meter metering unit; the data output end of the electric energy meter metering unit is connected with the data input end of the microprocessor; the output end of the microprocessor is connected with a liquid crystal display (LCD) display module, a relay control output interface, a second signal output interface and an electric energy pulse output interface; the control input end of the microprocessor is connected with a key; the microprocessor is also connected with a clock circuit, a memory, an infrared communication circuit and a serial communication circuit; the power input end of the power circuit is connected with a storage battery; and the power output end of the power circuit is connected with the power input end of the electric energy meter metering unit, the power input end of the microprocessor and the power input end of the serial communication circuit respectively. The technical scheme has an independent infrared communication interface and an RS485 communication interface, and a remote charge control function is supported.
Description
Technical field
The present technique scheme belongs to electric power metering device, specifically is a kind of long-range single-phase expense control intelligent electric energy meter.
Background technology
In the prior art, because the limitation of use occasion, for example city, rural area or factory and enterprise etc., meter reading personnel's workload is very big, and, also be not easy to control.In addition because the situation of application scenario is different, stable, the reliability of electric energy meter there is the higher requirement of ratio.
Summary of the invention
In order to solve the problems referred to above that exist in the prior art, the present technique scheme proposes a kind of new long-range single-phase control intelligent electric energy meter that takes, and is specific as follows:
A kind of long-range single-phase control intelligent electric energy meter that takes comprises microprocessor, electric energy meter metering units, voltage sample unit, current sampling unit and power circuit; The signal output part of said voltage sample unit and current sampling unit is connected the signal input part of electric energy meter metering units; The data output end of electric energy meter metering units connects the data input pin of microprocessor;
The output terminal of said microprocessor is connected with LCD display module, relay control output interface, second signal output interface, electrical energy pulse output interface; The control input end of microprocessor is connected with button; Microprocessor also is connected with clock circuit, storer, infrared communication circuit and serial communication circuit;
The power input of said power circuit is connected with accumulator, and the power output end of power circuit connects the power input of electric energy meter metering units, the power input of microprocessor and the power input of serial communication circuit respectively.
Said electric energy meter metering units is electric energy meter computation chip ADE7755.
Said voltage sample unit is a resistor voltage divider network.
Said current sampling unit adopts copper-manganese resistance as sampling resistor.
The principle of this electric energy meter is; Tested alternating voltage and electric current are through delivering to special-purpose electric energy computation chip through after a series of digital processings behind the sampling with high precision; Convert the pulse duration frequency signal that is directly proportional with active power to and give microprocessor; Microprocessor carries out timesharing with pulse signal according to the period rate and adds up, and obtains total electric weight and each rate electric weight, and the result is saved in the data memory.Microprocessor is accomplished the function that shows and carry out message exchange with outside (infrared, 485 communications, electrical energy pulse output, second signal output, relay control and button input) simultaneously, and its theory diagram is as shown in Figure 1.
The present technique scheme has independently infrared and RS485 communication interface circuit, supports long-range expense control function; Advantages such as that this table has is highly reliable, high precision, long-life.It is wide that its adapts to voltage range, and complete machine need not be adjusted after dispatching from the factory.
Description of drawings
Fig. 1 is the theory diagram of present technique scheme.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present technique scheme is further specified as follows:
With reference to figure 1, a kind of long-range single-phase control intelligent electric energy meter that takes comprises microprocessor, electric energy meter metering units, voltage sample unit, current sampling unit and power circuit; The signal output part of said voltage sample unit and current sampling unit is connected the signal input part of electric energy meter metering units; The data output end of electric energy meter metering units connects the data input pin of microprocessor; The output terminal of said microprocessor is connected with LCD display module, relay control output interface, second signal output interface, electrical energy pulse output interface; The control input end of microprocessor is connected with button; Microprocessor also is connected with clock circuit, storer, infrared communication circuit and serial communication circuit; The power input of said power circuit is connected with accumulator, and the power output end of power circuit connects the power input of electric energy meter metering units, the power input of microprocessor and the power input of serial communication circuit respectively.
In this example, said electric energy meter metering units is electric energy meter computation chip ADE7755.Said voltage sample unit is a resistor voltage divider network.Said current sampling unit adopts copper-manganese resistance as sampling resistor.
This electric energy meter can satisfy function and the performance requirement that has the remote power table now by the existing ripe circuit module circuit and the control/calculation function of microprocessor.Through the programming to microprocessor, the major function of the electric energy meter that this is routine is following:
1, function of measuring
A) have forward active energy, reverse active energy function of measuring, can store its data, and it is meritorious that combination can be set in view of the above.
B) have the time-sharing measurement function, active energy by the corresponding period add up, store total, point, peak respectively, put down, the paddy electric flux.
C) can store total electric energy and each rate electric flux of 12 months; The data storage boundary is the 24 o'clock the end of month constantly, or the integral point in every month No. 1 to No. 28 constantly.
2, take the control function
Remote mode is realized through RS485 virtual medium and long-range electricity-selling system.
2.1, the long-range control electric energy meter that takes
The electricity charge are calculated and in long-range electricity-selling system, to be accomplished, and do not store in the table, demonstration and the electricity charge, electricity price relevant information.Electric energy meter receiving remote electricity-selling system issues operates a switch, allows to close a floodgate, during ESAM data copy reading instruction, need through strict password authentification and safety certification.
Can be provided with the power consumption parameter in the electric energy meter through virtual medium;
2.2, safety certification encrypts requirement
Through solid state medium or virtual medium electric energy meter is carried out the parameter setting, the electricity charge that prestore, when information is returned and write and issue the remote control command operation, needs through safety certifications such as strict password authentification or ESAM modules, reliable to guarantee data transmission security.The AES of ESAM module should meet the relevant policies of national Password Management, uses the SM1 algorithm.
3, logout
A) generation of permanent recording electric energy meter zero clearing incident constantly and the electric energy data during zero clearing.
B) record programming total degree, the Data Identification of the moment of nearest 10 programmings, operator's code, programming item.Adopt
The moment, operator's code when c) record total degree (when not comprising the broadcasting school) during the school, nearest 10 schools.
D) total degree of record power down, the moment that nearest 10 power down take place and finish.
E) nearest 10 Long-distance Control of record are operated a switch and nearest 10 Long-distance Control combined floodgate incidents, and record draws, data such as the moment and electric flux take place the combined floodgate incident.
F) record game clock lid total degree, generation, the finish time of nearest 10 game clock lid incident.
4, rate, period and electricity price scheme
Have two cover tariff period tables, can change automatically in the moment of agreement; Every cover rate is supported 4 rates at least.
Have calendar, clock, should can be provided with 2 time zones the whole year at least, in 24h, can programme arbitrarily 8 periods at least; The minimum interval of period is 15min; Period can cross over reset.
Have two cover electricity price schemes, change automatically in the time of can or reaching the power consumption level of agreement in moment of agreement.
Support through infrared, RS485 communication interface revise rate scale, the time segment table and electricity price scheme, the safety practice that prevents that unauthorized people from operating is arranged.
5, Presentation Function
A) electric energy meter can show following information:
1) of that month and monthly totally power consumption last month;
2) each rate accumulative total electric flux indicating value and total accumulative total electric flux indicating value;
3) current time;
4) alarm code or prompting;
5) communications status prompting;
6) table number of electric energy meter.
B) the electric weight unit of display is kilowatt hour (kWh), and figure place showing is 8, contains 2 decimals.
C) the LCD mode of waking up backlight, comprise that button wakes up, infrared waking up (infrared equipment all can wake up arbitrarily), etc. mode; Under normal operating position, the LCD life-span is not less than 10 years.
Can wake demonstration (backlight can not lighted) up through button when d) having a power failure; Wake the back up as do not have operation, LCD should close after showing a circulation automatically automatically; The button display operation finishes to close demonstration automatically after 30 seconds.
E) pilot lamp :-pulse pilot lamp: redness, go out at ordinary times, glimmer during the metering active energy;
-alarm lamp: redness, just often go out, it is bright often to report to the police.
-tripping operation pilot lamp: yellow, bright during the on-load switch disjunction, go out at ordinary times.
6, freezing function
Regularly freeze: electric energy data is freezed at time by appointment and interval; Each amount of freezing is preserved 12 times at least.
Instantaneous freezing: under improper situation, freeze the data of current calendar, time, all electric fluxs and important measuring amount; The instantaneous amount of freezing should be preserved last 3 times data.
Agreement is freezed: think in the old and new two cover rates/periods conversion, the conversion of ladder electricity price or Utilities Electric Co. and freeze to change electric flux and other significant datas constantly when special requirement is arranged, preserve last 2 freezing data.
Day freezes: storage electric flux constantly at zero point every day, should store bimestrial data.
Integral point freezes: the storage integral point moment or the least bit meritorious total electric energy constantly, should store 96 data.
The Data Identification that freezes content and correspondence should meet the DL/T 645-2007 and the documentation requirements of putting on record thereof.
7, clocking capability
Employing has the built in hardware clock circuit of temperature compensation function, has calendar, timing, leap year auto-conversion function; Internal clocking terminal output frequency is 1Hz.In 25～+ 60 ℃ of temperature ranges, the clock accuracy≤± 1s/d; Under reference temperature (23 ℃), the clock accuracy≤± 0.5s/d.
Scope must not be greater than 5min during the acceptable broadcasting of electric energy meter school; Key and signal code cooperation need not to programme during the broadcasting school; Number of times can be provided with (default to when only allowing the school every day once) as requested when allowed the school every day, and should avoid electric energy meter carry out freeze or settlement data unloading operation before and after carry out in the 5min.
Claims (4)
1. the long-range single-phase control intelligent electric energy meter that takes is characterized in that comprising microprocessor, electric energy meter metering units, voltage sample unit, current sampling unit and power circuit; The signal output part of said voltage sample unit and current sampling unit is connected the signal input part of electric energy meter metering units; The data output end of electric energy meter metering units connects the data input pin of microprocessor;
The output terminal of said microprocessor is connected with LCD display module, relay control output interface, second signal output interface, electrical energy pulse output interface; The control input end of microprocessor is connected with button; Microprocessor also is connected with clock circuit, storer, infrared communication circuit and serial communication circuit;
The power input of said power circuit is connected with accumulator, and the power output end of power circuit connects the power input of electric energy meter metering units, the power input of microprocessor and the power input of serial communication circuit respectively.
2. the long-range single-phase control intelligent electric energy meter that takes according to claim 1 is characterized in that said electric energy meter metering units is electric energy meter computation chip ADE7755.
3. the long-range single-phase control intelligent electric energy meter that takes according to claim 1 is characterized in that said voltage sample unit is a resistor voltage divider network.
4. the long-range single-phase control intelligent electric energy meter that takes according to claim 1 is characterized in that said current sampling unit adopts copper-manganese resistance as sampling resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205015202U CN202339367U (en) | 2011-12-06 | 2011-12-06 | Remote single-phase charge control intelligent electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205015202U CN202339367U (en) | 2011-12-06 | 2011-12-06 | Remote single-phase charge control intelligent electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202339367U true CN202339367U (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205015202U Expired - Fee Related CN202339367U (en) | 2011-12-06 | 2011-12-06 | Remote single-phase charge control intelligent electric energy meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181386A (en) * | 2014-09-03 | 2014-12-03 | 哈尔滨电工仪表研究所 | Single-phase fee charged intelligent ammeter |
-
2011
- 2011-12-06 CN CN2011205015202U patent/CN202339367U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181386A (en) * | 2014-09-03 | 2014-12-03 | 哈尔滨电工仪表研究所 | Single-phase fee charged intelligent ammeter |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120718 Termination date: 20131206 |