CN103149400A - Intelligent ammeter in remote single phase cost control - Google Patents
Intelligent ammeter in remote single phase cost control Download PDFInfo
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- CN103149400A CN103149400A CN 201110399711 CN201110399711A CN103149400A CN 103149400 A CN103149400 A CN 103149400A CN 201110399711 CN201110399711 CN 201110399711 CN 201110399711 A CN201110399711 A CN 201110399711A CN 103149400 A CN103149400 A CN 103149400A
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- 238000004891 communication Methods 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 17
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 5
- 239000004973 liquid crystal related substance Substances 0.000 abstract 1
- 230000006870 function Effects 0.000 description 13
- 230000004907 flux Effects 0.000 description 8
- 230000005611 electricity Effects 0.000 description 7
- 230000008014 freezing Effects 0.000 description 5
- 238000007710 freezing Methods 0.000 description 5
- 102100038591 Endothelial cell-selective adhesion molecule Human genes 0.000 description 3
- 101000882622 Homo sapiens Endothelial cell-selective adhesion molecule Proteins 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003203 everyday effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002618 waking effect Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
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Abstract
The invention discloses an intelligent ammeter in a remote single phase cost control. The intelligent ammeter in the remote single phase cost control comprises a microprocessor, an electric energy meter measurement unit, a voltage sampling unit, an electric current sampling unit and a power circuit. The voltage sampling unit and a signal output end of the electric current sampling unit are connected with a signal input end of the electric energy meter measurement unit. A data output end of the electric energy meter measurement unit is connected with a data input end of the microprocessor. An 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. A control input end of the microprocessor is connected with a button. The microprocessor is further connected with a clock circuit, a memorizer, an infrared communication circuit and a serial communication. A power input end of the power circuit is connected with a storage battery. A power input end of the electric energy meter measurement unit, a power input end of the microprocessor and a power input end of the serial communication circuit are respectively connected with a power output end of the power circuit. The intelligent ammeter in the remote single phase cost control is provided with an independent infrared communication interface and a RS 485 communication interface and supports a remote cost control function.
Description
Technical field
The technical program belongs to electric power metering device, specifically a kind of remote single-phase charge control intelligent electric energy meter.
Background technology
In prior art, due to the limitation of use occasion, such as city, rural area or factory and enterprise etc., meter reading personnel's workload is very large, 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 higher requirement.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the technical program proposes a kind of new remote single-phase charge control intelligent electric energy meter, and is specific as follows:
A kind of remote single-phase charge control intelligent electric energy meter comprises microprocessor, electric energy meter metering units, voltage sample unit, current sampling unit and power circuit; Be connected signal output part and connect the signal input part of electric energy meter metering units in described voltage sample unit with current sampling unit; The data output end of electric energy meter metering units connects the data input pin of microprocessor;
The output terminal of described microprocessor is connected with LCD display module, Control output interface, second signal output interface, electrical energy pulse output interface; The microprocessor-based control input end is connected with button; Microprocessor also is connected with clock circuit, storer, infrared communication circuit and serial communication circuit;
The power input of described power circuit is connected with accumulator, and the power output end of power circuit connects respectively the power input of electric energy meter metering units, the power input of microprocessor and the power input of serial communication circuit.
Described electric energy meter metering units is electric energy meter computation chip ADE7755.
Described voltage sample unit is resistor voltage divider network.
Described 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 after sampling with high precision, convert the pulse duration frequency signal that is directly proportional to active power to and give microprocessor, it is cumulative that microprocessor carries out timesharing with pulse signal according to the period rate, obtain total electric weight and each rate electric weight, result is saved in data memory.Microprocessor is completed the function that shows and carry out message exchange with outside (infrared, 485 communications, electrical energy pulse output, second signal output, Control and key-press input) simultaneously, and its theory diagram as shown in Figure 1.
The technical program has independently infrared and RS485 communication interface circuit, supports the remote bill control function; The 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 the technical program.
Embodiment
The technical program is further illustrated as follows below in conjunction with accompanying drawing and embodiment:
With reference to figure 1, a kind of remote single-phase charge control intelligent electric energy meter comprises microprocessor, electric energy meter metering units, voltage sample unit, current sampling unit and power circuit; Be connected signal output part and connect the signal input part of electric energy meter metering units in described voltage sample unit with current sampling unit; The data output end of electric energy meter metering units connects the data input pin of microprocessor; The output terminal of described microprocessor is connected with LCD display module, Control output interface, second signal output interface, electrical energy pulse output interface; The microprocessor-based control input end is connected with button; Microprocessor also is connected with clock circuit, storer, infrared communication circuit and serial communication circuit; The power input of described power circuit is connected with accumulator, and the power output end of power circuit connects respectively the power input of electric energy meter metering units, the power input of microprocessor and the power input of serial communication circuit.
In this example, described electric energy meter metering units is electric energy meter computation chip ADE7755.Described voltage sample unit is resistor voltage divider network.Described current sampling unit adopts copper-manganese resistance as sampling resistor.
This electric energy meter can satisfy by existing ripe circuit module circuit and microprocessor-based control/calculation function function and the performance requirement that has remote electric energy meter now.By the programming to microprocessor, the major function of the electric energy meter that this is routine is as follows:
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 accordingly.
B) have the time-sharing measurement function, active energy by the corresponding period add up respectively, store total, point, peak, put down, the paddy electric flux.
C) can store total electric energy and each rate electric flux of 12 months; Data storage boundary be the 24 o'clock the end of month constantly, or in integral point moment in No. 1 to No. 28 per month.
2, take the control function
Remote mode is realized by RS485 virtual medium and long-range electricity-selling system.
2.1, remote charge control electric energy meter
The electricity charge are calculated and to be completed in long-range electricity-selling system, do not store in 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 the instruction of ESAM data reading system, need by strict password authentification and safety certification.
Can arrange the power consumption parameter in electric energy meter by virtual medium;
2.2, safety certification encrypts requirement
By 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 by safety certifications such as strict password authentification or ESAM modules, reliable to guarantee data transmission security.The cryptographic algorithm 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 event 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
Total degree when c) recording the school (when not comprising the broadcasting school), the moment during nearest 10 schools, operator's code.
D) record the total degree of power down, the moment that nearest 10 power down occur and finish.
E) record nearest 10 Long-distance Control and operate a switch and nearest 10 Long-distance Control combined floodgate events, record draws, the data such as the moment and electric flux occur the combined floodgate event.
F) record game clock lid total degree, generation, the finish time of nearest 10 game clock lid event.
4, rate, period and electricity price scheme
Have two cover tariff period tables, can automatically change in the moment of agreement; Every cover rate is supported 4 rates at least.
Have calendar, clock, should can arrange at least 2 time zones the whole year, can programme arbitrarily 8 periods at least in 24h; The minimum interval of period is 15min; Period can cross over reset.
Have two cover electricity price schemes, automatically change in the time of can or reaching the power consumption level of agreement in moment of agreement.
Support by 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 last month monthly totally power consumption;
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) LCD wake-up mode 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 by button when d) having a power failure; After waking up as without operation, LCD answers autoshutdown after automatically showing a circulation; The button display operation finishes autoshutdown demonstration after 30 seconds.
E) pilot lamp :-pulse pilot lamp: redness, go out at ordinary times, glimmer during the metering active energy;
-alarm lamp: redness, go out when normal, report to the police often bright.
-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 and interval according to agreement; Each amount of freezing is preserved 12 times at least.
Instantaneous freezing: under abnormal condition, freeze the data of current calendar, time, all electric fluxs and important measuring amount; The instantaneous amount of freezing should be preserved the data of last 3 times.
Agreement is freezed: think in the old and new two cover rates/periods conversion, step price conversion 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 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.
During the acceptable broadcasting of electric energy meter school, scope must not be greater than 5min; Key and signal code cooperation need not to programme during the broadcasting school; When allow the school every day, number of times can arrange (default to when only allowing the school every day once) as requested, and should avoid electric energy meter carry out freeze or settlement data unloading operation before and after carry out in 5min.
Claims (4)
1. remote single-phase charge control intelligent electric energy meter is characterized in that comprising microprocessor, electric energy meter metering units, voltage sample unit, current sampling unit and power circuit; Be connected signal output part and connect the signal input part of electric energy meter metering units in described voltage sample unit with current sampling unit; The data output end of electric energy meter metering units connects the data input pin of microprocessor;
The output terminal of described microprocessor is connected with LCD display module, Control output interface, second signal output interface, electrical energy pulse output interface; The microprocessor-based control input end is connected with button; Microprocessor also is connected with clock circuit, storer, infrared communication circuit and serial communication circuit;
The power input of described power circuit is connected with accumulator, and the power output end of power circuit connects respectively the power input of electric energy meter metering units, the power input of microprocessor and the power input of serial communication circuit.
2. remote single-phase charge control intelligent electric energy meter according to claim 1, is characterized in that described electric energy meter metering units is electric energy meter computation chip ADE7755.
3. remote single-phase charge control intelligent electric energy meter according to claim 1 is characterized in that described voltage sample unit is resistor voltage divider network.
4. remote single-phase charge control intelligent electric energy meter according to claim 1, is characterized in that described current sampling unit adopts copper-manganese resistance as sampling resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110399711 CN103149400A (en) | 2011-12-06 | 2011-12-06 | Intelligent ammeter in remote single phase cost control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110399711 CN103149400A (en) | 2011-12-06 | 2011-12-06 | Intelligent ammeter in remote single phase cost control |
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| CN103149400A true CN103149400A (en) | 2013-06-12 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147294A (en) * | 2018-08-09 | 2019-01-04 | 北京市腾河智慧能源科技有限公司 | The method of the overproof lower copy reading data of clock of power meter is solved in communication module |
| CN109470899A (en) * | 2018-10-08 | 2019-03-15 | 国网辽宁省电力有限公司抚顺供电公司 | Handheld battery detection terminal |
| CN109784900A (en) * | 2018-12-28 | 2019-05-21 | 金卡智能集团股份有限公司 | A kind of charging method at times based on calendar watch |
| CN118962231A (en) * | 2024-10-17 | 2024-11-15 | 江苏征途技术股份有限公司 | A high-precision remote control branch measurement system and method for power parameter measurement |
-
2011
- 2011-12-06 CN CN 201110399711 patent/CN103149400A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147294A (en) * | 2018-08-09 | 2019-01-04 | 北京市腾河智慧能源科技有限公司 | The method of the overproof lower copy reading data of clock of power meter is solved in communication module |
| CN109470899A (en) * | 2018-10-08 | 2019-03-15 | 国网辽宁省电力有限公司抚顺供电公司 | Handheld battery detection terminal |
| CN109784900A (en) * | 2018-12-28 | 2019-05-21 | 金卡智能集团股份有限公司 | A kind of charging method at times based on calendar watch |
| CN118962231A (en) * | 2024-10-17 | 2024-11-15 | 江苏征途技术股份有限公司 | A high-precision remote control branch measurement system and method for power parameter measurement |
| CN118962231B (en) * | 2024-10-17 | 2025-01-21 | 江苏征途电气科技有限公司 | A high-precision remote control branch measurement system and method for power parameter measurement |
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Application publication date: 20130612 |