CN103150828A - Local carrier single-phase fee-controlled intelligent electric energy meter - Google Patents
Local carrier single-phase fee-controlled intelligent electric energy meter Download PDFInfo
- Publication number
- CN103150828A CN103150828A CN 201110399008 CN201110399008A CN103150828A CN 103150828 A CN103150828 A CN 103150828A CN 201110399008 CN201110399008 CN 201110399008 CN 201110399008 A CN201110399008 A CN 201110399008A CN 103150828 A CN103150828 A CN 103150828A
- Authority
- CN
- China
- Prior art keywords
- electric energy
- energy meter
- microprocessor
- circuit
- controlled intelligent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a local carrier single-phase fee-controlled 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 supply 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 an LCD (Liquid Crystal Display) 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 keys; and the microprocessor is additionally connected with a clock circuit, a memory, an infrared communication circuit, an IC (Integrated Circuit) card interface circuit, a serial communication circuit and a carrier communication circuit. By adopting the technical scheme, the local carrier single-phase fee-controlled intelligent electric energy meter is provided with independent IC card, infrared, RS485 and carrier communication interfaces, and therefore the local and remote fee control function is supported.
Description
Technical field
The technical program belongs to electric power metering device, specifically a kind of local carrier single-phase charge-controlled intelligent electric 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 management.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 single phase local charge control intelligent electric energy meter, and is specific as follows:
A kind of local carrier single-phase charge-controlled intelligent electric 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, IC-card interface circuit, serial communication circuit and carrier 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.
The IC-card interface circuit is used for supporting the CPU card.In prior art, the CPU card is mainly finance level IC-card.The single-chip microcomputer that is equivalent to a specific type take CPU card (CPU card and SAM module are as encryption medium) as the master CPU card embedded chip, inner except with controller, storer, outside time sequence control logic etc., also with algorithm unit and operating system, memory capacity is large, and processing power is strong, the characteristics such as information storage security.
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.The function that microprocessor is completed simultaneously demonstration and carried out message exchange with outside (IC-card interface communication, infrared communication, 485 communications, carrier communication, electrical energy pulse output, second signal output, Control and key-press input).
The technical program has independently IC-card, infrared, RS485 communication interface circuit and carrier communication circuit, supports the local and remote control function of taking; 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 local carrier single-phase charge-controlled intelligent electric 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, IC-card interface 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.In this example, described IC-card interface circuit adopts SLE4442IC card module for reading and writing.Carrier communication circuit can be matched the carrier module of different manufacturers, and what select in this example is
KQ-100E type power line carrier, PLC module, this carrier communication module can directly and between microprocessor be passed through digital signal communication.
Function and performance requirement that this electric energy meter can satisfy local electric energy meter by existing ripe circuit module circuit and microprocessor-based control/calculation function.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
Local mode realizes by solid state mediums such as CPU card, radio-frequency cards.Remote mode is by carrier wave or RS485 virtual medium and the realization of long-range electricity-selling system.
2.1 local charge control electric energy meter
Carry out the electricity charge and calculate in real time in electric energy meter, its major function comprises:
A) when remaining sum is less than or equal to the warning amount of money of setting, electric energy meter can be with sound, light or other mode reminding users; The overdraw amount of money is answered real time record, and during lower than the overdraw thresholding amount of money set, electric energy meter sends power-off signal, the power supply of control overhead switch interrupts when the overdraw amount of money; After electric energy meter received effectively the continuous information of paying tariff, the deduction overdraw amount of money at first during greater than setting value (being defaulted as zero), can make electric energy meter be in the permission "on" position by long-range or local mode, by artificial local recovery power supply when remaining sum.
B) remaining sum can not surpass the maximum Stored Value amount of money of electric energy meter that design allows; The maximum Stored Value amount of money is determined by the electric energy meter figure place showing.
C) electric energy meter prestore the electricity charge amount of money should be able to table in remaining sum carry out accurate superposition, and the information such as remaining sum, electric energy meter parameter can be returned and be written to solid state medium.
D) electric energy meter is not accepted any information of non-designated medium input.When using non-designated medium or carrying out illegal operation, electric energy meter can effectively protect; After non-designated medium or illegal operation were cancelled, electric energy meter can work and data are not lost.
G) by solid state medium to electric energy meter carry out the parameter setting, the electricity charge that prestore, information are returned and are write, ESAM data reading system and when issuing the remote control command operation, need by strict password authentification and safety certification, other power consumption parameter settings except user's power purchase information also should be in electric energy meter to programme under enable state and can carry out by programming key and the password authentification of programming.
2.2 safety certification is encrypted 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 logouts
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) the current residual amount of money;
3) current step price;
4) each rate accumulative total electric flux indicating value and total accumulative total electric flux indicating value;
5) current time;
6) alarm code or prompting;
7) plug-in card and communications status prompting;
8) 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 remaining sum unit of display is unit, and figure place showing is 8, contains 2 decimals.
D) 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 e) 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.
F) 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. local carrier single-phase charge-controlled intelligent electric 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, IC-card interface circuit, serial communication circuit and carrier 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. local carrier single-phase charge-controlled intelligent electric meter according to claim 1, is characterized in that described electric energy meter metering units is electric energy meter computation chip ADE7755.
3. local carrier single-phase charge-controlled intelligent electric meter according to claim 1 is characterized in that described voltage sample unit is resistor voltage divider network.
4. local carrier single-phase charge-controlled intelligent electric 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 201110399008 CN103150828A (en) | 2011-12-06 | 2011-12-06 | Local carrier single-phase fee-controlled intelligent electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110399008 CN103150828A (en) | 2011-12-06 | 2011-12-06 | Local carrier single-phase fee-controlled intelligent electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103150828A true CN103150828A (en) | 2013-06-12 |
Family
ID=48548873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110399008 Pending CN103150828A (en) | 2011-12-06 | 2011-12-06 | Local carrier single-phase fee-controlled intelligent electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103150828A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104217498A (en) * | 2014-08-21 | 2014-12-17 | 国家电网公司 | Prepayment electric energy meter capable of monitoring and controlling electricity consumption |
| CN104808053A (en) * | 2015-05-18 | 2015-07-29 | 张新安 | Electronic watt hour meter |
| CN105184981A (en) * | 2015-10-19 | 2015-12-23 | 国家电网公司 | Intelligent charge control multifunctional power meter |
| CN105243746A (en) * | 2015-10-21 | 2016-01-13 | 宁波三星医疗电气股份有限公司 | Switching method for charge control modes of single-phase intelligent electric energy meter |
-
2011
- 2011-12-06 CN CN 201110399008 patent/CN103150828A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104217498A (en) * | 2014-08-21 | 2014-12-17 | 国家电网公司 | Prepayment electric energy meter capable of monitoring and controlling electricity consumption |
| CN104808053A (en) * | 2015-05-18 | 2015-07-29 | 张新安 | Electronic watt hour meter |
| CN105184981A (en) * | 2015-10-19 | 2015-12-23 | 国家电网公司 | Intelligent charge control multifunctional power meter |
| CN105243746A (en) * | 2015-10-21 | 2016-01-13 | 宁波三星医疗电气股份有限公司 | Switching method for charge control modes of single-phase intelligent electric energy meter |
| CN105243746B (en) * | 2015-10-21 | 2018-03-20 | 宁波三星医疗电气股份有限公司 | A kind of single-phase intelligent electric energy meter takes control mode switching method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201974474U (en) | State grid three-phase intelligent electric energy meter | |
| CN202693653U (en) | Single-phase fee control intelligent electric energy meter | |
| Anderson et al. | On the Security Economics of Electricity Metering. | |
| CN201796423U (en) | Single-phase remote cost-control smart electricity meter | |
| CN201796424U (en) | Single-phase local charge control smart meter | |
| CN201576033U (en) | Three-phase charge control intelligent electric energy meter | |
| CN203444560U (en) | Single-phase fee-control intelligent ammeter | |
| CN202285025U (en) | One-phase fee-control smart electricity meter | |
| CN201796087U (en) | State grid three-phase remote bill control intelligent electric energy meter | |
| CN201796429U (en) | IC card prepayment water meter control circuit | |
| CN201886042U (en) | Smart electricity meter for state grid single-phase carrier long-distance prepayment | |
| CN102779364B (en) | A kind of central air conditioner timer and charge system | |
| CN102324144A (en) | Intelligent waterproof water meter with radio frequency (RF) card | |
| CN103150828A (en) | Local carrier single-phase fee-controlled intelligent electric energy meter | |
| Kate et al. | ZIGBEE based monitoring theft detection and automatic electricity meter reading | |
| CN201903569U (en) | Single-phase remote charge-controlled intelligent electric energy meter | |
| CN203101508U (en) | Single-phase remote cost control electric energy meter | |
| CN103150827A (en) | Local single-phase fee-controlled intelligent electric energy meter | |
| CN202372571U (en) | Remote carrier wave single-phase cost control intelligent electric energy meter | |
| CN202339600U (en) | Local-carrier single-phase cost-control intelligent watt-hour meter | |
| CN202339602U (en) | Local single-phase cost control smart electric energy meter | |
| CN202142131U (en) | Radio frequency card intelligent waterproof water meter | |
| Milam et al. | Smart meter deployment: US initiatives | |
| ES2247691T3 (en) | MEASURING SYSTEM. | |
| CN206505493U (en) | A kind of electric energy meter with GPRS functions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130612 |