CN102243271A - Single-phase local cost control intelligent electric energy meter - Google Patents
Single-phase local cost control intelligent electric energy meter Download PDFInfo
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- CN102243271A CN102243271A CN2011101610909A CN201110161090A CN102243271A CN 102243271 A CN102243271 A CN 102243271A CN 2011101610909 A CN2011101610909 A CN 2011101610909A CN 201110161090 A CN201110161090 A CN 201110161090A CN 102243271 A CN102243271 A CN 102243271A
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Abstract
The invention discloses a single-phase local cost control intelligent electric energy meter, which comprises a current sampling circuit and a voltage sampling circuit, wherein a current signal and a voltage signal are input into a metering chip; a sampling module, a hardware multiplier and a pulse output module are arranged in the metering chip; a voltage value, a current value and inverse electric quantity, which are acquired by the metering chip, are input into a micro control unit capable of converting a pulse output by the metering chip to electric quantity through a serial peripheral interface (SPI); an input end of the micro control unit is connected with a communication module, a display module, a storage module and a control module respectively; the control module comprises an integrated circuit (IC) card unit and a trip power-off unit; an output end of the IC card unit is connected with the input end of the micro control unit; the input end of the trip power-off unit is connected with the output end of the micro control unit; and the electric energy meter also comprises a main power supply, a secondary power supply and a clock circuit. The single-phase local cost control intelligent electric energy meter has the advantages that: series standards of intelligent electric energy meters of the state grid corporation of China can be met; safety is high; and cost is low.
Description
Technical field
The present invention relates to a kind of single-phase local expense control intelligent electric energy meter.
Technical background
In recent years, the construction of " strong intelligent grid " was actively carried out by State Grid Corporation of China, and intelligent electric meter is as the nucleus equipment of intelligent grid, and the growth that will dispose along with intelligent grid presents and increases the impetus rapidly.
09 year, State Grid Corporation of China is on the basis of " measure, check meter and expenses standard construction research " project achievement, general requirement according to unified strong intelligent grid construction, produce, manage, manage the basic demand to electric energy meter in conjunction with domestic and international metering, communication technology present situation and system of company, State Grid Corporation of China's tissue has been worked out the intelligent electric energy meter series standard.
Summary of the invention
For adapting to the intelligent electric energy meter series standard of State Grid Corporation of China, the invention provides a kind of safe, with low cost single-phase this locality and take the control intelligent electric energy meter.
The control intelligent electric energy meter is taken in single-phase this locality, comprise the current sampling circuit of gathering current signal and the voltage sampling circuit of gathering voltage signal, described current signal and voltage signal input computation chip, be provided with in the described computation chip current signal and voltage signal are carried out the sampling module that the AD sampling obtains current value and magnitude of voltage, with being multiplied each other, magnitude of voltage and current value obtain the hardware multiplier of performance number, and with the pulse output module of performance number with the form output of pulse;
The magnitude of voltage that described computation chip obtains, current value and reverse electric weight can be the micro-control unit (MCU of electric weight with the pulses switch of computation chip output by the input of SPI interface, Micro Control Unit) in, the input end of described micro-control unit is connected with communication module, display module, memory module and control module respectively;
Described control module comprises the IC-card unit that can utilize IC-card and IC-card telecommunication circuit that the data in the micro-control unit are provided with and change, the tripping operation outage unit that closes a floodgate when the time tripping operation less than drawing lock threshold value, the electricity charge that prestore are greater than drawing lock threshold value with the electricity charge that prestore as the user, and the embedded-type security control module (ESAM, Embedded Secure Access Module) that information security is encrypted; The output terminal of described IC-card unit is connected with the input end of described micro-control unit, and the input end of described tripping operation outage unit is connected with the output terminal of described micro-control unit;
Described electric energy meter also is included as the primary power of computation chip and micro-control unit power supply, is the auxiliary power of IC-card unit power supply, and the clock circuit that clock signal is provided for micro-control unit.
Further, described communication module comprises infrared communication unit and 485 communication units; Described display module comprises the LCD display unit that shows various electric weight, voltage, electric current, time, address and table number and shows meritorious pulse, operates a switch and the LED indicating member of warning message;
Described memory module comprises the EEPROM storage unit; The input end of all unit is connected with the output terminal of micro-control unit respectively;
Described auxiliary power is connected with described 485 communication units.
Technical conceive of the present invention is: utilize current sampling circuit to gather current signal, utilize voltage sampling circuit to gather voltage signal, calculating through 8209 computation chips, computation chip carries out the AD sampling to signal, obtain magnitude of voltage and current value, pass through the hardware multiplier in the computation chip simultaneously, voltage and current is multiplied each other obtains power, and with the form of pulse power is exported, the speed of pulse has been represented the size of power; Computing chip with relevant voltage, electric current, oppositely electric weight, power, etc. signal be transferred on the MCU by the SPI line, handle; Under the forward electric weight situation, the waveform of voltage should be identical with the waveform of electric current, and under the reverse electric weight situation, voltage is opposite with the waveform of electric current, and forward electric weight and reverse electric quantity metering chip can measure voluntarily.MCU will need data presented to show by display module; By infrared communication unit or 485 communication units electric energy meter is communicated simultaneously; Drawing lock module then can be controlled user's electricity consumption.The IC-card module then can utilize IC-card and IC-card telecommunication circuit that the data in the MCU are provided with and change.
This circuit board adopted ultra-large digital signal processing chip, forever preserve the memory of information, full isolation standard RS485 communication interface and infrared communication, the big wide temperature liquid crystal display of picture and information security encrypts advanced technologies such as ESAM module.This circuit board integrates numerous functions, have functions such as electrical energy metering, information stores and processing, monitoring in real time, control automatically, information interaction, can stop the arrearage behavior effectively, effectively in time the user be carried out modernized requirement of scientific management thereby complied with power department.
The present invention has the intelligent electric energy meter series standard that can adapt to State Grid Corporation of China, safe, with low cost advantage.
Description of drawings
Fig. 1 is a theory diagram of the present invention.
Embodiment
With reference to accompanying drawing, further specify the present invention:
The control intelligent electric energy meter is taken in single-phase this locality, comprise the current sampling circuit 1 of gathering current signal and the voltage sampling circuit 2 of gathering voltage signal, described current signal and voltage signal input computation chip 3, be provided with in the described computation chip 3 current signal and voltage signal are carried out the sampling module that the AD sampling obtains current value and magnitude of voltage, with being multiplied each other, magnitude of voltage and current value obtain the hardware multiplier of performance number, and with the pulse output module of performance number with the form output of pulse;
The magnitude of voltage that described computation chip 3 obtains, current value and reverse electric weight can be the micro-control unit (MCU of electric weight with the pulses switch of computation chip output by the input of SPI interface, Micro Control Unit) in 4, the input end of described micro-control unit 4 is connected with communication module, display module, memory module and control module respectively;
Described control module comprises the IC-card unit 16 that can utilize IC-card and IC-card telecommunication circuit that the data in the micro-control unit are provided with and change, the tripping operation outage unit 11 that closes a floodgate when the time tripping operation less than drawing lock threshold value, the electricity charge that prestore are greater than drawing lock threshold value with the electricity charge that prestore as the user, and the embedded-type security control module 10 (ESAM, Embedded Secure Access Module) that information security is encrypted; The output terminal of described IC-card unit 16 is connected with the input end of described micro-control unit 4, and the input end of described tripping operation outage unit 11 is connected with the output terminal of described micro-control unit 4;
Described electric energy meter also is included as the primary power 5 of computation chip 3 and micro-control unit 4 power supplies, is the auxiliary power 6 of IC-card unit 16 power supplies, and the clock circuit 7 that clock signal is provided for micro-control unit 4.
Described communication module comprises infrared communication unit 9 and 485 communication units 8; Described display module comprises the LCD display unit 13 that shows various electric weight, voltage, electric current, time, address and table number and shows meritorious pulse, operate a switch and the LED indicating member 12 of warning message, described memory module comprises EEPROM storage unit 14; The input end of all unit is connected with the output terminal of micro-control unit 4 respectively, and described auxiliary power 6 is connected with described 485 communication units 8.
Technical conceive of the present invention is: utilize current sampling circuit to gather current signal, utilize voltage sampling circuit to gather voltage signal, calculating through 8209 computation chips, computation chip carries out the AD sampling to signal, obtain magnitude of voltage and current value, pass through the hardware multiplier in the computation chip simultaneously, voltage and current is multiplied each other obtains power, and with the form of pulse power is exported, the speed of pulse has been represented the size of power; Computing chip with relevant voltage, electric current, oppositely electric weight, power, etc. signal be transferred on the MCU by the SPI line, handle; Under the forward electric weight situation, the waveform of voltage should be identical with the waveform of electric current, and under the reverse electric weight situation, voltage is opposite with the waveform of electric current, and forward electric weight and reverse electric quantity metering chip can measure voluntarily.MCU will need data presented to show by display module; By infrared communication unit or 485 communication units electric energy meter is communicated simultaneously; Drawing lock module then can be controlled user's electricity consumption.The IC-card module then can utilize IC-card and IC-card telecommunication circuit that the data in the MCU are provided with and change.
This circuit board adopted ultra-large digital signal processing chip, forever preserve the memory of information, full isolation standard RS485 communication interface and infrared communication, the big wide temperature liquid crystal display of picture and information security encrypts advanced technologies such as ESAM module.This circuit board integrates numerous functions, have functions such as electrical energy metering, information stores and processing, monitoring in real time, control automatically, information interaction, can stop the arrearage behavior effectively, effectively in time the user be carried out modernized requirement of scientific management thereby complied with power department.
The present invention has the intelligent electric energy meter series standard that can adapt to State Grid Corporation of China, safe, with low cost advantage.
The described content of this instructions embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.
Claims (2)
1. the control intelligent electric energy meter is taken in single-phase this locality, it is characterized in that: comprise the current sampling circuit of gathering current signal and the voltage sampling circuit of gathering voltage signal, described current signal and voltage signal input computation chip, be provided with in the described computation chip current signal and voltage signal are carried out the sampling module that the AD sampling obtains current value and magnitude of voltage, with being multiplied each other, magnitude of voltage and current value obtain the hardware multiplier of performance number, and with the pulse output module of performance number with the form output of pulse;
The magnitude of voltage that described computation chip obtains, current value and reverse electric weight can be in the micro-control unit of electric weight with the pulses switch of computation chip output by the input of SPI interface, and the input end of described micro-control unit is connected with communication module, display module, memory module and control module respectively;
Described control module comprises can utilize IC-card unit that IC-card and IC-card telecommunication circuit be provided with and change the data in the micro-control unit and when the user tripping operation outage unit that electricity charge tripping operation during less than drawing lock threshold value, the electricity charge that prestore close a floodgate during greater than drawing lock threshold value that prestores; The output terminal of described IC-card unit is connected with the input end of described micro-control unit, and the input end of described tripping operation outage unit is connected with the output terminal of described micro-control unit;
Described electric energy meter also is included as the primary power of computation chip and micro-control unit power supply, is the auxiliary power of IC-card unit power supply, and the clock circuit that clock signal is provided for micro-control unit.
2. the control intelligent electric energy meter is taken in single-phase this locality as claimed in claim 1, and it is characterized in that: described communication module comprises infrared communication unit and 485 communication units; Described display module comprises the LCD display unit that shows various electric weight, voltage, electric current, time, address and table number and shows meritorious pulse, operates a switch and the LED indicating member of warning message;
Described memory module comprises the EEPROM storage unit; The input end of all unit is connected with the output terminal of micro-control unit respectively;
Described auxiliary power is connected with described 485 communication units.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101610909A CN102243271A (en) | 2011-06-15 | 2011-06-15 | Single-phase local cost control intelligent electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101610909A CN102243271A (en) | 2011-06-15 | 2011-06-15 | Single-phase local cost control intelligent electric energy meter |
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| CN102243271A true CN102243271A (en) | 2011-11-16 |
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| CN2011101610909A Pending CN102243271A (en) | 2011-06-15 | 2011-06-15 | Single-phase local cost control intelligent electric energy meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977458A (en) * | 2015-07-06 | 2015-10-14 | 安徽南瑞中天电力电子有限公司 | Battery current detection method of electric energy meter FCT tool |
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| CN101339682A (en) * | 2008-07-29 | 2009-01-07 | 深圳市思达仪表有限公司 | CPU card three phase electronic type pre-payment step electricity price electrical energy meter |
| CN101393667A (en) * | 2008-10-20 | 2009-03-25 | 成都华立达电力信息***有限公司 | Pre-payment management device for intelligent IC card |
| CN201569701U (en) * | 2009-12-29 | 2010-09-01 | 中国电力科学研究院 | Single phase remote charge intelligent ammeter |
| CN102074075A (en) * | 2010-12-22 | 2011-05-25 | 哈尔滨电工仪表研究所 | Single-phase local prepayment intelligent electric energy meter |
| CN102074076A (en) * | 2011-01-19 | 2011-05-25 | 四川电力科学研究院 | Intelligent electric meter centralized recharging terminal and control method thereof |
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2011
- 2011-06-15 CN CN2011101610909A patent/CN102243271A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339682A (en) * | 2008-07-29 | 2009-01-07 | 深圳市思达仪表有限公司 | CPU card three phase electronic type pre-payment step electricity price electrical energy meter |
| CN101393667A (en) * | 2008-10-20 | 2009-03-25 | 成都华立达电力信息***有限公司 | Pre-payment management device for intelligent IC card |
| CN201569701U (en) * | 2009-12-29 | 2010-09-01 | 中国电力科学研究院 | Single phase remote charge intelligent ammeter |
| CN102074075A (en) * | 2010-12-22 | 2011-05-25 | 哈尔滨电工仪表研究所 | Single-phase local prepayment intelligent electric energy meter |
| CN102074076A (en) * | 2011-01-19 | 2011-05-25 | 四川电力科学研究院 | Intelligent electric meter centralized recharging terminal and control method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977458A (en) * | 2015-07-06 | 2015-10-14 | 安徽南瑞中天电力电子有限公司 | Battery current detection method of electric energy meter FCT tool |
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Application publication date: 20111116 |