CN102262800A - Single-phase long-distance cost-control intelligent electric energy meter - Google Patents
Single-phase long-distance cost-control intelligent electric energy meter Download PDFInfo
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- CN102262800A CN102262800A CN 201110161092 CN201110161092A CN102262800A CN 102262800 A CN102262800 A CN 102262800A CN 201110161092 CN201110161092 CN 201110161092 CN 201110161092 A CN201110161092 A CN 201110161092A CN 102262800 A CN102262800 A CN 102262800A
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Abstract
The invention provides a single-phase long-distance cost-control intelligent electric energy meter. The intelligent electric energy meter provided by the invention comprises a current sampling circuit and a voltage sampling circuit; current signals and voltage signals are input into a metering chip and the metering chip is provided with a sampling module, a hardware multiplying unit and a pulse output module; voltage values, current values and reverse electric quantity which are obtained by the metering chip are input into a micro-control unit through an SPI (Single Program Initiation) interface; an input end of the micro-control unit is respectively connected with a communication module, a display module, a storing module and a control module; the control module comprises a tripping power-down unit and an embedded safety control module; an input end of the tripping power-down unit is connected with an output end of the micro-control unit; and the electric energy meter also comprises a power supply module and a clock circuit for supplying clock signals to the micro-control unit. The intelligent electric energy meter provided by the invention can be suitable for serial standards of the intelligent electric energy meter of State Grid Corporation of China and has a high safety and a low cost.
Description
Technical field
The present invention relates to a kind of single-phase long-range 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, the with low cost single-phase long-range control intelligent electric energy meter that takes.
The single-phase long-range control intelligent electric energy meter that takes, 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 when the user tripping operation outage unit that electricity charge time tripping operation less than drawing lock threshold value, the electricity charge that prestore close a floodgate during greater than drawing lock threshold value that prestores, with the embedded-type security control module (ESAM, Embedded Secure Access Module) that information security is encrypted; 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 comprises power module and the clock circuit of 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.
Further, described power module is included as the primary power of computation chip and micro-control unit power supply and is the auxiliary power of 485 communication units power supply.
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.
This circuit board adopted ultra-large digital signal processing chip, forever preserve the memory of information, full isolation standard RS485 communication interface, infrared communication and communicate by letter, the big wide temperature liquid crystal display of picture and information security encrypt 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 single-phase long-range control intelligent electric energy meter that takes, 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 when the user tripping operation outage unit 11 that electricity charge time tripping operation less than drawing lock threshold value, the electricity charge that prestore close a floodgate during greater than drawing lock threshold value that prestores, with the embedded-type security control module (ESAM, Embedded Secure Access Module) that information security is encrypted; 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 comprises power module and the clock circuit 7 of 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.
Described power module is included as the primary power 5 of computation chip and micro-control unit power supply and is the auxiliary power 6 of 485 communication units, 8 power supplies.
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.
This circuit board adopted ultra-large digital signal processing chip, forever preserve the memory of information, full isolation standard RS485 communication interface, infrared communication and communicate by letter, the big wide temperature liquid crystal display of picture and information security encrypt 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 (3)
1. the single-phase long-range control intelligent electric energy meter that takes, 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 prestore tripping operation outage unit that electricity charge time tripping operation less than drawing lock threshold value, the electricity charge that prestore close a floodgate during greater than drawing lock threshold value and the embedded-type security control module that information security is encrypted as the user; 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 comprises power module and the clock circuit of clock signal is provided for micro-control unit.
2. the single-phase long-range control intelligent electric energy meter that takes as claimed in claim 1, 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.
3. the single-phase long-range control intelligent electric energy meter that takes as claimed in claim 2 is characterized in that: described power module is included as the primary power of computation chip and micro-control unit power supply and is the auxiliary power of 485 communication units power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110161092 CN102262800A (en) | 2011-06-15 | 2011-06-15 | Single-phase long-distance cost-control intelligent electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110161092 CN102262800A (en) | 2011-06-15 | 2011-06-15 | Single-phase long-distance cost-control intelligent electric energy meter |
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| CN102262800A true CN102262800A (en) | 2011-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112698088A (en) * | 2020-12-08 | 2021-04-23 | 深圳供电局有限公司 | Electric quantity metering equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201336059Y (en) * | 2008-12-31 | 2009-10-28 | 骆勇强 | Multifunctional prepaid electric energy meter |
| CN101819222A (en) * | 2010-03-25 | 2010-09-01 | 杭州炬华科技有限公司 | Intelligent electric energy meter with acquisition function |
| CN201569701U (en) * | 2009-12-29 | 2010-09-01 | 中国电力科学研究院 | Single phase remote charge intelligent ammeter |
| CN201697967U (en) * | 2010-04-29 | 2011-01-05 | 上海科泰信息技术有限公司 | Intelligent-power-grid-oriented multifunctional electricity meter |
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2011
- 2011-06-15 CN CN 201110161092 patent/CN102262800A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201336059Y (en) * | 2008-12-31 | 2009-10-28 | 骆勇强 | Multifunctional prepaid electric energy meter |
| CN201569701U (en) * | 2009-12-29 | 2010-09-01 | 中国电力科学研究院 | Single phase remote charge intelligent ammeter |
| CN101819222A (en) * | 2010-03-25 | 2010-09-01 | 杭州炬华科技有限公司 | Intelligent electric energy meter with acquisition function |
| CN201697967U (en) * | 2010-04-29 | 2011-01-05 | 上海科泰信息技术有限公司 | Intelligent-power-grid-oriented multifunctional electricity meter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112698088A (en) * | 2020-12-08 | 2021-04-23 | 深圳供电局有限公司 | Electric quantity metering equipment |
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Application publication date: 20111130 |