CN202120360U - 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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- CN202120360U CN202120360U CN2011202018872U CN201120201887U CN202120360U CN 202120360 U CN202120360 U CN 202120360U CN 2011202018872 U CN2011202018872 U CN 2011202018872U CN 201120201887 U CN201120201887 U CN 201120201887U CN 202120360 U CN202120360 U CN 202120360U
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Abstract
A single-phase local cost control intelligent electric energy meter comprises a current sampling circuit and a voltage sampling circuit. Current signals and voltage signals are input in a metering chip, and a sampling module, a hardware multiplying unit and a pulse output module are arranged in the metering chip. Voltage value, current value and reverse electric quantity obtained by the metering chip are input to a microcontrol unit capable of converting pulse output by the metering chip into the electric energy through a serial peripheral interface (SPI). The input end of the microcontrol 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 tripping blackout unit. The output end of the IC card unit is connected with the input end of the microcontrol unit, and the input end of the tripping blackout unit is connected with the output end of the microcontrol unit. The electric energy meter further comprises a main power supply, an auxiliary power supply and a clock circuit. The electric energy meter has the advantage of being capable of adapting to standards of intelligent electric energy meter series of the state grid corporation of China, high in safety and low in cost.
Description
Technical field
The utility model 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 appears 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.
The utility model content
For adapting to the intelligent electric energy meter series standard of State Grid Corporation of China, it is a kind of safe that the utility model provides, and the control intelligent electric energy meter is taken in single-phase this locality with low cost.
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 that the AD sampling obtains the sampling module of current value and magnitude of voltage and magnitude of voltage and current value multiplied each other obtaining the hardware multiplier of performance number, and the pulse output module that performance number is exported with the form 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 through 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 for micro-control unit the clock circuit of clock signal is provided.
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, the LED indicating member with warning message of operating a switch;
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.
The technical conceive of the utility model is: utilize current sampling circuit to gather current signal, utilize voltage sampling circuit to gather voltage signal, through the calculating of 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, reverse electric weight, power, etc. signal be transferred on the MCU through 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, the waveform of voltage and electric current is opposite, and the forward electric weight can measure with reverse electric quantity metering chip voluntarily.MCU will need data presented to show through display module; Through 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 carried out modernized requirement of scientific management thereby complied with power department.
The utlity model 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 the theory diagram of the utility model.
Embodiment
With reference to accompanying drawing, further specify the utility model:
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 that the AD sampling obtains the sampling module of current value and magnitude of voltage and magnitude of voltage and current value multiplied each other obtaining the hardware multiplier of performance number, and the pulse output module that performance number is exported with the form 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 through 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 for micro-control unit 4 clock circuit 7 of clock signal is provided.
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 LED indicating member 12 with 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.
The technical conceive of the utility model is: utilize current sampling circuit to gather current signal, utilize voltage sampling circuit to gather voltage signal, through the calculating of 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, reverse electric weight, power, etc. signal be transferred on the MCU through 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, the waveform of voltage and electric current is opposite, and the forward electric weight can measure with reverse electric quantity metering chip voluntarily.MCU will need data presented to show through display module; Through 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 carried out modernized requirement of scientific management thereby complied with power department.
The utlity model 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 utility model design; The protection domain of the utility model should not be regarded as and only limit to the concrete form that embodiment states, the protection domain of the utility model also reach in those skilled in the art according to the utility model design 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 through 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 for micro-control unit the clock circuit of clock signal is provided.
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, the LED indicating member with warning message of operating a switch;
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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CN2011202018872U CN202120360U (en) | 2011-06-15 | 2011-06-15 | Single-phase local cost control intelligent electric energy meter |
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CN2011202018872U CN202120360U (en) | 2011-06-15 | 2011-06-15 | Single-phase local cost control intelligent electric energy meter |
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CN2011202018872U Expired - Lifetime CN202120360U (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 |
---|---|---|---|---|
CN110412346A (en) * | 2019-07-01 | 2019-11-05 | 许昌许继低压电器有限公司 | A kind of metering type intelligent breaker based on Internet of Things |
-
2011
- 2011-06-15 CN CN2011202018872U patent/CN202120360U/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110412346A (en) * | 2019-07-01 | 2019-11-05 | 许昌许继低压电器有限公司 | A kind of metering type intelligent breaker based on Internet of Things |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee | ||
CP02 | Change in the address of a patent holder |
Address after: 310030 No. 9 Longtan Road, front street, Yuhang District, Zhejiang, Hangzhou Patentee after: Hangzhou Sunrise Technology Co., Ltd. Address before: Hangzhou City, Zhejiang province 310030 West Lake science and Technology Park West eight road No. 2 Yinjiang Software Park building C Patentee before: Hangzhou Sunrise Technology Co., Ltd. |
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CX01 | Expiry of patent term |
Granted publication date: 20120118 |
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CX01 | Expiry of patent term |