CN104410164B - Ii type electric energy efficiency management terminal and system - Google Patents

Ii type electric energy efficiency management terminal and system Download PDF

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Publication number
CN104410164B
CN104410164B CN201410723739.5A CN201410723739A CN104410164B CN 104410164 B CN104410164 B CN 104410164B CN 201410723739 A CN201410723739 A CN 201410723739A CN 104410164 B CN104410164 B CN 104410164B
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China
Prior art keywords
energy efficiency
electric energy
circuit
type electric
efficiency management
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CN201410723739.5A
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Chinese (zh)
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CN104410164A (en
Inventor
吴明玉
梁伟培
柏玉峰
王勇
何宝文
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GUANGDONG ZHONGYU TECHNOLOGY Co Ltd
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GUANGDONG ZHONGYU TECHNOLOGY Co Ltd
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Priority to CN201420749022.3U priority Critical patent/CN204304613U/en
Priority to CN201410723739.5A priority patent/CN104410164B/en
Publication of CN104410164A publication Critical patent/CN104410164A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/7838
    • Y02E60/7853
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

Abstract

The present invention provides a kind of II type electric energy efficiency management terminal and system, the terminal includes terminal shell, the control unit in the terminal shell is arranged on, power module, memory cell, data acquisition module, communication module and the display module being connected with described control unit respectively;The data acquisition module includes direct current analog quantity acquisition unit, and the direct current analog quantity acquisition unit includes the DC analogue quantity sample circuit of two-way independence, and DC analogue quantity isolation circuit;The AC sampling unit includes three-phase alternating voltage measuring circuit and three-phase alternating current flow measurement circuitry.The II type electric energy efficiency management terminal has direct current analog quantity acquisition unit and AC sampling unit, non-electric quantity (such as flow, pressure, temperature, humidity) information (i.e. the DC analogue quantity data) that sensor detection is obtained can be acquired, and Current Voltage and power these electrical quantity are measured and data acquisition, so as to realize the detection and management to electric power environmental.

Description

II type electric energy efficiency management terminal and system
Technical field
The present invention relates to electric power monitoring technical field, more particularly to a kind of II type electric energy efficiency management terminal and system.
Background technology
With national energy-saving emission reduction, the development that deepens continuously of DSM work, build based on intelligent grid Electric energy service management platform and power consumer energy efficiency monitoring system, it has also become China's energy-saving and emission-reduction and DSM work The important technology support of development.It is specification electric energy service management platform and power consumer energy efficiency monitoring system Construction, according to unification Design, scientific and normal construction principle, it is necessary to unified standard is carried out to electric energy efficiency monitoring terminal, therefore has formulated electric energy efficiency Detection terminal standard design specification.
In existing energy efficiency management system, major part still continues to use the electrical management terminal in major old plants, for example The centralized automatic meter-reading terminal of state's net, specially becomes management terminal etc., and this Terminal Type belongs to universal management terminal in power system, its Function can only under certain condition meet the partial function of energy efficiency management system, and in a certain area or some special environment Under, electric power terminal seems clumsy and unitary function.Specific energy efficiency management terminal, ability are used only under different application environment Application by energy efficiency management system to electric power environmental performs to ultimate attainment.
The content of the invention
It is asking of solving that above-mentioned existing electrical management termination function is single and can not use under some particular surroundings based on this Topic, the present invention provides a kind of specific II type electric energy efficiency management terminal and system, can be used under different application environment, can be by Application of the energy efficiency management system to electric power environmental performs to ultimate attainment.
Its technical scheme is as follows:
A kind of II type electric energy efficiency management terminal, including terminal shell, are arranged on the control unit in the terminal shell, Power module, memory cell, data acquisition module, communication module and the display module being connected with described control unit respectively; The data acquisition module includes direct current analog quantity acquisition unit, and the direct current analog quantity acquisition unit includes the straight of two-way independence Flow field simulation amount sample circuit, and DC analogue quantity isolation circuit;The DC analogue quantity sample circuit front end includes and electric current The TVS pipe and Zener of signal connection, and the DC current sampling resistor after the TVS pipe and Zener is connected to, with institute State the binary channels sampled measurements chip of DC current sampling resistor connection;The AC sampling unit is surveyed including three-phase alternating voltage Amount circuit and three-phase alternating current flow measurement circuitry;The three-phase alternating voltage measuring circuit includes current type voltage transformer, with The alternating voltage sampling resistor of the voltage transformer connection, and the three-phase alternating current being connected with the alternating voltage sampling resistor Measurement chip;The three-phase alternating current flow measurement circuitry includes current transformer, the alternating current being connected with the current transformer Sampling resistor is flowed, and the alternating current sampling resistor is connected with three-phase alternating current measurement chip.
, it is necessary to passing through a certain kind is responsible for acquisition process analysis electrical quantity and non-electric quantity specially (such as in energy efficiency management system Flow, pressure, temperature, humidity etc.) integrated apparatus of information are detected and are managed to electric power environmental, this special purpose device Live electric power environmental information can be collected and process, must be concentrated with electric energy efficiency information again carries out data friendship with interactive terminal Change, under such demand and applied environment, II type electric energy efficiency management terminal is arisen at the historic moment.II type electric energy efficiency management is eventually End have direct current analog quantity acquisition unit and AC sampling unit, can to sensor detection obtain non-electric quantity (such as flow, pressure Power, temperature, humidity etc.) information (i.e. DC analogue quantity data) is acquired, and to Current Voltage and power these electrical quantity Measure and data acquisition, so as to realize the detection and management to electric power environmental.
Technical scheme is further described below:
Further, the power module include with three tunnels output linear transformer, and with the linear transformation Communication power supply circuit, data acquisition power circuit, the control unit power circuit of device correspondence connection;And, the linear transformation Device front end is connected with power protecting circuit.Wherein, three power circuits are respectively used to communication module, data acquisition module Block, control unit are powered, and power protecting circuit can guarantee that circuit is not damaged under overpressure situation and can recovered.
Further, the communication module includes infrared communication unit, ethernet communication unit, and RS485 communication units Unit;Wherein, the RS485 communication units include two-way RS485 communication interfaces, wherein being all the way the RS485-1 for mouth of checking meter Communication interface;Another road be for check meter mouth and routinely detection safeguard the RS485-2 communication interfaces of mouth.
Further, also the remote signalling including being connected with described control unit conjugates observation circuit, the remote signalling displacement monitoring Circuit includes the remote signalling input interface that the active common cathode of remote signalling protection circuit, remote signalling isolation circuit, and two-way is accessed.
Further, also including remote control output circuit, the remote control output circuit includes relay, and is arranged on described The remote control drive circuit of relay front end.Remote control output uses the normally closed way of output of relay normally open, except using low-power consumption Outside Panasonic's relay, in order to increase the stability and reliability of control signal, also one drive circuit is added in relay front end.
Further, also including the real-time clock being connected with described control unit, the real-time clock has hardware clock core Piece, the hardware clock chip internal integrated temperature compensated crystal oscillator.
Further, the display module includes that the LCD display unit being arranged on the terminal shell and LED indicate list Unit;The LCD display unit includes liquid crystal module, is integrated in the lcd drive chip of the liquid crystal module, and with the liquid The LCDs of brilliant driving chip connection;LED indicating members include the double-colored transmitting-receiving lamps of RS485, power supply indicator, running indicator, Remote-controlled alarm lamp, and for measuring the active reactive indicator lamp of energy efficiency monitoring terminal power.
Further, also including the key circuit being connected with control unit, the key circuit includes being arranged at the end Button in end housing, and the 100nf being connected with the button anti-erroneous judgement electric capacity.Key circuit is input into using common I/O The mode of detection, the electric capacity of 100nf can shake the erroneous judgement for causing in mode.
The present invention also provides a kind of II type electric energy efficiency management system, including multiple above-mentioned II type electric energy efficiency management are eventually End, be connected with the II type electric energy efficiency management terminal electric energy efficiency information concentration and interactive terminal, and with the electric power Efficiency information concentrates the test main frame being connected with interactive terminal;And also include what is be connected with the II type electric energy efficiency management terminal Water, electricity and gas measuring instrumentss, non-electric quantity sampling sensor, electrical quantity acquisition instrument.
The present invention has following prominent beneficial effect:
(1) the II type electric energy efficiency management terminal has special function, the data-handling capacity of innovation, the outside of specialty Interface;
(2) existing or future energy efficiency management system running enterprise design is adapted to completely, no matter from performance or function, its Using the use through whole energy efficiency management system;
(3) in addition, its cost is controllable so that its advantage is more significantly in existing energy efficiency management terminal.
Brief description of the drawings
Fig. 1 is the main structure diagram of II type electric energy efficiency management terminal described in the embodiment of the present invention;
Fig. 2 is the present invention looks up structural representation of II type electric energy efficiency management terminal described in the embodiment of the present invention;
Fig. 3 is the left view structural representation of II type electric energy efficiency management terminal described in the embodiment of the present invention;
Fig. 4 is the forward sight structural representation of II type electric energy efficiency management terminal described in the embodiment of the present invention;
Fig. 5 is the backsight structural representation of II type electric energy efficiency management terminal described in the embodiment of the present invention;
Fig. 6 is total schematic block diagram of II type electric energy efficiency management terminal described in the embodiment of the present invention;
Fig. 7 is the power module communication power supply of the control unit of II type electric energy efficiency management terminal described in the embodiment of the present invention Electrical block diagram;
Fig. 8 is the power module data acquisition of the control unit of II type electric energy efficiency management terminal described in the embodiment of the present invention Circuit construction of electric power schematic diagram;
Fig. 9 is the power module control unit of the control unit of II type electric energy efficiency management terminal described in the embodiment of the present invention Circuit construction of electric power schematic diagram;
Figure 10 is RS485 in the communication module of the control unit of II type electric energy efficiency management terminal described in the embodiment of the present invention One electrical block diagram of communication unit;
Figure 11 is RS485 in the communication module of the control unit of II type electric energy efficiency management terminal described in the embodiment of the present invention Communication unit another electrical block diagram;
Figure 12 is the data acquisition module of the control unit of II type electric energy efficiency management terminal described in the embodiment of the present invention DC analogue quantity sample circuit structural representation;
Figure 13 is the data acquisition module of the control unit of II type electric energy efficiency management terminal described in the embodiment of the present invention DC analogue quantity isolation circuit structural representation;
Figure 14 is the data acquisition module of the control unit of II type electric energy efficiency management terminal described in the embodiment of the present invention The part circuit structure schematic diagram of AC sampling unit;
Figure 15 is total schematic block diagram of II type electric energy efficiency management system described in the embodiment of the present invention.
Description of reference numerals:10- housing bodies part, 11- LCDs, 12- indicator lamps, 13- buttons, 20- housings Mounting portion, 21- connection terminals, 22- guide-track grooves, 23- card columns, 24- fixed lobes, 25- buckling parts, 100- control units, 200- power modules, 210- communication power supply circuits, 220- data acquisition power circuits, 230- control unit power circuits, 300- Data acquisition module, 310- direct current analog quantity acquisition units, 320- AC sampling units, 400- communication modules, 410-RS485 leads to Letter unit, 420- ethernet communication units, 430- infrared communication units, 500- real-time clocks, 600- memory cell, 700- shows Module, 710-LCD display units, 720-LED indicating members, 730- key circuits, 800- remote signalling displacement detection circuit, 900- is distant Control output circuit.
Specific embodiment
Embodiments of the invention are described in detail below:
In energy efficiency management system, it is necessary to pass through a certain kind be responsible for specially acquisition process analysis non-electric quantity (such as flow, pressure Power, temperature, humidity etc.) integrated apparatus of information are detected and are managed that this special purpose device can be received to electric power environmental Collect and process live electric power environmental information, must be concentrated with electric energy efficiency information again carries out data exchange with interactive terminal, at this Under the demand and applied environment of sample, electric energy efficiency management terminal is arisen at the historic moment.
As shown in Figures 1 to 6, the present invention provides a kind of II type electric energy efficiency management terminal, and it uses three-phase and four-line 3* 220/380V powers, and current measuring range is 5 (10) A.The II type electric energy efficiency management terminal (is not marked including terminal shell in figure Show), the control unit 100 in terminal shell is arranged on, power module 200, the storage list being connected with control unit 100 respectively Unit 600, data acquisition module 300, communication module 400 and display module 700.The II type electric energy efficiency management terminal has straight Flow field simulation amount collecting unit 310 and AC sampling unit 320, can to sensor detection obtain non-electric quantity (such as flow, pressure Power, temperature, humidity etc.) information (i.e. DC analogue quantity data) is acquired, and to Current Voltage and power these electrical quantity Measure and data acquisition, so as to realize the detection and management to electric power environmental.The II type electric energy efficiency management terminal can be by The information gathering of applied environment is returned, and carries out the analyzing and processing of next step, and its major function includes non electrical quantities measurement, electric flux Measurement data record, logout, and other data analyses such as measurement, voltage x current power.Electric energy measurement include it is idle and Active split-phase closes phase electrical measurement, and electricity is settled accounts and freezed.
As shown in Figures 1 to 5, the terminal shell of above-mentioned II type electric energy efficiency management terminal mainly includes housing body part 10 and housing installation portion points 20, the housing body part 10 is set to square, is provided with display module 700 and button electricity The peripheral hardware part on road 730, such as LCDs 11, various indicator lamps 12, and various buttons 13.And the housing body part 10 It is internally provided with control unit 100, memory cell 600, data acquisition module 300, communication module 400 etc. unit module electricity Road.In addition, housing installation portion point 20 is designed to U-shaped structure, and above-mentioned housing body part 10 is flush-mounted in the housing installation portion Divide 20 U-shaped structure intermediate groove position, and be respectively mounted on the both sides bossing of housing installation portion point 20 and be provided with one Row's connection terminal 21, for the input and output connection of each circuit module.And, the dorsal part of housing installation portion point 20 also sets up Have and fixed guide-track groove 22 is installed, the II type electric energy efficiency management terminal can be arranged on a guide rail.The other guide rail The side of groove 22 has multiple fixed lobes 24, and opposite side has multiple scalable card columns 23, can manage the II type electric energy efficiency Terminal card is fastened on guide rail.In addition, the dorsal part in housing installation portion point 20 is additionally provided with buckling parts 25, using screw The II type electric energy efficiency management terminal is mounted on wall.
Specifically, the control unit 100 of above-mentioned II type electric energy efficiency management terminal is arranged on inside terminal shell, the control It is the high-speed controller of ARM3 series STM32F107VC that unit 100 uses kernel, the high-speed controller as terminal main control part Part, its maximum running frequency is that maximum processing speed is 72MHz, with 256Kbytes Flash memory spaces, 64Kbytes SRAM, Ethernet MAC interface, and USB2.0full-speed device/host/OTG interfaces.The control unit 100 For processing data information analysis, such as analyzing and processing of non-electric quantity, electrical quantity and other data messages.And, II type electricity Power energy efficiency management terminal also includes the real-time clock 500 being connected with control unit 100, for providing the accurate high-precision time Information, and output clock pulse signal.The real-time clock 500 has the hardware clock core for being internally integrated temperature compensating crystal oscillator Piece.Its specifically used device be RX8025T, its be it is a be internally integrated 32.768KHz temperature compensating crystal oscillators it is hard when Clock chip, can ensure walking time error in 0.5s/d in temperature -40~70 DEG C scope, and terminal supports real-time formula.
And, the memory cell 600 being connected with control unit 100, for store various information that main control unit counted, Conversion exchanges information.The program and data storage that memory cell 600 is used are the 4Mbyte flash of SST companies, The storage chip of 150Kbit/s storage speeds, its full wafer refresh time reaches 35ms, can carry out writing with a brush dipped in Chinese ink for 100,000 times number of times, and can be Data keep not failing in 100 years.Storage chip encapsulation uses generic encapsulation, can need dilatation according to system, and its communication connects Mouth is SPI.In addition, to be lost when ensureing significant data because of terminal operating exception, system additionally with the addition of non-volatile ferroelectricity Memory FM24CL16, special storage significant data and parameter, its memory space is 16Kbit, and bus frequency is 1MHz to the maximum, Data can keep not failing for 10 years, and its communication interface is IIC.
As shown in Figure 7 to 9, II above-mentioned type electric energy efficiency management terminal also includes power module 200, the power module 200 include the voltage endurance capability between the linear transformers with the output of three tunnels, transformer each secondary with more than 2000V, with And communication power supply circuit 210 (as shown in Figure 7), (such as Fig. 8 of data acquisition power circuit 220 of connection corresponding with linear transformer It is shown), control unit power circuit 230 (as shown in Figure 9), three power circuits are respectively used to be adopted to communication module 400, data Collection module 300, control unit 100 are powered.And, linear transformer front end is provided with power protecting circuit, the power protection Circuit can guarantee that circuit is not damaged under overpressure situation and can recovered.Specifically, control unit power circuit 230 uses DC-DC Power supply chip L5970D, output maximum current can reach 1A.And other two-way power circuits use 78L05 power supply chips, can be steady Pressure output 5V.In addition, the power module 200 increased a power supply monitoring chip ADM823, when control unit operation irregularity, nothing Method it is normal to ADM823 output pulse signals when, ADM823 chips can reset to control unit, allow system reboot.
In addition, as shown in Figure 12 to Figure 13, the also data acquisition including being connected with control unit 100 and power module 200 Module 300, the data acquisition module 300 includes direct current analog quantity acquisition unit 310, for gathering the non-electric quantity that measurement is obtained (temperature, humidity, air pressure, flow etc.) data.For the difference of monitored target local environment, the various sensors of assembled in situ (temperature sensor, humidity sensor, pressure sensor, flow sensor etc.), these environment parameters include temperature, humidity, air pressure, Flow etc., monitoring terminal is spaced according to set time carries out data acquisition to the DC analogue quantity of these non-electric quantities output, surveys Amount accuracy requirement is in the range of ± 1%.The direct current analog quantity acquisition unit 310 includes that the DC analogue quantity of two-way independence is sampled Circuit (as shown in figure 12), and for isolating the DC analogue quantity sample circuit and power supply (i.e. data acquisition power circuit 220) DC analogue quantity isolation circuit (as shown in figure 13).I.e. direct current analog quantity acquisition unit 310 by power supply, sample circuit, Isolation circuit is constituted.And, DC analogue quantity sample circuit front end includes the TVS pipe and Zener that are connected with current signal, with And it is connected to the DC current sampling resistor after TVS pipe and Zener, the binary channels sampling being connected with DC current sampling resistor Measurement chip.Specifically, the DC analogue quantity input of two-way independence is devised, has used the AD7911 binary channels of ADI companies to adopt Sample measures chip, and wherein power supply was entering SPX5205M5 voltage stabilizings into 5V outputs by the DC-DCTPV0512 that band is isolated.Isolation circuit Main chip ADM1411 and periphery by that can provide multiple signals isolation is constituted.And the current signal of sample circuit front end input Measured by sampled measurements chip AD7911MR after being converted into voltage through 200R DC current sampling resistors, front end increased anti-overvoltage TVS pipe and anti-reversed Zener.Sampled measurements chip uses the AD7911 of 16 bit resolutions, in temperature wide -40 DEG C~+105 It is can be controlled in the error range of 3.5PPM in the range of DEG C.It is required that measured DC analogue quantity scope be 4/20mA, and eventually The measurement range of end equipment is 3.3V ± 100mV, and certainty of measurement reaches 0.005mV, higher than desired certainty of measurement.The direct current mould Analog quantity collecting unit no matter power supply power or signal transmission on, all use>The electrical equipment isolation of 2000VDC, it is ensured that terminal It is preferably minimized by extraneous electric effect.
As shown in figure 14, the data acquisition module 300 also include AC sampling unit 320, for gather electric current, voltage with And power these electric quantity informations.Specifically, AC sampling includes the measurement of three-phase alternating voltage and alternating current, i.e. exchange is adopted Sample unit includes three-phase alternating voltage measuring circuit and three-phase alternating current flow measurement circuitry.Tension measuring circuit and current measurement electricity Road shares a three-phase alternating current measurement chip, and three-phase alternating current measurement chip uses three-phase power AC measurment special chip ADE7878, A/B/C three-phase current, voltage measurement circuit independence.The tension measuring circuit front end signal processing unit of each of which phase Divide the 2mA/2mA current type voltage transformers using star lattice SPT204A, current measurement circuit front end uses SCT254AX (5A/ 2.5mA) current transformer is used as electric current strong and weak signals switching device, and it is 24 that three-phase alternating current measurement chip uses effective accuracy ADE7858 be responsible for electric current, voltage signal are sampled and are processed.Three-phase alternating current measurement chip ADE7858 can -40 DEG C~ Normal work and ensure 10ppm/ DEG C of error range in+85 DEG C of temperature ranges.Other ADE7858 can also operation independent, metering has The power information such as work(power and reactive power, can be communicated by SPI interface or IIC interfaces with MCU, and data friendship is carried out in real time Mutually.
Further, current type voltage transformer SPT204A (2mA/2mA) is used in tension measuring circuit front end, is passed through 220V is measured photovoltaic conversion and measures electric current, then the alternating voltage sampling resistor turn for passing through 100R into 2mA by the mode of voltage current limliting Formation voltage, is input to three-phase alternating current measurement chip ADE7878.In addition, using current transformer in current measurement circuit front end SCT254AX(5(10)A/2.5mA<0.1%), control source is changed into by the alternating current sampling resistor of 26R to intersect to three Flow measurement chip ADE7878, and current measurement is using the metering system of Differential Input, and add TVS on differential signal both sides Pipe, can avoid three-phase alternating current from measuring chip and be damaged because measuring overtension.
In addition, the II type electric energy efficiency management terminal also includes the communication module 400 being connected with control unit 100, it is The key of II type electric energy efficiency management terminal, including infrared communication unit 430, ethernet communication unit 420, and RS485 are logical Letter unit 410.Wherein, infrared communication unit 430 is far-infrared communication, and communication distance reaches 10m, and circuit is by receiving and sending two It is grouped into, sending signal is 38Khz pulse-modulated signals, receiver possesses the filter function of 38khz in itself, strengthens anti-interference energy Power.And the design side of the MAC interface that ethernet communication unit 420 is carried using ethernet controller KSZ8031 and STM32F107 Case, using the communication mode of RMII between ethernet controller and MAC interface, communication speed reaches 50Mbit/s.Such as Figure 10 to figure Shown in 11, and RS485 communication units 410 include two-way RS485 communication interface RS485-1 and RS485-2, and by terminal lead Out, RS485-1 communication interfaces highest communication speed is 2400bit/s all the way, is only used as mouth of checking meter;Another road RS485-2 leads to Letter interface letter speed reaches 115200bit/s, can be used not only as mouth of checking meter, it may also be used for the routine of II type electric energy efficiency management terminal Property detection safeguard mouth.And, above-mentioned RS485 hardware interfaces using directionless 485 chip, i.e. differential lines no longer need strictly by Can also be communicated according to positive and negative wiring.
Three kinds of above-mentioned communication modes employ two kinds of communication protocols altogether, and one kind is uplink communication agreement, and one kind is descending Communication protocol.Wherein, over the horizon communication system, RS485-2 communication modes use 645/2007 uplink communication agreement, up end End communication can be by the data of RS485-2 communication interface copy reading efficiency terminals;II type can be read by infrared palm machine in addition The data and modification terminal parameter information of electric energy efficiency management terminal;The temporary transient only one of which program upgrade function of Ethernet, after Its application can be promoted according to the difference of applied environment.Whole uplink communication performs standard《DL/T645-2007 multifunctional electric energy Table communication protocol》And its expansion convention.In addition, RS485-1 communication modes use 645/2007 downlink communication agreement, it is responsible for copy reading The data of electric energy meter, the communication interface also has relay function, can improve communication quality, can carry out terminal program upgrading.
In addition, the II type electric energy efficiency management terminal also includes being arranged on terminal shell what is be connected with control unit 100 Display module 700, the display module 700 includes LCD display unit 710 and LED indicating members 720.And the LCD display unit 710 include liquid crystal module, are integrated in the lcd drive chip of liquid crystal module, and the liquid crystal display being connected with lcd drive chip Screen 11, the LCDs 11 is arranged on housing body part 10.LCD display unit 710 uses the liquid crystal mould of 160*160mm Group display mode, because liquid crystal module has been integrated with lcd drive chip, as long as therefore in design by control unit 100 Bus data transfer, you can realize liquid crystal display and brightness regulation, can also be by resetting pin, the control liquid such as LCD backlight control Crystalline substance display.Liquid crystal display menu includes chopped-off head menu and further menu, and chopped-off head menu is aobvious including non-electric quantity information wheel, one-level Menu includes terminal parameter, system information, terminal maintenance.In addition, LED indicating members 720 are also disposed at housing body part 10 On, including the various indicator lamps 12 coordinated using two kinds of light emitting diodes of highlighted feux rouges and green glow.The LED indicating members 710 are wrapped Include the double-colored transmitting-receiving lamps of RS485-1 and RS485-2,3.3V power supply indicators, running indicator, remote-controlled alarm lamp, active reactive indicator lamp, Wherein active reactive indicator lamp can be used to measure the power of energy efficiency monitoring terminal.
Additionally, the II type electric energy efficiency management terminal also includes the key circuit 730 being connected with control unit 100, this is pressed Key circuit 730 includes being arranged at button 13 on terminal shell, and the 100nf being connected with button 13 anti-erroneous judgement electric capacity.Press By the way of common I/O input detections, the electric capacity of 100nf can shake the erroneous judgement for causing to key circuit 730 in mode.And terminal Basic operation using " on ", D score, " it is determined that ", " cancellation " totally four buttons 13 are realized, simple and convenient.
Additionally, the II type electric energy efficiency management terminal also includes the remote signalling displacement observation circuit being connected with control unit 100 800 and remote control output circuit 900.The remote signalling displacement observation circuit 800 include remote signalling protection circuit, remote signalling isolation circuit, and The remote signalling input interface that the active common cathode of two-way is accessed, per interface all the way, band antistatic and misoperation is protected.Remote control output electricity Road by the control signal of 5V, can control the 220V circuits of 5 (10) A, and it includes relay, and is arranged on relay front end Remote control drive circuit, remote control output uses the normally closed way of output of relay normally open (being needed to use by scene), except using low work( Outside Panasonic's relay of consumption, in order to increase the stability and reliability of control signal, also electricity is driven in relay front end addition one Road.
As shown in figure 15, the present invention also provides a kind of II type electric energy efficiency management system, including multiple above-mentioned II type electricity Power energy efficiency management terminal, the electric energy efficiency information that is connected with II type electric energy efficiency management terminal is concentrated and interactive terminal (the two it Between can communication mode be communicatively coupled by the way that RS485, power carrier, micropower be wireless etc.), and with electric energy efficiency information The test main frame that concentration is connected with interactive terminal, and also include the water, electricity and gas measuring instrument being connected with II type electric energy efficiency management terminal Table, non-electric quantity sampling sensor (such as amperometric sensor, digital sensor), electrical quantity acquisition instrument equipment and other Instrumentation etc..
The II type electric energy efficiency management terminal and system that the present invention is provided have non electrical quantities measurement, electrical quantities measurement, electricity Energy meter, measurement data record, logout, efficiency data analysis, communication, I/O configuration features, software upgrading, pulse is defeated Go out, the special function of keyboard operation and display etc.;Also there is the data-handling capacity of innovation, i.e. electric energy measurement, measurement number According to record, logout, efficiency data analysis etc..Wherein electric energy measurement includes idle and active split-phase or closes the survey of phase electricity Amount, electricity is settled accounts and freezed;Measurement data record includes applied environment including voltage x current power temperature humidity stress flow etc. Information data;Logout includes that power factor (PF) is out-of-limit, and non-electric quantity exception, ABC voltages, current imbalance are out-of-limit, in terminal The events such as electric power down, terminal parameter setting;Efficiency data analysis refers to the data using monitoring terminal collection, by embedding energy Effect model, calculates the use energy conversion efficiency of monitored equipment or system, and the calculated value of utilisation system checks terminal The reliability of efficiency value;The external interface of specialty, such as Current Voltage input interface, DC analogue quantity input interface, electrical quantity is adopted Collection interface, communication input/output interface, control interface, remote signalling interface etc.;Consider various possibilities and there is scalability, can be complete Existing or future energy efficiency management system running enterprise design is adapted to entirely, and no matter from performance or function, its application is through whole The use of energy efficiency management system;In addition, modularized design makes its cost controllable so that its advantage is in existing energy efficiency management terminal In it is more significantly.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously Can not therefore be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims (9)

1. a kind of II type electric energy efficiency management terminal, it is characterised in that including terminal shell, be arranged in the terminal shell Control unit, the power module being connected with described control unit respectively, memory cell, data acquisition module, communication module and Display module;
The data acquisition module include for gather measurement obtain temperature, humidity, air pressure, flow non-electric quantity data it is straight Flow field simulation amount collecting unit, and for gathering electric current, voltage and the AC sampling unit of power these electric quantity informations;It is described Direct current analog quantity acquisition unit includes the DC analogue quantity sample circuit of two-way independence, and DC analogue quantity isolation circuit;And The DC analogue quantity sample circuit front end includes the TVS pipe and Zener that are connected with current signal, and is connected to the TVS DC current sampling resistor after pipe and Zener, the binary channels sampled measurements core being connected with the DC current sampling resistor Piece;
The AC sampling unit includes three-phase alternating voltage measuring circuit and three-phase alternating current flow measurement circuitry;Described three intersect Stream tension measuring circuit include current type voltage transformer, the alternating voltage sampling resistor being connected with the voltage transformer, with And the three-phase alternating current measurement chip being connected with the alternating voltage sampling resistor;The three-phase alternating current flow measurement circuitry includes electricity Current transformer, the alternating current sampling resistor being connected with the current transformer, and the alternating current sampling resistor and three-phase AC measurment chip is connected.
2. II type electric energy efficiency management terminal according to claim 1, it is characterised in that the power module includes having Three tunnels output linear transformer, and connection corresponding with the linear transformer communication power supply circuit, data acquisition power supply Circuit, control unit power circuit;And, the linear transformer front end is connected with power protecting circuit.
3. II type electric energy efficiency management terminal according to claim 1, it is characterised in that the communication module includes infrared Communication unit, ethernet communication unit, and RS485 communication units;
Wherein, the RS485 communication units include two-way RS485 communication interfaces, wherein being all the way the RS485-1 for mouth of checking meter Communication interface;Another road be for check meter mouth and routinely detection safeguard the RS485-2 communication interfaces of mouth.
4. II type electric energy efficiency management terminal according to claim 1, it is characterised in that also including with described control unit The remote signalling displacement observation circuit of connection, remote signalling displacement observation circuit includes remote signalling protection circuit, remote signalling isolation circuit, and The remote signalling input interface that the active common cathode of two-way is accessed.
5. II type electric energy efficiency management terminal according to claim 1, it is characterised in that also including remote control output circuit, The remote control output circuit includes relay, and the remote control drive circuit for being arranged on the relay front end.
6. II type electric energy efficiency management terminal according to claim 1, it is characterised in that also including with described control unit The real-time clock of connection, the real-time clock has hardware clock chip, and the hardware clock chip internal integrated temperature compensates crystal Oscillator.
7. II type electric energy efficiency management terminal according to claim 1, it is characterised in that the display module includes setting In the LCD display unit on the terminal shell and LED indicating members;
The LCD display unit includes liquid crystal module, is integrated in the lcd drive chip of the liquid crystal module, and with the liquid The LCDs of brilliant driving chip connection;
LED indicating members include the double-colored transmitting-receiving lamps of RS485, power supply indicator, running indicator, remote-controlled alarm lamp, and for measuring The active reactive indicator lamp of energy efficiency monitoring terminal power.
8. II type electric energy efficiency management terminal according to claim 1, it is characterised in that also including being connected with control unit Key circuit, the key circuit includes being arranged at button on the terminal shell, and is connected with the button The anti-erroneous judgement electric capacity of 100nf.
9. a kind of II type electric energy efficiency management system, it is characterised in that including multiple as described in claim 1-8 any one II type electric energy efficiency management terminal, the electric energy efficiency information being connected with the II type electric energy efficiency management terminal is concentrated and interacted eventually End, and the test main frame being connected with interactive terminal is concentrated with the electric energy efficiency information;And also include and the II type electric power Water, electricity and gas measuring instrumentss, non-electric quantity sampling sensor, the electrical quantity acquisition instrument of energy efficiency management terminal connection.
CN201410723739.5A 2014-12-02 2014-12-02 Ii type electric energy efficiency management terminal and system Expired - Fee Related CN104410164B (en)

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