CN204304613U - II type electric energy efficiency office terminal and system - Google Patents

II type electric energy efficiency office terminal and system Download PDF

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Publication number
CN204304613U
CN204304613U CN201420749022.3U CN201420749022U CN204304613U CN 204304613 U CN204304613 U CN 204304613U CN 201420749022 U CN201420749022 U CN 201420749022U CN 204304613 U CN204304613 U CN 204304613U
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China
Prior art keywords
energy efficiency
circuit
electric energy
terminal
type electric
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Expired - Fee Related
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CN201420749022.3U
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Chinese (zh)
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
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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 utility model provides a kind of II type electric energy efficiency office terminal and system, this terminal comprises terminal shell, be arranged on the control unit in described terminal shell, the power module, memory cell, data acquisition module, communication module and the display module that are connected with described control unit respectively; Described data acquisition module comprises direct current analog quantity acquisition unit, and described direct current analog quantity acquisition unit comprises two-way independently DC analogue quantity sample circuit, and DC analogue quantity buffer circuit; Described AC sampling unit comprises three-phase alternating voltage measuring circuit and three-phase alternating current measuring circuit.This II type electric energy efficiency office terminal has direct current analog quantity acquisition unit and AC sampling unit, can detect to sensor non-electric quantity (as flow, pressure, temperature, the humidity etc.) information (i.e. DC analogue quantity data) obtained to gather, and Current Voltage and these electric parameters of power are measured and data acquisition, thus the detection realized electric power environmental and management.

Description

II type electric energy efficiency office terminal and system
Technical field
The utility model relates to electric power monitoring technical field, particularly relates to a kind of II type electric energy efficiency office terminal and system.
Background technology
Along with national energy-saving reduction of discharging, deepening continuously of DSM work are carried out, build based on the electric energy service management platform of intelligent grid and power consumer energy efficiency monitoring system, become the important technology that China's energy-saving and emission-reduction and DSM work carry out and supported.For specification electric energy service management platform and power consumer energy efficiency monitoring system Construction, according to Uniting, scientific and normal construction principle, be necessary to carry out unified standard to electric energy efficiency monitoring terminal, therefore formulated electric energy efficiency sense terminals standard design criteria.
In existing energy efficiency management system, major part still continues to use the electrical management terminal in each large old plant, the such as centralized automatic meter-reading terminal of state's net, special change office terminal etc., this Terminal Type belongs to universal office terminal in power system, its function can only meet the partial function of energy efficiency management system under certain condition, and under a certain area or some special environment, and electric power terminal seems clumsy and function singleness.Only under different application environment, use specific energy efficiency management terminal, could the application of energy efficiency management system to electric power environmental be performed to ultimate attainment.
Utility model content
Based on this, for solving the single and problem that can not use under some particular surroundings of above-mentioned existing electrical management termination function, the utility model provides a kind of specific II type electric energy efficiency office terminal and system, can use under different application environment, can the application of energy efficiency management system to electric power environmental be performed to ultimate attainment.
Its technical scheme is as follows:
A kind of II type electric energy efficiency office terminal, comprises terminal shell, is arranged on the control unit in described terminal shell, the power module, memory cell, data acquisition module, communication module and the display module that are connected with described control unit respectively; Described data acquisition module comprises direct current analog quantity acquisition unit, and described direct current analog quantity acquisition unit comprises two-way independently DC analogue quantity sample circuit, and DC analogue quantity buffer circuit; Described DC analogue quantity sample circuit front end comprises the TVS pipe and Zener that are connected with current signal, and is connected to the DC current sampling resistor after described TVS pipe and Zener, the binary channels sampled measurements chip be connected with described DC current sampling resistor; Described AC sampling unit comprises three-phase alternating voltage measuring circuit and three-phase alternating current measuring circuit; Described three-phase alternating voltage measuring circuit comprises current type voltage transformer, the alternating voltage sampling resistor be connected with described voltage transformer, and the three-phase alternating current be connected with described alternating voltage sampling resistor measures chip; Described three-phase alternating current measuring circuit comprises current transformer, the alternating current sampling resistor be connected with described current transformer, and described alternating current sampling resistor and three-phase alternating current are measured chip and be connected.
In energy efficiency management system, need to be responsible for integrated apparatus that acquisition process analyzes electric parameters and non-electric quantity (as flow, pressure, temperature, humidity etc.) information specially and to detect electric power environmental by a certain and manage, this special purpose device can be collected and process on-the-spot electric power environmental information, must concentrate with electric energy efficiency information again and carry out exchanges data with interactive terminal, under such demand and applied environment, arise at the historic moment in II type electric energy efficiency office terminal.This II type electric energy efficiency office terminal has direct current analog quantity acquisition unit and AC sampling unit, can detect to sensor non-electric quantity (as flow, pressure, temperature, the humidity etc.) information (i.e. DC analogue quantity data) obtained to gather, and Current Voltage and these electric parameters of power are measured and data acquisition, thus the detection realized electric power environmental and management.
Below technical scheme is further described:
Further, described power module comprises the linear transformer having three tunnels and export, and the communication power supply circuit, data acquisition power circuit, the control unit power circuit that connect corresponding to described linear transformer; And described linear transformer front end is connected with power protecting circuit.Wherein, three power circuits are respectively used to power to communication module, data acquisition module, control unit, and power protecting circuit can ensure that circuit does not damage and can recover under overpressure situation.
Further, described communication module comprises infrared communication unit, ethernet communication unit, and RS485 communication unit; Wherein, described RS485 communication unit comprises two-way RS485 communication interface, and wherein a road is the RS485-1 communication interface for mouth of checking meter; Another road is for checking meter mouth and detect the RS485-2 communication interface of service port routinely.
Further, also comprise the remote signalling be connected with described control unit and conjugate observation circuit, described remote signalling displacement observation circuit comprises remote signalling protection circuit, remote signalling buffer circuit, and the remote signalling input interface of the active common cathode access of two-way.
Further, also comprise remote control output circuit, described remote control output circuit comprises relay, and is arranged on the remote control drive circuit of described relay front end.Remote control exports and adopts the normally closed way of output of relay normally open, except using Panasonic's relay of low-power consumption, in order to increase stability and the reliability of control signal, also adds one drive circuit in relay front end.
Further, also comprise the real-time clock be connected with described control unit, described real-time clock has hardware clock chip, described hardware clock chip internal integrated temperature compensated crystal oscillator.
Further, described display module comprises and is arranged at LCD display unit on described terminal shell and LED indicating member; Described LCD display unit comprises liquid crystal module, is integrated in the lcd drive chip of described liquid crystal module, and the LCDs be connected with described lcd drive chip; LED indicating member comprises the double-colored transmitting-receiving lamp 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 comprise the key circuit be connected with control unit, described key circuit comprises the button be arranged on described terminal shell, and the anti-erroneous judgement electric capacity of the 100nf be connected with described button.Key circuit adopts common I/O to input the mode detected, and the electric capacity of 100nf mode can shake the erroneous judgement caused.
The utility model also provides a kind of II type electric energy efficiency management system, comprise multiple II above-mentioned type electric energy efficiency office terminal, the electric energy efficiency information be connected with described II type electric energy efficiency office terminal is concentrated and interactive terminal, and concentrates with described electric energy efficiency information the Test Host be connected with interactive terminal; And also comprise the water, electricity and gas measuring instrument, non-electric quantity sampling sensor, the electric parameters acquisition instrument that are connected with described II type electric energy efficiency office terminal.
The utility model has following outstanding beneficial effect:
(1) this II type electric energy efficiency office terminal has special function, the data-handling capacity of innovation, the external interface of specialty;
(2) adapt to existing or future energy efficiency management system running enterprise design completely, no matter from performance or function, its application runs through the use of whole energy efficiency management system;
(3) in addition, its cost is controlled, makes its advantage more remarkable in existing energy efficiency management terminal.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of II type electric energy efficiency office terminal described in the utility model embodiment;
Fig. 2 be II type electric energy efficiency office terminal described in the utility model embodiment look up structural representation;
Fig. 3 is the left TV structure schematic diagram of II type electric energy efficiency office terminal described in the utility model embodiment;
Fig. 4 is the forward sight structural representation of II type electric energy efficiency office terminal described in the utility model embodiment;
Fig. 5 is the backsight structural representation of II type electric energy efficiency office terminal described in the utility model embodiment;
Fig. 6 is total schematic block diagram of II type electric energy efficiency office terminal described in the utility model embodiment;
Fig. 7 is the power module communication power supply circuit structural representation of the control unit of II type electric energy efficiency office terminal described in the utility model embodiment;
Fig. 8 is the power module data acquisition circuit construction of electric power schematic diagram of the control unit of II type electric energy efficiency office terminal described in the utility model embodiment;
Fig. 9 is the power module control unit circuit construction of electric power schematic diagram of the control unit of II type electric energy efficiency office terminal described in the utility model embodiment;
Figure 10 is RS485 communication unit electrical block diagram in the communication module of the control unit of II type electric energy efficiency office terminal described in the utility model embodiment;
Figure 11 is another electrical block diagram of RS485 communication unit in the communication module of the control unit of II type electric energy efficiency office terminal described in the utility model embodiment;
Figure 12 is the DC analogue quantity sample circuit structural representation of the data acquisition module of the control unit of II type electric energy efficiency office terminal described in the utility model embodiment;
Figure 13 is the DC analogue quantity buffer circuit structural representation of the data acquisition module of the control unit of II type electric energy efficiency office terminal described in the utility model embodiment;
Figure 14 is the part circuit structure schematic diagram of the AC sampling unit of the data acquisition module of the control unit of II type electric energy efficiency office terminal described in the utility model embodiment;
Figure 15 is total schematic block diagram of II type electric energy efficiency management system described in the utility model embodiment.
Description of reference numerals: 10-housing body part, 11-LCDs, 12-indicator lamp, 13-button, 20-housing mounting portion, 21-splicing ear, 22-guide-track groove, 23-card column, 24-fixed lobe, 25-buckling parts, 100-control unit, 200-power module, 210-communication power supply circuit, 220-data acquisition power circuit, 230-control unit power circuit, 300-data acquisition module, 310-direct current analog quantity acquisition unit, 320-AC sampling unit, 400-communication module, 410-RS485 communication unit, 420-ethernet communication unit, 430-infrared communication unit, 500-real-time clock, 600-memory cell, 700-display module, 710-LCD display unit, 720-LED indicating member, 730-key circuit, 800-remote signalling displacement testing circuit, 900-remote control output circuit.
Detailed description of the invention
Below embodiment of the present utility model is described in detail:
In energy efficiency management system, need to analyze the integrated apparatus of non-electric quantity (as flow, pressure, temperature, humidity etc.) information and to detect electric power environmental by a certain acquisition process of being responsible for specially and manage, this special purpose device can be collected and process on-the-spot electric power environmental information, must concentrate with electric energy efficiency information again and carry out exchanges data with interactive terminal, under such demand and applied environment, arise at the historic moment in electric energy efficiency office terminal.
As shown in Figures 1 to 6, the utility model provides a kind of II type electric energy efficiency office terminal, and it adopts three-phase and four-line 3*220/380V to power, and current measuring range is 5 (10) A.This II type electric energy efficiency office terminal comprises terminal shell (not indicating in figure), be arranged on the control unit 100 in terminal shell, the power module 200 be connected with control unit 100 respectively, memory cell 600, data acquisition module 300, communication module 400 and display module 700.This II type electric energy efficiency office terminal has direct current analog quantity acquisition unit 310 and AC sampling unit 320, can detect to sensor non-electric quantity (as flow, pressure, temperature, the humidity etc.) information (i.e. DC analogue quantity data) obtained to gather, and Current Voltage and these electric parameters of power are measured and data acquisition, thus the detection realized electric power environmental and management.The information gathering of applied environment can be returned by this II type electric energy efficiency office terminal, and carry out next step analyzing and processing, its major function comprises non electrical quantities measurement, electric flux is measured, the measurement data record such as voltage x current power, logout, and other data analyses.Electric flux measurement comprises idle and meritorious phase-splitting or 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 office terminal mainly comprises housing body part 10 and housing mounting portion 20, this housing body part 10 is set to square, be provided with the peripheral hardware part of display module 700 and key circuit 730, as LCDs 11, various indicator lamp 12, and various button 13.And this housing body part 10 inside is provided with control unit 100, memory cell 600, data acquisition module 300, communication module 400 etc. unit module circuit.In addition, this housing mounting portion 20 is designed to U-shaped structure, and above-mentioned housing body part 10 is flush-mounted in the U-shaped structure intermediate groove position of this housing mounting portion 20, and on the both sides bossing of this housing mounting portion 20 respectively install be provided with row's splicing ear 21, the input and output for each circuit module connect.And the dorsal part of this housing mounting portion 20 is also provided with installs fixing guide-track groove 22, this II type electric energy efficiency office terminal can be arranged on a guide rail.This guide-track groove 22 side has multiple fixed lobe 24 in addition, and opposite side has multiple scalable card column 23, this II type electric energy efficiency office terminal clamping can be fixed on guide rail.In addition, the dorsal part in this housing mounting portion 20 is also provided with buckling parts 25, and screw can be utilized to be mounted on wall this II type electric energy efficiency office terminal.
Particularly, the control unit 100 of above-mentioned II type electric energy efficiency office terminal is arranged on terminal shell inside, this control unit 100 adopt kernel be ARM3 series STM32F107VC high-speed controller, this high-speed controller is as the master control unit of terminal, its maximum running frequency and maximum processing speed are 72MHz, have 256Kbytes Flash memory space, 64Kbytes SRAM, Ethernet MAC interface, and USB 2.0ful l-speed device/host/OTG interface.This control unit 100 for processing data information analysis, as the analyzing and processing of non-electric quantity, electric parameters and other data messages.And this II type electric energy efficiency office terminal also comprises the real-time clock 500 be connected with control unit 100, for providing high-precision temporal information accurately, and output clock pulse signal.This real-time clock 500 has the hardware clock chip of inner integrated temperature compensated crystal oscillator.It specifically uses device to be RX8025T, and it is the hardware clock chip of the integrated 32.768KHz temperature compensating crystal oscillator in a inside, can ensure that time error is at 0.5s/d in temperature-40 ~ 70 DEG C of scopes, and the real-time formula of terminal support.
And the memory cell 600 be connected with control unit 100, for storing various information that main control unit adds up, conversion or exchange information.The program that memory cell 600 adopts and data storage are the 4Mbyte flash of SST company, the storage chip of 150Kbit/s storage speed, and its full wafer refresh time reaches 35ms, can carry out writing with a brush dipped in Chinese ink number of times 100,000 times, and can data keep not losing efficacy in 100 years.The encapsulation of this storage chip adopts generic encapsulation, and can need dilatation according to system, its communication interface is SPI.In addition, for ensureing that significant data is lost because of during terminal operating exception, system additionally with the addition of non-volatile ferroelectric memory FM24CL16, special storage significant data and parameter, its memory space is 16Kbit, bus frequency is 1MHz to the maximum, and data can keep not losing efficacy for 10 years, and its communication interface is IIC.
As shown in Figure 7 to 9, II above-mentioned type electric energy efficiency office terminal also comprises power module 200, this power module 200 comprises the linear transformer having three tunnels and export, transformer each secondary between there is the voltage endurance capability of more than 2000V, and the communication power supply circuit 210 (as shown in Figure 7), data acquisition power circuit 220 (as shown in Figure 8), the control unit power circuit 230 (as shown in Figure 9) that connect corresponding to linear transformer, three power circuits are respectively used to power to communication module 400, data acquisition module 300, control unit 100.And linear transformer front end is provided with power protecting circuit, and this power protecting circuit can ensure that circuit does not damage and can recover under overpressure situation.Particularly, control unit power circuit 230 adopts DC-DC power source chip L5970D, and exporting maximum current can reach 1A.And other two-way power circuits adopt 78L05 power supply chip, voltage stabilizing 5V can be exported.In addition, this power module 200 adds a power supply monitoring chip ADM823, when control unit operation irregularity, cannot normally to ADM823 output pulse signal time, ADM823 chip can reset to control unit, allows system reboot.
In addition, as shown in Figure 12 to Figure 13, also comprise the data acquisition module 300 be connected with control unit 100 and power module 200, this data acquisition module 300 comprises direct current analog quantity acquisition unit 310, for gathering non-electric quantity (temperature, humidity, air pressure, the flow etc.) data measured and obtain.For the difference of environment residing for monitored target, assembled in situ various sensor (temperature sensor, humidity sensor, pressure sensor, flow sensor etc.), these environment parameters comprise temperature, humidity, air pressure, flow etc., monitoring terminal carries out data acquisition by the time interval of setting to the DC analogue quantity that these non-electric quantities export, and accuracy of measurement requires in ± 1% scope.This direct current analog quantity acquisition unit 310 comprises two-way independently DC analogue quantity sample circuit (as shown in figure 12), and for isolating the DC analogue quantity buffer circuit (as shown in figure 13) of this DC analogue quantity sample circuit and power supply (i.e. data acquisition power circuit 220).Namely direct current analog quantity acquisition unit 310 is made up of power supply, sample circuit, buffer circuit.And DC analogue quantity sample circuit front end comprises the TVS pipe and Zener that are connected with current signal, and be connected to the DC current sampling resistor after TVS pipe and Zener, the binary channels sampled measurements chip be connected with DC current sampling resistor.Particularly, devise two-way independently DC analogue quantity input, employ the AD7911 binary channels sampled measurements chip of ADI company, wherein power supply becomes 5V to export by the DC-DCTPV0512 with isolation entering SPX5205M5 voltage stabilizing.Buffer circuit is primarily of the chip ADM1411 that multiple signals can be provided to isolate and peripheral composition.And the current signal of sample circuit front end input is converted into after voltage through 200R DC current sampling resistor and is measured by sampled measurements chip AD7911MR, front end adds the TVS pipe of anti-overvoltage and prevents connecing anti-Zener.Sampled measurements chip uses the AD7911 of 16 bit resolutions, can be controlled in the error range of 3.5PPM in the scope of Kuan Wen – 40 DEG C ~+105 DEG C.The measured DC simulation weight range required is 4/20mA, and the measurement category of terminal device is 3.3V ± 100mV, and certainty of measurement reaches 0.005mV, higher than the certainty of measurement required.This direct current analog quantity acquisition unit, no matter on Power supply or Signal transmissions, all adopts the electrical equipment of >2000VDC to isolate, can ensure that terminal drops to minimum by extraneous electric effect.
As shown in figure 14, this data acquisition module 300 also comprises AC sampling unit 320, for gathering these electric quantity information of electric current, voltage and power.Particularly, AC sampling comprises the measurement of three-phase alternating voltage and alternating current, and namely AC sampling unit comprises three-phase alternating voltage measuring circuit and three-phase alternating current measuring circuit.Tension measuring circuit and current measurement circuit share a three-phase alternating current and measure chip, and this three-phase alternating current is measured chip and adopted three-phase power AC measurment special chip ADE7878, and A/B/C three-phase current, voltage measurement circuit are independent.Wherein the tension measuring circuit front end signal processing section of each phase uses the 2mA/2mA current type voltage transformer of star lattice SPT204A, current measurement circuit front end uses SCT254AX (5A/2.5mA) current transformer as electric current strong and weak signals switching device, and the ADE7858 that three-phase alternating current measurement chip employing effective accuracy is 24 is responsible for sampling to electric current, voltage signal and processing.Three-phase alternating current is measured chip ADE7858 and can normally be worked in-40 DEG C ~+85 DEG C temperature ranges and ensure 10ppm/ DEG C of error range.ADE7858 also can operation independent in addition, and power information such as metering active power and reactive power etc., can be communicated with MCU by SPI interface or IIC interface, carry out data interaction in real time.
Further, current type voltage transformer SPT204A (2mA/2mA) is adopted in tension measuring circuit front end, by the mode of voltage current limliting, 220V measuring voltage is changed into 2mA and measure electric current, change into voltage by the alternating voltage sampling resistor of 100R again, be input to three-phase alternating current and measure chip ADE7878.In addition, current transformer SCT254AX (5 (10) A/2.5mA<0.1%) is adopted in current measurement circuit front end, change into voltage through the alternating current sampling resistor of 26R to be input to three-phase alternating current and to measure chip ADE7878, and current measurement adopts the metering system of Differential Input, and add TVS pipe on differential signal both sides, three-phase alternating current can be avoided to measure chip and to damage because measuring voltage is too high.
In addition, this II type electric energy efficiency office terminal also comprises the communication module 400 be connected with control unit 100, and it is the key of II type electric energy efficiency office terminal, comprises infrared communication unit 430, ethernet communication unit 420, and RS485 communication unit 410.Wherein, infrared communication unit 430 is far-infrared communication, and communication distance reaches 10m, and circuit forms by receiving and send two parts, and sending signal is 38Khz pulse-modulated signal, and receiver itself possesses the filter function of 38khz, strengthens antijamming capability.And the design of the MAC interface that ethernet communication unit 420 adopts ethernet controller KSZ8031 and STM32F107 to carry, adopt the communication mode of RMII between ethernet controller and MAC interface, communication speed reaches 50Mbit/s.As shown in Figure 10 to Figure 11, and RS485 communication unit 410 comprises two-way RS485 communication interface RS485-1 and RS485-2, and by terminal lead out, a road RS485-1 communication interface highest communication speed is 2400bit/s, only as mouth of checking meter; Another road RS485-2 communication interface letter speed reaches 115200bit/s, not only can be used as mouth of checking meter, also can be used for the detection service port routinely of II type electric energy efficiency office terminal.And above-mentioned RS485 hardware interface adopts directionless 485 chips, and namely differential lines no longer needs also can communicate in strict accordance with positive and negative wiring.
Three kinds of above-mentioned communication modes have employed two kinds of communication protocols altogether, and one is uplink communication agreement, and one is downlink communication agreement.Wherein, over the horizon communication system, RS485-2 communication mode use 645/2007 uplink communication agreement, and upstream terminal communication can by the data of RS485-2 communication interface copy reading efficiency terminal; Data and the amendment terminal parameter information of II type electric energy efficiency office terminal can be read in addition by infrared palm machine; Ethernet temporarily only has a program upgrade function, can promote its application according to the difference of applied environment later.Whole uplink communication operative norm " DL/T645-2007 multi-function watt-hour meter communication protocol " and expansion convention thereof.In addition, RS485-1 communication mode uses 645/2007 downlink communication agreement, and be responsible for the data of copy reading electric energy meter, this communication interface also has relay function, can improve communication quality, can carry out terminal program upgrading.
In addition, this II type electric energy efficiency office terminal also comprises the display module 700 being arranged at and terminal shell is connected with control unit 100, and this display module 700 comprises LCD display unit 710 and LED indicating member 720.And this LCD display unit 710 comprises liquid crystal module, be integrated in the lcd drive chip of liquid crystal module, and the LCDs 11 be connected with lcd drive chip, this LCDs 11 is arranged in housing body part 10.LCD display unit 710 adopts the liquid crystal module display mode of 160*160mm, because liquid crystal module is integrated with lcd drive chip, as long as therefore in design by the bus data transfer of control unit 100, liquid crystal display and brightness regulation can be realized, can also pass through resetting pin, LCD backlight control etc. control liquid crystal display.Liquid crystal display menu comprises chopped-off head menu and further menu, and chopped-off head menu to comprise non-electric quantity information wheel aobvious, further menu comprises terminal parameter, system information, terminal maintenance.In addition, LED indicating member 720 is also arranged in housing body part 10, comprises the indicator lamp 12 of the highlighted ruddiness of various employing and green glow two kinds of light emitting diodes cooperations.This LED indicating member 710 comprises the double-colored transmitting-receiving lamp of RS485-1 and RS485-2,3.3V power supply indicator, running indicator, remote-controlled alarm lamp, active reactive indicator lamp, and wherein active reactive indicator lamp can be used for the power measuring energy efficiency monitoring terminal.
In addition, this II type electric energy efficiency office terminal also comprises the key circuit 730 be connected with control unit 100, and this key circuit 730 comprises the button 13 be arranged on terminal shell, and the anti-erroneous judgement electric capacity of the 100nf be connected with button 13.Key circuit 730 adopts common I/O to input the mode detected, and the electric capacity of 100nf mode can shake the erroneous judgement caused.And terminal basic operation adopt " on ", D score, " determination ", " cancellation " totally four buttons 13 realize, simple and convenient.
In addition, this II type electric energy efficiency office terminal also comprises the remote signalling be connected with control unit 100 and conjugates observation circuit 800 and remote control output circuit 900.This remote signalling displacement observation circuit 800 comprises remote signalling protection circuit, remote signalling buffer circuit, and the remote signalling input interface of the active common cathode access of two-way, and each road interface is all with antistatic and misoperation protection.This remote control output circuit is by the control signal of 5V, control the 220V circuit of 5 (10) A, it comprises relay, and be arranged on the remote control drive circuit of relay front end, remote control exports and adopts the normally closed way of output of relay normally open (needing to use by scene), except using Panasonic's relay of low-power consumption, in order to increase stability and the reliability of control signal, also add one drive circuit in relay front end.
As shown in figure 15, the utility model also provides a kind of II type electric energy efficiency management system, comprise multiple II above-mentioned type electric energy efficiency office terminal, the electric energy efficiency information be connected with II type electric energy efficiency office terminal is concentrated and (can be passed through RS485 therebetween with interactive terminal, power carrier, micropower is wireless communication mode of Denging communicates to connect), and concentrate with electric energy efficiency information the Test Host be connected with interactive terminal, and also comprise the water, electricity and gas measuring instrument be connected with II type electric energy efficiency office terminal, non-electric quantity sampling sensor is (as amperometric sensor, digital sensor), electric parameters acquisition instrument equipment, and other instrumentations etc.
The II type electric energy efficiency office terminal that the utility model provides and system have non electrical quantities measurement, electrical quantities measurement, electrical energy metering, measurement data record, logout, efficiency data analysis, communication, I/O configuration feature, software upgrading, pulse exports, the function that keyboard operation and display etc. are special; Also there is the data-handling capacity of innovation, i.e. electric flux measurement, measurement data record, logout, efficiency data analysis etc.Wherein electric flux measurement comprises idle and meritorious phase-splitting or closes phase electrical measurement, and electricity is settled accounts and freezed; Measurement data record comprises voltage x current power temperature humidity stress flow etc. and comprises applied environment information data; It is out-of-limit that logout comprises power factor (PF), and non-electric quantity is abnormal, and ABC voltage, current imbalance are out-of-limit, terminal power on and off, the events such as terminal parameter setting; Efficiency data analysis refers to the data utilizing monitoring terminal to gather, and by embedding energy efficiency model, calculates the use energy conversion efficiency of monitored equipment or system, and the reliability of the calculated value of utilisation system inspection end use efficiency value; The external interface of specialty, as Current Voltage input interface, DC analogue quantity input interface, electric parameters acquisition interface, communication input/output interface, control interface, remote signalling interface etc.; Consider multiple possibility and have scalability, can adapt to existing or future energy efficiency management system running enterprise design completely, no matter from performance or function, its application runs through the use of whole energy efficiency management system; In addition, modularized design makes its cost controlled, makes its advantage more remarkable in existing energy efficiency management terminal.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this description is recorded.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.

Claims (9)

1. a type electric energy efficiency office terminal, it is characterized in that, comprise terminal shell, be arranged on the control unit in described terminal shell, the power module, memory cell, data acquisition module, communication module and the display module that are connected with described control unit respectively;
Described data acquisition module comprises direct current analog quantity acquisition unit and AC sampling unit; Described direct current analog quantity acquisition unit comprises two-way independently DC analogue quantity sample circuit, and DC analogue quantity buffer circuit; And described DC analogue quantity sample circuit front end comprises the TVS pipe and Zener that are connected with current signal, and be connected to the DC current sampling resistor after described TVS pipe and Zener, the binary channels sampled measurements chip be connected with described DC current sampling resistor;
Described AC sampling unit comprises three-phase alternating voltage measuring circuit and three-phase alternating current measuring circuit; Described three-phase alternating voltage measuring circuit comprises current type voltage transformer, the alternating voltage sampling resistor be connected with described voltage transformer, and the three-phase alternating current be connected with described alternating voltage sampling resistor measures chip; Described three-phase alternating current measuring circuit comprises current transformer, the alternating current sampling resistor be connected with described current transformer, and described alternating current sampling resistor and three-phase alternating current are measured chip and be connected.
2. II type electric energy efficiency office terminal according to claim 1, it is characterized in that, described power module comprises the linear transformer having three tunnels and export, and the communication power supply circuit, data acquisition power circuit, the control unit power circuit that connect corresponding to described linear transformer; And described linear transformer front end is connected with power protecting circuit.
3. II type electric energy efficiency office terminal according to claim 1, it is characterized in that, described communication module comprises infrared communication unit, ethernet communication unit, and RS485 communication unit;
Wherein, described RS485 communication unit comprises two-way RS485 communication interface, and wherein a road is the RS485-1 communication interface for mouth of checking meter; Another road is for checking meter mouth and detect the RS485-2 communication interface of service port routinely.
4. II type electric energy efficiency office terminal according to claim 1; it is characterized in that; also comprise the remote signalling be connected with described control unit and conjugate observation circuit; described remote signalling displacement observation circuit comprises remote signalling protection circuit; remote signalling buffer circuit, and the remote signalling input interface of the active common cathode access of two-way.
5. II type electric energy efficiency office terminal according to claim 1, it is characterized in that, also comprise remote control output circuit, described remote control output circuit comprises relay, and is arranged on the remote control drive circuit of described relay front end.
6. II type electric energy efficiency office terminal according to claim 1, it is characterized in that, also comprise the real-time clock be connected with described control unit, described real-time clock has hardware clock chip, described hardware clock chip internal integrated temperature compensated crystal oscillator.
7. II type electric energy efficiency office terminal according to claim 1, is characterized in that, described display module comprises and is arranged at LCD display unit on described terminal shell and LED indicating member;
Described LCD display unit comprises liquid crystal module, is integrated in the lcd drive chip of described liquid crystal module, and the LCDs be connected with described lcd drive chip;
LED indicating member comprises the double-colored transmitting-receiving lamp 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 office terminal according to claim 1, it is characterized in that, also comprise the key circuit be connected with control unit, described key circuit comprises the button be arranged on described terminal shell, and the anti-erroneous judgement electric capacity of the 100nf be connected with described button.
9. a type electric energy efficiency management system, it is characterized in that, comprise multiple II type electric energy efficiency office terminal as described in claim 1-8 any one, the electric energy efficiency information be connected with described II type electric energy efficiency office terminal is concentrated and interactive terminal, and concentrates with described electric energy efficiency information the Test Host be connected with interactive terminal; And also comprise the water, electricity and gas measuring instrument, non-electric quantity sampling sensor, the electric parameters acquisition instrument that are connected with described II type electric energy efficiency office terminal.
CN201420749022.3U 2014-12-02 2014-12-02 II type electric energy efficiency office terminal and system Expired - Fee Related CN204304613U (en)

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CN201410723739.5A CN104410164B (en) 2014-12-02 2014-12-02 Ii type electric energy efficiency management terminal and system

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CN104410164A (en) * 2014-12-02 2015-03-11 广东中钰科技股份有限公司 II-type electric energy efficiency management terminal and system
CN106602726A (en) * 2016-12-15 2017-04-26 广东工业大学 Power efficiency monitoring terminal and method thereof
CN107015512A (en) * 2017-06-02 2017-08-04 国网山东省电力公司烟台供电公司 A kind of intelligent electric power steward system

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CN100535951C (en) * 2006-12-26 2009-09-02 广州智光电气股份有限公司 Loading control and multi-channel time-shared charge electric energy combined management system and its implementing method
JP2008271721A (en) * 2007-04-23 2008-11-06 Power System:Kk Power management system
CN101699298B (en) * 2009-11-12 2011-08-10 安徽鑫龙电器股份有限公司 One-phase digital current/voltage measuring instrument and measuring method thereof
CN103595139A (en) * 2013-11-27 2014-02-19 国家电网公司 Load monitoring device for electrical power system
CN104410164B (en) * 2014-12-02 2017-06-16 广东中钰科技股份有限公司 Ii type electric energy efficiency management terminal and system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104410164A (en) * 2014-12-02 2015-03-11 广东中钰科技股份有限公司 II-type electric energy efficiency management terminal and system
CN106602726A (en) * 2016-12-15 2017-04-26 广东工业大学 Power efficiency monitoring terminal and method thereof
CN106602726B (en) * 2016-12-15 2019-05-28 广东工业大学 A kind of electric energy efficiency monitoring terminal and method
CN107015512A (en) * 2017-06-02 2017-08-04 国网山东省电力公司烟台供电公司 A kind of intelligent electric power steward system

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