CN108646088A - A kind of master-slave mode can discrete distribution multi-loop electric energy monitoring terminal and method - Google Patents

A kind of master-slave mode can discrete distribution multi-loop electric energy monitoring terminal and method Download PDF

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CN108646088A
CN108646088A CN201810360626.1A CN201810360626A CN108646088A CN 108646088 A CN108646088 A CN 108646088A CN 201810360626 A CN201810360626 A CN 201810360626A CN 108646088 A CN108646088 A CN 108646088A
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slave
module
host
circuit
voltage signal
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CN108646088B (en
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黄水生
夏国平
马如明
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NANJING TIANSU AUTOMATION CONTROL SYSTEM CO Ltd
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NANJING TIANSU AUTOMATION CONTROL SYSTEM CO Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R22/00Arrangements for measuring time integral of electric power or current, e.g. electricity meters
    • G01R22/06Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a kind of master-slave mode can discrete distribution multi-loop electric energy monitoring terminal, including host and several slaves, host includes current signal collection module, voltage signal acquisition module, metering module, power module, controller module, communication module, human-computer interaction module, slave interface module, slave includes current signal collection module, measure control module, slave interface module, the slave interface module of the host is connected with an interface of the slave interface module of one of slave respectively per interfaces, another interface of slave interface module for being connected slave is connected with any one interface of next slave.The host of the present invention can independent operating, slave discrete can be distributed, between relative installation it is unrestricted, it realizes and the electric flux in multiple three-phase circuits or single-phase circuit is monitored, it avoids the puncture of the multiple spot in transformation project and takes electric construction, the difficulty and construction period for reducing circuit combing simultaneously, improve transformation safety.

Description

A kind of master-slave mode can discrete distribution multi-loop electric energy monitoring terminal and method
Technical field
The present invention relates to a kind of master-slave mode can discrete distribution multi-loop electric energy monitoring terminal and method, belong to electric power prison The technical field of control and energy consumption monitoring.
Background technology
[2008] No. 114 texts of house and town and country construction Bu Jian sections(2008-06-24)《It is built about government offices' office is printed and distributed Build the notice that the relevant technologies directive/guide is built with large public building energy-consumption monitoring system》Implement.Jiangsu, Shanghai are released Soviet Union and are built respectively (2007) No. 217 texts of section《Jiangsu Province's public building is with can measure design code》It establishs diplomatic relations (2008) No. 828 texts with Shanghai《About into one Step reinforces the notice of this city civil buildings mechanical discipline energy-saving design technical management》, further clearly propose to set main electricity consumption Metering separate is applied, business accounting unit should be metered into office building, market, dormitory etc.;To medical unit, hotel guest-room, school Classroom should be by floor or function division metering etc., and is included in check of drawings and inspection standards of completed project.
Under this Policy Background, building energy consumption monitors system and energy efficiency management system is rapidly developed and extensive use, And the implementation of system item and function realize the support for needing situ metrology instrument, carry out electricity consumption facility or the classification subitem in region Metering.
In the building energy consumption of the industries such as such as hospital monitors the projects such as system, energy efficiency management system, reworked project accounts for Prodigious ratio, the metering class product of mainstream on Vehicles Collected from Market, more consideration is given to grassroot projects, are often touched for reworked project To problems such as construction inconveniences.Therefore, it is more convenient the installation of reworked project and construction while can more meet classification metering separate The metering product of demand, and market prospects more competitive than traditional metering product.
In the transformation projects such as hospital, airport, commercial real estate, power-off or the time that can be powered off are not allowed with electrical circuit much very It is short, it installs measurement meter additional to scene and causes prodigious difficulty;On the other hand, the original distribution box in transformation project scene, power distribution cabinet It is required that preferably reusing, the duplexure outlet layout in similar floor distribution box is quite compact, therefore to the gauge table of installation More stringent requirements are proposed for the volume and mounting means of meter, so that the remaining space of the original babinet in scene, cabinet can be utilized to complete The installation of meter, and adapt to the energy consumption measure of duplexure;Furthermore the wire communication track laying construction of transformation project is very It is extremely difficult in the case of more, it is desirable to provide wireless telecommunications solution;User is more sensitive in terms of project reconstruction cost.
For the above problem encountered in transformation project, Nanjing newly joins electronics and proposes that " integrated small intelligent electric power is adopted Collect module -201510469865.7;The solution of 105021929B " takes electricity to obtain voltage signal and power supply using puncture, And be multiplexed puncturing structure and product is fixed on tested cable, product is integrated with current transformer and wireless communication module, only needs Want an external zero curve that can work, product, which realizes, does not power off the small target of Fast Installation, wireless telecommunications, installation space, Prodigious facility is provided for the engineering construction of transformation project.It must propose simultaneously, still some are insufficient or can for the solution Room for promotion:1, a single-phase electricity consumption cable uses an acquisition module, a three-phase circuit that will use three acquisition modules, Each acquisition module will configure a wireless telecommunications submodule, and scheme hardware cost is relatively high, communicate networking workload It is relatively large;2, acquisition module include wireless telecommunications submodule, current acquisition module, power module, voltage puncture electricity-fetching module, Overall volume is relatively large, is only suitable for, in the big current loops such as such as low-voltage distribution room, being not particularly suited for such as floor distribution box The minimum metering occasion of the available installation space of decile branch electricity consumption transmission line circuit, application range are subject to certain restrictions;3, every Item is tested cable and is required for being punctured destruction cable insulation.
Invention content
It can be discrete point technical problem to be solved by the present invention lies in a kind of master-slave mode is overcome the deficiencies of the prior art and provide The multi-loop electric energy monitoring terminal and method of cloth solve the existing single-phase electricity consumption cable of one, monitoring terminal and use an acquisition Module needs multiple spot puncture to take electricity construction with collection voltages signal, causes case hardware cost relatively high, communicates networking workload Also relatively large, it can not flexibly realize the problem of multiloop measures or independently measures function.
The present invention specifically uses following technical scheme to solve above-mentioned technical problem:
A kind of master-slave mode can discrete distribution multi-loop electric energy monitoring terminal, including host and several slaves, the host Including current signal collection module, voltage signal acquisition module, metering module, power module, controller module, communication module, Human-computer interaction module, slave interface module, the wherein input terminal of metering module respectively with the output of current signal collection module End is connected with an output end of voltage signal acquisition module, and the output end of metering module is connected with controller module;It is described Controller module is also respectively connected with communication module, human-computer interaction module, slave interface module;And the voltage signal Another output end of acquisition module is connected with power module, slave interface module respectively, and power module and slave interface Module is connected;
Each slave includes current signal collection module, measures control module, slave interface module, wherein current signal The output end of acquisition module is connected with control module is measured, and measures control module and be connected with slave interface module;
Also, every interfaces of the slave interface module of the host respectively with the slave interface module of one of slave An interface be connected, be connected slave slave interface module another interface and next slave slave interface Any one interface of module is connected.
Further, as a preferred technical solution of the present invention:The voltage signal acquisition module of the host includes Three voltage signal acquisition circuits, wherein each phase voltage signal acquisition circuit includes connected reduction voltage circuit and filter circuit.
Further, as a preferred technical solution of the present invention:The slave interface module of the host includes adopting Sample voltage signal level is promoted and follows module, power supply output current limiting switch module and three crystal head jacks, each of described Crystal head jack separately includes three power supply, voltage and communication signal circuits, and power supply signal circuit is switched with power supply output current limiting Module is connected, and the promotion of voltage signal circuit and sampled voltage signal level and module is followed to be connected and order circuit and host Communication module be connected.
Further, as a preferred technical solution of the present invention:The slave interface module of the slave includes two A crystal head jack, each crystal head jack include three power supply, voltage and communication signal circuits, and described crystal head is inserted Electric power loop, voltage circuit and the order circuit in hole respectively with the electric power loop of another crystal head jack, voltage circuit and logical News circuit is connected in parallel.
Further, as a preferred technical solution of the present invention:On each slave setting for be fixed on by Survey the band position limiting pile in return cable.
The present invention also propose a kind of master-slave mode can discrete distribution multi-loop electric energy monitoring method, this method Intrusion Detection based on host With several slaves, include the following steps:
It is acquired using host and is tested the voltage signal in circuit and transmits it to each slave;
Each slave is tested the electricity in circuit where the slave according to the voltage signal and slave acquisition from host of acquisition Signal is flowed, electric flux is carried out and calculates the measurement data for obtaining each slave, and the measurement data of acquisition is stored and transmitted to master Machine;
The host carries out configuration combination to each slave, is mapped to several virtual three-phase circuit measuring terminals and/or several A Unit phases circuit measuring terminals, the measurement data transmitted by each slave, which combines to obtain, corresponds to virtual three-phase or the measurement of single-phase circuit The monitoring data of terminal, to realize that the electric flux in multiple circuits monitors.
Further, as a preferred technical solution of the present invention:The method further includes by host acquisition host institute Current signal in tested circuit, and combine the voltage signal of host acquisition to carry out electric flux and calculate the monitoring number for obtaining host According to.
Further, as a preferred technical solution of the present invention:The host carries out configuration combination to each slave Include that slave is registered to Virtual three-phase or single-phase circuit measuring terminals in the contingency table of host memory, wherein slave communicates Address is automatically assigned and the virtual three-phase or the address of single-phase circuit measuring terminals are configured and are stored in host In.
The present invention uses above-mentioned technical proposal, can have the following technical effects:
Host of the present invention itself is a complete electric flux monitoring terminal, can be detached from slave independent operating, realize to 1 tunnel three The single-phase circuit in phase circuit or 3 tunnels carries out the function of electric flux monitoring.It is main on 3 tunnels of realization when single-phase circuit electric flux monitoring function Machine is invented 3 single-phase circuit measuring terminals.Connected between host and slave, between slave and slave using flexible cable It connects, the relative installation between them is unrestricted, can be installed according to the discrete deployment of site of deployment actual conditions, needed for host The quantity of the slave of collocation also can flexibly increase and decrease as needed.Electric flux monitoring terminal can be met can Fast Installation deployment, support Do not power off that installation, equipment volume is small, be suitable for the metering of subbranch circuit, can wireless telecommunications, hardware and the low demand of construction cost.
Therefore, compared with prior art, the present invention there are the advantages of it is as follows:
1, it realizes in the application that multiloop measures, it is only necessary to which host of the invention is in busbar or a certain three-phase circuit, by outer The voltage signal for the spare outlet acquisition power grid of insulation puncture line clamping or somewhere set, the slave for sharing to other measuring loops carry out Survey calculation uses, and avoids the puncture of the multiple spot in especially transformation project and takes electric construction, has not only improved transformation safety, but also solution The problem of transformation scene power-off constructional difficulties of having determined, while slave also eliminates voltage signal acquisition module, supports well The minimum of slave volume designs and saves hardware cost, and slave is allow to be answered well on subbranch circuit measures With.
2, slave of the invention uses open type current transformer and measures control module integrated design, small Ingeniously.Slave can be directly sleeved on the duplexure cable of similar floor distribution box and directly be measured electrical circuit;For Slave can be sleeved on the secondary circuit cable of external great current mutual inductor and be surveyed indirectly to electrical circuit by big current loop Amount, to having the very convenient with the rebuilding construction that reuses of electrical circuit of current transformer originally, construction efficiency is very high to save Construction cost.
3, host communication module of the invention includes RS-485 wire communications module and LoRa wireless communication modules, wirelessly Communication modes can obviously reduce the construction complexity of transformation project, multiple circuits of multi-loop electric energy monitoring terminal of the invention Measurement data concentrate master system uploaded to by the communication module of host, reduce the overall wireless communication node of project Quantity reduces wireless networking complexity, while the hardware cost of apparent less communication module, wire communication net is set up facilitating Occasion can also select wire communication mode, improve the selection flexibility of communication modes.
4, slave quantity can flexibly increase and decrease according to the measuring loop number at project scene, by prefabricated both ends with crystal head Flexible cable is attached extension and is convenient to, and slave discrete can be distributed, and the relative installation between them is unrestricted System.Each slave can be combined into several virtual three-phase circuit measuring terminals and several in host according to actual conditions Virtual single-phase circuit measuring terminals reduce the difficulty and construction period of circuit combing.
Description of the drawings
Fig. 1 be the present invention a kind of master-slave mode can discrete distribution multi-loop electric energy monitoring terminal structure diagram.
Fig. 2 is the structure diagram of the host of the present invention.
Fig. 3 is the structure diagram of the slave of the present invention.
Fig. 4 is the circuit diagram of the controller module of the host of the present invention.
Fig. 5 is the circuit diagram of the voltage signal acquisition module of the host of the present invention.
Fig. 6 is the circuit diagram of the current signal collection module of the host of the present invention.
Fig. 7 is the circuit diagram of the metering module of the host of the present invention.
Fig. 8 is the crystal head jack circuit diagram of the slave interface module of the host of the present invention.
Fig. 9 is that the sampled voltage signal level of the slave interface module of the host of the present invention promotes and follow circuit diagram.
Figure 10 is the power supply output current limiting switching circuit figure of the slave interface module of the host of the present invention.
Figure 11 is that the slave of the present invention measures the circuit diagram of control module.
Figure 12 is that host internal virtual monitoring terminal and the slave of the present invention links mapping table.
Figure 13 is the host appearance instance graph of the present invention.
Figure 14 is the slave appearance instance graph of the present invention.
Figure 15 is the typical project installation effect figure of the present invention.
Specific implementation mode
Embodiments of the present invention are described with reference to the accompanying drawings of the specification.
As shown in Figure 1, the present invention devise a kind of master-slave mode can discrete distribution multi-loop electric energy monitoring terminal, including Host and several slaves, the host are attached using flexible cable with each slave.
As shown in Fig. 2, the host includes current signal collection module, voltage signal acquisition module, metering module, power supply Module, controller module, communication module, human-computer interaction module, slave interface module, wherein current signal collection module is defeated One output end of outlet and voltage signal acquisition module is connected with the input terminal of metering module respectively, and the output of metering module End is connected with controller module, and metering module is responsible for the voltage and current signals that acquisition comes measuring calculating, with controller Module interacts;The controller module is also respectively connected with communication module, human-computer interaction module, slave interface module; And another output end of the voltage signal acquisition module is connected with power module, slave interface module respectively, and power supply Module is connected with slave interface module;The wherein phase input of the voltage signal acquisition module provides for power module simultaneously Power input conveys voltage acquisition signal for slave interface module, on the one hand provides working power for host itself;Another party Face, the power module are transferred to the slave interface mould of each slave by the slave interface module and flexible cable of host Block provides working power for each slave.
As shown in figure 3, each slave includes current signal collection module, measures control module, slave interface mould Block, the wherein output end of current signal collection module are connected with control module is measured, and measure control module and slave interface Module is connected, and obtains working power and voltage signal;The measurement control module is respectively according to the voltage signal of acquisition and electric current Signal measures calculating and stores, and communication interaction is carried out by slave interface module and host, realizes parameter setting, surveys Measure the functions such as data transfer.
Also, every interfaces of the slave interface module of host slave interface with one of slave respectively One interface of module is connected, and is connected the slave of another interface and next slave of the slave interface module of slave Any one interface of interface module is connected, and so on, connecting line uses flexible cable.
In the present embodiment, the host uses single-phase or multiphase slave interface module, wherein the multiphase principal and subordinate of host Machine interface module may include that A phases slave interface, B phases slave interface and C phase slave interfaces, host pass through each phase slave Interface is attached with each slave, and topology extends by the way of daisy chain bus between multiple slaves of same phase.This reality Flexible cable in example uses 6 prefabricated core telephone wires, and the connector at cable both ends uses RJ12 crystal plugs, connection host with It is convenient between slave, slave and slave.
The slave interface module of the host includes that sampled voltage signal level promotes and follow module, power supply output limit Switch module and three crystal head jacks are flowed, each crystal head jack separately includes three power supply, voltage and communication letters Number circuit, power supply signal circuit are connected with power supply output current limiting switch module, voltage signal circuit and sampled voltage signal level It is promoted and module is followed to be connected, order circuit is connected with the communication module of host;Three crystal head jacks provide power supply, 3 kinds of contacts such as voltage signal and serial communication.The slave interface module of slave includes two crystal head jacks, each crystal head Jack includes three power supply, voltage and communication signal circuits, three signal circuits of described crystal head jack respectively with Three signal circuits of another crystal head jack are connected in parallel respectively.
Also, the connector at flexible cable both ends uses crystal head, the crystal head of 1 one end of flexible cable to be inserted into the principal and subordinate of host The crystal head jack of machine interface module, the crystal head of 1 other end of flexible cable are inserted into one of the slave interface module of slave 1 Crystal head jack, the crystal head of 2 one end of flexible cable are inserted into another crystal head jack of the slave interface module of slave 1, The crystal head of 2 other end of flexible cable is inserted into a crystal head jack of the slave interface module of slave 2, and so on, soon Speed completes connecting hand in hand between host and slave, between slave and slave.
The voltage signal acquisition module of host includes three voltage signal acquisition circuits in the terminal of the present invention, each phase electricity It includes reduction voltage circuit and filter circuit to press signal acquisition circuit.Voltage signal through being depressured and being filtered includes two branches, One branch is transmitted to the metering module of host;Another branch is transmitted to the slave interface module of host, through connecting host The flexible cable of slave interface module be transferred to the slave interface module of each slave.
The voltage signal acquisition module of the host, by external insulation puncture line clamping from busbar or some three-phase circuit Outlet acquires the voltage signal of power grid, and the current signal with current signal collection module acquisition after being depressured and being filtered is transmitted to While computation chip participation operation result of measurement obtains the monitoring data of host, sends the slave interface module of host to, pass through The slave that the output of slave interface module shares to other measuring loops measures calculating use.
The slave is tested the current signal in circuit by the current signal collection module acquisition of itself, passes through slave Interface module obtains the voltage signal from host, and the current signal of itself acquisition and voltage signal are transmitted to the survey of slave For amount control module to carry out measurement data and the storage that the survey calculation of electric flux obtains slave, the measurement data of each slave is logical Slave interface module and flexible cable communication transfer are crossed to host.Also, host is according to practical situations, by each slave Carry out configuration combination, if being mapped to several virtual three-phase circuits monitoring terminals and a dry Unit phases circuit monitoring terminal, by from Machine is transferred to the measurement data of host that is, is combined into the monitoring data of corresponding Virtual Monitoring terminal, realizes the electricity in multiple circuits Energy monitoring.The wired or wireless connection that external master system is set up by the communication module with host, with virtual prison It surveys terminal to be communicated, obtains the data of Virtual Monitoring terminal.And host can also acquire the electricity in tested circuit where host Signal is flowed, and combines the voltage signal of host acquisition to carry out electric flux and calculates the monitoring data for obtaining host.
This implementation provides the particular circuit configurations of the monitoring terminal of the present invention, as shown in following Fig. 4 to 11.It is specific as follows:
As shown in figure 4, the CPU of the host controller module uses LPC1766 chips, pin 4 and watchdog chip IMP706R Pin 7 be connected, pin 48,49 with the pin of EEROM chips 2,4LC,256 5,6 with not being connected, and pin 58,59 is respectively at FRAM The pin 6,5 of storage chip FM24CL16A is connected, pin 76,77,78,79 respectively with the pin of FLASH storage chips 5,2,6, 1 is connected.Communication module includes RS-485 wire communications module, LoRa wireless communication modules, bluetooth communication module, and RS-485 is wired TX, RX pin of communication module are connected with the pin of controller module CPU 47,46 respectively, TX, RX of LoRa wireless communication modules Pin is connected with the pin of controller module CPU 99,98 respectively, TX, RX pin of bluetooth communication module respectively with controller The pin 75,74 of module CPU is connected.
Specifically, host voltage signal acquisition module as shown in Figure 5, A phase voltages by resistance BR1, BR2, BR3, BR4, BR44 are divided, and are obtained the reduced output voltage at the both ends resistance BR44, are sent the pin of metering module as shown in Figure 7 to 12,13 and slave interface module, wherein resistance BR44, resistance BR45, capacitance BC36, capacitance BC37 constitute A phase voltages letter Number acquisition Anti-aliasing Filter Circuits, voltage-stabiliser tube BD2 for overvoltage protect;B phase voltages by resistance BR5, BR6, BR7, BR8, BR47 is divided, and is obtained the reduced output voltage at the both ends resistance BR47, is sent the pin 14,15 of metering module as shown in Figure 7 to With slave interface module, wherein resistance BR47, resistance BR49, capacitance BC49, capacitance BC50 constitute B phase voltage signals and adopt The Anti-aliasing Filter Circuits of collection;C phase voltages are divided by resistance BR9, BR10, BR11, BR12, BR51, obtain resistance The reduced output voltage at the both ends BR51 sends the pin 16,17 and slave interface module of metering module as shown in Figure 7 to, wherein Resistance BR51, resistance BR53, capacitance BC53, capacitance BC54 constitute the Anti-aliasing Filter Circuits of C phase voltage signals acquisition.
Host current signal collection module as shown in FIG. 6, can be used current transformer, and current transformer uses open type Or closed type.Wherein, the anode of the secondary output of current transformer 1 connects metering module as shown in Figure 7 after resistance AR5 The pin 4 of RN8302 chips, the cathode of the secondary output of current transformer 1 connect metering as shown in Figure 7 after resistance AR6 The pin 5 of module RN8302 chips, wherein resistance AR11, resistance AR12, capacitance BC3, capacitance BC4 constitute A phase current signals The Anti-aliasing Filter Circuits of acquisition;The anode of the secondary output of current transformer 2 connects as shown in Figure 7 after resistance AR3 The pin 7 of metering module RN8302 chips, the cathode of the secondary output of current transformer 2 connect after resistance AR4 such as Fig. 7 institutes The pin 8 of the metering module RN8302 chips shown, wherein resistance AR9, resistance AR10, capacitance BC5, capacitance BC6 constitute B phases The Anti-aliasing Filter Circuits of current signal acquisition;The anode of the secondary output of current transformer 3, after resistance AR1, connection is as schemed The pin 10 of metering module RN8302 chips shown in 7, the cathode of the secondary output of current transformer 3, after resistance AR2, even Connect the pin 11 of metering module RN8302 chips as shown in Figure 7, wherein resistance AR7, resistance AR8, capacitance BC7, capacitance BC8 Constitute the Anti-aliasing Filter Circuits of C phase current signals acquisition.
As shown in Figure 8,9, 10, the slave interface module of host includes that sampled voltage signal level promotes and follow mould Block, power supply output current limiting switch module and three crystal head jacks, each crystal head jack separately include power supply, voltage With communication three signal circuits, wherein power supply signal circuit is connected with power supply output current limiting switch module, voltage signal circuit and Sampled voltage signal level is promoted and module is followed to be connected, and order circuit is connected with the communication module of host.
Specifically, as shown in figure 8, the slave interface module of the host includes three crystal head jacks, it is preferred to use Three RJ12 jacks, the slave connection of corresponding A phase, B phases, C phases respectively, the pin definition of each RJ12 jacks is consistent, RJ12's Pin 1 is power supply signal, and working power is transmitted for each slave;Pin 2 is separate identification signal, and slave can be with by this signal It identifies the separate a certain phase belonged in A phase, B phase, C phase measured by slave itself, can be used to identify separate configuration error;Pin 3,4 be serial communication signal, realizes that host is interacted with the communication between slave;Pin 5 is public ground wire;Pin 6 will be adopted by host The synchronous voltage signal that collection comes passes to each slave and participates in survey calculation, and three RJ12 jacks transmit A phase, B phase, C phase respectively Synchronous voltage signal.
As shown in figure 9, the sampled voltage signal level is promoted and is followed module to use a reference power supply The pin 1,2 of AME431BAJETA25Z and transport and placing device TLC2274AID, reference power supply are connected, and are connected to resistance ER17 One end, the other end of resistance ER17 is connected respectively to the anode of diode ED3, ED4, ED5, diode ED3, ED4, ED5's Cathode is connected respectively to the pin 3,5,10 of three amplifiers EU3A, EU3B, EU3C, and the pin 1,7,8 of three amplifier EU3 connects respectively Be connected to the pin 6 of A phase, B phase, C phase RJ12 jacks as shown in Figure 8, the pin 3,5,10 of amplifier EU3 be divided into not with resistance ER6, One end of ER10, ER12 is connected, and the other end of resistance ER6, ER10, ER12 draws with host metering module chip RN8302 respectively Foot 16,14,12 is connected, and the pin 2,6,9 of amplifier EU3 is connected with the output pin of EU3 1,7,8 respectively.The module main purpose It is driving and the load capacity for enhancing voltage sampling signal, shares to each slave and use.
As shown in Figure 10, the power supply output current limiting switch module uses ETA6010 chips, the pin 1 of ETA6010 chips It is connected with 3 short circuit of pin, and is connected with one end of filter capacitor EC1, is finally connected with the 5V power supplys output from power module, The other end of filter capacitor EC1 is grounded, and the pin 2 of ETA6010 chips is grounded, and pin 4 connects one end of resistance ER14, resistance The other end of ER14 is grounded, and the output pin 5 of ETA6010 chips is connected with the anode of storage capacitor EC2, storage capacitor EC2's Cathode is grounded, the maximum current of the adjustable limitation 5VCC1 of the resistance value by adjusting ER14, it is therefore an objective to limit slave interface module The maximum operating currenbt of the power supply 5VCC1 conveyed to slave, it is ensured that Electrical Safety.
As shown in figure 11, the measurement control module of the slave uses RN8211B chips, slave current signal collection module The ends L of the Current Transformer Secondary side outlet of use are connected with the pin 10 of RN8211B chips, the outlet of Current Transformer Secondary side N-terminal be connected with the pin 11 of RN8211B chips;Two crystal head jacks of the slave interface module of slave use one 2 The same pin of group RJ12 jacks, 2 groups of RJ12 jacks distinguishes short circuit, and RJ12 jack pins define and host as shown in Figure 8 RJ12 jacks are consistent;The pin 6,7 of RN8211B chips is connected with the pin of RJ12 jacks 6,5 respectively, and RN8211B chips draw Foot 39,40 is connected with the pin of 24LC256 storage chips 7,6 respectively, is stored for slave parameter and measurement data;RN8211B The pin 59 of chip is connected with the pin 2 of program button BK1, the anode of the pin 58 and work light AD1 of RN8211B chips It is connected.
Also, the current signal collection module of slave of the present invention uses current transformer, current transformer to use and open Mouth formula or closed type.Preferably, slave can also include band position limiting pile, and slave is facilitated to be bundled in the cable in tested circuit On.
The present invention also propose a kind of master-slave mode can discrete distribution multi-loop electric energy monitoring method, this method Intrusion Detection based on host With several slaves, this method can be used for the upper of above structure terminal, but be not limited to above structure, specifically include following step Suddenly:
The master-slave mode that step 1, this method utilize can discrete distribution multi-loop electric energy monitoring terminal can at most mount 30 from Machine, host are arranged according to practical situations, and host is carried out by each phase slave interface using flexible cable and each slave Connection.
Step 2, using the voltage signal acquisition module in host by external insulation puncture line clamping from busbar or some The voltage signal of three-phase circuit outlet acquisition power grid, the voltage signal for acquiring tested circuit are transmitted to meter after being depressured and being filtered It measures module and participates in operation result of measurement, the electricity in circuit can also be tested by the current signal collection module acquisition host place that host carries Signal is flowed, and combines the voltage signal of host acquisition to carry out electric flux and calculates the monitoring data for obtaining host.Meanwhile it can will acquire The voltage signal in tested circuit passes through slave interface module transfer to each slave.
Step 3, the slave interface module of each slave obtain the voltage signal from host, and are carried by slave Current signal collection module acquisition slave where be tested circuit current signal, by metering control module according to the voltage believe Number and current signal carry out electric flux and calculate the measurement data for obtaining each slave, and the measurement data of acquisition is stored and is passed through Slave interface module transfer is by host.
Step 4, the host carry out configuration combination to each slave, are mapped to several virtual three-phase circuits and measure eventually If end and/or dry Unit phases circuit measuring terminals, the measurement data of each slave transmission received by slave interface module combine The monitoring data for obtaining corresponding to virtual three-phase or single-phase circuit measuring terminals, to realize that the electric flux in multiple circuits monitors.
The host carries out configuration combination according to practical situations, by each slave, and slave is registered to host memory Contingency table in Virtual three-phase or single-phase circuit measuring terminals, that is, be mapped to several virtual three-phase circuits monitoring terminals Terminal is monitored with Ruo Gan Ge Unit phases circuit, and establishes a contingency table, as shown in figure 12.The address of slave is automatic by host It generates and configures, the measurement data of host is transferred to by slave that is, is combined into the measurement data of corresponding Virtual Monitoring terminal, Realize that the electric flux monitoring in multiple circuits, Virtual Monitoring terminal can be set virtual address, master system by with The wired or wireless connection that host is set up is communicated with Virtual Monitoring terminal, obtains the data of Virtual Monitoring terminal.It is main After configuring Virtual Monitoring terminal inside machine, need slave and Virtual Monitoring terminal being associated, such as:By some from Organ is linked to the A phases of No. 1 Virtual Monitoring terminal, can be downloaded slave operation in host human-computer interaction module, press volume at this time Journey button BK1, triggering work light AD1 become period flicker by being always on, and so that slave is entered programming state, host passes through crystal Head jack sends the address setting that broadcasting packet first realizes slave to slave, is only in the slave response report of programming state Text is simultaneously and host carries out communication interaction, and after completing the setting of slave address, slave work light, which becomes again, to be always on or according to logical Rhythm flicker is interrogated, host continues to carry out other parameters configuration, the configuration process of other slaves to the slave for setting up address It is similar.When the host crystal head that the separate and slave actual physics for the Virtual Monitoring terminal that slave is associated with are connected to is inserted Hole it is affiliated separate inconsistent when, host will produce alarm and be prompted.
In addition, the host shape in the present invention is as shown in figure 13, host includes RS- to the communication interface of master system 485 wire communications, LoRa wireless telecommunications, bluetooth communication, master system can be selected according to the degree easy for construction of engineering site RS-485 wire communications or LoRa wireless communication modes carry out communication interaction;There is unique Quick Response Code identification label in host front, Mobile phone open bluetooth carries out barcode scanning using the mating APP application software with user right control to host, and host and mobile phone are Can establish bluetooth connection, realize to the master-slave mode of the present invention can discrete distribution multi-loop electric energy monitoring terminal relevant parameter It consults and is arranged.
The shape from the outside of this example is as shown in figure 14, and slave uses the design of 8 side shape of cross section, it is therefore intended that reduction slave The space that inside does not use more adapts to the narrow ring of installation space to reduce mounting height of the slave in project installation Border.The measurement current range of slave has two kinds of specifications of 75A and 5A, wherein 75A specifications directly to measure tested circuit, and 5A specifications measure The secondary circuit of external great current mutual inductor measures and is tested circuit indirectly.The current transformer of slave may be selected closed type and open Mouth formula two ways.
Master-slave mode can typical case of the multi-loop electric energy monitoring terminal in engineering of discrete distribution can be:At one One host, the total input-wire circuit of the monitoring electronic box of host are installed, the slave of 75A specifications monitors each outlet and returns in floor electronic box Road, the transmission line circuit quantity that the quantity of the slave of installation monitors as needed determine that slave is bundled in tested by using band On circuit, slave is subjected to connecting hand in hand with phase using 6 prefabricated core Telephone Cables, host is finally connected to and corresponds to phase RJ12 jacks, voltage signal are derived from the insulation puncture line clamping being crimped on wire inlet loop, and RS- is used with host computer communication connection 485 wire communications or LoRa wireless communication modes.
Master-slave mode can typical case of the multi-loop electric energy monitoring terminal in engineering of discrete distribution can also be:With In the low-voltage power distribution room of family substation, a low-voltage distribution cabinet installs a host, each of multiple outlet drawers of power distribution cabinet External current transformer is assembled on outlet circuit, the secondary side circuit of external current transformer forms closed loop, 5A nearby Specification slave, which is mounted on external Current Transformer Secondary side loop, realizes that measurement, the quantity of the slave of installation are as needed indirectly The transmission line circuit quantity of monitoring determines, slave is carried out connecting hand in hand with phase using 6 prefabricated core Telephone Cables, is finally connected The RJ12 jacks of phase are corresponded to host, voltage signal is derived from the spare drawer of some low-voltage distribution cabinet in entire low-voltage power distribution room Outlet, the host on each low-voltage distribution cabinet can share this voltage signal, and RS-485 cable modems are used with host computer communication connection News or LoRa wireless communication modes, when using RS-485 wire communication modes, the RS-485 of the host on each low-voltage distribution cabinet Wire communication mouth can be connected on same communication bus, and integral installation structure is as shown in figure 15.
To sum up, host of the invention can independent operating, realize and the electric flux in the 1 single-phase circuit in road three-phase circuit or 3 tunnels supervised It surveys, the function of the transmission of bus integrated power supply, voltage signal transmission and principal and subordinate's inter-machine communication between host and slave, slave acquisition It is measured the current signal in circuit, in conjunction with the voltage signal through decompression processing obtained from bus, completes the survey to being tested circuit Amount calculates, and host is transferred data to by bus communication, and the integration management of measurement data is completed by host, realizes to multiple three The electric flux in phase circuit or single-phase circuit monitors.It avoids the puncture of the multiple spot in especially transformation project and takes electric construction, both improved Transformation safety, and solve the problems, such as transformation scene power-off constructional difficulties, while reducing the difficulty of circuit combing and applying Work period, the minimum for supporting slave volume well design and save hardware cost, allow slave in subbranch circuit It is applied well in measurement.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations Mode within the knowledge of a person skilled in the art can also be without departing from the purpose of the present invention It makes a variety of changes.

Claims (8)

1. a kind of master-slave mode can discrete distribution multi-loop electric energy monitoring terminal, including host and several slaves, feature It is:
The host includes current signal collection module, voltage signal acquisition module, metering module, power module, controller mould Block, communication module, human-computer interaction module, slave interface module, the input terminal of wherein metering module are adopted with current signal respectively The output end of collection module is connected with an output end of voltage signal acquisition module, and the output end of metering module and controller mould Block is connected;The controller module is also respectively connected with communication module, human-computer interaction module, slave interface module;And institute Another output end for stating voltage signal acquisition module is connected with power module, slave interface module respectively, and power module with Slave interface module is connected;
Each slave includes current signal collection module, measures control module, slave interface module, wherein current signal The output end of acquisition module is connected with control module is measured, and measures control module and be connected with slave interface module;
Also, every interfaces of the slave interface module of the host respectively with the slave interface module of one of slave An interface be connected, be connected slave slave interface module another interface and next slave slave interface Any one interface of module is connected.
2. according to claim 1 master-slave mode can discrete distribution multi-loop electric energy monitoring terminal, it is characterised in that:It is described The voltage signal acquisition module of host includes three voltage signal acquisition circuits, and wherein each voltage signal acquisition circuit includes Connected reduction voltage circuit and filter circuit.
3. according to claim 1 master-slave mode can discrete distribution multi-loop electric energy monitoring terminal, it is characterised in that:It is described The slave interface module of host include sampled voltage signal level promoted and follow module, power supply output current limiting switch module and Three crystal head jacks, each crystal head jack separately include three power supply, voltage and communication signal circuits, power supply letter Number circuit is connected with power supply output current limiting switch module, and voltage signal circuit promotes and follow mould with sampled voltage signal level Block is connected and order circuit is connected with the communication module of host.
4. master-slave mode as described in claim 1 can discrete distribution multi-loop electric energy monitoring terminal, it is characterised in that:It is described The slave interface module of slave includes two crystal head jacks, and each crystal head jack includes power supply, voltage and communication three Signal circuit, electric power loop, voltage circuit and the order circuit of described crystal head jack respectively with another crystal head Electric power loop, voltage circuit and the order circuit of jack are connected in parallel.
5. according to claim 1 master-slave mode can discrete distribution multi-loop electric energy monitoring terminal, it is characterised in that:It is described Band position limiting pile for being fixed in tested return cable is set on each slave.
6. a kind of master-slave mode can discrete distribution multi-loop electric energy monitoring method, this method Intrusion Detection based on host and several slaves, It is characterized by comprising the following steps:
It is acquired using host and is tested the voltage signal in circuit and transmits it to each slave;
Each slave is tested the electricity in circuit where the slave according to the voltage signal and slave acquisition from host of acquisition Signal is flowed, electric flux is carried out and calculates the measurement data for obtaining each slave, and the measurement data of acquisition is stored and transmitted to master Machine;
The host carries out configuration combination to each slave, is mapped to several virtual three-phase circuit measuring terminals and/or several A Unit phases circuit measuring terminals, the measurement data transmitted by each slave, which combines to obtain, corresponds to virtual three-phase or the measurement of single-phase circuit The monitoring data of terminal, to realize that the electric flux in multiple circuits monitors.
7. according to claim 6 master-slave mode can discrete distribution multi-loop electric energy monitoring method, it is characterised in that:It is described Method further includes being tested the current signal in circuit where host acquisition host, and the voltage signal of host acquisition is combined to carry out electricity Energy balane obtains the monitoring data of host.
8. according to claim 6 master-slave mode can discrete distribution multi-loop electric energy monitoring method, it is characterised in that:It is described It includes that slave is registered to Virtual three-phase or list in the contingency table of host memory that host carries out configuration combination to each slave Phase circuit measuring terminals, wherein slave address are automatically assigned and the virtual three-phase or single-phase circuit measuring terminals Address is configured and is stored in host.
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