CN206282422U - The switching power unit and concentrator of integrated broadband route - Google Patents

The switching power unit and concentrator of integrated broadband route Download PDF

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Publication number
CN206282422U
CN206282422U CN201621445541.6U CN201621445541U CN206282422U CN 206282422 U CN206282422 U CN 206282422U CN 201621445541 U CN201621445541 U CN 201621445541U CN 206282422 U CN206282422 U CN 206282422U
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China
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circuit
coupled
unit
broadband
route
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高攀
陈顺飞
杨飞
何佳
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WUHAN SHENGFAN ELECTRONICS STOCK CO Ltd
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WUHAN SHENGFAN ELECTRONICS STOCK CO Ltd
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Abstract

The utility model provides the switching power unit and concentrator of a kind of integrated broadband route, it is related to power information to gather field, it is applied to the concentrator in power user power consumption information acquisition system, concentrator also includes MCU administrative units, power user power consumption information acquisition system also includes external routing unit, and external routing unit is coupled with MCU administrative units.Wherein, external routing unit is any one during arrowband route, wireless routing or arrowband route with wireless bimodulus.The switching power unit of integrated broadband route includes switching power supply and broadband routing unit.Switching power supply is coupled with broadband routing unit.Switching power supply and broadband routing unit are coupled with MCU administrative units.The switching power unit and concentrator of the integrated broadband route that the utility model is provided, with the function based on power wire broadband carrier communication, a concentrator is realized jointly with the external routing unit communicated based on non-broadband ZAP while include at least two communication means of broadband connections.

Description

The switching power unit and concentrator of integrated broadband route
Technical field
The utility model is related to power consumer electricity consumption information to gather field, more particularly to the switch that a kind of integrated broadband route Supply unit and concentrator.
Background technology
The local communication scheme of current power user power utilization information acquisition system has single mode carrier communication, single mode channel radio Letter, by narrowband carrier and the wireless dual mode communication for constituting, concentrator is as the nucleus equipment in collection network, it is necessary to pass through external Routing unit realizes communication connection.Wherein, the type of external routing unit has broadband to route, arrowband route, wireless routing or double Mould route, and bimodulus route is that arrowband adds wireless routing.
The uniform requirement of State Grid Corporation of China's docking port form and Dimensions is limited to, be there is no route comprising broadband at present Bimodulus or multimode routing unit, and the mode of operation of single mode routing unit is single, also exists when situation is more complicated at the scene and adopts The collection problem that effect is undesirable, collecting efficiency is low.
Utility model content
In view of this, the purpose of this utility model is the switching power unit and concentration for providing a kind of integrated broadband route Device, to improve above mentioned problem.
In a first aspect, the utility model preferred embodiment provides a kind of switching power unit of integrated broadband route, application Concentrator in power user power consumption information acquisition system, the concentrator also includes MCU administrative units, the power consumer Power information acquisition system includes external routing unit, and the external routing unit is coupled with the MCU administrative units.Wherein, The external routing unit is any one during arrowband route, wireless routing or arrowband route with wireless bimodulus.The collection Switching power unit into broadband route includes switching power supply and broadband routing unit, the switching power supply and institute State broadband routing unit coupling;The switching power supply and the broadband routing unit with the MCU administrative units coupling Close.
Second aspect, the utility model preferred embodiment provides a kind of concentrator, is applied to power consumer electricity consumption information and adopts Collecting system, the concentrator includes the switching power unit of MCU administrative units and above-mentioned integrated broadband route, the electric power User power utilization information acquisition system includes external routing unit, the switching power unit of integrated broadband route and described outer Routing unit is put to be coupled with the MCU administrative units.
The beneficial effect of the utility model embodiment is:
The switching power unit and concentrator of the integrated broadband route that the utility model embodiment is provided, with broadband connections Function, transmission of broadband communications efficiency high, transmission are more stablized.The external routing unit structure communicated with based on non-broadband carrier system Into broadband connections plus another even two kinds of bimodulus or even the communication mode of three moulds, a concentrator is realized simultaneously Include at least two communication modes of broadband connections.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, below will be to be used needed for embodiment Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also Other related accompanying drawings are obtained with according to these accompanying drawings.
Fig. 1 is that the collection network structure of the existing concentrator for being applied to power user power consumption information acquisition system is illustrated Figure;
The structural representation of the power user power consumption information acquisition system that Fig. 2 is provided for the utility model preferred embodiment;
A kind of structure of the switching power unit of integrated broadband route that Fig. 3 is provided for the utility model preferred embodiment is shown It is intended to;
The input protection circuit of the switching power supply that Fig. 4 is provided for the utility model preferred embodiment, the first rectification filter The structural representation of wave circuit and part over-voltage detection circuit;
The part over-voltage detection circuit of the switching power supply that Fig. 5 is provided for the utility model preferred embodiment, electric current are adopted The structural representation of sample feedback circuit, voltage sample feedback circuit, ON-OFF control circuit and Partial DC chopper circuit;
It is the Partial DC chopper circuit of the switching power supply that Fig. 6 is provided for the utility model preferred embodiment, second whole The structural representation of the power supply circuit of stream filter circuit and ON-OFF control circuit;
First signal coupling circuit of the broadband routing unit that Fig. 7 is provided for the utility model preferred embodiment, the first filter The structural representation of wave circuit;
The secondary signal coupled circuit configuration of the broadband routing unit that Fig. 8 is provided for the utility model preferred embodiment is illustrated Figure;
3rd signal coupling circuit structural representation of the broadband routing unit that Fig. 9 is provided for the utility model preferred embodiment Figure;
The zero cross detection circuit structural representation of the broadband routing unit that Figure 10 is provided for the utility model preferred embodiment.
Icon:The external routing units of 100-;200- concentrators;The switching power unit of 300- integrated broadbands route;400- Switching power supply;410- input protection circuits;The current rectifying and wave filtering circuits of 420- first;430- over-voltage detection circuits;440- is switched Control circuit;450- DC chopper circuits;460- current sample feedback circuits;The current rectifying and wave filtering circuits of 470- second;480- voltages Sampling feedback circuit;490- output voltage stabilizing circuits;500- broadbands routing unit;510- voltage conversion circuits;520- communication interfaces Circuit;530- governor circuits;The filter circuits of 540- first;550- signal coupling units;560- zero cross detection circuits;600-MCU Administrative unit;700- power user power consumption information acquisition systems;710- main websites.
Specific embodiment
Power user power consumption information acquisition system, is realized to meter or the work(of collector remote meter reading by concentrator Energy.Concentrator as power user power consumption information acquisition system nucleus equipment, by external routing unit and meter or collection Device realizes communication.Currently, the main flow local communication scheme of power user power consumption information acquisition system is divided into power line carrier communication And two kinds of radio communication.
Wherein, power line carrier communication is divided into bandwidth carrier communication and arrowband is carried again by the use of power line as transmitting device Wave communication.Compared with narrowband carrier communication, with receiving, noise jamming is smaller, signal transmission is stablized relatively, transmission for bandwidth carrier communication The advantages of speed is high.
Accordingly, external routing unit is also classified into broadband routing unit to realize the broadband of collector or meter and concentrator Carrier communication;Arrowband routing unit is communicated with realizing collector or meter with the narrowband carrier of concentrator;Wireless routing unit with Realize the radio communication of collector or meter and concentrator;In addition, also can simultaneously realize narrow band communication and radio communication Bimodulus routing unit.
The uniform requirement of State Grid Corporation of China's docking port form and Dimensions is limited to, be there is no at present comprising broadband road By bimodulus or multimode routing unit, and the mode of operation of external single mode routing unit is single, can only realize that single mode arrowband is carried One kind in wave communication, the communication of single mode bandwidth carrier or single mode wireless communication these three communication modes;Bimodulus unit can be simultaneously Realize narrowband carrier communication and two kinds of communication modes of radio communication.
But in actual application, because field condition is usually relatively complex.Possibly cannot only with a concentrator The power information of all meters in whole network is collected simultaneously.
For the objective shortcoming of the clear above-mentioned prior art of explanation, illustrated below in conjunction with Fig. 1:As shown in figure 1, M1 ~M9 represents meter, wherein, M1, M2 and M3 are located at region 1, and M4, M5 and M6 are located at region 2, and M7, M8 and M9 are located at region 3.
Example one:It is assumed that the meter in region 1 is only capable of being communicated successfully by narrowband carrier mode, the meter in region 2 is only capable of Communicated successfully by bandwidth carrier mode, the meter in region 3 is only capable of wirelessly communicating successfully.When in practical application When being included in user power utilization information gathering network but not only having region 2, due to there is no integrated broadband in the communication module scheme of Fig. 1 The bimodulus unit of routing unit, more without three mould schemes.Therefore, no matter using which kind of scheme, it is clear that cannot only with a collection Middle device collects the power information of meter in whole network simultaneously.
Example two:It is assumed that no matter the meter in region 1 can be communicated successfully by which kind of mode, the meter in region 2 is only capable of Wirelessly communicate successfully, when the power information collection network only inclusion region 1 in practical application and region 2, to lead to Collection of the concentrator realization to all meters in network is crossed, can only be route using bimodulus, and bandwidth carrier is used as communication speed The most fast local communication scheme of rate, fails to be applied in this example.
In a word, the bimodulus comprising bandwidth carrier function is there is no to route in current dual mode communication scheme, it is impossible in ad hoc network Ensure to ensure collecting efficiency while collection success rate under environment.
In view of this, in order to overcome above-mentioned deficiency, the utility model embodiment to provide a kind of opening for integrated broadband route Powered-down source device and concentrator.The switching power unit of the integrated broadband route is applied to power consumer electricity consumption information collection The concentrator of system, concentrator has broadband connections function.It is long-range right not only can independently to be realized by broadband routing unit The collection of data;Bimodulus or multi-mode communication can also be bonded with the external routing unit communicated based on non-broadband carrier system Scheme, realizes while the power information collection of the meter to the meter or multi-mode communication scheme of different communication scheme.
The switching power unit and concentrator of the integrated broadband route that will be provided the utility model embodiment below enter The detailed elaboration of row.To make the purpose, technical scheme and advantage of the utility model embodiment clearer, will be new with reference to this practicality Accompanying drawing in type embodiment, is clearly and completely described to the technical program.Obviously, described embodiment is this practicality New a part of embodiment, rather than whole embodiments.
Power user power consumption information acquisition system is by the collection to distribution transformer and the electricity consumption data of user terminal And analysis, realize the functions such as power monitoring, load management, be finally reached automatic data logging, use electricity in off-peak hours, the purpose such as power utility check.
Refer to Fig. 2, in the utility model embodiment, power user power consumption information acquisition system 700 include main website 710, The equipment such as concentrator 200, collector and meter (intelligent electric meter).Concentrator 200 is single by external route as mediation device Unit 100 is communicated with collector and meter, and is communicated with main website 710.
Main website 710 is used to be acquired the power information of each information gathering point.
In the utility model embodiment, the external routing unit 100 is arrowband route, wireless routing or arrowband and nothing Line bimodulus route in any one.
Concentrator 200 includes the switching power unit 300 and MCU (Microprogrammed of integrated broadband route Control Unit) administrative unit 600, MCU administrative units 600 are used to be coupled with the external routing unit 100, with by outer Put routing unit 100 and realize local communication with meter or collector.
Wherein, the switching power unit 300 of integrated broadband route includes switching power supply 400 and broadband routing unit 500.Switching power supply 400 is coupled with broadband routing unit 500, and switching power supply 400 and broadband routing unit 500 Coupled with MCU administrative units 600 respectively.
Fig. 3 is referred to, is a kind of switching power unit of integrated broadband route that the utility model preferred embodiment is provided 300 structural representation.
Wherein, switching power supply 400 includes input protection circuit 410, the first current rectifying and wave filtering circuit 420, overvoltage detection Circuit 430, ON-OFF control circuit 440, DC chopper circuit 450, current sample feedback circuit 460, the second current rectifying and wave filtering circuit 470th, voltage sample feedback circuit 480 and output voltage stabilizing circuit 490.
Wherein, input protection circuit 410 is coupled with the first current rectifying and wave filtering circuit 420;ON-OFF control circuit 440 is respectively with One current rectifying and wave filtering circuit 420, over-voltage detection circuit 430, DC chopper circuit 450 are coupled, current sample feedback circuit 460 and Voltage sample feedback circuit 480 is coupled;First current rectifying and wave filtering circuit 420 is coupled with over-voltage detection circuit 430;DC chopper circuit 450 couple with the current rectifying and wave filtering circuit 470 of current sample feedback circuit 460 and second respectively;Second current rectifying and wave filtering circuit 470 is distinguished Coupled with voltage sample feedback circuit 480 and output voltage stabilizing circuit 490;Output voltage stabilizing circuit 490 and broadband routing unit 500 Coupling.
Foregoing circuit module will be further illustrated below:
Fig. 4 is referred to, input protection circuit 410 includes the exchange electric connecting terminals and anti-lightning strike wave of 3 phase 220/380V Gush circuit.
Wherein, the exchange electric connecting terminals of 3 phase 220/380V be used for receive AC network three-phase ac signal and to AC network sending signal.
Power user power consumption information acquisition system in actual applications, due to feelings such as thunderbolt, the startups of large-scale electric equipment Condition, easily causes the surge change of voltage in power network.Therefore using lightning prevention surge circuit as input protection circuit 410, can Successfully manage overvoltage and surge impact problem.Lightning prevention surge circuit include the first piezo-resistance RV1, the second piezo-resistance RV2, 3rd piezo-resistance RV3, the first wire resistor R1, the second wire resistor R2, the 3rd wire resistor R3 and the 4th resistance R4;The The A phase lines of AC network are coupled to one end of the first wire resistor R1 in one end of one piezo-resistance RV1;Second piezo-resistance The B phase lines of AC network are coupled to one end of the second wire resistor R2 in one end of RV2;One end of 3rd piezo-resistance RV3 With the C phase lines that AC network is coupled in one end of the 3rd wire resistor R3.First piezo-resistance RV1, the second piezo-resistance RV2 And the 3rd the other end of piezo-resistance RV3 coupled with binding post N, the other end and the 4th resistance of the 3rd piezo-resistance RV3 One end coupling of R4.
What input protection circuit 410 was received is three-phase alternating current, it is necessary to the first current rectifying and wave filtering circuit 420 is converted into Galvanic current.First current rectifying and wave filtering circuit 420 includes that the first rectification circuit and the second filter circuit and anti-electromagnetism are dry Disturb circuit.
Anti- electromagnetic interference circuit is used to intercept the electromagnetic interference between AC network and the rear class of switching power supply 400.It is anti- Electromagnetic interference circuit includes the first filter capacitor C1, the first common mode inductance L1 and the second differential mode inductance L2.First filter capacitor One end of C1 couples with the first end of the first common mode inductance L1 and the other end of the 4th resistance R4 respectively, the first common mode inductance L1 The second end coupled with one end of the second differential mode inductance L2.
First rectification circuit includes the first diode D1, the second diode D2 and the 3rd diode D3.First diode The anode of D1 is coupled with the other end of wire resistor R1, and negative electrode is coupled with the 3rd end of the first common mode inductance L1;Second diode The anode of D2 is coupled with the other end of the second wire resistor R2, and negative electrode is respectively with the first diode D1's and the 3rd diode D3 Negative electrode is coupled;The anode of the 3rd diode D3 is coupled with the other end of the 3rd wire resistor R3, negative electrode and the first filter capacitor C1 The other end coupling.
Second filter circuit includes the second electric capacity C2 and the 3rd electric capacity C3 in parallel.For filtering off the first rectification circuit The ripple of output voltage.One end of second electric capacity C2 couples with one end of the 3rd electric capacity C3, the other end of the second electric capacity C2 and The 4th end coupling of one common mode inductance L1, the other end of the 3rd electric capacity C3 is coupled with the other end of the second differential mode inductance L2.
Because the user of AC network is more, electrical equipment wide variety, the unstable of voltage is easily caused, height is neglected suddenly Low voltage can be impacted to concentrator.In order to voltage change than it is larger when it is accurate detection and be controlled, opening Over-voltage detection circuit 430 is integrated with powered-down source unit 400.One end of over-voltage detection circuit 430 couples with the second filter circuit, Other end is coupled with ON-OFF control circuit 440.
Refer to Fig. 4 and Fig. 5, over-voltage detection circuit 430 include the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11, the 13rd resistance R13, the 14th resistance R14, 4th electric capacity C4, the 7th electric capacity C7, the first voltage-stabiliser tube ZD1, the first triode VT1 and the second triode VT2.Wherein, first Triode VT1 is PNP triode, and the second triode VT2 is NPN triode.One end of 5th resistance R5 respectively with the second electric capacity One end coupling of the other end of C2 and the 8th resistance R8, the other end of the 5th resistance R5 is coupled with one end of the 6th resistance R6; One end of 7th resistance R7 couples with the other end of the 6th resistance R6 and one end of the 4th electric capacity C4 respectively;4th electric capacity C4's One end couples with the reference voltage end of the first voltage-stabiliser tube ZD1, other end ground connection;The other end of the 8th resistance R8 is electric with the 9th respectively Hinder the emitter stage coupling of one end and the first triode VT1 of R9;The other end of the 9th resistance R9 is respectively with the tenth resistance R10's The negative electrode coupling of one end and the first voltage-stabiliser tube ZD1;The plus earth of the first voltage-stabiliser tube ZD1;The other end of the tenth resistance R10 with The base stage coupling of the first triode VT1;The colelctor electrode of the first triode VT1 respectively with the base stage of the second triode VT2 and 11 resistance R11 one end couple;The emitter stage of the second triode VT2 respectively with the other end and the 5th of the 11st resistance R11 One end coupling of electric capacity C5, the colelctor electrode of the second triode VT2 one end respectively with the 13rd resistance R13 and the 14th resistance One end coupling of R14;The other end ground connection of the 14th resistance R14;One end of 6th electric capacity C6, one end of the 5th electric capacity C5 and One end of 7th electric capacity C7 is grounded;The other end of the 5th electric capacity C5 is coupled with one end of the 12nd resistance R12;6th electric capacity C6 The other end coupled with the other end of the 12nd resistance R12.
Fig. 5, the first chip U1, the 4th diode D4 and its surrounding component composition ON-OFF control circuit 440 are referred to, is used for According to the signal that voltage sample feedback circuit 480 and current sample feedback circuit 460 feed back, DC chopper circuit 450 is controlled In the first FET Q1 break-make frequency.The GND pin ground connection of the first chip U1, the other end coupling FB of the 6th electric capacity C6 draws Pin, the other end of the 7th electric capacity C7 and the other end of the 13rd resistance R13 are coupled to RT pins, and GATE pins are respectively with the tenth One end coupling of one end and the 16th resistance R16 of five resistance R15;The other end and the 4th diode of the 15th resistance R15 The negative electrode coupling of D4;The anode of the 4th diode D4 is coupled with the other end of the 16th resistance R16, the other end of R16 and the tenth One end coupling of seven resistance R17.
19th resistance R19, the 8th electric capacity C8, the 18th resistance R18, the 20th resistance R20 and the 21st resistance R21 constitutes current sample feedback circuit 460.Current sample feedback circuit 460 is used to gather and flows through the of DC chopper circuit 450 The current value signals of one FET Q1, and feed back to ON-OFF control circuit 440.The other end of the 17th resistance R17 respectively with One end coupling of one end, one end of the 20th resistance R20 and the 21st resistance R21 of the 18th resistance R18;8th electric capacity One end of C8 couples with the other end of the 18th resistance R18 and one end of the 19th resistance R19 respectively;19th resistance R19, the 8th electric capacity C8, the other end of the 20th resistance R20 and the 21st resistance R21 are grounded.
Voltage sample feedback circuit 480 includes the second optocoupler U2, the second voltage-stabiliser tube ZD2 and peripheral devices.To The DC voltage of the output of two current rectifying and wave filtering circuit 470 is sampled, and it is converted into corresponding opening with the deviation of reference voltage Pass amount is exported to ON-OFF control circuit 440.The emitter stage of the triode in the second optocoupler U2 and one end of the 6th electric capacity C6 Coupling, colelctor electrode is coupled with the FB pins of the first chip U1;The anode and the 22nd of the diode in the second optocoupler U2 One end coupling of resistance R22, negative electrode one end respectively with the 23rd resistance R23, one end of the 9th electric capacity C9 and second are steady The negative electrode coupling of pressure diode ZD2;The other end of the 22nd resistance R22 respectively with the other end of the 23rd resistance R23 with And the 5th inductance L5 one end coupling, one end of the 24th resistance R24 couples with the other end of the 9th electric capacity C9;24th The other end of resistance R24 one end, the reference voltage end and second of the second voltage-stabiliser tube ZD2 respectively with the 25th resistance R25 One end coupling of 16 resistance R26;The other end of the other end of the 25th resistance R25 coupled to the 5th inductance L5;Second is steady The other end of the anode of pressure pipe ZD2 and the 26th resistance R26 is grounded.
Refer to Fig. 5 and Fig. 6, DC chopper circuit 450 it is main by the first FET Q1, high frequency transformer T1 and RCD absorbing circuits are constituted.
The grid of the first FET Q1 other end respectively with the 16th resistance R16, the 4th diode D4 anode with And the 17th resistance R17 one end coupling, the of the drain electrode of the first FET Q1 and the first side winding of high frequency transformer T1 Five Same Name of Ends are coupled, the source electrode of the first FET Q1 and the 21st resistance R21 one end, the 20th resistance R20 one end and One end coupling of the 18th resistance R18.
28th resistance R28, the tenth electric capacity C10, the 5th diode D5, the 3rd differential mode inductance L3 constitute RCD and absorb electricity Road;Tenth electric capacity C10 and the 28th resistance R28 are in parallel, one end one end respectively with the 5th resistance R5 and high frequency transformation The 3rd Same Name of Ends coupling of the first side winding of device T1, the other end is coupled with one end of the 3rd differential mode inductance L3, the 3rd differential mode electricity The other end for feeling L3 is coupled with the negative electrode of the 5th diode D5.The anode of the 5th diode D5 and the primary side of high frequency transformer T1 The 5th Same Name of Ends coupling of winding.
3rd voltage-stabiliser tube ZD3, the 29th resistance R29, the 11st electric capacity C11, the 12nd electric capacity C12, the 30th resistance R30 and the 6th diode D6 constitutes the power supply circuit of ON-OFF control circuit 440, for being powered to the first chip U1;The Three voltage-stabiliser tube ZD3, the 11st electric capacity C11 and the 12nd electric capacity C12 parallel coupleds, the negative electrode and second of the 3rd voltage-stabiliser tube ZD3 One end coupling of 19 resistance R29, the other end of the 29th resistance R29 is coupled with one end of the 5th resistance R5, the 12nd electricity The one end for holding C12 couples with one end of the 30th resistance R30, the other end of the 30th resistance R30 and the moon of the 6th diode D6 Pole is coupled, and the anode of the 6th diode D6 is coupled with the 6th Same Name of Ends of the first side winding of high frequency transformer T1, the 3rd voltage stabilizing The anode of pipe ZD3, the 11st electric capacity C11 one end and the 12nd electric capacity C12 other ends are grounded.
7th diode D7, the 8th diode D8 and the 9th diode D9 are constituted in the second current rectifying and wave filtering circuit 470 Second rectification circuit, the alternating current for being exported to T1 carries out rectification;The anode of the 7th diode D7 is with high frequency transformer T1's The second Same Name of Ends coupling of secondary side winding;The anode of the 8th diode D8 and the tenth of the secondary side winding of high frequency transformer T1 Four Same Name of Ends are coupled;The anode of the 9th diode D9 is coupled with the 9th Same Name of Ends of the secondary side winding of high frequency transformer T1.
Refer to Fig. 6, the 13rd electric capacity C13, the 14th electric capacity C14, the 15th electric capacity C15 and the 16th electric capacity C16 The 3rd filter circuit is constituted Deng electric capacity, it is straight after being respectively used to being processed through the rectification circuit in the second current rectifying and wave filtering circuit 470 Stream electricity is filtered.
Output voltage stabilizing circuit 490 is mainly made up of the 3rd voltage stabilizing chip U3, the 4th voltage stabilizing chip U4 and peripheral devices, is used for The DC voltage value and power of the output of the second current rectifying and wave filtering circuit 470 are adjusted or stablize, the output of output voltage stabilizing circuit 490 is defeated respectively Go out 5V and 12V DC voltages, wherein voltage conversion circuit 510 of the 12V voltage outputs to bandwidth carrier unit all the way.
The switching power unit 300 of the integrated broadband route that the utility model preferred embodiment is provided is used to receive alternating current The broadband carrier signal of input, and the broadband carrier signal treatment according to default wideband protocol to being received are netted, to obtain The effective information entrained by broadband carrier signal is stated, and broadband carrier signal is exported to AC network.Not only can be by width The long-range collection to data is independently realized with routing unit 500;Can also with based on non-broadband ZAP communicate it is external Routing unit 100 is bonded bimodulus or multi-mode communication scheme, realizes meter or multi-mode communication simultaneously to different communication scheme The power information collection of the meter of scheme.Broadband routing unit 500 will be introduced below:
Fig. 3 is referred to, broadband routing unit 500 includes voltage conversion circuit 510, communication interface circuit 520, governor circuit 530th, the first filter circuit 540, signal coupling unit 550 and zero cross detection circuit 560.
Voltage conversion circuit 510 is coupled with switching power supply 400, communication interface circuit 520 and MCU administrative units 600 Coupling;Signal coupling unit 550 and zero cross detection circuit 560 are coupled with AC network.Voltage conversion circuit 510, communication connect Mouth circuit 520, the filter circuit 540 of zero cross detection circuit 560 and first are coupled with governor circuit 530;First filter circuit 540 couple with signal coupling unit 550.
The 12V voltage conversions that switching power supply 400 is exported that voltage conversion circuit 510 is used to receive are broadband road Specification as required by other circuit normal works in unit 500.
Signal coupling unit 550 is used to realize broadband signal mutually turning between governor circuit 530 and AC network Change.Including the first signal coupling circuit, secondary signal termination power and the 3rd signal coupling circuit;First signal coupling circuit Coupled with the A phase lines of AC network, to receive the A phase signals of the AC network or the A circuitry phases transmission to AC network Signal;Secondary signal termination power is coupled with the B phase lines of the AC network, with receive AC network B phase signals or to The B phase line sending signals of the AC network;3rd signal coupling circuit is coupled with the C phase lines of AC network, to receive The C phase signals of AC network or the C phase line sending signals to the AC network.
Refer to Fig. 7, be the utility model preferred embodiment broadband routing unit 500 the first signal coupling circuit and The structural representation of the first filter circuit.A and N are respectively A phases phase line and zero line pin, and the 39th resistance R101 is power electricity Resistance, for protecting late-class circuit;39th electric capacity C101 is ceramic disc capacitor, is disturbed for anti-harmonic wave and protection late-class circuit; Second transformer T2 is coupling transformer, and the winding between 1,2 taps is receiving coil, and the winding between 3,4 taps is transmit coil, 5th, the winding between 6 taps is exchange forceful electric power coil;When receiving signal, governor circuit 530 enables pin RXA_EN and puts to A Phase Receivers High level so that first switch pipe VT105, second switch pipe VT106 emitter junction positively biaseds, when corresponding line has high level signal Switching tube is turned on, switching tube cut-off when low level or no signal, so just realizes the letter that docking collection of letters coupling coil is received Number switch control, from the 40th resistance R116, the 41st electric capacity C115 of resistance R117 to the 40th, the 41st electric capacity Resistance, inductance between C116, electric capacity constitute the first filter circuit 540, and the signal to receiving is filtered;Sending signal When, governor circuit 530 enables pin RXA_EN and sets low level to A Phase Receivers, A Phase Receiver passages is closed, while sent to A phases making Energy pin TXA_EN puts high level so that the 5th triode VT101 conductings, the 6th triode VT102 are inverted, in the 7th triode The base stage of VT103 and the 8th triode VT104 produces the potential of some strength, VINA and VINB to be modulated for governor circuit 530 Broadband carrier signal output pin, while couple double passage differential linearly driver, through the signal after drive amplification by VOUTA and VOUTB is exported, the 7th triode VT103, the 8th triode VT104 conducting when signal amplitude is more than or equal to threshold value, Broadband carrier signal by transmitting coupling coil after the 38th electric capacity C102, the 37th electric capacity C103 filtering by injecting electricity Net.
Fig. 8 and Fig. 9 is referred to, is second and third signal of the broadband routing unit 500 of the utility model preferred embodiment The structural representation of termination power.Its operation principle is identical with the first signal coupling circuit, and difference is only that transmission, receives enable Pin is different.I will not elaborate for particular content.
Broadband carrier signal through A, B, C coupling to the second transformer T2 secondary, this signal is through the first filter circuit 540 filtering interfering noises, afterwards into governor circuit 530.
Governor circuit 530 is used to realize broadband signal parsing, modulation, data operation, transmitting-receiving control, messaging parameter and data The functions such as storage.
Figure 10 is referred to, is the zero cross detection circuit of the broadband routing unit 500 that the utility model preferred embodiment is provided 560 structural representations.220V_A and 220V_N are respectively A phase phase wire pins and zero line by drawing after the 51st resistance R111 Pin, when A phase voltage waveforms change from negative half-cycle to positive half period and amplitude is more than certain value, the tenth triode D91 conductings, Formed from A phases to the loop of zero line, the LEDs ON in the second optocoupler PU91, and then caused in the second optocoupler PU91 Phototriode is turned on, and switching tube VT91 conductings, ZERO_IN pins are changed into the zero passage of low level, i.e. main control chip from high level Detection pin detects trailing edge signal;When A phase voltage waveforms change and amplitude is less than certain from positive half period to negative half-cycle During value, phototriode VT91 cut-offs, the zero passage detection pin of main control chip detects rising edge signal;The meeting of governor circuit 530 Data are sent to A phases when rising edge or trailing edge (i.e. zero crossing) is detected, due to 120 degree of three-phase voltage phase angle mutual deviation, Therefore the voltage over zero of B, C phase can be extrapolated according to phase angle, equally data is sent to corresponding phase in zero crossing.
Communication interface circuit 520 is the passage for coupling governor circuit 530 and MCU administrative units 600.
The workflow of the concentrator 200 that the utility model embodiment is provided is as follows:
Input protection circuit 410 will be obtained for protecting late-class circuit, the first current rectifying and wave filtering circuit 420 after AC process Galvanic current is exported to DC chopper circuit 450, after processing direct current, output to the second current rectifying and wave filtering circuit Fed back after the current information of the first FET Q1 that the collection of 470 current sample feedback circuit 460 flows through DC chopper circuit 450 To ON-OFF control circuit 440;Second current rectifying and wave filtering circuit 470 carries out secondary to the alternating voltage that DC chopper circuit 450 is exported Exported after rectifying and wave-filtering to output voltage stabilizing circuit 490;Voltage sample feedback circuit 480 is to the output voltage after secondary rectifying and wave-filtering Sampled and itself and the deviation of reference voltage are converted into corresponding on-off model, output to ON-OFF control circuit 440; The break-make frequency of the first FET Q1 of the control DC chopper circuit 450 of ON-OFF control circuit 440;Output voltage stabilizing circuit 490 Adjust magnitude of voltage and current value after secondary rectifying and wave-filtering, and export the voltage of 5V and 12V, wherein, the voltage of 12V is used for all the way Export to broadband routing unit 500.
The 12V voltage conversions that the switching power supply 400 that voltage conversion circuit 510 will be received is exported are that broadband route list Specification in unit 500 required by other circuit normal works.
When receiving data, governor circuit 530 is opened to receive and allowed, and broadband carrier signal is through A, B, C coupling to second T2 level of transformer, this signal enters governor circuit 530 after the filtering interfering noise of the first filter circuit 540, then by signal Be reduced into the digital baseband signal that main control chip is capable of identify that after demodulation, main control chip in accordance with wideband protocol to the data that receive It is analyzed after extracting and effective information is sent to the MCU administrative units 600 of concentrator 200 by communication interface circuit 520.
When sending data, governor circuit 530 judges A phase zero points by zero cross detection circuit 560, then is derived by phase relation Go out B, C phase zero point moment, when the zero point of target phase arrives, closing to receive allows, and is allowed while enabling and sending, and is connect from communication The broadband signal of special frequency band (typically in 2-30MHz) is modulated to after the mouth reception communication instruction of circuit 520, then to the width Band signal is amplified driving, and broadband signal is injected into AC network finally by signal coupling unit 550.
In sum, the switching power unit 300 and concentrator of a kind of integrated broadband route that the utility model is provided 200, the integrated broadband routing unit 500 on switching power unit not only can independently be realized by broadband routing unit 500 The long-range collection to data;Bimodulus can also be bonded with the external routing unit 100 communicated based on non-broadband carrier system Or multi-mode communication scheme, realize that the power information simultaneously to the meter of the meter or multi-mode communication scheme of different communication scheme is adopted Collection.When external routing unit 100 route for arrowband, the broadband routing unit in external routing unit 100 and concentrator 200 500 are combined into the dual mode communication scheme that can realize narrowband carrier communication and bandwidth carrier communication;When external routing unit 100 is During wireless routing, the broadband routing unit 500 in external routing unit 100 and concentrator 200 is combined into and can realize channel radio Letter and the dual mode communication scheme of bandwidth carrier communication;It is external when external routing unit 100 is that arrowband route with wireless bimodulus Routing unit 100 be combined into the broadband routing unit 500 in concentrator 200 can realize narrowband carrier communicate, bandwidth carrier Communication and three mould communication plans of radio communication.
In description of the present utility model, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and can not It is interpreted as indicating or implying relative importance.
In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " coupling Close " should be interpreted broadly, for example, it may be electrical connection;Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Can be two connections of element internal.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.

Claims (7)

1. the switching power unit that a kind of integrated broadband route, it is characterised in that be applied to power consumer electricity consumption information collection system Concentrator in system, the concentrator also includes MCU administrative units, and the power user power consumption information acquisition system also includes outer Routing unit is put, the external routing unit is coupled with the MCU administrative units, wherein, the external routing unit is arrowband Any one in route, wireless routing or arrowband and wireless bimodulus route;
The switching power unit of the integrated broadband route includes switching power supply and broadband routing unit, the switch electricity Source unit is coupled with the broadband routing unit;The switching power supply and the broadband routing unit with the MCU Administrative unit is coupled.
2. the switching power unit that integrated broadband according to claim 1 route, it is characterised in that the broadband route is single Unit includes voltage conversion circuit, communication interface circuit, governor circuit, the first filter circuit, zero cross detection circuit and signal coupling Close unit;
The voltage conversion circuit is coupled with the switching power supply;The communication interface circuit and the MCU administrative units Coupling;The signal coupling unit and the zero cross detection circuit are coupled with AC network;
The voltage conversion circuit, the communication interface circuit, the zero cross detection circuit and first filter circuit point Do not coupled with the governor circuit;First filter circuit is coupled with the signal coupling unit.
3. the switching power unit that integrated broadband according to claim 2 route, it is characterised in that the signal coupling is single Unit includes the first signal coupling circuit, secondary signal termination power and the 3rd signal coupling circuit;
First signal coupling circuit is coupled with the A phase lines of the AC network, for realizing the A with the AC network The signal interaction of phase line;
The secondary signal termination power is coupled with the B phase lines of the AC network, for realizing the B with the AC network The signal interaction of phase line;
3rd signal coupling circuit is coupled with the C phase lines of the AC network, for realizing the C with the AC network The signal interaction of phase line;
First signal coupling circuit, the secondary signal termination power and the 3rd signal coupling circuit with it is described First filter circuit is coupled.
4. the switching power unit that integrated broadband according to claim 1 route, it is characterised in that the Switching Power Supply list Unit includes input protection circuit, the first current rectifying and wave filtering circuit, over-voltage detection circuit, DC chopper circuit, the second rectifying and wave-filtering electricity Road, voltage sample feedback circuit, current sample feedback circuit, ON-OFF control circuit and output voltage stabilizing circuit;
The output voltage stabilizing circuit is coupled with the MCU administrative units and the broadband routing unit respectively;
The input protection circuit is coupled with first current rectifying and wave filtering circuit;The ON-OFF control circuit is respectively with described first Current rectifying and wave filtering circuit, the over-voltage detection circuit, the DC chopper circuit, the current sample feedback circuit and the electricity Pressure sampling feedback circuit coupling;The over-voltage detection circuit is coupled with first current rectifying and wave filtering circuit;The DC chopped-wave electricity Road couples with the current sample feedback circuit and second current rectifying and wave filtering circuit respectively;Second current rectifying and wave filtering circuit point Do not coupled with the voltage sample feedback circuit and the output voltage stabilizing circuit;
The voltage sample feedback circuit be used to sampling the output voltage of second current rectifying and wave filtering circuit and by its with The deviation of reference voltage is converted to corresponding on-off model and exports to the ON-OFF control circuit;The current sample feedback electricity Road is used for collection and flows through the current signal of the DC chopper circuit and feed back to the ON-OFF control circuit.
5. the switching power unit that integrated broadband according to claim 4 route, it is characterised in that the first rectification filter Wave circuit includes the first rectification circuit, anti-electromagnetic interference circuit and the second filter circuit;
First rectification circuit is coupled with the input protection circuit and the anti-electromagnetic interference circuit respectively, the anti-electricity Magnetic disturbance circuit is coupled with second filter circuit;Second filter circuit respectively with the over-voltage detection circuit and described ON-OFF control circuit is coupled.
6. the switching power unit that integrated broadband according to claim 4 route, it is characterised in that the DC chopped-wave electricity Road includes the first FET, transformer and RCD absorbing circuits;The grid of first FET and the switch control Circuit is coupled;The drain electrode of first FET and the RCD absorbing circuits respectively with the primary side of the transformer around Group coupling;The source electrode of first FET is coupled with the current sample feedback circuit;The secondary side of the transformer around Group is coupled with second current rectifying and wave filtering circuit.
7. a kind of concentrator, it is characterised in that be applied to power user power consumption information acquisition system, the concentrator includes MCU The switching power unit of the integrated broadband route described in administrative unit and claim any one of 1-6, the power consumer is used Power utilization information collection system includes external routing unit, and the switching power unit of the integrated broadband route and the external route are single Unit couples with the MCU administrative units.
CN201621445541.6U 2016-12-27 2016-12-27 The switching power unit and concentrator of integrated broadband route Active CN206282422U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109035741A (en) * 2018-08-14 2018-12-18 国网辽宁省电力有限公司铁岭供电公司 Bimodulus electric energy meter communication system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109035741A (en) * 2018-08-14 2018-12-18 国网辽宁省电力有限公司铁岭供电公司 Bimodulus electric energy meter communication system and method

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