CN108806224A - Concentrator based on bandwidth carrier communication - Google Patents
Concentrator based on bandwidth carrier communication Download PDFInfo
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- CN108806224A CN108806224A CN201810902219.9A CN201810902219A CN108806224A CN 108806224 A CN108806224 A CN 108806224A CN 201810902219 A CN201810902219 A CN 201810902219A CN 108806224 A CN108806224 A CN 108806224A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
Abstract
The present invention provides the concentrators communicated based on bandwidth carrier, belong to circuit field, including system control module and power module, system control module includes MCU main control modules and real-time clock module, real-time clock module is connect by iic bus with MCU main control modules, and 4G remote up-links communication module, bandwidth carrier downgoing communication module and memory module are also associated on MCU main control modules.By using bandwidth carrier mechanics of communication to acquire bandwidth carrier electric energy meter energy information in downgoing communication, collected electric energy meter information is returned to the analysis of electric power main website in real time using long-range 4G mechanicss of communication and used by uplink.Power line acquisition signal interference can effectively be evaded, improve carrier acquisition success rate.It can make being contacted with main website for concentrator real-time high-efficiency by 4G telecommunication techniques, signal is strong, ability to communicate is strong, ensures that main website once acquires success rate.
Description
Technical field
The invention belongs to circuit fields, more particularly to the concentrator based on bandwidth carrier communication.
Background technology
State's net is mostly using narrowband carrier communication modes with live carrier wave concentrator descending carrier communication modes at present, remotely
Communication uses 3G communication modes.Narrowband carrier communication modes anti-interference ability is weak, and acquisition success rate is low.3G signal communications are unstable
Fixed, signal is easily disturbed.
Invention content
In order to solve shortcoming and defect existing in the prior art, the present invention provides the concentrations communicated based on bandwidth carrier
Device can make being contacted with main website for concentrator real-time high-efficiency by by 4G telecommunication techniques, signal is strong, ability to communicate is strong,
Ensure that main website once acquires success rate.
In order to reach above-mentioned technical purpose, the present invention provides the concentrator communicated based on bandwidth carrier, the concentrator
The power module for connecting including system control module and with system control module, powering for system control module, feature exist
In, the system control module, including：
MCU main control modules and real-time clock module, real-time clock module are connect by iic bus with MCU main control modules,
4G remote up-links communication module, bandwidth carrier downgoing communication module and memory module are also associated on MCU main control modules；
Wherein, the real-time clock module includes：
Clock chip circuit and clock power control circuit；
Wherein, clock chip circuit includes RX8025T chips, and INTA, INTB, SCL and SDA of RX8025T chips draw
Foot is connect through resistance R12 with system power supply VDD33；
Clock power control circuit includes battery BT1, and the cathode of battery BT1 connects 3.6V lithium batteries, the anode of battery BT1
It is connect with MCU main control module V_RT pins through metal-oxide-semiconductor Q1, zener diode D4, the grid of metal-oxide-semiconductor Q1 is grounded through resistance R17, surely
Press the cathode of diode D4 successively through diode D3, D2, D1 and system power supply VDD50 connections, in V_RT pins successively through parallel connection
Capacitance C8, C10 ground connection.
Optionally, the concentrator includes 485 communication modules, and the 485 logical modeling block includes：
The ends VCC of 485 communication chips, 485 communication chips are connected with the ports V485, and the ends VCC of 485 communication chips are also through electricity
Hold C5 to connect with DGND, is equipped with resistance R35, zener diode TVS1 successively between the ends GND and the ends VCC of 485 communication chips
And resistance R34, the pin 1 of 485 communication chips connect through the second control terminal of capacitance C20, resistance R32 in parallel and optocoupler O6
It connects, the pin 2,3 of 485 communication chips is connected with the second controlled end of optocoupler O7 simultaneously, and the pin 4 of 485 communication chips is through resistance
R33 is connected with the second controlled end of optocoupler O7, is grounded simultaneously, the first control terminal of optocoupler O6 through resistance R31 and optocoupler O7 the
One controlled end is connected；
The second controlled end of optocoupler O6 is grounded, and the first controlled end of optocoupler O6 connects through resistance R28 and system power supply VDD33
It connects while being connect with the 485_RXD pins of MCU main control modules, the first control terminal of optocoupler O7 is through resistance R29 and system power supply
Second control terminal of VDD33 connections, optocoupler O7 is connect through resistance R30 with the 485_TXD pins of MCU main control modules, in resistance R30
Both ends are parallel with capacitance C19.
Optionally, the concentrator includes infrared debugging module, the infrared debugging module, including：
Infrared transmitting circuit and infrared receiving circuit；
The infrared transmitting circuit includes triode Q6, and the emitter of Q6 is connect with system power supply VDD33, the base stage warp of Q6
Resistance is connect with the IrDA_TXD pins of MCU main control modules, and the collector of Q6 is through first resistor R74, infrared-emitting diode
The collector of DS1, R75 and triode Q7 connect, and resistance R66 is equipped between the base stage and collector of Q6；
The base stage of Q7 through second resistance be connected to MCU main control modules IrDA_38 pins connect, Q7 emitter with
Resistance R67 is equipped between the IrDA_38 pins of MCU main control modules.
Optionally, the infrared receiving circuit, including：
The ends VCC of infrared receiving diode U14, U14 are connect through resistance R72 with system power supply VDD33, the OUT terminal of U14 with
The rDA_RXD pins of MCU main control modules are connected while being connect with system power supply VDD33 through resistance R73, the ends the GND ground connection of U14.
Optionally, the power module includes reduction voltage loop, and the reduction voltage loop includes：
Be depressured chip, the input terminal for being depressured chip connect with feeder ear, be depressured the SHDN pins of chip through resistance R110 and
Feeder ear connects, and the CB for being depressured chip draws foot meridian capacitor C74, diode D13 ground connection, be depressured the SW pins of chip through inductance L6 with
System power supply VDD33 connections are depressured the FB pins of chip through resistance R142, R143 and system power supply VDD33 connections, while FB draws
Foot is also grounded through resistance R138 and the GND pin of decompression chip.
The advantageous effect that technical solution provided by the invention is brought is：
By using bandwidth carrier mechanics of communication to acquire bandwidth carrier electric energy meter energy information in downgoing communication, uplink is adopted
Collected electric energy meter information the analysis of electric power main website is returned in real time with long-range 4G mechanicss of communication to use.Electricity can effectively be evaded
The line of force acquires signal interference, improves carrier acquisition success rate.It can make concentrator real-time high-efficiency by 4G telecommunication techniques
It is contacted with main website, signal is strong, ability to communicate is strong, ensures that main website once acquires success rate.
Description of the drawings
It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of technical scheme of the present invention
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of the concentrator provided by the invention communicated based on bandwidth carrier；
Fig. 2 (a) is the structural schematic diagram of clock chip circuit provided by the invention；
Fig. 2 (b) is the structural schematic diagram of clock power control circuit provided by the invention；
Fig. 3 is the structural schematic diagram of 485 communication module provided by the invention；
Fig. 4 is the structural schematic diagram of infrared transmitting circuit provided by the invention；
Fig. 5 is the structural schematic diagram of infrared receiving circuit provided by the invention；
Fig. 6 is the structural schematic diagram of reduction voltage loop provided by the invention.
Specific implementation mode
To keep structure of the invention and advantage clearer, the structure of the present invention is made further below in conjunction with attached drawing
Description.
Embodiment one
The present invention provides the concentrator communicated based on bandwidth carrier, the concentrator include system control module and with
The power module that system control module is connected, powered for system control module, as shown in Figure 1, the system control module, packet
It includes：
MCU main control modules and real-time clock module, real-time clock module are connect by iic bus with MCU main control modules,
4G remote up-links communication module, bandwidth carrier downgoing communication module and memory module are also associated on MCU main control modules.
In force, system control module includes MCU main control modules, real-time clock module, 485 communication modules, 4G long-range
Uplink communication module, bandwidth carrier downgoing communication module, USB communication module, ethernet communication module, display module, storage mould
Block, instruction lamp control module and infrared debugging module；
MCU main control modules are made of cpu chip LPC1778 (U1) and peripheral crystal oscillating circuit and detection of power loss chip.Periphery
Crystal oscillator Y1 uses 12M crystal oscillators, detection of power loss and watchdog chip U2 that can be answered when system voltage is less than 2.93V using CAT823
Position MCU, increases system reliability.
MCU chip is connected by iic bus with real-time clock module；It is connect with 485 communicating circuits by UART serial ports；It is logical
UART serial ports is crossed to connect with bandwidth carrier downgoing communication module；It is connect with bandwidth carrier downgoing communication module by UART serial ports；
It is connect with metering communication module by UART serial ports；It is connect with ethernet communication module by industry ethernet；Pass through usb bus
It is connect with USB communication control modules；It is connect with memory module by spi bus, by controlling I/O pin output control indicator light
Control circuit is connect by CPU I/O pins with remote signalling control circuit.
This concentrator descending carrier scheme uses power wire broadband carrier module.Broadband power line communication uses
OFDM technology can effectively resist multi-path jamming, and the signal being disturbed is made to remain to reliable reception.Even in power distribution network by tight
Interfere again in the case of, high bandwidth can be also provided and ensure bandwidth for transmission efficiency, to realize the high speed reliable communication of data.
The main thought of OFDM technology be in the frequency domain of 2-34MHz by given channel be divided into tens so that it is thousands of it is independent it is different just
Orthogonal subchannel is modulated using a subcarrier on each of the sub-channels, and each subcarrier transmitting data in parallel.It is transmitting
In the process, power wire broadband carrier equipment is by the disturbance regime of the lasting each subchannel of detection.If it find that there is the dry of burst
The electromagnetic interference disturbed in (such as harmonic wave) generation or certain subchannels is very serious, and power wire broadband carrier equipment can be intelligently
It adjusts, that is, is transferred to transmission in other glitch-free subchannels, to avoid the frequency range with interference source on power line,
Uplink remote communication module uses 4G communication modes, communication speed is faster, network spectrum is wider, communication is more flexible,
Intelligent behaviour higher, compatible performance be smoother, frequency band service efficiency higher, post and telecommunication tariff are more preferential.
Downgoing communication of the present invention uses 485 communication modes, bandwidth carrier communication modes, uplink communication remotely to lead to using 4G
News；Uplink communication is using 376.1 master station protocols, 698 communications protocol of object-oriented；Downgoing communication supports 645 agreement of electric energy meter, face
To 698 agreement of object.
Bandwidth carrier downgoing communication module：Bandwidth carrier downgoing communication module is carried using BD-KDZB_012 concentrators broadband
Wave module.The wideband OFDM Power Line Carrier Communication Module that the module is specially designed using power line medium as communication channel,
Bandwidth carrier processing chip used in the module is a high integration Soc chips, using 65 nanometers of manufacture crafts, before simulation
End, baseband modulation and demodulation, Digital Signal Processing, CPU core and abundant function peripheral hardware perfection are integrated in one, and provide physical layer
(PHY), the complete power line such as media access control layer (MAC), adaptation layer (ADP), network layer (NET), application layer (APP) is logical
Believe solution.The bandwidth carrier communication chip reliably counts between realizing the electric terminal equipment based on power line communication network
According to exchcange core module, have frame relay forwarding strategy, signal strength instruction, phase-detection, automatic rate/power adjustment, oneself
Adapt to the functions such as message framing, perfect network data communication protocol suite, and with traffic rate is fast, communication reliability is high,
The features such as low cost, low-power consumption, few peripheral components.
Module advantage:High frequency points, far from power line interference；It supports 512 subcarriers, subcarrier can be automatically switched, automatically
Evade interference；Carrier-in-interference intelligent recognition and elimination；Adaptive impulse disturbances, active suppression；It is extremely strong with noise resisting ability
Synchronous detecting and alarm；Algorithm framework integrity design, is greatly improved overall system performance；It supports AES128 encryptions, also supports
WAPI Encryption Transmission Protocols, the reliable of data transmission security
4G remote up-link communication modules：Concentrator telecommunication of the present invention uses 4G mechanicss of communication.Module model L710-
CN, the 4G wireless communication modules being a highly integrated support LTE FDD/LTE TDD/WCDMA/TD-SCDMA/GSM standard (5 moulds 8
Frequently)；Supply voltage 3.3V~4.4V, operating temperature：- 40 DEG C~+85 °
This module supports hardware reset and software reset, supports SIM card to be heated by environmental requirement in low temperature, can pass through mould
Block itself indicates that lamp Real-time Feedback operating condition.It is operated under wide temperature environment, can be installed and used in the whole nation, not by high and cold high temperature
It influences.Communication speed is faster, network spectrum is wider, communication is more flexible, intelligent behaviour higher, compatible performance are smoother, frequency band makes
With many advantages such as more efficient, post and telecommunication tariff is more preferential.
Ethernet communication module：Ethernet chip is communicated using LAN8720AI (U16) by industry ethernet and CPU, is adopted
With 25M plug-in units crystal oscillator (Y2) frequency modulation(PFM).Mouth is safeguarded as concentrator, is detected for production debugging.It is logical at the same time as uplink
Casually, uplink communication supports 698 agreement of object-oriented and 376.1 main website communications protocol.
USB control modules:USB control modules provide 5V power inputs by power module；USB control modules are total by USB
Line is connected with CPU, and J31 is USBA interfaces for installing USB flash disk.The module can be used as system program upgrading debugging mouth, not in scene
Debugging upgrading uses.
USB control module innovative points：An ESD protection chip PRTR5V0U2X (Q17) is carried additionally on usb bus, in data
Usb bus can be protected by exterior static interference, not improve bus reliability and data integrity when transmission or plug USB flash disk.
Wherein, real-time clock module includes：
Clock chip circuit and the clock power control circuit as shown in Fig. 2 (b) as shown in Fig. 2 (a)；
Wherein, clock chip circuit includes RX8025T chips, and INTA, INTB, SCL and SDA of RX8025T chips draw
Foot is connect through resistance R12 with system power supply VDD33；
Clock power control circuit includes battery BT1, and the cathode of battery BT1 connects 3.6V lithium batteries, the anode of battery BT1
It is connect with MCU main control module V_RT pins through metal-oxide-semiconductor Q1, zener diode D4, the grid of metal-oxide-semiconductor Q1 is grounded through resistance R17, surely
Press the cathode of diode D4 successively through diode D3, D2, D1 and system power supply VDD50 connections, in V_RT pins successively through parallel connection
Capacitance C8, C10 ground connection.
The real-time clock module performance：The error of time of day of timing unit≤± 0.5s/d.Converter can receive concentrator
Or the clock of local handheld device calls survey and clock synchronization order together.
After converter power supply interrupts, data and clock can at least be kept two months.When power up, data are preserved
It does not lose, internal clocking normal operation.
The circuit advantage：Clock accuracy is high, and error of time of day is small, power down clock normal operation.In the case that 220V powers
Clock power is provided by system 5V (VDD50) power supply by 32 pole pipes (D1, D2, D3) decompressions, by 3.6V in the case of power failure
Lithium battery BT1 is provided, and normal clock runs the time limit and is not less than 10 years.
It is MX25L51235E that memory module, which selects serial FLASH, selection chip, which has 512M-BIT memory capacity,
The chip is connect by spi bus with CPU.
Optionally, as shown in figure 3, the concentrator includes 485 communication modules, the 485 logical modeling block includes：
The ends VCC of 485 communication chips, 485 communication chips are connected with the ports V485, and the ends VCC of 485 communication chips are also through electricity
Hold C5 to connect with DGND, is equipped with resistance R35, zener diode TVS1 successively between the ends GND and the ends VCC of 485 communication chips
And resistance R34, the pin 1 of 485 communication chips connect through the second control terminal of capacitance C20, resistance R32 in parallel and optocoupler O6
It connects, the pin 2,3 of 485 communication chips is connected with the second controlled end of optocoupler O7 simultaneously, and the pin 4 of 485 communication chips is through resistance
R33 is connected with the second controlled end of optocoupler O7, is grounded simultaneously, the first control terminal of optocoupler O6 through resistance R31 and optocoupler O7 the
One controlled end is connected；
The second controlled end of optocoupler O6 is grounded, and the first controlled end of optocoupler O6 connects through resistance R28 and system power supply VDD33
It connects while being connect with the 485_RXD pins of MCU main control modules, the first control terminal of optocoupler O7 is through resistance R29 and system power supply
Second control terminal of VDD33 connections, optocoupler O7 is connect through resistance R30 with the 485_TXD pins of MCU main control modules, in resistance R30
Both ends are parallel with capacitance C19.
485 communication modules use 485 chip I SL3152, and data are exchanged by UART serial ports with CPU.
The 485 circuit advantage, baud rate support 2400-115200, support parity check bit configuration, can be according to different tables
Shape parameter configures corresponding parity check bit and baud rate, can gathered data, acquisition under -40 degree to the wide temperature environment of+75 degree
Data success rate is not less than 99.9%.485 communication interfaces belong to downgoing communication interface, support 645 agreement of electric energy meter, object-oriented
698 electric energy meter communications protocol.
Indicating lamp control circuit：Indicating lamp control circuit includes 485 morse signal lights, alarm indicator, running indicator, active instruction
Lamp, idle indicator light.CPU lights or extinguishes indicator light by controlling IO output low and high levels.
When CPU_LED_RUN pins output high level is that running indicator extinguishes, when pin exports low level, running indicator is lighted；
When CPU_LED_GAOJING pins output high level is warning light extinguishing, the warning light when pin exports low level
It lights；
It is that 485 transmission indicator lights extinguish when CPU_485I_TXD_LED pins export high level, when pin exports low level
When 485 transmission indicator lights light；
It is that 485 codan lamps extinguish when CPU_485I_RXD_LED pins export high level, when pin exports low level
When 485 codan lamps light；
The active indicator lights of CF1 are exported with the idle indicator lights of CF2 for computation chip, are not controlled by CPU, are had when CF1 is lighted
Active pulse output, has idle pulse to export when CF2 is lighted；
The circuit advantage：Concentrator current operating situation can be fed back in real time, and abnormal event may determine that according to indicator light
Barrier.Convenient for field application Commissioning Analysis.
Optionally, the concentrator includes infrared debugging module, the infrared debugging module, including：
Infrared transmitting circuit and infrared receiving circuit；
As shown in figure 4, the infrared transmitting circuit includes triode Q6, the emitter of Q6 is connect with system power supply VDD33,
The base stage of Q6 is connect through first resistor with the IrDA_TXD pins of MCU main control modules, and the collector of Q6 is through resistance R74, infrared hair
The collector for penetrating diode DS1, R75 and triode Q7 connects, and resistance R66 is equipped between the base stage and collector of Q6；
The base stage of Q7 through second resistance be connected to MCU main control modules IrDA_38 pins connect, Q7 emitter with
Resistance R67 is equipped between the IrDA_38 pins of MCU main control modules.
As shown in fig. 6, the infrared receiving circuit, including：
The ends VCC of infrared receiving diode U14, U14 are connect through resistance R72 with system power supply VDD33, the OUT terminal of U14 with
The rDA_RXD pins of MCU main control modules are connected while being connect with system power supply VDD33 through resistance R73, the ends the GND ground connection of U14.
Infrared debug circuit supports palm machine to carry out data reading system to converter.It can the electric energy meter data of copy reading in real time.Make
For the supplement to main website copy reading data, it is convenient for site installation test, can flexibly tests installation effect and copy reading success rate.
Power module provides power supply for system control module.Power module is defeated by transformer by 220V exchange input power supplies
Go out the independent current source of 2 groups of isolation.One power supply of circuit exports 17V voltages, and circuit two exports 17V voltages.
As shown in fig. 6, the power module includes reduction voltage loop, the reduction voltage loop includes：
Be depressured chip, the input terminal for being depressured chip connect with feeder ear, be depressured the SHDN pins of chip through resistance R110 and
Feeder ear connects, and the CB for being depressured chip draws foot meridian capacitor C74, diode D13 ground connection, be depressured the SW pins of chip through inductance L6 with
System power supply VDD33 connections are depressured the FB pins of chip through resistance R142, R143 and system power supply VDD33 connections, while FB draws
Foot is also grounded through resistance R138 and the GND pin of decompression chip.
Reduction voltage loop power supply is converted by LDO voltages, and 12V power supplys are exported by being depressured chip AOZ1282CI chip voltages
Bandwidth carrier downgoing communication modular power source is provided；5V is exported by AOZ1282CI chip voltages, and USB control module power supplys are provided；
4V is exported by AOZ1282CI chip voltages, and 4G remote communication module power supplys are provided；It is exported by AOZ1282CI chip voltages
3.3V provides MCU main control modules, indicating lamp module, memory module, real-time clock module, ESMA modules, ethernet module, metering
Acquisition module power supply.
The present invention provides the concentrator communicated based on bandwidth carrier, including system control module and power module, systems
Control module includes MCU main control modules and real-time clock module, and real-time clock module is connected by iic bus and MCU main control modules
It connects, 4G remote up-links communication module, bandwidth carrier downgoing communication module and storage mould is also associated on MCU main control modules
Block.By using bandwidth carrier mechanics of communication to acquire bandwidth carrier electric energy meter energy information in downgoing communication, uplink is using remote
Collected electric energy meter information is returned to the analysis of electric power main website in real time and used by journey 4G mechanicss of communication.Power line can effectively be evaded
Signal interference is acquired, carrier acquisition success rate is improved.Can make concentrator real-time high-efficiency by 4G telecommunication techniques with master
It stands contact, signal is strong, ability to communicate is strong, ensures that main website once acquires success rate.
Each serial number in above-described embodiment is for illustration only, the assembling for not representing each component or the elder generation during use
Sequence afterwards.
Example the above is only the implementation of the present invention is not intended to limit the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (5)
1. based on bandwidth carrier communication concentrator, which is characterized in that the concentrator include system control module and be
The power module that control module of uniting is connected, powered for system control module, which is characterized in that the system control module, including：
MCU main control modules and real-time clock module, real-time clock module is connect by iic bus with MCU main control modules, in MCU
4G remote up-links communication module, bandwidth carrier downgoing communication module and memory module are also associated on main control module；
Wherein, the real-time clock module includes：
Clock chip circuit and clock power control circuit；
Wherein, clock chip circuit includes RX8025T chips, and INTA, INTB, SCL and SDA pin of RX8025T chips are equal
It is connect with system power supply VDD33 through resistance R12；
Clock power control circuit includes battery BT1, and the cathode of battery BT1 connects 3.6V lithium batteries, the anode warp of battery BT1
Metal-oxide-semiconductor Q1, zener diode D4 are connect with MCU main control module V_RT pins, and the grid of metal-oxide-semiconductor Q1 is grounded through resistance R17, voltage stabilizing
The cathode of diode D4 is successively through diode D3, D2, D1 and system power supply VDD50 connections, in V_RT pins successively through parallel connection
Capacitance C8, C10 ground connection.
2. the concentrator according to claim 1 based on bandwidth carrier communication, which is characterized in that the concentrator includes
485 communication modules, the 485 logical modeling block include：
The ends VCC of 485 communication chips, 485 communication chips are connected with the ports V485, and the ends VCC of 485 communication chips are also through capacitance C5
Connect with DGND, between the ends GND and the ends VCC of 485 communication chips successively be equipped with resistance R35, zener diode TVS1 and
The pin 1 of resistance R34,485 communication chips is connect through capacitance C20, resistance R32 in parallel with the second control terminal of optocoupler O6, and 485
The pin 2,3 of communication chip is connected with the second controlled end of optocoupler O7 simultaneously, and the pin 4 of 485 communication chips is through resistance R33 and light
The second controlled end of coupling O7 is connected while being grounded, first controlled end of first control terminal through resistance R31 Yu optocoupler O7 of optocoupler O6
It is connected；
The second controlled end of optocoupler O6 is grounded, and the first controlled end of optocoupler O6 connect with system power supply VDD33 through resistance R28, is same
When connect with the 485_RXD pins of MCU main control modules, the first control terminal of optocoupler O7 connects through resistance R29 and system power supply VDD33
Connect, the second control terminal of optocoupler O7 is connect through resistance R30 with the 485_TXD pins of MCU main control modules, the both ends resistance R30 simultaneously
It is associated with capacitance C19.
3. the concentrator according to claim 1 based on bandwidth carrier communication, which is characterized in that the concentrator includes red
Outer debugging module, the infrared debugging module, including：
Infrared transmitting circuit and infrared receiving circuit；
The infrared transmitting circuit includes triode Q6, and the emitter of Q6 is connect with system power supply VDD33, and the base stage of Q6 is through resistance
It is connect with the IrDA_TXD pins of MCU main control modules, the collector of Q6 is through first resistor R74, infrared-emitting diode DS1, R75
It is connect with the collector of triode Q7, resistance R66 is equipped between the base stage and collector of Q6；
The IrDA_38 pins that the base stage of Q7 is connected to MCU main control modules through second resistance connect, in emitter and the MCU master of Q7
It is equipped with resistance R67 between the IrDA_38 pins of control module.
4. the concentrator according to claim 1 based on bandwidth carrier communication, which is characterized in that the infrared receiver electricity
Road, including：
The ends VCC of infrared receiving diode U14, U14 are connect through resistance R72 with system power supply VDD33, the OUT terminal and MCU of U14
The rDA_RXD pins of main control module are connected while being connect with system power supply VDD33 through resistance R73, the ends the GND ground connection of U14.
5. the concentrator according to claim 1 based on bandwidth carrier communication, which is characterized in that the power module includes
Reduction voltage loop, the reduction voltage loop include：
It is depressured chip, the input terminal for being depressured chip is connect with feeder ear, is depressured the SHDN pins of chip through resistance R110 and power supply
End connection, the CB for being depressured chip draw foot meridian capacitor C74, diode D13 ground connection, are depressured the SW pins of chip through inductance L6 and system
Power vd D33 connections are depressured the FB pins of chip through resistance R142, R143 and system power supply VDD33 connections, while FB pins are also
It is grounded through resistance R138 and the GND pin of decompression chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810902219.9A CN108806224A (en) | 2018-08-09 | 2018-08-09 | Concentrator based on bandwidth carrier communication |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810902219.9A CN108806224A (en) | 2018-08-09 | 2018-08-09 | Concentrator based on bandwidth carrier communication |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110147341A (en) * | 2019-05-16 | 2019-08-20 | 国网重庆市电力公司电力科学研究院 | A kind of electric energy meter and communication means of the communication protocol of compatibility 645 and 698 |
| CN110441595A (en) * | 2019-04-23 | 2019-11-12 | 浙江八达电子仪表有限公司 | Three-phase intelligent electric-energy meter based on AC-DC high frequency conversion power supply |
| CN113993223A (en) * | 2021-11-08 | 2022-01-28 | 成都信息工程大学 | Large-range pipeline detection and positioning system based on 5G double-ring communication |
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| CN110441595A (en) * | 2019-04-23 | 2019-11-12 | 浙江八达电子仪表有限公司 | Three-phase intelligent electric-energy meter based on AC-DC high frequency conversion power supply |
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| CN113993223B (en) * | 2021-11-08 | 2023-07-07 | 成都信息工程大学 | Large-range pipeline detection and positioning system based on 5G double-ring communication |
| CN114866875A (en) * | 2022-05-06 | 2022-08-05 | 贵州电网有限责任公司 | Broadband carrier communication expansion device based on interconnection and interworking |
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