CN208722400U - Concentrator based on bandwidth carrier communication - Google Patents
Concentrator based on bandwidth carrier communication Download PDFInfo
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- CN208722400U CN208722400U CN201821279726.3U CN201821279726U CN208722400U CN 208722400 U CN208722400 U CN 208722400U CN 201821279726 U CN201821279726 U CN 201821279726U CN 208722400 U CN208722400 U CN 208722400U
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Abstract
The utility model provides the concentrator based on bandwidth carrier communication, belong to circuit field, including system control module and power module, system control module includes MCU main control module and real-time clock module, real-time clock module is connect by iic bus with MCU main control module, and 4G remote up-link communication module, bandwidth carrier downgoing communication module and memory module are also connected on MCU main control module.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 mechanics of communication and used by uplink.Power line acquisition signal interference can effectively be evaded, improve carrier acquisition success rate.It can make contacting with main website for concentrator real-time high-efficiency by 4G telecommunication technique, signal is strong, ability to communicate is strong, ensures main website one acquisition success rate.
Description
Technical field
The utility model belongs to circuit field, the in particular to concentrator based on bandwidth carrier communication.
Background technique
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 mode.Narrowband carrier communication modes anti-interference ability is weak, and acquisition success rate is low.3G signal communication is unstable
Fixed, signal is vulnerable to interference.
Utility model content
In order to solve shortcoming and defect existing in the prior art, the utility model is provided based on bandwidth carrier communication
Concentrator can make contacting with main website for concentrator real-time high-efficiency by by 4G telecommunication technique, and signal is strong, ability to communicate
By force, ensure main website one acquisition success rate.
In order to reach above-mentioned technical purpose, the utility model provides the concentrator based on bandwidth carrier communication, the collection
The power module that middle device includes system control module and connect with system control module, powers for system control module, it is special
Sign is, the system control module, comprising:
MCU main control module and real-time clock module, real-time clock module are connect by iic bus with MCU main control module,
4G remote up-link communication module, bandwidth carrier downgoing communication module and memory module are also connected on MCU main control module；
Wherein, the real-time clock module includes:
Clock chip circuit and clock power control circuit；
Wherein, clock chip circuit includes RX8025T chip, and INTA, INTB, SCL and SDA of RX8025T chip 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 battery, the anode of battery BT1
It is connect through metal-oxide-semiconductor Q1, zener diode D4 with MCU main control module V_RT pin, 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 connection, in V_RT pin successively through parallel connection
Capacitor C8, C10 ground connection.
Optionally, the concentrator includes 485 communication modules, and the 485 logical modeling block includes:
The end VCC of 485 communication chips, 485 communication chips is connected with the port V485, and the end VCC of 485 communication chips is also through electricity
Hold C5 to connect with DGND, is successively arranged resistance R35, zener diode TVS1 between the end GND and the end VCC of 485 communication chips
And resistance R34, the pin 1 of 485 communication chips connect through the second control terminal of capacitor C20, resistance R32 and optocoupler O6 in parallel
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 pin of MCU main control module, the first control terminal of optocoupler O7 is through resistance R29 and system power supply
Second control terminal of VDD33 connection, optocoupler O7 is connect through resistance R30 with the 485_TXD pin of MCU main control module, in resistance R30
Both ends are parallel with capacitor C19.
Optionally, the concentrator includes infrared debugging module, the infrared debugging module, comprising:
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 pin of MCU main control module, and the collector of Q6 is through first resistor R74, infrared-emitting diode
The connection of the collector of DS1, R75 and triode Q7, is equipped with resistance R66 between the base stage and collector of Q6；
The base stage of Q7 through second resistance be connected to MCU main control module IrDA_38 pin connect, Q7 emitter with
Resistance R67 is equipped between the IrDA_38 pin of MCU main control module.
Optionally, the infrared receiving circuit, comprising:
The end 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 pin connection of MCU main control module is connect through resistance R73 with system power supply VDD33 simultaneously, the end 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 pin of chip through resistance R110 and
Feeder ear connection, the CB for being depressured chip draw foot meridian capacitor C74, diode D13 ground connection, be depressured the SW pin of chip through inductance L6 with
System power supply VDD33 connection is depressured the FB pin of chip through resistance R142, R143 and system power supply VDD33 connection, while FB draws
GND pin of the foot also through resistance R138 and decompression chip is grounded.
Technical solution provided by the utility model has the benefit that
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 mechanics 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 technique
It is contacted with main website, signal is strong, ability to communicate is strong, ensures main website one acquisition success rate.
Detailed description of the invention
It, below will be to needed in embodiment description in order to illustrate more clearly of the technical solution of the utility model
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram of the concentrator provided by the utility model based on bandwidth carrier communication；
Fig. 2 (a) is the structural schematic diagram of clock chip circuit provided by the utility model；
Fig. 2 (b) is the structural schematic diagram of clock power control circuit provided by the utility model；
Fig. 3 is the structural schematic diagram of 485 communication module provided by the utility model；
Fig. 4 is the structural schematic diagram of infrared transmitting circuit provided by the utility model；
Fig. 5 is the structural schematic diagram of infrared receiving circuit provided by the utility model；
Fig. 6 is the structural schematic diagram of reduction voltage loop provided by the utility model.
Specific embodiment
To keep the structure and advantage of the utility model clearer, make below in conjunction with structure of the attached drawing to the utility model
It is further described through.
Embodiment one
The utility model provides the concentrator based on bandwidth carrier communication, the concentrator include system control module with
And the power module for connecting with system control module, powering for system control module, as shown in Figure 1, the system control module,
Include:
MCU main control module and real-time clock module, real-time clock module are connect by iic bus with MCU main control module,
4G remote up-link communication module, bandwidth carrier downgoing communication module and memory module are also connected on MCU main control module.
In an implementation, system control module includes MCU main control module, 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 module is made of cpu chip LPC1778 (U1) and peripheral crystal oscillating circuit and detection of power loss chip.Periphery
Crystal oscillator Y1 uses 12M crystal oscillator, detection of power loss and watchdog chip U2 that can answer when system voltage is lower 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 by UART serial ports with 485 communicating circuits；It is logical
UART serial ports is crossed to connect with bandwidth carrier downgoing communication module；It is connect by UART serial ports with bandwidth carrier downgoing communication module；
It is connect by UART serial ports with metering communication module；It is connect by industry ethernet with ethernet communication module；Pass through usb bus
It is connect with USB communication control module；It is connect by spi bus with memory module, control instructions lamp is exported by control I/O pin
Control circuit is connect by CPU I/O pin 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 where, it also can provide high bandwidth and guarantee 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 on power line with interference source,
Uplink remote communication module uses 4G communication mode, communication speed is faster, network spectrum is wider, communication is more flexible,
Higher, the compatible performance of intelligent behaviour is smoother, frequency band service efficiency is higher, post and telecommunication tariff is more preferential.
The utility model downgoing communication uses 485 communication modes, bandwidth carrier communication modes, and uplink communication uses 4G long-range
Communication；Uplink communication uses 376.1 master station protocols, 698 communications protocol of object-oriented；Downgoing communication support 645 agreement of electric energy meter,
698 agreement of object-oriented.
Bandwidth carrier downgoing communication module: bandwidth carrier downgoing communication module is carried using BD-KDZB_012 concentrator broadband
Wave module.The wideband OFDM Power Line Carrier Communication Module that the module is specially designed using power line medium as communication channel,
It is a high integration Soc chip that bandwidth carrier used in the module, which handles chip, using 65 nanometers of manufacture crafts, before simulation
End, baseband modulation and demodulation, Digital Signal Processing, CPU core and function peripheral hardware perfection abundant 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 is realized reliably to be counted between 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 message framing, the functions such as perfect network data communication protocol suite, and have 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 encryption, also supports
WAPI Encryption Transmission Protocol, the reliable of data transmission security
4G remote up-link communication module: the utility model concentrator telecommunication uses 4G mechanics of communication.Module model
L710-CN, the 4G wireless communication module being a highly integrated support LTE FDD/LTE TDD/WCDMA/TD-SCDMA/GSM standard
(5 mould, 8 frequency)；Supply voltage 3.3V~4.4V, operating temperature: -40 DEG C~+85 °
This module supports hardware reset and software reset, supports SIM card to heat in low temperature by environmental requirement, can pass through mould
Block itself indicates that lamp Real-time Feedback operating condition.Work can install and use, not by high and cold high temperature under wide temperature environment in the whole nation
It influences.Communication speed is faster, network spectrum is wider, communication is more flexible, intelligent behaviour is higher, compatible performance is 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 unit 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 module: USB control module provides 5V power input by power module；USB control module is total by USB
Line is connected with CPU, and J31 is USBA interface for installing USB flash disk.The module can be used as system program upgrading debugging mouth, not on site
Debugging upgrading uses.
USB control module innovative point: ESD protection chip PRTR5V0U2X (Q17) is carried additionally on usb bus, in data
Usb bus be can protect when transmission or plug USB flash disk not by exterior static interference, improve bus reliability and data integrity.
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 chip, and INTA, INTB, SCL and SDA of RX8025T chip 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 battery, the anode of battery BT1
It is connect through metal-oxide-semiconductor Q1, zener diode D4 with MCU main control module V_RT pin, 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 connection, in V_RT pin successively through parallel connection
Capacitor 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 saved
It does not lose, internal clocking operates normally.
The circuit advantage: clock accuracy is high, and error of time of day is small, and power down clock operates normally.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 where power failure
Lithium battery BT1 is provided, and normal clock runs the time limit and is not less than 10 years.
Memory module selects serial FLASH, and selection chip is MX25L51235E, 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 end VCC of 485 communication chips, 485 communication chips is connected with the port V485, and the end VCC of 485 communication chips is also through electricity
Hold C5 to connect with DGND, is successively arranged resistance R35, zener diode TVS1 between the end GND and the end VCC of 485 communication chips
And resistance R34, the pin 1 of 485 communication chips connect through the second control terminal of capacitor C20, resistance R32 and optocoupler O6 in parallel
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 pin of MCU main control module, the first control terminal of optocoupler O7 is through resistance R29 and system power supply
Second control terminal of VDD33 connection, optocoupler O7 is connect through resistance R30 with the 485_TXD pin of MCU main control module, in resistance R30
Both ends are parallel with capacitor C19.
485 communication modules use 485 chip I SL3152, exchange data 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 acquire data under -40 degree to the wide temperature environment of+75 degree, acquire
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 exports low and high level by control IO to light or extinguish indicator light.
When CPU_LED_RUN pin output high level is that running indicator extinguishes, when pin exports low level, running indicator is lighted；
When CPU_LED_GAOJING pin output high level is warning light extinguishing, the warning light when pin exports low level
It lights；
When CPU_485I_TXD_LED pin output high level is that 485 transmission indicator lights extinguish, when pin exports low level
When 485 transmission indicator lights light；
When CPU_485I_RXD_LED pin output high level is that 485 codan lamps extinguish, when pin exports low level
When 485 codan lamps light；
The active indicator light of CF1 and the idle indicator light of CF2 are metering chip output, 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: can feed back concentrator current operating situation in real time, may determine that abnormal event according to indicator light
Barrier.Convenient for field application Commissioning Analysis.
Optionally, the concentrator includes infrared debugging module, the infrared debugging module, comprising:
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 pin of MCU main control module, 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 module IrDA_38 pin connect, Q7 emitter with
Resistance R67 is equipped between the IrDA_38 pin of MCU main control module.
As shown in fig. 6, the infrared receiving circuit, comprising:
The end 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 pin connection of MCU main control module is connect through resistance R73 with system power supply VDD33 simultaneously, the end 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 supply
The independent current source of 2 groups of isolation out.One power supply of circuit exports 17V voltage, and circuit two exports 17V voltage.
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 pin of chip through resistance R110 and
Feeder ear connection, the CB for being depressured chip draw foot meridian capacitor C74, diode D13 ground connection, be depressured the SW pin of chip through inductance L6 with
System power supply VDD33 connection is depressured the FB pin of chip through resistance R142, R143 and system power supply VDD33 connection, while FB draws
GND pin of the foot also through resistance R138 and decompression chip is grounded.
Reduction voltage loop power supply is converted by LDO voltage, exports 12V power supply by decompression chip AOZ1282CI chip voltage
Bandwidth carrier downgoing communication modular power source is provided；5V is exported by AOZ1282CI chip voltage, and USB control module power supply is provided；
4V is exported by AOZ1282CI chip voltage, and 4G remote communication module power supply is provided；It is exported by AOZ1282CI chip voltage
3.3V provides MCU main control module, indicating lamp module, memory module, real-time clock module, ESMA module, ethernet module, metering
Acquisition module power supply.
The utility model provides the concentrator based on bandwidth carrier communication, including system control module and power module,
System control module includes MCU main control module and real-time clock module, and real-time clock module passes through iic bus and MCU master control mould
Block connection, is also connected with 4G remote up-link communication module, bandwidth carrier downgoing communication module and storage on MCU main control module
Module.By using bandwidth carrier mechanics of communication to acquire bandwidth carrier electric energy meter energy information in downgoing communication, uplink is used
Collected electric energy meter information is returned to the analysis of electric power main website in real time and used by long-range 4G mechanics of communication.Electric power can effectively be evaded
Line acquires signal interference, improves carrier acquisition success rate.By 4G telecommunication technique can make concentrator real-time high-efficiency with
Main website connection, signal is strong, ability to communicate is strong, ensures main website one acquisition success rate.
Each serial number in above-described embodiment is for illustration only, the assembling for not representing each component or the elder generation in use process
Sequence afterwards.
The above description is only the embodiments of the present invention, is not intended to limit the utility model, all in the utility model
Spirit and principle within, any modification, equivalent replacement, improvement and so on should be included in the protection model of the utility model
Within enclosing.
Claims (5)
1. the concentrator includes system control module and connects with system control module based on the concentrator of bandwidth carrier communication
The power module for connecing, powering for system control module, which is characterized in that the system control module, comprising:
MCU main control module and real-time clock module, real-time clock module is connect by iic bus with MCU main control module, in MCU
4G remote up-link communication module, bandwidth carrier downgoing communication module and memory module are also connected 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 chip, and INTA, INTB, SCL and SDA pin of RX8025T chip are equal
It 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 battery, the anode warp of battery BT1
Metal-oxide-semiconductor Q1, zener diode D4 are connect with MCU main control module V_RT pin, and the grid of metal-oxide-semiconductor Q1 is grounded through resistance R17, pressure stabilizing
The cathode of diode D4 is successively through diode D3, D2, D1 and system power supply VDD50 connection, in V_RT pin successively through parallel connection
Capacitor 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 end VCC of 485 communication chips, 485 communication chips is connected with the port V485, and the end VCC of 485 communication chips is also through capacitor C5
Connect with DGND, be successively arranged between the end GND and the end VCC of 485 communication chips resistance R35, zener diode TVS1 and
The pin 1 of resistance R34,485 communication chips is connect through capacitor 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, is grounded simultaneously, first controlled end of the first control terminal of optocoupler O6 through resistance R31 Yu optocoupler O7
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 pin of MCU main control module, 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 pin of MCU main control module, the both ends resistance R30 simultaneously
It is associated with capacitor 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, comprising:
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 pin of MCU main control module, 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 pin that the base stage of Q7 is connected to MCU main control module through second resistance connects, emitter and MCU master in Q7
It controls and is equipped with resistance R67 between the IrDA_38 pin of module.
4. the concentrator according to claim 3 based on bandwidth carrier communication, which is characterized in that the infrared receiver electricity
Road, comprising:
The end 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 pin connection of main control module is connect through resistance R73 with system power supply VDD33 simultaneously, the end 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 pin 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 pin of chip through inductance L6 and system
Power vd D33 connection is depressured the FB pin of chip through resistance R142, R143 and system power supply VDD33 connection, while FB pin is also
GND pin through resistance R138 and decompression chip is grounded.
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| CN201821279726.3U CN208722400U (en) | 2018-08-09 | 2018-08-09 | Concentrator based on bandwidth carrier communication |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108806224A (en) * | 2018-08-09 | 2018-11-13 | 浙江八达电子仪表有限公司 | Concentrator based on bandwidth carrier communication |
| CN111404580A (en) * | 2020-03-24 | 2020-07-10 | 中国矿业大学 | OFDM-based DC/DC converter power line power signal composite transmission system and transmission method |
-
2018
- 2018-08-09 CN CN201821279726.3U patent/CN208722400U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108806224A (en) * | 2018-08-09 | 2018-11-13 | 浙江八达电子仪表有限公司 | Concentrator based on bandwidth carrier communication |
| CN111404580A (en) * | 2020-03-24 | 2020-07-10 | 中国矿业大学 | OFDM-based DC/DC converter power line power signal composite transmission system and transmission method |
| CN111404580B (en) * | 2020-03-24 | 2021-05-04 | 中国矿业大学 | Power line power signal composite transmission system and transmission method |
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