CN104851272B - Miniaturized high-speed number for state's net II type concentrators passes communication module - Google Patents
Miniaturized high-speed number for state's net II type concentrators passes communication module Download PDFInfo
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- CN104851272B CN104851272B CN201510260500.3A CN201510260500A CN104851272B CN 104851272 B CN104851272 B CN 104851272B CN 201510260500 A CN201510260500 A CN 201510260500A CN 104851272 B CN104851272 B CN 104851272B
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Abstract
The present invention is that a kind of miniaturized high-speed number for state's net II type concentrators passes communication module, and its structure includes MCU control circuit, MODEM modulation-demodulation circuits, zero intermediate frequency and PLL, PA circuit, LAN circuits, radio-frequency switch circuit, VCO phase-locked loop circuits；Including zero intermediate frequency receiving circuit, I Q demodulator circuits, MODEM modulation-demodulation circuits, integrated amplifier circuit, single VCO phase-locked loop circuits, radio-frequency switch circuit, MCU control unit.Advantage：As a result of new technologies such as zero intermediate frequency receptions, so that the volume of module is substantially reduced, solve the problems, such as that original 230 private network module can not meet that II type concentrator communication module volume requirements are netted by state, this module complies fully with requirement of state's net II types concentrator to remote communication module on contour structures and electrical apparatus interface design.
Description
Technical field
The present invention relates to a kind of miniaturized high-speed number for state's net II type concentrators to pass communication module, belongs to
230MHz private network high-speed digital transmission communication technique fields.
Background technology
At present, 15 couples of 230M duplex frequencies that wireless power load management system is distributed using State Radio Regulatory Commission
Point and 10 pairs of either simplex frequencies carry out wireless communication network.According to requirement of the Guo Wang companies on power information collection automation, lead to
II types concentrator and electric power wireless private network are crossed, the power information of resident is gathered and uploaded in real time, if with original
Technology, traditional private network communication module because appearance and size is big, can not meet installation requirement of the II types concentrator to communication module,
It is badly in need of realizing the miniaturization of high-speed digital transmission communication module.
The content of the invention
Proposed by the present invention is that a kind of miniaturized high-speed number for state's net II type concentrators passes communication module, its purpose purport
Overcome existing electric power wireless private network communication module appearance and size is big, II type concentrators can not be netted in state in install the defects of, lead to
Cross using sides such as zero intermediate frequency, I-Q demodulation, Special Purpose Programmable MODEM chips, single-chip integration power amplifier, single VCO Design of PLL
Method, optimizing design scheme, meet contour structures and electrical apparatus interface requirement of state's net II types concentrator to communication module so that module
Volume be substantially reduced, effectively solve high-speed digital transmission communication module problem for installing in II type concentrators are netted by state.
The technical solution of the present invention：Miniaturized high-speed number for state's net II type concentrators passes communication module, and it is tied
Structure is first signal input/output terminal of the first signal output/input with MODEM modulation-demodulation circuits of MCU control circuit
It is corresponding to connect, secondary signal input/output end and the zero intermediate frequency and PLL the first signal input/output terminal pair of MCU control circuit
It should connect, the secondary signal input/output terminal of MODEM modulation-demodulation circuits and zero intermediate frequency and PLL secondary signal input/output
End is corresponding to connect；
Zero intermediate frequency and PLL signal output part are corresponding with the signal input part of PA circuits to connect, and the first of zero intermediate frequency and PLL
Signal input part is corresponding with the signal output part of LAN circuits to connect, the signal output part of PA circuits and the letter of radio-frequency switch circuit
Number input correspondingly connects, and the signal output part of radio-frequency switch circuit is corresponding with the signal input part of LAN circuits to connect；
The signal output part of MODEM modulation-demodulation circuits is corresponding with the signal input part of VCO phase-locked loop circuits to connect, VCO
The signal output part of phase-locked loop circuit is corresponding with the secondary signal input of zero intermediate frequency and PLL to connect.
Advantages of the present invention：As a result of new technologies such as zero intermediate frequency receptions so that the volume of module is substantially reduced, and is solved
Original 230 private network module can not meet the problem of II type concentrator communication module volume requirements are netted by state, and this module is in profile knot
Requirement of state's net II types concentrator to remote communication module is complied fully with structure and electrical apparatus interface design.
Brief description of the drawings
Fig. 1 is the structural representation of the miniaturized high-speed number biography communication module for state's net II type concentrators.
Fig. 2 is MCU controling circuit structure figures.
Fig. 3 is MODEM modulation-demodulation circuit structure charts.
Fig. 4 is radio-frequency switch circuit structure chart.
Fig. 5 is VCO phase-locked loop circuit structure charts.
Embodiment
As shown in figure 1, the miniaturized high-speed number for state's net II type concentrators passes communication module, its structure is MCU controls
First signal output of circuit/input is corresponding with the first signal input/output terminal of MODEM modulation-demodulation circuits to connect, MCU
The secondary signal input/output end of control circuit is corresponding with the first signal input/output terminal of zero intermediate frequency and PLL to connect, MODEM
The secondary signal input/output terminal of modulation-demodulation circuit is corresponding with the secondary signal input/output terminal of zero intermediate frequency and PLL to connect；
Zero intermediate frequency and PLL signal output part are corresponding with the signal input part of PA circuits to connect, and the first of zero intermediate frequency and PLL
Signal input part is corresponding with the signal output part of LAN circuits to connect, the signal output part of PA circuits and the letter of radio-frequency switch circuit
Number input correspondingly connects, and the signal output part of radio-frequency switch circuit is corresponding with the signal input part of LAN circuits to connect；
The signal output part of MODEM modulation-demodulation circuits is corresponding with the signal input part of VCO phase-locked loop circuits to connect, VCO
The signal output part of phase-locked loop circuit is corresponding with the secondary signal input of zero intermediate frequency and PLL to connect.
Receive process are that signal is received by antenna, by radio-frequency switch circuit, are amplified by LNA circuits, its is defeated
Go out signal and be sent to the progress frequency transformation of zero intermediate frequency circuit, caused baseband signal delivers to MODEM modulation-demodulation circuits, demodulates and
Data-signal directly decoded by MCU after be sent to concentrator, MODEM modulation-demodulation circuits are by MCU control circuit.Emission process is
The data for being sent concentrator by MCU control circuit are encoded, and are then delivered to MODEM modulation-demodulation circuits and are produced base band letter
Number, modulated RF signals are produced by the two points modulations of VCO phase-locked loop circuits, by PA circuits, via radio-frequency switch circuit extremely
Antenna is launched.
As shown in Fig. 2 MCU control circuit, its structure includes MCU, crystal oscillator, EEPROM and interface circuit, crystal oscillator with
MCU connections, EEPROM are connected with MCU, interface circuit connection serial ports, MCU and MODEM modulation-demodulation circuits.
EEPROM stores the configuration parameter of MODEM modulation-demodulation circuits, and in other program storages and single-chip microcomputer, crystal oscillator is given
MCU provides clock, and MCU controls MODEM modulation-demodulation circuits by interface circuit,
Encoding and decoding processing is carried out to data-signal simultaneously.
As shown in figure 3, MODEM modulation-demodulation circuits, its structure includes zero intermediate frequency modulation /demodulation, AD/DA conversions, Yi Ji electricity
Pressure conversion；Radio frequency source is provided by VCO phase-locked loop circuits, and zero intermediate frequency modulation /demodulation is connected with AD/DA change-over circuits, AD/DA conversions
Circuit is connected with voltage conversion circuit, and voltage conversion circuit is connected with MCU.
The LNA signals amplified are demodulated to baseband signal and are sent to MODEM modulation /demodulation electricity by receive process, zero intermediate frequency circuit
Road, baseband signal pass through AD/DA change-over circuits, are converted to digital voltage, by voltage conversion circuit, signal is delivered at MCU
Reason.
Emission process, MCU send instructions to MODEM modulation-demodulation circuits, and by voltage conversion, AD/DA change-over circuits will
Signal is converted into radio-frequency carrier signal by zero intermediate frequency modulation-demodulation circuit, and signal is launched via radio-frequency switch circuit.
As shown in figure 4, radio-frequency switch circuit, its structure include RF power amplification PA, RF switch, radio frequency detection circuit,
LNA and radio frequency detection circuit.Radio-frequency switch circuit one end connect PA, the other end connection LNA circuits, radio frequency detection circuit with
MCU connections.
Receive process, antenna reception signal entered RF switch, amplify by LNA circuits, signal then is delivered into MODEM
Modulation-demodulation circuit.Meanwhile the signal that radio frequency detection electric circuit inspection antenna opening receives, by voltage conversion, it is then sent to MCU
Processing control.
Emission process, the signal that MODEM modulation-demodulation circuits are launched, by PA circuits, RF switch is delivered to, by day
Line mouth is launched.
As shown in figure 5, VCO phase-locked loop circuits, its structure includes voltage controlled oscillator, loop filter；Its phase discriminator by
MODEM modulation-demodulation circuits are provided, and voltage controlled oscillator is connected with loop filter, loop filter and MODEM modulation /demodulation electricity
Road connects.
Voltage controlled oscillator provides a signal, and a part passes through frequency dividing and MODEM modulation /demodulation as output, another part
The frequency signal of storage inside circuit makees phase bit comparison, and the voltage signal compared passes through loop filter circuit, then delivers to pressure
Controlled oscillator, voltage controlled oscillator output signal is delivered to compared with internal standard signal again, is shaken by loop filter, then to voltage-controlled
Device is swung, until oscillator output signal is synchronous with standard signal with phase.
Work schedules of the ARM as master chip control module, while realize the communication function to concentrator.In transmitting,
The data transmitted from concentrator are sent to Special Purpose Programmable MODEM chips by MCU codings and encoded, and data-signal is changed
For baseband signal, baseband signal is transformed to modulated wave radiofrequency signal, passes through power amplifier electricity by two points modulation VCO phase-locked loop circuits
Road, fixed amplitude circuit are launched to antenna opening.When receiving, radiofrequency signal passes through zero intermediate frequency circuit, is directly transformed to base band letter
Number, then turned by MODEM chip solutions and be changed to data-signal, decoded by MCU, work order is issued to concentrator.VCO
VCO phase-locked loop circuits use carat wave circuit, it is therefore an objective to obtain extremely low phase noise, phase-locked loop circuit uses integral frequency divisioil side
Formula, modulated terminal use weak coupling, and the purpose of modulation is reached in the case where ensureing phase noise specifications.
State's net II types concentrator is communicated with private network communication module with the communication of II type concentrators by the pin fixed pattern of table 1, phase
Pass interface meets the accurate requirement of state's network mark and is shown in Table 1
Claims (1)
1. for state net II type concentrators miniaturized high-speed number pass communication module, it is characterized in that including MCU control circuit,
MODEM modulation-demodulation circuits, zero intermediate frequency and PLL, PA circuit, LAN circuits, radio-frequency switch circuit, VCO phase-locked loop circuits；Wherein
First signal output of MCU control circuit/input is corresponding with the first signal input/output terminal of MODEM modulation-demodulation circuits
Connect, the secondary signal input/output end phase corresponding with the first signal input/output terminal of zero intermediate frequency and PLL of MCU control circuit
Connect, secondary signal input/output terminal and the zero intermediate frequency and PLL secondary signal input/output terminal pair of MODEM modulation-demodulation circuits
It should connect；
Zero intermediate frequency and PLL signal output part are corresponding with the signal input part of PA circuits to connect, zero intermediate frequency and PLL the first signal
Input is corresponding with the signal output part of LAN circuits to connect, and the signal output part of PA circuits and the signal of radio-frequency switch circuit are defeated
Enter to hold to correspond to and connect, the signal output part of radio-frequency switch circuit is corresponding with the signal input part of LAN circuits to connect；
The signal output part of MODEM modulation-demodulation circuits is corresponding with the signal input part of VCO phase-locked loop circuits to connect, VCO lock phases
The signal output part of loop circuit is corresponding with the secondary signal input of zero intermediate frequency and PLL to connect；
The MCU control circuit, its structure include MCU, crystal oscillator, EEPROM and interface circuit；Crystal oscillator is connected with MCU,
EEPROM is connected with MCU, interface circuit connection serial ports, MCU and MODEM modulation-demodulation circuits；
The MODEM modulation-demodulation circuits, its structure includes zero intermediate frequency modulation /demodulation, AD/DA is changed, and radio frequency source locks phase by VCO
Loop circuit provides；Zero intermediate frequency modulation /demodulation is connected with AD/DA change-over circuits；
The LNA signals amplified are demodulated to baseband signal and are sent to MODEM modulation-demodulation circuits, base band letter by the zero intermediate frequency circuit
Number pass through AD/DA change-over circuits, be converted to digital voltage, by voltage conversion circuit, signal delivered into MCU processing；
The MCU sends instructions to MODEM modulation-demodulation circuits, by voltage conversion, AD/DA change-over circuits, signal is passed through
Zero intermediate frequency modulation-demodulation circuit is converted into radio-frequency carrier signal, and signal is launched via radio-frequency switch circuit；
The radio-frequency switch circuit, its structure include PA, RF switch, LNA and radio frequency detection circuit；PA and RF switch
Connection, LNA are connected with RF switch, and radio frequency detection circuit is located at antenna input port electric circuit inspection radio-frequency input signals；
The antenna reception signal entered RF switch, amplifies by LNA circuits, signal then is delivered into MODEM modulation /demodulation
Circuit；Meanwhile the signal that radio frequency detection electric circuit inspection antenna opening receives, by voltage conversion, it is then sent to MCU processing controls；
The signal that the MODEM modulation-demodulation circuits are launched, by PA circuits, delivers to RF switch, launches by antenna opening
Go out；
The VCO phase-locked loop circuits, its structure include voltage controlled oscillator, loop filter；Its phase discriminator is by MODEM modulation /demodulation
Circuit is provided, and voltage controlled oscillator is connected with loop filter, and loop filter is connected with MODEM modulation-demodulation circuits；
The voltage controlled oscillator provides a signal, and a part passes through frequency dividing and MODEM modulation /demodulation as output, another part
The frequency signal of storage inside circuit makees phase bit comparison, and the voltage signal compared passes through loop filter circuit, then delivers to pressure
Controlled oscillator, voltage controlled oscillator output signal is delivered to compared with internal standard signal again, is shaken by loop filter, then to voltage-controlled
Device is swung, until voltage controlled oscillator output signal is synchronous with standard signal with phase.
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| CN110324409A (en) * | 2019-06-11 | 2019-10-11 | 厦门骐俊物联科技股份有限公司 | A kind of OpenCPU development platform for intelligent electric power concentrator |
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| CN101312362A (en) * | 2007-05-25 | 2008-11-26 | 江苏林洋电子有限公司 | Power line carrier and radio frequency bi-network electrical energy meter, communication method thereof |
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