CN107612133A - Aviation high-frequency wireless communication system flows redundant power starting with full load system - Google Patents
Aviation high-frequency wireless communication system flows redundant power starting with full load system Download PDFInfo
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- CN107612133A CN107612133A CN201711003383.8A CN201711003383A CN107612133A CN 107612133 A CN107612133 A CN 107612133A CN 201711003383 A CN201711003383 A CN 201711003383A CN 107612133 A CN107612133 A CN 107612133A
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Abstract
The invention discloses a kind of aviation high-frequency wireless communication system to flow redundant power starting with full load system, it includes two blocks of power supply redundancy plug-in units in parallel being connected with high-frequency wireless communication system, photovoltaic conversion circuit is provided with power supply redundancy plug-in unit, the connection current sample module of photovoltaic conversion circuit, connection output redundant circuit, equalizing control circuit, the constant-current control circuit of current sample module；Export redundant circuit connection voltage sample module；Voltage sample module connects governor circuit；The current signal output end of equalizing control circuit and constant-current control circuit connects governor circuit；Governor circuit connects the control terminal of photovoltaic conversion circuit；The current equalizing bus bar end of equalizing control circuit in two power supply redundancy plug-in units is connected with each other；The voltage output end connection high-frequency wireless communication system of output redundant circuit in two power supply redundancy plug-in units.It can allow high-frequency wireless communication system normally to start, and two blocks of parallel connection power supply plates flow redundancy of effort, can improve the life and reliability of power-supply system.
Description
Technical field
The invention belongs to high frequency wireless communication technology field, specially a kind of aviation high-frequency wireless communication electric supply system
Redundant power starting with full load system is flowed, can be applied to various civil aviaton's high-frequency wireless communication systems and helicopter high frequency channel radio
Believe power-supply system.
Background technology
Aviation high-frequency wireless communication main function of system is：Transmission information is realized in the propagation in space using electromagnetic wave,
Realize the communication between air control department and aircraft.The stability of high-frequency wireless communication system directly affects blank pipe department with flying
Communication between machine.Existing high-frequency wireless communication system has two kinds of power supply modes：First way is monolithic power panel to system
Power supply, its shortcoming is that system reliability has much room for improvement, and when power panel breaks down, high-frequency wireless communication system, which can power off, to be caused
Blank pipe department and aircraft lost contact.The second way is to carry out parallel current-sharing power supply using two pieces of power panels, when one of power supply
When plate breaks down, one piece of power panel can continue to give high-frequency wireless communication system power supply in addition；Can greatly improve high frequency without
The stability of line communication system, it is ensured that high-frequency wireless communication system never powers off.But high-frequency wireless communication system is being opened
When machine starts, because system load exceedes the load value output of monolithic power panel（Caused by system large capacitive load）, add
Two pieces of parallel redundancy power panels start time disunity, and so as to cause power panel to be in overcurrent protection hiccup state, high frequency is wireless
Communication system can not start.
The content of the invention
The purpose of the present invention is to be directed to problem above, there is provided a kind of aviation high-frequency wireless communication system, which flows redundant power, to be expired
Activation system is carried, allows high-frequency wireless communication system normally to start, two blocks of parallel connection power supply plates flow redundancy of effort, can improve power supply
The service life of system, improve its reliability.
To realize object above, the technical solution adopted by the present invention is：Aviation high-frequency wireless communication system flows redundant electric
Source starting with full load system, it includes two blocks of power supply redundancy plug-in units in parallel being connected with high-frequency wireless communication system, and respectively the
One power supply redundancy plug-in unit and second source redundant cards；Photovoltaic conversion circuit, the electricity are provided with the power supply redundancy plug-in unit
Press the output end connection current sample module of conversion circuit, the output voltage terminal connection output redundant electric of the current sample module
Road, output current end connection equalizing control circuit and constant-current control circuit；The voltage sampling signal end of the output redundant circuit
Connect voltage sample module；The sampled voltage output end connection governor circuit of the voltage sample module；The sharing control electricity
The current signal output end of road and constant-current control circuit is all connected with governor circuit；The governor circuit signal output part connects voltage
The control terminal of conversion circuit；The stream of the first power supply redundancy plug-in unit and the equalizing control circuit in second source redundant cards
Bus end is connected with each other；The voltage of output redundant circuit in the first power supply redundancy plug-in unit and second source redundant cards is defeated
Go out end connection high-frequency wireless communication system.
Further, the governor circuit is UCC28250 chip main control circuits.
Further, the equalizing control circuit includes the photoelectrical coupler VI1 being connected with each other and flows driving amplifier
U1；The current equalizing bus bar end for flowing driving amplifier U1 is connected with each other；The second input of the stream driving amplifier U1 is defeated
Go out end 2 and be connected in parallel resistance R12, R13；The resistance R13 other ends are connected to and flowed by the resistance R15 and electric capacity C7 of series connection
Driving amplifier U1 positive input 6；The resistance R12 other ends connection resistance R24；The resistance R12 and resistance R24's
Connecting node is voltage sampling signal input Vout-；The second pin 2 of the photoelectrical coupler VI1 is connected in parallel electric capacity C8
With breakdown diode N1 negative pole, the connecting node between them is level output end C_LIM；The photoelectrical coupler VI1's
4th pin connects the primary side signal end EA of power supply redundancy plug-in unit.
Further, in the equalizing control circuit, the 5th input/output port 5 for flowing driving amplifier U1 connects
Connect triode V1 emitter stage；The colelctor electrode connection resistance R2 and voltage sampling signal output end vo ut+ of the triode V1, base
Pole passes through resistance R6 connection power supplys；Described flow between the second input/output terminals of driving amplifier U1 2 and resistance R15 is in series with electricity
Hold C6；The resistance R24 connection resistance R16, the resistance R16 connection electric capacity C8, breakdown diode N1 positive poles, resistance R14, institute
State resistance R14 other ends connection voltage sampling signal output end vo ut+.
Further, the gain for flowing driving amplifier U1 is 1.
Further, the in-phase proportion that the constant-current control circuit includes being made up of amplifier N2A and amplifier N2B amplifies
Device；The reverse input end that amplifier N2B output voltage terminal passes through R19 connection amplifiers N2A.
Further, the in-phase input end of the amplifier N2B is connected in parallel resistance R17 and resistance R20, and resistance R17 is another
One end connection voltage sampling signal input Vout-；The resistance R20 other ends are grounded；The reverse input end of the amplifier N2B leads to
Cross resistance R21 ground connection；The reverse input end of the amplifier N2B is connected with output voltage terminal by resistance R23.
Further, resistance R22 and electric capacity are in series between the reverse input end and output voltage terminal of the amplifier N2A
C11；Electric capacity C12 is also in series between amplifier N2A reverse input end and output voltage terminal；Electric capacity C12 and resistance R22 and electricity
It is in parallel to hold C11；The output voltage terminal connection level output end C_LIM of the amplifier N2A.
Further, the output voltage terminal of the amplifier N2A is connected in series resistance R18 and two diode V2 in parallel
Negative pole after reconnect level output end C_LIM.
Beneficial effects of the present invention：
The present invention is flowed redundant power supply using two pieces of power panels, when one of power panel breaks down, one piece in addition
Power panel can continue to give high-frequency wireless communication system power supply；The stability of communication system can be improved.Started by power panel
When sharing control is transformed into by current constant control, solve start starting with full load（Caused by system large capacitive load, plus two pieces simultaneously
Join redundant electric source plate and start time disunity）Power panel overcurrent protection hiccup problem；Two pieces of power panels can be fully loaded with parallel connection simultaneously
Stream starts, and load can reach two pieces of power panel load sums.
Brief description of the drawings
Fig. 1 is power supply redundancy current-equalizing system theory diagram.
Fig. 2 is the equalizing control circuit figure in power supply redundancy plug-in unit in the present invention.
Fig. 3 is the constant-current control circuit figure in power supply redundancy plug-in unit in the present invention.
Embodiment
In order that those skilled in the art more fully understand technical scheme, the present invention is entered below in conjunction with the accompanying drawings
Row is described in detail, and the description of this part is only exemplary and explanatory, should not there is any limitation to protection scope of the present invention
Effect.
As shown in Figure 1-Figure 3, concrete structure of the invention is：Aviation high-frequency wireless communication system flows redundant power and is fully loaded with
Activation system, it includes two blocks of power supply redundancy plug-in units in parallel being connected with high-frequency wireless communication system, respectively the first power supply
Redundant cards and second source redundant cards；Photovoltaic conversion circuit, the photovoltaic conversion are provided with the power supply redundancy plug-in unit
The output end connection current sample module of circuit, the output voltage terminal connection output redundant circuit of the current sample module are defeated
Go out current terminal connection equalizing control circuit and constant-current control circuit；The voltage sampling signal end connection electricity of the output redundant circuit
Press sampling module；The sampled voltage output end connection governor circuit of the voltage sample module；The equalizing control circuit and perseverance
The current signal output end of flow control circuit is all connected with governor circuit；The governor circuit signal output part connection photovoltaic conversion electricity
The control terminal on road；The current equalizing bus bar end of the first power supply redundancy plug-in unit and the equalizing control circuit in second source redundant cards
It is connected with each other；The voltage output end of output redundant circuit in the first power supply redundancy plug-in unit and second source redundant cards connects
Connect high-frequency wireless communication system.
Preferably, the governor circuit is UCC28250 chip main control circuits.
Preferably, the equalizing control circuit includes the photoelectrical coupler VI1 being connected with each other and flows driving amplifier U1；
The current equalizing bus bar end for flowing driving amplifier U1 is connected with each other；Second input/output terminal for flowing driving amplifier U1
2 are connected in parallel resistance R12, R13；The resistance R13 other ends are connected to stream by the resistance R15 and electric capacity C7 of series connection and driven
Amplifier U1 positive input 6；The resistance R12 other ends connection resistance R24；The resistance R12 and resistance R24 connection
Node is voltage sampling signal input Vout-；The second pin 2 of the photoelectrical coupler VI1 is connected in parallel electric capacity C8 and hit
Diode N1 negative pole is worn, the connecting node between them is level output end C_LIM；The 4th of the photoelectrical coupler VI1
Pin connects the primary side signal end EA of power supply redundancy plug-in unit.
Preferably, in the equalizing control circuit, the 5th input/output port 5 for flowing driving amplifier U1 connects
Triode V1 emitter stage；The colelctor electrode connection resistance R2 and voltage sampling signal output end vo ut+ of the triode V1, base stage
Pass through resistance R6 connection power supplys；Described flow between the second input/output terminals of driving amplifier U1 2 and resistance R15 is in series with electric capacity
C6；The resistance R24 connection resistance R16, the resistance R16 connection electric capacity C8, breakdown diode N1 positive poles, resistance R14, it is described
Resistance R14 other ends connection voltage sampling signal output end vo ut+.
Preferably, the gain for flowing driving amplifier U1 is 1.
Preferably, the in-phase proportion that the constant-current control circuit includes being made up of amplifier N2A and amplifier N2B amplifies
Device；The reverse input end that amplifier N2B output voltage terminal passes through R19 connection amplifiers N2A.
Preferably, the in-phase input end of the amplifier N2B is connected in parallel resistance R17 and resistance R20, and resistance R17 is another
End connection voltage sampling signal input Vout-；The resistance R20 other ends are grounded；The reverse input end of the amplifier N2B passes through
Resistance R21 is grounded；The reverse input end of the amplifier N2B is connected with output voltage terminal by resistance R23.
Preferably, resistance R22 and electric capacity are in series between the reverse input end and output voltage terminal of the amplifier N2A
C11；Electric capacity C12 is also in series between amplifier N2A reverse input end and output voltage terminal；Electric capacity C12 and resistance R22 and electricity
It is in parallel to hold C11；The output voltage terminal connection level output end C_LIM of the amplifier N2A.
Preferably, the output voltage terminal of the amplifier N2A is connected in series resistance R18's and two diode V2 in parallel
Level output end C_LIM is reconnected after negative pole.
Concrete principle of the present invention is as follows：
As shown in figure 1, the sampled voltage signal come out from power supply redundancy plug-in unit output end is sent into governor circuit, sampled current signals
Flow equalizing circuit and constant current source control circuit are sent into, is then sent into current signal together with constant-current source control power supply by flow equalizing circuit
Governor circuit, realize control accurate to power panel voltage and current.
As shown in figure 1, it is sent into governor circuit, sample rate current letter from the first power supply redundancy plug-in unit output end sampled voltage signal
Number flow equalizing circuit and constant current source control circuit are sent into, then say that current signal is sent together with constant-current source control power supply by flow equalizing circuit
Enter governor circuit, realize control accurate to power panel voltage and current；First power supply redundancy plug-in unit voltage signal and current signal
Processing is similarly shown, and the first power supply redundancy plug-in unit is connected with second source redundant cards current equalizing bus bar.Power-supply system is at full capacity
During startup, two pieces of power panels synchronization can not start again, and the load of the power panel institute band started first can exceed power panel institute
Power output is designed, constant current transformation working condition is entered by constant-current control circuit, to ensure that power panel can be normal after starting
Output, the power panel after starting first are being less than rated voltage into constant current transformation working condition output voltage.Treat two blocks of power supplys
When plate all starts, the output current of each piece of power panel is respectively less than rated operational current, and two pieces of power source single-boards enter fixed-voltage altering-current
Pattern works, while two pieces of power panels are under respective equalizing control circuit, the power needed for uniform sharing system.
As shown in Fig. 2 the equalizing control circuit of the first power supply redundancy plug-in unit and constant-current control circuit be as shown in Fig. 2, second
The equalizing control circuit of power supply redundancy plug-in unit is consistent with the first power supply redundancy plug-in unit with constant current source control circuit, and its specific works is former
Reason is as follows：Current sense resistor R24 detects one and the first power supply redundancy plug-in unit in the output end of the first power supply redundancy plug-in unit
The proportional voltage signal of output current, voltage signal Vout- are sent into the current detecting being made up of resistance R12 and R13 and amplified
Device, the output signal of electric circuit inspection amplifier are in ratio with the first power supply redundancy plug-in unit output current, and the signal is sent into stream and driven
The positive input of dynamic amplifier, i.e. chip U1 the 6th pin VEAO, the gain that the control chip flows driving amplifier are 1,
So the output voltage of stream driving amplifier and current sense amplifier is equal；That is the error amplification letter of chip U1 the 8th pin
The voltage above the 5th pin VADJ that number VEAO passes through control chip U1 changes the voltage above stream adjustment resistance R2, passes through
Change the voltage on adjustment resistance R2 to adjust the output voltage of the first power supply redundancy plug-in unit, so as to realize that the first power supply redundancy is inserted
Stream between part and second source redundant cards.
But the power supply current-equalizing system formed in the first power supply redundancy plug-in unit and second source redundant cards, due to the first electricity
Source redundant cards and the startup of second source redundant cards are inconsistent, and one of power panel will necessarily be caused to enter starting with full load shape
State, to solve this problem, constant-current control circuit is added in every piece of power panel, as shown in figure 3, its specific work process is：
By voltage sampling signal Vout- be sent into by resistance R17, R20, R21, R23 and amplifier N2A the in-phase proportions that form of N2B amplify
Device, in-phase proportion amplified signal and VREF(2.5V) is compared, and by controlling C_LIM level, is reduced output voltage, is made electricity
Source plate output current is controlled within current-limiting points.
When two pieces of power panels carry out parallel current-sharing power supply, the output of the power panel first started by constant-current control circuit adjustment
Voltage, output current is set to realize current constant control；After another piece of power panel starts, two blocks of electricity are realized by equalizing control circuit
Parallel current-sharing works between source plate.
Current sampling signal in-phase proportion amplifies, and the PWM outputs of control main control chip, adjusts output voltage, electric current is, control output current is within over-current protection point.
Example：When power supply current-equalizing system starting with full load, first start due to one of, the power panel output loading first started
More than nominal load in a flash, current detecting VoutThe scaling signal of in-phase proportion of-voltage is more than VREF(2.5V), will
It is level that C_LIM signals, which are drawn, the V11 conductings of control optocoupler, the primary side signal EA of power panel is dragged down, main control chip is closed PWM
Pulse exports, so that output voltage VOUT+ voltage pull-down, according toSo that output current control is protected in power panel excessively stream
Within shield point, so as to realize startup current constant control.After another piece of power panel starts, pass through the sharing control of two pieces of power panels
Flowed between two pieces of power panels of circuit realiration, improve the service life of two pieces of power panels, it is ensured that high-frequency wireless communication power-supply system
Highly reliable operation, it is ensured that system never powers off.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or equipment including a series of elements not only include those key elements, and
And also include the other element being not expressly set out, or also include for this process, method, article or equipment institute inherently
Key element.
Specific case used herein is set forth to the principle and embodiment of innovation and creation, and above example is said
It is bright to be only intended to help the method and its core concept for understanding the present invention.Described above is only the preferred embodiment of the present invention,
It should be pointed out that due to the finiteness of literal expression, and unlimited concrete structure objectively be present, for the common of the art
For technical staff, under the premise without departing from the principles of the invention, some improvement, retouching or change can also be made, can also
Above-mentioned technical characteristic is combined by rights；These improve retouching, change or combination, or not improved by invention
Design and technical scheme directly apply to other occasions, are regarded as protection scope of the present invention.
Claims (9)
1. aviation high-frequency wireless communication system flows redundant power starting with full load system, it includes connecting with high-frequency wireless communication system
The two blocks of power supply redundancy plug-in units in parallel connect, respectively the first power supply redundancy plug-in unit and second source redundant cards；Its feature exists
In being provided with photovoltaic conversion circuit in the power supply redundancy plug-in unit, the output end connection current sample of the photovoltaic conversion circuit
Module, the output voltage terminal connection output redundant circuit of the current sample module, output current end connection equalizing control circuit
And constant-current control circuit；The voltage sampling signal end connection voltage sample module of the output redundant circuit；The voltage sample
The sampled voltage output end connection governor circuit of module；The current signal output of the equalizing control circuit and constant-current control circuit
End is all connected with governor circuit；The control terminal of the governor circuit signal output part connection photovoltaic conversion circuit；First power supply
The current equalizing bus bar end of redundant cards and the equalizing control circuit in second source redundant cards is connected with each other；First power supply is superfluous
Remaining plug-in unit connects high-frequency wireless communication system with the voltage output end of the output redundant circuit in second source redundant cards.
2. aviation high-frequency wireless communication system according to claim 1 flows redundant power starting with full load system, its feature
It is, the governor circuit is UCC28250 chip main control circuits.
3. aviation high-frequency wireless communication system according to claim 1 flows redundant power starting with full load system, its feature
It is, the equalizing control circuit includes the photoelectrical coupler VI1 being connected with each other and flows driving amplifier U1；The stream drives
Dynamic amplifier U1 current equalizing bus bar end is connected with each other；Second input/output terminal for flowing driving amplifier U1（2）Parallel connection is even
Connecting resistance R12, R13；The resistance R13 other ends are connected to by the resistance R15 and electric capacity C7 of series connection and flow driving amplifier
U1 positive input（6）；The resistance R12 other ends connection resistance R24；The resistance R12 and resistance R24 connecting node
For voltage sampling signal input Vout-；The second pin of the photoelectrical coupler VI1（2）It is connected in parallel electric capacity C8 and breakdown
Diode N1 negative pole, the connecting node between them are level output end C_LIM；The 4th of the photoelectrical coupler VI1 draws
Pin connects the primary side signal end EA of power supply redundancy plug-in unit.
4. aviation high-frequency wireless communication system according to claim 3 flows redundant power starting with full load system, its feature
It is, in the equalizing control circuit, the 5th input/output port for flowing driving amplifier U1（5）Connecting triode V1
Emitter stage；The colelctor electrode connection resistance R2 and voltage sampling signal output end vo ut+, base stage of the triode V1 passes through resistance
R6 connection power supplys；It is described to flow driving amplifier the second input/output terminals of U1（2）Electric capacity C6 is in series between resistance R15；Institute
State resistance R24 connection resistance R16, the resistance R16 connection electric capacity C8, breakdown diode N1 positive poles, resistance R14, the resistance
R14 other ends connection voltage sampling signal output end vo ut+.
5. aviation high-frequency wireless communication system according to claim 3 flows redundant power starting with full load system, its feature
It is, the gain for flowing driving amplifier U1 is 1.
6. aviation high-frequency wireless communication system according to claim 3 flows redundant power starting with full load system, its feature
It is, the constant-current control circuit includes the in-phase proportion amplifier being made up of amplifier N2A and amplifier N2B；Amplifier N2B
The output voltage terminal reverse input end that passes through R19 connection amplifiers N2A.
7. aviation high-frequency wireless communication system according to claim 6 flows redundant power starting with full load system, its feature
It is, the in-phase input end of the amplifier N2B is connected in parallel resistance R17 and resistance R20, resistance R17 other ends connection voltage
Sampled signal input Vout-；The resistance R20 other ends are grounded；The reverse input end of the amplifier N2B is connect by resistance R21
Ground；The reverse input end of the amplifier N2B is connected with output voltage terminal by resistance R23.
8. aviation high-frequency wireless communication system according to claim 7 flows redundant power starting with full load system, its feature
It is, resistance R22 and electric capacity C11 is in series between the reverse input end and output voltage terminal of the amplifier N2A；Amplifier
Electric capacity C12 is also in series between N2A reverse input end and output voltage terminal；Electric capacity C12 is in parallel with resistance R22 and electric capacity C11；
The output voltage terminal connection level output end C_LIM of the amplifier N2A.
9. aviation high-frequency wireless communication system according to claim 8 flows redundant power starting with full load system, its feature
It is, the output voltage terminal of the amplifier N2A connects again after being connected in series resistance R18 and two diode V2 in parallel negative pole
Meet level output end C_LIM.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711003383.8A CN107612133B (en) | 2017-10-24 | 2017-10-24 | Full-load starting system for current-sharing redundant power supply of aviation high-frequency wireless communication system |
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| CN201711003383.8A CN107612133B (en) | 2017-10-24 | 2017-10-24 | Full-load starting system for current-sharing redundant power supply of aviation high-frequency wireless communication system |
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| CN108521216A (en) * | 2018-04-17 | 2018-09-11 | 四方继保（武汉）软件有限公司 | A kind of control circuit suitable for DC-DC power source parallel current-sharing dilatation |
| CN108767967A (en) * | 2018-05-04 | 2018-11-06 | 新华三技术有限公司 | A kind of communication equipment, power module and its processing method |
| CN110829798A (en) * | 2019-11-07 | 2020-02-21 | 山东艾诺仪器有限公司 | Module series type high-voltage direct-current power supply |
| CN112162583A (en) * | 2020-10-12 | 2021-01-01 | 北京计算机技术及应用研究所 | Current-sharing control circuit supporting overcurrent starting |
| CN112383235A (en) * | 2020-12-29 | 2021-02-19 | 郴州市福瑞康电子有限公司 | Power supply device for parallel connection of LED outdoor advertising screens |
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| CN114629177A (en) * | 2022-05-13 | 2022-06-14 | 山东艾诺仪器有限公司 | Aviation ground static transformer power supply parallel capacity expansion device without interconnection signal line |
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