CN103219874B - Direct-current modulation power supply drain electrode modulation device of unmanned machine - Google Patents
Direct-current modulation power supply drain electrode modulation device of unmanned machine Download PDFInfo
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- CN103219874B CN103219874B CN201310088255.3A CN201310088255A CN103219874B CN 103219874 B CN103219874 B CN 103219874B CN 201310088255 A CN201310088255 A CN 201310088255A CN 103219874 B CN103219874 B CN 103219874B
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Abstract
The invention relates to a direct-current modulation power supply drain electrode modulation device of an unmanned machine and belongs to the technical field of wireless communication. The device comprises an exciter, an amplitude forecast judging device, an encoder, a direct-current modulation power supply and a final-stage power amplifier, wherein the amplitude forecast judging device enables instantaneous amplitude values of signals to be sent by the exciter to be compared with a setting value, and sends comparing results to the encoder; and the encoder codes the comparing results to form binary codes, the direct-current modulation power supply provides electric energy for the final-stage power amplifier according to the binary codes, the direct-current modulation power supply comprises n stages of direct-current voltage units which are in cascade connection through follow current coils, each direct-current voltage unit comprises a battery pack, a fly-wheel diode, an electronic switch and a driving stage, a control end of the electronic switch is connected with the driving stage, and the driving stage controls the electronic switch to be connected and disconnected. The direct-current modulation power supply drain electrode modulation device can improve power-supply efficiency of the unmanned machine.
Description
Technical field
The present invention relates to a kind of unmanned plane HVDC Modulation power supply drain modulation device, particularly relate to the drain modulation device of the high UAV system of a kind of power-efficient, belong to radio communication technology field.
Background technology
Unmanned plane is a kind of based on the not manned aircraft of wireless remotecontrol or self program control.The features such as compared with manned aircraft, it has, and volume is little, cost is low, easy to use, low to do station environmental requirement, battlefield survival is stronger.In modern war, unmanned plane can go deep into forward position, position and one or two hundred kilometers, enemy's rear area and carry out reconnaissance and surveillance to enemy's situation, can as deceiving enemy's bait, interference is implemented to enemy, enemy is attacked, can also communication repeating be carried out, but, unmanned plane needs electric energy when completing its task, if electric energy is once use up, its serving as of task just cannot complete.
Fig. 1 provides the oscillogram of electric energy when being the final power amplifier amplifying signal provided in prior art.As shown in Figure 1, in order to make the u that transmits
fdistortionlessly transmitted by wireless channel, need the supply voltage value E provided to be greater than transmitted maximum amplitude at final power amplifying stage, so, most of energy has been consumed by the form with heat energy.And to OFDM (Orthogonal Frequency DivisionMultiplexing OFDM) system, the peak-to-average ratio of signal is very high, the amplitude com parison of major part signal is low, and only have the Amplitude Ratio of minimum a part of signal larger, and adopt method of supplying power to of the prior art, be fixed the power supply of voltage or electric current to final stage power amplifier, the utilance of power supply is extremely low.
Summary of the invention
For overcoming the shortcoming existed in prior art, goal of the invention of the present invention is to provide a kind of unmanned plane AC/DC modulation power source drain modulation device, and its power utilization rate is high, can reach more than 60%.
For realizing described goal of the invention, the invention provides a kind of UAV system HVDC Modulation power supply drain modulation device, it comprise exciter, amplitude prediction decision device, encoder, HVDC Modulation power supply and for by exciter want amplifying signal to carry out the final power amplifier of power amplification, it is characterized in that, the instantaneous amplitude of the signal that exciter will send by amplitude prediction decision device and set point compare, and send comparative result to encoder; Encoder compared result is carried out coding and is formed binary code, and HVDC Modulation power supply provides electric energy according to binary code to final power amplifier.
Preferably, described HVDC Modulation power supply comprises n level direct current component, each DC voltage unit is by the cascade of afterflow coil, and each DC voltage unit comprises a battery pack, fly-wheel diode, an electronic switch and a driving stage, and the positive pole of battery pack is connected to the negative pole of fly-wheel diode; The positive pole of fly-wheel diode is connected to the first end of electronic switch, and the second end of electronic switch is connected to the negative pole of battery pack, and the control end of electronic switch is connected to driving stage, controls the break-make of electronic switch by driving stage, described n be greater than or equal to 2 integer.
Preferably, exciter comprises symbol mapper, OFDM modulation device, D/A translation circuit, frequency mixer, oscillator at the corresponding levels and prime amplifier, wherein, symbol mapper is used for inputted serial binary code stream being carried out grouping and forms data symbol and data symbol is mapped to complex data sequence, OFDM modulation device is for being modulated to N number of subcarrier by institute's complex data sequence serial to parallel conversion, then carry out IFFT conversion and form parallel time domain data, namely parallel OFDM symbol, described parallel time domain data is carried out the OFDM symbol that parallel serial conversion forms serial, between the OFDM symbol of each serial, then insert the OFDM symbol data flow inserting protection interval of protection gap-forming serial, data flow is carried out digital-to-analogue conversion and is formed analog signal u by D/A translation circuit
i, frequency mixer is used for analog signal u
ithe local oscillation signal u produced with oscillator at the corresponding levels
0carry out up-conversion and form signal u to be sent
h, prime amplifier is to sent signal u
hcarry out amplifying and give final power amplifier and carry out power amplification.
Preferably, described battery pack is solar battery group.
Compared with prior art, unmanned plane HVDC Modulation power supply provided by the invention leaks machine modulating device can bring up to 60% by power utilization rate, and extended the flying distance of unmanned plane.
Accompanying drawing explanation
Fig. 1 provides the oscillogram of electric energy when being the final power amplifier amplifying signal provided in prior art;
Fig. 2 is the composition frame chart of unmanned plane HVDC Modulation power supply drain modulation device provided by the invention;
Fig. 3 is that direct current provided by the invention can the composition frame chart of modulation power source.
Fig. 4 provides the oscillogram of electric energy when being final power amplifier amplifying signal provided by the invention.
Embodiment
Below in conjunction with accompanying drawing, describe the present invention in detail.
Fig. 2 is the composition frame chart of unmanned plane AC/DC modulation power source drain modulation device provided by the invention.As shown in Figure 2, the invention provides a kind of unmanned plane HVDC Modulation power supply drain modulation device, the final power amplifier that it comprises exciter, amplitude prediction decision device, encoder, HVDC Modulation power supply and the signal for being produced by exciter carry out power amplification, the instantaneous amplitude of the signal that exciter will send by amplitude prediction decision device and set point compare, and send comparative result to encoder; Encoder compared result is carried out coding and is formed binary code, and HVDC Modulation power supply provides electric energy according to binary code stream to final power amplifier.Exciter comprises symbol mapper, OFDM modulation device, D/A translation circuit, frequency mixer, oscillator at the corresponding levels and prime amplifier, wherein, symbol mapper is used for inputted serial binary code stream being carried out grouping and forms data symbol and data symbol is mapped to complex data sequence, OFDM modulation device is for carrying out serial to parallel conversion by complex data sequence and being modulated to K subcarrier, and the data on K subcarrier are designated as X
0, X
0..., X
k-1; Then carry out IFFT conversion and form parallel time domain data x
0, x
1..., x
k-1, i.e. x
0, x
1..., x
k-1be an OFDM symbol, described parallel time domain data carried out the OFDM symbol that parallel serial conversion forms serial, between each OFDM symbol, then insert protection gap-forming OFDM symbol; Data flow is carried out digital-to-analogue conversion and is formed analog signal u by D/A translation circuit
i; Frequency mixer is used for analog signal u
ithe local oscillation signal u produced with oscillator at the corresponding levels
0carry out up-conversion and form signal u to be sent
h, prime amplifier is to sent signal u
hcarry out amplifying and give final power and amplify.Amplitude prediction decision device is to x
0, x
0..., x
k-1amplitude and n set point A
t1, set point A
t1..., set point A
tn(wherein, A
t1< A
t1< ..., < A
tn) compare, and sending comparative result to encoder, encoder carries out coding according to comparative result and forms binary code, and HVDC Modulation power supply provides electric energy according to binary code to final stage power amplifier.Undistorted for ensureing signal, usually, set point A
tnbe greater than the maximum of data in all OFDM symbol.
Still as shown in Figure 2, the binary code stream of input carries out grouping and forms data symbol, and data symbol maps through symbol mapper and forms complex data sequence, becomes and open the parallel low rate data streams X of K bar after complex data sequence serial to parallel conversion
0, X
0..., X
k-1; The sample value that IFFT conversion obtains time domain is carried out to it:
wherein, m is the discrete point of frequency domain, and k is the discrete point of time domain.
Fig. 3 is that direct current provided by the invention can the composition frame chart of modulation power source.As shown in Figure 3, described HVDC Modulation power supply comprises n optical transmitting set OT
0, OT
1, OT
2and OT
n, N=n-1, n optical receiver OR
0, OR
1, OR
2and OR
nwith n level direct current component, each DC voltage unit by the cascade of afterflow coil, described n be greater than or equal to 2 integer.Described optical transmitting set the binary control signal that encoder exports is converted to light signal with by Optical Fiber Transmission to corresponding optical receiver.Described optical receiver receives corresponding optical transmitting set and launches the light signal of coming, and the light signal of reception is converted to the signal of telecommunication that controls driving stage realizes being in DC voltage unit at different levels on suspended voltage and low level control part high-voltage isolating 2 with this.
First DC voltage unit M
0comprise each DC voltage unit and comprise a battery pack U
0, a sustained diode
0, electronic switch and a driving stage P
0, electronic switch is CMOS tube CMOS
0, described battery pack U
0positive pole be connected to sustained diode
0negative pole; Sustained diode
0positive pole be connected to CMOS tube CMOS
0drain electrode, CMOS tube CMOS
0source electrode be connected to described battery pack U
0negative pole, CMOS tube CMOS
0grid be connected to driving stage P
0, by driving stage P
0according to optical receiver OR
0the control command that the encoder received sends controls CMOS tube CMOS
0break-make.CMOS tube CMOS
0work on off state, as CMOS tube CMOS
0grid when inputting a high potential, CMOS tube CMOS
0conducting, battery pack U
0negative pole be equivalent to receive sustained diode
0positive pole.Sustained diode
0the voltage at two ends is U
0, upper end is just, lower end is negative.As CMOS tube CMOS
0grid when inputting an electronegative potential, CMOS tube CMOS
0cut-off.Sustained diode
0the voltage at two ends is diode junction voltage.
In like manner, second DC voltage unit M
1comprise a battery pack U
1, a rectifier R
1, a sustained diode
1, electronic switch and a driving stage P
1, electronic switch is CMOS tube CMOS
1, described battery pack U
1positive pole be connected to and be connected to sustained diode
1negative pole; Sustained diode
1positive pole be connected to CMOS tube CMOS
1drain electrode, CMOS tube CMOS
1source electrode battery pack U
1negative pole, CMOS tube CMOS
1grid be connected to driving stage P
1, by driving stage P
1according to optical receiver OR
1the control command that the encoder received sends controls CMOS tube CMOS
1break-make.CMOS tube CMOS
1work on off state, as CMOS tube CMOS
1grid when inputting a high potential, CMOS tube CMOS
1conducting, battery pack U
1negative pole be equivalent to receive sustained diode
1positive pole.Sustained diode
1the voltage at two ends is U
1, upper end is just, lower end is negative.As CMOS tube CMOS
1grid when inputting an electronegative potential, CMOS tube CMOS
1cut-off.Sustained diode
1the voltage at two ends is diode junction voltage.
3rd DC voltage unit M
2comprise a battery pack U
2, a rectifier R
2, a sustained diode
2, electronic switch and a driving stage P
2, electronic switch is CMOS tube CMOS
2, described battery pack U
2, positive pole be connected to the negative pole of fly-wheel diode; Sustained diode
2positive pole be connected to CMOS tube CMOS
2drain electrode, CMOS tube CMOS
2source electrode be connected to battery pack U
2negative pole, CMOS tube CMOS
2grid be connected to driving stage P
2, by driving stage P
2according to optical receiver OR
2the control command that the encoder received sends controls CMOS tube CMOS
2break-make.CMOS tube CMOS
2work on off state, as CMOS tube CMOS
2grid when inputting a high potential, CMOS tube CMOS
2conducting, battery pack U
2negative pole be equivalent to receive sustained diode
2positive pole.Sustained diode
2the voltage at two ends is U
2, upper end is just, lower end is negative.As CMOS tube CMOS
2grid when inputting an electronegative potential, CMOS tube CMOS
2cut-off.Sustained diode
2the voltage at two ends is diode junction voltage.
The like, the n-th DC voltage unit M
ncomprise a battery pack U
n, a rectifier R
n, a sustained diode
n, electronic switch and a driving stage P
n, electronic switch is CMOS tube CMOS
n, described battery pack U
npositive pole be connected to the negative pole of fly-wheel diode; Sustained diode
npositive pole be connected to CMOS tube CMOS
ndrain electrode, CMOS tube CMOS
nsource electrode be connected to battery pack U
nnegative pole, CMOS tube CMOS
ngrid be connected to driving stage P
n, by driving stage P
naccording to optical receiver OR
nthe control command that the encoder received sends controls CMOS tube CMOS
nbreak-make.Metal-oxide-semiconductor CMOS
nwork on off state, as CMOS tube CMOS
ngrid when inputting a high potential, CMOS tube CMOS
nconducting, battery pack U
nnegative pole when in receiving sustained diode
npositive pole.Sustained diode
nthe voltage at two ends is U
n, upper end is just, lower end is negative.As CMOS tube CMOS
ngrid when inputting an electronegative potential, CMOS tube CMOS
ncut-off.Sustained diode
nthe voltage at two ends is diode junction voltage.
1st DC voltage unit M
0with the 2nd DC voltage unit M
1between with afterflow coil L
01be connected, i.e. afterflow coil L
01be connected to sustained diode
0negative pole and sustained diode
1positive pole between; 2nd DC voltage unit M
1with the 3rd DC voltage unit M
2between with afterflow coil L
12be connected, i.e. afterflow coil L
12be connected to sustained diode
1negative pole and sustained diode
2positive pole between; The like, the 3rd DC voltage unit M
2with the 4th DC voltage unit M
3between with afterflow coil L
23be connected.So, if each DC voltage unit M
0, M
1, M
2... and M
nelectronic switch conducting all simultaneously when, can the total output total voltage of modulation power source be U
always=U
0+ U
1+ U
2+ ... + U
n.The magnitude of voltage that in the present invention, each DC voltage unit exports is identical, then total output voltage U
always=nU
0
In the present invention, amplitude prediction decision device is successively by x
kamplitude and each A
t1, A
t2... and A
tncompare, if x
kamplitude be less than A
t1, encoder exports a corresponding binary code, the electronic switch conducting of a DC voltage unit, and the electronic switch cut-off of other DC voltage unit, HVDC Modulation power supply is U to the power supply that final stage power amplifier provides
always=U
0; If x
kamplitude be greater than or equal to A
t1and be less than A
t2, encoder exports a corresponding binary code, the electronic switch conducting of two DC voltage units, the cut-off of the electronic switch of other DC voltage unit, and the total output total voltage of HVDC Modulation power supply is U
always=2U
0; If x
kamplitude be greater than or equal to A
tn-1 and be less than A
tn, encoder exports a corresponding binary code, all DC voltage unit M
0, M
1, M
2... and M
nthe equal conducting of electronic switch, HVDC Modulation power supply is U to the total voltage that final stage power amplifier provides
always=nU
0, effect as shown in Figure 4, as the signal u that will launch
famplitude large time, the electronic switch that can make each DC voltage unit conducting all simultaneously, the power supply U provided
alwaysfor each power supply sum.When the amplitude hour of the signal that will launch, can make partial power conducting, the power supply provided is each DC voltage unit sum of conducting, that is, the voltage provided is little, so, just improves the utilance of power supply.
Although below done to elaborate to the present invention by reference to the accompanying drawings; but those skilled in the art will be appreciated that; under the prerequisite not departing from the present invention's design, any improvement of making based on the present invention and convert the content still belonged in the claimed scope of the present invention.
Claims (3)
1. a HVDC Modulation power supply drain modulation device, it comprise exciter, amplitude prediction decision device, encoder, HVDC Modulation power supply and for by exciter want amplifying signal to carry out the final power amplifier of power amplification, it is characterized in that, the instantaneous amplitude of the signal that exciter will send by amplitude prediction decision device and set point compare, and send comparative result to encoder; Encoder compared result is carried out coding and is formed binary code, HVDC Modulation power supply provides electric energy according to binary code to final power amplifier, described HVDC Modulation power supply comprises n level DC voltage unit, each DC voltage unit is by the cascade of afterflow coil, each DC voltage unit comprises a battery pack, fly-wheel diode, an electronic switch and a driving stage, and the positive pole of battery pack is connected to the negative pole of fly-wheel diode; The positive pole of fly-wheel diode is connected to the first end of electronic switch, and the second end of electronic switch is connected to the negative pole of battery pack, and the control end of electronic switch is connected to driving stage, controls the break-make of electronic switch by driving stage, described n be greater than or equal to 2 integer.
2. HVDC Modulation power supply drain modulation device according to claim 1, it is characterized in that, exciter comprises symbol mapper, OFDM modulation device, D/A translation circuit, frequency mixer, oscillator at the corresponding levels and prime amplifier, wherein, symbol mapper is used for the serial binary code stream of input being carried out grouping and forms data symbol and data symbol is mapped to complex data sequence, OFDM modulation device is for being modulated to N number of subcarrier by complex data sequence serial to parallel conversion, then carry out IFFT conversion and form parallel time domain data, namely parallel OFDM symbol, described parallel time domain data is carried out the OFDM symbol that parallel serial conversion forms serial, between the OFDM symbol of each serial, then insert the OFDM symbol data flow inserting protection interval of protection gap-forming serial, data flow is carried out digital-to-analogue conversion and is formed analog signal u by D/A translation circuit
i, frequency mixer is used for analog signal u
ithe local oscillation signal u produced with oscillator at the corresponding levels
0carry out up-conversion and form signal u to be sent
h, prime amplifier is to sent signal u
hcarry out amplifying and give final power amplifier and carry out power amplification.
3. the HVDC Modulation power supply drain modulation device according to any one of claim 1 to 2, it is characterized in that, described battery pack is solar battery group.
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| CN201310088255.3A CN103219874B (en) | 2013-03-20 | 2013-03-20 | Direct-current modulation power supply drain electrode modulation device of unmanned machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310088255.3A CN103219874B (en) | 2013-03-20 | 2013-03-20 | Direct-current modulation power supply drain electrode modulation device of unmanned machine |
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| CN103219874B true CN103219874B (en) | 2015-03-11 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323568A (en) * | 2011-06-17 | 2012-01-18 | 武汉中原电子集团有限公司 | Radar responding device |
| CN202231789U (en) * | 2011-05-11 | 2012-05-23 | 安徽省广播电视科研所 | Analog-to-digital television transmitter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004140977A (en) * | 2002-10-21 | 2004-05-13 | Canon Inc | Gate drive circuit |
| KR20120080908A (en) * | 2011-01-10 | 2012-07-18 | 페어차일드코리아반도체 주식회사 | Apparatus for controlling bleed switch, power supply, and method for driving power supply |
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2013
- 2013-03-20 CN CN201310088255.3A patent/CN103219874B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202231789U (en) * | 2011-05-11 | 2012-05-23 | 安徽省广播电视科研所 | Analog-to-digital television transmitter |
| CN102323568A (en) * | 2011-06-17 | 2012-01-18 | 武汉中原电子集团有限公司 | Radar responding device |
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