CN106656903A - Microwave transmission system - Google Patents
Microwave transmission system Download PDFInfo
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- CN106656903A CN106656903A CN201611098349.9A CN201611098349A CN106656903A CN 106656903 A CN106656903 A CN 106656903A CN 201611098349 A CN201611098349 A CN 201611098349A CN 106656903 A CN106656903 A CN 106656903A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 38
- 230000008054 signal transmission Effects 0.000 claims abstract description 10
- 238000004088 simulation Methods 0.000 claims description 16
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims 1
- 238000004891 communication Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000036039 immunity Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/38—Demodulator circuits; Receiver circuits
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmitters (AREA)
Abstract
The invention belongs to the technical field of wireless communication, specifically a microwave transmission system. The microwave transmission system comprises an input converter, an emission system, a receiving system, and an output converter, wherein the input converter is used for converting a digital control signal and a digital sensor signal of a micro robot into two paths of signals: an analogue control signal and an analogue sensor signal; the emission system is used for overlapping and modulating the analogue control signal and the analogue sensor signal into the same frequency band, and then outputting and sending the signals; the receiving signal is used for receiving the signals sent by the emission system, separating the signals to recover the signals as the analogue control signal and the analogue sensor signal, and outputting the signals to the output converter; the output converter is used for converting the analogue control signal and the analogue sensor signal into the digital control signal and the digital sensor signal. The transmission system disclosed by the invention is safer and more reliable to the signal transmission, strong in interference rejection, and good in secrecy performance.
Description
【Technical field】
The present invention relates to wireless communication technology field, more particularly to a kind of microwave transmission system.
【Background technology】
Microwave refers to AC signal of the frequency in 300MHz to 300GHz, corresponding wavelength between 1m and 1mm.It is micro-
Ripple transmission is a kind of wireless transmission method, transmission frequency bandwidth, transmission information amount are big, linear transmission interfere with each other it is less, using micro-
The features such as micro robot information of waveshape transmission has strong interference immunity, encryption good.
In daily life, many times will on a circuit transmitting multiplex information, in order to avoid interfering, a line
Frequency band on road shared by each channel must stagger, therefore the channel that can be accommodated in certain frequency range is limited, even if adopting
With digital communication, the information capacity of circuit still depends on the frequency bandwidth of circuit.Microwave transmission has stronger anti-interference energy
Power, is due to its transmission frequency bandwidth, it is allowed to using transmission means such as frequency modulation or pulse code modulation, and transmission information amount is big, transmission
It is relatively stable.The encryption of microwave information transfer is good, is widely used in various types of communication system.Microwave telecommunication system not only frequency band
Width, but also have the advantages that to be easy to set up, mobility is good, good confidentiality.Cellular mobile telephone, microwave telephony common at present
Net, satellite television net etc., belong to microwave telecommunication system.
From wired to wireless development, domestic technology in this respect have developed rapidly for the transmission of robot information.Shanghai traffic
University's automation research utilizes WLAN, is communicated using model of client/server, and base station and robot are distinguished
Representative client and server, robot receives the control information of base station, and provides service to base station, and robot is sent to
The information of base station is mainly the sensor information and status information of robot, so successfully realizes the friendship of multirobot information
The coordination of mutual and behavior.Harbin Institute of Technology's Research on Intelligent Robots room carries out radio communication using WLAN, success
Control to the full autonomous robot of HIT-II types and the transmission of information are realized, robot passes through the sensor senses information of itself
And feed back to long-distance user.Hefei China Science ＆ Technology University carries out radio communication using radio receiving transmitting module, accurately and timely
Data message used by transmission control robot, completes the radio communication for the match of F-180 mini-footballs mobile robot
The design of system.
But the report of the current application still without microwave transmission system in the signal transmission of micro robot.
【The content of the invention】
In view of the above, it is necessary to provide a kind of microwave transmission system, the microwave transmission system can be applied small
In the signal transmission of humanoid robot, with bandwidth, strong interference immunity, encryption is good, penetration capacity is strong the characteristics of.
To reach above-mentioned purpose, the technical solution adopted in the present invention is：
A kind of microwave transmission system, including input translator, emission system, reception system, output translator, the input
Converter is used to that the digital control signal and sensor signal of micro robot to be transformed into the control signal and biography of simulation
Sensor signal two paths of signals；
The emission system is used for the control signal and sensor signal two paths of signals superposition modulated of simulation in same frequency
With interior and export sending signal；
The reception system receives the signal that the emission system sends, and is separated, and reverts to the control letter of simulation
Number and sensor signal two paths of signals, and export to output translator；
The output translator is used to that the control signal of simulation and sensor signal two paths of signals to be transformed into the control of numeral
Signal processed and sensor signal.
Further, the emission system include intermediate frequency amplifier, frequency mixer, local oscillator, radio frequency band filter,
Power amplifier, duplexer and antenna, the intermediate frequency amplifier receives the control signal and sensor signal of simulation and amplifies, after
It is mixed by the frequency mixer with the local oscillation signal of the local oscillator, up-converts to radiofrequency signal, radiofrequency signal is through institute
State radio frequency band filter, the noise outside rejection band, then described in Jing power amplifier amplify, eventually pass the duplexer by
The antenna is launched.
Further, the reception system includes radio frequency band filter, low-noise amplifier, frequency mixer, power distribution
Device, local oscillator, intermediate-frequency filter, intermediate frequency amplifier, duplexer and antenna, the radiofrequency signal that the antenna is received passes through
The duplexer is received, and is filtered by the radio frequency band filter, it is allowed to which the useful signal in frequency band passes through, and suppresses
Out-of-band unwanted signal, enters back into the low-noise amplifier and is amplified faint radiofrequency signal, after amplification
Radiofrequency signal is divided into equal I, Q two paths of signals, then the high-frequency signal with the local oscillator by the power divider
It is mixed into the frequency mixer together, down-converts to intermediate-freuqncy signal, then filters through the intermediate-frequency filter, then intermediate frequency described in Jing
Amplifier amplifies, and eventually passes the output translator and is converted to data signal.
Further, the emission system by simulate control signal and sensor signal two paths of signals superposition modulated mode
It is to adopt QAM modulation.
Further, the emission system is by after the control signal simulated and sensor signal two paths of signals superposition modulated
Signal transmission frequencies are 400MHz, size is 5dBm.
Further, the input translator and output translator adopt A/D converters.
The invention has the advantages that：
The present invention equals the control signal or sensor signal after mixing by power divider in the receiving portion of system
It is divided into I, Q two-way to be transmitted, is transmitted using orthogonal I, Q two paths of signals, one times of bandwidth can be saved, makes signal more
It is efficiently transmitted, when wherein all the way signal can not continue transmission due to the reason such as breaking down, interrupting, another road signal can
To continue transmission, it is ensured that signal can successfully be transferred to destination.Transmission safety and reliability of such Transmission system to signal,
With stronger antijamming capability, security performance is good, in can be applicable to the signal transmission of micro robot.
【Description of the drawings】
Fig. 1 is the structural representation of one embodiment of the invention microwave transmission system；
【Specific embodiment】
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.
As shown in figure 1, a kind of microwave transmission system of the present embodiment, including input translator, emission system, reception system
System, output translator, the input translator is used to become the digital control signal of micro robot and sensor signal
Change the control signal and sensor signal two paths of signals of simulation into；
The emission system is used for the control signal and sensor signal two paths of signals superposition modulated of simulation in same frequency
With interior and export sending signal；
The reception system receives the signal that the emission system sends, and is separated, and reverts to the control letter of simulation
Number and sensor signal two paths of signals, and export to output translator；
The output translator is used to that the control signal of simulation and sensor signal two paths of signals to be transformed into the control of numeral
Signal processed and sensor signal.
The emission system includes intermediate frequency amplifier 121, frequency mixer 122, local oscillator 123, radio frequency band filter
124th, power amplifier 125, duplexer 126 and antenna 127, the simulation of the receives input converter 110 of the intermediate frequency amplifier 121
Control signal and sensor signal are simultaneously amplified, after it is mixed by the frequency mixer 122 with the local oscillation signal of the local oscillator 123
Frequently, radiofrequency signal is up-converted to, radiofrequency signal is through the radio frequency band filter 124, the noise outside rejection band, then Jing institutes
State power amplifier 125 to amplify, eventually pass the duplexer 126 and launched by the antenna 127.
The reception system includes radio frequency band filter 131, low-noise amplifier 132, frequency mixer 134, power distribution
Device 133, local oscillator 135, intermediate-frequency filter 136, intermediate frequency amplifier 137, duplexer 126 and antenna 127, the antenna
127 radiofrequency signals for receiving are received by the duplexer 126, are filtered by the radio frequency band filter 131, are permitted
Perhaps the useful signal in frequency band passes through, and the unwanted signal outside rejection band, entering back into the low-noise amplifier 132 will
Faint radiofrequency signal is amplified, and 133 points by the power divider of the radiofrequency signal after amplification is equal I, Q two-way
Signal, then be mixed into the frequency mixer 134 together with the high-frequency signal of the local oscillator 135, down-convert to intermediate frequency letter
Number, then filter through the intermediate-frequency filter 136, then intermediate frequency amplifier 137 amplifies described in Jing, eventually passes the output transform
Device 140 is converted to data signal, completes the transmission to robot control signal and sensor signal, and the microwave for realizing robot leads to
Letter.
In another specific embodiment, emission system is that frequency is 400MHz, size is 5dBm to the modulated process of carrier wave
Baseband signal be input into by input translator 110, amplified device 121 is amplified, with local oscillator 123 provide frequency be
The high-frequency signal of 4600MHz together enter frequency mixer, be mixed by frequency mixer 122, baseband signal originally Jing after frequency spectrum shift,
The high frequency modulated signal of 5GHz is transformed to, moving can be transmitted high-frequency band, the effect of two bandpass filters 124 is
Spurious signal is filtered, suppresses interference, then the power of modulated signal is improved through power amplifier 125, be up to meet transmitting
After power, it is possible to launched by antenna.
Reception system is demodulated to the high frequency modulated signal after modulation, recovers the original control signal of micro robot
And sensor signal, rf frequency be 5000MHz, size for 40dBm high frequency modulated signal Jing low-noise amplifier 132 by its
Amplify, reduce noise, suppress interference, high frequency modulated signal is divided into by equal two paths of signals by power divider 133, and with
Local oscillator 135 provides the high-frequency signal that frequency is 4600MHz and enters frequency mixer 134 together, is mixed by frequency mixer 134,
High frequency modulated signal down-converts to the signal of 400MHz, and respectively Jing bandpass filters 136 filter spuious letter to I, Q two-way orthogonal signalling
Number, then signal is amplified through amplifier 137, respectively the control signal and sensor signal of output device people, completes
Demodulating process of the reception system to signal, realizes the transmission of signal.
Thus, transmitting equipment sends modulated control signal or sensor signal, after reception system process,
Export consistent with the control signal or sensor signal of the 5dBm of transmitting terminal input.Thus from the input input of transmitting equipment
Control signal or the sensor signal signal that is reduced in reception system output end with original same nature, realize robot
The transmission of control signal and sensor signal in microwave environment.
In the present embodiment, the emission system by simulate control signal and sensor signal two paths of signals superposition modulated side
Formula is to adopt QAM modulation.
In the present embodiment, the emission system is by after the control signal simulated and sensor signal two paths of signals superposition modulated
Signal transmission frequencies be 400MHz, size be 5dBm.
In the present embodiment, the input translator and output translator adopt A/D converters.
The present invention can be obtained data as shown in table 1 by the simulation result of two frequency ranges of 5.0GHz and 2.4GHz.
The 5.0GHz of table 1 and the emulation Data Comparison of the frequency band signals of 2.4GHz two transmission
Knowable to the data shown in table 1, same signal is transmitted in different frequency range, and the signal gain and power of output is big
Little difference less, illustrates that the designed microwave transmission channel being made up of emission system and reception system is correct.
The present embodiment system receiving portion, by power divider the control signal or sensor signal after mixing
It is bisected into I, Q two-way to be transmitted, is transmitted using orthogonal I, Q two paths of signals, one times of bandwidth can be saved, makes signal
The transmission of higher efficiency ground, when wherein all the way signal can not continue to transmit due to the reason such as breaking down, interrupting, another road signal
Transmission can be continued, it is ensured that signal can successfully be transferred to destination.Transmission of such Transmission system to signal is safer can
Lean on, with stronger antijamming capability, security performance is good, in can be applicable to the signal transmission of micro robot.
In a word, presently preferred embodiments of the present invention is the foregoing is only, it is all in the present invention not to limit the present invention
Spirit and principle within any modification, equivalent and the improvement made etc., should be included in protection scope of the present invention it
It is interior.
Claims (6)
1. a kind of microwave transmission system, including input translator, emission system, reception system, output translator, its feature exists
In the input translator is used to that the digital control signal and sensor signal of micro robot to be transformed into the control of simulation
Signal processed and sensor signal two paths of signals；
The emission system is used for the control signal and sensor signal two paths of signals superposition modulated of simulation in identical frequency band
And export sending signal；
The reception system receives the signal that the emission system sends, and is separated, revert to simulation control signal and
Sensor signal two paths of signals, and export to output translator；
The output translator is used to that the control signal of simulation and sensor signal two paths of signals to be transformed into the control letter of numeral
Number and sensor signal.
2. the system as claimed in claim 1, it is characterised in that the emission system includes intermediate frequency amplifier, frequency mixer, local
Oscillator, radio frequency band filter, power amplifier, duplexer and antenna, the intermediate frequency amplifier receives the control letter of simulation
Number and sensor signal and amplify, after be mixed by the frequency mixer with the local oscillation signal of the local oscillator, up-convert to
Radiofrequency signal, radiofrequency signal is through the radio frequency band filter, the noise outside rejection band, then power amplifier is put described in Jing
Greatly, eventually pass the duplexer to be launched by the antenna.
3. the system as claimed in claim 1, it is characterised in that the reception system includes radio frequency band filter, low noise
Amplifier, frequency mixer, power divider, local oscillator, intermediate-frequency filter, intermediate frequency amplifier, duplexer and antenna, the day
The radiofrequency signal that line is received is received by the duplexer, is filtered by the radio frequency band filter, it is allowed to frequency band
Interior useful signal passes through, and the unwanted signal outside rejection band, enter back into the low-noise amplifier and penetrate faint
Frequency signal is amplified, and the radiofrequency signal after amplification is divided into equal I, Q two paths of signals by the power divider, then with institute
The high-frequency signal for stating local oscillator is mixed together into the frequency mixer, down-converts to intermediate-freuqncy signal, then through the intermediate frequency
Filter filtering, then intermediate frequency amplifier amplification described in Jing, eventually pass the output translator and are converted to data signal.
4. the system as claimed in claim 1, it is characterised in that the emission system is by the control signal simulated and sensor letter
Number two paths of signals superposition modulated mode is to adopt QAM modulation.
5. the system as claimed in claim 1, it is characterised in that the emission system is by the control signal simulated and sensor letter
It is 5dBm that signal transmission frequencies after number two paths of signals superposition modulated are 400MHz, size.
6. the system as claimed in claim 1, it is characterised in that the input translator and output translator are converted using A/D
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611098349.9A CN106656903A (en) | 2016-12-03 | 2016-12-03 | Microwave transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611098349.9A CN106656903A (en) | 2016-12-03 | 2016-12-03 | Microwave transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106656903A true CN106656903A (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611098349.9A Pending CN106656903A (en) | 2016-12-03 | 2016-12-03 | Microwave transmission system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104519A (en) * | 2017-06-28 | 2017-08-29 | 郑州携能通信技术有限公司 | Microwave wireless charging system and sweeping robot |
| CN107483065A (en) * | 2017-08-15 | 2017-12-15 | 东南大学 | The clamped beam microwave receiver front end that internet of things oriented release model is collected |
| CN107565986A (en) * | 2017-08-15 | 2018-01-09 | 东南大学 | The cantilever beam microwave receiver front end that internet of things oriented release model is collected |
| CN107565999A (en) * | 2017-08-15 | 2018-01-09 | 东南大学 | The clamped beam receiver front end of the clutter collection of energy of internet of things oriented |
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| CN102970053A (en) * | 2012-12-17 | 2013-03-13 | 中国科学院半导体研究所 | Wireless sensor network application-oriented low-power consumption radio frequency receiving and sending device |
| CN103117768A (en) * | 2013-01-25 | 2013-05-22 | 中国科学院微电子研究所 | Wireless transceiver |
| CN103580703A (en) * | 2012-07-30 | 2014-02-12 | 华为技术有限公司 | Transmission circuit, transceiver, communication system and data transmitting method |
-
2016
- 2016-12-03 CN CN201611098349.9A patent/CN106656903A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111903231B (en) * | 2008-12-17 | 2012-11-28 | 中国电子科技集团公司第五十四研究所 | Method suitable for unmanned reconnaissance aircraft measurement and control and information transmission line-of-sight data link signal |
| CN103580703A (en) * | 2012-07-30 | 2014-02-12 | 华为技术有限公司 | Transmission circuit, transceiver, communication system and data transmitting method |
| CN102970053A (en) * | 2012-12-17 | 2013-03-13 | 中国科学院半导体研究所 | Wireless sensor network application-oriented low-power consumption radio frequency receiving and sending device |
| CN103117768A (en) * | 2013-01-25 | 2013-05-22 | 中国科学院微电子研究所 | Wireless transceiver |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104519A (en) * | 2017-06-28 | 2017-08-29 | 郑州携能通信技术有限公司 | Microwave wireless charging system and sweeping robot |
| CN107483065A (en) * | 2017-08-15 | 2017-12-15 | 东南大学 | The clamped beam microwave receiver front end that internet of things oriented release model is collected |
| CN107565986A (en) * | 2017-08-15 | 2018-01-09 | 东南大学 | The cantilever beam microwave receiver front end that internet of things oriented release model is collected |
| CN107565999A (en) * | 2017-08-15 | 2018-01-09 | 东南大学 | The clamped beam receiver front end of the clutter collection of energy of internet of things oriented |
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Application publication date: 20170510 |