CN105450285B - A kind of indirect communication device of ultrashort wave Vehicle mounted station - Google Patents
A kind of indirect communication device of ultrashort wave Vehicle mounted station Download PDFInfo
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- CN105450285B CN105450285B CN201511031609.6A CN201511031609A CN105450285B CN 105450285 B CN105450285 B CN 105450285B CN 201511031609 A CN201511031609 A CN 201511031609A CN 105450285 B CN105450285 B CN 105450285B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15507—Relay station based processing for cell extension or control of coverage area
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Abstract
The invention discloses a kind of indirect communication device of ultrashort wave Vehicle mounted station, the indirect communication device of this kind of ultrashort wave Vehicle mounted station includes: ultrashort wave antenna, duplexer, the first digital ultrashort wave radio station, the second simulation ultrashort wave radio set, third digital ultrashort wave radio station, the 4th simulation ultrashort wave radio set, path selection unit；Ultrashort wave antenna receives radiofrequency signal, and radiofrequency signal is sent to duplexer, radiofrequency signal enters the first digital ultrashort wave radio station or the second simulation ultrashort wave radio set by duplexer, first digital ultrashort wave radio station and the second simulation ultrashort wave radio set are able to radiofrequency signal being converted into voice signal, the voice signal enters third digital ultrashort wave radio station or the 4th simulation ultrashort wave radio set after selecting by path selection unit, third digital ultrashort wave radio station and the 4th simulation ultrashort wave radio set can convert voice signals into radiofrequency signal, the radiofrequency signal is sent to ultrashort wave antenna using duplexer.
Description
Technical field
The invention belongs to ultrashort wave relayed communications technical field, in particular to the relayed communications of a kind of ultrashort wave Vehicle mounted station fills
It sets, suitable for relaying or the ultrashort wave relayed communications of analog-to-digital conversion.
Background technique
Radio station has digital ultrashort wave radio station and simulation ultrashort wave radio set, according to the condition and use of communication equipment site of deployment
The requirement difference at family, often presence progress signal transmission in different ways, and digital ultrashort wave radio station can not be compatible with existing
A large amount of simulation ultrashort wave radio sets.Currently, under the premise of not changing existing communication equipment, it is difficult to by digital ultrashort wave radio station and mould
Quasi- ultrashort wave radio set is reliably connected, it is also difficult to realize the non-interstation function that interconnects of same standard wireless network, in turn
The flexibility and survivability for leading to wireless network reduce.
Summary of the invention
In view of the above problems, it is an object of the invention to propose a kind of indirect communication device of ultrashort wave Vehicle mounted station, this kind
The connection call that can be realized two kinds of different communication modes based on the indirect communication device that ultrashort wave Vehicle mounted station is built, is not only made up
The deficiency of the respective communication mode of digital ultrashort wave radio station and simulation ultrashort wave radio set, and improve existing digital ultrashort wave radio station
With the utilization rate of simulation ultrashort wave radio set, the scope of application that can be communicated is expanded, the ultrashort wave device of different types is interconnected
Intercommunication, while also extending the communication distance of ultrashort wave radio set.
To reach above-mentioned technical purpose, the present invention is realised by adopting the following technical scheme.
A kind of indirect communication device of ultrashort wave Vehicle mounted station includes: ultrashort wave antenna, duplexer, the first digital ultrashort wave
Radio station, the second simulation ultrashort wave radio set, third digital ultrashort wave radio station, the 4th simulation ultrashort wave radio set, path selection unit；
The duplexer is there are five port, respectively the first bidirectional port, the second emission port, third emission port, the
Four receiving ports and the 5th receiving port；First digital ultrashort wave radio station includes three ports, is that the first radiofrequency signal connects respectively
Receiving end, the second audio signal output end, third audio signal output end；Second simulation ultrashort wave radio set includes three ports, point
It is not the 4th rf signal reception end, fifth audio signal output end and the 6th audio signal output end；Third digital ultrashort wave
Radio station includes three ports, is subtonic frequency signal input part, the 8th audio signal input end, the 9th emission of radio frequency signals respectively
End；4th simulation ultrashort wave radio set includes three ports, is the tenth audio signal input end, the input of the 11st audio signal respectively
End and the 12nd emission of radio frequency signals end；First bidirectional port is bi-directionally connected the ultrashort wave antenna, second transmitting
Port is electrically connected first rf signal reception end, and second audio signal output end, which is electrically connected the subtonic frequency, to be believed
Number input terminal, the third audio signal output end are electrically connected the tenth audio signal input end, the third emission port
It is electrically connected the 4th rf signal reception end, the fifth audio signal output end is electrically connected the 8th audio signal input
End, the 6th audio signal output end are electrically connected the 11st audio signal input end, the 9th emission of radio frequency signals
End is electrically connected the 4th receiving port, and the 12nd emission of radio frequency signals end is electrically connected the 5th receiving port.
The path selection unit is used to selectively switch on the first access, alternate path, third path or fourth passage,
Access of first access between second audio signal output end and the subtonic frequency signal input part, described
Access of two accesses between the third audio signal output end and the tenth audio signal input end, the third path
For the access between the fifth audio signal output end and the 8th audio signal input end, the fourth passage is described
Access between 6th audio signal output end and the 11st audio signal input end.
Ultrashort wave antenna receives radiofrequency signal, and radiofrequency signal is sent to duplexer, radiofrequency signal by duplexer into
Enter the first digital ultrashort wave radio station or the second simulation ultrashort wave radio set, the first digital ultrashort wave radio station and the second simulation ultrashort wave electricity
Platform is able to for radiofrequency signal to be converted into voice signal, and the voice signal enters third after selecting by path selection unit
Digital ultrashort wave radio station or the 4th simulation ultrashort wave radio set, third digital ultrashort wave radio station and the 4th simulation ultrashort wave radio set energy
Radiofrequency signal is enough converted voice signals into, the radiofrequency signal is sent to ultrashort wave antenna using duplexer.
The features of the present invention and further improvement lies in that:
The ultrashort wave antenna is sucker antenna or omnidirectional antenna.
The invention has the benefit that it is an object of the invention to propose a kind of support built based on ultrashort wave Vehicle mounted station
Relaying and the ultrashort wave indirect communication device for supporting analog-to-digital conversion, the present invention can make up for it digital ultrashort wave radio station and simulate ultrashort
The deficiency of the two kinds of communication modes itself in wave radio station, such as digital ultrashort wave radio set can not be compatible with existing a large amount of simulation ultrashort wave radio sets,
The utilization rate of equipment is improved, the scope of application that can be communicated is expanded, the ultrashort wave device interoperability of different types can be made, together
When also extend the communication distance of ultrashort wave radio set, enhance flexibility and the survivability of wireless network；Have linking up station poor simultaneously
Rotating function by the difference of trunk desk turns that the speech range between two or multi-section ultrashort wave hand-held set can be made to extend to from several kilometers
More than ten kilometers even tens kilometers.
Detailed description of the invention
Invention is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of indirect communication device general structure schematic diagram of ultrashort wave Vehicle mounted station of the invention；
Fig. 2 is the structural schematic diagram of simulation ultrashort wave radio set of the invention；
Fig. 3 is the structural schematic diagram in digital ultrashort wave radio station of the invention.
Specific embodiment
It referring to Fig.1, is a kind of general structure schematic diagram of the indirect communication device of ultrashort wave Vehicle mounted station of the invention, it is described
A kind of indirect communication device of ultrashort wave Vehicle mounted station, including ultrashort wave antenna, duplexer, the first digital ultrashort wave radio station, second
Simulate ultrashort wave radio set, third digital ultrashort wave radio station and the 4th simulation ultrashort wave radio set；Ultrashort wave antenna is for receiving or sending out
Penetrate ultrashort wave signals；In the present embodiment, ultrashort wave antenna is ultrashort wave sucker antenna or omni-directional high-gain ultrashort wave antenna.It is double
Work device is that the first transmit-receive sharing end, second signal transmitting terminal, third signal transmitting terminal, fourth signal connect respectively there are five port
Receiving end and the 5th signal receiving end；First digital ultrashort wave radio station include three ports, be respectively the first rf signal reception end,
Second audio signal output end, third audio signal output end；Second simulation ultrashort wave radio set includes three ports, is the respectively
Four rf signal reception ends, fifth audio signal output end and the 6th audio signal output end；Third digital ultrashort wave radio station packet
It is subtonic frequency signal input part, the 8th audio signal input end, the 9th emission of radio frequency signals end respectively containing three ports；The
Four simulation ultrashort wave radio sets include three ports, be respectively the tenth audio signal input end, the 11st audio signal input end and
12nd emission of radio frequency signals end；The first port is bi-directionally connected the ultrashort wave antenna, and second emission port is electrically connected
First rf signal reception end is connect, second audio signal output end is electrically connected the subtonic frequency signal input part,
The third audio signal output end is electrically connected the tenth audio signal input end, described in the third emission port electrical connection
4th rf signal reception end, the fifth audio signal output end are electrically connected the 8th audio signal input end, and described the
Six audio signal output ends are electrically connected the 11st audio signal input end, and the 9th emission of radio frequency signals end is electrically connected institute
The 4th receiving port is stated, the 12nd emission of radio frequency signals end is electrically connected the 5th receiving port；
Ultrashort wave antenna is electrically connected the first transmit-receive sharing end of duplexer by antenna socket, sends for receiving duplexer
The radiofrequency signal to come over, or for the received radiofrequency signal of ultrashort wave antenna to be sent to duplexer.The second signal of duplexer
Transmitting terminal is electrically connected first digital ultrashort wave radio station the first rf signal reception end, the third signal transmitting terminal electrical connection of duplexer
The fourth signal receiving end electrical connection third number at the 4th rf signal reception end of the second simulation ultrashort wave radio set, duplexer is super
9th emission of radio frequency signals end of short-wave radio set, the 4th simulation ultrashort wave radio set of the 5th signal receiving end electrical connection of duplexer
12nd emission of radio frequency signals end.
Ultrashort wave antenna receives radiofrequency signal, and radiofrequency signal is sent to duplexer, radiofrequency signal by duplexer into
Enter the first digital ultrashort wave radio station or the second simulation ultrashort wave radio set, the first digital ultrashort wave radio station and the second simulation ultrashort wave electricity
Platform is able to for radiofrequency signal to be converted into voice signal, and the voice signal enters third after selecting by path selection unit
Digital ultrashort wave radio station or the 4th simulation ultrashort wave radio set, third digital ultrashort wave radio station and the 4th simulation ultrashort wave radio set energy
Radiofrequency signal is enough converted voice signals into, the radiofrequency signal is sent to ultrashort wave antenna using duplexer.
Referring to Fig. 2, for the structural schematic diagram of simulation ultrashort wave radio set of the invention；Second simulation ultrashort wave radio set and the 4th
Simulation ultrashort wave radio set separately includes transceiver channel unit, and the transceiver channel unit includes that local oscillation signal, multiplier, power are put
Big circuit and FM processing circuit, the FM processing circuit include two bidirectional interfaces, respectively the first bidirectional interface and second pair
To interface, first bidirectional interface is bi-directionally connected audio interface, for receiving analog audio signal and carrying out FM modulation or hair
Send analog audio signal；The multiplier includes four ports, is respectively: local oscillator input terminal, third bidirectional interface, short-wave antenna
Input terminal, mixed frequency signal output end；The third bidirectional interface of the two-way electrical connection multiplier of second bidirectional interface, multiplier
Local oscillator input terminal is electrically connected the input terminal of power amplification circuit for accessing local oscillation signal, the mixed frequency signal output end of multiplier,
The input terminal of the output end electrical connection ultrashort wave antenna of power amplification circuit, the output end electrical connection multiplier of ultrashort wave antenna
Short-wave antenna input terminal.
The ultrashort wave antenna receives aerial radiofrequency signal, and the aerial radiofrequency signal is sent to multiplier；Meanwhile
Local oscillation signal also enters multiplier, and the first local oscillation signal and aerial radiofrequency signal are modulated after entering multiplier, obtains first
Modulated signal, FM processing circuit are used to carry out FM demodulation to the first modulated signal, the analog audio signal after obtaining FM demodulation, so
The analog audio signal after FM demodulation is played by audio interface afterwards.
The audio interface obtains voice signal, and voice signal enters FM processing circuit by audio interface, obtain by
The signal of FM processing circuit, meanwhile, the second local oscillation signal enters multiplier, the second local oscillation signal and the process FM processing circuit
Signal mixed modulated is carried out in multiplier, obtain the second mixed modulated signal, power amplifier adjusts second mixing
Signal processed carries out power amplification, obtains power signal, and the power signal is blazed abroad by ultrashort wave antenna.
In the embodiment of the present invention, the second simulation ultrashort wave radio set and the 4th simulation ultrashort wave radio set further include that display is single respectively
Member and single-chip microcontroller, display unit include key and display screen, and key is used to input to single-chip microcontroller and instruct, and described instruction is shown
In on display screen, single-chip microcontroller determines transmitting working channel according to described instruction, and according to described instruction respectively to local oscillation signal, FM
Processing circuit and power amplifier send corresponding control signal；When the second simulation ultrashort wave radio set or the 4th simulation are ultrashort
When wave radio station sends signal respectively or receives signal, display screen receives second by single-chip microcontroller processing and simulates ultrashort wave radio set or the
The four simulation corresponding signals of ultrashort wave radio set, and the second simulation ultrashort wave radio set of display or the 4th simulation ultrashort wave electricity accordingly
The respective working condition of platform and instruction information, to show that channel is in reception or emission state.
It is the structural schematic diagram in digital ultrashort wave radio station of the invention referring to Fig. 3；In the embodiment of the present invention, the first number
Ultrashort wave radio set and third digital ultrashort wave radio station are also respectively provided with ultrashort wave antenna, bandpass filter, radiofrequency signal modulus
Converter, FPGA, dsp chip, audio digital to analog converter, audio A/D converter, radiofrequency signal digital analog converter, radiofrequency signal
Analog-digital converter, power amplifier, low-pass filter, audio interface；FPGA includes two bidirectional ports, two input terminals and two
A output end is respectively as follows: the first FPGA bidirectional port, the 2nd FPGA bidirectional port, the first FPGA input terminal, the 2nd FPGA input
End, the first FPGA output end, the 2nd FPGA output end；Dsp chip includes a DSP bidirectional port, and ultrashort wave antenna includes one
A ultrashort wave signals receiving end and a ultrashort wave signals output end；The first FPGA bidirectional port of FPGA is electrically connected dsp chip
DSP bidirectional port, the ultrashort wave output terminal ultrashort wave antenna of the ultrashort wave antenna ultrashort wave signals output end electrical connection
The input terminal of bandpass filter, the input terminal of the output end electrical connection radiofrequency signal analog-digital converter of bandpass filter, radio frequency letter
The first FPGA input terminal of the output end electrical connection FPGA of number analog-digital converter；The 2nd FPGA input terminal of FPGA is electrically connected audio
The output end of analog-digital converter, the input terminal of the first FPGA output end electrical connection audio digital to analog converter of FPGA, the of FPGA
Two FPGA output ends are electrically connected the input terminal of radiofrequency signal digital analog converter, the output end electrical connection of radiofrequency signal digital analog converter
The input terminal of power amplifier, power amplifier output end electrical connection low-pass filter input terminal, low-pass filter it is defeated
The ultrashort wave signals receiving end of outlet electrical connection ultrashort wave antenna；The input terminal electrical connection audio interface of audio A/D converter
Output end, the output end of the input terminal electrical connection audio digital to analog converter of audio interface.
The radiofrequency signal received is sent to bandpass filter, band logical for receiving radiofrequency signal by ultrashort wave antenna
Filter carries out bandpass filtering treatment to the radiofrequency signal received, obtains bandpass signal, then the bandpass signal is sent
To radiofrequency signal analog-digital converter, the bandpass signal is converted to digital radio signal by radiofrequency signal analog-digital converter, and will
The digital radio signal is sent to FPGA, and FPGA is used to carry out the digital radio signal down-converted, then by down coversion
The digital baseband signal generated after processing is sent to dsp chip, and dsp chip is used to carry out base band solution to the digital baseband signal
It adjusts, then the digital audio and video signals generated after base band demodulating is sent to FPGA, the digital audio and video signals are sent to by FPGA again
Audio digital to analog converter, audio digital to analog converter carry out digital-to-analogue conversion to the digital audio and video signals, obtain analog audio signal,
And the analog audio signal is sent to audio interface, audio interface external loudspeaker plays the analog audio signal.
Alternatively, the analog audio signal is sent to audio A/D converter by audio interface carries out analog-to-digital conversion, obtain
Digital audio and video signals, then the digital audio and video signals are sent to FPGA, FPGA is also used for sending the digital audio and video signals
To dsp chip, dsp chip is used to carry out the digital audio and video signals baseband modulation, and the number that will be generated after baseband modulation
Baseband signal is sent to FPGA；FPGA is used to carry out upconversion process to the digital baseband signal, and will be after upconversion process
The digital radio signal of generation is sent to radiofrequency signal digital analog converter, and radiofrequency signal digital analog converter believes the digital RF
Number carry out digital-to-analogue conversion, obtain analog radio-frequency signal, and the analog radio-frequency signal is sent to power amplifier, power amplifier
After carrying out power amplification to the analog radio-frequency signal, retransmits to low-pass filter and be filtered, finally obtain low pass
Then the low-passed analog radiofrequency signal is sent to ultrashort wave antenna again by analog radio-frequency signal.
In the embodiment of the present invention, the first digital ultrashort wave radio station and third digital ultrashort wave radio station are respectively further comprised at ARM
Device and man-machine interaction unit are managed, arm processor includes an ARM bidirectional port, an ARM input terminal and an ARM output end；
Man-machine interaction unit includes key and display screen, the output end of the ARM input terminal electrical connection key of arm processor, ARM processing
Device ARM output end is electrically connected the input terminal of display screen, and the 2nd FPGA of the ARM bidirectional port electrical connection FPGA of arm processor is bis-
To port.
Key is used to input to arm processor and instruct, and arm processor determines the first digital ultrashort wave according to the instruction of key
The transmitting operating mode in radio station or third digital ultrashort wave radio station, the transmitting operating mode include frequency fixing communication, automatically control
Three kinds of communication, adaptive communications operating modes, and unencryped word, acoustic code words, data flow or datagram mode is selected to send out to FPGA accordingly
Send the first digital ultrashort wave radio station or third digital ultrashort wave radio station corresponding control signal, and then in the association of FPGA, dsp chip
Communication process is completed as required under same processing.When the first digital ultrashort wave radio station or third digital ultrashort wave radio station send signal
Or when receiving signal, display screen receives the first digital ultrashort wave radio station or third digital ultrashort wave radio station pair by arm processor
The signal answered allows to show the working condition and instruction letter in the first digital ultrashort wave radio station or third digital ultrashort wave radio station
Breath, to show that channel is in reception or emission state.
In the embodiment of the present invention, it is additionally provided with path selection unit, path selection unit is for selectivelying switch on first
Access, alternate path, third path or fourth passage, first access are second audio signal output end and described the
Access between seven audio signal input ends, the alternate path are the third audio signal output end and the tenth audio
Access between signal input part, the third path are that the fifth audio signal output end and the 8th audio signal are defeated
Enter the access between end, the fourth passage is the 6th audio signal output end and the 11st audio signal input end
Between access；The access selection function of path selection unit selects rotary switch to realize by access.
In the embodiment of the present invention, it is additionally provided with DC power supply and power outlet, DC power supply includes four output ends, is passed through
Power outlet is electrically connected the power end in the first digital ultrashort wave radio station, the power end of the second simulation ultrashort wave radio set, third
The power end of the power end in digital ultrashort wave radio station and the 4th simulation ultrashort wave radio set is respectively used to as the first digital ultrashort wave electricity
Platform, the second simulation ultrashort wave radio set, third digital ultrashort wave radio station and the 4th simulation ultrashort wave radio set provide power supply.
A kind of specific embodiment of ultrashort wave relay processes is as follows: to realize that digital ultrashort wave hand-held set and number are ultrashort
The relay function of wave hand-held set selects rotary switch by changing access, so that path selection unit connects the first access.Due to
Digital ultrashort wave hand-held set receives frequency and tranmitting frequency is different, this time sets the first digital ultrashort wave hand-held set and third
The reception signal frequency of digital ultrashort wave hand-held set is respectively A, and emission signal frequency is respectively B；With the first digital ultrashort wave hand
Hold machine and third digital ultrashort wave hand-held set corresponding first digital ultrashort wave radio station and third digital ultrashort wave radio station
Receiving signal frequency is respectively B, and emission signal frequency is respectively A.First digital ultrashort wave hand-held set receives audio signal, then will
Audio signal is converted into radiofrequency signal, and radiofrequency signal is launched outward, and ultrashort wave antenna of the invention receives radiofrequency signal, and
So that the radiofrequency signal is entered the first digital ultrashort wave radio station by duplexer, leads to further according to path selection unit is connected first
Road, so that third digital ultrashort wave radio station receives the radiofrequency signal from the first digital ultrashort wave hand-held set and carries out impedance
Match, and then obtain the radiofrequency signal of impedance matching, the radiofrequency signal of the impedance matching is then entered into bandpass filter and is filtered
Wave processing, the analog radio-frequency signal obtained after filtering processing, then the analog radio-frequency signal is sent to radiofrequency signal analog-to-digital conversion
Device becomes digital radio signal after analog-to-digital conversion, and the digital radio signal is sent to FPGA.
FPGA believes the digital RF after receiving the digital radio signal from radiofrequency signal analog-digital converter
Number carry out down-converted, obtain digital baseband signal, the digital baseband signal is sent to dsp chip, dsp chip by FPGA
Base band demodulating is carried out to digital baseband signal, the digital audio and video signals that demodulation generates then are sent to FPGA, FPGA will be described
Digital audio and video signals are sent to audio digital to analog converter, and audio digital to analog converter carries out digital-to-analogue to the digital audio and video signals and turns
It changes, is sent to audio interface after obtaining analog audio signal, audio interface receives analog audio signal, and at audio interface
External loudspeaker can hear corresponding sound.
Audio interface is also connected with the audio A/D converter that the ultrashort radio station of third number includes, so that the audio A/D is converted
Device carries out analog-to-digital conversion, the digital audio and video signals that will be obtained after analog-to-digital conversion to the received analog audio signal of the audio interface
It is sent to FPGA, digital audio and video signals are sent to dsp chip by FPGA, and dsp chip carries out base band tune to the digital audio and video signals
System, and the digital baseband signal generated after baseband modulation is sent to FPGA, FPGA carries out upper change to the digital baseband signal
Frequency is handled, and generates digital radio signal, and the digital radio signal is sent to radiofrequency signal digital analog converter, radio frequency letter by FPGA
Number mode converter carries out digital-to-analogue conversion to the digital radio signal, and the analog radio-frequency signal after digital-to-analogue conversion is sent to
Power amplifier, power amplifier is sent to low-pass filter after carrying out power amplification to the analog radio-frequency signal, in low pass
In filter, the analog radio-frequency signal after power amplification is filtered, the analog radio frequency after filtering out the power amplification
The harmonic component and idle component of signal, obtain useful analog radio-frequency signal, are then sent to useful analog radio-frequency signal super
Short-wave antenna completes impedance matching, obtains the radiofrequency signal of impedance matching, while the radiofrequency signal of impedance matching being passed through ultrashort
Wave antenna is sent, and third digital ultrashort wave hand-held set corresponding with third digital ultrashort wave radio station receives penetrating for impedance matching
Frequency signal, and the radiofrequency signal of the impedance matching is converted into audio signal, and issue voice, thus device through the invention
Complete interconnecting between the first digital ultrashort wave hand-held set and third digital ultrashort wave hand-held set.
In the embodiment of the present invention, to realize digital ultrashort wave hand-held set and simulating the relay function of ultrashort wave hand-held set, lead to
Change access selection rotary switch is crossed, so that path selection unit connects alternate path.First digital ultrashort wave hand-held set receives
Audio signal, and the audio signal is converted into radiofrequency signal, then emission of radio frequency signals is gone out, ultrashort wave antenna reception is penetrated
Frequency signal, the received radiofrequency signal of ultrashort wave antenna enter the first digital ultrashort wave radio station by duplexer.It is selected according to access
The alternate path that unit is connected receives with the first digital ultrashort wave hand-held set corresponding first digital ultrashort wave radio station and comes from first
The radiofrequency signal of digital ultrashort wave hand-held set, and the radiofrequency signal is sent to bandpass filter and is filtered, then will be through
The analog radio-frequency signal obtained after filtering processing is sent to radiofrequency signal analog-digital converter, becomes digital RF after analog-to-digital conversion
The digital radio signal is sent to FPGA, after FPGA receives the digital radio signal, believed the digital RF by signal
Number carry out down-converted, obtain digital baseband signal, digital baseband signal is sent to dsp chip, DSP chip again by FPGA
Base band demodulating is carried out to the digital baseband signal, the digital audio and video signals that demodulation generates then are sent to FPGA, FPGA will
The digital audio and video signals are sent to audio digital to analog converter, and audio digital to analog converter carries out digital-to-analogue to the digital audio and video signals
The analog audio signal that conversion generates is sent to audio interface by conversion, and audio interface receives the analog audio that the conversion generates
Frequency signal, and external loudspeaker can hear corresponding sound at audio interface.
Due to the 4th simulation ultrashort wave radio set of alternate path connection of access selection control unit selection, the 4th simulation is ultrashort
Wave radio station receives the analog audio signal that the conversion generates, and the analog audio signal generated to the conversion carries out FM tune
System, the signal generated after FM is modulated are mixed, and generate radiofrequency signal corresponding with the 4th simulation ultrashort wave radio set, will be described
After radiofrequency signal corresponding with the 4th simulation ultrashort wave radio set carries out power amplification, the radiofrequency signal after obtaining power amplification, so
The radiofrequency signal after the power amplification is sent into duplexer afterwards, is sent to the radiofrequency signal after the power amplification by duplexer
Ultrashort wave antenna is gone out the emission of radio frequency signals after power amplification by ultrashort wave antenna, then is held by the second simulation ultrashort wave
Machine receives the radiofrequency signal after the power amplification, and this completes super from the first digital ultrashort wave hand-held set to the second simulation
The signal of shortwave hand-held set transmits.
In the embodiment of the present invention, for the relay function for realizing simulation ultrashort wave hand-held set and digital ultrashort wave hand-held set, lead to
Change access selection rotary switch is crossed, so that path selection unit connects third path.First simulation ultrashort wave hand-held set receives
Audio signal, and the audio signal is converted into radiofrequency signal, then the emission of radio frequency signals is gone out, ultrashort wave antenna reception is penetrated
Frequency signal, the received radiofrequency signal of ultrashort wave antenna enter the second simulation ultrashort wave radio set by duplexer, and the second simulation is ultrashort
After wave radio station is mixed the radiofrequency signal received, intermediate-freuqncy signal corresponding with the second simulation ultrashort wave radio set is obtained, so
The intermediate-freuqncy signal corresponding with the second simulation ultrashort wave radio set is sent to FM processing circuit afterwards and carries out FM demodulation, is solved by FM
Generate analog audio signal after tune, the second simulation ultrashort wave radio set analog audio signal is connected by path selection unit the
Three-way is sent to third digital ultrashort wave radio station, by the audio A/D converter in third digital ultrashort wave radio station to the mould
Quasi- audio signal carries out analog-to-digital conversion, and the digital audio and video signals obtained after analog-to-digital conversion are sent to FPGA, and FPGA is by the number
Word audio signal is sent to dsp chip, and dsp chip carries out baseband modulation to the digital audio and video signals, and will be after baseband modulation
The digital baseband signal of generation is sent to FPGA, and FPGA carries out upconversion process to the digital baseband signal, generates number and penetrates
The digital radio signal is sent to radiofrequency signal digital analog converter by frequency signal, FPGA, and radiofrequency signal digital analog converter is to described
Digital radio signal carries out digital-to-analogue conversion, and the analog radio-frequency signal obtained after digital-to-analogue conversion is sent to power amplifier, power
After amplifier amplifies the analog radio-frequency signal, retransmits to low-pass filter and be filtered.In low-pass filtering
In device, the analog radio-frequency signal after power amplification is filtered, filters out the simulation after power amplification
The harmonic component and idle component of radiofrequency signal, obtain useful analog radio-frequency signal, then send useful analog radio-frequency signal
Impedance matching is completed to ultrashort wave antenna, obtains the useful radiofrequency signal of impedance matching, and passes through ultrashort wave antenna for useful mould
Quasi- radiofrequency signal is sent, which is converted into audio signal by the second digital ultrashort wave hand-held set, and
Voice is issued, thus device completes the first simulation ultrashort wave hand-held set and the second digital ultrashort wave hand-held set through the invention
Interconnect.
In the embodiment of the present invention, to realize simulation ultrashort wave hand-held set and simulating the relay function of ultrashort wave hand-held set, lead to
Change access selection rotary switch is crossed, so that path selection unit connects fourth passage.First simulation ultrashort wave hand-held set receives
Audio signal, and the audio signal is converted into radiofrequency signal, then the emission of radio frequency signals is gone out, ultrashort wave antenna receives
Radiofrequency signal, the received radiofrequency signal of ultrashort wave antenna enter the second simulation ultrashort wave radio set by duplexer, and the second simulation is super
Short-wave radio set is mixed the radiofrequency signal received, obtains intermediate-freuqncy signal corresponding with the second simulation ultrashort wave radio set, and
The intermediate-freuqncy signal corresponding with the second simulation ultrashort wave radio set is sent to FM processing circuit and carries out demodulation process, generates simulation
The analog audio signal is sent to the 4th simulation ultrashort wave radio set, the 4th mould by audio signal, the second simulation ultrashort wave radio set
Quasi- ultrashort wave radio set receives analog audio signal, and the analog audio signal is sent to FM processing circuit and carries out FM modulation,
The signal generated after FM is modulated is mixed, and generates radiofrequency signal corresponding with the 4th simulation ultrashort wave radio set；Will it is described with
The corresponding radiofrequency signal of 4th simulation ultrashort wave radio set obtains the radiofrequency signal after power amplification after carrying out power amplification, and should
Radiofrequency signal after power amplification is sent into duplexer, and the radiofrequency signal after power amplification is sent to ultrashort wave day by duplexer
Line is gone out the emission of radio frequency signals after power amplification by ultrashort wave antenna, then receives institute by the second simulation ultrashort wave hand-held set
Radiofrequency signal after stating power amplification, this completes hand-held from the first simulation ultrashort wave hand-held set to the second simulation ultrashort wave
The signal of machine transmits.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (3)
1. a kind of indirect communication device of ultrashort wave Vehicle mounted station characterized by comprising ultrashort wave antenna, duplexer, the first number
Word ultrashort wave radio set, the second simulation ultrashort wave radio set, third digital ultrashort wave radio station, the 4th simulation ultrashort wave radio set, access choosing
Select unit；
There are five ports for the duplexer, and respectively the first bidirectional port, the second emission port, third emission port, the 4th connect
Receiving end mouth and the 5th receiving port；First digital ultrashort wave radio station include three ports, be respectively the first rf signal reception end,
Second audio signal output end, third audio signal output end；Second simulation ultrashort wave radio set includes three ports, is the respectively
Four rf signal reception ends, fifth audio signal output end and the 6th audio signal output end；Third digital ultrashort wave radio station packet
It is subtonic frequency signal input part, the 8th audio signal input end, the 9th emission of radio frequency signals end respectively containing three ports；The
Four simulation ultrashort wave radio sets include three ports, be respectively the tenth audio signal input end, the 11st audio signal input end and
12nd emission of radio frequency signals end；First bidirectional port is bi-directionally connected the ultrashort wave antenna, second emission port
It is electrically connected first rf signal reception end, second audio signal output end is electrically connected the subtonic frequency signal input
End, the third audio signal output end are electrically connected the tenth audio signal input end, the third emission port electrical connection
The 4th rf signal reception end, the fifth audio signal output end are electrically connected the 8th audio signal input end, institute
It states the 6th audio signal output end and is electrically connected the 11st audio signal input end, the 9th emission of radio frequency signals end is electrically connected
The 4th receiving port is connect, the 12nd emission of radio frequency signals end is electrically connected the 5th receiving port；
The path selection unit is described for selectivelying switch on the first access, alternate path, third path or fourth passage
Access of first access between second audio signal output end and the subtonic frequency signal input part, described second is logical
Access of the road between the third audio signal output end and the tenth audio signal input end, the third path are institute
The access between fifth audio signal output end and the 8th audio signal input end is stated, the fourth passage is the described 6th
Access between audio signal output end and the 11st audio signal input end；
Ultrashort wave antenna receives radiofrequency signal, and radiofrequency signal is sent to duplexer, and radiofrequency signal enters the by duplexer
One digital ultrashort wave radio station or the second simulation ultrashort wave radio set, the first digital ultrashort wave radio station and the second simulation ultrashort wave radio set point
Radiofrequency signal can be converted into voice signal, the voice signal enters third number after selecting by path selection unit
Ultrashort wave radio set or the 4th simulation ultrashort wave radio set, third digital ultrashort wave radio station and the 4th simulation ultrashort wave radio set can incite somebody to action
Voice signal is converted into radiofrequency signal, and the radiofrequency signal is sent to ultrashort wave antenna using duplexer；
Wherein, first digital ultrashort wave radio station and third digital ultrashort wave radio station are also respectively provided with ultrashort wave antenna, band
Bandpass filter, radiofrequency signal analog-digital converter, FPGA, dsp chip, audio digital to analog converter, audio A/D converter, radio frequency letter
Number mode converter, radiofrequency signal analog-digital converter, power amplifier, low-pass filter, audio interface；
FPGA includes two bidirectional ports, two input terminals and two output ends, is respectively as follows: the first FPGA bidirectional port, second
FPGA bidirectional port, the first FPGA input terminal, the 2nd FPGA input terminal, the first FPGA output end, the 2nd FPGA output end；DSP
Chip includes a DSP bidirectional port, and ultrashort wave antenna includes that a ultrashort wave signals receiving end and a ultrashort wave signals are defeated
Outlet；The DSP bidirectional port of the first FPGA bidirectional port electrical connection dsp chip of FPGA, the ultrashort wave of the ultrashort wave antenna
The input terminal of the ultrashort wave signals output end electrical connection bandpass filter of output end ultrashort wave antenna, the output end of bandpass filter
It is electrically connected the input terminal of radiofrequency signal analog-digital converter, the output end of radiofrequency signal analog-digital converter is electrically connected the first of FPGA
FPGA input terminal；The output end of the 2nd FPGA input terminal electrical connection audio A/D converter of FPGA, the first FPGA of FPGA are defeated
Outlet is electrically connected the input terminal of audio digital to analog converter, and the 2nd FPGA output end of FPGA is electrically connected radiofrequency signal digital analog converter
Input terminal, radiofrequency signal digital analog converter output end electrical connection power amplifier input terminal, the output of power amplifier
The ultrashort wave signals of the input terminal of end electrical connection low-pass filter, the output end electrical connection ultrashort wave antenna of low-pass filter receive
End；The output end of the input terminal electrical connection audio interface of audio A/D converter, the input terminal of audio interface are electrically connected audio number
The output end of mode converter；
The radiofrequency signal received is sent to bandpass filter, bandpass filtering for receiving radiofrequency signal by ultrashort wave antenna
Device carries out bandpass filtering treatment to the radiofrequency signal received, obtains bandpass signal, then the bandpass signal is sent to and is penetrated
The bandpass signal is converted to digital radio signal by frequency signal analog-digital converter, radiofrequency signal analog-digital converter, and by the number
Word radiofrequency signal is sent to FPGA, and FPGA is used to carry out the digital radio signal down-converted, then by down-converted
The digital baseband signal generated afterwards is sent to dsp chip, and dsp chip is used to carry out base band demodulating to the digital baseband signal,
The digital audio and video signals generated after base band demodulating are sent to FPGA again, the digital audio and video signals are sent to audio again by FPGA
Digital analog converter, audio digital to analog converter carry out digital-to-analogue conversion to the digital audio and video signals, obtain analog audio signal, and will
The analog audio signal is sent to audio interface, and audio interface external loudspeaker plays the analog audio signal；
Alternatively, the analog audio signal is sent to audio A/D converter by audio interface carries out analog-to-digital conversion, number is obtained
Audio signal, then the digital audio and video signals are sent to FPGA, FPGA is also used for the digital audio and video signals being sent to DSP
Chip, dsp chip is used to carry out the digital audio and video signals baseband modulation, and the digital baseband generated after baseband modulation is believed
Number it is sent to FPGA；FPGA is used to carry out the digital baseband signal upconversion process, and will generate after upconversion process
Digital radio signal is sent to radiofrequency signal digital analog converter, and radiofrequency signal digital analog converter carries out the digital radio signal
Digital-to-analogue conversion obtains analog radio-frequency signal, and the analog radio-frequency signal is sent to power amplifier, and power amplifier is to described
After analog radio-frequency signal carries out power amplification, retransmits to low-pass filter and be filtered, finally obtain low-passed analog and penetrate
Then the low-passed analog radiofrequency signal is sent to ultrashort wave antenna again by frequency signal.
2. a kind of indirect communication device of ultrashort wave Vehicle mounted station as described in claim 1, which is characterized in that second simulation
Ultrashort wave radio set and the 4th simulation ultrashort wave radio set also include transceiver channel unit, the transceiver channel unit transceiver channel respectively
Unit includes local oscillation signal, multiplier, power amplification circuit and FM processing circuit；The FM processing circuit includes two and two-way connects
Mouthful, respectively the first bidirectional interface and the second bidirectional interface；The multiplier includes four ports, is respectively: local oscillator input terminal,
Third bidirectional interface, short-wave antenna input terminal, mixed frequency signal output end；The two-way electrical connection multiplier of second bidirectional interface
Third bidirectional interface, the local oscillator input terminal of multiplier is for accessing local oscillation signal, the mixed frequency signal output end electrical connection of multiplier
The input terminal of power amplification circuit, the input terminal of the output end electrical connection ultrashort wave antenna of power amplification circuit, ultrashort wave antenna
Output end electrical connection multiplier short-wave antenna input terminal；
The ultrashort wave antenna receives aerial radiofrequency signal, and the aerial radiofrequency signal is sent to multiplier；Meanwhile local oscillator
Signal also enters multiplier, and the first local oscillation signal and aerial radiofrequency signal are modulated after entering multiplier, obtains the first modulation
Signal, FM processing circuit are used to carry out FM demodulation to the first modulated signal, then the analog audio signal after obtaining FM demodulation will
Analog audio signal after the FM demodulation is played by audio interface；
The audio interface obtains voice signal, and voice signal enters FM processing circuit by audio interface, obtains by FM
The signal of circuit is managed, meanwhile, the second local oscillation signal enters multiplier, the second local oscillation signal and the letter by FM processing circuit
Number mixed modulated is carried out in multiplier, obtain the second mixed modulated signal, power amplifier believes second mixed modulated
Number carry out power amplification, obtain power signal, and the power signal is blazed abroad by ultrashort wave antenna.
3. a kind of indirect communication device of ultrashort wave Vehicle mounted station as described in claim 1, which is characterized in that the ultrashort wave day
Line is sucker antenna or omnidirectional antenna.
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| CN106741989B (en) * | 2016-12-27 | 2019-11-15 | 哈尔滨飞机工业集团有限责任公司 | A kind of Wing Newsletter coding injection device |
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| CN204272108U (en) * | 2014-12-18 | 2015-04-15 | 陕西烽火实业有限公司 | A kind ofly can support the communicator of ultrashort wave relaying with short-wave radio set intercommunication |
| CN205356344U (en) * | 2015-12-31 | 2016-06-29 | 陕西烽火实业有限公司 | Relaying communication device of on -vehicle platform of ultrashort wave |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204272108U (en) * | 2014-12-18 | 2015-04-15 | 陕西烽火实业有限公司 | A kind ofly can support the communicator of ultrashort wave relaying with short-wave radio set intercommunication |
| CN205356344U (en) * | 2015-12-31 | 2016-06-29 | 陕西烽火实业有限公司 | Relaying communication device of on -vehicle platform of ultrashort wave |
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