CN108882218A - power emergency communication system - Google Patents
power emergency communication system Download PDFInfo
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- CN108882218A CN108882218A CN201810563185.5A CN201810563185A CN108882218A CN 108882218 A CN108882218 A CN 108882218A CN 201810563185 A CN201810563185 A CN 201810563185A CN 108882218 A CN108882218 A CN 108882218A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/0057—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3805—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving with built-in auxiliary receivers
Abstract
The invention discloses power emergency communication systems by the way that the first duplexing intermediate station, the first audio frequency processing circuit and the first short-wave radio set to be electrically connected, the second alien frequencies interconnecting module includes being sequentially connected electrically the second duplexing intermediate station, the second audio frequency processing circuit and the electrical connection of the second short-wave radio set, then the first alien frequencies interconnecting module and the second alien frequencies interconnecting module pass through the first short-wave radio set respectively and the second short-wave radio set is realized and is wirelessly connected；Described first duplexing intermediate station includes the first ultrashort wave antenna, described second duplexing intermediate station includes the second ultrashort wave antenna, the first alien frequencies interconnecting module can be communicated by the first ultrashort wave antenna and several ultrashort wave radio sets, therefore the power emergency communication system can be realized interconnecting for alien frequencies radio station part, flexibility and the survivability for improving wireless network, realize the remote transmission of ultrashort wave signals.
Description
Technical field
The present invention relates to the communications field more particularly to a kind of power emergency communication systems.
Background technique
Short-wave radio set tissue emergency communication net such as can carry out selective call centered on somewhere, group busy at the group-net communications, communicate model
It is big to enclose area coverage, communication distance is up to 2000km or so.There is short-wave radio set in general communication communication distance not need far
Trunking, using flexible is motor-driven, and does not need cost of the phone call, but has certain weight and volume after all, adapts to base station
It is installed with Vehicle mounted station, it is inconvenient to carry.Although ultrashort wave radio set is widely used, but communication distance but only has several kilometers to more than ten
Kilometer, and signal blocks can occur and influence communication efficiency by high mountain or urban high-rise building.Only add the difference of linking up station
Turn that the call between two hand-held sets could be made to extend to tens kilometers from several kilometers.
Currently, it is interstation that the prior art is difficult to realize alien frequencies wireless network on the basis of not changing existing communication equipment
Interconnect function, and the flexibility of wireless network and survivability is caused to reduce.
Summary of the invention
The purpose of the embodiment of the present invention is that providing a kind of power emergency communication system, alien frequencies radio station part can be effectively realized
Interconnect, improve flexibility and the survivability of wireless network.
To achieve the above object, the embodiment of the invention provides a kind of power emergency communication systems, including wireless connection
First alien frequencies interconnecting module and the second alien frequencies interconnecting module；Wherein, the first alien frequencies interconnecting module includes being sequentially connected electrically
First duplexing intermediate station, the first audio frequency processing circuit and the first short-wave radio set, the second alien frequencies interconnecting module include successively electric
The duplexing intermediate station of connection second, the second audio frequency processing circuit and the second short-wave radio set, first short-wave radio set and the second shortwave
Station radio connection；The first duplexing intermediate station includes the first ultrashort wave antenna, first duplexer, the first emitter and the
One reception device, the first duplexer are connected with the first ultrashort wave antenna, the first emitter with first receiving device respectively,
First emitter is connected with first receiving device；The second duplexing intermediate station includes the second ultrashort wave antenna, the
Two duplexers, the second emitter and the second reception device, second duplexer are sent out with the second ultrashort wave antenna, second respectively
Injection device and the connection of the second reception device, second emitter and the second reception device are connected；Described first receives dress
Set and distinguish the first audio frequency processing circuit with the first emitter and connect, second emitter and the first emitter respectively with
The connection of second audio frequency processing circuit.
Compared with prior art, power emergency communication system disclosed by the invention is by by the first duplexing intermediate station, first
Audio frequency processing circuit and the electrical connection of the first short-wave radio set, the second alien frequencies interconnecting module include being sequentially connected electrically in the second duplex
Turntable, the second audio frequency processing circuit and the second short-wave radio set are electrically connected, then the first alien frequencies interconnecting module and the second alien frequencies switching model
Block passes through the first short-wave radio set and the second short-wave radio set respectively to be realized and is wirelessly connected, to realize the first alien frequencies interconnecting module and the
The short wave communication of two interconnecting modules；The first duplexer connects with the first ultrashort wave antenna, the first emitter and first respectively
Receiving apparatus connection, second duplexer are connected with the second ultrashort wave antenna, the second emitter and the second reception device respectively,
Second emitter and the second reception device are connected, then the first alien frequencies interconnecting module can pass through the first ultrashort wave day
Line and several ultrashort wave radio sets are communicated, and the second alien frequencies interconnecting module several can surpass by the second ultrashort wave antenna and one
Short-wave radio set is communicated, and the first receiving device and the first emitter distinguish the connection of the first audio frequency processing circuit, described
Second emitter and the second reception device are connect with the second audio frequency processing circuit respectively, then by a ultrashort wave radio set by the
The signal of one reception device output can be sent to the first short-wave radio set by the first audio frequency processing circuit, then pass through the first shortwave electricity
Platform is sent to the second short-wave radio set, then sends out from the second short-wave radio set by the second audio frequency processing circuit by the second sending device
It send to another ultrashort wave radio set, therefore the power emergency communication system can be realized interconnecting for alien frequencies radio station part,
Flexibility and the survivability for improving wireless network, realize the remote transmission of ultrashort wave signals, more can all kinds of urgent feelings of flexible adaptation
Condition and adverse circumstances.
As an improvement of the above scheme, the power emergency communication system further includes several ultrashort wave radio sets, Mei Yisuo
It states ultrashort wave radio set to be wirelessly connected with the first alien frequencies interconnecting module or the second alien frequencies interconnecting module respectively, to realize multiple ultrashort
Telecommunication between wave radio station.
As an improvement of the above scheme, each ultrashort wave radio set is hand-held radio telephone.Hand-held radio telephone is set with structure
Feature simple, small in size and easily operated is counted, can be widely applied in emergency communication.
As an improvement of the above scheme, the ultrashort wave radio set include each ultrashort wave radio set include terminal module,
Third ultrashort wave antenna, transmit-receive switch, transmitting unit and receiving unit；The third ultrashort wave antenna is connect with transmit-receive switch,
The transmit-receive switch is connect with transmitting unit and receiving unit respectively, the terminal module respectively with transmitting unit and receiving unit
Connection.
As an improvement of the above scheme, the transmitting unit includes sequentially connected modulation circuit, mixting circuit, power amplifier electricity
Road and the first low-pass filter, the receiving unit include the first double-tuned filter, high-frequency amplifier, the filtering of the second double tunning
Device, frequency mixer, intermediate frequency filtering unit, intermediate frequency amplifier, detecting circuit, squelch circuit, the second low-pass filter, audio compression are put
Big circuit, wherein first double-tuned filter, high-frequency amplifier, the second double-tuned filter, frequency mixer, intermediate frequency filtering
Unit, intermediate frequency amplifier, the second low-pass filter, audio compression amplifying circuit are sequentially connected, and squelch circuit is electric with detection respectively
Road, the connection of audio compression amplifying circuit, the modulation circuit and audio compression amplifying circuit are connect with the terminal module respectively,
First low-pass filter and the first double-tuned filter are connected with the transmit-receive switch respectively.It is handled by squelch circuit
To audio signal can eliminate or inhibit the background noise when being not received by signal.
As an improvement of the above scheme, the terminal module includes audio unit, and the audio unit includes microphone, first
Audio amplifier circuit, earphone horn and the second audio amplifier circuit, the microphone and the connection of the first audio amplifier circuit, the ear
The modulation circuit of machine loudspeaker and the connection of the second audio amplifier circuit, first audio amplifier circuit and the transmitting unit connects
It connects, second audio amplifier circuit is connected with the audio compression amplifying circuit of the receiving unit.
As an improvement of the above scheme, first short-wave radio set includes sequentially connected first short-wave antenna, the first filter
Wave unit, the first radio frequency converting unit, the first frequency-conversion processing unit, the first modulation/demodulation unit and the first audio conversion unit；
Second short-wave radio set includes sequentially connected second short-wave antenna, the second filter unit, the second radio frequency converting unit, second
Frequency-conversion processing unit, the second modulation/demodulation unit and the second audio conversion unit, first audio conversion unit and described the
The connection of one audio frequency processing circuit, second audio conversion unit are connect with second audio frequency processing circuit.
As an improvement of the above scheme, first emitter includes that the first U sections of transmitting units and the first V sections of transmittings are single
Member, the first receiving device include the first U sections of receiving units and the first V sections of receiving units, and second emitter includes
2nd U sections of transmitting units and the 2nd V sections of transmitting units, second reception device include the 2nd U sections of receiving units and the 2nd V sections
Receiving unit.
As an improvement of the above scheme, first short-wave antenna and the second short-wave antenna are whip antenna, and described
One ultrashort wave antenna, the second ultrashort wave antenna and third ultrashort wave antenna are yagi aerial.Yagi aerial has good direction
Property, there is high gain compared with dipole antenna, and it is especially good to can be used to direction finding, telecommunication effect.
As an improvement of the above scheme, the filter of the transmitting unit includes U sections of filters and V sections of filters, described
Transmitting unit includes U/V switch, and the U/V switch is connect with U sections of filters and V sections of filters respectively.The ultrashort wave radio set
The communication that double frequency segment signal can be achieved, has widened the working frequency range of hand-held radio telephone, has increased the scope of application of hand-held radio telephone.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of power emergency communication system in the embodiment of the present invention 1.
Fig. 2 is a kind of structural schematic diagram of power emergency communication system in the embodiment of the present invention 2.
Fig. 3 is the structural schematic diagram of the ultrashort wave radio set in the embodiment of the present invention 2.
Fig. 4 is the structural schematic diagram of the first short-wave radio set in the embodiment of the present invention 2.
Fig. 5 is the structural schematic diagram of the second short-wave radio set in the embodiment of the present invention 2.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only two section Examples of the invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is a kind of structural schematic diagram for power emergency communication system that the embodiment of the present invention 1 provides, including nothing referring to Fig. 1
The the first alien frequencies interconnecting module 100 and the second alien frequencies interconnecting module 200 of line connection；Wherein, the first alien frequencies interconnecting module 100
The first duplexing intermediate station 1, the first audio frequency processing circuit 2 and the first short-wave radio set 3 including being sequentially connected electrically, second alien frequencies
Interconnecting module 200 includes being sequentially connected electrically the second duplexing intermediate station 4, the second audio frequency processing circuit 5 and the second short-wave radio set 6, institute
It states the first short-wave radio set 3 and the second short-wave radio set 6 is wirelessly connected；Described first duplexing intermediate station 1 includes the first ultrashort wave antenna
11, first duplexer 12, the first emitter 13 and first receiving device 14, the first duplexer 12 are ultrashort with first respectively
Wave antenna 11, the first emitter 13 connect 14 with first receiving device, first emitter 13 and first receiving device
14 are connected；Described second duplexing intermediate station 4 includes the second ultrashort wave antenna 41, the second duplexer 42, the second emitter 43
With the second reception device 44, second duplexer 42 respectively with the second ultrashort wave antenna 41, the second emitter 43 and second
Reception device 44 connects, and second emitter 43 is connected with the second reception device 44；14 He of first receiving device
First emitter 13 distinguishes the connection of the first audio frequency processing circuit 2, and second emitter 43 and the first emitter 44 divide
It is not connect with the second audio frequency processing circuit 5.
Wherein, first audio frequency processing circuit 2 is used to carry out the analog audio signal that the first duplexing intermediate station 1 exports
The first short-wave radio set 3 is sent to after attenuation processing, first audio frequency processing circuit is used for the mould for exporting the first short-wave radio set 3
Quasi- audio signal is sent to the first duplexing intermediate station 1 after carrying out attenuation processing；Second voicefrequency circuit 5 is used for the second shortwave
The analog audio signal that radio station 6 exports is sent to the second duplexing intermediate station 4, second voicefrequency circuit 5 after carrying out attenuation processing
Analog audio signal for exporting the second duplexing intermediate station 4 is sent to the second short-wave radio set 6 after carrying out attenuation processing.
By the way that the first duplexing intermediate station 1, the first audio frequency processing circuit 2 and the first short-wave radio set 3 are electrically connected, the second duplex
Intermediate station 4, the second audio frequency processing circuit 5 and the electrical connection of the second short-wave radio set 6, then the first alien frequencies interconnecting module 100 and second is different
Frequency interconnecting module 200 is realized by the first short-wave radio set 3 and the second short-wave radio set 6 be wirelessly connected respectively, to realize that first is different
The short wave communication of frequency interconnecting module 100 and the second interconnecting module 200；First duplexer 12 in described first duplexing intermediate station 1
It is connected respectively with the first ultrashort wave antenna 11, the first emitter 13 and first receiving device 14, in the second duplexing intermediate station 4
Second duplexer 42 is connected with the second ultrashort wave antenna 41, the second emitter 43 and the second reception device 44 respectively, then
The first alien frequencies interconnecting module 100 can be communicated by the first ultrashort wave antenna 11 and several ultrashort wave radio sets, and described
Two alien frequencies interconnecting modules 200 can be communicated by the second ultrashort wave antenna 41 and several ultrashort wave radio sets, and described first receives
Device 14 and other first audio frequency processing circuit 2 connection of the first emitter point 13, second emitter 43 and second receive
Device 44 is connect with the second audio frequency processing circuit 5 respectively, utilizes first audio frequency processing circuit 2 and the second audio frequency processing circuit
5 poor rotating function realizes that a ultrashort wave radio set inputs the first audio frequency processing circuit 2 by first receiving device 14 and is sent to first
Short-wave radio set 3, then the second short-wave radio set 6 is sent to by the first short-wave radio set 3, then pass through second by the second short-wave radio set 6
Audio frequency processing circuit 5 is sent to another ultrashort wave radio set by the second emitter 43, and since the first duplexer 12 divides
It is not connected with the first ultrashort wave antenna 11, the first emitter 13 and first receiving device 14, second duplexer 42 is distinguished
It is connected with the second ultrashort wave antenna 41, the first emitter 43 and first receiving device 44, therefore reverse link communication can be carried out simultaneously,
Furthermore first emitter 13 and first receiving device 14 connect, second emitter 43 and the second reception device
44 connections, therefore, the first alien frequencies interconnecting module 100 and the second alien frequencies interconnecting module 200 also have in ultra short wave communication
After function, thus the power emergency communication system realize short wave communication communication distance is remote and the portability of ultra short wave communication
Effective combination, realize the remote transmission of ultrashort wave signals, more can all kinds of emergencies of flexible adaptation and adverse circumstances.
Preferably, the first duplexer 12 is made of two bandpass filters and a T junction, is a three port nets
Network.Wherein, the bandpass filter is DBR bandpass filter.Preferably, the standard of DGS is introduced in the DBR bandpass filter
Low-pass Elliptic Filter, to increase the electrical length that odd mould is propagated, the phase speed difference between smaller parity mode improves the filter of DBR band logical
The upper belt resistance inhibitor system of wave device.
Preferably, first emitter include the first U sections of transmitting units and the first V sections of transmitting units, described first
Reception device includes the first U sections of receiving units and the first V sections of receiving units, and second emitter includes the 2nd U sections of transmittings
Unit and the 2nd V sections of transmitting units, second reception device include the 2nd U sections of receiving units and the 2nd V sections of receiving units, because
This described power emergency communication system realizes two-band communication, and wherein U frequency range, UHF are the contractings of Ultra High Frequency
It writes, refers to UHF radio waves.UHF refers to 300~3000MHz of frequency, radio wave of the wavelength in 1m~1dm.The wave band
Radio wave is also known as decimetric wave.V-band, VHF are the abbreviation of Very High Frequency, i.e. very high frequency(VHF), refer to frequency band by
The radiobeam of 30Mhz to 300MHz.UHF feature be it is diffractive it is poor, to penetrate building ability strong, be suitable for built-up
Big and medium-sized cities.VHF feature be it is diffractive good, it is weak to penetrate building ability, is suitable for field open ground and operation on the sea unit.Cause
This has widened the working frequency range of the power emergency communication system using two-band, has widely application.
It is to be appreciated that as shown in Fig. 2, the power emergency communication system includes several ultrashort wave radio sets 7, Mei Yichao
Short-wave radio set 7 is wirelessly connected with the first alien frequencies interconnecting module 100 or the second alien frequencies interconnecting module 200 respectively, to realize multiple
Communication between ultrashort wave radio set 7.
In another preferred embodiment, wireless communication module is equipped in each ultrashort wave radio set, by wirelessly protecting
True technology or Bluetooth technology etc. constitute local communication network with other ultrashort wave radio sets.When wherein a ultrashort wave radio set receives
When the information sent to the first alien frequencies interconnecting module 100 and the second alien frequencies interconnecting module 200, rapidly by received information
It is forwarded by above-mentioned local communication network, so that preventing other local communication networks from receiving information occurs postponing or occurring event
The case where barrier.
In another preferred embodiment, each ultrashort wave radio set further includes impedance transformer, the impedance transformer
For the impedance matching in ultrashort wave radio set.In embodiments of the present invention, it is combined using transmission line with lumped parameter transformer
Mode, 9:Increase LC compensation network on the basis of 1 line transformer；Low-loss nickel-zinc ferrite power material is selected, is had
Conducive to the power capacity for improving the impedance transformer.
Preferably, each ultrashort wave radio set 7 is hand-held radio telephone, that is, intercom.Hand-held radio telephone is set with structure
Feature simple, small in size and easily operated is counted, can be widely applied in emergency communication.The hand-held radio telephone has fingerprint recognition
Function, when the hand-held radio telephone is when specific position detects fingerprint pressing, the data for obtaining fingerprint image and storage are compared
It is right, when comparing unsuccessful, generates alarm coding and be sent to the first alien frequencies interconnecting module 100 and the second alien frequencies interconnecting module
200, when comparing successfully, judge which kind of permission series is system enter by the fingerprint image of the identification.Wherein, different permission
Series corresponds to different frequency bandwidths, and permission series is higher, and frequency bandwidth is bigger.In addition, different permission series is corresponding different
Operating right, for example, duplexer is automatically closed in system when detecting that fingerprint image belongs to permission series lower user
Sending function, and the high user of permission series is just equipped with the function of being sent out information.
Wherein, as shown in figure 3, each ultrashort wave radio set 7 includes terminal module 75, third ultrashort wave antenna 71, receives
Send out switch 72, transmitting unit 73 and receiving unit 74；The third ultrashort wave antenna 71 is connect with transmit-receive switch 72, the transmitting-receiving
Switch 72 is connect with transmitting unit 73 and receiving unit 74 respectively, and the terminal module 75 is single with transmitting unit 73 and reception respectively
Member 74 connects.
Preferably, the transmitting unit 73 includes being sequentially connected modulation circuit 731, mixting circuit 732, power amplifier 733
With the first low-pass filter 735, the receiving unit 74 includes the first double-tuned filter 741, high-frequency amplifier 742, second
Double-tuned filter 743, frequency mixer 744, intermediate frequency filtering unit 745, intermediate frequency amplifier 746, detecting circuit 747, squelch circuit
748, the second low-pass filter 749, audio compression amplifying circuit 7410, wherein first double-tuned filter 741, high frequency
Amplifier 742, the second double-tuned filter 743, frequency mixer 744, intermediate frequency filtering unit 745, intermediate frequency amplifier 746, detection electricity
Road 747, the second low-pass filter 749, audio compression amplifying circuit 7410 are sequentially connected, and squelch circuit 748 is electric with detection respectively
Road 747, audio compression amplifying circuit 7410 connect, the modulation circuit 731 and audio compression amplifying circuit 7410 respectively with institute
State the connection of terminal module 75, first low-pass filter 735 and the first double-tuned filter 741 respectively with the transmit-receive switch
72 connections.
Wherein, the transmitting unit 73 includes being sequentially connected modulation circuit 731, mixting circuit 732,733 and of power amplifier
First low-pass filter 735, the modulation circuit 731 and connect with the terminal module 75, then enters by terminal module 75
Analog audio signal first pass through enter after modulation circuit 731 is modulated mixting circuit 732 generate after Frequency mixing processing it is corresponding
Then the signal with rf frequency after Frequency mixing processing is sent to power amplifier 733 and amplifies processing, so by rf frequency
After export to first low-pass filter 735, sent after transmit-receive switch 72 by third ultrashort wave antenna 71；It is described
In receiving unit 74, by first double-tuned filter 741, high-frequency amplifier 742, the second double-tuned filter 743, mixing
Device 744, intermediate frequency filtering unit 745, intermediate frequency amplifier 746, detecting circuit 747, the second low-pass filter 749, audio compression are put
Big electricity 7410 is sequentially connected, and squelch circuit 748 is connect with detecting circuit 747, audio compression amplifying circuit 7410 respectively, the sound
Frequency compression amplifying circuit 7410 is connect with the terminal module 75, transmit-receive switch 72 described in first double-tuned filter 741
Connection, then entered after transmit-receive switch 72 by the received radiofrequency signal of third ultrashort wave antenna and pass sequentially through the first double-tuned filter
741, after high-frequency amplifier 742, the second double-tuned filter 743, it is mixed to intermediate frequency using frequency mixer 744, using intermediate frequency
Envelope signal is detected through detecting circuit 747 after filter unit 745, intermediate frequency amplifier 746, the envelope signal is low through second respectively
It exports after bandpass filter 749 and squelch circuit 748 to the audio compression amplifying circuit 7410, audio compression amplifying circuit 7410
Audio signal is exported to the terminal module 75 and is played out.
Preferably, the first filter 735 of the transmitting unit 73 includes U sections of filters 7351 and V sections of filters 7352,
The transmitting unit further includes U/V switch 734, U/V switch respectively with U sections of filters, V sections of filters, power amplifier 733
It is connected with the first double-tuned filter 741, then the ultrashort wave radio set 7 can realize the communication of double frequency segment signal, widen hand-held
The working frequency range in radio station increases the scope of application of hand-held radio telephone.
Preferably, the terminal module 75 includes microphone 752, the first audio amplifier circuit 751, earphone horn 754 and the
Two audio amplifier circuits 753, the microphone 752 and the connection of the first audio amplifier circuit 751, the earphone horn 754 and second
Audio amplifier circuit 753 connects, and the modulation circuit 731 of first audio amplifier circuit 751 and the transmitting unit 73 connects,
The connection of the audio compression amplifying circuit 7410 of second audio amplifier circuit 753 and the receiving unit 74.
It should be understood that the microphone 752 and the first audio amplifier circuit 751 are connected, by the voice signal of microphone 752
The transmitting unit 73 is inputted after 751 enhanced processing of the first audio amplifier circuit, thus to outgoing in a manner of electromagnetic wave
It send.The earphone horn 754 and the second audio amplifier circuit 753 are connected, then believed from the received radio frequency of the receiving unit 74
The audio signal obtained after number being handled plays after amplifying processing through the earphone horn 754, can get clearly language
Sound signal.
Preferably, the terminal module 75 is wirelessly connected with the transmitting unit 73 and receiving unit 74 respectively, then is emitted
Unit 73 and receiving unit 74 can be used as the radio station host of ultrashort wave radio set, and terminal module 75 can be used as the receipts of ultrashort wave radio set
Send out front end.By the setting, energy loss and hardware setting can be reduced while guaranteeing that receiving and transmitting front end can be carried out and receive and send messages,
More conducively the long-time of outdoor subscriber uses.In addition, the settable hand operated generator of receiving and transmitting front end, more meets field survivorship
Application demand.
In a preferred embodiment, as shown in figure 4, first short-wave radio set 3 includes being sequentially connected the first short-wave antenna
31, the first filter unit 32, the first radio frequency converting unit 33, the first frequency-conversion processing unit 34,35 and of the first modulation/demodulation unit
First audio conversion unit 36；As shown in figure 5, second short-wave radio set 6 includes sequentially connected second short-wave antenna 61, the
Two filter units 62, the second radio frequency converting unit 63, the second frequency-conversion processing unit 64, the second modulation/demodulation unit 65 and second
Audio conversion unit 66, first audio conversion unit 36 are connect with the first audio frequency processing circuit 2, the second audio conversion
Unit 66 is connect with second audio frequency processing circuit 5.
In another preferred embodiment, first short-wave radio set 3 includes the first short-wave antenna, first filter, second
Filter, the first FPGA module, the first power amplifier, the first DSP module, the first converter, the second converter；Described first
Antenna tuner is provided on short-wave antenna.The antenna tuner is electrically connected input terminal and the second filter of first filter
The output end of wave device, the first filter output end are electrically connected the input terminal of the first converter；First FPGA module point
It is not electrically connected the output end of the first converter, the input terminal of the second converter and the first DSP module, second converter
Output end is electrically connected the input terminal of the first power amplifier, and the output end of first power amplifier is electrically connected second filter
Input terminal.When short-wave radio set receives signal, the analog radio-frequency signal from the first short-wave antenna through antenna tuner into
Row impedance matching, then analog radio-frequency signal enters first filter and is filtered.Through filtered analog radio-frequency signal
Into the first converter, become digital radio signal after the analog-to-digital conversion of the first converter.The digital radio signal is sent
Down-converted is carried out to the first FPGA module, digital radio signal is converted into digital baseband signal, and the first FPGA module will
Digital baseband signal is sent to the first DSP module, and the first DSP module carries out base band demodulating to digital baseband signal, then by base
The digital audio and video signals generated with demodulation return to the first FPGA module.
Preferably, first short-wave antenna 31 and the second short-wave antenna 61 are whip antenna, first ultrashort wave
Antenna 11, the second ultrashort wave antenna 41 and third ultrashort wave antenna 71 are yagi aerial.The effective height of short-wave antenna is big, spoke
Radio resistance is big, and high-efficient, directionality is good, high gain, pass band.Yagi aerial has good directionality, compared with dipole antenna
There is high gain, it is especially good to can be used to direction finding, telecommunication effect.If matching vertical angle and orientation rotation control device again,
It can more follow one's bent and be got in touch with the radio station in all directions including spacecraft, this impression is from upright antenna
It is unavailable.
Structure based on above-mentioned first short-wave radio set 3 and the second short-wave radio set 6, when first short-wave radio set 3 receives
When the radiofrequency signal that the second short-wave radio set hair 6 is sent, the radiofrequency signal enters the first filter unit by the first short-wave antenna 31
After 32 are filtered, then by the first radio frequency converting unit 33 analog radio-frequency signal is converted into digital radio signal, then led to
It crosses after the digital radio signal is carried out down-converted by the first frequency-conversion processing unit 34 and generates digital baseband signal, the number
Word baseband signal generates digital audio and video signals, the digital audio letter by the first modulation/demodulation unit 35 after base band demodulating
It number is converted into analog audio signal by the first audio conversion unit 36 again and is sent to 2 circuit of the first audio processing decaying
Processing is then forwarded to after the described first duplexing intermediate station 1 is handled and is sent to a ultrashort wave radio set.When first shortwave
When radio station 3 sends radiofrequency signal to second short-wave radio set 6, the described first duplexing intermediate station 1 believes the ultrashort wave received
Analog audio signal is generated after number being handled, first audio frequency processing circuit 2 decays the analog audio signal
Be sent to after processing the first audio conversion unit 36 generate digital audio and video signals, the digital audio and video signals by first modulation/
Digital baseband signal is generated after the baseband modulation of demodulating unit 35, the digital baseband signal is by the first frequency-conversion processing unit
34, which carry out upconversion process, generates digital radio signal, and the digital radio signal generates mould by the first radio frequency converting unit 33
Quasi- radiofrequency signal, the analog radio-frequency signal pass through first shortwave after the first filter unit 32 is filtered
Antenna 31 is sent to second short-wave radio set 6 and is handled.
To sum up, the invention discloses power emergency communication systems to pass through the first duplex intermediate station, the first audio processing electricity
Road and the electrical connection of the first short-wave radio set, the second alien frequencies interconnecting module include being sequentially connected electrically the second duplexing intermediate station, second
Audio frequency processing circuit and the electrical connection of the second short-wave radio set, then the first alien frequencies interconnecting module and the second alien frequencies interconnecting module pass through respectively
First short-wave radio set and the second short-wave radio set, which are realized, to be wirelessly connected, to realize the first alien frequencies interconnecting module and the second interconnecting module
Short wave communication；The first duplexer is connected with the first ultrashort wave antenna, the first emitter with first receiving device respectively；
Second duplexer is connected with the second ultrashort wave antenna, the second emitter and the second reception device respectively, second hair
Injection device and the second reception device are connected, then the first alien frequencies interconnecting module can be by the first ultrashort wave antenna and several super
Short-wave radio set is communicated, and the second alien frequencies interconnecting module can be carried out by the second ultrashort wave antenna and several ultrashort wave radio sets
Communication, the first receiving device and the first emitter distinguish the connection of the first audio frequency processing circuit, second emitter
It is connect respectively with the second audio frequency processing circuit with the second reception device, then it is defeated by first receiving device by a ultrashort wave radio set
Signal out can be sent to the first short-wave radio set by the first audio frequency processing circuit, then be sent to second by the first short-wave radio set
Then short-wave radio set is sent to by the second audio frequency processing circuit by the second sending device another ultrashort from the second short-wave radio set
Wave radio station, and because the first duplexer connects with the first ultrashort wave antenna, the first emitter and first receiving device respectively
It connects, second duplexer is connected with the second ultrashort wave antenna, the first emitter with first receiving device respectively, therefore can be same
Shi Jinhang reverse link communication, therefore the power emergency communication system realizes interconnecting for alien frequencies radio station part, improves wireless
The flexibility of net and survivability., realize the remote transmission of ultrashort wave signals, it more can all kinds of emergencies of flexible adaptation and severe
Environment.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (8)
1. a kind of power emergency communication system, which is characterized in that the first alien frequencies interconnecting module and second including wireless connection are different
Frequency interconnecting module；Wherein, the first alien frequencies interconnecting module includes the first duplexing intermediate station being sequentially connected electrically, at the first audio
Circuit and the first short-wave radio set are managed, the second alien frequencies interconnecting module includes the second duplexing intermediate station, second being sequentially connected electrically
Audio frequency processing circuit and the second short-wave radio set, first short-wave radio set and the second short-wave radio set are wirelessly connected；Described first pair
Work intermediate station includes the first ultrashort wave antenna, first duplexer, the first emitter and first receiving device, first duplex
Device is connected with the first ultrashort wave antenna, the first emitter with first receiving device respectively, first emitter and first
Reception device is connected；The second duplexing intermediate station include the second ultrashort wave antenna, the second duplexer, the second emitter and
Second reception device, second duplexer connect with the second ultrashort wave antenna, the second emitter and the second reception device respectively
It connects, second emitter and the second reception device are connected；The first receiving device and the first emitter difference the
The connection of one audio frequency processing circuit, second emitter and the first emitter are connect with the second audio frequency processing circuit respectively.
2. power emergency communication system as described in claim 1, which is characterized in that further include several ultrashort wave radio sets, often
One ultrashort wave radio set is wirelessly connected with the first alien frequencies interconnecting module or the second alien frequencies interconnecting module respectively.
3. power emergency communication system as claimed in claim 2, which is characterized in that each ultrashort wave radio set is hand-held
Radio station.
4. power emergency communication system as claimed in claim 1 or 2, which is characterized in that each ultrashort wave radio set includes
Terminal module, third ultrashort wave antenna, transmit-receive switch, transmitting unit and receiving unit；The third ultrashort wave antenna and transmitting-receiving
Switch connection, the transmit-receive switch connect with transmitting unit and receiving unit respectively, the terminal module respectively with transmitting unit
It is connected with receiving unit.
5. power emergency communication system as claimed in claim 4, which is characterized in that the terminal module includes microphone, first
Audio amplifier circuit, earphone horn and the second audio amplifier circuit, the microphone and the connection of the first audio amplifier circuit, the ear
The modulation circuit of machine loudspeaker and the connection of the second audio amplifier circuit, first audio amplifier circuit and the transmitting unit connects
It connects, second audio amplifier circuit is connected with the audio compression amplifying circuit of the receiving unit.
6. power emergency communication system as described in any one in claim 1-5, which is characterized in that the first short-wave radio set packet
Include sequentially connected first short-wave antenna, the first filter unit, the first radio frequency converting unit, the first frequency-conversion processing unit, first
Modulation/demodulation unit and the first audio conversion unit；Second short-wave radio set includes sequentially connected second short-wave antenna,
Two filter units, the second radio frequency converting unit, the second frequency-conversion processing unit, the second modulation/demodulation unit and the conversion of the second audio
Unit, first audio conversion unit are connect with first audio frequency processing circuit, second audio conversion unit and institute
State the connection of the second audio frequency processing circuit.
7. power emergency communication system as claimed in any one of claims 1 to 6, which is characterized in that the first emitter packet
The first U sections of transmitting units and the first V sections of transmitting units are included, the first receiving device includes the first U sections of receiving units and the first V
Section receiving unit, second emitter include the 2nd U sections of transmitting units and the 2nd V sections of transmitting units, and described second receives
Device includes the 2nd U sections of receiving units and the 2nd V sections of receiving units.
8. such as the described in any item power emergency communication systems of claim 1-7, which is characterized in that first short-wave antenna and
Second short-wave antenna is whip antenna, and first ultrashort wave antenna, the second ultrashort wave antenna and third ultrashort wave antenna are equal
For yagi aerial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810563185.5A CN108882218A (en) | 2018-06-04 | 2018-06-04 | power emergency communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810563185.5A CN108882218A (en) | 2018-06-04 | 2018-06-04 | power emergency communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108882218A true CN108882218A (en) | 2018-11-23 |
Family
ID=64336274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810563185.5A Pending CN108882218A (en) | 2018-06-04 | 2018-06-04 | power emergency communication system |
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| CN (1) | CN108882218A (en) |
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