CN2792034Y - Backpack scatter communication device - Google Patents
Backpack scatter communication device Download PDFInfo
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- CN2792034Y CN2792034Y CN 200520023900 CN200520023900U CN2792034Y CN 2792034 Y CN2792034 Y CN 2792034Y CN 200520023900 CN200520023900 CN 200520023900 CN 200520023900 U CN200520023900 U CN 200520023900U CN 2792034 Y CN2792034 Y CN 2792034Y
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Abstract
The utility model discloses a knapsack scatter communication device, which relates to a low capacity portable scatter communication device in the communication field. The utility model is composed of a voice transmitting and receiving appliance, a combined antenna, a voice codec, an auxiliary multiplexer-demultiplexer, a transmitting receiver module, a duplexer, a modulator, a demodulator, an intermediate amplifying unit, a power supply and other components. The utility model uses a modem for realizing the goal of scatter communication, wherein the modem of linear frequency modulation signals and in-band quadruple frequency diversity signal forms has strong capability of single-frequency interference resistance and channel fading resistance. The utility model also has the advantages of high integration degree, portability, miniaturization, convenient operation, stable and reliable performance, good maneuverable capability, etc. The utility model is especially suitable for being used as a scatter communication device carried by a single person for communication in low capacity scatter communication systems.
Description
Technical field
The utility model relates to a kind of backpack scatter communication device in the communications field, is specially adapted to do in the scatter communication system of low capacity the scatter communication equipment of lightweight.
Background technology
Traditional scatter communication device is because bulky, complex structure and power hungry, substantially all adopt the application form at fixed station or vehicle-mounted station, shortcomings such as the equipment cost that causes thus is higher, maneuverability is relatively poor have limited the extensive use of scatter communication in each field greatly.
Summary of the invention
The purpose of this utility model is to avoid the weak point in the above-mentioned background technology and backpack scatter communication device that a kind of low capacity, lightweight are provided, the utlity model has little, in light weight, the integrated degree height of volume, characteristics such as easy and simple to handle, can by single bear carry out motor-driven open-minded; The utility model has adopted the signal form of 4 repetition rate diversity in the linear FM signal band with stronger anti-single-frequency interference and anti-channel fading ability, therefore not only economy, reliability and the mobility of system had obtained tangible improvement more in the past, and anti-channel fading and anti-single-frequency interference performance also are greatly improved.
The purpose of this utility model be achieved in that it by speech electrophone 1, power supply 2, modular antenna 3, voice codec 4, auxiliary multiplexer-demultiplexer 5, modulator 6, transmitter module 7, duplexer 8, receiver module 9, in put element circuit 10, demodulator 11 is formed, wherein speech electrophone 1 is gone into end 1 pin and is sent voice port A and be connected, go out to hold 2 pin to be connected with reception voice port B; The input port 1,3 of voice codec 4 links to each other with the output port 2 of speech electrophone 1, the output port 4 of auxiliary multiplexer-demultiplexer 5 respectively, and 2,4 of output ports link to each other with the input port 3 of auxiliary multiplexer-demultiplexer 5, the input port 3 of speech electrophone 1 respectively; The input port 1 of auxiliary multiplexer-demultiplexer 5 links to each other with transmission FPDP C by data wire, output port 2 links to each other with reception FPDP D by data wire, output port 5,6 links to each other with the input port 1,2 of modulator 6 respectively, and 7,8 of input ports link to each other with the output port 1,2 of demodulator 11 respectively; The input port 1 of transmitter module 7 links to each other with the output port 3 of modulator 6, and output port 2 links to each other with two input ports 1 of going up device 8; In put element circuit 10 input port 1 link to each other with the output port 2 of receiver module 9, output port 2 links to each other with the input port 3 of demodulator 11; The input port 1 of duplexer 8 links to each other with the output port 2 of transmitter module 7, and output port 2 links to each other with the input port 1 of receiver module 9, and its input/output end port 3 links to each other with the radio frequency input/output end port 1 of small combined antenna 3 by radio frequency cable; Power supply 2 goes out the corresponding power end with each parts of end+V voltage end and connects.
Modulator 6 is made up of 4 frequency CHIRP-BPSK (linear frequency modulation biphase phase shift keying) Low Medium Frequency modulators 12, D/A converter 13, local oscillator module 14, frequency mixer 15, band pass filter 16 and amplifier 17 in the band, wherein input port 1,2 pin of 4 frequency CHIRP-BPSK Low Medium Frequency modulators 12 link to each other with output port 5,6 pin of auxiliary multiplexer-demultiplexer 5 respectively in the band, and output port 3 pin link to each other with input port 1 pin of D/A converter 13 by data/address bus; Input port 1,2 pin of frequency mixer 15 link to each other with output port 2 pin of D/A converter 13, output port 1 pin of local oscillator module 14 by holding wire respectively, and its output port 3 pin link to each other with input port 1 pin of band pass filter 16 by holding wire; Input port 1 pin of amplifier 17 links to each other with output port 2 pin of band pass filter 16 by holding wire, output port 2 pin then link to each other with input port 1 pin of transmitter module 7 by immediate frequency cable, and 4 frequently CHIRP-BPSK Low Medium Frequency modulators 12, D/A converter 13, local oscillator module 14, frequency mixer 15, band pass filter 16 and amplifier 17 are respectively gone into end 7 pin and power supply 2 and gone out end+V voltage end and be connected, respectively go into to hold 8 pin to hold with ground to be connected in the band.
Demodulator 11 is made up of A/D converter 18, digital down converter 19, matched filter 20, coherent detector 21, integration judging module 22, delivery module 23, bit synchronization module 24, differential decoding module 25, wherein input port 1 pin of A/D converter 18 with in put element circuit 10 output port 2 pin link to each other, output port 2 pin link to each other with input port 1 pin of digital down converter 19 by data wire; Input port 1,2 pin of matched filter 20 link to each other with output port 2,3 pin of digital down converter 19 respectively, and its output port 3,4 pin link to each other with input port 1,2 pin of coherent detector 21 respectively; Input port 1,3 pin of integration judging module 22 link to each other with output port 3 pin of coherent detector 21, output port 2 pin of bit synchronization module 24 respectively, and its output port 2,4 pin link to each other with input port 1 pin of differential decoding module 25, input port 4 pin of coherent detector 21 respectively; Output port 2 pin of differential decoding module 25 then link to each other with input port 8 pin of auxiliary multiplexer-demultiplexer 5; Input port 1,2 pin of delivery module 23 link to each other with output port 3,4 pin of matched filter 20 respectively, and output port 3 pin link to each other with input port 1 pin of bit synchronization module 24; Output port 2 pin of bit synchronization module 24 then link to each other with input port 3 pin of integration judging module 22 and input port 7 pin of auxiliary multiplexer-demultiplexer 5 respectively, and A/D converter 18, digital down converter 19, matched filter 20, coherent detector 21, integration judging module 22, delivery module 23, bit synchronization module 24, differential decoding module 25 are respectively gone into end 7 pin and power supply 2 and gone out end+V voltage end and be connected, respectively go into to hold 8 pin to hold with ground to be connected.
The utility model is compared background technology and is had following advantage:
The utility model in same equipment cabinets integrated voice codec 4, auxiliary multiplexer-demultiplexer 5, modulator 6, transmitter module 7, duplexer 8, receiver module 9, in put parts such as element circuit 10, demodulator 11, reduced the volume and the weight of traditional scatter communication system greatly, the maneuverability of equipment is significantly improved.
2. the utility model has adopted and has been convenient to motor-driven small combined antenna 3, antenna can be decomposed into a plurality of modules under travel position is positioned in the same backpack knapsack and carries out motor-driven transportation, and equipment then can be finished combination and installation to antenna need open the time at short notice.
3. modulator 6 of the present utility model, demodulator 11 adopted have that stronger anti-single-frequency is disturbed and the linear FM signal band of anti-channel fading ability in the signal form of 4 repetition rate diversity, so the anti-channel fading of system and anti-single-frequency interference performance are greatly improved.
4. critical piece of the present utility model adopts extensive field programmable device to make, and therefore can realize modification to this device operating parameters neatly by disposing different programs.
5. the integrated degree height of the utility model, so volume is little, in light weight, stable and reliable for performance, easy to maintenance.
Description of drawings
Fig. 1 is the utility model functional-block diagram.
Fig. 2 is the electrical schematic diagram of the utility model modulator 6 embodiment.
Fig. 3 is the electrical schematic diagram of the utility model demodulator 11 embodiment.
Embodiment
Referring to figs. 1 through Fig. 3, the utility model by speech electrophone 1, power supply 2, modular antenna 3, voice codec 4, auxiliary multiplexer-demultiplexer 5, modulator 6, transmitter module 7, duplexer 8, receiver module 9, in put element circuit 10, demodulator 11 is formed, Fig. 1 is an electric functional-block diagram of the present utility model, and embodiment presses Fig. 1 connection line.Wherein the effect of speech electrophone 1 is to receive or the output voice signal, to receive voice signal and carry out the speech coding processing by its outbound port 2 pin input voice codec 4, or with voice codec 4 decoded voice signals input speech electrophones 1 output voice signals.The effect of voice codec 4 is voice signal to be carried out encoding and decoding handle, the auxiliary multiplexer-demultiplexer 5 of voice signal input behind the coding.The effect of auxiliary multiplexer-demultiplexer 5 is the speech coding signals that receive voice codec 4 outputs from its input port 3, or send the data-signal of FPDP C from 1 input of its inbound port, receive the data-signal of FPDP D from its outbound port 2 outputs, its transmission speech of receiving or data-signal are carried out behind the digital multiplexing respectively by its outbound port 5,6 input modulators 6, simultaneously the reception digital voice of demodulator 11 outbound ports 1,2 outputs or data-signal assist after the tap respectively by its outbound port 2,4 outputs or import voice codec 4.The OSOK-2 type handle type electrophone that embodiment speech electrophone 1 adopts 4381 factories to produce is made, and voice codec 4, auxiliary multiplexer-demultiplexer 5 adopt a U.S. Alterna company to produce Cyclone series digit field-programmable chip EP1C12 and make.
The effect of the utility model modulator 6 is that speech, the data digital multiplexed signal of auxiliary multiplexer-demultiplexer 5 inputs are carried out the modulation of CHIRP-BPSK Low Medium Frequency, and the quadruple diversity CHIRP-BPSK Low Medium Frequency signal after the modulation goes out end 2,3 pin input transmitter module 7 by it.Modulator 6 is made up of 4 frequency CHIRP-BPSK Low Medium Frequency modulators 12, D/A converter 13, local oscillator module 14, frequency mixer 15, band pass filter 16 and amplifier 17 in the band, and Fig. 2 is the electrical schematic diagram of the utility model modulator 6, and embodiment presses Fig. 2 connection line.The speech of wherein auxiliary multiplexer-demultiplexer 5 outputs, the inbound port 1 of 4 frequency CHIRP-BPSK Low Medium Frequency modulators 12 in the data digital signal input tape, 2 pin, Low Medium Frequency digital signal after 4 frequency CHIRP-BPSK Low Medium Frequency modulators 12 will be modulated in the band is converted to analog signal behind D/A converter 13, and the local oscillation signal that is produced with local oscillator module 14 in frequency mixer 15 carries out mixing and obtains the modulation signal that intermediate frequency is 70MHz, this modulated intermediate frequency signal is again by band pass filter 16, amplifier 17 carries out bandpass filtering and amplifies back input transmitter module 7, is sent by transmitter module 7.4 frequency CHIRP-BPSK Low Medium Frequency modulators 12 can be made with the Cyclone series digit field-programmable chip EP1C12 that voice codec 4, auxiliary multiplexer-demultiplexer 5 adopt same U.S. Alterna company to produce in the embodiment band.The AD9763 chip manufacturing that D/A converter 13 adopts U.S. AD company to produce; The AD9854 chip manufacturing that local oscillator module 14 adopts U.S. AD company to produce; The HSB3 frequency mixer that frequency mixer 15 adopts Chengdu industry light company to produce is made; The SBP-70 band pass filter that band pass filter 16 adopts the company in sky, Chengdu to produce is made; The XN402 amplifier that amplifier 17 adopts the 13rd research institute of science and technology group of China Electronics to produce is made.
The utility model transmitter module 7 effect be modulated intermediate frequency signal is carried out that carrier spectrum is moved and power amplification after by its outbound port 2 input duplexers 8; The effect of duplexer 8 is can pass through modular antenna 3 to send the quadruple diversity rf modulated signal that transmitter modules 7 need transmission, can receive the quadruple diversity signal that modular antenna 3 is received again and change and export to receiver module 9; The effect of modular antenna 3 is transmitting-receiving quadruple diversity signals of communication; The effect of receiver module 9 is reception quadruple diversity signals of communication of receiving duplexer 8 input, and converts thereof into after the intermediate-freuqncy signal of 70MHz by putting element circuit 10 in its outbound port 2 inputs; In put element circuit 10 effect be that the 70MHz modulated intermediate frequency signal that receiver module 9 is exported is carried out mixing, filtering, processing and amplifying, and the Low Medium Frequency quadruple diversity modulation signal after will handling inputs to and carries out demodulation in the demodulator 11, embodiment transmitter module 7 adopts the general transmitter module circuit production of self-control, duplexer 8 adopts the general small capacity double multiplexer parts of self-control to make, the small combined antenna element that modular antenna 3 adopts Nanjing 707 to be produced is made, receiver module 9 adopts the general receiver circuit parts of self-control to make, in put element circuit 10 and adopt the general intermediate level circuit parts of self-control to make.
The effect of the utility model demodulator 11 foot is demodulated to the quadruple diversity Low Medium Frequency modulation signal that receives after the digital signal of speech, data by the auxiliary multiplexer-demultiplexer 5 of its outbound port 1,2 inputs, it is made up of A/D converter 18, digital down converter 19, matched filter 20, coherent detector 21, integration judging module 22, delivery module 23, bit synchronization module 24, differential decoding module 25, Fig. 3 is the electrical schematic diagram of the utility model demodulator 11, and embodiment presses Fig. 3 connection line.Put among Fig. 3 and be converted to digital Low Medium Frequency signal after Low Medium Frequency CHIRP-BPSK signal input A/D converter 18 that element circuit 10 exported is sampled, input digit low-converter 19 is converted to homophase subsequently, the digital baseband signal of two branch roads of quadrature, this baseband signal is carried out after the matched filtering resultant correlation peak signal branch for two-way through matched filter 20: by its go out end 3 pin will one tunnel input coherent detector 21 with integration judging module 22 in carry out coherent detection and integration judgement, going out end 4 pin by it extracts carrying out bit synchronization in another road input delivery module 23 and the bit synchronization module 24, finish integration judgement to received signal subsequently under the control of the commutator pulse exported of integration judging module 22 synchronization modules 24 on the throne, the letter sign indicating number after the judgement can be sent to auxiliary multiplexer-demultiplexer 5 inbound ports 8 with the bit synchronization clock of bit synchronization module 24 outputs after finishing differential decoding through differential decoding module 25 again, finish the function of auxiliary tap in 7.The AD9218 chip manufacturing that embodiment A/D converter 18 adopts U.S. AD company to produce; The Stratix series digit field programmable device EP1S40 chip manufacturing that digital down converter 19, matched filter 20, coherent detector 21, integration judging module 22, delivery module 23, bit synchronization module 24, differential decoding module 25 adopt a U.S. altera corp to produce.
The effect of the utility model power supply 2 provides the direct-current working volts of whole device, and embodiment adopts commercially available general integrated constant voltage dc source module making, and its output+V voltage is+3.3V.
The utility model operation principle is as follows:
When this device was in the state of transporting speech signal, voice codec 4 received from the voice signal of speech electrophone 1 and it is carried out speech coding handle, and subsequently the speech coding signal is sent in the auxiliary multiplexer-demultiplexer 5; When if this device is in the state of transmission of data signals, auxiliary 5 receptions of multiplexer-demultiplexer are by the transmission data that send FPDP C input.Auxiliary multiplexer-demultiplexer 5 carries out the speech received or data message to send into after digital multiplexing is handled and carries out the CHIRP-BPSK modulation in the modulator 6, and the quadruple diversity signal after the modulation is then through outwards launching by small combined antenna 3 behind transmitter module 7, the duplexer 8 again; Simultaneously small combined antenna 3 also receives in the band that the other side backpack scattering device sends 4 CHIRP-BPSK signals frequently, and with this signal input receiver module 9, in put to send into behind the element circuit 10 and carry out demodulation process in the demodulator 11.When being in the speech accepting state, the speech coding signal after the demodulation is sent into speech electrophone 1 after then reducing by voice codec 4; If when being in data transmission state, the data after the demodulation are then undertaken directly externally exporting by receiving FPDP D after tap is handled by auxiliary multiplexer-demultiplexer 5.
The utility model mounting structure is as follows: removing speech electrophone 1 among Fig. 1 to Fig. 3, modular antenna 3 outer remaining circuit devices are pressed Fig. 1 to Fig. 3 connection line, be installed in two block lengths, wide is 135 * 260mm and three block lengths, wide is in the printed board of 80 * 200mm, then printed board be installed in one long, wide, height is in the equipment cabinets of 320 * 285 * 128mm, on the front panel of cabinet, install and speech electrophone 1, the cable socket that modular antenna 3 connects, also install and send FPDP C, receive the cable socket of FPDP D, the power input socket is installed on the plate in the back, speech electrophone 1 is mounted on the front panel, be connected with socket on its cabinet by cable, modular antenna 3 is connected the assembly cost utility model by cable with socket on its cabinet.
Claims (3)
1. backpack scatter communication device, it by speech electrophone (1), power supply (2), modular antenna (3), voice codec (4), auxiliary multiplexer-demultiplexer (5), transmitter module (7), duplexer (8), receiver module (9), in put element circuit (10) and form, it is characterized in that: also be made up of modulator (6), demodulator (11), wherein speech electrophone (1) goes into to hold 1 pin to be connected, to go out to hold 2 pin to be connected with reception voice port (B) with transmission voice port (A); The input port 1,3 of voice codec (4) links to each other with the output port 2 of speech electrophone (1), the output port 4 of auxiliary multiplexer-demultiplexer (5) respectively, and 2,4 of output ports link to each other with the input port 3 of auxiliary multiplexer-demultiplexer (5), the input port 3 of speech electrophone (1) respectively; The input port 1 of auxiliary multiplexer-demultiplexer (5) links to each other with transmission FPDP (C) by data wire, output port 2 links to each other with reception FPDP (D) by data wire, output port 5,6 links to each other with the input port 1,2 of modulator (6) respectively, and 7,8 of input ports link to each other with the output port 1,2 of demodulator (11) respectively; The input port 1 of transmitter module (7) links to each other with the output port 3 of modulator (6), and output port 2 links to each other with the input port 1 of duplexer (8); In put element circuit (10) input port 1 link to each other with the output port 2 of receiver module (9), output port 2 links to each other with the input port 3 of demodulator (11); The input port 1 of duplexer (8) links to each other with the output port 2 of transmitter module (7), output port 2 links to each other with the input port 1 of receiver module (9), and its input/output end port 3 links to each other by the radio frequency input/output end port 1 of radio frequency cable with small combined antenna (3); Power supply (2) goes out the corresponding power end with each parts of end+V voltage end and connects.
2. backpack scatter communication device according to claim 1, it is characterized in that: modulator (6) is made up of 4 frequency CHIRP-BPSK Low Medium Frequency modulators (12), D/A converter (13), local oscillator module (14), frequency mixer (15), band pass filter (16) and amplifier (17) in the band, wherein input port 1,2 pin of 4 frequency CHIRP-BPSK Low Medium Frequency modulators (12) link to each other with output port 5,6 pin of auxiliary multiplexer-demultiplexer (5) respectively in the band, and output port 3 pin link to each other with input port 1 pin of D/A converter (13) by data/address bus; Input port 1,2 pin of frequency mixer (15) link to each other with output port 2 pin of D/A converter (13), output port 1 pin of local oscillator module (14) by holding wire respectively, and its output port 3 pin link to each other with input port 1 pin of band pass filter (16) by holding wire; Input port 1 pin of amplifier (17) links to each other with output port 2 pin of band pass filter (16) by holding wire, output port 2 pin then link to each other with input port 1 pin of transmitter module (7) by immediate frequency cable, and 4 frequently CHIRP-BPSK Low Medium Frequency modulators (12), D/A converter (13), local oscillator module (14), frequency mixer (15), band pass filter (16), amplifier (17) are respectively gone into end 7 pin and power supply (2) and gone out end+V voltage end and be connected, respectively go into to hold 8 pin to hold with ground to be connected in the band.
3. backpack scatter communication device according to claim 1 and 2, it is characterized in that: demodulator (11) is made up of A/D converter (18), digital down converter (19), matched filter (20), coherent detector (21), integration judging module (22), delivery module (23), bit synchronization module (24), differential decoding module (25), wherein input port 1 pin of A/D converter (18) with in put element circuit (10) output port 2 pin link to each other, output port 2 pin link to each other with input port 1 pin of digital down converter (19) by data wire; Input port 1,2 pin of matched filter (20) link to each other with output port 2,3 pin of digital down converter (19) respectively, and its output port 3,4 pin link to each other with input port 1,2 pin of coherent detector (21) respectively; Input port 1,3 pin of integration judging module (22) link to each other with output port 3 pin of coherent detector (21), output port 2 pin of bit synchronization module (24) respectively, and its output port 2,4 pin link to each other with input port 1 pin of differential decoding module (25), input port 4 pin of coherent detector (21) respectively; Output port 2 pin of differential decoding module (25) then link to each other with input port 8 pin of auxiliary multiplexer-demultiplexer (5); Input port 1,2 pin of delivery module (23) link to each other with output port 3,4 pin of matched filter (20) respectively, and output port 3 pin link to each other with input port 1 pin of bit synchronization module (24); Output port 2 pin of bit synchronization module (24) then link to each other with input port 3 pin of integration judging module (22) and input port 7 pin of auxiliary multiplexer-demultiplexer (5) respectively, and A/D converter (18), digital down converter (19), matched filter (20), coherent detector (21), integration judging module (22), delivery module (23), bit synchronization module (24), differential decoding module (25) are respectively gone into end 7 pin and power supply (2) and gone out end+V voltage end and be connected, respectively go into to hold 8 pin to hold with ground to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520023900 CN2792034Y (en) | 2005-04-20 | 2005-04-20 | Backpack scatter communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520023900 CN2792034Y (en) | 2005-04-20 | 2005-04-20 | Backpack scatter communication device |
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| Publication Number | Publication Date |
|---|---|
| CN2792034Y true CN2792034Y (en) | 2006-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520023900 Expired - Lifetime CN2792034Y (en) | 2005-04-20 | 2005-04-20 | Backpack scatter communication device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883211A (en) * | 2015-04-21 | 2015-09-02 | 中国电子科技集团公司第五十四研究所 | VHF/UHF air beyond visual range communication device based on enabling communication technology |
-
2005
- 2005-04-20 CN CN 200520023900 patent/CN2792034Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883211A (en) * | 2015-04-21 | 2015-09-02 | 中国电子科技集团公司第五十四研究所 | VHF/UHF air beyond visual range communication device based on enabling communication technology |
| CN104883211B (en) * | 2015-04-21 | 2018-06-12 | 中国电子科技集团公司第五十四研究所 | A kind of VHF/UHF based on the communication technology of energizing is to empty beyond-the-horizon communication device |
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| C14 | Grant of patent or utility model | ||
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| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150420 Granted publication date: 20060628 |