CN201750418U - High-stability common-frequency fiber optic repeater - Google Patents
High-stability common-frequency fiber optic repeater Download PDFInfo
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- CN201750418U CN201750418U CN2009201691020U CN200920169102U CN201750418U CN 201750418 U CN201750418 U CN 201750418U CN 2009201691020 U CN2009201691020 U CN 2009201691020U CN 200920169102 U CN200920169102 U CN 200920169102U CN 201750418 U CN201750418 U CN 201750418U
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Abstract
The utility model discloses a high-stability common-frequency fiber optic repeater comprising modules like a power source, an antenna feed system, a radio receiver, a radio emitter, an optical transmission receiver, an optical transmission emitter, an upper programmable transducer, a lower programmable transducer, a sending power driver, an electronic switch, a microprocessor, etc, and microprocessor working software. The high-stability common-frequency fiber optic repeater can realize mutual interaction of the field intensity coverage of a plurality of fiber optic repeaters, has the characteristics of reliable coverage, small same frequency interference, non-feedback self-excitation, and is suitable for the relay transmission of radio communication.
Description
Technical field
The utility model is a radio communication relay transmission technology, is applicable to the relay transmission of wireless communication system, belongs to wireless communication technology field.
Background technology
In the optical-fiber wireless relay system of using at present, extensively use the optical fiber direct amplification relaying technique, its system configuration normally adopts the form of the composition that is connected one or more remote terminations by the near-end machine by fibre circuit, can realize mutual radio communication relaying forwarding capability between near-end machine and the remote termination, to be the near-end machine become light signal to restore into the signal of telecommunication and send with identical frequency process to remote termination by Optical Fiber Transmission the wireless receiving conversion of signals to its method of work, and remote termination becomes light signal to restore into the signal of telecommunication and send with identical frequency process to the near-end machine by Optical Fiber Transmission the wireless receiving conversion of signals; The subject matter of its existence is; for the relay system that a plurality of optical fiber repeater constituted; when the field intensity covering of adjacent fiber repeater is interweaved; usually can have more than one optical fiber repeater and receive the situation of the radio carrier frequency signal of same travelling carriage emission; if receiving the optical fiber repeater of same CF signal in this case all should receive CF signal and transmitted; then can produce co-channel interference and feedback self-excitation; and travelling carriage also can receive a plurality of homogenous frequency signals of being launched by the different fiber repeater simultaneously in the covering interwoven region; and each repeater is because the CF signal of emission produces the beat frequency interference owing to the carrier frequency frequency difference; but in actual applications; need the field intensity covering of wireless relay system to be interweaved, reliable to guarantee covering.
Summary of the invention
In view of the foregoing, the purpose of this utility model is to provide a kind of high-stability common-frequency optical fiber repeater, makes this optical fiber repeater can realize that the field intensity covering is interweaved, have and cover reliably, co-channel interference is little, does not have the characteristics of back coupling self-excitation, is applicable to the characteristics of radio communication relay transmission.
For achieving the above object, the utility model is introduced a kind of by power supply, antenna-feedback system, wireless receiver, transmitting set, the optical transmission receiver, the high-stability common-frequency optical fiber repeater that optical transmission transmitter and microprocessor etc. constitute, it is characterized in that having a transmission control unit (TCU), a low-converter able to programme is arranged in this transmission control unit (TCU), an electronic switch, one sends power splitter, a upconverter able to programme, the CF signal output of wireless receiver is connected with the CF signal input of low-converter able to programme, an electrical signal of the intermediate-freuqncy signal output of low-converter able to programme and optical transmission receiver is connected with two signal input switch contacts of electronic switch respectively, the signal output switch contact of electronic switch is connected with the CF signal input that sends power splitter, two CF signal outputs that send power splitter are connected with the electric signal input end of optical transmission transmitter and the signal input end of intermediate frequency of upconverter able to programme respectively, the CF signal output of upconverter able to programme is connected with the CF signal input of transmitting set, the CF signal amplifier gain control signal output ends of wireless receiver is connected the programming input of low-converter able to programme with a mould of microprocessor/number conversion working signal input, the programming input of upconverter able to programme, electronic switch operating state control end, an electric signal input end of optical transmission receiver and an electrical signal of optical transmission receiver are connected with the working signal input/output terminal of microprocessor respectively.
Operation principle of the present utility model is:
When radio receiving-transmitting unit during at high-stability common-frequency optical fiber repeater area of coverage radio carrier frequency signal, usually have one or more high-stability common-frequency optical fibers repeater and receive this CF signal, the high-stability common-frequency optical fiber repeater of receiving this CF signal will receive the automatic gaining controling signal of CF signal amplifier and measure, coding obtains reacting the carrier frequency gain signal coding that receives CF signal intensity and is stored, because if the measurement of CF signal intensity is implemented in the wireless receiver prime, it is big then to measure difficulty owing to CF signal intensity is too low, measuring at the CF signal amplifier out then can be owing to the automatic gain compensation of amplifier, make that the measurement numerical precision is relatively poor, adopt the next corresponding method that receives CF signal intensity that characterizes of the automatic gaining controling signal that receives the CF signal amplifier of measuring thus, be convenient to like this implement, again with this carrier frequency gain signal coding, the address code of time corresponding identity code and this high-stability common-frequency optical fiber repeater sends to other high-stability common-frequency optical fiber repeaters that connect by optical fiber by the optical transmission transmitter; The address code of carrier frequency gain signal coding, time corresponding identity code and corresponding high-stability common-frequency optical fiber repeater that the high-stability common-frequency optical fiber repeater will be sent by other high-stability common-frequency optical fiber repeaters that the optical transmission receiver receives is stored, and this coding is sent to other high-stability common-frequency optical fiber repeaters that connect by optical fiber by the optical transmission transmitter; Each high-stability common-frequency optical fiber repeater has all obtained the address code of carrier frequency gain signal coding, time corresponding identity code section and the corresponding high-stability common-frequency optical fiber repeater of each high-stability common-frequency optical fiber repeater like this; Each carrier frequency gain signal coding in same corresponding time tag sign indicating number section that the high-stability common-frequency optical fiber repeater will be stored compares, promptly the carrier frequency gain signal coding that interval time is not exceeded this yard section is made comparisons, by the encode size of pairing CF signal intensity of carrier frequency gain signal the address code of high-stability common-frequency optical fiber repeater is sorted, the identical situation of the corresponding CF signal intensity of a plurality of carrier frequency gain signal codings is next should just carry out the height arrangement by the preferential weighted code of correspondence by a plurality of carrier frequency gain signal coding corresponding address sign indicating numbers if having in ordering, like this, sorting, then to receive CF signal the strongest for it in the highest high-stability common-frequency optical fiber repeater, or its priority is the highest in a plurality of high-stability common-frequency optical fiber repeaters with identical reception CF signal intensity, have and preferentially enter the function that transfering the letter connects operating state, the CF signal that the highest high-stability common-frequency optical fiber repeater of i.e. this ordering receives wireless receiver down-converts to the intermediate-freuqncy signal of programming appointment, this intermediate-freuqncy signal is sent to other high-stability common-frequency optical fiber repeaters that connect by optical fiber by the optical transmission transmitter, and with this intermediate-freuqncy signal upconvert to the programming appointment the carrier frequency frequency after launch by transmitting set, for not receiving the radio carrier frequency signal and will sending to other high-stability common-frequency optical fiber repeaters that connect by optical fiber by the optical transmission transmitter by the intermediate-freuqncy signal that the optical transmission receiver receives according to the lower high-stability common-frequency optical fiber repeater of above-mentioned ranking results ordering, and by the intermediate-freuqncy signal that this high-stability common-frequency optical fiber repeater receives the optical transmission receiver up-convert to the programming appointment the carrier frequency frequency after launch by transmitting set, the frequency stability of the local vibration source that adopts in the process of above-mentioned up-conversion and down-conversion and accuracy index satisfy caused carrier frequency frequency difference and are in outside the useful frequency range that the pairing communication system of relay services requires, the phenomenon that the same CF signal of so just having avoided a plurality of high-stability common-frequency optical fibers repeater to receive is transmitted, also because the CF signal local vibration source that all high-stability common-frequency optical fiber repeaters are launched has adopted high stability and high accuracy reference source, therefore the beat frequency that can avoid co-channel interference to produce disturbs, in conversion process, the purpose that low-converter able to programme is set is that being convenient to dock the frequency-selecting of recording the frequency signal receives, the purpose that upconverter able to programme is set is to be convenient to the CF signal of former carrier frequency signal transformation for another frequency, with avoid adjacent high-stability common-frequency optical fiber repeater receive brought when transmitting the back coupling self-excitation.
Description of drawings
Fig. 1 is the high-stability common-frequency optical fiber repeater pie graph of the utility model one embodiment.
Embodiment
Below be that example illustrates embodiment of the present utility model with the accompanying drawing.
Fig. 1 expresses the high-stability common-frequency optical fiber repeater pie graph of an embodiment, wherein:
(1) is wireless receiver, adopt multi-modulation scheme, multiband, have the programmable radio receiver module that receives carrier-frequency amplifier automatic gain control function and carrier-frequency amplifier automatic gaining controling signal output function, and under the control of microprocessor, enter the setting operating state; (2) be antenna-feedback system, adopt compositions such as antenna, radio frequency feed line, power splitter and duplexer; (3) be transmitting set, adopt the programmable radio transmitter module of multi-modulation scheme, multiband, and under the control of microprocessor and programming, enter the setting operating state; A is a transmission control unit (TCU); (4) be low-converter able to programme, adopt modules such as local oscillation circuit module able to programme, frequency mixer, filter to form, the purpose that low-converter is set is that being convenient to dock the frequency-selecting of recording the frequency signal receives; (5) be electronic switch, adopt operating frequency and time constant to satisfy the single-pole double throw electronic switching device of transmission CF signal index; (6) for receiving power splitter, adopt conventional power splitter device; (7) be upconverter able to programme, adopt modules such as local oscillation circuit module able to programme, frequency mixer, filter to form, the purpose that upconverter is set is to be convenient to the CF signal of former carrier frequency signal transformation for another frequency; In the process of above-mentioned up-conversion and down-conversion, adopt the frequency stability of local vibration source and accuracy index satisfy caused carrier frequency frequency difference and be in outside the desired useful frequency range of communication system, as: communication system is voice communication, carrier frequency is 450MHz, the voice band of its transmission is 300Hz～3400Hz, and then selecting the frequency stability of local vibration source and accuracy index is ± 5 * 10
-8, the carrier frequency frequency difference that it causes is (450MHz) * (5 * 10
-8)=22.25Hz＜300Hz promptly is in outside the useful frequency range of communication system requirement, can satisfy the demand of communication system; (8) be microprocessor, adopt Single Chip Microcomputer (SCM) system to constitute, wherein contain the input of mould/number conversion function, be used for the carrier-frequency amplifier automatic gaining controling signal of input is carried out mould/number conversion; (9) be the optical transmission transmitter, adopt optical-electrical converter and wavelength division multiplexer to constitute, its light signal output end is connected by the light signal input of external fibre circuit with the optical transmission receiver of other optical fiber repeater; (10) be the optical transmission receiver, adopt optical-electrical converter and Wave decomposing multiplexer to constitute, its light signal input is connected by the light signal output end of external fibre circuit with the optical transmission transmitter of other optical fiber repeater, and each signal of telecommunication input/output terminal of optical transmission receiver and optical transmission transmitter is respectively applied for the reception and the transmission of CF signal and digital signal.
Dispose each functional module, components and parts, join dependency device blocks and write the working software program and running parameter is set according to above-mentioned explanation, can finish enforcement of the present utility model for microprocessor.
The utility model can also be in the back level loop of the low-converter able to programme of high-stability common-frequency optical fiber repeater the intermediate-freuqncy signal amplifier with automatic gain control function to be set, and the automatic gaining controling signal output of this intermediate-freuqncy signal amplifier is connected with a mould of microprocessor/number conversion working signal input; Can improve antijamming capability so that the utility model improves the selective power to communications band like this.
The clock source that upconverter able to programme in the transmission control unit (TCU) of high-stability common-frequency optical fiber of the present utility model repeater and the local vibration source of low-converter able to programme employing satellite time dissemination system provide is as the reference oscillation source, the clock source that provides as satellite fixes such as GPS, the Big Dipper, Galileo and time dissemination system, high stability and high-precision reference oscillation source can be obtained like this, the utility model can be implemented easily.
The upconverter able to programme in the transmission control unit (TCU) of high-stability common-frequency optical fiber of the present utility model repeater and the local vibration source of low-converter able to programme adopt constant-temperature crystal oscillator as the reference oscillation source, high stability and high-precision reference oscillation source can be obtained so easily, the utility model can be convenient to implement.
High-stability common-frequency optical fiber of the present utility model repeater by transmission control unit (TCU) in upconverter able to programme and low-converter able to programme adopt programmable phase-locked loop circuitry, filter, voltage controlled oscillator and frequency mixer to form, can implement the utility model easily like this.
High-stability common-frequency optical fiber of the present utility model repeater can also be to adopt a plurality of composition modes with the radio receiving-transmitting unit of different operating frequency and standard, a plurality of optical transmission transceiver, a plurality of transmission control unit (TCU)s, can carry out relay transmission to the wireless communication system of a plurality of different frequent points like this, also can improve range of application of the present utility model so that optical fiber repeater is realized connecting optical fiber repeater on a plurality of different directions by fibre circuit.
High-stability common-frequency optical fiber of the present utility model repeater can also be to select the wireless receiver module that receives the output of carrier frequency strength signal for use, like this can be so that enforcement of the present utility model is more simple.
A kind of high-stability common-frequency optical fiber repeater that is constituted by power supply, antenna-feedback system, wireless receiver, transmitting set, optical transmission receiver, optical transmission transmitter, upconverter able to programme, low-converter able to programme, transmission power splitter, electronic switch, microprocessor module and other and microprocessor work software of the utility model introduction, can realize that a plurality of optical fiber repeater field intensity coverings are interweaved, have and cover reliably, co-channel interference is little, do not have to feedback the characteristics of self-excitation, be applicable to the characteristics of radio communication relay transmission.
Claims (6)
1. one kind by power supply, antenna-feedback system, wireless receiver, transmitting set, the optical transmission receiver, the high-stability common-frequency optical fiber repeater that optical transmission transmitter and microprocessor etc. constitute, it is characterized in that having a transmission control unit (TCU), a low-converter able to programme is arranged in this transmission control unit (TCU), an electronic switch, one sends power splitter, a upconverter able to programme, the CF signal output of wireless receiver is connected with the CF signal input of low-converter able to programme, an electrical signal of the intermediate-freuqncy signal output of low-converter able to programme and optical transmission receiver is connected with two signal input switch contacts of electronic switch respectively, the signal output switch contact of electronic switch is connected with the CF signal input that sends power splitter, two CF signal outputs that send power splitter are connected with the electric signal input end of optical transmission transmitter and the signal input end of intermediate frequency of upconverter able to programme respectively, the CF signal output of upconverter able to programme is connected with the CF signal input of transmitting set, the CF signal amplifier gain control signal output ends of wireless receiver is connected the programming input of low-converter able to programme with a mould of microprocessor/number conversion working signal input, the programming input of upconverter able to programme, electronic switch operating state control end, an electric signal input end of optical transmission receiver and an electrical signal of optical transmission receiver are connected with the working signal input/output terminal of microprocessor respectively.
2. high-stability common-frequency optical fiber as claimed in claim 1 repeater, it is characterized in that in the back level loop of the low-converter able to programme of high-stability common-frequency optical fiber repeater, the intermediate-freuqncy signal amplifier with automatic gain control function being set, and the automatic gaining controling signal output of this intermediate-freuqncy signal amplifier is connected with a mould of microprocessor/number conversion working signal input.
3. high-stability common-frequency optical fiber as claimed in claim 1 or 2 repeater, the local vibration source that it is characterized in that upconverter able to programme in the transmission control unit (TCU) of high-stability common-frequency optical fiber repeater and low-converter able to programme adopt clock source that the satellite time dissemination system provides as the reference oscillation source.
4. high-stability common-frequency optical fiber as claimed in claim 1 or 2 repeater is characterized in that the upconverter able to programme in the transmission control unit (TCU) of high-stability common-frequency optical fiber repeater and the local vibration source of low-converter able to programme adopt constant-temperature crystal oscillator as the reference oscillation source.
5. high-stability common-frequency optical fiber as claimed in claim 1 or 2 repeater is characterized in that upconverter able to programme and the low-converter able to programme in the transmission control unit (TCU) of high-stability common-frequency optical fiber repeater adopts programmable phase-locked loop circuitry, filter, voltage controlled oscillator and frequency mixer to form.
6. high-stability common-frequency optical fiber as claimed in claim 1 or 2 repeater is characterized in that having a plurality of the have radio receiving-transmitting unit of different operating frequency and standard, a plurality of optical transmission transceiver, a plurality of transmission control unit (TCU)s in the high-stability common-frequency optical fiber repeater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201691020U CN201750418U (en) | 2009-08-17 | 2009-08-17 | High-stability common-frequency fiber optic repeater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201691020U CN201750418U (en) | 2009-08-17 | 2009-08-17 | High-stability common-frequency fiber optic repeater |
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| Publication Number | Publication Date |
|---|---|
| CN201750418U true CN201750418U (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201691020U Expired - Fee Related CN201750418U (en) | 2009-08-17 | 2009-08-17 | High-stability common-frequency fiber optic repeater |
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| CN (1) | CN201750418U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106792865A (en) * | 2017-02-27 | 2017-05-31 | 广东轻工职业技术学院 | A kind of wake-up formula direct discharging station and its control method |
| CN109510666A (en) * | 2016-09-06 | 2019-03-22 | 钱秀英 | A kind of common frequency optical fiber repeater working method with reference oscillation source |
-
2009
- 2009-08-17 CN CN2009201691020U patent/CN201750418U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510666A (en) * | 2016-09-06 | 2019-03-22 | 钱秀英 | A kind of common frequency optical fiber repeater working method with reference oscillation source |
| CN106792865A (en) * | 2017-02-27 | 2017-05-31 | 广东轻工职业技术学院 | A kind of wake-up formula direct discharging station and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Geng Zhi Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20130817 |