CN102957414A - Enhanced simulation signal transmission method and circuit - Google Patents
Enhanced simulation signal transmission method and circuit Download PDFInfo
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- CN102957414A CN102957414A CN201210470030XA CN201210470030A CN102957414A CN 102957414 A CN102957414 A CN 102957414A CN 201210470030X A CN201210470030X A CN 201210470030XA CN 201210470030 A CN201210470030 A CN 201210470030A CN 102957414 A CN102957414 A CN 102957414A
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Abstract
The invention relates to circuit and method for enhancing simulation signals, wherein the method comprises the following steps: 1) after conducting difference conversion to single-end signals, carrying out amplification processing to generate high-level and low-level difference signals; 2) conducting impedance match to the high-level and low-level difference signals, and outputting high-level and low-level difference signals with high signal-to-noise ratio; 3) outputting the high-level and low-level difference signals with high signal-to-noise ratio to a signal receiving end; and 4) receiving and conducting restoration processing to the high-level and low-level difference signals with high signal-to-noise ratio, received by the signal receiving end. According to the method and the circuit, the technical problems that the existing simulation signal is weak in anti-interference capability and easily influenced by outside environment can be solved, and by adjusting the gain of the simulation signal at a signal source end and a signal target end, the anti-interference property of the simulation signal under complicated electronic environment can be enhanced, the transmission performance of the signal can be improved, and the usage environments of the simulation signal can be broadened.
Description
Technical field
The invention belongs to the embedded computer field, be specifically related to a kind of circuit and method of enhancement mode analog signal.
Background technology
Analog signal consists of characteristic according to signal, can be divided into vector signal, grating signal, the composite grating signal, the various ways such as VGA or XGA signal, which kind of signal classification no matter, its signal consists of all large bandwidth, low level analog signal, vector, grating signal is comprised of analog signal fully, although the XGA signal has the synchronizing signal of analog signal and digital form, but its main demonstration information signal is comprised of analog signal, the characteristics of signals general character part of above signal type is all to have the simulation low level signal, effective analogue signal amplitude according to its output of standard is 0.054V～0.714V, the transmission range of signal also has very big-difference in various environments for use, especially low level under the sophisticated electronic environment, small-signal is subject to the impact of extraneous various electromagnetic environments, can cause the distortion of video information display effect, fuzzy, be difficult to the various unfavorable factors such as identification, therefore for analog signal unfavorable factor in actual applications, a kind of enhancement type analog signal transmission technology is proposed, improve the transmission characteristic of analog signal in various applied environments, promote the Anti-jamming of signal ability.
Summary of the invention
For a little less than solving existing analog signal antijamming capability, be subject to the technical problem of external environment impact, the invention provides a kind of transmission circuit and method of enhancement type analog signal, by at signal source, signal destination the gain of analog signal being adjusted, the anti-interference of enhancement mode analog signal under the sophisticated electronic environment, improve the transmission performance of signal, widen the environment for use of analog signal.
Technical solution of the present invention:
The transmission method of enhancement type analog signal, its special character is: may further comprise the steps:
1] single-ended signal is carried out differential conversion after, amplify processing, produce high and low level difference sub-signal;
2] high and low level difference sub-signal is carried out impedance matching, the high and low level difference sub-signal of output high s/n ratio;
3] the high and low level difference sub-signal with high s/n ratio exports signal receiving end to;
4] signal receiving end reduces processing to the high and low level difference sub-signal of the high s/n ratio that receives, and concrete steps are as follows:
4.1] at signal receiving end the high and low level difference sub-signal of high s/n ratio is carried out impedance matching;
4.2] the high and low level difference sub-signal that will carry out after the impedance matching is converted to single-ended signal, and carries out signal proportion and regulate recovering signal in transfer process.
Comprise the transmission Circuit tuning that is arranged on the signal source and the reception Circuit tuning that is arranged on signal receiving end, described transmission Circuit tuning is connected with the reception Circuit tuning by signal transmission line,
Described transmission Circuit tuning comprises resistance R 1, resistance R 2, resistance R 3, resistance R 4, build-out resistor R6, build-out resistor R8, amplifier A1 and amplifier A2, single-ended signal is input to the anode of amplifier A1 and the negative terminal of amplifier A2 by resistance R 1 and resistance R 4, the negative terminal of described amplifier A1 is by resistance R 2 ground connection, the anode of described amplifier A2 is by resistance R 3 ground connection, the output of described amplifier A1 is exported the high level differential signal to signal transmission line by build-out resistor R6, to signal transmission line, described amplifier A1 is identical with amplifier A2 by build-out resistor R8 output low level differential signal for the output of described amplifier A2;
Described reception Circuit tuning comprises resistance R 9, resistance R 10, resistance R 11, resistance R 14 and amplifier A3, the high level differential signal is connected to the anode of amplifier A3 by resistance R 10, low level differential signal is connected to the negative terminal of amplifier A3 by resistance R 11, resistance R 9 two ends are in parallel with signal transmission line, and the output of described amplifier A3 is by resistance R 14 output single-ended signals.
Above-mentioned amplifier A3 is identical with amplifier A2 with amplifier A1.
The present invention has advantages of:
1, be widely used, reliability is high, implement easily that analog signal sends, receiving circuit, by in the gain adjustment to analog signal of source, destination, the anti-interference of enhancement mode analog signal under the sophisticated electronic environment improves the transmission performance of signal, widens the environment for use of analog signal.
2, the present invention adopts first single-ended signal is converted to differential signal, improves the Anti-jamming of signal ability, is carrying out the relevant treatment transmission afterwards.
Description of drawings
Fig. 1 is that signal of the present invention is adjusted schematic diagram.
Embodiment
Basic principle of the present invention:
In the transmission link of signal, the signal transmission can be divided into signal source, signal transmission path, three nodes of signal receiving end, for characteristics of signals, the request signal transmission of unlike signal Nodes, carry out respectively signal adjustment and processing.The present invention carries out the signal adjustment from signal source, signal receiving end, output gain by adjusting the signal source, strengthen the interference free performance of small-signal in transmission course in the mode of signal receiving end recovering signal, adapt to the request signal transmission under the various environment.
Concrete processing mode is as follows:
1] single-ended signal is carried out differential conversion after, amplify processing, produce high and low level difference sub-signal;
2] high and low level difference sub-signal is carried out impedance matching, the high and low level difference sub-signal of output high s/n ratio;
3] the high and low level difference sub-signal with high s/n ratio exports signal receiving end to;
4] signal receiving end reduces processing to the high and low level difference sub-signal of the high s/n ratio that receives, and concrete steps are as follows:
4.1] at signal receiving end the high and low level difference sub-signal of high s/n ratio is carried out impedance matching;
4.2] the high and low level difference sub-signal that will carry out after the impedance matching is converted to single-ended signal, thereby and carries out signal proportion and regulate recovering signal in transfer process.
Based on above-mentioned processing mode, the invention allows for a kind of enhancement type analog signal circuit as shown in Figure 1: adjust by signal form, signal gain to the signal source, the technology of signal reduction is strengthened the antijamming capability of signal itself at signal receiving end, to adapt to the small-signal transmission requirement under the various complex environments.Specifically comprise the transmission Circuit tuning that is arranged on the signal source and the reception Circuit tuning that is arranged on signal receiving end, send Circuit tuning and be connected with the reception Circuit tuning by signal transmission line,
Send Circuit tuning and comprise resistance R 1, resistance R 2, resistance R 3, resistance R 4, build-out resistor R6, build-out resistor R8, amplifier A1 and amplifier A2, single-ended signal is input to the anode of amplifier A1 and the negative terminal of amplifier A2 by resistance R 1 and resistance R 4, the negative terminal of amplifier A1 is by resistance R 2 ground connection, the anode of amplifier A2 is by resistance R 3 ground connection, the output of amplifier A1 is exported the high level differential signal to signal transmission line by build-out resistor R6, to signal transmission line, amplifier A1 is identical with amplifier A2 by build-out resistor R8 output low level differential signal for the output of amplifier A2;
Receive Circuit tuning and comprise resistance R 9, resistance R 10, resistance R 11, resistance R 14 and amplifier A3, the high level differential signal is connected to the anode of amplifier A3 by resistance R 10, low level differential signal is connected to the negative terminal of amplifier A3 by resistance R 11, resistance R 9 two ends are in parallel with signal transmission line, and the output of amplifier A3 is by resistance R 14 output single-ended signals.
The transmission Circuit tuning of signal source is to carry out the electrical characteristic conversion in the signal source, be the differential signal of high level, large bandwidth with the analog signal conversion that originally was single-ended low level, large bandwidth, by change-over circuit original signal is carried out differential conversion and gain transformations, increase output signal level to strengthen the antijamming capability of signal in transmission path.Signal conversion Circuit tuning principle is shown in Fig. 1 left-hand component, know-why is the signal that single-ended signal is converted to difference form by two amplifiers of same model, congenerous, in the conversion of signal electrical characteristic, can carry out the signal gain adjustment according to the path length of signal transmission, the otherness of applied environment, to strengthen the anti-interference of code book in transmission course.
Be the consistency of inhibit signal characteristic before and after conversion, carrying out to select suitable wide-band amplifier, the consistency of inhibit signal frequency characteristic when differential conversion and gain are adjusted.
Can carry out the signal transmission at the different application environment after the electric conversion of settling signal source signal, gain are adjusted, owing to having strengthened the signal antijamming capability, therefore can reduce the electric requirement of transmission path, can adapt to various complicated applications environment.
For adapting to the electrical characteristic requirement of receiving terminal, at signal receiving end signal to be adjusted, i.e. signal reduction returns to the electrical characteristic of signal source, and signal receives, recovers to see the right-hand component among Fig. 1.Know-why is to utilize the amplifier characteristic, receives the analog signal of difference form, is single-ended signal with the analog signal conversion of difference form, and the signal of adaptation signal receiving terminal is processed the signal level amplitude requirement.In the characteristics of signals transfer process, utilize amplifier gain to adjust function simultaneously, the electric amplitude of restoring signal keeps the single-ended signal of receiving terminal output and the consistency of source signal electrical characteristic.Can adopt simultaneously with the differential conversion circuit in the amplifier of same model, to keep the consistency of receiving end signal frequency characteristic.
By above in adjustment, the signal differential conversion that gains of signal source, treatment technology in the reduction of signal receiving end signal, can strengthen the Anti-jamming of signal ability, simultaneously can be according to the different application environment of signal, output characteristic to the signal source is adjusted, can adapt to all kinds of complicated applications environment, expand greatly the scope of application of analog signal.
The above enhancement mode video transmission technologies of introducing is that through the checking of application in practice, signals collecting, the transmission environment of various small-signals also can be promoted, be applied to this technology, is with a wide range of applications as an example of the analog signal of low level, large bandwidth example.
Under military or commercial environment, can design, configure the signal transmission, the receiving circuit that have accordingly than strong anti-interference, realize the functions such as video monitoring, information demonstration, signal processing, has good adaptability, can be applicable under the various complicated electric circumstances, this circuit is implemented facility simultaneously, and circuit arranges flexibly, extend to simultaneously under the signals collecting, transmission environment of all kinds of small-signals, be with a wide range of applications.
The method has been applied to the signal transmission of radar signal under the airborne circumstance, gondola signal and has shown, through various verification experimental verifications and practical flight, this technology is easy to implement, and the signal conversion is reliable, undistorted, effect is good.
Claims (3)
1. the transmission method of enhancement type analog signal is characterized in that: may further comprise the steps:
1] single-ended signal is carried out differential conversion after, amplify processing, produce high and low level difference sub-signal;
2] high and low level difference sub-signal is carried out impedance matching, the high and low level difference sub-signal of output high s/n ratio;
3] the high and low level difference sub-signal with high s/n ratio exports signal receiving end to;
4] signal receiving end reduces processing to the high and low level difference sub-signal of the high s/n ratio that receives, and concrete steps are as follows:
4.1] at signal receiving end the high and low level difference sub-signal of high s/n ratio is carried out impedance matching;
4.2] the high and low level difference sub-signal that will carry out after the impedance matching is converted to single-ended signal, and carries out signal proportion and regulate recovering signal in transfer process.
2. the transmission circuit of enhancement type analog signal is characterized in that: comprise the transmission Circuit tuning that is arranged on the signal source and the reception Circuit tuning that is arranged on signal receiving end, described transmission Circuit tuning by signal transmission line with receive Circuit tuning and be connected,
Described transmission Circuit tuning comprises resistance R 1, resistance R 2, resistance R 3, resistance R 4, build-out resistor R6, build-out resistor R8, amplifier A1 and amplifier A2, single-ended signal is input to the anode of amplifier A1 and the negative terminal of amplifier A2 by resistance R 1 and resistance R 4, the negative terminal of described amplifier A1 is by resistance R 2 ground connection, the anode of described amplifier A2 is by resistance R 3 ground connection, the output of described amplifier A1 is exported the high level differential signal to signal transmission line by build-out resistor R6, to signal transmission line, described amplifier A1 is identical with amplifier A2 by build-out resistor R8 output low level differential signal for the output of described amplifier A2;
Described reception Circuit tuning comprises resistance R 9, resistance R 10, resistance R 11, resistance R 14 and amplifier A3, the high level differential signal is connected to the anode of amplifier A3 by resistance R 10, low level differential signal is connected to the negative terminal of amplifier A3 by resistance R 11, resistance R 9 two ends are in parallel with signal transmission line, and the output of described amplifier A3 is by resistance R 14 output single-ended signals.
3. the transmission circuit of enhancement type analog signal according to claim 2, it is characterized in that: described amplifier A3 is identical with amplifier A2 with amplifier A1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210470030.XA CN102957414B (en) | 2012-11-19 | 2012-11-19 | Enhanced simulation signal transmission method and circuit |
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| CN201210470030.XA CN102957414B (en) | 2012-11-19 | 2012-11-19 | Enhanced simulation signal transmission method and circuit |
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| CN102957414B CN102957414B (en) | 2015-04-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI594571B (en) * | 2015-12-30 | 2017-08-01 | 財團法人工業技術研究院 | An output stage circuit |
| US9973180B2 (en) | 2015-12-30 | 2018-05-15 | Industrial Technology Research Institute | Output stage circuit |
| CN109587398A (en) * | 2018-12-13 | 2019-04-05 | 中国科学院西安光学精密机械研究所 | A kind of spaceborne short-wave infrared signal processing circuit and processing method |
| CN112256612A (en) * | 2020-10-27 | 2021-01-22 | 天津市英贝特航天科技有限公司 | RS-422 bus isolation transceiver capable of automatically adapting terminal resistance |
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| CN201374779Y (en) * | 2009-02-03 | 2009-12-30 | 厦门市振威安全技术发展有限公司 | Twisted pair video transmission system capable of automatically pre-amplifying and compensating |
| CN101795385A (en) * | 2009-02-03 | 2010-08-04 | 厦门Abb振威电器设备有限公司 | Automatic preamplification and precompensation twisted-pair video transmission method and system |
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| CN1476249A (en) * | 2002-08-13 | 2004-02-18 | 舒富喜 | Remote video frequency image monitoring system |
| CN2798463Y (en) * | 2005-03-05 | 2006-07-19 | 李基生 | Weighting anti-interference video retriever |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI594571B (en) * | 2015-12-30 | 2017-08-01 | 財團法人工業技術研究院 | An output stage circuit |
| US9973180B2 (en) | 2015-12-30 | 2018-05-15 | Industrial Technology Research Institute | Output stage circuit |
| CN109587398A (en) * | 2018-12-13 | 2019-04-05 | 中国科学院西安光学精密机械研究所 | A kind of spaceborne short-wave infrared signal processing circuit and processing method |
| CN109587398B (en) * | 2018-12-13 | 2023-12-08 | 中国科学院西安光学精密机械研究所 | Satellite-borne short-wave infrared signal processing circuit and processing method |
| CN112256612A (en) * | 2020-10-27 | 2021-01-22 | 天津市英贝特航天科技有限公司 | RS-422 bus isolation transceiver capable of automatically adapting terminal resistance |
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| CN102957414B (en) | 2015-04-15 |
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