CN108768328B - Low-frequency electronic communication system - Google Patents
Low-frequency electronic communication system Download PDFInfo
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- CN108768328B CN108768328B CN201810752256.6A CN201810752256A CN108768328B CN 108768328 B CN108768328 B CN 108768328B CN 201810752256 A CN201810752256 A CN 201810752256A CN 108768328 B CN108768328 B CN 108768328B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a low-frequency electronic communication system, which comprises: the voltage stabilizing filter circuit comprises a signal input circuit, an amplifying circuit, an operational amplifier, a switching circuit, a voltage comparator, a voltage dividing resistor, a feedback resistor and a voltage stabilizing output circuit, wherein when an input signal is a normal signal, the voltage comparator outputs a low level, and a signal processed by the voltage stabilizing filter circuit is amplified by the amplifying circuit and the operational amplifier respectively and then is output to the voltage stabilizing output circuit; when the input signal is an abnormal signal, the voltage comparator outputs a high level, the amplifying circuit does not pass through current, the switching circuit is conducted, and the signal processed by the voltage stabilizing filter circuit passes through the switching circuit and is amplified by the operational amplifier and then output to the voltage stabilizing output circuit. The low-frequency electronic communication system provided by the invention can automatically calibrate the input signals in the signal transmission channels in the system in real time, and improves the signal transmission rate on the basis of improving the stability of the signals.
Description
Technical Field
The present invention relates to the field of electronic communications technologies, and in particular, to a low frequency electronic communications system.
Background
Information technology is an important support for the economic development of the society today. The information industry, including the manufacture and sale of media used for information communication (e.g., communications, broadcast television, journal books, and information services), equipment and raw materials for information acquisition, transmission, and processing, has become or is becoming the mainstay industry in many countries or regions due to its new technology, high yield, wide range, and the like. The low-frequency electronic communication system is an important ring, and then the key of the low-frequency electronic communication system is to stably and effectively transmit signals, however, the low-frequency electronic communication needs to automatically calibrate the signals at the input end of the signal transmission channel of the control terminal of the low-frequency electronic communication system in real time, so that the stability of the signals is improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a low-frequency electronic communication system, which can automatically calibrate an input signal in a signal transmission channel in the low-frequency electronic communication system in real time, and improves the signal transmission rate on the basis of improving the stability of the signal.
The technical scheme for solving the problems is as follows: the invention provides a low-frequency electronic communication system, which comprises:
the signal input circuit comprises a signal input end and a voltage stabilizing filter circuit, wherein the signal input end is used for being connected with an input signal in a signal transmission channel in the low-frequency electronic communication system, and the signal input end is connected with the input end of the voltage stabilizing filter circuit;
the input end of the amplifying circuit is connected with the output end of the voltage stabilizing filter circuit;
the non-inverting input end of the operational amplifier is connected with the output end of the amplifying circuit;
the input end of the switching circuit is connected with the output end of the voltage stabilizing filter circuit, and the output end of the switching circuit is connected with the non-inverting input end of the operational amplifier;
the output end of the voltage comparator is connected with the control end of the switching circuit, is conducted through the high-level control switching circuit and is disconnected through the low-level control switching circuit; whether the voltage comparator outputs a high level or a low level is determined by the voltage magnitudes on the non-inverting input and the inverting input of the voltage comparator;
the divider resistor is connected between the output end of the amplifying circuit and the non-inverting input end of the voltage comparator;
the feedback resistor is connected between the inverting input end of the operational amplifier and the inverting input end of the voltage comparator;
the voltage stabilizing output circuit is connected with the output end of the operational amplifier;
when the input signal is a normal signal, the voltage comparator outputs a low level, and the signal processed by the voltage stabilizing filter circuit is amplified by the amplifying circuit and the operational amplifier respectively and then output to the voltage stabilizing output circuit; when the input signal is an abnormal signal, the voltage comparator outputs a high level, the amplifying circuit does not pass through current, the signal processed by the voltage stabilizing filter circuit passes through the switching circuit, and then the signal is amplified by the operational amplifier and then output to the voltage stabilizing output circuit.
In the low-frequency electronic communication system of the present invention, the voltage stabilizing filter circuit in the signal input circuit comprises a first inductor L1, a first capacitor C1 and a first voltage stabilizing tube D1, wherein one end of the first inductor L1 is connected with the negative electrode of the first voltage stabilizing tube D1 and the signal input end, the other end of the first inductor L1 is connected with one end of the first capacitor C1, and the positive electrode of the first voltage stabilizing tube D1 and the other end of the first capacitor C1 are grounded; the first voltage stabilizing tube D1 is used for stabilizing the input signal, and the first inductor L1 and the first capacitor C1 form an LC filter circuit for filtering the input signal.
Preferably, in the low frequency electronic communication system of the present invention, the amplifying circuit includes a second diode D2, a third diode D3, a first voltage dividing resistor R1, a second voltage dividing resistor R2, a fourth voltage dividing resistor R4, a first triode Q1 and a second triode Q2; the operational amplifier comprises a first operational amplifier AR1; the voltage comparator includes a second operational amplifier AR2; the feedback resistor comprises a fifth feedback resistor R5 and a sixth feedback resistor R6; the voltage dividing resistor comprises a third voltage dividing resistor R3; the switching circuit includes a fourth diode D4 and a third transistor Q3.
The anodes of the second diode D2, the third diode D3 and the fourth diode D4 are all connected with the output end of the signal input circuit;
the base of the first triode Q1 is connected with the cathode of a third diode D3, the anode of the third diode D3 is connected with the anode of a fourth diode D4 and the anode of a second diode D2, the cathode of the second diode D2 is connected with one end of a first voltage dividing resistor R1 and a power supply, the other end of the first voltage dividing resistor R1 is connected with one end of the second voltage dividing resistor R2 and the collector of the first triode Q1, the emitter of the first triode Q1 is connected with the base of the second triode Q2, the collector of the second triode Q2 is connected with the other end of the second voltage dividing resistor R2 and one end of a fourth voltage dividing resistor R4, the emitter of the second triode Q2 is connected with the non-inverting input end of the first operational amplifier AR1, one end of the third voltage dividing resistor R3 and the emitter of the third triode Q3, the inverting input end of the first operational amplifier AR1 is connected with one end of a fifth feedback resistor R5, the collector of the other end of the third triode Q3 is connected with the negative electrode of the fourth diode Q1, the base of the third triode Q3 is connected with the other end of the second operational amplifier AR2, and the other end of the third triode Q2 is connected with the other end of the third feedback resistor R6, and the other end of the third operational amplifier R2 is connected with the non-inverting input end of the third resistor R1.
One end of the third resistor R3 and the non-inverting input end of the first operational amplifier AR1 are connected to the output end of the amplifying circuit, the other end of the third resistor R3 is connected to the non-inverting input end of the voltage comparator, the output end of the voltage comparator is connected to the base electrode of the third triode Q3, one end of the fifth resistor R5 is connected to the inverting input end of the operational amplifier, one end of the sixth resistor R6 is connected to the inverting input end of the voltage comparator, and the collector electrode of the fourth diode Q4 and one end of the seventh resistor R7 are connected to the output end of the operational amplifier.
In the low-frequency electronic communication system of the present invention, the voltage stabilizing output circuit includes a seventh voltage dividing resistor R7, an eighth voltage dividing resistor R8, a fourth triode Q4, a fifth voltage stabilizing tube D5, and a signal output end, wherein a collector of the fourth triode Q4 is connected to the output end of the first operational amplifier AR1 and one end of the seventh voltage dividing resistor R7, a base of the fourth triode Q4 is connected to the other end of the seventh voltage dividing resistor R7 and a negative electrode of the fifth voltage stabilizing tube D5, an anode of the fifth voltage stabilizing tube D5 is grounded, an emitter of the fourth triode Q4 is connected to one end of the eighth voltage dividing resistor R8, and another end of the eighth voltage dividing resistor R8 is connected to the signal output end.
Compared with the prior art, the invention has the following beneficial effects:
when the input signal is a normal signal, the second operational amplifier AR2 outputs a low level, and the signal processed by the voltage stabilizing filter circuit is amplified by the first triode Q1, the second triode Q2 and the first operational amplifier AR1 respectively and then is output to the voltage stabilizing output circuit; when the input signal is an abnormal signal, the second operational amplifier AR2 outputs a high level, the third triode Q3 is conducted, no current passes through the amplifying circuit, the input signal is processed by the voltage stabilizing filter circuit and then passes through the third triode Q3, and the input signal is amplified by the first operational amplifier AR1 and then is output to the voltage stabilizing output circuit; therefore, the effect of adjusting the output signal of the first operational amplifier AR1 is achieved, the input signal received by the input end of the signal transmission channel in the low-frequency electronic communication system can be automatically calibrated in real time, and the signal transmission rate is improved on the basis of improving the stability of the signal.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a block diagram of a low frequency electronic communication system according to the present invention;
fig. 2 is a circuit diagram of a low frequency electronic communication system according to the present invention.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
The foregoing and other features, aspects and advantages of the present invention will become more apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying figures 1-2. The following embodiments are described in detail with reference to the drawings.
In a first embodiment, the low frequency electronic communication system 0 includes:
the signal input circuit 1 comprises a signal input end 11 and a voltage stabilizing filter circuit 12, wherein the signal input end 11 is used for being connected with an input signal in a signal transmission channel in a low-frequency electronic communication system, and the signal input end is connected with the input end of the voltage stabilizing filter circuit 12;
the input end of the amplifying circuit 2 is connected with the output end of the voltage stabilizing filter circuit 12;
the input end of the switching circuit 3 is connected with the output end of the voltage stabilizing filter circuit 12, and the output end of the switching circuit 3 is connected with the non-inverting input end of the operational amplifier 4;
the noninverting input end of the operational amplifier 4 is connected with the output end of the amplifying circuit 2;
the divider resistor 5 is connected between the output end of the amplifying circuit 2 and the non-inverting input end of the voltage comparator 6;
the output end of the voltage comparator 6 is connected with the control end of the switch circuit 3, and is connected with the switch circuit 3 through the output high level control, and disconnected through the output low level control; whether the voltage comparator 6 outputs a high level or a low level is determined by the magnitudes of the voltages on the non-inverting input and the inverting input of the voltage comparator;
a feedback resistor 7 connected between the inverting input terminal of the operational amplifier 4 and the inverting input terminal of the voltage comparator 6;
the voltage stabilizing output circuit 8 is connected with the output end of the operational amplifier 4;
when the input signal is a normal signal, the voltage comparator 6 outputs a low level, and the signal processed by the voltage stabilizing filter circuit 12 is amplified by the amplifying circuit 2 and the operational amplifier 4 respectively and then output to the voltage stabilizing output circuit 8; when the input signal is an abnormal signal, the voltage comparator 6 outputs a high level, the switch circuit 3 is turned on, no current passes through the amplifying circuit 2, and the signal processed by the voltage stabilizing filter circuit 12 passes through the switch circuit 3 and is amplified by the operational amplifier 4 and then outputted to the voltage stabilizing output circuit 8.
The voltage stabilizing filter circuit 12 in the signal input circuit 1 comprises a first inductor L1, a first capacitor C1 and a first voltage stabilizing tube D1, one end of the first inductor L1 is connected with the negative electrode of the first voltage stabilizing tube D1 and the signal input end, the other end of the first inductor L1 is connected with one end of the first capacitor C1, and the positive electrode of the first voltage stabilizing tube D1 and the other end of the first capacitor C1 are grounded; the first voltage stabilizing tube D1 is used for stabilizing the input signal, and the first inductor L1 and the first capacitor C1 form an LC filter circuit for filtering the input signal.
The amplifying circuit 2 comprises a second diode D2, a third diode D3, a first voltage dividing resistor R1, a second voltage dividing resistor R2, a fourth voltage dividing resistor R4, a first triode Q1 and a second triode Q2;
the operational amplifier 4 includes a first operational amplifier AR1; the voltage comparator 6 includes a second operational amplifier AR2; the feedback resistor 7 comprises a fifth feedback resistor R5 and a sixth feedback resistor R6; the voltage dividing resistor 5 comprises a third voltage dividing resistor R3;
the switch circuit 3 includes a fourth diode D4 and a third triode Q3;
the base electrode of the first triode Q1 is connected with the cathode of a third diode D3, the anode of the third diode D3 is connected with the anode of a fourth diode D4 and the anode of a second diode D2, the cathode of the second diode D2 is connected with one end of a first voltage dividing resistor R1 and a power supply, the other end of the first voltage dividing resistor R1 is connected with one end of the second voltage dividing resistor R2 and the collector electrode of the first triode Q1, the emitter electrode of the first triode Q1 is connected with the base electrode of the second triode Q2, the collector electrode of the second triode Q2 is connected with the other end of the second voltage dividing resistor R2 and one end of a fourth voltage dividing resistor R4, the emitter electrode of the second triode Q2 is connected with the non-inverting input end of a first operational amplifier AR1, one end of the third voltage dividing resistor R3 and the emitter of the third triode Q3, the inverting input end of the inverting input of the first operational amplifier AR1 is connected with one end of a fifth feedback resistor R5, the collector electrode of the third triode Q3 is connected with the cathode of the fourth diode Q1, the base electrode of the third triode Q3 is connected with the other end of the second voltage dividing resistor R2, the other end of the inverting input end of the third operational amplifier R2 is connected with the other end of the third feedback resistor R5, and the other end of the inverting input end of the third operational amplifier R2 is connected with the other end of the third resistor R2;
the anodes of the second diode D2, the third diode D3 and the fourth diode D4 are all connected with the output end of the signal input circuit;
one end of the third resistor R3 and the non-inverting input end of the first operational amplifier AR1 are connected to the output end of the amplifying circuit, the other end of the third resistor R3 is connected to the non-inverting input end of the voltage comparator, the output end of the voltage comparator is connected to the base electrode of the third triode Q3, one end of the fifth resistor R5 is connected to the inverting input end of the operational amplifier, one end of the sixth resistor R6 is connected to the inverting input end of the voltage comparator, and the collector electrode of the fourth diode Q4 and one end of the seventh resistor R7 are connected to the output end of the operational amplifier.
The voltage stabilizing output circuit 8 comprises a seventh voltage dividing resistor R7, an eighth voltage dividing resistor R8, a fourth triode Q4, a fifth voltage stabilizing tube D5 and a signal output end, wherein the collector of the fourth triode Q4 is connected with the output end of the first operational amplifier AR1 and one end of the seventh voltage dividing resistor R7, the base of the fourth triode Q4 is connected with the other end of the seventh voltage dividing resistor R7 and the negative electrode of the fifth voltage stabilizing tube D5, the positive electrode of the fifth voltage stabilizing tube D5 is grounded, the emitter of the fourth triode Q4 is connected with one end of the eighth voltage dividing resistor R8, and the other end of the eighth voltage dividing resistor R8 is connected with the signal output end;
while the invention has been described in connection with certain embodiments, it is not intended that the invention be limited thereto; for those skilled in the art to which the present invention pertains and the related art, on the premise of based on the technical scheme of the present invention, the expansion, the operation method and the data replacement should all fall within the protection scope of the present invention.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (2)
1. A low frequency electronic communication system, the low frequency electronic communication system comprising:
the signal input circuit comprises a signal input end and a voltage stabilizing filter circuit, wherein the signal input end is used for being connected with an input signal in a signal transmission channel in the low-frequency electronic communication system, and the signal input end is connected with the input end of the voltage stabilizing filter circuit; the voltage stabilizing filter circuit in the signal input circuit comprises a first inductor (L1), a first capacitor (C1) and a first voltage stabilizing tube (D1), one end of the first inductor (L1) is connected with the negative electrode of the first voltage stabilizing tube (D1) and the signal input end, the other end of the first inductor (L1) is connected with one end of the first capacitor (C1), and the positive electrode of the first voltage stabilizing tube (D1) and the other end of the first capacitor (C1) are grounded; the first voltage stabilizing tube (D1) is used for stabilizing the input signal, and the first inductor (L1) and the first capacitor (C1) form an LC filter circuit for filtering the input signal;
the input end of the amplifying circuit is connected with the output end of the voltage stabilizing filter circuit;
the non-inverting input end of the operational amplifier is connected with the output end of the amplifying circuit;
the input end of the switching circuit is connected with the output end of the voltage stabilizing filter circuit, and the output end of the switching circuit is connected with the non-inverting input end of the operational amplifier;
the output end of the voltage comparator is connected with the control end of the switching circuit, is conducted through the high-level control switching circuit and is disconnected through the low-level control switching circuit; whether the voltage comparator outputs a high level or a low level is determined by the voltage magnitudes on the non-inverting input and the inverting input of the voltage comparator;
the divider resistor is connected between the output end of the amplifying circuit and the non-inverting input end of the voltage comparator;
the feedback resistor is connected between the inverting input end of the operational amplifier and the inverting input end of the voltage comparator;
the voltage stabilizing output circuit is connected with the output end of the operational amplifier; the voltage stabilizing output circuit comprises a seventh voltage dividing resistor (R7), an eighth voltage dividing resistor (R8), a fourth triode (Q4), a fifth voltage stabilizing tube (D5) and a signal output end, wherein the collector of the fourth triode (Q4) is connected with the output end of the first operational amplifier (AR 1) and one end of the seventh voltage dividing resistor (R7), the base of the fourth triode (Q4) is connected with the other end of the seventh voltage dividing resistor (R7) and the negative electrode of the fifth voltage stabilizing tube (D5), the positive electrode of the fifth voltage stabilizing tube (D5) is grounded, the emitter of the fourth triode (Q4) is connected with one end of the eighth voltage dividing resistor (R8), and the other end of the eighth voltage dividing resistor (R8) is connected with the signal output end;
when the input signal is a normal signal, the voltage comparator outputs a low level, and the signal processed by the voltage stabilizing filter circuit is amplified by the amplifying circuit and the operational amplifier respectively and then output to the voltage stabilizing output circuit; when the input signal is an abnormal signal, the voltage comparator outputs a high level, the switching circuit is conducted, no current passes through the amplifying circuit, and the signal processed by the voltage stabilizing filter circuit passes through the switching circuit and is amplified by the operational amplifier and then output to the voltage stabilizing output circuit.
2. The low frequency electronic communication system according to claim 1, wherein the amplifying circuit comprises a second diode (D2), a third diode (D3), a first voltage dividing resistor (R1), a second voltage dividing resistor (R2), a fourth voltage dividing resistor (R4), a first triode (Q1) and a second triode (Q2); the operational amplifier comprises a first operational amplifier (AR 1); the voltage comparator comprises a second operational amplifier (AR 2); the feedback resistor comprises a fifth feedback resistor (R5) and a sixth feedback resistor (R6); the voltage dividing resistor comprises a third voltage dividing resistor (R3); the switching circuit comprises a fourth diode (D4) and a third triode (Q3);
the anodes of the second diode (D2), the third diode (D3) and the fourth diode (D4) are all connected with the output end of the signal input circuit;
the base electrode of the first triode (Q1) is connected with the cathode of a third diode (D3), the anode of the third diode (D3) is connected with the anode of a fourth diode (D4) and the anode of a second diode (D2), the cathode of the second diode (D2) is connected with one end of a first voltage dividing resistor (R1) and the emitter of the third diode (Q1), the other end of the first voltage dividing resistor (R1) is connected with one end of a second voltage dividing resistor (R2) and the collector of the first triode (Q1), the emitter of the first triode (Q1) is connected with the base electrode of a second triode (Q2), the collector of the second triode (Q2) is connected with the other end of the second voltage dividing resistor (R2) and one end of the fourth voltage dividing resistor (R4), the emitter of the second triode (Q2) is connected with the in-phase input end of the first operational amplifier (AR 1), one end of the third voltage dividing resistor (R3) and the emitter of the third triode (Q3), the other end of the first operational amplifier (AR 1) is connected with the base electrode of the third triode (R3) and the other end of the third triode (R2) is connected with the base electrode of the third triode (R2), the other end of the sixth feedback resistor (R6) is connected with one end of a fifth feedback resistor (R5), the other end of a fourth voltage dividing resistor (R4) and the output end of the first operational amplifier (AR 1), and the other end of the fifth feedback resistor (R5) is connected with the inverting input end of the first operational amplifier (AR 1);
one end of the third resistor (R3) and the non-inverting input end of the first operational amplifier (AR 1) are connected with the output end of the amplifying circuit, the other end of the third resistor (R3) is connected with the non-inverting input end of the voltage comparator, the output end of the voltage comparator is connected with the base electrode of the third triode (Q3), one end of the fifth resistor (R5) is connected with the inverting input end of the operational amplifier, one end of the sixth resistor (R6) is connected with the inverting input end of the voltage comparator, and the collector electrode of the fourth diode (Q4) and one end of the seventh resistor (R7) are connected with the output end of the operational amplifier.
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| CN109743057B (en) * | 2019-01-10 | 2020-04-03 | 郑州工程技术学院 | Thing networking data transmission correction equipment |
| CN110502054A (en) * | 2019-08-29 | 2019-11-26 | 乳源东阳光机械有限公司 | A kind of electroplating power supply circuit for realizing the output of free voltage waveform stabilization |
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