CN111277331A - Optical cable signal transmission system - Google Patents
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- CN111277331A CN111277331A CN202010132462.4A CN202010132462A CN111277331A CN 111277331 A CN111277331 A CN 111277331A CN 202010132462 A CN202010132462 A CN 202010132462A CN 111277331 A CN111277331 A CN 111277331A
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Abstract
The invention discloses an optical cable signal transmission system, which comprises a waveform detection module, an amplitude limiting pulse width module and an amplitude limiting emission module, wherein the waveform detection module adopts a wave detector J1 with the model number of AD 8313 to collect signal waveforms when the emitting end of an optical cable works, the amplitude limiting pulse width module receives signals output by the waveform detection module in two paths, one path of the signals uses a peak screening circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3 to screen out peak signals, the other path of the signals uses a limiting circuit consisting of a diode D5, a diode D8 and an operational amplifier AR4 to deepen the amplitude limiting depth of signal pulse width, the two paths of the signals are input into the operational amplifier AR3, the operational amplifier AR5 and a capacitor C3 to form a pulse width enlarging circuit together, and finally the amplitude limiting emission module uses a diode D9 and a diode D10 to form a circuit to limit the signals and sends the signals to an optical cable signal, converted to an error reference signal for the cable signal controller.
Description
Technical Field
The invention relates to the technical field of signal transmission, in particular to an optical cable signal transmission system.
Background
At present, an optical cable signal transmission system replaces carrier transmission step by step in a power grid, a new problem is also generated in photoelectric signal transmission, although transmission efficiency is high, interference resistance is high, distortion is easy to occur at the same time, signal pulse width is reduced, amplitude is overlarge, and then data are lost by signals received by an optical cable signal controller, and stability of the optical cable signal transmission system is reduced.
Disclosure of Invention
In view of the above situation, an object of the present invention is to provide an optical cable signal transmission system, which can calibrate the signal waveform of the optical cable emitting end during operation and convert the signal waveform into an error reference signal of an optical cable signal controller.
The technical scheme includes that the optical cable signal transmission system comprises a waveform detection module, an amplitude limiting pulse width module and an amplitude limiting emission module, wherein the waveform detection module collects signal waveforms of an optical cable emitting end in work by using a wave detector J1 with the model number of AD 8313, the amplitude limiting pulse width module receives output signals of the waveform detection module in two paths, one path of the signals uses an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3 to form a peak value screening circuit to screen out peak value signals, the other path of the signals uses a diode D5, a diode D8 and an operational amplifier AR4 to form an amplitude limiting circuit to deepen the amplitude limiting depth of the signal pulse width, the two paths of the signals are input into the operational amplifier AR3, the operational amplifier AR5 and a capacitor C3 to form a pulse width amplification circuit, the amplitude difference of the two paths of the signals is further detected by using a triode Q1 and a triode Q2, the, and finally, the amplitude limiting and transmitting module forms an amplitude limiting circuit by using a diode D9 and a diode D10 to limit the amplitude of the signal, and the signal is transmitted into the optical cable signal controller through a signal transmitter E1.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. the peak value screening circuit consisting of the operational amplifier AR1, the operational amplifier AR2, the diode D2 and the diode D3 is used for screening peak value signals and filtering low level signals in the signals, the amplitude limiting circuit consisting of the two paths of the operational amplifier AR 5-the diode D8 and the operational amplifier AR4 is used for deepening the amplitude limiting depth of the pulse width of the signals, the duty ratio of signal waveforms can be improved by deepening the amplitude limiting depth of the signals, namely, distortion in the signal transmission process is prevented, meanwhile, the two paths of signals are input into the pulse width expanding circuit consisting of the operational amplifier AR3, the operational amplifier AR5 and the capacitor C3 together, the signals are divided into two paths, distortion of the signals in adjustment can be prevented, and the reliability of;
2. a pulse width amplifying circuit is formed by the operational amplifier AR3, the operational amplifier AR5 and the diode D4, sawtooth wave voltages are formed at two ends of a capacitor C3 by the operational amplifier AR5 and the diode D4, the pulse width of an output signal is amplified, the amplitude difference of two paths of signals is further detected by the triode Q1 and the triode Q2, the signal is fed back into the pulse width amplifying circuit, the phase of the output signal of the pulse width amplifying circuit is adjusted, the accuracy of an error reference signal of the optical cable signal controller is guaranteed, finally, the amplitude limiting circuit is formed by the diode D9 and the diode D10 to limit the amplitude of the signal, the signal is sent into the optical cable signal controller through the signal transmitter E1, and the reference signal is used for correcting the received signal of the optical cable signal controller in time.
Drawings
Fig. 1 is a block diagram of a clipping pulse width of an optical cable signal transmission system according to the present invention.
Fig. 2 is a block diagram of a waveform detection module of an optical cable signal transmission system according to the present invention.
Fig. 3 is a diagram of a limiting transmission module of an optical cable signal transmission system according to the present invention.
Detailed Description
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1 to 3. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
The embodiment one, an optical cable signal transmission system, including a waveform detection module, an amplitude limiting pulse width module and an amplitude limiting emission module, where the waveform detection module uses a detector J1 with a model number of AD 8313 to collect a signal waveform at an optical cable emitting end during operation, the amplitude limiting pulse width module receives an output signal of the waveform detection module in two paths, one path uses an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3 to form a peak value screening circuit to screen out a peak value signal, the other path uses a diode D5-a diode D8 and an operational amplifier AR4 to form an amplitude limiting circuit to deepen a signal pulse width amplitude limiting depth, the two paths of signals are input into the operational amplifier AR3, the operational amplifier AR5 and a capacitor C3 to form a pulse width amplifying circuit, and further uses a triode Q1 and a triode Q2 to detect an amplitude difference of the two paths of signals, feeds back the signals into the, finally, the amplitude limiting and transmitting module forms an amplitude limiting circuit by using a diode D9 and a diode D10 to limit the amplitude of the signal, and the signal is transmitted into the optical cable signal controller through a signal transmitter E1;
the amplitude limiting pulse width module receives signals output by the waveform detection module in two paths, one path of the amplitude limiting pulse width module utilizes a peak value screening circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3 to screen peak value signals and filter low level signals in the signals, the other path of the amplitude limiting pulse width module utilizes an amplitude limiting circuit consisting of a diode D5-a diode D8 and an operational amplifier AR4 to deepen the amplitude limiting depth of signal pulse width, the duty ratio of signal waveform can be improved by deepening the amplitude limiting depth of the signal, namely, distortion in the signal transmission process is prevented, meanwhile, the two paths of signals are input into a pulse width amplifying circuit consisting of the operational amplifier AR3, the operational amplifier AR5 and a capacitor C3 together, a pulse width amplifying circuit consisting of an operational amplifier AR3, an operational amplifier AR5 and a diode D4 is utilized to form sawtooth wave voltages at two ends of C3 at two ends of the capacitor, and the sawtooth, when the voltage of two ends of a capacitor C3 is higher than that of the in-phase input end of an operational amplifier AR3, the operational amplifier AR3 outputs low potential which is lower than that of the in-phase input end of the operational amplifier AR3 and outputs high potential which is equivalent to cutting off the upper half part of saw teeth, so that the higher the voltage of the in-phase input end of the operational amplifier AR3 is, the less the saw teeth are cut off, the wider the output pulse width is, the amplitude difference of two paths of signals is further detected by using a triode Q1 and a triode Q2, a signal is fed back into a pulse width expansion circuit, the phase of the output signal of the pulse width expansion circuit is adjusted, and the accuracy of an error reference signal of an optical cable signal controller is ensured;
the amplitude-limiting pulse width module has a specific structure that an inverting input end of an operational amplifier AR1 is connected with an anode of a diode D2 and one end of a resistor R4, a non-inverting input end of the operational amplifier AR1 is connected with an anode of a diode D6 and a cathode of a diode D5, an anode of a diode D5 is connected with a cathode of a diode D6, one end of a resistor R6 and a non-inverting input end of an operational amplifier AR4, an inverting input end of the operational amplifier AR4 is connected with one end of a resistor R7, the other end of the resistor R7 is grounded, an output end of the operational amplifier AR4 is connected with the other end of the resistor R6 and the cathode of the diode D7 and the anode of the diode D7, an anode of the diode D7, a base of a triode Q7 and an output end of the operational amplifier AR 7, an inverting input end of the operational amplifier AR 7 and an inverting input end of the triode R7, and an output end of the operational amplifier D7, the negative electrode of the diode D3 is connected with one end of the resistor R5 and the capacitor C2 and the non-inverting input end of the operational amplifier AR2, the other ends of the resistor R5 and the capacitor C2 are grounded, the inverting input end of the operational amplifier AR3 is connected with one end of the resistor R9 and the capacitor C3, the other end of the capacitor C3 is grounded, the other end of the resistor R9 is connected with one end of the resistor R10 and the non-inverting input end of the operational amplifier AR5, the inverting input end of the operational amplifier AR5 is connected with the resistor R12, one end of a resistor R13 is connected with a power supply +5V, the other end of the resistor R12 is grounded, the other end of a resistor R13 is connected with the output end of the operational amplifier AR5, the negative electrode of a diode D4, the emitter of a triode Q2 and one end of a resistor R8, the collector of a triode Q2 is connected with the base of a triode Q1, the collector of the triode Q1 is connected with the other end of a resistor R8, the positive electrode of a diode D4 is connected with the other end of a resistor R10 and one end of a resistor R11, the other end of a resistor R11 is connected with the power supply +5V, and the output end of the operational amplifier AR3 is.
In a second embodiment, on the basis of the first embodiment, the amplitude-limiting transmitting module uses a limiting circuit formed by a diode D9 and a diode D10 to limit the amplitude of a signal, and the signal is transmitted into the optical cable signal controller through a signal transmitter E1 and is an error reference signal of the optical cable signal controller, the cathode of the diode D9 is connected to the anode of the diode D10 and the other end of the resistor R14, the anode of the diode D9 is connected to the cathode of the diode D10, one end of the resistor R15 and the cathode of the stabilivolt D11, the anode of the stabilivolt D11 is grounded, and the other end of the resistor R15 is connected to the signal transmitter E1;
the waveform detection module selects a wave detector J1 with the model number AD 8313 to collect signal waveforms during the working of an optical cable emitting end, a power supply end of the wave detector J1 is connected with +5V, a grounding end of the wave detector J1 is grounded, an output end of the wave detector J1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with a negative electrode of a voltage regulator tube D1 and one end of a resistor R2, a positive electrode of a voltage regulator tube D1 is grounded, the other end of the resistor R2 is connected with one end of a resistor R3 and one end of a capacitor C1, the other end of a capacitor C1 is grounded, and the other end of the resistor R3.
When the invention is used in particular, the optical cable signal transmission system comprises a waveform detection module, an amplitude limiting pulse width module and an amplitude limiting emission module, wherein the waveform detection module adopts a wave detector J1 with the model number of AD 8313 to collect the signal waveform of the optical cable emitting end during working, the amplitude limiting pulse width module receives the output signal of the waveform detection module in two paths, one path of the signal uses a peak value screening circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3 to screen out a peak value signal and filter out a low level signal in the signal, the other path of the signal uses a limiting circuit consisting of a diode D5, a diode D8 and an operational amplifier AR4 to deepen the amplitude limiting depth of the signal pulse width, the duty ratio of the signal waveform can be improved by deepening the amplitude limiting depth of the signal, namely, the distortion in the signal transmission process is prevented, meanwhile, the two paths of the signal are input into, a pulse width amplifying circuit is formed by an operational amplifier AR3, an operational amplifier AR5 and a diode D4, a sawtooth wave voltage is formed at two ends of a capacitor C3 by the operational amplifier AR5 and the diode D4, the sawtooth wave voltage is directly applied to an inverting input end of an operational amplifier AR3 and is compared with the voltage of a non-inverting input end of the operational amplifier AR3, when the voltage of two ends of the capacitor C3 is higher than that of the non-inverting input end of the operational amplifier AR3, the operational amplifier AR3 outputs a low potential which is lower than that of the non-inverting input end of the operational amplifier AR3 and outputs a high potential which is equivalent to cutting off the upper half part of a sawtooth, so that the higher the voltage of the non-inverting input end of the operational amplifier AR3 is, the smaller the sawtooth is cut off, the output pulse width is wider, the amplitude difference of two paths of signals is further detected by a triode Q1 and a triode Q2, a signal is fed back into the pulse width amplifying circuit to adjust the, and finally, the amplitude limiting and transmitting module forms an amplitude limiting circuit by using a diode D9 and a diode D10 to limit the amplitude of the signal, and the signal is transmitted into the optical cable signal controller through a signal transmitter E1.
While the invention has been described in further detail with reference to specific embodiments thereof, it is not intended that the invention be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (3)
1. An optical cable signal transmission system comprises a waveform detection module, an amplitude limiting pulse width module and an amplitude limiting emission module, and is characterized in that the waveform detection module collects signal waveforms when an optical cable emitting end works by using a wave detector J1 with the model number of AD 8313, the amplitude limiting pulse width module receives output signals of the waveform detection module in two paths, one path of the signals uses a peak screening circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3 to screen out peak signals, the other path of the signals uses a limiting circuit consisting of a diode D5, a diode D8 and an operational amplifier AR4 to deepen the amplitude limiting depth of signal pulse width, the two paths of the signals are input into the operational amplifier AR3, the operational amplifier AR5 and a capacitor C3 to form a pulse width amplification circuit, the amplitude difference of the two paths of the signals is further detected by using a triode Q1 and a triode Q2, the signals are fed, finally, the amplitude limiting and transmitting module forms an amplitude limiting circuit by using a diode D9 and a diode D10 to limit the amplitude of the signal, and the signal is transmitted into the optical cable signal controller through a signal transmitter E1;
the amplitude-limiting pulse width module comprises an operational amplifier AR1, wherein the inverting input end of the operational amplifier AR1 is connected with the anode of a diode D2 and one end of a resistor R4, the non-inverting input end of the operational amplifier AR1 is connected with the anode of a diode D6 and the cathode of a diode D5, the anode of a diode D5 is connected with the cathode of a diode D6, one end of a resistor R6 and the non-inverting input end of an operational amplifier AR4, the inverting input end of the operational amplifier AR4 is connected with one end of a resistor R7, the other end of the resistor R7 is connected with the cathode of the diode D7 and the anode of the operational amplifier AR4, the inverting input end of the operational amplifier AR 7 is connected with the ground, the output end of the operational amplifier AR 7 is connected with the cathode of the diode D7, the base of a triode Q7 and the output end of the operational amplifier AR 7, the inverting input end of the operational amplifier AR 7 and the inverting input end of the triode 7, and the emitter 7 of the operational amplifier AR, the negative electrode of the diode D3 is connected with one end of the resistor R5 and the capacitor C2 and the non-inverting input end of the operational amplifier AR2, the other ends of the resistor R5 and the capacitor C2 are grounded, the inverting input end of the operational amplifier AR3 is connected with one end of the resistor R9 and the capacitor C3, the other end of the capacitor C3 is grounded, the other end of the resistor R9 is connected with one end of the resistor R10 and the non-inverting input end of the operational amplifier AR5, the inverting input end of the operational amplifier AR5 is connected with the resistor R12, one end of a resistor R13 is connected with a power supply +5V, the other end of the resistor R12 is grounded, the other end of a resistor R13 is connected with the output end of the operational amplifier AR5, the negative electrode of a diode D4, the emitter of a triode Q2 and one end of a resistor R8, the collector of a triode Q2 is connected with the base of a triode Q1, the collector of the triode Q1 is connected with the other end of a resistor R8, the positive electrode of a diode D4 is connected with the other end of a resistor R10 and one end of a resistor R11, the other end of a resistor R11 is connected with the power supply +5V, and the output end of the operational amplifier AR3 is.
2. An optical cable signal transmission system as claimed in claim 1, wherein the amplitude-limiting transmitting module includes a diode D9, a cathode of the diode D9 is connected to an anode of the diode D10 and the other end of the resistor R14, an anode of the diode D9 is connected to a cathode of the diode D10, one end of the resistor R15 and a cathode of the voltage regulator D11, an anode of the voltage regulator D11 is grounded, and the other end of the resistor R15 is connected to the signal transmitter E1.
3. An optical cable signal transmission system as claimed in claim 2, wherein the waveform detection module includes a detector J1 with model number AD 8313, a power supply terminal of the detector J1 is connected to +5V, a ground terminal of the detector J1 is grounded, an output terminal of the detector J1 is connected to one end of a resistor R1, the other end of the resistor R1 is connected to a negative electrode of a voltage regulator D1 and one end of a resistor R2, an anode of the voltage regulator D1 is grounded, the other end of the resistor R2 is connected to one end of a resistor R3 and one end of a capacitor C1, the other end of the capacitor C1 is grounded, and the other end of the resistor R3 is connected to a non-inverting input terminal of an amplifier AR 1.
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| CN202010132462.4A CN111277331B (en) | 2020-02-29 | 2020-02-29 | Optical cable signal transmission system |
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