CN109361536A - A kind of Analysis of Network Information system - Google Patents
A kind of Analysis of Network Information system Download PDFInfo
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- CN109361536A CN109361536A CN201811159122.XA CN201811159122A CN109361536A CN 109361536 A CN109361536 A CN 109361536A CN 201811159122 A CN201811159122 A CN 201811159122A CN 109361536 A CN109361536 A CN 109361536A
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- 238000004458 analytical method Methods 0.000 title claims abstract description 13
- 239000004065 semiconductor Substances 0.000 claims abstract description 47
- 238000012546 transfer Methods 0.000 claims abstract description 16
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 8
- 230000003139 buffering effect Effects 0.000 claims abstract description 7
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 230000002159 abnormal effect Effects 0.000 claims abstract description 4
- 239000003381 stabilizer Substances 0.000 claims description 41
- 239000003990 capacitor Substances 0.000 claims description 17
- 230000002452 interceptive effect Effects 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003012 network analysis Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
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Abstract
The invention discloses a kind of Analysis of Network Information systems, the received network information transfer channel signal of filter circuit, it is filtered through LC, after bandpass filter avoids other frequency signals from interfering, in access switch circuit, through operational amplifier AR2, the processing of operational amplifier AR3 difference, normal difference signal driving triode Q1 conducting, filter circuit output signal is set to be connected to signal output port after the buffering isolation of operational amplifier AR4 voltage follower, abnormal difference signal controls metal-oxide-semiconductor Q1, the on and off of Q2, control the resistance value of resistance R13 and the resistance value of resistance R12 in voltage regulator circuit, to control the multiple that operational amplifier AR3 amplifies filter circuit output signal, with the size of this adjusting signal amplitude, voltage eliminates 0.5V fluctuation through triode Q10 pressure stabilizing after adjusting Stable 0V ~+5V standard signal is exported after voltage is transferred to terminal server through signal output port.The problem of signal in effective solution network information transfer channel cannot effectively be received because of decaying by terminal server.
Description
Technical field
The present invention relates to field of circuit technology, more particularly to a kind of Analysis of Network Information system.
Background technique
The prosperity of network system, many information all pass through network and are transmitted, and have brought very big convenience, with
People are more and more strong to the dependence of network (such as internet), carry out overall monitor analysis to the information of all transmission in network,
Seem in terms of excluding network contingency, improving network security, raising network performance and be even more important, currently, mainly using network point
Analysis system (such as section carrys out network analysis system) is analyzed, specifically by the network information transfer channel by real-time packet capturing
Signal is transferred to terminal server, is analyzed received signal by terminal server, however signal is believed through long-distance
There are transmission loss for road transmission, will cause signal decaying, prevent terminal server from effectively receiving in data transmission channel
Signal.
So the present invention provides the new scheme of one kind to solve the problems, such as this.
Summary of the invention
For above situation, for the defect for overcoming the prior art, purpose of the present invention is to provide a kind of network informations point
Analysis system, have be skillfully constructed, the characteristic of human oriented design, the signal decaying in effective solution network information transfer channel
The problem of cannot effectively being received by terminal server.
Its technical solution solved is, including filter circuit, switching circuit and voltage regulator circuit, which is characterized in that filter
The received network information transfer channel signal of wave circuit filters out external interference through LC, operational amplifier AR1 is core
Bandpass filter only allows the frequency signal of network information transfer channel signal to pass through, and blocks the letter other than the frequency range
Number, that is, anti-interference rear output is improved, later in access switch circuit, switching circuit is through operational amplifier AR2, operational amplifier
The processing of AR3 difference exports difference signal, and normal difference signal driving triode Q1 conducting, filter circuit output signal is through operation
Signal output port is connected to after the buffering isolation of amplifier AR4 voltage follower, abnormal difference signal control metal-oxide-semiconductor Q1, Q2's
On and off controls the resistance value of resistance R13 and the resistance value of resistance R12 in voltage regulator circuit, to control operational amplifier
The multiple that AR3 amplifies filter circuit output signal, with the size of this adjusting signal amplitude, voltage is through triode Q10 after adjusting
Signal output port is connected to after pressure stabilizing.
Due to the use of above technical scheme, the present invention has the following advantages that compared with prior art；
1, the received network information transfer channel signal of filter circuit avoids other frequencies from believing through LC filtering, bandpass filter
After number interference, in access switch circuit, switching circuit is normal poor through operational amplifier AR2, the processing of operational amplifier AR3 difference
Value signal driving triode Q1 conducting makes filter circuit output signal after the buffering isolation of operational amplifier AR4 voltage follower
It is connected to signal output port, the on and off of abnormal difference signal control metal-oxide-semiconductor Q1, Q2 control in voltage regulator circuit
The resistance value of resistance R13 and the resistance value of resistance R12, to control times that operational amplifier AR3 amplifies filter circuit output signal
Number, with the size of this adjusting signal amplitude, voltage is connected to signal output port after triode Q10 pressure stabilizing after adjusting, solves
The problem of signal decaying in network information transfer channel cannot effectively be received by terminal server.
2, voltage-stabiliser tube Z3, voltage-stabiliser tube Z2 and amplitude limiter circuit (diode D1, diode D2, resistance R14 are set in switching circuit
Composition), when operational amplifier AR2 output voltage being made to be higher than voltage-stabiliser tube Z3 pressure stabilizing value 0.7V, metal-oxide-semiconductor Q2 conducting, operational amplifier
When AR3 output voltage is lower than voltage-stabiliser tube Z2 pressure stabilizing value 0.3V, metal-oxide-semiconductor Q1 conducting, operational amplifier AR2 output voltage is lower than 0.7V
And operational amplifier AR3 output voltage be higher than 0.3V (normal difference signal) when, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2 are turned off, triode
Q3 conducting, improves the reliability of difference signal processing, the case where avoiding signal mistuning section and do not adjust.
Detailed description of the invention
Fig. 1 is a kind of circuit module figure of Analysis of Network Information system of the present invention.
Fig. 2 is a kind of circuit diagram of Analysis of Network Information system of the present invention.
Specific embodiment
For the present invention aforementioned and other technology contents, feature and effect, in following cooperation with reference to figures 1 through attached drawing 2
To in the detailed description of embodiment, can clearly present.The structure content being previously mentioned in following embodiment is with specification
Attached drawing is reference.
Each exemplary embodiment of the invention is described below with reference to accompanying drawings.
Embodiment one, a kind of Analysis of Network Information system, including filter circuit, switching circuit and voltage regulator circuit, filter
The received network information transfer channel signal of wave circuit, the LC filter circuit formed through inductance L1, capacitor C1 filter out the external world and make an uproar
After acoustic jamming, into the bandpass filter frequency-selecting of operational amplifier AR1, resistance R1-R3, capacitor C2, capacitor C3 composition, only allow
The frequency of level-one amplified signal passes through, and blocks the signal other than the frequency range, that is, defeated after avoiding other frequency signals from interfering
Out, later in access switch circuit the non-inverting input terminal of operational amplifier AR2 and operational amplifier AR3 inverting input terminal, with
The inverting input terminal voltage of operational amplifier AR2 (receives power supply+12V resistance R5 after resistance R4, R5, voltage-stabiliser tube Z1 partial pressure
Electric potential signal 5V) and operational amplifier AR3 the processing of non-inverting input terminal voltage (receive voltage-stabiliser tube Z1 voltage regulation signal 0.5V) difference,
Difference signal is exported, the output end of operational amplifier AR2, AR3 connect the grid of metal-oxide-semiconductor Q2, Q1 through voltage-stabiliser tube Z3, voltage-stabiliser tube Z2 respectively
Pole, the drain electrode of metal-oxide-semiconductor Q1, Q2 are total to endpoint and connect filter circuit output signal, and metal-oxide-semiconductor Q1, Q2 are in parallel with diode D3, D4 respectively,
When operational amplifier AR2 output voltage is higher than voltage-stabiliser tube Z3 pressure stabilizing value 0.7V, metal-oxide-semiconductor Q2 is connected, operational amplifier AR3 output
When voltage is lower than voltage-stabiliser tube Z2 pressure stabilizing value 0.3V, metal-oxide-semiconductor Q1 is connected, the output end of operational amplifier AR2, AR3 are also connected with two
The amplitude limiter circuit of pole pipe D1, diode D2, resistance R14 composition, operational amplifier AR2 output voltage are lower than 0.7V and operation amplifier
When device AR3 output voltage is higher than 0.3V (normal difference signal), diode D1, diode D2 are not turned on, operational amplifier AR3
Driving triode Q3 is connected in output voltage, and triode Q3 collector, emitter of the filter circuit output signal through being connected connect
To the non-inverting input terminal of operational amplifier AR4 voltage follower, it is connected to signal output port after buffering isolation, it is defeated through signal
Exit port is transferred to terminal server, and the voltage regulator circuit is used for (the difference letter when metal-oxide-semiconductor Q1 is connected in switching circuit
Number be higher than+5V upper limit standard signal 0.7V or more when), filter circuit output signal through being connected metal-oxide-semiconductor Q1 drain electrode, grid into
Enter the three-level turning circuit step by step of triode Q4, Q5, Q6 composition, when filter circuit output signal 5.7V, triode Q1 conducting, after
Electric appliance K1 coil obtains electric, normally opened contact closure, and resistance R6 is connected in parallel to the both ends of the feedback resistance R13 of operational amplifier AR5, filters
When wave circuit output signal 5.8V-6.4V, triode Q4, Q5 conducting, relay K1, K2 coil obtain electric, normally opened contact closure, electricity
Resistance R6 and resistance R7 is connected in parallel to the both ends of the feedback resistance R13 of operational amplifier AR5, and filter circuit output signal is higher than 6.4V
When, triode Q4, Q5, Q6 conducting, relay K1, K2, K3 coil obtain electric, normally opened contact closure, resistance R6 and resistance R7 and electricity
Resistance R8 be connected in parallel to operational amplifier AR5 feedback resistance R13 both ends, similarly filter circuit output signal 0.3V, 70mV,
When 50mV, turning circuit is connected the three-level of triode Q7, Q8, Q9 composition step by step step by step, resistance R9 and resistance R10 and resistance R11
The both ends of the input resistance R12 of operational amplifier AR5 are connected in parallel to, operational amplifier AR5 is changed using this and is put as the ratio of core
The amplification factor of big circuit, makes operational amplifier AR5 output voltage stabilization between 0.5V ~+5V signal, voltage is through three after adjusting
Pole pipe Q10, resistance R17, voltage-stabiliser tube Z4 pressure stabilizing export stable 0V ~+5V standard signal through signal after eliminating 0.5V fluctuation voltage
Output port is transferred to terminal server, and the signal decaying solved in network information transfer channel cannot be had by terminal server
The problem of effect receives.
Embodiment two, on the basis of example 1, the switching circuit wave reception filtering circuit output signal, all the way through transporting
The non-inverting input terminal for calculating amplifier AR2 flows into, and another way is flowed into through the inverting input terminal of operational amplifier AR3, operational amplifier
The inverting input terminal of AR2 receives the electric potential signal (5V) of power supply+12V resistance R5 after resistance R4, R5, voltage-stabiliser tube Z1 partial pressure, fortune
The non-inverting input terminal for calculating amplifier AR3 receives voltage-stabiliser tube Z1 voltage regulation signal (0.5V), the processing of operational amplifier AR2, AR3 difference,
Difference signal is exported, connects the grid of metal-oxide-semiconductor Q2, Q1 through voltage-stabiliser tube Z3, voltage-stabiliser tube Z4 respectively, the drain electrode of metal-oxide-semiconductor Q1, Q2 are total to endpoint
Filter circuit output signal is connect, metal-oxide-semiconductor Q1, Q2 are in parallel with diode D3, D4 respectively, and operational amplifier AR2 output voltage is higher than
When voltage-stabiliser tube Z3 pressure stabilizing value 0.7V, metal-oxide-semiconductor Q2 is connected, filter circuit output signal enters triode Q4 in voltage regulator circuit
Base stage, carry out signal amplitude reduce adjust, operational amplifier AR3 output voltage be lower than voltage-stabiliser tube Z2 pressure stabilizing value 0.3V when, make
Metal-oxide-semiconductor Q1 conducting, filter circuit output signal enter the base stage of triode Q7 in voltage regulator circuit, carry out signal amplitude increase
It adjusting, the output end of operational amplifier AR2, AR3 are also connected with the amplitude limiter circuit of diode D1, diode D2, resistance R14 composition,
Operational amplifier AR2 output voltage is lower than 0.7V and when operational amplifier AR3 output voltage is higher than 0.3V (normal difference signal),
Diode D1, diode D2 are not turned on, and driving triode Q3 is connected in operational amplifier AR3 output voltage, and filter circuit is defeated
Triode Q3 collector, emitter of the signal through being connected are connected to the non-inverting input terminal of operational amplifier AR4 voltage follower out,
It is connected to signal output port after buffering isolation, is transferred to terminal server, including operational amplifier through signal output port
AR2, operational amplifier AR3, the non-inverting input terminal of operational amplifier AR2, the inverting input terminal of operational amplifier AR3, metal-oxide-semiconductor Q1
Drain electrode, the drain electrode of metal-oxide-semiconductor Q2, the cathode of diode D3, the cathode of diode D4, triode Q3 collector, operation amplifier
The inverting input terminal of device AR2 is separately connected one end of one end of resistance R4, resistance R5, the non-inverting input terminal of operational amplifier AR3
It is separately connected the other end of resistance R5, the cathode of voltage-stabiliser tube Z1, the other end of resistance R4 connects power supply+12V, and voltage-stabiliser tube Z1 is just
Pole connection ground, the output end of operational amplifier AR2 are separately connected the cathode of voltage-stabiliser tube Z3, the anode of diode D2, resistance R14
Upper end, the grid of the anode connection metal-oxide-semiconductor Q2 of voltage-stabiliser tube Z3, the anode of the source electrode connection diode D4 of metal-oxide-semiconductor Q2, diode D2
Cathode connect power supply+5V, the output end of operational amplifier AR3 be separately connected the cathode of voltage-stabiliser tube Z2, diode D1 cathode,
The lower end of resistance R14, triode Q3 base stage, the grid of the anode connection metal-oxide-semiconductor Q1 of voltage-stabiliser tube Z2, the source electrode of metal-oxide-semiconductor Q1 connects
Connect the anode of diode D3, the anode connection ground of diode D2, the same phase of the emitter connection operational amplifier AR4 of triode Q3
Input terminal, the output end and signal output port of the inverting input terminal connection operational amplifier AR4 of operational amplifier AR4, operation
The end VCC of amplifier AR4 connects power supply+5V, and the end gnd of operational amplifier AR4 connects ground.
Embodiment three, on the basis of example 2, the voltage regulator circuit be used for by stable output signal 0.5V ~
+ 5V standard signal guarantees that terminal server can be received effectively, specifically (the difference letter when metal-oxide-semiconductor Q1 is connected in switching circuit
Number be higher than+5V upper limit standard signal 0.7V or more when), filter circuit output signal through being connected metal-oxide-semiconductor Q1 drain electrode, grid into
Enter the three-level turning circuit step by step of triode Q4, Q5, Q6 composition, when filter circuit output signal 5.7V, triode Q1 conducting, after
Electric appliance K1 coil obtains electric, normally opened contact closure, and resistance R6 is connected in parallel to the both ends of the feedback resistance R13 of operational amplifier AR5, filters
When wave circuit output signal 5.8V-6.4V, triode Q4, Q5 conducting, relay K1, K2 coil obtain electric, normally opened contact closure, electricity
Resistance R6 and resistance R7 is connected in parallel to the both ends of the feedback resistance R13 of operational amplifier AR5, and filter circuit output signal is higher than 6.4V
When, triode Q4, Q5, Q6 conducting, relay K1, K2, K3 coil obtain electric, normally opened contact closure, resistance R6 and resistance R7 and electricity
Resistance R8 be connected in parallel to operational amplifier AR5 feedback resistance R13 both ends, similarly filter circuit output signal 0.3V, 70mV,
When 50mV, turning circuit is connected the three-level of triode Q7, Q8, Q9 composition step by step step by step, resistance R9 and resistance R10 and resistance R11
The both ends of the input resistance R12 of operational amplifier AR5 are connected in parallel to, operational amplifier AR5 is changed using this and is put as the ratio of core
The amplification factor of big circuit, makes operational amplifier AR5 output voltage stabilization between 0.5V ~+5V signal, voltage is through three after adjusting
Pole pipe Q10, resistance R17, voltage-stabiliser tube Z4 pressure stabilizing export stable 0V ~+5V standard signal through signal after eliminating 0.5V fluctuation voltage
Output port is transferred to terminal server, including triode Q4, triode Q7, the source of the base stage connection metal-oxide-semiconductor Q2 of triode Q4
Pole, the emitter of triode Q4 are separately connected the base stage of one end of relay K1 coil, triode Q5, the emitter of triode Q5
It is separately connected one end of relay K2 coil, the base stage of triode Q6, the emitter connection relay K3 coil of triode Q6
One end, the collector of triode Q4, Q5, Q6 are all connected with power supply+12V, and the other end of relay K1, K2, K3 coil is all connected with ground,
The source electrode of the base stage connection metal-oxide-semiconductor Q1 of triode Q7, the collector of triode Q7 are separately connected one end of relay K4 coil, three
The base stage of pole pipe Q8, the collector of triode Q8 are separately connected the base stage of one end of relay K5 coil, triode Q9, triode
One end of the collector connection relay K6 coil of Q9, the emitter of triode Q7, Q8, Q9 are all connected with power supply+12V, relay
The other end of K4, K5, K6 coil is all connected with ground, one end of the common end of relay K4, K5, K6 and resistance R12, metal-oxide-semiconductor Q1
Source electrode, the normally opened contact of relay K4, K5, K6 are separately connected one end of resistance R9, resistance R10, resistance R11, resistance R9, resistance
R10, resistance R11 the other end be separately connected one end of one end of resistance R12, resistance R16, the common end of relay K1, K2, K3
Be separately connected one end of resistance R13, the output end of operational amplifier AR5, one end of resistance R17, triode Q10 collector,
The normally opened contact of relay K1, K2, K3 are separately connected one end of resistance R6, resistance R7, resistance R8, resistance R7, resistance R8, resistance
The other end of R9 is separately connected the inverting input terminal of the other end of resistance R13, the other end of resistance R16, operational amplifier AR5,
By resistance R15 connection, the end VCC of operational amplifier AR5 connects power supply+5V, fortune to the non-inverting input terminal of operational amplifier AR5
The end gnd for calculating amplifier AR5 connects ground, the base stage of triode Q10 be separately connected the other end of resistance R17, voltage-stabiliser tube Z4 it is negative
Pole, the anode connection ground of voltage-stabiliser tube Z4, the emitter connection signal output port of triode Q10；
The filter circuit receives network information transfer channel signal, and the LC filter circuit through inductance L1, capacitor C1 composition is filtered
After extraneous noise jamming, into the bandpass filter choosing of operational amplifier AR1, resistance R1-R3, capacitor C2, capacitor C3 composition
Frequently, only the frequency of level-one amplified signal is allowed to pass through, blocks the signal other than the frequency range, that is, avoids other frequency signals
It is exported after interference, including inductance L1, the left end of inductance L1 connects network information transfer channel signal, the right end difference of inductance L1
One end of ground capacity C1, one end of resistance R1 are connected, the other end of resistance R1 is separately connected one end of ground resistance R2, capacitor
One end of C2, capacitor C3 one end, the other end of capacitor C2 is separately connected the reverse phase of one end of resistance R3, operational amplifier AR1
Input terminal, the other end of capacitor C3 are separately connected the output end of the other end of resistance R3, operational amplifier AR1, operational amplifier
The non-inverting input terminal of AR1 connects ground with the end gnd.
When the present invention is specifically used, including filter circuit, switching circuit and voltage regulator circuit, the received net of filter circuit
Signal in network information transmission channel, after the LC filter circuit of inductance L1, capacitor C1 composition filters out outside noise interference, into fortune
The bandpass filter frequency-selecting for calculating amplifier AR1, resistance R1-R3, capacitor C2, capacitor C3 composition, only allows level-one amplified signal
Frequency pass through, block the signal other than the frequency range, that is, exported after avoiding other frequency signals from interfering, later access switch
The inverting input terminal of the non-inverting input terminal of operational amplifier AR2 and operational amplifier AR3 in circuit, with operational amplifier AR2's
Inverting input terminal voltage (the electric potential signal 5V for receiving power supply+12V resistance R5 after resistance R4, R5, voltage-stabiliser tube Z1 partial pressure) and fortune
Non-inverting input terminal voltage (receiving voltage-stabiliser tube Z1 voltage regulation signal 0.5V) the difference processing for calculating amplifier AR3, exports difference signal, fortune
The output end for calculating amplifier AR2, AR3 connects the grid of metal-oxide-semiconductor Q2, Q1 through voltage-stabiliser tube Z3, voltage-stabiliser tube Z4 respectively, metal-oxide-semiconductor Q1, Q2's
The endpoint altogether that drains connects filter circuit output signal, and metal-oxide-semiconductor Q1, Q2 are in parallel with diode D3, D4 respectively, and operational amplifier AR2 is defeated
When voltage is higher than voltage-stabiliser tube Z3 pressure stabilizing value 0.7V out, metal-oxide-semiconductor Q2 is connected, operational amplifier AR3 output voltage is lower than voltage-stabiliser tube
When Z3 pressure stabilizing value 0.3V, metal-oxide-semiconductor Q1 is connected, the output end of operational amplifier AR2, AR3 are also connected with diode D1, diode
The voltage detecting circuit of D2, resistance R14 composition, operational amplifier AR2 output voltage is lower than 0.7V and operational amplifier AR3 is exported
When voltage is higher than 0.3V (normal difference signal), diode D1, diode D2 are not turned on, operational amplifier AR3 output voltage
Driving triode Q3 is connected, triode Q3 collector, emitter of the filter circuit output signal through being connected are connected to operation and put
The non-inverting input terminal of big device AR4 voltage follower is connected to signal output port after buffering isolation, through signal output end oral instructions
It is defeated arrive terminal server, the voltage regulator circuit be used for when in switching circuit metal-oxide-semiconductor Q1 be connected when (difference signal be higher than+
When 5V upper limit standard signal 0.7V or more), metal-oxide-semiconductor Q1 of the filter circuit output signal through being connected drains, grid enters triode
The three-level turning circuit step by step of Q4, Q5, Q6 composition, when filter circuit output signal 5.7V, triode Q1 conducting, relay K1 line
Enclose electric, normally opened contact closure, resistance R6 is connected in parallel to the both ends of the feedback resistance R13 of operational amplifier AR5, and filter circuit is defeated
Out when signal 5.8V-6.4V, triode Q4, Q5 conducting, relay K1, K2 coil obtain electric, normally opened contact closure, resistance R6 and electricity
Resistance R7 is connected in parallel to the both ends of the feedback resistance R13 of operational amplifier AR5, when filter circuit output signal is higher than 6.4V, three poles
Pipe Q4, Q5, Q6 conducting, relay K1, K2, K3 coil obtain electric, normally opened contact closure, resistance R6 and resistance R7 and resistance R8 is in parallel
It is connected to the both ends of the feedback resistance R13 of operational amplifier AR5, similarly when filter circuit output signal 0.3V, 70mV, 50mV, three
Turning circuit is connected the three-level of pole pipe Q7, Q8, Q9 composition step by step step by step, and resistance R9 and resistance R10 and resistance R11 are connected in parallel to fortune
The both ends for calculating the input resistance R12 of amplifier AR5, change operational amplifier AR5 putting as the scaling circuit of core using this
Big multiple makes operational amplifier AR5 output voltage stabilization between 0.5V ~+5V signal, and voltage is through triode Q10, electricity after adjusting
Resistance R17, voltage-stabiliser tube Z4 pressure stabilizing export stable 0V ~+5V standard signal through signal output end oral instructions after eliminating 0.5V fluctuation voltage
Defeated to arrive terminal server, solve the signal decaying in network information transfer channel received cannot effectively be asked by terminal server
Topic.
The above is that further detailed description of the invention, and it cannot be said that the present invention in conjunction with specific embodiment
Specific implementation is limited only to this；Belonging to the present invention and for those skilled in the technology concerned, it is being based on skill of the present invention
Under the premise of art scheme thinking, it is made expansion and operating method, data replacement, should all fall in the scope of the present invention it
It is interior.
Claims (3)
1. a kind of Analysis of Network Information system, including filter circuit, switching circuit and voltage regulator circuit, which is characterized in that filter
The received network information transfer channel signal of wave circuit filters out external interference through LC, operational amplifier AR1 is core
Bandpass filter only allows the frequency signal of network information transfer channel signal to pass through, and blocks the letter other than the frequency range
Number, that is, anti-interference rear output is improved, later in access switch circuit, switching circuit is through operational amplifier AR2, operational amplifier
The processing of AR3 difference exports difference signal, and normal difference signal driving triode Q3 conducting, filter circuit output signal is through operation
Signal output port is connected to after the buffering isolation of amplifier AR4 voltage follower, abnormal difference signal control metal-oxide-semiconductor Q1, Q2's
On and off controls the resistance value of resistance R13 and the resistance value of resistance R12 in voltage regulator circuit, to control operational amplifier
The multiple that AR3 amplifies filter circuit output signal, with the size of this adjusting signal amplitude, voltage is through triode Q10 after adjusting
Signal output port is connected to after pressure stabilizing.
2. a kind of Analysis of Network Information system as described in claim 1, which is characterized in that the switching circuit includes operation amplifier
Device AR2, operational amplifier AR3, the non-inverting input terminal of operational amplifier AR2, the inverting input terminal of operational amplifier AR3, metal-oxide-semiconductor
The drain electrode of Q1, the drain electrode of metal-oxide-semiconductor Q2, the cathode of diode D3, the cathode of diode D4, triode Q3 collector, operation puts
The inverting input terminal of big device AR2 is separately connected one end of one end of resistance R4, resistance R5, the homophase input of operational amplifier AR3
End is separately connected the cathode of the other end of resistance R5, voltage-stabiliser tube Z1, and the other end of resistance R4 connects power supply+12V, voltage-stabiliser tube Z1's
Anode connection ground, the output end of operational amplifier AR2 are separately connected the cathode of voltage-stabiliser tube Z3, the anode of diode D2, resistance R14
Upper end, voltage-stabiliser tube Z3 anode connection metal-oxide-semiconductor Q2 grid, metal-oxide-semiconductor Q2 source electrode connection diode D4 anode, diode
The cathode of D2 connects power supply+5V, the output end of operational amplifier AR3 be separately connected the cathode of voltage-stabiliser tube Z2, diode D1 it is negative
Pole, the lower end of resistance R14, triode Q3 base stage, voltage-stabiliser tube Z2 anode connection metal-oxide-semiconductor Q1 grid, the source electrode of metal-oxide-semiconductor Q1
The anode of diode D3 is connected, the anode connection ground of diode D2, the emitter connection operational amplifier AR4's of triode Q3 is same
Phase input terminal, the output end and signal output port of the inverting input terminal connection operational amplifier AR4 of operational amplifier AR4, fortune
The end VCC for calculating amplifier AR4 connects power supply+5V, and the end gnd of operational amplifier AR4 connects ground.
3. a kind of Analysis of Network Information system as described in claim 1, which is characterized in that the voltage regulator circuit includes three poles
Pipe Q4, triode Q7, the source electrode of the base stage connection metal-oxide-semiconductor Q2 of triode Q4, the emitter of triode Q4 are separately connected relay
One end of K1 coil, triode Q5 base stage, the emitter of triode Q5 is separately connected one end of relay K2 coil, triode
The base stage of Q6, one end of the emitter connection relay K3 coil of triode Q6, the collector of triode Q4, Q5, Q6 are all connected with
Power supply+12V, the other end of relay K1, K2, K3 coil are all connected with ground, and the base stage of triode Q7 connects the source electrode of metal-oxide-semiconductor Q1,
The collector of triode Q7 is separately connected the base stage of one end of relay K4 coil, triode Q8, the collector point of triode Q8
Not Lian Jie one end of relay K5 coil, triode Q9 base stage, the one of the collector connection relay K6 coil of triode Q9
End, the emitter of triode Q7, Q8, Q9 are all connected with power supply+12V, and the other end of relay K4, K5, K6 coil is all connected with ground, after
The source electrode of the common end of electric appliance K4, K5, K6 and one end of resistance R12, metal-oxide-semiconductor Q1, the normally opened contact point of relay K4, K5, K6
Not Lian Jie resistance R9, resistance R10, resistance R11 one end, resistance R9, resistance R10, resistance R11 the other end be separately connected resistance
One end of R12, resistance R16 one end, the common end of relay K1, K2, K3 are separately connected one end of resistance R13, operation amplifier
The output end of device AR5, one end of resistance R17, triode Q10 collector, the normally opened contact of relay K1, K2, K3 connects respectively
One end of connecting resistance R6, resistance R7, resistance R8, resistance R7, resistance R8, resistance R9 the other end be separately connected the another of resistance R13
One end, the other end of resistance R16, operational amplifier AR5 inverting input terminal, the non-inverting input terminal of operational amplifier AR5 passes through
Resistance R15 connection ground, the end VCC of operational amplifier AR5 connect power supply+5V, and the end gnd of operational amplifier AR5 connects ground, three poles
The base stage of pipe Q10 is separately connected the cathode of the other end of resistance R17, voltage-stabiliser tube Z4, the anode connection ground of voltage-stabiliser tube Z4, triode
The emitter connection signal output port of Q10；
The filter circuit includes inductance L1, and the left end of inductance L1 connects network information transfer channel signal, the right side of inductance L1
End is separately connected one end of one end of ground capacity C1, resistance R1, and the other end of resistance R1 is separately connected the one of ground resistance R2
End, one end of capacitor C2, capacitor C3 one end, the other end of capacitor C2 is separately connected one end of resistance R3, operational amplifier AR1
Inverting input terminal, the other end of capacitor C3 is separately connected the output end of the other end of resistance R3, operational amplifier AR1, operation
The non-inverting input terminal of amplifier AR1 connects ground with the end gnd.
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Cited By (1)
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|---|---|---|---|---|
| CN111327976A (en) * | 2020-03-27 | 2020-06-23 | 国网河南省电力公司信息通信公司 | Optical fiber communication network protection circuit |
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