CN110233780A - A kind of computer network signal supervisory instrument - Google Patents
A kind of computer network signal supervisory instrument Download PDFInfo
- Publication number
- CN110233780A CN110233780A CN201910695280.5A CN201910695280A CN110233780A CN 110233780 A CN110233780 A CN 110233780A CN 201910695280 A CN201910695280 A CN 201910695280A CN 110233780 A CN110233780 A CN 110233780A
- Authority
- CN
- China
- Prior art keywords
- resistance
- triode
- capacitor
- signal
- pulse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
Abstract
A kind of computer network signal supervisory instrument of the invention, the electric impulse signal that the photoelectric conversion circuit detects photoelectrical coupler, after isolation, enter pulse frequency resonance circuit all the way, enter the pulse duration frequency signal that oscillating circuit generates 2 frequencys multiplication in time switch K1 turn-on time after primary frequency-selecting, triode Q3 is the self-regulated resonance of core, the counter A counting into signal processor of the resonance frequency of output crystal oscillator Y2 oscillation frequency integral multiple obtains rate signal, another way enters pulse period reference circuit, it is broadened through 2 times, detect the rising edge and failing edge of pulse, crystal oscillator Y1 concussion number is sent into counter B all the way and is counted within a pulse period, obtain a pulse cycle time, inverse is asked to obtain rate signal again, another two-way respectively enters oscillating circuit and self-regulated resonance circuit, most Afterwards by signal processor to rate signal is obtained after two rate signal mean value computations, the precision of computer network signal rate detection is improved.
Description
Technical field
The present invention relates to network signal detection technique fields, more particularly to a kind of computer network signal supervisory instrument.
Background technique
With the fast development of computer internet, the detection of computer network signal performance is more and more important, main at present
(rate, time delay, declines at handling capacity network signal performance when completing detection computer communication using network signal detector
Subtract, impedance, the detection of the performances such as voltage standing wave ratio), computer network signal is detected specifically by corresponding detection probe, such as
Electrooptical device detection rates, optical power units test intensity, after through signal processor conditioning calibration after pass through display screen
It shows.
If but the electric impulse signal after the computer network pulse signal conversion of electrooptical device real-time detection directly passes
It is defeated to count output display to signal processor, due to being set during network pulse signal transmission by extraneous interference, or communication
Standby quality itself is not ideal enough, and the signal of transmission can be made to be distorted, and using the electric pulse frequency after electrooptical device conversion
Rate is vulnerable to extraneous frequency interferences, the influence of measurement circuit, it may occur that frequency deviation, the signal rate that network signal detector tests out
Error is big.
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 computer networks
Signal supervisory instrument, have be skillfully constructed, the characteristic of human oriented design, effective solution network signal detector tests out
The big problem of signal rate error.
Its technical solution solved is, including network signal detector, and the network signal detector is by accordingly popping one's head in
The computer network signal of detection is shown after signal processor conditioning calibration by display screen, which is characterized in that described
The computer network rate signal of photoelectric conversion probe detection is through photoelectric conversion circuit, pulse frequency resonance circuit, pulse period
It is transferred to counter after reference circuit processing and is counted, message retransmission is to signal processor after counting；
The real-time computer networks pulse signal that photoelectrical coupler detects is converted to electric impulse signal by the photoelectric conversion circuit,
By exporting after triode Q1 isolation, enter pulse frequency resonance circuit all the way, through RC frequency selection circuit primary frequency-selecting, into triode
Q2 is that the oscillating circuit of core generates the pulse duration frequency signal of 2 frequencys multiplication in time switch K1 turn-on time, and triode Q3 is core
Self-regulated resonance, export crystal oscillator Y2 oscillation frequency integral multiple resonance frequency into signal processor counter A obtain
Rate signal out, another way enter pulse period reference circuit, are first the pulse exhibition of core through NAND gate U1, NAND gate U2
2 times of stretch circuit broadenings, then the rising edge and failing edge for broadening afterpulse are detected by d type flip flop U3, within a pulse period
Crystal oscillator Y1 oscillation frequency is sent into counter B in signal processor all the way and is counted, and obtains a pulse cycle time, then ask down
Number show that rate signal, another two-way respectively enter oscillating circuit and self-regulated resonance, to correct oscillation frequency and resonance
Frequency will finally be calculated the rate of computer network signal by signal processor after two rate signal mean value computations.
Preferably, the pulse frequency resonance circuit includes resistance R4, the current collection of one end connecting triode Q1 of resistance R4
Pole, one end of the other end connection capacitor C3 of resistance R4, the other end of capacitor C3 are separately connected one end of ground resistance R5, ground connection
One end of capacitor C4, capacitor C5 one end, the other end of capacitor C5 is separately connected one end of resistance R6, one end of capacitor C6, three
The base stage of pole pipe Q2, the other end of capacitor C6 are separately connected one end of ground capacity C7, the emitter of triode Q2, ground resistance
One end of R8, one end of grounded inductor L1, potentiometer RP1 left end, triode Q2 collector connection resistance R7 one end, three
The base stage of the emitter of pole pipe Q4, the cathode of diode D2, triode Q5, the other end of resistance R7 and the other end of resistance R6 connect
The left end of switch K 1 is connect, the right end of switch K 1 connects power supply+5V, and the right end of potentiometer RP1 and adjustable end are separately connected three poles
The emitter of pipe Q3, one end of ground resistance R10, one end of grounded inductor L2, one end of ground capacity C9, capacitor C8 one
End, the other end of capacitor C8 be separately connected one end of resistance R11, the base stage of triode Q3, crystal oscillator Y2 one end, triode Q3's
Collector connect one end of resistance R9, the base stage of triode Q4, triode Q6 emitter, the other end and resistance of resistance R9
The other end of R11 connects power supply+5V, the collector of triode Q4 be separately connected one end of resistance R12, electrolytic capacitor E1 it is negative
Pole, the anode of electrolytic capacitor E1 are separately connected the emitter of the anode of diode D2, triode Q5, the collector point of triode Q5
Not Lian Jie the anode of varactor DC2, resistance R16 one end, the cathode connection crystal oscillator Y2's of varactor DC2 is another
End, the other end of resistance R16 are separately connected the base stage of one end of ground resistance R17, triode Q6, the connection of triode Q6 collector
One end of capacitor C10, the other end of capacitor C10 are connected to counter A；
The pulse period reference circuit includes capacitor C2, the collector of one end connecting triode Q1 of capacitor C2, capacitor C2's
The other end connects the pin 1 and pin 2 of NAND gate U1, and the pin 3 of NAND gate U1 is separately connected the cathode of diode D1, resistance
One end of R13, NAND gate U2 pin 5, the anode of diode D1 is separately connected one end of resistance R13, ground connection electrolytic capacitor E3
Anode, NAND gate U2 pin 6, the pin 3 of NAND gate U2 connects the end CP of d type flip flop U3, the end the D connection of d type flip flop U3
The cathode of diode D3, one end of the end the Q connection inductance L3 of anode the connection power supply+5V, d type flip flop U3 of diode D3, inductance
The other end of L3 is separately connected the pin 1 and pin 4 of one end of ground capacity C15, crystal oscillator Y1, and the pin 2 of crystal oscillator Y1 passes through electricity
Hold C16 connection ground, the pin 3 of crystal oscillator Y1 is separately connected one end of one end of capacitor C12, capacitor C14, the other end of capacitor C12
The anode of varactor DC1, the hair of the cathode connecting triode Q2 of varactor DC1 are connected with one end of grounded inductor L5
Emitter-base bandgap grading, one end of the other end connection inductance L4 of capacitor C14, the other end of inductance L4 are separately connected one end of inductance L8, ground connection
One end of inductance L7, ground capacity C16 one end, one end of the other end connection capacitor C17 of inductance L8, capacitor C17's is another
One end of end connection inductance L6, the other end of inductance L6 and one end of ground capacity C11 are connected to the emitter of triode Q3.
Due to the use of above technical scheme, the invention has the following advantages over the prior art: photoelectrical coupler is examined
The real-time computer networks pulse signal of survey is converted to electric impulse signal, uses shake to crystal oscillator Y1 within a pulse period all the way
Swing number and count by counter B and obtain a pulse cycle time, then inverse is asked to obtain rate signal, another way use by
Electric impulse signal generates the pulse frequency letter of 2 frequencys multiplication in time switch K1 turn-on time as driving pulse excitation oscillation circuit
Number, and access crystal oscillator Y1 concussion number within a pulse period and make fundamental frequency signal, make oscillating circuit in pulse duration frequency signal
Rising edge, failing edge are shaken, and other disturbing pulse signals do not shake, and generate pulse duration frequency signal to improve oscillating circuit
Precision, reduce the generation of distorted signal or the electric impulse signal frequency being disturbed erroneous judgement, and generated again through self-regulated resonance circuit
The resonance frequency of crystal oscillator Y2 oscillation frequency integral multiple obtains rate signal to counter A after amendment, then by signal processor mean value
The rate resonance frequency of computer network signal is calculated after calculating, so as to improve the essence of computer network signal rate measurement
Degree.
Detailed description of the invention
Fig. 1 is pulse frequency resonance circuit schematic diagram of the invention.
Fig. 2 is pulse period reference circuit schematic diagram of the invention.
Fig. 3 is photoelectric conversion circuit schematic diagram of the invention.
Specific embodiment
For the present invention aforementioned and other technology contents, feature and effect, in following cooperation with reference to figures 1 through Fig. 3 pairs
In the detailed description of embodiment, can clearly it present.The structure content being previously mentioned in following embodiment is attached with specification
Figure is reference.
Each exemplary embodiment of the invention is described below with reference to accompanying drawings.
A kind of computer network signal supervisory instrument, including network signal detector, the network signal detector pass through
The computer network signal of corresponding probe detection is shown after signal processor conditioning calibration by display screen, the light
The computer network rate signal of electricity conversion probe detection is through photoelectric conversion circuit, pulse frequency resonance circuit, pulse period base
It is transferred to counter after quasi- processing of circuit to be counted, message retransmission is to signal processor after counting；
The pulse frequency resonance circuit receives the electric impulse signal of photoelectric conversion circuit output, through resistance R4, capacitor C3, resistance
(such as 100MHz fiber optic communication, setting frequency-selecting frequency are 50MHz-101 for the R C frequency selection circuit primary frequency-selecting of R5, capacitor C5 composition
MHz), time switch K1 is generated into the oscillating circuit that triode Q2, capacitor C5- capacitor C7, inductance L1 are core composition to connect
The pulse duration frequency signal of 2 frequencys multiplication in time, and access crystal oscillator Y1 within the pulse period that pulse period reference circuit exports
Oscillation frequency makees fundamental frequency signal, shakes oscillating circuit in rising edge, the failing edge of pulse duration frequency signal, other interference
Pulse signal does not shake, to improve the precision that oscillating circuit generates pulse duration frequency signal, at the same time triode Q3, crystal oscillator
Y2, capacitor C8, capacitor C9, triode Q4 and triode Q5 are that the self-regulated resonance circuit concussion of core composition generates resonance frequency,
And crystal oscillator Y1 oscillation frequency within the pulse period that pulse period reference circuit exports is accessed, make fundamental frequency signal, makes self-regulated
Resonance circuit is shaken in rising edge, the failing edge of pulse duration frequency signal, and other disturbing pulse signals do not shake, to improve
Oscillating circuit generates the precision of pulse duration frequency signal, and wherein oscillating circuit, self-regulated resonance circuit constitute differential circuit in structure,
Oscillation frequency resonance frequency is added to the frequency electricity of triode Q4, triode Q5, electrolytic capacitor E1, diode D2, resistance R12 composition
Voltage conversion circuit, the corresponding voltage of collector output frequency difference of triode Q5, is added to varactor as tuning voltage
The capacitance for changing varactor DC1 on DC1, corrects the oscillation frequency of crystal oscillator Y2, so that resonance frequency is adjusted, difference on the frequency pair
The voltage answered through resistance R16 and resistance R17 partial pressure after voltage be less than 0.3V when, triode Q6 conducting, output amendment after crystal oscillator Y2
The resonance frequency of oscillation frequency integral multiple calculates the rate of computer network signal with this to counter A, then by signal processing
The rate resonance frequency of computer network signal is calculated after device mean value computation, so as to improve the measurement of computer network signal rate
Precision, including resistance R4, resistance R4 one end connecting triode Q1 collector, the other end connection capacitor C3 of resistance R4
One end, the other end of capacitor C3 be separately connected one end of ground resistance R5, one end of ground capacity C4, capacitor C5 one end, electricity
Hold C5 the other end be separately connected one end of resistance R6, one end of capacitor C6, triode Q2 base stage, the other end of capacitor C6 point
It Lian Jie not one end of ground capacity C7, the emitter of triode Q2, one end of ground resistance R8, one end of grounded inductor L1, electricity
The left end of position device RP1, collector connection one end of resistance R7 of triode Q2, the emitter of triode Q4, diode D2 it is negative
Pole, triode Q5 base stage, the left end of the other end connection switch K 1 of the other end and resistance R6 of resistance R7, the right side of switch K 1
End connection power supply+5V, the right end of potentiometer RP1 and adjustable end be separately connected the emitter of triode Q3, ground resistance R10 one
End, one end of grounded inductor L2, one end of ground capacity C9, capacitor C8 one end, the other end of capacitor C8 is separately connected resistance
One end of R11, the base stage of triode Q3, crystal oscillator Y2 one end, collector connection one end of resistance R9 of triode Q3, triode
The emitter of the base stage of Q4, triode Q6, the other end of resistance R9 connect power supply+5V, triode Q4 with the other end of resistance R11
Collector be separately connected the cathode of one end of resistance R12, electrolytic capacitor E1, the anode of electrolytic capacitor E1 is separately connected diode
The emitter of the anode of D2, triode Q5, the collector of triode Q5 are separately connected the anode of varactor DC2, resistance R16
One end, the other end of the cathode connection crystal oscillator Y2 of varactor DC2, the other end of resistance R16 is separately connected ground resistance
One end of R17, triode Q6 base stage, triode Q6 collector connects one end of capacitor C10, the other end connection of capacitor C10
To counter A；
The pulse period reference circuit receives the electric impulse signal of photoelectric conversion circuit output, is coupled to NAND gate through capacitor C2
The stretch circuit that U1, NAND gate U2, diode D1, resistance R13, electrolytic capacitor E3 are formed, by the pulse of electric impulse signal
Width carries out 2 times of broadenings, wherein the size broadened is from resistance R13 to the charge constant of electrolytic capacitor E3 and electrolytic capacitor E3
It is determined by discharge time of diode D1, is added to the end CP of d type flip flop U3 later, when rising edge of a pulse, d type flip flop U3 output
+ 5V, exports the power end that stable+5V is added to source crystal oscillator Y1 after inductance L3 and capacitor C15 filtering, and crystal oscillator Y1 starts to shake
Work, when risen under pulse along when, by being that high level is effective with the end CP of d type flip flop U3, d type flip flop U3 keeps output+5V, brilliant
The Y1 that shakes keeps concussion work, and when next rising edge of a pulse, resistance R15, capacitor C15 reset, and unison counter B clock end resets,
Crystal oscillator Y1 starts again at concussion work, so far obtains a pulse period, the crystal oscillator Y1 oscillation frequency within a pulse period
It is sent into counter B all the way to be counted, is finally obtained used in a pulse period divided by 5 again multiplied by the concussion primary time used
Time (can carry out multiplication and division operation using multiplier to obtain), then inverse is asked to show that rate signal, another two-way respectively enter concussion
Circuit and self-regulated resonance, to correct oscillation frequency and resonance frequency, including capacitor C2, one end connection three of capacitor C2
The collector of pole pipe Q1, the pin 1 and pin 2 of the other end connection NAND gate U1 of capacitor C2, the pin 3 of NAND gate U1 connect respectively
The pin 5 of the cathode of diode D1, one end of resistance R13, NAND gate U2 are connect, the anode of diode D1 is separately connected resistance R13
One end, be grounded the pin 6 of the anode of electrolytic capacitor E3, NAND gate U2, the pin 3 of NAND gate U2 connects the CP of d type flip flop U3
End, the cathode of the end the D connection diode D3 of d type flip flop U3, the anode connection power supply+5V of diode D3, the end Q of d type flip flop U3
One end of inductance L3 is connected, the other end of inductance L3 is separately connected the pin 1 and pin of one end of ground capacity C15, crystal oscillator Y1
By capacitor C16 connection, the pin 3 of crystal oscillator Y1 is separately connected one end of capacitor C12, capacitor C14 to the pin 2 of 4, crystal oscillator Y1
One end, the other end of capacitor C12 connect the anode of varactor DC1 with one end of grounded inductor L5, varactor DC1's
The emitter of cathode connecting triode Q2, one end of the other end connection inductance L4 of capacitor C14, the other end of inductance L4 connect respectively
Connect one end of inductance L8, one end of grounded inductor L7, ground capacity C16 one end, the other end connection capacitor C17 of inductance L8
The one of one end, other end connection one end of inductance L6 of capacitor C17, counter B, the other end of inductance L6 and ground capacity C11
End is connected to the emitter of triode Q3；
Real-time computer networks pulse signal (the computer network communication that the photoelectric conversion circuit detects photoelectrical coupler U1
When, pass through communication apparatus export light-pulse generator) be converted to+5V or ground low and high level electric impulse signal, by triode Q1
Buffering isolation, exports, including the pin 1 of photoelectrical coupler U1, photoelectrical coupler U1 are separately connected electricity after improving anti-interference ability
Hold one end of C1, one end of resistance R1, the other end of capacitor C1 and the pin 2 of photoelectrical coupler U1 connect ground, and resistance R1's is another
One end connects power supply+5V, and the pin 4 of photoelectrical coupler U1 is separately connected the base stage of one end of resistance R2, triode Q1, photoelectricity coupling
The pin 3 of clutch U1, the emitter of triode Q1 connect ground, one end of the collector connection resistance R3 of triode Q1, resistance R2
The other end, resistance R3 the other end connect power supply+5V.
When the present invention is specifically used, the real-time computer networks pulse that photoelectric conversion circuit detects photoelectrical coupler U1 is believed
Number (when computer network communication, pass through communication apparatus export light-pulse generator) be converted to+5V or ground low and high level electric arteries and veins
Signal is rushed, is buffered and is isolated by triode Q1, is exported after improving anti-interference ability, enters pulse frequency resonance circuit all the way, through R C
Frequency selection circuit primary frequency-selecting, it is fixed to generate into the oscillating circuit that triode Q2, capacitor C5- capacitor C7, inductance L1 are core composition
The pulse duration frequency signal of 2 frequencys multiplication in Shi Kaiguan K1 turn-on time, and access a pulse week of pulse period reference circuit output
Crystal oscillator Y1 oscillation frequency, makees fundamental frequency signal within phase, shakes oscillating circuit in rising edge, the failing edge of pulse duration frequency signal
It swings, other disturbing pulse signals do not shake, to improve the precision that oscillating circuit generates pulse duration frequency signal, at the same time three pole
Pipe Q3, crystal oscillator Y2, capacitor C8, capacitor C9, triode Q4 and triode Q5 are that the self-regulated resonance circuit of core composition shakes generation
Resonance frequency, and crystal oscillator Y1 oscillation frequency within the pulse period that pulse period reference circuit exports is accessed, make fundamental frequency letter
Number, shake self-regulated resonance circuit in rising edge, the failing edge of pulse duration frequency signal, other disturbing pulse signals do not shake
It swings, to improve the precision that oscillating circuit generates pulse duration frequency signal, wherein oscillating circuit, self-regulated resonance circuit are constituted in structure
Differential circuit, oscillation frequency resonance frequency are added to triode Q4, triode Q5, electrolytic capacitor E1, diode D2, resistance R12 group
At frequency-voltage conversion circuit, the corresponding voltage of collector output frequency difference of triode Q5 is added to as tuning voltage
The capacitance for changing varactor DC1 on varactor DC1, corrects the oscillation frequency of crystal oscillator Y2, to adjust resonance frequency
Rate, the corresponding voltage of difference on the frequency when voltage is less than 0.3V after resistance R16 and resistance R17 partial pressure, triode Q6 conducting, repair by output
The resonance frequency of crystal oscillator Y2 oscillation frequency integral multiple calculates the rate of computer network signal with this to counter A after just, then
By calculating the rate resonance frequency of computer network signal after signal processor mean value computation, so as to improve computer network letter
The precision of number speed measurement, another way enter pulse period reference circuit, through capacitor C2 be coupled to NAND gate U1, NAND gate U2,
The pulse width of electric impulse signal is carried out 2 times of exhibitions by the stretch circuit that diode D1, resistance R13, electrolytic capacitor E3 are formed
Width, is added to the end CP of d type flip flop U3 later, and when rising edge of a pulse, d type flip flop U3 output+5V is added to the power supply of source crystal oscillator Y1
End, crystal oscillator Y1 start shake work, when under pulse rise along when, by with the end CP of d type flip flop U3 be high level it is effective, d type flip flop
U3 keeps output+5V, crystal oscillator Y1 to keep concussion work, and when next rising edge of a pulse, resistance R15, capacitor C15 reset, and counts simultaneously
Number device B clock ends reset, and crystal oscillator Y1 starts again at concussion work, so far obtain a pulse period, a pulse period it
Interior crystal oscillator Y1 oscillation frequency is sent into counter B all the way and is counted, and finally obtains one divided by 5 again multiplied by the concussion primary time used
Time used in a pulse period, then inverse is asked to show that rate signal, another two-way respectively enter oscillating circuit and self-regulated resonance electricity
Road resonance, to correct oscillation frequency and resonance frequency.
Claims (3)
1. a kind of computer network signal supervisory instrument, including network signal detector, the network signal detector passes through phase
Should pop one's head in the computer network signal of detection, be shown after signal processor conditioning calibration by display screen, feature exists
In the computer network rate signal of the photoelectric conversion probe detection is through photoelectric conversion circuit, pulse frequency resonance circuit, arteries and veins
It rushes after periodic basis processing of circuit and is transferred to counter and is counted, message retransmission is to signal processor after counting；
The real-time computer networks pulse signal that photoelectrical coupler detects is converted to electric impulse signal by the photoelectric conversion circuit,
By exporting after triode Q1 isolation, enter pulse frequency resonance circuit all the way, through RC frequency selection circuit primary frequency-selecting, into triode
Q2 is that the oscillating circuit of core generates the pulse duration frequency signal of 2 frequencys multiplication in time switch K1 turn-on time, and triode Q3 is core
Self-regulated resonance, export crystal oscillator Y2 oscillation frequency integral multiple resonance frequency into signal processor counter A obtain
Rate signal out, another way enter pulse period reference circuit, are first the pulse exhibition of core through NAND gate U1, NAND gate U2
2 times of stretch circuit broadenings, then the rising edge and failing edge for broadening afterpulse are detected by d type flip flop U3, within a pulse period
Crystal oscillator Y1 oscillation frequency is sent into counter B in signal processor all the way and is counted, and obtains a pulse cycle time, then ask down
Number show that rate signal, another two-way respectively enter oscillating circuit and self-regulated resonance, to correct oscillation frequency and resonance
Frequency will finally be calculated the rate of computer network signal by signal processor after two rate signal mean value computations.
2. a kind of computer network signal supervisory instrument as described in claim 1, which is characterized in that the pulse frequency resonance electricity
Road includes resistance R4, the collector of one end connecting triode Q1 of resistance R4, one end of the other end connection capacitor C3 of resistance R4,
The other end of capacitor C3 be separately connected one end of ground resistance R5, one end of ground capacity C4, capacitor C5 one end, capacitor C5's
The other end be separately connected one end of resistance R6, one end of capacitor C6, triode Q2 base stage, the other end of capacitor C6 is separately connected
One end of ground capacity C7, the emitter of triode Q2, one end of ground resistance R8, one end of grounded inductor L1, potentiometer RP1
Left end, the collector of triode Q2 connects one end of resistance R7, the emitter of triode Q4, the cathode of diode D2, three poles
The base stage of pipe Q5, the left end of the other end connection switch K 1 of the other end and resistance R6 of resistance R7, the right end connection of switch K 1
Power supply+5V, the right end of potentiometer RP1 and adjustable end be separately connected the emitter of triode Q3, ground resistance R10 one end, connect
One end of ground inductance L2, one end of ground capacity C9, capacitor C8 one end, the other end of capacitor C8 is separately connected resistance R11's
One end, the base stage of triode Q3, crystal oscillator Y2 one end, collector connection one end of resistance R9 of triode Q3, triode Q4
The other end of the emitter of base stage, triode Q6, resistance R9 connects power supply+5V, the collection of triode Q4 with the other end of resistance R11
Electrode is separately connected the cathode of one end of resistance R12, electrolytic capacitor E1, and the anode of electrolytic capacitor E1 is separately connected diode D2's
Anode, triode Q5 emitter, the collector of triode Q5 be separately connected the anode of varactor DC2, resistance R16 one
End, the other end of the cathode connection crystal oscillator Y2 of varactor DC2, the other end of resistance R16 are separately connected ground resistance R17's
One end, triode Q6 base stage, triode Q6 collector connects one end of capacitor C10, and the other end of capacitor C10 is connected to counting
Device A；
The pulse period reference circuit includes capacitor C2, the collector of one end connecting triode Q1 of capacitor C2, capacitor C2's
The other end connects the pin 1 and pin 2 of NAND gate U1, and the pin 3 of NAND gate U1 is separately connected the cathode of diode D1, resistance
One end of R13, NAND gate U2 pin 5, the anode of diode D1 is separately connected one end of resistance R13, ground connection electrolytic capacitor E3
Anode, NAND gate U2 pin 6, the pin 3 of NAND gate U2 connects the end CP of d type flip flop U3, the end the D connection of d type flip flop U3
The cathode of diode D3, one end of the end the Q connection inductance L3 of anode the connection power supply+5V, d type flip flop U3 of diode D3, inductance
The other end of L3 is separately connected the pin 1 and pin 4 of one end of ground capacity C15, crystal oscillator Y1, and the pin 2 of crystal oscillator Y1 passes through electricity
Hold C16 connection ground, the pin 3 of crystal oscillator Y1 is separately connected one end of one end of capacitor C12, capacitor C14, the other end of capacitor C12
The anode of varactor DC1, the hair of the cathode connecting triode Q2 of varactor DC1 are connected with one end of grounded inductor L5
Emitter-base bandgap grading, one end of the other end connection inductance L4 of capacitor C14, the other end of inductance L4 are separately connected one end of inductance L8, ground connection
One end of inductance L7, ground capacity C16 one end, one end of the other end connection capacitor C17 of inductance L8, capacitor C17's is another
One end of end connection inductance L6, the other end of inductance L6 and one end of ground capacity C11 are connected to the emitter of triode Q3.
3. a kind of computer network signal supervisory instrument as described in claim 1, which is characterized in that the photoelectric conversion circuit packet
Photoelectrical coupler U1 is included, the pin 1 of photoelectrical coupler U1 is separately connected one end of one end of capacitor C1, resistance R1, capacitor C1's
The pin 2 of the other end and photoelectrical coupler U1 connection ground, the other end of resistance R1 connect power supply+5V, and photoelectrical coupler U1's draws
Foot 4 is separately connected the base stage of one end of resistance R2, triode Q1, and the pin 3 of photoelectrical coupler U1, the emitter of triode Q1 connect
Ground connection, one end of the collector connection resistance R3 of triode Q1, the other end of resistance R2, the other end of resistance R3 connect power supply
+5V。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695280.5A CN110233780B (en) | 2019-07-30 | 2019-07-30 | Computer network signal detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695280.5A CN110233780B (en) | 2019-07-30 | 2019-07-30 | Computer network signal detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110233780A true CN110233780A (en) | 2019-09-13 |
| CN110233780B CN110233780B (en) | 2020-09-08 |
Family
ID=67855225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910695280.5A Active CN110233780B (en) | 2019-07-30 | 2019-07-30 | Computer network signal detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110233780B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325473A (en) * | 2021-12-24 | 2022-04-12 | 广州星际悦动股份有限公司 | Short circuit detection circuit, method, device, electronic device and storage medium |
| CN115078977A (en) * | 2022-06-30 | 2022-09-20 | 兰州理工大学 | Diagnosis and detection device for analog circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6025471A (en) * | 1983-07-22 | 1985-02-08 | Hidehiko Yamada | Optical displacement measuring method |
| CN203365595U (en) * | 2013-08-15 | 2013-12-25 | 黄勇 | Optoelectronic coupler detector |
| US9548809B1 (en) * | 2013-07-11 | 2017-01-17 | Inphi Corporation | Built-in self test for loopback on communication system on chip |
| CN106603323A (en) * | 2015-10-20 | 2017-04-26 | 技嘉科技股份有限公司 | Detection fixture and network interface transmission rate detection method |
| CN207664985U (en) * | 2018-01-23 | 2018-07-27 | 国网河南省电力公司信息通信公司 | Optical-fiber network rate detection circuit |
-
2019
- 2019-07-30 CN CN201910695280.5A patent/CN110233780B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6025471A (en) * | 1983-07-22 | 1985-02-08 | Hidehiko Yamada | Optical displacement measuring method |
| US9548809B1 (en) * | 2013-07-11 | 2017-01-17 | Inphi Corporation | Built-in self test for loopback on communication system on chip |
| CN203365595U (en) * | 2013-08-15 | 2013-12-25 | 黄勇 | Optoelectronic coupler detector |
| CN106603323A (en) * | 2015-10-20 | 2017-04-26 | 技嘉科技股份有限公司 | Detection fixture and network interface transmission rate detection method |
| CN207664985U (en) * | 2018-01-23 | 2018-07-27 | 国网河南省电力公司信息通信公司 | Optical-fiber network rate detection circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325473A (en) * | 2021-12-24 | 2022-04-12 | 广州星际悦动股份有限公司 | Short circuit detection circuit, method, device, electronic device and storage medium |
| CN114325473B (en) * | 2021-12-24 | 2024-03-08 | 广州星际悦动股份有限公司 | Short circuit detection circuit, short circuit detection method, short circuit detection device, electronic equipment and storage medium |
| CN115078977A (en) * | 2022-06-30 | 2022-09-20 | 兰州理工大学 | Diagnosis and detection device for analog circuit |
| CN115078977B (en) * | 2022-06-30 | 2023-06-02 | 兰州理工大学 | Diagnostic test device for analog circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110233780B (en) | 2020-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106840637B (en) | Based on the GIS mechanical oscillation signal Time-Frequency Analysis Method for improving HHT algorithm | |
| CN110233780A (en) | A kind of computer network signal supervisory instrument | |
| CN204116216U (en) | Can to the optoacoustic spectroscopy gas-detecting device of quartz tuning-fork resonance frequency real time correction | |
| CN104316466A (en) | Photoacoustic spectrometry gas detection device capable of correcting resonant frequency of quartz tuning fork in real time | |
| CN209250655U (en) | A kind of the high speed code error tester and test macro of production test | |
| CN202939886U (en) | Simple capacitance and inductance measurement teaching instrument | |
| CN103901380B (en) | Calibration method and its calibrating installation | |
| CN105572617B (en) | A kind of calibration system and method for pulse power standard | |
| CN103293376A (en) | Frequency stability measuring method and device | |
| CN203299282U (en) | Grounding impedance tester | |
| CN107505361A (en) | Superelevation measurement accuracy capacitance-method soil moisture measuring instrument based on PHASE-LOCKED LOOP PLL TECHNIQUE | |
| CN109164298A (en) | A kind of compressed sensing based ultra harmonics detection device and detection method | |
| CN105760016B (en) | Touch panel and its driving method | |
| CN106353655A (en) | Characteristic pulse generating device for power cable partial discharge double-ended location as well as system and method thereof | |
| CN203587688U (en) | A frequency stability measurement apparatus | |
| CN201859177U (en) | Measurement module for low-frequency alternating current signal in relay protection device | |
| CN102201811B (en) | Method and device for reducing microwave power frequency shift of atomic frequency standard | |
| CN104426606B (en) | A kind of light coherent receiver time delay and phase difference method of testing and test system | |
| CN114325276A (en) | Automatic verification method and system for pattern recognition of partial discharge detection device | |
| CN207268720U (en) | Superelevation measurement accuracy capacitance-method soil moisture measuring instrument based on PHASE-LOCKED LOOP PLL TECHNIQUE | |
| CN103389270A (en) | Apparatus for measuring concentration of trace gas, and method thereof | |
| CN103983930A (en) | Electronic transformer harmonic calibrator calibration device and method | |
| CN206671525U (en) | The measure device of the harmonic wave degree of accuracy of electronic type voltage transformer | |
| CN106199270A (en) | A kind of measuring method of quartz-crystal resonator equivalent circuit parameter | |
| CN214893547U (en) | Resonant water depth sensor module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |