CN110084073A - A kind of computer security risk control system - Google Patents
A kind of computer security risk control system Download PDFInfo
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- CN110084073A CN110084073A CN201910257455.4A CN201910257455A CN110084073A CN 110084073 A CN110084073 A CN 110084073A CN 201910257455 A CN201910257455 A CN 201910257455A CN 110084073 A CN110084073 A CN 110084073A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
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Abstract
The invention discloses a kind of computer security risk control systems, including frequency collection circuit, feedback calibration circuit and frequency-selecting compensation circuit, controlling terminal receives signal of the analog signal in signal transmission passage input terminal in the frequency collection circuit collecting computer security risk control system, the feedback calibration circuit uses triode Q1 and capacitor C2, capacitor C3 forms FM circuit to signal frequency modulation, triode Q2 and inductance L1 is used simultaneously, inductance L2 and capacitor C6, capacitor C7 forms modulation circuit to signal amplitude modulation, finally use triode Q4, it is inputted in frequency-selecting compensation circuit after triode Q5 and capacitor C9 composition constant-current source circuit pressure stabilizing, last frequency-selecting compensation circuit filters out single-frequency with resistance R16- resistance R18 and capacitor C12- capacitor C14 composition frequency selection circuit Signal output, the signal automatic frequency adjustment that can be received in analog signal signal transmission passage input terminal to controlling terminal in computer security risk control system are calibrated, and signal errors is reduced.
Description
Technical field
The present invention relates to field of circuit technology, more particularly to a kind of computer security risk control system.
Background technique
With the continuous development of science and technology, computer is more and more important, it may be said that computer has become many equipment
Core, computer internal operation are that the procedure auto-control finished in advance according to people carries out, and industrial personal computer is a kind of using total
Cable architecture carries out the computer system general name of Detection & Controling, computer to production process and its electromechanical equipment, technological equipment
The quality of energy directly decides the runnability of relevant device, it is therefore desirable to computer security risk control, computer security
Risk control system is exactly specially to be monitored control to operation of computer itself, ensures that computer operation conditions is good, so
And in practical application, controlling terminal receives analog signal and is inputted with signal transmission passage in computer security risk control system
Signal in end also will appear failure in transmission process, causes signal frequency hopping, relaxation phenomenon often occur, makes computer security
The received analog signal of controlling terminal exceeds signal errors range in risk control system, leads to computer security risk control system
System makees the analysis or instruction to make mistake, causes unthinkable loss.
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 security
Risk control system, have be skillfully constructed, the characteristic of human oriented design, can be to being controlled in computer security risk control system
Terminal processed receives analog signal and is calibrated with the signal automatic frequency adjustment in signal transmission passage input terminal, anti-stop signal occur frequency hopping,
Relaxation phenomenon reduces signal errors.
Its technical solution solved is a kind of computer security risk control system, including frequency collection circuit, feedback school
Quasi- circuit and frequency-selecting compensation circuit, controlling terminal receives in the frequency collection circuit collecting computer security risk control system
Signal of the analog signal in signal transmission passage input terminal forms clamp circuit for signal with diode D2, diode D3
It is limited in output in 0-+5V, the feedback calibration circuit is with triode Q1 and capacitor C2, capacitor C3 composition FM circuit to letter
Number frequency modulation, while with triode Q2 and inductance L1, inductance L2 and capacitor C6, capacitor C7 composition modulation circuit to signal tune
Width inputs in frequency-selecting compensation circuit after finally forming constant-current source circuit pressure stabilizing with triode Q4, triode Q5 and capacitor C9, is
Detection constant-current source circuit output signal is filtered out with triode Q3 and silicon-controlled VTL1, voltage-stabiliser tube D5 composition compound circuit
Abnormal signal is fed back at triode Q2 collector, adjusts modulation circuit output signal amplitude, and last frequency-selecting compensation circuit is used
Resistance R16- resistance R18 and capacitor C12- capacitor C14 composition frequency selection circuit filter out single-frequency signal output, that is to say for
Controlling terminal receives the compensation letter of analog signal signal transmission passage input end signal in computer security risk control system
Number；
The feedback calibration circuit includes triode Q1, and the base stage of triode Q1 connects one end of capacitor C2, the current collection of triode Q1
One end of pole connecting resistance R3, capacitor C4, one end of the emitter connecting resistance R4 of triode Q1, resistance R5, the other end of resistance R4
Connect the other end of capacitor C2 and one end of capacitor C3, the other end ground connection of resistance R5, capacitor C3, another termination power of resistance R3
The base stage of another termination triode Q2 of+5V, capacitor C4, one end of the emitter connecting resistance R6 of triode Q2, capacitor C5, resistance
The other end ground connection of R6, capacitor C5, the collector of triode Q2 meet inductance L1, resistance C7, one end of resistance R11 and diode D4
Cathode, resistance R11 the other end ground connection, one end of another terminating resistor R7 of inductance L1, resistance R7 the other end ground connection, electricity
Hold one end of another termination inductance L2 of C7, capacitor C6, another terminating resistor R22 of inductance L2, resistance R8, resistance R10 one
The one end at end and capacitor C9, the other end ground connection of resistance R22, capacitor C6, the emitter of another termination triode Q4 of resistance R8,
The anode of another terminating diode D7 of resistance R10, the base stage of triode Q4 connect the cathode of diode D7 and the collection of triode Q5
Electrode, the base stage of triode Q5 meet the other end of the collector of triode Q4 and the cathode of voltage-stabiliser tube D6, capacitor C9, triode Q5
Emitter connecting resistance R9 one end, another termination voltage-stabiliser tube D6 of resistance R9 anode and voltage-stabiliser tube D8 cathode and electricity
Hinder one end of R14, capacitor C8, the other end ground connection of capacitor C8, the collector and resistance of another termination triode Q3 of resistance R14
One end of R15, another termination power+5V of resistance R15, the base stage of triode Q3 connect the anode of voltage-stabiliser tube D8, triode Q3's
Emitter connects the cathode of voltage-stabiliser tube D5 and the anode of silicon-controlled VTL1, one end of the cathode connecting resistance R13 of silicon-controlled VTL1, resistance
One end of another termination capacitor C11 of R13, the other end ground connection of capacitor C11, control electrode connecting resistance R12, the electricity of silicon-controlled VTL1
Hold C10 one end and voltage-stabiliser tube D5 anode, resistance R12, capacitor C10 another terminating diode D4 anode.
Due to the use of above technical scheme, the present invention has the following advantages that compared with prior art；
1, with triode Q1 and capacitor C2, capacitor C3 composition FM circuit to signal frequency modulation, capacitor C2, capacitor C3 are bypass electricity
Hold, filter out high-frequency signal noise, capacitor C4 is decoupling capacitor, filters out low frequency signal noise, and anti-stop signal frequency hopping guarantees signal frequency
The stabilization of rate, while with triode Q2 and inductance L1, inductance L2 and capacitor C6, capacitor C7 composition modulation circuit to signal tune
Width improves signal amplitude with triode Q2 amplifying triode property, and capacitor C6 is charge and discharge, guarantees the consistent of signal amplitude
Property, it realizes that the amplitude modulation to signal acts on, is inputted after forming constant-current source circuit pressure stabilizing with triode Q4, triode Q5 and capacitor C9
In frequency-selecting compensation circuit, stablizes triode Q5 base stage, triode Q4 collector potential with voltage-stabiliser tube D6, that is to say and stablize three poles
Pipe Q5 emitter potential guarantees constant-current source circuit stable output signal, since signal is easy to transmitting signal after frequency modulation, amplitude modulation
It is unstable, it can guarantee signal frequency, the consistency of amplitude, stabilization signal quiescent operation after adjusting with constant-current source circuit pressure stabilizing
Point；
2. being formed to further detect constant-current source circuit output signal with triode Q3 and silicon-controlled VTL1, voltage-stabiliser tube D5
Compound circuit filters out abnormal signal and feeds back at triode Q2 collector, when signal is abnormal signal, abnormal signal at this time
Current potential triggers silicon-controlled VTL1 conducting, feedback signal to triode Q2 collector potential, and realization further adjusts amplitude modulation to signal
Circuit output signal amplitude ensure that thermal compensation signal and source signal consistency, with resistance R16- resistance R18 and capacitor
C12- capacitor C14 composition frequency selection circuit filters out the signal output of single-frequency, guarantees the stabilization of the frequency of thermal compensation signal, prevents
Signal frequency hopping, that is to say in computer security risk control system controlling terminal receive analog signal signal transmission passage it is defeated
The thermal compensation signal for entering end signal guarantees the stabilization of signal transmission by way of thermal compensation signal, reduces signal errors.
Detailed description of the invention
Fig. 1 is a kind of module map of computer security risk control system of the present invention.
Fig. 2 is a kind of schematic diagram of computer security risk control 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.
Embodiment one, a kind of computer security risk control system, including frequency collection circuit, feedback calibration circuit and choosing
Frequency compensation circuit, controlling terminal receives analog signal and uses in the frequency collection circuit collecting computer security risk control system
Signal is limited in 0-+5V with diode D2, diode D3 composition clamp circuit by the signal in signal transmission passage input terminal
Interior output, the feedback calibration circuit form FM circuit to signal frequency modulation, simultaneously with triode Q1 and capacitor C2, capacitor C3
With triode Q2 and inductance L1, inductance L2 and capacitor C6, capacitor C7 composition modulation circuit to signal amplitude modulation, three are finally used
It is inputted in frequency-selecting compensation circuit after pole pipe Q4, triode Q5 and capacitor C9 composition constant-current source circuit pressure stabilizing, in order to detect constant-current source
Circuit output signal filters out abnormal signal feedback with triode Q3 and silicon-controlled VTL1, voltage-stabiliser tube D5 composition compound circuit
To triode Q2 collector, modulation circuit output signal amplitude is adjusted, last frequency-selecting compensation circuit uses resistance R16- resistance
R18 and capacitor C12- capacitor C14 composition frequency selection circuit filters out the signal output of single-frequency, that is to say as computer security wind
Controlling terminal receives the thermal compensation signal of analog signal signal transmission passage input end signal in dangerous control system；
The feedback calibration circuit with triode Q1 and capacitor C2, capacitor C3 composition FM circuit to signal frequency modulation, capacitor C2,
Capacitor C3 is shunt capacitance, filters out high-frequency signal noise, and capacitor C4 is decoupling capacitor, filters out low frequency signal noise, anti-stop signal
Frequency hopping guarantees the stabilization of signal frequency, while with triode Q2 and inductance L1, inductance L2 and capacitor C6, capacitor C7 composition
Modulation circuit improves signal amplitude with triode Q2 amplifying triode property to signal amplitude modulation, and capacitor C6 is charge and discharge, is protected
The consistency of signal amplitude is demonstrate,proved, realizes that the amplitude modulation to signal acts on, inductance L1, inductance L2 and capacitor C7 filter out miscellaneous in signal
Wave is transported finally with inputting in frequency-selecting compensation circuit after triode Q4, triode Q5 and capacitor C9 composition constant-current source circuit pressure stabilizing
Stablize triode Q5 base stage, triode Q4 collector potential with voltage-stabiliser tube D6, that is to say stable triode Q5 emitter potential, protects
Constant-current source circuit stable output signal is demonstrate,proved, since signal is easy to transmitting jitter after frequency modulation, amplitude modulation, with constant-current source
Circuit pressure stabilizing can guarantee signal frequency, the consistency of amplitude, stabilization signal quiescent point, in order to further detect after adjusting
Constant-current source circuit output signal filters out abnormal letter with triode Q3 and silicon-controlled VTL1, voltage-stabiliser tube D5 composition compound circuit
It number feeds back at triode Q2 collector, when signal is abnormal signal, abnormal signal current potential triggers silicon-controlled VTL1 and leads at this time
Logical, feedback signal to triode Q2 collector potential, realization further adjusts modulation circuit output signal amplitude to signal, guarantees
Thermal compensation signal and source signal consistency；
The feedback calibration circuit specific structure, the base stage of triode Q1 connect one end of capacitor C2, and the collector of triode Q1 connects
One end of resistance R3, capacitor C4, one end of the emitter connecting resistance R4 of triode Q1, resistance R5, another termination electricity of resistance R4
The other end of appearance C2 and one end of capacitor C3, the other end ground connection of resistance R5, capacitor C3, another termination power+5V of resistance R3,
The base stage of another termination triode Q2 of capacitor C4, one end of the emitter connecting resistance R6 of triode Q2, capacitor C5, resistance R6,
The other end of capacitor C5 is grounded, and the collector of triode Q2 meets inductance L1, resistance C7, one end of resistance R11 and diode D4
Cathode, the other end ground connection of resistance R11, one end of another terminating resistor R7 of inductance L1, the other end ground connection of resistance R7, capacitor
One end of another termination inductance L2 of C7, capacitor C6, one end of another terminating resistor R22 of inductance L2, resistance R8, resistance R10
With one end of capacitor C9, the other end ground connection of resistance R22, capacitor C6, the emitter of another termination triode Q4 of resistance R8, electricity
The anode of another terminating diode D7 of R10 is hindered, the base stage of triode Q4 connects the cathode of diode D7 and the current collection of triode Q5
Pole, the base stage of triode Q5 connect the other end of the collector of triode Q4 and the cathode of voltage-stabiliser tube D6, capacitor C9, triode Q5's
One end of emitter connecting resistance R9, the anode of another termination voltage-stabiliser tube D6 of resistance R9 and the cathode and resistance of voltage-stabiliser tube D8
One end of R14, capacitor C8, the other end ground connection of capacitor C8, the collector and resistance of another termination triode Q3 of resistance R14
One end of R15, another termination power+5V of resistance R15, the base stage of triode Q3 connect the anode of voltage-stabiliser tube D8, triode Q3's
Emitter connects the cathode of voltage-stabiliser tube D5 and the anode of silicon-controlled VTL1, one end of the cathode connecting resistance R13 of silicon-controlled VTL1, resistance
One end of another termination capacitor C11 of R13, the other end ground connection of capacitor C11, control electrode connecting resistance R12, the electricity of silicon-controlled VTL1
Hold C10 one end and voltage-stabiliser tube D5 anode, resistance R12, capacitor C10 another terminating diode D4 anode.
Embodiment two, on the basis of example 1, the frequency-selecting compensation circuit use resistance R16- resistance R18 and capacitor
C12- capacitor C14 composition frequency selection circuit filters out the signal output of single-frequency, guarantees the stabilization of the frequency of thermal compensation signal, prevents
Signal frequency hopping, that is to say in computer security risk control system controlling terminal receive analog signal signal transmission passage it is defeated
The thermal compensation signal for entering end signal guarantees the stabilization of signal transmission by way of thermal compensation signal, reduces signal errors, resistance R16
A termination voltage-stabiliser tube D6 anode and capacitor C12 one end, one end of another terminating resistor R17 of resistance R16, capacitor C14,
One end of another terminating resistor R19 of resistance R17, capacitor C13, one end of another terminating resistor R18 of capacitor C12 and capacitor
The other end of C13, the other end ground connection of resistance R18, capacitor C14, another termination signal output port of resistance R19.
Embodiment three, on the basis of example 1, the frequency collection circuit select the frequency of model SJ-ADC to adopt
Controlling terminal receives analog signal in signal transmission passage input terminal in storage J1 collecting computer security risk control system
Signal, signal be limited in 0-+5V export with diode D2, diode D3 composition clamp circuit, anti-stop signal exceeds
The adjustable range of this circuit, the cathode of the power supply terminating resistor R1 of frequency collection device J1, one end of capacitor C1 and diode D2 with
And power supply+5V, frequency collection device J1 ground terminal ground connection, frequency collection device J1 output terminating resistor R1, capacitor C1 it is another
The anode of the one end at end and resistance R2, the cathode of another termination voltage-stabiliser tube D1 of resistance R2 and diode D2, diode D3 it is negative
The base stage of pole and triode Q1, the plus earth of diode D3.
When the present invention is specifically used, a kind of computer security risk control system, including frequency collection circuit, feedback calibration
Circuit and frequency-selecting compensation circuit, which is characterized in that controlled in the frequency collection circuit collecting computer security risk control system
Terminal processed receives signal of the analog signal in signal transmission passage input terminal, forms clamper with diode D2, diode D3
Signal is limited in 0-+5V and exports by circuit, and the feedback calibration circuit is adjusted with triode Q1 and capacitor C2, capacitor C3 composition
For frequency circuit to signal frequency modulation, capacitor C2, capacitor C3 are shunt capacitance, filter out high-frequency signal noise, and capacitor C4 is decoupling capacitor, filter
Except low frequency signal noise, anti-stop signal frequency hopping guarantees the stabilization of signal frequency, while using triode Q2 and inductance L1, inductance
L2 and capacitor C6, capacitor C7 form modulation circuit and improve signal with triode Q2 amplifying triode property to signal amplitude modulation
Amplitude, capacitor C6 are charge and discharge, guarantee the consistency of signal amplitude, realize that the amplitude modulation to signal acts on, inductance L1, inductance L2 and
Capacitor C7 filters out the clutter in signal, after finally forming constant-current source circuit pressure stabilizing with triode Q4, triode Q5 and capacitor C9
It inputs in frequency-selecting compensation circuit, stablizes triode Q5 base stage, triode Q4 collector potential with voltage-stabiliser tube D6, that is to say stabilization
Triode Q5 emitter potential guarantees constant-current source circuit stable output signal, since signal is easy to emit after frequency modulation, amplitude modulation
Jitter, can guarantee signal frequency, the consistency of amplitude after adjusting with constant-current source circuit pressure stabilizing, stabilization signal is static
Operating point forms to further detect constant-current source circuit output signal with triode Q3 and silicon-controlled VTL1, voltage-stabiliser tube D5
Compound circuit filters out abnormal signal and feeds back at triode Q2 collector, when signal is abnormal signal, abnormal signal at this time
Current potential triggers silicon-controlled VTL1 conducting, feedback signal to triode Q2 collector potential, and realization further adjusts amplitude modulation to signal
Circuit output signal amplitude ensure that thermal compensation signal and source signal consistency, last frequency-selecting compensation circuit use resistance
R16- resistance R18 and capacitor C12- capacitor C14 composition frequency selection circuit filters out the signal output of single-frequency, that is to say to calculate
Controlling terminal receives the thermal compensation signal of analog signal signal transmission passage input end signal in machine security risk control system.
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 computer security risk control system, including frequency collection circuit, feedback calibration circuit and frequency-selecting compensation circuit,
It is characterized in that, controlling terminal receives analog signal use in the frequency collection circuit collecting computer security risk control system
Signal is limited in 0-+5V with diode D2, diode D3 composition clamp circuit by the signal in signal transmission passage input terminal
Interior output, the feedback calibration circuit form FM circuit to signal frequency modulation, simultaneously with triode Q1 and capacitor C2, capacitor C3
With triode Q2 and inductance L1, inductance L2 and capacitor C6, capacitor C7 composition modulation circuit to signal amplitude modulation, three are finally used
It is inputted in frequency-selecting compensation circuit after pole pipe Q4, triode Q5 and capacitor C9 composition constant-current source circuit pressure stabilizing, in order to detect constant-current source
Circuit output signal filters out abnormal signal feedback with triode Q3 and silicon-controlled VTL1, voltage-stabiliser tube D5 composition compound circuit
To triode Q2 collector, modulation circuit output signal amplitude is adjusted, last frequency-selecting compensation circuit uses resistance R16- resistance
R18 and capacitor C12- capacitor C14 composition frequency selection circuit filters out the signal output of single-frequency, that is to say as computer security wind
Controlling terminal receives the thermal compensation signal of analog signal signal transmission passage input end signal in dangerous control system；
The feedback calibration circuit includes triode Q1, and the base stage of triode Q1 connects one end of capacitor C2, the current collection of triode Q1
One end of pole connecting resistance R3, capacitor C4, one end of the emitter connecting resistance R4 of triode Q1, resistance R5, the other end of resistance R4
Connect the other end of capacitor C2 and one end of capacitor C3, the other end ground connection of resistance R5, capacitor C3, another termination power of resistance R3
The base stage of another termination triode Q2 of+5V, capacitor C4, one end of the emitter connecting resistance R6 of triode Q2, capacitor C5, resistance
The other end ground connection of R6, capacitor C5, the collector of triode Q2 meet inductance L1, resistance C7, one end of resistance R11 and diode D4
Cathode, resistance R11 the other end ground connection, one end of another terminating resistor R7 of inductance L1, resistance R7 the other end ground connection, electricity
Hold one end of another termination inductance L2 of C7, capacitor C6, another terminating resistor R22 of inductance L2, resistance R8, resistance R10 one
The one end at end and capacitor C9, the other end ground connection of resistance R22, capacitor C6, the emitter of another termination triode Q4 of resistance R8,
The anode of another terminating diode D7 of resistance R10, the base stage of triode Q4 connect the cathode of diode D7 and the collection of triode Q5
Electrode, the base stage of triode Q5 meet the other end of the collector of triode Q4 and the cathode of voltage-stabiliser tube D6, capacitor C9, triode Q5
Emitter connecting resistance R9 one end, another termination voltage-stabiliser tube D6 of resistance R9 anode and voltage-stabiliser tube D8 cathode and electricity
Hinder one end of R14, capacitor C8, the other end ground connection of capacitor C8, the collector and resistance of another termination triode Q3 of resistance R14
One end of R15, another termination power+5V of resistance R15, the base stage of triode Q3 connect the anode of voltage-stabiliser tube D8, triode Q3's
Emitter connects the cathode of voltage-stabiliser tube D5 and the anode of silicon-controlled VTL1, one end of the cathode connecting resistance R13 of silicon-controlled VTL1, resistance
One end of another termination capacitor C11 of R13, the other end ground connection of capacitor C11, control electrode connecting resistance R12, the electricity of silicon-controlled VTL1
Hold C10 one end and voltage-stabiliser tube D5 anode, resistance R12, capacitor C10 another terminating diode D4 anode.
2. a kind of computer security risk control system as described in claim 1, which is characterized in that the frequency-selecting compensation circuit packet
Include resistance R16, the anode of a termination voltage-stabiliser tube D6 of resistance R16 and one end of capacitor C12, another terminating resistor of resistance R16
One end of R17, capacitor C14, one end of another terminating resistor R19 of resistance R17, capacitor C13, another termination electricity of capacitor C12
Hinder one end of R18 and the other end of capacitor C13, the other end ground connection of resistance R18, capacitor C14, another termination letter of resistance R19
Number output port.
3. a kind of computer security risk control system as described in claim 1, which is characterized in that the frequency collection circuit packet
Include the frequency collection device J1 of model SJ-ADC, one end and two poles of the power supply terminating resistor R1 of frequency collection device J1, capacitor C1
The cathode and power supply+5V of pipe D2, the ground terminal ground connection of frequency collection device J1, the output terminating resistor R1 of frequency collection device J1,
The anode of the other end of capacitor C1 and one end of resistance R2, the cathode of another termination voltage-stabiliser tube D1 of resistance R2 and diode D2,
The cathode of diode D3 and the base stage of triode Q1, the plus earth of diode D3.
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| CN201910257455.4A CN110084073B (en) | 2019-04-01 | 2019-04-01 | Computer security risk control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910257455.4A CN110084073B (en) | 2019-04-01 | 2019-04-01 | Computer security risk control system |
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| CN110084073B CN110084073B (en) | 2020-01-24 |
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Cited By (1)
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| CN111817737A (en) * | 2020-07-30 | 2020-10-23 | 黄河水利职业技术学院 | Signal frequency control circuit of radio communication system |
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| CN110084073B (en) | 2020-01-24 |
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