CN210431403U - Information retrieval early warning system - Google Patents
Information retrieval early warning system Download PDFInfo
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- CN210431403U CN210431403U CN201921507334.2U CN201921507334U CN210431403U CN 210431403 U CN210431403 U CN 210431403U CN 201921507334 U CN201921507334 U CN 201921507334U CN 210431403 U CN210431403 U CN 210431403U
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Abstract
The utility model discloses an information retrieval early warning system, including the information receiving circuit, signal conditioning circuit, frequency-selective circuit and abnormal signal protection circuit, the information receiving circuit is including the signal receiver E1 who is used for accepting wireless information signal, and send into the signal conditioning circuit after filtering received signal, signal conditioning circuit adopts fortune to put ware AR1, AR2 series connection mode cancellation signal imbalance, send into the computer after frequency-selective circuit filters the information at last, signal conditioning circuit's signal input part is connected to abnormal protection circuit's input, when the computer detects illegal information invasion, an input signal for controlling abnormal protection circuit truncation signal conditioning circuit, thereby the quick short circuit carries out to fortune ware AR1 homophase input end signal, cut off abnormal signal from the receiving terminal, thereby play fine defense effect.
Description
Technical Field
The utility model relates to a network security technical field especially relates to an information retrieval early warning system.
Background
With the gradual maturity of network technology, the network communication capacity is improved rapidly, the network big data is increased in a blowout mode, and the data collecting, processing and analyzing processes of signal information are simplified more and more. Signal intelligence includes intelligence derived from electronic signals, including communication intelligence (COMINT), electronic intelligence (ELINT), and external instrument signal intelligence (FIINT). The wireless communication equipment is used for acquiring the signal information, so that complex optical fiber laying is avoided, the wireless communication equipment has the advantages of convenience in expansion and low use rate, but the wireless signal information transmission is also easily interfered or subjected to error, and particularly is influenced more obviously when illegal information invasion is received.
So the utility model provides a new scheme to solve the problem.
SUMMERY OF THE UTILITY MODEL
To overcome the above-mentioned problems, an object of the present invention is to provide an information retrieval and early warning system.
The technical scheme for solving the problem is as follows: an intelligence retrieval early warning system comprises an intelligence receiving circuit, a signal regulating circuit, a frequency selecting circuit and an abnormal signal protection circuit, wherein the intelligence receiving circuit comprises a signal receiver E1 for receiving wireless intelligence signals, the received signals are filtered and then sent into the signal regulating circuit, the signal regulating circuit adopts series connection of an operational amplifier AR1 and an AR2 to eliminate signal imbalance, and finally, the frequency selecting circuit screens the intelligence and sends the intelligence into a computer; the input end of the abnormal protection circuit is connected with the signal input end of the signal regulating circuit, and when the computer detects illegal information invasion, the abnormal protection circuit is controlled to cut off the input signal of the signal regulating circuit.
Furthermore, the information receiving circuit comprises a capacitor C1, one end of a capacitor C1 is connected with the output end of a signal receiver E1, the other end of the capacitor C1 is connected with one ends of resistors R1 and R2 and the grid of a MOS tube Q1 through an inductor L1, the other end of the resistor R1 is connected with a +5V power supply, the other end of the resistor R2 is grounded, the drain of the MOS tube Q1 is connected with the +5V power supply through a resistor R3, and the source of the MOS tube Q1 is grounded through a resistor R4 and a capacitor C2 which are connected in parallel.
Further, a non-inverting input end of an operational amplifier AR1 in the signal conditioning circuit is connected to the drain of the MOS transistor Q1 through a capacitor C3, an output end of the operational amplifier AR1 is connected to a non-inverting input end of the operational amplifier AR2, an inverting input end and an output end of the operational amplifier AR2 are connected to an inverting input end of the operational amplifier AR1 and one end of a resistor R6 through a resistor R5, and the other end of the resistor R6 is grounded.
Furthermore, the frequency selection circuit comprises a resistor R9 and an inductor L2, one end of the resistor R9 and one end of the inductor L2 are connected with the output end of the operational amplifier AR1 through a resistor R8, and the other end of the resistor R9 and the other end of the inductor L2 are grounded through a capacitor C5 and connected with the signal receiving end of the computer through a capacitor C6.
Furthermore, the abnormal signal protection circuit comprises a triode VT1, the collector of the triode VT1 is connected with the non-inverting input end of the operational amplifier AR1, the base of the triode VT1 is connected with the instruction control end of the computer through a resistor R7 and is grounded through a capacitor C4, and the emitter of the triode VT1 is grounded.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the signal receiver E1 in the information receiving circuit applies reference voltage to the signal after receiving the wireless information signal, then the signal is input into the signal adjusting circuit after the RC noise reduction, the signal adjusting circuit adopts the series connection mode of the operational amplifier AR1 and AR2 to eliminate the signal imbalance, effectively avoids the imbalance of the information signal caused by the interference in the transmission process, and greatly improves the anti-interference performance of the information signal;
2. when the computer detects that illegal information invasion exists, a cut-off instruction is sent to the control end of the abnormal protection circuit, the base electrode of the triode VT1 is electrified and conducted, so that signals of the in-phase input end of the operational amplifier AR1 are quickly short-circuited, and abnormal signals are cut off from the source of the receiving end, and a good defense effect is achieved.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying fig. 1. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
An intelligence retrieval early warning system comprises an intelligence receiving circuit, a signal regulating circuit, a frequency selecting circuit and an abnormal signal protection circuit, wherein the intelligence receiving circuit comprises a signal receiver E1 for receiving wireless intelligence signals, the received signals are filtered and then sent into the signal regulating circuit, the signal regulating circuit adopts an operational amplifier AR1 and AR2 in series to eliminate signal imbalance, and finally, the intelligence is screened by the frequency selecting circuit and then sent into a computer. The input end of the abnormal protection circuit is connected with the signal input end of the signal regulating circuit, and when the computer detects illegal information invasion, the input end of the abnormal protection circuit is used for controlling the abnormal protection circuit to cut off the input signal of the signal regulating circuit. The abnormal signal protection circuit comprises a triode VT1, the collector of the triode VT1 is connected with the non-inverting input end of the operational amplifier AR1, the base of the triode VT1 is connected with the instruction control end of the computer through a resistor R7 and is grounded through a capacitor C4, and the emitter of the triode VT1 is grounded.
The signal receiver E1 sends the received information signal to the resonance circuit formed by the series connection of the capacitor C1 and the inductor L1 to output the required high frequency signal, then the resistance R1 and the resistance R2 divide the voltage of +5V by using the resistance voltage division principle to apply a reference voltage to the information signal, and then the information signal is sent to the MOS tube Q1 to be amplified, and simultaneously the resistance R4 and the capacitor C2 form RC filter to reduce the noise of the output signal of the MOS tube Q1, thereby ensuring the accurate transmission of the information signal. One end of a capacitor C1 in the information receiving circuit is connected with the output end of a signal receiver E1, the other end of a capacitor C1 is connected with one ends of resistors R1 and R2 and the grid of a MOS tube Q1 through an inductor L1, the other end of a resistor R1 is connected with a +5V power supply, the other end of the resistor R2 is grounded, the drain of a MOS tube Q1 is connected with the +5V power supply through a resistor R3, and the source of the MOS tube Q1 is grounded through a resistor R4 and a capacitor C2 which are connected in parallel.
The output signal of the MOS tube Q1 is coupled by a capacitor C3 and then sent to a signal regulating circuit for processing, the non-inverting input end of an operational amplifier AR1 in the signal regulating circuit is connected with the drain electrode of the MOS tube Q1 through the capacitor C3, the output end of the operational amplifier AR1 is connected with the non-inverting input end of an operational amplifier AR2, the inverting input end and the output end of the operational amplifier AR2 are connected with the inverting input end of an operational amplifier AR1 and one end of a resistor R6 through a resistor R5, and the other end of the resistor R6 is grounded. In order to avoid the imbalance phenomenon of the information signal due to the interference in the transmission, the operational amplifiers AR1 and AR2 condition the input signal in a series connection mode, that is: because the input signal of the non-inverting input end of the operational amplifier AR1 has offset voltage, the operational amplifier AR2 feeds back the output signal of the operational amplifier AR1 to the inverting input end of the AR1 in a voltage following compensation mode, and the resistors R5 and R6 divide the feedback voltage of the operational amplifier AR2, so that compensation voltage with the same amplitude as the offset voltage is obtained, the offset voltage is further offset, the conditioning of the information signal is finally completed, and the anti-interference performance of the information signal is greatly improved.
Because the intelligence wireless transmission has confidentiality, a specific frequency band is usually provided in the intelligence signal transmission process, and in order to ensure the accuracy and reliability of intelligence reception, a frequency selection circuit is adopted to process an output signal of the operational amplifier AR 1. The frequency selection circuit comprises a resistor R9 and an inductor L2, one end of the resistor R9 and one end of the inductor L2 are connected with the output end of the operational amplifier AR1 through the resistor R8, and the other ends of the resistor R9 and the inductor L2 are grounded through a capacitor C5 and are connected with a signal receiving end of the computer through a capacitor C6. The resistor R9, the inductor L1 and the capacitors C5 and C6 form an RC-LC second-order band-pass filter network, and the central frequency band of the RC-LC second-order band-pass filter network is consistent with the central frequency band of the information signals, so that the frequency selection effect on the input signals is achieved, and the information signals are guaranteed to be accurately transmitted to a computer.
The utility model discloses when specifically using, signal receiver E1 applys reference voltage to the signal after accepting wireless information signal among the information receiving circuit, then fall the back of making an uproar through the RC and input into signal conditioning circuit, signal conditioning circuit adopts the fortune to put ware AR1, AR2 series connection mode cancellation signal imbalance, effectively avoid the information signal to appear the imbalance because of receiving the interference in the transmission process, the interference immunity of information signal has greatly been improved, send into in the computer after the circuit is screened to the information through the frequency selection at last. The computer utilizes current big data analysis technique to carry out data analysis and screening to the information signal, and when the computer detected illegal information invasion, the instruction control end of computer sent and cut the instruction to the control end of unusual protection circuit, made triode VT1 base electrified conduction to the quick carries out the short circuit to fortune ware AR1 homophase input end signal, cuts off abnormal signal from the receiving terminal source, thereby plays fine defence effect.
The above description is provided for further details of the present invention with reference to the specific embodiments, which should not be construed as limiting the present invention; to the utility model discloses affiliated and relevant technical field's technical personnel are based on the utility model discloses under the technical scheme thinking prerequisite, the extension of doing and the replacement of operating method, data all should fall within the utility model discloses within the protection scope.
Claims (5)
1. An intelligence retrieval early warning system which characterized in that: the intelligent wireless intelligent monitoring system comprises an information receiving circuit, a signal regulating circuit, a frequency selecting circuit and an abnormal signal protection circuit, wherein the information receiving circuit comprises a signal receiver E1 for receiving wireless information signals, the received signals are filtered and then sent into the signal regulating circuit, the signal regulating circuit adopts series connection of an operational amplifier AR1 and an AR2 to eliminate signal imbalance, and finally information is screened by the frequency selecting circuit and then sent into a computer; the input end of the abnormal protection circuit is connected with the signal input end of the signal regulating circuit, and when the computer detects illegal information invasion, the abnormal protection circuit is controlled to cut off the input signal of the signal regulating circuit.
2. The intelligence retrieval warning system of claim 1, wherein: the intelligence receiving circuit comprises a capacitor C1, one end of a capacitor C1 is connected with the output end of a signal receiver E1, the other end of the capacitor C1 is connected with one ends of resistors R1 and R2 and the grid of an MOS transistor Q1 through an inductor L1, the other end of the resistor R1 is connected with a +5V power supply, the other end of the resistor R2 is grounded, the drain of the MOS transistor Q1 is connected with the +5V power supply through a resistor R3, and the source of the MOS transistor Q1 is grounded through a resistor R4 and a capacitor C2 which are connected in parallel.
3. The intelligence retrieval warning system of claim 2, wherein: the non-inverting input end of an operational amplifier AR1 in the signal regulating circuit is connected with the drain electrode of a MOS transistor Q1 through a capacitor C3, the output end of the operational amplifier AR1 is connected with the non-inverting input end of an operational amplifier AR2, the inverting input end and the output end of the operational amplifier AR2 are connected with the inverting input end of an operational amplifier AR1 and one end of a resistor R6 through a resistor R5, and the other end of the resistor R6 is grounded.
4. The intelligence retrieval warning system of claim 3, wherein: the frequency selection circuit comprises a resistor R9 and an inductor L2, one end of the resistor R9 and one end of the inductor L2 are connected with the output end of the operational amplifier AR1 through the resistor R8, and the other end of the resistor R9 and the other end of the inductor L2 are grounded through a capacitor C5 and are connected with a signal receiving end of a computer through a capacitor C6.
5. The intelligence retrieval warning system of claim 1, wherein: the abnormal signal protection circuit comprises a triode VT1, wherein the collector of the triode VT1 is connected with the non-inverting input end of an operational amplifier AR1, the base of the triode VT1 is connected with the instruction control end of a computer through a resistor R7 and is grounded through a capacitor C4, and the emitter of the triode VT1 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921507334.2U CN210431403U (en) | 2019-09-10 | 2019-09-10 | Information retrieval early warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921507334.2U CN210431403U (en) | 2019-09-10 | 2019-09-10 | Information retrieval early warning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210431403U true CN210431403U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921507334.2U Active CN210431403U (en) | 2019-09-10 | 2019-09-10 | Information retrieval early warning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210431403U (en) |
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2019
- 2019-09-10 CN CN201921507334.2U patent/CN210431403U/en active Active
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