CN108900219B - Network public opinion information early warning system - Google Patents
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- CN108900219B CN108900219B CN201811159550.2A CN201811159550A CN108900219B CN 108900219 B CN108900219 B CN 108900219B CN 201811159550 A CN201811159550 A CN 201811159550A CN 108900219 B CN108900219 B CN 108900219B
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- 239000003990 capacitor Substances 0.000 claims abstract description 104
- 230000008054 signal transmission Effects 0.000 claims abstract description 12
- 230000002159 abnormal effect Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims 4
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 6
- 230000001960 triggered effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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Abstract
The invention discloses a network public opinion information early warning system, which comprises a signal receiving circuit, a frequency modulation and amplitude modulation circuit and a signal output circuit, wherein the signal receiving circuit receives signals at the input end of a signal transmission channel for a remote control terminal of the network public opinion information early warning system, the frequency modulation and amplitude modulation circuit receives signals output by the signal receiving circuit in two paths, one path of the signals is modulated by the frequency modulation circuit consisting of a triode Q2, a triode Q4, a capacitor C6 and a capacitor C10, the other path of the signals are modulated by the amplitude modulation and filter circuit consisting of a diode D3, a capacitor C5, a capacitor C9 and a resistor R11, an operational amplifier AR3 and a triode Q5 are designed to feed back signals into the frequency modulation circuit, the frequency of the signals output by the frequency modulation circuit is regulated, and finally the signal output circuit uses a double T frequency selection circuit consisting of resistors R16-R18 and capacitors C10-C12 to screen out single frequency signals in the signals, so that the signals can be automatically calibrated and alarm in time.
Description
Technical Field
The invention relates to the technical field of circuits, in particular to a network public opinion information early warning system.
Background
With the rapid development of the internet, network media is a new information transmission form, and is deep in people's daily lives. The internet friends are active to the unprecedented degree, no matter in China or international major events, the internet public opinion can be formed immediately, the opinion and the transmission thought can be expressed through the network, and huge public opinion pressure can be generated, the aim of non-neglecting by any department and institution is achieved, the internet public opinion is the opinion and the opinion which are transmitted through the internet and have strong influence and tendency on some hot spots and focus problems in real life, and the internet public opinion is mainly realized and enhanced through BBS forums, blogs, news follow-up (postings), transfer-up and the like. Therefore, the network public opinion information monitoring system is developed, the network public opinion information is monitored at any time, real-time screening is needed in the monitoring process due to the large number of network public opinion information, the network public opinion information monitoring system also needs the network public opinion information early warning system to perform early warning monitoring, the system is prevented from being invaded, the abnormality of the network public opinion information monitoring system can be monitored in real time, and when the network public opinion information monitoring system is abnormal, the most direct expression is that the signal in the signal transmission channel of the network public opinion information remote control terminal is abnormal, so that the whole system is disordered.
The present invention provides a new solution to this problem.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention aims to provide the network public opinion information early warning system which has the characteristics of ingenious conception and humanized design, detects signals in a signal transmission channel for a remote control terminal in the network public opinion information early warning system in real time, and can automatically calibrate the signals and give an alarm in time.
The network public opinion information early warning system comprises a signal receiving circuit, a frequency modulation and amplitude modulation circuit and a signal output circuit, wherein the signal receiving circuit receives signals of an input end of a signal transmission channel for a remote control terminal of the network public opinion information early warning system, abnormal signals are completely discharged to the ground through a detection circuit formed by a triode Q1, a triode VTL1, a capacitor C2 and a capacitor C3, the frequency modulation and amplitude modulation circuit is divided into two paths for receiving signals, one path of signals is used for receiving signals and outputting signals through a frequency modulation circuit formed by a triode Q2, a triode Q4, a capacitor C6 and a capacitor C8, the other path of signals are subjected to frequency modulation through a frequency modulation filter circuit formed by a diode D3, a capacitor C5, a capacitor C9 and a resistor R11, feedback signals are simultaneously designed to the frequency modulation circuit, the frequency of the signals output by the frequency modulation circuit is adjusted, when the triode Q3 and the triode Q5 are conducted, an alarm signal is triggered to be sent to the network public opinion information system through the alarm signal transmitter E1, and finally, the signal output by the signal output circuit is formed by the capacitor C12, the resistor R16, the resistor C18 and the capacitor C11, and the remote public opinion information system is also used for controlling the frequency of the signal output of the network public opinion information system, and the signal is transmitted through the capacitor C11;
the frequency modulation amplitude modulation circuit comprises a triode Q2, wherein the base electrode of the triode Q2 is connected with a resistor R7 and one end of a capacitor C4, the other end of the resistor R7 is grounded, the other end of the capacitor C4 is connected with the collector electrode of the triode Q2, one end of the collector electrode of the triode Q4 and one end of the capacitor C7 and the positive electrode of a diode D3, the emitter electrode of the triode Q2 is connected with a resistor R8 and one end of a capacitor C6, the base electrode of the triode Q4 is connected with one end of an operational amplifier AR3, the positive electrode of a diode D5 and the emitter electrode of the triode Q3, the negative electrode of the triode Q4 and the base electrode of the diode D5 are connected with the same phase input end of an operational amplifier AR2, the other end of the capacitor C8 is connected with the other end of the capacitor C8, the other end of the capacitor C6, the other end of the resistor R9 and the other end of the resistor R10 are grounded, the negative electrode of the diode D3 is connected with the capacitor C9 and the other end of the capacitor C5, the other end of the resistor R11 and the other end of the resistor R3 are connected with the other end of the resistor R3 and the resistor R3, the other end of the resistor R5 and the other end of the resistor R3 is connected with the positive electrode of the resistor R3 and the resistor R3 is connected with the other end of the resistor C3, the other end of the resistor R2 is connected with the other end of the resistor C3 and the resistor C3 is connected with the other end of the positive end of the resistor C3, the other end of the resistor is connected with the resistor C3 and the other end of the resistor is connected with the other end of the resistor C2.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. the frequency modulation circuit composed of the triode Q2, the triode Q4, the capacitor C6 and the capacitor C10 modulates the frequency, the triode Q2 and the triode Q4 share the collector, when the frequency is overlarge, the potential of the emitting electrode of the triode Q2 is reduced, the collector of the triode Q4 is conducted at the moment, the emitting electrode frequency of the triode Q4 is reduced, when the frequency is too low, the triode Q2 is not conducted, the triode Q4 is conducted, and the emitting electrode frequency of the triode Q4 is increased at the moment, so that the effect of calibrating the signal frequency is achieved;
2. the amplitude modulation filter circuit composed of the diode D3, the capacitor C5, the capacitor C9 and the resistor R11 modulates the amplitude of signals, wherein the triode Q3 plays a role in feedback regulation of the output signal potential of the operational amplifier AR1, meanwhile, feedback signals of the operational amplifier AR3 and the triode Q5 are designed into the frequency modulation circuit, the output signal frequency value of the frequency modulation circuit is regulated, when the output signal of the operational amplifier AR2 is abnormal, the triode Q5 is conducted, the output signal of the operational amplifier AR3 is fed back into the triode Q4 at the moment, the effect of reducing the frequency value of the output signal of the frequency modulation circuit is achieved, when the triode Q3 and the triode Q5 are conducted, namely, when the signal is abnormal, the alarm signal emitter E1 is triggered to send an alarm signal into a remote control terminal of the network public opinion information alarm system for alarm, automatic calibration of the signal can be achieved, and the alarm can be timely carried out.
Drawings
Fig. 1 is a block diagram of an online public opinion information early warning system according to the present invention.
Fig. 2 is a schematic diagram of an online public opinion information early warning system according to the present invention.
Detailed Description
The foregoing and other features, aspects and advantages of the present invention will become more apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying figures 1-2. The following embodiments are described in detail with reference to the drawings.
The first embodiment of the invention is a network public opinion information early warning system, which comprises a signal receiving circuit, a frequency modulation and amplitude modulation circuit and a signal output circuit, wherein the signal receiving circuit receives a signal at the input end of a signal transmission channel for a remote control terminal of the network public opinion information early warning system, abnormal signals are completely discharged to the ground through a detection circuit formed by a triode Q1, a triode VTL1, a capacitor C2 and a capacitor C3, the frequency modulation and amplitude modulation circuit outputs signals in two paths, one path of the signal is subjected to frequency modulation through a frequency modulation circuit formed by a triode Q2, a triode Q4, a capacitor C6 and a capacitor C8, the other path of the signal is subjected to frequency modulation through an amplitude modulation filter circuit formed by a diode D3, a capacitor C5, a capacitor C9 and a resistor R11, and simultaneously, an operational amplifier AR3 and a triode Q5 feedback signal are designed to the frequency modulation circuit, the output signal frequency of the frequency modulation circuit is adjusted, wherein when the triode Q3 and the triode Q5 are conducted, a trigger signal transmitter E1 sends alarm signals to the remote control terminal of the network public opinion information early warning system, and finally the signal output circuit outputs signals in the network public opinion information early warning system through the single frequency modulation circuit formed by the resistor R16, the resistor R17, the resistor R18 and the capacitor C10 and the capacitor C11, and the remote control terminal of the network public opinion information signal is also subjected to frequency selection by the network public opinion information signal, and the signal output terminal is subjected to the remote control system, and the signal has the frequency of the signal transmission channel;
the frequency modulation and amplitude modulation circuit is divided into two paths for receiving signals output by the signal receiving circuit, one path is modulated by a frequency modulation circuit formed by a triode Q2, a triode Q4, a capacitor C6 and a capacitor C10, the triode Q2 and the triode Q4 share a collector, when the frequency is overlarge, the output potential of the emitting electrode of the triode Q2 is reduced, the collector of the triode Q4 is conducted at the moment, the frequency of the emitting electrode of the triode Q4 is reduced, when the frequency is too low, the triode Q2 is not conducted, the triode Q4 is conducted, the frequency of the emitting electrode of the triode Q4 is increased at the moment, the effect of calibrating the signal frequency is achieved, the other path is modulated by an amplitude modulation filter circuit formed by a diode D3, a capacitor C5, a capacitor C9 and a resistor R11, the effect of feedback regulating the output signal potential of the operational amplifier AR1 is achieved by the triode Q3 and the triode Q5, the signal is fed back into the frequency modulation circuit is designed at the same time, the signal frequency value of the output signal of the frequency modulation circuit is regulated, when the output signal of the operational amplifier AR2 is abnormal, the triode Q5 is conducted, the output signal of the operational amplifier AR3 is fed back into the triode Q4 at the moment, the effect of reducing the frequency value of the output signal of the frequency modulation circuit is achieved, when the triode Q3 and the triode Q5 are conducted, namely when the signal is abnormal, the early warning signal transmitter E1 is triggered to send an alarm signal to a remote control terminal of the network public opinion information early warning system for alarming, the base electrode of the triode Q2 is connected with one end of a resistor R7 and one end of a capacitor C4, the other end of the resistor R7 is grounded, the other end of the capacitor C4 is connected with the collector electrode of the triode Q2, one end of the collector electrode of the triode Q4 and one end of the capacitor C7 and the positive electrode of a diode D3, the emitter electrode of the triode Q2 is connected with one end of a resistor R8 and one end of a capacitor C6, the base electrode of the triode Q4 is connected with one end of a resistor R9, one end of a resistor R14 and the output end of the operational amplifier AR3, the positive electrode of the diode D5 and the emitting electrode of the triode Q3, the emitter of the triode Q4 is connected with one end of a resistor R10 and the collector of the triode Q3, the cathode of a diode D4 and the base of a diode D5, the in-phase input end of an operational amplifier AR2, the other end of a capacitor C7 is connected with one end of a capacitor C8, the other end of a capacitor C6, the other end of a resistor R8, the other end of a resistor R9 and the other end of a resistor R10 are grounded, the cathode of the diode D3 is connected with the capacitor C5, one end of the capacitor C9 and one end of a resistor R11, the other ends of the capacitor C5 and the resistor R11 are grounded, the other ends of the capacitor C9 are connected with the base of the triode Q3 and the anode of the diode D4, the cathode of the diode D5 is connected with an early warning signal emitter E1, the inverting input end of the operational amplifier AR2 is connected with one end of a resistor R12, the other end of a resistor R13 is grounded, the other end of the resistor R13 is connected with the output end of the operational amplifier AR2 and the emitter of the triode Q5, the in-phase input end of the operational amplifier AR3 is connected with the other end of the resistor R15, and the other end of the resistor R15 is connected with the resistor R15.
In a second embodiment, on the basis of the first embodiment, the signal receiving circuit receives a signal from an input end of a signal transmission channel for a remote control terminal of the network public opinion information early warning system, the abnormal signal is completely discharged to the ground through a detection circuit formed by a triode Q1, a thyristor VTL1, a capacitor C2 and a capacitor C3, one end of the capacitor C1 is connected to a negative electrode of the thyristor D1, one end of a resistor R1 and a signal input port, the other end of the capacitor C1 is grounded, one end of the resistor R2 and a collector of the triode Q1 are connected to the other end of the capacitor C1, a base of the triode Q1 is connected to an anode of the thyristor D1, an emitter of the triode Q1 is connected to a negative electrode of the thyristor D2 and an anode of the thyristor VTL1, a negative electrode of the thyristor D2 is connected to a gate of the thyristor VTL1 and one end of the resistor R3 and the capacitor C2, a cathode of the thyristor VTL1 is connected to one end of the resistor R4, the other end of the resistor R3 and the other end of the capacitor C2 is grounded, and the other end of the capacitor C3 is grounded.
In the third embodiment, based on the first embodiment, the signal output circuit uses a dual-T frequency-selective circuit formed by a resistor R16, a resistor R17 and a resistor R18, a capacitor C10 and a capacitor C12 to screen out a single frequency signal output, where the single frequency signal is not easily interfered, that is, the single frequency signal is input into a signal transmission channel for a remote control terminal of a network public opinion information early warning system, one end of the resistor R16 is connected with one end of the capacitor C10 and an output end of the operational amplifier AR2, the other end of the resistor R16 is connected with one end of the resistor R18 and one end of the capacitor C12, the other end of the capacitor C10 is connected with one end of the capacitor C11 and one end of the resistor R17, the other ends of the resistor R17 and the capacitor C12 are grounded, and the other ends of the resistor R18 and the capacitor C11 are connected with a signal output port.
When the invention is particularly used, the network public opinion information early warning system comprises a signal receiving circuit, a frequency modulation and amplitude modulation circuit and a signal output circuit, wherein the signal receiving circuit receives a signal at the input end of a signal transmission channel for a remote control terminal of the network public opinion information early warning system, abnormal signals are completely discharged to the ground through a detection circuit formed by a triode Q1, a silicon controlled rectifier VTL1, a capacitor C2 and a capacitor C3, the frequency modulation and amplitude modulation circuit outputs signals by two paths of signal receiving circuits, one path of signal is modulated through a frequency modulation circuit formed by a triode Q2, a triode Q4, a capacitor C6 and a capacitor C8, the triode Q2 and the triode Q4 share a collector, when the frequency is overlarge, the emitter of the triode Q2 is reduced, the collector of the triode Q4 is conducted at the moment, the frequency of the emitter of the triode Q4 is reduced, when the frequency is too low, the triode Q2 is not conducted, the triode Q4 is conducted, at this time, the emitter frequency of the triode Q4 is increased to achieve the effect of calibrating the signal frequency, the signal is amplitude modulated by the amplitude modulation filter circuit formed by the diode D3, the capacitor C5, the capacitor C9 and the resistor R11, wherein the triode Q3 plays the effect of feeding back and adjusting the output signal potential of the operational amplifier AR1, the operational amplifier AR3 and the triode Q5 are simultaneously designed to feed back signals into the frequency modulation circuit to adjust the output signal frequency value of the frequency modulation circuit, when the output signal of the operational amplifier AR2 is abnormal, the triode Q5 is conducted, the output signal of the operational amplifier AR3 is fed back into the triode Q4 at this time to achieve the effect of reducing the output signal frequency value of the frequency modulation circuit, when the triodes Q3 and Q5 are conducted, namely when the signal is abnormal, the alarm signal emitter E1 is triggered to send the alarm signal into the remote control terminal of the network public opinion information early warning system to alarm, and finally the signal output circuit applies the resistor R16, the double-T frequency selection circuit consisting of the resistor R17, the resistor R18, the capacitor C10, the capacitor C11 and the capacitor C12 screens out single-frequency signal output in signals, detects signals in a signal transmission channel for a remote control terminal in the network public opinion information early warning system in real time, and can automatically calibrate the signals and give an alarm in time.
While the invention has been described in connection with certain embodiments, it is not intended that the invention be limited thereto; for those skilled in the art to which the present invention pertains and the related art, on the premise of based on the technical scheme of the present invention, the expansion, the operation method and the data replacement should all fall within the protection scope of the present invention.
Claims (1)
1. The network public opinion information early warning system comprises a signal receiving circuit, a frequency modulation and amplitude modulation circuit and a signal output circuit, and is characterized in that the signal receiving circuit receives a signal at the input end of a signal transmission channel for a remote control terminal of the network public opinion information early warning system, abnormal signals are completely discharged to the ground through a detection circuit formed by a triode Q1, a triode VTL1, a capacitor C2 and a capacitor C3, the frequency modulation and amplitude modulation circuit outputs signals by two paths of signal receiving circuits, one path of signal is subjected to frequency modulation through a frequency modulation circuit formed by a triode Q2, a triode Q4, a capacitor C6 and a capacitor C8, the other path of signal is subjected to frequency modulation through an amplitude modulation filter circuit formed by a diode D3, a capacitor C5, a capacitor C9 and a resistor R11, and simultaneously, an operational amplifier AR3 and a triode Q5 feedback signal are designed to the frequency modulation circuit, the output signal frequency of the frequency modulation circuit is adjusted, when the triode Q3 and the triode Q5 are conducted, a trigger signal transmitter E1 sends alarm signals to the remote control terminal of the network public opinion information early warning system, and finally the signal output circuit outputs signals by using the single frequency modulation circuit formed by the resistor R16, the resistor R17, the capacitor C18 and the capacitor C11, and the capacitor C11 are also subjected to the remote control signal transmission of the network public opinion information early warning system;
the frequency modulation and amplitude modulation circuit comprises a triode Q2, wherein the base electrode of the triode Q2 is connected with a resistor R7 and one end of a capacitor C4, the other end of the resistor R7 is grounded, the other end of the capacitor C4 is connected with the collector electrode of the triode Q2, the collector electrode of the triode Q4 and one end of the capacitor C7 as well as the positive electrode of a diode D3, the emitter electrode of the triode Q2 is connected with a resistor R8 and one end of a capacitor C6, the base electrode of the triode Q4 is connected with one end of a resistor R9, one end of a resistor R14 and the output end of an operational amplifier AR3, the positive electrode of a diode D5 and the emitter electrode of the triode Q3, one end of the emitter electrode of the triode Q4 is connected with the collector electrode of the resistor R10, the negative electrode of the base electrode of the diode D4 and the non-inverting input end of the operational amplifier AR2, the other end of the resistor R5 and the inverting amplifier R11 of the resistor R5 are connected with the other end of the capacitor C8, the other end of the capacitor C8 is connected with the other end of the capacitor C8, the other end of the resistor R9 and the other end of the resistor C8 is connected with the other end of the resistor C8, the other end of the resistor R9 is connected with the output end of the resistor R3 and the non-inverting end of the resistor R3 is connected with the resistor R3, the output end of the non-inverting end of the resistor R11 is connected with the resistor R3 and the output end of the resistor R3;
the signal receiving circuit comprises a capacitor C1, one end of the capacitor C1 is connected with the cathode of a voltage stabilizing tube D1, one end of a resistor R1 and a signal input port, the other end of the capacitor C1 is grounded, the other end of the resistor R1 is connected with one end of a resistor R2 and the collector of a triode Q1, the base of the triode Q1 is connected with the anode of the voltage stabilizing tube D1, the emitter of the triode Q1 is connected with the cathode of the voltage stabilizing tube D2 and the anode of a controllable silicon VTL1, the cathode of the voltage stabilizing tube D2 is connected with the gate of the controllable silicon VTL1, the resistor R3 and one end of the capacitor C2, the cathode of the controllable silicon VTL1 is connected with one end of a resistor R4, the other ends of the resistor R3 and the capacitor C2 are grounded, the other end of the resistor R4 is connected with one end of the capacitor C3, and the other end of the capacitor C3 is grounded;
the signal output circuit comprises a resistor R16, one end of the resistor R16 is connected with one end of a capacitor C10 and the output end of an operational amplifier AR2, the other end of the resistor R16 is connected with one end of a resistor R18 and one end of a capacitor C12, the other end of the capacitor C10 is connected with one end of a capacitor C11 and one end of a resistor R17, the other ends of the resistor R17 and the capacitor C12 are grounded, and the other ends of the resistor R18 and the capacitor C11 are connected with the signal output port.
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| CN109743057B (en) * | 2019-01-10 | 2020-04-03 | 郑州工程技术学院 | Thing networking data transmission correction equipment |
| CN109581133B (en) * | 2019-01-24 | 2020-10-09 | 黄河科技学院 | Performance testing device based on antiferroelectric material |
| CN109589134B (en) * | 2019-01-29 | 2021-07-13 | 河南省中医院（河南中医药大学第二附属医院） | Ultrasonic radiography auxiliary monitoring device |
| CN109889458B (en) * | 2019-02-28 | 2021-12-28 | 深圳市信达珑丰科技有限公司 | Library information management system |
| CN109849681A (en) * | 2019-03-30 | 2019-06-07 | 郝蕾 | The torque signal compensation circuit of the four-wheel drive system of electric car |
| CN110176851A (en) * | 2019-05-14 | 2019-08-27 | 郑州工业应用技术学院 | A kind of electric power regulation device |
| CN111211795B (en) * | 2020-02-29 | 2020-12-22 | 宁波市建工检测有限公司 | Green building supervisory equipment based on big data |
| CN111404785A (en) * | 2020-05-13 | 2020-07-10 | 袁野 | 5G mobile network detection system based on cloud computing |
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| CN2626127Y (en) * | 2003-06-11 | 2004-07-14 | 皮卫平 | High-voltage experiment-purposed large-power frequency conversion power supply unit |
| CN102567393A (en) * | 2010-12-21 | 2012-07-11 | 北大方正集团有限公司 | Method, device and system for processing public sentiment topics |
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