CN210742707U - Information safety control circuit - Google Patents
Information safety control circuit Download PDFInfo
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- CN210742707U CN210742707U CN201921754033.XU CN201921754033U CN210742707U CN 210742707 U CN210742707 U CN 210742707U CN 201921754033 U CN201921754033 U CN 201921754033U CN 210742707 U CN210742707 U CN 210742707U
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Abstract
The utility model discloses an information safety control circuit, including signal receiving circuit, fortune comparison circuit and fortune output circuit of putting, signal receiving circuit received information safety control circuit is with signal transmission channel input end signal, application triode Q1 and polarity electric capacity C2, electric capacity C3 constitute the composite circuit and discharge the abnormal signal to ground, fortune is put comparison circuit application fortune amplifier AR1 in-phase amplification signal receiving circuit output signal, has designed fortune amplifier AR2 simultaneously, fortune amplifier AR3 constitutes difference circuit and is handled the signal difference, wherein triode Q2 adjusts fortune amplifier AR1 output signal electric potential, triode Q3 plays the feedback and adjusts fortune and puts comparison circuit output signal electric potential, finally fortune is put output circuit application fortune amplifier AR4 in-phase amplification back, is also the monolithic at input control terminal, plays the real-time signal automatic calibration to information safety control circuit for the signal transmission channel, reducing the effect of errors in the signal.
Description
Technical Field
The utility model relates to the technical field of circuits, especially, relate to an information security control circuit.
Background
At present, with the rapid development of industrialization and informatization, an information technology and a communication network technology are increasingly adopted by an industrial control system, and the information safety of the industrial control system faces a serious challenge, wherein signals of a signal transmission channel for an information safety control circuit need to be automatically calibrated in a transmission process, so that the error of the signals is reduced, and the accuracy of the information safety control circuit is further improved to a certain extent.
So the utility model provides a new scheme to solve the problem.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming the defects of the prior art, the utility model aims to provide an information security control circuit, have the characteristics of thinking ingenious, humanized design, reduce the error of signal to information security control circuit for signal transmission channel's signal automatic calibration in real time.
The technical scheme includes that the information safety control circuit comprises a signal receiving circuit, an operational amplifier comparison circuit and an operational amplifier output circuit, wherein the signal receiving circuit is connected with an analog signal port received by an information safety control terminal, a composite circuit consisting of a triode Q1, a polar capacitor C2 and a capacitor C3 is used for discharging abnormal signals to the ground, the operational amplifier comparison circuit amplifies the output signals of the signal receiving circuit in the same phase by using an operational amplifier AR1, and a differential circuit consisting of the operational amplifier AR2 and an operational amplifier AR3 is designed for carrying out differential processing on the signals, wherein the triode Q2 adjusts the output signal potential of the operational amplifier AR1, the triode Q3 plays a role in feedback adjustment of the output signal potential of the operational amplifier comparison circuit, and finally the operational amplifier output circuit outputs the signals after the operational amplifier AR4 is amplified in the same phase, namely the operational amplifier output circuit is a single chip microcomputer input into the control terminal;
the operational amplifier comparison circuit comprises an operational amplifier AR1, wherein the non-inverting input terminal of the operational amplifier AR1 is connected with the collector of a triode Q2 and the anode of a diode D1, the emitter of the triode Q2 is grounded, the base of a triode Q2 is connected with the output terminal of an operational amplifier AR1 and one end of a resistor R5, the cathode of the diode D1 is connected with one end of a resistor R6 and the non-inverting input terminal of the operational amplifier AR3, the other end of the resistor R6 is grounded, the inverting input terminal of the operational amplifier AR1 is connected with a resistor R3, one end of a resistor R4, the other end of the resistor R3 is grounded, the other end of a resistor R4 is connected with an emitter of a triode Q3, the other end of a resistor R5 is connected with a non-inverting input end of a power amplifier AR2, an inverting input end of a power amplifier AR2 is connected with one end of a resistor R11, the other end of the resistor R11 is connected with an inverting input end of a power amplifier AR3, the output end of the power amplifier AR2 is connected with the output end of a power amplifier AR3 and the base of the triode Q3, and the collector of a triode Q3 is connected with + 5V.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the advantages that;
1. the operational amplifier AR1 is used for amplifying the output signal of the signal receiving circuit in phase and amplifying the signal power, and meanwhile, the operational amplifier AR2 and the operational amplifier AR3 are designed to form a differential circuit for carrying out differential processing on the signal, so that self-excitation of the signal is eliminated, and the static working point of the signal is stabilized, wherein the triode Q2 adjusts the potential of the output signal of the operational amplifier AR1, and the abnormal signal caused by the in-phase amplification of the signal by the operational amplifier AR1 is prevented, so that when the potential difference between the output signal and the input signal of the operational amplifier AR1 is too large, the triode Q2 is conducted, the abnormal signal is discharged to the ground, and the effects of automatically calibrating the signal of the signal transmission channel for the information safety control circuit.
2. In order to further ensure the stability of the signal, the triode Q3 is designed to perform feedback regulation on the output signal potential of the operational amplifier comparison circuit, when the output signal of the comparison circuit is an abnormally high level signal, the triode Q3 is turned on, and a feedback signal is fed into the inverting input end of the operational amplifier AR1, so that the effect of reducing the output signal potential of the comparison circuit is achieved, and the signal is stabilized.
Drawings
Fig. 1 is a circuit diagram of the operational amplifier comparison circuit of the information security control circuit of the present invention.
Fig. 2 is the output circuit diagram of the operational amplifier of the information security control circuit of the present invention.
Fig. 3 is a signal receiving circuit diagram of the information security control circuit 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 drawings 1 to 3. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
An information safety control circuit comprises a signal receiving circuit, an operational amplifier comparison circuit and an operational amplifier output circuit, wherein the signal receiving circuit is connected with an analog signal port received by an information safety control terminal, a compound circuit consisting of a triode Q1, a polar capacitor C2 and a capacitor C3 is used for discharging abnormal signals to the ground, the operational amplifier comparison circuit uses an operational amplifier AR1 to amplify output signals of the signal receiving circuit in the same phase, meanwhile, an operational amplifier AR2 and an operational amplifier AR3 are designed to form a differential circuit for carrying out differential processing on the signals, the triode Q2 adjusts the output signal potential of the operational amplifier AR1, the triode Q3 plays a role in feedback adjustment of the output signal potential of the operational amplifier comparison circuit, and finally, the operational amplifier output circuit outputs the signals after in-phase amplification by using the operational amplifier AR4, namely, the operational amplifier output circuit is input into a single chip microcomputer of;
the operational amplifier comparison circuit utilizes an operational amplifier AR1 in-phase amplification signal receiving circuit to output signals and amplify signal power, and simultaneously designs a differential circuit composed of an operational amplifier AR2 and an operational amplifier AR3 to carry out differential processing on the signals, so as to eliminate signal self-excitation and stabilize the static working point of the signals, wherein a triode Q2 adjusts the output signal potential of the operational amplifier AR1 to prevent the abnormal signals caused by the in-phase amplification signals of the operational amplifier AR1, therefore, when the potential difference between the output signals and the input signals of the operational amplifier AR1 is overlarge, a triode Q2 is conducted to discharge the abnormal signals to the ground, in order to further ensure the stability of the signals, a triode Q3 is designed to feed back and adjust the output signal potential of the operational amplifier comparison circuit, when the output signals of the comparison circuit are abnormal high-level signals, a triode Q3 is conducted to feed back the signals to the inverting input end of the operational amplifier AR1 to reduce, the non-inverting input end of the operational amplifier AR1 is connected with the collector of the transistor Q2 and the anode of the diode D1, the emitter of the transistor Q2 is grounded, the base of the transistor Q2 is connected with the output end of the operational amplifier AR1 and one end of the resistor R5, the cathode of the diode D1 is connected with one end of the resistor R6 and the non-inverting input end of the operational amplifier AR3, the other end of the resistor R6 is grounded, the inverting input end of the operational amplifier AR1 is connected with one ends of the resistor R3 and the resistor R4, the other end of the resistor R3 is grounded, the other end of the resistor R4 is connected with the emitter of the transistor Q3, the other end of the resistor R5 is connected with the non-inverting input end of the operational amplifier AR2, the inverting input end of the operational amplifier AR2 is connected with one end of the resistor R2, the output end of the operational amplifier R2 is connected with the output end of the operational amplifier AR2 and the base of the transistor.
The signal receiving circuit receives a signal at the input end of a signal transmission channel for the information safety control circuit, a composite circuit consisting of a triode Q1, a polar capacitor C2 and a capacitor C3 is used for discharging an abnormal signal to the ground, the collector of the triode Q1 is connected with the cathode of the polar capacitor C1 and the anode of the polar capacitor C2, the anode of the polar capacitor C1 is connected with a signal input port and one end of a resistor R2, the cathode of the polar capacitor C2 is connected with one end of a resistor R1, the other end of the resistor R1 is grounded with the emitter of the triode Q1, the base of the triode Q1 is connected with one end of a capacitor C3, the other end of the capacitor C3 is connected with the other end of a resistor R2 and the non-inverting input end of an operational amplifier AR1, the operational amplifier output circuit outputs the signal after in-phase amplification by using an operational amplifier AR4, namely, the signal power is improved, the loss of a, the non-inverting input end of the operational amplifier AR4 is connected with one end of a resistor R7 and one end of a resistor R8, the other end of the resistor R7 is connected with +5V of a power supply, the other end of the resistor R8 is connected with the output end of the operational amplifier AR2, the inverting input end of the operational amplifier AR4 is connected with one end of a resistor R9 and one end of a resistor R10, the other end of the resistor R9 is grounded, and the output end of the operational amplifier AR4 is connected with the other end of a resistor R10 and a.
The utility model discloses when specifically using, an information safety control circuit, including signal receiving circuit, fortune comparison circuit and fortune output circuit of putting, signal receiving circuit received information safety control circuit is with signal transmission channel input end signal, and application triode Q1 and polarity electric capacity C2, electric capacity C3 constitute the composite circuit and discharge the abnormal signal to ground, fortune comparison circuit application fortune amplifier AR1 is with the same phase amplification signal receiving circuit output signal, amplifies signal power, has designed fortune amplifier AR2 simultaneously, fortune amplifier AR3 constitutes the difference circuit and carries out differential processing to the signal, the elimination signal self excitation, the static operating point of stable signal, wherein triode Q2 adjusts fortune amplifier AR1 output signal potential, prevents to lead to the signal after fortune amplifier AR1 is with the same phase amplification signal unusual, therefore when fortune amplifier AR1 output signal and input signal potential difference are too big, triode Q2 switches on, the abnormal signal is discharged to the ground, in order to further ensure the stability of the signal, the triode Q3 is designed to play a role in feeding back and adjusting the output signal potential of the operational amplifier comparison circuit, when the output signal of the comparison circuit is an abnormal high level signal, the triode Q3 is conducted, a feedback signal is fed into the inverting input end of the operational amplifier AR1 to play a role in reducing the output signal potential of the comparison circuit, and finally the operational amplifier output circuit is output after being amplified in phase by the operational amplifier AR4, namely the operational amplifier output circuit is input into a single chip microcomputer of the control terminal.
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 (3)
1. An information safety control circuit comprises a signal receiving circuit, an operational amplifier comparison circuit and an operational amplifier output circuit, and is characterized in that the signal receiving circuit is connected with an analog signal port received by an information safety control terminal, a triode Q1, a polar capacitor C2 and a capacitor C3 are used for forming a composite circuit to discharge abnormal signals to the ground, the operational amplifier comparison circuit uses an operational amplifier AR1 to amplify the output signals of the signal receiving circuit in the same phase, and simultaneously an operational amplifier AR2 and an operational amplifier AR3 are designed to form a differential circuit to carry out differential processing on the signals, wherein a triode Q2 adjusts the output signal potential of the operational amplifier AR1, a triode Q3 plays a role in feedback adjustment of the output signal potential of the operational amplifier comparison circuit, and finally the operational amplifier output circuit outputs the signals after the same-phase amplification by using an operational amplifier AR4, namely the operational amplifier output circuit is a single chip of the input control;
the operational amplifier comparison circuit comprises an operational amplifier AR1, wherein the non-inverting input terminal of the operational amplifier AR1 is connected with the collector of a triode Q2 and the anode of a diode D1, the emitter of the triode Q2 is grounded, the base of a triode Q2 is connected with the output terminal of an operational amplifier AR1 and one end of a resistor R5, the cathode of the diode D1 is connected with one end of a resistor R6 and the non-inverting input terminal of the operational amplifier AR3, the other end of the resistor R6 is grounded, the inverting input terminal of the operational amplifier AR1 is connected with a resistor R3, one end of a resistor R4, the other end of the resistor R3 is grounded, the other end of a resistor R4 is connected with an emitter of a triode Q3, the other end of a resistor R5 is connected with a non-inverting input end of a power amplifier AR2, an inverting input end of a power amplifier AR2 is connected with one end of a resistor R11, the other end of the resistor R11 is connected with an inverting input end of a power amplifier AR3, the output end of the power amplifier AR2 is connected with the output end of a power amplifier AR3 and the base of the triode Q3, and the collector of a triode Q3 is connected with + 5V.
2. The information safety control circuit as claimed in claim 1, wherein the signal receiving circuit comprises a transistor Q1, the collector of the transistor Q1 is connected to the cathode of a polarity capacitor C1 and the anode of a polarity capacitor C2, the anode of the polarity capacitor C1 is connected to the signal input port and one end of a resistor R2, the cathode of a polarity capacitor C2 is connected to one end of a resistor R1, the other end of the resistor R1 is connected to the emitter of the transistor Q1, the base of the transistor Q1 is connected to one end of a capacitor C3, and the other end of the capacitor C3 is connected to the other end of a resistor R2 and the non-inverting input of an operational amplifier AR 1.
3. The information safety control circuit of claim 1, wherein the operational amplifier output circuit comprises an operational amplifier AR4, the non-inverting input terminal of the operational amplifier AR4 is connected to one end of a resistor R7 and a resistor R8, the other end of the resistor R7 is connected to +5V, the other end of the resistor R8 is connected to the output terminal of the operational amplifier AR2, the inverting input terminal of the operational amplifier AR4 is connected to one end of the resistor R9 and a resistor R10, the other end of the resistor R9 is connected to ground, and the output terminal of the operational amplifier AR4 is connected to the other end of the resistor R10 and the signal output port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921754033.XU CN210742707U (en) | 2019-10-18 | 2019-10-18 | Information safety control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921754033.XU CN210742707U (en) | 2019-10-18 | 2019-10-18 | Information safety control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210742707U true CN210742707U (en) | 2020-06-12 |
Family
ID=70982275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921754033.XU Expired - Fee Related CN210742707U (en) | 2019-10-18 | 2019-10-18 | Information safety control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210742707U (en) |
-
2019
- 2019-10-18 CN CN201921754033.XU patent/CN210742707U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200612 Termination date: 20211018 |