CN210295386U - Safety early warning device of electronic information measurement experiment table - Google Patents
Safety early warning device of electronic information measurement experiment table Download PDFInfo
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- CN210295386U CN210295386U CN201921940239.1U CN201921940239U CN210295386U CN 210295386 U CN210295386 U CN 210295386U CN 201921940239 U CN201921940239 U CN 201921940239U CN 210295386 U CN210295386 U CN 210295386U
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- resistor
- triode
- electronic information
- information measurement
- operational amplifier
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Abstract
The utility model discloses a safety precaution device of electronic information measurement laboratory bench, including voltage acquisition circuit, comparison feedback circuit and fortune transmitting circuit, voltage acquisition circuit gathers the power supply voltage of electronic information measurement laboratory bench, in the RC circuit filtering back input comparison feedback circuit that application resistance R2 and electric capacity C1 constitute, comparison feedback circuit application triode Q1 and fortune put ware AR1, AR2 comparison amplification signal, simultaneously application triode Q2, triode Q4 feedback signal to fortune put ware AR2 in-phase input end, finally in fortune transmitting circuit application fortune puts ware AR3 in-phase amplification back input signal transmitter E1, signal transmitter E1 send signal to electronic information measurement laboratory bench control terminal in, realized the effect of real-time power supply detection to the electronic information measurement laboratory bench.
Description
Technical Field
The utility model relates to an electronic information measures technical field, especially relates to a safety precaution device of electronic information measurement laboratory bench.
Background
At present, in the electronic experiment room of school, in order to let the student have better more clear understanding to electronic equipment and electronic components, be provided with the measurement that electronic information measures the laboratory bench and be used for various electronic equipment and electronic components information commonly used, because the student is more, measured electronic components is more, therefore the power of the power consumption power of electronic information measurement laboratory bench is great, needs to detect the power supply of electronic information measurement laboratory bench in real time.
So the utility model provides a new scheme to solve the problem.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming the defect of prior art, the utility model aims to provide a safety precaution device of electronic information measurement laboratory bench has realized the effect that detects the power supply of electronic information measurement laboratory bench in real time effectively.
The technical proposal for solving the problem is that the safety early warning device of the electronic information measurement experiment table comprises a power supply module, a control terminal and an early warning module, wherein the power supply module is a power supply module of the electronic information measurement experiment table, the control terminal is a controller of the electronic information measurement experiment table, the early warning module comprises a voltage acquisition circuit, a comparison feedback circuit and an operational amplifier transmitting circuit, the voltage acquisition circuit acquires the voltage of a power module of the electronic information measurement experiment table, an RC circuit consisting of a resistor R2 and a capacitor C1 is used for filtering and then inputting the filtered voltage into the comparison feedback circuit, the comparison feedback circuit compares the amplified signal by using a triode Q1 and the operational amplifiers AR1 and AR2, meanwhile, a triode Q2 and a triode Q4 are used for feeding back signals to the non-inverting input end of an operational amplifier AR2, finally, the operational amplifier transmitting circuit is amplified in a non-inverting mode by the operational amplifier AR3 and then is input into a signal transmitter E1, and a signal transmitter E1 sends signals to a control terminal of the electronic information measurement experiment table;
the comparison feedback circuit comprises a triode Q1, the collector of the triode Q1 is connected with one end of a capacitor C2, the other end of the capacitor C2 is connected with the non-inverting input end of an amplifier AR1, the inverting input end of an amplifier AR1 is connected with one end of a capacitor C3, the other end of the capacitor C3 is connected with the inverting input end of an amplifier AR2, the emitter of the triode Q1 is connected with the non-inverting input end of an amplifier AR2, one end of a resistor R11 and the cathode of a diode D1, the other end of a resistor R11 is grounded, the output end of an amplifier AR2 is connected with one end of a capacitor C4 and the base of a triode Q2, the other end of a capacitor C4 is connected with the output end of an amplifier AR 36, one end of the resistor R9, the other end of the resistor R9 is connected with the collector of the triode Q2 and the emitter of the triode Q4, the emitter of the triode Q2 is connected with the base of the triode Q4 and one end of the resistor R4, the other end of the resistor R4 is grounded, and the collector of the triode Q4 is connected with the anode of the diode D1.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the advantages that;
1, the signal is comparatively amplified to application triode Q1 and fortune amplifirer AR1, AR2, when voltage acquisition circuit output signal is the low level, triode Q1 does not switch on, fortune amplifirer AR1 inphase is enlargied in the input fortune amplifirer circuit, when voltage acquisition circuit output signal is the high level, triode Q1 switches on, fortune amplifirer AR1, fortune amplifirer AR2 and electric capacity C3 constitute the comparison circuit and compare the processing to the signal, stable signal quiescent operating point.
2, utilize triode Q2, triode Q4 feedback signal to fortune in putting ware AR2 in-phase input end, further calibrate comparison circuit output signal electric potential, prevent that the output signal electric potential is too big, increase fortune through feedback signal and put ware AR2 in-phase input end electric potential, and then reduce comparison circuit output signal electric potential, play the effect to signal electric potential automatic calibration, have very big reliability.
Drawings
Fig. 1 is the utility model relates to a safety precaution device's of electronic information measurement laboratory bench voltage acquisition circuit diagram.
Fig. 2 is the utility model relates to a safety precaution device's of electronic information measurement laboratory bench comparison feedback circuit diagram.
Fig. 3 is the utility model relates to a transmission circuit diagram is put in the fortune of safety precaution device of electronic information measurement laboratory bench.
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.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
The safety early warning device comprises a voltage acquisition circuit, a comparison feedback circuit and an operational amplifier transmitting circuit, wherein the voltage acquisition circuit acquires the power supply voltage of the electronic information measurement experiment table, an RC circuit consisting of a resistor R2 and a capacitor C1 is used for filtering and then inputting the power supply voltage into the comparison feedback circuit, the comparison feedback circuit uses a triode Q1 and operational amplifiers AR1 and AR2 for comparing and amplifying signals, and simultaneously uses a triode Q2 and a triode Q4 for feeding back signals to the in-phase input end of the operational amplifier AR2, finally, the operational amplifier transmitting circuit uses the operational amplifier AR3 for in-phase amplification and then inputs the signals into a signal transmitter E1, and the signal transmitter E1 sends the signals to a control terminal of the electronic information measurement experiment table;
the comparison feedback circuit uses a triode Q1 and operational amplifiers AR1 and AR2 to compare and amplify signals, when the output signal of the voltage acquisition circuit is at a low level, a triode Q1 is not conducted, the operational amplifier AR1 is input into the operational amplifier transmitting circuit after in-phase amplification, when the output signal of the voltage acquisition circuit is at a high level, a triode Q1 is conducted, a comparison circuit consisting of an operational amplifier AR1, an operational amplifier AR2 and a capacitor C3 compares and processes the signals and stabilizes the static working point of the signals, meanwhile, a triode Q2 and a triode Q4 are used to feed back signals to the in-phase input end of an operational amplifier AR2, the output signal potential of the comparison circuit is further calibrated, the output signal potential of the comparison circuit is prevented from being too large, the potential of the in-phase input end of the operational amplifier AR2 is increased through the feedback signal, the output signal potential of the comparison circuit is further reduced, the automatic calibration effect on the signal potential is achieved, the collector of the triode Q96AR 37 is connected with one end of the, the inverting input end of the operational amplifier AR1 is connected with one end of a capacitor C3, the other end of the capacitor C3 is connected with the inverting input end of the operational amplifier AR2, the emitter of the triode Q1 is connected with the non-inverting input end of the operational amplifier AR2, one end of a resistor R11 and the cathode of a diode D1, the other end of the resistor R11 is grounded, the output end of the operational amplifier AR2 is connected with one end of a capacitor C4 and the base of a triode Q2, the other end of the capacitor C4 is connected with the output end of the operational amplifier AR1, the other end of the capacitor C4 and one end of a resistor R9, the other end of the resistor R9 is connected with the collector of a triode Q2 and the emitter of a triode Q4, the emitter of the triode Q2 is connected with the base of the triode Q4 and one end of the resistor R4, the other end.
In the second embodiment, on the basis of the first embodiment, the voltage acquisition circuit acquires the power supply voltage of the electronic information measurement experiment table by using a voltage transformer J1 with the model number PT202D, a resistor R2 and a capacitor C1 are connected in parallel to form an RC circuit for filtering, a power supply end of the voltage transformer J1 is connected to one end of a resistor R1, the other end of the resistor R1 is connected to +5V, a ground end of the voltage transformer J1 is grounded, an output end of the voltage transformer J1 is connected to one end of a resistor R2, the other end of the resistor R2 is connected to one end of the capacitor C1, one end of the resistor R3 and a non-inverting input end of an operational amplifier AR1, the other end of the capacitor C1 is grounded, and the other end of the resistor R3 is.
Third embodiment, on the basis of the second embodiment, the operational amplifier transmitting circuit inputs a signal into the signal transmitter E1 after the operational amplifier AR3 amplifies in-phase, amplifies the signal power, the signal transmitter E1 transmits a signal into the electronic information measurement experiment table control terminal, the electronic information measurement experiment table control terminal can monitor the operating condition of the power supply voltage in real time, the non-phase input end of the operational amplifier AR3 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to the collector of the triode Q2, the anti-phase input end of the operational amplifier AR3 is connected to one ends of the resistor R6 and the resistor R7, the other end of the resistor R7 is grounded, the other end of the resistor R6 is connected to the output end of the operational amplifier AR3 and one end of the resistor R8, and the other end of the resistor R8 is connected to the.
The utility model discloses when using specifically, a safety precaution device of electronic information measurement laboratory bench, including voltage acquisition circuit, comparison feedback circuit and fortune emission circuit, the power supply voltage of voltage acquisition circuit collection electronic information measurement laboratory bench, input in comparison feedback circuit after the RC circuit filtering that application resistance R2 and electric capacity C1 constitute, comparison feedback circuit uses triode Q1 and fortune amplifier AR1, AR2 comparison amplified signal, when voltage acquisition circuit output signal is the low level, triode Q1 does not conduct, fortune amplifier AR1 inputs in the fortune emission circuit after the homophase amplification, when voltage acquisition circuit output signal is the high level, triode Q1 switches on, fortune amplifier AR1, fortune amplifier AR2 and electric capacity C3 constitute comparison circuit to the signal comparison processing, stable signal static operating point, simultaneously application triode Q2, triode Q4 feedback signal is in fortune amplifier AR2 input, further calibrate comparison circuit output signal electric potential, prevent that output signal electric potential is too big, increase fortune amplifier AR2 homophase input end electric potential through feedback signal, and then reduce comparison circuit output signal electric potential, play the effect to signal electric potential automatic calibration, at last fortune is put the transmitting circuit and is applied fortune amplifier AR3 inphase and enlargies in the back input signal transmitter E1, in signal transmitter E1 sends the signal to electronic information measurement laboratory bench 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. A safety early warning device of an electronic information measurement experiment table comprises a power supply module, a control terminal and an early warning module, wherein the power supply module is a power supply module of the electronic information measurement experiment table, the control terminal is a controller of the electronic information measurement experiment table, and the early warning module comprises a voltage acquisition circuit, a comparison feedback circuit and an operational amplifier transmitting circuit and is characterized in that the voltage acquisition circuit acquires the voltage of the power supply module of the electronic information measurement experiment table, the comparison feedback circuit receives an output signal of the voltage acquisition circuit, the output end of the comparison feedback circuit is connected with the input end of the operational amplifier transmitting circuit, the operational amplifier transmitting circuit inputs the signal into a signal transmitter E1 after being amplified in phase by an operational amplifier AR3, and the signal transmitter E1 sends a signal to the control terminal of the electronic information measurement experiment table;
the comparison feedback circuit comprises a triode Q1, the collector of the triode Q1 is connected with one end of a capacitor C2, the other end of the capacitor C2 is connected with the non-inverting input end of an amplifier AR1, the inverting input end of an amplifier AR1 is connected with one end of a capacitor C3, the other end of the capacitor C3 is connected with the inverting input end of an amplifier AR2, the emitter of the triode Q1 is connected with the non-inverting input end of an amplifier AR2, one end of a resistor R11 and the cathode of a diode D1, the other end of a resistor R11 is grounded, the output end of an amplifier AR2 is connected with one end of a capacitor C4 and the base of a triode Q2, the other end of a capacitor C4 is connected with the output end of an amplifier AR 36, one end of the resistor R9, the other end of the resistor R9 is connected with the collector of the triode Q2 and the emitter of the triode Q4, the emitter of the triode Q2 is connected with the base of the triode Q4 and one end of the resistor R4, the other end of the resistor R4 is grounded, and the collector of the triode Q4 is connected with the anode of the diode D1.
2. The safety precaution device of an electronic information measuring experiment table as claimed in claim 1, said voltage acquisition circuit includes a voltage transformer J1 with model PT202D, the power end of the voltage transformer J1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with +5V, the ground end of the voltage transformer J1 is grounded, the output end of the voltage transformer J1 is connected with one end of a resistor R2, the other end of the resistor R2 is connected with one end of a capacitor C1 and one end of a resistor R3 and the non-inverting input end of an operational amplifier AR1, the other end of the capacitor C1 is grounded, and the other end of the resistor R3 is connected with the base of a triode Q1.
3. The safety precaution device of an electronic information measuring experiment table as claimed in claim 1, said operational amplifier transmitting circuit includes an operational amplifier AR3, the non-inverting input terminal of the operational amplifier AR3 is connected to one end of a resistor R5, the other end of the resistor R5 is connected to the collector of a transistor Q2, the inverting input terminal of the operational amplifier AR3 is connected to one end of a resistor R6 and a resistor R7, the other end of the resistor R7 is grounded, the other end of the resistor R6 is connected to the output terminal of the operational amplifier AR3 and one end of a resistor R8, and the other end of the resistor R8 is connected to a signal transmitter E1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921940239.1U CN210295386U (en) | 2019-11-12 | 2019-11-12 | Safety early warning device of electronic information measurement experiment table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921940239.1U CN210295386U (en) | 2019-11-12 | 2019-11-12 | Safety early warning device of electronic information measurement experiment table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210295386U true CN210295386U (en) | 2020-04-10 |
Family
ID=70065348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921940239.1U Expired - Fee Related CN210295386U (en) | 2019-11-12 | 2019-11-12 | Safety early warning device of electronic information measurement experiment table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210295386U (en) |
-
2019
- 2019-11-12 CN CN201921940239.1U patent/CN210295386U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 Termination date: 20201112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |