CN214312307U - Novel laboratory modulus electricity experiment teaching system - Google Patents
Novel laboratory modulus electricity experiment teaching system Download PDFInfo
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- CN214312307U CN214312307U CN202023227747.0U CN202023227747U CN214312307U CN 214312307 U CN214312307 U CN 214312307U CN 202023227747 U CN202023227747 U CN 202023227747U CN 214312307 U CN214312307 U CN 214312307U
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Abstract
The invention discloses a novel laboratory analog-to-digital experiment teaching system which comprises a teacher terminal and a plurality of experiment boxes controlled by the teacher terminal, wherein the experiment boxes and the teacher terminal are used for data transmission through WIFI (wireless fidelity), each experiment box comprises an integrated operational amplifier experiment module, a transistor amplification circuit experiment module, a filter experiment module, an adjustable gain instrument amplification experiment module and a direct-current stabilized power supply experiment module, and test points are respectively added at the input end and the output end of each module; the experimental box further comprises a main control module, and the main control module comprises a WIFI communication module, a microprocessor, a test point information acquisition module, a key control module and a display screen. This teaching system can acquire and the analysis through microcontroller in the host system with each item parameter of the experiment that goes on in the experimental box to show all kinds of data on host system's display screen, upload data to the high in the clouds confession mr simultaneously and look over, be convenient for to student's experiment achievement check, modify and make statistics of.
Description
Technical Field
The utility model relates to teaching equipment technical field specifically is a novel laboratory mould electricity experiment teaching system.
Background
For the electronic technology specialty, the analog electronic technology is a very basic and important professional subject, and the analog-to-digital experiment is a very important step in the learning process of the analog-to-digital curriculum, so that students can be helped to deeply understand the analog-to-digital knowledge in an experiment mode, and the theoretical connection is realized. However, when the traditional modular electric experimental box is used, the student end needs to be connected through complex and tedious wiring, the efficiency is low, the traditional experimental box has no visual result display interface, and a user can not be tested more intuitively and efficiently. Because the reason that traditional experimental box was scattered, the mr's of being not convenient for centralized management when using reason, some portable mould electric experimental systems have appeared in the market, have had great improvement to traditional mould electric experimental system, nevertheless because its characteristic is the portability, the student can take away with oneself, but leads to the teacher to be difficult to carry out centralized management in the mould electric teaching.
Disclosure of Invention
In order to solve the above problem, the utility model provides a following technical scheme:
the utility model provides a novel laboratory modulus electricity experiment teaching system which characterized in that includes:
the system comprises a teacher terminal and a plurality of experimental boxes controlled by the teacher terminal, wherein the experimental boxes and the teacher terminal are used for data transmission through WIFI (wireless fidelity), each experimental box comprises an integrated operational amplifier experimental module, a transistor amplification circuit experimental module, a filter experimental module, an adjustable gain instrument amplification experimental module and a direct current stabilized power supply experimental module, and test points are respectively added to the input end and the output end of each module;
the experimental box further comprises a main control module, wherein the main control module comprises a WIFI communication module for data transmission with the teacher terminal, a microprocessor for displaying and analyzing the circuit experiment data correspondingly collected by each module on a liquid crystal screen, a test point information collection module, a key control module for gating a circuit in any module and a corresponding test point to perform independent experiments, and a display screen.
Furthermore, the integrated operational amplifier experimental module comprises an adder operational circuit, an integral differentiator operational circuit, a negative feedback circuit and a comparator circuit, wherein the comparator circuit comprises a single limit comparator circuit, a hysteresis comparator circuit and a window comparator circuit; a test point is added to the output end of the comparator circuit.
Furthermore, the transistor amplifying circuit experimental module comprises a single-stage amplifying circuit, a two-stage amplifying circuit, a negative feedback amplifying circuit, a differential amplifying circuit and a complementary symmetrical power amplifying circuit; and a test point is added to the output end of the complementary symmetrical power amplifying circuit.
Further, the direct current stabilized power supply experiment module comprises a rectifying circuit, a peak detection circuit and a voltage stabilizer, wherein the rectifying circuit comprises a half-wave rectifying circuit and a full-wave rectifying circuit; test points are respectively added to the output end of the rectifying circuit, the output end of the peak detection circuit and the output end of the voltage stabilizer.
Furthermore, the filter experiment module comprises a passive filter experiment circuit and an active filter experiment circuit.
Further, the amplification experiment module of the adjustable gain instrument is designed by the AD620, and the adjustable gain is set through a matrix keyboard and a microcontroller in the key control module.
Preferably, STM32F103ZET6 chip is selected for use to microcontroller, and key control still contains and sends the enter key for control microcontroller uploads the high in the clouds through WIFI communication module with the final circuit information that the circuit experiment was gathered.
Preferably, the system further comprises a cloud database module which is respectively connected with the experimental box and the teacher terminal through WIFI communication and used for storing information.
Compared with the prior art, the beneficial effects of the utility model are that:
this neotype laboratory modulus electricity experiment teaching system selects the sub-circuit that the key matrix comes the arbitrary module of gating modulus electricity experimental system through module circuit, and microcontroller switches the synchronous test point that the sub-circuit corresponds simultaneously, tests, but keying switches multimode electricity experimental circuit and can make the experimenter simply switch the modulus electricity experimental module fast, and not traditional complicated pulling out inserts the wiring, has improved the efficiency that the experimenter carries out the modulus electricity experiment to a great extent.
Each circuit characteristic information that microcontroller gathered passes through the display screen and shows in real time at student's end in the experiment, but visual observation experimental result compares with traditional circuit experiment, has left out the process of using the universal meter test circuit node repeatedly for experimental result is more directly perceived, more helps the student to carry out real-time analysis to experimental result.
After the circuit information acquired by the students is stable, the microcontroller processes the final circuit information acquired by the circuit experiment through an upload confirmation key and uploads the final circuit information to the cloud through the WIFI communication module; the data can not effectively be preserved after the test in traditional experimental box, has just increased experimenter's experiment number of times indirectly, but WIFI reports student end experimental box module of experimental data and makes student's experimental result save effectively, and the mr of being convenient for simultaneously obtains the experimental result and assesses and the pertinence teaching to the student.
Furthermore, the teacher end can obtain the module electricity experimental data that the high in the clouds student uploaded from the PC end, makes statistics of the arrangement, generates student's module electricity experimental documents, the centralized management of the experimental result of being convenient for.
Drawings
FIG. 1 is a diagram of a teaching system for laboratory modeling experiment;
FIG. 2 is a schematic diagram of a test point and each module of a modular electrical experiment box;
fig. 3 is a working schematic diagram of a laboratory electrical modeling experiment teaching system.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, the novel laboratory analog-to-digital experiment teaching system mainly comprises a teacher terminal and a plurality of experiment boxes controlled by the teacher terminal, wherein the experiment boxes and the teacher terminal perform data transmission through WIFI, as shown in fig. 2, each experiment box comprises an integrated operational amplifier experiment module, a transistor amplification circuit experiment module, a filter experiment module, an adjustable gain instrument amplification experiment module and a direct current stabilized power supply experiment module, and test points are respectively added to the input end and the output end of each module; the experimental box also comprises a main control module, wherein the main control module comprises a WIFI communication module for data transmission with the teacher terminal, a microprocessor for displaying and analyzing the circuit experiment data correspondingly acquired by each module on a liquid crystal screen, a test point information acquisition module, a key control module for gating a circuit in any module and corresponding test points to perform independent experiments, and a display screen; all experimental boxes are wirelessly connected to the cloud end through corresponding WIFI communication modules, and the teacher terminal PC can directly acquire data from the cloud end.
The integrated operational amplifier experimental module comprises an adder operational circuit, an integral differentiator operational circuit, a negative feedback circuit and a comparator circuit, wherein the comparator circuit comprises a single limit comparator circuit, a hysteresis comparator circuit and a window comparator circuit, and a test point 3 is added at the input end of the integrated operational amplifier experimental module and used for the microcontroller to acquire the voltage and the frequency of an input signal; adding a test point 5 at the output end of the integrated operational amplifier experimental circuit, wherein the test point is used for acquiring the amplitude and the frequency of an output signal of the integrated operational amplifier experimental circuit module by a microcontroller; a test point 6 is added at the output end of the comparator circuit part and used for the microcontroller to acquire the threshold voltage of the comparator; the microcontroller analyzes the acquired information and displays experimental parameters such as frequency, amplitude, gain, threshold value, waveform and the like on a display screen in real time.
The transistor amplification circuit test module comprises a single-stage amplification circuit, a two-stage amplification circuit, a negative feedback amplification circuit, a differential amplification circuit and a complementary symmetrical power amplification circuit module, wherein a test point 8 is added at the input end of the transistor amplification circuit test module and used for a microcontroller to acquire input signal voltage, frequency and static working points; a test point 10 is added at the output end of the transistor amplifying circuit and used for acquiring the voltage, the frequency, the static working point, the distortion degree and the like of an output signal by a microcontroller; and a test point 11 is added at the output end of the complementary symmetrical power amplification circuit and is used for collecting the current of an output signal. The microcontroller analyzes the acquired information, real-time displays experimental parameters such as frequency, amplitude, gain, distortion degree, static working points, waveform and the like on a display screen, and can analyze and display open-circuit and short-circuit faults of the circuit according to circuit characteristics among the information of the acquisition points.
The direct current stabilized voltage supply experimental module comprises a rectification circuit module, a peak detection circuit and a voltage stabilizer, wherein the rectification circuit comprises a half-wave rectification circuit and a full-wave rectification circuit, a set test point 9 is used for a microcontroller to collect an input signal waveform of the stabilized voltage supply module, a test point 12 is used for the microcontroller to collect an output signal waveform of the rectification circuit, a test point 13 is used for waveform collection and peak collection after a rectification signal is filtered by the peak detection circuit, and a test point 14 is used for collecting an output voltage value of the direct current stabilized voltage supply module; the microcontroller analyzes the acquired information and displays experimental parameters such as amplitude, waveform and the like on a display screen in real time.
The filter experiment module comprises a passive filter experiment circuit and an active filter experiment circuit, the test point 4 is used for collecting the peak value, the frequency and the waveform of an input signal by the microcontroller, and the test point 7 is used for collecting the amplitude, the frequency and the waveform of an output signal of the filter experiment circuit; the microcontroller analyzes the acquired information and displays experimental parameters such as amplitude, frequency and waveform on a display screen in real time.
The adjustable gain instrument amplification experiment module is designed by an AD620, the adjustable gain is set through a matrix keyboard and a microcontroller, and test points 1 and 2 are set and are respectively used for the microcontroller to acquire data such as amplitude, frequency and waveform of input and output signals of the adjustable gain instrument amplification module.
In the main control module, the microcontroller selects STM32F103ZET6, the signal amplitude of each test point is collected through in-chip AD, the frequency of each test point is measured through an equal-precision frequency measurement method, and circuit experiment data correspondingly collected by each module is displayed on a liquid crystal screen; the key control module can gate any sub-circuit in the above analog-to-digital experiment modules through key values to carry out an individual experiment, and correspondingly switches IO ports of all test points when the sub-module circuits are gated by keys, so that the collected test points are matched with the corresponding sub-modules, and the content displayed by the display screen is refreshed; still contain in the button control module and send the enter key for control microcontroller uploads the final circuit information that the circuit experiment was gathered to teacher's terminal through WIFI communication module.
When the laboratory analog-to-digital experiment teaching system is used, as shown in fig. 3, a student end selects a key array through a module circuit to gate a sub-circuit of any module of the analog-to-digital experiment system, meanwhile, a microcontroller switches synchronous test points corresponding to the sub-circuits to perform experiments, all circuit characteristic information acquired by the microcontroller in the experiments is displayed at the student end in real time through a display screen, and after the circuit information acquired by the students is stable, the microcontroller processes final circuit information acquired by the circuit experiments through an uploading confirmation key and uploads the final circuit information to a cloud end through a WIFI communication module; the teacher can obtain the module electricity experimental data that high in the clouds student uploaded from teacher terminal (PC end), makes statistics of the arrangement, generates student's module electricity experimental documents, the centralized management of the experimental result of being convenient for.
The foregoing is directed to embodiments of the present invention, and not to all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (8)
1. The utility model provides a novel laboratory modulus electricity experiment teaching system which characterized in that includes:
the system comprises a teacher terminal and a plurality of experimental boxes controlled by the teacher terminal, wherein the experimental boxes and the teacher terminal are used for data transmission through WIFI (wireless fidelity), each experimental box comprises an integrated operational amplifier experimental module, a transistor amplification circuit experimental module, a filter experimental module, an adjustable gain instrument amplification experimental module and a direct current stabilized power supply experimental module, and test points are respectively added to the input end and the output end of each module;
the experimental box further comprises a main control module, wherein the main control module comprises a WIFI communication module for data transmission with the teacher terminal, a microprocessor for displaying and analyzing the circuit experiment data correspondingly acquired by each module on a liquid crystal screen, a test point information acquisition module, a key control module for gating a circuit in any module and a corresponding test point to perform independent experiments, and a display screen.
2. The teaching system of laboratory analog-to-digital experiments according to claim 1, wherein the integrated operational amplifier experimental module comprises an adder operational circuit, an integral differentiator operational circuit, a negative feedback circuit, and a comparator circuit, the comparator circuit comprises a single limit comparator circuit, a hysteresis comparator circuit, a window comparator circuit; a test point is added to the output end of the comparator circuit.
3. The novel teaching system for laboratory modulus electric experiments according to claim 1, wherein the experimental module of transistor amplifying circuit comprises a single-stage amplifying circuit, a two-stage amplifying circuit, a negative feedback amplifying circuit, a differential amplifying circuit and a complementary symmetrical power amplifying circuit; and a test point is added to the output end of the complementary symmetrical power amplifying circuit.
4. The teaching system of laboratory analog electrical experiment of claim 1, wherein the dc regulated power supply experiment module comprises a rectifying circuit, a peak detection circuit, and a voltage stabilizer, the rectifying circuit comprises a half-wave rectifying circuit and a full-wave rectifying circuit; test points are respectively added to the output end of the rectifying circuit, the output end of the peak detection circuit and the output end of the voltage stabilizer.
5. The novel teaching system of laboratory analog electrical experiments of claim 1 wherein said filter experiment module comprises passive filter experiment circuit, active filter experiment circuit.
6. The novel laboratory analog-to-digital experiment teaching system as claimed in claim 1, wherein the adjustable gain instrument amplification experiment module is designed by AD620, and the adjustable gain is set by a matrix keyboard and a microcontroller in a key control module.
7. The novel teaching system for laboratory modulus electric experiments according to claim 6, wherein the microcontroller is STM32F103ZET6 chip, and the key control further comprises a sending confirmation key for controlling the microcontroller to upload the final circuit information collected by the circuit experiment to the cloud via the WIFI communication module.
8. The novel laboratory analog electric experiment teaching system as claimed in any one of claims 1 to 7, further comprising a cloud database module connected with the experiment box and the teacher terminal through WIFI communication respectively, for storing information.
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| CN202023227747.0U CN214312307U (en) | 2020-12-29 | 2020-12-29 | Novel laboratory modulus electricity experiment teaching system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112419851A (en) * | 2020-12-29 | 2021-02-26 | 济南大学 | Novel laboratory modulus electricity experiment teaching system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112419851A (en) * | 2020-12-29 | 2021-02-26 | 济南大学 | Novel laboratory modulus electricity experiment teaching system |
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