WO2020259590A1 - Système et procédé d'enseignement pour approfondir la compréhension du principe de mesure d'une ligne de test - Google Patents

Système et procédé d'enseignement pour approfondir la compréhension du principe de mesure d'une ligne de test Download PDF

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WO2020259590A1
WO2020259590A1 PCT/CN2020/098128 CN2020098128W WO2020259590A1 WO 2020259590 A1 WO2020259590 A1 WO 2020259590A1 CN 2020098128 W CN2020098128 W CN 2020098128W WO 2020259590 A1 WO2020259590 A1 WO 2020259590A1
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WIPO (PCT)
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data
circuit
test line
test
students
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PCT/CN2020/098128
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English (en)
Chinese (zh)
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冯涛
彭鑫
薛卓尔
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北京科技大学
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Publication of WO2020259590A1 publication Critical patent/WO2020259590A1/fr

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
    • G09B23/187—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for measuring instruments

Definitions

  • the invention belongs to the field of teaching systems, and specifically relates to a teaching system and method for deepening the understanding of the principle of test line measurement.
  • Circuit experiment is a professional basic experiment for electronic information students in colleges and vocational schools.
  • the content of the experiment involves the use of basic electronic instruments, the verification of basic circuit theorems, and the observation of basic circuit phenomena.
  • the purpose of the experiment is to help students improve their practical ability and digestion. Understand the theoretical content.
  • the most basic operation in the circuit experiment is to measure the branch voltage and current.
  • the method of measuring voltage is to connect the voltmeter in parallel with the branch under test
  • the method of measuring current is to connect the ammeter in series with the branch under test.
  • the usual current measurement method is to use a current test line with one end connected to an ammeter and the other end to a current socket in the branch. Because of the structure of the current socket and the current test line, the ammeter is stringed into the branch circuit, thus realizing the current measurement test line measurement principle experiment box. This method realizes the measurement of the current.
  • the measurement principle of the test line is no problem with the experiment box, but during the experiment, many students just operate and measure mechanically in accordance with the requirements of the experimental textbook. Although the measured data is correct, they do not understand Why do I need to do this? I don’t understand the principle of this measurement method.
  • the present invention proposes a teaching system and method for deepening the understanding of the measurement principle of the test line, which can deepen the students' understanding of the measurement principle of the test line of the measuring element.
  • a teaching system for deepening the understanding of test line measurement principles includes:
  • Test line measurement principle experiment box the test box includes a plurality of electronic components, the electronic components form a test circuit through a plurality of branches, the test circuit includes a plurality of current/voltage sockets, students use the current/voltage meter Conduct circuit parameter measurement experiments on the test circuit with the current/voltage test line;
  • the server is used to store theoretical data and experimental data of circuit parameters, compare the theoretical data and experimental data, and transmit the comparison results to the client;
  • User side including data input module and data display module
  • the input module is used for students to input circuit parameter data, and the data includes theoretical data calculated by students according to known parameters in the test circuit and experimental data obtained by measurement;
  • the display module is used to display the theoretical and experimental circuit parameter data and comparison results.
  • connection mode between the user terminal and the server is wireless or optical fiber.
  • test line measurement principle experiment box includes Kirchhoff/superposition/homogeneity theorem verification experiment box, Thevenin/Norton theorem verification experiment box, single-phase AC circuit element equivalent parameter determination experiment box, three-phase AC One or more of the circuit voltage experiment box, current measurement experiment box, and two-port network research.
  • the input module is a keyboard.
  • the server includes:
  • the main control module as the center of the teaching system, realizes the data exchange between the modules in the server and between the server and the client;
  • the comparison module is used to compare the theoretical data and experimental data input by the students, and give the comparison result, and feed the comparison result back to the main control module;
  • Data storage module for storing the theoretical data and experimental data, comparison results, blank theoretical data tables and corresponding blank experimental data tables input by students;
  • the main control module is respectively connected with the comparison module and the data storage module.
  • Another object of the present invention is to provide a teaching method for deepening the understanding of the measurement principle of the test line.
  • the teaching method includes:
  • S1 Select a test circuit corresponding to the test line measurement principle experiment box on the user side, and obtain a blank theoretical data table and a corresponding blank experimental data table corresponding to the test circuit;
  • the client transmits the data in S4 to the server, and the server transmits the comparison result, the abnormal parameters in the comparison result, and the corresponding test line measurement principle to the client;
  • the student determines the correct measurement method according to the abnormal parameters shown on the user terminal and the corresponding measurement principle of the test line;
  • S7 Re-measure the abnormal parameter part according to the correct measurement method until the correct measurement value is obtained.
  • the teaching method further includes: S8, the server will store the theoretical data and experimental data input by the students, and the corresponding comparison results.
  • circuit parameters include: the voltage value and the current value of each branch in the test circuit.
  • the deviation range of each physical quantity in the abnormal parameter is set by the teacher on the server.
  • teaching method can deepen students' understanding of Kirchhoff's theorem, superposition theorem and homogeneity theorem, effectively combine theory with practice, and improve the learning network.
  • the present invention helps to improve students' ability to think actively, rather than passively and mechanically operate in accordance with the requirements of the book, so that students can have a deeper understanding of the measurement principle of current/voltage test lines, improve their hands-on ability and independent analysis and problem-solving ability.
  • Fig. 1 is a schematic diagram of the circuit principle for verifying Kirchhoff/superposition/homogeneity theorem in an embodiment of the present invention.
  • Figure 2 is a schematic diagram of the internal structure of the current socket in the embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the equivalent circuit structure when the current plug is not inserted into the current socket in the embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the structure of the current plug in the current test wire and the red and black terminals at the other end of the wire in the embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an equivalent circuit structure using a current test line in an embodiment of the present invention.
  • Fig. 6 is a schematic structural diagram of an incorrect current testing method in an embodiment of the present invention.
  • FIG. 7 is a schematic flow diagram of a teaching method for deepening the understanding of the principle of test line measurement in an embodiment of the present invention.
  • Fig. 8 is a schematic structural diagram of a teaching system for a deeper understanding of the principle of test line measurement in an embodiment of the present invention.
  • Fig. 9 is a schematic diagram of the server structure in the embodiment of the present invention.
  • FIG. 1 it is a schematic diagram of the circuit principle of Kirchhoff/superposition/homogeneity theorem.
  • students are required to measure the voltage and current of each branch with a test line, and use the measured data to verify the Kirchhoff/superposition/homogeneity theorem.
  • the corresponding branch needs to be disconnected and the ammeter is connected in series.
  • the relevant components in this circuit have been welded on the test line measurement principle experiment box, and a branch cannot be disconnected at will.
  • a current socket is installed on the branch of the test line measurement principle experiment box, which actually uses an ordinary audio interface, and its internal structure is shown in Figure 2.
  • the current socket needs to be used with the current test line.
  • one end of the current test line is an audio plug (herein referred to as a current plug), and the current plug has two contacts, which are respectively connected to the red and black terminals on the other end of the current test line.
  • the red and black terminals of the current test line are connected to the input terminals of the ammeter, and the current plug at the other end is inserted into the current socket on the test line measurement principle experiment box.
  • the insertion of the current plug causes the springs inside the current socket to be squeezed apart and respectively contact the two contacts of the current plug, so that the ammeter at the other end of the current test line is connected to the two contacts of the current socket respectively.
  • the effect is to connect the ammeter in series to the branch to measure the current of the branch.
  • the equivalent circuit is shown in Figure 5.
  • the ammeter/voltage meter can be connected in series/parallel to the three branches respectively, so that the branch current/voltage can be easily measured.
  • this embodiment proposes a teaching method for deepening the understanding of the measurement principle of the test line.
  • the teaching method includes:
  • S1 Select a test circuit corresponding to the test line measurement principle experiment box on the user side, and obtain a blank theoretical data table and a corresponding blank experimental data table corresponding to the test circuit;
  • the client transmits the data in S4 to the server, and the server transmits the comparison result, the abnormal parameters in the comparison result, and the corresponding test line measurement principle to the client;
  • the student determines the correct measurement method according to the abnormal parameters shown on the user terminal and the corresponding measurement principle of the test line;
  • S7 Re-measure the abnormal parameter part according to the correct measurement method until the correct measurement value is obtained.
  • the teaching method further includes: S8, the server will store the theoretical data and experimental data input by the students, and the corresponding comparison results.
  • the circuit parameters include: the voltage value and current value of each branch in the test circuit.
  • the deviation range of each physical quantity in the abnormal parameter is set by the teacher.
  • the teaching method is helpful to improve students' ability to think actively, instead of passively mechanically operating according to the requirements of books, so that students can have a deeper understanding of the measurement principle of current/voltage test lines and improve hands-on Ability and ability to analyze and solve problems independently. It will further deepen students' understanding of Kirchhoff's theorem, superposition theorem and homogeneity theorem, effectively combine theory with practice, and improve the learning network.
  • the teaching system includes:
  • Test line measurement principle experiment box the test box includes a plurality of electronic components, the electronic components form a test circuit through a plurality of branches, the test circuit includes a plurality of current/voltage sockets, students use the current/voltage meter Conduct circuit parameter measurement experiments on the test circuit with the current/voltage test line;
  • the server is used to store theoretical data and experimental data of circuit parameters, compare the theoretical data and experimental data, and transmit the comparison results to the client;
  • User side including data input module and data display module
  • the input module is used for students to input circuit parameter data, and the data includes theoretical data calculated by students according to known parameters in the test circuit and experimental data obtained by measurement;
  • the display module is used to display the theoretical and experimental circuit parameter data and comparison results.
  • the user end adopts a service APP
  • connection mode between the user terminal and the server is wireless or optical fiber.
  • the test line measurement principle experiment box includes Kirchhoff/superposition/homogeneity theorem verification experiment box, Thevenin/Norton theorem verification experiment box, single-phase AC circuit element equivalent parameter determination experiment box, and three-phase AC circuit voltage experiment One or more of the two-port network research box, current measurement experiment box.
  • the input module is a keyboard.
  • the server includes:
  • the main control module as the center of the teaching system, realizes the data exchange between the modules in the server and between the server and the client;
  • the comparison module is used to compare the theoretical data and experimental data input by the students, and give the comparison result, and feed the comparison result back to the main control module;
  • Data storage module for storing the theoretical data and experimental data, comparison results, blank theoretical data tables and corresponding blank experimental data tables input by students;
  • the main control module is respectively connected with the comparison module and the data storage module.

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Algebra (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Computational Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
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  • Instructional Devices (AREA)
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Abstract

La présente invention concerne le domaine des systèmes d'enseignement, et elle concerne en particulier un système et un procédé d'enseignement servant à approfondir la compréhension du principe de mesure d'une ligne de test. Le système et le procédé d'enseignement peuvent approfondir la compréhension qu'ont des étudiants du principe de mesure d'une ligne de test d'un élément de mesure. Le système d'enseignement comprend : un caisson d'expérimentation de principe de mesure de ligne de test; un serveur; et un client comprenant un module d'entrée de données et un module d'affichage de données. Le module d'entrée a pour fonction de permettre à un étudiant d'entrer des données de paramètre de circuit, les données comprenant des données théoriques calculées par l'étudiant selon des paramètres appris d'un circuit de test et selon des données expérimentales obtenues par mesure; et le module d'affichage sert à afficher les données théoriques et expérimentales de paramètre de circuit ainsi qu'un résultat de comparaison. La présente invention facilite l'amélioration de la capacité de pensée active des étudiants de façon à ce qu'ils n'effectuent pas une opération de façon passive et mécanique en fonction des exigences des livres, ce qui permet aux étudiants d'avoir une meilleure compréhension du principe de mesure d'une ligne de test actuelle et qui permet d'améliorer les capacités opérationnelles et la capacité à analyser et à résoudre des problèmes de façon indépendante.
PCT/CN2020/098128 2019-06-28 2020-06-24 Système et procédé d'enseignement pour approfondir la compréhension du principe de mesure d'une ligne de test WO2020259590A1 (fr)

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CN114049821A (zh) * 2021-11-19 2022-02-15 北京科技大学 一种一阶电路过渡过程实验教学系统和方法

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