CN106327978A - Electronic technology course demonstration system based on semi-physical simulation - Google Patents
Electronic technology course demonstration system based on semi-physical simulation Download PDFInfo
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- CN106327978A CN106327978A CN201610959319.6A CN201610959319A CN106327978A CN 106327978 A CN106327978 A CN 106327978A CN 201610959319 A CN201610959319 A CN 201610959319A CN 106327978 A CN106327978 A CN 106327978A
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- computer
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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
- G09B23/183—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits
Abstract
The invention discloses an electronic technology course demonstration system based on semi-physical simulation. The demonstration system comprises assistant software, a computer, a sound card, a circuit board module, and a direct current power module. The sound card is connected with the computer and the circuit board module. The assistant software is installed on the computer. One audio cable is connected with the line out interface of the computer and the input end of the circuit board module, the output impedance of the line out interface of the computer and the input impedance of the circuit board are needed to be tested, and an attenuator is suitably added to match the impedance between the line out interface of the computer and the circuit board; and the other audio cable is connected with the output end of the circuit board module and the line in interface of the computer, the output impedance of the circuit board and the input impedance of the line in interface of the computer are needed to be tested, and a voltage follower is suitably added to match the impedance between the output end of the circuit board and the line in interface of the computer. The direct current power module mainly supplies the power to the circuit board module.
Description
Technical field
The present invention relates to teaching field, a kind of Electron Technique Course demo system based on HWIL simulation.
Background technology
" Fundamentals of Electronic Technology " course includes theory teaching and experimental teaching, and theory teaching is that teacher uses multiple teaching side
Method and teaching means make student understand and grasp electronic technology in terms of classical basic theoretical knowledge, experimental teaching be connect knowledge
With the important means put into practice and make theoretical knowledge intergrate with practice.
The most more about " Fundamentals of Electronic Technology " method reform in teaching, such as item teaching method, teaching combining theory with practice
Method, Behavior layer, case teaching methodology, simulation software pedagogy etc..These methods, compared with traditional teaching method, have
Certain superiority, improves teaching efficiency to a certain extent.
Simulation software pedagogy, i.e. with EDA simulation softwares such as EWB, Multisim, brings classroom into experimental phenomena.Classroom
On can emulate various electronic circuit at any time, change parameter as required, make experimental result repeatedly reappear, student can also oneself
Start, obtain result by experiment, carry out theoretical validation.Theoretical classroom introduces emulation experiment, can help to understand and consolidate
Theoretical knowledge, reaches preferable teaching efficiency.But, when utilizing simulation software lecture experiment phenomenon, circuit or virtual, with
Side circuit there is also a certain distance.
At conditional electronic technology experiment, experimental situation needs experimental box (circuit board in kind), signal source, oscillograph, general-purpose
The hardware devices such as table, any electronic technology theory is finally required for being set up circuit by actual components, by input signal and showing
Ripple device observation experiment phenomenon is verified and realizes.If will on theoretical classroom real time demonstration experimental phenomena, then need these real
Test instrument.But instrument is relatively big, carries constant.At present, Electron Technique Course realizes the mode of Experiment of Electronic Technology phenomenon demonstration
Mainly there is an in the following manner:
(1) experimental box+signal source instrument+oscillograph instrument.The most general multiple experiment is integrated in an experimental box, real
Tryoff typically has transformator can be converted into the supply voltage needed for experiment, and the signal that experiment needs typically is produced by signal source instrument
Raw, the signal that experiment produces is shown by oscillograph instrument.Generally, experiment is carried out in Special experimental room, and equipment is many, instrument
Greatly, the Experiment Teaching Mode usually used in demo system at present.
(2) experiment module circuit+virtual oscilloscope.It is soft that virtual oscilloscope comprises data acquisition unit, computer, virtual instrument
Part, data acquisition unit to input analogue signal signal condition, analog digital conversion, if desired data are cached；Computer is wide
General universal common tool, has powerful man-machine interaction resource, including large screen display, mouse action, keyboard operation, touch
Screen operation, sound operation etc. and powerful computing capability, the memory space including one or more high-speed CPUs, magnanimity includes firmly
Dish, Dropbox and internal memory etc.；Virtual instrument software is set up on the powerful calculating resource of computer and man-machine interaction resource, to collection
To data carry out processing, analyze, show, and provide the user human-computer interaction interface.Compared with oscillograph independent with tradition, virtual
Oscillograph has the price advantage on hardware, and being primarily due to computer is mass product, although powerful, but due on the market
Annual tens of level sale too and competing widely, extremely cheap.Use virtual oscilloscope to need to buy expert data to adopt
Truck and supporting professional software, it is the highest that this kind of mode realizes cost, needs educational reform business models.
Summary of the invention
For above-mentioned prior art, the technical problem to be solved in the present invention is that the equipment of illustrative circuitry carries inconvenience, expense
With height, it is provided that a kind of Electron Technique Course based on HWIL simulation demonstration system demonstrating true to nature, easy to carry, low cost
System.
For solving the problems referred to above, a kind of Electron Technique Course demo system based on HWIL simulation of the present invention, this demonstration
System includes: auxiliary software, computer, sound card, circuit board module, DC power supplier, wherein sound card couples computer and electricity
Road plate module, on computers, a tone frequency channel wire connects line out interface and the circuit board module of computer in auxiliary software installation
The input of block, primarily serves the output action of signal, needs output impedance and the circuit of measuring and calculation machine line out interface
The input impedance of plate, by suitably increasing attenuator so that impedance matching between the two；Another tone frequency channel wire connects circuit board
The outfan of module and the line in interface of computer, primarily serve the input action of signal, needs to test the output of circuit board
Impedance and the input impedance of computer line in interface, by suitably increasing voltage follower so that impedance between the two
Coupling；Waveform is exported by the waveform that auxiliary software produces by the line out interface of computer；The output wave of circuit board module
Shape is sent on the auxiliary software of computer show by the line in interface of computer；DC power supplier is predominantly
Circuit board module is powered.
In above-mentioned Electron Technique Course demo system based on HWIL simulation: auxiliary software mainly builds waveform
Generation module and waveform display module, assume responsibility for the function that signal produces and signal shows；Sound card primarily serves data collecting card
Function, undertake data acquisition function；Computer is to provide signal source and output display end as emulation platform；Pass through computer
Line out interface will auxiliary software produce waveform output, this waveform is as the signal source of circuit board module；Circuit board module
The output waveform of block is sent on the auxiliary software of computer show by the line in interface of computer.
Sound card is the common sound card of the data acquiring frequency with 44K.
Owing to conventional acoustic card has the quantified precision of 16, the data acquiring frequency of 44K, electronic technology can be met completely
The generation of basis low frequency signal and the collection of signal.Sound card is the sound card that computer carries, and data acquiring frequency is fixed, current one
As be 44K, along with development in science and technology, later may be higher.
Preferably, auxiliary software is Labview software.
Preferably, auxiliary software is VC++ software.The software that signal produces and signal shows can be realized and can serve as auxiliary
Help software.
Further, DC power supplier can also replace with aneroid battery.
Owing to have employed technique scheme, present invention have the advantage that
(1) utilizing sound card as data acquisition, need not individually purchase data collecting card, cost is the lowest, and can carry out electricity in real time
The collection of road waveform；
(2) auxiliary software can produce waveform, also can display waveform, be equivalent to be integrated with signal source equipment and oscilloscope apparatus；
(3) HWIL simulation pedagogy, has broken time and the restriction in space in traditional experiment demonstration, can give full play to again simultaneously
The advantage of simulation software, real-time exhibition elusive circuit phenomenon in theory is lectured；
(4) demo system low cost, it is easy to carry；
(5) overcome the inadequate intuitive of simple software emulation, be prone to again demonstrate on classroom, simple theory explaination
It is converted into theory analysis and side circuit demonstration, adds the multiformity of classroom instruction, it is possible to excite students ' interest of study, teaching
Effective, there is the good suitability and promotional value.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of Electron Technique Course demo system based on HWIL simulation of the present invention.
Fig. 2 is that a kind of Electron Technique Course demo system based on HWIL simulation of the present invention is in quiescent point is applied
The input signal of fixed bias circuit of Labview auxiliary Software Create.
Fig. 3 is that a kind of Electron Technique Course demo system based on HWIL simulation of the present invention is in quiescent point is applied
Fixed bias circuit output signal after master die effect.
Fig. 4 is that a kind of Electron Technique Course demo system based on HWIL simulation of the present invention is in quiescent point is applied
The input signal of biasing circuit of divided voltage of Labview auxiliary Software Create.
Fig. 5 is that a kind of Electron Technique Course demo system based on HWIL simulation of the present invention is in quiescent point is applied
Biasing circuit of divided voltage output signal after master die effect.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the present invention is entered
Row further describes.Specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The stable problem of quiescent point is important content in Fundamentals of Electronic Technology course, when theory is lectured, " why
Quiescent point to be arranged " and " stablizing the effect of quiescent point " this two parts content be difficult point.Fig. 1 is a kind of based on half
The structural representation of the Electron Technique Course demo system of matter emulation.This demo system includes that Labview assists software, calculating
Machine, sound card, circuit board module, DC power supplier, on computers, Labview assists software in Labview auxiliary software installation
Mainly build waveform generation module and waveform display module, assume responsibility for the function that signal produces and signal shows；Sound card couples
Computer and circuit board module, sound card primarily serves the function of data collecting card, undertakes data acquisition function；Computer is conduct
Emulation platform provides signal source and output display end；Article one, tone frequency channel wire connects line out interface and the circuit board module of computer
Input, primarily serve the output action of signal, need output impedance and the circuit board of measuring and calculation machine line out interface
Input impedance, by suitably increasing attenuator so that impedance matching between the two；Another tone frequency channel wire connects circuit board
The outfan of module and the line in interface of computer, primarily serve the input action of signal, needs to test the output of circuit board
Impedance and the input impedance of computer line in interface, by suitably increasing voltage follower so that impedance between the two
Coupling；Waveform is exported by the waveform that Labview auxiliary software produces by the line out interface of computer；Circuit board module
Output waveform is sent on the Labview auxiliary software of computer show by the line in interface of computer.
Fig. 2 is the input signal of the fixed bias circuit of the Labview auxiliary Software Create of the present invention, its input signal warp
Cross to process and by the line out interface of computer, waveform is exported, as the input signal of circuit board module, through circuit board
Module effect forms output signal, and this signal is shown, such as Fig. 3 at Labview auxiliary software by the line in interface of computer
Shown in.
Fig. 4 is the input signal of the biasing circuit of divided voltage of the Labview auxiliary Software Create of the present invention, its input signal
Waveform is exported by the line out interface of computer through processing, as the input signal of circuit board module, through oversampling circuit
Plate module effect forms output signal, and this signal is shown at Labview auxiliary software by the line in interface of computer, as
Shown in Fig. 5.The performance of biasing circuit of divided voltage is better than the performance of fixed bias circuit, and Fig. 3 and Fig. 5 can reflect temperature
Object signal when change is truly schemed.
Claims (5)
1. an Electron Technique Course demo system based on HWIL simulation, it is characterised in that this system includes: auxiliary software,
Computer, sound card, circuit board module, DC power supplier, the wherein said computer described in sound card connection and described electricity
Road plate module, described auxiliary software is arranged on described computer, the line of the computer described in a tone frequency channel wire connection
Out interface and the input of described circuit board module, another tone frequency channel wire connect described in circuit board module outfan and
The line in interface of described computer；The waveform that described auxiliary software the produces line out by described computer
Waveform is exported by interface；The output waveform of described circuit board module is sent to by the line in interface of described computer
On described auxiliary software；Described DC power supplier is mainly described circuit board module and powers.
A kind of Electron Technique Course demo system based on HWIL simulation the most according to claim 1, it is characterised in that:
Described sound card is the common sound card of the data acquiring frequency with 44K.
A kind of Electron Technique Course demo system based on HWIL simulation the most according to claim 1 and 2, its feature exists
In: described auxiliary software is Labview software.
A kind of Electron Technique Course demo system based on HWIL simulation the most according to claim 1 and 2, its feature exists
In: described auxiliary software is VC++ software.
A kind of Electron Technique Course demo system based on HWIL simulation the most according to claim 1 and 2, its feature exists
In: described DC power supplier could alternatively be aneroid battery.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610372657X | 2016-05-27 | ||
| CN201610372657 | 2016-05-27 |
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| Publication Number | Publication Date |
|---|---|
| CN106327978A true CN106327978A (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610959319.6A Pending CN106327978A (en) | 2016-05-27 | 2016-11-03 | Electronic technology course demonstration system based on semi-physical simulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108510853A (en) * | 2018-03-29 | 2018-09-07 | 东华大学 | A kind of high-frequency circuit virtual reality fusion experiment porch based on virtual instrument technique |
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| CN101066208A (en) * | 2007-01-10 | 2007-11-07 | 天津心脏病学研究所 | Electrocardial instrument with sound card for acquiring electrocardial signal |
| CN201616207U (en) * | 2010-02-08 | 2010-10-27 | 邢台市第一中学 | Digitalized electromagnetic oscillation demonstration instrument |
| CN201755235U (en) * | 2009-07-31 | 2011-03-09 | 深圳职业技术学院 | Heart sound signal collecting and analyzing device based on sound card |
| CN102096056A (en) * | 2009-12-09 | 2011-06-15 | 无锡爱睿芯电子有限公司 | Method for automatically correcting sound card oscilloscope |
| CN103018514A (en) * | 2012-04-11 | 2013-04-03 | 湖南科技学院 | Virtual oscilloscope device based on sound card |
-
2016
- 2016-11-03 CN CN201610959319.6A patent/CN106327978A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066208A (en) * | 2007-01-10 | 2007-11-07 | 天津心脏病学研究所 | Electrocardial instrument with sound card for acquiring electrocardial signal |
| CN201755235U (en) * | 2009-07-31 | 2011-03-09 | 深圳职业技术学院 | Heart sound signal collecting and analyzing device based on sound card |
| CN102096056A (en) * | 2009-12-09 | 2011-06-15 | 无锡爱睿芯电子有限公司 | Method for automatically correcting sound card oscilloscope |
| CN201616207U (en) * | 2010-02-08 | 2010-10-27 | 邢台市第一中学 | Digitalized electromagnetic oscillation demonstration instrument |
| CN103018514A (en) * | 2012-04-11 | 2013-04-03 | 湖南科技学院 | Virtual oscilloscope device based on sound card |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108510853A (en) * | 2018-03-29 | 2018-09-07 | 东华大学 | A kind of high-frequency circuit virtual reality fusion experiment porch based on virtual instrument technique |
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Application publication date: 20170111 |
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