Which modules are ready for amplifier in electronic design competition
Author:Ding Qirong Time:2021-07-19 14:36 Browse(927)
According to your situation, the most important thing at this stage is to be familiar with the most basic courses, such as analog electronics, digital electronics.
According to your situation, the most important thing at this stage is to master the most basic course of analog electronics, digital electronics.
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and then.

Which modules are ready for amplifier in electronic design competition

you must understand that the difficulty and direction of the national electric games are much more difficult than before. You and your team must have a firm belief, Every competition will be cheating.
for example, some instructors design and make it for competition, and others find an expert to do it and test it.
too many things happen.
therefore,
the comprehensiveness of the current topic is much higher than the original one. On the one hand, it is necessary to improve the cooperation of the team, On the other hand, the experts of the national expert group want to put an end to the behavior of the Gunners as far as possible from the perspective of writing questions. If you want a team of Gunners for comprehensive questions, the cost will be a little high.
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then.
in your team, you need a relatively comprehensive, responsible, good at communicating with relevant teachers and consulting The team leader should try every means to provide convenient conditions, such as laboratory, buying components, contacting instruments, books, consulting teachers, going out to do PCB and so on, The team leader should bear the brunt of these contents.
the team leader does not mean that he has any right.
but that he has to pay more.
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of course.
most schools have to be selected, and many people will be unfortunately eliminated.
then.
sometimes the grouping situation is arranged by the school's instructor, and you can contact them yourself, But it must be approved by the teacher.
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now.
talk about the specific preparation.
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first.
firstYou and your classmates should study hard and read well. At least, you should know how to get back the basic knowledge.
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secondly,
you should get information and know from many aspects which teachers are guiding the competition in previous years in your school, and who has better grades. All the students in our school should find this teacher very well.
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thirdly,
find this teacher, Ask him if he will take the students to participate in the competition next year, and what is the training plan of the school.
show him your determination.
and tell him your learning status and preparation.
consult him.
what you need to prepare, and respect the teacher's suggestions.
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fourth.
go to find the test questions of previous years, In general, there are several types of problems: power supply, signal detection and control, signal processing, etc.
to analyze which type of problems your teachers are good at.
you should focus on.
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fifth,
do more, You must do more.
if you don't know how to use electric soldering iron and oscilloscope, you still need to take part in some competitions.
to do this, you have to say 5000 words.
so let's talk about it briefly.
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several requirements you must achieve:
1. Perfect welding process;
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2. Skillful use of various instruments
3. Identification of common components (types, materials, parameters, etc.)
4. Usage and pin definition of production chip (common op amp, comparator, digital circuit, AD / DA, power chip, etc.)
5. Use of single chip microcomputer.
2Speaking of single chip microcomputer, you said that you are studying Guo Tianxiang's tutorial now.
that tutorial is very practical.
his is a finished board.
the circuit has been fixed, and it is also suitable for teaching.
but for you.
your ideas must be broad, Don't be limited by his thinking.
at this stage, you should learn from the tutorial first.
it's very good as the teaching content.
the tutorial is all about the introduction and use of unit circuit.
in the later stage.
according to the learning and mastering situation, you should design a system by yourself, which includes the keyboard, display, display and display Ad / DA are commonly used in a system.
in the later stage.
according to the teacher's advice, we can see what MCU we need to choose.
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6. I think it should be details.
reliability of welding process, circuit layout, PCB routing, test point placement, circuit installation, etc, All of these may directly give you death sentence.
it was well tested in school.
there was something wrong with the circuit on the way to the test point due to turbulence. If you can't be pure hearted at that time, you'll just go to work and hang up directly.
it's probably the first time I participated in the national competition.
a brother's circuit has just been powered on, After that, the huge electrolytic capacitor exploded and was driven out by the test teacher.
maybe the polarity was reversed when the power was applied.
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I'll wait until I think of anything else.
you should prepare well.
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in fact, there are a lot of contents.
we have to go step by step, It depends on the direction of your topic selection. Now, according to your situation,It's just a rough idea.
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at that time.
it's too early to say that it's not appropriate to divide the work according to the personal situation of your team members.
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the national video game is a very good platform for learning, communication and display for electronic information students.
it can let you learn a lot.
improve your competitiveness, If you have a chance to get in touch with something practical.
since you have such a chance, you should strive for it any school, no matter strong or weak, will have more or less teachers to participate in the national electronic games.
do you think the winning contest selections published by the National Organizing Committee one year after each competition are all students' works?! There are also strong people, but they are only a few.
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so it can be said that, The award of the competition has a direct relationship with your teacher.
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if you can bow to a famous teacher.
congratulations.
a teacher with teacher's ethics.
every student should respect him all his life.
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passion creation and wonderful
Dare to creat & enjoy!..
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of course, you should keep a good attitude.
as for analog electronics, digital electronics, principle of single chip microcomputer, sensor technology, signal and system, automation and other courses, you must learn steadfastly, Recommend a website http://www.nuedc.com.cn/.

Hello! It seems that you are a college student.
generally speaking, those who take part in this kind of competition are majoring in electronics. The advantage is needless to say. It is very helpful for themselves and their future employment, The courses include: electrical circuit foundation, low frequency electronic circuit, digital circuit, high frequency electronic circuit, electronic measurement, principle and application of intelligent instrument, sensor technology, motor and electrical control, signal and system, principle and application of single chip microcomputer interface, etc.
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of course, the subjects to be learned are not final.
the wider the knowledge, the better, It is the product of comprehensive application of various subjects, and it should have very strong hands-on and innovative ability, which can greatly promote a person's hands-on ability, If you can make robots, you'd better understand the mechanical structure.
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a lot of things don't need to be used when you learn.
don't neglect it when you feel useless during the class hours. That's a big mistake.
you'll experience a lot of fun in the process of learning electronic DIY.
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that's good.
freshmen have this idea, Very good<
I only took part in the training in my junior year.
I only took part in the training after a vacation, and got the third class of the province.
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it is recommended that you lay a good foundation now.
just reserve it.
1. Digital electronics.
analog electronics, principle of single chip microcomputer, C language, these are necessary, important and quite important.
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2. Collect relevant information.
such as chip data manual, application notes, source program, production examples, Now the data is accumulated,It's very convenient to use at that time.
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3. Go to the electronic market more.
buy some original parts and do some things by yourself to improve your practical ability.
4. Take a look at the topics of previous electronic design competitions.
learn the advantages of others' designs. It's better to summarize and write your own things.
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5. Find the teacher who used to take electronic design competitions in your school.
tell him what you think, I hope he can give you some advice or help.
6. Persist.
persist, overcome difficulties and persevere you're only a freshman now, and you still need to learn a lot of basic things. Come on, I wish you success; 4. Read more competition papers.
learn other people's plans; 5. Have a good team; 6. More practice, more debugging.
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ha ha.
preparation is a must.
So far, I have participated in several national and provincial competitions.
there are three people in a group in the electronic competition.
the general division of labor is as follows: one is responsible for software (51 single chip microcomputer), one is responsible for hardware (circuit and drawing board), and the other is responsible for software (51 single chip microcomputer), If you want to participate, it is recommended that you find a good partner first.
work well first.
you'd better know your own hardware and software a little.
hardware and software should see some analog and digital electronics.
software should see MCU (important).
... That's it.
wish you success.
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Add: before the competition, you three can take some for reference First, practice your cooperation ability and practical ability.
during the competition, you must communicate more with three people.
take the control class as an example.
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Hardware:
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1. Power modules 12V, 9V, 5V and 3.3V are commonly used.
if you use batteries, you should also consider the boost block. If you use some chips that must be powered by negative voltage, you should also include lm337<
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2. Minimum system and system expansion.
in case of insufficient I / O ports, CPLD should be added<
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3. Drive module.
motor drive L298 is necessary, CMOS can also be considered, stepper motor control can consider adding L297, relay circuit can also be done, using 2803 or 2003.
5. Signal processing module.
for example, we hope that the output of optocoupler is the switching value, but if it is not, we need to add a comparator, so with the optocoupler, the comparator module is necessary (LM339 and LM393 are recommended). For example, if the signal needs to be amplified when it comes back, we need to use the op amp, and properly prepare several op amp chips, such as (tl082 and tl084)<
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6. AD / DA module.
in fact, Da is not widely used in previous competitions in terms of control, but ad often appears, for example, the voltage signal from angle sensor is converted into digital through ad<
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7. Display module.
LCD, nixie tube, led and buzzer are indispensable. Why use LED and nixie tube, and why the buzzer is also a display module? The display here largely means giving feedback, such as making the buzzer call when the balance point is stable<
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8. Keyboard module.
with output, of course, there must be input.
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9. Other: the control class is easy to have a car.
so it is best to prepare a car touch. The motor is necessary, and the deceleration motor, stepping motor and speed measuring motor should be ready; When it comes to the motor, then the coupling should be prepared, which means that mechanical things should be properly prepared when doing electronics; For example, if the wireless communication module is added, the machine, electricity, light, sound and magnetism will all be available.
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Software:.
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1. LCD display program, keyboard input program<2. AD / DA SPI transmission program<3. Data processing algorithm after AD acquisition<
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4. Motor control program.
it is not enough to adjust the speed of the decelerating motor step by step like the stepping motor. When it comes to speed regulation, we need to say the following point: PWM. We need to adjust the stepping motor to the satisfaction through frequency and subdivision speed regulation.
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5. PWM channel and bit rate output<
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6. Delay and time recording (here delay refers to software delay.
here time recording refers to timer)<
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7. Stopwatch, speed measurement, distance measurement, tracking algorithm, obstacle avoidance algorithm, etc<
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8. Some other algorithms that are not necessarily needed: such as double line.
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of course.
good body and mind are also essential.
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in terms of curriculum:
we also need to learn MCU, embedded system, digital circuit, CPLD / FPGA design, C language, assembler, FPGA design, etc Microcomputer interface.
analog electronics should be studied carefully.
signals are not very useful.
CPLD / FPGA programming / simulation with QuartusII.
MCU simulation with Proteus.
analog electronics simulation with Multisim.
MCU programming with keil.
C language and assembly.
embedded Linux kernel is also used.
there is a drawing PCB board.
Protel 99SE, now the latest is called "Altium designer". "In any case, these things will need to be used.
there are many things to learn. It is suggested that you should use what to read ~ and the electronic design competition is a group of several people, work together ~.
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digital circuit.
analog circuit must be able to, MCU experience, if you have DSP or FPGA experience is also very good, However, it depends on whether the laboratory can provide such advanced development equipment.
welders should be excellent.
the ability to draw PCB should also be qualified, Corresponding to understand some electromagnetic compatibility problems.
of course.
also need to understand the theoretical knowledge of the corresponding disciplines.
such as signal processing.
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previous topics of the National Undergraduate Electronic Design Competition.
topics of the first (1994) National Undergraduate Electronic Design Competition.
topic 1 simple CNC DC power supply.
topic 2 multi channel data acquisition system
the second (1995) National Undergraduate Electronic Design Competition topic.
topic 1: practical low frequency power amplifier.
topic 2: design and manufacture of practical signal source.
topic 3: simple radio remote control system.
topic 4: simple resistance, low frequency power amplifier Capacitance and inductance tester.
title of the third (1997) National Undergraduate Electronic Design Competition.
Title A DC stable power supply.
title b simple digital frequency meter.
Title C water temperature control system.
Title D am radio.
title of the fourth (1999) National Undergraduate Electronic Design Competition.
title a measuring amplifier.
title b digital power frequency RMS multimeter
frequency characteristic tester for question CD short wave FM receiver.
e digital voice storage and playback system.
the fifth (2001) National Undergraduate Electronic Design Competition.
a waveform generator.
b simple digital storage oscilloscope.
C automatic round trip electric car.
d high efficiency audio power amplifier.
e data acquisition and transmission system.
F FM radio
The sixth (2003) National Undergraduate Electronic Design Competition topic.
voltage controlled LC oscillator (a topic).
broadband amplifier (b topic).
low frequency digital phase measuring instrument (C topic).
simple logic analyzer (d topic).
simple intelligent electric vehicle (e topic).
liquid drop speed monitoring device (f topic).
the seventh (2005) National Undergraduate Electronic Design Competition topic Sub design competition topics.
sinusoidal signal generator (question a).
integrated operational amplifier parameter tester (question b).
simple spectrum analyzer (question C).
simplex wireless calling system (question d).
suspension motion control system (question E).
numerical control DC current source (question f).
three phase sine wave variable frequency power supply (question g).
the 8th (2007) national college students electronic design competition Design competition topic.
audio signal analyzer (question a) [undergraduate group].
wireless identification device (question b) [undergraduate group].
digital oscilloscope (question C) [undergraduate group].
programmable filter (question d) [undergraduate group].
switching power supply (question E) [undergraduate group].
electric car seesaw (question f) [undergraduate group].
design competition topicIntegrated DC digital voltmeter (question g) [higher vocational college group].
signal generator (question h) [higher vocational college group].
controllable amplifier (question I) [higher vocational college group].
electric vehicle seesaw (question J) [higher vocational college group].
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