Analysis and Forecast of the 2023 National Electric Competition Instrument and Instrument Competition
Foreword:
The topics in 2023 should not be much different from those in previous years, and they are nothing more than several major categories such as instruments, power supplies, controls, and communications . However, with the development of science and technology in recent years, many new elements have been added to e-sports, such as Internet +, big data, artificial intelligence algorithms, ultra-high frequency, etc. And there has also been a fusion of different types of competition questions . For example, the signal distortion measurement device for question A in 2021 and the Internet-based camera measurement system for question D are the fusion of instrumentation and communication competition questions.
Students participating in the electronic competition also need to pay a certain amount of attention to the above-mentioned new elements and integrated competition questions. I believe that the teacher should also explain the relevant competition question types, pre-competition preparations, training methods, etc. This article analyzes and predicts the relevant content of instrumentation .
1 E-sports national competition time
2023 National Undergraduate Electronic Design Competition Date:
August 2 , 2023 (Wednesday) 8:00 to August 5 (Saturday), 20:00
Judging time for the competition in Guangdong competition area:
August 9 (Wednesday) to 10 (Thursday) , 2023
Notice on the official website of the 2023 National Undergraduate Electronic Design Competition:
2 Analysis of instrumentation competition questions
Instrumentation topics are generally recognized as difficult topics. They are mainly designed based on some functions of voltmeters, spectrum analyzers, and oscilloscopes on the market. However, because the parameters required in such topics have high accuracy, this is also greatly Increased the difficulty of hardware circuit and software signal processing .
However, the instrumentation questions are relatively the easiest to start with, and the other questions are relatively not so simple to start with. For students who lack experience in the competition, if you don’t care much about the accuracy, you can just measure the relevant parameters (of course, if you want to measure accurately, it is difficult to measure the instrumentation), we can do it more easily Hands-on design is a friendly topic for students who are not familiar with electronic design competitions .
Summary of previous instrumentation competition questions:
The summary of instrumentation and meter competitions in the electric competition and national competition can be downloaded in the blog resource directory: (If you can’t download it, you can chat with the blogger in the paper area or privately)
1995-2021 National Electric Competition Instrument and Instrument Competition Summary
Instrumentation competition questions (31 questions):
1. Design and manufacture of practical signal sources (1995 Question B)
2. Simple resistance, capacitance and inductance tester (1995 Question D)
3. Simple digital frequency meter (1997 Question B)
4. Effective digital power frequency Value Multimeter (1999 Question B)
5. Frequency Characteristic Tester (1999 Question C)
6. Simple Digital Storage Oscilloscope (2001 Question B)7. Waveform generator (question A in 2001)
8. Low-frequency digital phase measuring instrument (question C in 2003)
9. Simple logic analyzer (question D in 2003)10. Sine Signal Generator (2005 Question A)
11. Integrated Operational Amplifier Parameter Tester (2005 Question B)
12. Simple Spectrum Analyzer (2005 Question C)
13. Audio Signal Analyzer (2007 Question A Undergraduate Group )
14. Digital Oscilloscope (Undergraduate Group with Question C in 2007)15. Integral DC digital voltmeter (2007 G-question higher vocational group)
16. Signal Generator (2007 Question H)
17. Simple Digital Signal Transmission Performance Analyzer (2011 Question E)
18. Simple Automatic Resistance Tester (2011 Question G)19. Simple frequency characteristic tester (question E in 2013)
20.80MHz~100MHz Spectrum Analyzer (2015 Question E)
21. Digital Frequency Meter (2015 Question F)
22. Remote amplitude-frequency characteristic test device (question H in 2017)
23. Single-phase electrical analysis and monitoring device (question K in 2017)
24. Line load and fault detection device (question C in 2019)
25. Simple circuit characteristic tester (question D in 2019)
26. Internet-based signal transmission system (question E in 2019)
27. Paper counting display device (question F in 2019)
28. Signal distortion measuring device (question A in 2021)
29. Internet-based camera measurement system (question D in 2021)
30. Appliance analysis and identification device (question H in 2021)
31. Periodic Signal Waveform Identification and Parameter Measurement Device (2021 Question J)
3 Prediction of instrumentation competition questions
1) Combining with "Internet +"
It can be observed that the topic of electric competition has appeared in the past two inspections of Internet-related knowledge, and the idea of the Internet and "Internet of Everything" still has considerable attention in the field of electronic applications today, and the Internet can be combined with instruments. The instrumentation of the device can be well coordinated and integrated.
The modules that need to be learned include the Bluetooth module and the WiFi module . Mastering one of them can handle it. The following article introduces the WiFi module-ESP8266.
Data transmission between ESP8266WiFi module and Android APP (1)---hardware wiring
2) Detection of electrical parameters such as voltage, current, capacitance, etc.
Looking at the competition questions over the years, the detection of electrical parameters such as voltage, current, frequency, and capacitance will always appear in different forms, and have higher and higher precision requirements , and more and more detection and analysis parameters. trend. Regardless of whether such questions will appear in this competition, the measurement methods of electrical parameters such as voltage and current also need to be understood. This is a knowledge point that cannot be ignored in the field of electronics.
Need to learn how to use the electric energy metering chip CS5463, SUI-101A AC transmitter, mastering one of them should be enough to cope with the competition, the following article is to introduce the SUI-101A AC transmitter module.
Super easy-to-use detection module---SUI-101A AC transmitter
3) Signal processing
It has been indispensable for signal processing over the years, and the measurement of frequency-amplitude characteristics and related parameters is indispensable for signal processing . It is very important to master the test identification of signal waveform and the measurement of parameters such as frequency, peak value and duty cycle . If you can do signal processing, then you can quickly start with frequency measuring instruments, digital oscilloscopes, amplitude-frequency characteristic testing devices, signal measuring devices and other related problems, and find solutions to the competition problems.
It is necessary to learn the FFT algorithm (fast fourier transform) , and refer to previous signal processing related topics. It is best to be able to reproduce related topics before the competition, and at least understand the methods and principles of signal processing . There are a lot of related content and introductions on the Internet, so you can learn about it.
Amplifier-related topics have appeared in the previous undergraduate group, and in the last specialist group, but not in the undergraduate group. It is expected that this year there will be amplifier-related questions.
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