Science and Technology Cultural Festival｜Successful Holding of the Second “Communication Cup” Contest of the School of Mechanical Engineering and Electronic Information in 2023

(Reported by Li Xiangbo) On the afternoon of June 30, 2023, the final of the Second “Communication Cup” Electronics Design Contest of the School of Mechanical Engineering and Electronic Information was held at Room 302 of No. 3 Teaching Building. Teachers from the Department of Communication of the School of Mechanical Engineering and Electronic Information, including Hao Guocheng, Wang Wei, Zhou Feng, Zhong Liang, Wu Rangzhong and Li Xingmei, participated in the contest acceptance.

This contest is a featured project of the “Science and Technology Festival”. It took one and a half months, including progress review by the person in charge of the preliminary competition and the acceptance by the person in charge of the final competition and the teachers. A total of 25 teams registered, 17 teams entered the finals, and a total of 15 teams who entered the finals completed the acceptance. The competition topics are divided into regular topics and enterprise-set topics, involving sensor technology, embedded programming, hardware circuit design, modeling and simulation, algorithm design, and other fields.

The “Communication Cup” Electronic Design Contest is a technology competition that combines fun and knowledge, aiming to cultivate “hands-on”, “innovative” and “collaborative” talents, to create a better atmosphere for scientific and technical innovation, to fully integrate professional learning with innovation and entrepreneurship, and to open the door to scientific and technical innovation for students of this University.

1. Enterprise-set topics

Enterprise-set topics refer to the topics jointly proposed by the School of Mechanical Engineering and Electronic Information and enterprises, research institutes and other organizations. The School is entrusted by enterprises to carry out in-depth research on professional topics and projects, and the enterprises provide financial and hardware support and utilize the platform of the School to innovate scientific and technological achievements, so as to better realize the practical application of relevant technologies.

01| Design of aerial magnetometer compensation software for aircraft

The topic requires the design of aerial magnetometer compensation software for aircraft with Matlab. Establish the model of aircraft magnetic interference field by understanding the reasons for the generation of aircraft magnetic interference field, and the target software can correctly display the data of total magnetic field and three-axis fluxgate, and calculate the standard deviation, improvement rate, and FOM value before and after the compensation through formulas and display them on the software.

02| Cesium optical pump Larmor frequency meter

Design and make a Larmor signal frequency meter to measure the signal frequency by STM32 input capture as well as Fast Fourier Transform, and obtain the magnetic induction intensity based on the measured signal frequency.

03| Intelligent analysis tool for interface software operation process

This topic requires using Python to design an analysis tool with the ability of interface scene adaption to recognize the process of interface operation and record the operation information. Use intelligent algorithms to correctly identify the process information of mouse click interface controls in the given video, and record the data of mouse click operations in the video, mainly including time and name of the clicked control.

04| Antenna simulation

It requires using COMSOL to build an antenna model simulation to meet the antenna gain and standing wave ratio requirements.

05| Electromagnetic secondary induction transceiver system

The topic requires the design and implementation of power transmitting circuits as well as receiving circuits for the detection and sensing of ambient underground conditions.

2. Regular topics

The regular topics are selected from the topics of previous National Undergraduate Electronics Design Contest, which are related to the communication major.

06| Signal distortion measurement device

This topic requires the design and manufacture of a signal distortion measurement device to collect periodic signals from functions and arbitrary waveform generators, measure the total harmonic distortion (THD) of the input signal, and display it on the mobile phone.

07| Amplitude modulation signal processing circuit

It requires the design and production of an amplitude modulation signal processing experimental circuit, to realize the demodulation of AM signals, with no significant distortion in the demodulated output signal, and to achieve stable output through automatic gain control (AGC) circuits. 

08| Adaptive filter

This topic requires the design and production of an adaptive filter that outputs signals with unequal frequencies through the signal source and interference signal source. Based on the characteristics of the interference signal, methods such as interference cancellation are used to filter out the interference signal in the mixed signal and restore the waveform of useful signals.

09| Digital analog signal mixed transmission transceiver

The topic requires a wireless transceiver for mixed digital-analog signal transmission over the same channel. Using wireless transmission, the transmitting end of the transceiver completes the combination processing of digital and analog signals, and modulates and sends them on the same channel. The receiving end of the transceiver completes the reception demodulation, and separates the digital signal and analog signal. The digital signal is displayed by Nixie tube, and the analog signal is observed by oscilloscope.

After intense acceptance work, this “Communication Cup” Electronics Design Contest has come to an end. In this competition, a total of 2 first prizes, 3 second prizes, and 4 third prizes are awarded, with school-level certificates and related rewards. The results are hereby announced as follows:

The Contest has come to a successful conclusion! Whether you are just starting a competition and scientific research, or experienced students, regardless of the results, you have gained insight and responded to your expectations when participating in the competition. “Life is like fireworks, it cannot always hang in the sky, as long as it has been brilliant before, it will not be wasted.” We will definitely find our own brilliance on the road ahead!

Attached picture: Test Scenarios