Guess the question about the list of materials for the undergraduate group of the electronic competition: Sound source localization system

bqgup

Guess the question about the list of materials for the undergraduate group of the electronic competition: Sound source localization system [Copy link]

 

Sound source localization system

The list of required materials is as follows:

MCU Development System

DSP Development System

Embedded development system (such as Chuanglong 5708 or Chuanglong 5728 which integrate ARM core, DSP core and IPU core)

5m measuring tape

AD/DA Converter

microphone

buzzer

Piezoelectric ceramic buzzer

speaker

Square acrylic plate

General requirements of the topic:

Place a microphone array on the acrylic plate, use its own single-chip computer and DA module to drive the speaker to make sound, and use the microphone direct cross-correlation algorithm to calculate the delay settlement sound source position. A DSP development board is very necessary and should be prepared because FFT and IFFT transformations are required and the amount of data processed is relatively large.

soso

It's the national season again. Do you want to bring others to participate or participate by yourself?

sdkjlwc

Why does acrylic sheet have thickness requirements?

zebra2222

Can you predict a wave of control questions?

okhxyyo

soso posted on 2021-7-27 09:30 It's the national season again. Do you want to bring others to participate or participate yourself?

The lead should be

w494143467

It feels more advanced than before!

s______________

The OP has a deep understanding of this and has done a lot of research. I look forward to sharing further.

bqgup

okhxyyo posted on 2021-7-27 19:22 Leading people should be

I won't be participating this year, I'll just give you some guidance.

bqgup

zebra2222 posted on 2021-7-27 15:06 Can you predict a wave of control questions?

I see that many control questions predict spherical robots. I suggest not to guess the questions when the competition list is released, because the organizing committee releases the list of materials, which will guide everyone to prepare the competition materials on the one hand, and will also guide everyone to guess the questions on the other hand. Guessing questions may not be accurate and it is easy to waste time. Now prepare the list, the circuit module and the driver, take a good rest, and prepare for the competition.

okhxyyo

bqgup posted on 2021-7-29 20:13 I will not participate in the competition this year, I will just give some guidance

Come here and give some guidance to the netizens who are going to participate in the competition. What do you think the contestants should do at this time?

gmchen

The topic of sound localization has already appeared in the 2012 TI Cup competition for college students' electronic design in 15 provinces. If a similar topic is given again this time, the requirements will be higher.

In addition, this type of question does not have high requirements for the substrate, and it does not necessarily have to be an acrylic board. I think acrylic boards are more likely to be used for automatic control questions.

gmchen

If we must associate acrylic plates with sound positioning, it would be something like this: stick a piezoelectric ceramic sheet to the edge of the acrylic plate, propagate sound waves inside the acrylic plate, press your finger on the acrylic plate, and detect the position of your finger, which is equivalent to a touch screen.

bqgup

gmchen published on 2021-7-31 08:01 If we must associate the acrylic plate with sound positioning, it is such a situation: stick the piezoelectric ceramic sheet on the edge of the acrylic plate, and the sound wave...

This is more difficult, what a creative idea!