Two days ago, I just finished writing an article on the suggestions for components required in all directions of the electric competition. As a result, I came out before I published the official document!
As a result, the article I wrote was not released, so I thought of writing another article for you to judge the form of this year's questions based on the components given by the official this time!
Make a statement first! My level is also average, so I just want to share my thoughts. If it is different from the final question, then there is only one truth. The organizer saw this article and temporarily changed the question!
2021 Electric Competition Main Components List (Undergraduate Group)
There's actually a ball in the trough? What are you doing?
And NdFeB magnet discs? What are you doing?
Lithium-ion battery with its own management function? What is it?
Don't be afraid, Abin is going to talk about how these gadgets might come up today. Sit tight and hold on, Abin is about to leave!
What the hell is the ball doing?
First of all, everyone should make it clear that guessing questions can only start from the kind of representative things. For example, after getting the list, many things can be removed, and only a few things that you think are not common, such as the small balls above, Magnet sheet, lithium battery with management function.
Key words of pellets : transparent; hollow; plastic; diameter 20~30;
At present, the most suitable ready-made agriballs that most people can find according to the requirements of the game should be this!
Possibility one:
In fact, as early as 2017, the electric competition also used the ball once, but the ball in that year required the ball to be made of hard and uniform material, and the diameter of the ball should not be greater than 2.5cm;
And this year's ball requirements are hollow transparent ball diameter 20 ~ 30cm
Comparing the requirements for the ball in the past two years, it is not difficult to find that these two balls seem to have reversed characteristics! In 2017, a hard ball is required, but in 21, a hollow transparent ball is required; in 2017, it is emphasized evenly, but in 21, no emphasis is placed; in 2017, a small ball is required, but in 21, a large ball is required;
The ball in 2017 is used as a rolling ball control system, which is to control the position of the ball on a tablet, so that the ball can roll to the corresponding position as required, so you can go back and think about the 2017 list. Is it reasonable that the ball should be firm (in fact, it is heavy), uniform, and not too large. So this year's ball will definitely not be used for this question! (External control ball excluded)
Possibility two:
Internal control ball system: You can see that the balls given in the list emphasize hollow balls very much, and they also need to be transparent, so there should be something inside!
The following is a picture I found when I searched for spherical robots on the Internet. Seeing this picture really made my face light up!
Damn, I feel like I'm very close to the question! Comrades, do you feel that this ball is really used like this!
But！But！But！
Everyone carefully look at the size of the ball required by the game title?
Why doesn't it seem to fit in?
Isn't this right? If the size of the cart given in the list is exactly the same as the size of the ball (the cart can fit in the ball), then it can be seen at a glance that the cart is going to be loaded in the ball! So it is reasonable to be able to fit in, but not fully fit in! (Internal control ball reserved)
Nonsense conjecture three:
Many people say that this year may be a drone chasing the ball. In fact, this is a joke. Every year, there will be a drone and a ball. Every year, someone predicts that the drone will chase the ball, but no one guesses it right in a year! That's why some people joked that it might be a drone chasing the ball. Compared with previous years, the ball is too small. Is this year's ball big enough to be able to chase the ball with a drone? If there is still no drone chasing ball project this year, it will definitely be there in 2023!
Square acrylic board
The size of this square acrylic board is completely consistent with the size of the drone. One requirement must be greater than 450mm, and the other requirement is less than 450mm. Isn't this perfect, the drone will stop at a fixed point.
Of course, this is just a conjecture. It is also possible that this is a set given to you by the organizer, and it will give you a coincidental size, so that you think that the two of them are used together, and then I will give you a surprise!
Angle measurement
This year's components and instrumentation are all signs that there should be angular measurements this year. Let's take a look at what components and instruments are related to angles!
Protractor, joint angle measuring ruler, angle sensor
To be honest, only these things can't do much, but if you add a laser pointer (used with a protractor), is it possible to control the changes of other devices according to the change of the angle of the laser pointer.
Analysis of power problems
The general, maybe, should, and possibly two directions of the power supply category are the charging and discharging of the battery on the one hand, and the conversion of electricity on the other hand.
The application of this point has already been applied in current electric vehicles, so this aspect is still possible. Of course, I do the control, and I don't have a deep understanding of the power supply problem, so I won't give you a prediction here, so as not to mislead the children. If there is a big power supply, you can discuss it together in the comment area!
How to prepare?
After the list is out, you can start to prepare the use of the corresponding modules, write the corresponding drivers, draw the circuit for the circuit, and make the board for the board.
The drone friends first adjust the drone, the image recognition of the camera, the open mv is basically a drone; the preparation time before the competition problem, you can do the previous problems, such as car chase, Distance alarm, line patrol, counterweight hovering, etc. Invariably the same, and in the end, are almost variants of these basic projects.
The small partners in the control group can write the code of the angle sensor and how to use it. If there is no accident, the angle sensor should be the device of the students in the control group.
In addition, nixie tubes and display screens are basically used in every direction, so you should prepare the code in advance, and use it directly after the competition problem.
PID, rectifier circuit, filter circuit, amplifier circuit and other basic circuits should be prepared in advance. Don't wait to write on the spot when you need it. It's a waste of time.
Servo, stepper motor and brushless motor must be prepared. Although some motors are not listed for you on the list, they are basically necessary every year.
The information of the electric competition has been sorted out for you, and you can get it for free by replying to "electric competition" on the public account!
Most importantly! ! !
The framework of the report must be written in advance!
And when the question comes out, someone must be responsible for writing the report!
In addition, the official competition only lasts for four days and three nights. The three people must have a good division of labor. Each person is responsible for what part, who will test, who will record, who will write the report, and some details must be arranged. Don't do the same thing all at once, but the necessary discussions are also needed, and the sparks generated by the collision of thinking may light up new ideas.
Try not to change the plan during the competition. When you have to change the plan, you must make sure that the experience plan is feasible, otherwise you will not have time to change the new plan. Here are some suggestions for you:
1. Don't start working on the plan before you are not sure whether it is feasible; 2. A plan must be implemented after the whole team has passed it. When there is a disagreement, don't start implementing it rashly, otherwise it may cause the split of your entire team;
3. Changing the plan must be done when the original plan is determined not to work, rather than thinking that the current plan is too difficult. If another plan is used, it must be simple, and this idea is definitely not acceptable;
4. Teammates should understand each other, tolerate each other, and learn from each other's strengths. After all, electric competition is not a battlefield of one person, but a world of three people;
Electric competition information
The information of the electric competition has been sorted out for everyone and placed in the background of the public account. You can follow the WeChat public account [Embedded Yuexiang Garden] and reply to "electric competition" to get it for free!
7. Join the exchange group
Welcome to join the 2021 e-sports QQ exchange group, come and discuss and learn with other friends!
Group number: 828715657
