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Online competition complaint: are the car models of two teams at the same match point the same?

2021-08-25 06:24:39 Zhuo Qing

Jane Medium : This paper analyzes the problem of complaining about car models in the online competition of the 16th National College Students' intelligent car competition , The preliminary conclusion of the analysis is given .

key word The smart car race , Online competition , Reporting problems

 

§01 cast Litigation problem


One 、 Source of complaint

   teacher , Hello! . I report as like as two peas in the two schools . The prospect of electromagnetic car models in two schools cannot be the same . After our careful judgment , These two schools are a car model competition .

▲  chart 1.1  Report the content of the SMS

▲ chart 1.1 Report the content of the SMS

Two 、 The problem involves video

Here are the video clips of the two car model competitions involved in the complaint :

▲  chart 1.2   Operation of the first vehicle model

▲ chart 1.2 Operation of the first vehicle model

▲  chart 1.3   The second model car race

▲ chart 1.3 The second model car race

 

§02 ask Question survey


   These are the models of two schools at the same race point . The following is an analysis by asking for their model technical report and model technical checklist .

▲  chart 2.1  The two teams in the game

▲ chart 2.1 The two teams in the game

One 、 Technical report

   by force of contrast , The technical report of Shandong Electric Power College is very simple , The description is not detailed . It should be that we haven't started preparing the technical report yet , A very simple technical report submitted temporarily , This report cannot meet the requirements of the competition for technical reports .

   The technical report of Shandong Engineering Vocational University is relatively complete and detailed . The technical report documents meet the requirements of the competition for technical reports .

▲  chart 2.2  Technical reports of the two teams

▲ chart 2.2 Technical reports of the two teams

Two 、 Model check list

1、 Top view and side view of vehicle model

   Firstly, the appearance of the two car models is compared and analyzed , See if they are similar .

(1) Top view of vehicle model

   The following is a top view of the two models in the technical checklist , You can see that their overall layout is very similar . It's hard to detect their differences from a distance . But the two models are different in terms of electromagnetic sensor leads .

   A model car is well fixed , A car model lead is not bound .

▲  chart 2.3  Comparison of top view of two car models

▲ chart 2.3 Comparison of top view of two car models

(2) Side view of vehicle model

   The following is a side view of the two models . From their appearance , Very similar . There are only differences in leads .

▲  chart 2.3.1  Side view of the car model

▲ chart 2.3.1 Side view of the car model

(3) comparative analysis

   Because the videos submitted by the two models are very blurred , It's hard to see the details of the car model from the video pictures , In particular, the status and color of the leader . Therefore, it is not easy to judge whether the model of the competition is consistent with the model given in the model technology checklist .

▲  chart 2.3.2  The shape is compared with that in the competition video

▲ chart 2.3.2 The shape is compared with that in the competition video

   But watch the content of the two models running from the video , You can still see two obvious differences :

  • difference 1 : Sensor leads are different . The sensor lead is obviously loose in one vehicle model ; The other sensor leads are basically fastened to the sensor support .
  • difference 2: Model motor drive plate LED The number is different. . A car membrane can clearly distinguish that in the process of operation , There are two bright lights on the motor drive plate behind the model LED; The other model has only one bright LED. This can also be seen from the difference between the motor drive plates of the two models behind .

   therefore , According to the appearance analysis , Between two running models There are still some differences .

2、 auto salon girls PCB chart

(1) Shandong Electric Power College

   The circuit board in the vehicle model checklist submitted by Shandong Electric Power College , Only motor drive PCB Front view of , The main control board is missing 、 Design of electromagnetic signal processing circuit board PCB chart .

   In addition, there are some problems that do not belong to the model itself in the model checklist PCB.

▲  chart 2.2.1  The circuit board on the technical checklist

▲ chart 2.2.1 The circuit board on the technical checklist

(2) Shandong Engineering Vocational and Technical University

   On the technical report submitted PCB The front and back photos are clear , complete , And... On the model PCB Can be well matched one by one .

▲  chart 2.2.2  On the model technical checklist PCB chart

▲ chart 2.2.2 On the model technical checklist PCB chart

3、 Schematic diagram

(1) Electromagnetic signal amplification and detection circuit

▲  chart 2.3.1  Electromagnetic signal amplification circuit

▲ chart 2.3.1 Electromagnetic signal amplification circuit

(2) Dual motor drive circuit

▲  chart 2.3.2  Motor drive circuit

▲ chart 2.3.2 Motor drive circuit

(3) Schematic diagram of main control circuit board

▲  chart 2.3.3  Circuit diagram of main control board

▲ chart 2.3.3 Circuit diagram of main control board

 

§03 transfer Check the conclusion


One 、 Whether the two models are the same ?

   Because the two car models are very similar in structure , In the submitted video, it is difficult to clean the details of the identified car model , Therefore, there is the possibility of misjudging two car models as one car model .

   By comparing the details of the two car models in the video , I can still detect the difference between them :

  • The difference in fixing the lead of electromagnetic sensor ;
  • On the motor drive board LED The difference in the number of lights ;

   in summary , We can preliminarily judge the models in these two competitions Not belonging to the same model .

Two 、 Whether the submitted materials are qualified ?

1、 Video material

   The two video materials used for judgment are difficult to clearly reflect the details of the race model , It can only reflect the running integral of the vehicle model , These two videos meet the requirements .

   For the details of the car model of the competition, it is necessary to further obtain the Tencent conference picture at that time to determine the details of the car model ;

2、 Model check list

   The vehicle model checklist submitted by Shandong Electric Power College is in PCB There are deficiencies and errors in the front and back diagrams .

   The circuit schematic diagram in the two vehicle model checklists is not clear enough ;

3、 Technical report

   The technical report submitted by Shandong Electric Power College is too simple , Does not meet the technical reporting requirements of the competition .


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