[China Jiliang University] Electromagnetic curve gun Mao Xiang copy copy

Introduction of works:

My team's electromagnetic curve gun achieved
very The total score for the basic part was 19 rings, and the total score for the performance part was 15 rings. My team's
electromagnetic gun uses high-speed lidar and OPENMV to jointly find targets and implement precise aiming and firing.
The positions of the electromagnetic gun and the ring target are shown in Figure 1 and Figure 2. The electromagnetic gun is placed at the calibration point, with the angle between the initial horizontal direction
of the gun barrel and the central axis being 0°, and the vertical elevation angle being 0°. The annular target is placed horizontally on
the ground. The target's center position is within the range of 200cm≤d≤300cm from the calibration point and the angle a≤±30° with the central axis
.
1. Basic requirements
(1) The electromagnetic gun can shoot projectiles out of the muzzle.
(2) The annular target is placed between 200 and 300cm from the target center to the calibration point, and at a position on the central axis.
Enter the distance d value on the keyboard, and the electromagnetic gun will launch projectiles to this position.
The absolute value shall not be greater than 50cm. .
(3) Use the keyboard to input the distance d between the center of the annular target and the calibration point and the
deviation electromagnetic gun. After one-key startup, the electromagnetic gun will automatically aim and shoot, and the
score will be calculated according to the number of rings hit on the annular target; If it misses the target, no points will be scored.
2. Play part
(1) Place a ring target anywhere within the designated range (with guidance marks, see Note 2).
After one-click startup, the electromagnetic gun will automatically search for the target and bombard the ring target. Scores will be calculated based on the number of rings hit on the ring target. ,
completion time ≤30s.
(2) The annular target and the guide mark are placed on the arc line d=250cm away from the calibration point (
positioned with the bullseye), and the guide mark is at the farthest position. The electromagnetic gun is placed at the calibration point, with the angle between the horizontal direction of the gun barrel
H-3/4 and the central axis a = -30°, and the elevation angle is 0°.
Start the electromagnetic gun with one click. The angle a between the gun barrel
and the central axis in the horizontal direction is from -30° to 30°, and then back to -30°. During
the rotation (no pause in the middle), the electromagnetic gun automatically searches for the target and When shelling a ring target, points will be scored based on the number of rings
hit on the ring target. The time from start to firing is ≤10 seconds.
(3) Others.

2. Requirements for electromagnetic guns
(1) The length of the electromagnetic gun barrel shall not exceed 20cm, and the electromagnetic gun frame shall be fixed on the ground during operation.
(2) The inner diameter of the electromagnetic gun muzzle is between 10-15mm, and the shape of the projectile is not limited.
(3) The muzzle pointing of the electromagnetic gun can be electrically adjusted in two dimensions: horizontal angle and vertical elevation angle.
(4) The electromagnetic gun can use the keyboard to set target parameters.
(5) It can detect the target position and automatically control the aiming and shooting of the electromagnetic gun.
(6) The height of the electromagnetic gun projectile shall not exceed 200cm.
3. Test requirements and instructions
(1) The annular target consists of 10 concentric circles with diameters of 5cm, 10cm, 15cm, ... 50cm, with
an outer diameter of 50cm and a bullseye diameter of 5cm. See Figure 3.
(2) The annular target guide mark is a red circular flat plate with a diameter of 20cm, which is fixed and installed perpendicularly to the target plane at a distance of 30cm from the target center
, and the center of the circle is 30cm high from the target plane. When placing, guide the mark in
the farthest direction from the calibration point. See Figure 1.
Figure 3 Ring target
(3) Click on the impact point to record the interpretation on-site.
(4) Each item can be tested 2 times, and the one with the best quality will be recorded and scored.
(5) During production and testing, protective gear such as protective glasses and hard hats should be worn, and a protective shed should be prepared (
a shed with a roof made of cloth or plastic sheeting in front of the muzzle and with both sides hanging down to the ground, and an anti-reflection guard installed behind the target).
Elastic curtains) and other safety measures. On-site personnel are strictly prohibited from entering the bombardment area when the electromagnetic gun is powered on.