Abstract: The present disclosure provides a ball tracking system and method. The ball tracking system includes camera device and processing device. The camera device is configured to generate a plurality of video frame data, wherein the video frame data includes image of ball. The processing device is electrically coupled to the camera device and is configured to: recognize the image of the ball from the plurality of video frame data to obtain 2D estimation coordinate of the ball at first frame time and utilize 2D to 3D matrix to convert the 2D estimation coordinate into first 3D estimation coordinate; utilize model to calculate second 3D estimation coordinate of the ball at the first frame time; and calibrate according to the first 3D estimation coordinate and the second 3D estimation coordinate to generate 3D calibration coordinate of the ball at the first frame time.

Abstract: A swivel-jointed voltage-stepping charger comprising a flexible hose, a transformer, a power socket/signal input-output port, an engaging bracket, a supporting frame and two charging stands. The flexible hose is a cylindrical tube that can be bent into a variety of final configurations. The transformer is connected to one end of the flexible hose. The power socket/signal input-output port has a plurality of connection terminals therein and is connected to the other end of the flexible hose away from the transformer. The engaging bracket joins up with the power socket/signal input-output port and the flexible hose. The supporting frame is firmly attached to the engaging bracket. Each charging stand has a signaling port and a ball-in-socket joint installed on the front and back surface of each charging stand. The two ball-in-socket joints are each fastened to a linkage sheath and a linking rod.

Abstract: A swivel-jointed voltage-stepping charger comprising a flexible hose, a transformer, a power socket/signal input-output port, an engaging bracket, a supporting frame and two charging stands. The flexible hose is a cylindrical tube that can be bent into a variety of final configurations. The transformer is connected to one end of the flexible hose. The power socket/signal input-output port has a plurality of connection terminals therein and is connected to the other end of the flexible hose away from the transformer. The engaging bracket joins up with the power socket/signal input-output port and the flexible hose. The supporting frame is firmly attached to the engaging bracket. Each charging stand has a signaling port and a ball-in-socket joint installed on the front and back surface of each charging stand. The two ball-in-socket joints are each fastened to a linkage sheath and a linking rod.