A solution is provided to enhance motion detection and recognition of moving objects associated with various sports by intelligently embedding motion sensors into sport instruments such as tennis rackets, badminton rackets, baseball bats and golf clubs, that are swung in a three-dimensional (3D) space. The motion sensors embedded inside the sport instruments are securely locked and are detachable for replacement. A motion sensor inserted and locked inside a sport instrument is configured to detect motions associated with movements associated with the sport instrument. The motion parameters associated with the detected motion are collected through the embedded motion sensor and analyzed by a motion detection and recognition system. Based on the analysis of the motion parameters, various types of sports performance reports and performance improvement recommendations are generated for users of the sport instruments.

A tennis training aid includes a glove and a wrist brace. An attachment mechanism extends between the back side of the glove and the wrist brace. The attachment mechanism has a first piece releasably connected to second piece so as to secure the glove, and thus the hand, at a desired angle relative to the wrist brace, and thus the wrist. The attachment mechanism preferably has an adjustable length so as to select the desired angle. Preferably, the attachment mechanism is a strap clip. The tennis training aid can also include both right-handed and left-handed gloves so as to accommodate for users having different dominant hands and allowing for use of the training device for the serve toss and the forehand and backhand strokes.

Provided is a sensor device including a sensor configured to output a vibration datum by detecting a change in a state of a vibration in a first object when a second object touches the first object, a holding section configured to hold, at a portion of the first object which is different from a portion where the second object touches, the sensor in a state where the vibration in the first object is transmitted, and a communication section configured to transmit the single vibration datum detected by the sensor to an analyzing device which identifies a touch position where the second object touches the first object by analyzing the vibration datum.

A badminton intelligent training evaluation system, method and storage medium. The badminton intelligent training evaluation system includes a badminton racket, a serving device, two first image capturing devices and a computing device. When one or more instructions are executed by one or more processing units of the computing device, the one or more processing units perform the following procedures: obtaining and analyzing images of a player on the first half court to obtain a vacancy region with respect to the player instantly; controlling the serving device to serve a shuttlecock to fall in the vacancy region according to the obtained vacancy region; and obtaining an image of the shuttlecock returned by the player until falling on a landing point on a second half court, and determining whether the landing point is out of bounds.