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This is a design for intelligent sensor which contains nine shaft sensor, memory chips and wireless transmitter.
The smart sensor is installed on the top of the racket handle. When you open the smart devices APP and bluetooth, the sensor is open too. It will record the way you wave, including the wave speed, the point where the ball hit,and the speed of the ball etc. It is connected with your smart device to show the data in a visible way so that you directly watch it and find out what need to be improved. You can also use the APP to share the record with friends.
Qiqihar university institute of art and art design, China
yuan feng hu,