A new sensor applied to measure shot put throwing force

A new sensor is introduced to measure the three-axis force of shot put thrown in real time. An elastic body based on E-style chaff was embedded in the shot-put inner part. The new sensor has the same characteristic in mass, diameter and center of gravity with the ordinary shot put. And the system can use it to measure the strain of the elastic body, then by calibration and compensation the strain could be transferred into the shot put throwing force. The measuring results are highly accurate, work reliability and better anti-jamming in practice and the new sensor can be applied in the daily training. Since the shot put is deflected and vibrated during throwing, measurement of force applied to the shot put will provide important information for the shot putter in how to better throw the shot put.