In order to better master movement activists

as far as possible reduce damage due to movement through play

a pneumatic fitness equipment is designed. To calculate the actual tension beared by users

through actual cylinder pressure and cylinder piston displacement detected by Hall sensors

and combined with record of cylinder piston movement number to calculate heat quantity consumption of sporter

more intuitively show movement of sporter. Through test

the Hall sensor is sensitive and detection result is accurate

and system stability is good

and has higher practicability.