Design of wireless force measuring instrument for sports based on STM32

Nowadays, the data acquisition system is applied in all aspects of production and life, and as an important indicator, the research on the pressure acquisition system is particularly important. This paper proposes a pressure acquisition system that can collect four pressure signals, the sampling rate of a single channel can reach 150Hz, and the range is 30 to 1000 kg. The pressure acquisition system adopts a full bridge sensor, which has the characteristics of good linearity and high sensitivity. The pressure acquisition system can be sampled by the host computer through Bluetooth control. Experiments show that the comprehensive accuracy of the system is lower than that of the current common systems, and the standard deviation of the continuous sampling of the system is less than 0.39, which meets the design requirements.