Design for running auxiliary trainer based on RF technology

One kind of running auxiliary trainer that measures stride length and frequency is studied, which consists of racetrack reader and portable RF card. TI´s MSP430 SCM is adopted as RF card that saves identity information and measurement of strides is realized though mercury switch. Reader of high-power H bridge diver makes long distance and high reliability information transmission come true. Results show that the system has high sensitivity, security and accuracy and reliability of measurement data. So it can attain a clear effect and a significant application value in sports training and seedling selection of some teenager sports schools.