Development of SMART-LAP Watch for Runner

Abstract

  We have developed SMART-LAP which is a new function of digital watch for marathon runners. The watch can automatically record the passing time of the timing system laid in the marathon course. We devised a method to detect the passage of the timing system from the trigger signal and examined arrangement of the receiving antennas from the analysis of the watch position during running. Furthermore, we optimized the receiving sensitivity and detection algorithm to achieve accurate time measurement.