US Patent 9283434 Method of detecting and prompting human lower limbs stepping motion

A method of detecting and prompting a human lower limbs stepping motion is applied to an exercise machine with pedals installed to both left and right sides of the exercise machine and provided for detecting a pedaling force while stepping the pedals. In the method, a force sensor is installed to the pedals, such that when an exerciser steps on the pedals by feet alternately, the force sensor detects, generates and transmits an electric signal to a control unit and converts the electric signal into a pedaling force value, and the control unit compares the pedaling force value with a predetermined value and prompts a message when the pedaling force value is beyond the range of the predetermined value.