Gait analysis system and method

The invention discloses a gait analysis system and method. The gait analysis system comprises an intelligent terminal and two signal collection systems, and each signal collection system comprises a carrier, a pressure sensor, an acceleration sensor, an angular velocity sensor, an MCU and a battery. The MCUs are in wireless connection with the intelligent terminal through Bluetooth communication. The analysis method comprises the steps that firstly, collected pressure signals are filtered twice; secondly, initial grounding signal detection is conducted, an initial pressure threshold Th is obtained, then middle threshold detection is conducted, and finally a stand ending threshold is judged; thirdly, a rectangular Cartesian coordinate system is built; fourthly, the point location (x, y) of the center of a current pressure is solved; fifthly, a half sole varus-valgus coefficient and a heel varus-valgus coefficient are calculated; sixthly, the symmetry SI is judged; seventhly, the coefficient of variance CVt is