Aiming at the defects of easy to be interfered by environment

need extra RC filtering circuit

ADC

external memory

limited data quantity exit in gait feature extraction system when uses sensor whose signals output is analog form.A gait feature extraction system based on digital output is designed.The datas output by AMI602 are transmitted and received by CC1110 microprocessor.The received data is transmitted to computer by serial port and processed.The characteristic are extracted by the analysis of the wave of the acceleration signal of each axis and the change of angle of pitch

angle of inclination.The tests show that this system can reflect the characteristic signal clearly on gait and have a strong capacity to avoid external interference

high precision

easy to operate

good flexibility.