Technical principles and processes of measuring plantar pressure distribution in gait test training system
I. Core components of the system
Pressure sensor
Use high-precision thin film grid tactile pressure sensor, embedded in the insole or measurement platform, to capture dynamic pressure changes in various areas of the plantar in real time.
Data acquisition equipment
Collect sensor signals through scanning circuits, convert pressure values into digital signals and transmit them to the computer system.
Analysis software
Three-dimensional modeling, pressure distribution map generation and parameter calculation (such as step length, pace, center of gravity trajectory) of data, and compare with normal gait database.
II. Measurement principles and processes
Dynamic measurement
When the subject walks or runs, the sensor records the pressure peak, impulse and pressure-time curve of different areas of the plantar (forefoot, arch, heel).
The system uses 3D imaging technology to dynamically display pressure distribution hotspots and movement paths, and identify abnormal gaits (such as center of gravity shift, arch collapse).
Static measurement
The subject stands barefoot on the pressure sensing platform, and the system analyzes the foot shape, the pressure difference between the left and right feet, and the unilateral plantar center of gravity distribution .
Static data is used to evaluate the initial pressure characteristics of abnormal foot structure (such as flat feet and high arches).
III. Data analysis and output
Calculation of key parameters
Including step frequency, stride, single/double support period ratio, pressure center trajectory, etc., to quantify gait symmetry and stability .
Visual report
Generate plantar pressure heat map, three-dimensional pressure distribution model and comparative analysis report to assist in formulating rehabilitation or training plans .
IV. Application scenarios
Rehabilitation medicine : Evaluate foot and ankle injuries, gait abnormalities after stroke, and monitor rehabilitation effects .
Sports science : Optimize athletes’ landing techniques and prevent foot sports injuries .
Orthopedic adaptation : Provide pressure distribution data support for customized orthopedic insoles to verify the correction effect .
Through multi-dimensional data integration, the gait test training system can accurately locate abnormal foot force and provide a scientific basis for personalized intervention.
