Detection principle of plantar pressure distribution system
1. High-sensitivity sensor array
The plantar pressure distribution system captures the vertical reaction force between the sole and the contact surface in real time with an accuracy of up to kilopascals through a high-density pressure sensor array (such as capacitive or piezoresistive sensors) embedded in the insole or measurement platform.
These sensors can dynamically record the pressure changes in each area during standing, walking, running or jumping, and generate continuous time series data.
2. Data acquisition and three-dimensional modeling
The system combines pressure data with motion capture technology, reconstructs the three-dimensional pressure distribution map of the sole through software algorithms, and analyzes key parameters such as the center of pressure (COP) trajectory, peak pressure, and pressure-time integral.
For example, dynamic testing can quantify the force ratio of the forefoot, midfoot, and hindfoot during the gait cycle, and identify areas of abnormal pressure concentration (such as high-risk areas for diabetic foot).
3. Biomechanics and pathological analysis
Combined with the human anatomical model, the system can evaluate the arch morphology, gait symmetry and coordination of the biomechanical chain of the lower limbs, providing a quantitative diagnostic basis for foot diseases (such as flat feet, high arches) and abnormal whole-body posture (such as scoliosis).
The role of children’s gait detection
1. Early screening of foot development abnormalities
Children’s plantar pressure detection can identify problems such as arch collapse, inversion and valgus, and uneven pressure distribution.
For example, children with flat feet show a significant increase in midfoot pressure, while high arches show overload of forefoot and hindfoot pressure . By comparing the standard pressure distribution model, the degree of foot development deviation can be determined to guide early orthopedic intervention .
2. Prevention of sports injuries and posture problems
Abnormal gait (such as inward and outward toe) may lead to compensatory torsion of the knee joint and the risk of scoliosis.
Dynamic detection can quantify step length, step frequency and foot landing angle, and combine with pressure center trajectory analysis to develop personalized rehabilitation plans (such as orthopedic insoles, balance training) to correct biomechanical imbalances.
3. Monitoring intervention effects and disease management
For children with foot diseases (such as congenital clubfoot), regular gait detection can evaluate the effect of orthotics or surgery and optimize treatment plans. In addition, diabetic children can prevent foot ulcers and reduce the risk of amputation through plantar pressure monitoring.
The plantar pressure distribution system achieves accurate detection based on sensor arrays and biomechanical modeling, and its data can quantify the functional status of the foot.
In the field of children’s health, the system has become a core tool for preventing foot and spine diseases and improving motor function through early screening, gait optimization and long-term monitoring.
