Design of wearable instrumented insole foot pressure measure System

Existing patentable technology related to proposed intervention: At HEAHL lab MANIT Bhopal a insole foot pressure sensor measurement device is designed to monitor the pressure distribution and force exerted by a person's foot while walking, standing or performing other activities. This sensor is placed inside the shoe or insole and is made up of a matrix of 4 pressure-sensitive cells that detect the pressure applied by the foot. The data collected by the foot pressure sensor can be used to analyze gait patterns, diagnose foot disorders, monitor rehabilitation progress, and improve athletic performance. This pressure sensors can be used in sports, physical therapy, podiatry, and biomechanics research. The technology can also utilized for measurement of Zero Movement Points (ZMP) calculation for various subjects (healthy and unhealthy) for calculation of dynamic stability margin. Our prototype consider the all three axis x, y, z to measure the foot pressure and 8 foot contact points. Apart from this, our method considers the dynamic walk with three phases of walk, foot touch, heel strike and flat foot to measure the biomechanics of human walking abnormality.  Early diagnosis of foot pressure through wearable devices can help in   analysing gait disorder patterns, diagnose foot disorders, monitor rehabilitation progress, motor control and improve athletic performance. The existing solutions are not considering the different phase of walking for measuring pressure, they are taking static posture but in our case we have considered the three phases of walk, foot touch, heel strike and flat foot to measure the biomechanics of human walking abnormality. The force plate based solution only considers the Z -axis whereas out solution is low cost of 500 INR, very handy to wear and consider the all three axis and 8 point contact of foot on ground.  The modern shoe industry can commercialise our product to design their shoe and track the health monitoring through wearable watch and monitor the position of person using accelerometer 

Fig: ZMP calculation for various subjects (healthy and unhealthy) using insole mount foot pressure sensor