Low-Cost Pressure Sensor Matrix Using Velostat

This paper presents a characteristic of a 32x32 sensor matrix based on velostat for foot pressure distribution measurements. The sensor has been constructed of dual electrodes placed on the top and underneath velostat as the sensing material. The experimental results show the sensor matrix has relatively linear in Force-Conductance response until 15 N. The system evaluation stage was obtained by comparing the sensor matrix with several other methods implemented in RSON and obtained the performance of the sensor matrix in the form of the comparison of the footprint area with the error value of 7.3% to 68.8%, the average pressure of 7.3% to 68.8%, the maximum pressure 37.6% to 70.7%, body weight of 0.4% to 12.1%, and arch-index with a specificity value of 0.3 and a sensitivity of 0.5.