Patent ID: 11920996
Assignee: CASE WESTERN RESERVE UNIVERSITY
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 0:
1. A system comprising:
a device housing a pressure sensor array,
wherein the pressure sensor array comprises a piezo-resistive material and a uniform distribution of a plurality of flexible circuits;
wherein each of the plurality of flexible circuits comprise at least one wire connected to a common port;
wherein the device and the pressure sensor array are customizable to different sizes for gait analysis and/or tactile sensing applications; and
wherein each of the at least one wire from each of the plurality of flexible circuits is positioned to ensure that each of the plurality of flexible circuits is connected to the common port even when customized so that every one of the plurality of flexible circuits remaining on the pressure sensor array as full flexible circuits and partial flexible circuits is usable after the pressure sensor array is customized; and

a signal processing circuit to estimate a force applied to the pressure sensor array based on a resistance of each portion of the pressure sensor array represented by a pair of flexible circuits,
wherein the signal processing circuit comprises at least one multiplexer, a voltage divider circuit, an analog-to-digital convertor, a control unit, a power management unit, and a data transmission unit, and
wherein the signal processing circuit calculates the resistance of each portion of the pressure sensor array represented by the pair of flexible circuits based on a resistance of a fixed resistor of the voltage divider circuit multiplied by a ratio of a voltage of the portion of the pressure sensor array and a difference between a source voltage of the voltage divider circuit and the voltage of the portion of the pressure sensor array.