Wearable apparatus and a method for calculating drift-free plantar pressure parameters for gait monitoring
US11350851B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2020 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Jul 30, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0247
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present disclosure provides wearable apparatus and method for calculating drift-free plantar pressure parameters for gait monitoring of an individual. Most conventional techniques use different kind of sensors placed in in-sole based wearable apparatus but are costly and not effective in calculating accurate plantar pressure parameters. The disclosed wearable apparatus uses off-the shelf piezoelectric sensors that are widely available in market with less cost. The drift-free plantar pressure parameters are calculated using drift-free static pressure data obtained by numerically integrating acquired dynamic sensor data from the piezoelectric sensors, using a LiTCEM correction mechanism. A 6-DOF Inertial Measurement Unit (IMU sensor) helps in isolating zero-pressure duration indicating when a foot of the individual is in air during a stride, while obtaining the drift-free static pressure data. The disclosed wearable apparatus calculate the drift-free plantar pressure parameters for long duration and facilitates monitoring walking patterns of the individual.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.