Textile-like capacitive pressure sensor and method of mapping the pressure exerted at points of a surface of a flexible and pliable object, particularly of a sail
US6826968B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2001 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Mar 23, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04102
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting the pressure exerted at different points of a flexible and/or pliable object that may assume different shapes, includes a plurality of capacitive pressure sensors and at least a system for biasing and reading the capacitance of the sensors. The requirements of flexibility or pliability are satisfied by capacitive pressure sensors formed by two orthogonal sets of parallel or substantially parallel electrodes spaced, at least at each crossing between an electrode of one set and an electrode of the other set, by an elastically compressible dielectric, forming an array of pressure sensing pixel capacitors. The system for biasing and reading the capacitance includes column plate electrode selection circuits and row plate electrode selection circuits and a logic circuit for sequentially scanning the pixel capacitors and outputting pixel values of the pressure for reconstructing a distribution map of the pressure over the area of the array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.