Pressure sensing device and method

US12061126B2 · kind B2 · utility

Assignee

• TANGI0 LIMITED · GB

Inventors

• Ilan Johan Eduardo Olivarez Correa · London, GB
• Chia-Hung Lin · Xishizhuang, TW
• Francesca Perona · London, GB
• Jose Rodriguez Javaloyes · London, GB
• Victor Bellvert Giner · London, GB
• Liucheng Guo · London, GB
• Ming Kong · London, GB

Key dates

• Filing date: Feb 24, 2020
• Grant date: Aug 13, 2024
• Expiry date: May 23, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2203/04107
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A pressure sensing device (1000) comprises first and second electrodes (10, 20) spaced from each other by a distance. At least one of the electrodes is formed of/comprises a unitary piece of non-metallic conductive material. The distance is changeable in response to a pressure/force applied to the first and/or second electrode. The device comprises a measurement module (500) connected to the first/second electrode at a plurality of sensing points (S1 . . . ). The measurement module is configured to measure a change in capacitance between the first and second electrodes, in response to a change in the distance when a pressure/force is applied to the first and/or second electrode, at each sensing point individually and/or at all sensing points simultaneously. The measurement module is configured to determine the location, area and amount of applied pressure on the first and/or second electrode from the individual measurements, and/or the amount of the applied pressure from the simultaneous measurement.