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1. (WO2018039700) A PRESSURE SENSOR

Pub. No.:    WO/2018/039700    International Application No.:    PCT/AU2017/000178
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Thu Aug 31 01:59:59 CEST 2017
IPC: G01L 1/20
G01L 9/02
Applicants: THE UNIVERSITY OF SYDNEY
Inventors: ZHAI, Chongpu
GAN, Yixiang
HANAOR, Dorian
PROUST, Gwenaelle
EINAV, Itai
Title: A PRESSURE SENSOR
Abstract:
A pressure sensor (100) comprises a container a container (110) and a plurality of granules (120) disposed within the container (110). The plurality of granules (120) has a closely-packed interrelationship defining a plurality of inter-granular contact points (130), each contact point (130) having a contact surface area. At least some of the plurality of granules (120) comprise a conductive material. The plurality of granules (120) are each deformable, under the application of pressure, to cause a variation in the contact surface areas of the inter-granular contact points (130), the variation resulting in a change in resistivity of the plurality of granules (120), and the pressure sensor (100) is configured to measure the amount of pressure applied to the plurality of granules (120) based on the change in the resistivity thereof.