公开(公告)号：US12236035B2

公开(公告)日：2025-02-25

申请号：US18108047

申请日：2023-02-10

Applicant: Peratech IP Ltd.

Inventor： Sarah Jessica Dempsey ,  Matthew Gospel

IPC: G06F3/041 ,  G01L1/20 ,  G01L1/22 ,  G01L1/18 ,  G01L5/1623

Abstract: A force sensing device comprises a sensing array comprising a first conductive layer having a plurality of conductive rows and a second conductive layer having a plurality of conductive columns. The plurality of conductive rows and plurality of conductive columns are arranged to define a plurality of intersections. The force sensing device also comprises an electro-active layer overlaying the first conductive layer and comprising a pressure sensitive element at each intersection. A force concentrating structure is positioned at each intersection on the second conductive layer.

公开(公告)号：US20250013334A1

公开(公告)日：2025-01-09

申请号：US18888389

申请日：2024-09-18

Applicant: Peratech IP Ltd.

Inventor： Sarah Jessica Dempsey

IPC: G06F3/044 ,  G06F3/02 ,  G06F3/041

Abstract: A force sensing device, comprises a first electrode layer comprising a material having a first resistivity and a second electrode layer comprising a pressure sensitive material having a second resistivity. The second resistivity is relatively high compared to the first resistivity. The first and second electrode layers are configured to be brought together under an applied force. A first conductive material is applied to the first electrode layer and a second conductive material is applied to the second electrode layer to produce first and second moderator layers, respectively. The first and second conductive materials each comprise a material having a resistivity lower than the first and second resistivities, such that, when the first and second conductive materials are brought into contact under the applied force, the current flow between the first and second conductive materials is dependent on the contact area between the first and second moderator layers.

公开(公告)号：US12158386B2

公开(公告)日：2024-12-03

申请号：US17553905

申请日：2021-12-17

Applicant: PERATECH IP LTD

Inventor： Timothy Peter Wiles

IPC: G01L5/00 ,  G01L1/22

Abstract: A method of calibrating a force sensing device comprises establishing an optimized force-resistance curve by obtaining a mean resistance of a plurality of force-resistance curves for a set of substantially similar force sensing devices and measuring calibration data of the force sensing device. The method applies a plurality of calibration points defined from the measuring step to the optimized force-resistance curve and adapts the optimized force-resistance curve to form an adapted force-resistance curve by interpolating the plurality of calibration points and determining a multiplier value for each calibration point.