US 11,809,670 B2
Flexible touch sensing system and method with deformable material
Sang Ho Yoon, West Lafayette, IN (US); and Karthik Ramani, West Lafayette, IN (US)
Assigned to Purdue Research Foundation, West Lafayette, IN (US)
Filed by Purdue Research Foundation, West Lafayette, IN (US)
Filed on Jan. 9, 2023, as Appl. No. 18/152,021.
Application 18/152,021 is a continuation of application No. 17/549,860, filed on Dec. 13, 2021, granted, now 11,550,440.
Application 17/549,860 is a continuation of application No. 16/544,891, filed on Aug. 19, 2019, granted, now 11,199,936, issued on Dec. 14, 2021.
Claims priority of provisional application 62/719,540, filed on Aug. 17, 2018.
Prior Publication US 2023/0161447 A1, May 25, 2023
Int. Cl. G06F 3/044 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/0447 (2019.05) [G06F 3/0416 (2013.01); G06F 3/0443 (2019.05)] 19 Claims
OG exemplary drawing
 
16. A sensing system, comprising:
a base material having a resistance distribution that changes in response to being mechanically deformed as a result of a human body contact, the base material being deformable;
a plurality of electrodes attached to a perimeter of the base material;
a capacitive sensing channel attached to the base material; and
a controller operatively connected to the plurality of electrodes and the capacitive sensing channel, the controller configured to,
measure instantaneous voltage measurements from the plurality of electrodes;
identify a contact coordinate location of the human body contact on the sensor;
maintain and restore a contact localization of the human body contact during and after a deformation event in which the sensor is deformed.