US 11,965,755 B2
Triboelectric sensor and control system
Chengkuo Lee, Singapore (SG); Qiongfeng Shi, Singapore (SG); and Tao Chen, Jiangsu (CN)
Assigned to NATIONAL UNIVERSITY OF SINGAPORE, Singapore (SG)
Appl. No. 17/297,318
Filed by NATIONAL UNIVERSITY OF SINGAPORE, Singapore (SG)
PCT Filed Oct. 14, 2019, PCT No. PCT/SG2019/050509
§ 371(c)(1), (2) Date May 26, 2021,
PCT Pub. No. WO2020/081007, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 10201809043X (SG), filed on Oct. 15, 2018; and application No. 10201810619W (SG), filed on Nov. 27, 2018.
Prior Publication US 2021/0404844 A1, Dec. 30, 2021
Int. Cl. H02N 1/04 (2006.01); G01D 5/14 (2006.01); G06F 3/0354 (2013.01)
CPC G01D 5/14 (2013.01) [H02N 1/04 (2013.01); G06F 3/0354 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A triboelectric sensor comprising:
a substrate;
at least one grid structure disposed in or on the substrate; and
at least one electrode for collecting triboelectric charges that are generated by sliding of an object over a surface of the substrate, the at least one electrode comprising at least one pair of electrodes, respective electrodes of the pair being located at opposite sides of the substrate; and wherein:
wherein the at least one grid structure is configured such that motion of the object is detectable from a signal generated by crossing of the object over at least part of the grid structure, the at least one grid structure comprising a spacing structure, said spacing structure comprising a plurality of raised portions, the raised portions having a constant height, such that transport of the object along the surface of the substrate generates a separation of charges between the surface and the object when the object encounters one of said raised portions, and such that motion parameters of the object are derivable from a ratio of electric potentials of said pair of electrodes.