The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2020
Filed:
Nov. 12, 2018
National Central University, Taoyuan, TW;
Ju-Yi Lee, Taipei, TW;
Hong-Yih Yeh, New Taipei, TW;
Ying-Kai Hsu, Taichung, TW;
An-Chi Wei, Taoyuan, TW;
National Central University, Taoyuan, TW;
Abstract
The tactile sensor of the present disclosure is an indirect optical sensor, comprising a frame, a sensing plate, a single beam LED light source, a miniature camera, and a grating plate in the sensing plate and the single light source illuminates the grating plate. Geometric interference fringes caused by the shadows of gratings and gratings, images taken by a miniature camera, through an innovative instantaneous steps phase shifting technique, which eliminates the need for any mechanical phase shifting device to detect the pressure and space. The position is measured and has fast and accurate tactile sensing. The advantage of this method is that directly shooting the moiré image while calculating the spatial position, temperature, and pressure. Instantaneous steps phase shifting technique can solve the problems of traditional mechanical stepping, non-instant and complex operation problems.