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:
Nov. 10, 2015
Filed:
Apr. 10, 2013
Tsinghua University, Beijing, CN;
Ming Zhang, Beijing, CN;
Yu Zhu, Beijing, CN;
Hao Liu, Beijing, CN;
Yi Jiang, Beijing, CN;
Zhao Liu, Beijing, CN;
Kaiming Yang, Beijing, CN;
Jinchun Hu, Beijing, CN;
Dengfeng Xu, Beijing, CN;
Haihua Mu, Beijing, CN;
Wensheng Yin, Beijing, CN;
TSINGHUA UNIVERSITY, Beijing, CN;
Abstract
A method for measuring displacement of a large-range moving platform, comprising: arranging multiple beams of first measuring light parallel to one another and generated by an optical path distribution device and a position sensitive detector array in a certain manner, to ensure that at least one beam of first measuring light is detected by the position sensitive detector array when a moving platform is at any position of a moving area; a detection head array capable of determining whether a light beam is shaded being used for auxiliary measurement of a position of the moving platform; and determining a position of the moving platform that corresponds to the first measuring light measured by the position sensitive detector array, to calculate displacement of the moving platform. The method effectively enlarges a measurement range of the position sensitive detector array, and implements measurement of long range displacement of the moving platform.