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:
Jan. 24, 2017
Filed:
Aug. 30, 2013
National Taiwan University, Taipei, TW;
Shih-Chung Kang, Taipei, TW;
Pei-Chun Lin, Taipei, TW;
Yung-Shun Su, Miaoli, TW;
Ci-Jyun Liang, Taipei, TW;
Pei-Yi Lee, Taipei, TW;
Yao-Yu Yang, Taipei, TW;
Kevin Lin, Taipei, TW;
Chuan-En Lee, Taipei, TW;
NATIONAL TAIWAN UNIVERSITY, Taipei, TW;
Abstract
An early warning method and a device for preventing a wheelchair from tipping over are described. The early warning method includes projecting a laser light pattern, scanning the laser light pattern, making a comparison to determine whether the ground is a barrier terrain, and issuing an early warning to the user in situations of risk. The laser light pattern is projected onto the ground and compared with a standard pattern. The early warning is generated and is one selected from a group consisting of a beep, a warning message and a vibration to alert the wheelchair user to the danger of the barrier terrain.