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:
Apr. 24, 2012
Filed:
Mar. 10, 2010
Joe-air Jiang, Taipei, TW;
Ta-te Lin, Taipei, TW;
En-cheng Yang, Taipei, TW;
Chwan-lu Tseng, Taipei, TW;
Fu-ming LU, Taipei, TW;
Kuo-chi Liao, Taipei, TW;
Jyh-cherng Shieh, Taipei, TW;
Ying-tung Hsiao, Taipei, TW;
Ping-lin Fan, Taipei, TW;
Cheng-long Chuang, Taipei County, TW;
Tzu-shiang Lin, Taichung, TW;
Chia-pang Chen, Changhua County, TW;
Joe-Air Jiang, Taipei, TW;
Ta-Te Lin, Taipei, TW;
En-Cheng Yang, Taipei, TW;
Chwan-Lu Tseng, Taipei, TW;
Fu-Ming Lu, Taipei, TW;
Kuo-Chi Liao, Taipei, TW;
Jyh-Cherng Shieh, Taipei, TW;
Ying-Tung Hsiao, Taipei, TW;
Ping-Lin Fan, Taipei, TW;
Cheng-Long Chuang, Taipei County, TW;
Tzu-Shiang Lin, Taichung, TW;
Chia-Pang Chen, Changhua County, TW;
National Taiwan University, Taipei, TW;
Abstract
A positioning method for a sensor node is provided, and the method includes steps of: providing a first antenna having a first omnidirectional radiation pattern on a first plane; rotating the first antenna about an axis substantially parallel to the first plane; transmitting a wireless signal while the first antenna rotates about the axis for every a predetermined central angle; receiving the wireless signal at the sensor node; obtaining Received Signal Strength Indications (RSSIs) of the respective wireless signals; and determining a location of the sensor node according to the RSSIs.