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Method for Precise In-House Positioning基於RFID技術的穩健的室內精確定位方法

總結

Positioning and location identification is useful in a number of industrial fields. In logistics and transportation domain, such information provides an in-depth understanding to the whole supply chain for example by knowing the position of each cargo, carrier, vehicles, and even human at real-time. At present, there are two systems available for detecting the positions: Global Positioning System (GPS) and Indoor Positioning System (IPS). The former one has great value in determining the position of a user around the globe but it requires a good view of the sky at all times. The latter one does not have a high precision for logistics applications and problem always aroused if any of the access points fails to work.

The invention is about a robust method for precise in-house positioning utilizing RFID (Radio Frequency Identification) technology. A set of RFID tags are labeled in the environment. Sample readings or RFID tags are first collected when RFID antenna and reader are placed at each location. The position can then be estimated based on the reading pattern. The precision can be within one meter. In addition, if the effective RFID field of the antenna is not concentric, for one location, reading samples when vehicle facing different direction is also recorded, so that later the direction could also be determined. The detection is of high precision for logistics applications and of low cost.

The invention can be used in different tag distribution, reader range, defective tags, and other alterable physical constrains.

技術優勢

1. More precise
2. Low cost solution
3. Robustness to environment noise and tag failure
4. Carrier orientation information is provided

技術應用

- Precise in-house positioning using RFID

附加資料

Patent Number: US7598865B2
Application Number: US2006459640A
Inventor: Zhang, Kaicheng | Lim, Andrew Leong Chye | Zhu, Wenbin | Deng, Jiuqing | Che, Chan Hou
Priority Date: 25 Jul 2005
Priority Number: US7598865B2
Application Date: 24 Jul 2006
Publication Date: 6 Oct 2009
IPC Current: G08B001314
US Class: 3405721 | 3400081 | 3400101 | 34001052 | 3405391 | 34053913 | 3405724 | 34082549 | 34082569
Title: Method for precise in-house positioning
Usefulness: Method for precise in-house positioning
Summary: Used for locating a moving object e.g. cargo, carrier, vehicle in an indoor environment (claimed) such as warehouse, cargo terminal, and truck depot, and in logistics and transportation domain.
Novelty: Moving object e.g. vehicle, locating method for e.g. warehouse, involves matching identification information in received signals with stored location map to select one location from several locations for moving object

主要類別

信息和通信技術/電信

細分類別

電信

申請日期

24 Jul 2006

申請號碼

US 11/459640

專利信息

US 7598865

ID號碼

TTC.PA.263S

國家/地區

香港