发明名称 POSITION MEASUREMENT SYSTEM AND POSITION MEASUREMENT METHOD
摘要 PROBLEM TO BE SOLVED: To provide a position measurement system and a position measurement method for precisely measuring the position of a human, or the like regardless of position measurement using radio wave strength that has been considered to be unsuitable for indoor position measurement conventionally. SOLUTION: The position measurement system comprises a radio tag 14 that is a object to be measured for position, a plurality of access points AP1-AP9 for measuring the position of the radio tag 14, and a server 16 connected directly or indirectly to the access points AP1-AP9. The access points AP1-AP9 acquire information related to the strength of radio waves from radio waves received from the radio tag 14 and other access points AP1-AP9, and send the acquired information to the server 16. The server 16 measures the position of the radio tag 14 by a triangulation method and upon whether the radio tag 14 is located inside a triangle. COPYRIGHT: (C)2007,JPO&INPIT
申请公布号 JP2006266859(A) 申请公布日期 2006.10.05
申请号 JP20050085147 申请日期 2005.03.24
申请人 OKI ELECTRIC IND CO LTD 发明人 ONO MASAYUKI
分类号 G01S5/02;H04B5/02;H04W84/10 主分类号 G01S5/02
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