发明名称 |
ESTIMATION METHOD, ESTIMATION DEVICE, AND ESTIMATION PROGRAM FOR SENSOR TERMINAL POSITION |
摘要 |
PROBLEM TO BE SOLVED: To estimate the position of a sensor terminal configuring a wireless sensor network with high accuracy by using a simple device configuration.SOLUTION: A method for estimating a sensor terminal position includes the steps in which: counter values of a known terminal 2 and an unknown terminal 3 are reset (S1); a sound wave is emitted at the position of the unknown terminal 3 (S5); counter values at sound wave input time are transmitted from the terminals 2 and 3 (S6); a plurality of counter values are transmitted from the terminals 2 and 3 at prescribed time intervals t (S7-S10); a counter error is calculated for each of the terminals 2 and 3 (S11); each of the counter values of the terminals 2 and 3 at the sound wave input time is corrected by the counter error (S12); distance L between the known terminal 2 and the unknown terminal 3 is calculated (S13); and the position of the unknown terminal 3 is estimated using the distance L between a plurality of known terminals 2 and unknown terminals 3 (S14). |
申请公布号 |
JP2015055604(A) |
申请公布日期 |
2015.03.23 |
申请号 |
JP20130190698 |
申请日期 |
2013.09.13 |
申请人 |
CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY |
发明人 |
MIYASHITA MITSUFUMI;KURONO MASAHIRO |
分类号 |
G01S5/30;H04W64/00 |
主分类号 |
G01S5/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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