| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an object orientation detection system easily, inexpensively and precisely detecting the posture of an object. <P>SOLUTION: Both surfaces of the measurement object 30 are installed with RF tag units 20a, 20b. The RF tag units 20a, 20b each are stacked with RF tags 21a, 21b, high permeability sheets 22a, 22b, and electromagnetic wave insulation sheets 23a, 23b in sequence, respectively. Transmission signals generated in a transmission signal generation section 11 of an RF tag reader 10 are radiated from an antenna 13 as an electromagnetic wave. A reception signal determination section 12 determines which surface of the measurement object 30 is oriented to the antenna 13 side of the RF tag reader 10 based on the presence or absence of the response from the RF tags 21a, 21b, detecting the face-down state. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
