| 摘要 |
PROBLEM TO BE SOLVED: To safely and precisely detect the position of a mobile by clearly distinguishing a region of which the mobile has already completed inspection from a non-inspected region. SOLUTION: A position detection device includes: a transmission coil 5 for transmitting magnetism provided at the mobile A; the reference tool 6, where a plurality of reception coils 61, 62 for receiving magnetism transmitted from the transmission coil 5 are arranged discretely in the same plane shape; and a computing means for computing the distance from respective reception coils 61, 62 to the transmission coil 5 based on magnetic information received by the reception coils 61, 62, and determining and outputting the coordinates position of the transmission coil 5 based on each obtained distance information. COPYRIGHT: (C)2008,JPO&INPIT
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