| 摘要 |
An underground-construction indication nail having an RFID and a system for searching underground-construction information are provided to simply and exactly search information about the underground-construction. An underground-construction indication nail(10) having an RFID includes a pin(11), an electronic tag(20), a head(16), and a head cover(15). A bottom of the pin is a taper and a top of the pin is a placing unit(12) having a groove for underground. The electronic tag is placed on the placing unit. The head is inserted around the placing unit to be fixed by the pin to ground. The head cover covers an opened portion corresponding to the placing unit so as to close a space where the electronic tag is placed. Information indicating a sort of the underground-construction and a direction displays to individually distinguish on a surface of the head cover. The electronic tag includes a unique identification code capable of tagging via wireless network.
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