APPARATUS FOR SECURING A LAND SURVEYOR'S MARK BASED ON THE USE OF A RADIO FREQUENCY IDENTIFIER TAG

摘要

The present invention discloses a land surveyor's mark comprising two parts, a first part intended to be planted in the ground and a second part assembled on the top of said first part. The mark is characterized in that : a tag, preferably a RFID (Radio Frequency Identifier) tag, which code value can be read by an appropriate wireless device, is imbedded and sealed in the second part of the mark; a tinny wire sealed in the first part of the mark and making an electrical conducting loop is connected to the RFID tag, said RFID tag having a first code value when said loop is closed and having a second code value when the loop is open; wherein, when the first part is firmly planted in the ground, pulling the head in order to pull up the mark will result in disassembling the two parts of the mark; breaking the tinny wire and opening of the loop; and thus changing the code value of the RFID tag.