The invention provides a passive digital
tag system based on Beidou and
radio frequency identification technology, which comprises a
radio frequency electronic tag, an RFID reader-writer module, a GPRS communication module, an embedded processor and a background
server, node information is written in the
radio frequency electronic tag in advance, underground
pipe gallery information is stored in the radio frequency electronic tag through a built-in
chip of the radio frequency electronic tag, and the embedded processor is connected with the background
server. Forming an
information storage database; a GPS-RTK differential positioning
algorithm is operated in the Beidou positioning module, real-time
dynamic positioning of the radio frequency
electronic tags is realized, coordinate information of the radio frequency
electronic tags is stored in a
database, and an underground
pipe gallery trend
electronic map is established; a GIS map
system is installed in the background
server. The defects that a traditional
label can only be identified through visible information, manual reading is achieved, and the amount of information is small can be overcome; the problems of sparse distribution, easy loss and displacement in a traditional identification mode are solved; the problem that a traditional identification method is inaccurate in buried underground
pipe cable trend positioning and cannot synchronously
record underground pipe cable information updating is solved.