▎ 摘　　要

NOVELTY - The preparation method involves preparing humidity sensitive material, photosensitive material, and gas sensitive material. A passive chip-free RFID multi-dimensional sensor is obtained. The parameters are measured corresponding to the passive chip less radio frequency identification (RFID) multilayer sensor. The simulation design is carried to an RFID antenna by HFSS software. A PET flexible plate is used as substrate. An ink jet printing technology is used to print an RFID antenna designed on the substrate. The constant temperature drying box is used to dry an RFID antenna printed on the substrate. The mixed solution of PVA, and graphene is obtained. USE - Preparation method for passive chip-free radio frequency identification (RFID) multi-dimensional sensor. ADVANTAGE - The method enables preparing an RGO humidity sensitive layer on the surface by using an ink-jet printing technology, and implanting the sensor into food package, and realizes data statistics by information sensing, and there is no need to manually scan by hand, and saves manpower, and material resources. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of a preparation method for passive chip-free radio frequency identification (RFID) multi-dimensional sensor. (Drawing includes non-English language text).