12 results about "Chipless RFID" patented technology

A chipless RFID-enabled liner free label includes a substrate with an RFID antenna on the substrate and adhesive applied to the same side. The RFID antenna may be purchased from a third party, printed with conductive ink, formed from transferred conductive foil, or created as a combination of printed ink and foil. The adhesive may be flood coated or applied in discontinuous and / or continuous patches or patterns. The labels may include printed sense marks, or the antenna itself may function as a sense mark. A roll of such labels provides waste reduction benefits through elimination of the liner while maintaining RFID functionality without requiring chips. This technology in a roll format offers a cost-effective alternative to traditional chip-based RFID labels while preserving tracking capabilities.

The application discloses a chipless RFID gesture recognition sensor resonant structure model, which comprises a dielectric plate, a rectangular feed microstrip line is arranged on the top surface of the dielectric plate along the transverse direction and close to the upper edge, a first resonant unit, a second resonant unit, a third resonant unit and a fourth resonant unit are arranged on the top surface of the dielectric plate from left to right along the transverse direction, and the first resonant unit, the second resonant unit, the third resonant unit and the fourth resonant unit are located below the rectangular feed microstrip line; and a rectangular ground is arranged on the bottom surface of the dielectric plate. Different lengths of the resonant units are arranged, different intervals between the resonant units for recognizing different joints of the same finger and the feed microstrip line are arranged, and intervals between adjacent resonant units for recognizing the same finger and intervals between adjacent resonant units for recognizing different fingers are set as different values, so that independent recognition of different finger joint postures is realized. The resonant structure model is small in size, convenient to process and integrated with wireless equipment.

The invention belongs to the technical field of structural health monitoring, and particularly relates to a chipless RFID sensor for metal crack multi-parameter detection. In order to solve the problems of parameter coupling effect, insufficient crack multi-parameter detection sensitivity, clutter interference and the like in the prior art, the device comprises a dielectric substrate, a detection patch is arranged on the upper surface of the dielectric substrate, and the detection patch is composed of a rounded rectangular patch and an arc-shaped opening structure. And the arc-shaped opening structures are positioned on the left and right symmetrical sides of the rounded rectangular patch in the horizontal direction. The detection patch generates two resonant frequencies corresponding to the shape of the crack to be detected by utilizing circular polarized wave excitation; the two resonant frequencies of the to-be-measured crack form are compared with the deviation value of the two initial resonant frequencies when no crack exists to determine the to-be-measured crack form, the two resonant frequencies of the to-be-measured crack form are subjected to decoupling analysis through a GA-BP neural network, and multi-parameter changes of the angle, width, depth and length of the crack are accurately reflected.

The application discloses a kind of passive chipless RFID multidimensional sensors and preparation method and application thereof, the preparation method of passive chipless RFID multidimensional sensor, comprising the following steps, S1: preparation passive chipless RFID antenna;S2: preparation humidity-sensitive material, photosensitive material and gas-sensitive material;S3: the humidity-sensitive material, photosensitive material and gas-sensitive material prepared in step S2 are respectively attached to the corresponding area of RFID antenna prepared in step S1, to obtain passive chipless RFID multidimensional sensor;S4: corresponding parameter of passive chipless RFID multidimensional sensor is measured and optimized.The application utilizes inkjet printing technology to obtain passive chipless RFID multidimensional sensor with ZnO / RGO humidity-sensitive layer, TiO2 / RGO light-sensitive layer and MoS2 / RGO gas-sensitive layer on the surface, which is implanted on food packaging, and data statistics can be realized through information sensing, without the need for manual scanning one by one, greatly saving manpower and resources.

The invention discloses a chipless RFID (Radio Frequency Identification) humidity sensor based on a transparent metal net film, which belongs to the technical field of wireless sensing and comprises a transparent top-layer radiation unit, a transparent middle dielectric substrate and a transparent bottom-layer metal surface, the top-layer radiation unit and the bottom-layer metal film adopt transparent metal net films and are covered with polydimethylsiloxane films; the intermediate dielectric substrate adopts a cycloolefin copolymer as a dielectric layer; the top radiation unit is provided with a microstrip transmission line, a data coding unit and a humidity sensing unit. And a Nafion 212 thin film is covered on the humidity sensing unit. The humidity sensor solves the problems that an existing humidity sensor is complex in structure and insufficient in sensing precision and stability.

This invention provides a method for manufacturing electronic components that can form a low-resistance conductive film on a penetrating substrate using ink that can be ejected by an inkjet head. [Solution] A method for manufacturing an electronic component comprises a printing pattern forming step of ejecting ink containing copper and a dispersion medium onto a substrate using an inkjet head to form a printed pattern, a drying film forming step of drying the printed pattern to form a dried film, and a sintering step of sintering the dried film, wherein the substrate is a permeable substrate into which the dispersion medium permeates, the substrate has heat resistance to the sintering step, the content of the dispersion medium is 40% by mass or more of the total amount of ink, Sw is the mass ratio of the dispersion medium to the total amount of ink, T is the permeation drying time of the dispersion medium onto the substrate (seconds), and θ is the contact angle of the dispersion medium onto the substrate (°), and the following formula I is satisfied. TIFF2026137097000021.tif25169

The application discloses a kind of multi-patch coreless RFID metal crack antenna sensor, it is related to metal crack detection technical field.The present application includes dielectric substrate and the multi-patch resonator arranged thereon, the multi-patch resonator includes center patch resonator, horizontally arranged one group of horizontal group circular patch resonator and vertically arranged one group of vertical group circular patch resonator, the horizontal group circular patch resonator and vertical group circular patch resonator are different in size, for generating independent resonant frequency, realize the multi-parameter detection to metal crack direction and width.The sensor of the present application is combined by cutting angle rectangular center patch and two groups of different size circular patches, effectively suppresses electromagnetic coupling between resonant units, ensures that each resonant point works independently, improves detection reliability.

Provided is a frequency domain-based printable chipless radio frequency identification (RFID) tag of a quadrilateral open resonator, and belongs to the field of radio frequency identification. The frequency domain-based printable chipless RFID tag of a quadrilateral open resonator includes a rectangular dielectric substrate having a metal grounding layer disposed at a bottom thereof. Four groups of quadrilateral open resonance units and two parallel symmetrical antennae are disposed above the rectangular dielectric substrate, and each group of quadrilateral open resonance units are symmetrically disposed on two sides of the two parallel symmetrical antennae. The present disclosure utilizes the quadrilateral open resonator to encode data, and capacitance and inductance of the resonance unit can be adjusted, so that the tag has the advantages of convenient encoding, high encoding density, and miniaturization.

A plurality of IDs are presented by chipless RFID using an object shape as an ID. Provided is an ID tag for arranging in a row a plurality of elements selected from: a first element having a peak of a reflection intensity in a first direction and a second direction; a second element having the peak of the reflection intensity in the first direction and having no peak of the reflection intensity in the second direction; a third element having the peak of the reflection intensity in the second direction and having no peak of the reflection intensity in the first direction; and a fourth element having no peak of the reflection intensity in the first direction and the second direction.

The invention discloses a medium interference suppression method and system based on chipless RFID, particularly relates to the technical field of chipless RFID, and is used for solving the problem of contradiction between dynamic change of chipless RFID node data generation rate and an LEACH protocol static clustering mechanism caused by medium interference. The method comprises the following steps: monitoring and acquiring a reading success rate of a corresponding chipless RFID tag through each chipless RFID reader-writer node as a data generation rate, constructing a dynamic attenuation matrix according to the data generation rate, and performing matrix decomposition to extract a signal attenuation dominant mode caused by medium interference; analyzing spatial features in the dominant mode to determine an influence domain range of medium interference, calculating a cluster head election weight by integrating node residual energy and the influence domain range when cluster head election is performed based on an LEACH protocol, and optimizing election cluster head nodes according to the weight to form a new network clustering structure. And the cluster head node aggregates the member node data in the cluster and forwards the data to the base station.

This invention discloses a chipless RFID metal crack sensing tag with integrated frequency band coding and its identification method. The tag patch unit is disposed on the upper surface of a dielectric substrate, and a metal base plate is disposed on the lower surface of the dielectric substrate. The tag patch unit includes a disc-shaped antenna and six arc-shaped patches. The disc-shaped antenna is located at the center of the dielectric substrate. The six arc-shaped patches are concentrically distributed in an arc shape with the center of the disc-shaped antenna as the common center, and are divided into two groups: the first group consists of four arc-shaped patches, evenly distributed circumferentially at the top, bottom, left, and right positions of the common center, equidistant from the center; the second group consists of two arc-shaped patches, distributed circumferentially at the top and bottom positions of the common center, equidistant from the center, and closer to the center than the arc-shaped patches in the first group, and do not contact the arc-shaped patches in the first group. This invention is low-cost, allows for wireless measurement, and can be deployed on a large scale.

A chipless RFID-enabled liner free label includes a substrate with an RFID antenna on the substrate and adhesive applied to the same side. The RFID antenna may be purchased from a third party, printed with conductive ink, formed from transferred conductive foil, or created as a combination of printed ink and foil. The adhesive may be flood coated or applied in discontinuous and / or continuous patches or patterns. The labels may include printed sense marks, or the antenna itself may function as a sense mark. A roll of such labels provides waste reduction benefits through elimination of the liner while maintaining RFID functionality without requiring chips. This technology in a roll format offers a cost-effective alternative to traditional chip-based RFID labels while preserving tracking capabilities.