CN203224896U

CN203224896U - Screw-type RFID (Radio Frequency Identification) tag

Info

Publication number: CN203224896U
Application number: CN 201320228190
Authority: CN
Inventors: 张火荣; 孙伟; 陈强; 李琳; 冯子义
Original assignee: SENSESTONE TECHNOLOGIES Co Ltd
Current assignee: SENSESTONE TECHNOLOGIES Co Ltd
Priority date: 2013-04-28
Filing date: 2013-04-28
Publication date: 2013-10-02
Anticipated expiration: 2023-04-28

Abstract

The utility model discloses a screw-type RFID (Radio Frequency Identification) tag. The RFID tag comprises metal screw (1), a cuboid-shaped tag substrate (4) and a round-plate-shaped ceramic wafer (3) with a low dielectric constant. The upper surface of the tag substrate is an antenna radiation face (41), and the lower surface (42) is a grounding electrode. The ceramic wafer is centrally provided with a rectangular up-down through hole (31). A cylindrical groove (21) is arranged on the upper surface of a head (2) of the metal screw, and the ceramic wafer is embedded in the cylindrical groove and fixed. The tag substrate is embedded in a square hole at the center part of the ceramic wafer and fixed. The grounding electrode of the tag substrate is electrically contacted with a metal bottom of the cylindrical groove of the screw head. According to the utility model, the round-plate-shaped ceramic wafer with a low dielectric constant is arranged between the groove and the tag substrate, so that the side radiation space of the ceramic antenna is increased, and the overall performance of the tag is improved; besides, the RFID tag can be fixed on the surface of a metal or other objects by the threads of the screw, providing fastness and convenience.

Description

Screw-type RFID label

Technical field

The utility model relates to a kind of structure of RFID label, a kind of screw-type RFID label.

Background technology

RFID(Radio Frequency Identification) label technique, claim electronic label technology, radio RF recognition technology again, it is a kind of communication technology, can identify specific objective and read and write related data by radio signals, need not to set up machinery between recognition system and the specific objective or optics contacts, function quick, batch identification can be realized, the occasion in asset managements such as IT, medical treatment, instruments can be used.Rfid system generally comprises electronic tag, read write line two parts.Electronic tag is fixed on the identified object, is used for storing the identity information of identified object.Read write line and electronic tag carry out radio communication, and data message in the label is write and reads.

Sensing layers such as the development need RFID of technology of Internet of things and sensor realize that hyper band wherein is the emphasis of development.UHF RFID tag application is during to environment such as liquid, metal, and dipole antenna can't be competent at, and microstrip antenna or the PIFA antenna of pottery commonly used or plastic substrate are made label at present.

Summary of the invention

The utility model is intended to propose a kind of structure of screw-type RFID label, can directly be assembled on the metal object to be applied.

This screw-type RFID label comprises the electronic tag matrix of a metallic screw and a cuboid; The upper surface of electronic tag matrix is the aerial radiation face, and the lower surface of electronic tag matrix is earthing pole, and there is the feed electrode side of electronic tag matrix, is fixing the IC chip on the feed electrode.This screw-type RFID label also comprises the potsherd of the low-k of a circular plate type, and there is the rectangular opening of a up/down perforation at the middle part of potsherd.A columniform groove is arranged on the upper surface of the head of described metallic screw, and described potsherd embeds in the columniform groove of screw head, and the sidewall of potsherd and the sidewall of groove fit and fix.Described electronic tag matrix embeds in the rectangular opening at above-mentioned potsherd middle part and fixes with the hole wall in square hole, and the metal bottom surface of the earthing pole of electronic tag matrix and the columniform groove of screw head is electrically connected.

This screw-type RFID label is owing to there is the potsherd of low-k between the groove of metal and label substrate, increased the space of ceramic antenna side radiation, the overall performance of label is promoted, and the screw thread that can utilize its screw directly is fixed on metal object or other object surfaces, and is firm, convenient.

Description of drawings

Fig. 1 is the structural drawing of screw-type RFID label;

Fig. 2 is the structural drawing of label substrate;

Fig. 3 is the structural drawing of metallic screw;

Fig. 4 is the structural drawing of potsherd.

Embodiment

As shown in Figure 1, this screw-type RFID label comprises the potsherd 3 of the low-k of the electronic tag matrix 4 of a metallic screw 1, a cuboid and a circular plate type; As shown in Figure 2, the upper surface of electronic tag matrix is aerial radiation face 41, and the lower surface 42 of electronic tag matrix is earthing pole, and there is feed electrode 43 side of electronic tag matrix, is fixing the IC chip on the feed electrode.As shown in Figure 4, there is the rectangular opening 31 of a up/down perforation at the middle part of potsherd 3, and the material of potsherd 3 is the dielectric constant microwave pottery, as Al ₂O ₃Series microwave ceramics, MO-SiO ₂(M=Ca, Mg, Zn) serial microwave ceramics etc.As shown in Figure 3, a columniform groove 21 is arranged on the upper surface of the head 2 of described metallic screw 1.As shown in Figure 1, potsherd 3 embeds in the columniform groove 21 of screw head, and the sidewall of potsherd and the sidewall of groove fit and fix, can be at some epoxy glue of coating in the slit.Electronic tag matrix 4 lower surface 42(earthing poles) embed downwards in the rectangular opening 31 at above-mentioned potsherd middle part and fix with the hole wall in square hole, but also in the slit at some epoxy glue of coating.The earthing pole 42 of electronic tag matrix 4 is electrically connected with the metal bottom surface of the columniform groove 21 of screw head.The aerial radiation face 41 of label substrate 4 upwards keeps good radiance.

This screw-type RFID label can rely on its bolt portion to be fixed on easily on metal or the non-metallic objectsit is not a metal object, plays the effect of electronic tag, better effects if when being fixed on the metal object.

Claims

1. screw-type RFID label comprises the electronic tag matrix (4) of a metallic screw (1) and a cuboid; The upper surface of electronic tag matrix is aerial radiation face (41), the lower surface of electronic tag matrix is earthing pole (42), there is feed electrode (43) side of electronic tag matrix, fixing the IC chip on the feed electrode, it is characterized in that this screw-type RFID label also comprises the potsherd of the low-k of a circular plate type (3), there is the rectangular opening (31) of a up/down perforation at the middle part of potsherd, on the upper surface of the head (2) of described metallic screw (1) a columniform groove (21) is arranged, described potsherd (3) embeds in the columniform groove (21) of screw head, the sidewall of potsherd and the sidewall of groove fit and fix, described electronic tag matrix (4) embeds in the rectangular opening (31) at above-mentioned potsherd middle part and fixes with the hole wall of rectangular opening, and the earthing pole (42) of electronic tag matrix (4) is electrically connected with the metal bottom surface of the columniform groove (21) of screw head.