TWI497421B - Embedded ring radio frequency identification tag - Google Patents

Description

Embedded circular RFID tag

The present invention relates to a radio frequency identification tag, and more particularly to an embedded circular radio frequency identification tag.

In the steel production line, the rolls are essential and consumable equipment. Each roll has a special roll number for easy identification, and the roll number of the roll is mostly engraved on the end face of the roll before leaving the factory to facilitate the user. It can be effectively identified when used. However, after the above-mentioned rolls are used on the upper thread, the end faces engraved with the roller numbers are often covered by oil stains, water stains or paint for identification, making the roller numbers difficult to recognize.

The RFID system has been widely used in various industries in recent years due to its fast reading speed and easy automation. The RFID tag in the RFID system is ideal for mounting on the end face of the roll for roll identification. However, how to fix the RFID tag quickly and firmly to the end face of the roll is a very important issue at present. Especially when the end face diameter of the roll is less than 20 mm, the RFID tag should be fast and firmly fixed on the end face of the roll. It will become more difficult.

Therefore, it is necessary to provide an innovative and progressive embedded circular RFID tag to solve the above problems.

The invention provides an embedded circular radio frequency identification tag comprising: a ring tag antenna and a radio frequency identification chip. The ring tag antenna includes: an annular substrate having an elastic section and a line arrangement section, the line arrangement section having an upper surface and a lower table a top conductive portion disposed on an upper surface of the line arrangement section; an impedance adjustment portion disposed on the upper surface of the line arrangement section and spaced apart from the upper conductive portion; and a lower conductive portion disposed The lower surface of the line arrangement section is electrically connected to the upper conductive portion and the impedance adjusting portion. The two ends of the RFID chip are electrically connected to the upper conductive portion and the impedance adjusting portion.

According to the invention, the deformation of the elastic section of the annular substrate can be controlled, so that the label can be quickly and stably clamped in the micro mounting hole of the metal object. That is, applying pressure to the elastic section can reduce the outer diameter of the annular substrate, so that the embedded circular RFID tag can be embedded in the micro mounting hole of the metal object, and the elastic section will rebound after the pressure is released. The expansion force causes the embedded circular RFID tag to be quickly and securely clamped in the mounting hole. When the embedded circular RFID tag is to be removed from the mounting hole, the embedded circular RFID tag can be easily taken out by applying pressure to the elastic section.

The embodiments of the present invention can be more clearly understood, and the objects, features, and advantages of the present invention will become more apparent. The details are as follows.

1‧‧‧Embedded circular RFID tags

10‧‧‧Ring tag antenna

11‧‧‧ring substrate

111‧‧‧Flexible section

1110‧‧‧S-shaped curved structure

1111‧‧‧Convex structure

1112‧‧‧Connecting arm

1113‧‧‧ hook arm

112‧‧‧Line Configuration Section

112a‧‧‧Upper surface

112b‧‧‧ lower surface

112c‧‧‧ inner edge

112d‧‧‧ outer edge

113‧‧‧First via

114‧‧‧Second via

12‧‧‧Upper Conductive Department

12a‧‧‧ first end

12b‧‧‧second end

13‧‧‧Impedance Adjustment Department

14‧‧‧Extension impedance adjustment unit

15‧‧‧lower conductive part

20‧‧‧RF chip

30‧‧‧Metal objects

30a‧‧‧ end face

31‧‧‧Installation holes

C1‧‧‧ cut point

C2‧‧‧corresponding cut-off point

D1‧‧‧ outer diameter of the annular substrate

D2‧‧‧ diameter of mounting hole

G‧‧‧ gap

G1‧‧‧ separation gap

G2‧‧‧ adjustment gap

1 is a top view showing the structure of an embedded ring-shaped radio frequency identification tag according to a first embodiment of the present invention; FIG. 2 is a bottom view showing the structure of the embedded ring radio frequency identification tag according to the first embodiment of the present invention; and FIG. 3 is a view showing the embedded ring radio frequency identification of the present invention. FIG. 4 is a schematic view showing the combination of the embedded ring-shaped RFID tag of the present invention and the metal object having the mounting hole; FIG. 5 is a view showing different cutting points of the impedance adjusting portion of the present invention and a relationship diagram of different corresponding cut-off points and operating frequencies of the extended impedance adjusting portion; 6 is a schematic structural view of a built-in ring radio frequency identification tag according to a second embodiment of the present invention; FIG. 7 is a schematic structural view showing a built-in ring radio frequency identification tag according to a third embodiment of the present invention; and FIG. 8 is a view showing a fourth embodiment of the present invention. A schematic structural diagram of a radio frequency identification tag; and FIG. 9 is a schematic structural view of an embedded ring radio frequency identification tag according to a fifth embodiment of the present invention.

1 is a top plan view showing the structure of an embedded ring-shaped radio frequency identification tag according to a first embodiment of the present invention. 2 is a bottom plan view showing the structure of the embedded ring-shaped radio frequency identification tag of the first embodiment of the present invention. 1 and 2, the embedded ring-shaped RFID tag 1 of the present invention includes a ring tag antenna 10 and a radio frequency identification chip 20.

The ring tag antenna 10 includes an annular substrate 11 , an upper conductive portion 12 , an impedance adjusting portion 13 , an extended impedance adjusting portion 14 , and a lower conductive portion 15 .

The annular substrate 11 has an elastic section 111 and a line arrangement section 112. In the present embodiment, the elastic section 111 is formed by connecting a plurality of S-shaped curved structures 1110 in series. The length of the line configuration section 112 is greater than the length of the elastic section 111, and the line arrangement section 112 has an upper surface 112a, a lower surface 112b, an inner edge 112c, an outer edge 112d, and a first via hole. 113 and a second via hole 114.

The upper conductive portion 12 is disposed on the upper surface 112a of the line arrangement section 112, and the upper conductive portion 12 is disposed along the inner edge 112c of the line arrangement section 112. In this embodiment, the upper conductive portion 12 has a first end 12a and a second end 12b, and the second end 12b is opposite to the first end 12a. Preferably, the first via hole 113 of the line arrangement section 112 is formed on the first end 12a of the upper conductive portion 12.

The impedance adjusting portion 13 is disposed on the upper surface 112a of the line arrangement section 112, and the The impedance adjusting portion 13 is provided along the inner edge 112c of the line arrangement section 112. In the present embodiment, the impedance adjusting portion 13 is spaced apart from the upper conductive portion 12, and the impedance adjusting portion 13 and the upper conductive portion 12 have a gap G1 therebetween. Preferably, the length of the impedance adjusting portion 13 is smaller than the length of the upper conductive portion 12, and the area of the impedance adjusting portion 13 is also smaller than the area of the upper conductive portion 12.

Further, the impedance adjusting unit 13 has at least one cutting point C1 corresponding to a specific operating frequency band. In this embodiment, the impedance adjusting unit 13 has a plurality of cutting points C1, and each of the cutting points C1 corresponds to different operating frequency bands, such as 865~868MHz (for Europe) and 902~968MHz (for the United States). ), 922~928MHz (for Taiwan) and 950~956MHz (for Japan). Preferably, the cutting points C1 are notched to facilitate cutting.

The extended impedance adjusting portion 14 is mainly used to assist the impedance adjusting portion 13 to perform accurate impedance adjustment so that the ring tag antenna 10 can be applied to various operating frequency bands. In the present embodiment, the extension impedance adjustment unit 14 corresponds to the impedance adjustment unit 13 and is spaced apart from the impedance adjustment unit 13. Preferably, the extension impedance adjustment unit 14 is parallel to the impedance adjustment unit 13. The length of the extension impedance adjustment unit 14 is greater than the length of the impedance adjustment unit 13. Further, the extension impedance adjustment unit 14 and the impedance adjustment unit 13 have an adjustment gap G2. Preferably, the adjustment gap G2 communicates with the separation gap G1.

In addition, in the present embodiment, the extended impedance adjusting portion 14 is disposed along the outer edge 112d of the line arrangement portion 112, and one end of the extended impedance adjusting portion 14 is connected to the upper conductive portion 12. Preferably, the one end of the extended impedance adjusting portion 14 is connected to the second end 12b of the upper conductive portion 12.

In addition, in order to accurately control the operating frequency band of the ring tag antenna 10, the extended impedance adjusting portion 14 may have at least one corresponding cutting point C2, which corresponds to at least one of the impedance adjusting portions 13. Breakpoint C1. In this embodiment, the extended impedance adjusting unit 14 has a plurality of corresponding cutting points C2, and each of the corresponding cutting points C2 is divided into points. The respective cut-off points C1 of the impedance adjusting unit 13 are not matched. Preferably, the corresponding cutting points C2 are also notched to facilitate cutting together with the corresponding cutting point C1.

The lower conductive portion 15 is disposed on the lower surface 112b of the line arrangement portion 112, and is electrically connected to the upper conductive portion 12 and the impedance adjusting portion 13. In the present embodiment, the lower conductive portion 15 is electrically connected to the upper conductive portion 12 and the impedance adjusting portion 13 through the first via hole 113 and the second via hole 114 of the line arrangement portion 112, that is, The upper conductive portion 12 and the lower conductive portion 15 are connected by the first via hole 113, and the impedance adjusting portion 13 and the lower conductive portion 15 are connected by the second via hole 114. Moreover, preferably, the area of the lower conductive portion 15 is larger than the area of the upper conductive portion 12.

The two ends of the RFID chip 20 are electrically connected to the upper conductive portion 12 and the impedance adjusting portion 13, respectively, and the RFID chip 20 corresponds to the gap G1.

Referring to Figure 3, there is shown a schematic view of the embedded annular RFID tag of the present invention in combination with a metal object having a mounting hole. The embedded circular RFID tag 1 of the present invention is suitable for use in a metal object 30. Preferably, the metal object 30 is a roll. In addition, the metal object 30 has an end surface 30a and a mounting hole 31 formed in the end surface 30a. In this embodiment, the outer diameter D1 of the annular substrate 11 is larger than the diameter D2 of the mounting hole 31, so that the embedded circular RFID tag 1 can be quickly and stably locked in the mounting hole 31 of the metal object 30. . Preferably, the outer diameter D1 of the annular substrate 11 is approximately larger than the diameter D2 of the mounting hole 31.

4 is a schematic view showing the combination of the embedded circular RFID tag of the present invention and a metal object having a mounting hole. Referring to FIG. 3 and FIG. 4, by applying pressure to the elastic section 111, the S-shaped curved structures 1110 can be deformed to reduce the outer diameter D1 of the annular substrate 11. At this time, the embedded circular radio frequency identification The label 1 can be embedded in the mounting hole 31 of the metal object 30, and after the pressure is released, the S-shaped curved structures 1110 of the elastic section 111 generate a rebound expansion force, and the embedded circular RFID tag 1 is fast and securely stuck in the mounting hole 31. When the embedded circular radio frequency identification is to be taken out from the mounting hole 31 When the label 1 is used, the embedded circular radio frequency identification tag 1 can be easily taken out by applying pressure to the elastic section 111.

The invention can control the deformation of the elastic section 111 of the annular substrate 11 so that the embedded circular RFID tag 1 can be quickly and stably locked in the mounting hole 31 of the metal object 30.

Fig. 5 is a view showing the relationship between different cut-off points and operating frequencies of different cut-off points and extension resistance adjusting portions of the impedance adjusting portion of the present invention. Referring to FIG. 1 and FIG. 5, the present invention can ensure that the ring tag antenna 10 can be distinguished from the radio frequency identification by selecting the cut point C1 of the impedance adjusting portion 13 and the corresponding cut point C2 of the extended impedance adjusting portion 14. Wafer 20 achieves impedance matching and can be adapted to the selected operating frequency band.

Referring to FIG. 6, which is a schematic structural diagram of an embedded ring-shaped radio frequency identification tag according to a second embodiment of the present invention. The structural feature of the second embodiment of the present invention is basically the same as that of the first embodiment, except that the elastic section 111 is composed of a circular convex structure 1111 and two connecting arms 1112, and the circular convex structure 1111 is two. The ends are respectively connected to one end of each of the connecting arms 1112, and the other end of each of the connecting arms 1112 is connected to the line configuring section 112. In the present embodiment, by controlling the deformation of the circular convex structure 1111 of the elastic section 111, the embedded circular RFID tag 1 can also be quickly installed.

Referring to FIG. 7, which is a schematic structural view of an embedded ring-shaped radio frequency identification tag according to a third embodiment of the present invention. The structural features of the third embodiment of the present invention are basically the same as those of the second embodiment, except that the circular convex structures 1111 are different in size.

Referring to FIG. 8, which is a structural diagram of an embedded ring-shaped radio frequency identification tag according to a fourth embodiment of the present invention. The structural features of the fourth embodiment of the present invention are basically the same as those of the second embodiment, except that the shape of the circular convex structure 1111 is different and the connecting arms 1112 are curved.

Referring to FIG. 9, which is a schematic structural diagram of an embedded ring-shaped radio frequency identification tag according to a fifth embodiment of the present invention. The structural features of the fifth embodiment of the present invention are basically the same as those of the first embodiment. The difference is that the elastic section 111 is formed by two hook arms 1113. One end of the two hook arms 1113 is connected to the line arrangement section 112, and the gap between the two hook arms 1113 is G. . In this embodiment, the elastic section 111 can also be deformed by adjusting the gap G, and the embedded circular RFID tag 1 can be quickly installed.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the scope of the present invention. The scope of the invention should be as set forth in the appended claims.

1‧‧‧Embedded circular RFID tags

10‧‧‧Ring tag antenna

11‧‧‧ring substrate

111‧‧‧Flexible section

1110‧‧‧S-shaped curved structure

112‧‧‧Line Configuration Section

112a‧‧‧Upper surface

112c‧‧‧ inner edge

112d‧‧‧ outer edge

113‧‧‧First via

114‧‧‧Second via

12‧‧‧Upper Conductive Department

12a‧‧‧ first end

12b‧‧‧second end

13‧‧‧Impedance Adjustment Department

14‧‧‧Extension impedance adjustment unit

20‧‧‧RF chip

C1‧‧‧ cut point

C2‧‧‧corresponding cut-off point

G1‧‧‧ separation gap

G2‧‧‧ adjustment gap

Claims (20)

An embedded circular RFID tag includes: a ring tag antenna comprising: an annular substrate having an elastic section and a line arrangement section, the line arrangement section having an upper surface and a lower surface; and an upper conductive portion And disposed on the upper surface of the line configuration section; an impedance adjustment portion disposed on the upper surface of the line arrangement section and spaced apart from the upper conductive portion; and a lower conductive portion disposed in the line configuration section The lower surface is electrically connected to the upper conductive portion and the impedance adjusting portion; and a radio frequency identification chip is electrically connected to the upper conductive portion and the impedance adjusting portion respectively. The embedded circular radio frequency identification tag of claim 1, wherein the elastic section is formed by connecting a plurality of S-shaped curved structures in series. The embedded circular RFID tag of claim 1, wherein the elastic section is formed by a circular convex structure and two connecting arms, and the two ends of the circular convex structure are respectively connected to one end of each connecting arm, and each of the connecting ends The other end of the arm is connected to the line configuration section. The embedded circular RFID tag of claim 3, wherein each of the connecting arms is curved. The embedded circular RFID tag of claim 1, wherein the elastic section is formed by two hook arms, one end of the two hook arms is connected to the line configuration section, and a gap is formed between the two hook arms . The embedded ring-shaped radio frequency identification tag of claim 1, wherein the circuit configuration section has a first via hole and a second via hole, The first via hole connects the upper conductive portion and the lower conductive portion, and the second via hole connects the impedance adjusting portion and the lower conductive portion. The embedded circular RFID tag of claim 1, wherein the line configuration section has an inner edge and an outer edge, and the upper conductive portion and the impedance adjustment portion are disposed along the inner edge. The embedded ring-shaped radio frequency identification tag of claim 1, further comprising an extended impedance adjusting portion corresponding to the impedance adjusting portion and spaced apart from the impedance adjusting portion, one end of the extended impedance adjusting portion The upper conductive portion is connected. The embedded circular RFID tag of claim 8, wherein the line configuration section has an inner edge and an outer edge, the extended impedance adjustment portion being disposed along the outer edge. The embedded ring-shaped radio frequency identification tag of claim 8, wherein the extended impedance adjusting portion is parallel to the impedance adjusting portion. The embedded circular RFID tag of claim 8, wherein the extended impedance adjusting portion and the impedance adjusting portion have an adjustment gap. The embedded ring-shaped radio frequency identification tag of claim 11, wherein the impedance adjusting portion and the upper conductive portion have a separation gap, and the separation gap communicates with the adjustment gap. The embedded ring-shaped radio frequency identification tag of claim 8, wherein the impedance adjusting portion has at least one cutting point, the extended impedance adjusting portion has at least one corresponding cutting point, and the at least one corresponding cutting point of the extended impedance adjusting portion The at least one cut point of the impedance adjusting portion is corresponding. The embedded ring-shaped radio frequency identification tag of claim 8, wherein the length of the extended impedance adjusting portion is greater than the length of the impedance adjusting portion. The embedded ring-shaped radio frequency identification tag of claim 1, wherein the impedance adjusting portion has at least one cut-off point, and the at least one cut-off point corresponds to a specific operating frequency band. The embedded ring-shaped radio frequency identification tag of claim 1, wherein the length of the impedance adjusting portion is smaller than the length of the upper conductive portion. The embedded circular RFID tag of claim 1, wherein the area of the impedance adjusting portion is smaller than the area of the upper conductive portion. The embedded circular RFID tag of claim 1, wherein the area of the lower conductive portion is larger than the area of the upper conductive portion. The embedded circular radio frequency identification tag of claim 1, wherein the length of the line configuration section is greater than the length of the elastic section. An embedded ring-shaped RFID tag includes: a ring-shaped tag antenna, comprising at least one annular substrate, an upper conductive portion and a lower conductive portion, the annular substrate having an elastic portion and a line arrangement portion, the upper conductive portion and The lower conductive portion is disposed in the circuit arrangement section; and a radio frequency identification chip electrically connected to the upper conductive portion.