RFID intelligent ear tag

Abstract

The invention relates to the technical field of intelligent ear tags, and discloses an RFID intelligent ear tag which comprises an ear tag body, a fixing sleeve is fixedly connected to the interior of the ear tag body, a positioning pressing piece is fixedly connected to the exterior of the fixing sleeve, a fixing pressing rod is inserted into the fixing sleeve, and the ear tag body comprises a mounting shell and a sealing cover. An anti-disassembly mechanism and an RFID system are arranged in the mounting shell; the anti-disassembly mechanism comprises a sealing ring, the mounting shell and the fixing sleeve are provided with a through groove in the sealing ring, and the outer part of the sealing ring is fixedly connected with a guide pin; the fixing pressing rod drives the first electrode plate and the second electrode plate to rotate through the first adjusting plate and the second adjusting plate, irreversible separation of electrode contact pieces of the first electrode plate and the second electrode plate is achieved, the effect of preventing the livestock ear tag from being violently detached or privately replaced is achieved, and the overall protection structure is simple and convenient to use. And meanwhile, the state switching stability and irreversibility of the RFID system are effectively ensured, and the cracking is difficult, so that the use effect and the use safety of the device are effectively ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of smart ear tags, in particular to an RFID smart ear tag. Background Art

[0002] In the livestock breeding process, in order to standardize the management of livestock, relevant departments have stipulated that livestock need to wear ear tags to record the identity information of livestock, so as to ensure the safety of processed food.

[0003] In a Chinese patent with patent publication number CN217546989U, a smart ear tag for livestock is disclosed, including a male nail, a female tag, an intelligent sensing device and a female tag fastening device. The female tag is an integral female tag formed by splicing a left female tag and a right female tag together. The upper ends of the left and right female tags are both provided with a semicircular female tag groove, and the two semicircular female tag grooves are spliced ​​together to form a circular female tag groove. By splicing the left and right female tags together, the effect of preventing theft and reuse is achieved.

[0004] However, the smart mother tag is fixedly installed by clamping the tip of the male nail into the circular hole formed by the left mother tag and the right mother tag. However, in actual use, when facing malicious removal or replacement, it is only necessary to cut off the male nail to replace the entire smart ear tag while replacing the male nail. This cannot completely prevent the ear tag from being stolen and reused. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides an RFID smart ear tag, which has the advantage of effectively preventing the smart ear tag from being misused and reused.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An RFID smart ear tag includes an ear tag body, a fixing sleeve fixedly connected to the interior of the ear tag body, a positioning pressing piece fixedly connected to the exterior of the fixing sleeve, a fixing pressing rod inserted into the interior of the fixing sleeve, the ear tag body including a mounting shell and a cover, and an anti-tamper mechanism and an RFID system disposed within the mounting shell;

[0008] The anti-disassembly mechanism includes a sealing ring, the mounting shell and the fixing sleeve are provided with a through groove at the position of the sealing ring, the outside of the sealing ring is fixedly connected to a guide pin, and the guide pin is slidably connected in the through groove;

[0009] A spiral guide groove is provided on the outside of the fixed pressure rod, and the end of the guide pin is embedded in the guide groove, so that the axial movement of the fixed pressure rod drives the guide pin to rotate radially; the deflection of the sealing ring triggers the opening and closing of the circuit of the RFID system through the electrical connecting piece.

[0010] Preferably: there are two sealing rings, both of which are rotatably connected to the inside of the mounting shell, the anti-disassembly mechanism also includes a first adjusting plate and a second adjusting plate, the first adjusting plate and the second adjusting plate are respectively limited and slidably connected to the outside of the two sealing rings, a first electrode plate and a second electrode plate are provided between the first adjusting plate and the second adjusting plate, the first adjusting plate and the first electrode plate are rotatably connected, the second electrode plate and the second adjusting plate are rotatably connected, a shift block is provided on the outside of the first adjusting plate, the first adjusting plate unidirectionally shifts the second electrode plate to rotate by the shift block, a second ratchet mechanism is provided between the second adjusting plate and the second electrode plate, the interior of the mounting shell is movably connected with a fixed pressure plate, the interior of the mounting shell is also provided with a fixing ring for fixing the pressure plate, a spring 1 is provided between the first adjusting plate and the mounting shell, a spring 2 is provided between the second adjusting plate and the fixed pressure plate, and a first ratchet mechanism is provided between the first electrode plate and the fixed pressure plate.

[0011] Preferably, the first electrode plate rotates in a direction opposite to the direction in which the second electrode plate is rotated by the second adjustment plate under the action of the second ratchet mechanism, and a rotation damper is provided between the second electrode plate and the fixed pressure plate.

[0012] Preferably: the contact surface between the first electrode plate and the second electrode plate is provided with an electrode contact piece, the RFID system is installed on the outside of the fixed pressure plate, the RFID system includes a compiler transceiver, a battery and a circuit opening and closing regulator, and an electrical connecting piece is provided on the outside of the sealing ring close to the side of the RFID system, and the electrode contact piece is electrically connected to the circuit opening and closing regulator through the electrical connecting piece.

[0013] Preferably: the electrode contacts arranged outside the first electrode plate include a1 contact, a2 contact, a3 contact, and a4 contact, and the electrode contacts arranged outside the second electrode plate include A1 contact, A2 contact, A3 contact, and A4 contact. When the a1 contact, a2 contact, a3 contact, and a4 contact completely overlap with the A1 contact, A2 contact, A3 contact, and A4 contact, the RFID system circuit is connected, and when the Aa1 contact, Aa2 contact, Aa3 contact, and Aa4 contact overlap, they are in a circuit series state.

[0014] Preferably, the electrode contacts outside the first electrode plate further include a b1 contact, a b2 contact, a b3 contact and a b4 contact.

[0015] Preferably, a connecting wire is provided between the second electrode plate and the electrical connection sheet, the guide groove of the fixed pressure rod drives the guide pin to deflect by 30°, and when the second electrode plate rotates by 30°, the connecting wire reaches its stretched length.

[0016] Preferably, at least six positioning pressing pieces are provided, and a V-shaped groove is provided at the connection between the positioning pressing piece and the fixing sleeve. The positioning pressing piece flips along the V-shaped groove under the action of the fixing pressure rod.

[0017] Preferably, the fixed pressure rod includes a cone head rod and an adjusting rod, the adjusting rod is inserted into the inside of the cone head rod, and a bayonet is provided between the adjusting rod and the cone head rod for controlling the connection and separation between the adjusting rod and the cone head rod.

[0018] Beneficial effects of the present invention:

[0019] 1. The RFID smart ear tag has a fixed pressure rod that drives the first electrode plate and the second electrode plate to rotate through the first adjustment plate and the second adjustment plate, so that the electrode contacts of the first electrode plate and the second electrode plate are irreversibly separated, thereby preventing the violent removal or unauthorized replacement of the livestock ear tag. The overall protective structure is simple, and at the same time, it effectively ensures the stable and irreversible state switching of the RFID system, and is difficult to crack, thereby effectively ensuring the use effect and safety of the device.

[0020] 2. The RFID smart ear tag is configured with different electrode contacts on the first electrode plate and the second electrode plate, so that the RFID is divided into multiple states, thereby facilitating the judgment of ear information and improving the stability and effect of the device. By setting a connecting wire of a set length, the fixed pressure rod drives the second electrode plate to rotate outward 30° for the second time, and the connecting wire is broken, thereby causing the RFID system to be disconnected. At the same time, it is determined that it is in the second replacement state. The time when the ear tag is replaced privately can be determined by extracting the sealed state information, and the activation state of the RFID system of the device is further increased. The irreversible effect, thereby further improving the use effect of the device.

[0021] 3. The RFID smart ear tag presses the fixed pressure rod in reverse to squeeze the positioning pressure piece, so that the positioning pressure piece spreads outward in a discrete shape. At the same time, the fixed pressure rod is clamped inside the fixed sleeve to complete the installation of the smart ear tag. The device is designed as an integrated device, avoiding the trouble of male and female labels, making the overall operation simpler, thereby ensuring the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the RFID smart ear tag body of the present invention;

[0023] Figure 2 This is a schematic diagram of the connection between the mounting housing, the cover, and the anti-tamper mechanism of the present invention;

[0024] Figure 3 Schematic diagram of the RFID system of the present invention;

[0025] Figure 4This is a schematic diagram of the disassembly of the RFID smart ear tag body of the present invention;

[0026] Figure 5 This is a schematic diagram of the anti-dismantling mechanism and a partial cross-sectional view of the present invention;

[0027] Figure 6 This is a schematic cross-sectional view of the main body of the RFID smart ear tag of the present invention;

[0028] Figure 7 This is a schematic diagram of a guide groove provided on the cone head rod of the present invention;

[0029] Figure 8 This is a schematic diagram of a sectional front view of the RFID smart ear tag body of the present invention;

[0030] Figure 9 Schematic diagram of the distribution of electrode contacts of the first electrode plate and the second electrode plate of the present invention;

[0031] Figure 10 This is a schematic diagram of the positioning tablet separation state of the present invention.

[0032] In the figure: 1. Ear tag body; 2. Positioning pressure piece; 3. Fixing pressure rod; 4. Anti-tamper mechanism; 5. RFID system;

[0033] 11. Mounting shell; 12. Cover; 21. Fixing sleeve; 31. Cone rod; 311. Guide groove; 32. Adjusting rod;

[0034] 41. First adjustment plate; 411. Shift block; 412. Spring 1; 42. First electrode plate; 43. Second electrode plate; 44. Second adjustment plate; 441. Spring 2; 45. Fixed pressure plate; 46. Sealing ring; 47. Guide pin; 48. Electrical connection piece; 481. Connecting wire; 49. Electrode contact piece;

[0035] 51. Compiler transceiver; 52. Battery; 53. Circuit switch controller. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figure 1 - Figure 10An RFID smart ear tag includes an ear tag body 1, a fixing sleeve 21 fixedly connected to the interior of the ear tag body 1, a positioning pressing piece 2 fixedly connected to the exterior of the fixing sleeve 21, a fixing pressing rod 3 inserted into the interior of the fixing sleeve 21, the ear tag body 1 including a mounting shell 11 and a cover 12, an anti-tamper mechanism 4 and an RFID system 5 are provided inside the mounting shell 11, and the RFID system 5 includes a compiler transceiver 51, a battery 52, and a circuit opening and closing controller 53;

[0038] It should be noted that an elastic pin and a slot are provided between the fixed pressure rod 3 and the fixed sleeve 21 respectively. When the elastic pin of the fixed pressure rod 3 moves to the slot position of the fixed sleeve 21, the elastic pin is automatically locked into the slot.

[0039] It should be noted that the RFID system 5 includes an initial state, an activated state, a sealed state and a closed state.

[0040] The initial state is the factory initialization state before the RFID smart ear tag is powered on for the first time;

[0041] The activated state is the first time that the RFID smart ear tag enters the activated state, and the RFID system 5 is powered on to record livestock identification information;

[0042] The sealed state is the state where the fixed pressure rod 3 and the ear tag body 1 of the RFID smart ear tag are separated for the first time. At this time, the RFID system 5 is powered on and is used to record the separation time of the fixed pressure rod 3 and the ear tag body 1 and the location information of the ear tag;

[0043] In the closed state, when the fixed pressure rod 3 is inserted into the ear tag body 1 again, the internal circuit is broken, the RFID system 5 is in a power-off state, and the entire system is in an unusable state.

[0044] refer to Figure 5 and Figure 6 , the anti-disassembly mechanism 4 includes a sealing ring 46, the mounting shell 11 and the fixing sleeve 21 are provided with a through groove at the position of the sealing ring 46, the outside of the sealing ring 46 is fixedly connected with a guide pin 47, and the guide pin 47 is slidably connected in the through groove;

[0045] A spiral guide groove is provided on the outside of the fixed pressure rod, and the end of the guide pin is embedded in the guide groove, so that the axial movement of the fixed pressure rod drives the guide pin to rotate radially; the deflection of the sealing ring triggers the opening and closing of the circuit of the RFID system through the electrical connecting piece.

[0046] It should be noted that, during the installation process, the fixed pressure rod 3 and the positioning pressure plate 2 are passed through the ear holes of the livestock using ear tag pliers.

[0047] Among them, there are at least six positioning pressing pieces 2, and a "V"-shaped groove is provided at the connection between the positioning pressing piece 2 and the fixing sleeve 21. The positioning pressing piece 2 flips along the "V"-shaped groove under the action of the fixing pressure rod 3.

[0048] The fixed pressure rod 3 includes a cone head rod 31 and an adjusting rod 32. The guide groove 311 is opened on the outside of the cone head rod 31. The adjusting rod 32 is inserted into the inside of the cone head rod 31. A bayonet is provided between the adjusting rod 32 and the cone head rod 31 for controlling the connection and separation between the adjusting rod 32 and the cone head rod 31.

[0049] It should be noted that the bayonet can be disengaged from the cone head rod 31 by rotating the adjusting rod 32 , thereby separating the cone head rod 31 and the adjusting rod 32 .

[0050] refer to Figure 1 and Figure 10 When the fixed pressure rod 3 and the positioning pressure piece 2 pass through the ear hole of the livestock, the fixed pressure rod 3 is pressed in the reverse direction, so that the fixed pressure rod 3 squeezes the positioning pressure piece 2, thereby causing the positioning pressure piece 2 to spread outward in a discrete manner. At the same time, the fixed pressure rod 3 is clamped inside the fixed sleeve 21, completing the installation of the smart ear tag.

[0051] When the installation is completed, the adjusting rod 32 and the cone head rod 31 are separated.

[0052] The device is designed as an integrated unit, avoiding the hassle of male and female labels, making the overall operation simpler and thus ensuring the effectiveness of the device.

[0053] In an optional embodiment, two sealing rings 46 are provided, both of which are rotatably connected to the interior of the mounting shell 11, and the anti-disassembly mechanism 4 further includes a first adjustment plate 41 and a second adjustment plate 44, the first adjustment plate 41 and the second adjustment plate 44 are respectively limited and slidably connected to the outside of the two sealing rings 46, a first electrode plate 42 and a second electrode plate 43 are provided between the first adjustment plate 41 and the second adjustment plate 44, the first adjustment plate 41 and the first electrode plate 42 are rotatably connected, the second electrode plate 43 and the second adjustment plate 44 are rotatably connected, and the outside of the first adjustment plate 41 is provided with The shift block 411, the first adjustment plate 41 is used to unidirectionally shift the second electrode plate 43 to rotate, a second ratchet mechanism is provided between the second adjustment plate 44 and the second electrode plate 43, the interior of the mounting shell 11 is movably connected with a fixed pressure plate 45, and the interior of the mounting shell 11 is also provided with a fixing ring 13 for fixing the pressure plate 45, a spring 1 412 is provided between the first adjustment plate 41 and the mounting shell 11, a spring 2 441 is provided between the second adjustment plate 44 and the fixed pressure plate 45, and a first ratchet mechanism is provided between the first electrode plate 42 and the fixed pressure plate 45.

[0054] The guide groove 311 of the fixed pressure rod 3 drives the guide pin 47 to deflect by an angle of 30°.

[0055] refer to Figure 6 And Figure 7 It is to be noted that, in the process of fixing the pressure rod 3 reversely, the taper head rod 31 slides rightward inside the fixing sleeve 21, the taper head rod 31 drives the two guide pins 47 to deflect 30° inward through the guide groove 311, the two guide pins 47 drive the first adjusting plate 41 and the second adjusting plate 44 to deflect 30° inward through the sealing ring 46, at this time, the first adjusting plate 41 drives the first electrode plate 42 to deflect 30° inward through the push block 411, while the second adjusting plate 44 idles when rotating, and the second electrode plate 43 keeps the position unchanged.

[0056] At this time, the energization of the RFID system 5 is completed, and the RFID intelligent label enters the activated state.

[0057] In an optional embodiment, the rotating direction of the first electrode plate 42 under the action of the first ratchet mechanism is opposite to the rotating direction of the second electrode plate 43 driven by the second adjusting plate 44 under the action of the second ratchet mechanism, and a rotating damping is arranged between the second electrode plate 43 and the fixed pressing plate 45.

[0058] Referring to Figure 3 The electrode contact 49 is arranged on the contact surface of the first electrode plate 42 and the second electrode plate 43, the RFID system 5 is installed outside the fixed pressing plate 45, and the electrode contact 49 is electrically connected to the circuit opening and closing controller 53 through the electric connection piece 48 arranged outside the sealing ring 46 close to the RFID system 5.

[0059] It is to be noted that, by arranging the rotating damping between the second electrode plate 43 and the fixed pressing plate 45, the stability of the second electrode plate 43 can be effectively ensured when the second adjusting plate 44 rotates inward.

[0060] Referring to Figure 4-Figure 8 When the taper head rod 31 moves leftward in the violent removal, the guide groove 311 drives the first adjusting plate 41 and the second adjusting plate 44 to rotate outward through the guide pin 47 and the sealing ring 46.

[0061] At this time, the first adjusting plate 41 idles, the second adjusting plate 44 drives the second electrode plate 43 to rotate outward through the second ratchet mechanism, and the first electrode plate 42 and the second electrode plate 43 are misaligned by 30°.

[0062] In an optional embodiment, in an optional embodiment, the electrode contact 49 arranged on the outside of the first electrode plate 42 includes a1 contact, a2 contact, a3 contact, and a4 contact, and the electrode contact 49 arranged on the outside of the second electrode plate 43 includes A1 contact, A2 contact, A3 contact, and A4 contact. When the a1 contact, a2 contact, a3 contact, and a4 contact completely overlap with the A1 contact, A2 contact, A3 contact, and A4 contact, the RFID system 5 circuit is connected, and when the Aa1 contact, Aa2 contact, Aa3 contact, and Aa4 contact overlap, they are in a circuit series state.

[0063] The electrode contacts 49 outside the first electrode plate 42 further include a b1 contact, a b2 contact, a b3 contact, and a b4 contact.

[0064] It should be noted that, in the initial state: the a1 contact sheet, a2 contact sheet, a3 contact sheet, and a4 contact sheet are completely misaligned with the A1 contact sheet, A2 contact sheet, A3 contact sheet, and A4 contact sheet respectively;

[0065] In the activated state: the a1 contact sheet, a2 contact sheet, a3 contact sheet, and a4 contact sheet completely overlap with the A1 contact sheet, A2 contact sheet, A3 contact sheet, and A4 contact sheet respectively;

[0066] In the sealed state: the b1 contact sheet, b2 contact sheet, b3 contact sheet, and b4 contact sheet overlap with the A1 contact sheet, A2 contact sheet, A3 contact sheet, and A4 contact sheet respectively;

[0067] And when the cone head rod 31 is removed, since the second adjustment plate 44 has driven the second electrode plate 43 to rotate outward by 30°, and the first electrode plate 42 is in the ultimate position state at this time and no longer changes, the second electrode plate 43 is deflected outward by 30°, and the electrode contacts 49 of the first electrode plate 42 and the second electrode plate 43 are irreversibly separated, thereby preventing the violent removal or private replacement of the livestock ear tags. The overall protective structure is simple, and at the same time effectively ensures that the state switching of the RFID system 5 is stable and irreversible, and difficult to crack, thereby effectively ensuring the use effect and safety of the device.

[0068] refer to Figure 6 In an optional embodiment, a connecting wire 481 is provided between the second electrode plate 43 and the electrical connection sheet 48. When the second electrode plate 43 rotates 30 degrees, the connecting wire 481 reaches a stretched length.

[0069] When the ear tag falls off due to fighting between livestock or other factors, the ear tag enters the sealed state. In the sealed state, the relevant staff is notified in time to replace the new ear tag. At this time, the staff can promptly extract the record information of the sealed ear tag, so as to judge the on-site situation in time according to the on-site situation. At the same time, if a new fixed pressure rod 3 is replaced privately, when the ear tag is removed from the market, the fixed pressure rod 3 will drive the second electrode plate 43 to rotate outward 30° again, and the connecting wire 481 will be pulled off, causing the RFID system 5 to be disconnected. At the same time, it is judged that it is in the secondary replacement state, and the time when the ear tag was privately replaced can be judged by extracting the sealed state information, and the activation state of the RFID system 5 of the device is further increased. The irreversible effect, thereby further increasing the use effect of the device.

[0070] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An RFID smart ear tag, comprising an ear tag body (1), characterized in that: The interior of the ear tag body (1) is fixedly connected to a fixing sleeve (21), the exterior of the fixing sleeve (21) is fixedly connected to a positioning pressing piece (2), the interior of the fixing sleeve (21) is plugged with a fixing pressing rod (3), the ear tag body (1) comprises a mounting shell (11) and a cover (12), and the interior of the mounting shell (11) is provided with an anti-disassembly mechanism (4) and an RFID system (5); The anti-disassembly mechanism (4) includes a sealing ring (46), the mounting shell (11) and the fixing sleeve (21) are provided with a through groove at the position of the sealing ring (46), the outside of the sealing ring (46) is fixedly connected with a guide pin (47), and the guide pin (47) is slidably connected in the through groove; A spiral guide groove (311) is provided on the outside of the fixed pressure rod (3), and the end of the guide pin (47) is embedded in the guide groove (311), so that the axial movement of the fixed pressure rod (3) drives the guide pin (47) to rotate radially; the deflection of the sealing ring (46) triggers the opening and closing of the circuit of the RFID system (5) through the electrical connecting piece (48).

2. The RFID smart ear tag according to claim 1, characterized in that: The sealing rings (46) are provided with two, both of which are rotatably connected to the inside of the mounting shell (11). The anti-disassembly mechanism (4) also includes a first adjustment plate (41) and a second adjustment plate (44). The first adjustment plate (41) and the second adjustment plate (44) are respectively connected to the outside of the two sealing rings (46) in a limited sliding manner. A first electrode plate (42) and a second electrode plate (43) are provided between the first adjustment plate (41) and the second adjustment plate (44). The first adjustment plate (41) and the first electrode plate (42) are rotatably connected, and the second electrode plate (43) and the second adjustment plate (44) are rotatably connected. A shift block (411) is provided on the outside of the first adjustment plate (41). The regulating plate (41) is unidirectionally driven by the shifting block (411) to rotate the second electrode plate (43); a second ratchet mechanism is provided between the second regulating plate (44) and the second electrode plate (43); a fixed pressure plate (45) is movably connected to the interior of the mounting shell (11); a fixing ring (13) for fixing the pressure plate (45) is also provided inside the mounting shell (11); a spring 1 (412) is provided between the first regulating plate (41) and the mounting shell (11); a spring 2 (441) is provided between the second regulating plate (44) and the fixed pressure plate (45); and a first ratchet mechanism is provided between the first electrode plate (42) and the fixed pressure plate (45).

3. The RFID smart ear tag according to claim 2, characterized in that: The first electrode plate (42) rotates in a direction opposite to the direction in which the second electrode plate (43) is driven by the second adjustment plate (44) under the action of the second ratchet mechanism. A rotation damper is provided between the second electrode plate (43) and the fixed pressure plate (45).

4. The RFID smart ear tag according to claim 2, characterized in that: The contact surface between the first electrode plate (42) and the second electrode plate (43) is provided with an electrode contact piece (49); the RFID system (5) is installed on the outside of the fixed pressure plate (45); the RFID system (5) includes a compiler transceiver (51), a battery (52) and a circuit opening and closing regulator (53); an electrical connection piece (48) is provided on the outside of the sealing ring (46) close to the side of the RFID system (5); and the electrode contact piece (49) is electrically connected to the circuit opening and closing regulator (53) through the electrical connection piece (48).

5. The RFID smart ear tag according to claim 4, characterized in that: The electrode contact pieces (49) arranged outside the first electrode plate (42) include a1 contact piece, a2 contact piece, a3 contact piece, and a4 contact piece, and the electrode contact pieces (49) arranged outside the second electrode plate (43) include A1 contact piece, A2 contact piece, A3 contact piece, and A4 contact piece. When the a1 contact piece, a2 contact piece, a3 contact piece, and a4 contact piece completely overlap with the A1 contact piece, A2 contact piece, A3 contact piece, and A4 contact piece, the RFID system (5) is circuit-connected, and when the Aa1 contact piece, Aa2 contact piece, Aa3 contact piece, and Aa4 contact piece overlap, the circuit is in a series state.

6. The RFID smart ear tag according to claim 5, characterized in that: The electrode contacts (49) outside the first electrode plate (42) further include a b1 contact, a b2 contact, a b3 contact, and a b4 contact.

7. The RFID smart ear tag according to claim 4, characterized in that: A connecting wire (481) is provided between the second electrode plate (43) and the electrical connecting piece (48); the guide groove (311) of the fixed pressure rod (3) drives the guide pin (47) to deflect by 30°; when the second electrode plate (43) rotates by 30°, the connecting wire (481) reaches its stretched length.

8. The RFID smart ear tag according to claim 1, characterized in that: The positioning pressing pieces (2) are provided with at least six pieces, and a "V"-shaped groove is provided at the connection between the positioning pressing piece (2) and the fixing sleeve (21). The positioning pressing piece (2) is turned over along the "V"-shaped groove under the action of the fixing pressure rod (3).

9. The RFID smart ear tag according to claim 1, characterized in that: The fixed pressure rod (3) comprises a cone-shaped rod (31) and an adjusting rod (32). The adjusting rod (32) is inserted into the interior of the cone-shaped rod (31). A bayonet is provided between the adjusting rod (32) and the cone-shaped rod (31) for controlling the connection and separation between the adjusting rod (32) and the cone-shaped rod (31).

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