RFID read-write device and read-write method thereof

Abstract

The invention discloses an RFID read-write device and a read-write method thereof, and relates to the field of RFID read-write equipment. According to the RFID read-write device and the read-write method thereof, the RFID read-write device comprises an equipment base and a mobile host fixedly arranged on the equipment base, an RFID read-write antenna module and a handle are installed on the two sides of the bottom of the equipment base respectively, and a connecting mechanism is arranged between the RFID read-write antenna module and the equipment base. According to the RFID read-write device and the read-write method thereof, the servo motor is controlled to rotate, during use, the RFID read-write antenna module is overturned out of the storage station, the telescopic connecting plate drives the RFID read-write antenna module to move forwards, the reading distance is adjusted, after use is finished and the telescopic connecting plate shrinks inwards, the RFID read-write antenna module is overturned to enter the storage station, and the RFID read-write antenna module enters the storage station. On one hand, misreading of goods labels of other shelf layers due to the fact that the read-write range of the RFID read-write antenna module is too large is avoided, the goods labels in the deep position of the goods shelf can be read conveniently, and on the other hand, the RFID read-write antenna module can be protected conveniently during carrying.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of RFID reading and writing equipment, in particular to an RFID reading and writing device and a reading and writing method thereof. BACKGROUND

[0002] The RFID reading and writing device is a reading and writing device with an RFID identification system, which can quickly discover nearby RFID tags through the RFID antenna module, can realize data writing to the tags, and can also read data from the tags with existing data records. This technology is widely used in current warehousing industry.

[0003] By moving the handheld RFID reading and writing device in the shelves of the warehouse, the RFID reader automatically performs continuous identification and reading, thereby quickly checking the goods, without the need for scanning one by one, the speed is faster, and the accuracy is very high.

[0004] However, in practical application, when used in some combined warehousing scenarios, if the reading and writing range of the RFID reader is too large, the RFID products on other shelves will often be read, resulting in data errors in the goods inventory. Therefore, for such situations, an RFID reader with a smaller reading and writing range needs to be selected, but this will make the handheld RFID reader need to be inserted into the shelf to realize scanning and reading of the internal goods when facing a shelf with a long depth, which is very inconvenient to use. Moreover, the RFID antenna module of such a handheld RFID reader is usually fixed and inherited at the front end of the device, which is extremely easy to collide and cause damage to the core RFID antenna module. Therefore, an RFID reading and writing device and a reading and writing method thereof are provided to solve the above problems. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides an RFID reading and writing device and a reading and writing method thereof, which solves the problem that the handheld RFID reader needs to be inserted into the shelf to realize scanning and reading of the internal goods when facing a shelf with a long depth, which is very inconvenient to use, and the RFID antenna module of such a handheld RFID reader is usually fixed and inherited at the front end of the device, which is extremely easy to collide and cause damage to the core RFID antenna module.

[0006] To achieve the above purpose, the present application is implemented by the following technical scheme: an RFID reading and writing device, comprising a handheld RFID reader, the handheld RFID reader comprising a device seat and a mobile host fixedly arranged on the device seat, and an RFID reading and writing antenna module and a handle being respectively installed on the bottom of the device seat on both sides;

[0007] A connecting mechanism is arranged between the RFID reading and writing antenna module and the device seat, and the connecting mechanism comprises:

[0008] The telescopic connecting plate is movably inserted at one end into the inner bottom of the equipment seat, and the RFID read-write antenna module is rotationally connected at the other end of the middle part of the telescopic connecting plate;

[0009] The multi-connected driving member is arranged in the interior of the telescopic connecting plate, and comprises a driving screw rod, a sliding push frame, a gear and a rack. The driving screw rod is rotationally connected in the interior of the telescopic connecting plate, and is threadedly connected with the equipment seat. The sliding push frame is slidingly connected to the outer surface of the driving screw rod. The gear is fixedly arranged at the top of both sides of the RFID read-write antenna module. The rack is engaged with the gear. One side of the sliding push frame is abutted against the equipment seat, and the other side of the sliding push frame is drivingly connected with the rack.

[0010] Preferably, the equipment seat comprises a seat body and a receiving groove arranged in the inner top of the front end of the seat body. The telescopic connecting plate is movably inserted into the interior of the receiving groove. The inner top of the receiving groove is provided with a movable groove. The movable groove is slidingly provided with a connecting block in the interior. The top of the telescopic connecting plate is provided with a limiting groove. The connecting block is slidingly connected in the limiting groove. The driving screw rod is threadedly connected in the interior of the connecting block, and the connecting block is abutted against the sliding push frame.

[0011] Preferably, the interior of the movable groove is fixedly provided with a fixed shaft. The outer surface of the outward one end of the fixed shaft movably sleeved with a first spring. The connecting block is movably sleeved on the outer surface of the inward one end of the fixed shaft. The front end of the telescopic connecting plate is integrally formed with a rotating support. The inner top of the rotating support is fixedly provided with a servo motor. The output end of the servo motor is fixedly connected with the driving screw rod. The outer surface of the end of the driving screw rod close to the servo motor is movably sleeved with a second spring.

[0012] Preferably, the RFID read-write antenna module is rotationally connected to the inner bottom of the rotating support. The gear is rotationally connected in the interior of the rotating support. The top of the rack is fixedly provided with a connecting part. The interior of the rotating support is fixedly connected with a guide rail. The connecting part is slidingly connected to the outer surface of the guide rail. The sliding push frame is fixedly connected with a traction cable between the rack. The interior of the rotating support is fixedly installed with a fixed pulley. The traction cable passes through the fixed pulley to change the traction direction.

[0013] Preferably, the inner wall of the receiving groove is integrally formed with a positioning strip on both sides. The telescopic connecting plate is provided with a positioning groove on both sides. The positioning strip is movably inserted into the positioning groove. The top of the telescopic connecting plate is provided with an anti-falling groove on both sides. The inner top of the receiving groove is fixedly provided with an anti-falling suspension block. The anti-falling suspension block is slidingly connected in the anti-falling groove.

[0014] Preferably, the lower surface of the telescopic connecting plate is integrally formed with a receiving station. The RFID read-write antenna module is turned into the receiving station for storage.

[0015] Preferably, the end of the seat body is provided with a charging port, and the upper surface of the seat body is fixedly provided with a physical keyboard, both of which are electrically connected with the mobile host, and the front end of the seat body is provided with a matrix type illuminating lamp.

[0016] Preferably, the handle comprises a handle rod and a button switch mounted on the outer surface of the handle rod, the top of the handle rod is fixedly welded with a mounting plate, the mounting plate is fixedly mounted on the lower surface of the seat body through bolts, the bottom end of the handle rod is provided with a battery module, and a connecting positioning piece is mounted between the handle rod and the battery module.

[0017] Preferably, the connecting positioning piece comprises a T-shaped connecting pipe and a bottom plate fixedly arranged at the bottom end of the T-shaped connecting pipe, the outer surface of the T-shaped connecting pipe is movably sleeved with a third spring, both ends of the top of the bottom plate are fixedly provided with a positioning column, and the top end of the T-shaped connecting pipe and the third spring are arranged in the handle rod.

[0018] Preferably, a reading and writing method of an RFID reading and writing device comprises the following steps:

[0019] S1, handheld reading and writing, the RFID reading and writing antenna module is perpendicular to the seat body, the first group of button switches are pressed through the handheld handle rod, and the RFID reading and writing antenna module is started to perform RFID tag handheld reading and writing;

[0020] S2, desktop writing, the RFID reading and writing antenna module is adjusted to a normally open state, the battery module is rotated to be directed, the rear side of the battery module is in the same plane as the rear side of the seat body, the device is placed on the desktop, and a plurality of RFID tags are sequentially written through the front side of the RFID reading and writing antenna module to realize continuous writing of the tags;

[0021] S3, long-distance reading, the second group of button switches are pressed, the telescopic connecting plate drives the RFID reading and writing antenna module to slide outward, and the distance between the RFID reading and writing antenna module and the handle rod is adjusted;

[0022] S4, storage and carrying, the third group of button switches are pressed, the telescopic connecting plate is retracted to the bottom of the seat body, and then the RFID reading and writing antenna module is automatically turned over to enter the storage station to realize storage protection during carrying.

[0023] The application discloses an RFID reading and writing device and a reading and writing method thereof, and has the following beneficial effects:

[0024] 1、the RFID read-write device and its read-write method, through the handheld holding rod, press the middle group of button switches, make the servo motor rotate counterclockwise, at this time under the action of the first spring and the second spring, the connecting block moves away from the end of the servo motor, so that the rack slides away from the end of the servo motor, so that the gear drives the RFID read-write antenna module to turn over and move out from the storage station, then the telescopic connecting plate is pushed out, so that the distance between the RFID read-write antenna module and the holding rod is suitable for use, after use, by pressing the bottom group of button switches, the telescopic connecting plate is retracted inward, after completion, the RFID read-write antenna module turns over and enters the storage station, on the one hand, it avoids the RFID read-write antenna module reading range too large leading to misreading other shelf layer goods label, also facilitates reading the goods label in the deep of the goods shelf, on the other hand, it is also convenient to protect the RFID read-write antenna module when carrying.

[0025] 2、the RFID read-write device and its read-write method, in the state that the RFID read-write antenna module is in the storage station, pull down the battery module, make the T-shaped connecting pipe slide downward in the holding rod, make the third spring be compressed, at the same time, the bottom plate drives two groups of positioning columns to move out from the holding rod, at this time, rotate the battery module by 180 degrees, then release the battery module, make it move upward under the action of the third spring, so that the positioning column is inserted into the holding rod for positioning, at this time, the back side of the battery module and the back side of the seat body are in the same plane, at this time, place the device on the desktop, control the RFID read-write antenna module to be in the normal open state, at this time, a plurality of RFID labels can be placed in front of the RFID read-write antenna module in turn for label writing, which is convenient for continuous writing of multiple labels. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0027] Figure 1 It is a schematic diagram of the outer surface structure of the handheld RFID reader of the present application;

[0028] Figure 2 It is a schematic diagram of the folding state of the RFID read-write antenna module of the present application;

[0029] Figure 3 It is a schematic diagram of the desktop placement and use state of the handheld RFID reader of the present application;

[0030] Figure 4The top structure diagram of the handheld RFID reader in the stretched state of the application;

[0031] Figure 5 The bottom structure diagram of the handheld RFID reader in the stretched state of the application;

[0032] Figure 6 The top structure diagram of the connecting mechanism of the application;

[0033] Figure 7 The internal structure sectional view of the connecting mechanism of the application;

[0034] Figure 8 The bottom structure diagram of the seat of the application;

[0035] Figure 9 The exploded view of the outer surface structure of the handle of the application.

[0036] In the figure: 1, handheld RFID reader; 11, device seat; 111, seat; 112, charging port; 113, physical keyboard; 114, matrix type illuminating lamp; 115, storage groove; 116, positioning strip; 117, anti-falling suspension block; 118, movable groove; 119, fixed shaft; 1110, connecting block; 1111, first spring; 12, mobile host; 13, RFID reading and writing antenna module; 14, handle; 141, grip rod; 142, button switch; 143, battery module; 144, mounting plate; 145, connecting positioning piece; 1451, T-shaped connecting pipe; 1452, bottom plate; 1453, third spring; 1454, positioning column; 2, connecting mechanism; 21, telescopic connecting plate; 22, limiting groove; 23, anti-falling groove; 24, storage station; 25, rotating support; 26, positioning groove; 27, multi-connection driving piece; 271, servo motor; 272, driving screw; 273, sliding push rack; 274, second spring; 275, traction steel cable; 276, fixed pulley; 277, connecting part; 278, guide rail; 279, gear; 2710, rack. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the application more clear, the technical scheme in the embodiments of the application is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0038] The embodiment of the present application provides an RFID reading and writing device and a reading and writing method thereof, and solves the problem that a handheld RFID reader needs to be put into a shelf to realize scanning and reading of internal goods when facing a shelf with a long depth, which is very inconvenient, and the RFID antenna module of the handheld RFID reader is usually fixed on the front end of the device and is easily damaged due to collision.

[0039] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the drawings of the specification and specific embodiments.

[0040] The embodiment of the present application discloses an RFID reading and writing device and a reading and writing method thereof.

[0041] According to the drawings Figures 1-9 As shown in the drawings, the handheld RFID reader 1 includes a device seat 11 and a mobile host 12 fixedly arranged on the device seat 11, and the bottom of the device seat 11 is respectively provided with an RFID reading and writing antenna module 13 and a handle 14;

[0042] The RFID reading and writing antenna module 13 and the device seat 11 are provided with a connecting mechanism 2, and the connecting mechanism 2 includes;

[0043] The telescopic connecting plate 21 is movably inserted into the inner bottom of the device seat 11, and the RFID reading and writing antenna module 13 is rotatably connected to the middle part of the other end of the telescopic connecting plate 21;

[0044] The multi-union driving part 27 is arranged in the inside of the telescopic connecting plate 21, and the multi-union driving part 27 includes a driving screw rod 272, a sliding push frame 273, a gear 279 and a rack 2710, the driving screw rod 272 is rotatably connected to the inside of the telescopic connecting plate 21, and the driving screw rod 272 is threadedly connected with the device seat 11, the sliding push frame 273 is slidably connected to the outer surface of the driving screw rod 272, the gear 279 is fixedly arranged on the top of both sides of the RFID reading and writing antenna module 13, the rack 2710 is engaged with the gear 279, one side of the sliding push frame 273 is abutted with the device seat 11, and the other side of the sliding push frame 273 is drivingly connected with the rack 2710.

[0045] The device seat 11 includes a seat body 111 and a receiving groove 115 arranged in the inner top of the front end of the seat body 111, the telescopic connecting plate 21 is movably inserted into the inside of the receiving groove 115, the inner top of the receiving groove 115 is provided with a movable groove 118, the inside of the movable groove 118 is slidably provided with a connecting block 1110, the top of the telescopic connecting plate 21 is provided with a limiting groove 22, the connecting block 1110 is slidably connected in the limiting groove 22, the driving screw rod 272 is threadedly connected in the inside of the connecting block 1110, and the connecting block 1110 is abutted with the sliding push frame 273.

[0046] The inner part of the movable groove 118 is fixedly provided with a fixed shaft 119, the outer surface of the outward end of the fixed shaft 119 is movably sleeved with a first spring 1111, the connecting block 1110 is movably sleeved on the outer surface of the inward end of the fixed shaft 119, the front end of the telescopic connecting plate 21 is integrally formed with a rotating support 25, the inner top of the rotating support 25 is fixedly provided with a servo motor 271, the output end of the servo motor 271 is fixedly connected with a driving screw 272, the outer surface of the end of the driving screw 272 close to the servo motor 271 is movably sleeved with a second spring 274.

[0047] The RFID read-write antenna module 13 is rotationally connected to the inner bottom of the rotating support 25, the gear 279 is rotationally connected to the inner part of the rotating support 25, the top of the rack 2710 is fixedly provided with a connecting part 277, the inner part of the rotating support 25 is fixedly connected with a guide rail 278, the connecting part 277 is slidingly connected to the outer surface of the guide rail 278, the traction cable 275 is fixedly connected between the sliding push bracket 273 and the rack 2710, the inner part of the rotating support 25 is fixedly installed with a fixed pulley 276, the traction cable 275 passes through the fixed pulley 276 to change the traction direction.

[0048] The inner wall of the receiving groove 115 is integrally formed with a positioning strip 116 on both sides, the telescopic connecting plate 21 is provided with a positioning groove 26 on both sides, the positioning strip 116 is movably inserted into the positioning groove 26, the telescopic connecting plate 21 is provided with an anti-falling groove 23 on both sides of the top, the inner top of the receiving groove 115 is fixedly provided with an anti-falling suspension block 117, the anti-falling suspension block 117 is slidingly connected in the anti-falling groove 23, the anti-falling suspension block 117 provides more vertical traction for the telescopic connecting plate 21, avoiding the telescopic connecting plate 21 from being deflected downward after being stretched outwards due to gravity.

[0049] The lower surface of the telescopic connecting plate 21 is integrally formed with a receiving station 24, the RFID read-write antenna module 13 is flipped into the receiving station 24 for storage, for protecting the RFID read-write antenna module 13 during carrying.

[0050] The end of the seat body 111 is provided with a charging port 112, the upper surface of the seat body 111 is fixedly provided with a physical keyboard 113, the charging port 112 and the physical keyboard 113 are electrically connected with the mobile host 12, the mobile host 12 is controlled through the physical keyboard 113, the read mode and the write mode can be adjusted, at the same time, the physical keyboard 113 can also control the RFID read-write antenna module 13 to be in a constant on state through the mobile host 12, facilitating continuous scanning and writing, the front end of the seat body 111 is installed with a matrix type illuminating lamp 114, for illuminating during scanning in the deep part of the shelf.

[0051] The handle 14 comprises a handle 141 and a button switch 142 installed on the outer surface of the handle 141, the top of the handle 141 is fixedly welded with a mounting plate 144, the mounting plate 144 is fixedly installed on the lower surface of the seat body 111 through bolts, the bottom end of the handle 141 is provided with a battery module 143, a connecting positioning piece 145 is installed between the handle 141 and the battery module 143, the button switch 142 is three groups in total, which are all spring switches, and are automatically disconnected when loosened, the three groups of vertically arranged button switches 142 are sequentially the RFID read-write antenna module 13 starting switch, the servo motor 271 clockwise starting switch and the servo motor 271 counterclockwise starting switch from top to bottom.

[0052] The connecting positioning piece 145 comprises a T-shaped connecting pipe 1451 and a bottom plate 1452 fixedly arranged at the bottom end of the T-shaped connecting pipe 1451, the outer surface of the T-shaped connecting pipe 1451 movably sleeves a third spring 1453, the two ends of the top of the bottom plate 1452 are fixedly provided with positioning columns 1454, the top end of the T-shaped connecting pipe 1451 and the third spring 1453 are all arranged in the handle 141, and the positioning columns 1454 are movably inserted into the lower surface of the handle 141.

[0053] Working principle; when the device is used, the RFID read-write antenna module 13 can be used for RFID tag writing or reading respectively;

[0054] As shown in the initial state of the device, Figure 1 At this time, the RFID read-write antenna module 13 is perpendicular to the mobile host 12 and downward, at this time, the RFID read-write antenna module 13 is close to the RFID tag through the handheld handle 141, the index finger presses the topmost group of button switches 142 to start the RFID read-write antenna module 13, and a small amount of RFID tag reading and writing is carried out in a short distance, so that the handheld operation and use are facilitated;

[0055] When a large number of RFID tag writing is needed, by pressing the bottommost group of button switches 142, the servo motor 271 drives the drive lead screw 272 to rotate clockwise, so that the connecting block 1110 moves along the movable groove 118 to the end close to the servo motor 271, so that the first spring 1111 is compressed, at this time the connecting block 1110 extrudes the sliding pusher 273, so that the sliding pusher 273 moves close to the servo motor 271, at this time the second spring 274 is compressed, at this time the two ends of the sliding pusher 273 drive the ends of the two groups of traction steel wires 275 to move, the traction steel wires 275 change the traction direction through the fixed pulley 276, so that the other end of the traction steel wire 275 pulls the connecting part 277 to move forward, the connecting part 277 drives the rack 2710 to slide along the guide rail 278, at this time the rack 2710 is in meshing transmission with the gear 279, so that the gear 279 drives the RFID read-write antenna module 13 to rotate clockwise, so that the RFID read-write antenna module 13 is turned over into the storage station 24, at this time the device presents Figure 2 state, in which state the device as a whole is conveniently stored and carried, and the RFID read-write antenna module 13 is prevented from being damaged;

[0056] In Figure 2 state, pull down the battery module 143, so that the T-shaped connecting pipe 1451 slides downward in the handle 141, so that the third spring 1453 is compressed, and at the same time the bottom plate 1452 drives the two groups of positioning columns 1454 to move out of the handle 141, at this time the battery module 143 is rotated by 180 degrees, then the battery module 143 is released, and under the action of the third spring 1453, the positioning column 1454 is inserted into the handle 141 for positioning, at this time the rear side of the battery module 143 and the rear side of the seat body 111 are in the same plane, at this time the device presents Figure 3 state is placed on the desktop, and then the physical keyboard 113 controls the RFID read-write antenna module 13 to be in the normal open state, at this time a plurality of RFID tags can be placed in front of the RFID read-write antenna module 13 for tag writing;

[0057] And the device in the process of RFID tag reading, through the physical keyboard 113 to mobile host 12 adjustment, so that it open read mode, through handheld handle 141, press the top button switch 142 can carry out label reading, in the reading process, for some placed in the deep shelf goods label, at this moment can through press the middle group button switch 142, make servo motor 271 counterclockwise rotation, to this drive screw rod 272 counterclockwise rotation, at this moment under the action of the first spring 1111 and the second spring 274, connecting block 1110 moves away from servo motor 271 one end, so that rack 2710 slides away from servo motor 271 one end, so that the gear 279 drive RFID read-write antenna module 13 overturn, at this moment RFID read-write antenna module 13 from the storage position 24 overturn moves out;

[0058] When RFID read-write antenna module 13 overturn to perpendicular to the seat body 111, connecting block 1110 and movable groove 118 inner end part abuts, at this moment servo motor 271 continues to rotate, at this moment connecting block 1110 and seat body 111 abuts, make the whole telescopic connecting plate 21 outward ejection, at this moment telescopic connecting plate 21 drive RFID read-write antenna module 13 slide outward, so that the distance between RFID read-write antenna module 13 and handle 141 increases, when the distance increases to the appropriate use distance, loosen the middle button switch 142, at this moment servo motor 271 stops, then through handle 141 handheld, RFID read-write antenna module 13 stretches into the shelf interior, then press the first group button switch 142, start RFID read-write antenna module 13, so as to facilitate the reading of goods label in the deep shelf, on the one hand avoid RFID read-write antenna module 13 read-write range too large to cause misreading other shelf layer goods label, on the other hand also facilitate the reading of goods label in the deep shelf.

[0059] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An RFID reading and writing device, comprising a handheld RFID reader (1), wherein the handheld RFID reader (1) comprises a device base (11) and a mobile host (12) fixedly mounted on the device base (11), wherein an RFID reading and writing antenna module (13) and a handle (14) are respectively installed on the bottom two sides of the device base (11); Its features are, A connection mechanism (2) is provided between the RFID read / write antenna module (13) and the device base (11), and the connection mechanism (2) includes: The telescopic connecting plate (21) is movably inserted into the bottom of the equipment base (11) at one end, and the RFID reading and writing antenna module (13) is rotatably connected to the middle of the other end of the telescopic connecting plate (21). A multi-drive unit (27) is disposed inside the telescopic connecting plate (21). The multi-drive unit (27) includes a drive screw (272), a sliding pusher (273), a gear (279), and a rack (2710). The drive screw (272) is rotatably connected inside the telescopic connecting plate (21) and threadedly connected to the device base (11). The sliding pusher (273) is slidably connected to the outer surface of the drive screw (272). The gear (279) is fixedly disposed on both sides of the top of the RFID read / write antenna module (13). The rack (2710) meshes with the gear (279). One side of the sliding pusher (273) abuts against the device base (11), and the other side of the sliding pusher (273) is connected to the rack (2710) in a transmission manner.

2. The RFID reader / writer device according to claim 1, characterized in that: The device base (11) includes a base body (111) and a storage groove (115) opened at the top of the front end of the base body (111). The telescopic connecting plate (21) is movably inserted into the storage groove (115). The top of the storage groove (115) is provided with a movable groove (118). A connecting block (1110) is slidably arranged inside the movable groove (118). A limiting groove (22) is opened at the top of the telescopic connecting plate (21). The connecting block (1110) is slidably connected in the limiting groove (22). The drive screw (272) is threadedly connected inside the connecting block (1110), and the connecting block (1110) abuts against the sliding pusher (273).

3. The RFID reader / writer device according to claim 2, characterized in that: A fixed shaft (119) is fixedly installed inside the movable groove (118). A first spring (1111) is movably sleeved on the outer surface of the outward end of the fixed shaft (119). The connecting block (1110) is movably sleeved on the outer surface of the inward end of the fixed shaft (119). A rotating support (25) is integrally formed at the front end of the telescopic connecting plate (21). A servo motor (271) is fixedly installed on the inner top of the rotating support (25). The output end of the servo motor (271) is fixedly connected to the drive screw (272). A second spring (274) is movably sleeved on the outer surface of the drive screw (272) near the servo motor (271).

4. An RFID reader / writer device according to claim 3, characterized in that: The RFID read / write antenna module (13) is rotatably connected to the bottom of the rotating support (25). The gear (279) is rotatably connected to the inside of the rotating support (25). A connecting part (277) is fixedly provided on the top of the rack (2710). A guide rail (278) is fixedly connected inside the rotating support (25). The connecting part (277) is slidably connected to the outer surface of the guide rail (278). A traction cable (275) is fixedly connected between the sliding pusher (273) and the rack (2710). A fixed pulley (276) is fixedly installed inside the rotating support (25). The traction cable (275) passes through the fixed pulley (276) to change the traction direction.

5. An RFID reader / writer device according to claim 2, characterized in that: The inner walls of the storage slot (115) are integrally formed with positioning strips (116) on both sides. The telescopic connecting plate (21) is provided with positioning grooves (26) on both sides. The positioning strips (116) are movably inserted into the positioning grooves (26). The top sides of the telescopic connecting plate (21) are provided with anti-detachment grooves (23). The inner top of the storage slot (115) is fixedly provided with an anti-detachment suspension block (117). The anti-detachment suspension block (117) is slidably connected in the anti-detachment groove (23).

6. An RFID reader / writer device according to claim 1, characterized in that: The lower surface of the telescopic connecting plate (21) is integrally formed with a storage station (24), and the RFID read / write antenna module (13) flips into the storage station (24) for storage.

7. An RFID reader / writer device according to claim 2, characterized in that: The end of the base (111) is provided with a charging port (112), and a physical keyboard (113) is fixedly provided on the upper surface of the base (111). The charging port (112) and the physical keyboard (113) are both electrically connected to the mobile host (12). A matrix lighting lamp (114) is installed at the front end of the base (111).

8. An RFID reader / writer device according to claim 2, characterized in that: The handle (14) includes a grip (141) and a button switch (142) mounted on the outer surface of the grip (141). A mounting plate (144) is fixedly welded to the top of the grip (141). The mounting plate (144) is fixedly mounted on the lower surface of the base (111) by bolts. A battery module (143) is provided at the bottom of the grip (141). A connecting positioning component (145) is installed between the grip (141) and the battery module (143).

9. An RFID reader / writer device according to claim 8, characterized in that: The connecting positioning component (145) includes a T-shaped connecting tube (1451) and a base plate (1452) fixedly disposed at the bottom end of the T-shaped connecting tube (1451). A third spring (1453) is movably sleeved on the outer surface of the T-shaped connecting tube (1451). Positioning posts (1454) are fixedly disposed at the top of both ends of the base plate (1452). The top end of the T-shaped connecting tube (1451) and the third spring (1453) are both placed inside the grip (141). The positioning posts (1454) are movably inserted into the lower surface of the grip (141).

10. A reading and writing method for an RFID reader / writer according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Handheld reading and writing: The RFID reading and writing antenna module (13) is perpendicular to the base (111). By holding the handle (141) and pressing the first set of button switches (142), the RFID reading and writing antenna module (13) is activated to perform handheld reading and writing of RFID tags. S2. Desktop writing: Adjust the RFID read / write antenna module (13) to the normally open state, rotate the battery module (143) so that the back of the battery module (143) and the back of the base (111) are on the same plane, place the device on the desktop, and write multiple RFID tags one by one through the front of the RFID read / write antenna module (13). S3. Long-distance reading: Press the second set of button switches (142) to make the telescopic connecting plate (21) drive the RFID reading and writing antenna module (13) to slide outward, and adjust the distance between the RFID reading and writing antenna module (13) and the handle (141); S4. To store and carry, press the third set of button switches (142) to retract the telescopic connecting plate (212) to the bottom of the seat (111), and then the RFID reading and writing antenna module (13) automatically flips into the storage station (24) for storage and protection during carrying.

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