Adjustable RFID tag identification device based on dual-mode identification system

Abstract

The utility model discloses an adjustable RFID tag identification device based on a dual-mode identification system, which comprises a base body shell, one side of the base body shell is provided with a fan-shaped surface which is expanded upwards, the fan-shaped surface is provided with an arc-shaped opening which extends along the bending direction of the fan-shaped surface, and a sliding base which is adjusted to move along the extending direction of the arc-shaped opening is arranged in the arc-shaped opening. An ultrasonic ranging module is installed on the outer side of the sliding base, a rotating base is arranged on the right side of the base shell, and an RFID read-write module pointing to the arc-shaped opening is arranged on the inner side of the rotating base. According to the adjustable RFID tag identification device, the ultrasonic ranging module and the RFID read-write module are combined, so that dual-mode cooperative work of RFID and ultrasonic waves is realized, and the identification requirements of RFID tags at different heights and angles are met.

Description

Technical Field

[0001] This utility model relates to the field of Internet of Things (IoT) device technology, specifically to an adjustable RFID tag identification device based on a dual-mode identification system. Background Technology

[0002] An RFID tag identification device is a device that uses radio waves for non-contact automatic identification. It communicates with RFID tags (also known as electronic tags or smart tags) via radio waves to automatically identify objects and collect data. RFID technology is widely used in logistics, retail, manufacturing, healthcare, transportation, and many other fields to track and manage goods, people, and assets.

[0003] Traditional RFID identification devices are mostly fixed installations, making it difficult to adapt to tag positions at different heights or angles. Especially in dynamic scenarios such as forklifts and conveyor belts, blind spots are prone to occur, resulting in a high rate of missed detections.

[0004] For example, CN205246901U discloses a production line inspection station for an RFID identification device, which includes multiple inspection positions arranged in a straight line or array. Each inspection position includes: a base plate on which the object to be inspected is placed; and two oppositely arranged side plates fixedly installed on opposite sides of the base plate. The side plates are made of iron plates, and at least one magnet is fixedly installed on one of the side plates.

[0005] The production line testing station for RFID identification devices has multiple testing positions equipped with testing antennas, which are equivalent to RFID read / write modules. Their positions are fixed, and they also suffer from the aforementioned problems. Utility Model Content

[0006] The purpose of this invention is to provide an adjustable RFID tag identification device based on a dual-mode identification system. By combining an ultrasonic ranging module and an RFID reading and writing module, it enables RFID and ultrasonic dual-mode collaborative operation to meet the RFID tag identification needs at different heights and angles.

[0007] To achieve the above objectives, this utility model provides an adjustable RFID tag identification device based on a dual-mode identification system. The adjustable RFID tag identification device includes a base shell, one side of which is provided with an upwardly unfolding fan-shaped surface. An arc-shaped opening extending along its curvature direction is provided on the fan-shaped surface. A sliding base that can be adjusted and moved along its extension direction is installed inside the arc-shaped opening. An ultrasonic ranging module is installed on the outside of the sliding base. A rotating base is provided on the right side of the base shell, and an RFID read / write module pointing towards the arc-shaped opening is provided on the inside of the rotating base.

[0008] Preferably, a stop block is provided on the side of the rotating base, and a stop post is provided on the left and right sides of the stop block on the inner side of the base shell.

[0009] Preferably, a drive gear is installed on the inner side of the base shell, a transmission chain is sleeved on the drive gear, and the sliding base is installed on the transmission chain.

[0010] Preferably, the left and right sides of the arc-shaped opening are provided with sliding grooves for the transmission chain to slide, and guide posts are fixedly connected to both ends of the arc-shaped opening.

[0011] Preferably, the drive gear is connected to a first drive unit via a shaft; the first drive unit is a first knob or a first servo motor.

[0012] Preferably, a display screen is provided on the side of the arc-shaped opening on the fan-shaped surface, and a circuit board electrically connecting the display screen, the ultrasonic ranging module and the RFID reading and writing module is installed inside the base shell.

[0013] Preferably, the outer end of the rotating base is connected to a second drive unit; the second drive unit is a second knob or a second servo motor.

[0014] According to the above technical solution, this utility model provides an adjustable RFID tag identification device based on a dual-mode identification system. The adjustable RFID tag identification device includes a base shell, one side of which is provided with an upwardly unfolding fan-shaped surface. An arc-shaped opening extending along its curvature direction is provided on the fan-shaped surface. A sliding base that can be adjusted and moved along its extension direction is installed inside the arc-shaped opening. An ultrasonic ranging module is installed on the outside of the sliding base. A rotating base is provided on the right side of the base shell, and an RFID reading and writing module pointing towards the arc-shaped opening is provided on the inside of the rotating base.

[0015] This adjustable RFID tag identification device has the following advantages:

[0016] 1. By setting a sliding base inside the arc-shaped opening of the fan-shaped surface, the sliding base can move along the arc-shaped opening, that is, along the fan-shaped surface, so that the detection wave emitted by the ultrasonic ranging module can adjust the emission angle, that is, it can detect objects at different angles and heights.

[0017] 2. The RFID reader / writer module can rotate with the rotating base, adaptively adjusting the orientation of the RFID reader / writer module. This makes the identification of RFID tags on the object being detected more accurate, improves the identification effect, and reduces the error rate.

[0018] 3. By combining the ultrasonic ranging module and the RFID reading and writing module, the dual-mode RFID and ultrasonic technologies can work together to meet the RFID tag identification needs at different heights and angles.

[0019] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of an application scenario for an adjustable RFID tag identification device;

[0022] Figure 2 This is a diagram showing the relationships between the modules in an adjustable RFID tag identification device.

[0023] Figure 3 This is a flowchart of the operation of an adjustable RFID tag identification device;

[0024] Figure 4 This is a schematic diagram of an adjustable RFID tag identification device;

[0025] Figure 5 This is a schematic diagram of the internal structure of an adjustable RFID tag identification device;

[0026] Figure 6 yes Figure 5 A top-view structural diagram;

[0027] Figure 7 This is a schematic diagram showing the connection between the transmission chain belt and the drive gear;

[0028] Figure 8 This is a schematic diagram showing the connection between the RFID reader / writer module and the circuit board;

[0029] Figure 9 This is a schematic diagram of the outer side of the sector;

[0030] Figure 10 This is a side view of the adjustable RFID tag identification device;

[0031] Figure 11 This is a schematic diagram of the structure at the arc-shaped opening in the sector;

[0032] Figure 12 This is a circuit diagram of an adjustable RFID tag identification device.

[0033] Explanation of reference numerals in the attached figures

[0034] 1-Suspended basket; 1a-Fully loaded suspended basket; 1b-Empty suspended basket; 2-Suspended transmission chain; 3-Adjustable RFID tag identification device; 4-RFID tag; 5-Camera; 6-Workbench; 7-Sliding base; 8-First wiring harness; 9-Transmission chain; 10-RFID read / write module; 11-Guide column; 12-Base shell; 13-Second wiring harness; 14-Circuit board; 15-Drive gear; 16-Stop column; 17-Rotating base; 18-Stop block; 19-Display screen; 20-First knob or first servo motor; 21-Second knob or second servo motor; 22-Ultrasonic ranging module; 23-Arc-shaped opening; 24-Slide groove; 25-Third wiring harness. Detailed Implementation

[0035] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0036] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0037] See Figure 1-12 The adjustable RFID tag identification device based on a dual-mode identification system shown includes a base shell 12. One side of the base shell 12 is provided with an upwardly unfolding fan-shaped surface. An arc-shaped opening 23 extending along its curvature direction is provided on the fan-shaped surface. A sliding base 7 that can be adjusted and moved along its extension direction is installed inside the arc-shaped opening 23. An ultrasonic ranging module 22 is installed on the outside of the sliding base 7. A rotating base 17 is provided on the right side of the base shell 12. An RFID read / write module 10 pointing towards the arc-shaped opening 23 is provided on the inside of the rotating base 17.

[0038] By implementing the above technical solution, a sliding base 7 is set inside the arc-shaped opening 23 of the fan-shaped surface, allowing the sliding base 7 to move along the arc-shaped opening 23, that is, along the fan-shaped surface. This enables the detection wave emitted by the ultrasonic ranging module 22 to adjust its emission angle, thus allowing detection of objects at different angles and heights. The RFID reading and writing module 10 can rotate with the rotating base 17, adaptively adjusting its orientation. This makes the identification of the RFID tag 4 on the object more accurate, improving the identification effect and reducing the error rate. By combining the ultrasonic ranging module 22 and the RFID reading and writing module 10, dual-mode RFID and ultrasonic work can be achieved, meeting the identification needs of RFID tags 4 at different heights and angles.

[0039] In this embodiment, a stop 18 is provided on the side of the rotating base 17, and a stop post 16 is respectively provided on the left and right sides of the stop 18 on the inner side of the base shell 12. The stop is a rigid cylinder arranged circumferentially around the rotating base 17. The included angle between the two stop posts 16 is set according to the angle range that the RFID read / write module 10 needs to swing, which limits the rotation range of the rotating base 17 and ensures that the RFID identification direction is always within the effective range. For example, the RFID read / write module 10 always points to the sector surface.

[0040] In this embodiment, a drive gear 15 is installed on the inner side of the base shell 12, and a transmission chain belt 9 is sleeved on the drive gear 15. The sliding base 7 is installed on the transmission chain belt 9. The sliding base 7 is fixedly installed on the transmission chain belt 9 by multiple bolts. The inner side of the transmission chain belt 9 is surrounded by serrations that mesh with the drive gear 15. The rotation of the drive gear 15 drives the transmission chain belt 9 to rotate, thereby causing the sliding base 7 to move.

[0041] In this embodiment, the left and right sides of the arc-shaped opening 23 are provided with sliding grooves 24 for the transmission chain belt 9 to slide, and guide posts 11 are fixedly connected to both ends of the arc-shaped opening 23. See also Figure 11 As shown, the two ends of the slide groove 24 are designed to open inwards for the transmission chain belt 9 to pass through. The transmission chain belt 9 slides and is embedded in the slide groove 24 on both sides within the arc-shaped opening 23, and is limited in front and behind, improving the stability of the sliding base 7. The two ends extend out through the openings at both ends of the slide groove 24 and are engaged with the drive gear 15. The guide posts 11 provided at both ends serve as limiters and are in tangential contact with the transmission chain belt 9 to prevent the transmission chain belt 9 from slipping out of the slide groove 24 during rotation. Of course, the guide posts 11 can be smooth posts or movable posts with movable sleeves on the outside.

[0042] In this embodiment, the drive gear 15 is connected to a first drive unit via a shaft; the first drive unit is a first knob or a first servo motor 20.

[0043] The shaft and the base shell 12 are connected by bearings. The first drive unit drives the drive gear 15 to rotate, which in turn drives the transmission chain belt 9 to rotate.

[0044] In this embodiment, a display screen 19 is disposed on the side of the arc-shaped opening 23 on the fan-shaped surface, and a circuit board 14 electrically connecting the display screen 19, the ultrasonic ranging module 22, and the RFID read / write module 10 is installed inside the base shell 12. See also Figure 6As shown, the display screen 19 is connected to the circuit board 14 via the first wiring harness 8, the RFID reading and writing module 10 is connected to the circuit board 14 via the second wiring harness 13, and the ultrasonic ranging module 22 is connected to the circuit board 14 via the third wiring harness 25. The display screen 19 is used to display various data to the workers.

[0045] In this embodiment, a second drive unit is connected to the outer end of the rotating base 17; the second drive unit is a second knob or a second servo motor 21. The outer end of the rotating base 17 is provided with a shaft that is rotatably connected to the base shell 12, and the shaft end is connected to a second knob or a second servo motor 21, used to drive the rotating base 17 to swing the RFID read / write module 10 by an angle.

[0046] In this invention, when manual drive is selected (i.e., when the first knob and the second knob are selected), the first and second drive units should use self-locking gears with a tooth pitch between 1 and 3 mm to increase adjustment accuracy. Anti-slip textures can also be provided on the surface of the transmission chain belt 9.

[0047] The ultrasonic ranging module 22 in this invention preferentially adopts a dual-probe ultrasonic module to improve detection accuracy and precision. Through the detection of the ultrasonic ranging module 22, the position of the detected object is determined, accurately triggering the RFID read / write timing. For example, when the target enters the preset ultrasonic range, the RFID read / write module 10 is triggered to read the tag data, achieving dual-mode collaborative identification. The RFID read / write module 10 includes an RFID reader and an RFID antenna connected to it, with the RFID antenna pointing towards the RFID tag 4.

[0048] See Figure 1-4 Taking the suspended conveyor chain 2 conveying the suspended basket 1 as an example, this utility model will be specifically described. Multiple baskets 1 are suspended at intervals on the suspended conveyor chain 2 and move with the movement of the suspended conveyor chain 2. RFID tags 4 are affixed to the bottom of the baskets 1. The baskets 1 include fully loaded baskets 1a and empty baskets 1b. The suspended conveyor chain 2 is arranged in a ring, with a working area in the middle. A workbench 6 is set in the working area. The adjustable RFID tag identification device 3 of this utility model is set on one side of the workbench 6 and is fixed to the side of the workbench 6 by an aluminum alloy fixing bracket, so that the ultrasonic ranging module 22 and the RFID reading and writing module 10 are pointing at the basket 1. Several cameras 5 are also arranged in this area for each unloading point.

[0049] During operation, the host computer binds the RFID tag 4 to the suspended platform 1, sets the ultrasonic trigger distance and RFID read / write parameters, and the OLED display 19 initializes to display the "standby" state. When the suspended platform 1 enters the preset ultrasonic distance, the ultrasonic module sends a trigger signal to the microcontroller. The microcontroller starts the RFID read / write module 10 to read the tag data, and at the same time, the camera 5 captures an image of the suspended platform 1. The data is uploaded to the host computer via the network communication module. After verifying the status of the suspended platform 1 through a visual algorithm, the database is updated and the status of "identified" or "abnormal" is displayed on the OLED.

[0050] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0052] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. An adjustable RFID tag identification device based on a dual-mode identification system, characterized in that, The adjustable RFID tag identification device (3) includes a base shell (12). One side of the base shell (12) is provided with an upwardly unfolding fan-shaped surface. An arc-shaped opening (23) extending along its curvature direction is provided on the fan-shaped surface. A sliding base (7) that can be adjusted and moved along its extension direction is installed inside the arc-shaped opening (23). An ultrasonic ranging module (22) is installed on the outside of the sliding base (7). A rotating base (17) is provided on the right side of the base shell (12). An RFID reading and writing module (10) pointing towards the arc-shaped opening (23) is provided on the inside of the rotating base (17).

2. The adjustable RFID tag identification device based on a dual-mode identification system according to claim 1, characterized in that, The rotating base (17) is provided with a stop block (18) on its side, and a stop post (16) is provided on the left and right sides of the stop block (18) on the inner side of the base shell (12).

3. The adjustable RFID tag identification device based on a dual-mode identification system according to claim 1, characterized in that, A drive gear (15) is installed on the inner side of the base shell (12); The drive gear (15) is fitted with a transmission chain (9), and the sliding base (7) is mounted on the transmission chain (9).

4. The adjustable RFID tag identification device based on a dual-mode identification system according to claim 3, characterized in that, The left and right sides of the arc-shaped opening (23) are provided with sliding grooves (24) for the transmission chain belt (9) to slide, and guide posts (11) are fixed at both ends of the arc-shaped opening (23).

5. The adjustable RFID tag identification device based on a dual-mode identification system according to claim 3, characterized in that, The drive gear (15) is connected to the first drive unit via a shaft; The first drive unit is a first knob or a first servo motor (20).

6. The adjustable RFID tag identification device based on a dual-mode identification system according to claim 1, characterized in that, A display screen (19) is provided on the side of the arc-shaped opening (23) on the fan-shaped surface, and a circuit board (14) electrically connecting the display screen (19), the ultrasonic ranging module (22) and the RFID reading and writing module (10) is installed inside the base shell (12).

7. The adjustable RFID tag identification device based on a dual-mode identification system according to claim 1, characterized in that, The outer end of the rotating base (17) is connected to a second driving unit; The second drive unit is a second knob or a second servo motor (21).

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