Goods automatic warehouse-out detection device based on RFID tag

Abstract

The utility model discloses an RFID tag-based goods automatic ex-warehouse detection device, which is characterized in that a direction adjusting mechanism is arranged at the front section of a goods conveyor, a spare frame is arranged across the middle and rear sections of the goods conveyor, and a light supplementing lamp group, a code scanner group, an RFID reader-writer and a camera group are sequentially arranged on the two side walls of the equipment frame from a feeding end to a discharging end. The light supplementing lamp set, the code scanner set and the camera set are vertically arranged, the lifting driving part is arranged at the middle section of the equipment frame and located under the cargo conveyor, a lifting carrying plate is arranged at the top of the lifting driving part, a lifting window allowing the lifting carrying plate to freely ascend and descend is arranged on the cargo conveyor, and a dust removal mechanism is arranged at the feeding end of the equipment frame. The dust removal mechanism is arranged on the cargo conveyor in a striding mode. According to the utility model, the actual information of the tray and the goods can be automatically and accurately obtained, the goods of which the actual goods information is inconsistent with the target goods information are prevented from being delivered, the accuracy and traceability of the delivered goods are ensured, and the delivery and goods transportation accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic management of fertilizer storage, and particularly relates to a goods automatic outbound detection device based on RFID tags. Background Art

[0002] In most enterprises, the logistics warehousing management method has become a major bottleneck in development. Optimizing the warehousing management system of an enterprise can not only improve work efficiency, but also be an important part of the enterprise's development. At present, the existing warehousing management systems at home and abroad mainly rely on barcodes, RFID tags, visual recognition, and manual operations for warehousing management. This process usually includes pasting codes or labels on goods, and then reading the goods information through manual scanning or visual recognition at each link to judge the inbound and outbound status of the goods.

[0003] However, when these traditional detection methods are used in working environments with poor environmental conditions such as workshops, in large warehousing places such as fertilizers, problems with detection accuracy will occur, resulting in large errors. Especially when dealing with stacked goods, the method of single scanning and individual recognition is still used, which is not only inefficient but also requires a large amount of manual operations. Therefore, problems such as misreading, missing reading, repeated reading, and judgment errors frequently occur, directly affecting the accuracy of goods entry and exit statistics. Content of the Utility Model

[0004] The utility model aims to provide a goods automatic outbound detection device based on RFID tags.

[0005] The utility model is realized through the following technical solutions: it includes a goods conveyor, the goods conveyor is a roller conveyor, a direction adjustment mechanism is arranged at the front section of the goods conveyor, and a code scanning and detection device is arranged at the middle and rear sections of the goods conveyor. The code scanning and detection device includes an equipment frame, a code scanner group, a supplementary light lamp group, an RFID reader / writer, a camera group, a lifting driving part, a lifting carrier plate, and a dust removal mechanism. The equipment frame straddles the goods conveyor. On both side walls of the equipment frame straddle, a supplementary light lamp group, a code scanner group, an RFID reader / writer, and a camera group are sequentially arranged from the feeding end to the discharging end, and the supplementary light lamp group, the code scanner group, and the camera group are arranged vertically. The lifting driving part is arranged at the middle section of the equipment frame and is directly below the goods conveyor. A lifting carrier plate is arranged at the top of the lifting driving part, and a lifting window for the free lifting of the lifting carrier plate is arranged on the goods conveyor. A dust removal mechanism is arranged at the feeding end of the equipment frame, and the dust removal mechanism straddles the goods conveyor.

[0006] The beneficial effects of the utility model are as follows: it can automatically identify and scan the RFID tags and RFID tag cards on the pallet and the goods, and weigh the total weight of the goods on the pallet at the same time. The combination of a scanner group, an RFID reader and a camera group is adopted to make the scanning more complete, improve the fault tolerance rate, accurately obtain the actual goods information of the goods unit, and when the actual goods information is inconsistent with the target goods information, suspend the instruction of the handling mechanism to ship the goods unit out of the warehouse. By automatically identifying whether the actual goods information is consistent with the target goods information, the goods units whose actual goods information is inconsistent with the target goods information can be screened out, thereby avoiding the shipment of goods whose actual goods information is inconsistent with the target goods information, ensuring the accuracy and traceability of the shipped goods, and improving the accuracy of shipping and goods transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the structure of the utility model;

[0008] Figure 2 It is a left-side structural schematic diagram of the steering mechanism;

[0009] Figure 3 It is a schematic diagram of the top view of the adjustment mechanism;

[0010] Figure 4 It is a left view structural schematic diagram of the dust removal mechanism;

[0011] Numbers in the figure: 1~cargo conveyor (1), 2~barcode scanning detection device (2), 3~equipment frame (3), 4~barcode scanning device assembly (4), 5~fill light assembly (5), 6~RFID reader (6), 7~camera assembly (7), 8~lifting drive member (8), 9~lifting carrier plate (9), 10~small floor scale (10), 11~dust removal mechanism (11), 12~outer protective cover (12), 13~inner protective cover (13), 14~sprinkler (14), 15~air exhaust port (15), 16~ Compressor fan (16), 17 exhaust fan (17), 18 end cover plate (18), 19 adjustment mechanism (19), 20 adjustment frame (20), 21 hollow rotating platform (21), 22 suspension column (22), 23 guide rail (23), 24 cantilever (24), 25 adjustment arm claw (25), 26 screw rod (26), 27 motor (27), 28 mounting plate (28), 29 position detection sensor (29), 30 calibration camera (30). DETAILED DESCRIPTION

[0012] In order to enable those skilled in the art to better understand the technical solution of the utility model, its specific implementation method is described in detail below with reference to the accompanying drawings.

[0013] like Figures 1 to 4The automatic outbound detection device for goods based on RFID tags shown in the figure includes a goods conveyor (1). The goods conveyor (1) is a roller conveyor. A direction adjustment mechanism (19) is provided at the front section of the goods conveyor (1), and a code scanning and detection device (2) is provided at the middle and rear sections of the goods conveyor (1). The code scanning and detection device (2) includes an equipment frame (3), a code scanner group (4), a supplementary light group (5), an RFID reader / writer (6), a camera group (7), a lifting drive member (8), a lifting carrier plate (9), and a dust removal mechanism (11). The equipment frame (3) straddles the goods conveyor (1). On the two side walls of the equipment frame (3) that straddle, the supplementary light group (5), the code scanner group (4), the RFID reader / writer (6), and the camera group (7) are sequentially arranged from the feeding end to the discharging end. The supplementary light group (5), the code scanner group (4), and the camera group (7) are vertically arranged. The lifting drive member (8) is arranged at the middle section of the equipment frame (3) and is directly below the goods conveyor (1). A lifting carrier plate (9) is arranged at the top of the lifting drive member (8). A lifting window for the free lifting of the lifting carrier plate (9) is arranged on the goods conveyor (1). A dust removal mechanism (11) is arranged at the feeding end of the equipment frame (3). The dust removal mechanism (11) straddles the goods conveyor (1).

[0014] The supplementary light group (5) is an LED lamp tube, or the supplementary light group (5) is composed of at least two LED lights arranged vertically, which solves the problem that the code scanner group (4) and the camera group (7) cannot take clear pictures or cannot take pictures due to insufficient light.

[0015] The code scanner group (4) includes at least two scanners, and the scanners are vertically arranged. The specific number of scanners is set according to the maximum stacking layers of the goods, so that each stacking layer corresponds to a scanner, ensuring full and complete code scanning and avoiding missed scanning. The camera group (7) includes at least two cameras, and the cameras are vertically arranged. The specific number of cameras is set according to the maximum stacking layers of the goods, so that each stacking layer corresponds to a camera, ensuring full and complete shooting and avoiding missed shooting.

[0016] The described dust removal mechanism (11) includes an outer protective cover (12), an inner protective cover (13), a spray head (14), a compressed air blower (16), an exhaust fan (17), and end cover plates (18). Both the outer protective cover (12) and the inner protective cover (13) are arranged in a "C" - shaped structure. The outer protective cover (12) and the inner protective cover (13) are arranged in a sandwich structure and are hermetically connected at the front and rear end faces by partition plates. The spray heads (14) are arranged in the upper middle parts of the two side walls of the inner protective cover (13). Each spray head (14) is connected to the compressed air blower (16) through a pipe network. At least two air suction openings (15) are respectively arranged at the lower parts of the two side walls of the inner protective cover (13). Each air suction opening (15) is connected to the exhaust fan (17) through a pipe network. The layout of the spray heads (14) and the air suction openings (15) on the inner protective cover (13) can refer to the structure of a laminar flow booth. Sealing partition plates are respectively arranged at the lower parts of the front and rear end faces of the inner protective cover (13), and end cover plates (18) that can be opened or closed are respectively arranged at the upper parts. The space between the top of the sealing partition plate and the lower end of the end cover plate (18) is a passage for the goods conveyor (1) to pass through.

[0017] The described end cover plate (18) is an electric rolling shutter door.

[0018] The described orientation adjustment mechanism (19) includes an orientation adjustment frame (20), a hollow rotating platform (21), suspension columns (22), guide rails (23), cantilever arms (24), a lifting drive member (8), orientation adjustment arm claws (25), lead screws (26), and a motor (27). The hollow rotating platform (21) is suspended on the top of the orientation adjustment frame (20) through several suspension columns (22). Two guide rails (23) are symmetrically arranged on the lower surface of the hollow rotating platform (21). Two cantilever arms (24) are symmetrically arranged on the guide rails (23) through sliders. The guide rails (23) and the cantilever arms (24) are arranged in a cross - shaped structure. Lifting drive members (8) are respectively arranged at both ends of each cantilever arm (24). The lower end of the lifting drive member (8) is provided with an orientation adjustment arm claw (25). Two lead screws (26) parallel to the guide rails (23) are arranged on the lower surface of the hollow rotating platform (21), and one lead screw (26) is connected to one cantilever arm (24) through a lead screw (26) nut. A motor (27) is arranged at any one end of each lead screw (26) to drive the two cantilever arms (24) to move on the guide rails (23).

[0019] The described orientation adjustment arm claw (25) is arranged in an L - shaped structure. The length of the horizontal arm at the lower end of the orientation adjustment arm claw (25), that is, the length of the hook part, is less than the distance between the two roller paths of the goods conveyor (1), so as to ensure that the orientation adjustment arm claw (25) can pass through the gap between the two roller paths without interference when descending.

[0020] An installation carrier plate (28) is arranged on the lower surface of the described hollow rotating platform (21), and the guide rails (23) are arranged on the lower surface of the installation carrier plate (28).

[0021] The lifting drive member (8) is a hydraulic cylinder or a pneumatic cylinder, and a calibration camera (30) is provided at the feeding end of the alignment mechanism (19).

[0022] A small weighing scale (10) is provided on the top of the lifting carrier plate (9), or a small weighing scale (10) is provided between the lifting drive member (8) and the lifting carrier plate (9), and the goods are weighed by the small weighing scale (10).

[0023] Furthermore, position detection sensors (29) are respectively provided on the goods conveyor (1) directly below the code scanning and detection device (2) and the alignment mechanism (19). The position detection sensors (29) are used to detect the position of the pallet, so as to facilitate the accurate stop of the goods conveyor (1), ensure that the code scanning and detection device (2) and the alignment mechanism (19) can normally operate on the pallet and the goods, avoid the situation of inaccurate position alignment, and ensure that subsequent operations are free of faults.

[0024] Furthermore, a control device is further included. The control device is electrically connected to the goods conveyor (1), the code scanning and detection device (2), and the alignment mechanism (19). The control device is an industrial computer, which is equipped with a display screen and a keyboard. A management system software supporting this device is built in the industrial computer to control and realize the functions of automatic transportation, code scanning, data analysis, and warning of this device.

[0025] Furthermore, to ensure the reliability of the operation of this device, a secondary control device is further configured. The secondary control device is a PLC programmable logic controller. This device is electrically connected to the secondary control device, and then the secondary control device is electrically connected to the control device. The operation can be realized through the secondary control device, and the control device plays the role of a server.

[0026] The working mode of the present utility model: The pallet stacked with goods is taken off the shelf by a forklift or other handling equipment and placed on the goods conveyor (1); it should be noted that the goods on the pallet must be stacked in an orderly manner, the RFID tags of each good are all facing outward, and there is no occlusion; the goods conveyor (1) transports the pallet and the goods to the feeding end of the alignment mechanism (19), and the calibration camera (30) provided at this station takes pictures of the goods, and the background personnel or an automated control system checks whether the RFID tags on the goods are captured in the pictures taken.

[0027] If the RFID tag is not captured, the alignment mechanism (19) needs to be started to adjust the direction of the pallet to ensure that the RFID tag on the goods can be scanned or captured when it is at the station of the code scanning and detection device (2); if the RFID tag is captured, there is no need to start the alignment mechanism (19) to adjust the direction of the pallet, but directly transport the pallet to the code scanning and detection device (2); the specific method for the alignment mechanism (19) to adjust the direction of the pallet is as follows:

[0028] Before the conveying tray, the lifting drive member (8) controls the lowering of the alignment arm claw (25). The lower end of the alignment arm claw (25) passes under the roller path of the goods conveyor (1) and closely adheres to the edge position of the goods conveyor (1). When the tray runs directly below the alignment mechanism (19), it is detected by the position detection sensor (29) at this location, and the goods conveyor (1) stops. Each motor (27) drives each cantilever (24) to move closer to the tray through the lead screw (26) and finally contacts the tray. At this time, the lifting drive member (8) is started to control the alignment arm claw (25) to rise, so that the lower part of the alignment arm claw (25) supports the bottom of the tray. Subsequently, the alignment arm claw (25) is controlled to continue rising to lift the tray from the goods conveyor (1). Then, the hollow rotating platform (21) is started to rotate 90 degrees or 180 degrees, so that the RFID tag on the goods faces the side of the barcode scanner group (4). Finally, the lifting drive member (8) controls the alignment arm claw (25) to lower and unload the tray on the goods conveyor (1), and each motor (27) drives each cantilever (24) to move away from the tray in the reverse direction. The goods conveyor (1) then continues to operate to convey the tray and the goods to the barcode scanning and detection device (2).

[0029] When the tray runs below the dust removal mechanism (11), that is, when it is in the inner shield (13) of the dust removal mechanism (11), it is detected by the position detection sensor (29) at this location, and the goods conveyor (1) stops. The end covers (18) at the front and rear ends of the dust removal mechanism (11) lower, so that the inner shield (13) and the end covers (18) form a closed space. The compression blower (16) blows air through the nozzles (14) to remove dust from the tray and the goods, blowing the dust on the tray and the goods off, and the dust is sucked out by the exhaust fan (17) through the air extraction port (15), thus solving the problem that the RFID tag on the goods cannot be scanned due to dust occlusion. After the dust removal is completed, the end covers (18) rise, and the goods conveyor (1) conveys the tray and the goods to the equipment frame (3) of the barcode scanning and detection device (2) for barcode scanning and detection. By removing dust from the goods by the dust removal mechanism (11) before barcode scanning and detection, the phenomenon of incorrect identification or non-identification of data caused by dust factors in the workshop and warehouse can be avoided, and continuous detection is realized, improving the detection efficiency.

[0030] When the tray runs below the equipment frame (3) and is directly above the lifting carrier plate (9), it is detected by the position detection sensor (29) at this location. The goods conveyor (1) stops operating, and the lifting drive (8) jacks up the lifting carrier plate (9). The lifting carrier plate (9) then supports the tray, and the small weighing scale (10) weighs the goods on the tray to facilitate grasping the weight information of the goods leaving the warehouse and comparing it with the information at the time of warehousing to ensure consistency of the information before and after. When a difference is found, it is convenient to detect and troubleshoot in a timely manner. After weighing is completed, the lifting drive (8) descends to unload the tray onto the goods conveyor (1), and the goods conveyor (1) continues to convey.

[0031] During the conveying process of the above-mentioned tray from entering the equipment frame (3) to leaving, the barcode scanner groups (4) on both sides of the equipment frame (3) first scan the RFID tags on the goods that enter first one by one. When scanning of the first half of the goods is completed, the tray is directly above the lifting carrier plate (9), and at this time, the weighing operation is carried out. During this process, the RFID reader / writer (6) reads and writes the RFID tag card on the tray. After weighing is completed, the tray moves with the goods conveyor (1), and finally, the camera group (7) takes pictures of the RFID tags on the goods one by one until it is conveyed out of the barcode detection device (2). During the above process, when any of the barcode scanner groups (4), RFID reader / writer (6), and camera group (7) has a barcode scanning error, a warning can be issued to prompt the management staff to troubleshoot the situation in a timely manner to avoid the occurrence of errors in the goods leaving the warehouse.

[0032] During the conveying process of the above-mentioned tray from entering the equipment frame (3) to leaving, through the cooperation of the barcode scanner groups (4) and the camera group (7), each RFID tag can be fully scanned, and the RFID tag information can be uploaded to the background data management center for analysis by the system to achieve double verification, avoiding missed scanning and incorrect scanning, and ensuring the accuracy of the information obtained by scanning. On the other hand, through the shooting of the camera group (7), it is possible to timely learn about the situation where the RFID tag is blocked or damaged, so as to perform decontamination or replacement processing in a timely manner. When an RFID tag card is set on the goods, there is no need to start the barcode scanner groups (4) for scanning. Instead, it is directly read and written by the RFID reader / writer (6), and then photographed by the camera group (7) to timely learn about whether the RFID tag card is damaged, so as to facilitate replacement.

Claims

1. An automatic outbound detection device for goods based on RFID tags, comprising a goods conveyor (1), a steering mechanism (19) is arranged at the front section of the goods conveyor (1), and a code scanning detection device (2) is arranged at the middle and rear sections of the goods conveyor (1), characterized in that: The described code scanning detection device (2) includes a device frame (3), a code scanner group (4), a supplementary light lamp group (5), an RFID reader / writer (6), a camera group (7), a lifting drive member (8), a lifting carrier plate (9), and a dust removal mechanism (11). The device frame (3) straddles the goods conveyor (1). On the two side walls of the device frame (3) where it straddles, the supplementary light lamp group (5), the code scanner group (4), the RFID reader / writer (6), and the camera group (7) are sequentially arranged from the feeding end to the discharging end. Moreover, the supplementary light lamp group (5), the code scanner group (4), and the camera group (7) are vertically arranged. The lifting drive member (8) is arranged at the middle section of the device frame (3) and is directly below the goods conveyor (1). A lifting carrier plate (9) is arranged at the top of the lifting drive member (8). A lifting window for the free lifting of the lifting carrier plate (9) is arranged on the goods conveyor (1). A dust removal mechanism (11) is arranged at the feeding end of the device frame (3), and the dust removal mechanism (11) straddles the goods conveyor (1).

2. The goods automatic outbound detection device based on RFID tags according to claim 1, wherein: The described supplementary light lamp group (5) is an LED lamp tube, or the supplementary light lamp group (5) is composed of at least two LED lamps vertically arranged.

3. The automatic goods outbound detection device based on RFID tags according to claim 1, characterized in that: The described code scanner group (4) includes at least two scanners, and the scanners are vertically arranged; the described camera group (7) includes at least two cameras, and the cameras are vertically arranged.

4. The automatic goods outbound detection device based on RFID tags according to claim 1, characterized in that: The described dust removal mechanism (11) includes an outer protective cover (12), an inner protective cover (13), a nozzle (14), a compressed air blower (16), an exhaust fan (17), and end covers (18). Both the outer protective cover (12) and the inner protective cover (13) are arranged in a "C" - shaped structure. The outer protective cover (12) and the inner protective cover (13) are arranged in a sandwich structure and are hermetically connected at the front and rear end faces by partition plates. The nozzles (14) are arranged in the upper middle parts of the two side walls of the inner protective cover (13). Each nozzle (14) is connected to the compressed air blower (16) through a pipe network. At least two air suction openings (15) are respectively arranged at the lower parts of the two side walls of the inner protective cover (13). Each air suction opening (15) is connected to the exhaust fan (17) through a pipe network. Sealing partition plates are respectively arranged at the lower parts of the front and rear end faces of the inner protective cover (13), and end covers (18) that can be opened or closed to seal the end faces are respectively arranged at the upper parts. Moreover, the space between the top of the sealing partition plate and the lower end of the end cover (18) is a passage for the goods conveyor (1) to pass through.

5. The automatic goods outbound detection device based on RFID tags according to claim 4, characterized in that: The described end cover (18) is an electric rolling shutter door.

6. The automatic goods outbound detection device based on RFID tags according to claim 1, characterized in that: The described orientation mechanism (19) includes an orientation frame (20), a hollow rotating platform (21), a suspension column (22), guide rails (23), a cantilever (24), a lifting drive member (8), orientation arm claws (25), a lead screw (26), and a motor (27). The hollow rotating platform (21) is suspended on the top of the orientation frame (20) through a number of suspension columns (22). Two guide rails (23) are symmetrically arranged on the lower surface of the hollow rotating platform (21). Two cantilevers (24) are symmetrically arranged on the guide rails (23) through sliders. The guide rails (23) and the cantilevers (24) are arranged in a cross-shaped structure. Lifting drive members (8) are respectively arranged at both ends of each cantilever (24). The lower ends of the lifting drive members (8) are provided with orientation arm claws (25). Two lead screws (26) parallel to the guide rails (23) are arranged on the lower surface of the hollow rotating platform (21), and one lead screw (26) is correspondingly connected to one cantilever (24) through a lead screw (26) nut. A motor (27) is arranged at any one end of each lead screw (26) to drive the two cantilevers (24) to move on the guide rails (23).

7. The automatic goods outbound detection device based on RFID tags according to claim 6, characterized in that: The described orientation arm claws (25) are arranged in an L-shaped structure, and its width is less than the distance between the two roller paths of the goods conveyor (1).

8. The automatic goods outbound detection device based on RFID tags according to claim 6, characterized in that: An installation carrier plate (28) is arranged on the lower surface of the described hollow rotating platform (21), and the guide rails (23) are arranged on the lower surface of the installation carrier plate (28).

9. The automatic goods outbound detection device based on RFID tags according to claim 1 or 6, characterized in that: The described lifting drive member (8) is a hydraulic cylinder or a pneumatic cylinder, and a calibration camera (30) is provided at the feeding end of the orientation mechanism (19).

10. The goods automatic outbound detection device based on RFID tags according to claim 1, characterized in that: A small weighbridge (10) is arranged on the top of the described lifting carrier plate (9), or a small weighbridge (10) is arranged between the lifting drive member (8) and the lifting carrier plate (9).

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