An aerial warehouse intelligent inventory method and device based on far-field array and near-field fusion

Abstract

This invention discloses a method and apparatus for intelligent inventory counting in aviation warehousing using a fusion of far-field array and near-field methods. The method first collects the RSSI signals of the RFID tags on the goods on each shelf of the bottom shelf. Then, it collects the RSSI signals of the RFID tags on the goods on each shelf upwards. During the collection at each shelf, different power levels are used to cover different shelves, and duplicate signals are removed by comparing them with already confirmed RSSI signals, thereby enabling inventory counting of the goods on each shelf of all shelves. By collecting the RSSI tags of the goods placed on the first shelf of each shelf one by one in conjunction with a power antenna, the inventory counting of the shelves is completed quickly, accurately, and automatically.

Description

Technical Field

[0001] This invention relates to intelligent inventory management in warehouses, and in particular to an intelligent inventory management method and apparatus for aviation warehouses that integrates far-field arrays and near-field arrays. Background Technology

[0002] In airline or airport maintenance warehouses, there are often highly concentrated multi-row, multi-level high-bay racks (e.g., 3 rows × 5 layers, with storage location naming conventions A1..A3 (first layer), B1..B3 (second layer), ..., E1..E3 (fifth layer)). Routine inventory checks of these high-bay racks require the rapid and accurate confirmation of the correspondence between goods and storage locations, and the ability to complete the inventory checks efficiently without disassembling goods or large-scale loading / unloading.

[0003] Common practices include: manual visual inspection layer by layer, close-range grid-by-grid scanning, or using a single-power far-field wireless reader to scan all tags from the ground upwards. Some solutions use unmanned inspection robots for close-range discovery and reading layer by layer, but blind spots still exist when the structure is complex or severely obstructed. Existing methods often have shortcomings in terms of uncontrollable reading areas leading to cross-layer misreading, obstruction affecting recognition, and the difficulty in achieving both efficiency and accuracy. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a method and apparatus for intelligent inventory management in aviation warehousing that integrates far-field arrays and near-field data.

[0005] This invention provides the following technical solution: an intelligent inventory method for aviation warehousing based on far-field array and near-field fusion, comprising m parallel shelves numbered 1 to n from bottom to top, each shelf holding several items on each layer, each item being equipped with an RFID tag, and power antennas for collecting RSSI signals installed on layers 2 to n of the first shelf. The method includes the following steps: S1. Collect the RSSI tags of the goods placed on the first shelf of each shelf one by one to form a set of RSSI tags of the goods on the first shelf of each shelf, and create a total set of goods S. Add the set of RSSI tags of the goods on the first shelf to the total set of goods S. S2. Power antennas with m different power levels cover the 1st to mth shelves on the second layer, thereby collecting RSSI signal sets. By comparing the RSSI signal set collected from the second layer of the first shelf with the total goods set S, the signal set from the second layer of the first shelf is obtained and added to the total goods set S. By comparing the RSSI signal set collected from the second shelf and the second layer of the second shelf with the total goods set S, the signal set from the second shelf and the second layer of the second shelf is obtained and added to the total goods set S. Repeat the above operation, and compare the RSSI signal sets collected from the second layer of the 3rd to mth shelves covered by the power antenna with the total set of goods S to remove duplicates, so as to obtain the RSSI tag set of goods on the second layer of each shelf; S3. Repeat step S2 for layers 3 to n to obtain the RSSI tag set for each item on each shelf.

[0006] Furthermore, the shelf has a height of h, a width of w, and a depth of d. The shelf panels are composed of a conductive shielding layer and a wave-absorbing layer. The power antenna is installed at the top center of the leftmost or rightmost side of each shelf.

[0007] Furthermore, the power antenna is flat, with a metal backplate, and the transmitted waveform is fan-shaped.

[0008] Furthermore, the clockwise angle between the plane of the back plate of the power antenna and the side plane of the shelf is α.

[0009] A smart inventory management device for aviation warehousing based on far-field array and near-field fusion includes m parallel shelves numbered 1 to n from bottom to top, each shelf holding several items on each layer, each item being tagged with an RFID tag; and further includes: The first data acquisition module is used to collect the RSSI tags of the goods placed on the first shelf of each shelf one by one, form the RSSI tag set of the goods on the first shelf of each shelf, and create a total set of goods S, and add the RSSI tag set of the goods on the first shelf to the total set of goods S. The second acquisition module is used to cover the first to m shelves of the second layer with m different power levels to acquire RSSI signal sets; compare the RSSI signal set acquired covering the first shelf with the total goods set S to obtain the signal set of the second layer of the first shelf, and add it to the total goods set S; compare the RSSI signal set acquired covering the second shelf with the total goods set S to obtain the signal set of the second layer of the second shelf, and add it to the total goods set S; repeat the above operation, and compare the RSSI signal sets acquired covering the third to m shelves with the total goods set S to remove duplicates, to obtain the RSSI tag set of the goods on the second layer of each shelf; The third acquisition module is used to repeat step S2 on the 3rd to nth layers to obtain the RSSI tag set of goods on each shelf and each layer.

[0010] An electronic device, comprising: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors perform the methods described above.

[0011] A computer-readable storage medium having computer instructions stored thereon, which, when executed by a processor, implement the steps of the method described above.

[0012] The beneficial effects of this invention are as follows: By collecting RSSI tags of goods placed on the first shelf of each shelf one by one, combined with a power antenna, the inventory of the shelves can be completed quickly, accurately, and automatically. Attached Figure Description

[0013] Figure 1 This is a flowchart of the method of the present invention; Figure 2 This is a perspective view of the shelf according to Embodiment 1 of the present invention; Figure 3 This is a plan view of the shelf according to Embodiment 1 of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of part A; Figure 5 This is a schematic diagram of the module of the device of the present invention. Detailed Implementation

[0014] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0015] This invention automatically collects data step by step using RSSI tags of goods placed on the first shelf of each shelf, combined with a power antenna, enabling rapid, accurate, and automated inventory checks.

[0016] The embodiments of the present invention will be further described below with reference to several examples.

[0017] Example 1 like Figures 1-4 A smart inventory method for aviation warehousing based on far-field array and near-field fusion includes m parallel shelves numbered 1 to n from bottom to top. Each shelf has several items on each layer, and each item is equipped with an RFID tag. The second to nth layers of the first shelf are equipped with power antennas for collecting RSSI signals. The method includes the following steps: S1. Collect the RSSI tags of the goods placed on the first shelf of each shelf one by one to form a set of RSSI tags of the goods on the first shelf of each shelf, and create a total set of goods S. Add the set of RSSI tags of the goods on the first shelf to the total set of goods S. S2. Power antennas with m different power levels cover the 1st to mth shelves on the second layer, thereby collecting RSSI signal sets. By comparing the RSSI signal set collected from the second layer of the first shelf with the total goods set S, the signal set from the second layer of the first shelf is obtained and added to the total goods set S. By comparing the RSSI signal set collected from the second shelf and the second layer of the second shelf with the total goods set S, the signal set from the second shelf and the second layer of the second shelf is obtained and added to the total goods set S. Repeat the above operation, and compare the RSSI signal sets collected from the second layer of the 3rd to mth shelves covered by the power antenna with the total set of goods S to remove duplicates, so as to obtain the RSSI tag set of goods on the second layer of each shelf; S3. Repeat step S2 for layers 3 to n to obtain the RSSI tag set for each item on each shelf.

[0018] A smart inventory method for aviation warehousing based on far-field array and near-field fusion includes three side-by-side shelves numbered 1 to 5 from bottom to top. Each shelf has several items on each level, and each item is tagged with an RFID tag. Power antennas for collecting RSSI signals are installed on the 2nd to 5th levels of the first shelf. The method includes the following steps: S1. By collecting the RSSI tags of the goods placed on the first shelf of each shelf one by one, an RSSI tag set X11~X13 of the goods on the first shelf of each shelf is formed, and the RSSI tag set X1=[X11,X12,X13] of the goods on the first shelf is created, and the total set of goods S is created. The RSSI tag set of the goods on the first shelf is added to the total set of goods S. S2. By using three different power levels to cover the second layer of the first to third shelves with the second layer power antenna, RSSI signals are collected to form the signal sets Y21 to Y23 of the power antenna; By comparing Y21 with the total set of goods S, duplicates are removed, and the signal set X21 of the second layer of the first shelf is obtained and added to the total set of goods S. Compare Y22 with the total set of goods S to remove duplicates, obtain the signal set X22 of the second shelf and the second layer, and add it to the total set of goods S; Compare Y23 with the total set of goods S to remove duplicates, obtain the signal set X23 of the second layer of the third shelf, and add it to the total set of goods S; The RSSI tag set for the second layer of goods is X2 = [X21, X22, X23]; S3. Repeat step S2 for shelves 3 through 5 to obtain the RSSI tag set X for each item on each shelf: .

[0019] The shelf has a height of h, a width of w, and a depth of d. The shelf panels are composed of a conductive shielding layer and a wave-absorbing layer. The power antenna is installed at the top center of the leftmost or rightmost side of each shelf.

[0020] The power antenna is flat, with a metal backplate, and transmits a fan-shaped waveform.

[0021] The clockwise angle between the plane of the back plate of the power antenna and the plane of the side of the shelf is α.

[0022] The shelf has a height of h, a width of w, and a depth of d. The shelf panels are composed of a conductive shielding layer and a wave-absorbing layer. The power antenna is installed at the top center of the leftmost or rightmost side of each shelf.

[0023] The power antenna is flat, with a metal backplate, and transmits a fan-shaped waveform.

[0024] The clockwise angle between the plane of the backplate of the power antenna and the plane of the side of the shelf is α.

[0025] In this embodiment, a single shelf is 1 meter high, 2 meters wide, and 0.8 meters deep, with an antenna size of 0.6m x 0.6m. The shelf panels employ a composite structure with a conductive shielding layer and an absorbing layer. The conductive shielding layer reflects RF energy, while the absorbing layer attenuates residual waves, resulting in a single-layer reflection coefficient of ≤−10 dB. This creates at least 3 dB of signal isolation between the upper and lower layers, preventing false triggering of the upper layer.

[0026] Antenna installation location: Each antenna is installed close to the bottom plate of the upper shelf, at the top left center of the leftmost shelf, with its back facing outwards and the transmitting side facing the goods. Viewed from the back of the antenna, the antenna is equidistant from the two pillars (since the container is 0.8 meters deep and the antenna is 0.6 meters wide, the distance between the antenna and the shelf opening and the back of the shelf is 0.1 meters). The bottom of the antenna is fixed to the side of the shelf (fixed 0.6 meters from the top down, meaning the distance between the bottom of the antenna and the bottom plate of the shelf on that level is 0.4 meters). The antenna is rotated around its bottom edge to change the included angle α.

[0027] Antenna structure: flat panel, with a metal backplate, and transmits a fan-shaped waveform.

[0028] Tilt angle: The clockwise angle between the plane of the back plate of the power antenna and the side plane of the shelf is α. When scanning near, medium and far (2 meters, 4 meters, 6 meters) distances, the near distance is about 26.6°, the medium distance is about 14°, and the far distance is about 9.5°.

[0029] Transmit power: The 12dbi antenna has power outputs of 17W, 22W, and 33W when scanning near, medium, and far distances (2m, 4m, and 6m), respectively.

[0030] Example 2 Example 2 like Figure 5 A smart inventory management device for aviation warehousing based on far-field array and near-field fusion includes m parallel shelves numbered 1 to n from bottom to top, each shelf holding several items on each layer, each item being tagged with an RFID tag; and further includes: The first acquisition module 1 is used to collect the RSSI tags of the goods placed on the first layer of each shelf one by one, form the RSSI tag set of the goods on the first layer of each shelf, and create a total goods set S, and add the RSSI tag set of the goods on the first layer to the total goods set S. The second acquisition module 2 is used to cover the first to m shelves of the second layer with m different power levels, thereby acquiring RSSI signal sets; compare the RSSI signal set acquired covering the first shelf with the total goods set S to obtain the signal set of the second layer of the first shelf, and add it to the total goods set S; compare the RSSI signal set acquired covering the second layer of the second shelf with the total goods set S to obtain the signal set of the second layer of the second shelf, and add it to the total goods set S; repeat the above operation, and compare the RSSI signal sets acquired covering the second layer of the third to m shelves with the total goods set S in turn to remove duplicates, thereby obtaining the RSSI tag set of the goods on the second layer of each shelf; The third acquisition module 3 is used to repeat step S2 on the 3rd to nth layers to obtain the RSSI tag set of goods on each shelf and each layer.

[0031] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0032] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this application according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0033] Accordingly, this application also provides an electronic device, including: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors perform the methods described above.

[0034] Accordingly, this application also provides a computer-readable storage medium having computer instructions stored thereon, which, when executed by a processor, implement the steps of any of the above methods.

[0035] In the embodiments provided in this application, it should be understood that the disclosed methods and systems can also be implemented in other ways. The method and system embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods and systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0036] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0037] On the other hand, a computer-readable storage medium stores computer instructions thereon, which, when executed by a processor, implement the steps of the above-described method. When the computer program is executed by the processor, it implements the method as described in any of the first aspects above. If the function is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An aerial warehouse inventory intelligence method based on far-field array and near-fusion, characterized in that, The method comprises m side-by-side shelves numbered 1 to n from bottom to top, each shelf holding several items on each shelf, each item being tagged with an RFID tag, and power antennas for collecting RSSI signals installed on shelves 2 to n of the first shelf. The method includes the following steps: S1. Collect the RSSI tags of the goods placed on the first shelf of each shelf one by one to form a set of RSSI tags of the goods on the first shelf of each shelf, and create a total set of goods S. Add the set of RSSI tags of the goods on the first shelf to the total set of goods S. S2. Power antennas with m different power levels cover the 1st to mth shelves on the second layer, thereby collecting RSSI signal sets. By comparing the RSSI signal set collected from the second layer of the first shelf with the total goods set S, the signal set from the second layer of the first shelf is obtained and added to the total goods set S. By comparing the RSSI signal set collected from the second shelf and the second layer of the second shelf with the total goods set S, the signal set from the second shelf and the second layer of the second shelf is obtained and added to the total goods set S. Repeat the above operation, and compare the RSSI signal sets collected from the second layer of the 3rd to mth shelves covered by the power antenna with the total set of goods S to remove duplicates, so as to obtain the RSSI tag set of goods on the second layer of each shelf; S3. Repeat step S2 for the 3rd to nth layers to obtain the RSSI tag set for each item on each shelf. The shelf is 1 meter high, 2 meters wide, and 0.8 meters deep. The shelf panels are composed of a conductive shielding layer and a wave-absorbing layer. The power antenna is installed at the top center of the leftmost or rightmost side of each shelf. The power antenna is flat, measuring 0.6m × 0.6m, with a metal backplate. It transmits a fan-shaped waveform with a power of 12dbi. The power antenna is 0.1m away from both the shelf opening and the back of the shelf. The bottom of the power antenna is fixed to the side of the shelf 0.6m from the top down. The angle between the plane of the back plate of the power antenna and the clockwise plane of the side of the shelf is α. When scanning a distance of 2 meters, α is 26.6° and the power is 17 watts; when scanning a distance of 4 meters, α is 14° and the power is 22 watts; when scanning a distance of 6 meters, α is 9.5° and the power is 33 watts.

2. An aerial warehousing intelligent inventory device based on far-field array and near fusion, characterized in that, It includes m side-by-side shelves numbered 1 to n from bottom to top, each shelf holding several items on each level, each item being tagged with an RFID tag; it also includes: The first data acquisition module is used to collect the RSSI tags of the goods placed on the first shelf of each shelf one by one, form the RSSI tag set of the goods on the first shelf of each shelf, and create a total set of goods S, and add the RSSI tag set of the goods on the first shelf to the total set of goods S. The second acquisition module is used to cover the first to m shelves of the second layer with m different power antennas to collect RSSI signal sets; compare the RSSI signal set collected covering the first shelf with the total goods set S to obtain the signal set of the second layer of the first shelf, and add it to the total goods set S; compare the RSSI signal set collected covering the second shelf with the total goods set S to obtain the signal set of the second layer of the second shelf, and add it to the total goods set S; repeat the above operation to compare the RSSI signal sets collected covering the third to m shelves with the total goods set S to remove duplicates, and obtain the RSSI tag set of the goods on the second layer of each shelf; The third acquisition module is used to repeat step S2 on the 3rd to nth layers to obtain the RSSI tag set of goods on each shelf and each layer. The shelf is 1 meter high, 2 meters wide, and 0.8 meters deep. The shelf panels are composed of a conductive shielding layer and a wave-absorbing layer. The power antenna is installed at the top center of the leftmost or rightmost side of each shelf. The power antenna is flat, measuring 0.6m × 0.6m, with a metal backplate. It transmits a fan-shaped waveform with a power of 12dbi. The power antenna is 0.1m away from both the shelf opening and the back of the shelf. The bottom of the power antenna is fixed to the side of the shelf 0.6m from the top down. The angle between the plane of the back plate of the power antenna and the clockwise plane of the side of the shelf is α. When scanning a distance of 2 meters, α is 26.6° and the power is 17 watts; when scanning a distance of 4 meters, α is 14° and the power is 22 watts; when scanning a distance of 6 meters, α is 9.5° and the power is 33 watts.

3. An electronic device, comprising: include: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method as described in any one of claims 1.

4. A computer readable storage medium having stored thereon computer instructions, wherein, When executed by the processor, this instruction implements the steps of the method as described in any one of claims 1.

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