Shelf identification method, device, medium and equipment for archive room and unmanned archive room

Abstract

The present disclosure relates to the technical field of archive management, and particularly relates to a file room misplacement identification method and device, a medium, equipment and an unmanned file room. The method is implemented based on ultra-high frequency RFID, wherein: an RFID tag is attached to a corresponding file, an RFID reader is fixed on a grabbing arm device of an unmanned file room, the RFID reader moves with the grabbing arm device, and a multi-degree-of-freedom RFID scanning system is formed. The method comprises: acquiring a real-time signal strength value of an RFID tag corresponding to a file to be positioned, which is collected by the multi-degree-of-freedom RFID scanning system; comparing the real-time signal strength value with reference signal strength values of different regions in a reference field to identify whether the file to be positioned is misplaced; wherein the reference field is a reference signal strength value distribution field obtained based on reference RFID tags at known positions and RFID readers at different positions. The technical scheme of the present disclosure is beneficial to reducing hardware investment costs and reducing maintenance costs of system operation while achieving misplacement identification of the file to be positioned.

Description

Technical Field

[0001] This disclosure relates to the field of archives management technology, and in particular to a method, device, medium, equipment, and unmanned archives storage facility for identifying misplaced items in an archives storage facility. Background Technology

[0002] In archives storage rooms, files may be misplaced or misorganized, a phenomenon known as misplaced files. Misplaced files refer to files not being placed in their designated locations, such as... Figure 1 As shown, the file placed in storage compartment A should be stored in compartment B according to regulations, but it is not placed in the designated storage compartment B. This situation constitutes misplacement of files. Misplacement of files can lead to chaos in file management and even pose risks to the security and confidentiality of the files.

[0003] To address the aforementioned issue of misplaced files, in addition to manual inspection, the relevant technical solution involves equipping each file storage compartment of the mobile shelving unit with a set of Radio Frequency Identification (RFID) tags and an RFID reader. The RFID reader is placed below the storage compartment, and the corresponding RFID tag is affixed to the file. The RFID reader scans the corresponding RFID tag to determine if a file has been misplaced. Because this solution requires equipping each storage compartment of the mobile shelving unit with an RFID tag and an RFID reader, the hardware cost is high, and the maintenance workload is substantial, making it unsuitable for large archive storage facilities. Summary of the Invention

[0004] To solve the above-mentioned technical problems, or at least partially solve them, this disclosure provides a method, apparatus, medium, equipment, and unmanned storage room for identifying misplaced archives in an archive storage room. While realizing the identification of misplaced archives to be located, it helps to reduce hardware investment costs and reduce system operation and maintenance costs.

[0005] In a first aspect, embodiments of this disclosure provide a method for identifying misplaced items in an unmanned archive storage facility. The method is based on ultra-high frequency RFID, where RFID tags are affixed to the corresponding archives, and an RFID reader / writer is fixed to a gripping arm device in the unmanned archive storage facility. The RFID reader / writer moves with the gripping arm device, forming a multi-degree-of-freedom RFID scanning system. The method includes:

[0006] Obtain the real-time signal strength value of the RFID tag corresponding to the file to be located, which is collected by the multi-degree-of-freedom RFID scanning system;

[0007] By comparing the real-time signal strength value with the reference signal strength values ​​of different regions in the reference field, it can be identified whether the file to be located has been misplaced.

[0008] The reference field is a distribution field of reference signal strength values ​​in different areas obtained by using multiple reference RFID tags at known locations and RFID readers at multiple different locations.

[0009] In some embodiments, before comparing the real-time signal strength value with reference signal strength values ​​in different regions of the reference field, the method further includes:

[0010] Obtain the reference field;

[0011] The multiple reference RFID tags at the known locations include pre-placed reference RFID tags and / or RFID tags corresponding to the on-shelf archives in the unmanned archive warehouse in the initial state;

[0012] The known locations corresponding to the plurality of reference RFID tags include at least the top corner and center of the file shelf.

[0013] In some embodiments, obtaining the reference field includes:

[0014] The multi-degree-of-freedom RFID scanning system is moved to multiple different locations to scan each of the reference RFID tags and obtain the signal strength value of each reference RFID tag corresponding to each different location;

[0015] Based on the signal strength values ​​of multiple reference RFID tags at known locations corresponding to different locations, the signal strength values ​​of storage cells without reference RFID tags are determined by interpolation.

[0016] The reference field is constructed based on the signal strength values ​​of multiple reference RFID tags at the known locations corresponding to different locations and the signal strength values ​​of the storage slots where no reference RFID tags are placed corresponding to different locations.

[0017] In some embodiments, obtaining the real-time signal strength value of the RFID tag corresponding to the file to be located, collected by the multi-degree-of-freedom RFID scanning system, includes:

[0018] Control the multi-degree-of-freedom RFID scanning system to traverse the multiple different locations;

[0019] The multi-degree-of-freedom RFID scanning system is used to read the RFID tags corresponding to the files to be located at various locations to obtain the corresponding real-time signal strength values.

[0020] In some embodiments, comparing the real-time signal strength value with reference signal strength values ​​in different regions of the reference field to identify whether the file to be located is misplaced includes:

[0021] Compare the real-time signal strength values ​​corresponding to the multiple different locations with the reference signal strength values;

[0022] For all of the multiple different locations, if the real-time signal strength value is different from the reference signal strength value, it is determined that the file to be located is misplaced.

[0023] In some embodiments, the method further includes:

[0024] After determining that the file to be located is misplaced, for each of the multiple different locations, a matching grid corresponding to the reference signal strength value that is the same as the real-time signal strength value of the RFID tag corresponding to the file to be located is determined;

[0025] The current location of the file to be located is determined by taking the intersection of the positions of all the matching grids.

[0026] Secondly, this disclosure also provides a misplaced archive identification device for an unmanned archive storage facility. The device is based on ultra-high frequency RFID, with RFID tags affixed to the corresponding archives. An RFID reader / writer is fixed to a gripping arm device in the unmanned archive storage facility, and the RFID reader / writer moves with the gripping arm device, forming a multi-degree-of-freedom RFID scanning system. The device includes:

[0027] The data acquisition unit is used to acquire the real-time signal strength value of the RFID tag corresponding to the file to be located, which is collected by the multi-degree-of-freedom RFID scanning system.

[0028] The data processing unit is used to compare the real-time signal strength value with the reference signal strength values ​​of different regions in the reference field, determine the location of the file to be located, and identify whether the file to be located is misplaced.

[0029] The reference field is a distribution field of reference signal strength values ​​in different areas obtained by using multiple reference RFID tags at known locations and RFID readers at multiple different locations.

[0030] Thirdly, embodiments of this disclosure also provide a computer-readable storage medium storing a program or instructions that cause a computer to perform steps of any of the methods provided in the first aspect.

[0031] Fourthly, embodiments of this disclosure also provide an electronic device, including: a processor and a memory;

[0032] The processor executes steps of any of the methods provided in the first aspect by invoking programs or instructions stored in the memory.

[0033] Fifthly, embodiments of this disclosure also provide an unmanned warehouse that uses the steps of any of the methods provided in the first aspect to identify misplaced archives.

[0034] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0035] This disclosure provides a method for identifying misplaced archives in an unmanned archive storage facility. This method is based on UHF RFID, where RFID tags are affixed to the corresponding archives, and RFID readers are fixed to the gripper arm of the unmanned archive storage facility. The RFID reader moves with the gripper arm, forming a multi-degree-of-freedom RFID scanning system. The method includes: acquiring the real-time signal strength value of the RFID tag corresponding to the archive to be located, collected by the multi-degree-of-freedom RFID scanning system; comparing the real-time signal strength value with reference signal strength values ​​in different areas of a reference field to identify whether the archive to be located is misplaced; wherein, the reference field is a distribution field of reference signal strength values ​​in different areas based on multiple reference RFID tags at known locations and collected by RFID readers at multiple different locations. Therefore, based on RFID tag positioning technology, utilizing the freely positionable gripper arm of the unmanned archive storage system and the RFID reader mounted on the gripper arm, the real-time signal strength value of the RFID tag corresponding to the archive to be located, collected by the multi-degree-of-freedom RFID scanning system, is acquired. By comparing the real-time signal strength value of the RFID tag corresponding to the archive to be located with the reference signal strength values ​​in different areas of the reference field, the misplacement of the archive to be located can be identified. The misplacement identification method for unmanned archive storage provided in this embodiment not only identifies misplaced archives but also avoids the need to configure RFID readers for each storage compartment in mobile shelving units, as is done in related technologies, by using only UHF RFID tags and one RFID reader / writer. This helps reduce hardware investment costs and system operation and maintenance costs. Attached Figure Description

[0036] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0037] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A type of mobile shelving unit for storing archives, provided in related technologies;

[0039] Figure 2This is a schematic diagram illustrating an application scenario for identifying misplaced archives in related technologies.

[0040] Figure 3 A flowchart illustrating a method for identifying misplaced items in an unmanned archive storage facility, as provided in this embodiment of the disclosure;

[0041] Figure 4 This is a schematic diagram illustrating an application scenario of a multi-degree-of-freedom RFID scanning system provided in an embodiment of this disclosure;

[0042] Figure 5 This is a schematic diagram illustrating an application scenario of an RFID scanning system scanning shelved files at different locations, as provided in an embodiment of this disclosure.

[0043] Figure 6 This is a schematic diagram of interpolation calculation provided in an embodiment of the present disclosure;

[0044] Figure 7 A schematic diagram illustrating the construction of a reference field provided in an embodiment of this disclosure;

[0045] Figure 8 A schematic diagram of an auxiliary positioning file provided in an embodiment of this disclosure;

[0046] Figure 9 This disclosure provides a schematic diagram illustrating the possible location of a misplaced file based on a reference RSSI feature value.

[0047] Figure 10 A schematic diagram illustrating the intersection of matching grids at multiple scanning positions, provided as an embodiment of this disclosure;

[0048] Figure 11 A schematic diagram of the structure of a mis-shelf identification device for an unmanned archive storage room provided in this embodiment of the present disclosure;

[0049] Figure 12 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this disclosure. Detailed Implementation

[0050] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0051] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0052] Misplaced files refer to files that are not placed in their designated locations, such as... Figure 1 As shown, the storage compartments of the mobile shelving unit are used to place files. For example, if a file is placed in storage compartment A but not in its designated storage compartment B, this is considered misplaced file. Misplaced files can lead to chaos in file management and even pose risks to the security and confidentiality of the files.

[0053] To address the aforementioned technical problems, related technologies equip each file storage compartment of a mobile shelving unit with an RFID tag and an RFID reader / writer. For example, Figure 2 This is a schematic diagram illustrating an application scenario for identifying misplaced archives, as provided in related technologies. For example... Figure 2 As shown, the RFID reader 22 is installed below the storage compartment, and the corresponding RFID tag 21 is affixed to the file. The RFID reader 22 scans the corresponding RFID tag 21 to determine if the file has been misplaced. Since this solution requires equipping each storage compartment of the mobile shelving with an RFID tag 21 and an RFID reader 22, the hardware cost is high, resulting in a large workload for maintenance and security, and it is not suitable for use in large archives.

[0054] In response to the technical problems mentioned in related technologies, this disclosure provides a method for identifying misplaced archives in an unmanned archive warehouse. While realizing the identification of misplaced archives to be located, it avoids the method of configuring an RFID reader for each storage compartment in the mobile shelving unit, which is used only by using an ultra-high frequency RFID tag and an RFID reader, thus reducing hardware investment costs and system operation and maintenance costs.

[0055] The following is in conjunction with the appendix Figure 3-12 The present disclosure provides an exemplary description of the mis-shelf identification method, apparatus, storage medium, electronic equipment, and unmanned archive warehouse provided in the embodiments of this disclosure.

[0056] Figure 3 This is a flowchart illustrating a method for identifying misplaced items in an unmanned archive vault, as provided in this embodiment of the disclosure. This method is applicable to application scenarios requiring misplaced item identification in unmanned archive vaults. This method can be executed by a misplaced item identification device for unmanned archive vaults provided in this embodiment of the disclosure, which can be implemented using software and / or hardware. Figure 3 As shown, the method for identifying misplaced items in an unmanned archive storage facility includes the following steps:

[0057] S301. Obtain the real-time signal strength value of the RFID tag corresponding to the file to be located, which is collected by the multi-degree-of-freedom RFID scanning system.

[0058] Specifically, RFID tags are affixed to each file, and RFID readers are fixed to the gripper arm device in the unmanned file storage room. The RFID readers move with the gripper arm device. Since the gripper arm device can move freely in multiple directions, it constitutes a multi-degree-of-freedom RFID scanning system.

[0059] The RFID tags used are UHF RFID tags, and correspondingly, the RFID readers are also UHF RFID readers. Based on this, the multi-degree-of-freedom RFID scanning system can achieve long-range coverage and detection, enabling the scanning of RFID tags on documents.

[0060] The main principle of RFID is to use radio waves to read, write, and identify a tagging medium. An RFID reader writes data in a specific format into an RFID tag, which is then attached to the surface of the object to be identified. RFID readers can also read and identify the electronic data stored in the tag without contact, thus enabling long-distance, contactless collection and wireless transmission of object identification information.

[0061] For example, Figure 4 This is a schematic diagram illustrating an application scenario of a multi-degree-of-freedom RFID scanning system provided in an embodiment of this disclosure. For example... Figure 4 As shown, all the files on the mobile shelving unit are affixed with RFID tags. The multi-degree-of-freedom RFID scanning system utilizes a gripper arm device that can move freely along the X, Y, and Z axes in the unmanned archive storage system. By integrating the RFID reader / writer 22 onto the gripper arm 23, the RFID tags of the files on the mobile shelving unit can be scanned at any fixed position to collect the real-time signal strength value of the RFID tag corresponding to the file to be located, which can be simply referred to as the RSSI characteristic value.

[0062] Compared to existing technologies, for example Figure 2 As shown in the embodiments of this disclosure, the misplaced shelf identification method for unmanned archive storage rooms adopts a multi-degree-of-freedom RFID scanning system. The RFID scanning system uses ultra-high frequency RFID tags and an RFID reader / writer, which avoids configuring an RFID reader / writer for each storage compartment of the mobile shelving unit. This helps to reduce hardware investment costs and system operation and maintenance costs.

[0063] In some embodiments, obtaining the real-time signal strength value of the RFID tag corresponding to the file to be located, collected by a multi-degree-of-freedom RFID scanning system, includes:

[0064] Control the multi-degree-of-freedom RFID scanning system to traverse multiple different locations;

[0065] A multi-degree-of-freedom RFID scanning system is used to read the RFID tags corresponding to the files to be located at various locations and obtain the corresponding real-time signal strength values.

[0066] Specifically, refer to Figure 4 The movable multi-degree-of-freedom RFID scanning system 20 can be moved to different locations, that is, the multi-degree-of-freedom RFID scanning system 20 can be controlled to traverse multiple different locations, scan the RFID tag corresponding to the file to be located at each location, and read the RSSI feature value of the RFID tag corresponding to the file to be located.

[0067] For example, Figure 5 This diagram illustrates an application scenario where an RFID scanning system, as provided in this embodiment, scans on-shelf files at different locations. Figure 5 As shown, p1, p2, p3, p4, and p5 represent the positions where the RFID scanning system reads RFID tags. The RFID scanning system traverses multiple different positions and reads the RFID tags corresponding to the files to be located at positions p1, p2, p3, p4, and p5 to obtain the RSSI feature value of the RFID tags corresponding to the files to be located. The read RSSI feature value can be recorded as R0(i,j,k). Here, 1≤i≤m, 1≤j≤n, 1≤k≤s, i represents the number of layers in the mobile shelving unit, j represents the position of the storage compartment, and k represents the position where the RFID scanning system reads the RFID tag corresponding to the file to be located. For example, position k could be... Figure 5 At least one of the positions p1, p2, p3, p4 and p5.

[0068] S302. Compare the real-time signal strength value with the reference signal strength values ​​of different areas in the reference field to identify whether the file to be located is misplaced.

[0069] Specifically, this step compares the real-time signal strength value of the RFID tag corresponding to the file to be located, obtained in S301, with the reference signal strength values ​​of different areas in the reference field, and identifies whether the file to be located has been misplaced based on the comparison result.

[0070] The reference field is defined as the distribution of reference signal strength values ​​in different areas, obtained by collecting data from multiple reference RFID tags at known locations using RFID readers at various locations. Therefore, based on these multiple reference RFID tags at known locations and utilizing the one-to-one correspondence between the tags and storage compartments, the archives are scanned at multiple locations using an RFID scanning system to obtain the distribution of reference signal strength values ​​in different areas. The specific method for obtaining this distribution is detailed below.

[0071] This disclosure provides a method for identifying misplaced archives in an unmanned archive storage facility. The method is based on UHF RFID, with RFID tags affixed to the corresponding archives and an RFID reader fixed to a gripper arm device in the unmanned archive storage facility. The RFID reader moves with the gripper arm device, forming a multi-degree-of-freedom RFID scanning system. The method includes: acquiring the real-time signal strength value of the RFID tag corresponding to the archive to be located, collected by the multi-degree-of-freedom RFID scanning system; comparing the real-time signal strength value with reference signal strength values ​​in different areas of a reference field to identify whether the archive to be located is misplaced; wherein, the reference field is a distribution field of reference signal strength values ​​in different areas based on multiple reference RFID tags at known locations and collected by RFID readers at multiple different locations. Therefore, based on RFID tag positioning technology, utilizing the freely positionable gripper arm of the unmanned archive storage system and the RFID reader mounted on the gripper arm, the real-time signal strength value of the RFID tag corresponding to the archive to be located, collected by the multi-degree-of-freedom RFID scanning system, is acquired. By comparing the real-time signal strength value of the RFID tag corresponding to the archive to be located with the reference signal strength values ​​in different areas of the reference field, the misplacement of the archive to be located can be identified. The misplacement identification method for unmanned archive storage provided in this embodiment not only identifies misplaced archives but also avoids the need to configure RFID readers for each storage compartment in mobile shelving units, as is done in related technologies, by using only UHF RFID tags and one RFID reader / writer. This helps reduce hardware investment costs and system operation and maintenance costs.

[0072] In some embodiments, before comparing the real-time signal strength value with reference signal strength values ​​in different regions of the reference field, the method further includes:

[0073] Obtain the reference field.

[0074] Specifically, as mentioned above, before comparing the real-time signal strength value with the reference signal strength values ​​of different areas in the reference field, the reference field must be obtained first. After obtaining the reference field, the real-time signal strength value can be compared with the reference signal strength values ​​of different areas in the reference field to identify whether the file to be located has been misplaced.

[0075] The multiple reference RFID tags at known locations may include pre-placed reference RFID tags; they may also include RFID tags corresponding to the archives on the shelves in the unmanned archive storage room in the initialization state, which can ensure that the archives are all in the correct placement position; they may also include pre-placed reference RFID tags and RFID tags corresponding to the archives on the shelves in the unmanned archive storage room in the initialization state; this disclosure does not specifically limit this.

[0076] It should be noted that, to ensure high accuracy of the reference field, the known locations corresponding to multiple reference RFID tags must include at least the top corner and center of the filing cabinet. If the files in place after initialization already cover the top corner and center of the filing cabinet, no further reference tags need to be placed; if the files in place after initialization do not completely cover the top corner and center of the filing cabinet, additional reference tags are added manually to ensure high accuracy of the reference field.

[0077] In some embodiments, obtaining the reference field includes:

[0078] The mobile multi-degree-of-freedom RFID scanning system is moved to multiple different locations to scan each reference RFID tag and obtain the signal strength value of each reference RFID tag corresponding to each different location;

[0079] Based on the signal strength values ​​of multiple reference RFID tags at known locations corresponding to different locations, the signal strength values ​​of storage cells without reference RFID tags are determined by interpolation.

[0080] A reference field is constructed based on the signal strength values ​​of multiple reference RFID tags at known locations corresponding to different locations, and the signal strength values ​​of storage slots without reference RFID tags corresponding to different locations.

[0081] Specifically, refer to Figure 4 The mobile RFID scanning system moves to different locations, scans each reference RFID tag, and reads the signal strength value of each reference RFID tag corresponding to each different location. To distinguish it from the RSSI characteristic value of the RFID tag corresponding to the file to be located mentioned above, the obtained signal strength value of each reference RFID tag corresponding to each different location is simply referred to as the reference RSSI characteristic value.

[0082] Typically, the four corners and the center point of the mobile shelving unit can be used as scanning locations to fully record the reference RSSI characteristic values ​​of each reference RFID tag in multiple scanning directions. Different scanning locations can be used as follows: Figure 5 The numbers and records are displayed as shown, with p1, p2, p3, p4, and p5 representing the locations where the RFID scanning system reads the reference RFID tags.

[0083] For a mobile shelving unit with m layers and n storage compartments per layer, after being scanned by an RFID scanning system at s locations, the reference RSSI characteristic value of each storage compartment can be recorded as R(i,j,k). Here, 1≤i≤m, 1≤j≤n, 1≤k≤s, i represents the layer number of the mobile shelving unit, j represents the location of the storage compartment, and k represents the location where the RFID scanning system reads the reference RFID tag. For example, position k could be... Figure 5 At least one of the positions p1, p2, p3, p4 and p5.

[0084] Continue to refer to Figure 4 The mobile RFID scanning system is moved to different locations to scan the shelving files with affixed reference RFID tags, thereby obtaining the reference RSSI characteristic value of the corresponding storage compartment. Based on the scanned reference RSSI characteristic value of the storage compartment, the reference RSSI characteristic value of the storage compartment without reference RFID tags is determined by Newton's interpolation method. Specifically, the reference RSSI characteristic value of each storage compartment without a reference RFID tag is determined by the reference RSSI characteristic value of its adjacent compartment with affixed reference RFID tags on the same layer.

[0085] For example, Figure 6 This is a schematic diagram of an interpolation calculation provided in an embodiment of this disclosure. Figure 6 As shown, the storage cell position x t and x t+1 The storage compartment j, which is on the same layer as the one without a reference RFID tag, and the storage compartment x... t and x t+1 Let j be the location of the adjacent storage cell with the attached reference RFID tag. The reference RSSI characteristic value for storage cell j at position k can be calculated using the following formula:

[0086]

[0087] Therefore, based on the signal strength values ​​of multiple reference RFID tags at known locations corresponding to different locations, and the signal strength values ​​of storage compartments without reference RFID tags corresponding to different locations, a reference RSSI characteristic value for each storage compartment in the mobile shelving unit can be constructed, and a baseline map of the reference RSSI characteristic value can be obtained, i.e., a reference field can be constructed.

[0088] For example, Figure 7 This is a schematic diagram illustrating the construction of a reference field according to an embodiment of this disclosure. Figure 7As shown, the positions of the reference RFID tag and RFID reader are fixed, thus a reference RSSI characteristic value baseline map of the reference RFID tag's location can be plotted within the spatial area. For areas not covered by the reference RFID tag, the reference RSSI characteristic values ​​of these spatial locations can be calculated and confirmed using interpolation based on the reference RSSI characteristic values ​​of the RFID tag's location and the spatial propagation characteristics of RFID signals. Figure 7 As shown, the spatial region is divided into several grids. The reference RSSI characteristic values ​​of grids containing reference RFID tags can be directly determined. For areas in a grid without reference RFID tags, the RSSI characteristic values ​​can be obtained through interpolation calculations using the reference RSSI characteristic values ​​of adjacent areas containing reference tags. Using this method, a baseline map of the reference RSSI characteristic values ​​for different regions in space can be drawn, thus constructing a reference field.

[0089] In other embodiments, multiple UHF RFID readers can be set for multiple scanning locations. By setting a limited number of UHF RFID readers, related technologies such as... Figure 2 The central design equips each storage compartment of the mobile shelving unit with a reader / writer, which simplifies the hardware structure and helps reduce costs.

[0090] It should be noted that, to ensure the baseline map covers the entire mobile shelving unit, if the currently stored files on the shelving unit do not cover both ends of each shelf, auxiliary positioning files with RFID tags need to be temporarily placed in the corresponding storage compartments. For example, such as... Figure 8 As shown, Figure 8 This is a schematic diagram of an auxiliary positioning file provided in an embodiment of the present disclosure.

[0091] In some embodiments, comparing real-time signal strength values ​​with reference signal strength values ​​in different regions of the reference field to identify whether the file to be located is misplaced includes:

[0092] Compare the real-time signal strength values ​​at multiple different locations with the reference signal strength values;

[0093] For all locations across multiple different locations, if the real-time signal strength value is different from the reference signal strength value, it is determined that the file to be located is misplaced.

[0094] Specifically, as described above, the mobile RFID scanning system scans the RSSI feature values ​​of the RFID tags corresponding to the files to be located at multiple different locations. The read RSSI feature values ​​can be recorded as R0(i,j,k). Based on the baseline map of the reference RSSI feature values ​​in the reference field, the reference RSSI feature values ​​of the files to be located are obtained at multiple different locations. The obtained reference RSSI feature values ​​can be recorded as R(i,j,k). Thus, at the same location, for example... Figure 5 As shown, p1 can obtain R0(i,j,p1) and R(i,j,p1) of the file to be located, and compare whether R0(i,j,p1) and R(i,j,p1) are the same; accordingly, at other locations, the obtained R0(i,j,k) and R(i,j,k) of the file to be located are compared to see if they are the same; when the obtained R0(i,j,k) and R(i,j,k) of the file to be located are different for all locations in multiple different locations, it can be determined that the file to be located is misplaced.

[0095] By determining whether the RSSI feature value R0(i,j,k) read at each scanning position is the same as the reference RSSI feature value R(i,j,k), interference from random factors can be avoided, which helps to improve the accuracy of the determination.

[0096] In some embodiments, the method further includes:

[0097] After determining that the file to be located is misplaced, for each of the multiple different locations, a matching grid corresponding to the reference signal strength value that is the same as the real-time signal strength value of the RFID tag corresponding to the file to be located is determined;

[0098] The current location of the file to be located is determined by taking the intersection of the positions of all matching cells.

[0099] Specifically, once it is determined that the file to be located is misplaced, the RSSI characteristic value of the file is scanned at each scanning position. After determining the RSSI characteristic value of the file to be located, a reference RSSI characteristic value that matches the RSSI characteristic value of the file to be located is obtained through the reference RSSI characteristic value baseline map in the reference field. The corresponding storage cell is then determined based on the reference RSSI characteristic value. For a high-frequency RFID reader with a fixed scanning position, the RSSI values ​​of RFID tags corresponding to different storage cells may be the same, so there may be more than one storage cell that matches the RSSI characteristic value.

[0100] For example, Figure 9 This disclosure provides a schematic diagram illustrating how to determine the possible location of a misplaced file based on reference RSSI feature values. Figure 5 and Figure 7 Based on, combined Figure 9 , Figure 9 The example shows that the scan position is p1, and there are three locations where the file to be located is misplaced, as shown in the dashed box.

[0101] Based on this, for multiple scanning positions, the matching grid corresponding to each scanning position is obtained, thereby obtaining the matching grid corresponding to each scanning position; the intersection of the matching grids corresponding to each scanning position is taken to determine the current location of the file to be located.

[0102] For example, Figure 10 This is a schematic diagram illustrating the intersection of matching grid points at multiple scanning positions, as provided in an embodiment of this disclosure. Figure 5 and Figure 7 Based on, combined Figure 10 The left-hand diagram illustrates three scanning positions p1, p2, and p3. Each scanning position corresponds to multiple matching cells, as shown in the dashed box in the left-hand diagram. The intersection of the multiple matching cells corresponding to each scanning position is taken to determine a matching cell, as shown in the dashed box in the right-hand diagram. This matching cell can be used to determine the current location of the file to be located.

[0103] Based on the same inventive concept, this disclosure also provides a mis-shelf identification device for an unmanned archive storage room. The device is based on ultra-high frequency RFID. The RFID tag is affixed to the corresponding archive, and the RFID reader is fixed on the gripping arm device of the unmanned archive storage room. The RFID reader moves with the gripping arm device, forming a multi-degree-of-freedom RFID scanning system.

[0104] Figure 11 A schematic diagram of a mis-shelf identification device for an unmanned archive storage facility is also provided as an embodiment of this disclosure. (See attached diagram.) Figure 11 As shown, the device includes: a data acquisition unit 41, used to acquire the real-time signal strength value of the RFID tag corresponding to the file to be located, collected by a multi-degree-of-freedom RFID scanning system; and a data processing unit 42, used to compare the real-time signal strength value with the reference signal strength value of different areas in the reference field, determine the location of the file to be located, and identify whether the file to be located is misplaced; wherein, the reference field is a distribution field of reference signal strength values ​​of different areas based on multiple reference RFID tags at known locations and collected by RFID readers at multiple different locations.

[0105] In some embodiments, the apparatus further includes a reference field acquisition unit; the reference field acquisition unit is used to acquire a reference field before comparing the real-time signal strength value with the reference signal strength values ​​of different regions in the reference field; wherein, the plurality of reference RFID tags at known locations include pre-placed reference RFID tags and / or RFID tags corresponding to the on-shelf archives in the unmanned archive storage in the initial state; the known locations corresponding to the plurality of reference RFID tags include at least the top corner position and the center position of the archive shelf.

[0106] In some embodiments, the reference field acquisition unit is specifically used for:

[0107] The mobile multi-degree-of-freedom RFID scanning system is moved to multiple different locations to scan each reference RFID tag and obtain the signal strength value of each reference RFID tag corresponding to each different location;

[0108] Based on the signal strength values ​​of multiple reference RFID tags at known locations corresponding to different locations, the signal strength values ​​of storage cells without reference RFID tags are determined by interpolation.

[0109] A reference field is constructed based on the signal strength values ​​of multiple reference RFID tags at known locations corresponding to different locations, and the signal strength values ​​of storage slots without reference RFID tags corresponding to different locations.

[0110] In some embodiments, the data acquisition unit 41 is specifically used for:

[0111] Control the multi-degree-of-freedom RFID scanning system to traverse multiple different locations;

[0112] A multi-degree-of-freedom RFID scanning system is used to read the RFID tags corresponding to the files to be located at various locations and obtain the corresponding real-time signal strength values.

[0113] In some embodiments, the data processing unit 42 is specifically used for:

[0114] Compare the real-time signal strength values ​​at multiple different locations with the reference signal strength values;

[0115] For all locations across multiple different locations, if the real-time signal strength value is different from the reference signal strength value, it is determined that the file to be located is misplaced.

[0116] In some embodiments, the apparatus further includes:

[0117] The first determining unit is used to, after determining that the file to be located is misplaced, determine the matching grid corresponding to the reference signal strength value that is the same as the real-time signal strength value of the RFID tag corresponding to the file to be located for each of multiple different locations.

[0118] The second determining unit determines the current location of the file to be located by taking the intersection of the positions of all matching cells.

[0119] The mis-shelf identification device for unmanned archive storage provided in the above embodiments can perform any of the mis-shelf identification methods for unmanned archive storage provided in the above embodiments, and has the same or corresponding beneficial effects, which will not be described in detail here.

[0120] This disclosure also provides a computer-readable storage medium storing a program or instructions that cause a computer to perform the steps of any of the misplaced item identification methods for an unmanned archive storage facility provided in the above embodiments.

[0121] For example, a program or instructions cause a computer to perform a method for identifying misplaced items in an unattended archive vault, the method comprising:

[0122] Obtain the real-time signal strength value of the RFID tag corresponding to the file to be located, which is collected by the multi-degree-of-freedom RFID scanning system;

[0123] By comparing the real-time signal strength value with the reference signal strength value in different areas of the reference field, it can be determined whether the file to be located has been misplaced.

[0124] The reference field is a distribution field of reference signal strength values ​​in different areas, obtained by collecting data from multiple reference RFID tags at known locations using RFID readers at multiple different locations.

[0125] In some embodiments, when executed by a computer processor, the computer-executable instructions can also be used to execute the technical solution of any of the above-described methods for identifying misplaced items in an unmanned archive storage facility provided in the embodiments of this disclosure, thereby achieving the corresponding beneficial effects.

[0126] Based on the above description of the implementation methods, those skilled in the art will clearly understand that this disclosure can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0127] This disclosure also provides an electronic device, including: one or more processors; a memory for storing one or more programs or instructions; the processors execute the steps of any of the misplaced archive identification methods provided in the above embodiments by calling the programs or instructions stored in the memory, thereby achieving the corresponding beneficial effects.

[0128] Figure 12 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this disclosure. Figure 12 As shown, the electronic device includes one or more processors 501 and memory 502.

[0129] The processor 501 may be a central processing unit (CPU) or other form of processing unit with data processing and / or instruction execution capabilities, and may control other components in the electronic device to perform desired functions.

[0130] The memory 502 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 501 may execute the program instructions to implement the steps of the mis-shelf identification method for unmanned archives in the embodiments of this disclosure described above, and / or other desired functions. Various contents such as input signals, signal components, and noise components may also be stored in the computer-readable storage medium.

[0131] In one example, the electronic device may also include an input device 503 and an output device 504, which are interconnected via a bus system and / or other forms of connection mechanism (not shown).

[0132] In addition, the input device 503 may also include, for example, a keyboard, a mouse, etc.

[0133] The output device 504 can output various information to the outside, including determined distance information, direction information, etc. The output device 504 may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc.

[0134] Of course, for the sake of simplicity, Figure 12Only some of the components of the electronic device relevant to this disclosure are shown, omitting components such as buses, input / output terminals, etc. In addition, the electronic device may include any other suitable components depending on the specific application.

[0135] This disclosure also provides an unmanned archive warehouse, which uses the steps of any of the unmanned archive warehouse misplacement identification methods provided in the above embodiments to identify misplaced archives, and therefore has the same or similar beneficial effects, which will not be elaborated here.

[0136] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0137] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for identifying misplaced items in an unmanned archive storage facility, characterized in that, The method is based on ultra-high frequency RFID. RFID tags are affixed to corresponding files, and RFID readers are fixed to a gripper arm device in the unmanned file storage room. The RFID reader moves with the gripper arm device, forming a multi-degree-of-freedom RFID scanning system. The method includes: Obtain the real-time signal strength value of the RFID tag corresponding to the file to be located, which is collected by the multi-degree-of-freedom RFID scanning system; By comparing the real-time signal strength value with the reference signal strength values ​​of different regions in the reference field, it can be identified whether the file to be located has been misplaced. The reference field is a distribution field of reference signal strength values ​​in different areas obtained by using multiple reference RFID tags at known locations and RFID readers at multiple different locations. After determining that the file to be located is misplaced, for each of the multiple different locations, a matching grid corresponding to the reference signal strength value that is the same as the real-time signal strength value of the RFID tag corresponding to the file to be located is determined; The current location of the file to be located is determined by taking the intersection of the positions of all the matching grids.

2. The method according to claim 1, characterized in that, Before comparing the real-time signal strength value with the reference signal strength values ​​of different regions in the reference field, the method further includes: Obtain the reference field; The multiple reference RFID tags at the known locations include pre-placed reference RFID tags and / or RFID tags corresponding to the on-shelf archives in the unmanned archive warehouse in the initial state; The known locations corresponding to the plurality of reference RFID tags include at least the top corner and center of the file shelf.

3. The method according to claim 2, characterized in that, The acquisition of the reference field includes: The multi-degree-of-freedom RFID scanning system is moved to multiple different locations to scan each of the reference RFID tags and obtain the signal strength value of each reference RFID tag corresponding to each different location; Based on the signal strength values ​​of multiple reference RFID tags at known locations corresponding to different locations, the signal strength values ​​of storage cells without reference RFID tags are determined by interpolation. The reference field is constructed based on the signal strength values ​​of multiple reference RFID tags at the known locations corresponding to different locations and the signal strength values ​​of the storage slots where no reference RFID tags are placed corresponding to different locations.

4. The method according to any one of claims 1-3, characterized in that, The step of obtaining the real-time signal strength value of the RFID tag corresponding to the file to be located, collected by the multi-degree-of-freedom RFID scanning system, includes: Control the multi-degree-of-freedom RFID scanning system to traverse the multiple different locations; The multi-degree-of-freedom RFID scanning system is used to read the RFID tags corresponding to the files to be located at various locations to obtain the corresponding real-time signal strength values.

5. The method according to any one of claims 1-3, characterized in that, The step of comparing the real-time signal strength value with the reference signal strength values ​​of different regions in the reference field to identify whether the file to be located is misplaced includes: Compare the real-time signal strength values ​​corresponding to the multiple different locations with the reference signal strength values; For all of the multiple different locations, if the real-time signal strength value is different from the reference signal strength value, it is determined that the file to be located is misplaced.

6. A mis-shelf identification device for an unmanned archive storage room, characterized in that, The device is based on UHF RFID. RFID tags are affixed to corresponding files, and an RFID reader / writer is fixed to a gripper arm in the unmanned file storage room. The RFID reader / writer moves with the gripper arm, forming a multi-degree-of-freedom RFID scanning system. The device includes: The data acquisition unit is used to acquire the real-time signal strength value of the RFID tag corresponding to the file to be located, which is collected by the multi-degree-of-freedom RFID scanning system. The data processing unit is used to compare the real-time signal strength value with the reference signal strength value of different regions in the reference field, determine the location of the file to be located, and identify whether the file to be located is misplaced. The reference field is a distribution field of reference signal strength values ​​in different areas obtained by using multiple reference RFID tags at known locations and RFID readers at multiple different locations. The first determining unit is used to determine, after determining that the file to be located is misplaced, the matching grid corresponding to the reference signal strength value that is the same as the real-time signal strength value of the RFID tag corresponding to the file to be located for each of multiple different locations. The second determining unit determines the current location of the file to be located by taking the intersection of the positions of all matching cells.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program or instructions that cause a computer to perform the steps of the method as described in any one of claims 1-5.

8. An electronic device, characterized in that, include: Processor and memory; The processor executes the steps of the method as described in any one of claims 1-5 by invoking programs or instructions stored in the memory.

9. An unmanned warehouse, characterized in that, The steps of the method as described in any one of claims 1-5 are used to identify misplaced archives.

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