File positioning system based on intelligent file cabinet

Abstract

The invention provides a file positioning system based on an intelligent file cabinet, and relates to the technical field of document positioning, and the system comprises the intelligent file cabinet which is provided with a plurality of compartments used for storing personnel files, and each compartment is internally provided with a near field day; the RFID reader-writer is used for generating a first radio frequency signal with fixed intensity and transmitting the first radio frequency signal through the near-field antenna; the RFID electronic tag is used for being pasted on a personnel file and returning a second radio frequency signal after receiving the first radio frequency signal; the database is used for storing a first mapping table corresponding to the personnel archive and the RFID electronic tag and a second mapping table corresponding to the near-field antenna compartment; and the control module is used for analyzing the second radio frequency signal with the unique identifier, and determining the coordinates of the personnel file to be positioned in combination with a second mapping table. According to the invention, the positioning of the personnel archive is realized through the radio frequency technology, the position change of the personnel archive can be concerned at any time, and the situation that the personnel archive is lost due to manual misoperation is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of document positioning, and in particular to a file positioning system based on an intelligent file cabinet. Background Art

[0002] At present, the service agencies that provide storage for personnel files are generally local talent markets, district and county talent markets, and street offices. Personnel files are very important. During the storage period of personnel files, if you need to consult or borrow specific personnel files, you need to find the corresponding personnel files quickly and accurately. The traditional method is generally to register them manually, which is not only time-consuming, but also very inconvenient if you accidentally register them incorrectly, which will make it difficult to locate the documents.

[0003] Therefore, how to provide a method or system that can preserve personnel files so as to accurately locate the personnel files when needed is one of the difficult problems that technical personnel urgently need to solve. Summary of the invention

[0004] The present application provides a file positioning system based on an intelligent file cabinet to at least solve the above technical problems existing in the prior art.

[0005] According to a first aspect of the present application, a file positioning system based on an intelligent file cabinet is provided, comprising: The intelligent filing cabinet is provided with a number of compartments for storing personnel files, each compartment is provided with a near-field antenna for transmitting and receiving radio frequency signals, and each near-field antenna is assigned an identification code; An RFID reader / writer is electrically connected to all the near-field antennas, wherein the RFID reader / writer generates a first radio frequency signal of a fixed strength and transmits the first radio frequency signal through the near-field antenna; An RFID electronic tag is used to be attached to the personnel file; after the personnel file enters the compartment, the RFID electronic tag receives the first radio frequency signal and returns a second radio frequency signal, wherein the second radio frequency signal contains a unique identifier of the RFID electronic tag; A database for storing a first mapping table in which the codes of personnel files correspond to the unique identifiers of RFID electronic tags, and a second mapping table in which the identification codes of near-field antennas correspond to the coordinates of compartments; The control module determines the unique identifier corresponding to the personnel file to be located according to the first mapping table, analyzes the second radio frequency signal with the unique identifier, and determines the coordinates of the personnel file to be located in combination with the second mapping table.

[0006] In certain embodiments of the first aspect of the present application, a method for parsing the second radio frequency signal with the unique identifier and determining the coordinates of the personnel file to be located in combination with the second mapping table is as follows: S01, all near-field antennas sequentially poll and receive a second radio frequency signal with the unique identifier; S02, calculating and comparing the strengths of all second radio frequency signals, determining the second radio frequency signal with the greatest strength and the near-field antenna that receives the radio frequency signal with the greatest strength, and recording them as the nearest neighboring field antenna; S03: Determine, according to the second mapping table, the coordinates of the compartment corresponding to the identification code of the nearest neighboring field antenna, that is, the coordinates of the personnel file.

[0007] In certain embodiments of the first aspect of the present application, a method for parsing the second radio frequency signal with the unique identifier and determining the coordinates of the personnel file to be located in combination with the second mapping table is as follows: S11, selecting a first near-field antenna to receive a second radio frequency signal carrying the unique identifier; S12, determining the strength of the second radio frequency signal; S13, inversely calculating a first distance between the personnel file to be located and the first near-field antenna according to a relationship between the strength of the second radio frequency signal and the distance; S14, drawing a first perfect circle with the coordinates of the compartment where the first near-field antenna is located as the center and the first distance as the radius; S15, determining a plurality of compartments where the trajectory of the first perfect circle is located; S16, the near-field antennas in the compartments respectively receive the second radio frequency signal with the unique identifier; S17, calculating and comparing the strengths of all second radio frequency signals, determining the second radio frequency signal with the greatest strength and the near-field antenna that receives the second radio frequency signal with the greatest strength, and recording them as the nearest neighboring field antenna; S18, determining the coordinates of the compartment corresponding to the identification code of the nearest neighboring field antenna according to the second mapping table, that is, the coordinates of the personnel file.

[0008] In certain embodiments of the first aspect of the present application, in S11, a near-field antenna in a compartment at the exact center of the smart filing cabinet is selected as the first near-field antenna.

[0009] In certain embodiments of the first aspect of the present application, a method for parsing the second radio frequency signal with the unique identifier and determining the coordinates of the personnel file to be located in combination with the second mapping table is as follows: S21, selecting two near-field antennas, denoted as a second near-field antenna and a third near-field antenna, to respectively receive a second radio frequency signal with the unique identifier; S22, respectively determining the strength of the second radio frequency signal; S23, inferring a second distance between the personnel file to be located and the second near-field antenna, and a third distance between the personnel file to be located and the third near-field antenna, based on the relationship between the strength of the second radio frequency signal and the distance; S24, draw a second perfect circle with the coordinates of the compartment where the second near-field antenna is located as the center and the second distance as the radius; draw a third perfect circle with the coordinates of the compartment where the third near-field antenna is located as the center and the third distance as the radius; S25, calculating the intersection of the second perfect circle and the third perfect circle; S26, counting the number and positions of intersections, if there are two intersections and the two intersections are in different compartments, proceed to S27; if there are two intersections and the two intersections are in the same compartment, or there is only one intersection, proceed to S28; S27, the near-field antennas in the two different compartments respectively receive the second radio frequency signal with the unique identifier, calculate the strengths of all the second radio frequency signals and compare them, determine the second radio frequency signal with greater strength and the near-field antenna that receives the second radio frequency signal with greater strength, record them as the nearest neighboring field antenna, and determine the coordinates of the compartment corresponding to the identification code of the nearest neighboring field antenna according to the second mapping table, that is, the coordinates of the personnel file; S28, the coordinates of the compartment where the intersection is located, are the coordinates of the personnel file.

[0010] In certain embodiments of the first aspect of the present application, in S21, two near-field antennas diagonally opposite to each other of the smart filing cabinet are selected as the second near-field antenna and the third near-field antenna.

[0011] In some embodiments of the first aspect of the present application, the relationship between the strength of the second radio frequency signal and the distance is determined by the following method: A test RFID electronic tag is placed in one of the compartments of the smart filing cabinet, and the near-field antennas in all the compartments of the smart filing cabinet receive the second radio frequency signal returned by the test RFID electronic tag; A rectangular coordinate system is established with the distance between the compartment where the near-field antenna receiving the signal is located and the compartment where the test RFID electronic tag is located as the horizontal coordinate and the strength of the second radio frequency signal as the vertical coordinate to record the measured data points; The data points are subjected to curve fitting to obtain a relationship between the intensity of the second radio frequency signal and the distance.

[0012] In certain embodiments of the first aspect of the present application, the authenticity of the nearest proximity field antenna is verified according to the strength of the second radio frequency signal received by the nearest proximity field antenna.

[0013] In certain embodiments of the first aspect of the present application, the authenticity verification method of the nearest neighboring field antenna is as follows: If the strength of the second RF signal received by the nearest neighboring field antenna is greater than the set signal strength threshold, the current nearest neighboring field antenna remains unchanged; otherwise, other near-field antennas adjacent to the current nearest neighboring field antenna are allowed to receive the second RF signal with the unique identifier, and the near-field antenna that receives the second RF signal with the maximum strength is selected and reconfirmed as the nearest neighboring field antenna.

[0014] In certain embodiments of the first aspect of the present application, the method for determining the signal strength threshold is as follows: the second radio frequency signal received by the near-field antenna in the same compartment as the test RFID electronic tag is multiplied by a coefficient k to obtain a signal strength threshold, and the value range of the coefficient k is [0.8, 0.9].

[0015] According to a second aspect of the present application, a file positioning method based on an intelligent file cabinet is provided, comprising the following steps: A1, providing an intelligent filing cabinet, wherein the intelligent filing cabinet is provided with a plurality of compartments for storing personnel files, each compartment is provided with a near-field antenna for transmitting and receiving radio frequency signals, and each near-field antenna is assigned an identification code; A2, attach RFID electronic tags to personnel files; A3, the RFID reader generates a first radio frequency signal with a fixed strength and transmits it via a near-field antenna; A4, after the personnel file enters the compartment, the RFID electronic tag receives the first radio frequency signal and returns a second radio frequency signal, wherein the second radio frequency signal contains a unique identifier of the RFID electronic tag; A5, constructing a database to store a first mapping table in which the codes of personnel files correspond to the unique identifiers of RFID electronic tags, and a second mapping table in which the identification codes of near-field antennas correspond to the coordinates of compartments; A6: Determine the unique identifier corresponding to the personnel file to be located according to the first mapping table, parse the second radio frequency signal with the unique identifier, and determine the coordinates of the personnel file to be located in combination with the second mapping table.

[0016] According to a third aspect of the present application, an electronic device is provided, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method described in the present application.

[0017] According to a fourth aspect of the present application, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to enable the computer to execute the method described in the present application.

[0018] Compared with the prior art, this application has the following beneficial effects: This application implements automatic positioning of personnel files by attaching RFID electronic tags to personnel files, transmitting and receiving radio frequency signals between near-field antennas in different compartments of smart filing cabinets and RFID electronic tags, and analyzing radio frequency signals to determine the coordinates of the RFID electronic tags to be located and personnel files. This application implements the positioning of personnel files through radio frequency technology. Compared with traditional manual registration, it not only has accurate identification and saves a lot of manpower, but also can always pay attention to the location changes of personnel files, avoiding the loss of personnel files due to manual misoperation.

[0019] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become readily understood. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, wherein: In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0021] Figure 1 A schematic diagram of an archive locating system according to Embodiment 1 of the present application is shown.

[0022] Figure 2 A curve diagram showing the relationship between distance and signal strength in Example 1 of the present application is shown.

[0023] Figure 3 A flow chart of Solution 1 for locating personnel files in Embodiment 1 of the present application is shown.

[0024] Figure 4 A flow chart of Solution 2 for locating personnel files in Embodiment 1 of the present application is shown.

[0025] Figure 5 A schematic diagram of single point positioning analysis of Example 1 of the present application is shown.

[0026] Figure 6 A flow chart of Solution 3 for locating personnel files in Embodiment 1 of the present application is shown.

[0027] Figure 7 A schematic diagram of dual-point positioning analysis of Example 1 of the present application is shown.

[0028] Figure 8 A schematic diagram of the file locating method flow in the second embodiment of the present application is shown.

[0029] Fig. 9 A schematic diagram of the structure of an electronic device according to an embodiment of the present application is shown.

[0030] Description of reference numerals: 1. Smart filing cabinet; 2. Compartment; 3. Near-field antenna; 4. RFID reader / writer; 5. RFID electronic tag; 6. Personnel file. DETAILED DESCRIPTION

[0031] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0032] Embodiment 1: This embodiment provides a file positioning system based on an intelligent file cabinet. Figure 1 ,This system mainly includes: intelligent filing cabinet 1, RFID reader 4, RFID electronic tag 5, database, control module and so on.

[0033] The smart filing cabinet 1 is provided with a plurality of compartments 2 for storing personnel files 6. A near-field antenna 3 is provided in each compartment 2 to realize the reception and transmission of radio frequency signals. Each near-field antenna 3 is assigned an identification code, and the identification code is recorded as Id_i, wherein i represents the serial number of the near-field antenna and the compartment. Taking this embodiment as an example, a total of 7×7=49 compartments 2 are provided on the smart filing cabinet 1, and the compartment serial numbers are 1-49, and the corresponding identification codes of the near-field antenna 3 are Id_1-Id_49.

[0034] The RFID reader / writer 4 is electrically connected to all near-field antennas 3. The RFID reader / writer 4 generates a first radio frequency signal RF1 of fixed intensity and transmits it through the near-field antenna 3. The near-field antenna 3 converts the first radio frequency signal RF1 into electromagnetic waves, forming an electromagnetic field in the surrounding space, which serves as the basis for communicating with the RFID electronic tag.

[0035] The RFID electronic tag 5 is used to be attached to the personnel file 6; after the personnel file 6 enters the compartment 2, the RFID electronic tag 5 receives the first radio frequency signal RF1 and returns the second radio frequency signal RF2, and the second radio frequency signal RF2 contains the unique identifier UID of the RFID electronic tag. The unique identifier of the RFID electronic tag is recorded as UID_j, where j represents the serial number of the RFID electronic tag.

[0036] The database is used to store a first mapping table of one-to-one correspondence between the codes of personnel files and the unique identifiers of RFID electronic tags, and a second mapping table of one-to-one correspondence between the identification codes of near-field antennas and the coordinates of compartments for subsequent analysis and processing.

[0037] Specifically, before the personnel file is filed, that is, before it is placed in the compartment 1 of the intelligent filing cabinet 1, an RFID electronic tag 5 is affixed to the personnel file, and the corresponding personnel file code is written on the RFID electronic tag through an RFID reader / writer. The code can be the name and / or ID number information of the personnel file.

[0038] Then, the corresponding relationship between the code of the personnel file and the unique identifier UID_j of the RFID electronic tag is sequentially stored in the database to form a first mapping table.

[0039] Similarly, when setting the near-field antenna, the serial number i and coordinates of each compartment are first recorded. It is worth mentioning that the coordinates are the coordinates of the compartment in the plane where the smart filing cabinet is located. Then, according to the near-field antenna corresponding to each compartment, the identification code Id_i of the near-field antenna and the coordinates of the compartment are further recorded to form a second mapping table.

[0040] The control module determines the unique identifier UID_j corresponding to the personnel file to be located according to the first mapping table, analyzes the second radio frequency signal with the unique identifier, and determines the coordinates of the personnel file to be located in combination with the second mapping table.

[0041] According to electromagnetic field theory, in free space, the strength of the second RF signal received by the near-field antenna is inversely proportional to the square of the distance between the near-field antenna and the RFID tag, that is, when the distance doubles, the signal strength will become one-fourth of the original. That is, the relationship between distance (s) and signal strength (s) is roughly as follows: Figure 2 shown.

[0042] That is to say, based on the strength of the second radio frequency signal returned by the RFID electronic tag attached to the personnel file to be located and received by the near-field antenna, the relative distance between the near-field antenna and the RFID electronic tag can be inferred, thereby further locating the personnel file.

[0043] Therefore, this embodiment parses the second radio frequency signal with the unique identifier through the following three schemes, and determines the coordinates of the personnel file to be located in combination with the second mapping table.

[0044] Option 1: like Figure 3 As shown, this scheme 1 includes the following steps: S01, all near-field antennas Id_i sequentially poll and receive a second radio frequency signal RF2 (Id_i, UID_j) with the unique identifier UID_j; S02, calculating and comparing the strengths of all second radio frequency signals RF2 (Id_i, UID_j), determining the second radio frequency signal RF2 (Id_i, UID_j) with the greatest strength and the near-field antenna Id_i that receives the radio frequency signal with the greatest strength, and recording them as the nearest neighboring field antenna; According to the relationship between signal strength and distance, the near-field antenna Id_i receiving the second radio frequency signal with the greatest strength is the closest to the RFID electronic tag UID_j (ie, the personnel file to be located) among all near-field antennas.

[0045] S03, therefore, it can be further determined that the corresponding personnel file and the near-field antenna Id_i are in the same compartment i, and according to the second mapping table, the compartment i corresponding to the identification code Id_i of the nearest proximity field antenna is determined, and the personnel file is located in the compartment i, and the coordinates of the compartment i are the coordinates of the personnel file.

[0046] Option 2: like Figure 4 As shown, a method based on single point positioning is provided, comprising the following steps: S11, select the first near-field antenna Id_i1 to receive the second radio frequency signal RF2 (Id_i1, UID_j) with the unique identifier UID_j. It is worth mentioning that, if Figure 5 As shown, the near-field antenna in the compartment i1 at the exact center of the intelligent filing cabinet is preferably the first near-field antenna Id_i1.

[0047] S12, determining the strength RF2 (Id_i1, UID_j) of the second radio frequency signal; S13, based on the relationship between the strength of the second radio frequency signal and the distance, inferring the first distance r1 between the personnel file to be located and the first near-field antenna Id_i1; S14, draw a first perfect circle with the coordinates of the compartment i1 where the first near-field antenna is located as the center and the first distance r1 as the radius; S15, determining a plurality of compartments where the trajectory of the first perfect circle is located, such as Figure 5As shown, the 12 compartments indicated by the red lines are the compartments where the first positive source is located.

[0048] S16, the near-field antennas in the compartments respectively receive the second radio frequency signal with the unique identifier UID_j; S17, calculating and comparing the strengths of all second radio frequency signals, determining the second radio frequency signal with the greatest strength and the near-field antenna that receives the second radio frequency signal with the greatest strength, and recording them as the nearest neighboring field antenna; S18, determining the coordinates of the compartment corresponding to the identification code of the nearest neighboring field antenna according to the second mapping table, that is, the coordinates of the personnel file.

[0049] Compared with Solution 1, this solution does not need to traverse all near-field antennas. It only needs the near-field antennas in multiple compartments of the trajectory of the first perfect circle to receive the second radio frequency signal, which can greatly reduce the amount of calculation and locate the required personnel files more quickly.

[0050] Option 3: like Figure 6 As shown, in order to further reduce the amount of calculation and quickly locate, a method based on dual-point positioning is provided, including the following steps: S21, select two near-field antennas, such as Figure 7 As shown, preferably, two near-field antennas diagonally opposite to each other of the intelligent filing cabinet are denoted as the second near-field antenna Id_i2 and the third near-field antenna Id_i3, which respectively receive the second radio frequency signal RF2 (Id_i2, UID_j) and RF2 (Id_i3, UID_j) with the unique identifier; S22, respectively determining the strength of the second radio frequency signal; S23, inversely calculating a second distance r2 between the personnel file to be located and the second near-field antenna, and a third distance r3 between the personnel file to be located and the third near-field antenna, based on the relationship between the strength of the second radio frequency signal and the distance; S24, draw a second perfect circle with the coordinates of the compartment where the second near-field antenna is located as the center and the second distance as the radius; draw a third perfect circle with the coordinates of the compartment where the third near-field antenna is located as the center and the third distance as the radius; S25, calculating the intersection point of the second perfect circle and the third perfect circle; there are generally two intersection points, and in the limit case there is only one intersection point.

[0051] S26, count the number and location of intersections, such as Figure 7 As shown, if there are two intersection points and the two intersection points are in different compartments (i.e. Figure 7 The compartment where the red frame is located), go to S27; if there are two intersection points and the two intersection points are in the same compartment, or there is only one intersection point, go to S28; S27, the near-field antennas in the two different compartments respectively receive the second radio frequency signal with the unique identifier, calculate the strengths of all the second radio frequency signals and compare them, determine the second radio frequency signal with greater strength and the near-field antenna that receives the second radio frequency signal with greater strength, record them as the nearest neighboring field antenna, and determine the coordinates of the compartment corresponding to the identification code of the nearest neighboring field antenna according to the second mapping table, that is, the coordinates of the personnel file; S28, the coordinates of the compartment where the intersection is located, are the coordinates of the personnel file.

[0052] Compared with Solution 2, this solution only requires near-field antennas in up to 4 compartments to receive the second RF signal, which can further reduce the amount of calculation and locate the required personnel files more quickly.

[0053] In the above-mentioned scheme 2 and scheme 3, the relationship between the strength of the second radio frequency signal and the distance is determined by the following method: A test RFID electronic tag is placed in one of the compartments of the smart filing cabinet, and the near-field antennas in all the compartments of the smart filing cabinet receive the second radio frequency signal returned by the test RFID electronic tag; A rectangular coordinate system is established with the distance between the compartment where the near-field antenna receiving the signal is located and the compartment where the test RFID electronic tag is located as the horizontal coordinate and the strength of the second radio frequency signal as the vertical coordinate to record the measured data points; The data points are curve fitted to obtain the relationship between the strength of the second radio frequency signal and the distance, that is, Figure 2 The relationship curve between distance (s) and signal strength (s) is shown.

[0054] However, the material of the intelligent filing cabinet will more or less affect the electromagnetic field, and the number of material layers passed through in different directions is not the same. For example, the same distance passes through three compartments in the horizontal direction, while it may pass through four or even five compartments in the inclined direction. Therefore, the number of material layers passed through will also increase, resulting in differences in the relationship between distance (s) and signal strength (s) in different directions, which ultimately leads to inaccurate position of the nearest neighbor field antenna in the final confirmation. It is worth mentioning that this inaccuracy will not deviate too far. Generally, the near-field antenna in the compartment adjacent to the compartment where the personnel file to be located is actually located is determined as the nearest neighbor field antenna.

[0055] Based on this, the present application also verifies the authenticity of the nearest neighboring field antenna according to the strength of the second radio frequency signal received by the nearest neighboring field antenna. The authenticity verification method is as follows: If the strength of the second RF signal received by the nearest neighboring field antenna is greater than the set signal strength threshold, it means that the near-field antenna receiving the second RF signal is in the same compartment as the personnel file to be located, and the current nearest neighboring field antenna remains unchanged.

[0056] The method for determining the signal strength threshold is as follows: the second radio frequency signal received by the near-field antenna in the same compartment as the test RFID electronic tag is multiplied by a coefficient k to obtain a signal strength threshold, and the value range of the coefficient k is [0.8, 0.9].

[0057] Otherwise, it means that the near-field antenna receiving the second RF signal is not in the same compartment as the personnel file to be located, and the nearest neighboring field antenna needs to be reconfirmed. Specifically, other near-field antennas adjacent to the current nearest neighboring field antenna are required to receive the second RF signal with the unique identifier, and the near-field antenna that receives the second RF signal with the maximum intensity is selected and reconfirmed as the nearest neighboring field antenna.

[0058] It is worth mentioning that the authenticity verification step can be repeated multiple times until the strength of the second RF signal received by the nearest neighboring field antenna is finally confirmed to be greater than the set signal strength threshold, thereby ultimately achieving accurate positioning of the personnel file.

[0059] Embodiment 2: This embodiment 2 provides a file positioning method based on an intelligent file cabinet. Figure 8 As shown, the following steps are included: A1, providing an intelligent filing cabinet, wherein the intelligent filing cabinet is provided with a plurality of compartments for storing personnel files, each compartment is provided with a near-field antenna for transmitting and receiving radio frequency signals, and each near-field antenna is assigned an identification code; A2, attach RFID electronic tags to personnel files; A3, the RFID reader generates a first radio frequency signal with a fixed strength and transmits it via a near-field antenna; A4, after the personnel file enters the compartment, the RFID electronic tag receives the first radio frequency signal and returns a second radio frequency signal, wherein the second radio frequency signal contains a unique identifier of the RFID electronic tag; A5, constructing a database to store a first mapping table in which the codes of personnel files correspond to the unique identifiers of RFID electronic tags, and a second mapping table in which the identification codes of near-field antennas correspond to the coordinates of compartments; A6: Determine the unique identifier corresponding to the personnel file to be located according to the first mapping table, parse the second radio frequency signal with the unique identifier, and determine the coordinates of the personnel file to be located in combination with the second mapping table.

[0060] In step A6, the same three solutions as those in the first embodiment are included to realize the location of the personnel file and the method of authenticity verification, which will not be described in detail here.

[0061] Embodiment three: This third embodiment also provides an electronic device and a readable storage medium.

[0062] Fig. 9 A schematic block diagram of an example electronic device that can be used to implement an embodiment of the present application is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present application described and / or required herein.

[0063] like Fig. 9 As shown, the device includes a computing unit, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) or a computer program loaded from a storage unit into a random access memory (RAM). In the RAM, various programs and data required for the operation of the device can also be stored. The computing unit, ROM, and RAM are connected to each other through a bus. An input / output (I / O) interface is also connected to the bus.

[0064] Multiple components in the device are connected to the I / O interface, including: input units, such as keyboards, mice, etc.; output units, such as various types of displays, speakers, etc.; storage units, such as disks, optical disks, etc.; and communication units, such as network cards, modems, wireless communication transceivers, etc. The communication unit allows the device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunication networks.

[0065] The computing unit may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of computing units include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The computing unit performs the various methods and processes described above, such as the file positioning method based on the smart filing cabinet described in Example 1. For example, in some embodiments, the file positioning method based on the smart filing cabinet may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and / or installed on the device via a ROM and / or a communication unit. When the computer program is loaded into RAM and executed by the computing unit, one or more steps of the file positioning method based on the smart filing cabinet described above may be performed. Alternatively, in other embodiments, the computing unit may be configured to perform the file positioning method based on the smart filing cabinet in any other appropriate manner (e.g., by means of firmware).

[0066] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0067] The program code for implementing the method of the present application can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that the program code, when executed by the processor or controller, implements the functions / operations specified in the flow chart and / or block diagram. The program code can be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0068] In the context of the present application, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0069] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0070] The systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), and the Internet.

[0071] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship of client and server is generated by computer programs running on respective computers and having a client-server relationship with each other. The server may be a cloud server, a server of a distributed system, or a server combined with a blockchain.

[0072] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this application can be executed in parallel, sequentially or in different orders, as long as the expected results of the technical solution of this application can be achieved, and this document is not limited here.

[0073] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0074] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A file positioning system based on an intelligent file cabinet, characterized in that: include: The intelligent filing cabinet is provided with a number of compartments for storing personnel files, each compartment is provided with a near-field antenna for transmitting and receiving radio frequency signals, and each near-field antenna is assigned an identification code; An RFID reader / writer is electrically connected to all the near-field antennas, wherein the RFID reader / writer generates a first radio frequency signal of a fixed strength and transmits the first radio frequency signal through the near-field antenna; An RFID electronic tag is used to be attached to the personnel file; after the personnel file enters the compartment, the RFID electronic tag receives the first radio frequency signal and returns a second radio frequency signal, wherein the second radio frequency signal contains a unique identifier of the RFID electronic tag; A database for storing a first mapping table in which the codes of personnel files correspond to the unique identifiers of RFID electronic tags, and a second mapping table in which the identification codes of near-field antennas correspond to the coordinates of compartments; The control module determines the unique identifier corresponding to the personnel file to be located according to the first mapping table, analyzes the second radio frequency signal with the unique identifier, and determines the coordinates of the personnel file to be located in combination with the second mapping table.

2. The file positioning system based on the intelligent file cabinet according to claim 1 is characterized in that: The method of parsing the second radio frequency signal with the unique identifier and determining the coordinates of the personnel file to be located in combination with the second mapping table is as follows: S01, all near-field antennas sequentially poll and receive a second radio frequency signal with the unique identifier; S02, calculating and comparing the strengths of all second radio frequency signals, determining the second radio frequency signal with the greatest strength and the near-field antenna that receives the radio frequency signal with the greatest strength, and recording them as the nearest neighboring field antenna; S03: Determine, according to the second mapping table, the coordinates of the compartment corresponding to the identification code of the nearest neighboring field antenna, that is, the coordinates of the personnel file.

3. The file positioning system based on the intelligent file cabinet according to claim 1 is characterized in that: The method of parsing the second radio frequency signal with the unique identifier and determining the coordinates of the personnel file to be located in combination with the second mapping table is as follows: S11, selecting a first near-field antenna to receive a second radio frequency signal carrying the unique identifier; S12, determining the strength of the second radio frequency signal; S13, inversely calculating a first distance between the personnel file to be located and the first near-field antenna according to a relationship between the strength of the second radio frequency signal and the distance; S14, drawing a first perfect circle with the coordinates of the compartment where the first near-field antenna is located as the center and the first distance as the radius; S15, determining a plurality of compartments where the trajectory of the first perfect circle is located; S16, the near-field antennas in the compartments respectively receive the second radio frequency signal with the unique identifier; S17, calculating and comparing the strengths of all second radio frequency signals, determining the second radio frequency signal with the greatest strength and the near-field antenna that receives the second radio frequency signal with the greatest strength, and recording them as the nearest neighboring field antenna; S18, determining the coordinates of the compartment corresponding to the identification code of the nearest neighboring field antenna according to the second mapping table, that is, the coordinates of the personnel file.

4. The file positioning system based on the intelligent file cabinet according to claim 3 is characterized in that: In S11, the near-field antenna in the compartment at the exact center of the smart filing cabinet is selected as the first near-field antenna.

5. The file positioning system based on the intelligent file cabinet according to claim 1 is characterized in that: The method of parsing the second radio frequency signal with the unique identifier and determining the coordinates of the personnel file to be located in combination with the second mapping table is as follows: S21, selecting two near-field antennas, denoted as a second near-field antenna and a third near-field antenna, to respectively receive a second radio frequency signal with the unique identifier; S22, respectively determining the strength of the second radio frequency signal; S23, inferring a second distance between the personnel file to be located and the second near-field antenna, and a third distance between the personnel file to be located and the third near-field antenna, based on the relationship between the strength of the second radio frequency signal and the distance; S24, draw a second perfect circle with the coordinates of the compartment where the second near-field antenna is located as the center and the second distance as the radius; draw a third perfect circle with the coordinates of the compartment where the third near-field antenna is located as the center and the third distance as the radius; S25, calculating the intersection of the second perfect circle and the third perfect circle; S26, counting the number and positions of intersections, if there are two intersections and the two intersections are in different compartments, proceed to S27; if there are two intersections and the two intersections are in the same compartment, or there is only one intersection, proceed to S28; S27, the near-field antennas in the two different compartments respectively receive the second radio frequency signal with the unique identifier, calculate the strengths of all the second radio frequency signals and compare them, determine the second radio frequency signal with greater strength and the near-field antenna that receives the second radio frequency signal with greater strength, record them as the nearest neighboring field antenna, and determine the coordinates of the compartment corresponding to the identification code of the nearest neighboring field antenna according to the second mapping table, that is, the coordinates of the personnel file; S28, the coordinates of the compartment where the intersection is located, are the coordinates of the personnel file.

6. The file positioning system based on the intelligent file cabinet according to claim 5 is characterized in that: In S21, two near-field antennas diagonally opposite to each other of the smart filing cabinet are selected as the second near-field antenna and the third near-field antenna.

7. A file positioning system based on an intelligent file cabinet according to claim 3 or 5, characterized in that: The relationship between the strength of the second radio frequency signal and the distance is determined by the following method: A test RFID electronic tag is placed in one of the compartments of the smart filing cabinet, and the near-field antennas in all the compartments of the smart filing cabinet receive the second radio frequency signal returned by the test RFID electronic tag; A rectangular coordinate system is established with the distance between the compartment where the near-field antenna receiving the signal is located and the compartment where the test RFID electronic tag is located as the horizontal coordinate and the strength of the second radio frequency signal as the vertical coordinate to record the measured data points; The data points are subjected to curve fitting to obtain a relationship between the intensity of the second radio frequency signal and the distance.

8. A file positioning system based on an intelligent file cabinet according to claim 3 or 5, characterized in that: The authenticity of the nearest neighboring field antenna is verified according to the strength of the second radio frequency signal received by the nearest neighboring field antenna.

9. The file positioning system based on the intelligent file cabinet according to claim 8 is characterized in that: The authenticity verification method of the nearest neighbor field antenna is as follows: If the strength of the second RF signal received by the nearest neighboring field antenna is greater than the set signal strength threshold, the current nearest neighboring field antenna remains unchanged; otherwise, other near-field antennas adjacent to the current nearest neighboring field antenna are allowed to receive the second RF signal with the unique identifier, and the near-field antenna that receives the second RF signal with the maximum strength is selected and reconfirmed as the nearest neighboring field antenna.

10. The file positioning system based on the intelligent file cabinet according to claim 9, characterized in that: The method for determining the signal strength threshold is as follows: the second radio frequency signal received by the near-field antenna in the same compartment as the test RFID electronic tag is multiplied by a coefficient k to obtain a signal strength threshold, and the value range of the coefficient k is [0.8, 0.9].

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