Fast archive in-out system and method based on ultrahigh frequency RFID recognition filtering algorithm

Abstract

The invention discloses a fast archive warehouse-in and warehouse-out system and method based on an ultrahigh-frequency RFID recognition filtering algorithm. The system comprises an intelligent cabinet, a management terminal, a card reading device, an ultrahigh-frequency RFID antenna and a sensing device. According to the invention, based on the ultrahigh frequency RFID identification filtering algorithm, the signal strength RSSI value of the ultrahigh frequency RFID tag is utilized to filter the data, the accurate ultrahigh frequency RFID tag value can be determined, and the warehousing operation can be completed only by inserting the archive to be warehoused into the positioning jack of any sensing device during the warehousing operation. And the warehouse-out operation can be completed only by pulling out the archives to be delivered from the positioning insertion holes of the induction devices, so that external RFID identification equipment is not needed during warehouse-in and warehouse-out, the consumed time is short, and the efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of Internet of Things, and in particular to a system and method for quickly accessing and disembarking archives based on an ultra-high frequency RFID identification and filtering algorithm. Background Art

[0002] Technical terms: RSSI value: It reflects the signal strength value when the UHF RFID tag is read by the UHF RFID antenna. In theory, the closer the tag is to the antenna, the higher the signal strength it will eventually read (Note: RSSI is a negative value, that is, the smaller the absolute value of RSSI, the greater the signal strength).

[0003] Archives are precious historical records. Due to historical reasons, paper is the main medium for recording. With the development of computer technology, the use of electronic archives is becoming more and more extensive. However, considering the authenticity of archives, the information security of archives, and the permanence of their value, paper archives still have their unique role and significance in the information age.

[0004] At present, in paper archive management, one-dimensional or two-dimensional code labels are the most commonly used identification technologies, and they are also the most widely used technologies. Commonly used labels are identified by visible light scanning. Therefore, if the label is stained, folded, etc. during use, it will not be recognized. In addition, when collecting barcodes, light must be aligned with the barcode, and it cannot be collected outside of light. Therefore, barcode technology is usually inefficient and not easy to read in batches.

[0005] UHF RFID tags work in the UHF band, and the reading and writing distance can usually reach 3-8 meters. As long as the RFID tags are within the antenna signal range, they can be read, and hundreds of them can be read at a time. This feature can be applied to the management of archives, which can greatly improve efficiency. It is very convenient for operations such as warehousing, out of the warehouse, and inventory. Compared with conventional tags, reading and writing distance, non-visual reading and writing, and one-time batch reading, UHF RFID tags have considerable advantages. In addition, UHF RFID tags can be read and written repeatedly and reused.

[0006] The above describes many advantages of UHF RFID tags, but in actual applications, some of these advantages are actually disadvantages. For example, its long reading and writing distance has caused great interference to the technical implementation of file storage and precise positioning, which is manifested in: 1. When files are stored in the warehouse, other interfering UHF RFID tags besides the target UHF RFID tag may be read, and the accurate UHF RFID tag value cannot be determined.

[0007] 2. One inventory count can read hundreds of UHF RFID tags within a certain range, so it is impossible to accurately locate the location of a specific UHF RFID tag in the warehouse.

[0008] 3. The inventory scope is uncontrollable and inventory cannot be conducted in a specific area. Summary of the invention

[0009] The purpose of the present invention is to overcome the above-mentioned technical problems and provide a fast archive access system based on ultra-high frequency RFID identification and filtering algorithm.

[0010] To achieve the above purpose, the technical solution adopted by the present invention is as follows: The archive rapid access system based on UHF RFID identification and filtering algorithm includes: A smart cabinet, wherein the smart cabinet has multiple layers, each layer has two sides, each side is a compartment, and the compartment is used to store file units; A management terminal, connected to the smart cabinet for communication; A card reader device, the card reader device is installed on the smart cabinet; There is at least one UHF RFID antenna in each compartment; A plurality of sensing devices, each of which is installed on each layer of the smart cabinet, and each of which is provided with a positioning socket for connecting to a positioning plug on the archive unit; When there is only one UHF RFID antenna, the card reader turns on only the unique UHF RFID antenna within the area corresponding to the positioning socket when the file unit is inserted into the area, and obtains the RFID tag identifying the file unit through the UHF RFID antenna; When there are multiple UHF RFID antennas, the card reader turns on the adjacent UHF RFID antenna according to the file unit inserted into the positioning socket, and obtains the RFID tag identifying the file unit through the adjacent UHF RFID antenna; The card reader device identifies whether the file unit is currently on the sensing device through the state of the positioning socket of the sensing device; The filtering module includes a first-stage filtering module, a second-stage filtering module and a third-stage filtering module in sequence. First-level filtering module: the card reader compares all the identified RFID tags with the stored local historical inventory RFID tag information, removes duplicate RFID tags, and obtains incremental RFID tags; If the incremental RFID tag is unique, the incremental RFID tag is the RFID tag value finally inserted into the archive unit; If the incremental RFID tag is not unique, it is necessary to enter the second-level filtering module; Second-stage filtering module: sort all the incremental RFID tags according to their respective signal strength RSSI values ​​to obtain the RFID tag with the maximum signal strength RSSI value, and the RFID tag with the maximum RSSI value is the filtered RFID tag finally output by the second-stage filtering module; If the filtering RFID tag is unique, the filtering RFID tag is the RFID tag value finally inserted into the archive unit, and the filtering module operation is ended and the storage module operation is entered; If the filtering RFID tag is not unique, enter the third level filtering module; Third-level filtering module: If the filtered RFID tag output after filtering by the second-level filtering module is not unique, human intervention is required to select one as the RFID tag value finally inserted into the archive unit, and all filtering module operations are terminated, and the next step of storage module operation is entered; In the storage module, the card reader binds the RFID tags obtained after filtering by the filtering module to the sensing devices one by one, updates their local data, and then sends the binding information to the management terminal for updating, completing the synchronization operation, thereby completing the file storage.

[0011] Furthermore, it also includes an outbound module: after the card reader detects that the file unit in the sensing device is pulled out, it reports the information to the management terminal, and the management terminal unbinds the binding relationship between the file unit and the sensing device and updates it to an outbound status. The card reader also unbinds the binding relationship between the file unit and the sensing device to complete the file outbound.

[0012] Furthermore, it also includes an inventory module: when executing a new round of inventory, the relevant ultra-high frequency RFID antenna is started for identification to obtain the RFID tag data results of this round of inventory.

[0013] Furthermore, it also includes a query module: by inputting the file information to be queried on the management terminal, the door of the compartment where the file to be queried is located can be controlled to open automatically, and the indicator light of the sensing device at the corresponding position lights up for guidance.

[0014] The present invention also provides a quick archive access system based on an ultra-high frequency RFID identification and filtering algorithm, the steps of which are: S1: The card reader detects the positioning socket status of the sensing device in real time When the card reader detects that the positioning plug of the file unit is inserted into the positioning socket of the sensing device, the card reader only turns on the UHF RFID antenna in the area where the sensor is located, and reads and identifies the RFID tag data information through the UHF RFID antenna; S2: Filter data using the signal strength RSSI value of the RFID tag First-level filtering: the card reader compares all the identified RFID tags with the stored local historical inventory RFID tag information, removes duplicate RFID tags, and obtains incremental RFID tags; If the incremental RFID tag is unique, the incremental RFID tag is the RFID tag value finally inserted into the archive unit, the filtering operation is ended, and the process proceeds to step S3 for storage operation; If the incremental RFID tag is not unique, it is necessary to enter the second level of filtering; Second-level filtering: sorting all the incremental RFID tags according to their respective signal strength RSSI values ​​to obtain the RFID tag with the maximum signal strength RSSI value, and the RFID tag with the maximum RSSI value is the filtered RFID tag finally output by the second-level filtering module; If the filtering RFID tag is unique, the filtering RFID tag is the RFID tag value finally inserted into the archive unit, and the filtering operation is ended, and the process proceeds to step S3 for storage operation; If the filtering RFID tag is not unique, the third level of filtering is performed; Third-level filtering: If the filtered RFID tag output after the second-level filtering process is not unique, human intervention is required to select one as the RFID tag value finally inserted into the archive unit, and all filtering operations are terminated, and the storage operation is entered into step S3; S3: Archive storage The card reader binds the RFID tags selected in step S2 to the positions of the sensing devices one by one, generates binding information, updates the local data of the card reader, and sends it to the management terminal to achieve data synchronization and complete the file storage.

[0015] Furthermore, the step S1 in which the card reader detects the state of the positioning socket of the sensing device in real time also includes: If multiple UHF RFID antennas are installed on each layer of the smart cabinet, when the card reader detects that the positioning plug of the file unit is inserted into the positioning socket of the sensing device, the card reader only turns on the UHF RFID antenna adjacent to the area where the sensor is located, and the UHF RFID antenna starts to read the RFID tag data information.

[0016] Furthermore, the method further comprises step S4: archive out of the warehouse; When the card reader detects that the positioning plug in a certain sensing device is unplugged, the information is reported to the management terminal. The management terminal unbinds the RFID tag data information bound to the sensing device and updates it to the outbound status. The card reader also unbinds the RFID tag data information bound to the sensing device. At this time, the data of the card reader and the management terminal are synchronized to complete the file outbound.

[0017] Furthermore, a query method is also included, specifically: By inputting the file information to be queried on the management terminal, the door of the compartment where the file to be queried is located can be controlled to open automatically, and the indicator light of the sensor device at the corresponding position will light up for guidance.

[0018] Furthermore, it also includes an inventory method, specifically: When a new round of inventory is carried out after executing step S3, the relevant ultra-high frequency RFID antenna is started for identification to obtain the RFID tag data results of this round of inventory.

[0019] Furthermore, the RSSI value is an RSSI average value.

[0020] Beneficial effects of the present invention: 1. File storage operation: The present invention only needs to insert the file to be stored into the positioning socket of any sensing device to complete the storage operation, without the need to use an external RFID identification device, which is time-saving, efficient and simple in process.

[0021] 2. File outbound operation: The present invention only needs to insert the files to be outbound from the positioning socket of the sensing device to complete the outbound operation, without the need to use external RFID identification equipment, which is time-saving, efficient and simple in process.

[0022] 3. File label recognition: It has a filtering function for interfering labels in the environment. The inventory recognition of archives entering the warehouse can be carried out with the compartment door open, which can ensure accurate recognition of target labels without paying special attention to the storage locations of other labels to be identified in the surrounding environment.

[0023] 4. File inventory operation: It can independently count specific compartments in the cabinet, which can effectively avoid the problem of abnormal data update caused by incomplete inventory. The inventory efficiency is high and the accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 : Schematic diagram of the overall structure of the intelligent filing cabinet.

[0025] Figure 2 : Schematic diagram of the structure of the left compartment of the second layer of the intelligent file cabinet in Example 1.

[0026] Figure 3: Another structural schematic diagram of the left compartment of the second layer of Example 1.

[0027] Figure 4 : Figure 3 A magnified schematic diagram of the local structure.

[0028] Figure 5 : Schematic diagram of label recognition results after the file is inserted into the No. 10 sensor on the left side of the second layer of the intelligent file cabinet in Example 1.

[0029] Figure 6 : Schematic diagram of the secondary filtering results of the label after the file is inserted into the No. 10 sensor on the left side of the second layer of the intelligent file cabinet in Example 1.

[0030] Figure 7 : Schematic diagram of the result of binding the label and position after the file is inserted into the No. 10 sensor on the left side of the second layer of the intelligent file cabinet in Example 1.

[0031] Figure 8 : Schematic diagram of the overall structure of the intelligent filing cabinet.

[0032] Fig. 9 : Schematic diagram of the right compartment on the third layer of the intelligent filing cabinet in Example 2.

[0033] Fig.10 : Fig. 9 A magnified schematic diagram of the local structure.

[0034] Fig.11 : Schematic diagram of label recognition results after the file is inserted into sensor No. 150 on the right side of the third layer of the smart filing cabinet.

[0035] Fig.12 : Schematic diagram of the secondary filtering results of the label after the file is inserted into the sensor No. 150 on the right side of the third layer of the smart filing cabinet.

[0036] Fig.13 : Schematic diagram of the binding result of label and position after the file is inserted into sensor No. 150 on the right side of the third layer of the smart filing cabinet.

[0037] Fig.14 : Schematic diagram of the binding data update results after the sensor file No. 50 is pulled out.

[0038] Fig.15 : Schematic diagram of inventory result update in conventional way.

[0039] Fig.16 : Schematic diagram of inventory result update based on the tag and location binding relationship mechanism.

[0040] Description of labels: 1: Smart filing cabinet; 11: Compartment; 12: UHF RFID antenna; 13: Positioning jack; 14: Indicator light; 2: Smart filing cabinet; 21: Compartment; 22: First UHF RFID antenna; 23: Second UHF RFID antenna; 24: Third UHF RFID antenna; 25: Fourth UHF RFID antenna; 26: Positioning jack; 27: Indicator light. DETAILED DESCRIPTION

[0041] The present invention is described in detail below with reference to the accompanying drawings and embodiments. Example 1

[0042] like Figure 1-4 As shown, the smart file cabinet 1 of this embodiment has 5 layers, each layer is divided into left and right sides, each side is a compartment, and there are 10 compartments in total. A UHF RFID antenna is installed on the top surface of each compartment, and 100 sensors are installed in front of each compartment, as well as indicator lights corresponding to each sensor one by one, such as the 10th sensor (not shown in the figure) corresponds to the 10th indicator light 14, and the UHF RFID reader (not shown in the figure) is installed on the top of the cabinet of the smart file cabinet 1. The management terminal is the upper computer control software, and the file unit is a file bag, and the file bag is affixed with an UHF RFID tag. The specific method is: A method for quickly accessing and removing archives based on an ultra-high frequency RFID identification and filtering algorithm comprises the following steps: S1: UHF RFID card reader detects the positioning socket status of each sensor in real time When the UHF RFID reader detects that the positioning plug of the file bag is inserted into the positioning jack 13 of the 10th sensor in the left compartment 11 of the second layer of the smart file cabinet 1 numbered 01, the UHF RFID reader turns on the UHF RFID antenna 12 on the left of the second layer to perform inventory, and then compares the counted tag data with the historical binding information of the entire current compartment 11. It is not required to count all the inventory tags. As long as the incremental UHF RFID tag data is screened out, the inventory is ended. Otherwise, the power of the UHF RFID antenna 12 is gradually increased and the inventory is performed again. This cycle is repeated until the incremental tag is screened out or the inventory is timed out, and the inventory is ended. The newly added UHF RFID tag is for the newly added file, and the remaining UHF RFID antennas are not turned on, that is, the inventory is not performed.

[0043] This innovative inventory method is different from the conventional inventory method (putting in a UHF RFID tag, all UHF RFID antennas in the entire layer are all counted, and all inventory tags need to be counted). This saves power consumption and time for inventory and improves the efficiency of file storage. All UHF RFID antennas are not turned on by default, and their turning on operation is determined by the control program inside the UHF RFID reader, and the rules are preset in the control program.

[0044] S2: Filter data using the signal strength RSSI value of the UHF RFID tag When the file bag is put into storage, due to the large readability of the UHF RFID tag, the UHF RFID antenna 12 on the left side of the second layer may read the UHF RFID tag information in the current compartment 11 and / or on the operator's hand. Figure 5 As shown, in this embodiment, the operator actually inserted the file bag with UHF RFID tag A, but the UHF RFID antenna 12 on the left side of the second layer not only reads the information of UHF RFID tag A, but also reads the information of UHF RFID tag B, UHF RFID tag C, UHF RFID tag D and UHF RFID tag E. In this case, it is difficult to determine which is a valid UHF RFID tag, and thus the file storage operation cannot be carried out smoothly. Therefore, it is necessary to filter the read RFID tags, and the specific method is as follows: First, all the UHF RFID tags read need to be filtered at the first level, that is, the deduplication operation. Specifically, the UHF RFID reader compares all the UHF RFID tags identified with the local historical inventory UHF RFID tag information stored, removes duplicate UHF RFID tags, and obtains incremental UHF RFID tags. As in this embodiment, the UHF RFID reader has identified UHF RFID tags A, B, C, D and E, and the UHF RFID reader's local history inventory has UHF RFID tags E, O and P. After comparison, it is found that the UHF RFID tag E is duplicated, so it needs to be removed, and finally the incremental UHF RFID tags A, B, C and D are obtained.

[0045] Secondly, since there are four incremental UHF RFID tags, which are not unique, a second level of filtering is required, specifically: The incremental UHF RFID tags A, B, C and D are sorted according to the average values ​​of their respective signal strength RSSIs, and the UHF RFID tag with the largest average value of signal strength RSSI is obtained and retained, and the rest are filtered out.

[0046] Under normal circumstances, the distance between the file tag inserted in the left compartment 11 of the second layer and the UHF RFID antenna 12 in the compartment will be much smaller than the distance between the interference tag outside the compartment 11 and the UHF RFID antenna 12 in the compartment, and the corresponding RSSI average value will also be greater than the RSSI average value of the external tag.

[0047] In this embodiment, the UHF RFID tag A is inserted into the left compartment 11 of the second layer, and the UHF RFID tags B, C, and D are outside the left compartment 11 of the second layer. Then, under normal circumstances, the RSSI average value of the UHF RFID tag A will be greater than the RSSI average value of the UHF RFID tags B, C, and D.

[0048] Through the test, as follows Figure 6 As shown, the RSSI average value of UHF RFID tag A is -10dB, the RSSI average value of UHF RFID tag B is -33dB, the RSSI average value of UHF RFID tag C is -26dB, and the RSSI average value of UHF RFID tag D is -50dB.

[0049] The tag actually inserted into the file bag is UHF RFID tag A, and its RSSI value is the largest among the four tags. Therefore, according to the average value of signal strength RSSI, it can be accurately screened out that the inserted file tag is UHF RFID tag A, and the remaining UHF RFID tags B, C, and D are all invalid tags and are all filtered out.

[0050] S3: Archive storage like Figure 7 As shown, the UHF RFID reader binds the UHF RFID tag A screened in step S2 to the position of the 10th sensor one by one, generates binding information, updates the local historical database data, and the local historical data is stored in the UHF RFID reader. Finally, the binding information is sent to the host computer management software, and the host computer management software will also be updated accordingly to complete the warehousing operation.

[0051] The following further explains the purpose of the binding relationship in this step: The tag value (UHF RFID tag A) of this entry is bound to the position of the 10th sensor, and this binding relationship is then updated to the historical inventory information on the left side of this layer (i.e., the 2nd layer). In this way, the historical inventory information on the left side of this layer will increase.

[0052] The next time a new UHF RFID tag is placed to trigger an inventory count, the data counted this time will be compared with the historical inventory information. For example, the tag values ​​read in this inventory count are UHF RFID tags A, B, C, D, E, and F, and UHF RFID tags A, B, C, D, and E are all previously bound UHF RFID tags (because these UHF RFID tags have been put into storage and placed in the left bin of this layer, so there is a possibility of being counted). After data comparison, F is selected as the incremental tag, which is the tag placed this time.

[0053] Effects of this embodiment: 1. In this embodiment, the storage operation is completed by simply inserting the file bag to be stored into the positioning hole of any sensor, without the need to use an external RFID identification device, which is time-saving and has a simple process.

[0054] 2. It has a filtering function for interference tags in the environment, which can ensure accurate identification of target tags without considering the surrounding environment. Example 2

[0055] like Figure 8-10 As shown, the smart filing cabinet 2 of this embodiment is provided with 5 layers, each layer is divided into two sides, each side is a compartment, and there are 10 compartments in total. Four UHF RFID antennas are installed in each compartment, and 150 sensors are installed in front of each compartment, as well as indicator lights corresponding to each sensor one by one, such as the 150th sensor (not shown in the figure) corresponds to the 150th indicator light 27), and an UHF RFID card reader (not shown in the figure) is installed on the top of the cabinet body of the smart filing cabinet 2. The management terminal is the upper computer control software, and the file unit is a file bag, and an UHF RFID tag is attached to the file bag.

[0056] In this embodiment, the four UHF RFID antennas in the right compartment 21 of the third layer are respectively a first UHF RFID antenna 22, a second UHF RFID antenna 23, a third UHF RFID antenna 24 and a fourth UHF RFID antenna 25.

[0057] A method for quickly accessing and removing archives based on an ultra-high frequency RFID identification and filtering algorithm comprises the following steps: S1: UHF RFID card reader detects the positioning socket status of each sensor in real time When the UHF RFID reader detects that the positioning plug of the file bag is inserted into the positioning jack 26 of the 150th sensor in the right compartment 21 of the third layer of the intelligent filing cabinet 2 numbered 02, the UHF RFID reader only turns on the antenna adjacent to the position of the 150th sensor to perform inventory, that is, only turns on the third UHF RFID antenna 24 and the fourth UHF RFID antenna 25 to perform inventory (because the position of the 150th sensor is between the third UHF RFID antenna 24 and the fourth UHF RFID antenna 25), so that only a part of the UHF RFID tag data within the range of the compartment 21 will be counted, and we only need the data counted (including the newly placed UHF RFID tag), and then compare the counted tag data with the historical binding information of the entire current compartment 21, filter out the incremental UHF RFID tag data, and then end the inventory, otherwise gradually increase the antenna power, and perform the inventory again, and so on until the incremental tag is filtered out or the inventory timeout ends. The newly added UHF RFID tag is for the newly added file, and the other UHF RFID antennas are not turned on, that is, the inventory is not performed. This innovative inventory method is different from the conventional inventory method (putting in a UHF RFID tag and counting all antennas on the entire layer), which saves power consumption and time for inventory and improves the efficiency of file storage. The UHF RFID antenna is not turned on by default, and its opening operation is determined by the control program inside the UHF RFID reader, and its rules have been preset in the control program.

[0058] S2: Filter data using the signal strength RSSI value of the UHF RFID tag When the file bag is put into storage, due to the large readability range of the UHF RFID tag, the third UHF RFID antenna 24 and the fourth UHF RFID antenna 25 may read the UHF RFID tag information in the current compartment 21 and / or in the operator's hand.

[0059] like Fig.11 As shown, in this embodiment, the operator actually inserted a file bag with UHF RFID tag F, but the third UHF RFID antenna 24 and the fourth UHF RFID antenna 25 not only read UHF RFID tag F, but also read UHF RFID tag G, UHF RFID tag H, UHF RFID tag I and UHF RFID tag J. In this case, it is difficult to determine which is a valid UHF RFID tag, so the file storage operation cannot be carried out smoothly. It is necessary to filter the identified UHF RFID tags. The specific method is: First, all the read UHF RFID tags need to be filtered at the first level, that is, the deduplication operation. Specifically, the UHF RFID reader compares all the identified RFID tags with the local historical inventory RFID tag information stored, removes duplicate UHF RFID tags, and obtains incremental UHF RFID tags. As in this embodiment, the UHF RFID reader has identified UHF RFID tags F, G, H, I and J, and the UHF RFID reader's local historical inventory has UHF RFID tags E, O, P. Since there are no duplicate UHF RFID tags, the incremental tags obtained are UHF RFID tags F, G, H, I and J.

[0060] Secondly, since there are five incremental UHF RFID tags, which are not unique, a second level of filtering is required, specifically: The incremental UHF RFID tags F, G, H, I and J are sorted according to the average values ​​of their respective signal strength RSSIs, and the UHF RFID tag with the largest average value of signal strength RSSI is obtained and retained, and the rest are filtered out.

[0061] In actual applications, the distance between the file tag inserted in the right compartment 21 of the third layer and the UHF RFID antenna in the compartment will be much smaller than the distance between the interference tag outside the compartment 21 and the UHF RFID antenna in the compartment, and the corresponding RSSI average value will also be greater than the RSSI average value of the external tag. However, in actual operation, occasionally the RSSI average value of the inserted target file tag is the same as the RSSI average value of the file tag to be put on the shelf in the operator's hand and is the maximum RSSI average value.

[0062] like Fig.12 As shown, the UHF RFID tag F is inserted into the right compartment 21 of the third layer, and the UHF RFID tags G, H, I, and J are outside the right compartment of the third layer. The RSSI value of the UHF RFID tag F is -11dB, the RSSI value of the UHF RFID tag G is -32dB, the RSSI value of the UHF RFID tag H is -28dB, the RSSI value of the UHF RFID tag I is -65dB, and the RSSI value of the UHF RFID tag J is -11dB.

[0063] Since the RSSI average values ​​of UHF RFID tags G, H, and I are not the maximum average values, they are all invalid tags and are all filtered out. In this embodiment, the tag actually inserted into the file bag is UHF RFID tag F, but since the RSSI average values ​​of UHF RFID tags F and J are the same and both are the maximum, it is necessary to enter the third level of filtering, specifically: the upper computer control software displays the information of UHF RFID tags F and J on the screen of the intelligent filing cabinet 2, and the operator is required to select one of them as the UHF RFID tag value finally inserted into the file unit, that is, manually select UHF RFID tag F as a valid tag, and filter out UHF RFID tag J, and finally obtain high-frequency RFID tag F after filtering, and end all filtering module operations to enter the next step of file storage.

[0064] S3: Archive storage like Fig.13 As shown, the UHF RFID tag F is bound to the position of the 150th sensor (the purpose of binding is the same as that of the above-mentioned embodiment 1), and the binding information is sent to the UHF RFID reader; after receiving the binding information, the UHF RFID reader updates its internal binding data and sends the binding information to the host computer management software, which binds the 150th sensor to the UHF RFID tag F after receiving the information. At this time, the data on the UHF RFID reader end and the data on the host computer management software end are synchronized once, thereby completing the storage operation of the file bag of the UHF RFID tag F.

[0065] Effects of this embodiment: This embodiment can accurately identify valid tags through a three-level filtering method and realize one-to-one binding between sensors and tags. Example 3

[0066] The difference from Example 2 is that 200 sensors are installed in front of each compartment, and indicator lights corresponding to each sensor are installed one by one. In this example, the 50th sensor is bound to the file bag labeled with the ultra-high frequency RFID tag K. This example also includes step S4: out of the warehouse, the specific method is: like Fig.14 As shown, when the UHF RFID card reader detects that the positioning plug in the 50th sensor is unplugged, the information is reported to the upper computer management software, and the upper computer management software unbinds the UHF RFID tag K data information bound to the 50th sensor and updates it to the outbound state. The UHF RFID card reader also unbinds the UHF RFID tag K data information bound to the 50th sensor. At this time, the data of the UHF RFID card reader and the upper computer management software are synchronized once, and the archive is out of the warehouse.

[0067] Note that the unbinding in this embodiment actually clears the UHF RFID tag data that binds the historical inventory information to the sensor location, so that after the file bag is pulled out, the tag value does not exist in the historical inventory information, so that there is no need for inventory when leaving the warehouse, and accurate results can be output quickly. If the UHF RFID tag is put in later, because the UHF RFID tag does not exist in the historical inventory information, it will eventually be compared as a new tag.

[0068] Therefore, in this embodiment, when the archive is released from the warehouse, the data of the label can be updated without performing an inventory, thereby improving the efficiency of the archive release. Example 4

[0069] The only difference from Example 3 is that it also includes a query method, specifically: Input the file information to be queried on the upper computer management software, such as the data information of the UHF RFID tag F. After the UHF RFID card reader receives the information, it controls the compartment where the file bag with the UHF RFID tag F is located to open automatically, and the indicator light of the sensor at the corresponding position lights up for guidance. This embodiment realizes the precise positioning of the file bag. Example 5

[0070] When performing file storage, the existing technology does not bind the files to the sensors one by one, but directly compares the data of the new round of inventory with the data of the previous round of inventory (i.e., historical inventory data), and the changed label data is judged as the new file label data. However, as more and more labels are inserted, there may be a problem of incomplete inventory in one round of inventory. Fig.15 As shown, for example, if file A in the warehouse is not counted in this round of inventory, then file A is determined to be a newly-released file, but in fact, file A is in the warehouse, and the problem of file data confusion will occur. Based on this, the only difference between this embodiment and embodiment 4 is that it also includes an inventory method, which is specifically: like Fig.16 As shown, in the present embodiment, when executing step S3 of warehousing, it is necessary to bind the files to the sensor positions one by one. In this way, in a new round of inventory, even if the file F already in the warehouse with the UHF RFID tag F is not counted in this round of inventory, it can be ignored after comparing with the historical binding information, that is, the file F is not considered to be a newly-out-of-warehouse file, but an already-in-warehouse file, thereby avoiding the confusion of file data caused by the characteristic that the UHF RFID tag may not be fully counted.

[0071] The applicant also needs to explain that the ultra-high frequency RFID tag in the above embodiment may also be a high frequency RFID tag.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Therefore, although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified or replaced by equivalents. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The fast file access system based on UHF RFID identification and filtering algorithm is characterized by: include: A smart cabinet, wherein the smart cabinet has multiple layers, each layer has two sides, each side is a compartment, and the compartment is used to store file units; A management terminal, connected to the smart cabinet for communication; A card reader device, the card reader device is installed on the smart cabinet; There is at least one UHF RFID antenna in each compartment; A plurality of sensing devices, each of which is installed on each layer of the smart cabinet, and each of which is provided with a positioning socket for connecting to a positioning plug on the archive unit; When there is only one UHF RFID antenna, the card reader turns on only the unique UHF RFID antenna within the area corresponding to the positioning socket when the file unit is inserted into the area, and obtains the RFID tag identifying the file unit through the UHF RFID antenna; When there are multiple UHF RFID antennas, the card reader turns on the adjacent UHF RFID antenna according to the file unit inserted into the positioning socket, and obtains the RFID tag identifying the file unit through the adjacent UHF RFID antenna; The card reader device identifies whether the file unit is currently on the sensing device through the state of the positioning socket of the sensing device; The filtering module includes a first-stage filtering module, a second-stage filtering module and a third-stage filtering module in sequence. First-level filtering module: the card reader compares all the identified RFID tags with the stored local historical inventory RFID tag information, removes duplicate RFID tags, and obtains incremental RFID tags; If the incremental RFID tag is unique, the incremental RFID tag is the RFID tag value finally inserted into the archive unit; If the incremental RFID tag is not unique, it is necessary to enter the second-level filtering module; Second-stage filtering module: sort all the incremental RFID tags according to their respective signal strength RSSI values ​​to obtain the RFID tag with the maximum signal strength RSSI value, and the RFID tag with the maximum RSSI value is the filtered RFID tag finally output by the second-stage filtering module; If the filtering RFID tag is unique, the filtering RFID tag is the RFID tag value finally inserted into the archive unit, and the filtering module operation is ended and the storage module operation is entered; If the filtering RFID tag is not unique, enter the third level filtering module; Third-level filtering module: If the filtered RFID tag output after filtering by the second-level filtering module is not unique, human intervention is required to select one as the RFID tag value finally inserted into the archive unit, and all filtering module operations are terminated, and the next step of storage module operation is entered; In the storage module, the card reader binds the RFID tags obtained after filtering by the filtering module to the sensing devices one by one, updates their local data, and then sends the binding information to the management terminal for updating, completing the synchronization operation, thereby completing the file storage.

2. The fast archive access system based on ultra-high frequency RFID identification and filtering algorithm according to claim 1 is characterized in that: It also includes an outbound module: after the card reader detects that the file unit in the sensing device is pulled out, it reports the information to the management terminal, and the management terminal unbinds the binding relationship between the file unit and the sensing device and updates it to an outbound status. The card reader also unbinds the binding relationship between the file unit and the sensing device to complete the file outbound.

3. The fast archive access system based on ultra-high frequency RFID identification and filtering algorithm according to claim 1 is characterized in that: It also includes an inventory module: when executing a new round of inventory, the relevant UHF RFID antenna is started for identification to obtain the RFID tag data results of this round of inventory.

4. The fast archive access system based on ultra-high frequency RFID identification and filtering algorithm according to claim 1 is characterized in that: It also includes a query module: by inputting the file information to be queried on the management terminal, the door of the compartment where the file to be queried is located can be controlled to open automatically, and the indicator light of the sensing device at the corresponding position will light up for guidance.

5. A method for fast storage and retrieval of archives based on ultra-high frequency RFID identification and filtering algorithm, characterized in that: The application of the archive rapid access system based on the ultra-high frequency RFID identification and filtering algorithm as claimed in claim 1 comprises the following steps: S1: The card reader detects the positioning socket status of the sensing device in real time When the card reader detects that the positioning plug of the file unit is inserted into the positioning socket of the sensing device, the card reader only turns on the UHF RFID antenna in the area where the sensor is located, and reads and identifies the RFID tag data information through the UHF RFID antenna; S2: Filter data using the signal strength RSSI value of the RFID tag First-level filtering: the card reader compares all the identified RFID tags with the stored local historical inventory RFID tag information, removes duplicate RFID tags, and obtains incremental RFID tags; If the incremental RFID tag is unique, the incremental RFID tag is the RFID tag value finally inserted into the archive unit, the filtering operation is ended, and the process proceeds to step S3 for storage operation; If the incremental RFID tag is not unique, it is necessary to enter the second level of filtering; Second-level filtering: sorting all the incremental RFID tags according to their respective signal strength RSSI values ​​to obtain the RFID tag with the maximum signal strength RSSI value, and the RFID tag with the maximum RSSI value is the filtered RFID tag finally output by the second-level filtering module; If the filtering RFID tag is unique, the filtering RFID tag is the RFID tag value finally inserted into the archive unit, and the filtering operation is ended, and the process proceeds to step S3 for storage operation; If the filtering RFID tag is not unique, the third level of filtering is performed; Third-level filtering: If the filtered RFID tag output after the second-level filtering process is not unique, human intervention is required to select one as the RFID tag value finally inserted into the archive unit, and all filtering operations are terminated, and the storage operation is entered into step S3; S3: Archive storage The card reader binds the RFID tags selected in step S2 to the positions of the sensing devices one by one, generates binding information, updates the local data of the card reader, and sends it to the management terminal to achieve data synchronization and complete the file storage.

6. The method for fast access to and from archives based on ultra-high frequency RFID identification and filtering algorithm according to claim 5 is characterized in that: The step S1 of the card reader detecting the positioning socket state of the sensing device in real time also includes: If multiple UHF RFID antennas are installed on each layer of the smart cabinet, when the card reader detects that the positioning plug of the file unit is inserted into the positioning socket of the sensing device, the card reader only turns on the UHF RFID antenna adjacent to the area where the sensor is located, and the UHF RFID antenna starts to read the RFID tag data information.

7. The method for fast access to and from archives based on ultra-high frequency RFID identification and filtering algorithm according to claim 5 is characterized in that: It also includes step S4: archive out of the library; When the card reader detects that the positioning plug in a certain sensing device is unplugged, the information is reported to the management terminal. The management terminal unbinds the RFID tag data information bound to the sensing device and updates it to the outbound status. The card reader also unbinds the RFID tag data information bound to the sensing device. At this time, the data of the card reader and the management terminal are synchronized to complete the file outbound.

8. The method for fast access to and from archives based on ultra-high frequency RFID identification and filtering algorithm according to claim 5 is characterized in that: It also includes query methods, specifically: By inputting the file information to be queried on the management terminal, the door of the compartment where the file to be queried is located can be controlled to open automatically, and the indicator light of the sensor device at the corresponding position will light up for guidance.

9. The method for fast access to and from archives based on ultra-high frequency RFID identification and filtering algorithm according to claim 5 is characterized in that: It also includes inventory methods, specifically: When a new round of inventory is carried out after executing step S3, the relevant ultra-high frequency RFID antenna is started for identification to obtain the RFID tag data results of this round of inventory.

10. The method for fast storage and retrieval of archives based on ultra-high frequency RFID identification and filtering algorithm according to claim 5 is characterized in that: The RSSI value is an RSSI average value.

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