CN109308772B - RFID technology-based library book checking system and checking method thereof - Google Patents
RFID technology-based library book checking system and checking method thereof Download PDFInfo
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- CN109308772B CN109308772B CN201710620074.9A CN201710620074A CN109308772B CN 109308772 B CN109308772 B CN 109308772B CN 201710620074 A CN201710620074 A CN 201710620074A CN 109308772 B CN109308772 B CN 109308772B
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/0036—Checkout procedures
- G07G1/0045—Checkout procedures with a code reader for reading of an identifying code of the article to be registered, e.g. barcode reader or radio-frequency identity [RFID] reader
- G07G1/009—Checkout procedures with a code reader for reading of an identifying code of the article to be registered, e.g. barcode reader or radio-frequency identity [RFID] reader the reader being an RFID reader
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- G—PHYSICS
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Abstract
The invention provides a library book checking system based on an RFID technology and a checking method thereof, wherein the system comprises a book searching reader, a book electronic tag, an antenna, a machine trolley, an upper computer and a library database system; on a library bookshelf, all books are pasted with a book electronic tag with a unique identifier, a book search reader and an antenna are placed on a machine trolley, the antenna is installed on a fixed rod on the machine trolley, a device capable of driving up and down is installed on the fixed rod, a control unit on the trolley controls the starting of the trolley and the transmission device on the fixed rod, and the control unit is also connected with the book search reader through a USB (universal serial bus) line; when the dolly went on the bookshelf pavement, books search and read ware and pass through antenna detection books electronic tags to the data that will acquire pass through wireless transmission module and pass to the host computer, the host computer is with these data storage to the database system of collection again in, through data processing and location, the removal orbit of real-time display antenna simultaneously.
Description
Technical Field
The invention relates to the field of library automatic management, in particular to a library book checking system based on an RFID technology and a checking method thereof.
Background
With the development of society, the amount of information is continuously expanding, and due to the requirement of information sharing, a more perfect information solution is always sought in the library world. Similarly, for enterprises or institutions such as logistics centers, libraries, archives, and museums, it is necessary to effectively collect and manage items stored therein, such as goods, books, archives, exhibits, and the like. The use of non-human intervention to manage these items helps to increase efficiency and reduce human loss, and therefore has a greater application demand. With the widespread use of modern technologies in the field of libraries, a new type of radio frequency identification technology is gradually replacing the barcode identification technology widely used in libraries for many years with its unique advantages.
RFID is an abbreviation of Radio Frequency Identification, i.e., Radio Frequency Identification technology. It can identify specific target and read and write related data by radio signal, and has no need of establishing mechanical or optical contact between identification system and specific target, and can be used in various severe environments.
In recent years, the RFID technology has been rapidly developed in China, and has been widely applied to various fields such as industrial automation, commercial automation, transportation control management, and the like, for example: commodity inventory, logistics management (timely tracking the position, quantity and other information of commodities according to label content and application system information), ETC road and bridge non-stop charging system, access control system, financial transaction, vehicle theft prevention and the like, and the general application of RFID technology will be an unblocked trend.
With the further improvement of the technology and the wide promotion of the application, the cost of Radio Frequency Identification (RFID) products is rapidly reduced, an industry chain driven by the RFID products becomes a new technology industry group, and the construction of a support environment based on the Radio Frequency Identification (RFID) technology has wide influence on the promotion of social informatization level, the promotion of economic sustainable development, the improvement of the quality of life of people, the enhancement of public safety and national defense safety and the like. The technology and the principle of the library book checking system based on the RFID technology bring revolutionary changes to the field of library automatic management and the field of management of other articles such as archives, warehouses and the like.
Disclosure of Invention
The invention provides a library book checking system based on RFID technology, which can realize scanning of all books of a library with the lowest possible cost.
The invention further aims to provide an inventory method of a library book inventory system based on the RFID technology.
In order to achieve the technical effects, the technical scheme of the invention is as follows:
a library book checking system based on RFID technology comprises a book search reader, a book electronic tag, an antenna, a machine trolley, an upper computer and a library database system; on a library bookshelf, all books are pasted with a book electronic tag with a unique identifier, a book search reader and an antenna are placed on a machine trolley, the antenna is installed on a fixed rod on the machine trolley, a device capable of driving up and down is installed on the fixed rod, a control unit on the trolley controls the starting of the trolley and the transmission device on the fixed rod, and the control unit is also connected with the book search reader through a USB (universal serial bus) line; when the dolly went on the bookshelf pavement, books search and read ware and pass through antenna detection books electronic tags to the data that will acquire pass through wireless transmission module and pass to the host computer, the host computer is with these data storage to the database system of collection again in, through data processing and location, the removal orbit of real-time display antenna simultaneously.
Furthermore, the antenna is arranged on a transmission device of a fixed rod of the machine trolley, the left antenna and the right antenna move up and down all the time, the actual track of the antenna is in a zigzag shape in the checking process, and energy is saved to the maximum degree on the premise that all books on the bookshelf can be detected.
Further, the upper computer obtains the distance between the machine trolley and the two sides of the trolley according to the received signal strength indication of the labels on the two sides of the detection bookshelf, and sends the information to the trolley control unit, so that the position of the trolley is dynamically adjusted.
Furthermore, the upper computer can display the track of the antenna on a display interface of the upper computer in real time by utilizing the data acquired by the reader through data processing and positioning; the machine trolley dynamically adjusts the position in the running process, can realize autonomous turning, and does not need manual participation in the whole process.
A library book checking method of a library book checking system based on an RFID technology comprises the following steps:
s1: book electronic tags all posts books in the library, number the bookshelf, and the book information on every bookshelf of record, and simultaneously, use the bookshelf to be the plane, the lower left corner of bookshelf establishes the coordinate system for the initial point, the coordinate position of every book of record, write into library database system as standard database with these data information, be convenient for solve books in a confused state of mind and set aside the problem in the future, in scanning process, the dolly probably walks partially, go forward near the intermediate position of two rows of bookshelves for making the dolly all the time, the signal strength instruction through the receipt of the label on two sides of detection bookshelf seeks the distance of machine dolly distance both sides, and then dynamic adjustment dolly position, specific conversion model is as follows:
wherein d is0As a reference distance, RSSI0Is a distance d0The method comprises the steps that the intensity of a received signal is measured, d is a real distance, RSSI is the intensity of the received signal when the distance is d, xi is an environment factor, is irrelevant to the distance and mainly relevant to the environment where an obstruction in the environment is located, eta is a path loss index, and in different environments, a transmission path can be changed, so that the parameter is adjusted when the environment is changed;
before checking and scanning, the distance between the reader and the bookshelf is 0.3m,Detecting books on the bookshelf at 0.5m and 0.7m, respectively obtaining RSSI of the labels, and then using d00.5, corresponding to a signal strength of RSSI0Substituting the formula (1) into the formula (1), solving two parameters, and establishing a conversion model;
s2: placing a machine trolley in the middle of the starting points of the two rows of bookshelves, placing the antenna on the left in the lowest position of the transmission device, placing the antenna on the right in the highest position, then starting a book searching reader to detect, then starting the trolley, starting the transmission device simultaneously and performing up-and-down transmission, slowly raising the antenna on the left, slowly lowering the antenna on the right, then driving the trolley forwards at a proper speed, and setting the speed of the transmission device up and down as vh，vhThe size of the antenna is related to the recognition speed of the reader and the number of books on the bookshelf, the maximum height of the vertical movement is h, and the time t required by the antenna from the highest position to the lowest position is h/vhThe recognition range of the antenna is r, the advancing speed is
Therefore, the antenna is ensured to scan according to a zigzag line under the condition that the antenna has speeds in the horizontal and vertical directions, all books on the bookshelf can be detected, and a specific positioning algorithm for observing the track of the antenna is as follows:
i. sorting and screening according to the RSSI values of the detected tags, and selecting 3-4 tags with the maximum corresponding RSSI values, wherein the tags cannot contain books which are not the bookshelf;
ii, according to the formula (1) in I, three distances d are obtained1，d2，d3；
According to the multi-circle positioning principle, then the following equations exist:
starting with the first equation, the last equation is subtracted, respectively, to yield:
the coordinates of the current antenna can be obtained by using a standard least mean square error estimation method as follows: x ═ ATA)-1ATb；
S3: during driving, the book searching reader continuously detects and scans books and stores data into another form of another library database system, when no label is detected or the number of the detected labels is lower than a certain threshold value, two rows of books are considered to be detected, the trolley needs to turn, the angle arc degree of the turning is set in advance, the turning direction is supposed to turn left for the first time, then the trolley turns right for the next time, the turning is alternated, the labels are detected after the turning, the position of the trolley is timely adjusted to ensure that the trolley advances at the middle position, checking is continued, two rows of bookshelves are scanned at each checking, the detected data are matched with the book information in the standard database, as long as the wrongly-placed and disorderly-placed books occur, the latest position of the book is recorded, when a reader retrieves the wrongly-placed and disorderly-placed books at a client, the latest information of the books can be improved by the system, meanwhile, a library manager can acquire the information of the books through the management system, timely adjustment is facilitated, when the trolley reaches the last row, only one row of books can be detected, the condition is used as a judgment ending condition, and the operation is finished after all the books in the row are scanned.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the system comprises a book search reader, a book electronic tag, an antenna, a machine trolley, an upper computer and a library database system; on a library bookshelf, all books are pasted with a book electronic tag with a unique identifier, a book search reader and an antenna are placed on a machine trolley, the antenna is installed on a fixed rod on the machine trolley, a device capable of driving up and down is installed on the fixed rod, a control unit on the trolley controls the starting of the trolley and the transmission device on the fixed rod, and the control unit is also connected with the book search reader through a USB (universal serial bus) line; when the trolley runs on the bookshelf walkway, the book searching reader detects the electronic tags of books through the antenna and transmits the acquired data to the upper computer through the wireless transmission module, the upper computer stores the data into the database system of the collection, and the moving track of the antenna is displayed in real time through data processing and positioning; the invention utilizes the characteristics that Radio Frequency Identification (RFID) equipment can quickly read book information in batch and in a long distance, and manual participation is not needed in the scanning process. The invention effectively solves the defects and realizes the scanning of all books in the library with the lowest possible cost.
Drawings
Fig. 1 is a block diagram of the system of the present invention, wherein 1 represents a machine cart, 2 represents a control unit, 3 represents a reader, 4 represents an antenna, 5 represents a fixed rod (with a transmission device that moves up and down), 6 represents a bookshelf, 7 represents a book with a tag attached, 8 represents an upper computer, and 9 represents a library database;
FIG. 2 is a flow chart of the method of the present invention;
fig. 3 is a coordinate system diagram.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, a library book checking system based on RFID technology includes a book search reader, a book electronic tag, an antenna, a machine cart, an upper computer, and a library database system; on a library bookshelf, all books are pasted with a book electronic tag with a unique identifier, a book search reader and an antenna are placed on a machine trolley, the antenna is installed on a fixed rod on the machine trolley, a device capable of driving up and down is installed on the fixed rod, a control unit on the trolley controls the starting of the trolley and the transmission device on the fixed rod, and the control unit is also connected with the book search reader through a USB (universal serial bus) line; when the dolly went on the bookshelf pavement, books search and read ware and pass through antenna detection books electronic tags to the data that will acquire pass through wireless transmission module and pass to the host computer, the host computer is with these data storage to the database system of collection again in, through data processing and location, the removal orbit of real-time display antenna simultaneously.
The antenna is installed on a transmission device of a fixed rod of the machine trolley and always keeps the left antenna and the right antenna moving up and down, and in the checking process, the actual track of the antenna is in a zigzag shape, so that energy is saved to the maximum degree on the premise of ensuring that all books on the bookshelf can be detected.
The upper computer obtains the distance between the machine trolley and the two sides according to the received signal strength indication of the labels on the two sides of the detection bookshelf, and sends the information to the trolley control unit so as to dynamically adjust the position of the trolley.
The upper computer can utilize the data acquired by the reader to display the track of the antenna on a display interface of the upper computer in real time through data processing and positioning; the machine trolley dynamically adjusts the position in the running process, can realize autonomous turning, and does not need manual participation in the whole process.
As shown in fig. 2, a library book checking method of a library book checking system based on an RFID technology includes the following steps:
s1: book electronic tags all posts books in the library, number the bookshelf, and the book information on every bookshelf of record, and simultaneously, use the bookshelf to be the plane, the lower left corner of bookshelf establishes the coordinate system for the initial point, the coordinate position of every book of record, write into library database system as standard database with these data information, be convenient for solve books in a confused state of mind and set aside the problem in the future, in scanning process, the dolly probably walks partially, go forward near the intermediate position of two rows of bookshelves for making the dolly all the time, the signal strength instruction through the receipt of the label on two sides of detection bookshelf seeks the distance of machine dolly distance both sides, and then dynamic adjustment dolly position, specific conversion model is as follows:
wherein d is0As a reference distance, RSSI0Is a distance d0The method comprises the steps that the intensity of a received signal is measured, d is a real distance, RSSI is the intensity of the received signal when the distance is d, xi is an environment factor, is irrelevant to the distance and mainly relevant to the environment where an obstruction in the environment is located, eta is a path loss index, and in different environments, a transmission path can be changed, so that the parameter is adjusted when the environment is changed;
before checking and scanning, detecting books on the bookshelf at positions 0.3m, 0.5m and 0.7m away from the bookshelf respectively through a reader, respectively acquiring RSSI of the labels, and then using d00.5, corresponding to a signal strength of RSSI0Substituting the formula (1) into the formula (1), solving two parameters, and establishing a conversion model;
s2: placing a machine trolley in the middle of the starting points of the two rows of bookshelves, placing the antenna on the left in the lowest position of the transmission device, placing the antenna on the right in the highest position, then starting a book searching reader to detect, then starting the trolley, starting the transmission device simultaneously and performing up-and-down transmission, slowly raising the antenna on the left, slowly lowering the antenna on the right, then driving the trolley forwards at a proper speed, and setting the speed of the transmission device up and down as vh，vhThe size of the antenna is related to the recognition speed of the reader and the number of books on the bookshelf, the maximum height of the vertical movement is h, and the time t required by the antenna from the highest position to the lowest position is h/vhThe recognition range of the antenna is r, the advancing speed is
Therefore, the antenna is ensured to scan according to a zigzag line under the condition that the antenna has speeds in the horizontal and vertical directions, all books on the bookshelf can be detected, and a specific positioning algorithm for observing the track of the antenna is as follows:
i. sorting and screening according to the RSSI values of the detected tags, and selecting 3-4 tags with the maximum corresponding RSSI values, wherein the tags cannot contain books which are not the bookshelf;
ii, according to the formula (1) in I, three distances d are obtained1，d2，d3；
According to the multi-circle positioning principle, then the following equations exist:
starting with the first equation, the last equation is subtracted, respectively, to yield:
the coordinates of the current antenna can be obtained by using a standard least mean square error estimation method as follows: x ═ ATA)-1ATb；
S3: during driving, the book searching reader continuously detects and scans books and stores data into another form of another library database system, when no label is detected or the number of the detected labels is lower than a certain threshold value, two rows of books are considered to be detected, the trolley needs to turn, the angle arc degree of the turning is set in advance, the turning direction is supposed to turn left for the first time, then the trolley turns right for the next time, the turning is alternated, the labels are detected after the turning, the position of the trolley is timely adjusted to ensure that the trolley advances at the middle position, checking is continued, two rows of bookshelves are scanned at each checking, the detected data are matched with the book information in the standard database, as long as the wrongly-placed and disorderly-placed books occur, the latest position of the book is recorded, when a reader retrieves the wrongly-placed and disorderly-placed books at a client, the latest information of the books can be improved by the system, meanwhile, a library manager can acquire the information of the books through the management system, timely adjustment is facilitated, when the trolley reaches the last row, only one row of books can be detected, the condition is used as a judgment ending condition, and the operation is finished after all the books in the row are scanned.
As shown in fig. 3, a coordinate system diagram is established for each bookshelf. In order to visually observe the motion track of the antenna, the system combines the RFID technology to position the antenna in real time and display the track on a corresponding interface. As shown in the figure, the coordinate position of each book is recorded by taking the lower left corner of each bookshelf as the origin, the horizontal direction as the x axis of a coordinate system and the vertical direction as the y axis. The trolley has a forward speed, and the transmission device moves at a speed in the vertical direction, so that the ideal movement track of the antenna is in a sawtooth shape.
The same or similar reference numerals correspond to the same or similar parts;
the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (4)
1. A library book checking method of a library book checking system based on an RFID technology comprises a book search reader, a book electronic tag, an antenna, a machine trolley, an upper computer and a library database system; on a library bookshelf, all books are pasted with a book electronic tag with a unique identifier, a book search reader and an antenna are placed on a machine trolley, the antenna is installed on a fixed rod on the machine trolley, a device capable of driving up and down is installed on the fixed rod, a control unit on the trolley controls the starting of the trolley and the transmission device on the fixed rod, and the control unit is also connected with the book search reader through a USB (universal serial bus) line; when the dolly went at the bookshelf pavement, books search and read ware and pass through antenna detection books electronic tags to the host computer is passed through wireless transmission module with the data of acquireing, and the host computer is again with these data storage to the database system of collection in, through data processing and location simultaneously, the removal orbit of real-time display antenna, its characterized in that includes following step:
s1: book electronic tags all posts books in the library, number the bookshelf, and the book information on every bookshelf of record, and simultaneously, use the bookshelf to be the plane, the lower left corner of bookshelf establishes the coordinate system for the initial point, the coordinate position of every book of record, write into library database system as standard database with these data information, be convenient for solve books in a confused state of mind and set aside the problem in the future, in scanning process, the dolly probably walks partially, go forward near the intermediate position of two rows of bookshelves for making the dolly all the time, the signal strength instruction through the receipt of the label on two sides of detection bookshelf seeks the distance of machine dolly distance both sides, and then dynamic adjustment dolly position, specific conversion model is as follows:
wherein d is0As a reference distance, RSSI0Is a distance d0The method comprises the steps that the intensity of a received signal is measured, d is a real distance, RSSI is the intensity of the received signal when the distance is d, xi is an environment factor, is irrelevant to the distance and mainly relevant to the environment where an obstruction in the environment is located, eta is a path loss index, and in different environments, a transmission path can be changed, so that the parameter is adjusted when the environment is changed;
before checking and scanning, detecting books on the bookshelf at positions 0.3m, 0.5m and 0.7m away from the bookshelf respectively through a reader, respectively acquiring RSSI of the labels, and then using d00.5, corresponding to a signal strength of RSSI0Substituting the formula (1) into the formula (1), solving two parameters, and establishing a conversion model;
s2: placing the machine trolley in the middle of the starting points of the two rows of bookshelves, placing the antenna on the left in the lowest position of the transmission device, placing the antenna on the right in the highest position, then starting the book searching reader to detect, then starting the trolley, starting the transmission device simultaneously and performing up-and-down transmission, slowly raising the antenna on the left, slowly lowering the antenna on the right, then driving the trolley forwards at a proper speed, and setting the up-and-down speed of the transmission device as vh，vhThe size of the antenna is related to the recognition speed of the reader and the number of books on the bookshelf, the maximum height of the vertical movement is h, and the time t required by the antenna from the highest position to the lowest position is h/vhThe recognition range of the antenna is r, the advancing speed is
This ensures that the antenna is both horizontally and vertically orientedUnder the condition of speed, scanning is carried out according to a zigzag line, all books on the bookshelf can be detected, and a specific positioning algorithm for observing the track of the antenna is as follows:
i. sorting and screening according to the RSSI values of the detected tags, and selecting 3-4 tags with the maximum corresponding RSSI values, wherein the tags cannot contain books which are not the bookshelf;
ii, according to the formula (1) in I, three distances d are obtained1，d2，d3；
According to the multi-circle positioning principle, then the following equations exist:
starting with the first equation, the last equation is subtracted, respectively, to yield:
the coordinates of the current antenna can be obtained by using a standard least mean square error estimation method as follows: x ═ ATA)-1ATb；
S3: during driving, the book searching reader continuously detects and scans books and stores data in another form of the library database system, when no label is detected or the number of the detected labels is lower than a certain threshold value, two rows of books are considered to be detected, the trolley needs to turn, the angle arc degree of the turning is set in advance, the turning direction is supposed to turn left for the first time, then turn right for the next time, alternate in turn, the position of the trolley is timely adjusted by detecting the labels after turning, so as to ensure that the trolley advances at the middle position and continue inventory, two rows of bookshelves are scanned by each inventory, the detected data are matched with the book information in the standard database, as long as the books which are misplaced and misplaced are disorderly placed, the latest position of the book is recorded, when a reader retrieves the misplaced and disorderly placed books at a client, the system can improve the latest information of the books, meanwhile, a library manager can acquire the information of the books through the management system, timely adjustment is facilitated, when the trolley reaches the last row, only one row of books can be detected, the condition is used as a judgment ending condition, and the operation is finished after all the books in the row are scanned.
2. The method for checking books in a library of a book checking system based on RFID technology as claimed in claim 1, wherein the antenna is installed on a transmission device of a fixing rod of a machine trolley and always keeps the left and right antennas moving one above the other, and during the checking process, the actual track of the antenna is a zigzag shape, thereby saving energy to the maximum extent on the premise of ensuring that all books in the bookshelf can be detected.
3. The method for checking books in a library based on the RFID technology as claimed in claim 2, wherein the upper computer calculates the distance between the two sides of the cart according to the received signal strength indication of the tags on the two sides of the bookshelf, and sends the information to the cart control unit, thereby dynamically adjusting the cart position.
4. The library book checking method of the library book checking system based on the RFID technology as claimed in claim 3, wherein the upper computer displays tracks of the antennas on a display interface of the upper computer in real time through data processing and positioning by using data acquired by a reader; the machine trolley dynamically adjusts the position in the running process, can realize autonomous turning, and does not need manual participation in the whole process.
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| CN110717560A (en) * | 2019-09-17 | 2020-01-21 | 杭州电子科技大学 | Library book management system and method |
| CN111352422B (en) * | 2020-03-06 | 2023-04-28 | 陕西雷神智能装备有限公司 | Unmanned vehicle line inspection method and system based on self-learning radio frequency tag and unmanned vehicle |
| CN111273672B (en) * | 2020-03-06 | 2023-04-28 | 陕西雷神智能装备有限公司 | Unmanned aerial vehicle line inspection method and system based on known coordinate radio frequency tag and unmanned aerial vehicle |
| CN111324134B (en) * | 2020-03-06 | 2023-04-28 | 陕西雷神智能装备有限公司 | Unmanned vehicle line inspection method and system based on preset sequence radio frequency tags and unmanned vehicle |
| CN111814935B (en) * | 2020-08-27 | 2022-08-05 | 天津德沃尔智能科技有限公司 | Book positioning method based on checking robot |
| CN114654478B (en) * | 2022-04-12 | 2023-10-20 | 上海飒智智能科技有限公司 | Book checking method based on book checking robot |
| CN117315864B (en) * | 2023-11-29 | 2024-03-08 | 青岛中科力天网络科技有限公司 | AI wisdom library management system |
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