CN109512158B - RFID intelligent storage cabinet and application thereof - Google Patents
RFID intelligent storage cabinet and application thereof Download PDFInfo
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- CN109512158B CN109512158B CN201811126030.1A CN201811126030A CN109512158B CN 109512158 B CN109512158 B CN 109512158B CN 201811126030 A CN201811126030 A CN 201811126030A CN 109512158 B CN109512158 B CN 109512158B
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B63/00—Cabinets, racks or shelf units, specially adapted for storing books, documents, forms, or the like
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
- G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
- G06K7/10079—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions
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- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Toxicology (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
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Abstract
The invention relates to the technical field of radio frequency identification, in particular to an RFID intelligent storage cabinet and application thereof, and the RFID intelligent storage cabinet is characterized in that more than two transverse partition plates are arranged in a cabinet body, a radio frequency antenna group is arranged in each transverse partition plate, and a first radio frequency antenna group and a second radio frequency antenna group are respectively arranged in the adjacent transverse partition plates, wherein the first radio frequency antenna group consists of two rectangular antenna coils with the same specification, the two rectangular antenna coils are partially overlapped, and the two rectangular antenna coils are partially overlapped along the length direction of the antenna coils; the second radio frequency antenna group consists of two rectangular antenna coils with the same specification, and the two rectangular antenna coils are partially overlapped along the width direction of the antenna coils; compared with the prior art, the invention has the obvious advantages of reasonable structure, high reading and writing speed, low cost, accuracy, reliability and the like.
Description
The technical field is as follows:
the invention relates to the technical field of radio frequency identification, in particular to an RFID intelligent storage cabinet which can read an article with an RFID label attached to the cabinet body in the three-dimensional direction and has the advantages of reasonable structure, high reading and writing speed, low cost, accuracy and reliability and application thereof.
Background art:
as is well known, in the field of smart books at present, there are two main rf antennas: the first is a vertical antenna scheme, and the components of the prototype comprise a high-power reader-writer, a power divider, a plurality of radio-frequency antennas and the like. The principle is that firstly a high-power reader-writer emits high-power radio-frequency signals, the power transmitted by the high-power reader-writer is redistributed through a power divider and distributed to all necessary radio-frequency antennas as required, and therefore the radio-frequency magnetic field distribution and the uniform coverage of the signals in a large area are achieved. When the excitation signal sent by the antenna reaches the label with specific frequency, a corresponding response signal is generated on the label, the information is collected back to the reader-writer by each antenna, and then the purpose of reading the information in the radio frequency signal is realized by the reader-writer. From the application of RFID in the aspect of bookshelves, the antenna has the problems of tag read fleeing and tag read missing in the technical aspect, and also has the problems of low cost performance, high unit price and the like in the aspect of cost.
In the technical aspect, the vertical coil is generally in a square ring shape, the operation of detecting the label is performed through a uniform annular magnetic field generated by four sides, the strength of the magnetic field of the middle part can be maximized in the mode, but the label is difficult to ensure to be adhered to different positions, a large number of overlapped labels can be stored at the moment, the phenomenon of serious mutual inductance between the labels is caused, and the phenomenon of missed detection of the label is finally caused.
Moreover, because the electromagnetic wave is uniformly surrounded on four sides of the antenna, the two sides parallel to the horizontal plane and the antenna close to the adjacent lattice can easily detect books which do not belong to the local lattice of the layer without adding metal partitions, so that the reading phenomenon of the books is caused, and the reading error is caused. If the isolation metal plates are added in the upper, lower, rear, left and right directions of the grid, electromagnetic waves cannot be completely isolated, the phenomenon of reading by reading still exists although the phenomenon is improved, and the effect of magnetic fields generated by three sides of the antenna close to the antenna is greatly reduced due to the reason that the metal plates isolate the electromagnetic waves, so that serious resource waste is caused. However, due to the defects in the prior art, the current reading problem can be reduced only by means of metal partition.
The vertical antenna has high requirements on the structure, and simultaneously has great requirements on stability and later maintenance, firstly, due to the addition of a plurality of antenna plates and power divider plates, the number of components is too large, so that the installation and maintenance are troublesome, and the vertical antenna is easy to damage. Secondly, the shelf-arranging habit of the librarian is not met, and due to the blocking of the plurality of partitions, the librarian cannot arrange shelves inwards or outwards according to the past habit in a unified way, so that the training cost of the librarian in the later period is increased. Due to the reasons, the reading success rate of the bookshelf antenna cannot achieve the ideal target, and therefore, the bookshelf antenna causes great troubles for later popularization.
In terms of cost, the disadvantage of the vertical antenna not only reflects that the realization is difficult technically, but also cannot achieve great advantage in terms of cost. Due to the various problems in the technical aspect, the fact that the vertical antenna cannot be made into a transparent bookshelf is determined, and the content of the bookshelf can be displayed only in a bookshelf-like manner.
In the aspect of structure, the vertical antenna is adopted, metal plates are additionally arranged in five directions of the upper part, the lower part, the left part, the right part and the back part of each grid of the antenna to prevent the reading channeling caused by the excessive diffusion of a magnetic field, and the bookshelf in the practical sense only needs four upright posts as supporting points, so that compared with the traditional bookshelf with strong permeability, the cost of the design is greatly improved on the aspect of structural problems.
In the aspect of electricity, the vertical antenna bookshelf on the market at present, every grid needs 4 antennas to cooperate and examines label work, and every antenna needs corresponding electric elements cooperation again to adopt vertical antenna to make the merit again and divide the ware alone to and divide the connecting wire between ware and the antenna, these operations are undoubtedly again huge cost problem.
In the view of customers, due to the reasons of the antenna partition and the necessary space generated by the factors that the antenna can better realize functions and the like, each partition space cannot be fully utilized, so that unnecessary troubles such as too few books are placed and too many bookshelves are purchased are caused.
And secondly, the laminated radio frequency antenna is a huge promotion to the development of intelligent bookshelves. The intelligent bookshelf overcomes the reading problem of the reading device, solves the intelligent bookshelf problem and saves a large amount of cost. And because the scheme only needs one antenna, the power divider is omitted, the direct connection from the reader-writer to the antenna is realized, and the problems of impedance matching and the like are better solved. The label matched with the laminated antenna is adhered to the spine of the book, so that the label is prevented from being overlapped to a certain extent, and the reading accuracy is improved.
The invention content is as follows:
aiming at the defects and shortcomings in the prior art, the invention provides the RFID intelligent storage cabinet which can read the objects with the RFID labels attached in the cabinet body in the three-dimensional direction, and has the advantages of reasonable structure, high reading and writing speed, low cost, accuracy and reliability, and the application thereof.
The invention can be achieved by the following measures:
an RFID intelligent storage cabinet is provided with a cabinet body, and is characterized in that more than two transverse partition plates are arranged in the cabinet body, radio frequency antenna groups are arranged in the transverse partition plates, and a first radio frequency antenna group and a second radio frequency antenna group are respectively arranged in the adjacent transverse partition plates, wherein the first radio frequency antenna group consists of two rectangular antenna coils with the same specification, the two rectangular antenna coils are partially overlapped, and the two rectangular antenna coils are partially overlapped along the length direction of the antenna coils; the second radio frequency antenna group consists of two rectangular antenna coils with the same specification, and the two rectangular antenna coils are partially overlapped along the width direction of the antenna coils; each antenna coil is provided with a switch, the control end of the switch is connected with a controller in the radio frequency reader-writer, and the signal input end of the switch is connected with a radio frequency read-write circuit in the radio frequency reader-writer through a matching circuit.
According to the invention, the transparent cabinet door is arranged on the cabinet body, the sensor for sensing the opening and closing state of the cabinet door is arranged between the cabinet door and the cabinet body, and the RFID transparent shielding film is attached to the cabinet door.
The top of the cabinet body is provided with the case, the radio frequency reader-writer is arranged at the top of the cabinet body, and the radio frequency reader-writer adopts a plurality of paths of radio frequency reader-writers and is used for adapting to a plurality of radio frequency antennas in the cabinet body.
The invention also comprises an upper computer which is connected with the multi-path radio frequency reader-writer.
The invention also discloses an application of the RFID intelligent storage cabinet, which is characterized by comprising the following steps:
step 1: when the cabinet door is opened, the multi-path radio frequency reader-writer executes the instruction of the control software, the magnetic field is opened from the first path, a radio frequency modulation signal is output, and after the radio frequency signal is received by the tags in the cabinet body, the tag information of each tag is returned; the reader-writer has anti-collision capacity, when multiple tags return data collision at the same time, the tags UID of the current antenna are detected one by increasing or decreasing the mask, and a static instruction is sent, the tags receive the static instruction, and the reader-writer cannot respond to the query of the reader-writer before receiving the next activation instruction or magnetic field reset;
step 2: when the first antenna is detected, the multi-path radio frequency reader-writer immediately starts the second radio frequency, the intermediate magnetic field is uninterrupted, and the label in the magnetic field cannot be disabled, so that the detection of the rest labels by the second antenna is not influenced; the reader-writer antennas are sequentially started, so that the tags are prevented from being read repeatedly, tag detection is accurately and efficiently completed, and then the detected tag data are sent to control software;
and step 3: when the control software receives data returned by the reader-writer, the information of the label in the database is compared, whether the label in the cabinet changes or not is judged, the information of the article corresponding to the changed label is acquired through information query based on the database, so that the storage or taking condition of the article in the cabinet is known, the database is updated, and after the cabinet door is closed, the personal behavior is recorded according to the login information of opening the cabinet.
When the cabinet door is opened, the sensor on the cabinet door is triggered, the system detects the opening and closing state, and the reader-writer starts to perform polling work in the 1 st path in sequence, so that the reading of the label in each direction is ensured.
Compared with the prior art, the invention has the following advantages: (1) the practicability of the cabinet body is improved, and the RFID antenna is arranged in the cabinet body, so that the information of articles in the cabinet body can be read in real time, and the practicability of the cabinet body is enhanced; (2) the application occasions are increased, the multilayer panel antenna is placed in the cabinet body, the original cabinet body structure is basically not changed, and the cabinet body is more practical; (3) by optimizing the design of the antenna part, the distribution of the magnetic field in the three-dimensional direction is realized in the cabinet body, so that articles can be placed at will, and 100% reading is realized; (4) the RFID transparent shielding film is adhered to the transparent glass of the cabinet door, so that a magnetic field is bound inside the cabinet body, articles outside the cabinet body are prevented from being misread, and the magnetic field has strong limitation; (5) the rollers are arranged below the cabinet body, so that the cabinet is convenient to transport.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the open cabinet state of the present invention.
Fig. 3 is a schematic structural diagram of the multi-channel rf reader/writer according to the present invention.
Fig. 4 is a schematic structural diagram of a first rf antenna group in the present invention.
Fig. 5 is a schematic structural diagram of a second rf antenna group according to the present invention.
Fig. 6 is a schematic view of the reading of a tag in the present invention.
Reference numerals: the radio frequency antenna comprises a first radio frequency antenna group 1, a second radio frequency antenna group 2, a cabinet body 4, a cabinet door 5, a multi-path radio frequency reader-writer 6 and a switch 7.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings.
The invention mainly relates to an RFID storage cabinet, wherein a cabinet body 4 is made of a metal shielding material in order to better constrain a magnetic field; the cabinet door 5 is made of transparent materials, such as tempered glass and transparent acrylic, and a layer of RFID transparent metal shielding film is adhered to the surface of the cabinet door 5 and used for shielding magnetic field signals; as shown in the figure, the RFID intelligent storage cabinet includes a cabinet body 4, a multi-channel radio frequency reader-writer 6, a first radio frequency antenna group 1, and a second radio frequency antenna group 2; the cabinet body 4 comprises a top chassis 3 and a cabinet door 5; the antenna part is divided into a first radio frequency antenna group and a second radio frequency antenna group in two antenna forms, and the first radio frequency antenna group and the second radio frequency antenna group are alternately arranged in the cabinet body from top to bottom.
For a tag perpendicular to an antenna plane, the magnetic field penetrating in and out of the tag at the center part of the antenna is the same, the magnetic flux is 0, and the tag belongs to a reading blind area. For the second radio frequency antenna group, after the left side part of the antennas of the second radio frequency antenna group finishes working, the right side part of the antennas works, the left side part of the antennas reads the tags in the middle area of the right side part of the antennas, the right side part of the antennas reads the tags in the middle area of the left side of the antennas, and therefore the tags in the C direction can be read without blind areas. For both the first and second set of radio frequency antennas, a tag parallel to the antenna plane can be read. Thereby realizing the reading of the A/B/C three-dimensional direction label.
The sensor is placed on the cabinet door, when the cabinet door is opened, the sensor on the cabinet door is triggered, the system detects the opening and closing state, the reader-writer starts to perform polling work in sequence on the 1 st path, and the reading of the label in each direction is guaranteed.
The reader-writer is a multi-path reader-writer, and the number of the interfaces of the reader-writer is determined according to the number of the antennas in the cabinet body.
Control and data processing flow:
when the cabinet door is opened, the reader-writer executes the instruction of the control software, the magnetic field is opened from the first path, a radio frequency modulation signal is output, and after the radio frequency signal is received by the tags in the cabinet body, the tag information of each tag is returned; meanwhile, the reader-writer has anti-collision capacity, when multiple tags return data collision at the same time, the tags UID of the antenna can be detected one by one in a mode of increasing or decreasing masks, and static instructions are sent, and the tags receive the static instructions and do not respond to the query of the reader-writer any more before receiving the next activation instruction or magnetic field reset; when the first antenna is detected, the reader immediately starts the second radio frequency, the middle magnetic field is uninterrupted, and the label in the magnetic field cannot be disabled, so that the detection of the rest labels by the second antenna is not influenced; the reader-writer antenna is sequentially opened, so that the tag can not be repeatedly read, the tag detection is accurately and efficiently completed, and then the detected tag data is sent to the control software.
When the control software receives data returned by the reader-writer, the information of the label in the database is compared, whether the label in the cabinet changes or not is judged, the information of the article corresponding to the changed label is acquired through information query based on the database, so that the storage or taking condition of the article in the cabinet is known, the database is updated, and after the cabinet door is closed, the personal behavior is recorded according to the login information of opening the cabinet.
Each layer of antenna is in a double-antenna form, and the double antennas of each layer of antenna are partially overlapped in the middle, which is shown in the attached drawings in detail. The first radio frequency antenna group is mainly responsible for labels in the direction A and the direction B, the second radio frequency antenna group is mainly responsible for labels in the direction B and the direction C, and the labels in the three directions of ABC can be read by means of mutual matching of the first radio frequency antenna group and the second radio frequency antenna group.
In order to prevent mutual interference between the antennas, each antenna is provided with a switch 7, when the antenna does not work, the antenna coil is in an off state, when the antenna works, the switch is on, and the antenna works normally.
Compared with the prior art, the invention has the following advantages: (1) the practicability of the cabinet body is improved, and the RFID antenna is arranged in the cabinet body, so that the information of articles in the cabinet body can be read in real time, and the practicability of the cabinet body is enhanced; (2) the application occasions are increased, the multilayer panel antenna is placed in the cabinet body, the original cabinet body structure is basically not changed, and the cabinet body is more practical; (3) by optimizing the design of the antenna part, the distribution of the magnetic field in the three-dimensional direction is realized in the cabinet body, so that articles can be placed at will, and 100% reading is realized; (4) the RFID transparent shielding film is adhered to the transparent glass of the cabinet door, so that a magnetic field is bound inside the cabinet body, articles outside the cabinet body are prevented from being misread, and the magnetic field has strong limitation; (5) the rollers are arranged below the cabinet body, so that the cabinet is convenient to transport.
Claims (1)
1. The RFID intelligent storage cabinet is provided with a cabinet body, more than two transverse partition plates are arranged in the cabinet body, radio frequency antenna groups are arranged in the transverse partition plates, and a first radio frequency antenna group and a second radio frequency antenna group are respectively arranged in the adjacent transverse partition plates, wherein the first radio frequency antenna group consists of two rectangular antenna coils with the same specification, the two rectangular antenna coils are partially overlapped, and the two rectangular antenna coils are partially overlapped along the length direction of the antenna coils; the second radio frequency antenna group consists of two rectangular antenna coils with the same specification, and the two rectangular antenna coils are partially overlapped along the width direction of the antenna coils; each antenna coil is provided with a switch, the control end of the switch is connected with a controller in the radio frequency reader-writer, and the signal input end of the switch is connected with a radio frequency reading-writing circuit in the radio frequency reader-writer through a matching circuit;
a transparent cabinet door is arranged on the cabinet body, a sensor for sensing the opening and closing state of the cabinet door is arranged between the cabinet doors, and an RFID transparent shielding film is attached to the cabinet door;
the top of the cabinet body is provided with a case, the radio frequency reader-writer is arranged at the top of the cabinet body, and the radio frequency reader-writer adopts a plurality of paths of radio frequency reader-writers and is used for adapting to a plurality of radio frequency antennas in the cabinet body;
the system also comprises an upper computer, wherein the upper computer is connected with the multi-path radio frequency reader-writer;
the antenna in the first radio-frequency antenna group and the antenna in the second radio-frequency antenna group are both in a double-antenna coil form, after the work of the upper part of the antenna in the first radio-frequency antenna group is finished, the lower part of the antenna works, the lower part of the antenna reads the label in the A direction of the middle part of the upper part of the antenna, and the antenna in the upper part of the first radio-frequency antenna group can also read the label in the A direction of the middle area of the lower part of the antenna, so that the label reading in the A direction; for the second radio frequency antenna group, after the left side part of the antennas of the second radio frequency antenna group finishes working, the right side part works, the left side part of the antennas reads the tags in the middle area of the right side part of the antennas, the right side part of the tags reads the tags in the middle area of the left side antennas, and therefore the tags in the C direction can be read without blind areas; for the first radio frequency antenna group and the second radio frequency antenna group, the tags parallel to the antenna plane can be read, so that the reading of the tags in the A/B/C three-dimensional direction is realized;
the method is characterized by comprising the following steps:
step 1: when the cabinet door is opened, the multi-path radio frequency reader-writer executes the instruction of the control software, the magnetic field is opened from the first path, a radio frequency modulation signal is output, and after the radio frequency signal is received by the tags in the cabinet body, the tag information of each tag is returned; the reader-writer has anti-collision capacity, when multiple tags return data collision at the same time, the tags UID of the current antenna are detected one by increasing or decreasing the mask, and a static instruction is sent, the tags receive the static instruction, and the reader-writer cannot respond to the query of the reader-writer before receiving the next activation instruction or magnetic field reset;
step 2: when the first antenna is detected, the multi-path radio frequency reader-writer immediately starts the second radio frequency, the intermediate magnetic field is uninterrupted, and the label in the magnetic field cannot be disabled, so that the detection of the rest labels by the second antenna is not influenced; the reader-writer antennas are sequentially started, so that the tags are prevented from being read repeatedly, tag detection is accurately and efficiently completed, and then the detected tag data are sent to control software;
and step 3: when the control software receives data returned by the reader-writer, the information of the label in the database is compared, whether the label in the cabinet changes or not is judged, the information of the article corresponding to the changed label is acquired through information query based on the database, so that the storage or taking condition of the article in the cabinet is known, the database is updated, and after the cabinet door is closed, the personal behavior is recorded according to the login information of opening the cabinet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811126030.1A CN109512158B (en) | 2018-09-26 | 2018-09-26 | RFID intelligent storage cabinet and application thereof |
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| CN201811126030.1A CN109512158B (en) | 2018-09-26 | 2018-09-26 | RFID intelligent storage cabinet and application thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111144150B (en) * | 2019-12-05 | 2023-03-28 | 威海北洋光电信息技术股份公司 | Odd-even synchronization technology-based non-inductive book borrowing and returning channel support, and cascade device and method |
| CN111700395A (en) * | 2020-05-11 | 2020-09-25 | 常熟市第一人民医院 | Commodity shelf and warehouse management system using same |
| CN112307790A (en) * | 2020-11-04 | 2021-02-02 | 中铁信安(北京)信息安全技术有限公司 | Anti-read-through reading device and method for intelligent RFID (radio frequency identification) article storage cabinet |
| CN115444230A (en) * | 2022-08-09 | 2022-12-09 | 厦门科路德科技有限公司 | Cabinet capable of sensing opening and closing state and control method thereof |
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