CN111062225B - Article identification method for storage cabinet and intelligent storage cabinet - Google Patents
Article identification method for storage cabinet and intelligent storage cabinet Download PDFInfo
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- CN111062225B CN111062225B CN201911302183.1A CN201911302183A CN111062225B CN 111062225 B CN111062225 B CN 111062225B CN 201911302183 A CN201911302183 A CN 201911302183A CN 111062225 B CN111062225 B CN 111062225B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012795 verification Methods 0.000 claims abstract description 59
- 238000004321 preservation Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
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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.
- G06K7/10029—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 time domain, e.g. using binary tree search or RFID responses allocated to a random time slot
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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
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10861—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing of data fields affixed to objects or articles, e.g. coded labels
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
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Abstract
The present disclosure provides a method for identifying articles in a storage cabinet and an intelligent storage cabinet, the method comprising: a time slot with a preset number of time slots is distributed to all RFID tags, and each RFID tag randomly selects one time slot; when the inventory frame is started, the sequence number of the time slot selected by each RFID tag is reduced by 1; when the sequence number of the time slot is 0, the RFID tag corresponding to the time slot sends data information to the RFID card reader, wherein the data information comprises a random verification code; the RFID card reader receives and analyzes the data information, and sends the random verification code obtained by analysis to the RFID tag as a verification character; and if the verification character received by the RFID tag is the same as the random verification code transmitted by the RFID tag, transmitting article storage information to the RFID card reader. The method and the device can improve the identification rate of the article to be stored and prevent the article to be stored from being read out.
Description
Technical Field
Embodiments of the present disclosure relate generally to the field of critical item security supervision and, more particularly, to a method of holding cabinet item identification and an intelligent holding cabinet.
Background
At present, like the product in the market, such as a confidential cabinet of a government unit, an administrator cannot know what articles are stored in the storage cabinet, cannot timely and comprehensively know the quantity, storage positions and safety states of the articles managed by the administrator, lacks functions of controlling and analyzing the articles, and the like, and cannot meet the management requirements of important assets such as files, information carriers and valuables in the market.
The user stores the articles by swiping cards, passwords, bar codes and the like through the switch cabinet door, the administrator cannot know what articles are accessed, the quantity, storage positions and the like of the articles managed by the administrator cannot be known comprehensively in time, and functions of controlling and analyzing the articles are lacked.
Disclosure of Invention
In a first aspect of the present disclosure, there is provided a holding cabinet article identification method comprising: a time slot with a preset number of time slots is distributed to all RFID tags, and each RFID tag randomly selects one time slot; when the inventory frame is started, the sequence number of the time slot selected by each RFID tag is reduced by 1; when the sequence number of the time slot is 0, the RFID tag corresponding to the time slot sends data information to an RFID card reader, wherein the data information comprises a random verification code; the RFID card reader receives and analyzes the data information, and sends the random verification code obtained by analysis to the RFID tag as a verification character; and if the verification character received by the RFID tag is the same as the random verification code transmitted by the RFID tag, transmitting article storage information to the RFID card reader.
Aspects and any one of the possible implementations as described above, further providing an implementation, further including: and if the RFID card reader cannot analyze the random verification code, the RFID tag reselects a new time slot.
Aspects and any one of the possible implementations as described above, further providing an implementation, the preset number is 2 Q Wherein Q is a positive integer of 1 or more.
Aspects and any one of the possible implementations as described above, further providing an implementation, further including: in one inventory frame, if the probability of the RFID card reader to analyze the random verification code is smaller than a preset threshold value, increasing the number of the time slot; and if the time for the RFID card reader to receive the data information carrying the random verification code is smaller than a preset threshold value, reducing the number of the time slot.
In accordance with the above aspect and any one of the possible implementations, there is further provided an implementation, where the article holding information further includes an EPC value, the EPC value is used to indicate article holding information to which the RFID tag is bound, and the RFID reader returns an RSSI value when reading the article holding information, where the RSSI value is used to indicate a signal strength.
Aspects and any one of the possible implementations as described above, further providing an implementation, further including: the RFID card reader receives the article storage information and analyzes the EPC value in the article storage information; comparing the analyzed EPC value with a preset EPC value; if the analyzed EPC value is the same as the preset EPC value, storing the article storage information; and if the analyzed EPC value is different from the preset EPC value, filtering the article storage information.
Aspects and any one of the possible implementations as described above, further providing an implementation, further including: the RFID card reader receives the article storage information and analyzes the EPC value in the article storage information and the RSSI value returned when the RFID card reader reads the article storage information; comparing the analyzed EPC value with a preset EPC value; if the analyzed EPC value is the same as the preset EPC value, comparing the RSSI value with a preset RSSI value or a preset RSSI value range; if the RSSI value is the same as the preset RSSI value or falls into the preset RSSI value range, storing the article storage information; and if the RSSI value is different from the preset RSSI value or does not fall into the preset RSSI value range, filtering the article storage information.
In a second aspect of the present disclosure, there is provided an intelligent holding cabinet comprising: the storage cabinet comprises a storage cabinet body, and an electric control lock and a manual control lock which are arranged on the storage cabinet body; the article identification device comprises an RFID card reader and RFID antennas, wherein at least one RFID antenna is arranged on the bottom surface of the preservation cabinet body, at least one RFID antenna is arranged on the side surface of the preservation cabinet body, and the RFID card reader is connected with the RFID antennas; the electric control lock controller is connected with the electric control lock and used for controlling the opening of the electric control lock; the inventory controller is respectively connected with the electric control lock controller and the RFID card reader and is used for sending an unlocking instruction to the electric control lock controller and/or receiving article storage information identified by the RFID card reader; the central controller is connected with the checking controller and used for controlling the checking controller to send unlocking instructions to the electric control lock controller and/or receiving article storage information received by the checking controller.
In a third aspect of the present disclosure, there is provided an intelligent holding cabinet comprising: a plurality of holding cabinet bodies; an electric control lock, a manual control lock, an electric control lock controller and an article storage device are arranged in each storage cabinet body; the article identification device comprises an RFID card reader and RFID antennas, wherein at least one RFID antenna is arranged on the bottom surface of the preservation cabinet body, at least one RFID antenna is arranged on the side surface of the preservation cabinet body, and the RFID card reader is connected with the RFID antennas; in each storage cabinet body, the electric control lock controller is connected with the electric control lock and used for controlling the opening of the electric control lock; an inventory controller is arranged in one of the storage cabinet bodies, and is respectively connected with the electric control lock controller and the RFID card reader, and is used for sending an unlocking instruction to the electric control lock controller and/or receiving article storage information identified by the RFID card reader; the storage cabinet is characterized in that a central controller is arranged outside the storage cabinet body and is connected with the checking controller, and the central controller is used for controlling the checking controller to send unlocking instructions to the electric control lock controller and/or receiving article storage information received by the checking controller.
In the aspects and any possible implementation manner described above, there is further provided an implementation manner, where the label duplication removal module and/or the label channeling duplication removal module are disposed in the cabinet body.
In the article identification method of the storage cabinet and the intelligent storage cabinet provided by the embodiments of the present disclosure, when the sequence number of the selected time slot is 0, the RFID tag sends data information carrying a random verification code to the RFID reader, the RFID reader parses the random verification code when receiving the data information, and sends the random verification code as a verification character to the RFID tag, and when the verification character received by the RFID tag is identical to the random verification code sent by the RFID tag, the article storage information is sent to the RFID reader, thereby improving the identification rate of the article to be stored and preventing the article to be stored from being missed.
It should be understood that what is described in this summary is not intended to limit the critical or essential features of the embodiments of the disclosure nor to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The above and other features, advantages and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, wherein like or similar reference numerals denote like or similar elements, in which:
FIG. 1 shows a schematic structural diagram of an intelligent cabinet according to an embodiment of the present invention;
FIG. 2 illustrates an RFID antenna installation schematic provided by one embodiment of the present invention;
FIG. 3 shows a schematic structural diagram of an intelligent cabinet according to another embodiment of the present invention;
fig. 4 shows a block diagram of a holding cabinet article identification method provided by an embodiment of the invention.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are some embodiments of the present disclosure, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments in this disclosure without inventive faculty, are intended to be within the scope of this disclosure.
In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
Fig. 1 shows a schematic structural diagram of an intelligent storage cabinet according to an embodiment of the present invention, and fig. 2 shows an RFID antenna installation schematic according to an embodiment of the present invention.
Referring to fig. 1, the intelligent holding cabinet includes a holding cabinet body 110, an electric control lock 120, a manual control lock 130, an article identification device, an electric control lock controller 150, an inventory controller 160, and a central controller 170.
The central controller 170 is connected with the checking controller 160, the checking controller 160 is connected with the electric control lock controller 150, the electric control lock controller 150 is connected with the electric control lock 120, and the electric control lock 120 and the manual control lock 130 are arranged on the storage cabinet body 110.
It should be noted that, the electric control lock 120 and the manual control lock 130 may be lock bodies commonly used in the market, so long as the electric control lock 120 is ensured to be unlocked by the manual control lock 130 when faults occur, i.e. the cabinet door of the cabinet body 110 can be opened.
In this embodiment, referring to fig. 2, the article identifying device includes an RFID antenna 140 and an RFID reader, at least one RFID antenna 140 is disposed on the bottom surface of the holding cabinet body 110, at least one RFID antenna 140 is disposed on the side surface of the holding cabinet body 110, and the RFID reader is connected with the RFID antenna 140, so that the articles in the holding cabinet body 110 can be ensured to be within the coverage range of RFID wireless signals. Alternatively, one RFID antenna 140 may be provided on each of the bottom and side surfaces of the locker body 110.
With continued reference to fig. 1, an electrically controlled lock controller 150 is coupled to the electrically controlled lock 120 for controlling the opening of the electrically controlled lock 120.
The inventory controller 160 is respectively connected with the electric control lock controller 150 and the RFID card reader, and is used for sending an unlocking instruction to the electric control lock controller 150 and/or receiving article storage information identified by the RFID card reader.
The central controller 170 is connected to the inventory controller 160, and is configured to control the inventory controller 160 to send an unlocking command to the electronic control lock controller 150, and/or to receive the article storage information received by the inventory controller 160.
In some embodiments, to accurately know the type of items stored in the holding cabinet, the number of items, the storage location, and what items to store, an RFID tag may be affixed to the item to be held, the RFID tag having a unique correspondence with the item to be held, and the correspondence may be held in the central controller 170. Alternatively, if the article to be stored is a metal article, an anti-metal RFID tag may be attached to the metal article to be stored.
In some embodiments, to prevent the articles in the holding cabinet body 110 from being read out, the following method may be used. The method comprises the following steps:
a time slot having a predetermined number of time slots is allocated to all RFID tags, and each RFID tag randomly selects a time slot.
Wherein the preset number may be 2 Q Q is a positive integer greater than or equal to 1. It should be noted that all slots in one slot broadcast have sequential numbers. For example, when Q is 2, there are 4 slots in the slot broadcast, and the sequence numbers of the slots are 1, 2, 3, and 4.
When the inventory frame is started, the sequential number of the slot selected by each RFID tag is decremented by 1.
Wherein the inventory frame may be one frame signal having a specific length.
When the sequence number of the time slot is 0, the RFID tag corresponding to the time slot transmits data information to the RFID card reader, wherein the data information comprises a random verification code.
Wherein, the random verification code can be a random number of 0-65535.
The RFID card reader receives and analyzes the data information, and sends the random verification code obtained through analysis to the RFID tag as a verification character.
And if the verification character received by the RFID tag is the same as the random verification code transmitted by the RFID tag, transmitting article storage information to the RFID card reader.
The article holding information may include, among other things, the type of article, the number of articles, the storage location, and what articles to store. For example, an ID number (e.g., a set of data codes) may be used to indicate the type of item, the number of items, the location of storage, and what item to store.
In this embodiment, if the RFID reader cannot analyze the random verification code, the RFID tag reselects a new slot, and when the sequence number of the slot is 0, the data information carrying the random verification code is sent again.
In this embodiment, in one inventory frame, if the probability of the RFID reader resolving the random verification code is smaller than the first preset threshold, it is indicated that the number of RFID tags is greater than the number of slot slots, and the number of slot slots needs to be increased, that is, the value of Q is increased; if the time that the RFID card reader receives the data information carrying the random verification code is smaller than the first preset threshold value, the number of the RFID tags is smaller than the number of the time slot slots, and the number of the time slot slots needs to be reduced, namely the value of Q is reduced.
In this embodiment, when the sequence number of the selected slot is 0, the RFID tag sends data information carrying a random verification code to the RFID reader, the RFID reader parses the random verification code when receiving the data information, and sends the random verification code as a verification character to the RFID tag, and when the verification character received by the RFID tag is identical to the random verification code sent by the RFID tag, the RFID tag sends article storage information to the RFID reader, thereby improving the identification rate of the article to be stored and preventing the article to be stored from being missed.
Fig. 3 shows a schematic structural diagram of an intelligent storage cabinet according to another embodiment of the present invention.
Referring to fig. 3, the intelligent holding cabinet includes a plurality of holding cabinet bodies 110, each holding cabinet body 110 is provided therein with an electric control lock 120, a manual control lock 130, an electric control lock controller 150 and an article identification device, wherein a checking controller 160 is provided in one of the holding cabinet bodies 110, and a central controller 170 is provided outside the holding cabinet body 110.
The electric control lock controller 150 is connected with the electric control lock 120 and is used for controlling the opening of the electric control lock 120; the inventory controller 160 is respectively connected with the electric control lock controller 150 and the RFID card reader, and is used for sending an unlocking instruction to the electric control lock controller 150 and/or receiving article storage information identified by the RFID card reader; the central controller 170 is connected to the inventory controller 160, and is configured to control the inventory controller 160 to send an unlocking command to the electronic control lock controller 150, and/or to receive the article storage information received by the inventory controller 160.
In this embodiment, the article identifying device includes an RFID antenna 140 and an RFID card reader, the arrangement of the RFID card reader and the RFID antenna 140 is the same as that in the above embodiment, and the arrangement of the electric control lock 120 and the manual control lock 130 is the same as that in the above embodiment, which are not repeated here.
In some embodiments, each of the holding cabinet bodies 110 is welded in a seamless manner, a shielding material is sprayed on the storage space inside the holding cabinet body 110, and a shielding strip is stuck on a cabinet door of each of the holding cabinet bodies 110, so that after the cabinet door is closed, RFID wireless signals are prevented from leaking, and a serial reading phenomenon is prevented when RFID tags are identified, namely, the RFID antenna 140 in one of the holding cabinet bodies 110 reads the RFID tags in the next holding cabinet body 110.
In some embodiments, to prevent repeated inventory of items within the cabinet, a tag deduplication module may be provided within the holding cabinet body 110 for reading an EPC value in the item holding information sent by the RFID tag, where the EPC value is used to represent the item holding information to which the RFID tag is bound. For example, some bits in the EPC value may be used to represent item-holding information.
Specifically, when checking the objects stored in the current storage cabinet body 110, the tag duplication removing module reads EPC values in the object storage information sent by the RFID tags attached to all the stored objects in the storage cabinet body 110, compares the read EPC values in the new object storage information with EPC values in the object storage information already checked, and filters out object storage information with repeated EPC values, thereby ensuring the uniqueness of the RFID tags and avoiding repeated checking of the same object in the storage cabinet body 110.
In some embodiments, to prevent inventory of items in the current holding cabinet body 110 from other holding cabinet bodies 110 during inventory of items in the holding cabinet body 110, a tag read-through deduplication module may be disposed in the holding cabinet body 110, where the tag read-through deduplication module includes a signal strength comparison deduplication unit and a tag attribute comparison deduplication unit.
The tag attribute comparison and de-duplication unit is used for reading the EPC value in the article storage information sent by the RFID tag.
In this embodiment, the RSSI value is used to indicate the signal strength returned when the item holding information is read, and the EPC value is used to indicate the item holding information to which the RFID tag is bound.
Specifically, when it is required to inventory an item in the holding cabinet body 110, the item holding information of the current holding cabinet body 110 is first held as tag data, and the tag data may be represented by EPC values and RSSI values, for example, a few bits in EPC values are used to represent item information data, and an RSSI value is used to represent the signal strength of the tag in the current holding cabinet body 110. The RSSI value may be a specific value or a specific range of values.
Then, the RFID tag on the article to be checked sends article storage information, the RSSI value in the article storage information of the duplication eliminating unit is compared through the signal strength, the tag attribute is compared with the EPC value in the article storage information, when the EPC value in the article storage information is the same, the article to be checked is indicated to be positioned in the current storage cabinet body 110 or another storage cabinet body 110 close to the current storage cabinet body 110, at the moment, the RSSI value returned when the article storage information is required to be continuously compared and read by the RFID card reader is required to be checked, if the RSSI value is the same as the RSSI value in the tag data or falls into the range of the RSSI value, the article to be checked is indicated to be positioned in the current storage cabinet body 110, and the article to be checked is checked; otherwise, the to-be-checked object is removed, and data storage is not carried out on the to-be-checked object.
In this embodiment, the tag duplication removal module and the tag duplication removal module identify whether the article storage information sent by the RFID tag read by the RFID reader belongs to the current storage cabinet, so that the article storage information of the RFID tag not belonging to the current storage cabinet can be removed, and the inventory recognition rate of the article to be stored is improved.
In some embodiments, a transceiver adapter module is disposed in each storage cabinet body 110, so as to adapt connection between the RFID antenna in each storage cabinet body 110 and the RFID reader, thereby solving the read-through problem when the RFID tag is identified.
Fig. 4 shows a block diagram of a holding cabinet article identification method provided by an embodiment of the invention.
Referring to fig. 4, the method for identifying articles in a holding cabinet comprises the following steps:
in step 401, a time slot having a predetermined number of time slots is allocated to be broadcast to all RFID tags, and each RFID tag randomly selects one time slot.
Wherein the preset number may be 2 Q Q is a positive integer greater than or equal to 1. It should be noted that all slots in one slot broadcast have sequential numbers. For example, when Q is 2, there are 4 slots in the slot broadcast, and the sequence numbers of the slots are 1, 2, 3, and 4.
Step 402, when the inventory frame is started, the sequential number of the slot selected by each RFID tag is decremented by 1.
Wherein the inventory frame may be one frame signal having a specific length.
In step 403, when the sequence number of the slot is 0, the RFID tag corresponding to the slot transmits data information to the RFID reader, where the data information includes a random verification code.
Wherein, the random verification code can be a random number of 0-65535.
And step 404, the RFID card reader receives and analyzes the data information, and transmits the random verification code obtained by analysis to the RFID tag as a verification character.
And step 405, if the verification character received by the RFID tag is the same as the random verification code sent by the RFID tag, sending article storage information to the RFID card reader.
The article holding information may include, among other things, the type of article, the number of articles, the storage location, and what articles to store. For example, an ID number (e.g., a set of data codes) may be used to indicate the type of item, the number of items, the location of storage, and what item to store.
In some embodiments, the holding cabinet article identification method further comprises the steps of:
if the RFID card reader cannot analyze the random verification code, the RFID tag reselects a new time slot, and when the sequence number of the time slot is 0, the data information carrying the random verification code is sent again.
In some embodiments, the holding cabinet article identification method further comprises the steps of:
in one inventory frame, if the probability of the RFID card reader analyzing the random verification code is smaller than a first preset threshold value, the number of the RFID tags is larger than the number of the time slot slots, and the number of the time slot slots needs to be increased, namely the number of Q is increased; if the time that the RFID card reader receives the data information carrying the random verification code is smaller than the first preset threshold value, the number of the RFID tags is smaller than the number of the time slot slots, and the number of the time slot slots needs to be reduced, namely the value of Q is reduced.
In some embodiments, the item holding information includes an EPC value that is used to represent the item holding information to which the RFID tag is bound, and the RFID reader returns an RSSI value that is used to represent the signal strength when reading the item holding information.
Optionally, the method for identifying the articles in the holding cabinet further comprises the following steps:
the RFID card reader receives the article storage information and analyzes the article storage information to obtain an EPC value in the article storage information;
comparing the analyzed EPC value with a preset EPC value;
if the analyzed EPC value is the same as the preset EPC value, storing article storage information;
and if the analyzed EPC value is different from the preset EPC value, filtering the article storage information.
Optionally, the method for identifying the articles in the holding cabinet further comprises the following steps:
the RFID card reader receives the article storage information, analyzes the EPC value in the article storage information and returns an RSSI value when the RFID card reader reads the article storage information;
comparing the analyzed EPC value with a preset EPC value;
if the analyzed EPC value is the same as the preset EPC value, comparing the RSSI value returned when the RFID card reader reads the article storage information with the preset RSSI value or the preset RSSI value range;
if the returned RSSI value is the same as the preset RSSI value or falls into the preset RSSI value range when the RFID card reader reads the article storage information, the article storage information is stored;
and if the returned RSSI value is different from the preset RSSI value or does not fall into the range of the preset RSSI value when the RFID card reader reads the article storage information, filtering the article storage information.
In this embodiment, the preset EPC value, the preset RSSI value, and the preset RSSI value range may be set by those skilled in the art according to actual needs.
In this embodiment, when the sequence number of the selected slot is 0, the RFID tag sends data information carrying a random verification code to the RFID reader, the RFID reader parses the random verification code when receiving the data information, and sends the random verification code as a verification character to the RFID tag, and when the verification character received by the RFID tag is identical to the random verification code sent by the RFID tag, the RFID tag sends article storage information to the RFID reader, thereby improving the identification rate of the article to be stored and preventing the article to be stored from being missed.
In the description of the present specification, the terms "connected," "mounted," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In the description of the present specification, the terms "one embodiment," "some embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (8)
1. A method of identifying a holding cabinet article, comprising:
a time slot with a preset number of time slots is distributed to all RFID tags, and each RFID tag randomly selects one time slot;
when the inventory frame is started, the sequence number of the time slot selected by each RFID tag is reduced by 1;
when the sequence number of the time slot is 0, the RFID tag corresponding to the time slot sends data information to an RFID card reader, wherein the data information comprises a random verification code;
the RFID card reader receives and analyzes the data information, and sends the random verification code obtained by analysis to the RFID tag as a verification character;
if the verification character received by the RFID tag is the same as the random verification code sent by the RFID tag, sending article storage information to the RFID card reader;
the article storage information also comprises an EPC value, wherein the EPC value is used for representing the article storage information bound by the RFID tag, the RFID card reader returns an RSSI value when reading the article storage information, and the RSSI value is used for representing signal strength;
the RFID card reader receives the article storage information and analyzes the EPC value in the article storage information and the RSSI value returned when the RFID card reader reads the article storage information;
comparing the analyzed EPC value with a preset EPC value;
if the analyzed EPC value is the same as the preset EPC value, comparing the RSSI value with a preset RSSI value or a preset RSSI value range;
if the RSSI value is the same as the preset RSSI value or falls into the preset RSSI value range, storing the article storage information;
and if the RSSI value is different from the preset RSSI value or does not fall into the preset RSSI value range, filtering the article storage information.
2. The method as recited in claim 1, further comprising:
and if the RFID card reader cannot analyze the random verification code, the RFID tag reselects a new time slot.
3. The method according to claim 1, wherein the preset number is 2 Q Wherein Q is a positive integer of 1 or more.
4. The method as recited in claim 1, further comprising:
in one inventory frame, if the probability of the RFID card reader to analyze the random verification code is smaller than a preset threshold value, increasing the number of the time slot; and if the time for the RFID card reader to receive the data information carrying the random verification code is smaller than a preset threshold value, reducing the number of the time slot.
5. The method as recited in claim 1, further comprising:
the RFID card reader receives the article storage information and analyzes the EPC value in the article storage information;
comparing the analyzed EPC value with a preset EPC value;
if the analyzed EPC value is the same as the preset EPC value, storing the article storage information;
and if the analyzed EPC value is different from the preset EPC value, filtering the article storage information.
6. An intelligent holding cabinet for performing the holding cabinet item identification method of any one of claims 1-5, comprising:
the storage cabinet comprises a storage cabinet body, and an electric control lock and a manual control lock which are arranged on the storage cabinet body;
the article identification device comprises an RFID card reader and RFID antennas, wherein at least one RFID antenna is arranged on the bottom surface of the preservation cabinet body, at least one RFID antenna is arranged on the side surface of the preservation cabinet body, and the RFID card reader is connected with the RFID antennas;
the electric control lock controller is connected with the electric control lock and used for controlling the opening of the electric control lock;
the inventory controller is respectively connected with the electric control lock controller and the RFID card reader and is used for sending an unlocking instruction to the electric control lock controller and/or receiving article storage information identified by the RFID card reader;
the central controller is connected with the checking controller and used for controlling the checking controller to send unlocking instructions to the electric control lock controller and/or receiving article storage information received by the checking controller.
7. An intelligent holding cabinet for performing the holding cabinet item identification method of any one of claims 1-5, comprising:
a plurality of holding cabinet bodies;
an electric control lock, a manual control lock, an electric control lock controller and an article identification device are arranged in each storage cabinet body;
the article identification device comprises an RFID card reader and RFID antennas, wherein at least one RFID antenna is arranged on the bottom surface of the preservation cabinet body, at least one RFID antenna is arranged on the side surface of the preservation cabinet body, and the RFID card reader is connected with the RFID antennas;
in each storage cabinet body, the electric control lock controller is connected with the electric control lock and used for controlling the opening of the electric control lock;
an inventory controller is arranged in one of the storage cabinet bodies, and is respectively connected with the electric control lock controller and the RFID card reader, and is used for sending an unlocking instruction to the electric control lock controller and/or receiving article storage information identified by the RFID card reader;
the storage cabinet is characterized in that a central controller is arranged outside the storage cabinet body and is connected with the checking controller, and the central controller is used for controlling the checking controller to send unlocking instructions to the electric control lock controller and/or receiving article storage information received by the checking controller.
8. The intelligent holding cabinet of claim 7, wherein a tag deduplication module and/or a tag tamper module is disposed in the holding cabinet body.
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| 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 |
| WO2024050707A1 (en) * | 2022-09-07 | 2024-03-14 | Qualcomm Incorporated | Communication timing for identifiers |
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