CN114488003A - Article tracking and positioning method, device and medium based on tag RSSI (received Signal Strength indicator) value - Google Patents
Article tracking and positioning method, device and medium based on tag RSSI (received Signal Strength indicator) value Download PDFInfo
- Publication number
- CN114488003A CN114488003A CN202210133961.4A CN202210133961A CN114488003A CN 114488003 A CN114488003 A CN 114488003A CN 202210133961 A CN202210133961 A CN 202210133961A CN 114488003 A CN114488003 A CN 114488003A
- Authority
- CN
- China
- Prior art keywords
- tag
- label
- positioning
- labels
- writer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0252—Radio frequency fingerprinting
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0257—Hybrid positioning
- G01S5/0268—Hybrid positioning by deriving positions from different combinations of signals or of estimated positions in a single positioning system
Abstract
The invention discloses an article tracking and positioning method, device and medium based on a tag RSSI value, wherein the positioning method comprises the following steps: determining an RSSI value matrix of a plurality of positioning labels in a positioning area relative to each RFID reader-writer; acquiring a set of RSSI values from each RFID reader-writer to a target label in real time; determining Euclidean distances between the positioning labels and the target labels according to the matrix and the set, selecting the first K positioning labels with the minimum Euclidean distances as reference labels, and determining the position coordinates of each reference label and the coordinate weight of each reference label; calculating the coordinates of the target label according to the position coordinates and the coordinate weight of each reference label and a weight formula; the positioning label comprises a plurality of actual labels arranged in the positioning area and virtual labels inserted between the adjacent actual labels; and the RSSI value of the virtual label is obtained by utilizing a linear interpolation algorithm according to the RSSI value of the actual label.
Description
Technical Field
The invention belongs to the field of wireless positioning, and particularly relates to an article tracking and positioning method, device and medium based on a tag RSSI value.
Background
The sectional workshop assembly products and parts thereof are mainly subjected to logistics distribution in a tray mode, so that a complete logistics management system is constructed in the manufacturing and circulation processes of the assembly products and the parts thereof according to lean production theory requirements, logistics tracking monitoring is carried out by taking the tray as a basic unit, production and various management work are organized, and a comprehensive tray management mechanism is constructed. Based on industrial internet identification, the identity and state information of intermediate products, trays and logistics equipment are accurately identified, and the digital and standardized management of the whole logistics information is realized. Meanwhile, the flow direction and the production progress of intermediate products are tracked and monitored in real time in the production process, the restriction bottleneck of distribution of various intermediate products is found, fine management and control of logistics are promoted, and the process design efficiency and the intelligent level of ship section assembly are improved.
Therefore, how to accurately track and position the goods is a problem which is urgently solved at present.
Disclosure of Invention
The invention aims to provide an article tracking and positioning method, equipment and a medium based on a tag RSSI value, which can accurately track and position the position of goods.
In order to achieve the above object, the present invention provides an article tracking and positioning method based on tag RSSI values, comprising: determining an RSSI value matrix of a plurality of positioning labels in a positioning area relative to each RFID reader-writer, wherein the elements of the matrix are the RSSI values of each positioning label relative to each RFID reader-writer;
acquiring a set of RSSI values from each RFID reader-writer to a target tag in real time, wherein the target tag is arranged on an article to be positioned;
determining Euclidean distances between the positioning labels and the target labels according to the matrix and the set, selecting the positioning labels with the smallest first K Euclidean distances as reference labels, and determining the position coordinates of each reference label and the coordinate weight of each reference label;
calculating the coordinates of the target label according to the position coordinates and the coordinate weight of each reference label and a weight formula;
the positioning label comprises a plurality of actual labels arranged in a positioning area and a virtual label inserted between the adjacent actual labels;
and the RSSI value of the virtual tag is obtained by utilizing a linear interpolation algorithm according to the RSSI value of the actual tag.
In an alternative, the weight formula is:
wherein the content of the first and second substances,
x is the abscissa of the target tag, y is the ordinate of the target tag, X'iIs the abscissa, y 'of the selected K reference tags'iThe ordinate of the selected K reference labels; omegaiIs the coordinate weight, E'iIs the euclidean distance of the reference tag and the target tag.
In an alternative, the calculation formula of the euclidean distance is as follows:
rj represents the RSSI value of the jth RFID reader-writer from the target label; rij represents the RSSI value from the jth reader to the ith reference tag.
In an alternative, the linear interpolation algorithm includes:
RSSIlh,i＝∑j(wj*RSSIlh,ij)
wj＝(10Nij/ln(10)dlh,i)
wherein N isijIs a set value; TRSSIijThe RSSI value of the jth actual tag adjacent to the virtual tag to the ith reader-writer is represented; dijThe distance between the jth actual label and the ith reader-writer is represented; dlh,iRepresenting the distance between the virtual tag and the ith reader-writer; w is ajRepresenting the weight.
In an alternative, the linear interpolation algorithm includes: lagrange interpolation algorithm.
In an alternative, the actual tags and the virtual tags are distributed in an array form.
In an alternative scheme, if the fact that signals among a plurality of actual tags collide is detected, the reader-writer is controlled to send a signal stop instruction to the collided actual tags, the actual tags are enabled to stop transmitting signals to the reader-writer, and the actual tags are controlled to send signals again at random time nodes until the signals are successfully sent.
Another embodiment of the present invention also discloses an electronic device, including:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the above-described tag RSSI value based item tracking location method.
Another embodiment of the present invention further discloses a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the above method for tracking and locating an item based on a tag RSSI value.
The invention has the beneficial effects that:
according to the article tracking and positioning algorithm based on the RSSI value of the label, the virtual label is inserted between the actual labels by arranging the actual labels and the RFID reader-writers in the positioning area. And actually measuring the RSSI value of the actual tag relative to the RFID reader-writer, and acquiring the RSSI value of the virtual tag by utilizing a linear interpolation algorithm according to the RSSI value of the actual tag. Determining Euclidean distances between the positioning labels and the target labels, selecting the first K positioning labels with the minimum Euclidean distance as reference labels, and calculating the coordinates of the target labels according to a weight formula and the position coordinates and coordinate weight of each reference label.
The invention solves the problem that a single positioning technology cannot adapt to the complex environment of the ship sectional construction process, strengthens the positioning of intermediate products and pallets and the state information acquisition of logistics equipment based on the positioning label mixed positioning technology, realizes the logistics information control related to the assembled products and parts thereof, tracks the centralized distribution state in real time, improves the logistics control level, refines the logistics control granularity and supports the active material mode.
The present invention has other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following detailed description, which are incorporated herein, and which together serve to explain certain principles of the invention.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 is a schematic diagram of an article tracking and locating method based on tag RSSI values according to an embodiment of the invention.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.
An embodiment of the present invention provides an article tracking and positioning method based on a tag RSSI value, including:
determining an RSSI value matrix of a plurality of positioning labels in a positioning area relative to each RFID reader-writer, wherein the elements of the matrix are the RSSI values of each positioning label relative to each RFID reader-writer;
acquiring a set of RSSI values from each RFID reader-writer to a target tag in real time, wherein the target tag is arranged on an article to be positioned;
determining Euclidean distances between the positioning labels and the target labels according to the matrix and the set, selecting the positioning labels with the smallest first K Euclidean distances as reference labels, and determining the position coordinates of each reference label and the coordinate weight of each reference label;
calculating the coordinates of the target label according to the position coordinates and the coordinate weight of each reference label and a weight formula;
the positioning label comprises a plurality of actual labels arranged in a positioning area and a virtual label inserted between the adjacent actual labels;
and the RSSI value of the virtual tag is obtained by utilizing a linear interpolation algorithm according to the RSSI value of the actual tag.
In one embodiment, the weight formula is:
wherein the content of the first and second substances,
x is the abscissa of the target tag, y is the ordinate of the target tag, X'iIs the abscissa, y 'of the selected K reference tags'iThe ordinate of the selected K reference labels; omegaiAnd Ei is the Euclidean distance between the reference label and the target label.
In one embodiment, the calculation formula of the euclidean distance is:
rj represents the RSSI value of the jth RFID reader-writer from the target label; rij represents the RSSI value from the jth reader to the ith reference tag.
In one embodiment, the linear interpolation algorithm comprises:
RSSIlh,i＝∑j(wj*RSSIlh,ij)
wj＝(10Nij/ln(10)dlh,i)
wherein N isijIs a set value; TRSSIijThe RSSI value of the jth actual tag adjacent to the virtual tag to the ith reader-writer is represented; dijThe distance between the jth actual label and the ith reader-writer is represented; dlh,iRepresenting the distance between the virtual tag and the ith reader-writer; w is ajRepresenting the weight.
In one embodiment, the linear interpolation algorithm comprises: lagrange interpolation algorithm.
In one embodiment, the real tags and the virtual tags are distributed in an array.
In one embodiment, if it is detected that signals among a plurality of actual tags collide, the reader/writer is controlled to send a signal stop instruction to the collided actual tags, so that the actual tags stop transmitting signals to the reader/writer, and the actual tags are controlled to send signals again at random time nodes until the signals are successfully sent.
Specifically, the method is described below with reference to fig. 1 as a specific example.
Firstly, establishing a coordinate of a positioning area, deploying a plurality of RFID readers, arranging a target tag on an article to be positioned, deploying actual tags according to a certain rule (such as an array mode), regularly inserting virtual tags between adjacent actual tags (such as inserting the virtual tags at equal intervals according to the array mode), referring to fig. 1, dividing the positioning area into a plurality of partitions at certain intervals by using the actual positioning tags within the range of the positioning area, and arranging the virtual tags in the partitions. The RSSI value of each positioning tag relative to each RFID reader-writer is obtained through measurement, the RSSI value of the virtual tag is calculated through a linear interpolation method, the multiple reader-writers acquire the areas where the target tag possibly appears and take an intersection, then the final position of the target tag is calculated according to a weight formula, and then the coordinate value of the target tag is determined and stored in a database. In the positioning process, the actual label is the same as the target label sensing environment on the production element to be positioned, and the influence of the multipath effect on the positioning precision is reduced.
Due to the fact that mass production elements exist in a subsection workshop, a large number of labels are needed to be used for identity recognition, a plurality of independent recognizable areas are formed after readers are configured in each station area, multiple readers or multiple labels send signals simultaneously, and the problems of label collision or reader-writer collision can occur, including label-label collision, reader-label collision and reader-writer collision, and signal butt joint failure, label missing reading and the like can be caused. A common situation is tag-to-tag collision, where the signals overlap in the signal path. The problem of electronic tag collision must be solved for accurate identification and localization of production elements. If the reader-writer detects that the signals are mutually interfered, the reader-writer sends a command to the label to stop transmitting the signals to the reader-writer; after receiving the command signal, the tag stops sending information, enters a standby state within a random time period, and sends information to the reader-writer again only after the time period elapses. The lengths of the standby time segments of the tags are random, and the time for sending the signals to the reader-writer again is different, so that the possibility of collision is reduced. When the reader-writer successfully identifies a certain label, the reader-writer immediately issues a command to the label to enable the label to enter a dormant state. And other tags can always respond to the command sent by the reader-writer and repeatedly send information to the reader-writer, when the tags are identified, the tags enter a dormant state one by one, and the algorithm process is not finished until the reader-writer identifies all the tags in the working area of the reader-writer.
The RSSI value calculation method of the virtual label is as follows:
the length and width of the positioning area are set to be L multiplied by H, the positioning area is equally divided into a plurality of partitions by using an actual label, and the interval is set to be D. Virtual labels are arranged in the subareas in an array mode, the number of actual labels in each column in the X-axis direction is L/D, and the number of actual labels in each column in the Y-axis direction is H/D. Let virtual tag denote as V1hAnd if the distance between two adjacent virtual labels is d, L belongs to [1, L/d ]]；h∈[1,H/d]。
Let TlhRepresented as a virtual tag VlhAdjacent real tag TVjUsing the RSSI of the jth real tag to calculate the virtual tag VlhCalculation formula of signal intensity transmitted to ith reader/writer, considering each real tag TVjInfluence of, virtual tag VlhTo the ith reader/writer RiThe signal strength calculation formula of (a) is:
wherein TRSSIijRepresentation and virtual tag VlhAdjacent jth real tag TVjTo the ith reader/writer RiThe signal strength of (a); n is a radical ofijIs a fixed number factor of a value interval, and the interval is generally [2,4 ]]；dijRepresenting the jth real tag TVjTo the ith reader-writer RiThe distance of (d); dlh,iRepresenting a virtual tag VlhAnd the ith reader-writer RiThe distance between them.
For virtual tag VlhAdjacent real tag TVjEach real tag TV of the setjAll will be to virtual tag VlhThe signal strength calculation of (a) has an effect. Virtual tag VlhTo the ith reader-writer RiThe composite value of the signal intensity is comprehensively evaluated by a weight formulalhSet of adjacent real tags TlhEach of the real tags TV injThe effect on the signal strength of the virtual tag. TV if real labeljFrom virtual tag VlhThe closer the position of (A), the virtual tag VlhTo the reader-writer RiSignal strength RSSI oflh,ijRSSI in virtual tag signal strengthlh，iThe greater the weight occupied. Calculating a weight value: omegaj＝(10Nij/ln(10)dlh,i)2Wherein d islh,iIs a virtual tag VlhTo the ith reader-writer RiThe distance of (c). Jth virtual tag VlhTo the reader-writer RiSignal strength RSSI oflh,iComprises the following steps:
RSSIlh,i＝∑j(ωj*RSSIlh,ij) (2)
the coordinate calculation method of the target label is as follows:
assuming that M readers, N reference tags and 1 target tag are deployed in the positioning area, the positions of the readers and the reference tags are known conditions, and the position of the ith reference tag is (Xi, Yi), i is 1, … … …, N, and the position of the target tag is (X, Y).
Firstly, M readers obtain the RSSI of N reference tags in a positioning area, and an RSSI matrix R of the reference tags may be defined as:
where Rij (i ═ 1, … … …, N; j ═ 1, … … …, M) denotes the RSSI of the ith reference tag from the jth reader/writer. After the RSSI matrix of the reference tag is determined, the reader-writer acquires the RSSI of the target tag, and the RSSI vector r of the target tag is defined as:
r＝[r1………rM] (4)
rj (j ═ 1, … … …, M) represents the signal strength RSSI of the target tag to the j reader/writer, and this signal strength is measured.
By calculating the euclidean distance between the RSSI of the reference tag and the RSSI of the target tag, a correlation matrix E is defined as:
ei (i is 1, … … …, N) represents the euclidean distance between the ith reference tag and the target tag, and the smaller Ei, the closer the RSSI of the target tag is to that of the ith reference tag, i.e., the closer the target tag is to the ith reference tag.
And calculating Euclidean distances between the target tag and the N reference tags RSSI, arranging the N Euclidean distances from small to large, and selecting the first K minimum Euclidean distances. The selected K nearest-neighbor reference tag position coordinates are (X'i，y′i) And i is 1, … … …, K, and the association degree of the K nearest reference labels and the target label is E'i，i＝1，………，K。
According to the magnitude of the degree of association, defining the weight of K reference tags at the position of the calculated target tag as follows:
E‘ithe smaller the weight ω of the reference tag, the closer the reference tag is to the target tagiThe larger.
According to the calculated weights of the K reference tags and the position coordinates of the K reference tags, the position coordinates of the target tag can be calculated in a weighted summation mode:
and installing a reader-writer at stations of processing links such as plate cutting, section processing, group groove/grinding/bending processing, jointed board/group/bulk grinding and the like, and collecting and binding signals of target tags of trays for material and processed product information, and associating carriers such as the trays with the material and intermediate product information. When the tracking of production elements such as trays, logistics vehicles and materials is started, initialization information is written into the target tag, and the contents of the segment building process and the required materials can be confirmed by reading the target tag in the next operation units. For carriers (trays and the like) for distribution of production line materials and intermediate products, target objects are bound by target labels for tracking and positioning and track tracing.
The embodiment equally divides the positioning area into a plurality of sections by using the actual labels in the positioning area. And setting a virtual label in each partition, and calculating the RSSI value by adopting a Lagrange interpolation algorithm. The calculation method divides a coordinate grid surrounded by actual tags into a plurality of partitions, further calculates the weight of each virtual tag by taking the signal intensity and the distance from each virtual tag to a reader-writer as input in each partition, and obtains the RSSI value of each virtual tag through weighting calculation. When the target label enters the positioning area, the RSSI of the target label and the RSSI of the reference label can be obtained, the reference label which is closest to the target label is preferably selected after comparison, and the coordinates of the target label are calculated.
Example 2
An embodiment of the present disclosure further provides an electronic device, including:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method for tag RSSI value based item tracking and locating as described above.
An electronic device according to an embodiment of the present disclosure includes a memory and a processor.
The memory is to store non-transitory computer readable instructions. In particular, the memory may include one or more computer program products that may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. The volatile memory may include, for example, Random Access Memory (RAM), cache memory (cache), and/or the like. The non-volatile memory may include, for example, Read Only Memory (ROM), hard disk, flash memory, etc.
The processor may be a Central Processing Unit (CPU) or other form of processing unit having data processing capabilities and/or instruction execution capabilities, and may control other components in the electronic device to perform desired functions. In one embodiment of the disclosure, the processor is configured to execute the computer readable instructions stored in the memory.
Those skilled in the art should understand that, in order to solve the technical problem of how to obtain a good user experience, the present embodiment may also include well-known structures such as a communication bus, an interface, and the like, and these well-known structures should also be included in the protection scope of the present disclosure.
Example 3
Embodiments of the present disclosure provide a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the above-mentioned method for tracking and locating an item based on a tag RSSI value.
A computer-readable storage medium according to an embodiment of the present disclosure has non-transitory computer-readable instructions stored thereon. The non-transitory computer readable instructions, when executed by a processor, perform all or a portion of the steps of the methods of the embodiments of the disclosure previously described.
The computer-readable storage media include, but are not limited to: optical storage media (e.g., CD-ROMs and DVDs), magneto-optical storage media (e.g., MOs), magnetic storage media (e.g., magnetic tapes or removable disks), media with built-in rewritable non-volatile memory (e.g., memory cards), and media with built-in ROMs (e.g., ROM cartridges).
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (9)
1. An article tracking and positioning method based on tag RSSI value, characterized in that the method comprises:
determining an RSSI value matrix of a plurality of positioning labels in a positioning area relative to each RFID reader-writer, wherein the elements of the matrix are the RSSI values of each positioning label relative to each RFID reader-writer;
acquiring a set of RSSI values from each RFID reader-writer to a target tag in real time, wherein the target tag is arranged on an article to be positioned;
determining Euclidean distances between the positioning labels and the target labels according to the matrix and the set, selecting the positioning labels with the smallest first K Euclidean distances as reference labels, and determining the position coordinates of each reference label and the coordinate weight of each reference label;
calculating the coordinates of the target label according to the position coordinates and the coordinate weight of each reference label and a weight formula;
the positioning label comprises a plurality of actual labels arranged in a positioning area and a virtual label inserted between the adjacent actual labels;
and the RSSI value of the virtual label is obtained by utilizing a linear interpolation algorithm according to the RSSI value of the actual label.
2. The item tracking and positioning method based on tag RSSI value of claim 1, wherein the weight formula is:
wherein the content of the first and second substances,
x is the abscissa of the target tag, y is the ordinate of the target tag, X'iIs the abscissa, y 'of the selected K reference tags'iThe ordinate of the selected K reference labels; omegaiIs the coordinate weight, E'iIs the euclidean distance of the reference tag and the target tag.
3. The item tracking and positioning method based on tag RSSI values of claim 2, wherein the calculation formula of the Euclidean distance is:
rj represents the RSSI value of the jth RFID reader-writer from the target label; rij represents the RSSI value from the jth reader to the ith reference tag.
4. The method of claim 3, wherein the linear interpolation algorithm comprises:
RSSIlh,i＝∑j(wj*RSSIlh,ij)
wj＝(10Nij/ln(10)dlh,i)
wherein N isijIs a set value; TRSSIijThe RSSI value of the jth actual tag adjacent to the virtual tag to the ith reader-writer is represented; dijThe distance between the jth actual label and the ith reader-writer is represented; dlh,iRepresenting the distance between the virtual tag and the ith reader-writer; w is ajRepresenting the weight.
5. The item tracking and positioning method based on tag RSSI values of claim 1, wherein the linear interpolation algorithm comprises: lagrange interpolation algorithm.
6. The method of claim 1, wherein the actual tags and the virtual tags are distributed in an array.
7. The method as claimed in claim 1, wherein if a collision of signals among a plurality of actual tags is detected, the reader/writer is controlled to send a signal stop command to the collided actual tags to stop transmitting signals to the reader/writer, and the actual tags are controlled to re-transmit signals at random time nodes until the signals are successfully transmitted.
8. An electronic device, characterized in that the electronic device comprises:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to cause the at least one processor to perform the method for tag RSSI value based item tracking location according to any of claims 1-7.
9. A non-transitory computer readable storage medium storing computer instructions for causing a computer to perform the method for tag RSSI value based item tracking and locating according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210133961.4A CN114488003A (en) | 2022-02-14 | 2022-02-14 | Article tracking and positioning method, device and medium based on tag RSSI (received Signal Strength indicator) value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210133961.4A CN114488003A (en) | 2022-02-14 | 2022-02-14 | Article tracking and positioning method, device and medium based on tag RSSI (received Signal Strength indicator) value |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114488003A true CN114488003A (en) | 2022-05-13 |
Family
ID=81481090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210133961.4A Pending CN114488003A (en) | 2022-02-14 | 2022-02-14 | Article tracking and positioning method, device and medium based on tag RSSI (received Signal Strength indicator) value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114488003A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116047399A (en) * | 2023-04-03 | 2023-05-02 | 深圳市成为信息股份有限公司 | Method and related device for precisely positioning tag by UHF handheld terminal |
-
2022
- 2022-02-14 CN CN202210133961.4A patent/CN114488003A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116047399A (en) * | 2023-04-03 | 2023-05-02 | 深圳市成为信息股份有限公司 | Method and related device for precisely positioning tag by UHF handheld terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210056505A1 (en) | Method for tracking stock level within a store | |
| Morenza-Cinos et al. | Stock visibility for retail using an RFID robot | |
| JP5490016B2 (en) | Systems, methods, and computer programs (systems and methods) for determining RFID-tagged items contained within a given area | |
| US11623825B2 (en) | CPS-based smart forklift truck management device | |
| CN100485709C (en) | Rfid sensor array | |
| US7333018B2 (en) | Asset location system with enhanced accuracy | |
| CN1924914B (en) | Tracking assets between tissue in alliance organization | |
| US20060197652A1 (en) | Method and system for proximity tracking-based adaptive power control of radio frequency identification (RFID) interrogators | |
| CN108762251B (en) | Library robot positioning and navigation method | |
| US20080030335A1 (en) | TAG extracting device, TAG extracting method, and computer product | |
| US20150066550A1 (en) | Flow line data analysis device, system, non-transitory computer readable medium and method | |
| CN101167082A (en) | RFID tag sensitivity | |
| CN101014962A (en) | Rfid system performance monitoring | |
| JP5915731B2 (en) | Flow line data analysis apparatus, system, program and method | |
| CN102855457A (en) | Door-type radio frequency identification (RFID) multi-antenna deployment system and method based on intelligent prediction | |
| Morenza-Cinos et al. | Development of an RFID inventory robot (AdvanRobot) | |
| CN114488003A (en) | Article tracking and positioning method, device and medium based on tag RSSI (received Signal Strength indicator) value | |
| WO2011114474A1 (en) | Assessment device, assessment system, assessment method and computer program | |
| US20160349350A1 (en) | Product and equipment location and automation system and method | |
| CN109325558B (en) | Method and system for allocating metal building material templates for warehouse entry and exit | |
| Ma | An industry 4.0 technologies-driven warehouse resource management system | |
| KR101185678B1 (en) | The method for tracking the position and posture of a vehicle, a material, or a block by averaging coordinates of RFID Tags | |
| Xia et al. | Enabling a mobile robot for autonomous RFID-based inventory by multilayer mapping and ACO-enhanced path planning | |
| Veiseh et al. | RFID as an enabler of maintenance management | |
| CN101751539B (en) | Method for estimating number of tags and reader |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |