CN103712618A - Non-ranging quick people positioning method and system thereof - Google Patents
Non-ranging quick people positioning method and system thereof Download PDFInfo
- Publication number
- CN103712618A CN103712618A CN201310710589.XA CN201310710589A CN103712618A CN 103712618 A CN103712618 A CN 103712618A CN 201310710589 A CN201310710589 A CN 201310710589A CN 103712618 A CN103712618 A CN 103712618A
- Authority
- CN
- China
- Prior art keywords
- reader
- positioning
- label
- ranging
- server
- 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.)
- Granted
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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention relates to a positioning method, in particular to a non-ranging quick people positioning method and a system of the method. People can be positioned and tracked on indoor and outdoor sites, the array of a reader is arranged in a crossed arrangement manner, the system determines positioning points by inquiring a preset mapping table, and the positioning points are displayed and stored. The non-ranging quick people positioning method and the system have the beneficial effects that firstly, the positioning precision is greatly promoted under the condition that a ranging manner is not adopted, the resource consumption of various ranging algorithms to the system is reduced, the response speed is improved, and the limitation of environmental factors to ranging positioning does not exist; secondly, the whole system can tailor the positioning area according to the project requirements on the precision and the cost, and the whole system has extremely high elasticity; and thirdly, with the manner that semi-active electronic tags are combined with low frequency activators, the problems of high energy consumption of active labels and short ranging distance of passive tags are effectively solved, and the whole performance of the system is improved.
Description
Technical field
The present invention relates to localization method, relate in particular to a kind of non-ranging personnel's method for rapidly positioning and system thereof.
Background technology
Fast development along with technology of Internet of things, the common direction that turns future urban development in wisdom city, important step as wisdom urban development, the demand of personnel positioning technology also day by day increases, although there is multiple personnel's targeting scheme on market, but each targeting scheme is all subject to the impact of environmental factor, so personnel positioning product in the market can not be applicable to all demand environments.
The most known locator meams is GPS location at present, and as a kind of comparatively ripe location technology, GPS can meet multiple location requirement, and precision is also more and more higher.But owing to needing the technical characteristic of receiving satellite signal, GPS is not also suitable for indoor positioning.That as Internet of Things, locates is a kind of, and the location technology based on radio-frequency (RF) identification has started to be adopted widely as a kind of advanced person's indoor positioning scheme.
Targeting scheme based on radio-frequency (RF) identification roughly can be divided into two classes: range finding and non-ranging.Locator meams based on non-ranging judges by judging whether being communicated with between check point and target whether target enters surveyed area, this mode does not need complicated algorithm, not high to the requirement of system resource yet, but positioning precision is lower, can only determines and roughly be positioned at check point covering area range.Locator meams based on range finding comprises again the modes such as RSSI, DOA, TOA, and their common ground is that positioning precision is higher, but is also subject to respectively the constraint of environment, algorithm, cost etc., and the scope of application is not extensive.
Summary of the invention
The present invention overcomes above-mentioned weak point, a kind of non-ranging personnel's method for rapidly positioning is provided, can in the situation that not needing location algorithm and increase other resources to support, realization than the higher positioning precision of existing non-ranging location technology, be applicable in the complicated localizing environment of indoor and outdoor mixing.
The present invention provides a kind of non-ranging personnel's quick positioning system in addition, and this system can be applicable to various accuracy requirement, according to accuracy requirement, carries out model construction, and dirigibility is strong and economize on resources.
The technical solution adopted for the present invention to solve the technical problems is:: a kind of non-ranging personnel's method for rapidly positioning, comprises the following steps:
1) in specific region, adopt staggered form layout type to arrange several readers, specific region is divided into some zonules, the covering radius of reader is N rice; Reference label is placed at intersection point place in reader cut zone, and reference label covering radius is M rice, M<N;
2) take intersection center sets up coordinate system as initial point, and several zonules are numbered, and according to the logical relation of each numbering and its corresponding reader coverage condition, makes a location mapping table;
3) label to be positioned sends positioning request information;
4) the reader transmission reading information that receives positioning request information is to server, and server, according to the reader combination status inquiry location mapping table that receives positioning request information simultaneously, is determined locating area;
5) determine after locating area, then according to reference label, the identification situation of label to be positioned in region is carried out to coordinate setting, coordinate setting is sent to server and preserves, show.
Described step 5) specifically comprises the following steps:
5.1) there is a reference label on each summit of determining locating area, and reference label is divided into less region by locating area, determines that a central point is estimated location point in each region;
5.2) estimated location point is made an estimated location mapping table with the logical relation of corresponding reference label coverage condition;
5.3) server, according to the reference label combined situation inquiry estimated location mapping table that receives positioning request information simultaneously, is determined estimated location point, the coordinate setting of estimated location point is sent to server and preserves, show.
The positioning precision of the locating area that described step 4) reads is 2N/3.
The positioning precision that described step 5) reads is 2N/9.
Non-ranging personnel's quick positioning system, comprising: label to be positioned, low frequency activator appliance, reader, reference label, POE power-supply unit, intelligent gateway device, server; Described server comprises Control Server, database server; Described label to be positioned is for identity location recognition, and effective propagation path is N rice; Low frequency activator appliance is placed in reader overlay area, for activating label to be positioned; Reader is used for reading label to be positioned, and effectively covering radius is N rice; Reference label is placed in the intersection point of reader overlay area, has the function that forwards card reader transfer instruction, effective propagation path M rice, M<N; POE power-supply unit: be that lan device is powered as POE system; The levels that intelligent gateway device is network provides the services such as route and forwarding; Database server is for data such as the personal information of store electrons label, personnel positions information; Control Server provides a perfect personnel positioning tracker in conjunction with application software, realizes the bookkeepings such as interpolation deletion of personal information inquiry, position enquiring, track record, personal information.
Beneficial effect of the present invention is: 1, the present invention is not in the situation that adopt the positioning precision that makes of distance measuring method significantly to be promoted, can meet the requirement of most of location project to precision, due to what adopt, it is the mode of list logical mappings, make system inquiry judging fast, reduced the resource consumption of various location algorithms to system, improve reaction velocity, also do not had the restriction of environmental factor to range finding location; 2, the present invention cuts apart to come refinement locating area mutually by reader matrix, characteristic based on such, the layout type of whole matrix can carry out cutting arbitrarily to the demand of precision according to project, in the use procedure of whole system, if need to adjust locating area scope, can be by increasing or deleting reader node under the prerequisite that does not change integral layout, and the mode of revising mapping table realizes online adjustment, whole system has very high elasticity; 3, the present invention adopts the mode that half active electronic label and low frequency activator appliance combine, and efficiently solves active label energy consumption height and the short problem of passive label decipherment distance, has improved the overall performance of system.
Accompanying drawing explanation
Fig. 1 is the layout of the reader in locating area of the present invention;
Fig. 2 is the complete split graph in a reader region of the present invention;
Fig. 3 is that in Fig. 1, the reader in five adjacent reader cross bearing regions is cut apart figure;
Fig. 4 is the layout of the reference label in locating area numbering 3 in Fig. 3;
Fig. 5 is system architecture diagram of the present invention;
Fig. 6 is system flowchart of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further, but protection scope of the present invention is not limited in this:
Embodiment 1: as shown in Figure 5, the invention provides a kind of non-ranging personnel system of location fast, by label to be positioned, low frequency activator appliance, reader, reference label, POE power-supply unit, intelligent gateway device, Control Server, database servers group, become.Reader array layout can be expanded according to the size of locating area, whole system can be carried out cutting to the requirement of precision, cost according to project, after label to be positioned is activated by low frequency activator appliance, sending Location Request is received by reader, the mapping table that system fast query is default, determines the elements of a fix.
Label to be positioned is for identity location recognition, and effective propagation path is 90 meters; Low frequency activator appliance is placed in reader overlay area, for activating label to be positioned; Reader is used for reading label to be positioned, and effectively covering radius is 90 meters; Reference label is placed in the intersection point of reader overlay area, has the function that forwards card reader transfer instruction, 50 meters of effective propagation paths; POE power-supply unit: be that lan device is powered as POE system; The levels that intelligent gateway device is network provides the services such as route and forwarding; Database server is for data such as the personal information of store electrons label, personnel positions information; Control Server provides a perfect personnel positioning tracker in conjunction with application software, realizes the bookkeepings such as interpolation deletion of personal information inquiry, position enquiring, track record, personal information.
Described label to be positioned adopts half active electronic label, at ordinary times in dormant state, by arranging that within the scope of reader low frequency activator appliance activates label, when carrying after the personnel of label to be positioned enter locating area, by low frequency activator appliance, activate label, make it in running order, then by reader reading tag information.The mode that adopts half active electronic label and low frequency activator appliance to combine, efficiently solves active label energy consumption height and the short problem of passive label decipherment distance, has improved the overall performance of system, can be adapted to the locating areas of different sizes.
Based on said system, a kind of non-ranging personnel's method for rapidly positioning, as shown in Figure 6, comprises the following steps:
1) in specific region, adopt staggered form layout type to arrange several readers, specific region is divided into some zonules, the covering radius of reader is N rice; Reference label is placed at intersection point place in reader cut zone, and reference label covering radius is M rice, M<N;
2) take intersection center sets up coordinate system as initial point, and several zonules are numbered, and according to the logical relation of each numbering and its corresponding reader coverage condition, makes a location mapping table;
3) label to be positioned sends positioning request information;
4) the reader transmission reading information that receives positioning request information is to server, and server, according to the reader combination status inquiry location mapping table that receives positioning request information simultaneously, is determined locating area;
5) determine after locating area, then according to reference label, the identification situation of label to be positioned in region carried out to coordinate setting, coordinate setting is sent to server and preserves, show, specifically comprise the following steps:
5.1) there is a reference label on each summit of determining locating area, and reference label is divided into less region by locating area, determines that a central point is estimated location point in each region;
5.2) estimated location point is made an estimated location mapping table with the logical relation of corresponding reference label coverage condition;
5.3) server, according to the reference label combined situation inquiry estimated location mapping table that receives positioning request information simultaneously, is determined estimated location point, the coordinate setting of estimated location point is sent to server and preserves, show.
Below said method is specifically described.Take the rectangular area of 180 meters * 360 meters is locating area, and the rectangular centre point of take is set up cartesian coordinate system as initial point, and in the mode shown in 1 in scheming, 14 readers is arranged in to whole locating area uniformly.Same a line, same listing, the distance between adjacent reader is 120 meters, thereby can show that the bee-line between reader is between two
it referring to Fig. 2, is the complete split graph in single reader region, owing to adopting the mode of reader intersection layout, make each reader scope overlapped, thereby the overlay area of each reader is divided into several zonules, a reader is divided into 13 symmetrical regions completely, thereby locating area is narrowed down to less regional extent.
The crossover range of choosing five readers in A place in Fig. 1 is example, take intersection center sets up coordinate system as initial point, as shown in Figure 3, reader coordinate is respectively: A (120,-20), B (60,40), C (0,-20), D (60,40), E (120,-20), the region after mutually cutting apart between reader A-E is numbered, is respectively 1-15, because each border circular areas is finally separated into three zonules about equally on a diameter, positioning precision is now 60 meters of A1 ≈.
According to the mapping relations between numbering and reader, make location mapping table, in Table 1:
| Zone number | Mapping relations |
| 1 | |
| 2 | |
| 3 | |
| 4 | A&C |
| 5 | |
| 6 | B&C |
| 7 | |
| 8 | |
| 9 | B&C&D |
| 10 | |
| 11 | |
| 12 | C&E |
| 13 | |
| 14 | D&E |
| 15 | D |
Table 1 location mapping table
When carrying row of labels to be positioned, staff proceeds in numbering 3 regions, now label to be positioned is activated by low frequency activator appliance, label to be positioned sends Location Request, its transmission effective range is 60 meters, reader A, reader B, reader C receive Location Request simultaneously, and send reading information to Control Server, and location mapping table is transferred and inquired about to Control Server from database server, draw A & B & C, the zone number 3 in the mapping table of corresponding location.
After determining personnel region, according to reference label, the identification situation of label to be positioned in region is carried out to coordinate setting again, as shown in Figure 5, each summit of irregular area layout reference label n0, reference label n1, reference label n2 in zone number 3, thereby region 3 is divided into less region, then in each irregular area, determine a central point x1-x4 and make estimated location mapping table, if it is x0 that now judgement reads without reference label the position of estimating label to be measured, its coordinate is (60,0), if have reference label to read, basis
Mapping table is respectively estimation point x1-x4, and its estimation coordinate is respectively: x1 (60,10), x2 (70 ,-10), x3 (60 ,-15), x4 (50 ,-10).According to estimated location point, make an estimated location mapping table with the logical relation of corresponding reference label coverage condition, in Table 2:
| Mapping relations | Estimated location point | Estimation coordinate |
| Nothing | x0 | (-60,0) |
| n0 | x1 | (-60,10) |
| n1 | x2 | (-70,-10) |
| n1&n2 | x3 | (-60,-15) |
| n2 | x4 | (-50,-10) |
Table 2 estimated location mapping table
Now, reference label n1, reference label n2 receive the Location Request that label to be positioned sends simultaneously, determine that estimated location point is x3, and estimation coordinate is (60 ,-15); Each irregular area is divided into three zonules in one direction, and positioning precision is now A2 ≈ N/9=20 rice, the coordinate information obtaining is sent to application server end and shows, data deposit database server in.
According to the demand of actual location precision, can, by increasing reader and reference label, revise location mapping table and estimated location mapping table and reach the object of adjusting positioning strategy.System adopts the mode of list logical mappings, and inquiry judging, has reduced the resource consumption of various location algorithms to system fast, has improved reaction velocity, has also avoided the restriction of environmental factor to range finding location simultaneously.Thereby reach quick location, object that registration is adjustable.
Described in above, be specific embodiments of the invention and the know-why used, if the change of doing according to conception of the present invention, when its function producing does not exceed spiritual that instructions and accompanying drawing contain yet, must belong to protection scope of the present invention.
Claims (5)
1. non-ranging personnel's method for rapidly positioning, is characterized in that comprising the following steps:
1) in specific region, adopt staggered form layout type to arrange several readers, specific region is divided into some zonules, the covering radius of reader is N rice; Reference label is placed at intersection point place in reader cut zone, and reference label covering radius is M rice, M<N;
2) take intersection center sets up coordinate system as initial point, and several zonules are numbered, and according to the logical relation of each numbering and its corresponding reader coverage condition, makes a location mapping table;
3) label to be positioned sends positioning request information;
4) the reader transmission reading information that receives positioning request information is to server, and server, according to the reader combination status inquiry location mapping table that receives positioning request information simultaneously, is determined locating area;
5) determine after locating area, then according to reference label, the identification situation of label to be positioned in region is carried out to coordinate setting, coordinate setting is sent to server and preserves, show.
2. a kind of non-ranging personnel's method for rapidly positioning according to claim 1, is characterized in that, described step 5) specifically comprises the following steps:
5.1) there is a reference label on each summit of determining locating area, and reference label is divided into less region by locating area, determines that a central point is estimated location point in each region;
5.2) estimated location point is made an estimated location mapping table with the logical relation of corresponding reference label coverage condition;
5.3) server, according to the reference label combined situation inquiry estimated location mapping table that receives positioning request information simultaneously, is determined estimated location point, the coordinate setting of estimated location point is sent to server and preserves, show.
3. a kind of non-ranging personnel's method for rapidly positioning according to claim 2, is characterized in that, the positioning precision of the locating area that described step 4) reads is 2N/3.
4. a kind of non-ranging personnel's method for rapidly positioning according to claim 3, is characterized in that, the positioning precision that described step 5) reads is 2N/9.
5. a kind of non-ranging personnel's quick positioning system of realizing said method, is characterized in that comprising: label to be positioned, low frequency activator appliance, reader, reference label, POE power-supply unit, intelligent gateway device, server; Described server comprises Control Server, database server; Described label to be positioned is for identity location recognition, and effective propagation path is N rice; Low frequency activator appliance is placed in reader overlay area, for activating label to be positioned; Reader is used for reading label to be positioned, and effectively covering radius is N rice; Reference label is placed in the intersection point of reader overlay area, has the function that forwards card reader transfer instruction, effective propagation path M rice, M<N; POE power-supply unit: be that lan device is powered as POE system; The levels that intelligent gateway device is network provides the services such as route and forwarding; Database server is for data such as the personal information of store electrons label, personnel positions information; Control Server provides a perfect personnel positioning tracker in conjunction with application software, realizes the bookkeepings such as interpolation deletion of personal information inquiry, position enquiring, track record, personal information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310710589.XA CN103712618B (en) | 2013-12-20 | 2013-12-20 | A kind of non-ranging personnel's method for rapidly positioning and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310710589.XA CN103712618B (en) | 2013-12-20 | 2013-12-20 | A kind of non-ranging personnel's method for rapidly positioning and system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103712618A true CN103712618A (en) | 2014-04-09 |
| CN103712618B CN103712618B (en) | 2016-07-13 |
Family
ID=50405780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310710589.XA Active CN103712618B (en) | 2013-12-20 | 2013-12-20 | A kind of non-ranging personnel's method for rapidly positioning and system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103712618B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105303482A (en) * | 2015-06-26 | 2016-02-03 | 苏州木兰电子科技有限公司 | Semi active RFID-based hotel staff positioning and management system |
| CN110297493A (en) * | 2019-07-11 | 2019-10-01 | 磐典商务服务(上海)有限公司 | It is a kind of based on robot to the method for tracking and positioning and its device of electronic tag |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320513A (en) * | 2019-07-05 | 2019-10-11 | 南京简睿捷软件开发有限公司 | A kind of production factors positioning system and method for large area workshop based on RFID |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101191833A (en) * | 2007-12-12 | 2008-06-04 | 北京航空航天大学 | Radio frequency recognition indoor position finding and detection method based on receiving signal intensity |
| US20080143482A1 (en) * | 2006-12-18 | 2008-06-19 | Radiofy Llc, A California Limited Liability Company | RFID location systems and methods |
| CN101349745A (en) * | 2008-09-06 | 2009-01-21 | 黄以华 | Wireless radio frequency positioning method using region partitioning algorithm |
| CN102111876A (en) * | 2011-02-24 | 2011-06-29 | 华为技术有限公司 | Method and device for selecting reference labels used for location |
| US20110193746A1 (en) * | 2010-02-09 | 2011-08-11 | National Pingtung University Of Science And Technology | Method of Positioning RFID Tags |
| CN102736061A (en) * | 2012-05-31 | 2012-10-17 | 四川研成通信科技有限公司 | RFID (Radio Frequency Identification )-based grid positioning system and method |
-
2013
- 2013-12-20 CN CN201310710589.XA patent/CN103712618B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080143482A1 (en) * | 2006-12-18 | 2008-06-19 | Radiofy Llc, A California Limited Liability Company | RFID location systems and methods |
| CN101191833A (en) * | 2007-12-12 | 2008-06-04 | 北京航空航天大学 | Radio frequency recognition indoor position finding and detection method based on receiving signal intensity |
| CN101349745A (en) * | 2008-09-06 | 2009-01-21 | 黄以华 | Wireless radio frequency positioning method using region partitioning algorithm |
| US20110193746A1 (en) * | 2010-02-09 | 2011-08-11 | National Pingtung University Of Science And Technology | Method of Positioning RFID Tags |
| CN102111876A (en) * | 2011-02-24 | 2011-06-29 | 华为技术有限公司 | Method and device for selecting reference labels used for location |
| CN102736061A (en) * | 2012-05-31 | 2012-10-17 | 四川研成通信科技有限公司 | RFID (Radio Frequency Identification )-based grid positioning system and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105303482A (en) * | 2015-06-26 | 2016-02-03 | 苏州木兰电子科技有限公司 | Semi active RFID-based hotel staff positioning and management system |
| CN110297493A (en) * | 2019-07-11 | 2019-10-01 | 磐典商务服务(上海)有限公司 | It is a kind of based on robot to the method for tracking and positioning and its device of electronic tag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103712618B (en) | 2016-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Real-time locating systems using active RFID for Internet of Things | |
| US20170079001A1 (en) | Radio Beacon for Direction Detection | |
| EP3262880B1 (en) | Localization of a mobile device | |
| CN108307366A (en) | Method and system for location estimation | |
| JP2017509864A (en) | Control of beaconing in positioning system | |
| CN101576616A (en) | Indoor positioning system based on RFID technology | |
| CN103327449B (en) | Moving target locating method and system based on ZigBee network | |
| US9226114B2 (en) | Method and system of incorporating passive-based proximity data for position determination | |
| CN103399295A (en) | Location implementation method based on RFID (Radio Frequency Identification) indoor positioning device | |
| EP2357774A1 (en) | Building a location based service reference database based on encountered RFID tags | |
| CN104330770B (en) | A kind of Precise Position System based on ultrahigh frequency RFID electronic tag | |
| CN103969623A (en) | RFIC indoor-positioning method based on PSO | |
| CN103049772A (en) | Indoor positioning tracking system and method based on passive radiofrequency identification technology | |
| CN106291461B (en) | A kind of method, apparatus, server and the system of RFID indoor positioning | |
| CN102938932B (en) | Method for improving capacity of wireless positioning system on basis of arrival time | |
| CN101975938A (en) | Five-dimensional positioning method and system based on radio-frequency signals | |
| CN101996256A (en) | Searching method, mobile information terminal integrated subsystem and searching system | |
| CN103712618A (en) | Non-ranging quick people positioning method and system thereof | |
| CN106650529B (en) | A kind of manufacture RFID of Internet-of-things reader node deployment optimization method | |
| CN206096431U (en) | Indoor positioning system based on radio frequency identification technology | |
| Adkar et al. | Bluetooth beacon applications in retail market | |
| CN109348465A (en) | Internet localization method based on Internet of Things perception | |
| CN104678358A (en) | Positioning method, positioning device and positioning system | |
| TWI583984B (en) | System and method for regional positioning | |
| CN102542230A (en) | Passive electronic tag two-dimensional positioning method based on radio frequency identification (RFID) technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |