CN107944317B - Ultrahigh frequency RFID (radio frequency identification) reading system and misreading removal method thereof - Google Patents
Ultrahigh frequency RFID (radio frequency identification) reading system and misreading removal method thereof Download PDFInfo
- Publication number
- CN107944317B CN107944317B CN201711187289.2A CN201711187289A CN107944317B CN 107944317 B CN107944317 B CN 107944317B CN 201711187289 A CN201711187289 A CN 201711187289A CN 107944317 B CN107944317 B CN 107944317B
- Authority
- CN
- China
- Prior art keywords
- misreading
- rfid
- ultrahigh frequency
- label
- article
- 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.)
- Active
Links
Images
Classifications
-
- 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
- G06K7/10118—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 the sensing being preceded by at least one preliminary step
-
- 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
- G06K7/10198—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 setting parameters for the interrogator, e.g. programming parameters and operating modes
- G06K7/10227—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 setting parameters for the interrogator, e.g. programming parameters and operating modes loading programming parameters or programs into the interrogator, e.g. for configuring the interrogator
Abstract
The invention discloses an ultrahigh frequency RFID (radio frequency identification) reading system and a misreading removal method thereof, wherein the reading system comprises a control host, an ultrahigh frequency RFID reader and an RFID antenna; the control host is connected with the ultrahigh frequency RFID reader through an Ethernet interface or a serial port; the ultrahigh frequency RFID reader is also connected with the RFID antenna through a radio frequency feeder; the RFID antenna also performs information transmission with the RFID tag through electromagnetic wave signals. The control host is provided with a parameter learning module and a misreading removal module. The misreading removal method of the system comprises a parameter learning process and a misreading removal process. The invention can obviously improve the accuracy of reading the article label by the ultrahigh frequency RFID reader, and fundamentally solves the problem of misreading of the RFID label.
Description
Technical Field
The invention relates to a system and a method, in particular to an ultrahigh frequency RFID (radio frequency identification) reading system and a misreading removal method thereof.
Background
With the rapid development of scientific technology, the Radio Frequency Identification (RFID) technology is used as an important branch of the internet of things technology, and is increasingly widely applied by virtue of the characteristics of non-contact, long-distance and simultaneous reading of multiple tags. However, in applying the uhf RFID technology to a specific industry, there are various application conditions and requirements, such as: when the bayonet type RFID reading equipment for the warehouse is used for reading the tags of the articles in and out, the tags are different in types and multiple in quantity, the reading distance is far and near inconsistent, and the tags of the articles exist in the warehouse, so that the tags of the articles in the warehouse can be read by mistake in the reading process, and the tags of the articles which are actually passed in and out can not be accurately judged. This situation is currently handled by adjusting the rf power of the antenna, but the problem of misreading cannot be solved fundamentally.
Disclosure of Invention
In order to overcome the defects of the technology, the invention provides an ultrahigh frequency RFID (radio frequency identification) reading system and a misreading removal method thereof.
In order to solve the technical problems, the invention adopts the technical scheme that: an ultrahigh frequency RFID reading system and a misreading removal method thereof,
the ultrahigh frequency RFID reading system comprises a control host, an ultrahigh frequency RFID reader and an RFID antenna; the control host is connected with the ultrahigh frequency RFID reader through an Ethernet interface or a serial port and is used for exchanging commands with the ultrahigh frequency RFID reader and receiving the information of the article label read by the ultrahigh frequency RFID reader; the ultrahigh frequency RFID reader is also connected with the RFID antenna through a radio frequency feeder line and is used for radiating out radio frequency signals and receiving echo signals from the article tags, which are sensed by the RFID antenna; the RFID antenna also carries out information transmission with the RFID label through electromagnetic wave signals;
the misreading removal method of the ultrahigh frequency RFID recognition system comprises the following two processes:
i, parameter learning process:
installing and fixing the positions of the ultrahigh frequency RFID reader and the RFID antenna; starting a parameter learning module in the control host to enable a self-learning program in the module to learn the serial numbers and RSSI value information of the labels of the articles, wherein the specific learning method comprises the following steps:
placing each article label right in front of the RFID antenna or at a fixed position where the article label belongs to, and learning the serial number and RSSI value information of each article label; after learning is finished, storing the corresponding label number and the RSSI value into a database; the process is one-time learning and multiple use;
II, misreading and removing process:
firstly, an article label list to be put in and out of a warehouse is formulated on a control host, and then the control host sends a control instruction to start label reading, so that the article label number and the RSSI value which are read by an ultrahigh frequency RFID reader are obtained;
starting a misreading removal module in the control host, comparing the number and RSSI value of the read label with the learned related parameters in the database, and removing the misreading label; this process is invoked each time an entry is made and exited.
The RFID tags are fixedly arranged on corresponding articles in a sticking or binding mode and are used for electronizing the identity of each independent article to form corresponding article tags.
The item tag information includes a number and an RSSI value of the item tag.
The control host is provided with a parameter learning module and a misreading removal module; and the parameter learning module and the misreading removal module perform data interaction through database reading and writing.
The invention can obviously improve the accuracy of reading the article label by the ultrahigh frequency RFID reader, and fundamentally solves the problem of misreading of the RFID label.
Drawings
Fig. 1 is a block diagram of the overall structure of an ultrahigh frequency RFID reading system.
Fig. 2 is an overall flowchart of the parameter learning process.
FIG. 3 is an overall flow chart of the misread removal process.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The ultrahigh frequency RFID reading system shown in fig. 1 includes a control host, an ultrahigh frequency RFID reader, and an RFID antenna; the control host is connected with the ultrahigh frequency RFID reader through an Ethernet interface or a serial port and is used for exchanging commands with the ultrahigh frequency RFID reader and receiving the information of the article label read by the ultrahigh frequency RFID reader; the ultrahigh frequency RFID reader is also connected with the RFID antenna through a radio frequency feeder line and is used for radiating out radio frequency signals and receiving echo signals from the article tags, which are sensed by the RFID antenna; the RFID antenna also carries out information transmission with the RFID label through electromagnetic wave signals in the electromagnetic field space.
The RFID labels are fixedly arranged on corresponding articles (such as tools and materials) in a sticking or binding mode and are used for electronizing the identity of each independent article to form a corresponding article label so as to realize the information management of the articles.
The item tag information includes a number of the item tag and a received signal strength RSSI value.
The control host is provided with a parameter learning module and a misreading removal module; and the parameter learning module and the misreading removal module perform data interaction through database reading and writing.
The misreading removal method of the ultrahigh frequency RFID reading system is based on the Fris electromagnetic wave transmission equation as a theoretical basis, namely the signal intensity of a receiving end is inversely proportional to the square of the distance of a transmitting end in the transmission process of electromagnetic waves, in detail, when a label of the same article is at the same fixed position, the RSSI value of the received signal intensity during reading of an RFID reader is relatively fixed, and when the label is closer to the RFID reader, the RSSI value of the received signal intensity is gradually increased. Therefore, the RSSI value of the tag to be read is compared with the RSSI value configured in parameter learning, and whether the tag belongs to correct reading or misreading can be judged.
The method comprises the following two processes:
i, parameter learning process:
the overall process of the process is shown in fig. 2, and the positions of the ultrahigh frequency RFID reader and the RFID antenna are firstly installed and fixed; then, starting a parameter learning module in the control host to enable a self-learning program in the module to learn the serial numbers and RSSI value information of the labels of the articles, wherein the specific learning method comprises the following steps:
placing the article tags at a certain distance (such as 1 meter) right in front of the antenna, or placing each article tag at a fixed position to which the article tag belongs, and then learning the serial number and RSSI value information of each article tag; and after learning is finished, storing the corresponding label number and the RSSI value into a database.
The RSSI parameter values of each article label are different and used as reference values for comparison in each warehouse entry and exit in the future. The parameter learning process is used for multiple times by one-time operation, and generally, the parameter learning process needs to be restarted only under the condition of moving the ultrahigh frequency RFID reader and the RFID antenna.
II, misreading and removing process:
the whole process of the process is shown in fig. 3, firstly, an article label list to be delivered to and stored in a warehouse is formulated on a control host computer and is used as a reference basis for label numbers of articles delivered to and stored in the warehouse; then the control host sends out a control command to start tag reading, so that the serial number and the RSSI value of the article tag read by the ultrahigh frequency RFID reader are obtained;
starting a misreading removal module in the control host, and comparing the recognized label number and the RSSI value with the learned related parameters in the database; finally, according to the RSSI value, normally read tags are screened out, misread tags are removed, and the problem of misreading is solved; this process is invoked each time an entry is made and exited.
According to the invention, the information of the article labels entering and exiting the warehouse is compared with the information in the database established by parameter learning in the early stage, so that the accuracy of the ultrahigh frequency RFID reader for identifying and reading the article labels can be obviously improved, the problem of label misreading is fundamentally solved, and the method has important value in practical industrial application.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (4)
1. An ultrahigh frequency RFID reading system and a misreading removal method thereof are characterized in that:
the ultrahigh frequency RFID reading system comprises a control host, an ultrahigh frequency RFID reader and an RFID antenna; the control host is connected with the ultrahigh frequency RFID reader through an Ethernet interface or a serial port and is used for exchanging commands with the ultrahigh frequency RFID reader and receiving the information of the article label read by the ultrahigh frequency RFID reader; the ultrahigh frequency RFID reader is also connected with the RFID antenna through a radio frequency feeder line and is used for radiating out radio frequency signals and receiving echo signals from the article tags, which are sensed by the RFID antenna; the RFID antenna also carries out information transmission with the RFID label through electromagnetic wave signals;
the misreading removal method of the ultrahigh frequency RFID recognition system comprises the following two processes:
i, parameter learning process:
installing and fixing the positions of the ultrahigh frequency RFID reader and the RFID antenna; starting a parameter learning module in the control host to enable a self-learning program in the module to learn the serial numbers and RSSI value information of the labels of the articles, wherein the specific learning method comprises the following steps:
placing each article label right in front of the RFID antenna or at a fixed position where the article label belongs to, and learning the serial number and RSSI value information of each article label; after learning is finished, storing the corresponding label number and the RSSI value into a database; the process is one-time learning and multiple use;
II, misreading and removing process:
firstly, an article label list to be put in and out of a warehouse is formulated on a control host, and then the control host sends a control instruction to start label reading, so that the article label number and the RSSI value which are read by an ultrahigh frequency RFID reader are obtained;
starting a misreading removal module in the control host, comparing the number and RSSI value of the read label with the learned related parameters in the database, and removing the misreading label; this process is invoked each time an entry is made and exited.
2. The UHF RFID reading system and the misreading removal method thereof according to claim 1, wherein: the RFID tags are fixedly arranged on corresponding articles in a sticking or binding mode and are used for electronizing the identity of each independent article to form corresponding article tags.
3. The UHF RFID reading system and the misreading removal method thereof according to claim 2, wherein: the item tag information includes a number and an RSSI value of the item tag.
4. The UHF RFID reading system and the misreading removal method thereof according to claim 1, wherein: the control host is provided with a parameter learning module and a misreading removal module; and the parameter learning module and the misreading removal module perform data interaction through database reading and writing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711187289.2A CN107944317B (en) | 2017-11-24 | 2017-11-24 | Ultrahigh frequency RFID (radio frequency identification) reading system and misreading removal method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711187289.2A CN107944317B (en) | 2017-11-24 | 2017-11-24 | Ultrahigh frequency RFID (radio frequency identification) reading system and misreading removal method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107944317A CN107944317A (en) | 2018-04-20 |
| CN107944317B true CN107944317B (en) | 2020-11-24 |
Family
ID=61931068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711187289.2A Active CN107944317B (en) | 2017-11-24 | 2017-11-24 | Ultrahigh frequency RFID (radio frequency identification) reading system and misreading removal method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107944317B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110084340B (en) * | 2019-05-05 | 2022-05-31 | 福建永洪物联网科技有限公司 | Method for selecting fixed position of RFID label on outer side of packing box |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100603763B1 (en) * | 2004-06-10 | 2006-07-24 | 삼성전자주식회사 | Apparatus for sensing temperature using RF signal with different frequency and method thereof |
| CN101789072B (en) * | 2009-01-23 | 2012-04-25 | 香港城市大学 | Ultrahigh frequency radio frequency identification device and system thereof |
| CN101957924B (en) * | 2009-07-20 | 2016-01-20 | 西门子公司 | A kind of method for testing motion in radio-frequency recognition system and read write line |
| CN101888277B (en) * | 2010-06-17 | 2013-10-23 | 深圳市江波龙电子有限公司 | Intelligent expansion card and near field communication control system and method based on RSSI |
| US8325019B2 (en) * | 2010-09-13 | 2012-12-04 | Ricoh Company, Ltd. | Motion tracking techniques for RFID tags |
-
2017
- 2017-11-24 CN CN201711187289.2A patent/CN107944317B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107944317A (en) | 2018-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101957924B (en) | A kind of method for testing motion in radio-frequency recognition system and read write line | |
| US7093756B2 (en) | Distributed production control | |
| KR100963323B1 (en) | Rfid system and rfid tag | |
| CN104091184B (en) | Electronic label detecting method and system | |
| US20140327522A1 (en) | Method for operating a field device of process automation technology | |
| CN103914132A (en) | Method and system for recognizing gestures based on fingers | |
| CN107944317B (en) | Ultrahigh frequency RFID (radio frequency identification) reading system and misreading removal method thereof | |
| CN109299755B (en) | Product on-line assembly system based on RFID technology | |
| US20110156876A1 (en) | Method and Device for Recognizing Functional States in RFID or Remote Sensor Systems | |
| CN103679235A (en) | Monitoring device and method for fixed point positioning management of articles | |
| CN104680101A (en) | Method for controlling label identification distance | |
| CN110135211B (en) | Method and device capable of rapidly and accurately checking number of RFID radio frequency tags | |
| CN209767550U (en) | Automatic calibration and automatic testing device for radio frequency power of RFID (radio frequency identification) module | |
| CN112528688B (en) | Radio frequency tag control method, response method and device, storage medium, reader and radio frequency tag | |
| CN201464840U (en) | Controller for equipment cabinet | |
| CN204595905U (en) | RFID tag, label recognizer, label reader | |
| CN108021957B (en) | Anti-collision method and system, readable storage medium and card reading device | |
| CN102314628A (en) | Production line supervision system | |
| CN201716742U (en) | Clothing tracking system based on RFID technology | |
| CN111929636B (en) | Intelligent identification and marking positioning method for metal container | |
| CN101739536A (en) | Method for reading and writing tags in radio-frequency recognition system and reader-writer | |
| CN112163437B (en) | Method for determining optimal starting sequence of multiple antennae of RFID | |
| CN103679080A (en) | Tag identification distance control method, reader and system | |
| CN103489016A (en) | RFID anti-collision read-write device and control method thereof | |
| CN113447729A (en) | Test method of wireless radio frequency system and computer device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |