CN111144517B - Article positioning method and device based on ultrahigh frequency RFID - Google Patents
Article positioning method and device based on ultrahigh frequency RFID Download PDFInfo
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- CN111144517B CN111144517B CN201910986098.5A CN201910986098A CN111144517B CN 111144517 B CN111144517 B CN 111144517B CN 201910986098 A CN201910986098 A CN 201910986098A CN 111144517 B CN111144517 B CN 111144517B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
- G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
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Abstract
The invention discloses an article positioning method based on ultrahigh frequency RFID, which is applied to a conveyor belt and comprises the following steps: s1, an ultrahigh frequency RFID information acquisition device arranged on one side of the conveyor belt acquires RFID information carried by an article and transmits the RFID information to a server; s2, a server stores a distance L1 between the information acquired by the article for the first time and the ultrahigh frequency RFID information acquisition equipment and a distance L2 between the information acquired by the ultrahigh frequency RFID information acquisition equipment at the last time, and the length of the article display block is L=L1+L2; s3, storing the first acquired information time of the object by the server as T1 and the last acquired information time of the object as T2, wherein the initial time of the object is T0= (T1+T2)/2; s4, analyzing the positions of the real-time distance RFID information acquisition equipment of the object by the server, wherein the positions are as follows: dl= (Td-T0) V-TV 0V. The invention is convenient for quick positioning and searching of articles on the conveyor belt, saves time and labor, and is especially suitable for use environments of baggage conveyor belts and logistics sorting conveyor belts and the like in airports.
Description
Technical Field
The invention relates to an article position determining method, in particular to an article positioning method based on ultrahigh frequency RFID, and belongs to the technical field of wireless radio frequency identification.
Background
With the wide application of the ultra-high frequency RFID tags, logistics express, airport baggage and warehouse goods are all stuck with the ultra-high frequency RFID tags, and the tags can be rapidly identified on a conveyor belt.
Currently, bar code identification is commonly used for information reading of articles on a conveyor belt. However, the barcode recognition device has the problems of a plurality of recognition rates, such as incapability of recognizing the barcode when the barcode is blocked, and more deployment restrictions, higher cost, larger volume and inconvenient deployment.
In particular, the equipment cannot be deployed on the airport passenger baggage picking conveyor belt, so that the information of the articles on the conveyor belt cannot be identified, and the confirmation and reminding of the positions of the articles cannot be carried out. The passenger cannot know the position of his own baggage on the conveyor belt, and can only judge the position of his own baggage by carefully observing each baggage on the conveyor belt with his own eyes.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides an article positioning method based on an ultrahigh frequency FRID, which is accurate in position information.
The invention also provides an article positioning device based on the ultrahigh frequency FRID, which solves the problems.
In order to solve the technical problems, the invention provides an article positioning method based on ultrahigh frequency RFID, which is applied to a conveyor belt and comprises the following steps:
s1, an ultrahigh frequency RFID information acquisition device arranged on one side of the conveyor belt acquires RFID information carried by an article and transmits the RFID information to a server;
s2, the server analyzes the received RFID information, and stores a distance L1 between the article with the same RFID tag and the ultrahigh frequency RFID information acquisition equipment when the article is acquired for the first time and a distance L2 between the article with the same RFID tag and the ultrahigh frequency RFID information acquisition equipment when the article is acquired for the last time, wherein the length of the article display block is L=L1+L2;
s3, the server analyzes the received RFID information, the time of storing the first acquired information of the article of the same RFID tag is T1, the time of storing the last acquired information of the article of the same RFID tag is T2, and the starting time of the article is T0= (T1+T2)/2;
s4, analyzing the positions of the real-time distance RFID information acquisition equipment of the object by the server, wherein the positions are as follows: dl= (Td-T0) ×v-TV0×v, where DL is the position of the article from the RFID information acquisition device in real time; td is real time; t0 is the start time; v is the speed of the conveyor belt; TV0 is the time when the conveyor speed is 0.
The technical scheme of the invention is further defined in that in step S4, the speed V of the conveyor belt is collected in real time by a speed sensor and transmitted to the server.
Further, when the conveyor belt is an endless conveyor belt, the time of one revolution of the endless conveyor belt is TL, and after the interval TL/2, T1 and T2 corresponding to the RFID tag are cleared 0, and steps S2 to S4 are re-executed.
Further, the method further comprises a query step, wherein after receiving the query instruction, the server outputs the real-time position of the article display block in real time according to the acquired RFID tag information and displays the real-time position on the display device.
The other technical scheme provided by the invention is as follows: an article positioning device based on ultra-high frequency RFID comprises
The ultrahigh frequency RFID information acquisition equipment is arranged on one side of the conveyor belt, acquires RFID information carried by the article and transmits the RFID information to the server;
the server is used for analyzing the received RFID information and storing the distance L1 between the article with the same RFID tag and the ultrahigh frequency RFID information acquisition equipment when the article is acquired for the first time and the distance L2 between the article with the same RFID tag and the ultrahigh frequency RFID information acquisition equipment when the article is acquired for the last time, and the length of the article display block is L=L1+L2;
the time for storing the first acquired information and the last acquired information of the article of the same RFID tag is T1 and T2, respectively, and the initial time of the article is T0= (T1+T2)/2;
the position of the RFID information acquisition device for analyzing and obtaining the real-time distance of the article is as follows: dl= (Td-T0) ×v-TV0×v, where DL is the position of the article from the RFID information acquisition device in real time; td is the real time; t0 is the start time; v is the speed of the conveyor belt; TV0 is the time when the conveyor speed is 0.
The technical scheme is further defined as further comprising a speed sensor, wherein the speed sensor is used for acquiring the speed of the conveyor belt in real time and transmitting the speed to the server.
Further, the RFID tag information acquisition device is further used for acquiring the RFID tag information and transmitting the RFID tag information to the server.
Further, the display device is used for receiving real-time position of the real-time output article display block of the server and displaying the real-time position.
The beneficial effects are that: according to the ultrahigh frequency RFID-based article positioning method and the ultrahigh frequency RFID-based article positioning device, the ultrahigh frequency RFID reading equipment is deployed on the conveyor belt, and the information acquired by the ultrahigh frequency RFID is utilized to form and display the RFID article position information, so that the articles on the conveyor belt can be positioned and searched conveniently and quickly, time and labor are saved, and the ultrahigh frequency RFID-based article positioning method and the ultrahigh frequency RFID-based article positioning device are particularly suitable for use environments such as baggage conveyor belts and logistics sorting conveyor belts of airports.
Drawings
Fig. 1 is a schematic structural diagram of an article positioning device based on an ultra-high frequency RFID according to embodiment 1.
Fig. 2 is a schematic operation diagram of the article positioning device in the embodiment 1 when the conveyor belt rotates clockwise.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Example 1
The invention provides an article positioning device based on ultrahigh frequency RFID, which is shown in fig. 1 in a schematic structure, and comprises a server 101, ultrahigh frequency RFID information acquisition equipment 102, a speed sensor 103, a query device and a display device 104. The working principle and the function of each component are as follows:
the ultrahigh frequency RFID information acquisition device 102 is arranged on one side of the conveyor belt 107, acquires RFID information carried by the article, and transmits the RFID information to the server 101. The ultra-high frequency RFID information collection device 102 may take the form of a conventional dual-arm supported gantry, a single-arm supported gantry, or a aesthetic bracket. The whole equipment comprises ultrahigh frequency RFID acquisition equipment and an antenna which is matched with the ultrahigh frequency RFID acquisition equipment, a feeder line between the RFID acquisition equipment and the antenna, power supply equipment required by the RFID acquisition equipment and the like. The ultra-high frequency RFID acquisition device 102 is primarily intended to acquire RFID information of the articles 105, 106 with ultra-high frequency RFID tags on the conveyor belt 107.
The server 101 is configured to analyze the received RFID information, store a distance L1 between the article with the same RFID tag and the ultrahigh frequency RFID information acquisition device (102) when the article is acquired for the first time and a distance L2 between the article with the same RFID tag and the ultrahigh frequency RFID information acquisition device (102) when the article is acquired for the last time, and then obtain a length of the article display block as l=l1+l2.
The time for storing the first acquired information and the last acquired information of an item of the same RFID tag is T1 and T2, respectively, the start time of the item is t0= (t1+t2)/2.
The position of the RFID information acquisition device (102) for analyzing and obtaining the real-time distance of the object is as follows: dl= (Td-T0) ×v-TV0×v, where DL is the position of the article from the RFID information acquisition device (102) in real time; td is real time; t0 is the start time; v is the speed of the conveyor belt (107); TV0 is the time when the speed of the conveyor belt (107) is 0.
The server 101 is used to calculate and store the position of the RFID tag on the conveyor belt by mainly receiving information of the ultra-high frequency RFID acquisition device 102 and the conveyor belt speed sensor 103 in combination with time information. If the traveler arrives at the baggage retrieval carousel, the device may also query the background Li Jitong for flight information for the carousel, and for the traveler information corresponding to the acquired RFID confidence, for pushing to the associated display device.
A speed sensor 103 for acquiring the speed of the conveyor belt 107 in real time and transmitting the speed to the server 101. The apparatus is used to provide information on the speed of movement of the conveyor belt, wherein the conveyor belt is considered to stop moving at a speed of 0. The device may be a separately mounted encoder or may be speed information provided by the conveyor itself.
And the query device is used for collecting the RFID tag information and transmitting the RFID tag information to the server 101.
And a display device 104 for receiving the real-time position of the real-time output article display block from the server 101 and displaying the real-time position.
The display precision of the RFID article baggage is not required to reach the centimeter level in view of the movement of the baggage turntable when the passenger arrives at the baggage extracting ring section, so that the display is performed by adopting the position blocks.
The article positioning method based on the ultrahigh frequency RFID provided in the embodiment is applied to the conveyor belt 107, and is performed according to the following steps:
s1, an ultrahigh frequency RFID information acquisition device 102 arranged on one side of the conveyor belt 107 acquires RFID information carried by the article and transmits the RFID information to a server 101. The ultra-high frequency RFID acquisition equipment has the advantages that the reading range of the RFID tag is related to the performance of the reading equipment except the tag and the antenna, and the transmitting power of the ultra-high frequency acquisition equipment can be adjusted to P0 so as to ensure that the reading rate of the RFID tag on the RFID conveyor belt meets the requirement.
S2, the server 101 analyzes the received RFID information, and stores a distance L1 between the article with the same RFID tag and the ultrahigh frequency RFID information acquisition equipment 102 when the article is acquired for the first time and a distance L2 between the article with the same RFID tag and the ultrahigh frequency RFID information acquisition equipment 102 when the article is acquired for the last time, and then the length of the article display block is L=L1+L2. The length of this display block, which is actually the read range of the RFID information gathering device, is then used as the length of the display block. The display block can also display with other lengths according to actual requirements.
Assuming that the conveyor belt rotates clockwise as shown in fig. 2, RFID item baggage is tested, passing through the ultra-high frequency RFID information collection device 102 by rotation of the conveyor belt. During one period of conveyor belt rotation, the test RFID item baggage 106 is first read by UHF RFID information gathering device 102 a distance L1 from RFID information gathering device center location 202. The position where the test RFID article luggage 203 was last read by the ultra-high frequency RFID information collection device 102 is a distance L2 from the RFID information collection device center position 202.
S3, the server 101 analyzes the received RFID information, the time for storing the first acquired information of the article of the same RFID tag is T1, and the time for storing the last acquired information of the article is T2, and then the starting time of the article is T0= (T1+T2)/2.
S4, analyzing the position of the article, which is obtained by the server 101 and is away from the RFID information acquisition device 102 in real time, is as follows: dl= (Td-T0) ×v-TV0×v, where DL is the position of the article from the RFID information acquisition device 102 in real time; td is real time; t0 is the start time; v is the speed of the conveyor belt 107; TV0 is the time when the speed of the conveyor 107 is 0.
S5, after receiving the inquiry command, the server 101 outputs the real-time position of the article display block in real time according to the acquired RFID tag information, and displays the real-time position on the display device 104.
S6, when the conveyor belt 107 is an endless conveyor belt, the time of one revolution of the endless conveyor belt is TL, and after the interval TL/2, T1 and T2 corresponding to the RFID tag are cleared 0, and steps S2-S4 are re-executed. For the annular turntable, the RFID article baggage can rotate on the turntable for a plurality of times, and the RFID article baggage passes through the RFID information acquisition equipment for a plurality of times, and products are T1 and T2 for a plurality of times, so that in order to ensure accurate data calculation, the T1 and T2 time recorded by each RFID tag can be cleared by 0 after TL/2 time. According to the calculation period, the starting time T0 of the RFID article baggage and the real-time distance RFID information acquisition who is stored by the central position DL are updated according to the rotation period of the conveyor belt.
The present embodiment provides a method and apparatus for issuing and displaying information of the location of an RFID item in combination with information such as the location of the reading, the transfer speed of the conveyor belt, and the information transfer delay. And more particularly to use environments such as airport luggage conveyor belts, logistics sorting conveyor belts, etc., capable of reminding to display and inform the location of the conveyor belt where the RFID items are located.
In order to better and more accurately reflect the position of the luggage of the RFID article, more accurate position information can be given by combining a corresponding advanced algorithm of RFID positioning on the transmission line, wherein the position information is positioned at a certain position of the display block. When the ultrahigh frequency RFID article position display device is in an on-line state, the update server can inquire the background RFID tag position according to the preset update time TT to acquire position information. If the equipment is unstable in online state, the display can be calculated according to the speed and the position of the conveyor belt acquired last time.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be appreciated by those skilled in the art that the above embodiments are not intended to limit the invention in any way, and that all technical solutions obtained by means of equivalent substitutions or equivalent transformations fall within the scope of the invention.
Claims (8)
1. An article positioning method based on ultra-high frequency RFID, applied to a conveyor belt (107), is characterized by comprising the following steps:
s1, an ultrahigh frequency RFID information acquisition device (102) arranged at one side of the conveyor belt (107) acquires RFID information carried by an article and transmits the RFID information to a server (101);
s2, the server (101) analyzes the received RFID information, and stores a distance L1 between the article with the same RFID tag and the ultrahigh frequency RFID information acquisition equipment (102) when the article is acquired for the first time and a distance L2 between the article with the same RFID tag and the ultrahigh frequency RFID information acquisition equipment (102) when the article is acquired for the last time, wherein the length of the article display block is L=L1+L2;
s3, the server (101) analyzes the received RFID information, the time of storing the first acquired information of the article of the same RFID tag is T1, and the time of storing the last acquired information is T2, and then the starting time of the article is T0= (T1+T2)/2;
s4, analyzing the position of the object, which is obtained by the server (101), from the RFID information acquisition equipment (102) in real time, wherein the position is as follows: dl= (Td-T0) ×v-TV0×v, where DL is the position of the article from the RFID information acquisition device (102) in real time; td is real time; t0 is the start time; v is the speed of the conveyor belt (107); TV0 is the time when the speed of the conveyor belt (107) is 0.
2. The method of claim 1, wherein the speed V of the conveyor belt (107) in step S4 is acquired by a speed sensor (103) in real time and transmitted to the server (101).
3. The method of claim 1, wherein when the conveyor belt (107) is an endless conveyor belt, the time taken for one revolution of the endless conveyor belt is TL, and after the interval TL/2, T1 and T2 corresponding to the RFID tag are cleared 0, and steps S2 to S4 are re-performed.
4. The method for positioning an article based on ultra-high frequency RFID according to claim 1, further comprising a query step, wherein the server (101) outputs the real-time position of the article display block in real time according to the collected RFID tag information and displays the real-time position on the display device (104) after receiving the query command.
5. An article positioning device based on ultra-high frequency RFID, which is characterized by comprising
The ultrahigh frequency RFID information acquisition equipment (102) is arranged at one side of the conveyor belt (107) and is used for acquiring RFID information carried by the articles and transmitting the RFID information to the server (101);
the server (101) is used for analyzing the received RFID information and storing a distance L1 between the article with the same RFID tag and the ultrahigh frequency RFID information acquisition equipment (102) when the article is acquired for the first time and a distance L2 between the article with the same RFID tag and the ultrahigh frequency RFID information acquisition equipment (102) when the article is acquired for the last time, and the length of the article display block is L=L1+L2;
the time for storing the first acquired information and the last acquired information of the article of the same RFID tag is T1 and T2, respectively, and the initial time of the article is T0= (T1+T2)/2;
the position of the RFID information acquisition device (102) for analyzing and obtaining the real-time distance of the object is as follows: dl= (Td-T0) ×v-TV0×v, where DL is the position of the article from the RFID information acquisition device (102) in real time; td is real time; t0 is the start time; v is the speed of the conveyor belt (107); TV0 is the time when the speed of the conveyor belt (107) is 0.
6. The ultra-high frequency RFID-based item location apparatus of claim 5, further comprising a speed sensor (103) for acquiring the speed of said conveyor belt (107) in real time and transmitting to said server (101).
7. The ultra-high frequency RFID-based item location apparatus of claim 5, further comprising a query device for collecting RFID tag information and transmitting to a server (101).
8. The ultrahigh frequency RFID-based item location apparatus of claim 5, further comprising a display device (104) for receiving real-time positions of the item display tiles output and displayed by the server (101) in real time.
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| CN201910986098.5A CN111144517B (en) | 2019-10-17 | 2019-10-17 | Article positioning method and device based on ultrahigh frequency RFID |
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| CN201910986098.5A CN111144517B (en) | 2019-10-17 | 2019-10-17 | Article positioning method and device based on ultrahigh frequency RFID |
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| CN112085134B (en) * | 2020-09-09 | 2021-03-23 | 华清科盛(北京)信息技术有限公司 | Airport luggage identification system and method based on radio frequency identification |
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| CN110187344A (en) * | 2019-05-31 | 2019-08-30 | 天津大学 | Transmission based on Inverse Synthetic Aperture Radar is marked with article recognition positioning method |
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| US20120056723A1 (en) * | 2010-09-06 | 2012-03-08 | Liping Zhu | Method and system for baggage claim at the airport |
| WO2016112911A1 (en) * | 2015-01-14 | 2016-07-21 | Lyngsoe Systems A/S | A system for and a method of identification of a tag on a moving item |
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| CN108614980A (en) * | 2018-04-16 | 2018-10-02 | 西南科技大学 | A kind of the dynamic object positioning system and method for combining RFID and laser intelligence |
| CN110187344A (en) * | 2019-05-31 | 2019-08-30 | 天津大学 | Transmission based on Inverse Synthetic Aperture Radar is marked with article recognition positioning method |
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