CN111144517A - 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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- CN111144517A CN111144517A CN201910986098.5A CN201910986098A CN111144517A CN 111144517 A CN111144517 A CN 111144517A CN 201910986098 A CN201910986098 A CN 201910986098A CN 111144517 A CN111144517 A CN 111144517A
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- 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 provisions 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 provisions 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, collecting RFID information carried by the articles by the ultrahigh frequency RFID information collecting equipment arranged on one side of the conveyor belt and transmitting the RFID information to a server; s2, storing a distance L1 between the server and the ultrahigh frequency RFID information acquisition equipment when the information of the article is acquired for the first time and a distance L2 between the server and the ultrahigh frequency RFID information acquisition equipment when the information of the article is acquired for the last time, wherein the length of the article display block is L = L1+ L2; s3, if the time for the server to store the information collected for the first time of the article is T1 and the time for the information collected for the last time of the article is T2, the starting time of the article is T0= (T1+ T2)/2; s4, analyzing by the server to obtain the position of the real-time distance between the article and the RFID information acquisition equipment as follows: DL = (Td-T0) × V-TV0 × V. The invention is convenient for quickly positioning and searching the articles on the conveyor belt, saves time and labor, and is particularly suitable for being applied to the use environments of baggage conveyor belts, 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 radio frequency identification.
Background
With the wide application of the ultrahigh frequency RFID tags, logistics express delivery, airport luggage and warehouse goods are all pasted with the ultrahigh frequency RFID tags, and the tags can be rapidly identified on a conveyor belt.
At present, the information of the articles on the conveyor belt is read, and bar code identification is generally adopted. However, the barcode recognition device has the problems of a large recognition rate, for example, the barcode cannot be recognized under the conditions of being blocked, and the barcode recognition device has more deployment restrictions, higher cost, larger volume and inconvenient deployment.
Particularly, such a device cannot be disposed on an airport passenger baggage picking conveyor belt, so that information of an article on the conveyor belt cannot be identified, and further, confirmation and reminding of the position of the article cannot be performed. The passenger cannot know the position of the luggage on the conveyor belt, and can only judge the position of the luggage by carefully observing each luggage on the conveyor belt through eyes.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides an article positioning method based on an ultrahigh frequency FRID with accurate position information.
The invention also provides an article positioning device based on the ultra-high frequency FRID, which solves the problem.
In order to solve the technical problem, 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, collecting RFID information carried by the articles by the ultrahigh frequency RFID information collecting equipment arranged on one side of the conveyor belt and transmitting 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 label and the ultrahigh frequency RFID information acquisition equipment when information is acquired for the first time and a distance L2 between the article with the same RFID label and the ultrahigh frequency RFID information acquisition equipment when information is acquired for the last time, so that the length of the article display block is L1+ L2;
s3, the server analyzes the received RFID information, the time of first information acquisition of the article storing the same RFID tag is T1, and the time of last information acquisition of the article is T2, and the starting time of the article is T0 ═ T1+ T2)/2;
s4, analyzing by the server to obtain the position of the real-time distance between the article and the RFID information acquisition equipment as follows: DL-TV 0V, (Td-T0) where DL is the location of the item from the RFID information collection device in real time; td is real time; t0 is the starting time; v is the speed of the conveyor belt; TV0 is the time when the conveyor speed is 0.
The technical solution of the present invention is further defined in that in step S4, the speed V of the conveyor belt is acquired by a speed sensor in real time and transmitted to the server.
Further, when the conveyor belt is an endless conveyor belt, the time for one rotation of the endless conveyor belt is TL, and after the interval TL/2, T1 and T2 corresponding to the RFID tag are cleared to 0, and steps S2 to S4 are performed again.
And further, the method also comprises an inquiry step, wherein after receiving the inquiry instruction, the server outputs the real-time position of the article display block in real time according to the acquired RFID label information, and the real-time position is displayed on the display device.
The other technical scheme provided by the invention is as follows: an article positioning device based on ultrahigh frequency RFID comprises
The ultrahigh frequency RFID information acquisition equipment is arranged on one side of the conveyor belt, acquires RFID information carried by articles and transmits the RFID information to the server;
the server is used for analyzing the received RFID information, storing a distance L1 between the first time information is acquired by the article with the same RFID label and the ultrahigh frequency RFID information acquisition equipment and a distance L2 between the last time information is acquired and the ultrahigh frequency RFID information acquisition equipment, and then the length of the article display block is L1+ L2;
the time when the information of the item stored in the same RFID tag is collected for the first time is T1, and the time when the information of the item is collected for the last time is T2, then the starting time of the item is T0 ═ T1+ T2)/2;
the position for analyzing and obtaining the real-time distance between the article and the RFID information acquisition equipment is as follows: DL-TV 0V, (Td-T0) where DL is the location of the item from the RFID information collection device in real time; td is real time; t0 is the starting 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 by further comprising a speed sensor for acquiring the speed of the conveyor belt in real time and transmitting the speed to the server.
Further, the RFID tag information inquiry device is used for acquiring the RFID tag information and transmitting the RFID tag information to the server.
And further, the display device is used for receiving the real-time position of the real-time output article display block of the server and displaying the real-time position.
Has the advantages that: according to the article positioning method and device based on the ultrahigh frequency RFID, the ultrahigh frequency RFID reading device is arranged 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 conveniently and quickly positioned and searched, time and labor are saved, and the article positioning method and device are particularly suitable for use environments such as baggage conveyor belts and logistics sorting conveyor belts in airports.
Drawings
Fig. 1 is a schematic structural diagram of an article locating device based on uhf RFID provided in embodiment 1.
Fig. 2 is a schematic view showing the operation of the article positioning device in the case where the conveyor belt rotates clockwise in embodiment 1.
Detailed Description
The present 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, the structural schematic diagram of which is shown in FIG. 1, and the device comprises a server 101, ultrahigh frequency RFID information acquisition equipment 102, a speed sensor 103, an inquiry device and a display device 104. The working principle and the function of each part are as follows:
the ultrahigh frequency RFID information collecting device 102 is disposed on one side of the conveyor belt 107, and collects RFID information carried by an article and transmits the RFID information to the server 101. The ultrahigh frequency RFID information acquisition device 102 may be in the form of a conventional two-arm supported gantry, a single-arm supported gantry, or a cosmetic support. The whole equipment comprises ultrahigh frequency RFID acquisition equipment, an antenna 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 uhf RFID collection device 102 is primarily intended to collect RFID information from items 105, 106 having uhf RFID tags on a conveyor belt 107.
And the server 101 is configured to analyze the received RFID information, store a distance L1 between the first time information is collected and the ultrahigh frequency RFID information collection device (102) and a distance L2 between the last time information is collected and the ultrahigh frequency RFID information collection device (102) for the article with the same RFID tag, and determine that the length of the article display block is L1+ L2.
The time when the information of the item storing the same RFID tag is collected for the first time is T1 and the time when the information is collected for the last time is T2, the starting time of the item is T0 ═ T1+ T2)/2.
The position for analyzing and obtaining the real-time distance between the article and the RFID information acquisition device (102) is as follows: (Td-T0) V-TV 0V, where DL is the location of the item from the RFID information collection device (102) in real time; td is real time; t0 is the starting 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 mainly used for calculating the position of the RFID label on the conveyor belt by receiving the information of the ultrahigh frequency RFID acquisition device 102 and the conveyor belt speed sensor 103 and combining the time information, and storing the position. If the passenger arrives at the baggage extraction turntable, the device can also inquire the flight information of the turntable and the acquired passenger information corresponding to the RFID confidence from a background baggage system so as to be pushed to a related display device.
And the speed sensor 103 is used for acquiring the speed of the conveyor belt 107 in real time and transmitting the speed to the server 101. The device is used for providing information of the moving speed of the conveyor belt, wherein when the speed is 0, the conveyor belt is considered to stop moving. This device can be a separately mounted encoder or it can be speed information provided by the conveyor belt itself.
And the query device is used for acquiring the RFID label information and transmitting the RFID label information to the server 101.
And the display device 104 is used for receiving the real-time position of the article display block output by the server 101 in real time and displaying the real-time position.
According to the position information of the RFID objects on the conveyor belt, particularly when a passenger arrives at a luggage extraction link, the display precision of the RFID objects and luggage does not reach the centimeter level by considering the response speed of people and the movement of a luggage turntable, so that the position block display is adopted during the display.
The article positioning method based on the ultrahigh frequency RFID provided by the embodiment is applied to the conveyor belt 107, and is performed according to the following steps:
and S1, the ultrahigh frequency RFID information collecting device 102 arranged at one side of the conveyor belt 107 collects RFID information carried by the articles and transmits the RFID information to the server 101. The reading range of the ultrahigh frequency RFID acquisition equipment to the RFID label is related to the performances of the reading equipment except the label, the antenna and the like, and the ultrahigh frequency RFID acquisition equipment can adjust the transmitting power of the ultrahigh frequency acquisition equipment to P0 so as to ensure that the reading rate of the RFID label on the RFID conveyor belt meets the requirement.
S2, the server 101 analyzes the received RFID information, and stores a distance L1 between the first time information is collected and the uhf RFID information collection device 102 for the article having the same RFID tag, and a distance L2 between the last time information is collected and the uhf RFID information collection device 102, so that the length of the article display block is L1+ L2. The length of the display block is actually the reading range of the RFID information acquisition device, and this is used as the length of the display block. The display block can also be displayed with other lengths according to actual requirements.
Assuming the carousel rotates clockwise as shown in fig. 2, the RFID item under test, baggage, passes through the uhf RFID information collection device 102 by the rotation of the carousel. During one cycle of the conveyor belt rotation, the first time the item of baggage 106 to be tested is read by the uhf RFID information collection device 102 is located a distance L1 from the RFID information collection device center location 202. The distance from the position where the tested RFID article baggage 203 was last read by the uhf RFID information collection device 102 to the RFID information collection device center position 202 is L2.
S3, the server 101 analyzes the received RFID information, and if the time of first collecting information of the article storing the same RFID tag is T1 and the time of last collecting information of the article is T2, the starting time of the article is T0 ═ T1+ T2)/2.
S4, the server 101 analyzes that the position of the real-time distance between the article and the RFID information acquisition device 102 is as follows: DL-TV 0V, (Td-T0) where DL is the location of the item from the RFID information collection device 102 in real time; td is real time; t0 is the starting time; v is the speed of the conveyor belt 107; TV0 is the time when the speed of conveyor belt 107 is 0.
And S5, after receiving the query instruction, the server 101 outputs the real-time position of the item display block in real time according to the acquired RFID label 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, the T1 and T2 corresponding to the RFID tags are cleared by 0, and the steps S2-S4 are executed again. For the annular turntable, since the RFID item luggage can rotate on the turntable for multiple times, pass through the RFID information acquisition device for multiple times, and the product is T1 and T2 for multiple times, in order to guarantee the accuracy of data calculation, the time T1 and T2 recorded by each RFID tag can be 0 after TL/2 time. According to the calculation period, the starting time T0 of the RFID article luggage 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 transmitting and displaying RFID item location information in conjunction with information such as read location and conveyor belt travel speed and information transmission delays. In particular to a use environment of a baggage conveyor belt, a logistics sorting conveyor belt and the like in an airport, which can remind and display the position of the conveyor belt where an RFID article is located.
To better and more accurately reflect the location of the RFID item's luggage, a corresponding advanced algorithm for RFID location on the transmission line may be incorporated to give more accurate location information, which is located somewhere on the display block. When the ultrahigh frequency RFID article position display equipment is in an online state, the position information can be acquired by inquiring the position of the background RFID label and updating the server according to the preset updating time TT. If the online state of the equipment is unstable, the self-calculation display can be carried out according to the speed and the position of the conveyor belt acquired last time.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent substitution or equivalent transformation fall within the protection scope of the present invention.
Claims (8)
1. An article positioning method based on ultrahigh frequency RFID is applied to a conveyor belt (107), and is characterized by comprising the following steps:
s1, the ultrahigh frequency RFID information acquisition equipment (102) arranged on one side of the conveyor belt (107) acquires RFID information carried by articles and transmits the RFID information to the server (101);
s2, the server (101) analyzes the received RFID information, and stores a distance L1 between the article with the same RFID label and the ultrahigh frequency RFID information acquisition device (102) when information is acquired for the first time and a distance L2 between the article with the same RFID label and the ultrahigh frequency RFID information acquisition device (102) when information is acquired for the last time, so that the length of the article display block is L1+ L2;
s3, the server (101) analyzes the received RFID information, the time of first information acquisition of the article storing the same RFID tag is T1, and the time of last information acquisition of the article is T2, and the starting time of the article is T0 ═ T1+ T2)/2;
s4, the server (101) analyzes and obtains the position of the real-time distance between the article and the RFID information acquisition device (102) as follows: (Td-T0) V-TV 0V, where DL is the location of the item from the RFID information collection device (102) in real time; td is real time; t0 is the starting 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 UHF RFID-based item location method as defined in claim 1, wherein the velocity V of the conveyor belt (107) in step S4 is obtained by a velocity sensor (103) in real time and transmitted to the server (101).
3. The UHF RFID-based item location method as claimed in claim 1, wherein when the conveyor belt (107) is an endless conveyor belt, the time of one revolution of the endless conveyor belt is TL, after interval TL/2, the corresponding T1 and T2 of the RFID tag are cleared to 0, and the steps S2-S4 are performed again.
4. The UHF RFID-based item location method as claimed in claim 1, further comprising an inquiry step, wherein after receiving the inquiry command, the server (101) outputs the real-time position of the item display block in real time according to the collected RFID tag information, and displays the real-time position on the display device (104).
5. An article positioning device based on ultrahigh frequency RFID is characterized by comprising
The ultrahigh frequency RFID information acquisition equipment (102) is arranged on one side of the conveyor belt (107) and is used for acquiring RFID information carried by articles and transmitting the RFID information to the server (101);
the server (101) is used for analyzing the received RFID information, storing a distance L1 between the first time information is acquired by the article with the same RFID label and the ultrahigh frequency RFID information acquisition device (102) and a distance L2 between the last time information is acquired and the ultrahigh frequency RFID information acquisition device (102), and then the length of the article display block is L1+ L2;
the time when the information of the item stored in the same RFID tag is collected for the first time is T1, and the time when the information of the item is collected for the last time is T2, then the starting time of the item is T0 ═ T1+ T2)/2;
the position for analyzing and obtaining the real-time distance between the article and the RFID information acquisition device (102) is as follows: (Td-T0) V-TV 0V, where DL is the location of the item from the RFID information collection device (102) in real time; td is real time; t0 is the starting 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 UHF RFID-based item location device of claim 5, further comprising a speed sensor (103) for acquiring the speed of the conveyor belt (107) in real time and transmitting to the server (101).
7. The UHF RFID-based item location device of claim 5, further comprising a query device for collecting RFID tag information and transmitting it to the server (101).
8. The UHF RFID-based item location device of claim 5, further comprising a display device (104) for receiving and displaying real-time location of the item display block outputted 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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| CN111144517B CN111144517B (en) | 2023-04-25 |
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Cited By (1)
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| CN111144517B (en) | 2023-04-25 |
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