CN109447558B - Method for selecting efficient read-write interval based on RFID (radio frequency identification) equipment - Google Patents
Method for selecting efficient read-write interval based on RFID (radio frequency identification) equipment Download PDFInfo
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- CN109447558B CN109447558B CN201811336085.5A CN201811336085A CN109447558B CN 109447558 B CN109447558 B CN 109447558B CN 201811336085 A CN201811336085 A CN 201811336085A CN 109447558 B CN109447558 B CN 109447558B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
- G06Q10/087—Inventory or stock management, e.g. order filling, procurement or balancing against orders
- G06Q10/0875—Itemisation or classification of parts, supplies or services, e.g. bill of materials
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- G—PHYSICS
- 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
Abstract
The invention discloses a method for selecting a high-efficiency read-write interval based on RFID equipment, which aims at a management system implementation method established in the express industry, realizes the establishment of an RFID management system in a flow, establishes different databases, associates the different databases in the RFID management system through an invoice number to realize matching, finally gives feedback, optimizes a model by utilizing a big data technology along with the accumulation of actual data, and adjusts the optimal read-write frequency interval selection result of the RFID technology.
Description
Technical Field
The invention relates to the technical field of logistics, in particular to a method for selecting an efficient read-write interval based on RFID equipment.
Background
The RFID technology is applied to part of links of the express industry due to the characteristics of rapidness, high efficiency and the like. The basic implementation mode is that an RFID storage management system is established, so that the electronic tag of each article has a specific piece of information, RFID readers are arranged to read the information and actively transmit the information content during storage and delivery, and workers do not need to check one by one. The items may be scanned inside the warehouse using RFID hand-held terminals. The reader-writer can transmit information to the warehousing management system, when errors occur, manual correction is carried out, position tracking can also be carried out after warehouse exit, the implementation process in the whole RFID system is basically complete, and the working frequency of the electronic tag is one of the most important characteristics of the RFID system.
In practical application, the typical frequencies of China are 13.56MHz, 860 MHz-960 MHz, 2.45GHz and the like, the RFID technology improves the working efficiency, but the selectable read-write frequencies are various, only the common frequencies and ranges of high, medium and low frequencies are specified at present, a read-write interval method for judging the accuracy and the high efficiency is not provided, and the read intervals are different when the RFID technology is applied to the industry.
Disclosure of Invention
Aiming at the problems, the invention provides a method for selecting a high-efficiency read-write interval based on RFID equipment, aiming at finding out a method for selecting the high-efficiency read-write interval for the RFID equipment in the express industry by designing a scientific experimental method and combining a calculation algorithm on the basis of matching of an RFID management system; the optimal read-write interval is judged by calculating the minimum value of the wireless communication transmission loss, and the problem of selecting the optimal read-write frequency interval by using the RFID technology during warehousing and ex-warehouse is solved.
The invention realizes the purpose through the following technical scheme:
a method for selecting a high-efficiency read-write interval based on RFID equipment comprises the following steps:
step one, establishing an RFID management system, and combining an express information system and RFID read-write information;
step two, an express information management database a, a read-write database b and a database c are established, wherein the database a is filled and generated by an operator or a user and used for storing basic information of orders and waybills, the database b is obtained after being read by a reader and used for comparing whether the information of the database a is accurate, the data of the database c is generated after information comparison is carried out on the express information management database a and the read-write database b and used for storing comparison results and information of statistical information abnormal rate, tables in the databases a, b and c are associated by waybills numbers, and a one-to-one relationship exists;
step three, selecting a first measuring interval, such as 13.56 MHz-20 MHz, and reading the electronic tags of the express mails by using an RFID reader-writer;
step four, uploading data, wherein a system acquires electronic tag information with the most complete information and automatically removes duplication, if the electronic tag is found to be complete and normal after the system is matched after the first scanning, writing is not performed when the same tag is read for the second time, if the complete information is not acquired all the time, writing is continuously performed when the same tag is read for the second time, matching is performed with the most complete information after the nth scanning to acquire a result, n-1 repeated reading and writing are deleted from a reading and writing database b, and reading and writing of the data can be completed only after n times of scanning is performed on a batch of express mail due to the limitation of distance;
step five, automatically counting by the system, giving normal and abnormal information feedback according to the matching result of the express information management database a and the read-write database b, and storing the normal and abnormal information feedback in a database c to obtain a first abnormal feedback value x 1;
step six, repeating the test for 1000 times, obtaining 1000 abnormal feedback values xn { [ x 1-x 1000] }, and storing the values in a database c;
and seventhly, calculating the abnormal rate of the abnormal feedback value by the system, and calculating an arithmetic mean value according to the same weight of each parameter:
step eight, taking a characteristic value interval corresponding to the minimum value of the average value as a frequency range T1 with the minimum reading loss rate;
step nine, repeating the step 3 to the step 8 to complete the first experiment, obtaining T of each interval frequency range of the first experiment, taking out the frequency interval Tmin-1 corresponding to the minimum loss after comparison, and repeating the step 3 to the step 8 again to complete the second experiment;
step ten, obtaining the final Tmin, namely the frequency interval of the high-frequency reader-writer for obtaining the best reading-writing effect, wherein the interval is used for setting the default frequency of the express delivery/warehousing.
The further scheme is as follows: when the experiment is repeated, the frequency interval corresponding to the minimum abnormal value is selected as a variable range, and the frequency interval is divided into 10 frequency intervals with equal difference and controlled within 1 MHz.
The further scheme is as follows: and (4) optimizing the algorithm by utilizing a big data technology along with the continuous accumulation of the actual data, and continuously correcting the optimal read-write interval.
The invention has the beneficial effects that:
the invention relates to a method for selecting a high-efficiency read-write interval based on RFID equipment, which aims at a management system implementation method established in the express industry, realizes the establishment of an RFID management system in a flow, establishes different databases, associates the different databases in the RFID management system through an invoice number to realize matching, finally gives feedback, optimizes a model by utilizing a big data technology along with the accumulation of actual data, and adjusts the optimal read-write frequency interval selection result of the RFID technology.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the embodiments or the drawings needed to be practical in the prior art description, and obviously, the drawings in the following description are only some embodiments of the embodiments, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for selecting an efficient read-write interval based on an RFID device according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
As shown in fig. 1, a method for selecting an efficient read-write interval based on an RFID device is characterized by comprising the following steps:
step one, establishing an RFID management system, and combining an express information system and RFID read-write information;
step two, an express information management database a, a read-write database b and a database c are established, wherein the database a is filled and generated by an operator or a user and used for storing basic information of orders and waybills, the database b is obtained after being read by a reader and used for comparing whether the information of the database a is accurate, the data of the database c is generated after information comparison is carried out on the express information management database a and the read-write database b and used for storing comparison results and information of statistical information abnormal rate, tables in the databases a, b and c are associated by waybills numbers, and a one-to-one relationship exists;
step three, selecting a first measuring interval, such as 13.56 MHz-20 MHz, and reading the electronic tags of the express mails by using an RFID reader-writer;
step four, uploading data, wherein a system acquires electronic tag information with the most complete information and automatically removes duplication, if the electronic tag is found to be complete and normal after the system is matched after the first scanning, writing is not performed when the same tag is read for the second time, if the complete information is not acquired all the time, writing is continuously performed when the same tag is read for the second time, matching is performed with the most complete information after the nth scanning to acquire a result, n-1 repeated reading and writing are deleted from a reading and writing database b, and reading and writing of the data can be completed only after n times of scanning is performed on a batch of express mail due to the limitation of distance;
step five, automatically counting by the system, giving normal and abnormal information feedback according to the matching result of the express information management database a and the read-write database b, and storing the normal and abnormal information feedback in a database c to obtain a first abnormal feedback value x 1;
step six, repeating the test for 1000 times, obtaining 1000 abnormal feedback values xn { [ x 1-x 1000] }, and storing the values in a database c;
and seventhly, calculating the abnormal rate of the abnormal feedback value by the system, and calculating an arithmetic mean value according to the same weight of each parameter:
step eight, taking a characteristic value interval corresponding to the minimum value of the average value as a frequency range T1 with the minimum reading loss rate;
step nine, repeating the step 3 to the step 8 to complete the first experiment, obtaining T of each interval frequency range of the first experiment, taking out the frequency interval Tmin-1 corresponding to the minimum loss after comparison, and repeating the step 3 to the step 8 again to complete the second experiment;
step ten, obtaining the final Tmin, namely the frequency interval of the high-frequency reader-writer for obtaining the best reading-writing effect, wherein the interval is used for setting the default frequency of the express delivery/warehousing.
As shown in fig. 1, in the method of the present invention, the efficiency of reading in and out of a warehouse is determined after replacing a conventional electronic barcode with an RFID electronic tag, important parts of an RFID system are a reader/writer, a tag and a wireless tag, when the tag enters an effective working area, an induced current is generated, and the electronic tag is activated and transmits a signal in a wireless manner.
The invention mainly aims at the identification of multiple labels of express delivery, selects a high-frequency (1 MHz-400 MHz) radio frequency identification technology with a mature system, high transmission speed and high safety performance, takes a passive label as an object, and adopts the following algorithm for determination in order to obtain the best reading effect of a reader-writer in a high-frequency state when express delivery is delivered out of a warehouse and put in a warehouse (namely, the transmission loss is minimum):
in an ideal state, namely, when the periphery of the antenna is in infinite vacuum, the radio wave propagates, when the radio wave propagates in a free space, the energy of the radio wave is not absorbed by an obstacle, and the radio wave does not generate reflection or scattering, and a method for calculating the wireless communication distance when the radio wave propagates in the free space comprises the following steps:
[Lfs](dB)＝32.44+201gd(km)+201gf(MHz)；
lfs is transmission loss, d is transmission distance, and MHz is frequency unit;
from the above formula, the propagation loss (also called attenuation) of the electric wave in free space is only related to the working frequency f and the propagation distance d, and when f or d is increased by one time, the [ Lfs ] will be increased by 6dB respectively. The invention is divided into two types according to the order of the express mail, one is a small amount of short-distance 5-10em reading and writing, the other is a large order of magnitude and is provided with a special long-distance reading head and a long-distance card, the reading and writing of 1 meter can be achieved, the d transmission distance of the two types of reading and writing is stable and effective in an effective reading and writing range interval, and the frequency becomes a variable of a measuring condition.
In the measuring method, the frequency is variable and is divided into two experiments, and different variable ranges are selected. Considering that the conventional high-frequency is 13.56MHz, the variable range is [13.56MHz, 400MHz ], in order to facilitate taking values, in a first experiment, a measurement interval is different from the first one, every 10MHz is a measurement set, and the total characteristic value measurement module interval is { [13.56 MHz-20 MHz, 20MHz-30MHz,.., 390 MHz-400 MHz ] }. In the first repetition experiment, the frequency interval corresponding to the selected minimum abnormal value was divided into 10 frequency intervals having the same difference and controlled to be within 1MHz, and the same experiment procedure as in the first repetition experiment was performed.
The invention relates to a management system implementation method aiming at express industry, which comprises the steps of establishing an RFID management system in the implementation process, establishing different databases, carrying out association and matching of database tables in the RFID management system through waybill numbers, finally giving feedback, carrying out model optimization by using a big data technology along with actual data accumulation, and adjusting the optimal read-write frequency interval selection result of the RFID technology.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims. It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition. In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (3)
1. A method for selecting a high-efficiency read-write interval based on RFID equipment is characterized by comprising the following steps:
step one, establishing an RFID management system, and combining an express information system and RFID read-write information;
step two, an express information management database a, a read-write database b and a database c are established, wherein the database a is filled and generated by an operator or a user and used for storing basic information of orders and waybills, the database b is obtained after being read by a reader and used for comparing whether the information of the database a is accurate, the data of the database c is generated after information comparison is carried out on the express information management database a and the read-write database b and used for storing comparison results and information of statistical information abnormal rate, tables in the databases a, b and c are associated by waybills numbers, and a one-to-one relationship exists;
step three, selecting a first measuring interval of 13.56 MHz-20 MHz, and reading the electronic tags of the express mails by using an RFID reader-writer;
step four, uploading data, wherein a system acquires electronic tag information with the most complete information and automatically removes duplication, if the electronic tag is found to be complete and normal after the system is matched after the first scanning, writing is not performed when the same tag is read for the second time, if the complete information is not acquired all the time, writing is continuously performed when the same tag is read for the second time, matching is performed with the most complete information after the nth scanning to acquire a result, n-1 repeated reading and writing are deleted from a reading and writing database b, and reading and writing of the data can be completed only after n times of scanning is performed on a batch of express mail due to the limitation of distance;
step five, automatically counting by the system, giving normal and abnormal information feedback according to the matching result of the express information management database a and the read-write database b, storing the normal and abnormal information feedback in a database c, and obtaining a first abnormal feedback value x1；
Step six, repeating the test for 1000 times, and obtaining 1000 abnormal feedback values xn{[x1～x1000]The data is stored in a database c;
and seventhly, calculating the abnormal rate of the abnormal feedback value by the system, and calculating an arithmetic mean value according to the same weight of each parameter:
step eight, taking a characteristic value interval corresponding to the minimum value of the average value as a frequency range T1 with the minimum reading loss rate;
step nine, repeating the step three to the step eight to complete the first experiment, obtaining the T of each interval frequency range of the first experiment, taking out the frequency interval Tmin-1 corresponding to the minimum loss after comparison, and repeating the step three to the step eight to complete the second experiment;
step ten, obtaining the final Tmin, namely the frequency interval of the high-frequency reader-writer for obtaining the best reading-writing effect, wherein the interval is used for setting the default frequency of the express delivery/warehousing.
2. The method for selecting high-efficiency reading and writing intervals based on RFID equipment as claimed in claim 1, wherein the frequency interval corresponding to the minimum abnormal value selected in the repeated experiments is used as a variable range and is subdivided into 10 frequency intervals with equal differences and the difference is controlled within 1 MHz.
3. The method of claim 1, wherein the algorithm is optimized by using big data technology to continuously modify the optimal read-write interval as the actual data is continuously accumulated.
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