CN116933814B - An intelligent electronic tag system for the Internet of Things - Google Patents
An intelligent electronic tag system for the Internet of Things Download PDFInfo
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- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
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- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/072—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising a plurality of integrated circuit chips
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- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0722—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips comprising an arrangement for testing the record carrier
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- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/0772—Physical layout of the record carrier
- G06K19/07732—Physical layout of the record carrier the record carrier having a housing or construction similar to well-known portable memory devices, such as SD cards, USB or memory sticks
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
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- 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
- G06K7/10366—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 interrogation device being adapted for miscellaneous applications
- G06K7/10465—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 interrogation device being adapted for miscellaneous applications the interrogation device being capable of self-diagnosis, e.g. in addition to or as part of the actual interrogation process
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Abstract
The invention discloses an intelligent electronic tag system for the Internet of things, which relates to the technical field of electronic tags, and comprises a tag module, a read-write module, a control module and an identification module, wherein the control module is used for receiving an instruction sent by the identification module and controlling the read-write module to finish the read-write operation of the tag module according to the instruction; the label module stores detailed information of corresponding books, adopts a double-electronic-label structure, and performs regular data synchronization and backup between double labels; the technical key points are as follows: the system adopts a double-label structure, and through the cooperation of each unit designed in the read-write module and the control module, under the condition that the corresponding label state value Rsv is obtained, whether the label can be read normally or not can be effectively known by comparing with a threshold range, the state of the corresponding label is obtained in real time, the integrity and the accuracy of book information are ensured, and meanwhile, the smooth performance of the reading work of the system is ensured.
Description
Technical Field
The invention relates to the technical field of electronic tags, in particular to an intelligent electronic tag system for the Internet of things.
Background
The electronic tag is an application of a wireless communication technology, is used for identifying and tracking articles or recording information, and consists of a radio frequency chip and an antenna, wherein a memory and a processor are integrated in the radio frequency chip, various data information can be stored and processed, the antenna is used for receiving and transmitting wireless radio frequency signals, communication with read-write equipment is realized, the electronic tag is communicated with the read-write equipment through the radio frequency signals, thus realizing reading and writing operation of information stored on the tag, and the electronic tag can be adhered, bound or embedded into an object so as to be used in the fields of supply chains, logistics, asset management, inventory tracking, intelligent transportation, security anti-counterfeiting, identity recognition and the like.
The existing library electronic tag identification system based on the Internet of things mainly comprises four parts, namely a read-write device, a controller, identification software and a database, wherein the wireless radio frequency read-write device adopts a CLRC663 high-frequency read-write chip, the controller adopts an STM32F103C8T6 singlechip and is used for receiving instructions sent by identification system software and controlling the CLRC663 to complete read-write operation of the electronic tag according to the instructions, SPI communication is adopted between the controller and the radio frequency read-write device, USART communication is adopted between the controller and a PC, and a communication protocol between the system identification software and the controller is a self-defined communication protocol, so that bidirectional transmission of a series of data such as book information, electronic tag information, student information, borrowing information and the like can be completed.
However, in books, a single electronic tag is usually adopted, the temperature and humidity changes in the library environment may affect the performance of the electronic tag, after long-term use, a part of the electronic tag may be lost or damaged, which may result in that the electronic tag cannot be read and identified by a reading device, and the storage function, and even the running stability of the whole system, may be affected.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an intelligent electronic tag system for the Internet of things, which adopts a double-tag structure, and by matching each unit designed in a read-write module and a control module, under the condition that a corresponding tag state value Rsv is obtained, whether the tag can be read normally or not can be effectively known by comparing the tag with a threshold range, the state of the corresponding tag can be obtained in real time, the integrity and the accuracy of book information are ensured, meanwhile, the smooth progress of the system for completing the reading work is ensured, and the problems in the background technology are solved.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
The intelligent electronic tag system for the Internet of things comprises a tag module, a read-write module, a control module and an identification module, wherein the control module is used for receiving an instruction sent by the identification module and controlling the read-write module to finish the read-write operation of the tag module according to the instruction;
The label module stores detailed information of corresponding books, adopts a double-electronic-label structure, and performs regular data synchronization and backup between double labels; two electronic tags can be installed on each book, one is used as a main tag for storing main book information and borrowing and returning records; the other is used as a standby tag for storing additional information and redundant data, and can also be used as a standby tag with synchronous data information in the application, in order to ensure that the standby tag can store the additional information and the redundant data and can store the information in the main tag, the memory capacity of the standby tag is designed to be 1.5 times to 2 times that of the main tag, and the additional information in the standby tag can comprise some book specific information, such as anti-counterfeiting information, so that the security and anti-theft effects are realized.
The information acquisition unit arranged in the read-write module is used for acquiring related parameters in the tag module;
The read-write module of the application can adopt a wireless radio frequency read-write device, and the wireless radio frequency read-write device has the following advantages: 1. Non-contact: the wireless radio frequency read-write equipment and the electronic tag are communicated through wireless radio frequency signals, the equipment is not required to be contacted with the tag, abrasion and pollution caused by physical contact are avoided, and read-write operation can be performed in a long-distance range; 2. high efficiency: the wireless radio frequency read-write equipment can realize rapid reading and writing of a large number of labels, has high-efficiency data processing capacity, is suitable for large-scale application scenes, and greatly improves the working efficiency; 3. convenience: the wireless radio frequency read-write equipment is simple and convenient to use, does not need to accurately aim at a target, can realize simultaneous identification of multiple tags, reduces operation difficulty and time cost, and improves the use convenience of users; 4. reliability: the wireless radio frequency communication has better penetrating power and anti-interference capability in a certain range, can stably work in a severe environment, and meanwhile, communication data between the wireless radio frequency read-write equipment and the electronic tag can be encrypted and authenticated, so that the safety of the data is improved; 5. and (3) automation: the wireless radio frequency read-write equipment can realize remote automatic identification and tracking of the articles without manual intervention, thereby reducing the labor cost and improving the automation degree and the production efficiency;
In general, the wireless radio frequency read-write equipment has the advantages of non-contact, high efficiency, convenience, reliability and automation, and provides a reliable, high-efficiency and convenient data acquisition and recognition technology for the application in the field of the Internet of things.
The control module is internally provided with a calculation unit, a threshold unit and a numerical analysis unit which are sequentially connected in a communication way, the calculation unit obtains a state value Rsv of a corresponding label according to related parameters, the threshold unit sets a threshold range for judging whether the corresponding label works normally or not, and the numerical analysis unit is used for completing comparison of the state value Rsv and the threshold range;
The read-write module is also internally provided with a tag identification strategy unit which is used for acquiring a comparison result of the numerical analysis unit and formulating a corresponding execution strategy according to the result.
Further, the detailed information of the corresponding book at least includes: the book name, the author, the publishing company, the publishing date and the price are convenient for a subsequent system to accurately read the information related to the corresponding book.
Furthermore, the tag module comprises a main tag and a standby tag, a backup unit is arranged between the main tag and the standby tag, the backup unit completes data series connection of the main tag and the standby tag, and regular data information synchronization and backup are carried out between the main tag and the standby tag.
Further, the relevant parameters in the tag module include the communication signal strength Si, the working frequency Wf and the recovery speed Ve of the corresponding tag;
wherein, communication signal strength Si: the communication signal intensity between the read-write module and the corresponding label;
operating frequency Wf: the corresponding electronic tag has a working frequency;
Recovery speed Ve: the read-write module sends an instruction to the corresponding tag, and the time for the corresponding tag to reply the instruction is the reply speed.
Specifically, the communication signal strength Si is obtained by: a special signal intensity measuring instrument is used, and the special signal intensity measuring instrument is placed between the read-write equipment and the tag, so that the intensity value of the communication signal can be measured; the working frequency Wf is obtained by the following steps: the labels are printed with the identifiers of the working frequencies on the shell or the surface, the working frequency information of the labels can be directly obtained by checking the appearance of the labels, and the corresponding labels can be scanned and identified by adopting a read-write module according to actual requirements, and at the moment, the read-write module adopts radio frequency identification equipment (such as an RFID reader-writer) which automatically reads the working frequency information of the corresponding labels; the recovery speed Ve is obtained by the following steps: and using the radio frequency identification equipment to send the instruction to the corresponding tag, recording the time stamp of the sent instruction, waiting for the corresponding tag to reply the instruction, recording the time stamp of the reply instruction again, and obtaining the time of the corresponding tag to reply the instruction by calculating the time difference between the two time stamps.
Further, the process of obtaining the state value Rsv of the corresponding tag is as follows:
After normalizing the communication signal intensity Si, the working frequency Wf and the recovery speed Ve, correlating to obtain a state value Rsv of a corresponding label;
；
In the formula, 、AndPreset proportionality coefficients of communication signal intensity Si, working frequency Wf and recovery speed Ve respectively, and、AndAll are greater than 0, if the recovery speed Ve is infinite, the state value Rsv of the corresponding tag will necessarily exceed the threshold range, and the main tag cannot be read normally, and the main tag is faulty or damaged at this time.
Further, after comparing the obtained state value Rsv of the corresponding tag with the threshold range, if the state value Rsv of the main tag is outside the threshold range, the main tag cannot be read normally, and if the state value Rsv of the main tag is within the threshold range, the main tag can be read normally;
Wherein the threshold range is obtained through actual test and verification; the specific acquisition mode of the threshold range is as follows: performing actual tests or evaluating the performance of the corresponding label in an actual application scene, acquiring performance data of the corresponding label under different conditions through practice and tests, observing which numerical ranges are considered to work normally, and setting a reasonable threshold range according to test results, so that a system can efficiently obtain whether the corresponding label is normal or not.
Further, the process of formulating the corresponding execution strategy according to the result is as follows: if the main label can be read normally, executing the first strategy, and if the main label can not be read normally, executing the second strategy.
Further, the first strategy is to directly read the information stored in the main label.
Further, the second strategy is to start the standby tag and acquire the state value Rsv of the standby tag, if the state value Rsv of the standby tag is out of the threshold range, the damage of the tag module is indicated, and the alarm maintenance is performed;
If the state value Rsv of the standby label is within the threshold value range, the information stored in the standby label is directly read.
The application method of the intelligent electronic tag system for the Internet of things comprises the following specific steps:
step one, collecting the communication signal intensity Si, the working frequency Wf and the recovery speed Ve of an electronic tag;
step two, according to the communication signal intensity Si, the working frequency Wf and the recovery speed Ve in the step one, obtaining the state value Rsv of the corresponding label, wherein the specific mode is as follows: after normalizing the communication signal intensity Si, the working frequency Wf and the recovery speed Ve, correlating to obtain a state value Rsv of a corresponding label;
；
In the formula, 、AndPreset proportionality coefficients of communication signal intensity Si, working frequency Wf and recovery speed Ve respectively, and、AndAre all greater than 0;
Comparing the obtained state value Rsv of the corresponding label with a threshold range, and if the state value Rsv of the main label is out of the threshold range, indicating that the main label cannot be read normally; if the state value Rsv of the main label is within the threshold value range, the main label can be read normally;
step three, obtaining a comparison result of the numerical analysis unit, and formulating a corresponding execution strategy according to the result; if the master tag can be read normally, executing a first strategy: reading information stored in the main label; if the main tag cannot be read normally, executing a second strategy: starting a standby tag, acquiring a state value Rsv of the standby tag, if the state value Rsv of the standby tag is out of a threshold range, indicating that the tag module is damaged, and alarming for maintenance; if the state value Rsv of the standby label is within the threshold value range, the information stored in the standby label is read.
The invention provides an intelligent electronic tag system for the Internet of things, which has the following beneficial effects:
The original electronic tag is designed into a double-tag structure, and the two tags are subjected to regular data synchronization and backup through the backup unit, so that the information storage capacity can be increased to a certain extent, and a more stable information storage function is realized;
Under the scene of dealing with the damage of the label or being unable to be identified, through carrying out the cooperation with each unit that designs in read-write module and the control module and using, under the condition of obtaining corresponding label state value Rsv, can effectually learn whether the label can normally read through comparing with threshold value scope, acquire the state of corresponding label in real time, can in time enable reserve label after single label takes place to damage, guarantee the integrality and the accuracy of books information, also guaranteed the smooth going on of system completion reading work simultaneously.
Drawings
FIG. 1 is a schematic diagram of an electronic tag system of the prior art intelligent Internet of things;
fig. 2 is a schematic block diagram of an intelligent electronic tag system for the internet of things according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1: referring to fig. 2, the invention provides an intelligent electronic tag system for internet of things, which comprises a tag module, a read-write module, a control module and an identification module;
The label module adopts a double-label structure, and performs regular data synchronization and backup between the double labels;
The label module comprises a main label and a standby label, a backup unit is arranged between the main label and the standby label, detailed information of the corresponding book is stored in the label module, the detailed information at least comprises a book name, an author, a publishing company, a publishing date and a price, a subsequent system can conveniently and accurately read information related to the corresponding book, and the main label and the standby label are electronic labels;
the backup unit is used for completing data series connection of the main label and the standby label, and periodically synchronizing and backing up data information between the main label and the standby label; the original electronic tag is designed into a double-tag structure, and the two tags are subjected to regular data synchronization and backup through the backup unit, so that the information storage capacity can be increased to a certain extent, and a more stable information storage function is realized;
In a specific application scenario: two electronic tags are installed on each book, one is used as a main tag and used for storing main book information and borrowing and returning records; the other is used as a standby tag for storing additional information and redundant data, and can also be used as a standby tag with synchronous data information in the application, in order to ensure that the standby tag can store the additional information and the redundant data and can store the information in the main tag, the memory capacity of the standby tag is designed to be 1.5-2 times that of the main tag, and the additional information in the standby tag can comprise some book specific information, such as anti-counterfeiting information, thereby playing a role in confidentiality and anti-theft.
The read-write module is used for reading information stored in the tag module, an information acquisition unit and a tag identification strategy unit are arranged in the read-write module, the read-write module can adopt wireless radio frequency read-write equipment, the wireless radio frequency read-write equipment is equipment for communicating with the electronic tag through a wireless radio frequency technology, and the read-write module consists of a radio frequency reader or a reader, a scanner or a read-write head and is used for carrying out data interaction with the electronic tag, and the wireless radio frequency read-write equipment communicates with the electronic tag through radio frequency signals to realize operations such as reading, writing and programming of information stored on the tag;
The radio frequency read-write equipment generally comprises a radio frequency module, an antenna, a control circuit and an interface component, wherein the radio frequency module is used for generating and receiving radio frequency signals, the antenna is used for transmitting and receiving radio frequency signals, the control circuit is matched with the radio frequency module to realize communication with the electronic tag, instruction transmission and data processing, and the interface part can be connected with a computer or other equipment in a USB (universal serial bus), RS232 or Ethernet mode to transmit the read information of the electronic tag to an upper application program for processing and analysis.
The wireless radio frequency read-write equipment has the following advantages:
1. Non-contact: the wireless radio frequency read-write equipment and the electronic tag are communicated through wireless radio frequency signals, the equipment is not required to be contacted with the tag, abrasion and pollution caused by physical contact are avoided, and read-write operation can be performed in a long-distance range;
2. High efficiency: the wireless radio frequency read-write equipment can realize rapid reading and writing of a large number of labels, has high-efficiency data processing capacity, is suitable for large-scale application scenes, and greatly improves the working efficiency;
3. Convenience: the wireless radio frequency read-write equipment is simple and convenient to use, does not need to accurately aim at a target, can realize simultaneous identification of multiple tags, reduces operation difficulty and time cost, and improves the use convenience of users;
4. Reliability: the wireless radio frequency communication has better penetrating power and anti-interference capability in a certain range, can stably work in a severe environment, and meanwhile, communication data between the wireless radio frequency read-write equipment and the electronic tag can be encrypted and authenticated, so that the safety of the data is improved;
5. and (3) automation: the wireless radio frequency read-write equipment can realize remote automatic identification and tracking of the articles without manual intervention, thereby reducing the labor cost and improving the automation degree and the production efficiency;
In general, the wireless radio frequency read-write equipment has the advantages of non-contact, high efficiency, convenience, reliability and automation, and provides a reliable, high-efficiency and convenient data acquisition and recognition technology for the application in the field of the Internet of things.
The information acquisition unit in the read-write module is used for acquiring relevant parameters in the tag module, wherein the relevant parameters comprise: communication signal strength Si, operating frequency Wf, and return speed Ve;
note that, the communication signal strength Si: the communication signal intensity between the read-write module and the corresponding label;
the communication signal strength Si is obtained by: the strength value of the communication signal can be measured using a special signal strength meter placed between the read-write device and the tag, the signal strength meter typically using signal strength units (e.g., RSSI or dBm) to represent the signal strength;
operating frequency Wf: the corresponding electronic tag has own working frequency;
The working frequency Wf is obtained by the following steps: the first mode is that the electronic tag is printed with the identification of the working frequency on the shell or the surface, and the working frequency information of the tag can be directly obtained by checking the appearance of the tag; the second mode is that the read-write module is adopted to scan and identify the corresponding label, at the moment, the read-write module adopts radio frequency identification equipment (such as an RFID reader-writer), and the radio frequency identification equipment automatically reads the working frequency information of the corresponding label;
Recovery speed Ve: the read-write module sends an instruction to the corresponding tag, the time for replying the instruction to the corresponding tag is the replying speed, and if the corresponding tag is damaged, the replying speed is infinite;
for example: example instructions and tag replies to the SPI protocol, wherein the instructions: reading user memory area data of the corresponding tag; and (3) sending an instruction: the read-write module sends a "read user memory area" instruction specifying the address and length to be read (e.g., read 4 bytes of data starting at address 0); corresponding tag reply: the tag replies the user memory area data with the designated address and length to the read-write module.
The recovery speed Ve is obtained by the following steps: and using radio frequency identification equipment (such as an RFID reader-writer) to send an instruction to the corresponding tag, recording the time stamp of the sent instruction, waiting for the corresponding tag to reply the instruction, recording the time stamp of the reply instruction again, and obtaining the time of the corresponding tag to reply the instruction by calculating the time difference between the two time stamps.
The control module is used for receiving the instruction sent by the identification module, controlling the read-write module to complete read-write operation of the electronic tag according to the instruction, communicating with the radio frequency read-write equipment through SPI, and arranging a calculation unit, a threshold unit and a numerical analysis unit which are connected in sequence in the control module;
The computing unit is used for acquiring a state value Rsv of the corresponding label according to the related parameters acquired by the information acquisition unit;
After normalizing the communication signal intensity Si, the working frequency Wf and the recovery speed Ve, correlating to obtain a state value Rsv of a corresponding label;
；
In the formula, 、AndPreset proportionality coefficients of communication signal intensity Si, working frequency Wf and recovery speed Ve respectively, and、AndAre all greater than 0.
The threshold value unit is used for setting a threshold value range and judging whether the corresponding label works normally or not, wherein the threshold value range is obtained through actual test and verification; the specific acquisition mode of the threshold range is as follows: performing actual tests or evaluating the performance of the corresponding label in an actual application scene, obtaining performance data of the corresponding label under different conditions through practice and tests, observing which numerical ranges are considered to work normally, and setting a reasonable threshold range according to test results.
The numerical analysis unit is used for comparing the acquired state value Rsv of the corresponding label with a threshold range; if the state value Rsv of the main label is out of the threshold range, the main label cannot be read normally; if the state value Rsv of the main tag is within the threshold value range, the main tag can be read normally.
The label identification strategy unit in the read-write module is used for obtaining the comparison result of the numerical analysis unit and formulating a corresponding execution strategy according to the result;
If the master tag can be read normally, executing a first strategy: reading information stored in the main label;
if the main tag cannot be read normally, executing a second strategy: starting a standby tag, acquiring a state value Rsv of the standby tag, if the state value Rsv of the standby tag is out of a threshold range, indicating that the tag module is damaged, and alarming for maintenance; if the state value Rsv of the standby label is within the threshold value range, the information stored in the standby label is read.
By adopting the technical scheme: under the scene of dealing with the damage of the label or being unable to be identified, through carrying out the cooperation with each unit that designs in read-write module and the control module and using, under the condition of obtaining corresponding label state value Rsv, can effectually learn whether the label can normally read through comparing with threshold value scope, acquire the state of corresponding label in real time, can in time enable reserve label after single label takes place to damage, guarantee the integrality and the accuracy of books information, also guaranteed the smooth going on of system completion reading work simultaneously.
The identification module can adopt a PC, built-in identification software is developed based on a C# language and windows platform, a communication protocol between the identification module and the control module is a self-defined communication protocol, and particularly USART communication can be adopted, so that bidirectional transmission of electronic tag information, student information and borrowing information data can be completed, and classification and input work of books can be easily completed only by means of the identification software in the identification module.
It should be noted that: USART communication is a universal synchronous/asynchronous transceiving transmission protocol for data transmission between microcontrollers, embedded systems and communication devices;
USART communication has several advantages:
1. multifunction: USART supports both synchronous and asynchronous transmissions, so that it can adapt to different transmission requirements;
2. High efficiency: the USART supports two-way communication, can transmit and receive data at the same time, and in addition, has higher transmission rate, and can realize rapid and reliable data transmission by adjusting fixed baud rate;
3. flexibility: the USART supports a plurality of data frame formats and can be flexibly configured according to application requirements;
4. low cost: USART is often used in microcontrollers and embedded systems, and its hardware resources are less consumed, and no additional chips or devices are needed, so that the cost of the system can be reduced;
5. Easy realization and integration: many microcontrollers and communication chips integrate the function of USART, so that the use of USART for communication is very convenient and simple;
in general, USART communication has the advantages of versatility, efficiency, flexibility, low cost, and ease of implementation and integration, making it a common data communication protocol in embedded systems and communication devices.
Example 2: the invention provides a use method of an intelligent electronic tag system for the Internet of things, which comprises the following specific steps:
step one, collecting the communication signal intensity Si, the working frequency Wf and the recovery speed Ve of an electronic tag;
step two, according to the communication signal intensity Si, the working frequency Wf and the recovery speed Ve in the step one, obtaining the state value Rsv of the corresponding label, wherein the specific mode is as follows: after normalizing the communication signal intensity Si, the working frequency Wf and the recovery speed Ve, correlating to obtain a state value Rsv of a corresponding label;
；
In the formula, 、AndPreset proportionality coefficients of communication signal intensity Si, working frequency Wf and recovery speed Ve respectively, and、AndAre all greater than 0;
Comparing the obtained state value Rsv of the corresponding label with a threshold range, and if the state value Rsv of the main label is out of the threshold range, indicating that the main label cannot be read normally; if the state value Rsv of the main label is within the threshold value range, the main label can be read normally;
step three, obtaining a comparison result of the numerical analysis unit, and formulating a corresponding execution strategy according to the result; if the master tag can be read normally, executing a first strategy: reading information stored in the main label; if the main tag cannot be read normally, executing a second strategy: starting a standby tag, acquiring a state value Rsv of the standby tag, if the state value Rsv of the standby tag is out of a threshold range, indicating that the tag module is damaged, and alarming for maintenance; if the state value Rsv of the standby label is within the threshold value range, the information stored in the standby label is read.
The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application.
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| CN103487676A (en) * | 2013-07-08 | 2014-01-01 | 重庆市城投金卡信息产业股份有限公司 | Method and device used for testing performance of RFID electronic tag |
| CN217181550U (en) * | 2022-03-30 | 2022-08-12 | 国能思达科技有限公司 | Wind power equipment management system based on electronic tags |
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| US8451096B2 (en) * | 2007-06-06 | 2013-05-28 | Intermec Ip Corp. | RFID read/write station and a method for operating such |
| US7898419B2 (en) * | 2007-07-27 | 2011-03-01 | Lucomm Technologies, Inc. | Systems and methods for object localization and path identification based on RFID sensing |
| TWI450199B (en) * | 2011-05-24 | 2014-08-21 | Claridy Solutions Inc | Application of Radio Frequency Identification Technology in Books |
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| CN103487676A (en) * | 2013-07-08 | 2014-01-01 | 重庆市城投金卡信息产业股份有限公司 | Method and device used for testing performance of RFID electronic tag |
| CN217181550U (en) * | 2022-03-30 | 2022-08-12 | 国能思达科技有限公司 | Wind power equipment management system based on electronic tags |
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