CN108647545A - Multiple antennas time-sharing multiplex rf read-write device and its reading/writing method - Google Patents
Multiple antennas time-sharing multiplex rf read-write device and its reading/writing method Download PDFInfo
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- CN108647545A CN108647545A CN201810603388.2A CN201810603388A CN108647545A CN 108647545 A CN108647545 A CN 108647545A CN 201810603388 A CN201810603388 A CN 201810603388A CN 108647545 A CN108647545 A CN 108647545A
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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
- G06K7/10316—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 using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10356—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 using at least one antenna particularly designed for interrogating the wireless record carriers using a plurality of antennas, e.g. configurations including means to resolve interference between the plurality of antennas
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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
- G06K7/10198—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves setting parameters for the interrogator, e.g. programming parameters and operating modes
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- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a kind of multiple antennas time-sharing multiplex rf read-write device and its reading/writing methods, including power supply, processor, RF Signal chip, multi-channel analog signal switching chip, antenna, radio-frequency card；The power supply is connect with processor, RF Signal chip and multi-channel analog signal switching chip respectively, wherein the output end of processor is connect with multi-channel analog signal switching chip, the input terminal of the processor is connect with RF Signal chip, and RF Signal chip is connect with multi-channel analog signal switching chip.The present invention uses a RF Signal chip, the radiofrequency signal of RF Signal chip is connected on the multi-channel analog signal switching total input and output foot of chip, a radio-frequency antenna is connect respectively on branch's input and output foot that multi-channel analog signal switches chip, and radiofrequency signal is switched to each antenna by processor timesharing to realize while read multiple not in the function of the radio-frequency card of same position.
Description
Technical field
The present invention relates to radio frequency read-write identification technology field more particularly to a kind of multiple antennas time-sharing multiplex rf read-write devices
And its reading/writing method.
Background technology
Radio frequency identification (RFID) technology is a kind of non-contact automatic identification technology realized using radio communication.Its profit
Realize that contactless information is passed through transmitted information and achievees the purpose that identify object with the Space Coupling of radiofrequency signal.It
By radiofrequency signal automatic identification target object and related data can be obtained, manual intervention is not necessarily in identification process, can be worked
In various adverse circumstances, it can be used for identifying while the identification of high-speed moving object and multiple targets, it is swift and convenient to operate.When
The universal and development degree of modern network, rapidly promotes the development of all trades and professions, creates " internet+" epoch, same with this
When neozoic technology of Internet of things also grown rapidly, radio frequency identification (RFID) technology is considered as object by countries in the world for a long time
The key of networking technology development, such as in warehousing management, vehicular traffic management, library book management, merchandise sales, logistics checking
It is used widely in equal fields.
Existing RF Signal chip can only connect an antenna mostly, it cannot read multiple simultaneously not in same position
The radio-frequency card of (5cm or more is spaced between radio-frequency card) can only just increase multiple identifications and set for needing the occasion of more antennas
Standby, cost will be greatly increased by increasing an identification equipment, and working efficiency is also low, and this mode obviously cannot meet use and want
It asks.
Invention content
For the technical problem for overcoming the existing single recognition efficiency of radio frequency read-write equipment low, the present invention provides a kind of multiple antennas
Time-sharing multiplex rf read-write device and its reading/writing method.
To achieve the above object, the present invention provides the following technical solutions：Multiple antennas time-sharing multiplex rf read-write device, including
Power supply, processor, RF Signal chip, multi-channel analog signal switching chip, antenna, radio-frequency card；The power supply respectively with
Processor, RF Signal chip are connected with multi-channel analog signal switching chip, wherein the output end and multichannel of processor
Analog signal switches chip connection, and the input terminal of the processor connect with RF Signal chip, RF Signal chip and more
Channel analog signal switches chip connection；The connecting pin of the multi-channel analog signal switching chip is parallel with mutiple antennas,
In each antenna be connected separately with radio-frequency card.
Preferably, the processor, including data processing module, data transmission blocks, data check module and simulation letter
Number switching control module, wherein data processing module are connect with data transmission blocks and data correction verification module respectively, analog signal
Switching control module is connect with multi-channel analog signal switching chip.
Preferably, the RF Signal chip, including coding module, decoder module, receiving module and transmitting module,
Middle coding module is connect with transmitting module, and decoder module is connect with receiving module；The receiving module and transmitting module respectively with
Multi-channel analog signal switches chip connection.
Preferably, the coding module and decoder module are connect with processor respectively, and wherein coding module is sent with data
Module connects, and decoder module is connect with data check module.
A kind of reading/writing method of multiple antennas time-sharing multiplex rf read-write device, this method include passive card seeking pattern and master
Dynamic card seeking pattern, wherein passive card seeking pattern and active card seeking pattern can be opened and closed alternately.
Passive card seeking pattern, includes the following steps：
The preset parameter value of each module of S1, initialization processor；
S2, the preset parameter value that each module of RF Signal chip is initialized by processor, initialize and successfully continue to hold
Row next step S3, otherwise re-executes previous step S1；
S3, RF Signal chip operation is configured in the operating mode that can read and write radio-frequency card by processor, be configured to
Work(continues to execute next step S4, otherwise re-executes previous step S2；
S4, RF Signal chip receive the order data of user writable radio-frequency card, receive the read write command of read-write card after
Continuous to execute next step S5, step S4 need to be re-executed by not receiving read write command；
S5, RF Signal chip obtain user and need to read and write the radio-frequency card in respective antenna channel；
S6, processor need the respective radio-frequency card channel read and write control multi-channel analog signal to switch chip according to user,
The radiofrequency signal of RF Signal chip is switched on the antenna of corresponding channel, RF Signal is then controlled by processor
Chip identification user's radio-frequency card whether there is, and recognizes radio-frequency card and continues to execute next step S7, unidentified to arrive radio-frequency card, send
Error code information prompts no radio-frequency card, and re-executes S4；
S7, judge that user needs Card Reader or writes card, if desired Card Reader then executes next step S8, if desired writes card then
Execute step S9；
S8, Card Reader：Processor control RF Signal chip read radio-frequency card data information, and judge whether read at
Work(is read successfully, sends radio-frequency card data to user；Failure is read, error code information is sent, user's radio-frequency card is prompted to read
Failure；
S9, card is write：Processor controls RF Signal chip and needs the data information inputted that radio-frequency card is written user, and
Judge whether to write card success, write card success, send correct code information, user's radio-frequency card is prompted to write card success；Card crash is write, is sent out
Error code information is sent, user's radio-frequency card is prompted to write card crash.
Active card seeking pattern, includes the following steps：
The preset parameter value of each module of S1, initialization processor；
S2, the preset parameter value that each module of RF Signal chip is initialized by processor, initialize and successfully continue to hold
Row next step S3, otherwise re-executes previous step S1；
S3, RF Signal chip operation is configured in the operating mode that can read and write radio-frequency card by processor, be configured to
Work(continues to execute next step S4, otherwise re-executes previous step S2；
S4, processor receive user's transmission read-write and penetrate by the way that the antenna channels for needing to switch, simultaneous processor is calculated
Frequency card command data receive read-write card command and then follow the steps S4-1, S4-2 is thened follow the steps for the read-write card command of receiving；
S4-1, judge that user needs Card Reader or writes card：
Card Reader, the antenna channels number that radio-frequency card is read according to user send rf data information, and no card sends wrong generation
Code information alert user re-executes S4 without card；
Card is write, the antenna channels for the radio-frequency card for needing to be written according to user are numbered, it would be desirable to which the data information of write-in preserves
To corresponding caching, if there is card will write card flag bit one writing, if without card, send error code information, prompt user without
Card, and re-execute S4；
S4-2, processor control multi-channel analog signal switch chip, by the radiofrequency signal timesharing of RF Signal chip
It is switched on the channel of mutiple antennas, simultaneous processor remembers the antenna channels number of current time switching, then passes through processing
Device control RF Signal chip identification user's radio-frequency card whether there is, and recognizes radio-frequency card and continues to execute next step S5, not
Radio-frequency card is recognized, error code information is sent, prompts no radio-frequency card, and re-execute S4；
S5, judge whether user needs to write card, need to write card execution next step S6, card need not be write and execute step S7；
S6, processor control RF Signal chip need user data information write-in radio-frequency card is written, and judge to penetrate
Whether frequency card is write as work(, and radio-frequency card write-in is unsuccessful, then needs to execute next step S7；
S7, the content that radio-frequency card is read by RF Signal chip processed are saved in the caching in respective antenna channel, will write
Card flag bit writes " 0 ", and re-executes S4.
Compared with the existing technology, the beneficial effects of the invention are as follows：Using a RF Signal chip, by RF Signal
The radiofrequency signal of chip is connected on the multi-channel analog signal switching total input and output foot of chip, switches core in multi-channel analog signal
Connect a radio-frequency antenna respectively on branch's input and output foot of piece, by processor timesharing switching radiofrequency signal to each antenna thus
It realizes while reading multiple not in the function of the radio-frequency card of same position.Only need a read-write equipment that can meet the requirements, greatly
The cost of entire radio-frequency recognition system is reduced greatly, and there is good practicability, can generate good economic benefit and society
Benefit.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the passive card seeking reading/writing method flow chart of multiple antennas time-sharing multiplex rf read-write device of the present invention；
Fig. 3 is multiple antennas time-sharing multiplex rf read-write device active card seeking reading/writing method flow chart of the present invention.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 10 | Power supply | 301 | Coding module |
| 20 | Processor | 302 | Decoder module |
| 201 | Data processing module | 303 | Receiving module |
| 202 | Data transmission blocks | 304 | Transmitting module |
| 203 | Data check module | 40 | Multi-channel analog signal switches chip |
| 204 | Analog signal switching control module | 50 | Antenna |
| 30 | RF Signal chip | 60 | Radio-frequency card |
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining relative position relation, motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
A kind of multiple antennas time-sharing multiplex rf read-write device of present invention proposition and its reading/writing method.
Please refer to Fig. 1, the present invention provides multiple antennas time-sharing multiplex rf read-write device, including power supply 10, processor 20, penetrates
Frequency card read-write chip 30, multi-channel analog signal switching chip 40, antenna 50, radio-frequency card 60；The power supply 10 respectively with processing
Device 20, RF Signal chip 30 and multi-channel analog signal switching chip 40 connect, wherein the output end of processor 20 with it is more
Channel analog signal switches chip 40 and connects, and the input terminal of the processor 20 is connect with RF Signal chip 30, and radio-frequency card is read
Chip 30 is write to connect with multi-channel analog signal switching chip 40；The connecting pin of the multi-channel analog signal switching chip 40 is simultaneously
It is associated with mutiple antennas 50, wherein each antenna 50 is connected separately with radio-frequency card 60.
Processor 20, including data processing module 201, data transmission blocks 202, data check module 203 and simulation letter
Number switching control module 204, wherein data processing module 201 connect with data transmission blocks 202 and data correction verification module 203 respectively
It connects, analog signal switching control module 204 is connect with multi-channel analog signal switching chip 40.
RF Signal chip 30, including coding module 301, decoder module 302, receiving module 303 and transmitting module
304, wherein coding module 301 is connect with transmitting module 304, and decoder module 302 is connect with receiving module 303；The reception mould
Block 303 and transmitting module 304 are connect with multi-channel analog signal switching chip 40 respectively.
Coding module 301 and decoder module 302 are connect with processor 20 respectively, and wherein coding module 301 is sent with data
Module 202 connects, and decoder module 302 is connect with data check module 203.
A kind of reading/writing method of multiple antennas time-sharing multiplex rf read-write device, this method include passive card seeking pattern and master
Dynamic card seeking pattern, wherein passive card seeking pattern and active card seeking pattern can be opened and closed alternately.
Passive card seeking pattern, please refers to Fig. 2, includes the following steps：
The preset parameter value of each module of S1, initialization processor；
S2, the preset parameter value that each module of RF Signal chip is initialized by processor, initialize and successfully continue to hold
Row next step S3, otherwise re-executes previous step S1；
S3, RF Signal chip operation is configured in the operating mode that can read and write radio-frequency card by processor, be configured to
Work(continues to execute next step S4, otherwise re-executes previous step S2；
S4, RF Signal chip receive the order data of user writable radio-frequency card, receive the read write command of read-write card after
Continuous to execute next step S5, step S4 need to be re-executed by not receiving read write command；
S5, RF Signal chip obtain user and need to read and write the radio-frequency card in respective antenna channel；
S6, processor need the respective radio-frequency card channel read and write control multi-channel analog signal to switch chip according to user,
The radiofrequency signal of RF Signal chip is switched on the antenna of corresponding channel, RF Signal is then controlled by processor
Chip identification user's radio-frequency card whether there is, and recognizes radio-frequency card and continues to execute next step S7, unidentified to arrive radio-frequency card, send
Error code information prompts no radio-frequency card, and re-executes S4；
S7, judge that user needs Card Reader or writes card, if desired Card Reader then executes next step S8, if desired writes card then
Execute step S9；
S8, Card Reader：Processor control RF Signal chip read radio-frequency card data information, and judge whether read at
Work(is read successfully, sends radio-frequency card data to user；Failure is read, error code information is sent, user's radio-frequency card is prompted to read
Failure；
S9, card is write：Processor controls RF Signal chip and needs the data information inputted that radio-frequency card is written user, and
Judge whether to write card success, write card success, send correct code information, user's radio-frequency card is prompted to write card success；Card crash is write, is sent out
Error code information is sent, user's radio-frequency card is prompted to write card crash.
Active card seeking pattern, please refers to Fig. 3, includes the following steps：
The preset parameter value of each module of S1, initialization processor；
S2, the preset parameter value that each module of RF Signal chip is initialized by processor, initialize and successfully continue to hold
Row next step S3, otherwise re-executes previous step S1；
S3, RF Signal chip operation is configured in the operating mode that can read and write radio-frequency card by processor, be configured to
Work(continues to execute next step S4, otherwise re-executes previous step S2；
S4, processor receive user's transmission read-write and penetrate by the way that the antenna channels for needing to switch, simultaneous processor is calculated
Frequency card command data receive read-write card command and then follow the steps S4-1, S4-2 is thened follow the steps for the read-write card command of receiving；
S4-1, judge that user needs Card Reader or writes card：
Card Reader, the antenna channels number that radio-frequency card is read according to user send rf data information, and no card sends wrong generation
Code information alert user re-executes S4 without card；
Card is write, the antenna channels for the radio-frequency card for needing to be written according to user are numbered, it would be desirable to which the data information of write-in preserves
To corresponding caching, if there is card will write card flag bit one writing, if without card, send error code information, prompt user without
Card, and re-execute S4；
S4-2, processor control multi-channel analog signal switch chip, by the radiofrequency signal timesharing of RF Signal chip
It is switched on the channel of mutiple antennas, simultaneous processor remembers the antenna channels number of current time switching, then passes through processing
Device control RF Signal chip identification user's radio-frequency card whether there is, and recognizes radio-frequency card and continues to execute next step S5, not
Radio-frequency card is recognized, error code information is sent, prompts no radio-frequency card, and re-execute S4；
S5, judge whether user needs to write card, need to write card execution next step S6, card need not be write and execute step S7；
S6, processor control RF Signal chip need user data information write-in radio-frequency card is written, and judge to penetrate
Whether frequency card is write as work(, and radio-frequency card write-in is unsuccessful, then needs to execute next step S7；
S7, the content that radio-frequency card is read by RF Signal chip processed are saved in the caching in respective antenna channel, will write
Card flag bit writes " 0 ", and re-executes S4.
The present invention uses a RF Signal chip, and the radiofrequency signal of RF Signal chip is connected to multichannel analog
Signal switches on the total input and output foot of chip, and one is connect respectively on branch's input and output foot that multi-channel analog signal switches chip
A radio-frequency antenna switches radiofrequency signal to each antenna to realize while read multiple not in same position by processor timesharing
Radio-frequency card function.Only need a read-write equipment can meet the requirements, greatly reduce entire radio-frequency recognition system at
This, has good practicability, can generate good economic benefit and social benefit.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
In the scope of patent protection that other related technical areas are included in the present invention.
Claims (5)
1. multiple antennas time-sharing multiplex rf read-write device, including power supply, processor, RF Signal chip, multichannel analog letter
Number switching chip, antenna, radio-frequency card；It is characterized in that, the power supply respectively with processor, RF Signal chip and multichannel
Analog signal switches chip connection, and the wherein output end of processor is connect with multi-channel analog signal switching chip, the processor
Input terminal connect with RF Signal chip, RF Signal chip and multi-channel analog signal switching chip are connect；It is described
The connecting pin of multi-channel analog signal switching chip is parallel with mutiple antennas, wherein each antenna is connected separately with radio-frequency card.
2. multiple antennas time-sharing multiplex rf read-write device according to claim 1, which is characterized in that the processor, packet
Include data processing module, data transmission blocks, data check module and analog signal switching control module, wherein data processing mould
Block is connect with data transmission blocks and data correction verification module respectively, and analog signal switching control module is cut with multi-channel analog signal
Change chip connection.
3. multiple antennas time-sharing multiplex rf read-write device according to claim 1, which is characterized in that the RF Signal
Chip, including coding module, decoder module, receiving module and transmitting module, wherein coding module are connect with transmitting module, decoding
Module is connect with receiving module；The receiving module and transmitting module are connect with multi-channel analog signal switching chip respectively.
4. multiple antennas time-sharing multiplex rf read-write device according to claim 3, which is characterized in that the coding module and
Decoder module is connect with processor respectively, and wherein coding module is connect with data transmission blocks, decoder module and data check mould
Block connects.
5. a kind of reading/writing method of multiple antennas time-sharing multiplex rf read-write device, which is characterized in that be applied to Claims 1-4
Any one of them multiple antennas time-sharing multiplex rf read-write device, includes the following steps：
Processor configures radio-frequency card and reads the operating mode of chip, and receives the order data of user writable radio-frequency card, obtains and uses
Family needs the radio-frequency card on read/write channel；
Processor controls multi-channel analog signal and switches chip, and the radiofrequency signal of RF Signal chip is switched to corresponding day
Line, wherein RF Signal chip identify the radio-frequency card on the antenna, which judges whether user needs
Card Reader writes card；
Card Reader：Processor controls the data information on RF Signal chip reading user's radio-frequency card, reads successfully, sends radio frequency
Card data are to user；
Write card：Processor controls the data information input radio frequency card that user is needed to write by RF Signal chip, writes card success, hair
Code prompt user's radio-frequency card is sent to write card success.
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| CN201810603388.2A CN108647545A (en) | 2018-06-12 | 2018-06-12 | Multiple antennas time-sharing multiplex rf read-write device and its reading/writing method |
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| CN201810603388.2A CN108647545A (en) | 2018-06-12 | 2018-06-12 | Multiple antennas time-sharing multiplex rf read-write device and its reading/writing method |
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| CN201810603388.2A Pending CN108647545A (en) | 2018-06-12 | 2018-06-12 | Multiple antennas time-sharing multiplex rf read-write device and its reading/writing method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110414288A (en) * | 2019-07-29 | 2019-11-05 | 广州佳都数据服务有限公司 | Read-and-write device, system and reading/writing method |
| CN110516486A (en) * | 2019-09-29 | 2019-11-29 | 湖北美和易思教育科技有限公司 | A kind of wireless timesharing RFID terminal of Internet of Things |
| CN111756390A (en) * | 2020-07-31 | 2020-10-09 | 成都菲斯洛克电子技术有限公司 | Multichannel radio frequency read-write equipment |
| CN113205165A (en) * | 2021-05-06 | 2021-08-03 | 特斯联科技集团有限公司 | Fire-fighting equipment management method and device based on Internet |
| WO2021159242A1 (en) * | 2020-02-10 | 2021-08-19 | 深圳市欢太数字科技有限公司 | Radio frequency card selection method, terminal, radio frequency component, storage medium, and apparatus |
| CN114548133A (en) * | 2022-03-09 | 2022-05-27 | 浙江海康科技有限公司 | Ultrahigh frequency RFID receiving and transmitting integrated and receiving separated multiplexing read-write system and self-adaptive configuration method thereof |
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| CN103324969A (en) * | 2013-07-04 | 2013-09-25 | 厦门信达物联科技有限公司 | RFID (Radio Frequency Identification) reader with multiple antennae working simultaneously, and radio frequency data signal identification method of same |
| CN204229433U (en) * | 2014-11-20 | 2015-03-25 | 深圳市捷通科技有限公司 | A kind of hyperchannel rfid interrogator and RFID recognition system |
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| CN103324969A (en) * | 2013-07-04 | 2013-09-25 | 厦门信达物联科技有限公司 | RFID (Radio Frequency Identification) reader with multiple antennae working simultaneously, and radio frequency data signal identification method of same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110414288A (en) * | 2019-07-29 | 2019-11-05 | 广州佳都数据服务有限公司 | Read-and-write device, system and reading/writing method |
| CN110516486A (en) * | 2019-09-29 | 2019-11-29 | 湖北美和易思教育科技有限公司 | A kind of wireless timesharing RFID terminal of Internet of Things |
| WO2021159242A1 (en) * | 2020-02-10 | 2021-08-19 | 深圳市欢太数字科技有限公司 | Radio frequency card selection method, terminal, radio frequency component, storage medium, and apparatus |
| CN111756390A (en) * | 2020-07-31 | 2020-10-09 | 成都菲斯洛克电子技术有限公司 | Multichannel radio frequency read-write equipment |
| CN113205165A (en) * | 2021-05-06 | 2021-08-03 | 特斯联科技集团有限公司 | Fire-fighting equipment management method and device based on Internet |
| CN114548133A (en) * | 2022-03-09 | 2022-05-27 | 浙江海康科技有限公司 | Ultrahigh frequency RFID receiving and transmitting integrated and receiving separated multiplexing read-write system and self-adaptive configuration method thereof |
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Application publication date: 20181012 |