CN107729784A - Multi-band frequency multi-protocol power adjustable RFID reader and its reading/writing method - Google Patents
Multi-band frequency multi-protocol power adjustable RFID reader and its reading/writing method Download PDFInfo
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- CN107729784A CN107729784A CN201710892186.XA CN201710892186A CN107729784A CN 107729784 A CN107729784 A CN 107729784A CN 201710892186 A CN201710892186 A CN 201710892186A CN 107729784 A CN107729784 A CN 107729784A
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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
- G06K7/10297—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 arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
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Abstract
The present invention relates to a kind of multi-band frequency multi-protocol power adjustable RFID reader and its reading/writing method, including a multi-frequency band radio-frequency antenna, for receiving and dispatching the radiofrequency signal of two and two or more frequency range；One power amplifier module, input filter is carried out to signal and output filters except the signal that sends of amplification radio-frequency module also has, also detection is carried out to the signal of reception during reception signal and subcarrier is modulated, to reduce various interference signals；One radio frequency selecting module, for the different radio-frequency module processing unit of the signal behavior according to input；One multiple protocol radio frequency processing module, dissection process is carried out to radiofrequency signal, carrys out the label of identifying processing multiple standards agreement；One main control module, for controlling power amplifier module and radio frequency selecting module to be operated in manual mode or automatic mode, the signal of above-mentioned radio-frequency module processing unit output is handled, is sent into corresponding data-interface.The present invention can receive and dispatch multiple frequency range and various protocols radiofrequency signal by design.
Description
Technical field
The invention belongs to technical field of RFID, is directed to a kind of RFID reader and its reading/writing method, specifically relates to
And a kind of multi-band frequency multi-protocol power adjustable RFID reader and its reading/writing method.
Background technology
Radio frequency identification（RFID）Technology, it is a kind of non-contact automatic identification technology realized using radio communication.Its profit
Contactless information transmission is realized with the Space Coupling of radiofrequency signal and passes through the purpose that transmitted information reaches identification object.It
By radiofrequency signal automatic identification destination object and related data can be obtained, without manual intervention in identification process, can worked
Identified in various adverse circumstances, while identification and multiple targets available for high-speed moving object, it is swift and convenient to operate.Press
It can be divided into low frequency according to the frequency of work（120KHz~135KHz）, high frequency（13.56MHz）, hyperfrequency（860MHz~960MHz）
And microwave（2.4GHz~5.8GHz）.
The popularization of current network and development degree, rapidly promote the development of all trades and professions, when creating " internet+"
Generation, at the same time neozoic technology of Internet of things also obtain fast development, radio frequency identification（RFID）Technology is for a long time by the world
Various countries are considered as the key of technology of Internet of things development, such as in warehousing management, vehicular traffic management, library book management, commodity pin
Sell, the field such as logistics checking is used widely.The important step that read write line is applied as RFID system, directly determines RFID
The development and popularization of technology.
With radio frequency identification（RFID）Technology application becomes increasingly popular, and product category becomes increasingly abundant.Various RFID label tag works
It is not quite similar as frequency range, the technical standard and agreement of use are also inconsistent.A kind of support wide-band of urgent need and power adjustable simultaneously contain
There is the read write line of various protocols, realize and the electronic tag of different frequency range, various criterion is read out.
Existing RFID reader working band is very narrow, can only support a kind of frequency range of standard, at most comprising two kinds of communications
Agreement, and power not can be set.So the read write line of specific function can only read specific electronic tag, cause to more
Kind tag reader inconvenience., it is necessary to install the read write line of multiple frequency range in the environment of multiple functions is realized, cost increase, can also
There is the problems such as field wiring is complicated difficult, and more equipment setting angles are difficult to adjustment and the electromagnetic interference of multiple antennas.
The content of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of multifrequency that is versatile, safe and reliable, being easy to popularization
Section multi-protocols power adjustable RFID reader.The multi-band frequency multi-protocol power adjustable RFID reader includes：One multi-frequency band radio-frequency
Antenna, to receive and dispatch the radiofrequency signal of two or more different frequency ranges；
One power amplifier module, the signal that multiple protocol radio frequency processing module is sent can be amplified, and input filter is carried out to signal
Filtered with output, while also detection and subcarrier modulation are carried out to the signal of reception during reception signal, to reduce various signals
Interference；
One radio frequency selecting module, different RF processing units can be selected according to the radiofrequency signal of input；
One multiple protocol radio frequency processing module, it includes the RF processing unit of two or more different frequency ranges, to radio frequency
Signal carries out dissection process, to identify multiple standards protocol label；
One main control module, the data that can be exported to multiple protocol radio frequency module carry out decoding conversion, and data are sent into accordingly
Data communication interface.
The further multi-frequency band radio-frequency antenna can at least receive and dispatch two kinds of radiofrequency signals of low frequency and high frequency, the multi-protocols
Radio frequency processing module comprises at least a low frequency processing unit and a high frequency processing unit；
The multi-frequency band radio-frequency antenna can at least receive and dispatch two kinds of radiofrequency signals of low frequency and hyperfrequency, and the multiple protocol radio frequency handles mould
Block comprises at least a low frequency processing unit and a hyperfrequency processing unit；
The multi-frequency band radio-frequency antenna can at least receive and dispatch two kinds of radiofrequency signals of low frequency and microwave, the multiple protocol radio frequency processing module
Including at least a low frequency processing unit and a microwave treatment unit；
The multi-frequency band radio-frequency antenna can at least receive and dispatch two kinds of radiofrequency signals of high frequency and hyperfrequency, and the multiple protocol radio frequency handles mould
Block comprises at least a high frequency processing unit and a hyperfrequency processing unit；
The multi-frequency band radio-frequency antenna can at least receive and dispatch two kinds of radiofrequency signals of high frequency and microwave, the multiple protocol radio frequency processing module
Including at least a high frequency processing unit and a microwave treatment unit；
The multi-frequency band radio-frequency antenna can at least receive and dispatch two kinds of radiofrequency signals of hyperfrequency and microwave, and the multiple protocol radio frequency handles mould
Block comprises at least a hyperfrequency processing unit and a microwave treatment unit；
The multi-frequency band radio-frequency antenna can at least receive and dispatch three kinds of low frequency, high frequency and hyperfrequency radiofrequency signals, the multiple protocol radio frequency
Processing module comprises at least a low frequency processing unit, a high frequency processing unit and a hyperfrequency processing unit；
The multi-frequency band radio-frequency antenna can at least receive and dispatch three kinds of low frequency, high frequency and microwave radiofrequency signals, at the multiple protocol radio frequency
Reason module comprises at least a low frequency processing unit, a high frequency processing unit and a microwave treatment unit；
The multi-frequency band radio-frequency antenna can at least receive and dispatch three kinds of low frequency, hyperfrequency and microwave radiofrequency signals, the multiple protocol radio frequency
Processing module comprises at least a low frequency processing unit, a hyperfrequency processing unit and a microwave treatment unit；
The multi-frequency band radio-frequency antenna can at least receive and dispatch three kinds of high frequency, hyperfrequency and microwave radiofrequency signals, the multiple protocol radio frequency
Processing module comprises at least a high frequency processing unit, a hyperfrequency processing unit and a microwave treatment unit；
Further, the multi-frequency band radio-frequency antenna can at least receive and dispatch four kinds of low frequency, high frequency, hyperfrequency and microwave radiofrequency signals,
The multiple protocol radio frequency processing module comprises at least a low frequency processing unit, a high frequency processing unit, at a hyperfrequency
Manage unit and a microwave treatment unit；
Further, the power amplifier module can at least be operated in automatically and manually both of which, wherein automatic mode, be
System can send the power of signal with automatic adjusument multi-frequency band radio-frequency antenna, and manual mode can be according to keyboard or software merit rating
Any power for setting regulation multi-frequency band radio-frequency antenna to send signal in stepping setting or power bracket；
Further, the radio frequency selecting module can at least be operated in automatically and manually both of which, wherein automatic mode, be
The label of seeking that system can adaptively cycle through different frequency range are instructed, and manual mode can be set according to keyboard or software merit rating
Cycled through in fixed one or more frequency ranges and seek label instruction.
Further, the multiple protocol radio frequency processing module can at least be assisted with two kinds of identifying processing or two or more standards
The label of view.
A kind of reading/writing method of multi-band frequency multi-protocol power adjustable RFID reader, this method include：
S1. each module preset parameter value is initialized；
S2. multiple protocol radio frequency processing module sends default frequency range by multi-frequency band radio-frequency antenna according to predetermined power large and small cycles
Seek label instruction；
S3. judge whether multi-frequency band radio-frequency antenna connects the radiofrequency signal for having successfully received label return, be to continue executing with next step
Rapid S4, otherwise re-execute previous step S2；
S4. radio frequency selecting module judges whether the radiofrequency signal meets the agreement of different frequency range, is, according to met agreement
The different RF processing unit of type selecting, otherwise re-executes step S2；
S5. corresponding RF processing unit is demodulated analyzing and processing to signal；
S6. treated signal is sent into main controller module decoding；
S7. label data is sent into corresponding data communication interface by master controller.
The advantage of the invention is that：Multi-band frequency multi-protocol power adjustable RFID reader provided by the invention can a machine it is more
With, a variety of occasions are adapted to, it is versatile, business unit's hardware device construction and maintenance cost are reduced, improves each field management energy
Power and efficiency, improve flexibility and the portability of RFID system application.
Brief description of the drawings
Technical scheme is described in detail below in conjunction with accompanying drawing, so that the characteristic and advantage of the present invention are more
To be obvious.
Fig. 1 is the multi-band frequency multi-protocol power adjustable RFID reader operation principle block diagram of the present invention；
Fig. 2 is the power amplifier module operation principle block diagram of the present invention；
Fig. 3 is the power amplifier module program flow diagram of the present invention；
Fig. 4 is the bright radio frequency selecting module operation principle block diagram of this hair；
Fig. 5 is the bright radio frequency selecting module program flow diagram of this hair；
Fig. 6 is the multi-band frequency multi-protocol power adjustable RFID reader reading/writing method flow chart of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is section Example of the present invention, and not all embodiment.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made,
Belong to the scope of protection of the invention.Following examples are used to illustrate the present invention, but are not limited to protection scope of the present invention.
As shown in figure 1, the operation principle of the present invention is as follows:
The multi-band frequency multi-protocol power adjustable RFID reader of the present invention, multi-frequency band radio-frequency antenna 20 can receive and dispatch penetrating for different frequency range
Frequency signal, the radiofrequency signal that multiple protocol radio frequency processing module 50 is sent deliver to power amplifier module 30, the radio frequency letter by amplification
Number gone out by multiband aerial to space radiation, when there is label 10 to enter in the radiation scope of multi-frequency band radio-frequency antenna, mark
Sign internal antenna and produce induced-current, be activated so as to which label obtains energy, and itself nonvolatile memory is sent to read write line
In proprietary data information.Now, after multi-frequency band radio-frequency antenna 20 receives the carrier signal that label is sent, by radio frequency selecting module
40, according to the frequency of the signal, deliver to multiple protocol radio frequency processing module 30 and are demodulated processing.Furthermore the signal will be sent to master
Control module 60 is decoded, and decoded data are transmitted to corresponding data communication interface 70 and display by main control module 60
Interface 80.Wherein, data communication interface includes Ethernet interfaces, RS232 interface, RS485 interfaces, USB interface, CAN interface
Various Deng, data communication interface species is even more known technology, and the description in the present invention is to illustrate the present invention in order to clearer, and
The present invention is not limited.
Embodiment 1
Referring to Fig. 2, in power amplifier module, radio-frequency module is responsible for launching and receives each RF processing unit base band by processing
Data-signal, power amplification circuit will also carry out input filter and output except the signal that sends of amplification radio-frequency module to signal
Filtering, also input filter is carried out to signal during reception signal and output filters, also the signal of reception entered during reception signal
Row detection and subcarrier modulation, to reduce various interference signals.The method of automatic power adjustment in the present invention, transmission signal is through work(
After putting row power amplification into, by directional couple wave detector, the sub-fraction for inputting transmission power is coupled, remaining most of work(
Rate is through antenna to space radiation.This fraction radiofrequency signal of oriented coupler coupling by wave detector and carries out detection, defeated
Going out a voltage signal, the voltage signal has reacted the size of the fraction signal energy, and what it is due to coupling is very small part,
And the radio frequency energy of coupling and the energy of input radio frequency signal are proportional, so this voltage signal has equally reacted defeated
Go out the watt level of signal, this voltage signal is carried out into processing to corresponding BBP after A/D is changed to learn
The now watt level of transmission signal.Then after analyzing and processing, then changed by D/A and produce a voltage control signal to control
Power amplifier processed reaches the purpose for automatically controlling power to adjust the size of power amplifier power output.
Equally, when manual control, as long as control D/A conversions produce a voltage corresponding with being manually entered multiplication factor
Signal.
The flow of power amplifier module work enters power adjustable mould referring to Fig. 3, first initialization module parameter after success
Block set automatically adjusts or manually regulation, manually regulation need set multiplication factor, it is to preset to first enter into, behind journey
It is regulation multiplication factor that sequence, which is transferred to, and automatically adjustable is time for being sent and received according to environmental condition difference data success and failure
Reconciled in number difference and lower multiplication factor；According to the difference of environmental condition, some specific multiplication factor can be transferred to manually, afterwards
Label is determined whether in read range, if then establishing connection and carrying out anti-collision mechanism, enters the read-write behaviour of row label
Make；If without label in read range, need to adjust the multiplication factor of power, and retry setting number and determine whether
Label, if having reached setting number, return and confirm connection failure.
Embodiment 2
Referring to Fig. 4, when multiband works, radio frequency selecting module, which can be operated in, to be automatically selected and manual selection modes, is operated in
During automatic mode, the radiofrequency signal that radio frequency selecting module is coupled to receive according to multi-frequency band radio-frequency antenna is selected at suitable radio frequency
Unit is managed, is then demodulated by the BBP in RF processing unit, main control module is delivered to and carries out Decoding Analysis;
When being operated in manual mode, the radiofrequency signal selection that radio frequency selecting module is coupled to receive according to multi-frequency band radio-frequency antenna is set manually
RF processing unit corresponding to frequency range is put, is then demodulated by the BBP in RF processing unit, delivers to master control
Molding block carries out Decoding Analysis.
Fig. 5 is program circuit of the present invention in multiband work, first initialization module parameter, judge module after success
Mode of operation, it is determined that being automatic mode or manual mode.If if automatic mode, the system when being often in a frequency range
The program of power adjustable module will be called, continues to call power adjustable modular program after automatic switchover frequency range.If hand
If dynamic model formula, power adjustable modular program is only called in a frequency range.So can is accomplished, multiband power can
Making overall plans and coordinate for automatic seeking label is adjusted, the method for realization is only explained here, any restrictions are not done to the present invention.
Embodiment 3
The reading/writing method of the multi-band frequency multi-protocol power adjustable RFID reader of the present invention, referring to Fig. 6, including following step
Suddenly：
S1. each module preset parameter value is initialized, including mode of operation parameter, the power amplification multiple ginseng adjusted to power
Number is default with radio frequency selecting module mode of operation parameter etc.；
S2. multiple protocol radio frequency processing module sends default frequency range by multi-frequency band radio-frequency antenna according to predetermined power large and small cycles
Label instruction is sought, this is sought label instruction and sent by multi-frequency band radio-frequency antenna 20；
S3. judge whether multi-frequency band radio-frequency antenna connects the radiofrequency signal for having successfully received label return, be to continue executing with next step
Rapid S4, otherwise re-execute previous step S2；
S4. radio frequency selecting module 40 judges whether the radiofrequency signal meets the agreement of different frequency range, is, according to met agreement
The different RF processing unit of type selecting, otherwise re-execute step S2；
S5. corresponding RF processing unit is demodulated analyzing and processing to signal；
S6. treated signal is sent into main control module 60 and decoded；
S7. label data is sent into corresponding data communication interface 70 and display interface 80 by main control module 60, shown or
Person is transmitted.
Above describe general principle, principal character and the present invention of the present invention a little.The present invention is not by above-mentioned reality
The limitation of example is applied, any those skilled in the art, without departing from the spirit and scope of the present invention, can make various changes with repairing
Change, therefore protection scope of the present invention should be defined by claim limited range.
Claims (10)
- A kind of 1. multi-band frequency multi-protocol power adjustable RFID reader, it is characterised in that：Including multi-frequency band radio-frequency antenna, to receive Send out the radiofrequency signal of two or more different frequency ranges；Power amplifier module, it can automatically and manually adjust power amplification times Number, improve emission of radio frequency signals and reception；Radio frequency selecting module, to select different radio frequencies according to the radiofrequency signal of input Processing unit；Multiple protocol radio frequency processing module, it includes the RF processing unit of two or more different frequency ranges, to right Radiofrequency signal is pre-processed, and can recognize that the label of multiple standards agreement；Main control module, above-mentioned RF processing unit can be sent The signal gone out is decoded, and by decoded data transfer to corresponding data communication interface and display interface；Data communicate Interface, the data conversion received into the electric signal of different agreement and is transmitted；Display, keyboard interface, external can show Show equipment and input equipment, facility is provided for man-machine interaction.
- 2. multi-band frequency multi-protocol power adjustable RFID reader as claimed in claim 1, it is characterised in that：The multiband is penetrated Frequency antenna can at least receive and dispatch two kinds of radiofrequency signals of low frequency and high frequency, and the multiple protocol radio frequency processing module comprises at least a low frequency Processing unit and a high frequency processing unit.
- 3. multi-band frequency multi-protocol power adjustable RFID reader as claimed in claim 1, it is characterised in that：The multiband is penetrated Frequency antenna can at least receive and dispatch two kinds of radiofrequency signals of low frequency and hyperfrequency, and the multiple protocol radio frequency processing module is low including at least one Frequency processing unit and a hyperfrequency processing unit.
- 4. multi-band frequency multi-protocol power adjustable RFID reader as claimed in claim 1, it is characterised in that：The multiband is penetrated Frequency antenna can at least receive and dispatch two kinds of radiofrequency signals of low frequency and microwave, and the multiple protocol radio frequency processing module comprises at least a low frequency Processing unit and a microwave treatment unit.
- 5. multi-band frequency multi-protocol power adjustable RFID reader as claimed in claim 1, it is characterised in that：The multiband is penetrated Frequency antenna can at least receive and dispatch two kinds of radiofrequency signals of high frequency and hyperfrequency, and the multiple protocol radio frequency processing module comprises at least a height Frequency processing unit and a hyperfrequency processing unit.
- 6. multi-band frequency multi-protocol power adjustable RFID reader as claimed in claim 1, it is characterised in that：The multiband is penetrated Frequency antenna can at least receive and dispatch two kinds of radiofrequency signals of high frequency and microwave, and the multiple protocol radio frequency processing module comprises at least a high frequency Processing unit and a microwave treatment unit.
- 7. the multi-band frequency multi-protocol power adjustable RFID reader as described in claim 1,2,3 and 5 any one, its feature exist In：The multi-frequency band radio-frequency antenna can at least receive and dispatch three kinds of low frequency, high frequency and hyperfrequency radiofrequency signals, at the multiple protocol radio frequency Reason module comprises at least a low frequency processing unit, a high frequency processing unit and a hyperfrequency processing unit.
- 8. the multi-band frequency multi-protocol power adjustable RFID reader as described in claim 1,2,4 and 6 any one, its feature exist In：The multi-frequency band radio-frequency antenna can at least receive and dispatch three kinds of low frequency, high frequency and microwave radiofrequency signals, the multiple protocol radio frequency processing Module comprises at least a low frequency processing unit, a high frequency processing unit and a microwave treatment unit.
- 9. the multi-band frequency multi-protocol power adjustable RFID reader as described in claim 1,3,4 and 6 any one, its feature exist In：The multi-frequency band radio-frequency antenna can at least receive and dispatch three kinds of low frequency, hyperfrequency and microwave radiofrequency signals, at the multiple protocol radio frequency Reason module comprises at least a low frequency processing unit, a hyperfrequency processing unit and a microwave treatment unit.
- 10. the multi-band frequency multi-protocol power adjustable RFID reader as described in claim 1,5,6 and 7 any one, its feature exist In：The multi-frequency band radio-frequency antenna can at least receive and dispatch three kinds of high frequency, hyperfrequency and microwave radiofrequency signals, at the multiple protocol radio frequency Reason module comprises at least a high frequency processing unit, a hyperfrequency processing unit and a microwave treatment unit.
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Cited By (13)
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| CN110263592A (en) * | 2019-06-21 | 2019-09-20 | 中国神华能源股份有限公司 | Rolling stock information readout device, method and rolling stock detection system, method |
| CN110276222A (en) * | 2018-03-13 | 2019-09-24 | 长春师范大学 | A radio frequency identification antenna device |
| CN110929534A (en) * | 2019-08-27 | 2020-03-27 | 北京万物纵横科技有限公司 | Dual-mode multi-ID active label inventory system |
| CN111459086A (en) * | 2020-03-30 | 2020-07-28 | 深圳市科楠科技开发有限公司 | System and method for realizing scaler control and data processing |
| CN111488745A (en) * | 2019-01-25 | 2020-08-04 | 深圳市艾特智能科技有限公司 | Read-write system, radio frequency signal processing method, readable storage medium and card reading device |
| CN111611816A (en) * | 2019-02-22 | 2020-09-01 | 立象科技股份有限公司 | Radio frequency identification reading device and power setting method thereof |
| CN111988066A (en) * | 2020-09-11 | 2020-11-24 | 南京陆加壹智能科技有限公司 | A UHF RFID discrete component read and write module |
| CN112055321A (en) * | 2020-09-21 | 2020-12-08 | 移康智能科技（上海）股份有限公司 | Multi-band integrated communication system |
| CN113765534A (en) * | 2021-07-26 | 2021-12-07 | 上海闻泰信息技术有限公司 | Radio frequency module, electronic equipment, control method and storage medium |
| CN114595792A (en) * | 2022-05-10 | 2022-06-07 | 深圳市国芯物联科技有限公司 | UHFRFID reader-writer channel selection filter supporting double protocols |
| CN115801060A (en) * | 2021-09-10 | 2023-03-14 | 西克股份公司 | Communicating with RFID transponders |
| CN118095325A (en) * | 2024-04-23 | 2024-05-28 | 青岛儒海船舶工程有限公司 | High concurrency RFID read-write system and device suitable for cold chain logistics |
| CN119402041A (en) * | 2024-12-30 | 2025-02-07 | 浙江大学 | A wide-band RFID communication device with a custom protocol |
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Application publication date: 20180223 |