CN206805554U - A kind of frequency adjustable multi-protocols RFID reader automatically - Google Patents
A kind of frequency adjustable multi-protocols RFID reader automatically Download PDFInfo
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- CN206805554U CN206805554U CN201720589433.4U CN201720589433U CN206805554U CN 206805554 U CN206805554 U CN 206805554U CN 201720589433 U CN201720589433 U CN 201720589433U CN 206805554 U CN206805554 U CN 206805554U
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Abstract
The utility model discloses a kind of frequency adjustable multi-protocols RFID reader automatically, including Information Control Service reason unit, radio frequency control unit and antenna element, described information control process unit includes information processor module, LCD MODULE, coding module, decoder module and communication interface modules, LCD MODULE and the connection of the output end of coding module and information processor module；The input of decoder module and information processor module connects；Information processor module is connected by communication interface modules with external equipment；The communication interface modules includes USB interface, WiFi module and RS232 interface；The radio frequency control unit includes RF receiving and transmission module and net mate circuit；RF receiving and transmission module is connected with coding module and decoder module respectively by SPI interface；And it is connected by net mate circuit with antenna element.The characteristics of the utility model is adaptable strong, and cost is low, bring convenient for the application of frequency read/write, and the development to read write line serves impetus.
Description
Technical field
The utility model belongs to electronic information technical field, and in particular to a kind of frequency adjustable multi-protocols RFID read-write automatically
Device.
Background technology
Radio frequency identification（RFID）Technology is that a kind of realized with radio communication carries out contactless automatic identification to article to be identified
Technology.The technology is since 19 end of the centurys, by common concern both domestic and external, development speed quickly, as Internet of Things
One of key technology, have broad application prospects.With becoming increasingly popular for RFID technique application, product category becomes increasingly abundant.
Various RFID label tag working frequency range are not quite similar, and the technical standard of use is also inconsistent.And traditional RFID reader working band
It is very narrow and at most contain two kinds of communication protocols, cause the inconvenience to tag reader.
Utility model content
To be solved in the utility model is that existing RFID reader working frequency is narrower, and the less technology of supported protocol is asked
Topic, so as to provide a kind of frequency adjustable multi-protocols RFID reader automatically.
In order to solve the above technical problems, technical scheme is as follows used by the utility model：A kind of frequency is automatic adjustable more
Agreement RFID reader, including Information Control Service reason unit, radio frequency control unit and antenna element, described information control process list
Member includes information processor module, LCD MODULE, coding module, decoder module and communication interface modules, liquid crystal display mode
The output end of block and coding module and information processor module connects；The input of decoder module and information processor module connects
Connect；Information processor module is connected by communication interface modules with external equipment；The communication interface modules include USB interface,
WiFi module and RS232 interface；The radio frequency control unit includes RF receiving and transmission module and net mate circuit；Radio-frequency receiving-transmitting mould
Block is connected with coding module and decoder module respectively by SPI interface；And it is connected by net mate circuit with antenna element.
The net mate circuit includes the first electric capacity C131, the first inductance L131, the second electric capacity C121 and the second inductance
L121, the first electric capacity C131 one end ground connection, one end of the other end and the first inductance L131 are connected in series, and the first electric capacity C131
And first be provided with input between inductance L131；The first inductance L131 other end is connected with the second electric capacity C121 one end,
The second electric capacity C121 other end is connected with the second inductance L121 one end, and between the second inductance L121 and the second electric capacity C121
It is provided with output end；The second inductance L121 other end is connected with the 3rd electric capacity C124 one end, and the 3rd electric capacity C124's is another
End ground connection；3rd inductance L122 one end is connected between the first inductance L131 and the second electric capacity C121, the 3rd inductance L122's
The other end is connected with the 4th electric capacity C122 one end and the 4th inductance L123 one end respectively, the 4th electric capacity C122 other end
Ground connection, the 4th inductance L123 other end are connected with the 5th electric capacity C123 one end and the 6th electric capacity C125 one end respectively, the
Five electric capacity C123 another termination ground connection, the 6th electric capacity C125 other end are connected with antenna.
First electric capacity C131 and the second electric capacity C121 capacitance are equal；First inductance L131 and the second inductance L121 electricity
Inductance value is equal.
The model STM32F103VET6 of described information processor module.
The model MG-12864 of the LCD MODULE；The model EM380 radio communication molds of the WiFi module
Block.
The model CC1101 registers of the RF receiving and transmission module.Three frequency ranges are prestored in register, are respectively
300-348MHz, 387-464MHz and 779-928MHz, under the control action of information processor module, read write line work can be achieved
Make the adjust automatically of frequency range.
The utility model is transmitted to information by communication interface modules and label communication, and by the label signal received
Manage in device module, information processor module is transmitted to CC1101 registers after being encoded by coding module by SPI interface, is led to
The modulation circuit crossed inside register is modulated, and the signal after modulation is sent to day after net mate circuit is filtered
Line, it will modulate filtered radio frequency electromagnetic RF1 through antenna and launch, after label receives the RF1 signals from read write line
It is activated, the order to read write line is made a response, and the self information of storage is modulated into RF2 reflexes to antenna, and antenna receives letter
Transmit after number to net mate circuit and transmitted after being filtered from output end to CC1101 registers, inside register
Demodulator circuit is demodulated, and the signal after demodulation is after SPI interface is uploaded to decoder module decoding, then is output to message handler
In module, and then external equipment is uploaded to by communication interface modules, and shown in LCD MODULE, is greatly improved
The level of IT application of read write line.The characteristics of the utility model is adaptable strong, and cost is low, brings for the application of frequency read/write
It is convenient, and the development to read write line serves impetus.
Brief description of the drawings
Fig. 1 is control principle block diagram of the present utility model.
Fig. 2 is the structural representation of the utility model radio frequency control unit.
Fig. 3 is the circuit diagram of the utility model net mate circuit.
Embodiment
As Figure 1-3, a kind of frequency adjustable multi-protocols RFID reader automatically, including Information Control Service reason unit, penetrate
Frequency control unit and antenna element, antenna element can be substantially reduced the size of Anneta module using wire antenna is bent.
Described information control process unit includes information processor module, LCD MODULE, coding module, decoder module
And the output end of communication interface modules, LCD MODULE and coding module and information processor module connection；Decoder module with
The input connection of information processor module；Information processor module is connected by communication interface modules with external equipment；It is described
Communication interface modules includes USB interface, WiFi module and RS232 interface.The radio frequency control unit includes RF receiving and transmission module
With net mate circuit；RF receiving and transmission module is connected with coding module and decoder module respectively by SPI interface；And pass through network
Match circuit is connected with antenna element.
The net mate circuit includes the first electric capacity C131, the first inductance L131, the second electric capacity C121 and the second inductance
L121, the first electric capacity C131 and the second electric capacity C121 capacitance are equal；First inductance L131 and the second inductance L121 inductance
It is worth equal.First electric capacity C131 one end ground connection, one end of the other end and the first inductance L131 are connected in series, and the first electric capacity
Input is provided between C131 and the first inductance L131；The first inductance L131 other end and the second electric capacity C121 one end connect
Connect, the second electric capacity C121 other end is connected with the second inductance L121 one end, and the second inductance L121 and the second electric capacity C121
Between be provided with output end；The second inductance L121 other end is connected with the 3rd electric capacity C124 one end, the 3rd electric capacity C124's
The other end is grounded；3rd electric capacity C124 is the DC Module electric capacity of balanced to unbalanced transformer.
First electric capacity C131, the first inductance L131, the second electric capacity C121 and the second inductance L121, have collectively constituted one bar
Human relations balanced to unbalanced transformer, the L-C baluns balanced to unbalanced transformer do not only have the function that differential signal and single-ended signal mutually convert, also have into
The effect of row impedance transformation.
3rd inductance L122 one end is connected between the first inductance L131 and the second electric capacity C121, the 3rd inductance L122's
The other end is connected with the 4th electric capacity C122 one end and the 4th inductance L123 one end respectively, the 4th electric capacity C122 other end
Ground connection, the 4th inductance L123 other end are connected with the 5th electric capacity C123 one end and the 6th electric capacity C125 one end respectively, the
Five electric capacity C123 another termination ground connection, the 6th electric capacity C125 other end are connected with antenna.The electricity of 3rd inductance L122 and the 4th
Hold C122 and form a L-type circuit, the 4th inductance L123 and the 5th electric capacity C123 constitute another L-type circuit, the two L-types
Circuit is capable of realizing impedance matching and filters.6th electric capacity C125 is filtering DC Module added when having DC channel in antennas
Electric capacity.
In the present embodiment, the model STM32F103VET6 of described information processor module.The LCD MODULE
Model MG-12864；The model EM380 wireless communication modules of the WiFi module.The model of the RF receiving and transmission module
For CC1101 registers.Three frequency ranges, respectively 300-348MHz, 387-464MHz and 779- are prestored in register
928MHz, under the control action of information processor module, the adjust automatically of read write line working frequency range can be achieved.
The present invention realizes signal frequency modulation, described net in RF receiving and transmission module, by adjusting the configuration of its internal register
The frequency range difference that network match circuit is supported with read write line is respectively configured, and configures automatic frequency adjustment control circuit, LCD MODULE
It can show the state of read write line itself and the information of label that read write line is read, include USB interface and RS232 interface and meter
Calculation machine is connected, and uses computer processing data；Using Wi-Fi module read write line can be made to be wirelessly connected to equipment farther out, will read
The label information got is sent to distal end.
The RF receiving and transmission module of radio frequency control unit has receiving channel control and sendaisle to control two parts.Sendaisle
In have modulation circuit and power amplification circuit, it will go in the signal modulation for being sent to electronic tag to read write line CF signal, shape
Into brewed transmission signal, launch through reading and writing device antenna.Receiving channel contains demodulator circuit, and it returns to electronic tag
The echo-signal demodulation of read write line, extracts the signal of electronic tag transmission, and electronic tag signal is amplified.
In the utility model, the purpose of coding is the command code that sends read write line for ease of being modulated to radio-frequency carrier
On modulation signals.The purpose of decoding is that the label backhaul signals Jing Guo RF receiving and transmission module demodulation process are decoded
Deng processing, result is then sent to information processor module.Information processor module can realize following multiple functions：To read write line
And the identity of electronic tag is verified, controls communication process between read write line and label, to being passed between read write line and label
The data sent are encrypted and decrypted, realize interface specification between backend applications, perform anti-collision algorithm to realize
Multi-tag identifies simultaneously.Information processor module is connected with LCD MODULE so as to show read write line state and read label
Information.Information processor module is connected by communication interface modules with other equipment, big so as to the upload deposit of label information
Database and taken orders from application system.
Antenna element is the important component of read write line, and antenna is in the front end of read write line, with RF receiving and transmission module
Connected by net mate circuit.
The utility model is transmitted to information by communication interface modules and label communication, and by the label signal received
Manage in device module, information processor module is transmitted to CC1101 registers after being encoded by coding module by SPI interface, is led to
The modulation circuit crossed inside register is modulated, and the signal after modulation is sent to day after net mate circuit is filtered
Line, it will modulate filtered radio frequency electromagnetic RF1 through antenna and launch, after label receives the RF1 signals from read write line
It is activated, the order to read write line is made a response, and the self information of storage is modulated into RF2 reflexes to antenna, and antenna receives letter
Transmit after number to net mate circuit and transmitted after being filtered from output end to CC1101 registers, inside register
Demodulator circuit is demodulated, and the signal after demodulation is after SPI interface is uploaded to decoder module decoding, then is output to message handler
In module, and then external equipment is uploaded to by communication interface modules, and shown in LCD MODULE, it is described above,
Preferable embodiment only of the invention, but protection scope of the present invention is not limited thereto, it is any to be familiar with this technology neck
The technical staff in domain the invention discloses technical scope in, the change or replacement that can readily occur in should all be covered in the present invention
Protection domain within.
Claims (5)
- A kind of 1. frequency adjustable multi-protocols RFID reader automatically, it is characterised in that：Including Information Control Service reason unit, radio frequency control Unit and antenna element processed, described information control process unit include information processor module, LCD MODULE, coding mould The output end of block, decoder module and communication interface modules, LCD MODULE and coding module and information processor module connects； The input of decoder module and information processor module connects；Information processor module passes through communication interface modules and external equipment Connection；The communication interface modules includes USB interface, WiFi module and RS232 interface；The radio frequency control unit includes radio frequency Transceiver module and net mate circuit；RF receiving and transmission module is connected with coding module and decoder module respectively by SPI interface；And It is connected by net mate circuit with antenna element；The net mate circuit include the first electric capacity C131, the first inductance L131, One end of second electric capacity C121 and the second inductance L121, the first electric capacity C131 one end ground connection, the other end and the first inductance L131 It is connected in series, and input is provided between the first electric capacity C131 and the first inductance L131；The first inductance L131 other end with Second electric capacity C121 one end connection, the second electric capacity C121 other end are connected with the second inductance L121 one end, and the second electricity Output end is provided between sense L121 and the second electric capacity C121；The second inductance L121 other end and the 3rd electric capacity C124 one end Connection, the 3rd electric capacity C124 other end ground connection；3rd inductance L122 one end is connected to the first inductance L131 and the second electric capacity Between C121, the 3rd inductance L122 other end connects with the 4th electric capacity C122 one end and the 4th inductance L123 one end respectively Connect, the 4th electric capacity C122 other end ground connection, the 4th inductance L123 other end respectively with the 5th electric capacity C123 one end and 6th electric capacity C125 one end connection, the 5th electric capacity C123 another termination ground connection, the 6th electric capacity the C125 other end and antenna Connection.
- A kind of 2. frequency according to claim 1 adjustable multi-protocols RFID reader automatically, it is characterised in that：First electric capacity C131 and the second electric capacity C121 capacitance are equal；First inductance L131 and the second inductance L121 inductance value are equal.
- A kind of 3. frequency according to claim 1 adjustable multi-protocols RFID reader automatically, it is characterised in that：Described information The model STM32F103VET6 of processor module.
- A kind of 4. frequency according to claim 1 adjustable multi-protocols RFID reader automatically, it is characterised in that：The liquid crystal The model MG-12864 of display module；The model EM380 wireless communication modules of the WiFi module.
- A kind of 5. frequency according to claim 1 adjustable multi-protocols RFID reader automatically, it is characterised in that：The radio frequency The model CC1101 registers of transceiver module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720589433.4U CN206805554U (en) | 2017-05-25 | 2017-05-25 | A kind of frequency adjustable multi-protocols RFID reader automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720589433.4U CN206805554U (en) | 2017-05-25 | 2017-05-25 | A kind of frequency adjustable multi-protocols RFID reader automatically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206805554U true CN206805554U (en) | 2017-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720589433.4U Expired - Fee Related CN206805554U (en) | 2017-05-25 | 2017-05-25 | A kind of frequency adjustable multi-protocols RFID reader automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206805554U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555777A (en) * | 2020-04-23 | 2020-08-18 | 飞天诚信科技股份有限公司 | Frequency-adjustable coupling communication equipment |
| CN112465084A (en) * | 2020-11-25 | 2021-03-09 | 广州智慧城市发展研究院 | Verification system for reader-writer |
-
2017
- 2017-05-25 CN CN201720589433.4U patent/CN206805554U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555777A (en) * | 2020-04-23 | 2020-08-18 | 飞天诚信科技股份有限公司 | Frequency-adjustable coupling communication equipment |
| CN111555777B (en) * | 2020-04-23 | 2021-12-28 | 飞天诚信科技股份有限公司 | Frequency-adjustable coupling communication equipment |
| CN112465084A (en) * | 2020-11-25 | 2021-03-09 | 广州智慧城市发展研究院 | Verification system for reader-writer |
| CN112465084B (en) * | 2020-11-25 | 2024-03-01 | 广州智慧城市发展研究院 | Verification system for reader-writer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 451191 No. 1 Huaihe Road, Shuang Hu Economic and Technological Development Zone, Xinzheng, Zhengzhou, Henan Patentee after: Zhongyuan University of Technology Address before: 451191 No. 1 Huaihe Road, Shuanghu Town Economic and Technological Development Zone, Zhengzhou City, Henan Province Patentee before: Zhongyuan University of Technology |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20200525 |