CN107977690A - A kind of RFID card senders - Google Patents
A kind of RFID card senders Download PDFInfo
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- CN107977690A CN107977690A CN201711453191.7A CN201711453191A CN107977690A CN 107977690 A CN107977690 A CN 107977690A CN 201711453191 A CN201711453191 A CN 201711453191A CN 107977690 A CN107977690 A CN 107977690A
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- 238000004891 communication Methods 0.000 claims abstract description 29
- 238000012546 transfer Methods 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 230000001052 transient effect Effects 0.000 claims description 106
- 230000001629 suppression Effects 0.000 claims description 91
- 238000007726 management method Methods 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 230000008054 signal transmission Effects 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 230000003321 amplification Effects 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K13/00—Conveying record carriers from one station to another, e.g. from stack to punching mechanism
- G06K13/02—Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier having longitudinal dimension comparable with transverse dimension, e.g. punched card
- G06K13/08—Feeding or discharging cards
Abstract
The invention discloses a kind of RFID card senders, it is related to field of radio frequency identification, which is provided with baseband module, radio-frequency module and antenna, and wherein baseband module includes：Main control module, power management module, Communication protection module, the interference signal that power management module is used in the voltage to power supply output is protected, and the power supply after protection is exported to main control module and radio-frequency module, the interference signal that Communication protection module is used in the data to host computer input is protected, and by the data transfer after protection to main control module, since the power management module in baseband module and Communication protection module can carry out protective treatment to the interference signal in the external equipments such as power supply and host computer, interference is brought to card sender when can input card sender to avoid interference signal, so that the data transfer in card sender is more stable and accurate.
Description
Technical field
The present invention relates to field of radio frequency identification, more particularly to a kind of RFID card senders.
Background technology
Radio frequency identification (Radio Frequency Identification, RFID) technology is a kind of contactless automatic
Identification technology, its basic functional principle are using the radiofrequency signal of card sender transmitting, and electronics is activated by way of Space Coupling
Self-contained data are returned to hair fastener by label, electronic tag by specific mode again by the mode of Space Coupling
Device, realizes the automatic identification of electronic tag.
Since RFID technique has the advantages that remote identification, batch identification, mobile identification, data encryption, so handing over
The fields such as logical, military and civilian have obtained extensive utilization.In practice, people are usually needed in various complex environments
Using RFID card senders, when RFID card senders are connected with host computer when external equipment, or during access power supply, set from outside
Standby or power supply interference signal can bring RFID card senders interference.
The content of the invention
It is a primary object of the present invention to provide a kind of RFID card senders, it is intended to solve in the prior art when RFID card senders
With host computer when external equipment is connected, the interference signal from external equipment or power supply can be right when either accessing power supply
RFID card senders normal work produces the technical problem of interference.
To achieve the above object, the present invention provides a kind of RFID card senders, which includes：Baseband module, radio frequency mould
Block and antenna；
With the baseband module with being connected, the other end is connected with the antenna for described radio-frequency module one end；
The baseband module includes：Main control module, power management module and Communication protection module；
Described power management module one end is connected with power supply, and the other end connects with the main control module and the radio-frequency module
Connect；
Described Communication protection module one end is connected with host computer, and the other end is connected with the main control module；
The interference signal that the power management module is used in the voltage signal to power supply output is protected, and will
Voltage signal after protection is exported to the main control module and the radio-frequency module；
The interference signal that the Communication protection module is used in the data to host computer output is protected, and will be anti-
Data transfer after shield is to the main control module；
The main control module is used to send data to the radio-frequency module, and receives the radio-frequency module according to data
The data-signal fed back
The present invention provides a kind of RFID card senders, is provided with baseband module, radio-frequency module and antenna, wherein baseband module
Including：Main control module, power management module, Communication protection module, power management module are used in the voltage to power supply output
Interference signal is protected, and the power supply after protection is exported to main control module and radio-frequency module, Communication protection module and is used for
Interference signal in the data of host computer input is protected, and by the data transfer after protection to main control module, due to base
The interference in the external equipments such as power supply and host computer can be believed with mould power management module in the block and Communication protection module
Number carry out protective treatment, can to avoid interference signal input card sender when interference is brought to card sender so that the number in card sender
More stablize according to transmission and accurate.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those skilled in the art, without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structure diagram of RFID card senders provided in an embodiment of the present invention；
Fig. 2 is a kind of structure diagram of the baseband module of RFID card senders provided in an embodiment of the present invention；
Fig. 3 is a kind of circuit diagram of the EMI protection filter circuit of RFID card senders provided in an embodiment of the present invention；
Fig. 4 is that a kind of USB interface of RFID card senders provided in an embodiment of the present invention protects the circuit diagram of circuit；
Fig. 5 is that a kind of network interface of RFID card senders provided in an embodiment of the present invention protects the circuit diagram of circuit；
Fig. 6 is a kind of structure diagram of the baseband module of RFID card senders provided in an embodiment of the present invention；
Fig. 7 is a kind of structure diagram of the radio-frequency module of RFID card senders provided in an embodiment of the present invention.
Embodiment
Goal of the invention, feature, advantage to enable the present invention is more obvious and understandable, below in conjunction with the present invention
Attached drawing in embodiment, is clearly and completely described the technical solution in the embodiment of the present invention, it is clear that described reality
It is only part of the embodiment of the present invention to apply example, and not all embodiments.Based on the embodiments of the present invention, people in the art
Member's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
Referring to Fig. 1, it is a kind of structure diagram of RFID card senders provided in an embodiment of the present invention.
As shown in Figure 1, the card sender includes：Baseband module 1, radio-frequency module 2 and antenna 2.
2 one end of radio-frequency module is connected with baseband module 1, and the other end is connected with antenna 3.
1 piece of base band mould includes：Main control module 11, power management module 12 and Communication protection module.
12 one end of power management module is connected with power supply, and the other end is connected with main control module 11 and radio-frequency module 2.
Communication protection module one end is connected with host computer, and the other end is connected with main control module 11.
Power management module 12 is used to protect the interference signal exported in power supply, and the power supply after protection is exported
To main control module 11 and radio-frequency module 2.
The interference signal that Communication protection module is used in the data to host computer input is protected, and by the number after protection
According to being transmitted to main control module 11.
Main control module 11 is used to send data to radio-frequency module 2, and receives radio-frequency module 2 and returned according to data feedback
Data-signal.
Further, referring to Fig. 2, Fig. 2 is a kind of baseband module of RFID card senders provided in an embodiment of the present invention
Structure diagram.
As shown in Fig. 2, power management module 12 includes：Power interface 121, electromagnetic interference (Electromagnetic
Interference, EMI) protect filter circuit 122 and voltage conversion circuit 123.
121 one end of power interface is connected with external power supply, and the other end is connected with one end that EMI protection filtering 122 is connected,
The other end of EMI protection filter circuit 122 is connected with one end of voltage conversion circuit 123, voltage conversion circuit 1123 it is another
End is connected with main control module 11.
Further, power interface 121 is used to receive externally input power supply, and power supply is delivered to EMI protection filtering
Circuit 122, EMI protection filter circuit 122 is used to protect the interference signal in the voltage of power supply output and filtering, and will be anti-
Shield and the voltage of filtering are delivered to voltage conversion circuit 123, and voltage conversion circuit 123 is used to the voltage after processing being converted into
After first via voltage signal and the second road voltage signal, first via voltage signal is delivered to main control module 11, by the second tunnel
Voltage signal is delivered to rf board interface circuit.
Further, power interface 121 is preferably using the military rank connector with water proof and dust proof, to meet waterproof
Dust-proof class requirement.
Further, referring to Fig. 3, the EMI protection that Fig. 3 is a kind of RFID card senders provided in an embodiment of the present invention filters
The circuit diagram of circuit；
As shown in figure 3, EMI protection filter circuit 122 includes：Wire connection terminal 1221, Xiao Jite diodes 1222, pressure-sensitive electricity
Hinder the 1223, first air discharge tube 1224, the first Transient Suppression Diode 1225, the second Transient Suppression Diode the 1226, the 3rd
Transient Suppression Diode 1227, the 4th Transient Suppression Diode 1228, the 5th Transient Suppression Diode 1229, the 6th transient state suppress
Diode 12210, the first common mode inductance 12211, the first capacitance 12212, the second capacitance 12213, the first differential mode inductance 12214,
3rd capacitance 12215,12216 and the 4th capacitance 12217 of resettable fuse.
Wire connection terminal 1221 connects positive pole, power cathode and power ground, positive pole and Xiao Jite bis- respectively
The cathode connection of pole pipe 1222, the anode of Xiao Jite diodes 1222 are connected with one end of varistor 1223, bis- poles of Xiao Jite
Pipe 1222 is used for electromagnetic protection and filtering in circuit.
Further, the other end of varistor 1223 is connected with power cathode, and the first of the first air discharge tube 1224
Pole is connected with the anode of Xiao Jite diodes 1222, and the second pole of the first air discharge tube 1224 is connected with ground wire, the first air
3rd pole of discharge tube 1224 is connected with power cathode, and the anode of the first Transient Suppression Diode 1225 is connected with positive pole,
The cathode of first Transient Suppression Diode 1225 is connected with the cathode of the first Transient Suppression Diode 1226, and the first transient state suppresses two
The anode of pole pipe 1226 is connected with ground wire, and the anode of the 3rd Transient Suppression Diode 1227 is connected with ground wire, and the 3rd transient state suppresses
The cathode of diode 1227 is connected with the cathode of the 4th Transient Suppression Diode 1228, and the 4th Transient Suppression Diode 1228 is born
Pole is connected with power cathode, and the anode of the 5th Transient Suppression Diode 1229 is connected with positive pole, and the 5th transient state suppresses two poles
The cathode of pipe 1229 is connected with the cathode of the 6th Transient Suppression Diode 12210, the anode of the 6th Transient Suppression Diode 12210
It is connected with power cathode, varistor 1223, the first air discharge tube 1224, the first Transient Suppression Diode 1225, the first wink
State suppresses diode 1226, the 3rd Transient Suppression Diode 1227, the 4th Transient Suppression Diode 1228, the 5th transient state and suppresses two
1229 and the 6th Transient Suppression Diode 12210 of pole pipe collectively forms lightning protection circuit, for after card sender is struck by lightning, inciting somebody to action
The electric current that lightning stroke produces filters out.
Further, the first pole of the first common mode inductance 12211 is connected with positive pole, the first common mode inductance 12211
Second pole is connected with power cathode, and the second pole of the first common mode inductance 12211 is connected with one end of the first capacitance 12212, and first
The other end of capacitance 12212 is connected with ground wire, and the 3rd pole of the first common mode inductance 12211 connects with one end of the second capacitance 12213
Connect, the other end of the second capacitance 12213 is connected with ground wire, one end and the first common mode inductance of the first differential mode inductance 12214
12211 the second pole connection, the second pole of the first differential mode inductance 12214 are connected with one end of the 3rd capacitance 12215, the first differential mode
The quadrupole of inductance 12214 is connected with the 3rd pole of the first common mode inductance 12211, the 3rd pole of the first differential mode inductance 12214 with
The other end connection of 3rd capacitance 12215, one end of resettable fuse 12216 are connected with one end of the 3rd capacitance 12215, from
The other end for recovering fuse 12216 is connected with positive pole output interface, and one end of the 4th capacitance 12217 and positive pole are defeated
Outgoing interface connects, and the other end of the 4th capacitance 12217 is connected with power cathode, the first common mode inductance 12211, the first capacitance
12212nd, the second capacitance 12213, the first differential mode inductance 12214, the 3rd capacitance 12215 and the 4th capacitance 12217 form filtering
Circuit, for will be filtered out from the interference signal in the power supply that external power supply conveying comes.Resettable fuse 12216 is used to prevent
Only occurs the electric current of over range in circuit.
Further, voltage conversion circuit 123 includes：First voltage converter and second voltage converter, the first electricity
Buckling parallel operation is used to produce first via voltage signal, and preferable first via voltage signal is 3.3V voltages, and by first via voltage
Signal transmission to main control module 11, power by the power supply for main control module 11, and second voltage converter is used to produce the second road electricity
Signal is pressed, preferable second road voltage signal is 5V voltages, and the second road voltage signal is transmitted to radio-frequency module 2.
As shown in Fig. 2, Communication protection module includes：USB module 13 and Ethernet interface module 14.
Further, USB module 13 includes usb 1 31 and USB interface protection circuit 132.Usb 1 31 is used for
With host computer into row data communication, and the data transfer received to USB interface is protected into circuit 132, USB interface protection circuit
132 are used to be protected the interference signal in the data of host computer, and by the data transfer after protection to main control module
11。
Further, usb 1 31 is preferably using the military rank connector with water proof and dust proof, to meet waterproof
Dust-proof class requirement.
Further, referring to Fig. 4, the USB interface that Fig. 4 is a kind of RFID card senders provided in an embodiment of the present invention is protected
The circuit diagram of circuit；
As shown in figure 4, USB interface protection circuit 132 includes：4th air discharge tube 1321, the 8th transient state suppress two poles
Pipe 1322, the 9th Transient Suppression Diode 1323, the tenth Transient Suppression Diode 1324, the 11st Transient Suppression Diode
1325th, the 12nd Transient Suppression Diode 1326, the 13rd Transient Suppression Diode 1327 and the 4th common mode inductance 1328.
Second pole of the 4th air discharge tube 1321 is connected with ground wire, the first pole of the 4th air discharge tube 1321 and USB
The anode of negative signal line and the 8th Transient Suppression Diode 13221322 connect, the 3rd pole of the 4th air discharge tube 1321 with
The anode of USB positive signal lines and the 11st Transient Suppression Diode 1325 connects, and the 4th air discharge tube 1321 is used for when hair
After card device is struck by lightning, the electric current for generation of being struck by lightning is filtered out.
Further, the anode of the 8th Transient Suppression Diode 13221322 and the first pole of the 4th common mode inductance 1328 with
And the 13rd Transient Suppression Diode 1327 anode connection, the cathode of the 8th Transient Suppression Diode 13221322 and the 9th wink
State suppresses the cathode connection of diode 1323, the anode and the tenth Transient Suppression Diode of the 9th Transient Suppression Diode 1323
1324 anode and ground wire connection, the cathode and the 11st Transient Suppression Diode 1325 of the tenth Transient Suppression Diode 1324
Cathode connection, the anode of the 11st Transient Suppression Diode 1325 and the anode of the 12nd Transient Suppression Diode 1326 and
The 3rd pole connection of 4th common mode inductance 1328, the cathode of the 12nd Transient Suppression Diode 1326 and the 13rd transient state suppress two
The cathode connection of pole pipe 1327, the second pole of the 4th common mode inductance 1328 are connected with the output terminal of USB negative signal lines, the 4th common mode
The quadrupole of inductance 1328 is connected with the output terminal of USB positive signal lines, wherein the 8th Transient Suppression Diode the 13221322, the 9th
Transient Suppression Diode 1323, the tenth Transient Suppression Diode 1324, the 11st Transient Suppression Diode 1325, the 12nd transient state
Suppress 1326 and the 13rd Transient Suppression Diode 1327 of diode and form common mode, altogether poor Transient Suppression Diode circuit, use
Interference signal in circuit filters, and the 4th common mode inductance 1328 is then used to be filtered two paths of signals processing.
Further, as shown in Fig. 2, Ethernet interface module 14 include network interface 141, network interface protection circuit 142 and
Network port circuit 143, network interface 141 are used for host computer into row data communication, and the data transfer received to network interface is protected
Protection circuit 142, network interface protection circuit 142 are used to be protected the interference signal in the data of host computer, and will protection
To network port circuit 143, network port circuit 143 is used to data carrying out level conversion data transfer afterwards, and with by level conversion
Data transfer afterwards is to main control module 11.
Further, network interface 141 is preferably using the military rank connector with water proof and dust proof, to meet waterproof
Dust-proof class requirement.
Further, referring to Fig. 5, Fig. 5 is a kind of network interface protection electricity of RFID card senders provided in an embodiment of the present invention
The circuit diagram on road.
As shown in figure 5, network interface protection circuit 142 includes：Second air discharge tube 1421, the 3rd air discharge tube 1422,
First current-limited power resistance 1423, the second current-limited power resistance 1424, the 3rd current-limited power resistance 1425, the 4th current-limited power electricity
Hinder the 1426, the 7th Transient Suppression Diode 1427, the second common mode inductance 1428 and the 3rd common mode inductance 1429.
Further, the transmitting negative signal line of Ethernet interface is connected with the 3rd pole of the second air discharge tube 1421；Ether
The transmitting positive signal line of network interface is connected with the first pole of the second air discharge tube 1421, the second pole of the second air discharge tube 1421
It is connected with ground wire, the reception negative signal line of Ethernet interface is connected with the 3rd pole of the 3rd air discharge tube 1422；Ethernet interface
Receive positive signal line to be connected with the first pole of the 3rd air discharge tube 1422, the second pole of the 3rd air discharge tube 1422 and ground wire
Connection, one end of the first current-limited power resistance 1423 are connected with the 3rd pole of the second air discharge tube 1421, the first current-limited power
The other end of resistance 1423 is connected with the first pin of the 7th Transient Suppression Diode 1427, the second current-limited power resistance 1424
One end is connected with the first pole of the second air discharge tube 1421, and the other end of the second current-limited power resistance 1424 and the 7th transient state press down
The second pin connection of diode 1427 processed, the of one end of the 3rd current-limited power resistance 1425 and the 3rd air discharge tube 1422
Three poles connect, and the other end of the 3rd current-limited power resistance 1425 is connected with the 3rd pin of the 7th Transient Suppression Diode 1427,
One end of 4th current-limited power resistance 1426 is connected with the first pole of the 3rd air discharge tube 1422, the 4th current-limited power resistance
1426 other end is connected with the 4th pin of the 7th Transient Suppression Diode 1427, and the second air discharge tube the 1421, the 3rd is empty
Gas discharge tube 1422, the first current-limited power resistance 1423, the second current-limited power resistance 1424, the 3rd current-limited power resistance 1425 are certainly
Oneself collectively constitutes lightning protection circuit by the 4th current-limited power resistance 1426, for the electricity that after card sender is struck by lightning, lightning stroke is produced
Flow through and filter.
Further, the first pole of the second common mode inductance 1428 and the 8th pin of the 7th Transient Suppression Diode 1427 connect
Connect, the 3rd pole of the second common mode inductance 1428 is connected with the 7th pin of the 7th Transient Suppression Diode 1427, the 3rd common mode electricity
First pole of sense 1429 is connected with the 6th pin of the 7th Transient Suppression Diode 1427, the 3rd pole of the 3rd common mode inductance 1429
It is connected with the 5th pin of the 7th Transient Suppression Diode 1427, the second pole of the second common mode inductance 1428 and the hair of Ethernet interface
The connection of negative signal line delivery outlet is penetrated, the quadrupole of the second common mode inductance 1428 and the transmitting positive signal line delivery outlet of Ethernet interface connect
Connect, the second pole of the 3rd common mode inductance 1429 and the reception negative signal line delivery outlet of Ethernet interface connect, the 3rd common mode inductance
1429 quadrupole and the reception positive signal line delivery outlet of Ethernet interface connect, wherein the 7th Transient Suppression Diode 1427 is used for
Interference signal in circuit is filtered, the second common mode inductance 1428 and the 3rd common mode inductance 1429 are then used to believe two-way
Number it is filtered processing.
Network port circuit 143 includes：The data level that network transformer and ethernet transceiver are used for Ethernet interface is changed
And the data of Ethernet interface and the data communication of main control module 11.
Further, referring to Fig. 6, Fig. 6 is a kind of baseband module of RFID card senders provided in an embodiment of the present invention
Another structure diagram.
As shown in fig. 6, baseband module 1 further includes：Indicator light interface module 15 and rf board interface module 16.
Indicator light interface module 16, rf board interface module 15 are connected with main control module 11.
Further, main control module 11 includes：Central processing unit, synchronous DRAM, flash memory device, solid-state are deposited
Reservoir and Animation Editors, 11 module of main control module are equipped with operating system, for using first via circuit voltage signal conduct
Operating voltage, receive from USB module 13 transmit data or from Ethernet interface module 14 transmit data, and according to
Data determine the air protocol type of Current electronic label, and the data of the air protocol type comprising Current electronic label are led to
Cross rf board interface module 13 and be transmitted to radio-frequency module 2, while main control module is additionally operable to data be encrypted and to safety
The certification of module.
Specifically, main control module 11 determines that the method for the air protocol type of Current electronic label includes according to data：
If the air protocol class that the data that USB module 13 or Ethernet interface module 14 are transmitted include Current electronic label
Type, then uniquely determine the air protocol type of Current electronic label.
If the data that USB module 13 or Ethernet interface module 14 are transmitted do not include the air protocol class of Current electronic label
Type, then send control command to radio-frequency module 2, the several air protocol software kit built in by radio-frequency module 2, samsara to work as
Preceding electronic tag sends the test data of each air protocol software kit, if radio-frequency module 2 receives electronic tag feedack,
Then determine the air protocol type of Current electronic label.
Further, main control module 11 is additionally operable to receive what radio-frequency module 2 was fed back by rf board interface module 16
Data-signal, and control instruction is sent to indicator light interface module 15, for showing card sender current state.
Further, indicator light interface module 15 is used for the control instruction sent according to main control module 11, shows card sender
Current working status, indicator light interface module 15 preferably include three kinds of indicator lights and a power cord, are respectively：Control shape
State indicator light, 3 indicator light of antenna, power supply indicator and power supply line, the supply voltage that preferable power supply line provides
For 3.3V.
Further, rf board interface module 16 is used to receive the second road voltage signal, and is transmitted to radio-frequency module 2, together
When receive the data that main control module 11 is sent, and send data to radio-frequency module 2, wherein main control module 11 connects with rf board
Communication mode between mouth mold block 16 preferably uses the serial communication mode of universal asynchronous receiving-transmitting transmitter.
Further, rf board interface module 16 is additionally operable to receive the data-signal that radio-frequency module 2 is fed back, and transmits
To main control module 11.
Radio-frequency module 2 is used to receive data, and 2 parameter of radio-frequency module is configured, and sends data at the same time
Antenna 3, and the data-signal that reception antenna 3 is fed back, and by data signal transmission to baseband module 1.
Antenna 3 is used to transmit the data to electronic tag, and receives the data-signal that electronic tag is fed back, while by number
It is believed that number being transmitted to radio-frequency module 2.
Further, referring to Fig. 7, Fig. 7 is a kind of radio-frequency module of RFID card senders provided in an embodiment of the present invention
Structure diagram.
As shown in fig. 7, radio-frequency module 2 includes：Transmitting module, receiving module, control module and radio-frequency power supply module.
Transmitting module is used to generate first carrier signal and the second carrier signal, by first carrier signal and after amplification
Modulated by the modulated signal that control module is sent into line amplitude, become the carrier signal with modulation intelligence, and will believe with modulation
The carrier signal of breath is amplified, and after coupling, by the carrier signal transmission with modulation intelligence to antenna, antenna will be with modulation
The carrier signal of information is sent to electronic tag.
Further, transmitting module includes：Frequency synthesizer 211, power splitter 212, difference amplifier 213, orthogonal modulation
Device 214, power amplifier 215, coupler 216 and forward power detector 217.
Frequency synthesizer 211 is connected with power splitter 212, and frequency synthesizer 211 is used to produce radio-frequency carrier signal, and will penetrate
Radio-frequency carrier signal is converted into first carrier signal and the second load by frequency carrier signal transmission to power splitter 212, power splitter 212
Ripple signal, and first carrier signal and the second carrier signal are transmitted separately to quadrature modulator 214 and receiving module, it is poor
Divide amplifier 213 to receive the modulated signal of control module transmission, and quadrature modulator 214 be transmitted to after modulated signal is amplified,
Quadrature modulator 214 modulates first carrier signal and modulated signal into line amplitude, becomes the carrier signal that band is modulated, and by band
Carrier signal with modulation is amplified by the carrier signal transmission of modulation to power amplifier 215, power amplifier 215, and
The carrier signal that amplified band is modulated is transmitted to antenna 3, forward power device 217 and coupling by the straight-through end of coupler 216
The coupled end connection of clutch 216, for detecting the signal power value of the radiofrequency signal after coupling.
Further, receiving module is used to the data-signal that the electronic tag that antenna 3 receives is fed back being amplified,
Wherein data-signal is radiofrequency signal, and amplified data-signal is demodulated, and the data-signal after demodulation is filtered
Amplification, digital processing is carried out by the data-signal after filter and amplification, and to the data signal transmission after digital processing to control unit
Point.
Further, receiving module includes：Low-noise amplifier 221, demodulator 222, this vibration magnifier 223, amplification filter
Ripple device 224, driving amplifier 225 and backward power detector 226.
Low-noise amplifier 221 is connected with coupler 216, and low-noise amplifier 221 is used for what reception antenna 3 was fed back
Data-signal, after the data-signal after coupler 216 couples is amplified, transmission data-signal to demodulator 222, solution
Adjust device 222 by data-signal with carrying out Zero-IF demodulator by amplified second carrier signal of this vibration magnifier 223, and will solution
Data signal transmission to amplifilter 224, amplifilter 224 after tune is amplified and filters to data-signal, and
Amplification and filtered data signal transmission to driving amplifier 225, driving amplifier 225 will be passed through to carry out data-signal
Further amplification, and data-signal is exported to control module, backward power detector 226 and is connected, is used for coupler 216
Whether detection antenna 3 connects normally.
Further, control module is used for the data for receiving the transmission of rf board interface module 16, and data are decoded,
At the same time according to the air protocol type of the Current electronic label included in data, parameter is carried out to transmitting module and receiving module
Configuration.
Further, control module is additionally operable to encode data, and is converted into modulated signal, and modulated signal is passed
Transmitting module is defeated by be modulated.
Further, the data-signal that control module is additionally operable to feed back receiving module passes through after decoding
Rf board interface module 16 is transferred through decoded data-signal to baseband module 1.
Further, control module includes：Microcontroller chip 231, fpga chip 232 and A/D and D/A converter
233。
Microcontroller chip 231 is connected with baseband module 1 and fpga chip 232, and microcontroller chip 231 is used to receive base band
The data that module 1 is transmitted, and data are decoded, while parameter configuration is parsed according to data, by parameter configuration and number
According to fpga chip 232 is transmitted to, fpga chip 232 is examined with A/D and D/A converter 233, frequency synthesizer 211, forward power
Survey device 217 and backward power detector 226 connects, fpga chip 232 is used to adjust digital-to-analogue according to parameter configuration and modulus turns
Parallel operation 233, frequency synthesizer 211, the relevant configuration of forward power detector 217 and backward power detector 226, and
Fpga chip 232 is additionally operable to be encoded the modulated signal for needing to launch, and the modulated signal after coding is transmitted to digital-to-analogue
With analog-digital converter 233, and receive the data-signal that feeds back of A/D and D/A converter 233, and by data-signal into
Row decoding, A/D and D/A converter 233 are connected with difference amplifier 213 and driving amplifier 225, digital-to-analogue and analog-to-digital conversion
The modulated signal for the numeric type that device 233 is used to generate fpga chip 232 is converted into the modulated signal of analog type, and will adjust
To difference amplifier 213, A/D and D/A converter 233 is additionally operable to reception driving amplifier 225 and feeds back signal transmission processed
The data-signal with electronic tag, and data-signal is converted into digital signal type from the data-signal of analog type
Data-signal, and by data signal transmission to fpga chip 232.
Further, several air protocol software kit is built-in with microcontroller chip 231 and fpga chip 232, it is micro-
Control chip 231 receives the control command sent from main control module 11, then by transmitting module to Current electronic label successively
The test data of each air protocol software kit built-in in microcontroller chip 231 and fpga chip 232 is sent, if receiving module
Receive the information of Current electronic tag feedback, it is determined that the air protocol type of Current electronic label.
Further, radio-frequency power supply module includes：First low-dropout regulator, the second low-dropout regulator, the 3rd low pressure
Poor voltage-stablizer and the 4th low-dropout regulator, the first low-dropout regulator, the second low-dropout regulator and the 3rd low voltage difference
Voltage-stablizer is connected in rf board interface module 16, is received after the second voltage signal that rf board interface module 16 is transmitted,
Tertiary voltage signal, the 4th voltage signal and the 5th voltage signal are converted into respectively, it is preferred that tertiary voltage signal is 3V electricity
Pressure, the 4th voltage signal is 3V voltages, and the 5th voltage signal is 3.3V voltages, and tertiary voltage signal is delivered to transmitting module,
4th voltage signal is delivered to receiving module, the 5th voltage signal is delivered to control module respectively and the 4th low voltage difference is steady
Depressor, the 4th low-dropout regulator receives the 5th voltage signal, and the 5th voltage signal is converted into the 6th voltage signal, preferably
, the 6th voltage signal is 1.2V voltages, while the 6th voltage signal is transmitted to control module.
Further, antenna 3 is used to launch the data with modulation intelligence to electronic tag, and receives electronic tag feedback
That returns carries the data-signal of electronic labeling information, while this is carried the data signal transmission of electronic labeling information extremely
Radio-frequency module 2.
Further, card sender further includes：Shell.
Shell includes：Upper cover, housing and bottom cover, upper cover are rectangular sheet structure, and housing is frame-shaped construction, and is set in frame
Horizontal baffle is equipped with, bottom cover is also that rectangular sheet structure, upper cover and lower cover and housing snap together, in upper cover and housing
Antenna 3 is set between horizontal baffle, baseband module 1 and radio-frequency module 2 are set between the horizontal baffle in bottom cover and housing.
In a kind of RFID card senders provided in an embodiment of the present invention, baseband module, radio-frequency module and antenna are provided with,
Wherein baseband module includes：Main control module, power management module, Communication protection module, power management module are used for defeated to power supply
Interference signal in the voltage gone out is protected, and the power supply after protection is exported to main control module and radio-frequency module, communication
The interference signal that protection module is used in the data to host computer input is protected, and by the data transfer after protection to master control
Module, since the power management module in baseband module and Communication protection module can be to external equipments such as power supply and host computers
In interference signal carry out protective treatment, can to avoid interference signal input card sender when interference is brought to card sender so that send out
Data transfer in card device is more stable and accurate.
In embodiment provided herein, it should be understood that disclosed card sender can be by another way
Realize.For example, embodiments described above is only schematical, for example, the division of module, is only a kind of logic function
Division, can have other dividing mode, such as multiple modules can combine or be desirably integrated into another when actually realizing
System, or some features can be ignored, or not perform.It is another, shown or discussed mutual coupling or direct coupling
Conjunction or communication connection can be by some interfaces, the INDIRECT COUPLING or communication connection of device or module, can be electrical, machinery
Or other forms.
In addition, each function module in each embodiment of the present invention can be integrated in a processing module, can also
That modules are individually physically present, can also two or more modules be integrated in a module.
It is to a kind of description of RFID card senders provided by the present invention, for those skilled in the art, foundation above
The thought of the embodiment of the present invention, there will be changes in specific embodiments and applications, to sum up, this specification content
It should not be construed as limiting the invention.
Claims (10)
1. a kind of RFID card senders, it is characterised in that the card sender includes：
Baseband module, radio-frequency module and antenna；
With the baseband module with being connected, the other end is connected with the antenna for described radio-frequency module one end；
The baseband module includes：Main control module, power management module and Communication protection module；
Described power management module one end is connected with power supply, and the other end is connected with the main control module and the radio-frequency module；
Described Communication protection module one end is connected with host computer, and the other end is connected with the main control module；
The interference signal that the power management module is used in the voltage signal to power supply output is protected, and will protection
Voltage signal afterwards is exported to the main control module and the radio-frequency module；
The interference signal that the Communication protection module is used in the data to host computer output is protected, and by after protection
Data transfer to the main control module；
The main control module is used to send data to the radio-frequency module, and receives the radio-frequency module according to data feedback
The data-signal returned.
2. card sender according to claim 1, it is characterised in that the power management module includes：Power interface, EMI
Protect filter circuit and voltage conversion circuit；
Described power interface one end is connected with the power supply, and the other end is connected with one end of the EMI protection filter circuit, described
The other end of EMI protection filter circuit is connected with one end of the voltage conversion circuit, the other end of the voltage conversion circuit
It is connected with the main control module；
The power interface is used to receive externally input power supply, and the power supply is delivered to the EMI protection filter circuit；
Interference signal in the voltage that the EMI protection filter circuit is used to export the power supply is protected, and will protection
Voltage afterwards is delivered to the voltage conversion circuit；
The voltage conversion circuit is used for after voltage is converted into first via voltage signal and the second road voltage signal, by described in
First via voltage signal is delivered to the main control module, and second road voltage signal is delivered to the radio frequency plate interface electricity
Road.
3. card sender according to claim 2, it is characterised in that the EMI protection filter circuit includes：Wire connection terminal,
Xiao Jite diodes, varistor, the first air discharge tube, the first Transient Suppression Diode, the second Transient Suppression Diode,
Three Transient Suppression Diodes, the 4th Transient Suppression Diode, the 5th Transient Suppression Diode, the 6th Transient Suppression Diode,
One common mode inductance, the first capacitance, the second capacitance, the first differential mode inductance, the 3rd capacitance, resettable fuse and the 4th capacitance；
The wire connection terminal connects positive pole, power cathode and power ground, the positive pole and the Xiao Ji respectively
The cathode connection of special diode, the anode of the Xiao Jite diodes are connected with one end of the varistor, the pressure-sensitive electricity
The other end of resistance is connected with the power cathode, and the first pole of first air discharge tube is negative with the Xiao Jite diodes
Pole connects, and the second pole of first air discharge tube is connected with the ground wire, the 3rd pole of first air discharge tube and
The power cathode connection, the anode of first Transient Suppression Diode are connected with the positive pole, first transient state
The cathode for suppressing diode is connected with the cathode of second Transient Suppression Diode, and second Transient Suppression Diode is born
Pole is connected with the ground wire, and the anode of the 3rd Transient Suppression Diode is connected with the ground wire, and the 3rd transient state suppresses
The cathode of diode is connected with the cathode of the 4th Transient Suppression Diode, the anode of the 4th Transient Suppression Diode with
The power cathode connection, the anode of the 5th Transient Suppression Diode are connected with the positive pole, the 5th transient state
The cathode for suppressing diode is connected with the cathode of the 6th Transient Suppression Diode, and the 6th Transient Suppression Diode is born
Pole is connected with the power cathode, and the first pole of first common mode inductance is connected with the positive pole, first common mode
Second pole of inductance is connected with the power cathode, and the second pole of first common mode inductance and one end of first capacitance connect
Connect, the other end of first capacitance is connected with the ground wire, the 3rd pole and second capacitance of first common mode inductance
One end connection, the other end of second capacitance is connected with the ground wire, one end of first differential mode inductance with it is described
The second pole connection of first common mode inductance, the second pole of first differential mode inductance are connected with one end of the 3rd capacitance, institute
The quadrupole for stating the first differential mode inductance is connected with the 3rd pole of first common mode inductance, the 3rd pole of first differential mode inductance
It is connected with the other end of the 3rd capacitance, one end of the resettable fuse is connected with one end of the 3rd capacitance, institute
The other end for stating resettable fuse is connected with positive pole output interface, one end and the positive pole of the 4th capacitance
Output interface connects, and the other end of the 4th capacitance is connected with the power cathode.
4. card sender according to claim 1, it is characterised in that the Communication protection module includes：USB module and with
Too network interface module；
The USB module includes：USB interface and USB interface protection circuit；
The Ethernet interface module includes network interface, network interface protection circuit and network port circuit；
The USB interface is used for the host computer into row data communication, and by the data transfer received to the USB
Interface protective circuit, the USB interface protection circuit are used to be protected the interference signal in the data, and will be anti-
Data transfer after shield is to the main control module；
The network interface is used to protect into row data communication, and by the data transfer received to the network interface with the host computer
Protection circuit, the network interface protection circuit are used to be protected the interference signal in the data from the host computer, and will be anti-
To the network port circuit, the network port circuit is used to the data carrying out level conversion data transfer after shield, and with inciting somebody to action
Data transfer after level conversion is to the main control module.
5. card sender according to claim 4, it is characterised in that the USB interface protection circuit includes：4th air is put
Fulgurite, the 8th Transient Suppression Diode, the 9th Transient Suppression Diode, the tenth Transient Suppression Diode, the 11st transient state suppress
Diode, the 12nd Transient Suppression Diode, the 13rd Transient Suppression Diode and the 4th common mode inductance；
Second pole of the 4th air discharge tube is connected with the ground wire, the first pole of the 4th air discharge tube and USB
The anode of negative signal line and the 8th Transient Suppression Diode connects, the 3rd pole of the 4th air discharge tube and USB
The anode of positive signal line and the 11st Transient Suppression Diode connect, the anode of the 8th Transient Suppression Diode with
First pole of the 4th common mode inductance and the anode connection of the 13rd Transient Suppression Diode, the 8th transient state suppression
The cathode of diode processed is connected with the cathode of the 9th Transient Suppression Diode, the anode of the 9th Transient Suppression Diode
Be connected with the anode of the tenth Transient Suppression Diode and the ground wire, the cathode of the tenth Transient Suppression Diode with
The cathode connection of 11st Transient Suppression Diode, the anode and the described 12nd of the 11st Transient Suppression Diode
3rd pole of the anode of Transient Suppression Diode and the 4th common mode inductance connects, the 12nd Transient Suppression Diode
Cathode be connected with the cathode of the 13rd Transient Suppression Diode, the second pole of the 4th common mode inductance and the USB
The output terminal connection of negative signal line, the quadrupole of the 4th common mode inductance are connected with the output terminal of the USB positive signal lines.
6. card sender according to claim 4, it is characterised in that the network interface protection circuit includes：Second atmospherical discharges
Pipe, the 3rd air discharge tube, the first current-limited power resistance, the second current-limited power resistance, the 3rd current-limited power resistance, the 4th current limliting
Power resistor, the 7th Transient Suppression Diode, the second common mode inductance, the 3rd common mode inductance；
The transmitting negative signal line of Ethernet interface is connected with the 3rd pole of second air discharge tube；The transmitting of Ethernet interface is just believed
Number line is connected with the first pole of second air discharge tube, and the second pole and the ground wire of second air discharge tube connect
Connect, the reception negative signal line of Ethernet interface is connected with the 3rd pole of the 3rd air discharge tube；The reception of Ethernet interface is just believed
Number line is connected with the first pole of the 3rd air discharge tube, and the second pole and the ground wire of the 3rd air discharge tube connect
Connect, one end of the first current-limited power resistance is connected with the 3rd pole of second air discharge tube, the first current limliting work(
The other end of rate resistance is connected with the first pin of the 7th Transient Suppression Diode, and the one of the second current-limited power resistance
End is connected with the first pole of second air discharge tube, the other end of the second current-limited power resistance and the 7th transient state
Suppress the second pin connection of diode, one end of the 3rd current-limited power resistance and the 3rd of the 3rd air discharge tube the
Pole connects, and the other end of the 3rd current-limited power resistance is connected with the 3rd pin of the 7th Transient Suppression Diode, institute
The one end for stating the 4th current-limited power resistance is connected with the first pole of the 3rd air discharge tube, the 4th current-limited power resistance
The other end be connected with the 4th pin of the 7th Transient Suppression Diode, the first pole of second common mode inductance with it is described
The 8th pin connection of 7th Transient Suppression Diode, the 3rd pole and the 7th transient state of second common mode inductance suppress two
The 7th pin connection of pole pipe, the first pole of the 3rd common mode inductance and the 6th pin of the 7th Transient Suppression Diode
Connection, the 3rd pole of the 3rd common mode inductance are connected with the 5th pin of the 7th Transient Suppression Diode, and described second
The transmitting negative signal line delivery outlet of second pole of common mode inductance and Ethernet interface connects, the quadrupole of second common mode inductance with
The transmitting positive signal line delivery outlet connection of Ethernet interface, letter is born in the second pole of the 3rd common mode inductance and the reception of Ethernet interface
The connection of number line delivery outlet, the quadrupole of the 3rd common mode inductance and the reception positive signal line delivery outlet of Ethernet interface connect.
7. the card sender according to claim 1 to 6, it is characterised in that the baseband module further includes：Indicator light interface mould
Block and rf board interface module；
The indicator light interface module, the rf board interface module are connected with the main control module；
The main control module be used for using the first via voltage signal be used as operating voltage, receive come from the USB module or
The data of Ethernet interface module transfer described in person, and determine according to the data air protocol type of Current electronic label,
And the data of the air protocol type comprising Current electronic label are transmitted to the radio frequency by the rf board interface module
Module；
The main control module is additionally operable to the number for receiving the radio-frequency module by the rf board interface module and feeding back
It is believed that number, and the data-signal is fed back into host computer, and control instruction is sent to the indicator light interface module, it is used for
Show the card sender current state；
The indicator light interface module is used for the control instruction sent according to the main control module, shows that the card sender is worked as
Preceding working status；
The rf board interface module is used to receive second road voltage signal, and is transmitted to the radio-frequency module, connects at the same time
The data that the main control module is sent are received, and send data to the radio-frequency module；
The rf board interface module is additionally operable to receive the data-signal that the radio-frequency module is fed back, and is transmitted to institute
State main control module.
8. the card sender according to right wants 7, it is characterised in that the sky that Current electronic label is determined according to the data
Mouth protocol type includes：
If the USB module or the data of the Ethernet interface module transfer include the air protocol class of Current electronic label
Type, then uniquely determine the air protocol type of Current electronic label；
If the USB module or the data of the Ethernet interface module transfer do not include the air protocol class of Current electronic label
Type, then send control command to the radio-frequency module, the several air protocol software kit built in by the radio-frequency module, wheel
The test data that Current electronic label sends each air protocol software kit is backed towards, if to receive electronic tag anti-for the radio-frequency module
The information of feedback, it is determined that the air protocol type of Current electronic label.
9. card sender according to claim 1, it is characterised in that the radio-frequency module includes：Transmitting module, receive mould
Block, control module and radio-frequency power supply module；
The transmitting module is used to generate first carrier signal and the second carrier signal, and the first carrier signal is put with passing through
Being modulated by the modulated signal that the control module is sent into line amplitude after big, becomes the carrier signal with modulation intelligence, and will
The carrier signal with modulation intelligence is amplified, after coupling, by the carrier signal transmission with modulation intelligence extremely
The antenna, the antenna send the carrier signal with modulation intelligence to the electronic tag；
The data-signal that the electronic tag that the receiving module is used to receive on the antenna is fed back is put
Greatly, the amplified data-signal is demodulated, amplification is filtered to the data-signal after demodulation, filtering is put
The data-signal after big carries out digital processing, and to the data signal transmission after digital processing to the control unit
Point；
The control module is used for the data for receiving the rf board interface module transmission, and the data are solved
Code, while according to the air protocol type of the Current electronic label included in the data, to the transmitting module and described
Receiving module carries out parameter configuration；
The control module is additionally operable to encode the data, and is converted into the modulated signal, and the modulation is believed
Number being transferred to the transmitting module is modulated；
The data-signal that the control module is additionally operable to feed back the receiving module passes through institute after decoding
State rf board interface module and be transferred through the decoded data-signal to the baseband module；
The radio-frequency power supply module is used for after receiving the second voltage signal from rf board interface module transmission, will
The second voltage signal is converted into some voltage signals, and is transmitted to the transmitting module, the receiving module and described
Control module.
The antenna is used to launch the data to electronic tag, and receives the data-signal that the electronic tag returns,
At the same time by the data signal transmission to the radio-frequency module.
10. card sender according to claim 1, it is characterised in that the card sender further includes：Shell；
The shell includes：Upper cover, housing and bottom cover, the upper cover are rectangular sheet structure, and the housing is frame-shaped construction,
And horizontal baffle is provided with frame, the bottom cover is also rectangular sheet structure, the upper cover and the lower cover and the housing
Snap together, the antenna be set between the horizontal baffle in the upper cover and the housing, the bottom cover with it is described
The baseband module and the radio-frequency module are set between the horizontal baffle in housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711453191.7A CN107977690A (en) | 2017-12-28 | 2017-12-28 | A kind of RFID card senders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711453191.7A CN107977690A (en) | 2017-12-28 | 2017-12-28 | A kind of RFID card senders |
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| Publication Number | Publication Date |
|---|---|
| CN107977690A true CN107977690A (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711453191.7A Pending CN107977690A (en) | 2017-12-28 | 2017-12-28 | A kind of RFID card senders |
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| US20130093568A1 (en) * | 2011-10-12 | 2013-04-18 | Marvell World Trade Ltd. | Antenna interface for radio frequency identification circuit |
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| CN208433014U (en) * | 2017-12-28 | 2019-01-25 | 深圳市航天华拓科技有限公司 | A kind of RFID card sender |
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|---|---|---|---|---|
| US6366764B1 (en) * | 1998-05-08 | 2002-04-02 | Industrial Technology Research Institute | Wireless transmitter/receiver utilizing DSSS technology |
| US20100072277A1 (en) * | 2007-06-08 | 2010-03-25 | Nam Yun Kim | Tag device, reader device, and rfid system |
| CN201828937U (en) * | 2010-10-18 | 2011-05-11 | 杭州傅立叶科技有限公司 | Integrated dual-frequency card sender |
| US20130093568A1 (en) * | 2011-10-12 | 2013-04-18 | Marvell World Trade Ltd. | Antenna interface for radio frequency identification circuit |
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