CN108197516A - Wireless near field communication card-reading apparatus and system - Google Patents

Wireless near field communication card-reading apparatus and system Download PDF

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Publication number
CN108197516A
CN108197516A CN201711499069.3A CN201711499069A CN108197516A CN 108197516 A CN108197516 A CN 108197516A CN 201711499069 A CN201711499069 A CN 201711499069A CN 108197516 A CN108197516 A CN 108197516A
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CN
China
Prior art keywords
near field
reading apparatus
field communication
nfc
module
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Pending
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CN201711499069.3A
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Chinese (zh)
Inventor
杨卿
简云定
付杰
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Beijing Qihoo Technology Co Ltd
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Beijing Qihoo Technology Co Ltd
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Priority to CN201711499069.3A priority Critical patent/CN108197516A/en
Publication of CN108197516A publication Critical patent/CN108197516A/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009Methods 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
    • G06K7/10316Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
    • G06K7/10336Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the near field type, inductive coil
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G06K17/0022Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
    • G06K17/0029Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers

Abstract

The present invention relates to technical field of near field communication more particularly to wireless near field communication card-reading apparatus and system, including wireless near field communication (NFC) antenna, RF front-end module, radio-frequency module and processor;NFC antenna is that the antenna of closed shape is formed by copper wire winding;NFC antenna is arranged on RF front-end module;RF front-end module is connect with radio-frequency module;Processor is connect with radio-frequency module;Wherein:NFC antenna is used to receive the initial data of NFC target devices transmission, RF front-end module is used to the signal type of initial data being converted into digital signal by analog signal, radio-frequency module is used for the signal type for exporting RF front-end module and carries out protocol communication processing for the initial data of digital signal, processor be used for by processor export through protocol communication, treated that initial data is decoded, acquisition decoding data.Invention enhances the effects that NFC card-reading apparatus reads signal, improve the reading distance of NFC card-reading apparatus.

Description

Wireless near field communication card-reading apparatus and system
Technical field
The present invention relates to technical field of near field communication more particularly to wireless near field communication card-reading apparatus and systems.
Background technology
Wireless near field communication (Near Field Communication, NFC) is a kind of short-range high frequency channel radio Letter technology allows to carry out contactless Point-to-Point Data Transmission exchange data between electronic equipment, which is penetrated by contact-free formula Frequency identification technology (Radio Frequency Identification, RFID) develops, and basis is RFID and interconnection skill Art.NFC technique combining induction card reader, icah wavw and point-to-point function on one chip, can be in short distance It is identified with compatible equipment and data exchange.Due to convenience possessed by NFC technique, it is consequently applied to every field.
For NFC device, NFC card-reading apparatus and NFC target devices are generally comprised, in NFC target devices close to NFC During card-reading apparatus, NFC card-reading apparatus can read data in NFC target devices.In the prior art, in NFC card-reading apparatus NFC antenna is printed to be formed using printed circuit board (PCB) cabling, there are Card Reader apart from it is short the problem of, usual Card Reader distance only 1 ~4cm, that is, NFC target devices can only realize the reading of information in distance NFC 1~4cm of card-reading apparatus.
Invention content
In view of the above problems, it is proposed that the present invention overcomes the above problem in order to provide one kind or solves at least partly State the wireless near field communication card-reading apparatus and system of problem.
The first aspect according to the present invention provides a kind of wireless near field communication card-reading apparatus, including closely without Line communication (NFC) antenna, RF front-end module, radio-frequency module and processor;The NFC antenna is to form closing by copper wire winding The antenna of formula shape,;The NFC antenna is arranged on the RF front-end module;The RF front-end module and the radio frequency Module connects;The processor is connect with the radio-frequency module;Wherein:
The NFC antenna is used to receive the initial data of NFC target devices transmission, and the RF front-end module is used for institute The signal type for stating initial data is converted into digital signal by analog signal, and the radio-frequency module is used for the radio-frequency front-end mould The signal type of block output carries out protocol communication processing for the initial data of digital signal, and the processor is used for by described in Processor output through protocol communication, treated that the initial data is decoded, obtain decoding data.
Preferably, the areal extent of the NFC antenna is 50~100cm2
Preferably, the closed shape is rectangle or circle.
Preferably, wireless communication module is further included;
The wireless communication module is connected to the processor, the wireless communication module be used for by the decoding data without Line is transferred to long-range receiving device.
Preferably, the wireless communication module is ZigBee communication module.
Preferably, the processor is ARM embeded processors.
Preferably, built-in power supply is further included, the built-in power supply is set for the wireless near field communication Card Reader It is standby that electric energy is provided.
Preferably, power source charges module is further included;
The power source charges module is connect with the built-in power supply, and the power source charges module is used for described built-in Power supply charges.
Preferably, the charging interface of the power source charges module is universal serial bus (USB) interface.
The second aspect according to the present invention provides a kind of wireless near field communication card-reading system, which is characterized in that packet Include NFC target devices and the wireless near field communication card-reading apparatus as described in the first aspect.
In terms of third according to the present invention, a kind of wireless near field communication remote data transmission system is provided, it is special Sign is, the wireless near field communication card-reading apparatus including long-range receiving device and as described in the first aspect.
Preferably, the long-range receiving device includes wireless communication module, and the wireless communication module is used to receive institute State the decoding data of wireless near field communication card-reading apparatus transmission.
Preferably, the wireless communication module is ZigBee communication module.
The 4th aspect according to the present invention, provides a kind of short-distance wireless communication system, which is characterized in that including NFC target devices, long-range receiving device and the wireless near field communication card-reading apparatus as described in the first aspect.
Wireless near field communication card-reading apparatus according to the present invention, wireless near field communication card-reading system, near radio Communicating remote data transmission system and short-distance wireless communication system, NFC card-reading apparatus include NFC antenna, RF front-end module, Radio-frequency module and processor, NFC antenna are arranged on RF front-end module, and RF front-end module is connect with radio-frequency module, processing Device is connect with radio-frequency module, wherein, NFC antenna is used to receive the initial data of NFC target devices transmission, and RF front-end module is used In the signal type of initial data is converted into digital signal by analog signal, radio-frequency module is used to believe signal type for number Number initial data carry out protocol communication processing, processor is used for that treated that initial data is decoded by protocol communication, obtains Decoding data is obtained, the present invention can improve NFC days by the use of the antenna that closed shape is formed by copper wire winding as NFC antenna The antenna performance of line so as to enhance the effect that NFC card-reading apparatus reads signal, improves the reading distance of NFC card-reading apparatus.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can It is clearer and more comprehensible, below the special specific embodiment for lifting the present invention.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this field Technical staff will become clear.Attached drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention Limitation.And throughout the drawings, identical component is represented with identical reference pattern.In the accompanying drawings:
Fig. 1 shows a kind of structure diagram of wireless near field communication card-reading apparatus in the embodiment of the present invention.
Fig. 2 shows the structure diagrams of NFC antenna rectangular in the embodiment of the present invention;
Fig. 3 shows the structure diagram of NFC antenna rounded in the embodiment of the present invention;
Fig. 4 shows the circuit diagram of the matching impedance circuit of NFC antenna in the embodiment of the present invention;
Fig. 5 shows the circuit diagram of the application circuit configuration circuit of RF front-end module in the embodiment of the present invention;
Fig. 6 shows the system framework figure of ARM embeded processors in the embodiment of the present invention;
Fig. 7 shows a kind of structure diagram of wireless near field communication card-reading system in the embodiment of the present invention;
Fig. 8 shows a kind of structural representation of wireless near field communication remote data transmission system in the embodiment of the present invention Figure;
Fig. 9 shows a kind of structure diagram of short-distance wireless communication system in the embodiment of the present invention.
Specific embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in attached drawing Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure Completely it is communicated to those skilled in the art.
First embodiment of the invention provides a kind of wireless near field communication card-reading apparatus, before NFC antenna 101, radio frequency End module 102, radio-frequency module 103 and processor 104, the connection relation of each structure is such as in the wireless near field communication card-reading apparatus Shown in Fig. 1, NFC antenna 101 is arranged on RF front-end module 102, and RF front-end module 102 is connect with radio-frequency module 103, place Reason device 104 is connect with radio-frequency module 103, and NFC antenna 101 is that the antenna of closed shape is formed by copper wire winding.
Specifically, the NFC antenna 101 in the application is formed by pure copper wire coiling, both can be by manually coiling shape Into, can also be formed by machine coiling, coiling formed NFC antenna 101 print to be formed different from PCB trace of the prior art NFC antenna 101.Meanwhile in this application, NFC antenna 101 has closed shape, it is preferred that the area model of NFC antenna 101 It encloses for 50~100cm2, that is, the areal extent of closed shape is 50~100cm2, by by the areal extent of NFC antenna 101 Control is in 50~100cm2The antenna performance of NFC antenna 101 can be further improved.
Can be rectangle for the shape of NFC antenna 101, or it is round, and when the shape of NFC antenna 101 There to be better reception when receiving signal for circle.When the shape of NFC antenna 101 is rectangle, as shown in Fig. 2, Then the areal extent of the rectangle is 50~100cm2, when the shape of NFC antenna 101 is round, as shown in figure 3, the then circle Areal extent be 50~100cm2
Further, NFC antenna 101 usually uses in both environments, the first environment is:Nonmetallic or Primary communication face To be nonmetallic, second of environment is:Metal or Primary communication face are metal.Under the first above-mentioned environment, NFC antenna 101 can Think helical antenna or differential antennae, under above-mentioned second of environment, NFC antenna 101 can be slot antenna.At NFC days In the manufacturing process of line 101, individual layer may be used, individual layer is passed a bridge, bilayer or multilayer.
For the course of work of NFC antenna 101, NFC antenna 101 is used for root module before coordinating radio frequency and receives NFC mesh The initial data that marking device is sent.And for NFC target devices, NFC target devices to be obtained for NFC card-reading apparatus The object of data content, in NFC target devices storage have initial data, can read NFC targets using NFC card-reading apparatus sets Initial data in standby.The matching impedance circuit of NFC antenna 101 is as shown in figure 4, the voltage on its pin of NFC antenna 101 is set Between GND and VDD, demodulation input need to have identical performance and show identical sensitivity.
For the Principle of Communication of NFC antenna 101, the communication infrastructure of NFC antenna 101 is resonance, and the parameter of resonance is Resonant frequency, resonant frequency are referred in the circuit containing capacitance and inductance, if capacitance and inductance in parallel, in fact it could happen that In the period of some very little:The voltage of capacitance gradually rises, and electric current gradually decreases;At the same time the electric current of inductance but by Cumulative to add, the voltage of inductance but continuously decreases.And within the period of another very little:The voltage of capacitance continuously decreases, and electric Stream but gradually increases;At the same time the electric current of inductance but gradually decreases, and the voltage of inductance but gradually rises.The increase of voltage can be with Reach a positive maximum value, the reduction of voltage also can reach a negative maximum value, and similary sense of current is in this process In the variation of positive negative direction can also occur, we are known as the oscillation that electricity occurs for circuit at this time, when resonance circuit external input voltage Sinusoidal frequency when reaching a certain specific frequency (i.e. the resonant frequency of the circuit), the induction reactance of resonance circuit is equal with capacitive reactance, humorous Circuit shake externally in pure resistance property, at this time as resonance.The resonant frequency equation of NFC antenna 101 is:
The NFC antenna 101 of the application using pure copper wire coiling due to being formed, and the area of closed shape that coiling is formed Ranging from 50~100cm2, the antenna performance of NFC antenna 101 is improved, so as to enhance the effect that NFC card-reading apparatus reads signal Fruit improves the reading distance of NFC card-reading apparatus.
For RF front-end module 102 and radio-frequency module 103, radio-frequency devices are the cores of wireless connection, as long as needing Wanting the place of wireless connection just needs radio-frequency devices, and radio-frequency devices are the basic parts of wireless telecommunications system, are being wirelessly communicated In the process, radio-frequency devices include two effects:During signal is emitted, binary signal is converted into high frequency by radio-frequency devices The radio magnetic wave signal of rate;During signal is received, radio-frequency devices by the electromagnetic wave signal received be converted into two into Digital signal processed.Either which kind of communication protocol, the high or low , Pei Ge radio-frequency devices modules of communication frequency used are that system must Standby basic part.The signal of 13.56Mhz is either used still to use 900/ as transport vehicle NFC system 1800Mhz signals as transport vehicle GSM communication systems or use 24Ghz and 77Ghz electromagnetic wave signals as transmission carry The unmanned millimetre-wave radar of body is required to Pei Ge radio-frequency devices modules.
In this application, NFC antenna 101 receives the initial data of NFC target devices transmission, then, radio-frequency front-end first Module 102 is digitized initial data processing, and the signal type of initial data is converted into digital signal by analog signal, RF front-end module 102 itself is driven by microcontroller, and the application selects the RF front-end module of high integration, firing frequency performance 102.The application circuit configuration circuit figure of RF front-end module 102 is as shown in Figure 5.Radio-frequency module 103 is used for signal type The initial data of digital signal carries out protocol communication processing, wherein, including carrying out protocol encapsulation to signal.
For processor 104, processor 104 is used for that treated that initial data is decoded by protocol communication, obtains Decoding data is obtained, and card reader of the prior art does not support the decoding to initial data.104 preferred ARM of processor is embedded Processor, embeded processor are the cores of embedded system, and embeded processor is the hardware of control and auxiliary system operation Unit.ARM embeded processors have the characteristics that:There is very strong tenability to real-time multi-task, multitask can be completed simultaneously And have shorter interrupt response time, so as to which the execution time for making internal code and the real-time kernel heart minimizes; With the very strong memory block defencive function of function.This is because the software configuration of embedded system modularization, and in order to avoid Occur the cross action of mistake between software module, need to design powerful memory block defencive function, while be also beneficial to soft Part diagnoses;Expansible processor structure, most can promptly carry out the embedded microprocessor for the peak performance for satisfaction application Device;The necessary power consumption of embedded microprocessor is very low, in particular in portable wireless and mobile calculating and communication equipment Battery-powered embedded system is even more so, there was only mW even W grades of μ if desired for power consumption.The system of ARM embeded processors Frame is as shown in fig. 6, including clock crystal oscillator 601, equipment power supply 602, memory expansion 603, CPU604, device screen 605, debugging IO606 and functional interface 607, wherein, CPU604 is the core of this system, and all periphery configurations are all associated with it.ARM Embeded processor has the characteristics that:In terms of efficiency, there is lower power consumption, longer battery life, with lower MHz Or shorter inactivity period operation, the sleep pattern based on framework are supported, sleep more intelligent than the working method of 8/16 equipment Time is longer.In terms of code, lower silicon cost, high density instruction set, than 8/16 equipment completed per byte more multioperation, Smaller RAM, ROM or flash memory requirement.In use, the whole world between faster software development and reuse, multiple suppliers Standard, code for code compatibility, unified tool and operating system are supported.In aspect of performance, can be realized with lower power consumption richer Rich function.
In this application, NFC card-reading apparatus can also include:Wireless communication module, wireless communication module and processor 104 Connection, wireless communication module are used to decoding data radioing to long-range receiving device, wherein, long-range receiving device can Think that computer, mobile phone or other electronic equipments with information receiving ability and presentation of information ability, remote device exist Receiving decoding data later can show decoding data, and card reader of the prior art only allows through USB numbers It is connected according to line with long-range receiving device, could realizes the communication of data.For how by the decoding data in NFC card-reading apparatus Long-range receiving device is transferred to, in this application, wireless communication module is ZigBee communication module.
Specifically, ZigBee is the low-power consumption LAN protocol based on IEEE802.15.4 standards.According to international standard Regulation, ZigBee technology is the wireless communication technique of a kind of short distance, low-power consumption, its main feature is that closely, low complex degree, from group Knit, low-power consumption, low data rate.It is mainly suitable for automatically controlling and remote control field, various equipment can be embedded in. ZigBee is a kind of cheap, low-power consumption near radio networking mechanics of communication.ZigBee is a kind of low speed short-distance transmission Wireless network protocol.Zigbee protocol is respectively physical layer (PHY), MAC layer (MAC), transport layer from top to bottom (TL), network layer (NWK), application layer (APL) etc..Wherein, physical layer and MAC layer follow IEEE 802.15.4 marks Accurate regulation.
Meanwhile ZigBee is a kind of highly reliable wireless data sending network, similar to CDMA and GSM network.ZigBee numbers pass Module is similar to mobile network base station.Communication distance is from the 75m of standard to hundreds of meter, several kilometers, and supports infinite expanding. ZigBee be one by can the wireless data sending network platform forming of more to 65000 wireless data transmission modules, in whole network In the range of, it can be in communication with each other between each ZigBee-network digital transmission module, the distance between each network node can be from mark Accurate 75m infinite expandings.Unlike CDMA nets or the GSM net of mobile communication, ZigBee-network is mainly industry spot Automation control data transmission and establish, thus, it must have simple, easy to use, reliable operation, low-cost feature. Each ZigBee-network node not only itself can be used as monitored object, for example, its sensor connected directly carries out data Acquisition and monitoring can also be transmitted through the data information come by the other network node of transfer automatically.In addition to this, each ZigBee net Network node (FFD) can also oneself signal covering in the range of and multiple isolated sons for not undertaking network information transfer task Node (RFD) wireless connection.
Further, for the safety of ZigBee communication module and performance, ZigBee communication module will be very high Safety, meanwhile, also with relatively low power consumption, in addition, networking capability is strong, a ZigBee gateway can connect more than 65000 Equipment can form the stabilizing network more than 100 kinds of equipment in current practical application, and such network size is remote The technologies such as super WiFi, Z-Wave, bluetooth.
In this application, NFC card-reading apparatus can also include:Built-in power supply, built-in power supply for closely without Line communication card-reading apparatus provides electric energy.Built-in power supply can be lithium battery.By adding built-in supply in NFC card-reading apparatus Power supply can improve the cruising ability of NFC card-reading apparatus.Wherein, the charging voltage of built-in power supply is 5V, charging current For 500mA.
In this application, NFC card-reading apparatus can also include:Power source charges module, power source charges module and built-in power supply Power supply connects, and power source charges module is used to charge for built-in power supply.The charging interface of power source charges module connects for USB Mouthful.So as to which the NFC card-reading apparatus of the application supports USB chargings.
Based on same inventive concept, second embodiment of the invention provides a kind of wireless near field communication card-reading system, such as Fig. 7 It is shown, NFC card-reading apparatus 702 including NFC target devices 701 and as in the first embodiment.
For NFC target devices 701, NFC target devices 701 can be the electricity that mobile phone etc. can store initial data Sub- equipment, or card form target device, such as the bank card with NFC function.For the bank card with NFC function For, communication follows 1444 agreements of ISO/IEC.For further, the principle of the high frequency card of 13.56M is electromagnetic induction skill Art by the electromagnetic field of alternation, provides energy to passive card, realizes card and the communication of card reader.1444 agreements of ISO/IEC Define the type of two kinds of cards:Type A and Type B, two kinds of cards work under 13.56MHz wireless frequencies.Meanwhile ISO/ IEC14443 defines the physical characteristic of neighbouring card (PICC);Need to supply the property of the field of energy and feature and neighbouring coupling Close the two-way communication between equipment (PCDs) and neighbouring card (PICCs);When blocking (PICCs) into local coupling equipment (PCDs) Wheel is sought, the character format in communication initialization stage, frame structure, timing information;The block transport protocol of non-contacting half pair of work(is simultaneously fixed Justice activation and the step of stop agreement.Transport protocol is simultaneously suitable for TYPEA and TYPEB.14443 protocol codes of ISO/IEC Technology includes:The difference of mode is sent and received according to signal, ISO/IEC14443-3 defines two kinds of cards of TYPEA, TYPEB Type.Their modulation depth for being differing principally in that carrier wave and the coding mode of binary number.Signal is transmitted from PCD to PICC When, the two is to transmit signal by the radio-frequency carrier of 13.56Mhz.When signal is transmitted from PICC to PCD, the two passes through modulation Transmission wave signal is carried, subcarrier frequency is all 847KHz.
For TYPEA type cards, when transmitting signal to card on read-write heads, passed by the radio-frequency carrier of 13.65MHz The number of delivering letters.It uses scheme to be transmitted for synchronous, improved Miller coding modes by 100%ASK;When card is to read-write implement When transmitting signal, transmission wave signal is carried by modulation.Use the subcarrier transmission Manchester codings of 847kHz.Briefly, When representing information " 1 ", signal has 0.3 delicate gap, and when representing information " 0 ", signal may have gap that may also not have Have, it is and front and rear information-related.The advantages of this mode is that information difference is apparent, and the chance being disturbed is few, and reaction speed is fast, no Easy maloperation;Shortcoming is when needing continual raising energy to non-contact card, and energy is it is possible that will appear fluctuation.
For TYPEB type cards, carried when read-write implement transmits signal to card and by the radio frequency of 13.65MHz Wave signal, but using asynchronous, nrz encoding mode, the scheme transmitted by using 10%ASK;It is transmitted in card to read-write implement Then it is that the BPSK codings used are modulated during signal.I.e. difference lies in the signal width of information " 1 " for information " 1 " and information " 0 " Degree is big, i.e., signal is strong, and the signal amplitude of information " 0 " is small, i.e., signal is weak.The advantages of this mode is that continual signal passes It passs, is not in the situation of energy fluctuation;
By above-mentioned analysis it is found that TYPEA and TYPEB have following difference:When TYPEB receives signal, it will not be damaged because of energy It loses and stops chip interior logic and software work.It arrives in NPAUSE, the chip of TYPEA cannot get clock, and TYPEB is used 10%ASK, card can obtain lasting energy from reader;Easy voltage stabilizing during TYPEB, so relatively more safe and reliable.TYPEA Card using 100% modulation system, when modulating generation, transmit, and is only maintained by card internal capacitance, so card by noenergy Communication must reach certain rate, terminate this modulation before capacitance electricity has consumed, otherwise card can reset.Negative carrier Using BPSK modulation techniques, TYPEB reduces the dry sound of signal of 6dB compared with TYPEA schemes, and antijamming capability is stronger.
The course of work of wireless near field communication card-reading system will be described in detail below:
When NFC target devices 701 are close to NFC antenna 101, NFC antenna 101 receives NFC target devices 701 and sends first Initial data, then RF front-end module 102 signal type of initial data is converted into digital signal by analog signal, so The initial data of the signal type for digital signal is carried out protocol communication processing, last processor 104 by radio-frequency module 103 afterwards By protocol communication, treated that initial data is decoded, and obtains decoding data.
Structure and the course of work are included for the NFC card-reading apparatus 702 in the second embodiment of the application, herein not It repeats again.
Based on same inventive concept, third embodiment of the invention provides a kind of wireless near field communication remote data transmission system System, as shown in figure 8, NFC card-reading apparatus 702 including long-range receiving device 703 and as in the first embodiment.
For long-range receiving device 703, long-range receiving device 703 can be computer, mobile phone or other tools There is the electronic equipment of information receiving ability and presentation of information ability, remote device can be right after decoding data is received Decoding data is shown.Preferably, long-range receiving terminal includes wireless communication module, and wireless communication module is read for receiving NFC The decoding data that card apparatus 702 is sent, wireless communication module are ZigBee communication module.
The course of work of wireless near field communication remote data transmission system will be described in detail below:
NFC antenna 101 receives the initial data that NFC target devices 701 are sent first, and then RF front-end module 102 will The signal type of initial data is converted into digital signal by analog signal, and then radio-frequency module 103 believes signal type for number Number the initial data carry out protocol communication processing, then processor 104 carries out protocol communication treated initial data Decoding obtains decoding data, and finally, decoding data is sent to long-range reception by the ZigBee communication module of NFC card-reading apparatus 702 ZigBee communication module in end equipment 703, long-range receiving device 703 after decoding data is obtained can to decoding data into Row parsing display.
Based on same inventive concept, fourth embodiment of the invention provides a kind of wireless near field communication card-reading system, such as Fig. 9 It is shown, including NFC target devices 701, long-range receiving device 703 and NFC card-reading apparatus 702 as in the first embodiment.
First embodiment, second embodiment and are referred to for the course of work of wireless near field communication card-reading system Explanation in three embodiments, details are not described herein again.
In short, wireless near field communication card-reading apparatus according to the present invention, wireless near field communication card-reading system, closely Remote data transmission system and short-distance wireless communication system are wirelessly communicated, NFC card-reading apparatus includes NFC antenna, radio-frequency front-end Module, radio-frequency module and processor, NFC antenna are arranged on RF front-end module, and RF front-end module is connect with radio-frequency module, Processor is connect with radio-frequency module, wherein, NFC antenna is used to receive the initial data of NFC target devices transmission, radio-frequency front-end mould Block is used to the signal type of initial data being converted into digital signal by analog signal, and it is number that radio-frequency module, which is used for signal type, The initial data of word signal carries out protocol communication processing, and processor is used for that treated that initial data solves by protocol communication Code, obtains decoding data, and the present invention can be improved by the use of the antenna that closed shape is formed by copper wire winding as NFC antenna The antenna performance of NFC antenna so as to enhance the effect that NFC card-reading apparatus reads signal, improves the reading of NFC card-reading apparatus Distance.
Algorithm and display be not inherently related to any certain computer, virtual system or miscellaneous equipment provided herein. Various general-purpose systems can also be used together with teaching based on this.As described above, required by constructing this kind of system Structure be obvious.In addition, the present invention is not also directed to any certain programmed language.It should be understood that it can utilize various Programming language realizes the content of invention described herein, and the description done above to language-specific is to disclose this hair Bright preferred forms.
In the specification provided in this place, numerous specific details are set forth.It is to be appreciated, however, that the implementation of the present invention Example can be put into practice without these specific details.In some instances, well known method, structure is not been shown in detail And technology, so as not to obscure the understanding of this description.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of each inventive aspect, Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention:I.e. required guarantor Shield the present invention claims the more features of feature than being expressly recited in each claim.More precisely, as following Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore, Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim is in itself Separate embodiments all as the present invention.
Those skilled in the art, which are appreciated that, to carry out adaptively the module in the equipment in embodiment Change and they are arranged in one or more equipment different from the embodiment.It can be the module or list in embodiment Member or component be combined into a module or unit or component and can be divided into addition multiple submodule or subelement or Sub-component.Other than such feature and/or at least some of process or unit exclude each other, it may be used any Combination is disclosed to all features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so to appoint Where all processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification is (including adjoint power Profit requirement, abstract and attached drawing) disclosed in each feature can be by providing the alternative features of identical, equivalent or similar purpose come generation It replaces.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments In included certain features rather than other feature, but the combination of the feature of different embodiments means in of the invention Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed is appointed One of meaning mode can use in any combination.
The all parts embodiment of the present invention can be with hardware realization or to be run on one or more processor Software module realize or realized with combination thereof.It will be understood by those of skill in the art that it can use in practice Microprocessor or digital signal processor (DSP) are come one of some or all components in realizing according to embodiments of the present invention A little or repertoire.The present invention is also implemented as setting for performing some or all of method as described herein Standby or program of device (for example, computer program and computer program product).Such program for realizing the present invention can deposit Store up on a computer-readable medium or can have the form of one or more signal.Such signal can be from because of spy It is downloaded on net website and obtains either providing on carrier signal or providing in the form of any other.
It should be noted that the present invention will be described rather than limits the invention, and ability for above-described embodiment Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.In the claims, Any reference mark between bracket should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not Element or step listed in the claims.Word "a" or "an" before element does not exclude the presence of multiple such Element.The present invention can be by means of including the hardware of several different elements and being come by means of properly programmed computer real It is existing.If in the unit claim for listing equipment for drying, several in these devices can be by same hardware branch To embody.The use of word first, second, and third does not indicate that any sequence.These words can be explained and run after fame Claim.
A1, a kind of wireless near field communication card-reading apparatus, which is characterized in that including wireless near field communication (NFC) antenna, RF front-end module, radio-frequency module and processor;The NFC antenna is that the antenna of closed shape is formed by copper wire winding,;Institute NFC antenna is stated to be arranged on the RF front-end module;The RF front-end module is connect with the radio-frequency module;The processing Device is connect with the radio-frequency module;Wherein:
The NFC antenna is used to receive the initial data of NFC target devices transmission, and the RF front-end module is used for institute The signal type for stating initial data is converted into digital signal by analog signal, and the radio-frequency module is used for the radio-frequency front-end mould The signal type of block output carries out protocol communication processing for the initial data of digital signal, and the processor is used for by described in Processor output through protocol communication, treated that the initial data is decoded, obtain decoding data.
A2, the wireless near field communication card-reading apparatus according to A1, which is characterized in that the area model of the NFC antenna It encloses for 50~100cm2
A3, the wireless near field communication card-reading apparatus according to A1, which is characterized in that the closed shape is rectangle It is or round.
A4, the wireless near field communication card-reading apparatus according to A1, which is characterized in that further include wireless communication module;
The wireless communication module is connected to the processor, the wireless communication module be used for by the decoding data without Line is transferred to long-range receiving device.
A5, the wireless near field communication card-reading apparatus according to A4, which is characterized in that the wireless communication module is ZigBee communication module.
A6, the wireless near field communication card-reading apparatus according to A1, which is characterized in that the processor is embedded in for ARM Formula processor.
A7, the wireless near field communication card-reading apparatus according to A1, which is characterized in that built-in power supply is further included, The built-in power supply provides electric energy for the wireless near field communication card-reading apparatus.
A8, the wireless near field communication card-reading apparatus according to A7, which is characterized in that further include power source charges module;
The power source charges module is connect with the built-in power supply, and the power source charges module is used for described built-in Power supply charges.
A9, the wireless near field communication card-reading apparatus according to A8, which is characterized in that the power source charges module is filled Electrical interface is universal serial bus (USB) interface.
B10, a kind of wireless near field communication card-reading system, which is characterized in that including NFC target devices and according to A1-A9 Any one of described in wireless near field communication card-reading apparatus.
C11, a kind of wireless near field communication remote data transmission system, which is characterized in that including long-range receiving device With the wireless near field communication card-reading apparatus according to any one of A1-A9.
C12, the wireless near field communication remote data transmission system according to C11, which is characterized in that described remotely to connect Receiving end equipment includes wireless communication module, and the wireless communication module is sent out for receiving the wireless near field communication card-reading apparatus The decoding data sent.
C13, the wireless near field communication remote data transmission system according to C12, which is characterized in that the channel radio Letter module is ZigBee communication module.
D14, a kind of short-distance wireless communication system, which is characterized in that including NFC target devices, long-range receiving device With the wireless near field communication card-reading apparatus according to any one of A1-A9.

Claims (10)

1. a kind of wireless near field communication card-reading apparatus, which is characterized in that including wireless near field communication (NFC) antenna, radio frequency Front-end module, radio-frequency module and processor;The NFC antenna is that the antenna of closed shape is formed by copper wire winding,;It is described NFC antenna is arranged on the RF front-end module;The RF front-end module is connect with the radio-frequency module;The processor It is connect with the radio-frequency module;Wherein:
The NFC antenna is used to receive the initial data of NFC target devices transmission, and the RF front-end module is used for the original The signal type of beginning data is converted into digital signal by analog signal, and the radio-frequency module is used for the RF front-end module is defeated The signal type gone out carries out protocol communication processing for the initial data of digital signal, and the processor is used for the processing Device output through protocol communication, treated that the initial data is decoded, obtain decoding data.
2. wireless near field communication card-reading apparatus as described in claim 1, which is characterized in that the area model of the NFC antenna It encloses for 50~100cm2
3. wireless near field communication card-reading apparatus as described in claim 1, which is characterized in that the closed shape is rectangle It is or round.
4. wireless near field communication card-reading apparatus as described in claim 1, which is characterized in that further include wireless communication module;
The wireless communication module is connected to the processor, and the wireless communication module is used to wirelessly pass the decoding data It is defeated by long-range receiving device.
5. wireless near field communication card-reading apparatus as claimed in claim 4, which is characterized in that the wireless communication module is ZigBee communication module.
6. wireless near field communication card-reading apparatus as described in claim 1, which is characterized in that the processor is embedded in for ARM Formula processor.
7. wireless near field communication card-reading apparatus as described in claim 1, which is characterized in that built-in power supply is further included, The built-in power supply provides electric energy for the wireless near field communication card-reading apparatus.
8. a kind of wireless near field communication card-reading system, which is characterized in that including NFC target devices and as in claim 1-7 Wireless near field communication card-reading apparatus described in any claim.
9. a kind of wireless near field communication remote data transmission system, which is characterized in that including long-range receiving device and as weighed Profit requires the wireless near field communication card-reading apparatus described in any claim in 1-7.
10. a kind of short-distance wireless communication system, which is characterized in that including NFC target devices, long-range receiving device and as weighed Profit requires the wireless near field communication card-reading apparatus described in any claim in 1-7.
CN201711499069.3A 2017-12-29 2017-12-29 Wireless near field communication card-reading apparatus and system Pending CN108197516A (en)

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Application publication date: 20180622