CN206807452U - The NFC communication device that a kind of multiclass identifies safely - Google Patents
The NFC communication device that a kind of multiclass identifies safely Download PDFInfo
- Publication number
- CN206807452U CN206807452U CN201720714421.XU CN201720714421U CN206807452U CN 206807452 U CN206807452 U CN 206807452U CN 201720714421 U CN201720714421 U CN 201720714421U CN 206807452 U CN206807452 U CN 206807452U
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- China
- Prior art keywords
- nfc
- information
- data processing
- coil
- module
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
It the utility model is related to the NFC communication device that a kind of multiclass identifies safely, there is provided one kind can carry out one-to-many command recognition control, and the NFC communication device that safety coefficient is high.NFC device of the present utility model includes antenna-matching circuit, security module, command recognition module, data processing circuit；NFC device is identified command recognition module, and identification information is sent into data processing circuit；Security module is used to identify NFC device security information, forbids transmitting NFC information if identification information is not inconsistent, and will allow to transmit NFC information if information is coincide to antenna-matching circuit；Antenna-matching circuit carries out command information with data processing circuit and exchanged, and data processing circuit receives identification information and to being sent after identification information processing to host device.
Description
Technical field
The utility model belongs near field communication technology field, is related to the NFC communication device that a kind of multiclass identifies safely.
Background technology
NFC (Near Field Communication, close range wireless communication or near-field communication) technology is by Philip
Company and Sony joint development.NFC is a kind of non contact angle measurement and interconnection technique, can be in mobile device, consumption
Electronic product, computer and smart control Tool Room carry out wireless near field communication.In order to promote NFC development and popularization,
Industry creates a non-profit-making normal structure --- NFC Forum, for promoting the implementation and standardization of NFC technique,
Ensure cooperative cooperating between equipment and service.
In recent years, with the development of mobile Internet, the mobile device using smart mobile phone as representative, because its is easy to carry,
The features such as application extension is versatile and flexible, turn into more and more important information interactive terminal.Mobile device is to closely interconnection technique
Demand cause NFC technique to have found its suitable application platform, NFC technique is a kind of short-range high-frequency wireless communication skill
Art, it is allowed to contactless Point-to-Point Data Transmission (in ten centimetres) is carried out between electronic equipment and exchanges data；Existing NFC controls
Module includes NFC recognition module and control module, and after NFC recognition module is connected with control module, control module is entered with terminal
Row connection, as long as at this time closely brushing nfc card once in NFC recognition module, you can control terminal by control module
Corresponding operating is carried out, but is found in use, its function is controlled for a kind of order, such as door opening action etc., and
And time period can not be set so as to cause safety coefficient relatively low.
Utility model content
In view of this, the purpose of this utility model is that one-to-many command recognition control can be carried out by providing one kind, and pacifies
The high NFC communication device of overall coefficient.
To reach above-mentioned purpose, the utility model provides following technical scheme：
The NFC communication device that a kind of multiclass identifies safely, the NFC communication device that the multiclass identifies safely and outside master
Machine equipment connects, and the NFC communication device that the multiclass identifies safely includes antenna-matching circuit, security module, command recognition mould
Block, data processing circuit；NFC device is identified command recognition module, and identification information is sent into data processing circuit,
Corresponding operating is carried out by data processing circuit；Security module is used for the security information for identifying NFC device, if identification information is not inconsistent
Forbid transmitting NFC information, will allow to transmit NFC information if information is coincide to antenna-matching circuit；The antenna-matching circuit
Including receives link, modulation link, coil；The receives link is coupled to receive institute by the coil and external device coil
The request signal of external device transmission is stated, and the data processing circuit is transferred to after the request signal is demodulated；The number
Coupled according to link is modulated described in processing circuit controls by the coil with the coil of the external device, to the external device
Send answer signal corresponding with the request signal；The receives link includes Schmidt's comparator, the level being sequentially connected in series
Conversion equipment and demodulating equipment；The other end of Schmidt's comparator electrically connects with the first end of the coil；The modulation
Link includes modulating device, current conversion module and the current-amplifying device being sequentially connected in series；The current conversion module is used for will
The modulated current signal of default size is converted to by the modulated voltage signal of the modulating device；The current-amplifying device is used
It is amplified in by the current signal；Other ends of the current-amplifying device electrically connect with the coil；The antenna
It is connected with circuit output end with data processing circuit input, data processing circuit receives identification information and to identification information processing
After send to host device；
The receives link also includes amplification module, and the amplification module includes first switch and amplifier group；Described
One switch is in parallel with the amplifier group, and the first end of the first switch electrically connects with the first end of the coil, and described the
Second end of one switch electrically connects with Schmidt's comparator；Schmidt's comparator passes through the first switch or described
Amplifier group electrically connects with the first end of the coil；
The amplifier that the amplifier group includes an amplifier or two or more is in parallel, each amplifier have
One default multiplication factor scope, and the multiplication factor scope of each amplifier is not overlapping.
Further, the command recognition module is gesture information identification module, the gesture information sent for identifying user.
Further, the security module is the P5CD081 cores integrated on the NFC communication device mainboard that multiclass identifies safely
Piece.
Further, the second security module to match with the security module, the peace are additionally provided with the NFC device
Full module is used for the information for detecting second security module.
The beneficial effects of the utility model are：The NFC communication identified safely by multiclass described in the utility model fills
Put, one-to-many command recognition control can be reached and can realize that the period is set, while add the identification process of security module,
Its safety coefficient is further enhancing, while the NFC communication device that multiclass described in the utility model identifies safely is using less
Electronic component, you can complete to external device send request signal demodulation modulate, save cost.
Brief description of the drawings
In order that the purpose of this utility model, technical scheme and beneficial effect are clearer, the utility model provides as follows
Accompanying drawing illustrates：
Fig. 1 realizes block diagram to be of the present utility model；
Fig. 2 is antenna-matching circuit of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
Fig. 1 is that the utility model realizes block diagram, the NFC communication device that multiclass described in the utility model identifies safely with it is outer
The host device connection in portion, NFC device include antenna-matching circuit, security module, command recognition module, data processing circuit；
NFC device is identified command recognition module, and command recognition module is gesture information identification module, by NFC device
The gesture information that user sends is identified, and identification information is sent into data processing circuit, is carried out by data processing circuit
Corresponding operating；Security module is used for the information for identifying the second security module in NFC device, forbids passing if identification information is not inconsistent
Defeated NFC information, it will allow to transmit NFC information if information is coincide to antenna-matching circuit；Antenna-matching circuit and data processing
Circuit carries out data command information exchange, and data processing circuit receives identification information and to being sent after identification information processing to main frame
Equipment.
Fig. 2 is antenna-matching circuit of the present utility model, including receives link, modulation link, coil L.Receives link is led to
Coil L and external device the coil request signal for being coupled to receive external device and sending are crossed, and is conveyed after request signal is demodulated
To data processing circuit.Data processing circuit control modulation link is coupled by coil L with the coil of external device, is outwardly set
Preparation send response corresponding with request signal to believe.
Specifically, receives link includes Schmidt's comparator, level converter and the demodulating equipment being sequentially connected in series.Shi Mi
Special comparator one end electrically connects with the input of level converter, and the other end electrically connects with coil L first end.
Modulation link includes modulating device, current conversion module and the current-amplifying device being sequentially connected in series.Electric current modulus of conversion
Block is used for the modulated current signal that the modulated voltage signal through over-modulating device is converted to default size.Current-amplifying device is used
It is amplified in by modulated current signal.One end of current-amplifying device electrically connects with the output end of current conversion module, other
End electrically connects with coil L.
When receiving the request signal that external device is sent, modulation link is idle, or perhaps modulates dynamics and be
Zero.Now, the working condition of receives link is as follows：The coil L request signals received are processed into height by Schmidt's comparator
The data signal of level；Level converter is by the Digital Signal Processing after the processing of Schmidt's comparator at suitable demodulating equipment
The data signal of reason；Digital demodulation signal after demodulating equipment handles level converter goes out the information that external device is sent.
After the request signal of external device transmission has been received, data processing circuit control modulation link is started working：Adjust
Device processed exports modulated voltage signal according to the control of data processing circuit；Current conversion module will
The modulated voltage signal that modulating device is sent is converted into modulated current signal；Current-amplifying device will modulate electric current letter
Number amplification after generate modulation intelligence, coupled by coil L with the coil of external device, modulation intelligence passed into external device.
Receives link includes Schmidt's comparator, level converter and demodulating equipment, modulation link include modulating device,
Current conversion module and current-amplifying device, using less electronic component, you can complete to believe the request that external device is sent
Number demodulation modulation, save cost.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent
The utility model has been described in detail by above preferred embodiment for pipe, but those skilled in the art should manage
Solution, can make various changes, without departing from the utility model claims book institute to it in the form and details
The scope of restriction.
Claims (4)
- A kind of 1. NFC communication device that multiclass identifies safely, it is characterised in that the NFC communication device that the multiclass identifies safely It is connected with the host device of outside, the NFC communication device that the multiclass identifies safely includes antenna-matching circuit, security module, Command recognition module, data processing circuit；NFC device is identified command recognition module, and identification information is sent into data processing circuit, by data processing electricity Road carries out corresponding operating；Security module is used for the security information for identifying NFC device, forbids transmitting NFC if identification information is not inconsistent Information, it will allow to transmit NFC information if information is coincide to antenna-matching circuit；The antenna-matching circuit includes receives link, modulation link, coil；The receives link passes through the coil and the external world The request signal for being coupled to receive the external device and sending of equipment coil, and be transferred to after the request signal is demodulated described Data processing circuit；The data processing circuit control modulation link passes through the coil and the coil of the external device Coupling, answer signal corresponding with the request signal is sent to the external device；The receives link includes being sequentially connected in series Schmidt's comparator, level converter and demodulating equipment；The of the other end of Schmidt's comparator and the coil One end electrically connects；The modulation link includes modulating device, current conversion module and the current-amplifying device being sequentially connected in series；It is described Current conversion module is used for the modulated current signal that the modulated voltage signal by the modulating device is converted to default size； The current-amplifying device is used to the current signal being amplified；Other ends of the current-amplifying device and the coil Electrical connection；The antenna-matching circuit output end is connected with data processing circuit input, and data processing circuit receives identification letter Cease and to being sent after identification information processing to host device；The receives link also includes amplification module, and the amplification module includes first switch and amplifier group；Described first opens Pass is in parallel with the amplifier group, and the first end of the first switch electrically connects with the first end of the coil, and described first opens The second end closed electrically connects with Schmidt's comparator；Schmidt's comparator passes through the first switch or the amplification Device group electrically connects with the first end of the coil；The amplifier that the amplifier group includes an amplifier or two or more is in parallel, each amplifier have one Default multiplication factor scope, and the multiplication factor scope of each amplifier is not overlapping.
- 2. the NFC communication device that multiclass according to claim 1 identifies safely, it is characterised in that：The command recognition mould Block is gesture information identification module, the gesture information sent for identifying user.
- 3. the NFC communication device that multiclass according to claim 1 identifies safely, it is characterised in that：The security module is The P5CD081 chips integrated on the NFC communication device mainboard that the multiclass identifies safely.
- 4. the NFC communication device that multiclass according to claim 1 identifies safely, it is characterised in that：In the NFC device also The second security module to match with the security module is provided with, the security module is used to detect second security module Information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720714421.XU CN206807452U (en) | 2017-06-19 | 2017-06-19 | The NFC communication device that a kind of multiclass identifies safely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720714421.XU CN206807452U (en) | 2017-06-19 | 2017-06-19 | The NFC communication device that a kind of multiclass identifies safely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206807452U true CN206807452U (en) | 2017-12-26 |
Family
ID=60747819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720714421.XU Expired - Fee Related CN206807452U (en) | 2017-06-19 | 2017-06-19 | The NFC communication device that a kind of multiclass identifies safely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206807452U (en) |
-
2017
- 2017-06-19 CN CN201720714421.XU patent/CN206807452U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20180619 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |