CN101826895A - NFC-based data acquisition method, NFC electronic terminal and system - Google Patents
NFC-based data acquisition method, NFC electronic terminal and system Download PDFInfo
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- CN101826895A CN101826895A CN201010125953A CN201010125953A CN101826895A CN 101826895 A CN101826895 A CN 101826895A CN 201010125953 A CN201010125953 A CN 201010125953A CN 201010125953 A CN201010125953 A CN 201010125953A CN 101826895 A CN101826895 A CN 101826895A
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Abstract
The embodiment of the invention discloses a near field communication-based (NFC) data acquisition method. The method comprises the following steps of: activating the NFC function of an opposite NFC electronic terminal through an NFC antenna by using the near field communication technology, wherein the opposite NFC electronic terminal is in a power-off state; establishing connection with the NFC of the opposite NFC electronic terminal; and acquiring the data stored by the opposite NFC electronic terminal through the NFC. Accordingly, the embodiment of the invention also discloses an NFC electronic terminal and an NFC-based data acquisition system. By implementing the embodiment of the invention, the NFC electronic terminal activates the NFC function of the NFC electronic terminal in the power-off state through the NFC, so that the NFC electronic terminal can also acquire the stored data during power failure; therefore, the data acquisition method, the electronic terminal and the data acquisition system solve the problem of incapability of timely acquiring the data stored in the NFC electronic terminal due to the power failure of the NFC electronic terminal, improve the application function of the NFC technology and bring convenience to the user to timely look up and exchange the data.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of data capture method, NFC electric terminal and system based on NFC.
Background technology
Near Field Communication (NFC, Near Field Communication) technology is a kind of non-contact radio-frequency identification RFID and the interconnection technique that is derived between wireless device, the radio-frequency technique that the NFC technology is mainly moved based on the 13.56MHz frequency, the range ability scope is in 20 centimetres, data transmission bauds can be selected 106Kbit/s, 212Kbit/s or 424Kbit/s, and it provides a communication modes very easily for all consumption electronic products.
Current, the NFC technology is mainly used in gate control system, label is followed the tracks of, ticketing service, public transport is paid by mails or the like, be function use be partial to and operator between expense authentication problem, along with the continuous development of science and technology, the NFC technology will be developed fast, and how using the NFC technology is the hot issue that people study always for the user provides more strong application.
Summary of the invention
The embodiment of the invention is to provide a kind of data capture method based on NFC, a kind of NFC electric terminal and a kind of data-acquisition system based on NFC, activate the NFC function of the NFC electric terminal that is in power down state by NFC, also can obtain the data of this storage when having realized the power down of NFC electric terminal, be convenient to that the user searches and swap data.
In order to reach above-mentioned technique effect, the embodiment of the invention has proposed a kind of data capture method based on NFC, comprising:
Utilize the Near Field Communication technology to activate the NFC function of opposite end NFC electric terminal by the NFC antenna, described opposite end NFC electric terminal is in power down state;
Set up and be connected with the NFC of described opposite end NFC electric terminal;
Obtain the data of described opposite end NFC electric terminal storage by NFC.
Preferably, the described step that activates the NFC function of opposite end NFC electric terminal by the NFC antenna comprises:
By NFC days alignment opposite end NFC electric terminal transmitting powers;
Described opposite end NFC electric terminal utilizes described power to produce stabilized voltage power supply, utilizes described stabilized voltage power supply to start the NFC function.
Preferably, the step of obtaining the data of described opposite end NFC electric terminal storage by NFC comprises:
Local terminal NFC electric terminal sends to opposite end NFC electric terminal by NFC and obtains request of data;
Described opposite end NFC electric terminal utilizes described stabilized voltage power supply to obtain the data that request of data is searched storage according to described, and returns to local terminal NFC electric terminal by NFC and to find out data.
Preferably, described opposite end NFC electric terminal utilizes described stabilized voltage power supply to search the step of the data of storage and comprise according to the described request of data of obtaining:
Opposite end NFC electric terminal utilizes described stabilized voltage power supply to send the checking request by NFC to local terminal NFC electric terminal;
Local terminal NFC electric terminal is according to the described checking request that receives, and the NFC electric terminal returns authorization information to the opposite end;
Opposite end NFC electric terminal utilizes described stabilized voltage power supply after receiving the authorization information that local terminal NFC electric terminal returns, and carries out authentication verification according to described authorization information, if by after the authentication verification, obtains the data that request of data is searched storage according to described.
Correspondingly, the embodiment of the invention discloses a kind of NFC electric terminal, comprising:
The NFC antenna is used to receive the NFC antenna emitted power of opposite end NFC electric terminal;
The stabilized voltage power supply generation module, the power that is used to utilize described NFC antenna to receive produces stabilized voltage power supply;
The NFC functional module is used to utilize described stabilized voltage power supply, sets up by described NFC antenna to be connected with the NFC of opposite end NFC electric terminal, sends data to described opposite end NFC electric terminal.
Preferably, described NFC functional module comprises:
Obtain the request receiving element, be used for receiving the request of data of obtaining of described opposite end NFC electric terminal transmission by described NFC antenna;
Data searching unit is used to utilize described stabilized voltage power supply, obtains the data that request of data is searched storage according to described;
Data transmission unit, the data that are used for described data searching unit is found out are given opposite end NFC electric terminal by described NFC antenna transmission.
Preferably, described NFC functional module also comprises:
The checking request transmitting unit, be used for when described obtain the request receiving element receive obtain request of data after, send the checking request by the described opposite end of described NFC days alignment NFC electric terminal;
The authorization information receiving element is used for receiving the authorization information that described opposite end NFC electric terminal returns by described NFC antenna;
The authentication verification unit is used for carrying out authentication verification according to described authorization information, when by after the authentication verification, triggers described data searching unit and searches.
Preferably, described NFC days alignment is in the NFC electric terminal transmitting power of power down state, makes the described NFC electric terminal that is in power down state utilize described power to produce stabilized voltage power supply, starts the NFC function;
Described NFC electric terminal also comprises:
Data acquisition module is used for obtaining the described data that are in the NFC electric terminal storage of power down state by described NFC antenna.
Preferably, described data acquisition module comprises:
Obtain request transmitting unit, be used for obtaining request of data by the described NFC electric terminal transmission that is in power down state of described NFC days alignment;
The Data Receiving unit, be used for receiving the data that the described NFC electric terminal that is in power down state returns by NFC by described NFC antenna, the described data of returning are that the described NFC electric terminal that is in power down state utilizes described stabilized voltage power supply to obtain the data that request of data finds out according to described.
Preferably, described NFC electric terminal also comprises:
Checking request receiver module is used for receiving the checking request that the described NFC electric terminal that is in power down state sends by described NFC antenna;
The authorization information sending module is used for according to described checking request, returns authorization information by the described NFC electric terminal that is in power down state of described NFC days alignment.
Correspondingly, the embodiment of the invention discloses a kind of data-acquisition system, comprise at least two above-mentioned NFC electric terminals based on NFC.
Preferably, described NFC electric terminal comprises mobile phone, personal digital assistant (PDA, PersonalDigital Assistant) or notebook computer etc.
Implement the embodiment of the invention, the NFC electric terminal activates the NFC function of the NFC electric terminal that is in power down state by NFC, also can obtain the data of this storage when having realized the power down of NFC electric terminal, solved owing to can't in time obtain the problem of the data of this NFC electric terminal stored after the power down of NFC electric terminal, improved NFC The Application of Technology function, be convenient to the user and in time search and swap data.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the embodiment of the invention based on the data capture method of NFC;
Fig. 2 is the principle assumption diagram that the NFC electric terminal of the embodiment of the invention produces stabilized voltage power supply;
Fig. 3 is the schematic diagram of coil current of the present invention, capacitance voltage, output voltage and corresponding time relationship;
Fig. 4 is the structural representation based on the data-acquisition system of NFC of the embodiment of the invention;
Fig. 5 is the structural representation of the NFC electric terminal of the embodiment of the invention;
Fig. 6 is the structural representation of the NFC functional module of the embodiment of the invention;
Fig. 7 is the structural representation of another embodiment of NFC electric terminal of the present invention.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.
See also the schematic flow sheet of the embodiment of the invention shown in Fig. 1, comprising based on the data capture method of NFC:
Step S101: utilize the Near Field Communication technology to activate the NFC function of opposite end NFC electric terminal by the NFC antenna;
Particularly, described opposite end NFC electric terminal is in power down state (being power-down state), local terminal NFC electric terminal can pass through NFC days alignment opposite end NFC electric terminal transmitting powers, described opposite end NFC electric terminal utilizes described power to produce stabilized voltage power supply, utilizes described stabilized voltage power supply to start the NFC function.
Step S102: foundation is connected with the NFC of described opposite end NFC electric terminal;
Particularly, local terminal NFC electric terminal can connect by the NFC antenna of NFC antenna and opposite end NFC electric terminal.
Step S103: the data of obtaining the NFC electric terminal storage of described opposite end by NFC.
Particularly, local terminal NFC electric terminal can send to opposite end NFC electric terminal by NFC earlier and obtain request of data, this obtains request of data and has comprised the data type that need search, search the contact data of opposite end storage as needs, or the E-mail stored data etc., described opposite end NFC electric terminal receives after this obtains request of data, utilizes described stabilized voltage power supply to obtain the data that request of data is searched storage according to described, and returns the data that find out by NFC to local terminal NFC electric terminal.
Further, produce the principle assumption diagram of stabilized voltage power supply in conjunction with NFC electric terminal as shown in Figure 2, illustrating opposite end NFC electric terminal among the step S101 utilizes described power to produce the process of stabilized voltage power supply, but be not limited to principle assumption diagram shown in Figure 2, as long as can realize utilizing described power to produce stabilized voltage power supply.The NFC antenna is the antenna of " coil " pattern, and in the time of another antenna transmission power, the coil of NFC antenna can produce induced current, because induced current is connected with charging capacitor, this moment, electric capacity can charge, and induced current is converted to voltage, and voltage is held and raises gradually.The charging capacitor rear end connects energy storage inductor, because the characteristic of inductance is to be magnetic field energy with the power conversion of electric current, so energy is stored, the energy storage inductor rear end connects diode, because the unidirectional on state characteristic of diode has guaranteed that electric current can only flow to linear voltage stabilization source LDO, this moment, LDO was powered, the characteristic of LDO is to need only input voltage on effective thresholding, and LDO is exportable stable voltage; When coil no longer obtains extraneous power, because electric current is in the one-way flow characteristic of inductance inside, the magnetic energy of inductance is converted into electric energy, and also there is a big capacity storage capacitor diode rear end, voltage is exported to LDO continuously, the voltage that this moment, charging capacitor stored also slowly discharges, so electric current is continued to input to LDO via diode, guaranteed the stable power-supplying of rear end, coil current as shown in Figure 3, capacitance voltage, LDO output voltage and time t corresponding relation, the coordinate transverse axis is represented the time, vertical axis represents current or voltage, and the voltage of LDO output operates for modules such as NFC functional modules.
Again further, can also comprise among the step S103: described opposite end NFC electric terminal receives after this obtains request of data, utilize described stabilized voltage power supply to send the checking request to local terminal NFC electric terminal by NFC, local terminal NFC electric terminal is according to the described checking request that receives, the NFC electric terminal returns authorization information to the opposite end, after NFC electric terminal in opposite end receives the authorization information that local terminal NFC electric terminal returns then, utilize described stabilized voltage power supply, carry out authentication verification according to described authorization information, if by after the authentication verification, just carry out according to described and obtain the step that request of data is searched the data of storage, if authentication verification do not pass through, do not carry out so according to described and obtain the step that request of data is searched the data of storage.Particularly, described checking request can be for requiring a password of local terminal NFC electric terminal input etc., local terminal NFC electric terminal sends authorization information (encrypted message) to opposite end NFC electric terminal, after opposite end NFC electric terminal receives the information that authorization information is a password, this password is carried out authentication verification, if the password that receives is consistent with preset password, then pass through authentication verification, if the password and the preset password that receive are inconsistent, then authentication verification is not passed through, and can send the information of failed authentication further to local terminal NFC electric terminal.
Need to prove, local terminal NFC electric terminal and opposite end NFC electric terminal can have the identical functions structure, when opposite end NFC electric terminal power down, but the user can search and obtain need promptly obtain the data of this storage the time by local terminal NFC electric terminal; These data can be stored in the storage medium of NFC electric terminal, and the storage medium as NAND FLASH etc. has memory function perhaps is stored in user identification module SIM or UIM etc.
Describe the schematic flow sheet of the data capture method that the present invention is based on NFC above in detail, below accordingly, describe the structure based on the data-acquisition system of NFC of the embodiment of the invention in detail.
The structural representation based on the data-acquisition system of NFC of the embodiment of the invention as shown in Figure 4, data-acquisition system based on NFC comprises at least two NFC electric terminals, present embodiment is to comprise that two NFC electric terminals are that example describes, be NFC electric terminal 41 and NFC electric terminal 42, NFC electric terminal 41 and NFC electric terminal 42 have the identical functions structure, after NFC electric terminal 42 power down (promptly being in power down state), NFC electric terminal 41 can activate the NFC function of NFC electric terminal 42, foundation is connected with the NFC of NFC electric terminal 41, and obtains the data of NFC electric terminal 42 storages.
Particularly, in conjunction with Fig. 5 to Fig. 7 the NFC electric terminal of the embodiment of the invention is described, as Fig. 5, NFC electric terminal 42 comprises NFC antenna 421, stabilized voltage power supply generation module 422 and NFC functional module 423, wherein
The power that stabilized voltage power supply generation module 422 is used to utilize NFC antenna 421 to receive produces stabilized voltage power supply;
NFC functional module 423 is used to utilize described stabilized voltage power supply, sets up by NFC antenna 421 to be connected with the NFC of opposite end NFC electric terminal, sends data to described opposite end NFC electric terminal.
Particularly, NFC electric terminal 42 is in power down state, NFC electric terminal 41 is in power opening state, NFC antenna 421 receives the NFC antenna emitted power of opposite end NFC electric terminal (being NFC electric terminal 41), stabilized voltage power supply generation module 422 can utilize the power generation stabilized voltage power supply that NFC antenna 421 receives so, for 423 runnings of NFC functional module; Stabilized voltage power supply generation module 422 can comprise charging capacitor, energy storage inductor, diode and linear voltage stabilization source LDO etc., but stabilized voltage power supply generation module 422 is not limited to this structure, as long as the power that can utilize NFC antenna 421 to receive produces stabilized voltage power supply, the process that stabilized voltage power supply generation module 422 produces stabilized voltage power supply can be consulted Fig. 2 and Fig. 3, and the foregoing description is described to Fig. 2 and Fig. 3, repeats no more here.
Further, as Fig. 6, NFC functional module 423 comprises the request of obtaining receiving element 4231, data searching unit 4232 and data transmission unit 4233, wherein
Obtain the request of data of obtaining that request receiving element 4231 is used for receiving by NFC antenna 421 the NFC electric terminal transmission of described opposite end; Particularly, opposite end NFC electric terminal (being NFC electric terminal 41) can send to NFC electric terminal 42 by NFC earlier and obtain request of data, this obtains request of data and has comprised the data type that need search, search the contact data of opposite end storage as needs, or E-mail stored data etc., obtain request receiving element 4231 and receive this and obtain request of data.
The data that data transmission unit 4233 is used for data searching unit 4232 is found out send to opposite end NFC electric terminal by NFC antenna 421;
Further, NFC functional module 423 can also comprise checking request transmitting unit 4234, authorization information receiving element 4235 and authentication verification unit 4236, wherein
Checking request transmitting unit 4234 be used for when obtain request receiving element 4231 receive obtain request of data after, send checking by NFC antenna 421 to described opposite end NFC electric terminal and ask; Particularly, described checking request can be for requiring a password of opposite end NFC electric terminal (being NFC electric terminal 41) input etc.
Authorization information receiving element 4235 is used for receiving the authorization information that described opposite end NFC electric terminal returns by NFC antenna 421; Particularly, after NFC electric terminal 41 receives the checking request, send authorization information to NFC electric terminal 42, as encrypted message, authorization information receiving element 4235 receives described authorization information by NFC antenna 421.
Need to prove that checking request transmitting unit 4234, authorization information receiving element 4235 and authentication verification unit 4236 can be integrated in the NFC functional module 423, also can be in independent the functional module existence and NFC electric terminal; The NFC electric terminal also comprises the storage medium (as NANDFLASH etc.) with memory function, and perhaps user identification module SIM or UIM etc. are used to store data.
Correspondingly, as Fig. 7, NFC electric terminal 41 comprises: NFC antenna 411 and data acquisition module 412, wherein,
Further, data acquisition module 412 can comprise and obtain request transmitting unit 4121 and Data Receiving unit 4122, wherein,
Obtaining request transmitting unit 4121 is used for obtaining request of data by NFC antenna 411 to the described NFC electric terminal transmission that is in power down state;
Again further, NFC electric terminal 41 can also comprise checking request receiver module 413 and authorization information sending module 414, wherein
Checking request receiver module 413 is used for receiving the checking request that the described NFC electric terminal that is in power down state sends by NFC antenna 411;
Authorization information sending module 414 is used for according to described checking request, returns authorization information by NFC antenna 411 to the described NFC electric terminal that is in power down state.
Need to prove, NFC electric terminal 41 and NFC electric terminal 42 have the identical functions structure, be that NFC electric terminal 42 also can comprise the functional module that NFC electric terminal 41 shown in Figure 7 comprises, NFC electric terminal 41 also can comprise the functional module that Fig. 5, NFC electric terminal 42 shown in Figure 6 comprise.
In sum, pass through the foregoing description, the NFC electric terminal activates the NFC function of the NFC electric terminal that is in power down state by NFC, also can obtain the data of this storage when having realized the power down of NFC electric terminal, solved owing to can't in time obtain the problem of the data of this NFC electric terminal stored after the power down of NFC electric terminal, improved NFC The Application of Technology function, be convenient to the user and in time search and swap data.
Need to prove that through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement by hardware.Based on such understanding, all or part of can the embodying that technical scheme of the present invention contributes to background technology with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
Above disclosed only is preferred embodiment in the embodiment of the invention, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (11)
1. the data capture method based on NFC is characterized in that, comprising:
Local terminal Near Field Communication NFC electric terminal utilizes the Near Field Communication technology to activate the NFC function of opposite end NFC electric terminal by the NFC antenna, and described opposite end NFC electric terminal is in power down state;
Set up and be connected with the NFC of described opposite end NFC electric terminal;
Obtain the data of described opposite end NFC electric terminal storage by NFC.
2. the method for claim 1 is characterized in that, the described step that activates the NFC function of opposite end NFC electric terminal by the NFC antenna comprises:
By NFC days alignment opposite end NFC electric terminal transmitting powers;
Described opposite end NFC electric terminal utilizes described power to produce stabilized voltage power supply, utilizes described stabilized voltage power supply to start the NFC function.
3. the method for claim 1 is characterized in that, the step of obtaining the data of described opposite end NFC electric terminal storage by NFC comprises:
Local terminal NFC electric terminal sends to opposite end NFC electric terminal by NFC and obtains request of data;
Described opposite end NFC electric terminal utilizes described stabilized voltage power supply to obtain the data that request of data is searched storage according to described, and returns the data that find out by NFC to local terminal NFC electric terminal.
4. method as claimed in claim 3 is characterized in that, described opposite end NFC electric terminal utilizes described stabilized voltage power supply to search the step of the data of storage and comprise according to the described request of data of obtaining:
Opposite end NFC electric terminal utilizes described stabilized voltage power supply to send the checking request by NFC to local terminal NFC electric terminal;
Local terminal NFC electric terminal is according to the described checking request that receives, and the NFC electric terminal returns authorization information to the opposite end;
Opposite end NFC electric terminal utilizes described stabilized voltage power supply after receiving the authorization information that local terminal NFC electric terminal returns, and carries out authentication verification according to described authorization information, if by after the authentication verification, obtains the data that request of data is searched storage according to described.
5. a NFC electric terminal is characterized in that, comprising:
The NFC antenna is used to receive the NFC antenna emitted power of opposite end NFC electric terminal;
The stabilized voltage power supply generation module, the power that is used to utilize described NFC antenna to receive produces stabilized voltage power supply;
The NFC functional module is used to utilize described stabilized voltage power supply, sets up by described NFC antenna to be connected with the NFC of opposite end NFC electric terminal, sends data to described opposite end NFC electric terminal.
6. NFC electric terminal as claimed in claim 5 is characterized in that, described NFC functional module comprises:
Obtain the request receiving element, be used for receiving the request of data of obtaining of described opposite end NFC electric terminal transmission by described NFC antenna;
Data searching unit is used to utilize described stabilized voltage power supply, obtains the data that request of data is searched storage according to described;
Data transmission unit, the data that are used for described data searching unit is found out are given opposite end NFC electric terminal by described NFC antenna transmission.
7. NFC electric terminal as claimed in claim 6 is characterized in that, described NFC functional module also comprises:
The checking request transmitting unit, be used for when described obtain the request receiving element receive obtain request of data after, send the checking request by the described opposite end of described NFC days alignment NFC electric terminal;
The authorization information receiving element is used for receiving the authorization information that described opposite end NFC electric terminal returns by described NFC antenna;
The authentication verification unit is used for carrying out authentication verification according to described authorization information, when by after the authentication verification, triggers described data searching unit and searches.
8. as each described NFC electric terminal of claim 5-7, it is characterized in that, described NFC days alignment is in the NFC electric terminal transmitting power of power down state, makes the described NFC electric terminal that is in power down state utilize described power to produce stabilized voltage power supply, starts the NFC function;
Described NFC electric terminal also comprises:
Data acquisition module is used for obtaining the described data that are in the NFC electric terminal storage of power down state by described NFC antenna.
9. NFC electric terminal as claimed in claim 8 is characterized in that, described data acquisition module comprises:
Obtain request transmitting unit, be used for obtaining request of data by the described NFC electric terminal transmission that is in power down state of described NFC days alignment;
The Data Receiving unit, be used for receiving the data that the described NFC electric terminal that is in power down state returns by NFC by described NFC antenna, the described data of returning are that the described NFC electric terminal that is in power down state utilizes described stabilized voltage power supply to obtain the data that request of data finds out according to described.
10. NFC electric terminal as claimed in claim 9 is characterized in that, described NFC electric terminal also comprises:
Checking request receiver module is used for receiving the checking request that the described NFC electric terminal that is in power down state sends by described NFC antenna;
The authorization information sending module is used for according to described checking request, returns authorization information by the described NFC electric terminal that is in power down state of described NFC days alignment.
11. the data-acquisition system based on NFC is characterized in that, comprises at least two NFC electric terminals, described NFC electric terminal is as each described NFC electric terminal of claim 5-10.
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Application publication date: 20100908 |