CN107179446A

CN107179446A - Capacitance determining method and device

Info

Publication number: CN107179446A
Application number: CN201710351621.8A
Authority: CN
Inventors: 张吉红; 黄柯清
Original assignee: Nasida Ltd By Share Ltd
Current assignee: Zhuhai Geehy Semiconductor Co Ltd
Priority date: 2017-05-18
Filing date: 2017-05-18
Publication date: 2017-09-19
Anticipated expiration: 2037-05-18
Also published as: CN107179446B

Abstract

The invention provides a kind of capacitance determining method and device.This method includes：Communicated according to capacitance detecting soft communication agreement with least one NFC smart card；Detect whether the electric capacity of at least one NFC smart card is qualified according to capacitance detecting soft communication agreement；Export the whether qualified testing result of the electric capacity of at least one NFC smart card.Due to carrying out whether communication mode is qualified come the electric capacity for detecting each NFC smart cards using with least one NFC smart card, so the mode for avoiding contact charging carries out the detection of electric capacity, operation is simplified.And the electric capacity of multiple NFC smart cards can be detected simultaneously, be adapted to the application for producing detection in enormous quantities.

Description

Capacitance determining method and device

Technical field

The present embodiments relate to electronic component detection technique field, more particularly to a kind of capacitance determining method and dress Put.

Background technology

NFC smartcard internals are integrated with the larger memory of CPU, capacity, and its power dissipation ratio is larger.When receiving NFC device After the carrier signal of transmission, NFC smart cards are obtained the modules that energy is NFC smart cards by rectified carrier and powered, with It is operated.But influenceed with being changed when NFC smart cards work by noise and load, carrier signal can be interfered and lead The situation of fluctuation occurs in the voltage for causing rectification to come out, and is powered so voltage stabilizing can not be carried out for NFC intelligent block-regulations, and then influence The job stability and communication distance of NFC smart cards.Figure 11 is the graph of a relation between the commutating voltage and carrier wave of NFC smart cards, As shown in figure 11, due to being influenceed by noise and load change, carrier signal, which can be interfered, causes the voltage of rectification to occur Fluctuation, it is impossible to carry out stable power-supplying, influences the work of NFC smart cards.

To solve the above problems, increasing generally between the DC power anode and negative pole or earth terminal of NFC intelligent card chips Plus electric capacity of voltage regulation avoids the situation of voltage pulsation.But produce NFC smart cards when, it is possible that capacitance damage, rosin joint or The wrong phenomenon of person, causes NFC smart cards after module or finished product card is sealed into, influences its service behaviour.

Detecting the electric capacity in NFC smart cards in the prior art, whether qualified method is before packaging by being carried out to electric capacity Charging, and calculates the charging interval, judges whether electric capacity is qualified according to the charging interval, if the charging interval is long or too short explanation electric capacity It is unqualified.This method needs the module individually to each NFC smart cards to carry out contact charging, and complex operation is not suitable for high-volume Produce the application of detection.

The content of the invention

The embodiment of the present invention provides a kind of capacitance determining method and device, solves existing capacitance measurement technique individually right The module of each NFC smart cards carries out contact charging, and complex operation is not suitable for producing in enormous quantities the application technology problem of detection.

The first aspect of the present invention provides a kind of capacitance determining method, including：

Communicated according to the capacitance detecting soft communication agreement with NFC smart cards at least one described；

Detect whether the electric capacity of at least one NFC smart card is qualified according to the capacitance detecting soft communication agreement；

Export the whether qualified testing result of the electric capacity of at least one NFC smart card.

The second aspect of the present invention provides a kind of capacitance detecting device, including：Device control module, and with described device control The connected NFC module for reading and writing of molding block, and output module；

The NFC module for reading and writing is used for：According to the capacitance detecting soft communication agreement and at least one described NFC intelligence Card is communicated；

Described device control module is used for：The NFC module for reading and writing is controlled according to the capacitance detecting soft communication agreement Communicated with NFC smart cards at least one described and detect whether the electric capacity of at least one NFC smart card is qualified；

The output module is used for：Export the whether qualified testing result of the electric capacity of at least one NFC smart card.

The third aspect of the present invention provides a kind of NFC smart cards, including：Intelligent card control module, and with the smart card Control module connected memory module and NFC antenna module；

The memory module is used for：Storage read-write communication protocol；

The NFC antenna module is used for：Communicated with capacitance detecting device；

The intelligent card control module is used for：According to the read-write communication protocol control NFC antenna module and capacitance detecting Device is communicated.

The embodiment of the present invention provides a kind of capacitance determining method and device, by according to capacitance detecting soft communication agreement with At least one NFC smart card is communicated；The electric capacity of at least one NFC smart card is detected according to capacitance detecting soft communication agreement It is whether qualified；Export the whether qualified testing result of the electric capacity of at least one NFC smart card.Due to using and at least one NFC Smart card carries out whether communication mode is qualified come the electric capacity for detecting each NFC smart cards, so avoiding the mode of contact charging The detection of electric capacity is carried out, operation is simplified.And the electric capacity of multiple NFC smart cards can be detected simultaneously, be adapted to high-volume Produce the application of detection.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with Other accompanying drawings are obtained according to these accompanying drawings.

Fig. 1 is the flow chart of capacitance determining method embodiment one of the present invention；

Fig. 2 is the flow chart of capacitance determining method embodiment two of the present invention；

Fig. 3 is the flow chart of capacitance determining method embodiment three of the present invention；

Fig. 4 is the flow chart of capacitance determining method example IV of the present invention；

Fig. 5 is the flow chart of capacitance determining method embodiment five of the present invention；

Fig. 6 is the flow chart of capacitance determining method embodiment six of the present invention；

Fig. 7 is the structural representation of capacitance detecting device embodiment one of the present invention；

Fig. 8 is the structural representation of capacitance detecting device embodiment two of the present invention；

Fig. 9 is the structural representation of NFC smartcard embodiments one of the present invention；

Figure 10 is the structural representation of NFC smartcard embodiments two of the present invention；

Figure 11 is the graph of a relation between the commutating voltage and carrier wave of NFC smart cards.

Embodiment

To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.

It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, represent There may be three kinds of relations, for example, A and/or B, can be represented：Individualism A, while there is A and B, individualism B these three Situation.In addition, character "/" herein, it is a kind of relation of "or" to typically represent forward-backward correlation object.

Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ... When " or " in response to determining " or " in response to detection ".Similarly, depending on linguistic context, phrase " if it is determined that " or " if detection (condition or event of statement) " can be construed to " when it is determined that when " or " in response to determine " or " when the detection (condition of statement Or event) when " or " in response to detection (condition or event of statement) ".

Fig. 1 is the flow chart of capacitance determining method embodiment one of the present invention, as shown in figure 1, provided in an embodiment of the present invention The executive agent of capacitance determining method is capacitance detecting device, and the capacitance detecting device can be with NFC communication function People's computer, personal digital assistant, radio hand-held equipment, tablet personal computer and mobile phone etc..It is provided with thereon for real with the present invention Apply application program or software that the capacitance determining method that example provided is engaged.The capacitance determining method bag that then the present embodiment is provided Include following steps.

Step 101, communicated according to capacitance detecting soft communication agreement with least one NFC smart card.

Step 102, detect whether the electric capacity of at least one NFC smart card is qualified according to capacitance detecting soft communication agreement.

Specifically, in the present embodiment, capacitance detecting software communication can be downloaded by the input interface of capacitance detecting device and assisted View.The capacitance detecting soft communication agreement can be the form of program.Carry out defined in the capacitance detecting soft communication agreement The principle and flow of at least one capacitance detecting.Capacitance detecting device can be completed by performing the capacitance detecting soft communication agreement The whether qualified detection of the electric capacity of at least one NFC smart card.

Illustrated with reference to step 101- steps 102.Specifically, in the present embodiment, according to the capacitance detecting software communication Agreement, makes capacitance detecting device while being communicated with least one NFC smart card.It is fixed in capacitance detecting soft communication agreement The duration and opportunity, i.e. capacitance detecting device that justice is communicated are not one when being communicated with least one NFC smart card Straight row communication is charged for NFC smart cards, but after communication a period of time, can be interrupted and be recovered communication after communication connection again Connection, makes the existing charging process of the electric capacity in NFC smart cards have discharge process again, to realize the electric capacity to each NFC smart cards Whether qualified detection.

In the present embodiment, when capacitance detecting device is communicated with least one NFC smart card, capacitance detecting device is to extremely A few NFC smart card sends carrier signal, NFC smart cards is received the circuit module that carrier signal is whole NFC smart cards It is powered, and corresponding capacitive sensing parameter is transferred to NFC smart cards.In capacitance detecting device and at least one NFC intelligence It can block and interrupt after communication, the electric capacity in each NFC smart cards is discharged, to ensure that the voltage in NFC smart cards keeps stable State.Interrupt after communication a period of time, capacitance detecting device sends carrier auxiliary communication to NFC smart cards again, in electric capacity inspection Survey device to receive after the carrier signal sent from NFC smart cards, decoding demodulation is carried out to carrier signal, obtained from carrier signal The corresponding parameter for carrying out capacitance detecting.And then judge correspondence according to the parameter of capacitance detecting is carried out in each NFC smart cards NFC smart cards electric capacity it is whether qualified.

Step 103, the whether qualified testing result of the electric capacity of at least one NFC smart card is exported.

Specifically, in the present embodiment, the side of the testing result whether qualified to the electric capacity that exports at least one NFC smart card Formula is not limited, and such as can be display screen, indicator lamp, voice or at least two modes being combined.

The capacitance determining method that the present embodiment is provided, according to capacitance detecting soft communication agreement and at least one NFC intelligence Card is communicated；Detect whether the electric capacity of at least one NFC smart card is qualified according to capacitance detecting soft communication agreement；Output is extremely Lack the whether qualified testing result of the electric capacity of a NFC smart card.Due to carrying out communication party using with least one NFC smart card Whether formula is qualified come the electric capacity for detecting each NFC smart cards, so the mode for avoiding contact charging carries out the detection of electric capacity, letter Operation is changed.And the electric capacity of multiple NFC smart cards can be detected simultaneously, be adapted to the application for producing detection in enormous quantities.

Fig. 2 is the flow chart of capacitance determining method embodiment two of the present invention, as shown in Fig. 2 the electric capacity that the present embodiment is provided Detection method, is on the basis of capacitance determining method embodiment one of the present invention, to the further thin of step 101- steps 103 Change, then the capacitance determining method that the present embodiment is provided comprises the following steps.

Step 201, at least one NFC smart card foundation communication connection with searching.

It should be noted that in the present embodiment, step 201- steps 206 are to capacitance determining method embodiment one of the present invention In step 101-102 further refinement.

In the present embodiment, before being detected at least one NFC smart card, NFC smart cards are placed on capacitance detecting The vicinity of device, so that capacitance detecting device can search NFC smart cards, setting up NFC communication with it is connected.

Specifically, in the present embodiment, capacitance detecting device includes NFC module for reading and writing, and NFC module for reading and writing includes at least one NFC read-write cells, each NFC read-write cells include：NFC antenna and NFC read-write control units.In the present embodiment, it can be opened into NFC read-write control units control NFC antenna in a few NFC read-write cell, at least one NFC read-write cell works in read-write Device pattern.The search of NFC smart cards is carried out, NFC smart cards corresponding with what is searched set up communication connection.

Step 202, write-in is carried at least one NFC smart card transmission first carrier signal, in first carrier signal quiet The instruction of state variable, to write static variable at least one NFC smart card.

Specifically, in the present embodiment, first carrier signal, first are sent to corresponding NFC smart cards in each NFC antenna Carrier signal is the carrier signal after coded modulation, and the instruction of write-in static variable is carried in first carrier signal, so that NFC smart cards are received in first carrier signal, and decoding demodulation is carried out by the intelligent card control module in NFC smart cards, it is determined that After instruction of the instruction for write-in static variable in first carrier signal, static variable is written in smart card memory module, The static variable is stored.

Wherein, static variable is a constant, in the case of the circuit module normal work of NFC smart cards, the static state The value of variable will not change.

Step 203, the communication connection with least one NFC smart card is interrupted until recovering and at least one after preset time period The communication connection of individual NFC smart cards.

Specifically, in the present embodiment, the communication connection with least one NFC smart card is interrupted until preset time period, if Electric capacity in NFC smart cards is qualified, then the circuit module in NFC smart cards is discharged, and makes the circuit module of NFC smart cards Still in the state of normal work.The value for the static variable being written in smart card memory module will not change, if NFC smart cards In electric capacity it is unqualified, it is impossible to the circuit module in NFC smart cards is discharged or discharge time is shorter, make NFC intelligence The circuit module of card can not be in normal operating conditions in preset time period, after NFC smart cards are stopped, recover again During communication, the static variable can be initialised, and the static variable for reading and writing can be inconsistent.In the present embodiment, recover with After the communication connection of at least one NFC smart card, NFC smart cards are received after carrier signal, the NFC antenna mould in NFC smart cards NFC antenna unit in block receives carrier signal, and electric energy capturing unit captures electric energy for whole NFC from the carrier signal of reception The circuit structure of smart card is powered, if the electric capacity in NFC smart cards is qualified electric capacity, receives electric energy, is electric capacity charging.

Wherein, preset time period is calculated according to the capacitance of electric capacity.It ensure that the NFC intelligence in preset time period Electric capacity in blocking can provide stable power supply for the circuit module in NFC smart cards.

Step 204, reading is carried at least one NFC smart card the second carrier signal of transmission, in the second carrier signal quiet The instruction of state variable, so that at least one NFC smart card reads static variable.

Specifically, in the present embodiment, after the communication connection with least one NFC smart card is recovered, at least one NFC Smart card sends the second carrier signal, and the second carrier signal is that device control module carries out the carrier signal after coded modulation, The instruction for reading static variable is carried in second carrier signal, so that the NFC antenna module of NFC smart cards receives the second carrier wave After signal, intelligent card control module carries out decoding demodulation to the second carrier signal, determines the instruction in the second carrier signal to read Take after the instruction of static variable, static variable is read from memory module, and static variable coded modulation is believed to the 3rd carrier wave In number, capacitance detecting device is sent to by NFC antenna module.

Step 205, receive the 3rd carrier signal of at least one NFC smart card transmission, carry in the 3rd carrier signal from The static variable that NFC smart cards are read.

Specifically, the NFC antenna in capacitance detecting device is received after the 3rd carrier signal, by device control module to Three carrier signals carry out decoding demodulation, obtain the static variable read from NFC smart cards carried in the 3rd carrier signal.

Step 206, judge to be written to the static variable of at least one NFC smart card and read from corresponding NFC smart cards Static variable it is whether consistent, if so, then perform step 207, otherwise perform step 208.

Step 207, it is determined that the electric capacity of correspondence NFC smart cards is qualified.

Step 208, it is determined that the electric capacity of correspondence NFC smart cards is unqualified.

It should be noted that step 206- steps 208 are to the step 102 in capacitance determining method embodiment one of the present invention Further refinement.

Further, illustrated with reference to step 206- steps 208.In the present embodiment, the device in capacitance detecting device First device judging unit in control module judges to be written to the static variable of at least one NFC smart card and from corresponding Whether the static variable that NFC smart cards are read is consistent, if being written to the static variable of NFC smart cards and intelligent from corresponding NFC Block the static variable read consistent, then illustrate interrupting the communication connection with least one NFC smart card until preset time period In, electric capacity in NFC smart cards can regular picture, and the time discharged meet the capacitance of electric capacity, can be in preset time Guarantee to provide burning voltage for the circuit module in NFC smart cards in section, it is determined that the electric capacity of correspondence NFC smart cards is qualified. If the static variable for being written to the static variable of NFC smart cards and being read from corresponding NFC smart cards is inconsistent, illustrate NFC Electric capacity in smart card can not regular picture, or the time of electric discharge be unsatisfactory for the capacitance of electric capacity, it is impossible to ensure when default Between provide burning voltage for the circuit module in NFC smart cards in section, it is determined that correspondingly the electric capacity of NFC smart cards is unqualified.

Step 209, the whether qualified testing result of the electric capacity of at least one NFC smart card is exported.

Further, in the present embodiment, it is by one or more mode output capacitances of display, indicator lamp and voice No qualified testing result.

When specifically, by the whether qualified testing result of display output capacitance, electric capacity can be shown respectively by 0 and 1 Detect underproof result and qualified result., can be by red during by the whether qualified testing result of indicator lamp output capacitance Lamp and green light represent the underproof result of capacitance detecting and qualified result respectively.Pass through the whether qualified inspection of voice output electric capacity When surveying result, the whether qualified testing result of the output capacitance of loudspeaker broadcasting voice can be passed through.

During by the whether qualified testing result of any various ways output capacitance of display, indicator lamp and voice, together When the output of the whether qualified testing result of electric capacity is carried out with the various ways that select.

The capacitance determining method that the present embodiment is provided, according to capacitance detecting soft communication agreement, with search at least one Individual NFC smart cards set up communication connection, send in first carrier signal, first carrier signal and take at least one NFC smart card Instruction with write-in static variable, so that at least one NFC smart card writes static variable, is interrupted and at least one NFC intelligence The communication connection of card is until recovering the communication connection with least one NFC smart card after preset time period, at least one NFC intelligence The instruction for sending and being carried in the second carrier signal, the second carrier signal and reading static variable can be blocked, so that at least one NFC is intelligent Card reads static variable, receives the 3rd carrier signal of at least one NFC smart card transmission, carry in the 3rd carrier signal from The static variable that NFC smart cards are read, judges to be written to the static variable of at least one NFC smart card and from corresponding NFC intelligence The static variable read can be blocked whether consistent, if, it is determined that the electric capacity of correspondence NFC smart cards is qualified, otherwise determines correspondence NFC The electric capacity of smart card is unqualified, exports the whether qualified testing result of the electric capacity of at least one NFC smart card.It can not only simplify Operation, can be detected to the electric capacity of multiple NFC smart cards simultaneously, be adapted to the application for producing detection in enormous quantities, and can be right The whether qualified carry out effective detection of electric capacity, improves the accuracy of detection.

Fig. 3 is the flow chart of capacitance determining method embodiment three of the present invention, and the capacitance determining method that the present embodiment is provided is On the basis of capacitance determining method embodiment two of the present invention, it further comprises and capacitance detecting process is judged during capacitance detecting Whether abnormal step is occurred, and user carries out the step of capacitance detecting number is selected by user input interface.Then The capacitance determining method that the present embodiment is provided comprises the following steps.

Step 301, receive being communicated with least one NFC smart card of being selected by user input interface of user to A few NFC reading unit.

Specifically, in the present embodiment, user input interface includes：Button, button or virtual key, selection wheel disc or other Input interface available for operational control.The user input interface includes user's selecting switch, receives user and is selected by user At least one NFC reading unit communicated with least one NFC smart card of selection is switched, by NFC reading units Selection realize selection to capacitance detecting number.

Step 302, the enabled instruction that user is switched by user input interface power switch and capacitance detecting is received, is started Capacitance detecting.

In the present embodiment, user input interface also includes：Power switch and capacitance detecting starting switch.Pass through power switch Startup power supply module, is that capacitance detecting device is powered.By capacitance detecting starting switch start-up capacitance detection means, electric capacity is performed Detection method, carries out capacitance detecting.

Step 303, at least one the NFC smart card for judging whether and searching is successfully established communication connection, if so, then holding Row step 304, otherwise performs step 313.

Step 304, write-in is carried at least one NFC smart card transmission first carrier signal, in first carrier signal quiet The instruction of state variable, to write static variable at least one NFC smart card.

Further, in the present embodiment, completed in the NFC antenna of at least one NFC reading unit at least one NFC intelligence After the search that can block, set up and communicate to connect with corresponding NFC smart cards, at least one NFC intelligence for judging whether and searching Card is successfully established communication connection, if so, then being sent at least one NFC smart card in first carrier signal, first carrier signal The instruction of write-in static variable is carried, to write static variable at least one NFC smart card, otherwise, output capacitance detection Abnormal operation.

Step 305, judge whether NFC smart cards write-in static variable succeeds, if so, then performing step 306, otherwise perform Step 313.

Step 306, the communication connection with least one NFC smart card is interrupted until recovering and at least one after preset time period The communication connection of individual NFC smart cards.

Further, in the present embodiment, can be in a storage module by the intelligent card control module judgement of NFC smart cards The no static variable that there is write-in, and send the mode of write-in static variable success or failure message to sentence to capacitance detecting device Whether disconnected NFC smart cards write-in static variable succeeds, however, it is determined that the write-in static variable success of NFC smart cards, then interrupt with least The communication connection of one NFC smart card is until recovering the communication connection with least one NFC smart card after preset time period, otherwise The abnormal operation of output capacitance detection.

Wherein, the write-in static variable success message sent to capacitance detecting device can be by the way of carrying zero in message Carry out, the write-in static variable failed message sent to capacitance detecting device can be entered by the way of non-zero is carried in the message OK.

Step 307, reading is carried at least one NFC smart card the second carrier signal of transmission, in the second carrier signal quiet The instruction of state variable, so that at least one NFC smart card reads static variable.

Step 308, the 3rd carrier signal of at least one NFC smart card transmission is received, judges quiet from the reading of NFC smart cards Whether state variable succeeds, if so, then performing step 309, otherwise performs step 313

Further, the 3rd carrier signal of at least one NFC smart card transmission is received, device control module is carried to the 3rd Ripple signal carries out decoding demodulation, if carrying the static variable read from NFC smart cards in the 3rd carrier signal, illustrates from NFC Smart card reads whether static variable succeeds, and judges to be written to the static variable of at least one NFC smart card and from corresponding NFC Whether the static variable that smart card is read is consistent.Otherwise, the abnormal operation of output capacitance detection.

Step 309, judge to be written to the static variable of at least one NFC smart card and read from corresponding NFC smart cards Static variable it is whether consistent, if so, then perform step 310, otherwise perform step 311.

It should be noted that step 303, step 305 and step 308 are that to judge whether capacitance detecting process occurs abnormal Step, if abnormal, the abnormal operation of output capacitance detection occurs in capacitance detecting process, otherwise output capacitance detection is normal Working condition.

Step 310, it is determined that the electric capacity of correspondence NFC smart cards is qualified.

Step 311, it is determined that the electric capacity of correspondence NFC smart cards is unqualified.

In the present embodiment, in the implementation of step 309- steps 311 and capacitance determining method embodiment two of the present invention The implementation of step 206- steps 208 is identical, and this is no longer going to repeat them.

Step 312, whether the normal operating conditions of output capacitance detection and the electric capacity of at least one NFC smart card are qualified Testing result.

Step 313, the abnormal operation of output capacitance detection.

Further, in the present embodiment, it is by one or more mode output capacitances of display, indicator lamp and voice The normal or abnormal operation of no qualified testing result and capacitance detecting.

Specifically, in the present embodiment, using the whether qualified testing result of display output capacitance and capacitance detecting just Often or abnormal operation be specially：If capacitance detecting process is normal, directly show that electric capacity is underproof respectively by 0 and 1 Testing result and the qualified testing result of electric capacity.If there is abnormal, display " fall ", to represent capacitance detecting in capacitance detecting Abnormal operation.Using the normal or abnormal work shape of the whether qualified testing result of indicator lamp output capacitance and capacitance detecting State is specially：Can be using one or two indicator lamp come the normal of the whether qualified testing result of output capacitance and capacitance detecting Or abnormal operation, during using an indicator lamp, if exception occurs in capacitance detecting, use is reminded in the way of blinking red lamp Family, does not flash, and represent the underproof testing result of electric capacity respectively and qualified by red light and green light if capacitance detecting is normal Testing result；During using two indicator lamps, then an indicator lamp represents the work of capacitance detecting by red light and green light respectively State, another indicator lamp represents the underproof testing result of electric capacity and qualified testing result respectively by red light and green light. Using speech pattern, the working condition of user's capacitance detecting and the detection knot of electric capacity are pointed out by way of loudspeaker plays voice Really.

The capacitance determining method that the present embodiment is provided, by receiving that user selected by user input interface and at least one At least one NFC reading unit that individual NFC smart cards are communicated, can independently be selected the detection number of NFC smart cards Select, by judging that at least one NFC smart card with searching sets up whether communication connection succeeds, and judge NFC smart cards Whether write-in static variable succeeds, and judges to read whether static variable succeeds from NFC smart cards, if unsuccessful, exports The normal operating conditions of the abnormal operation of capacitance detecting, otherwise output capacitance detection, can occur abnormal in capacitance detecting When, to user to point out, and then capacitance detecting device can be safeguarded in time.

Fig. 4 is the flow chart of capacitance determining method example IV of the present invention, as shown in figure 4, the executive agent of the present embodiment For NFC smart cards, then the capacitance determining method that the present embodiment is provided comprises the following steps.

Step 401, storage read-write communication protocol and the capacitive sensing parameter of write-in.

Specifically, in the present embodiment, read-write communication protocol can be stored in the form of program, the read-write communication protocol Defined in the principle and flow that are written and read.In device memory module in the read-write communication protocol and capacitance detecting device Capacitance detecting soft communication agreement is corresponding.

Step 402, communicated according to read-write communication protocol control NFC antenna module with capacitance detecting device.

Specifically, in the present embodiment, by performing the read-write communication protocol, NFC antenna module and capacitance detecting be can control Device is communicated, and with capacitance detecting device progress communication process, the read-write of the parameter of capacitance detecting being completed, by electric capacity Detection parameter stored, and the parameter to capacitance detecting transmission so that ginseng of the capacitance detecting device according to capacitance detecting It is several whether qualified to electric capacity to detect.

The capacitance determining method that the present embodiment is provided, by the capacitive sensing parameter for storing read-write communication protocol and write-in； Communicated according to read-write communication protocol control NFC antenna module with capacitance detecting device.Due to being carried out using with NFC smart cards Whether communication mode is qualified come the electric capacity for detecting each NFC smart cards, so the mode for avoiding contact charging carries out electric capacity Detection, simplifies operation.And the electric capacity of multiple NFC smart cards can be detected simultaneously, be adapted to produce detection in enormous quantities Using.

Fig. 5 is the flow chart of capacitance determining method embodiment five of the present invention, as shown in figure 5, the electric capacity that the present embodiment is provided Detection method is on the basis of capacitance determining method example IV of the present invention, the further refinement to step 102, then the present embodiment The capacitance determining method of offer comprises the following steps.

Step 501, storage read-write communication protocol.

In the present embodiment, the implementation of step 501 and the step 401 in capacitance determining method example IV of the present invention Implementation is identical, and this is no longer going to repeat them.

Step 502, the communication connection with capacitance detecting device is set up.

It should be noted that in the present embodiment, step 502- steps 508 are to capacitance determining method example IV of the present invention In step 402 further refinement.

Step 503, the first carrier signal that capacitance detecting device is sent is received, electric energy is captured from first carrier signal, To be powered to NFC smart cards.

Further, in the present embodiment, after foundation is connected with the NFC communication of capacitance detecting device, capacitance detecting dress is received The carrier signal that NFC antenna in a certain NFC read-write cells put is sent, receives first carrier signal, NFC antenna module first Electric energy capturing unit by first carrier signal capture electric energy, be that each circuit module of NFC smart cards is powered, if NFC intelligence The electric capacity that can block is qualified electric capacity, in each circuit module power supply process to NFC smart cards, it is ensured that at each circuit module In the state of normal work.

Step 504, decoding demodulation is carried out to first carrier signal, become according to the write-in static state carried in first carrier signal The instruction of amount, smart card memory module is written to by static variable.

Further, in the present embodiment, first carrier signal is carries out the signal of coded modulation, in the first carrier signal In carry write-in static variable instruction, so the intelligent card control module of NFC smart cards is solved to first carrier signal Code demodulation, obtains control instruction, if control instruction is the instruction of write-in static variable, static variable is written into storage mould Block, is stored to static variable.

Step 505, interrupt and communicate to connect with capacitance detecting device, then electric capacity is put in the preset time period of interruption Electricity, until recovering to recover to communicate to connect with capacitance detecting device.

Further, in the present embodiment, if monitoring, capacitance detecting device does not retransmit first carrier signal, illustrate with Capacitance detecting device has interrupted communication connection, in order to ensure the normal work of NFC smart cards, if the electric capacity in NFC smart cards is Qualified electric capacity, then electric capacity is discharged to ensure as the stable confession of circuit module in the preset time period for interrupting communication connection Electricity.If monitoring, capacitance detecting device recovers communication connection, again by circuit module of the electric energy capturing unit for NFC smart cards It is powered.

Wherein, preset time period is to be calculated by the capacitance of electric capacity.

Step 506, the second carrier signal that capacitance detecting device is sent is received, electric energy is captured from the second carrier signal, To be powered to NFC smart cards.

Step 507, decoding demodulation is carried out to the second carrier signal, become according to the reading static state carried in the second carrier signal The instruction of amount, reads static variable from smart card memory module.

Step 508, the static variable of reading is carried in the 3rd carrier signal, coding tune is carried out to the 3rd carrier signal System, is sent to capacitance detecting device.

Further, illustrated with reference to step 506- steps 508.In the present embodiment, recover and electric capacity in NFC smart cards After the communication connection of detection means, the second carrier signal of capacitance detecting device transmission is received, the second carrier signal is coding Signal after modulation, the intelligent card control module of NFC smart cards is carried out after decoding demodulation to second carrier signal, obtains second Control instruction in carrier signal, however, it is determined that control instruction then reads static state to read static variable instruction from memory module Variable, and the static variable of reading is carried in the 3rd carrier signal, coded modulation is carried out to the 3rd carrier signal, is sent to The corresponding NFC antenna of the corresponding NFC reading units of capacitance detecting device, so that the device control module in capacitance detecting device will The static variable for being written to the static variable of at least one NFC smart card and being read from corresponding NFC smart cards is contrasted, and is sentenced Whether the disconnected static variable for being written to NFC smart cards is consistent with the static variable read from corresponding NFC smart cards to be detected pair Answer the electric capacity of NFC smart cards whether qualified.

The capacitance determining method that the present embodiment is provided, by storing read-write communication protocol, sets up and capacitance detecting device Communication connection, receives the first carrier signal that capacitance detecting device is sent, electric energy is captured from first carrier signal, with to NFC Smart card is powered, and decoding demodulation is carried out to first carrier signal, according to the write-in static variable carried in first carrier signal Instruction, smart card memory module is written to by static variable, is interrupted and is communicated to connect with capacitance detecting device, then in the default of interruption Electric capacity is discharged in period, until recovering to communicate to connect with capacitance detecting device, receives capacitance detecting device is sent the Two-carrier signal, electric energy is captured from the second carrier signal, to be powered to NFC smart cards, and the second carrier signal is decoded Demodulation, according to the instruction of the reading static variable carried in the second carrier signal, reads static become from smart card memory module Amount, the static variable of reading is carried in the 3rd carrier signal, is carried out coded modulation to the 3rd carrier signal, is sent to electric capacity Detection means, can not only simplify operation, the electric capacity of multiple NFC smart cards can be detected simultaneously, be adapted to produce in enormous quantities The application of detection, and the accuracy of detection can be improved to the whether qualified carry out effective detection of electric capacity.

Fig. 6 is the flow chart of capacitance determining method embodiment six of the present invention, as shown in fig. 6, the electric capacity that the present embodiment is provided Detection method, on the basis of capacitance determining method embodiment five of the present invention, further comprises to whether write-in static variable succeeds The step of being judged, the then capacitance determining method that the present embodiment is provided comprises the following steps.

Step 601, storage read-write communication protocol.

Step 602, the communication connection with capacitance detecting device is set up.

Step 603, the first carrier signal that capacitance detecting device is sent is received, electric energy is captured from first carrier signal, To be powered to NFC smart cards.

Step 604, decoding demodulation is carried out to first carrier signal, become according to the write-in static state carried in first carrier signal The instruction of amount, memory module is written to by static variable.

In the present embodiment, in the implementation of step 601- steps 604 and capacitance determining method embodiment one of the present invention The implementation of step 501- steps 504 is identical, and this is no longer going to repeat them.

Step 605, judge whether write-in static variable succeeds, if so, then performing step 606, otherwise perform step 607.

Step 606, the write-in successful message of static variable is sent to capacitance detecting device.

Step 608 is performed after execution of step 606.

Step 607, write-in static variable failure is sent to capacitance detecting device.

Terminate after execution of step 607.

Further, in the present embodiment, judge whether write-in static variable succeeds, however, it is determined that write-in static variable success, Then the write-in successful message of static variable is sent to capacitance detecting device；If it is determined that write-in static variable failure, then examine to electric capacity Survey device and send write-in static variable failure, so that capacitance detecting device fails according to the write-in static variable received Message or write-in the successful message of static variable after, the working condition to capacitance detecting judges.

Step 608, interrupt and communicate to connect with capacitance detecting device, in the preset time period of interruption, electric capacity is discharged, Until recovering to communicate to connect with capacitance detecting device.

Step 609, the second carrier signal that capacitance detecting device is sent is received, electric energy is captured from the second carrier signal, To be powered to NFC smart cards.

Step 610, decoding demodulation is carried out to the second carrier signal, become according to the reading static state carried in the second carrier signal The instruction of amount, reads static variable from memory module.

Step 611, the static variable of reading is carried in the 3rd carrier signal, coding tune is carried out to the 3rd carrier signal System, is sent to capacitance detecting device.

In the present embodiment, in the implementation of step 609- steps 611 and capacitance determining method embodiment five of the present invention The implementation of step 505- steps 508 is identical, and this is no longer going to repeat them.

The capacitance determining method that the present embodiment is provided, by judging whether write-in static variable succeeds, if so, then to electric capacity Detection means sends the write-in successful message of static variable.Otherwise disappearing for write-in static variable failure is sent to capacitance detecting device Breath.Capacitance detecting device can be made to judge the working condition of capacitance detecting according to the message of write-in static variable success or failure, And to user to point out, and then capacitance detecting device can be safeguarded in time when capacitance detecting occurs abnormal.

One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a read/write memory medium.The program is being held During row, the step of execution includes above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or CD Etc. it is various can be with the medium of store program codes.

Fig. 7 is the structural representation of capacitance detecting device embodiment one of the present invention, as shown in fig. 7, what the present embodiment was provided Capacitance detecting device includes：Device control module 71, and the NFC module for reading and writing 72 being connected with device control module 71, and output Module 73.

Wherein, NFC module for reading and writing 72, for intelligently being sticked into at least one NFC according to capacitance detecting soft communication agreement Row communication.Device control module 71, for controlling NFC module for reading and writing and at least one according to capacitance detecting soft communication agreement NFC smart cards are communicated and detect whether the electric capacity of at least one NFC smart card is qualified.Output module 73, for exporting extremely Lack the whether qualified testing result of the electric capacity of a NFC smart card.

Specifically, in the present embodiment, NFC module for reading and writing 72 and device control module 71 could be arranged to two independent electricity Road module it can also be provided that the single circuit module of common sparing circuit, its can only with integrated circuit implementation, It can also be combined using integrated circuit and discrete device and implementation that integrated circuit and single-chip microcomputer are combined is constructed The function of whole circuit.Output module 73 can include display, indicator lamp, loudspeaker etc..

The capacitance detecting device that the present embodiment is provided can perform the technical scheme of embodiment of the method shown in Fig. 1, and it is realized Principle is similar with technique effect, and here is omitted.

Fig. 8 is the structural representation of capacitance detecting device embodiment two of the present invention, as shown in figure 8, what the present embodiment was provided Capacitance detecting device is on the basis of capacitance detecting device embodiment one of the present invention, in addition to input module 81 and power module 82。

Further, power module 82 respectively with input module 81, NFC module for reading and writing 72, device control module 71 and defeated Go out module 73 to electrically connect.

Wherein, power module 82 is used for input module 81, NFC module for reading and writing 72, device control module 71 and output mould Block 73 is powered.

Further, NFC module for reading and writing 72 includes：At least one NFC read-write cell 721, each NFC read-write cells 721 Including：NFC antenna 721a and NFC read-write control unit 721b, NFC antenna 721a and NFC read-write control unit 721b are electrically connected. Wherein, two NFC read-write cells 721 are only illustrated in fig. 8.

Wherein, NFC antenna 721a is used for：Under NFC read-write control units 721b control, with search at least one NFC smart cards set up communication connection, send in first carrier signal, first carrier signal and carry at least one NFC smart card The instruction of static variable is write, to write static variable at least one NFC smart card；Interrupt and at least one NFC smart card Communication connection until recovering and the communication connection of at least one NFC smart card after preset time period；To at least one NFC intelligence Card sends the instruction for being carried in the second carrier signal, the second carrier signal and reading static variable, so that at least one NFC smart card Read static variable；Receive and carried in the 3rd carrier signal of at least one NFC smart card transmission, the 3rd carrier signal from NFC The static variable that smart card is read.NFC read-write control unit 721b, for controlling NFC antenna to be carried out with corresponding NFC smart cards Communication.

Further, device control module 71, including：Device control units 711, device memory cell 712 and first is filled Put judging unit 713.

Device control units 711 is electrically connected with device memory cell 712 and first device judging unit 713.

Wherein, device control units 711 is used for：The capacitance detecting soft communication agreement that input module 81 is inputted is received, and By capacitance detecting soft communication agreement deposit device memory cell 712, and NFC is controlled to read according to capacitance detecting soft communication agreement Writing module 72 is communicated with least one NFC smart card.Device memory cell 712, for the communication of storage capacitance inspection software Agreement.First device judging unit 713, for judging to be written to the static variable of at least one NFC smart card and from corresponding Whether the static variable that NFC smart cards are read is consistent；If being written to the static variable of NFC smart cards and intelligent from corresponding NFC Block the static variable read consistent, it is determined that the electric capacity of correspondence NFC smart cards is qualified；If being written to the static change of NFC smart cards Amount and the static variable read from corresponding NFC smart cards are inconsistent, it is determined that the electric capacity of correspondence NFC smart cards is unqualified.

Further, input module 81 includes：Capacitance detecting soft communication agreement interface 811 and user input interface 812. The user input interface 812 includes user's selecting switch 812a.

Wherein, capacitance detecting soft communication agreement interface 811 is used for：Input capacitance inspection software communication protocol.User selects Selecting switch 812a is used for：Receive being communicated with least one NFC smart card of being selected by user input interface of user to A few NFC reading unit 721.

Further, user input interface 812 also includes：Power switch 812b and capacitance detecting starting switch 812c.

Wherein, power switch 812b is electrically connected with power module 81, and capacitance detecting starting switch 812c controls mould with device Block 71 is electrically connected.

Power switch 812b is used for：Startup power supply module 81, so that power module 81 reads and writes mould to input module 81, NFC Block 72, device control module 71 and output module 73 are powered.Capacitance detecting starting switch 812c is used for：Start-up capacitance detection dress Put.

Further, device control module 71 also includes：Second device judging unit 714.

Wherein, second device judging unit 714 is used for：Judge whether capacitance detecting process exception occurs.Correspondingly, export Module 74, is additionally operable to the normal or abnormal operation of output capacitance detection.

Further, second device judging unit 714 specifically for：At least one the NFC smart card for judging and searching Set up whether communication connection succeeds；And judge whether NFC smart cards write-in static variable succeeds；And judge from NFC intelligence Card reads whether static variable succeeds.

Further, output module can include display, indicator lamp, loudspeaker any one or more.

The capacitance detecting device that the present embodiment is provided can perform the technical scheme of embodiment of the method shown in Fig. 2 and Fig. 3, its Implementing principle and technical effect are similar, and here is omitted.

Fig. 9 is the structural representation of NFC smartcard embodiments one of the present invention, as shown in figure 9, the NFC that the present embodiment is provided Smart card includes：Intelligent card control module 91, and the memory module 92 and NFC antenna module being connected with intelligent card control module 91 93。

Wherein, memory module 92 is used for：Storage read-write communication protocol and the capacitive sensing parameter of write-in.NFC antenna module 93 are used for：Communicated with capacitance detecting device.Intelligent card control module 91 is used for：Controlled NFC days according to read-write communication protocol Wire module is communicated with capacitance detecting device.

Specifically, in the present embodiment, NFC antenna module 93 and intelligent card control module 91 could be arranged to independent two Circuit module it can also be provided that the single circuit module of common sparing circuit, its can only with integrated circuit realization side Formula, it would however also be possible to employ the implementation that integrated circuit and discrete device are combined and integrated circuit and single-chip microcomputer are combined carrys out structure Make the function of whole circuit.Memory module 92 can use EEPROM, EPROM, FLASH, ferroelectric memory or phase transition storage Realized Deng nonvolatile semiconductor memory member, it would however also be possible to employ the volatile storage such as one or more registers, buffer and RAM The combination of device and at least one nonvolatile memory of the above is realized.

The NFC smart cards that the present embodiment is provided can perform the technical scheme of embodiment of the method shown in Fig. 4, its realization principle Similar with technique effect, here is omitted.

Figure 10 is the structural representation of NFC smartcard embodiments two of the present invention, as shown in Figure 10, what the present embodiment was provided NFC smart cards are on the basis of NFC smartcard embodiments one of the present invention, in addition to following characteristics.

Further, NFC antenna module 93 includes：Electric energy capturing unit 931 and NFC antenna unit 932.Intelligent card control Module 91 includes：Intelligent card control units 911.

NFC antenna unit 932 is used for：Set up the communication connection with capacitance detecting device；Capacitance detecting device is received to send First carrier signal.Electric energy capturing unit 931 is used for：Electric energy is captured in the first carrier signal received from NFC antenna unit, To be powered to NFC smart cards.Intelligent card control units 911 are used for：Decoding demodulation is carried out to first carrier signal, carried according to first The instruction of the write-in static variable carried in ripple signal, memory module 92 is written to by static variable.NFC antenna unit 932 is also For：Receive the second carrier signal that capacitance detecting device is sent.Electric energy capturing unit 931 is additionally operable to：Connect from NFC antenna unit Electric energy is captured in the second carrier signal received, to be powered to NFC smart cards.Intelligent card control units 911 are additionally operable to：Carried to second Ripple signal carries out decoding demodulation, according to the instruction of the reading static variable carried in the second carrier signal, from memory module 92 Read static variable；The static variable of reading is carried in the 3rd carrier signal, coded modulation is carried out to the 3rd carrier signal. NFC antenna unit 932 is additionally operable to：The 3rd carrier signal after coded modulation is sent to capacitance detecting device.

Further, intelligent card control module 91 also includes：Smart card judging unit 912.

Wherein, smart card judging unit 912 is used for：Judge whether write-in static variable succeeds.NFC antenna unit 932 is also For：If it is determined that write-in static variable success, then send the write-in successful message of static variable to capacitance detecting device；If it is determined that Static variable failure is write, then sends write-in static variable failure to capacitance detecting device.

The NFC smart cards that the present embodiment is provided can perform the technical scheme of embodiment of the method shown in Fig. 5 and Fig. 6, in fact Existing principle is similar with technique effect, and here is omitted.

Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology The scope of scheme.

Claims

1. a kind of capacitance determining method, it is characterised in that including：

2. according to the method described in claim 1, it is characterised in that according to the electric capacity soft communication agreement and at least one institute State NFC smart cards to be communicated, specifically include：

With at least one the NFC smart card foundation communication connection searched；

Sent to NFC smart cards at least one described and the static change of write-in is carried in first carrier signal, the first carrier signal The instruction of amount, to write the static variable to NFC smart cards at least one described；

The communication connection with least one NFC smart card is interrupted until described in recovery after preset time period and at least one The communication connection of NFC smart cards；

Send to carry in the second carrier signal, second carrier signal to NFC smart cards at least one described and read static become The instruction of amount, so that at least one described NFC smart card reads the static variable；

Receive and carried in the 3rd carrier signal that at least one described NFC smart card is sent, the 3rd carrier signal from NFC intelligence The static variable read can be blocked.

3. method according to claim 2, it is characterised in that described to be detected according to the capacitance detecting soft communication agreement Whether the electric capacity of at least one NFC smart card is qualified, specifically includes：

Judging the static variable for being written to the static variable of at least one NFC smart card and being read from corresponding NFC smart cards is It is no consistent；

If it is consistent with the static variable read from corresponding NFC smart cards to be written to the static variable of NFC smart cards, it is determined that right Answer the electric capacity of NFC smart cards qualified；

If the static variable for being written to the static variable of NFC smart cards and being read from corresponding NFC smart cards is inconsistent, it is determined that The electric capacity of correspondence NFC smart cards is unqualified.

4. the method according to claim any one of 1-3, it is characterised in that described according to the capacitance detecting software communication Agreement with before NFC smart cards are communicated at least one described, in addition to：

Receive that user selected by user input interface with NFC smart cards are communicated at least one described at least one NFC reading units.

5. method according to claim 4, it is characterised in that also include：

Judge whether capacitance detecting process exception occurs；

The normal or abnormal operation of output capacitance detection.

6. method according to claim 5, it is characterised in that described to judge whether capacitance detecting process exception occurs, tool Body includes：

At least one the NFC smart card for judging and searching sets up whether communication connection succeeds；And

Judge that the NFC smart cards write whether the static variable succeeds；And

Judge to read whether the static variable succeeds from the NFC smart cards.

7. method according to claim 6, it is characterised in that the whether qualified testing result of the output capacitance and electric capacity The normal or abnormal operation of detection, is specifically included：

Examined by the whether qualified testing result of one or more mode output capacitances of display, indicator lamp and voice and electric capacity The normal or abnormal operation surveyed.

8. a kind of capacitance detecting device, it is characterised in that including：Device control module, and be connected with described device control module NFC module for reading and writing, and output module；

The NFC module for reading and writing is used for：Intelligently sticked into NFC at least one described according to the capacitance detecting soft communication agreement Row communication；

Described device control module is used for：According to the capacitance detecting soft communication agreement control NFC module for reading and writing and extremely A few NFC smart card is communicated and detects whether the electric capacity of at least one NFC smart card is qualified；

9. device according to claim 8, it is characterised in that the NFC module for reading and writing includes：At least one NFC reads and writes Unit, each NFC read-write cells include：NFC antenna and NFC read-write control units, the NFC antenna and the NFC are read Write control unit electrical connection；

The NFC antenna is used for：Under the control of the NFC read-write control units, with least one the NFC smart card searched Communication connection is set up, sends to carry in first carrier signal, the first carrier signal to NFC smart cards at least one described and writes Enter the instruction of static variable, to write the static variable to NFC smart cards at least one described；Interrupt with least one described in The communication connection of NFC smart cards is until recovering the communication connection with least one NFC smart card after preset time period；To extremely A few NFC smart card sends the instruction for being carried in the second carrier signal, second carrier signal and reading static variable, So that at least one described NFC smart card reads the static variable；Receive at least one described NFC smart card is sent the 3rd The static variable read from NFC smart cards is carried in carrier signal, the 3rd carrier signal；

The NFC read-write control units, for controlling NFC antenna to be communicated with corresponding NFC smart cards.

10. device according to claim 9, it is characterised in that described device control module, including：Device control units, Device memory cell and first device judging unit；

Described device control unit is electrically connected with described device memory cell and first device judging unit；

Described device control unit is used for：The capacitance detecting soft communication agreement of input module input is received, and by the electric capacity Inspection software communication protocol is stored in described device memory cell, and controls NFC to read according to the capacitance detecting soft communication agreement Writing module is communicated with NFC smart cards at least one described；

Described device memory cell, for storing the capacitance detecting soft communication agreement；

The first device judging unit, for judging to be written to the static variable of at least one NFC smart card and from corresponding Whether the static variable that NFC smart cards are read is consistent；If being written to the static variable of NFC smart cards and intelligent from corresponding NFC Block the static variable read consistent, it is determined that the electric capacity of correspondence NFC smart cards is qualified；If being written to the static change of NFC smart cards Amount and the static variable read from corresponding NFC smart cards are inconsistent, it is determined that the electric capacity of correspondence NFC smart cards is unqualified.

11. the device according to claim any one of 8-10, it is characterised in that also include：Input module；

The input module includes：Capacitance detecting soft communication agreement interface and user input interface, the user input interface Including user's selecting switch；

The capacitance detecting soft communication agreement interface is used for：Input capacitance inspection software communication protocol；

User's selecting switch is used for：It is intelligent with NFC at least one described that reception user is selected by user input interface Block at least one the NFC reading unit communicated.

12. device according to claim 11, it is characterised in that described device control module also includes：

Second device judging unit is used for：Judge whether capacitance detecting process exception occurs；

Correspondingly, the output module, is additionally operable to the normal or abnormal operation of output capacitance detection.

13. device according to claim 12, it is characterised in that the second device judging unit specifically for：

At least one the NFC smart card for judging and searching sets up whether communication connection succeeds；And judge the NFC smart cards Write whether the static variable succeeds；And judge to read whether the static variable succeeds from the NFC smart cards.

14. device according to claim 13, it is characterised in that the output module can include display, indicator lamp, Loudspeaker any one or more.

15. the device according to claim any one of 12-14, it is characterised in that also include：Power module, the power supply Module is electrically connected with the input module, the NFC module for reading and writing, described device control module and the output module respectively；

The power module is used for the input module, the NFC module for reading and writing, described device control module and the output Module for power supply.

16. device according to claim 15, it is characterised in that the user input interface also includes：Power switch and Capacitance detecting starting switch；

The power switch is electrically connected with the power module, the capacitance detecting starting switch and described device control module electricity Connection；

The power switch is used for：Start the power module, so that the power module is to the input module, the NFC Module for reading and writing, described device control module and the output module are powered；

The capacitance detecting starting switch is used for：Start-up capacitance detection means.

17. a kind of NFC smart cards, it is characterised in that including：Intelligent card control module, and with the intelligent card control module phase Memory module and NFC antenna module even；

The memory module is used for：Storage read-write communication protocol and the capacitive sensing parameter of write-in；

The intelligent card control module is used for：According to the read-write communication protocol control NFC antenna module and capacitance detecting device Communicated.

18. NFC smart cards according to claim 17, it is characterised in that the NFC antenna module includes：Electric energy is captured Unit and NFC antenna unit；The intelligent card control module includes：Intelligent card control units；

The NFC antenna unit is used for：Set up the communication connection with the capacitance detecting device；Receive the capacitance detecting device The first carrier signal of transmission；

The electric energy capturing unit is used for：Electric energy is captured in the first carrier signal received from NFC antenna unit, with to institute NFC smart cards are stated to power；

The intelligent card control units are used for：Decoding demodulation is carried out to the first carrier signal, believed according to the first carrier The instruction of the write-in static variable carried in number, memory module is written to by the static variable；

The NFC antenna unit is additionally operable to：Receive the second carrier signal that the capacitance detecting device is sent；

The electric energy capturing unit is additionally operable to：Electric energy is captured in second carrier signal received from NFC antenna unit, with right The NFC smart cards are powered；

The intelligent card control units are additionally operable to：Decoding demodulation is carried out to second carrier signal, according to second carrier wave The instruction of the reading static variable carried in signal, reads the static variable from memory module；By the static variable of reading Carry in the 3rd carrier signal, coded modulation is carried out to the 3rd carrier signal；

The NFC antenna unit is additionally operable to：The 3rd carrier signal after coded modulation is sent to the capacitance detecting device.

19. NFC smart cards according to claim 18, it is characterised in that the intelligent card control module also includes：Intelligence Card judging unit；

The smart card judging unit is used for：Judge whether write-in static variable succeeds；

The NFC antenna unit is additionally operable to：If it is determined that write-in static variable success, then send to the capacitance detecting device and write The successful message of static variable；If it is determined that write-in static variable failure, then send write-in static state to the capacitance detecting device and become Measure failure.