CN102810144B - Method and device for distance-controllable mobile payment - Google Patents

Method and device for distance-controllable mobile payment Download PDF

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Publication number
CN102810144B
CN102810144B CN201110143638.7A CN201110143638A CN102810144B CN 102810144 B CN102810144 B CN 102810144B CN 201110143638 A CN201110143638 A CN 201110143638A CN 102810144 B CN102810144 B CN 102810144B
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low frequency
frequency
magnetic
multiband
intensity
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CN102810144A (en
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罗魏熙
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罗魏熙
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B5/00Near-field transmission systems, e.g. inductive loop type
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

Abstract

The invention relates to a method and a device for distance-controllable mobile payment. The method includes measuring the magnetic field intensity (M2) of a first low-frequency (F2) radio signal sent from a multi-band card reader by a multi-band integrated circuit card; comparing to judge whether the measured magnetic field intensity (M2) of the first low-frequency (F2) radio signal is larger than the calibration starting magnetic field intensity threshold (Tm2); if so, determining the card-reading permission magnetic field threshold (M2gate) according to a very-low frequency (F3); judging whether the magnetic field intensity (M2) is higher than the magnetic field intensity threshold (M2gate) or not, and is so, executing mobile payment by the aid of a high frequency (F1) radio signal. The high frequency (F1) is higher than 80MHz, the first low frequency (F2) ranges from 2KHz to 50 KHz, and the very-low frequency (F3) ranges from 2Hz to 2KHz. The method and the device for distance-controllable mobile payment have the advantages that the card-reading permission magnetic field intensity threshold (M2gate) is set automatically, the set card reading distance is accurate, and safety in payment is guaranteed.

Description

Apart from controlled method of mobile payment and device
Technical field the present invention relates to a kind of E-Payment technology, particularly relate to a kind of utilize mobile terminal to carry out paying method and device, can be used in on-the-spot small amount payment field.
Background technology is universal along with mobile phone, and the business demand of mobile payment (being mainly mobile-phone payment) is very urgent.In the various application of mobile payment, wherein the convenience of the small amount payment of on-site payment is subject to the welcome of user.The basic demand of mobile small amount payment (the general standard using stored value card) is easy to use and safety.One of convenience requirement of small amount payment can complete delivery operation very quickly, in the use of such as subway, because people's current density is large, require the operation realizing deduction (or return) subway fare in 0.3 second, completing delivery operation quickly also facilitates passenger to pass in and out lock, to avoid subway gate mouth to accumulate a large amount of passenger, save the time of passenger.One of security requirement of small amount payment is, consumer only has and just can be deducted the fee time (such as within 10cm) within the pos machine safe distance by Payment Card (or mobile phone), consumer can know consumption number in time simultaneously, and consumer record inventory can be inquired about at any time, to avoid arbitrary imposition of fees problem afterwards.The mass transit card of current use 13.56MHzRFID scheme has been widely used in subway public transport etc., but also exposes safety issue, such as, during public transport pays, has had report, in the public bus network that some individual contracts, there is ticket seller's excess of rates problem.Due to current mass transit card cannot show toll amount, also consumption inventory cannot be inquired about, and other querying method hell to pays.Thus ticket seller utilizes most of passenger never to see or does not see the defect of riding fee, carries out excess of rates, even intentional fee register display is blocked after, then excess of rates.And universal mobile phone has LCDs and keyboard, can check payment inventry at any time, thus, the following small amount payment realized by mobile phone can accomplish safety.
There is a variety of mobile payment scheme realized on a cellular telephone at present.The mainly scheme of 13.56MHz and RF-sim (Radio Frequency Sim) scheme.The scheme of 13.56MHz mainly contains: NFC (Near Field Communication) scheme, simpass (technical scheme of Beijing Watch Data System Co., Ltd's exploitation) scheme, eNFC scheme (enhancement mode NFC) etc.These schemes respectively have relative merits.Such as: NFC solution security reliability is better, but needs custom-made mobile phone, promotes the use of cost high.Simpass scheme does not need custom-made mobile phone, but reliability has problem, easily damages.RF-sim scheme, do not need replacing mobile phone, reliability also high but the distance poor controllability of delivery operation, security has problem.Be stuck in difference in different terminals to solve RF-sim, Chinese patent CN101330334A, discloses a kind of technology using calibration, terminal first carry out before using the method for calibrating to eliminate RF-sim be stuck in use in various terminal time range observation difference.But, need during calibration to use special calibrating installation, if after user changes terminal, before swiping the card, do not find calibrating installation just cannot use.
Summary of the invention technical matters to be solved by this invention does not need special calibrating installation for the distance of delivery operation, can the controlled method of mobile payment of the distance of automatic calibration delivery operation distance and device.
The present invention solve the technical problem can by realizing by the following technical solutions:
Propose a kind of apart from controlled method of mobile payment, comprise the following steps:
1. the multiband integrated circuit card in mobile terminal near multiband reader device, the magnetic field intensity M2 of the measure that described multiband reader device sends first very low frequency F2 radio signal;
2. multiband integrated circuit card judges whether its inside has recorded a magnetic field intensity threshold value M2gate allowing to swipe the card; If do not record the magnetic field intensity threshold value M2gate allowing to swipe the card, do not swipe the card;
If 3. multiband integrated circuit card inside does not record the magnetic field intensity threshold value M2gate allowing to swipe the card, then the magnetic field intensity M2 of the record described first very low frequency F2 radio signal is calibrated magnetic field intensity thresholding Tm2 compare with startup by described multiband integrated circuit card, if the magnetic field intensity M2 of the described first very low frequency F2 radio signal is greater than when starting calibration magnetic field intensity thresholding Tm2, then automatically start calibration flow process, namely the magnetic field intensity threshold value M2gate allowing to swipe the card is determined, comprise step
A. multiband integrated circuit card and multiband reader device carry out authentication;
B. multiband integrated circuit card measures the magnetic field intensity M3 of the extremely low frequency F3 radio signal that multiband reader device sends;
C. the magnetic field intensity threshold value M2gate allowing to swipe the card is calculated, the magnetic field intensity M3 that the average field strength value M3ave allowing the magnetic field intensity threshold value M2gate swiped the card to equal the extremely low frequency F3 radio signal in set distance of on average swiping the card that multiband reader device sends deducts extremely low frequency F3 radio signal adds the magnetic field intensity M2 sum of the first very low frequency F2 radio signal recorded, namely
The average field strength value M3ave of magnetic field intensity threshold value M2gate=extremely low frequency F3 radio signal
The magnetic field intensity M3 of-extremely low frequency F3 radio signal
The magnetic field intensity M2 of the+the first very low frequency F2 radio signal;
4. multiband integrated circuit card judge measured by the magnetic field intensity M2 of the first very low frequency F2 radio signal whether be greater than the magnetic field intensity threshold value M2gate allowing to swipe the card;
If 5. the magnetic field intensity M2 of the measured first very low frequency F2 radio signal is greater than the magnetic field intensity threshold value M2gate allowing to swipe the card, then multiband integrated circuit card and multiband reader device carry out authentication;
6. authentication is passed through, and carries out mobile payment swipe the card by higher frequency F1 radio signal;
Described higher frequency F1 is greater than 80MHz, and first very low frequency F2 is between 2KHz to 50KHz, and extremely low frequency F3 is between 2Hz to 2KHz.
In step authentication 6. by carrying out before mobile payment swipes the card afterwards, the acceleration analysis processing module of multiband integrated circuit card measures the acceleration of multiband integrated circuit card, identifies the confirmation action of swiping the card of holder.
Described multiband integrated circuit card and multiband reader device carry out authentication and comprise step:
A. the radio signal of multiband integrated circuit card the second very low frequency F4 of receiving that multiband reader device sends, this radio signal comprises multiband integrated circuit card and to communicate with multiband reader device the numerical value of the higher frequency F1 used and the identity information IDr of multiband reader device;
The numerical value of higher frequency F1 in the radio signal of b. the second very low frequency F4 described in multiband integrated circuit card demodulating and decoding and the identity information IDr of multiband reader device;
C. multiband integrated circuit card transmission frequency be the RI radio intelligence of higher frequency F1 to multiband reader device, request calibration flow process or mobile payment, the RI radio intelligence of this higher frequency F1 comprises the identity information IDr of multiband reader device;
D., after multiband reader device receives the RI radio intelligence of this higher frequency F1 and checking identity information IDr is wherein correct, calibration flow process is carried out between multiband integrated circuit card and multiband reader device or mobile payment is swiped the card.
For measure the radio signal of magnetic field intensity first very low frequency F2 and the radio signal for communicating second very low frequency F4 is identical.
For measure the radio signal of magnetic field intensity first very low frequency F2 and the radio signal for communicating second very low frequency F4 is different, described second very low frequency F4 be greater than the first very low frequency F2.
The constant amplitude of the first very the magnetic field intensity M2 of low frequency F2 radio signal and magnetic field intensity M3 of extremely low frequency F3 radio signal that described multiband reader device is launched, amplitude does not change in time.
Design a kind of multiband reader device, comprise reader device control module, wireless receiving and dispatching processing module and interface circuit; Described wireless receiving and dispatching processing module comprises
High-frequency band transmitting-receiving process submodule, is greater than the radiofrequency signal of 80MHz for transmitting and receiving frequency;
Low frequency frequency range process submodule, for launching very low-frequency radio signal of 2KHz to 50KHz, and launches very low-frequency radio signal of carrying data message of 2KHz to 150KHz; And
Extremely low frequency frequency range process submodule, for launching the radio signal of the extremely low frequency of 2Hz to 2KHz.
Described high-frequency band transmitting-receiving process submodule comprises again high frequency transmitting-receiving treatment circuit and high frequency antenna, described low frequency frequency range process submodule and extremely low frequency frequency range process submodule comprise again first very low frequency F2 magnetic field intensity signal generate digital signal processing module, second very low frequency F4 radio coding modulation generate digital signal processing module, the magnetic field intensity signal of extremely low frequency F3 generates digital signal processing module, low frequency and extremely low frequency D/A converter, low frequency and extremely low frequency driver and low frequency and extremely-low frequency antenna, described low frequency and extremely low frequency driver are electrically connected with low frequency and extremely low frequency D/A converter and low frequency and extremely-low frequency antenna respectively, described first very low frequency F2 magnetic field intensity signal generate digital signal processing module, second very low frequency F4 radio coding modulation generate digital signal processing module, the magnetic field intensity signal of extremely low frequency F3 generates digital signal processing module and is electrically connected with low frequency and extremely low frequency D/A converter respectively.
Design a kind of multiband integrated circuit card, the process carrying out radio signal is coordinated with multiband reader device, comprise control module, wireless receiving and dispatching processing module, function of swiping card module and wireline interface, described control module is electrically connected with wireless receiving and dispatching processing module, function of swiping card module and wireline interface respectively, and described wireless receiving and dispatching processing module comprises
High-frequency band transmitting-receiving process submodule transmitting-receiving frequency is greater than the radiofrequency signal of 80MHz, uses the radio of higher frequency F1 to carry out the exchange of two-way data message with multiband reader device;
Low frequency frequency range process submodule, receive the very low-frequency wireless magnetic field intensity information of the 2KHz to 50KHz that multiband reader device is launched, and receive the radio signal of the 2KHz to 150KHz that multiband reader device is launched and demodulating and decoding data message wherein; And
Extremely low frequency frequency range process submodule, receives the wireless magnetic field intensity information that multiband reader device launches the extremely low frequency of 2Hz to 2KHz.
Described multiband integrated circuit card also comprises the acceleration analysis processing module be electrically connected with control module, this acceleration analysis processing module comprises acceleration treatment circuit and acceleration transducer, for measuring the acceleration of multiband integrated circuit card, identify the confirmation action of swiping the card of holder.
Described high-frequency band transmitting-receiving process submodule comprises again high frequency transmitting-receiving treatment circuit and high frequency antenna, described low frequency frequency range process submodule and extremely low frequency frequency range process submodule comprise again first very low frequency F2 magnetic field intensity measure digital processing circuit, the wireless receiving digital processing circuit of the second very low frequency F4, the magnetic field intensity of extremely low frequency F3 measures digital processing circuit, low frequency and extremely low frequency A/D converter, low frequency and extremely low frequency amplifier and low frequency and extremely-low frequency antenna, described low frequency and extremely low frequency amplifier are electrically connected with low frequency and extremely low frequency A/D converter and low frequency and extremely-low frequency antenna respectively, described first very low frequency F2 magnetic field intensity measure digital processing circuit, the wireless receiving digital processing circuit of the second very low frequency F4, the magnetic field intensity of extremely low frequency F3 is measured digital processing circuit and is electrically connected with low frequency and extremely low frequency A/D converter respectively.
Compared with the existing technology comparatively, technique effect of the present invention is: the distance setting allowing to swipe the card multiband integrated circuit card near multiband reader device time automatically set, do not need special setting utility appliance, do not need the artificial special setting operation process controlled; The distance of swiping the card of automatic setting is accurate, can guarantee safety of payment.
Accompanying drawing explanation
The relation curve (theory calculate) of the relative magnetic field strength that the desirable coil of Fig. 1 to be radius be 3cm produces in free space and distance x;
The relation curve of relative magnetic field strength and distance x in the air that Fig. 2 is radius is 4cm, wire diameter is 0.3mm, the enamel wire coil (see Fig. 3) of 50 circles produces at the simple harmonic wave electric current of different frequency, the magnetic field intensity of distance x=0cm is the 0db reference value under corresponding test frequency, and magnetic field receiving sensor coil is the rectangle pcb coil (see Fig. 4) of wide 3 circles of long 15mm of 25mm;
The enamel wire coil of Fig. 3 to be radius be 4cm, wire diameter 0.3mm, 50 circles;
Fig. 4 is the rectangle pcb coil of wide 3 circles of the long 15mm of 25mm;
Fig. 5 is as the simple harmonic wave electric current of the enamel wire coil in Fig. 3 at different frequency produces, be relative magnetic field strength in nokiaE50 mobile phone and the relation curve of distance x in model, the magnetic field intensity of distance x=2cm is that (handset size is greater than coil dimension for 0db reference value under corresponding test frequency, mobile phone can not be positioned over hub of a spool point, can only be positioned over above coil), pcb coil is as shown in Figure 4 positioned over sim card position in mobile phone;
Fig. 6 is as the simple harmonic wave electric current of the enamel wire coil in Fig. 3 at different frequency produces, be relative magnetic field strength in anycallS5230c mobile phone and the relation curve of distance x in model, the magnetic field intensity of distance x=2cm is that (handset size is greater than coil dimension for 0db reference value under corresponding test frequency, mobile phone can not be positioned over hub of a spool point, can only be positioned over above coil), pcb coil is as shown in Figure 4 positioned over sim card position in mobile phone;
Fig. 7 is that enamel wire coil produces at the simple harmonic wave electric current of different frequency as shown in Figure 3, be relative magnetic field strength in xdc5310 mobile phone and the relation curve of distance x in model, the magnetic field intensity of distance x=2cm is that (handset size is greater than coil dimension for 0db reference value under corresponding test frequency, mobile phone can not be positioned over hub of a spool point, can only be positioned over above coil), pcb coil is as shown in Figure 4 positioned over sim card position in mobile phone;
Fig. 8 is that enamel wire coil as shown in Figure 3 produces at the simple harmonic wave electric current of different frequency, be relative magnetic field strength in motoV8 mobile phone and the relation curve of distance x in model, the magnetic field intensity of distance x=2cm is that (handset size is greater than coil dimension for 0db reference value under corresponding test frequency, mobile phone can not be positioned over hub of a spool point, can only be positioned over above coil), magnetic field receiving sensor coil is as shown in Figure 4 positioned over sim card position in mobile phone;
Fig. 9 is relative to free space, and at several locus point, the mobile phone of nokiaE50 affects variable quantity curve to the simple harmonic wave magnetic field intensity of multiple frequency;
Figure 10 is relative to free space, and at several locus point, the mobile phone of anycallS5230c affects variable quantity curve to the simple harmonic wave magnetic field intensity of multiple frequency;
Figure 11 is relative to free space, and at several locus point, the mobile phone of xdc5310 affects variable quantity curve to the simple harmonic wave magnetic field intensity of multiple frequency;
Figure 12 is relative to free space, and at several locus point, the mobile phone of motoV8 affects variable quantity curve to the simple harmonic wave magnetic field intensity of multiple frequency;
Figure 13 is that the present invention is apart from controlled method of mobile payment card-punching system block diagram used;
Figure 14 is the functional-block diagram of multiband integrated circuit card of the present invention;
Figure 15 is the functional-block diagram of multiband reader device of the present invention;
Figure 16 is the functional-block diagram of described multiband integrated circuit card preferred embodiment;
Figure 17 is the functional-block diagram of described multiband reader device preferred embodiment;
Figure 18 is the process flow diagram of the present invention apart from controlled method of mobile payment.
Embodiment below in conjunction with accompanying drawing shownschematically preferred embodiment be described in further detail.
The definition of several noun: integrated circuit card refers in card and is packaged with integrated circuit, in order to the electronic product of Storage and Processing data.Integrated circuit card as herein described comprises following product: SD card (Secure Digital Memoty Card), mmc card (MultiMedia Card), memory stick (Memory Stick), SM card (SmartMedia), SIM card (Subscriber IdentityModule), usim card (UniversalSubscriber Identity Module), UIM card (User Identity Model).Multiband integrated circuit card refers to that the supporting multiband reader device of the radio frequency band of use more than 3 or 3 and the external world carries out the integrated circuit card of radio communication.Mobile terminal: lighter in weight, can from powered battery, to be connected just operable electronic equipment with other electronic equipments without cable.Mobile terminal as herein described comprises following electronic equipment: MP3 player, handheld device, GPS, PDA (Personal Digital Assistant), digital camera, electronic dictionary, hand-held cashing machine etc.Swiping the card is the communication of integrated circuit card and reader device and the exchange process of data message, and in process in integrated circuit card data message establishment, storage, amendment, reading, verify, compare, process.The identity identifying and authenticating process comprising and pay by mails and swipe the card and swipe the card with gate inhibition and block of swiping the card as herein described.The operation of swiping the card using the card-punching system of the present invention's composition to realize can ensure only just can swipe the card in the distance of safety by automatic calibration.
The ultimate principle realizing just can swiping the card in the distance of requirement is:
Multiband reader device uses coil around it, produce very low-frequency field signal, and distance multiband reader device is far away, and magnetic field intensity is less.Integrated circuit card is when multiband reader device, and distance is nearer, measures the magnetic field intensity obtained stronger, and it is more weak that distance far measures the magnetic field intensity obtained.Integrated circuit card judges the distance with multiband reader device according to the magnetic field intensity recorded, thus determine with multiband reader device whether in the distance allowing to swipe the card according to the magnetic field intensity recorded, if just allow to swipe the card in the distance required, thus the security that guarantee is swiped the card.This magnetic field must be very low-frequency magnetic field, if radio-frequency (RF) magnetic field, because frequency is very high, spatially certain point decrease of magnetic field intensity and the distance of multiband reader device increases between relation instability, fluctuate larger.Particularly inner at different mobile terminals, although with in the same distance of multiband reader device, the high-frequency magnetic field strength differences of different mobile terminal inside is very large.The magnetic field intensity that energising circular coil produces, be on the free space point of x at the vertical line of hub of a spool and hub of a spool point distance, if the electric current of coil is I, coil turn is N, coil radius is R, the magnetic field intensity that coil current produces is H (x), and result (method of Biot-Savart law and integral and calculating H (x) the please refer to Theory of Electromagnetic Field) formula according to Theory of Electromagnetic Field Biot-Savart law integral and calculating H (x) is:
H ( x ) = NIR 2 2 ( x 2 + R 2 ) 3 / 2
Visible, along with the increase of distance x, magnetic field intensity H (x) can reduce.
Be the coil of 1A according to above-mentioned formulae discovery radius R=3cm, a number of turn N=50, coil current, (minimum with the difference of free space in air in free space, it is identical for can regarding as with free space), with on the axis of coil place plane orthogonal, with hub of a spool point distance for the magnetic field intensity at x place is H (x), H (x) reduces along with the increase of distance x, the relation curve of change of magnetic field strength amount and distance x, the calculated results as shown in Figure 1.In figure, transverse axis is the distance x of measured point and hub of a spool, and unit is cm, and vertical pivot is the result that the db number of the magnetic field intensity of this point subtracts each other with the db number of the magnetic field intensity of distance x=ocm point, namely relative to the db number of the magnetic field intensity of x=ocm point.
By theory calculate, if coil current is not direct current but the simple harmonic wave alternating current of a certain fixed frequency, in fact whether the variation relation of its magnetic field intensity also should as shown in Figure 1, like this? actual test result curve below can draw some related conclusions.
Radius is about 4cm, wire diameter 0.3mm, the enamel wire coil (see Fig. 3) of 50 circles is under the simple harmonic wave excitation current of different frequency, the change of magnetic field strength amount of simple harmonic wave produced and the relation curve of distance x are shown in Fig. 2 (actual test result), the magnetic field intensity of distance x=0cm is the 0db reference value under corresponding test frequency, magnetic field receiving sensor coil is that the shape of wide 3 circles of long 15mm of 25mm is roughly rectangular pcb coil (see Fig. 4), during measurement, transmitting coil is parallel with receiving coil, the center of receiving coil is on the central axis of transmitting coil, the centre distance of two coils is x.From measured curve Fig. 2, under the condition of simple harmonic wave electric current that the frequency of the electric current of field-generating coil is 50Hz to 60KHz, almost it doesn't matter for the relative variation db number of the magnetic field intensity in air between different spaces point and frequency, and namely the magnetic field intensity at the spatial point place of distance x is relative to the variable quantity of the magnetic field intensity at distance 0cm point place and frequency irrelevant (50Hz to 60KHz frequency range is interior).From the analysis of Theory of Electromagnetic Field, when frequency is lower, this conclusion is still correct.But when frequency is very high, due to launch magnetic field enamel wire coil between the impact of distributed capacitance equal distribution parameter, actual test result error can increase, and that is when frequency is very high, the test result that Practical Project realizes has larger error.In curve, x=2cm is relative to the variable quantity (Fig. 2) at x=0cm place larger than the variable quantity of desirable coil (see Fig. 1), its reason is that transmitting coil has thickness, receiving coil neither put coil, the outer edge of receiving coil and the nearest edge of transmitting coil are far smaller than the distance between desirable coil, so actual magnetic field strength when x=0cm is much larger than the calculated value of desirable coil.So measured result remains meet Theory of Electromagnetic Field.The size (magnetic field intensity relative to x=0cm place) of the change of magnetic field strength amount in the spatial point outside transmitting coil axis also has nothing to do with frequency (the simple harmonic wave electric current being less than 60KHz), and this point also can draw from theoretical analysis.
If not in atmosphere, and inner at mobile terminal, and conclusions is also in the main true.The test result curve of Fig. 5 to be mobile phone model be nokiaE50, the test result curve of the test result curve of the test result curve of Fig. 6 to be mobile phone model be anycallS5230c, Fig. 7 to be mobile phone model be xdc5310, Fig. 8 to be mobile phone model be motoV8.From Fig. 5 to Fig. 8, the mobile phone test result of other models and theoretical analysis can draw to draw a conclusion:
Conclusion 1: use multiturn coil to excite the magnetic field intensity of generation, when the frequency of excitation current is the simple harmonic wave of certain frequency very low-frequency, coil near its circumference 2 position p1 and p2 can produce the simple harmonic wave magnetic field of same frequency, if certain point of fixity P3 in a mobile terminal to be moved to p1, p2 2 point, allow P3 overlap with p1, p2 respectively, measure two magnetic field intensity H1, H2 when point P3 and p1, p2 overlap in this mobile terminal respectively.The db value of the ratio of H1 and H2, for most of mobile terminal, particularly most of mobile phone terminal, when when coil current frequency is very low, particularly frequency is lower than 50KHz, this ratio substantially constant, substantially irrelevant with frequency, frequency is lower, and this ratio is more stablized constant.As can be seen from Fig. 7, be the mobile phone of xdc5310 for model, when frequency is 60KHz, described ratio is obviously different from the situation of other low frequencies.
In more several different mobile phone, the magnetic field receive coils of SIM card position, at same magnetic field emitting coils, uses some Frequency below, but the magnetic field strength characteristics that the same spatial point in the magnetic field that identical simple harmonic wave electric current excites receives.The characteristic of the magnetic field intensity being the spatial point of x on transmitting coil central shaft in Fig. 9,10,11,12 with transmitting coil centre distance, the enamel wire coil (see Fig. 3) of transmitting coil to be radius be 4cm, wire diameter 0.3mm, 50 circles, magnetic field receiving sensor coil is that the wide 3 circle shapes of long 15mm of 25mm are roughly rectangular pcb coil (see Fig. 4).The 0db reference point of magnetic field intensity in figure, when there is no mobile terminal, in air, the magnetic field intensity of this spatial point is 0db reference point, so, on curve, the value of vertical pivot is then: relative to the change of the magnetic field intensity during free space when the same space point has a mobile terminal, also the i.e. negative of the damping capacity db value of magnetic field intensity that causes of mobile terminal.From Fig. 9 to Figure 12, the mobile phone test result of other models and theoretical analysis can draw to draw a conclusion:
Conclusion 2: for most of mobile terminal, particularly most of mobile phone terminal, when the simple harmonic wave power frequency that field-generating coil flows through is very low, when particularly frequency is less than 50KHz, mobile terminal is substantially irrelevant to the position residing for the damping capacity of magnetic field intensity and mobile terminal, only and frequency dependence.The lower damping capacity of frequency is less, and frequency more high attenuation is larger.
From Fig. 9 to Figure 11, the mobile phone test result of other models and theoretical analysis can draw to draw a conclusion:
Conclusion 3: when the simple harmonic wave power frequency that field-generating coil flows through is extremely low, when being particularly less than 2KHz, mobile terminal is not almost decayed to magnetic field intensity, and its damping capacity is less than 6db substantially.
Following inference can be obtained by conclusion 1,2,3:
Inference 4: the difference of mobile terminal to the damping capacity of different two very low-frequency simple harmonic wave magnetic field intensitys is constant, substantially irrelevant with mobile terminal present position.
Conclusion 1,2,3 and inference 4 are set up certain qualifications, is mainly:
In a, air at the earth's surface, under air pressure is about 0.5 to 1.5 atmospheric pressure.
B, environment temperature are between 0 to+50 degrees Celsius.
C, magnetic excitation electric current are the simple harmonic waves that frequency is less than 50KHz.
D, only for most of mobile terminal, under the condition of particularly most of mobile phone, conclusion and inference correct.Can not ensure all mobile terminal conclusions and inference are all set up.
The size value of e, field-generating coil size is far smaller than the wavelength value that in coil, power frequency value is corresponding.
F, field-generating coil are multiturn coil, and coil dimension can not be too much less than mobile phone.
Qualifications is equal to people and normally uses mobile terminal particularly normally to use the environment of mobile phone, and the coil producing low frequency magnetic field in multiband reader device is also size under normal circumstances.
According to conclusions, following mobile terminal brushing card device system can be designed, and this system is applicable to the use of most of mobile terminal under normally condition.
First to determine to allow farthest to swipe the card distance Dmax and the numerical value of distance Dmin that must can swipe the card recently according to the safety requirements of application, such as generally the subway pos machine distance Dmax that swipes the card farthest is 10cm, and the nearest distance Dmin that must be able to swipe the card is 5cm.Then determine the distance Dave=(Dmax+Dmin)/2 that on average swipes the card, general subway is applied, Dave=7.5cm.
Design a multiband reader device, the multiband reader device that all distribution use can transmit and receive the radiofrequency signal being greater than 80MHz, radio frequency frequency is F1, and multiband reader device environmentally radio-frequency spectrum can take the frequency values of situation from Row sum-equal matrix higher frequency F1.Multiband reader device uses higher frequency F1 launch and accept data message.The wherein method and technology of radio communication, i.e. modulation /demodulation, coding and decoding and communications protocol etc., can use the telecommunications methods of existing various maturation, also can needing self-defining and improving one's methods according to application.
The multiband reader device that all distribution use can also produce the radio signal of the first very low frequency F2 launching 2KHz to 50KHz, the radio signal of the it is produced first very low frequency F2 is in multiband reader device surrounding air, apart from multiband reader device distance for magnetic field intensity during Dave is about about M2ave, the average field strength value of the first very low frequency (F2) radio signal in set distance of on average swiping the card that M2ave refers to that multiband reader device sends.The locus necessarily can not swiped the card of Dmax is being greater than apart from multiband reader device distance, the magnetic field intensity of the first very low frequency F2 is less than M2min, and M2min refers to that multiband reader device that all distribution use is emitted in distance and is greater than Dmax and necessarily can not swipes the card the maximal value of the first very magnetic field intensity M2 of low frequency F2 radio signal at place.In the locus that the certain needs being less than Dmin apart from multiband reader device distance are swiped the card, the magnetic field intensity of the first very low frequency F2 is greater than M2max, and M2max refers to that multiband reader device that all distribution use is emitted in distance and is less than Dmin and necessarily needs to swipe the card the minimum value of the first very magnetic field intensity M2 of low frequency F2 radio signal at place.The multiband reader device that all distribution use can also produce launches 2KHz to 150KHz and the radio signal can carrying the second very low frequency F4 of data message, the numerical value of the higher frequency F1 using the radio signal transmission multiband reader device of the second very low frequency F4 using and other data messages.The wireless data transferring method technology of the second very low frequency F4, i.e. modulation /demodulation, coding and decoding and communications protocol etc., can use the telecommunications methods of existing various maturation, also can needing self-defining and improving one's methods according to application.Second very low frequency F4 and first very low frequency F2 also can use same frequency, use same low frequency signal both to transmit magnetic field intensity information also transfer data information.
The multiband reader device that all distribution use can produce the radio signal of the extremely low frequency F3 launching 2Hz to 2KHz, the radio signal of the extremely low frequency F3 that it is produced is in multiband reader device surrounding air, magnetic field intensity when being Dave apart from multiband reader device distance is about M3ave, and M3ave refers to the average field strength value of the extremely low frequency F3 radio signal in set distance of on average swiping the card that multiband reader device sends.The locus necessarily can not swiped the card of Dmax is being greater than apart from multiband reader device distance, the magnetic field intensity of extremely low frequency F3 is less than M3min, and M3min refers to that multiband reader device that all distribution use is emitted in distance and is greater than Dmax and necessarily can not swipes the card the maximal value of magnetic field intensity M3 of extremely low frequency F3 radio signal at place.In the locus that the certain needs being less than Dmin apart from multiband reader device distance are swiped the card, the magnetic field intensity of extremely low frequency F3 is greater than M3max, and M3max refers to that multiband reader device that all distribution use is emitted in distance and is less than Dmin and necessarily needs to swipe the card the minimum value of magnetic field intensity M3 of extremely low frequency F3 radio signal at place.
Bamboo product and the supporting multiband integrated circuit card of described multiband reader device, it can coordinate multiband reader device to carry out the process of following radio signal:
The multiband integrated circuit card that all distribution use, can receive and dispatch the radiofrequency signal of higher frequency F1, use the radio signal of higher frequency F1 to carry out the exchange of bi-directional data information with multiband reader device.The wherein method and technology of radio communication, i.e. modulation /demodulation, coding and decoding and communications protocol etc. will conform to multiband reader device.
The multiband integrated circuit card that all distribution use, can receive the magnetic field intensity information of the first very radio signal of low frequency F2 that multiband reader device is launched.The radio signal of the second very low frequency F4 that multiband reader device is launched can be received, and demodulating and decoding data message wherein.
The multiband integrated circuit card that all distribution use, can receive the magnetic field intensity information of the radio signal of the extremely low frequency F3 that multiband reader device is launched.
The present invention uses the system scheme of multiband integrated circuit card and supporting multiband reader device composition can accomplish that low cost can ensure again to swipe the card in the distance required.The present invention program is used not need custom-made mobile phone, only need multiband integrated circuit card to insert in mobile phone (or other mobile terminals), coordinate the pos machine being provided with multiband reader device can realize the application of swiping the card in the mobile payment required in distance.The present invention also can be applied to other occasion and swipe the card, and such as gate inhibition swipes the card.
Use above-mentioned card-punching system, multiband integrated circuit card can measure the distance with multiband reader device, and if the distance is too far just forbids swiping the card, thus ensures the security that mobile phone users is swiped the card.
Multiband integrated circuit card (such as multiband sim card) itself does not belong to mobile terminal, multiband integrated circuit card, except can being installed in mobile terminal (such as mobile phone) and using, also can be installed in other immobile terminal (such as USB card reader) and use.
The card-punching system of the present invention's composition mainly contains 4 parts, sees Figure 13:
Multiband integrated circuit card 1, multiband reader device 2, mobile terminal 3 and card reader main circuit 6, wherein multiband reader device 2 and card reader main circuit 6 form card reader 5.Multiband integrated circuit card 1 is connected with contact with plain conductor with mobile terminal 3, and namely wireline interface connects mobile terminal 3 and multiband integrated circuit card 1.Multiband integrated circuit card 1 and mobile terminal 3 can carry out data message communication by wireline interface, and mobile terminal 3 can be supplied to multiband integrated circuit card 1 by wireline interface and to work required power supply.Under general service condition, user 4 hand-held mobile terminal 3 is mobile mobile terminal 3 initiatively, and now, multiband integrated circuit card 1 also and then moves together.
The multiband integrated circuit card 1 with acceleration analysis processing module can measure the acceleration change of self, thus can identify the specific action of user 4.This specific action may be used for the confirmation of user 4 to operation of swiping the card.Acceleration analysis processing module is the optional module of multiband integrated circuit card, is not must module.
There are signal and power supply to be connected between card reader main circuit 6 with multiband reader device 2, generally, supplied the working power of multiband reader device 2 by card reader main circuit 6.Multiband reader device 2 and card reader main circuit 6 carry out swiping the card etc. the exchange of information data.When swiping the card, multiband reader device 2 is connected by wave point with multiband integrated circuit card 1, carries out the exchange of information data with multiband integrated circuit card 1.Wave point between multiband reader device 2 and multiband integrated circuit card 1 is: wireless receiving and dispatching processing module.The radio signal of wireless receiving and dispatching processing module process 3 frequency ranges.
As shown in figure 14, the multiband integrated circuit card 1 in the present invention comprises control module 15, wireline interface 11, wireless receiving and dispatching processing module 12, function of swiping card module 13, optional acceleration analysis processing module 14.Control module 15 can realize the various functions of custom integrated circuit card.Custom integrated circuit card comprises SD card (Secure Digital Memory Card), mmc card (MultiMediaCard), memory stick (Memory Stick), SM card (SmartMedia), SIM card (Subscriber IdentityModule), usim card (Universal Subscriber Identity Module), UIM card (User Identity Model).Control module 15 is connected with wireline interface 11, is connected and optional acceleration analysis processing module 14 is electrically connected with wireless receiving and dispatching processing module 12, function of swiping card module 13.Control module 15 is containing CPU and storer and software program.Multiband integrated circuit card 1 is connected with outside mobile terminal by wireline interface 11.Wireline interface 11 is made up of wire and contact, is responsible for carrying out data information exchange with outside mobile terminal, and provides working power can to multiband integrated circuit card 1.Wherein the method for wire communication can use the wired communication methods technology of existing various maturation, also according to applying the Method and Technology needing self-defining new, such as can use the method in ISO7816 standard and agreement.Wireless receiving and dispatching processing module 12 is connected with control module 15, be responsible for carrying out bi-directional data message exchange with outside multiband reader device 2, whether wireless receiving and dispatching processing module 12 is also responsible for receiving and is measured and judge with the distance of multiband reader device 2 in the distance that can swipe the card safely according to the magnetic field intensity that records.Wireless receiving and dispatching processing module 12 is received and dispatched process submodule 121, low frequency frequency range process submodule 122 and extremely low frequency frequency range process submodule 123 by high-frequency band and is formed.Function of swiping card module 13 is a software module mainly, is made up of the cpu in integrated circuit card and memory program etc., to be coordinated that jointly completing swipes the card operates under the control of cpu and program by each interface with outside multiband reader device 2 and mobile terminal.
Optional acceleration analysis processing module 14 is made up of acceleration transducer and treatment circuit, can measure the acceleration of multiband integrated circuit card 1, by the extraction to acceleration change feature, thus can judge the specific action of holder.This specific action may be used for the confirmation of holder to operation of swiping the card.
What high-frequency band transmitting-receiving process submodule 121 received and dispatched process is the radio signal that frequency range is greater than 80MHz.Receive and dispatch treatment circuit 1211 by high frequency antenna 1212 and high frequency to form, communication can be coordinated with supporting multiband reader device 2, wherein the method and technology of radio communication can use (comprising the technology of antenna) the telecommunications methods technology of existing various maturation, also can need self-defining according to application and improve one's methods.Wherein antenna technology can use various existing ripe antenna technology, as long as be conducive to the performance of product, according to the development of antenna technology, also can use up-to-date antenna technology.Can preferentially select 2.4GHz frequency range as the actualizing technology of high-frequency band radio frequency centre frequency at present, such as integrated circuit nRF24L01 just higher cost performance can realize the communication of 2.4GHz frequency range.
Low frequency frequency range process submodule 122 receives the radio signal that process frequency range is the first very low frequency F2 of 2KHz to 50KHz.Low frequency frequency range process submodule receives only radio signal and does not send radio signal.Low frequency frequency range process submodule receives the time-independent field signal of constant amplitude that measuring center frequency is the first very low frequency F2.Various countries' radio spectrum management does not specify the wireless field intensity restriction allowing to use lower than 9KHz, major part mechanism for testing is not also lower than testing apparatus and the testing standard of the radiation limit value of 9KHz, therefore the test report whether radio radiation meets national standard cannot be obtained, use lower than 9KHz radio for product to promote the use of difficulty very large, although can actively and the government of every country link up, obtain the use standard lower than the wireless device of 9KHz and license, but its work difficulty is very large, all-round popularization for world community man area uses very difficult.Preferably first very low frequency F2 be greater than 9KHz, and as far as possible low, namely as far as possible close with 9KHz, the signal bandwidth preferred value receiving process first very low frequency F2 is 100Hz.Calibrated multiband integrated circuit card, low frequency frequency range process submodule 122 receives the field strength values M2 that measuring center frequency is the first very low frequency F2, and compare with magnetic field intensity threshold value M2gate, if comparative result allows to swipe the card, just think enough near with multiband reader device distance, in the safe distance allowing to swipe the card, start flow process of swiping the card, otherwise forbid swiping the card, thus realize requiring apart from the interior application demand just can swiped the card.Low frequency frequency range process submodule 122 also receives the radio signal that process frequency range is the second very low frequency F4 of 2KHz to 150KHz.From the radio signal of the second very low frequency F4, demodulating and decoding goes out the data message wherein transmitted, this information is emitted by multiband reader device, wherein there is the identity information IDr of multiband reader device, and the information such as multiband reader device higher frequency F1.Low frequency frequency range process submodule 122 does not need the radio signal of transmission second very low frequency F4.Frequency is the telecommunications methods technology that the radio signal mechanics of communication of the second very low frequency F4 can use existing various maturation, also can needing self-defining and improving one's methods according to application.It is wider that the radio signal of the second very low frequency F4 takies frequency spectrum, and its bandwidth is decided by baud rate and the modulation coding mode of data message.For communication radio signal second very low frequency F4 and for the radio signal of measuring magnetic field intensity first very if low frequency F2 is different, the radio Seize ACK message bandwidth of the second very low frequency F4 can not cover the scope of magnetic field intensity test frequency first very low frequency F2, and the energy of the first very low frequency F2 can not make the wireless signal to noise ratio (S/N ratio) of the second very low frequency F4 obviously reduce, namely to ensure that the radio of the radio that magnetic field intensity is tested and data information transfer can not disturb mutually, its frequency interval is sufficiently large, in prioritization scheme second very low frequency F4 be greater than the first very low frequency F2.For communication radio signal second very low frequency F4 and the radio signal for measuring magnetic field intensity first very if low frequency F2 is identical, low frequency frequency range process submodule 122 is measured and is obtained magnetic field intensity information and demodulating and decoding obtains data message from the radio signal of same centre frequency, at this moment, the bandwidth of low frequency frequency range process submodule 122 is decided by baud rate and the modulation coding mode of data message.Low frequency frequency range process submodule 122 measure magnetic field intensity wireless first very low frequency F2 can determine constant, so conveniently realize different multiband integrated circuit to be stuck on same multiband reader device and normally to use, conveniently realize the compatibility of multiband integrated circuit card.Low frequency frequency range process submodule 122 receiving data information wireless second very low frequency F4 can determine constant, so conveniently realize different multiband integrated circuit to be stuck on same multiband reader device and normally to use, conveniently realize the compatibility of multiband integrated circuit card.
Extremely low frequency frequency range process submodule 123 receives the radio signal that process frequency range is the extremely low frequency of 2Hz to 2KHz.Extremely low frequency frequency range process submodule 123 receives only radio signal and does not send radio signal.Extremely low frequency frequency range process submodule 123 receives the time-independent field signal of constant amplitude measuring extremely low frequency F3.The magnetic field intensity receiving the radio signal measuring extremely low frequency F3 is not needed during normal swipe operation, only after multiband integrated circuit card electrification reset, first time swipes the card before operation, setting first very low frequency F2 allow to swipe the card magnetic field intensity threshold value M2gate operation during, just measure the magnetic field intensity of extremely low frequency F3 radio signal, the setup algorithm of the first very low frequency F2 magnetic field intensity threshold value M2gate of being used for by the field strength values M3 of the extremely low frequency F3 recorded swiping the card operation.Extremely low frequency F3 can determine constant, so conveniently realizes different multiband integrated circuit and is stuck on same multiband reader device and normally uses, conveniently realize the compatibility of multiband integrated circuit card.The preferred version of extremely low frequency F3 is 80Hz, and the preferred version of the process filtering bandwidth of extremely low frequency F3 is about 10Hz.
The radio signal of the first very low frequency F2, extremely low frequency F3 of multiband integrated circuit card process is all the time-independent radio signal of constant amplitude, if first very low frequency F2 is identical with the frequency of the second very low frequency F4, second very low frequency F4 be also the time-independent radio signal of constant amplitude.
Described multiband reader device 2 comprises reader device control module 21, wireless receiving and dispatching processing module 22, interface circuit 23.Reader device control module 21 is connected with wireless receiving and dispatching processing module 22 and interface circuit 23.Reader device control module 21 includes the modules such as CPU storer and software.Reader device control module 21 completes control, operation, communication and the various function such as to swipe the card under the control of cpu and software.Interface circuit 23 is also connected with the card reader main circuit 6 of outside, and interface circuit 23 realizes multiband reader device 2 and the communication of card reader main circuit 6, is also supplied to the working power of multiband reader device 2.Wireless receiving and dispatching processing module 22 mainly completes the two-way radio communication function with the multiband integrated circuit card 1 of outside.Wireless receiving and dispatching processing module 22, primarily of antenna and radio circuit composition, also comprises partial software module.Wherein the method for radio communication can use the telecommunications methods technology of existing various maturation, also can need self-defining according to what apply and improving one's methods, but the method must match with the method for multiband integrated circuit card 1.
Wireless receiving and dispatching processing module 22 is received and dispatched process submodule 221, low frequency frequency range process submodule 222 and extremely low frequency frequency range process submodule 223 by high-frequency band and is formed.High-frequency band transmitting-receiving process submodule 221 processes the radio signal that frequency is greater than 80MHz, uses higher frequency F1 and multiband integrated circuit card 1 to carry out two-way data communication.High-frequency band transmitting-receiving process submodule 221 is received and dispatched treatment circuit 2211 by high frequency antenna 2212 and high frequency and is formed.The wherein method and technology (comprising the technology of antenna) of radio communication, i.e. modulation /demodulation, coding and decoding and communications protocol etc., the telecommunications methods of existing various maturation can be used, also can needing self-defining and improving one's methods according to application.Current technology can preferentially select 2.4GHz frequency range as the actualizing technology of higher frequency F1, and such as integrated circuit nRF24L01 just higher cost performance can realize the communication of 2.4GHz frequency range.Preferred version is that higher frequency F1 can change, and can change higher frequency F1, use the channel of another frequency to carry out communication when the electromagnetic noise that multiband reader device records a certain frequency is very large.Low frequency frequency range process submodule 222 transmission processing frequency range is the low-frequency wireless electric signal of 2KHz to 150KHz.Low frequency frequency range process submodule 222 transmit frequency range is the first very time-independent field signal of low frequency F2 constant amplitude of 2KHz to 50KHz.Preferred first very low frequency F2 be greater than 9KHz, as far as possible close with 9KHz, signal bandwidth about the preferred value 10Hz (or frequency error is in 10Hz) of the first very low frequency F2 of transmission.The field strength values of the first very low frequency F2 that low frequency frequency range process submodule 222 sends: apart from multiband reader device distance for Dave place is about M2ave, being less than M2min when being greater than Dmax apart from multiband reader device distance, being greater than M2max when being less than Dmin apart from multiband reader device distance.The numerical value of M2ave, M2max, M2min needs compromise to consider, can not be too little, the signal to noise ratio (S/N ratio) of the signal that too little multiband integrated circuit card receives is too low, if and field strength value is too large, the volume of multiband reader device or power consumption are too large, are also not easy to meet the requirement of radio regulatory organization to magnetic field intensity limit value.Second low frequency frequency range process submodule 222 also transmission processing frequency range is the radio signal of the second very low frequency F4 of 2KHz to 150KHz.The radio signal of the second very low frequency F4 carries relevant data message, the information such as the identity information IDr of such as multiband reader device and the higher frequency F1 numerical value of multiband reader device.The second very method and technology of the radio signal communication of low frequency F4 and modulation /demodulation, coding and decoding and communications protocol etc., can use the telecommunications methods of existing various maturation, also can needing self-defining and improving one's methods according to application.The bandwidth of the second very radio signal frequency spectrum of low frequency F4 is decided by baud rate and the modulation coding mode of the data that will transmit, and its concrete computing method have had various proven technique, repeat no more here.In a word, the bandwidth of the second very low frequency F4 is decided by the details of application demand.If the first very low frequency F2 and second very low frequency F4 same frequency, so the signal bandwidth of the first very low frequency F2 (second very low frequency F4) is decided by the baud rate that data transmit and modulation /demodulation, coding and decoding mode.If the first very low frequency F2 and second very low frequency F4 same frequency, uses same radio signal both to transmit magnetic field intensity information also transfer data information.If the first very low frequency F2 and second very low frequency F4 different frequency, ensure that the energy of radio signal frequency spectrum in the bandwidth of the first very low frequency F2 of the second very low frequency F4 obviously can not affect the energy of the first very low frequency F2, and the energy of the first very low frequency F2 can not make frequency be that the signal to noise ratio (S/N ratio) of the second very radio signal of low frequency F4 obviously reduces.In preferred version second very low frequency F4 be greater than the first very low frequency F2.Extremely low frequency frequency range process submodule 223 transmission processing frequency range is the radio signal of the extremely low frequency of 2Hz to 2KHz.Extremely low frequency frequency range process submodule 223 sends the time-independent field signal of extremely low frequency F3 constant amplitude.During normal swipe operation, extremely low frequency frequency range process submodule 223 does not need the radio signal sending extremely low frequency F3, only after multiband integrated circuit card electrification reset, first time swipes the card before operation, setting first very low frequency F2 allow to swipe the card magnetic field intensity threshold value M2gate operation during, just need extremely low frequency frequency range process submodule 223 to send the magnetic field intensity signal of extremely low frequency F3.The field strength values of the extremely low frequency F3 that extremely low frequency frequency range process submodule 223 sends, in distance multiband reader device distance for will be about M3ave during Dave, M3min is less than when distance multiband reader device distance is greater than Dmax, want greatly when distance multiband reader device distance is less than Dmin-in M3max.The numerical value of M3ave, M3max, M3min needs compromise to consider, can not be too little, and the signal to noise ratio (S/N ratio) that too little multiband integrated circuit card 1 receives signal is too low, and too greatly, the volume of multiband reader device 2 or power consumption are too large.Extremely low frequency F3 can determine constant, so conveniently realizes different multiband reader devices 2 and normally uses on same multiband integrated circuit card 1, conveniently realize the compatibility of multiband reader device 2.The preferred version of the extremely low frequency F3 that extremely low frequency frequency range process submodule 223 sends is the frequency of 80Hz, and the preferred version of the extremely low frequency F3 bandwidth that extremely low frequency frequency range process submodule 223 sends is about 1Hz.
If multiband integrated circuit card 1 inside has recorded a magnetic field intensity threshold value M2gate allowing to swipe the card, just operation of swiping the card can be started when the magnetic field intensity M2 of the record first very low frequency F2 is greater than magnetic field intensity threshold value M2gate.The setting value of magnetic field intensity threshold value M2gate before multiband integrated circuit card 1 electrification reset of swiping the card is allowed to be invalid.Allow the multiband integrated circuit card 1 that is set in of the magnetic field intensity threshold value M2gate swiped the card automatically to set when multiband reader device 2, do not need special setting utility appliance, do not need the artificial special setting operation process controlled.Because the decay of different mobile terminals to the first very magnetic field intensity of low frequency F2 is different, so when multiband integrated circuit is stuck in different terminals, because the damping capacity Af2 of mobile terminal to the first very magnetic field intensity of low frequency F2 is different, when from card reader same distance, the magnetic field intensity M2 recorded is different, therefore M2 can not be compared with same magnetic field intensity M2ave and determine whether swiping the card, and must compare with M2ave-Af2 and determine whether swiping the card.Make M2gate=M2ave-Af2 for thresholding and the magnetic field intensity threshold value of swiping the card.Multiband integrated circuit card 1 obtains the process of the correct magnetic field intensity threshold value M2gate that swipes the card in mobile terminal, is called calibration process.When the magnetic field intensity that unregulated integrated circuit card records the first very low frequency F2 be greater than start calibration magnetic field intensity thresholding Tm2 time, start calibration process.
The determination procedure starting calibration magnetic field intensity thresholding Tm2 is as follows:
The mobile terminal being used in this card-punching system that needs of a, selected a collection of (about 100) different model is tested;
B, multiband integrated circuit card 1 in mobile terminal with multiband reader device 2 larger distance Dttm2 time, record magnetic field intensity TTm2 that multiband reader device 2 is launched, multiband integrated circuit card 1 position, the first very low frequency F2, and record the numerical value of TTm2 and Dttm2;
C, close the emission of magnetic field of multiband reader device 2, multiband integrated circuit card 1 record first very low frequency F2 be Zf2 in the noise peak of its magnetic field intensity received in bandwidth;
D, now TTm2 must than the Zf2 in mobile terminal large 6db, otherwise, by mobile terminal more near multiband reader device 2, repeat b, c, until the d that satisfies condition;
If e mobile terminal and multiband reader device 2 nearest time still can not to satisfy condition d, need the parameter adjusting multiband reader device 2, increase following 3 field strength values that it is launched: M2ave, M2min, M2max.Then test b, c is again made until the d that satisfies condition;
F, the step of b, c, d, e is repeated to each mobile terminal, obtain the TTm2 of each mobile terminal under identical M2ave, M2min, M2max value condition, get maximal value wherein as startup calibration magnetic field intensity thresholding Tm2;
G, startup calibration magnetic field intensity thresholding Tm2 must be less than M2min, if start calibration magnetic field intensity thresholding Tm2 to be greater than M2min, need the parameter adjusting multiband reader device, increase following 3 field strength values of its transmitting: M2ave, M2min, M2max.Now need the test again all mobile terminals being carried out to b, c, d, e, f, until satisfy condition: start calibration magnetic field intensity thresholding Tm2 and be less than M2min;
When h, test multiband integrated circuit are stuck in all terminals the magnetic field intensity M2=Tm2 recording the first very low frequency F2, be Dttm2 with the distance of multiband reader device, Dttm2 must be greater than Dmin, otherwise increase the value of M2ave, M2min, M2max, retest b, c, d, e, f, g until meet Dttm2 to be greater than Dmin;
Above method is not unique method, and unlimited multiple method in fact can be had to be used for determining starting the value of calibration magnetic field intensity thresholding Tm2, the numerical value of the startup finally determined calibration magnetic field intensity thresholding Tm2, neither the numerical value of unique feasible.And retest test after not needing repeatedly to revise the value increasing M2ave, M2min, M2max during practical operation, can estimate the desired value of M2ave, M2min, M2max according to the data recorded, predictor method repeats no more.But no matter be by which kind of method obtain to start calibration magnetic field intensity thresholding Tm2, startup calibration magnetic field intensity thresholding Tm2 can be allowed to meet following condition:
1, in all terminals of test sample book, start calibration magnetic field intensity thresholding Tm2 6db more than larger than the noise magnetic field intensity in this terminal, this requirement is unlikely to too large for measuring error when ensureing actual use;
2, start calibration magnetic field intensity thresholding Tm2 and be less than M2min, this requires can realize calibration when swiping the card distance farthest for the very little mobile terminal that ensures to decay;
3, in all terminals of test sample book, when terminal and multiband reader device 2 distance are less than Dmin, multiband integrated circuit card place first very low frequency F2 magnetic field intensity M2 must be greater than and start calibration magnetic field intensity thresholding Tm2, this requirement, can be calibrated when being less than Dmin with card reader distance in all test sample book mobile terminals for ensureing;
If 4 application demands are different, the specific requirement numerical value of above 1,2,3 can get different numerical value, even can increase and decrease above condition.
While more than determining to start the method realization of calibrating magnetic field intensity thresholding Tm2, also determine the value of M2ave, M2min, M2max.The determination of the value of M3ave, M3min, M3max is simpler, only need ensure that multiband integrated circuit is stuck in the extremely low frequency F3 recorded in all test sample book mobile terminals receives the magnetic field intensity noise in bandwidth maximal value Zf3 6db more than less of M3min at it, if require stricter, can require that M3min is far longer than maximal value Zf3.
The using method 1 following (see Figure 18) of multiband reader device 2 and multiband integrated circuit card 1:
Apart from a controlled method of mobile payment, comprise the following steps,
1. the multiband integrated circuit card in mobile terminal near multiband reader device, the magnetic field intensity M2 of the measure that described multiband reader device sends first very low frequency F2 radio signal;
2. due to multiband integrated circuit card 1 power on after remove calibration marker, namely the magnetic field intensity threshold value M2gate allowing to swipe the card is not recorded, therefore multiband integrated circuit card first will judge whether its inside has recorded a magnetic field intensity threshold value M2gate allowing to swipe the card, if do not record the magnetic field intensity threshold value M2gate allowing to swipe the card, do not swipe the card;
If 3. multiband integrated circuit card inside does not record the magnetic field intensity threshold value M2gate allowing to swipe the card, then the magnetic field intensity M2 of the record described first very low frequency F2 radio signal is calibrated magnetic field intensity thresholding Tm2 compare with startup by described multiband integrated circuit card, if the magnetic field intensity M2 of the described first very low frequency F2 radio signal is greater than when starting calibration magnetic field intensity thresholding Tm2, then automatically start calibration flow process, namely the magnetic field intensity threshold value M2gate allowing to swipe the card is determined, comprise step
A. multiband integrated circuit card and multiband reader device carry out authentication;
B. multiband integrated circuit card measures the magnetic field intensity M3 of the extremely low frequency F3 radio signal that multiband reader device sends;
C. the magnetic field intensity threshold value M2gate allowing to swipe the card is calculated, the magnetic field intensity M3 that the average field strength value M3ave allowing the magnetic field intensity threshold value M2gate swiped the card to equal the extremely low frequency F3 radio signal in set distance of on average swiping the card that multiband reader device sends deducts the extremely low frequency F3 radio signal recorded adds the magnetic field intensity M2 sum of the first very low frequency F2 radio signal recorded, namely
The average field strength value M3ave of magnetic field intensity threshold value M2gate=extremely low frequency F3 radio signal
The magnetic field intensity M3 of-extremely low frequency (F3) radio signal
The magnetic field intensity M2 of the+the first very low frequency F2 radio signal;
4. multiband integrated circuit card judge measured by the magnetic field intensity M2 of the first very low frequency F2 radio signal whether be greater than the magnetic field intensity threshold value M2gate allowing to swipe the card;
If 5. the magnetic field intensity M2 of the measured first very low frequency F2 radio signal is greater than the magnetic field intensity threshold value M2gate allowing to swipe the card, then multiband integrated circuit card and multiband reader device carry out authentication;
6. authentication is passed through, and carries out mobile payment by higher frequency F1 radio signal;
Described higher frequency F1 is greater than 80MHz, and first very low frequency F2 is between 2KHz to 50KHz, and extremely low frequency F3 is between 2Hz to 2KHz.
Described multiband integrated circuit card and multiband reader device carry out authentication and comprise step:
A. multiband integrated circuit card receives the radio signal of the very low frequency F4 of second between 2KHz to 150KHz that multiband reader device sends, and this radio signal comprises multiband integrated circuit card and to communicate with multiband reader device the numerical value of the higher frequency F1 used and the identity information IDr of multiband reader device;
The numerical value of higher frequency F1 in the radio signal of b. the second very low frequency F4 described in multiband integrated circuit card demodulating and decoding and the identity information IDr of multiband reader device;
C. multiband integrated circuit card transmission frequency be the RI radio intelligence of higher frequency F1 to multiband reader device, request calibration flow process or mobile payment, the RI radio intelligence of this higher frequency F1 comprises the identity information IDr of multiband reader device; After multiband reader device receives the RI radio intelligence of this higher frequency F1 and checking identity information IDr is wherein correct, between multiband integrated circuit card and multiband reader device, carry out calibration flow process or mobile payment.
Swipe the card or mobile payment operating process as follows:
1, multiband integrated circuit card 1 receive frequency is the radio signal of the second very low frequency F4, this signal is sent by multiband reader device 2, wherein containing the information such as identity IDr of multiband reader device 2 for the higher frequency F1 numerical value that uses with multiband integrated circuit card 1 communication and multiband reader device 2;
2, multiband integrated circuit card 1 and multiband reader device 2 are enough near, its frequency received be the radio signal signal to noise ratio (S/N ratio) of the second very low frequency F4 enough large time, can the correct data message such as demodulating and decoding higher frequency F1 value wherein and IDr;
3, after multiband integrated circuit card 1 receives the data messages such as correct higher frequency F1 and IDr, use the radio of higher frequency F1 to send information to multiband reader device 2, ask to swipe the card flow process, containing information such as IDr in the information of transmission.
4, after multiband reader device 2 receives the solicited message of swiping the card of multiband integrated circuit card 1 from the radio of higher frequency F1, first more whether IDr is correct, if incorrect, then refuse execution to swipe the card flow process, carry out with this multiband reader device 2 process of swiping the card to avoid the multiband integrated circuit card 1 be positioned near other multiband reader devices;
5, multiband reader device 2 compare IDr correct after, multiband integrated circuit card 1 is coordinated to carry out follow-up flow process of swiping the card, in follow-up flow process, multiband reader device 2 coordinates multiband integrated circuit card 1 to use the radio frequency of higher frequency F1 to carry out both-way communication, jointly completes other operations of the process of swiping the card;
If multiband integrated circuit card 1 has acceleration analysis processing module, and this application security requirement of swiping the card is very high, need the confirmation of user 4, multiband integrated circuit card 1 calls the function of acceleration analysis processing module 14, etc. the specific confirmation action of user 4 to be identified, if do not recognize confirmation action in official hour, multiband integrated circuit card 1 abandons this operation of swiping the card.If acceleration analysis processing module 14 identifies the confirmation action of user 4 in official hour, multiband integrated circuit card 1 has just continued the subsequent operation of swiping the card.
Communication process of more than swiping the card not is the process of swiping the card of unique feasible, and the in fact feasible process of swiping the card can have unlimited multiple change.
Use the measuring technique of existing electronic signal, the measurement implementation method of the first very magnetic field intensity of low frequency F2 radio signal has a variety of, and here is some of them methods:
The measurement of the first very magnetic field intensity of low frequency F2 radio signal can be made up of two modules, sensor (or being called antenna) and electric signal size measurement module.The magnetic field intensity physical quantity of the first very low frequency F2 radio signal is transformed to electric signal (being voltage signal under normal circumstances) by sensor.Can use coil, mistor, magnetic sensitive transistor, magneto field effect tube, hall device that the magnetic field intensity signal of the first very low frequency F2 is transformed to electric signal in multiband integrated circuit card 1.Have a conversion coefficient between magnetic field intensity effective value and output electric signal effective value, the size of this coefficient is determined when sensor (or antenna) designs.Electric signal size measurement module can by amplifier, bandpass filter, peak detector, A/D converter, and measurement processing program forms.Measurement processing program according to parameters such as the conversion coefficient of sensor, the enlargement factors of amplifier, A/D is changed after numerical value be scaled the field strength value of the first very low frequency F2.Electric signal size measurement module also can be formed like this: amplifier, A/D converter, digital band-pass filter, digital peak wave detector, measurement processing program.Peak value to be scaled the field strength value of the first very low frequency F2 according to each parameter and conversion coefficient by measurement processing program.Using digital band-pass filter can realize the wave filter of high performance requirements easily, is reasonable scheme.In a word, the implementation of the prior art of electric signal size measurement module can have various method, repeats no more herein.
The measurement implementation method of the magnetic field intensity of extremely low frequency F3 is the same with the test of the first very low frequency F2 magnetic field intensity a variety of implementation.But no matter use which kind of mode, be still made up of sensor (antenna) and electric signal size measurement module.Frequency is the RI radio intelligence receiving handling method of the second very low frequency F4: centre frequency is the second radio that very low frequency F4 carries data message is also processed by sensor (antenna) and electronic signal processing module.Its sensor can be made up of coil, mistor, magnetic sensitive transistor, magneto field effect tube or hall device equally.The function of electronic signal processing module is amplified and the data message of demodulating and decoding second very in low frequency F4, and its method and technology has been mature technology.3 (first very low frequency F2, second be 2 when very low frequency F4 is identical) radio signals of first very low frequency F2, extremely low frequency F3, second very low frequency F4, its signal spectrum does not have overlap, therefore same antenna can be used to receive the radio signal of these frequencies simultaneously, and same amplifier can be used simultaneously to amplify these signals, after amplification, deliver to respective processing module respectively.Therefore, first very low frequency F2, extremely low frequency F3, second very the processing module common antenna of low frequency F4 radio signal and amplifier are feasible specific embodiments.The radio-frequency spectrum of the first very low frequency F2, extremely low frequency F3, second very low frequency F4 frequency that multiband reader device is launched is not overlapping, and same coil antenna can be used to launch these 3 (first very low frequency F2, second be 2 when very low frequency F4 is identical) radio signals.Deliver to an amplification driver after the radio signal linear superposition of the first very low frequency F2, extremely low frequency F3, second very low frequency F4 that multiband reader device produces, then drive a coil antenna RI radio intelligence of the first very low frequency F2, extremely low frequency F3, second very low frequency F4 frequency to be sent.Certainly from antenna transmission independently after these RI radio intelligence can use separate amplifiers to amplify respectively, but more complicated than the scheme of use amplifier and an antenna like this, and the utilization factor of power supply energy is lower.
The embodiment of market POS:
See Figure 13, the card reader 5 of market credit card is made up of card reader main circuit 6 and multiband reader device 2, has the software and hardware be connected with bank account management system in card reader 5.Mobile terminal 3 is the mobile phone of user.Multiband integrated circuit card 1 in user mobile phone is the multiband integrated circuit card 1 with SIM card function, and function of swiping card module in this multiband integrated circuit card 1 13 to be swiped the card software and credit identity authentication information containing credit card account.Security requirement due to credit card is high especially and rate request of swiping the card is not too high, so need the confirmation of holder to operate, needs acceleration analysis processing module 14 in the multiband integrated circuit card 1 of therefore the type application.
The structure of multiband integrated circuit card 1 is shown in Figure 16: multiband integrated circuit card 1 is made up of wireline interface 11, unlimited transmitting-receiving processing module 12, function of swiping card module 13, optional acceleration analysis processing module 14 and control module 15.Control module 15 is connected with wireline interface 11, wireless receiving and dispatching processing module 12, function of swiping card module 13 and acceleration analysis processing module 14 respectively.
Wireless receiving and dispatching processing module 12 is received and dispatched process submodule 121, low frequency frequency range process submodule 122 and extremely low frequency frequency range process submodule 123 by high-frequency band and is formed.High-frequency band transmitting-receiving process submodule 121 is received and dispatched treatment circuit 1211 by high frequency antenna 1212 and high frequency and is formed.Low frequency frequency range process submodule 122 and extremely low frequency frequency range process submodule 123 have common three parts used: low frequency and extremely-low frequency antenna 1234, low frequency and extremely low frequency amplifier 1233 and low frequency and extremely low frequency A/D converter 1232.The radio signal of following three frequencies in space, multiband integrated circuit card 1 place is transformed to voltage signal by low frequency and extremely-low frequency antenna 1234: first very low frequency F2 be that very low frequency F4 is the data receiver radio signal of 15KHz and extremely low frequency F3 is the magnetic field intensity signal of 80Hz for the magnetic field intensity signal, second of 9100Hz.Low frequency and extremely-low frequency antenna 1234 convert gained voltage signal and give low frequency and extremely low frequency amplifier 1233 amplifies, and are then transformed to digital voltage signal by low frequency and extremely low frequency A/D converter 1232.Low frequency frequency range process submodule is that first very the magnetic field intensity measurement module of low frequency F2 and centre frequency are that the radio data signal receiving processing module of the second very low frequency F4 forms by centre frequency.Wherein centre frequency be first very low frequency F2 magnetic field intensity measurement module by low frequency and extremely-low frequency antenna 1234, low frequency and extremely low frequency amplifier 1233 and low frequency and extremely low frequency A/D converter 1232 and centre frequency be first very the magnetic field intensity of low frequency F2 measure digital signal processing module 1221 and form.
Centre frequency be first very low frequency F2 magnetic field intensity measure digital signal processing module 1221 process the digital voltage signal brought from low frequency and extremely low frequency A/D converter 1232 in pure digi-tal territory.The centre frequency that magnetic field intensity measures digital signal filter in digital signal processing module 1221 is 9100Hz, bandwidth 100Hz..Centre frequency is that the wireless receiving digital signal processing module 1222 that the radio data signal receiving processing module of the second very low frequency F4 is the second very low frequency F4 by public low frequency and extremely-low frequency antenna 1234, low frequency and extremely low frequency amplifier 1233 and low frequency and extremely low frequency A/D converter 1232 and centre frequency forms.Centre frequency is that the wireless receiving digital signal processing module 1222 of the second very low frequency F4 processes the digital signal brought from low frequency and extremely low frequency A/D converter 1232 in pure digi-tal territory, centre frequency is that the radio signal of the second very low frequency F4 uses MSK modulation system, data transmission bauds is 2Kbps, wherein the centre frequency of digital signal filter is 15KHz, bandwidth 2KHz.The magnetic field intensity that extremely low frequency frequency range processing module 123 is extremely low frequency F3 by public low frequency and extremely-low frequency antenna 1234, low frequency and extremely low frequency amplifier 1233 and low frequency and extremely low frequency A/D converter 1232 and centre frequency is measured digital signal processing module 1231 and is formed.Centre frequency is the magnetic field intensity digital signal that the magnetic field intensity of extremely low frequency F3 measures that digital signal processing module 1231 processes the extremely low frequency F3 brought from low frequency and extremely low frequency A/D converter 1232 in pure digi-tal territory, wherein the centre frequency of digital signal filter is 80Hz, and bandwidth is 10Hz.
The structure of multiband reader device 2 is shown in Figure 17, and multiband reader device 2 is made up of reader device control module 21, wireless receiving and dispatching processing module 22, interface circuit 23.Reader device control module 21 is connected with transceiving processing module 22, interface circuit 23 respectively.Wireless receiving and dispatching processing module 22 is received and dispatched process submodule 221, low frequency frequency range process submodule 222 and extremely low frequency frequency range process submodule 223 by high-frequency band and is formed.High-frequency band transmitting-receiving process submodule 221 is received and dispatched treatment circuit 2211 by high frequency antenna 2212 and high frequency and is formed.Low frequency frequency range process submodule 222 and extremely low frequency frequency range process submodule 223 have common three parts used: low frequency and extremely-low frequency antenna 2234, low frequency and extremely low frequency driver 2233 and low frequency and extremely low frequency D/A converter 2232.The magnetic field intensity that low frequency frequency range process submodule 222 is the first very low frequency F2 by centre frequency generate transmitter module and centre frequency be second very the radio data signal of low frequency F4 generate transmitter module and form.Centre frequency be first very low frequency F2 magnetic field intensity generate transmitter module by public low frequency and extremely-low frequency antenna 2234, low frequency and extremely low frequency driver 2233 and low frequency and extremely low frequency D/A converter 2232 and centre frequency be first very the magnetic field intensity signal of low frequency F2 generate digital signal processing module 2221 and form, centre frequency be second very low frequency F4 radio data signal generate launch processing module by public low frequency and extremely-low frequency antenna 2234, low frequency and extremely low frequency driver 2233 and low frequency and extremely low frequency D/A converter 2232 and centre frequency be second very the radio coding modulation of low frequency F4 generate digital signal processing module 2222 and form.The magnetic field intensity signal that extremely low frequency frequency range process submodule 223 is extremely low frequency F3 by public low frequency and extremely-low frequency antenna 2234, low frequency and extremely low frequency driver 2233 and low frequency and extremely low frequency D/A converter 2232 and centre frequency generates digital signal processing module 2231 and forms.Centre frequency be first very low frequency F2 magnetic field intensity signal generate digital signal processing module 2221 generate first very low frequency F2 be the magnetic field intensity digital signal of 9100Hz, centre frequency be the radio coding modulation of the second very low frequency F4 generate digital signal processing module 2222 generate second very low frequency F4 be the radio digital signal of 15KHz, the magnetic field intensity signal of extremely low frequency F3 generates digital signal processing module 2231 and generates the magnetic field intensity digital signal that extremely low frequency F3 is 80Hz.Low frequency and extremely low frequency D/A converter 2232 by first very the magnetic field intensity digital signal of low frequency F2, centre frequency be second very the radio digital signal of low frequency F4 and centre frequency be converted to simulating signal after the magnetic field intensity digital signal of extremely low frequency F3 carries out linear superposition, simulating signal is given low frequency and extremely low frequency driver 2233 amplifies rear drive low frequency and extremely-low frequency antenna 2234 is launched.Low frequency and extremely-low frequency antenna 2234 are made up of the enamel wire coil of multiturn.Centre frequency is that the radio signal of the second very low frequency F4 uses MSK modulation system, and data transmission bauds is 2Kbps.
Calibration and the operating process of swiping the card of multiband integrated circuit card are:
A, cashier operate card reader 5, and start credit card operation, by the interface circuit 23 of multiband reader device 2, card reader 5 notifies that multiband reader device 2 starts card seeking.Centre frequency in low frequency frequency range process submodule 222 in the wireless receiving and dispatching processing module 22 of multiband reader device 2 be the magnetic field intensity signal of the first very low frequency F2 generate digital signal processing module 2221 generate first very low frequency F2 be the digital magnetic field intensity signal of 9100Hz, the centre frequency in the low frequency frequency range process submodule 222 in the wireless receiving and dispatching processing module 22 of simultaneously multiband reader device 2 be the radio coding modulation of the second very low frequency F4 generate digital signal processing module 2222 generate second very low frequency F4 be the radio digital signal of 15KHz.Second very low frequency F4 be that in the radio digital signal of 15KHz, modulating-coding has following information: the numerical value of frequency of operation higher frequency F1 of the identity information IDr of multiband reader device 2 and high-frequency band transmitting-receiving process submodule 221.Frequency is the radio of the second very low frequency F4 MSK modulation system that uses baud rate to be 2Kbps.First very low frequency F2 be 9100Hz digital magnetic field intensity signal and second very low frequency F4 be converted to simulating signal through low frequency and extremely low frequency D/A converter 2232 after the radio digital signal linear superposition of 15KHz, then amplify rear drive low frequency and extremely-low frequency antenna 2234 is launched through low frequency and extremely low frequency driver 2233.The high-frequency band transmitting-receiving process submodule 221 of the wireless receiving and dispatching processing module 22 of multiband reader device 2 works in the accepting state that centre frequency is higher frequency F1, and the centre frequency that wait multiband integrated circuit card 1 sends is the radio signal of higher frequency F1.
B, when user's handheld mobile phone is near multiband reader device 2, low frequency frequency range process submodule 122 test constantly first of multiband integrated circuit card 1 very low frequency F2 is the magnetic field intensity of 9100Hz.
The magnetic field intensity signal of first of space, multiband integrated circuit card 1 place the very low frequency F2 is transformed to voltage signal and gives low frequency and extremely low frequency amplifier 1233 amplifies by b1, low frequency and extremely-low frequency antenna 1234.
Voltage signal after b2, low frequency and extremely low frequency amplifier 1233 amplify gives low frequency and extremely low frequency A/D converter 1232 carries out analog to digital conversion, give after analog voltage signal being converted to digital voltage signal centre frequency be first very the magnetic field intensity of low frequency F2 measure digital processing circuit 1221 and process.
B3, centre frequency are that the magnetic field intensity of the first very low frequency F2 measures the digital voltage signal low frequency and extremely low frequency A/D converter 1232 brought of digital processing circuit 1221, first carry out the process of the digital band-pass filter of centre frequency 9100Hz bandwidth 100Hz, filter out-band external noise.Then measure the amplitude of this voltage signal, then voltage amplitude is transformed to correct field strength values M2.
If do not calibrated after c multiband integrated circuit card 1 electrification reset, the field strength values M2 recorded calibrate magnetic field intensity thresholding Tm2 compare with startup by multiband integrated circuit card 1, if M2 is greater than to start calibrate magnetic field intensity thresholding Tm2, starts calibration flow process below as steps d.Multiband integrated circuit card 1 in mobile phone performs step f.
D, multiband integrated circuit card 1 are that the radio of the second very low frequency F4, demodulating and decoding goes out data message wherein by low frequency frequency range process submodule 122 from centre frequency.If signal to noise ratio (S/N ratio) is lower, the data message check errors solved, gets back to step b, continues to detect field strength values M2.Centre frequency be second very the reception of the RI radio intelligence of low frequency F4 and demodulating and decoding process as follows:
The radio signal of second of space, multiband integrated circuit card 1 place the very low frequency F4 is transformed to voltage signal and gives low frequency and extremely low frequency amplifier 1233 amplifies by d1, low frequency and extremely-low frequency antenna 1234.
Voltage signal after d2, low frequency and extremely low frequency amplifier 1233 amplify gives low frequency and extremely low frequency A/D converter 1232 carries out analog to digital conversion, and giving centre frequency after analog voltage signal being converted to digital voltage signal is that the wireless receiving digital processing circuit 1222 of the second very low frequency F4 processes.
D3, centre frequency are that the wireless receiving digital processing circuit 1222 of the second very low frequency F4 is to the digital signal brought from low frequency and extremely low frequency A/D converter 1232 advanced line number word bandpass filtering, the centre frequency of digital band-pass filter is 15KHz, and bandwidth is 2KHz (half of data baud rate 2Kbps).Signal after filter out-band external noise carries out the demodulating and decoding operation of digital radio again, solves the identity information IDr value of higher frequency F1 value in radio and multiband reader device.
D4, multiband integrated circuit card 1 receive correct multiband reader device 2 high-frequency band transmitting-receiving process submodule 221 work higher frequency F1 and identity information IDr value after, making the high-frequency band of multiband integrated circuit card 1 receive and dispatch process submodule 121 works on higher frequency F1, and use the channel of higher frequency F1 to send calibration request information, comprise the IDr value received in information.
D5, follow-up calibration and swipe the card in process, multiband integrated circuit card 1 is similar to aforementioned with the details of operation of each digital signal processing module in the wireless process interface 12,22 in multiband reader device 2 and public module, no longer carefully states.
E if the multiband integrated circuit card 1 do not calibrated gets back to step b, otherwise arrives step f.
F, when the magnetic field intensity M2 of the first very low frequency F2 be greater than magnetic field intensity swipe the card thresholding M2gate time start payment and to swipe the card operating process.Otherwise get back to step b.
G, multiband integrated circuit card 1 receive frequency are the radio signal of the second very low frequency F4, this signal is sent by multiband reader device 2, wherein containing the information such as identity information IDr of multiband reader device 2 for the higher frequency F1 numerical value that uses with multiband integrated circuit card 1 communication and multiband reader device.
H, multiband integrated circuit card 1 and multiband reader device 2 are enough near, when the signal to noise ratio (S/N ratio) of its second very radio signal of low frequency F4 received is enough large, and can the correct data message such as demodulating and decoding higher frequency F1 value wherein and IDr.
After i, multiband integrated circuit card 1 receive the data messages such as correct higher frequency F1 and IDr, frequency of utilization is that the radio of higher frequency F1 sends information to multiband reader device 2, asks to swipe the card flow process, containing information such as IDr in the information of transmission.
J, multiband reader device 2 from frequency be receive the radio of higher frequency F1 multiband integrated circuit card 1 swipe the card request after, first more whether IDr is correct, if incorrect, get back to step b, refusal execution is swiped the card flow process, carries out process of swiping the card to avoid the multiband integrated circuit card 1 be positioned near other multiband reader devices with this multiband reader device 2.
K, multiband reader device 2 compare IDr correct after, multiband integrated circuit card 1 is coordinated to carry out follow-up flow process of swiping the card, in follow-up flow process, multiband reader device 2 coordinates multiband integrated circuit card 1 frequency of utilization to be that the radio frequency of higher frequency F1 carries out both-way communication, carry out other operations of authentication further, in authentication, card reader is connected with bank account management system, is confirmed the legitimacy of card identity by bank account management system further.There are encryption and decryption security algorithm and the agreements such as the mature authentication of a lot of industry, repeated no more here.
L, after the validation of information such as identity, enter flow process of deducting fees, deducting fees in flow process, the work of multiband integrated circuit card 1 starting loop measurement process module 14, wait for the specific confirmation action of user.
M, acceleration analysis processing module 14 continue complete whole flow process of deducting fees, otherwise refusal are deducted fees, and terminates whole operation of swiping the card receive user 4 effective confirmation action in official hour after.

Claims (8)

1. apart from a controlled method of mobile payment, it is characterized in that: comprise the following steps,
1. the multiband integrated circuit card in mobile terminal near multiband reader device, the magnetic field intensity (M2) of the measure that described multiband reader device sends first very low frequency (F2) radio signal;
2. multiband integrated circuit card judges whether its inside has recorded a magnetic field intensity threshold value (M2gate) allowing to swipe the card;
If 3. multiband integrated circuit card inside does not record the magnetic field intensity threshold value (M2gate) allowing to swipe the card, then the magnetic field intensity (M2) of the record described first very low frequency (F2) radio signal is calibrated magnetic field intensity thresholding (Tm2) compare with startup by described multiband integrated circuit card, if the magnetic field intensity (M2) of the described first very low frequency (F2) radio signal is greater than when starting calibration magnetic field intensity thresholding (Tm2), then automatically start calibration flow process, namely the magnetic field intensity threshold value (M2gate) allowing to swipe the card is determined, comprise step,
A. multiband integrated circuit card and multiband reader device carry out authentication;
B. multiband integrated circuit card measures the magnetic field intensity (M3) of extremely low frequency (F3) radio signal that multiband reader device sends;
C. the magnetic field intensity threshold value (M2gate) allowing to swipe the card is calculated, the magnetic field intensity (M3) that the average field strength value (M3ave) allowing the magnetic field intensity threshold value (M2gate) of swiping the card to equal extremely low frequency (F3) radio signal in set distance of on average swiping the card that multiband reader device sends deducts extremely low frequency (F3) radio signal adds magnetic field intensity (M2) sum of the first very low frequency (F2) radio signal recorded, namely
The average field strength value (M3ave) of magnetic field intensity threshold value (M2gate)=extremely low frequency (F3) radio signal
The magnetic field intensity (M3) of-extremely low frequency (F3) radio signal
The magnetic field intensity (M2) of the+the first very low frequency (F2) radio signal;
4. multiband integrated circuit card judge measured by the magnetic field intensity (M2) of the first very low frequency (F2) radio signal whether be greater than the magnetic field intensity threshold value (M2gate) allowing to swipe the card;
If 5. the magnetic field intensity (M2) of the measured first very low frequency (F2) radio signal is greater than the magnetic field intensity threshold value (M2gate) allowing to swipe the card, then multiband integrated circuit card and multiband reader device carry out authentication;
6. authentication is passed through, and carries out mobile payment swipe the card by higher frequency (F1) radio signal;
Described higher frequency (F1) is greater than 80MHz, and first very low frequency (F2) is between 2KHz to 50KHz, and extremely low frequency (F3) is between 2Hz to 2KHz.
2. as claimed in claim 1 apart from controlled method of mobile payment, it is characterized in that: in step authentication 6. by carrying out before mobile payment swipes the card afterwards, the acceleration analysis processing module of multiband integrated circuit card measures the acceleration of multiband integrated circuit card, identifies the confirmation action of swiping the card of holder.
3. as claimed in claim 1 apart from controlled method of mobile payment, it is characterized in that: described multiband integrated circuit card and multiband reader device carry out authentication and comprise step:
A. the radio signal of multiband integrated circuit card the second very low frequency (F4) of receiving that multiband reader device sends, this radio signal comprises multiband integrated circuit card and to communicate with multiband reader device the numerical value of the higher frequency (F1) used and the identity information (IDr) of multiband reader device;
The numerical value of higher frequency (F1) in the radio signal of b. the second very low frequency (F4) described in multiband integrated circuit card demodulating and decoding and the identity information (IDr) of multiband reader device;
C. multiband integrated circuit card transmission frequency is that the RI radio intelligence of higher frequency (F1) is to multiband reader device, request calibration flow process or mobile payment, the RI radio intelligence of this higher frequency (F1) comprises the identity information (IDr) of multiband reader device;
D., after multiband reader device receives the RI radio intelligence of this higher frequency (F1) and checking identity information (IDr) is wherein correct, between multiband integrated circuit card and multiband reader device, calibration flow process or mobile payment is carried out.
4. as claimed in claim 3 apart from controlled method of mobile payment, it is characterized in that: for measure the radio signal of magnetic field intensity first very low frequency (F2) and the radio signal for communicating second very low frequency (F4) is identical.
5. as claimed in claim 3 apart from controlled method of mobile payment, it is characterized in that: for measure the radio signal of magnetic field intensity first very low frequency (F2) and the radio signal for communicating second very low frequency (F4) is different, described second very low frequency (F4) be greater than the first very low frequency (F2).
6. as claimed in claim 1 apart from controlled method of mobile payment, it is characterized in that: the constant amplitude of the first very magnetic field intensity (M2) of low frequency (F2) radio signal and magnetic field intensity (M3) of extremely low frequency (F3) radio signal that described multiband reader device is launched, amplitude does not change in time.
7. a multiband reader device, comprise reader device control module (21), wireless receiving and dispatching processing module (22) and interface circuit (23), described reader device control module (21) is electrically connected with wireless receiving and dispatching processing module (22) and interface circuit (23) respectively; It is characterized in that: described wireless receiving and dispatching processing module comprises
High-frequency band transmitting-receiving process submodule (221), is greater than the radiofrequency signal of 80MHz for transmitting and receiving frequency;
Low frequency frequency range process submodule (222), for launching very low-frequency radio signal of 2KHz to 50KHz, and launches very low-frequency radio signal of carrying data message of 2KHz to 150KHz; And
Extremely low frequency frequency range process submodule (223), for launching the radio signal of the extremely low frequency of 2Hz to 2KHz;
Described high-frequency band transmitting-receiving process submodule (221) comprises again high frequency transmitting-receiving treatment circuit (2211) and high frequency antenna (2212), described low frequency frequency range process submodule (222) and extremely low frequency frequency range process submodule (223) comprise again first very low frequency (F2) magnetic field intensity signal generate digital signal processing module (2221), second very low frequency (F4) radio coding modulation generate digital signal processing module (2222), the magnetic field intensity signal of extremely low frequency (F3) generates digital signal processing module (2231), low frequency and extremely low frequency D/A converter (2232), low frequency and extremely low frequency driver (2233) and low frequency and extremely-low frequency antenna (2234), described low frequency and extremely low frequency driver (2233) are electrically connected with low frequency and extremely low frequency D/A converter (2232) and low frequency and extremely-low frequency antenna (2234) respectively, described first very low frequency (F2) magnetic field intensity signal generate digital signal processing module (2221), second very low frequency (F4) radio coding modulation generate digital signal processing module (2222), the magnetic field intensity signal of extremely low frequency (F3) generates digital signal processing module (2231) and is electrically connected with low frequency and extremely low frequency D/A converter (2232) respectively.
8. a multiband integrated circuit card, the process carrying out radio signal is coordinated with multiband reader device, comprise control module (15), wireless receiving and dispatching processing module (12), function of swiping card module (13) and wireline interface (11), described control module (15) is electrically connected with wireless receiving and dispatching processing module (12), function of swiping card module (13) and wireline interface (11) respectively, it is characterized in that:
Described wireless receiving and dispatching processing module (12) comprises
High-frequency band transmitting-receiving process submodule (121), transmitting-receiving frequency is greater than the radiofrequency signal of 80MHz, uses the radio of higher frequency (F1) to carry out the exchange of two-way data message with multiband reader device;
Low frequency frequency range process submodule (122), receive the magnetic field intensity information of very low-frequency radio signal of the 2KHz to 50KHz that multiband reader device is launched, and receive the radio signal of the 2KHz to 150KHz that multiband reader device is launched and demodulating and decoding data message wherein; And
Extremely low frequency frequency range process submodule (123), receives the wireless magnetic field intensity information that multiband reader device launches the extremely low frequency of 2Hz to 2KHz;
Described high-frequency band transmitting-receiving process submodule (121) comprises again high frequency transmitting-receiving treatment circuit (1211) and high frequency antenna (1212), described low frequency frequency range process submodule (122) and extremely low frequency frequency range process submodule (123) comprise again first very low frequency (F2) magnetic field intensity measure digital processing circuit (1221), the wireless receiving digital processing circuit (1222) of the second very low frequency (F4), the magnetic field intensity of extremely low frequency (F3) measures digital processing circuit (1231), low frequency and extremely low frequency A/D converter (1232), low frequency and extremely low frequency amplifier (1233) and low frequency and extremely-low frequency antenna (1234), described low frequency and extremely low frequency amplifier (1233) are electrically connected with low frequency and extremely low frequency A/D converter (1232) and low frequency and extremely-low frequency antenna (1234) respectively, described first very low frequency (F2) magnetic field intensity measure digital processing circuit (1221), the wireless receiving digital processing circuit (1222) of the second very low frequency (F4), the magnetic field intensity of extremely low frequency (F3) is measured digital processing circuit (1231) and is electrically connected with low frequency and extremely low frequency A/D converter (1232) respectively.
CN201110143638.7A 2011-05-30 2011-05-30 Method and device for distance-controllable mobile payment Expired - Fee Related CN102810144B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110143638.7A CN102810144B (en) 2011-05-30 2011-05-30 Method and device for distance-controllable mobile payment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110143638.7A CN102810144B (en) 2011-05-30 2011-05-30 Method and device for distance-controllable mobile payment
PCT/CN2012/071707 WO2012163118A1 (en) 2011-05-30 2012-02-28 Method and device for mobile payment at distance controllable

Publications (2)

Publication Number Publication Date
CN102810144A CN102810144A (en) 2012-12-05
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