CN109918955A - One kind guidance field of swiping the card determines method, apparatus and card reader - Google Patents
One kind guidance field of swiping the card determines method, apparatus and card reader Download PDFInfo
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
-
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Abstract
The embodiment of the present invention provides one kind guidance field of swiping the card and determines method, apparatus and card reader, at least two inductors by the way that different zones in the coverage area of card reader near-field communication aerial magnetic field are arranged in detect the parameter that can characterize regional magnetic field intensity locating for each inductor, then determine guidance field of swiping the card according to the parameter that each inductor detects.By the mark on specification, temporary protective film can only swipe the card the way of instruction in compared to the prior art; the present embodiment can be based on Faraday's electromagnetic induction law; the size of regional magnetic field intensity locating for each inductor of card reader is detected using the inductor being arranged in the coverage area of card reader near-field communication aerial magnetic field; and guidance field of swiping the card is determined according to each regional magnetic field intensity; guarantee that user can quickly and accurately find region of swiping the card under the auxiliary of the guidance field of swiping the card; it successfully completes and swipes the card, promote the experience of swiping the card of user.
Description
Technical field
The present invention relates to the communications field more particularly to one kind guidance fields of swiping the card to determine method, apparatus and card reader.
Background technique
NFC (Near Field Communication, near-field communication) is a kind of measured short-distance wireless connection skill
Art, the i.e. fusion of non contact angle measurement technology and interconnection technique can be realized simple and safety between multiple electronic equipments
Two-way interactive.Currently, the technology is commonly utilized in financial services industry.Wherein, mobile phone terminal payment is carried out to adopt
With a kind of applied business of NFC technique, it is carrier by mobile phone, non-contact IC card application is incorporated into mobile phone, with card mold
Quasi-, card reader and point-to-point three kinds of application models realize that mobile-phone payment, industrial application, accumulated point exchanging, electronic bill, identity are known
Not, the service product of a variety of applications such as anti-fake, advertisement.Under card mold simulation models, mobile phone can be used as card to be brushed and use, such as
Mobile phone is realized as bus card and rides, is current etc. as admission ticket realization.In addition, mobile phone is used as reading to mobile phone in card reader mode
Card device, internal NFC antenna generates magnetic field and extraneous card to be brushed carries out information exchange.So in mobile phone as card reading
When device, it should guarantee that card to be brushed is in the mobile phone NFC antenna stronger region in magnetic field nearby as far as possible, just can guarantee that mobile phone is known in this way
It is clipped to card to be brushed.User so how is allowed quickly and accurately to find the position of swiping the card on mobile phone, to promote efficiency of swiping the card
?
Currently, NFC antenna is placed in rear shell camera shooting head region substantially on the market with the mobile phone of NFC function.Some cell phone manufacturers
NFC can be briefly described to user in operation instructions to swipe the card region, there are also some cell phone manufacturers can be in the interim of protection mobile phone
Position of swiping the card substantially is indicated using simple graticule on protective film.But there are larger drawbacks for this position indicating mode of swiping the card: using
Family can't carry specification at any time and consult position of swiping the card during routine use mobile phone；For the station location marker that will swipe the card
It is even more so for the scheme of temporary protective film, because user, which begins to use, will tear temporary protective film when mobile phone.
So that user oneself can only grope during swiping the card, this, which may cause user, occurs repeatedly brushing during first use
Block unsuccessful situation to occur.This not only lowers efficiency of swiping the card, and also reduce success rate of swiping the card, and cause user experience bad.
Summary of the invention
One kind provided in an embodiment of the present invention guidance field of swiping the card determines method, apparatus and card reader, the skill mainly solved
Art problem is: solving existing NFC prompting mode in prompt scheme of swiping the card and ossifys, is not applicable, bad the influences user of suggesting effect brushes
The problem of card body is tested.
In order to solve the above technical problems, the embodiment of the present invention, which provides one kind guidance field of swiping the card, determines method, it is applied to read
Card device, this method comprises:
It is external behind generated magnetic field of swiping the card sensing, each sense can be characterized by the detection of at least two inductors
The parameter of regional magnetic field intensity locating for device is answered, at least two inductor is separately positioned on card reader near-field communication aerial magnetic field
Different zones in coverage area；
The guidance field of swiping the card to be swiped the card is determined according to the parameter detected.
The embodiment of the present invention also provides one kind and swipes the card guidance field determining device, comprising:
Detection unit, for passing through at least two inductors and detecting after sensing the external magnetic field caused by swipe the card
The parameter of regional magnetic field intensity locating for each inductor can be characterized, it is close that at least two inductor is separately positioned on card reader
Different zones in the coverage area of field communication antenna magnetic field；
Processing unit, for determining the guidance field of swiping the card to be swiped the card according to the parameter detected.
The embodiment of the present invention also provides a kind of card reader, and the card reader includes near-field communication aerial, setting described close
At least two inductors, detection unit, the processing unit of different zones in the coverage area of field communication antenna magnetic field；The processing is single
Member is communicated to connect with the near-field communication aerial, detection unit respectively；The detection unit is connect with each inductor respectively；
The near-field communication aerial is used to generate magnetic field under the control of the processing unit and external card to be brushed carries out letter
Breath interaction；The detection unit is sensing external each sense by being attached thereto respectively behind generated magnetic field of swiping the card
Answer device detection that can characterize the parameter of regional magnetic field intensity locating for each inductor, and the parameter that will test is input to institute
It states in processing unit；The processing unit determines that be swiped the card the swiping the card is drawn according to the parameter that the detection unit detects
Lead region.
The embodiment of the present invention also provides a kind of computer storage medium, and the computer-readable recording medium storage has one
Or multiple programs, one or more of programs can be executed by one or more processor, it is as described above to realize
It swipes the card guidance field the step of determining method.
The beneficial effects of the present invention are:
The embodiment of the present invention provides one kind guidance field of swiping the card and determines method, apparatus and card reader, is being read by setting
At least two inductors detection of different zones can characterize locating for each inductor in the coverage area of card device near-field communication aerial magnetic field
Then the parameter of regional magnetic field intensity is determined according to the parameter detected for guidance field of swiping the card to be swiped the card.Compared to
The way that by the mark on specification, temporary protective film can only swipe the card instruction in the prior art, the present embodiment provides
Guidance field of swiping the card determine that method can be based on Faraday's electromagnetic induction law, using being arranged in card reader near-field communication aerial
At least two inductors in the coverage area of magnetic field, detection can characterize regional magnetic field intensity size locating for each inductor of card reader
Parameter, and guidance field of swiping the card is determined according to testing result, guarantee that user can be quasi- under the auxiliary of the guidance field of swiping the card
It is really quickly found magnetic field strength and meets the region of swiping the card that identification of swiping the card requires, successfully complete and swipe the card, promote the body of swiping the card of user
It tests.
Other features of the invention and corresponding beneficial effect are described in the aft section of specification, and should be managed
Solution, at least partly beneficial effect is apparent from from the record in description of the invention.
Detailed description of the invention
Fig. 1 is a kind of hardware structural diagram for the card reader that the embodiment of the present invention one provides；
Fig. 2 is a kind of flow chart that the guidance field of swiping the card that the embodiment of the present invention one provides determines method；
Fig. 3 is the inductor that the embodiment of the present invention one provides and corresponding guidance field schematic diagram of swiping the card；
Fig. 4 is another hardware structural diagram for the card reader that the embodiment of the present invention one provides；
Fig. 5 is a kind of display interface schematic diagram for the card reader that the embodiment of the present invention one provides；
Fig. 6 is a kind of display interface signal that can be used as the smart phone that card reader uses that the embodiment of the present invention one provides
Figure；
Fig. 7 is a kind of hardware structural diagram of card reader provided by Embodiment 2 of the present invention；
Distribution of Magnetic Field schematic diagram when Fig. 8 is the Antenna Operation radiation shown in the embodiment of the present invention two
Fig. 9 for the individual pen squaerial institute radiation field shown in the embodiment of the present invention two field strength distribution schematic diagram；
Figure 10 is a kind of distribution schematic diagram of induction coil provided by Embodiment 2 of the present invention；
Figure 11 is a kind of structural schematic diagram for the guidance field determining device of swiping the card that the embodiment of the present invention three provides；
Figure 12 is another structural schematic diagram for the guidance field determining device of swiping the card that the embodiment of the present invention three provides.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below by specific embodiment knot
Attached drawing is closed to be described in further detail the embodiment of the present invention.It should be appreciated that specific embodiment described herein is only used to
It explains the present invention, is not intended to limit the present invention.
Embodiment one:
It is not high in order to solve, Guiding Significance coarse to the prompting mode in region of swiping the card in the prior art, cause user card punching
Difficulty, low success rate of problem of swiping the card are swiped the card prompt scheme the present embodiment provides one kind.The prompt scheme of swiping the card is mainly used in
It is provided with the card reader of at least two inductors in the coverage area of near-field communication aerial magnetic field, shows referring to Figure 1 below
The structural schematic diagram of card reader:
Card reader 10 includes processing unit 11, detection unit 12, near-field communication aerial 13 and is arranged in near-field communication day
At least two inductors 14 in the magnetic field coverage area of line, and different regions is arranged in different inductors 14.Wherein, it detects
Unit 12 and near-field communication aerial 13 are connected with processing unit 11, receive the control of processing unit 11.Near-field communication aerial
13 generate magnetic field under the control of processing unit 11 interacts with the external row information to be brushed that sticks into.Detection unit 12 is respectively the same as each induction
Device 14 connects, and the parameter that can characterize regional magnetic field intensity size locating for the inductor is detected using inductor 14.Detection unit
After 12 detect parameter by each inductor 14, parameter can be inputed to processing unit 11, so that 11 basis of processing unit
The parameter detected determines guidance field of swiping the card.
In a kind of example of the present embodiment, processing unit 11 comments the magnetic field strength in each region of card reader 10
Sentence, and then select at least one from each inductor 14, and inquires and select from pre-stored area maps table
The corresponding guidance field of swiping the card of the inductor 14.In one kind of the present embodiment, area maps table be can store in card reader
It include the corresponding relationship in each inductor 14 and its locating region in area maps table in memory.
The guidance field of swiping the card gone out as shown in connection with fig. 2 further below determines the flow chart of method to provided in this embodiment
Guidance field of swiping the card determines that method is introduced:
S202, outside is being sensed behind generated magnetic field of swiping the card, detecting by least two inductors can characterize respectively
The parameter of regional magnetic field intensity locating for inductor.
It swipes the card the prompt scheme of swiping the card in region compared to the existing signal on specification or mobile phone temporary protective film, this implementation
The guidance field of swiping the card that example provides determines that method can be based on different zones in 13 magnetic field coverage area of card reader near-field communication aerial
Magnetic field strength swipe the card the prompt in region to user, guaranteeing that user can be selected based on magnetic field strength is suitable for the area to swipe the card
Domain is placed wait swipe the card, and realization is swiped the card.This prompting mode is more flexible, can be according to the actual magnetic field in region each in card reader 10
Intensity makes prompt, more tallies with the actual situation.In order to determine the magnetic field strength in each region in card reader 10, the present embodiment will be adopted
The parameter of magnitude of field intensity can be characterized using law of electromagnetic induction detection at least two inductors 14.
The law of electromagnetic induction is also Faraday's electromagnetic induction law, and electromagnetic induction phenomenon refers to because magnetic flux change generates sense
The phenomenon that answering electromotive force.For example, when a part of conductor of closed circuit does the movement of cutting magnetic induction line in magnetic field, in conductor just
Electric current can be generated, the electric current of generation is known as induced current, and the electromotive force of generation is known as induced electromotive force.In the present embodiment, respectively
Position of the inductor 14 in card reader 10 is that fixed namely each inductor 14 is relative to the position of near-field communication aerial 13
Fixed, the movement of cutting magnetic induction line can't be done.But the near-field communication aerial 13 of card reader 10 is sensing that outside is to be brushed
After blocking the magnetic field generated, the magnetic field generated can change, and this changes of magnetic field can make the magnetic across inductor 14
Flux changes, so that inductor 14 generates induced current.
Since the induced current that each inductor 14 generates is directly proportional with magnetic field strength, detection unit in the present embodiment
12 can detecte the induced current of the generation of inductor 14 to characterize the magnetic field strength in region locating for inductor 14 itself.So
In a kind of example of the present embodiment, detection unit 12 is current detecting unit, can detecte the sense that each inductor 14 generates
Answer the size of electric current.It is directly proportional to the voltage swing at resistance both ends by the electric current of resistance due in the timing of resistance one, because
This, in a kind of example of the present embodiment, the electricity for the resistance that detection unit 12 can also be connect by detection with inductor 14
Pressure is to characterize magnetic field strength.In this case, detection unit 12 is voltage detection unit.Voltage detection unit includes detector
Part and the substitutional resistance connected respectively with each inductor.If being provided with 5 inductors in near-field communication aerial in a certain example
Near 13, then 5 equal-sized resistance of resistance value, abbreviation substitutional resistance will be had in voltage detection unit.This 5 substitutional resistances
It connects respectively with 5 inductors 14, the detection device in voltage detection unit can detect 5 respective ends of substitutional resistance respectively
Voltage.
It should be understood that if detection is the resistance connecting with inductor 14 for characterizing the parameter of magnitude of field intensity
End voltage, then need to guarantee that each resistance is substitutional resistance in voltage detection unit.If but by induced current as ginseng
It counts to characterize the magnetic field strength of each 14 position of inductor, is then not required for and the concatenated resistance phase of each inductor 14
Deng because measure each resistance end voltage and then combine each resistance size can calculate with resistance value size without
The induced current size of pass.
S204, guidance field of swiping the card to be swiped the card is determined according to the parameter detected.
After detection unit 12 detects the parameter that can characterize corresponding region magnetic field strength by each inductor 14, it can will examine
The parameter measured is input in processing unit 11.The parameter that processing unit 11 can be detected based on each inductor 14 is determined
It swipes the card guidance field.In a kind of example of the present embodiment, processing unit 11 can select parameter from each inductor 14
It is smaller to characterize magnetic field strength, i.e. the poor inductor 14 of at least one of parameter, and area maps table according to the pre-stored data is looked into
Ask out the corresponding guidance field of swiping the card of inductor 14.
In a kind of example of the present embodiment, before 11 query region mapping table of processing unit, processing unit 11 is answered
Each inductor 14 is established in the ban with the mapping relations between guidance field of swiping the card.So processing unit 11 should first determine each sense
The corresponding guidance field of swiping the card of device 14 is answered, in a kind of example of the present embodiment, processing unit 11 is based on each inductor 14
Geometric center determines guidance field of swiping the card.As shown in figure 3, determining the geometric center 30 of inductor 14a, then guidance field of swiping the card
To be the center of circle with geometric center 30, radius is the border circular areas 31 of 3cm.It should be understood that in some other of the present embodiment
In example, guidance field of swiping the card is also possible to other shapes, for example, centered on the geometric center of inductor, side length n
Square.It, should be same by inductor 14 after processing unit 11 determines the corresponding guidance field of swiping the card of each inductor
Mapping relations between corresponding guidance field of swiping the card are stored into area maps table, so as to subsequent corresponding based on the determination of inductor 14
It swipes the card guidance field.
It should be understood that processing unit 11 can be felt when guidance field is swiped the card in determination only in accordance with one selected
The device 14 is answered to determine, inductor 14 that can also be even more according to two determines.Such as work as in a kind of example of the present embodiment
In, processing unit 11 selects four optimal inductors 14 of parameter detected, and will be in the geometry of this four inductors 14
The region that the line of the heart is enclosed is as guidance field of swiping the card.
In another example of the present embodiment, processing unit 11 determines the corresponding guidance of swiping the card of selected inductor 14
Behind region, prompt can be also issued the user with, so, as shown in figure 4, card reader 10 further includes prompt unit.Prompt unit 15 is used
In determining to swipe the card behind guidance field corresponding at least one inductor 14 chosen in processing unit 11, is swiped the card and drawn based on this
It leads region and guidance of swiping the card is carried out to user.For example, processing unit 11 selects ginseng from each parameter that detection unit 12 detects
At least one worst is counted, determines that corresponding the swiping the card in area maps table of the corresponding inductor 14 of these parameters of selection is drawn
Region is led, prompt unit 15 is then controlled and is prompted, it is poor convenient for which regional magnetic field intensity in user's understanding card reader 10,
Be not suitable for swiping the card, so that user be helped to exclude to swipe the card ineffective region, allow user from the stronger region of remnant field intensity
Middle selection one is swiped the card.This prompting mode of swiping the card belongs to reverse side prompting mode.
Certainly, processing unit 11 can also select parameter preferably at least from each parameter that detection unit 12 detects
One, guidance field of being swiped the card according to corresponding to the optimal inductor 14 of the determining parameter selected of area maps table, and carry out
Prompt, so that user recognizes the stronger one or several regions of magnetic field strength according to prompt information of swiping the card.This prompt of swiping the card
Mode belongs to front prompting mode, and what is given the user in prompt information of swiping the card is in contrast to compare the region for being suitble to swipe the card.
It should be understood that guidance field of swiping the card is the credit card area for being suitble to user card punching in the prompting mode of front
Domain, but in reverse side prompt scheme, guidance field of swiping the card but is not suitable for swiping the card.For example, a kind of example in the present embodiment is worked as
In, processing unit 11 can choose the smallest inductor of locating regional magnetic field intensity according to the parameter that each inductor 14 detects, so
Guidance field of swiping the card corresponding to the inductor 14 is prompted to user afterwards.After user, which recognizes, swipes the card prompt information, from
An optional region is swiped the card except suggested guidance field of swiping the card, and successful probability of swiping the card all can be than in guidance of swiping the card
It is high in region.In another example of the present embodiment, processing unit 11 can be according to the parameter that each inductor 14 detects therefrom
Select the inductor 14 of locating regional magnetic field maximum intensity, and swiped the card according to corresponding to the inductor 14 guidance field to
Family is prompted.In this case, user will can directly swipe the card guidance field as swipe the card region realize swipe the card.It is relatively anti-
Face prompts scheme, and the positive prompt scheme user that is more convenient for rapidly and accurately finds the region of swiping the card of excellent effect.
Prompt unit 15 can prompt the user with guidance field of swiping the card by way of voice broadcast.For example, showing in one kind
In example, prompt unit 15 is audio output unit, when processing unit 11 determines the magnetic field of current 10 upper right comer region of card reader
When maximum intensity, using the region as guidance field of swiping the card, and control audio output unit referring to following speech prompt information into
Row prompt: " your card is please moved to card swiping device right regions to swipe the card！"
In another example of the present embodiment, prompt unit 15 can be display screen, and display screen can pass through display text
At least one of word, image show guidance field of swiping the card to user.Continue with the magnetic field strength of 10 right regions of card reader most
For big, processing unit 11 can control display screen and show following text information: " please move the card into card swiping device upper right area
Swipe the card in domain ", as shown in figure 5, to carry out prompting and guiding of swiping the card to user.When prompt unit 15 is display screen,
Guidance field of swiping the card can also be shown by display image information, realization guides swiping the card for user, for example, showing
The breviary schematic diagram of screen display card reader 10, and the maximum region of magnetic field strength is shown in the breviary schematic diagram.Such as Fig. 6 institute
Show, in Fig. 6, the function of card reader 10 is realized by smart phone 60, the NFC on smart phone 60 swipe the card region be located at its back
Face, and be that smart phone 60 is carried on the back according to the magnetic field strength current magnetic field maximum intensity detected, the region for being most suitable for swiping the card
Face center.The thumbnail at itself back side is shown by display screen 61 so showing smart phone 60 in Fig. 6, and at the back side
The center of thumbnail shows the shrinkage signal region 62 in the strongest region of magnetic field strength.User can be according to the instruction of thumbnail
It will be wait the back side center for being placed into smart phone 60 of swiping the card.
Certainly, region of swiping the card accurately is found for the ease of user, display screen can show the text with suggesting effect simultaneously
Word and image, such user can more rapidly and accurately find position of swiping the card accurately in conjunction with two kinds of information.
It should be understood that prompt unit 15 can include audio output simultaneously in other examples of the present embodiment
Unit and display screen, when needing to swipe the card prompt information to user's presentation, display screen and audio output unit pass through vision simultaneously
User is prompted with two levels of the sense of hearing, allow user faster, be easier to find region of swiping the card.Display screen and audio output list
First respectively specific prompting mode is referred to the introduction of front, no longer repeats here.
It is understood that the guidance field of swiping the card introduced in the present embodiment determines that method flow can be integrated in card reading
Prompt facility of swiping the card is formed in device, the miscellaneous function of fast card-reading exists as helping user to realize.When user does not need to swipe the card,
Or swiping the card in card reader can be prompted miscellaneous function to close when wishing that common card-swiping mode is used to swipe the card by user.
Card reader provided in an embodiment of the present invention and guidance field of swiping the card determine method, in card reader near-field communication aerial
It is provided at least two inductors in the coverage area of magnetic field, inductor is detected in magnetic using the law of electromagnetic induction by inductor
Induced current caused by field variation is lower or the size of induced electromotive force, so that it is determined that the magnetic field in region locating for each inductor is strong out
Degree.After the field strength for determining each inductor present position, card reader can select at least one from these inductors, and
Corresponding guidance field of swiping the card is determined according to the inductor selected, and the process of swiping the card of user is carried out based on guidance field is swiped the card
Guidance, avoiding user, blindly the selection region success rate that causes to swipe the card of swiping the card is low, inefficient problem of swiping the card.
Embodiment two:
In order to allow in previous embodiment the card reader provided structure and advantage it is clearer, the present embodiment will continue to preceding
The card reader stated in embodiment is introduced, and refers to Fig. 7:
In the present embodiment card reader 70 can be terminal, such as mobile phone, tablet computer, laptop, palm PC,
Personal digital assistant (Personal Digital Assistant, PDA), portable media player (Portable Media
Player, PMP), navigation device, wearable device, Intelligent bracelet, the mobile terminals such as pedometer, and it is such as number TV, desk-top
The fixed terminals such as computer.
Card reader 70 includes processor 71, memory 72, display screen 73, NFC controller 74, NFC antenna 75, induction coil
76, resistance 77 and comparing unit 78.Wherein, processor 71 respectively with memory 72, display screen 73, NFC controller 74, compared with
Unit 78 connects.
Wherein, NFC controller 74 is connect with NFC antenna 75, NFC controller 74 can be band SE (Secure Element,
Safety element) or without SE function NFC chip, be responsible for that radiofrequency signal will be converted to from the digital signal of processor 71,
And it is sent by NFC antenna 75；On the other hand, the radiofrequency signal that NFC controller 74 can also receive NFC antenna 75 turns
It is changed to digital signal, and inputs to processor 71, to realize related NFC function.
Induction coil 76 can be realized the function of inductor in previous embodiment.It should be understood that due to induction coil
After generating induced current in 76, induction coil 76 can also generate magnetic field, and the magnetic field to a certain extent can be to 75 institute of NFC antenna
The magnetic field of generation has some impact on.Therefore, in order to reduce magnetic field produced by induction coil 76 to the shadow of 75 performance of NFC antenna
It rings, in some examples, induction coil 76 can be made of Ferrite Material, and then reduce eddy current effect, ensure NFC
The performance of antenna 75.Described Ferrite Material can be iron oxide, copper oxide, oxidation with regulation content in the present embodiment
The ambrose alloy zinc series materials of zinc and nickel oxide, in other examples, which can also have some auxiliary materials
Material, such as bismuth oxide, silica, magnesia, the cobalt oxide etc. of regulation content.
According to the introduction of embodiment one it is found that magnetic field produced by NFC antenna 75 should be arranged in each induction coil 76 is covered
Within the scope of lid, induction coil 76 each in this way can just sense magnetic field caused by NFC antenna 75, realize the detection of magnetic field strength.
It is understood that the magnetic field that NFC antenna 75 is radiated covered range be it is bigger, be provided below one kind in NFC
The concrete scheme of deployment induction coil 76 in 75 magnetic field coverage area of antenna:
Fig. 8 shows Distribution of Magnetic Field schematic diagram when Antenna Operation radiation, when aerial radiation magnetic field, generated magnetic field
Distributed areas can be divided into: far-field region 81, radiading near-field region 82 and induction near field region 83, wherein nearest from antenna is induction
Near field region 83.For magnetic field caused by individual pen squaerial, magnetic field strength presentation surrounding is weak, intermediate strong feature, such as Fig. 9
It is shown.Other than the rectangular area that individual pen squaerial is enclosed, field strength is smaller.Although in practical applications, card reader
Not necessarily regular geometric shapes of NFC antenna 75 in 70, but the field strength within the region that is enclosed of NFC antenna 75 must
It is so bigger than field strength other than the region.So in the present embodiment, each induction coil 76 can be arranged at NFC antenna 75
In the upright projection region in enclosed region.It certainly, can also be inside and outside upright projection region other than this set scheme
It is respectively provided with induction coil, only a large amount of induction coil is arranged in the upright projection region, outside upright projection region only
A small amount of induction coil is set.In addition, the present embodiment is not required for for all induction coils 76 being arranged at and 75 phase of NFC antenna
In same plane, also it can be set in other planes.It, can be with for example, when NFC antenna 75 is located on the mainboard of card reader 70
It is covered after card reader 70 is arranged in part induction coil 76.
In conjunction with individual pen squaerial field strength distribution situation it is found that nearer it is to the enclosed region of NFC antenna 75 geometry
Center, magnetic field strength are stronger；And the stronger place of magnetic field strength is more possible to successfully swipe the card.Therefore, in order not to omitting pair
The detection of these region magnetic field strengths that may be suitble to swipe the card, it may be considered that induction coil 76 is affixed one's name in these region multi-sections, and at it
His region can the opposite deployment for reducing induction coil 76.It, can be according to along upright projection in a kind of example of the present embodiment
In edges of regions to the direction at upright projection region geometry center, it is gradually increased the principle setting of the distribution density of induction coil 76
Induction coil 76.As shown in Figure 10, closer to 100 geometric center 101 of upright projection region, induction coil distribution is more intensive, instead
It is more sparse.
The first end of induction coil 76 is connect with the first end of resistance 77, and the number phase of induction coil 76 and resistance 77
Deng, be N, N be more than or equal to 2.So there is the resistance 77 being attached thereto for each induction coil 76.And
And in order to simplify detection mode, the resistance value of each resistance 77 is equal in the present embodiment, and comparing unit 78 passes through to each 77 end of resistance
The size of voltage is compared, and is directly selected outlet voltage maximum one, is equivalent to select the line of induction connected
Circle correspondence is swiped the card guidance field magnetic field strength maximum one.
In a kind of example of the present embodiment, the second end of each induction coil 76 links together, so each line of induction
Circle 76 has an identical common end, and in this case, the induced electromotive force that each induction coil 76 generates is having the same
Reference point, therefore, the electromotive force of comparing unit 78 second ends for needing to compare the resistance 77 being connected with each induction coil 76 are big
It is small.
The mapping relations between each induction coil 76 and guidance field of swiping the card can be characterized being stored in memory 72
Area maps table, after the selection outlet voltage of comparing unit 78 maximum resistance 77, processor 71 can be according to storage
Guidance field of swiping the card locating for the induction coil 76 being connected with the resistance 77 is determined in the area maps table in memory 72.Due to
Each induction coil 76 and resistance 77 are one-to-one in the present embodiment, therefore, reflecting between induction coil 76 and locating region
Penetrate the mapping relations between actually namely each resistance 77 of relationship and region.In a kind of example of the present embodiment, storage
Device 72 is referring to table storage mapping relationship as follows:
Table 1
| Induction coil mark | Resistance mark | It swipes the card guidance field |
| C1 | R1 | Top left region |
| C2 | R2 | Right regions |
| …… | …… | …… |
| Cn | Rn | Hit exactly region |
It should be understood that the line of induction may not necessarily be stored in area maps table in other examples of the present embodiment
It only include resistance identity column and guidance field column of swiping the card in corresponding relationship namely area maps table between circle 76 and resistance 77.
In this case, although what the content in table directly characterized is mapping relations between resistance and guidance field of swiping the card,
Actually the table can also symbolize the induction coil 76 connecting with each resistance 77 and close with the mapping between guidance field of swiping the card
System, because having unique corresponding relation between each resistance 77 and induction coil 76.
After processor 71, which inquires, swipes the card guidance field corresponding to the induction coil 76 of selection, it can be generated to swipe the card and mention
Show information, and show text and/or image using display screen 73, will swipe the card guidance field displaying corresponding to the induction coil 76
To user.Meanwhile area information of swiping the card is understood in order to facilitate user, processor 71 can also control audio output unit and show
Prompt information of swiping the card is broadcasted when prompt information of swiping the card by the way of voice broadcast, prompts user that will be placed on reading wait swipe the card
Corresponding region on card device 70, and then promote success rate of swiping the card.
In other examples of the present embodiment, comparing unit 78 can be realized by comparator, relatively more single in addition to this
The comparing function of member 78 also can integrate in processor 71, be realized by processor 71.It should be understood that when relatively more single
The comparing function of member 78 by processor 71 come when realization, cannot be directly by the second end of each resistance 77 and 71 phase of processor
Even, it needs the end voltage of resistance 77 can be converted into the converting unit of digital signal first with one, will be converted by converting unit
Corresponding terminal voltage value is input in processor 71 afterwards.
A kind of card reader is present embodiments provided, different zones are provided at least two induction coils in the card reader, and
It further include at least two resistance in card reader, each induction coil is connected with each resistance respectively, and the sense of different zones is arranged in these
It answers coil that can incude the magnetic field of NFC antenna generation, and generates induced electromotive force when magnetic field changes.Card reader detects this
The size for the induced electromotive force that a little induction coils generate, and then deduce the magnetic for guidance field of swiping the card corresponding to which induction coil
Field intensity is maximum, is most suitable for swiping the card, and the most suitable region swiped the card determined is prompted to user.
It should be understood that in the present embodiment, card reader selection is that the maximum region of magnetic field strength is prompted to use
Family, in fact, card reader can also recommend the region of magnetic field strength suboptimum to user to user in other examples.Alternatively,
Card reader can also indicate to the user that the minimum guidance field of swiping the card of magnetic field strength, so that user is suitble to brush using exclusive method selection
The region of card.
Embodiment three:
The present embodiment first provides one kind and swipes the card guidance field determining device, and the structure of the device shown in 1 is shown referring to Figure 1
It is intended to:
The guidance field determining device 110 of swiping the card includes detection unit 112, processing unit 114.Wherein detection unit 112
For sensing outside behind generated magnetic field of swiping the card, being detected by least two inductors can be characterized locating for each inductor
The parameter of regional magnetic field intensity, in the present embodiment, each inductor are separately positioned on the covering of card reader near-field communication aerial magnetic field
Different zones in range.Processing unit 114 is used to determine guidance field of swiping the card according to the parameter detected.
Detection unit 112 in the guidance field determining device 110 of swiping the card can be examined by current detection circuit or voltage
Slowdown monitoring circuit realizes that the function of processing unit 114 can be realized individually by processor, can also be by processor and hardware circuit
It is common to realize, for example, processor is in conjunction with comparison circuit.
It swipes the card the prompt scheme of swiping the card in region compared to the existing signal on specification or mobile phone temporary protective film, this implementation
The guidance field determining device 110 of swiping the card of example offer can be based on different zones in the coverage area of card reader near-field communication aerial magnetic field
Magnetic field strength determine guidance field of swiping the card, guaranteeing that user can be selected based on guidance field of swiping the card is suitable for swiping the card of swiping the card
Region is placed wait swipe the card, and realization is swiped the card.The prompting mode for guidance field determining device 110 of swiping the card in the present embodiment is flexible, can
Prompt is made according to the actual magnetic field strength in region each in card reader, for existing scheme, can more be agreed with various to be brushed
The situation of actually swiping the card of card.In order to determine each region is generated by near-field communication aerial in card reader magnetic field strength, the present embodiment
The parameter of magnitude of field intensity will can be characterized using law of electromagnetic induction detection using at least two inductors.
Since the induced current that each inductor generates is directly proportional with magnetic field strength, detection unit in the present embodiment
112 can detecte the induced current of inductor generation to characterize the magnetic field strength in region locating for inductor itself.So in this reality
It applies in a kind of example of example, detection unit 112 can detecte the faradic size that each inductor generates.Due in resistance
One timing of resistance value, it is directly proportional to the voltage swing at resistance both ends by the electric current of resistance, therefore, in a kind of example of the present embodiment
In the middle, detection unit 112 can also characterize magnetic field strength by detecting the voltage for the resistance connecting with inductor.
After detection unit 112 detects the parameter of corresponding region by each inductor, the parameter that can be will test is input to
In processing unit 114.Processing unit 114 can select correspondence from each inductor according to the corresponding parameter of each inductor
Poor one of parameter then inquires the corresponding guidance field of swiping the card of the inductor in area maps table, and carries out to user
Reverse side prompt, it is poor convenient for which regional magnetic field intensity in user's understanding card reader, be not suitable for swiping the card, so that user be helped to exclude
It swipes the card ineffective region, allows user to select one from the stronger region of remnant field intensity and swipe the card.Certainly, it handles
Unit 114 can also be selected from each parameter that detection unit 112 detects parameter preferably at least one, reflected according to region
Firing table determines guidance field of swiping the card corresponding to the optimal inductor of the parameter selected, and front prompt is realized, so as to user's root
The stronger one or several regions of current magnetic field intensity are recognized according to prompt information of swiping the card.
It should be understood that guidance field of swiping the card is the credit card area for being suitble to user card punching in the prompting mode of front
Domain, but in reverse side prompt scheme, guidance field of swiping the card but is not suitable for swiping the card.For example, a kind of example in the present embodiment is worked as
In, processing unit 114 can choose the smallest inductor of locating regional magnetic field intensity according to the parameter that each inductor detects, then
Guidance field of swiping the card corresponding to the inductor is prompted to user.After user, which recognizes, swipes the card prompt information, Cong Suoti
An optional region is swiped the card except the guidance field of swiping the card shown, and successful probability of swiping the card all can be than in guidance field of swiping the card
Middle height.In another example of the present embodiment, the parameter that processing unit 114 can be detected according to each inductor is therefrom selected
The inductor of locating regional magnetic field maximum intensity, and guidance field of being swiped the card according to corresponding to the inductor mentions user
Show.In this case, user will can directly swipe the card guidance field as swipe the card region realize swipe the card.Opposite reverse side prompt side
Case, the positive prompt scheme user that is more convenient for rapidly and accurately find the region of swiping the card of excellent effect.
In a kind of example of the present embodiment, as shown in figure 12, guidance field determining device 110 of swiping the card further includes prompt
Unit 116 mentions after processing unit 114 determines corresponding guidance field of swiping the card according at least one inductor of selection
Show that unit 116 can carry out guidance of swiping the card to user.Prompt unit 116 can prompt the user with brush by way of voice broadcast
Card guidance field.For example, prompt unit 116 can show guidance of swiping the card by the way of voice broadcast in a kind of example
Region guides user card punching, such as prompt unit 906 to be prompted referring to following speech prompt information: " please by your card
Card swiping device right regions are moved to swipe the card！"
In another example of the present embodiment, prompt unit 116 can pass through at least one of display text, image
Issue the user with prompt information of swiping the card.By taking the magnetic field strength of card reader right regions is maximum as an example, prompt unit 116 can be shown
Following text information: " please move the card into card swiping device right regions to swipe the card " realizes the prompt of swiping the card to user.?
It, can also be by display image information come the progress of swiping the card to user when realizing the function of prompt unit 906 by display screen
Guidance for example, prompt unit 116 shows the breviary schematic diagram of card reader, and shows magnetic field strength most in the breviary schematic diagram
Big region.User can will be placed into the corresponding region of card swiping device wait swipe the card according to the instruction of thumbnail.
Certainly, region of swiping the card accurately is found for the ease of user, display screen can show the text with suggesting effect simultaneously
Word and image, such user can more rapidly and accurately find position of swiping the card accurately in conjunction with two kinds of information.It should be understood that at this
In other examples of embodiment, prompt unit 116 can carry out voice broadcast and display reminding simultaneously, be in user in needs
When prompt information of now swiping the card, while user is prompted by two levels of vision and the sense of hearing, display screen and audio output list
First respectively specific prompting mode is referred to the introduction of front, no longer repeats here.
Beyond all doubt, the guidance field determining device of swiping the card provided in the present embodiment is true in realization guidance field of swiping the card
Other details when determining method are referred to the introduction of foregoing embodiments, and which is not described herein again.It should be understood that of the invention
The guidance field of swiping the card provided in each embodiment determines that method can be realized by computer program, and therefore, the present embodiment is also
A kind of computer readable storage medium is provided, is stored in the computer readable storage medium one or more for memory reading
The computer program for taking, compiling or executing, wherein just determining program including guidance field of swiping the card, which determines journey
Sequence executes to realize that the guidance field of swiping the card provided in previous embodiment determines method for processor.
Guidance field determining device provided in an embodiment of the present invention of swiping the card covers in the magnetic field of card reader near-field communication aerial
It is provided at least two inductors in range, inductor is detected using the law of electromagnetic induction under changes of magnetic field by inductor
The size of generated induced current or induced electromotive force, so that it is determined that the magnetic field strength in region locating for each inductor out.True
At least one is selected from these inductors after making the field strength in region locating for each inductor, and according to the inductor selected
Corresponding guidance field of swiping the card guides the process of swiping the card of user, and user is avoided blindly to cause to swipe the card in selection region of swiping the card
Success rate is low, inefficient problem of swiping the card.
Obviously, those skilled in the art should be understood that each module of the embodiments of the present invention or each step can be used
General computing device realizes that they can be concentrated on a single computing device, or be distributed in multiple computing device institutes
On the network of composition, optionally, they can be realized with the program code that computing device can perform, it is thus possible to by them
It is stored in computer storage medium (ROM/RAM, magnetic disk, CD) and is performed by computing device, and in some cases, it can
With the steps shown or described are performed in an order that is different from the one herein, or they are fabricated to each integrated circuit dies
Block, or single integrated circuit module is maked multiple modules or steps in them to realize.So the present invention does not limit
It is combined in any specific hardware and software.
The above content is combining specific embodiment to be further described to made by the embodiment of the present invention, cannot recognize
Fixed specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs,
Without departing from the inventive concept of the premise, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention
Protection scope.
Claims (15)
1. one kind is swiped the card, guidance field determines method, is applied to card reader, this method comprises:
It is external behind generated magnetic field of swiping the card sensing, each inductor can be characterized by the detection of at least two inductors
The parameter of the magnetic field strength in locating region, at least two inductor are separately positioned on card reader near-field communication aerial magnetic field and cover
Different zones within the scope of lid；
The guidance field of swiping the card to be swiped the card is determined according to the parameter detected.
2. guidance field of swiping the card as described in claim 1 determines method, which is characterized in that the parameter that the basis detects is true
After guidance field of swiping the card to be swiped the card described in making, further includes:
The guidance field of swiping the card is prompted by way of voice broadcast；
And/or
The guidance field of swiping the card is prompted by way of showing text and/or image on a display screen.
3. guidance field of swiping the card as claimed in claim 1 or 2 determines method, which is characterized in that described to pass through at least two senses
Answer device detection that can characterize the parameter of magnetic field strength in region locating for each inductor, comprising:
The induced current of at least two inductor is detected respectively as the parameter；
Or,
The end voltage for each substitutional resistance connecting respectively at least two inductor is detected as the parameter.
4. guidance field of swiping the card as claimed in claim 1 or 2 determines method, which is characterized in that the ginseng that the basis detects
Number determines that the guidance field of swiping the card to be swiped the card includes:
According to parameter selection at least one inductor detected by each inductor；
The corresponding guidance field of swiping the card of the inductor selected is inquired from pre-stored area maps table.
5. guidance field of swiping the card as claimed in claim 4 determines method, which is characterized in that the basis passes through each induction
At least one inductor of the parameter selection that device detects includes:
The inductor of locating regional magnetic field maximum intensity is chosen according to the parameter that each inductor detects；
Or,
The smallest inductor of locating regional magnetic field intensity is chosen according to the parameter that each inductor detects.
6. guidance field of swiping the card as claimed in claim 4 determines method, which is characterized in that described to be reflected from pre-stored region
Before inquiring the corresponding guidance field of swiping the card of the inductor selected in firing table, further includes:
The corresponding guidance field of swiping the card of each inductor is determined according to the geometric center of each inductor in the card reader；
Each inductor is stored with the mapping relations between corresponding guidance field of swiping the card into the area maps table.
The guidance field determining device 7. one kind is swiped the card characterized by comprising
Detection unit, for sensing outside behind generated magnetic field of swiping the card, passing through the detection of at least two inductors can table
The parameter of the magnetic field strength in region locating for each inductor is levied, at least two inductor is separately positioned on card reader near field
Different zones in the coverage area of communication antenna magnetic field；
Processing unit, for determining the guidance field of swiping the card to be swiped the card according to the parameter detected.
8. guidance field determining device of swiping the card as claimed in claim 7, which is characterized in that the detection unit for examining respectively
The induced current of at least two inductor is surveyed as the parameter；Or the detection unit for detect respectively with it is described extremely
The end voltage of each substitutional resistance of few two inductors connection is as the parameter.
9. guidance field determining device of swiping the card as claimed in claim 7 or 8, which is characterized in that the processing unit is used for root
According to parameter selection at least one inductor detected by each inductor；It is inquired from pre-stored area maps table
The corresponding guidance field of swiping the card of the inductor selected out.
10. a kind of card reader, which is characterized in that the card reader includes near-field communication aerial, is arranged in the near-field communication day
At least two inductors, detection unit, the processing unit of different zones in the coverage area of line magnetic field；The processing unit is same respectively
The near-field communication aerial, detection unit communication connection；The detection unit is connect with each inductor respectively；
The near-field communication aerial is used to generate magnetic field under the control of the processing unit and the external row information to be brushed that sticks into is handed over
Mutually；The detection unit each inductor by being attached thereto respectively after sensing the external magnetic field caused by swipe the card
Detection can characterize the parameter of the magnetic field strength in region locating for each inductor, and described in the parameter that will test is input to
In processing unit；The processing unit determines the guidance of swiping the card to be swiped the card according to the parameter that the detection unit detects
Region.
11. card reader as claimed in claim 10, which is characterized in that the inductor is to be felt made of Ferrite Material
Answer coil.
12. card reader as claimed in claim 10, which is characterized in that the detection unit is current detecting unit, the electricity
Stream detection unit characterizes regional magnetic field intensity locating for the inductor by detecting the induced current that each inductor generates
Size；Or, the detection unit is voltage detection unit, the voltage detection unit includes connecting respectively with each inductor
The substitutional resistance connect, and the detection device for detecting each substitutional resistance end voltage, the detection device is for detecting
The end voltage of each substitutional resistance characterizes the size of regional magnetic field intensity locating for the inductor connecting with the substitutional resistance.
13. card reader as claimed in claim 10, which is characterized in that the card reader further includes display screen, audio output list
At least one of member；The audio output unit by way of voice broadcast for prompting the guidance field of swiping the card；Institute
Display screen is stated for prompting the guidance field of swiping the card by way of display text and/or image.
14. such as the described in any item card reader of claim 10-13, which is characterized in that each inductor is arranged at described
In the upright projection region in the enclosed region of near-field communication aerial.
15. card reader as claimed in claim 14, which is characterized in that along the upright projection edges of regions to the vertical throwing
On the direction of shadow zone domain geometric center, the distribution density of the inductor is gradually incremented by.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711323278.2A CN109918955A (en) | 2017-12-13 | 2017-12-13 | One kind guidance field of swiping the card determines method, apparatus and card reader |
| PCT/CN2018/110365 WO2019114403A1 (en) | 2017-12-13 | 2018-10-16 | Method for determining card swiping guidance area, apparatus, and card reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711323278.2A CN109918955A (en) | 2017-12-13 | 2017-12-13 | One kind guidance field of swiping the card determines method, apparatus and card reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109918955A true CN109918955A (en) | 2019-06-21 |
Family
ID=66819918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711323278.2A Withdrawn CN109918955A (en) | 2017-12-13 | 2017-12-13 | One kind guidance field of swiping the card determines method, apparatus and card reader |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109918955A (en) |
| WO (1) | WO2019114403A1 (en) |
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| WO2019114403A1 (en) | 2019-06-20 |
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Application publication date: 20190621 |
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