CN105958206A - Magnetic pulse transmitting antenna - Google Patents
Magnetic pulse transmitting antenna Download PDFInfo
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- CN105958206A CN105958206A CN201610438422.6A CN201610438422A CN105958206A CN 105958206 A CN105958206 A CN 105958206A CN 201610438422 A CN201610438422 A CN 201610438422A CN 105958206 A CN105958206 A CN 105958206A
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- 238000004804 winding Methods 0.000 claims abstract description 77
- 230000003993 interaction Effects 0.000 claims abstract description 4
- 230000001965 increasing effect Effects 0.000 claims description 53
- 230000005389 magnetism Effects 0.000 claims description 35
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 16
- 239000000956 alloy Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 229910001004 magnetic alloy Inorganic materials 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 239000011162 core material Substances 0.000 description 89
- 230000005415 magnetization Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 10
- 230000003068 static effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2216—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in interrogator/reader equipment
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Abstract
The embodiment of the invention discloses a magnetic pulse transmitting antenna which is applied to mobile payment equipment and is used for transmitting a magnetic pulse signal for data interaction with a card reader. The magnetic pulse transmitting antenna comprises a magnetic core and a transmitting coil, wherein the magnetic core is of a sheet structure; the transmitting coil is wound on a coil winding part of the magnetic core in closely adjacent and non-stacked manners; the magnetic pulse transmitting antenna transmits a payment message generated by the mobile payment equipment for payment to the card reader in a manner of the magnetic pulse signal; and a magnetic head of the card reader recognizes the magnetic pulse-tokenized payment message and carries out payment. The strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna can be improved within a certain distance by limiting the shape and the thickness of the magnetic core of the magnetic pulse transmitting antenna, so that the magnetic pulse signal can be better captured by the magnetic head of a POS terminal; and the payment experience is improved.
Description
Technical Field
The invention belongs to the field of mobile payment, and particularly relates to a magnetic pulse transmitting antenna.
Background
Chinese patent publication No. CN204926176U, entitled "an offline mobile payment system", discloses an offline mobile payment system, which includes: the encoding unit is used for taking source data containing bank card magnetic stripe information as input and generating a pulse signal matched with the source data; the waveform modulation unit is used for taking the pulse signal as input and generating a modulation signal matched with the pulse signal; the smart phone is used for receiving and outputting the modulation signal; the magnetic pulse transmitter is used for receiving the modulation signal from the smart phone, converting the modulation signal into a magnetic pulse signal and outputting the magnetic pulse signal; and the POS terminal is used for receiving the magnetic pulse signal from the magnetic pulse transmitter through a magnetic head of the POS terminal, converting the magnetic pulse signal into magnetic stripe information data of a bank card and paying. In the technical solution of the above patent, the magnetic pulse transmitter includes a magnetic pulse transmitting terminal (i.e. a magnetic pulse transmitting antenna) composed of a magnet and a transmitting coil wound on the magnet, and the magnetic pulse transmitting antenna can convert the modulated signal into a magnetic pulse signal and transmit the magnetic pulse signal to the magnetic head of the POS terminal.
The magnetic pulse transmitting antenna used for the mobile payment device is generally in a rectangular sheet structure, in order to obtain a better simulation card swiping effect when the magnetic pulse transmitting antenna is used for simulating bank card swiping payment at the magnetic head of the POS terminal (namely the magnetic pulse transmitting antenna transmits a magnetic pulse signal to the magnetic head of the POS terminal better), when the card swiping payment is simulated, the plane where the magnetic pulse transmitting antenna is located is generally better by a card swiping slot parallel to the POS terminal (for the POS terminal with a vertical slot card swiping slot). As shown in fig. 1, a schematic diagram of a POS terminal 2 with a vertical slot card swiping slot 3a, a mobile payment device (key ring shape) 1 with a magnetic pulse transmitting antenna inside, and a simulated bank card swiping payment of the mobile payment device 1 close to the POS terminal 2 is shown. The magnetic pulse transmitting antennas in the sheet structure are longitudinally arranged in parallel inside the mobile payment device 1, and when the mobile payment device 1 shown in fig. 1 is close to the card swiping slot 3a of the POS terminal 2 in parallel, the plane where the magnetic pulse transmitting antennas are located is also parallel to the card swiping slot 3a, and at this time, the magnetic head of the POS terminal 2 can obtain a better magnetic pulse signal capturing effect.
However, as shown in fig. 2, when the mobile payment device 1 is placed at another angle with respect to the card slot of the POS terminal 2, the effect of capturing the magnetic pulse signal by the magnetic head of the POS terminal 2 is inferior to the placement angle shown in fig. 2, taking two specific angles shown in fig. 3 to 4 as examples. If the mobile payment device 1 is placed at a distance from the magnetic head of the POS terminal, the magnetic head of the POS terminal 2 may fail to capture the magnetic pulse signal, which is not favorable for enhancing the user satisfaction and payment experience of the mobile payment device.
Similarly, the POS terminal with the horizontal slot card swiping slot has the above problem of simulating the angle of the mobile payment device when swiping the card for payment by the POS terminal with the vertical slot card swiping slot. The mobile payment device simulation card swiping example shown in fig. 5 is a preferred placement embodiment, which shows that the POS terminal 2 with the transverse slot card swiping slot 3b and the mobile payment device (key ring shape) 1 with the magnetic pulse transmitting antenna arranged inside and the mobile payment device 1 simulate the bank card swiping payment close to the POS terminal 2, and the two mobile payment device simulation card swiping examples shown in fig. 6 and 7 are poor. In addition, the magnetic head of the POS terminal with the transverse slot card swiping slot is sometimes located at a deeper position of the card swiping slot, and even if the placement angle example shown in fig. 5 is adopted, sometimes the magnetic pulse transmitting antenna is further away from the magnetic head because the magnetic head is located at a deeper position, resulting in a poor magnetic pulse signal capturing effect of the magnetic head on the output of the magnetic pulse transmitting antenna.
In addition, the structure of a conventional magnetic pulse transmitting antenna is generally: the magnetic pulse transmitting antenna is characterized in that a framework is arranged outside the magnetic core, the transmitting coil is wound on the framework, and due to the existence of the framework, the size of the magnetic pulse transmitting antenna is increased to some extent, so that the magnetic pulse transmitting antenna is not beneficial to being embedded into mobile payment equipment.
Although a typical magnetic field distribution can be obtained by a regular magnetic pulse transmitting antenna having a rectangular parallelepiped sheet structure, in consideration of the above-mentioned various situations in which the effect of capturing magnetic pulse signals is poor, it is necessary to make a targeted improvement on the shape or structure of the magnetic pulse transmitting antenna.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the magnetic pulse transmitting antenna, and the magnetic pulse transmitting antenna can improve the strength of a magnetic pulse signal transmitted by the magnetic pulse transmitting antenna within a certain distance by limiting the shape and the thickness of a magnetic core of the magnetic pulse transmitting antenna, so that the magnetic pulse signal can be better captured by a magnetic head of a POS terminal, and the payment experience is improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
a magnetic pulse transmitting antenna is applied to mobile payment equipment and used for transmitting a magnetic pulse signal to perform data interaction with a card reader, and comprises a magnetic core and a transmitting coil, wherein the magnetic core is of a sheet structure, and the transmitting coil is wound on a coil winding part of the magnetic core in a manner of being closely adjacent and not mutually laminated; wherein,
the magnetic pulse transmitting antenna transmits a payment message for payment generated by the mobile payment device to the card reader in a magnetic pulse signal mode, and the magnetic head of the card reader identifies the payment message marked by the magnetic pulse and carries out payment.
In a preferred embodiment, the coil winding portion of the magnetic core has a rectangular sheet structure.
In a preferred embodiment, the magnetic core further comprises magnetization increasing portions arranged at two ends of the coil winding portion and used for increasing the strength of the magnetic pulse signal.
In a preferred embodiment, the coil winding portion and the magnetism increasing portion are integrally provided.
In a preferred embodiment, the size of the side of the magnetism increasing part connected with the coil winding part of the magnetism increasing part is larger than or equal to the size of the side of the coil winding part connected with the magnetism increasing part.
In a preferred embodiment, the side of the magnetic increasing part connected with the coil winding part has a size greater than or equal to the size of the opposite side.
In a preferred embodiment, a magnetic diffusion part perpendicular to the rectangular surface of the coil winding part is arranged along the bottom of the side edge of the magnetic enhancement part connected with the coil winding part.
In a preferred embodiment, the thickness of the magnetic core is 0.05-0.7 mm.
In a preferred embodiment, the effective action distance of the payment message transmitted by the magnetic pulse transmitting antenna to the magnetic head of the card reader in the form of a magnetic pulse signal is 0-7 cm.
In a preferred embodiment, the saturation induction of the magnetic core is 0.72-1.8T.
In a preferred embodiment, the effective permeability of the core is greater than 6.25 mH/m.
In a preferred embodiment, the coercivity of the magnetic core is 0.16A/m to 16A/m.
In a preferred embodiment, the material of the magnetic core comprises a nickel-based soft magnetic alloy material, and the nickel-based soft magnetic alloy material contains 36 wt% to 87 wt% of nickel.
In a preferred embodiment, the effective working temperature of the magnetic pulse transmitting antenna is-35 ℃ to 88 ℃.
In a preferred embodiment, the length ratio of one side edge of the coil winding part to the adjacent side edge is 1.5-3.
In a preferred embodiment, the material of the transmitting coil is silver, copper, aluminum or an alloy.
The invention has the following beneficial effects:
1. the magnetic field intensity at two ends of the coil winding part of the magnetic pulse transmitting antenna is improved by arranging the magnetism increasing parts with different sizes and shapes at two ends of the coil winding part in the middle of the magnetic core;
2. the thickness of the magnetic pulse antenna is limited in a preferred range, so that the strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna can be improved;
3. the magnetic pulse antenna adopts a frameless design, and the strength of a magnetic pulse signal transmitted by the magnetic pulse transmitting antenna can be further improved by directly winding the transmitting coil on the exposed metal magnetic core;
4. only the shape and the thickness of the magnetic core are changed, the process is simple, the realization difficulty is low, and the production cost is controlled.
Drawings
FIGS. 1-4 are schematic diagrams of a mobile payment device being used to swipe a card at different orientations for a POS having a longitudinal swipe slot;
FIGS. 5-7 are schematic diagrams of a mobile payment device being used to swipe cards in different orientations for a POS with a horizontal swipe slot;
FIG. 8a is a perspective view of a magnetic pulse transmitting antenna in accordance with an embodiment of the present invention;
FIG. 8b is a diagram of the distribution of the static magnetic lines on the plane of the long central axis of the coil of FIG. 8a when the coil is energized with static constant current;
FIGS. 9a and 9b are a cross-sectional view and a perspective view of a magnetic pulse transmitting antenna in an embodiment of the present invention;
fig. 9c is a static magnetic force line distribution diagram on the plane where the long central axis of the coil is located when the coil in fig. 9a and 9b is electrified with static constant current;
FIGS. 10a and 10b are a cross-sectional view and a perspective view of a magnetic pulse transmitting antenna in an embodiment of the present invention;
FIGS. 10c and 10d are cross-sectional and perspective views of a magnetic pulse transmitting antenna in an embodiment of the present invention;
FIGS. 11a and 11b are a cross-sectional view and a perspective view of a magnetic pulse transmitting antenna in an embodiment of the present invention;
FIGS. 11c and 11d are a cross-sectional view and a perspective view of a magnetic pulse transmitting antenna in an embodiment of the present invention;
FIG. 11e is a static magnetic force line distribution diagram on the plane of the long central axis of the coil in FIG. 11c and FIG. 11d when the coil is energized with static constant current according to the present invention;
FIGS. 12a and 12b are cross-sectional views of a magnetic pulse transmitting antenna in two different orientations in accordance with an embodiment of the present invention;
FIG. 12c is a perspective view of the magnetic pulse transmitting antenna corresponding to that shown in FIG. 12 a;
FIGS. 13a and 13b are a cross-sectional view and a perspective view of a magnetic pulse transmitting antenna in an embodiment of the present invention;
fig. 13c is a perspective view of the magnetic pulse transmitting antenna corresponding to fig. 13 a.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a magnetic pulse transmitting antenna which can be applied to mobile payment equipment and is used for transmitting a magnetic pulse signal to perform data interaction with a magnetic head of a card reader/smart card reader (a POS terminal is taken as an example in the specific embodiment of the invention). In a specific application example, the mobile payment device carrying the magnetic pulse transmitting antenna provided by the invention can send a payment message for payment in a form of a magnetic pulse signal in a short distance, a magnetic head of a POS terminal captures the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna, a POS message is generated and sent to a POS operator, the POS operator settles accounts with a receipt network, and feeds back an electronic payment result to the POS terminal, and the POS terminal prints a payment receipt to complete a card-less mobile payment process under line. Specifically, the magnetic pulse transmitting antenna provided by the invention comprises a magnetic core and a transmitting coil, wherein the magnetic core is of a sheet structure, and the transmitting coil is wound on a coil winding part of the magnetic core in a manner of being closely adjacent and not mutually laminated. Compared with the prior art that the coil is wound on the framework outside the magnetic core, the invention adopts a winding mode without the framework, and the transmitting coil is directly wound on the magnetic core with the sheet structure, so that the closed magnetic force lines can be dispersed more open and uniform in a card swiping space area, and better payment experience is brought.
In an alternative embodiment of the present invention, the winding portion of the magnetic core is a rectangular sheet (or strip) structure. Specifically, as shown in fig. 8a, the magnetic core has a rectangular sheet shape, and the metal coil 20 is wound around the coil winding portion 10 of the magnetic core in such a manner that the metal coil is closely adjacent to the coil winding portion and is not stacked on each other. It should be noted that, for the sake of convenience and clarity of illustration, the coils shown in the drawings are not wound around the coil winding portions 10 of the magnetic core in a manner of being closely adjacent to each other and not stacked on each other, but this does not affect the scope of the present invention.
In an optional embodiment of the present invention, the magnetic core further comprises a magnetism increasing portion disposed at both ends of the coil winding portion for increasing the strength of the magnetic pulse signal. In an alternative embodiment of the present invention, the coil winding portion is provided integrally with the magnetism increasing portion. For example, the coil winding part and the magnetism increasing part may be formed by one-time press molding or cutting molding, the region of the magnetic core middle part for winding the coil is defined as the coil winding part, and the regions of the magnetic core coil winding part at both ends are defined as the magnetism increasing parts. Also in the present invention, the magnetization increasing portions at both ends of the coil winding portion may have various shapes, which will be described further below.
In an optional embodiment of the invention, the effective acting distance of the payment message for payment transmitted by the magnetic pulse transmitting antenna to the magnetic head of the card reader in a magnetic pulse signal mode is 0-7 cm. It should be noted that the effective range described herein is a range at which the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna can be effectively captured by the magnetic head of the POS terminal, and does not represent an actual range of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna. In practical application, although the distance of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna is larger than the maximum value of the effective acting distance, the signal strength is insufficient due to the excessively long distance, and further the magnetic pulse signal can not be effectively captured by the magnetic head of the POS terminal, so that in order to ensure the payment experience of a user, the effective acting distance from the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna to the magnetic head of the POS terminal is 0-7 cm through testing, and the requirement of payment by using mobile payment can be completely met.
In an optional embodiment of the present invention, the saturation induction of the magnetic core is 0.72 to 1.8T.
In an alternative embodiment of the invention, the core has an effective permeability of 6.25 mH/m.
In an alternative embodiment of the invention, the coercivity of the magnetic core is between 0.16A/m and 16A/m.
The magnetic core with different saturation magnetic induction strengths, effective magnetic permeability and coercive force is selected for testing and then obtained, the magnetic pulse signal strength transmitted within a certain distance by the magnetic pulse transmitting antenna can be enhanced by adopting the magnetic core with the performance, and the payment experience of a user is further improved.
In an alternative embodiment of the invention, the material of the magnetic core comprises a nickel-based soft magnetic alloy material, and the selected nickel-based soft magnetic alloy material contains 36 wt% to 87 wt% of nickel. It should be noted that the above-mentioned magnetic core materials are only selected materials in consideration of the performance and manufacturing cost of the magnetic pulse transmitting antenna, and other materials may be selected in consideration of other relevant factors, which are not described herein again.
In an alternative embodiment of the invention, the effective operating temperature of the magnetic pulse transmitting antenna is-35 ℃ to 88 ℃. It should be noted that the effective operating temperature of the magnetic pulse transmitting antenna described herein is a temperature that can ensure the normal use of the magnetic pulse transmitting antenna, and the temperature range can be applied to most payment scenarios.
In an alternative embodiment of the present invention, the size of the side of the magnetism increasing part connected to the coil winding part is greater than or equal to the size of the side of the coil winding part connected to the magnetism increasing part.
Example one
Referring to fig. 9a and 9b, an embodiment of a magnetic pulse transmitting antenna provided by the present invention is shown in a situation, in which a magnetic core is roughly shaped like an i, and is composed of a coil winding part 10 in the middle and magnetism increasing parts 11 located at both sides of the coil winding part, the side of the magnetism increasing part 11 connected to the coil winding part 10 of the magnetism increasing part 11 has a size larger than that of the side of the coil winding part 10, and a metal coil 20 is wound around the coil winding part 10 in a closely adjacent manner without being stacked on each other. It should be noted that, since the coil winding part 10 and the magnetism increasing part 11 are integrally provided, the dotted line shown in the figure does not exist in the actual object, and the dotted line shown in the figure is only used for conveniently distinguishing the coil winding part 10 and the magnetism increasing part 11, and is not described herein again.
In addition, when the dimension of the side of the magnetism increasing portion 11 connected to the coil winding portion 10 of the magnetism increasing portion 11 is equal to the dimension of the side of the coil winding portion 10, since the magnetism increasing portion 11 and the coil winding portion 10 are integrally provided, the magnetism increasing portion 11 and the coil winding portion 10 are combined together to form an integral rectangular sheet-shaped magnetic core, which is shown in fig. 8a and will not be described herein again.
In an alternative embodiment of the present invention, the dimension of the side of the magnetism increasing part 11 where the magnetism increasing part 11 is connected with the coil winding part 10 is larger than or equal to the dimension of the opposite side. Several scenarios that may exist in this embodiment are further described below.
Example two
Referring to fig. 10a and 10b, which illustrate an embodiment of a magnetic pulse transmitting antenna provided by the present invention in one case, a magnetic core is composed of a coil winding part 10 in the middle and magnetizing parts 11 provided at both ends of the coil winding part 10, and a metal coil 20 is wound around the coil winding part 10 in a closely adjacent manner without being laminated to each other; here, the side L1 of the magnetism increasing portion 11 connected to the coil winding portion 10 of the magnetism increasing portion 11 is larger than the side L2 thereof, that is, the length of L1 is larger than the length of L2 in the drawing, so the magnetic core can be regarded as being composed of the coil winding portion 10 and the trapezoidal magnetism increasing portions 11 provided at both ends of the coil winding portion 10. In another alternative embodiment, the dimension of the side L2 of the side L1 of the magnetism increasing portion 11 connected to the coil winding portion 10 is further reduced to make the length of L2 infinitely close to 0, in this case, assuming that the length of L2 is equal to 0 in an extreme case (actually, it is not equal to 0, but the length of L2 can be considered to be 0 because the value is too small), the schematic diagram of the magnetic pulse transmitting coil can be shown in fig. 10c and 10d, and the magnetic core of the magnetic pulse transmitting coil is composed of the coil winding portion 10 and the magnetism increasing portions 11 arranged at both ends of the coil winding portion 10 and having a triangular shape.
EXAMPLE III
In addition to the first and second embodiments, the shapes of the magnetization increasing portions 11 on both sides of the coil winding portion 10 can be further expanded, as shown in fig. 11a and 11b, the size of the side of the magnetization increasing portion 11 connected to the coil winding portion 10 of the magnetization increasing portion 11 is larger than the size of the side of the coil winding portion 10, and the size of the side L1 of the magnetization increasing portion 11 connected to the coil winding portion 10 of the magnetization increasing portion 11 is larger than the size of the opposite side L2, that is, the two ends of the coil winding portion 10 are provided with the ladder-shaped magnetization increasing portions 11, and compared with the second embodiment, the present embodiment is different in that the size of the side of the magnetization increasing portion 11 connected to the coil winding portion 10 of the magnetization increasing portion 11 is larger than the size of the side of the coil winding portion 10. The magnetic pulse emitting antenna shown in fig. 11a and 11b may be further extended in shape, and the dimension of the side L2 of the side L1 of the magnetic field increasing portion 11 connected to the coil winding portion 10 may be further reduced to make the length of L2 infinitely close to 0 while ensuring that the dimension of the side L11 of the magnetic field increasing portion 11 connected to the coil winding portion 10 is larger than the dimension of the side L10 of the coil winding portion 11, thereby forming the configurations shown in fig. 11c and 11 d.
When the mobile payment device with the magnetic pulse transmitting antenna is used for simulating card swiping, in order to enable the magnetic head of the POS terminal to better capture the magnetic pulse signal sent by the mobile payment device, the mobile payment device is preferably close to the POS terminal as much as possible, and multiple times of test data show that the distance between the magnetic pulse transmitting antenna and the magnetic head of the POS terminal is the optimal card swiping distance within 2 cm. For this reason, 3 kinds of magnetic cores with different shapes are selected, the middle point of the plane where the magnetic core is located is selected as the origin 0 (that is, X is 0), and a hall sensor (hall sensor of gauss meter, hereinafter referred to as sensor) parallel to the plane where the magnetic core is located is respectively placed at different heights and on both sides of the X axis to measure the magnetic field intensity data. The X-axis direction is consistent with the transverse extending direction of the plane where the magnetic pulse transmitting antenna is located, the coordinate of the sensor on the X-axis is 0, and when the sensor is used for measuring, the sensor moves to the two sides of the X-axis by taking 0 as the origin of coordinates to measure; in addition, Z is expressed as the distance between the sensor and the core, i.e. the height of the sensor as described above. Considering the complexity of the experiment and considering that the distance between the magnetic pulse transmitting antenna and the magnetic head of the POS terminal is generally less than 2cm when actually simulating card swiping, only experimental data with Z between 0-12 mm and X between +/-16 mm is provided.
Table 1 is a table of magnetic field modulus values measured at different heights in the case where a magnetic core having a rectangular overall shape (i.e., the shape of the magnetic core shown in fig. 8 a) is selected, where X is 0 and Z is 0, which is the origin coordinate in the table; table 2 is a table of magnetic field moduli measured at different heights (i.e., the shapes of the cores shown in fig. 9a and 9 b) for the case where the i-shaped cores are selected; table 3 is a table of magnetic field modulus measured at different heights by the sensor in the case where the triangular magnetization portions 11 (i.e., the shapes of the cores shown in 11c and 11 d) are provided on both sides of the coil winding portion 10, where the units of the numbers in the X row and the Z column are both millimeters and the unit of the magnetic field strength is gaussian.
Comparing the 3 sets of measured data, it can be found that, regardless of whether the magnetic pulse transmitting antenna with the i-shaped magnetic core shown in fig. 9b or the magnetic pulse transmitting antenna with the magnetic core having the triangular magnetization portions 11 at both ends of the coil winding portion 10 shown in fig. 11d is used as the test object, most of the magnetic field strength measured by the sensor is greater than that in the same coordinate system when the magnetic pulse transmitting antenna with the magnetic core having the rectangular overall shape shown in fig. 8a is used as the test object. For example, it was found that the magnetic pulse transmitting antenna of 3 kinds of core shapes selected can measure the strongest magnetic field strength when the sensor coordinate is X ± 12 or X ± 16 and Z is 0, and for example, when the magnetic pulse transmitting antenna shown in fig. 8a is selected as the test object, the largest magnetic field strength can be measured as 15.42 gauss (Gs) when the sensor coordinate is X16 or Z is 0; when the i-shaped magnetic pulse transmitting antenna shown in fig. 9b is selected as a test object, the maximum magnetic field intensity can be measured to be 21.37 gauss when the sensor coordinate is 16 and Z is 0; when the magnetic pulse transmitting antenna shown in fig. 11d was selected as the test object, the maximum magnetic field intensity was 18.49 gauss when the sensor coordinates were 12 and 0, respectively.
In addition, the magnetic field intensity of the magnetic pulse transmitting antenna with three shapes under the condition of several sets of coordinates is listed for comparison: when the coordinates X-16 and Z-12 are selected, the strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna shown in fig. 8a is measured to be 1.78 gauss, the strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna shown in fig. 9b is measured to be 2.22 gauss, and the strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna shown in fig. 11d is measured to be 2.19 gauss;
when the coordinates X-12 and Z-8 are selected, the strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna shown in fig. 8a is measured to be 3.48 gauss, the strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna shown in fig. 9b is measured to be 4.16 gauss, and the strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna shown in fig. 11d is measured to be 4.0 gauss;
when the coordinate is selected to be X ═ 4 and Z ═ 0, the strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna shown in fig. 8a is measured to be 8.9 gauss, the strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna shown in fig. 9b is measured to be 9.34 gauss, and the strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna shown in fig. 11d is measured to be 9.77 gauss;
when the coordinate is selected to be 8 and Z is 8, the strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna shown in fig. 8a is measured to be 2.76 gauss, the strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna shown in fig. 9b is measured to be 3.6 gauss, and the strength of the magnetic pulse signal transmitted by the magnetic pulse transmitting antenna shown in fig. 11d is measured to be 4.10 gauss;
when the coordinates X and Z are 16 and 8, the strength of the magnetic pulse signal emitted from the magnetic pulse transmitting antenna shown in fig. 8a is measured to be 2.57 gauss, the strength of the magnetic pulse signal emitted from the magnetic pulse transmitting antenna shown in fig. 9b is measured to be 4.10 gauss, and the strength of the magnetic pulse signal emitted from the magnetic pulse transmitting antenna shown in fig. 11d is measured to be 3.59 gauss. The data comparison can verify the idea of the present invention that the strength of the magnetic pulse signal emitted by the conventional magnetic pulse emitting antenna with the rectangular sheet-shaped magnetic core can be improved by changing the shape of the antenna, which is not described herein again.
Table 1
Table 2
Table 3
Referring to fig. 8b, fig. 9c, and fig. 11e, which respectively show the static magnetic force line distribution patterns on the plane where the long central axis of the magnetic pulse transmitting antenna is located when the coil of the magnetic pulse transmitting antenna with three different magnetic cores is supplied with static steady current, it can be seen that, as the shape of the magnetic core changes, the static magnetic force line distribution on the plane where the long central axis of the magnetic pulse transmitting antenna is located also changes, which results in the change of the signal intensity of the magnetic pulse. In fig. 8b, 9c, and 11e, the horizontal coordinate represents the X-axis coordinate, and the vertical coordinate represents the Y-axis coordinate.
In an alternative embodiment of the present invention, a magnetic diffusion portion perpendicular to the rectangular surface of the coil winding portion 10 is provided along the bottom of the side edge of the magnetic gain portion 11 connected to the coil winding portion 10. Several scenarios that may exist in this embodiment are further described below.
Example four
Referring to fig. 12a to 12c, the magnetism increasing portion 11 and the coil winding portion 10 are connected to form a magnetic core having a rectangular sheet shape as a whole, and a magnetism increasing portion 12 perpendicular to the rectangular surface of the coil winding portion 10 is provided at the bottom of the side where the magnetism increasing portion 11 and the coil winding portion 10 are connected to each other. In addition, in the case of the first, second and third embodiments, a magnetic expansion part 12 may be additionally added to the bottom of the magnetic increase part 11, for example, as shown in fig. 13a and 13b, which is an improvement made with respect to fig. 10 d.
In an alternative embodiment of the present invention, the length ratio of one side of the coil winding portion 10 to the adjacent side is 1.5 to 3.
In an alternative embodiment of the invention, the thickness of the magnetic core is 0.05-0.7 mm. Repeated experiments prove that the magnetic core with the thickness of 0.2mm is selected as the best under the drive of the existing drive circuit, and the requirement for maximizing the performance of the magnetic pulse transmitting antenna can be well met no matter the strength of the transmitted magnetic pulse signal, the effective acting distance of the transmitted signal or other factors which are beneficial to improving the performance of the magnetic pulse transmitting antenna. Tables 4-6 list the field strength at three different thicknesses using rectangular cores, where table 4 is the field strength measured at different orientations using a 0.08mm core, table 5 is the field strength measured at different orientations using a 0.2mm core, and table 6 is the field strength measured at different orientations using a 0.45mm core. It should be noted that the test rules adopted in tables 4 to 6 are the same as the test rules in tables 1 to 3, and detailed description thereof is omitted here.
Comparing the 3 groups of measured data can obtain that the magnetic field intensity measured by the magnetic pulse transmitting antenna adopting the magnetic core with the thickness of 0.2mm in each direction is greater than the magnetic field intensity measured by the magnetic pulse transmitting antenna with the thickness of 0.08mm and the magnetic pulse transmitting antenna with the thickness of 0.45 mm. For example, it was found that the magnetic pulse emitting antenna with 3 selected thicknesses of magnetic core was able to measure the strongest magnetic field strength when the sensor coordinates were X-16 and Z-0. The magnetic field intensity measured by the magnetic pulse transmitting antenna with the magnetic core with the thickness of 0.08mm is 16.48 gauss, the magnetic field intensity measured by the magnetic pulse transmitting antenna with the magnetic core with the thickness of 0.2mm is 17.28 gauss, and the magnetic field intensity measured by the magnetic pulse transmitting antenna with the magnetic core with the thickness of 0.45mm is 14.75 gauss.
In addition, the magnetic field intensity of the magnetic pulse transmitting antenna with three shapes under the condition of several sets of coordinates is listed for comparison: when the coordinates of the magnetic pulse emitting antenna of the magnetic core with the thickness of 0.08mm are-16 and the coordinates of the magnetic pulse emitting antenna of the magnetic core with the thickness of 0.45mm are 12, the intensity of the magnetic field measured by the magnetic pulse emitting antenna of the magnetic core with the thickness of 0.08mm is 1.73 gauss, the intensity of the magnetic field measured by the magnetic pulse emitting antenna of the magnetic core with the thickness of 0.2mm is 2.13 gauss, and the intensity of the magnetic field measured by the magnetic pulse emitting antenna of the magnetic core with;
when the coordinates are selected to be X-12 and Z-8, the magnetic field intensity measured by the magnetic pulse transmitting antenna of the magnetic core with the thickness of 0.08mm is 3.37 gauss, the magnetic field intensity measured by the magnetic pulse transmitting antenna of the magnetic core with the thickness of 0.2mm is 4.03 gauss, and the magnetic field intensity measured by the magnetic pulse transmitting antenna of the magnetic core with the thickness of 0.45mm is 3.41 gauss;
when the coordinates are selected to be X-12 and Z-8, the magnetic field intensity measured by the magnetic pulse transmitting antenna of the magnetic core with the thickness of 0.08mm is 3.37 gauss, the magnetic field intensity measured by the magnetic pulse transmitting antenna of the magnetic core with the thickness of 0.2mm is 4.03 gauss, and the magnetic field intensity measured by the magnetic pulse transmitting antenna of the magnetic core with the thickness of 0.45mm is 3.41 gauss;
when the coordinate is selected to be X-8 and Z-4, the magnetic field intensity measured by the magnetic pulse transmitting antenna of the magnetic core with the thickness of 0.08mm is 5.50 gauss, the magnetic field intensity measured by the magnetic pulse transmitting antenna of the magnetic core with the thickness of 0.2mm is 6.48 gauss, and the magnetic field intensity measured by the magnetic pulse transmitting antenna of the magnetic core with the thickness of 0.45mm is 6.37 gauss;
when the coordinate is 12 and 8, the magnetic field intensity measured by the magnetic pulse transmitting antenna of the magnetic core with the thickness of 0.08mm is 2.98 gauss, the magnetic field intensity measured by the magnetic pulse transmitting antenna of the magnetic core with the thickness of 0.2mm is 3.96 gauss, and the magnetic field intensity measured by the magnetic pulse transmitting antenna of the magnetic core with the thickness of 0.45mm is 3.44 gauss;
when the coordinates of X and Z are 16 and 12, the magnetic field intensity measured by the magnetic pulse transmitting antenna with the 0.08 mm-thick magnetic core is 1.75 gauss, the magnetic field intensity measured by the magnetic pulse transmitting antenna with the 0.2 mm-thick magnetic core is 2.58 gauss, and the magnetic field intensity measured by the magnetic pulse transmitting antenna with the 0.45 mm-thick magnetic core is 1.85 gauss.
From the above data, it can be shown that, in the magnetic pulse transmitting antenna using the magnetic core with the thickness of 0.08mm or 0.45mm, the magnetic field intensity measured in the main direction is smaller than that measured by using the magnetic pulse transmitting antenna with the thickness of 0.2mm, and it can be proved that the best technical effect can be obtained when the thickness of the magnetic core of the magnetic pulse transmitting antenna is 0.2 mm.
Table 4
Table 5
Table 6
In an alternative embodiment of the invention, the material of the transmitting coil is silver, copper, aluminum or an alloy.
It is to be understood that the exemplary embodiments described herein are illustrative and not restrictive. Although one or more embodiments of the present invention have been described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
Claims (16)
1. A magnetic pulse transmitting antenna is applied to mobile payment equipment and used for transmitting a magnetic pulse signal to perform data interaction with a card reader, and is characterized by comprising a magnetic core and a transmitting coil, wherein the magnetic core is of a sheet structure, and the transmitting coil is wound on a coil winding part of the magnetic core in a manner of being closely adjacent and not mutually laminated; wherein,
the magnetic pulse transmitting antenna transmits a payment message for payment generated by the mobile payment device to the card reader in a magnetic pulse signal mode, and the magnetic head of the card reader identifies the payment message marked by the magnetic pulse and carries out payment.
2. The magnetic pulse transmitting antenna according to claim 1, wherein the coil winding portion of the magnetic core has a rectangular plate-like structure.
3. The magnetic pulse transmitting antenna according to claim 2, wherein said magnetic core further comprises a magnetism increasing portion provided at both ends of the coil winding portion for increasing the strength of the magnetic pulse signal.
4. A magnetic pulse transmitting antenna according to claim 3, wherein said coil winding portion is provided integrally with the magnetism increasing portion.
5. A magnetic pulse transmitting antenna according to claim 3 or 4, wherein the dimension of the side of the magnetism increasing portion to which the magnetism increasing portion is connected is larger than or equal to the dimension of the side of the coil winding portion to which it is connected.
6. The magnetic pulse transmitting antenna according to claim 5, wherein the side of the magnetism increasing portion connected to the coil winding portion has a size larger than or equal to the size of the opposite side thereof.
7. A magnetic pulse transmitting antenna according to claim 3 or 4, wherein a magnetic field expansion portion perpendicular to the rectangular surface of the coil winding portion is provided along the bottom of the side of the magnetic field increasing portion connected to the coil winding portion.
8. A magnetic pulse transmitting antenna according to any of claims 1 to 4 or 6, wherein said magnetic core has a thickness of 0.05 to 0.7 mm.
9. The magnetic pulse transmitting antenna according to claim 8, wherein the effective range of the magnetic pulse transmitting antenna for transmitting the payment message to the magnetic head of the card reader by means of the magnetic pulse signal is 0-7 cm.
10. The magnetic pulse transmitting antenna according to claim 8, wherein said magnetic core has a saturation induction of 0.72 to 1.8T.
11. A magnetic pulse transmitting antenna according to claim 8, wherein said core has an effective magnetic permeability of greater than 6.25 mH/m.
12. The magnetic pulse transmitting antenna according to claim 8, wherein the coercive force of said magnetic core is 0.16A/m to 16A/m.
13. The magnetic pulse transmitting antenna according to claim 8, wherein the material of said magnetic core comprises a nickel-based soft magnetic alloy material containing 36 to 87 wt% of nickel.
14. A magnetic pulse transmitting antenna according to claim 9, wherein said magnetic pulse transmitting antenna has an effective operating temperature of-35 ℃ to 88 ℃.
15. A magnetic pulse transmitting antenna according to any of claims 1 to 4, wherein the ratio of the length of one side of said coil winding portion to the length of the adjacent side is 1.5 to 3.
16. A magnetic pulse transmitting antenna according to any of claims 1 to 4, wherein the material of said transmitting coil is silver, copper, aluminum or an alloy.
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| CN201610438422.6A CN105958206A (en) | 2016-06-17 | 2016-06-17 | Magnetic pulse transmitting antenna |
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| CN201610438422.6A CN105958206A (en) | 2016-06-17 | 2016-06-17 | Magnetic pulse transmitting antenna |
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| CN105958206A true CN105958206A (en) | 2016-09-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107067252A (en) * | 2017-03-15 | 2017-08-18 | 上海易码信息科技有限公司 | SMD mobile payment device and its payment antenna for mobile combination |
| CN107122688A (en) * | 2017-05-23 | 2017-09-01 | 上海易码信息科技有限公司 | A kind of magnetic field impulse conveyer |
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| CN205016016U (en) * | 2015-04-30 | 2016-02-03 | 泰科消防及安全有限公司 | Marker |
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| US7167140B2 (en) * | 2003-07-02 | 2007-01-23 | Nec Tokin Corporation | Coil antenna |
| CN101479886A (en) * | 2006-07-07 | 2009-07-08 | 株式会社村田制作所 | Antenna device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107067252A (en) * | 2017-03-15 | 2017-08-18 | 上海易码信息科技有限公司 | SMD mobile payment device and its payment antenna for mobile combination |
| CN107122688A (en) * | 2017-05-23 | 2017-09-01 | 上海易码信息科技有限公司 | A kind of magnetic field impulse conveyer |
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