CN113283255B - Card reading coil winding method, card reading device and card reading system - Google Patents
Card reading coil winding method, card reading device and card reading system Download PDFInfo
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- CN113283255B CN113283255B CN202110536084.0A CN202110536084A CN113283255B CN 113283255 B CN113283255 B CN 113283255B CN 202110536084 A CN202110536084 A CN 202110536084A CN 113283255 B CN113283255 B CN 113283255B
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- 238000004804 winding Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 17
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10198—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves setting parameters for the interrogator, e.g. programming parameters and operating modes
- G06K7/10227—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves setting parameters for the interrogator, e.g. programming parameters and operating modes loading programming parameters or programs into the interrogator, e.g. for configuring the interrogator
-
- 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
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10297—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Software Systems (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The invention discloses a card reading coil winding method, a card reading device and a card reading system, and relates to the technical field of coils. The method comprises a first coil winding step of winding a plurality of coils in a preset direction to form a first coil, a second coil winding step of winding the same wire in a parallel position with the first coil for a plurality of coils to form a second coil, a coil detection step of detecting whether the first coil and/or the second coil reach a corresponding preset frequency value or not, if so, stopping winding, and if not, adjusting the number of coils, wherein in the second coil winding step, the common edges of the first coil and the second coil are wound in a superposition mode. According to the coil winding method, one central point can be separated into two central point magnetic fields by a winding method of two circles, so that the card reading capacity of two local areas is enhanced, the interference is reduced, and the functional stability of the equipment is improved.
Description
Technical Field
The invention relates to the technical field of coils, in particular to a card reading coil winding method, a card reading device and a card reading system.
Background
The non-contact induction card is an electromagnetic induction card reading mode which uses the function code to read and acquire relative information states in a remote device without contact points through electromagnetic wave magnetic field communication. The magnetic force lines are concentric circles on the same plane and are perpendicular to the conducting wires. The magnetic field generated also varies with the distance from the center. This changing magnetic field will produce an induced current in other loops in its vicinity. Namely, the change current generated by the lead wire generates a change magnetic field, and the magnetic field further influences the current in the lead wire; the effect on other wires in this electromagnetic field range is called "mutual inductance".
In the prior art, if a coil loop is placed in a magnetic field, a current is generated in the coil loop when magnetic lines of force pass through the coil loop. Electromagnetic induction card reading is very important for the application of certain equipment functions, but the intangible things are easily interfered by various external factors, such as walls, metals and the like, and can have certain influence on the intangible things, so that the functional stability of the equipment is affected. As shown in FIG. 3, the number of the conventional coils is one, and the through hole is arranged in the middle part of the conventional coil, so that the card reading test equipment is arranged.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a card reading coil winding method, a card reading device and a card reading system, which solve the problems in the background art.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: a card reading coil winding method comprising:
a first coil winding step: winding a plurality of turns in a preset direction to form a first coil;
a second coil winding step: winding a plurality of coils at the position parallel to the first coil by adopting the same wire to form a second coil, wherein the first coil and the second coil correspond to the same winding direction of the common side;
coil detection: and detecting whether the first coil and/or the second coil reach the corresponding preset frequency value, if so, stopping winding, and if not, adjusting the number of turns.
Preferably, in the second coil winding step: the common edges of the first coil and the second coil are wound in a superimposed manner or in a side-by-side manner.
Preferably, the first coil winding step further includes a preparation step of: a table, a cable and a frequency detection tool with two wiring grooves formed in the table top are prepared.
Preferably, the number of windings of the first coil and the second coil is 9-17.
Preferably, the first coil winding step and the second coil winding step further include a first coil detection step between them: and detecting whether the first coil reaches a first preset frequency value, if so, stopping winding, and if not, adjusting the number of turns.
A card reader comprises a first coil and a second coil formed by winding a plurality of coils at the parallel position of the first coil, wherein the first coil and the second coil have the same winding direction corresponding to a common side.
Preferably, the common sides of the first coil and the second coil are arranged in a superposition manner or arranged side by side.
Preferably, the first coil and the second coil are placed in corresponding wiring grooves of the tabletop.
Preferably, the corresponding table is provided with a through hole, the second coil surrounds the through hole to wind, or one side of the second coil winds tightly against the edge of the through hole.
A card reading system comprises a card reading device and an RFID card matched with the card reading device.
(III) beneficial effects
The invention provides a card reading coil winding method, a card reading device and a card reading system. The beneficial effects are as follows:
(1) By the winding method from one circle to two circles, one center point can be separated into two center point magnetic fields, so that the card reading capacity of two local areas is enhanced, the effect of metal on card reading is not obvious, the interference is reduced, and the functional stability of the equipment is improved.
(2) The wire is coiled through the cable made of the preset material, the effect is better, the wire winding direction is firstly coiled on the left side or firstly coiled on the right side, the practicality of the wire winding mode is improved, and the wire winding efficiency of workers can be improved.
Drawings
FIG. 1 is a schematic flow chart of the method of the present invention;
FIG. 2 is a schematic view of a desktop according to the present invention;
FIG. 3 is a schematic diagram of a conventional winding tool and a wiring groove;
in the figure: 1. a tabletop; 2. wiring grooves; 3. conventional wiring slots.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Implementing the following steps:
referring to fig. 1-2, the present invention provides a technical solution: a card reading coil winding method comprising: the preparation step, prepare the tool completely and check whether intact, prepare the tool according to needs have a 150 x 80cm desk-top 1 and must offer the trough 2 on the desk-top 1, the public boundary trough depth of trough 2 is deeper than other places of desk-top 1, still need prepare cable and frequency detection tool at the same time, still need check after the preparation whether desk-top 1 is intact, whether there is not impurity to block up in the trough 2, whether the cable is not broken, make subsequent detection effect and coil read card effect more accurate.
And in the first coil winding step, the prepared wire is selected to be wound from the right along the wiring groove 2 on the desktop 1, the cable is wound in a same direction and close fit along the wiring groove 2 from the right side of the desktop 1, the winding is selected to be wound left or right first, no requirement is required for the winding direction, the winding practicability is improved, and the possibility of invalid operation is reduced.
And a first coil detection step, namely detecting whether the first coil reaches a first preset frequency value, wherein the first preset frequency value is set to 9-17 turns of the first coil, if yes, stopping winding, otherwise, adjusting the turns to prevent the work efficiency of the coil from being influenced by too few or too much turns, and detecting that the card reading effect is optimal when the coil is wound to 9-17 turns.
And a second coil winding step, wherein the same wire is adopted, a plurality of coils are wound at the position parallel to the first coil to form a second coil, and the winding directions of the first coil and the second coil corresponding to the common edge are the same. When the right coil winding is finished and the left coil winding is started, the trend of the coil at the middle re-pasting position of the two coils needs to be consistent, if the coil trend is inconsistent, local magnetic field offset of the two coils can occur, and the card reading effect is extremely poor or the situation that the card is hardly read occurs. The common side of the first coil and the second coil is wound in a superposition mode, after one side of the coil is wound, the coil on the other side is superposed on the wound coil. The advantage of superposition winding is that the magnetic field can be enhanced to improve the detection effect. The coils wound on two sides are required to be wound on the same cable, and the practicability of winding the coils is improved through the diversity of winding methods. It should be noted that, when the number of coils is three or more, the card reading effect is affected, so that the card reading test is performed by winding two coils, and the effect is optimal.
And a second coil detection step, namely detecting whether the second coil reaches a second preset frequency value, wherein the second preset frequency value is set to be 9-17 times of the winding number of the second coil, if so, stopping winding, and if not, adjusting the number of times.
And (3) after the winding is finished, testing the card reading capacity of two local areas formed by the wound coil through a testing tool. When the card reading capability is poor, the winding number of turns needs to be properly adjusted, so that the card reading capability measured by the testing tool is in a good state, and the success rate of card reading and the card reading efficiency are ensured.
The utility model provides a card reader, including the card reader be equipped with first coil and with the parallel position winding multiturn of first coil form the second coil, the winding of first coil and second coil correspond the common limit to the same, prevent that the winding direction from making mistakes from causing the coil to tie a knot, the common limit stack setting of first coil and second coil, first coil and second coil are placed in the wiring groove 2 that desktop 1 corresponds, the through-hole has been seted up on corresponding desk, the second coil surrounds the through-hole and winds, perhaps the through-hole edge is hugged closely on one side of second coil and winds, through a round to two round winding methods like this, make can separate into two central point magnetic fields with a central point, two local card reading ability have been strengthened like this, it is less obvious to read the card effect just to have the metal to have alleviateed the interference, functional stability of equipment has been improved.
The card reading system comprises the card reading device and the RFID card matched with the card reading device, wherein the card reading device can read information of the RFID card, and information transmission is realized.
And II, implementation:
on an implementation-by-implementation basis, in the preparation step, the common boundary trench depth of the wiring trench 2 is wider than elsewhere in the table top 1. In this embodiment, the winding method is that the common side of the first coil and the second coil is wound in a side-by-side manner, and after the coils are wound, the common side of the coil on the other side is parallel to the common side of the wound coil and keeps a certain distance. This has the advantage of a larger detection range. In this embodiment, the common sides of the first coil and the second coil of the card reading device are arranged side by side.
Working principle: the magnetic force lines are concentric circles on the same plane and are perpendicular to the wires, the magnetic force lines are dense to sparse from the center of the circle, the magnetic field is weakened from strong to weak, if the current passing through the wires is fixed, the generated frequency is unchanged, namely direct current, the generated magnetic field is constant, when the current in a closed loop is changed, the magnetic field generated by the current is changed along with the change of the current, if the wires pass through the magnetic field to generate a certain frequency, only two same-frequency magnetic fields can generate resonance, the resonance is also called mutual inductance, the card reading mode also adopts the mode that the other loops nearby the wires generate the magnetic field mutual inductance which induces the same frequency, so that the mode of fixing the frequency output carries out the mutual inductance is that the card reading effect is realized in a large range, the card reading effect is worse along with the movement of the center to the edge, and if the surrounding or underlying metal is added, the card reading effect is almost greatly discounted, and by the winding method of the invention, the winding method of the cable from one loop to two loops separates a center point into two center point magnetic fields, thus the card reading capability of two domains is enhanced, the metal is obviously influenced, the card reading effect is not interfered, and the card reading effect is obviously has the effect on the card reading device.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A card reading coil winding method, comprising:
a first coil winding step: winding a plurality of turns in a preset direction to form a first coil;
a second coil winding step: winding a plurality of coils at the position parallel to the first coil by adopting the same wire to form a second coil, wherein the first coil and the second coil correspond to the same winding direction of the common side; by winding one circle to two circles, a center point can be separated into two center point magnetic fields;
coil detection: and detecting whether the first coil and/or the second coil reach the corresponding preset frequency value, if so, stopping winding, and if not, adjusting the number of turns.
2. The card reading coil winding method according to claim 1, wherein in the second coil winding step: the common edges of the first coil and the second coil are wound in a superimposed manner or in a side-by-side manner.
3. The card reading coil winding method according to claim 1, wherein the first coil winding step is preceded by a preparation step of: a table, a cable and a frequency detection tool with two wiring grooves formed in the table top are prepared.
4. The card reading coil winding method according to claim 1, wherein the number of windings of the first coil and the second coil is 9 to 17.
5. The card reading coil winding method according to claim 1, further comprising a first coil detecting step between the first coil winding step and the second coil winding step: and detecting whether the first coil reaches a first preset frequency value, if so, stopping winding, and if not, adjusting the number of turns.
6. A card reader device employing the card reading coil winding method of any one of claims 1 to 5, characterized in that: the card reading device is provided with a first coil and a second coil formed by winding a plurality of coils at the parallel position of the first coil, wherein the first coil and the second coil have the same winding direction corresponding to the common edge.
7. The card reader device of claim 6 wherein the common edge of the first coil and the second coil are stacked or side-by-side.
8. The card reader of claim 6 wherein the first coil and the second coil are disposed in corresponding wiring slots in the desktop.
9. The card reader of claim 8 wherein the corresponding table is provided with a through hole, and the second coil is wrapped around the through hole or one side of the second coil is wrapped against the edge of the through hole.
10. A card reading system comprising a card reading device according to any one of claims 6-9, and further comprising an RFID card mated with the card reading device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110536084.0A CN113283255B (en) | 2021-05-17 | 2021-05-17 | Card reading coil winding method, card reading device and card reading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110536084.0A CN113283255B (en) | 2021-05-17 | 2021-05-17 | Card reading coil winding method, card reading device and card reading system |
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| Publication Number | Publication Date |
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| CN113283255A CN113283255A (en) | 2021-08-20 |
| CN113283255B true CN113283255B (en) | 2024-04-02 |
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