CN113283255A - 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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- CN113283255A CN113283255A CN202110536084.0A CN202110536084A CN113283255A CN 113283255 A CN113283255 A CN 113283255A CN 202110536084 A CN202110536084 A CN 202110536084A CN 113283255 A CN113283255 A CN 113283255A
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- 238000004804 winding Methods 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 16
- 239000002184 metal Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- G06K7/10—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)
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
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- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
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- 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 position parallel to the first coil by a plurality of coils to form a second coil, wherein the winding directions of the common edges of the first coil and the second coil are the same, a coil detection step of detecting whether the first coil and/or the second coil reach corresponding preset frequency values or not, if so, the winding is stopped, if not, the number of turns is adjusted, and 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 divided into two central point magnetic fields by the winding method of two coils, so that the card reading capability 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 type induction card is an electromagnetic induction card reading mode which communicates through an electromagnetic wave magnetic field and uses the function code to read and acquire relative information states in a remote device without a contact point. The magnetic lines of force are concentric circles on the same plane and are vertical to the conducting wire. The magnetic field generated also varies with the variation away from the center. This changing magnetic field will induce currents in other loops in its vicinity. Namely, the variable current generated by the wire itself generates a variable magnetic field, and the magnetic field further influences the current in the wire; the effect on other conductors in this electromagnetic field range is called "mutual inductance".
In the prior art, if a coil loop is placed in a magnetic field, when magnetic lines of force pass through the coil loop, current is generated in the coil loop. The 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, metal and the like, and certain influence is generated on the intangible things, so that the functional stability of the equipment is influenced. As shown in FIG. 3, the number of the conventional coils is one, and the card reading test equipment is placed in the middle of the coil, so that the problem of inconsistent magnetic field strength exists in the detection mode, and the card reading effect is poor.
Disclosure of Invention
Technical problem to be solved
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, and solves the problems in the background technology.
(II) technical scheme
In order to achieve the 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 predetermined direction to form a first coil;
a second coil winding step: winding a plurality of turns of the same wire at a position parallel to the first coil to form a second coil, wherein the winding directions of the corresponding common edges of the first coil and the second coil are the same;
a coil detection step: and detecting whether the first coil and/or the second coil reach a 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 sides of the first coil and the second coil are wound in a superposition mode or in a side-by-side mode.
Preferably, the first coil winding step further includes a preparation step before: preparing a table with two wiring grooves on the table top, a cable and a frequency detection tool.
Preferably, the first coil and the second coil are wound for 9-17 turns.
Preferably, a first coil detecting step is further included 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.
A card reading device comprises a first coil and a second coil formed by winding a plurality of coils at a position parallel to the first coil, wherein the winding directions of the first coil and the second coil corresponding to a common edge are the same.
Preferably, the common sides of the first coil and the second coil are arranged in an overlapping manner or arranged side by side.
Preferably, the first coil and the second coil are placed in the wiring grooves corresponding to the tabletop.
Preferably, a through hole is formed in the corresponding table, the second coil surrounds the through hole to be wound, or one side of the second coil is wound tightly to 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) advantageous effects
The invention provides a card reading coil winding method, a card reading device and a card reading system. The method has the following beneficial effects:
(1) the winding method from one circle to two circles enables a central point to be separated into two central point magnetic fields, so that the card reading capability of two local areas is enhanced, the influence effect of metal on card reading is not obvious, the interference is reduced, and the functional stability of the equipment is improved.
(2) The cable through using predetermined material carries out the winding, and the effect is better to the wire winding direction is earlier around the left side or is earlier around the right, and is all feasible, has improved the practicality of wire winding mode, makes staff's wire winding efficiency can promote.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention;
FIG. 2 is a schematic diagram of a desktop configuration of the present invention;
FIG. 3 is a schematic view of a conventional winding tool and a wiring slot;
in the figure: 1. a desktop; 2. a wiring groove; 3. a traditional wiring groove.
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Implementing one step:
referring to fig. 1-2, the present invention provides a technical solution: a card reading coil winding method comprising: the method comprises the steps of preparing tools in sequence, checking whether the tools are intact or not, preparing tools according to needs, wherein the tools have a desktop 1 with the length of 150 x 80cm, wiring grooves 2 must be formed in the desktop 1, the depth of a public boundary groove of each wiring groove 2 is deeper than that of the other positions of the desktop 1, cables and frequency detection tools also need to be prepared, checking whether the desktop 1 is intact or not after the preparation is finished, checking whether impurities are blocked in the wiring grooves 2 or not, and checking whether the cables are broken or not are not, so that the subsequent detection effect and the coil card reading effect are more accurate.
The first coil winding step is to select the prepared wire to perform winding operation from the right along the wiring groove 2 on the desktop 1, perform equidirectional close fitting winding on the cable from the right of the desktop 1 along the wiring groove 2, select the left side to wind firstly or the right side to wind firstly, have no requirement on the winding direction, improve the winding practicability and reduce the possibility of invalid operation.
And a first coil detection step, namely detecting whether the first coil reaches a first preset frequency value, setting the first preset frequency value as the winding number of turns of the first coil to be 9-17 turns, if so, stopping winding, and if not, adjusting the number of turns to prevent the working efficiency of the coil from being influenced by too few or too many winding turns, wherein the card reading effect is optimal when the coil is wound for 9-17 turns through detection.
And a second coil winding step, namely winding a plurality of turns of the same wire at a position parallel to the first coil to form a second coil, wherein the winding directions of the first coil and the second coil corresponding to the common edge are the same. When the right winding is finished and the left winding is started, attention is paid to the fact that the directions of coils at the middle re-attaching position of the two winding coils are required to be consistent, magnetic fields of two coil local areas are offset if the directions of the coils are inconsistent, and the card reading effect is extremely poor or a card can not be read almost. The common sides of the first coil and the second coil are wound in a superposition mode, after one side of the coil is wound, the other side of the coil is superposed on the wound coil. The advantage of the overlapping winding is that the magnetic field can be enhanced to improve the detection effect. The coils wound on two sides are required to be the same cable for winding operation, and the practicability of coil winding is improved through the diversity of winding methods. It should be noted that, when the number of the winding 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 the best.
And a second coil detection step, namely detecting whether the second coil reaches a second preset frequency value, setting the second preset frequency value as the winding number of turns of the second coil to be 9-17 turns, if so, stopping winding, and if not, adjusting the number of turns.
And a winding finishing step, wherein after the winding is finished, the card reading capability of two local areas formed by the wound coil is tested by a testing tool. When the card reading capability is poor, the winding turns are required to be properly adjusted, so that the card reading capability measured by the testing tool is in a good state, and the card reading success rate and the card reading efficiency are ensured.
A card reading device comprises a first coil and a second coil formed by winding a plurality of coils at a position parallel to the first coil, wherein the first coil and the second coil are wound in the same winding direction corresponding to a common edge, the coils are prevented from knotting due to error winding direction, the common edges of the first coil and the second coil are overlapped, the first coil and the second coil are placed in a wiring groove 2 corresponding to a table top 1, through holes are formed in the corresponding table, the second coil surrounds the through holes to be wound, or one edge of the second coil is tightly wound on the edge of the through holes, so that a central point can be separated into two central point magnetic fields through a winding method from one coil to two coils, the card reading capability of two local areas is enhanced, the effect of card reading influence by metal is not obvious, the interference is reduced, and the functional stability of equipment is improved.
A card reading system comprises the card reading device and an RFID card matched with the card reading device, wherein the card reading device can read information of the RFID card to realize information transmission.
The second implementation:
on a one-implementation basis, in the preparation step, the common boundary groove depth of the cabling grooves 2 is wider than elsewhere on the desktop 1. In this embodiment, the winding method is adopted in which the common sides of the first coil and the second coil are wound side by side, and after the coils are wound on one side, the common sides of the coils on the other side are parallel to and spaced from the common sides of the wound coils by 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.
The working principle is as follows: the magnetic force lines are concentric circles on the same plane and are vertical to the leads, the magnetic force lines are from dense to sparse from the center of the circle, the magnetic field is weakened from strong to weak, if the current passing through the leads is fixed and constant, the generated frequency is also constant, namely, direct current, the generated magnetic field is also constant, when the current in a closed loop changes, the magnetic field generated by the current also changes along with the change of the current, if the leads pass through the magnetic field to generate certain frequency, only two circuits with the same frequency can generate resonance, the resonance is also called mutual inductance, the card reading mode also adopts the magnetic field mutual inductance which induces the same frequency in other loops nearby, so that if the mode of outputting the fixed frequency for mutual inductance is adopted to realize the large-range card reading effect, the card reading effect will be worse and worse along with the movement of the center to the edge, if metal is arranged around or under the center, the card reading effect is almost greatly reduced, the winding method of the invention is used for winding the cable from one ring to two rings, namely, a central point is divided into two central point magnetic fields, thus the card reading capability of two local areas is enhanced, even if metal has no obvious influence on the card reading, the interference is reduced, and the functional stability of the equipment is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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 method of winding a card reading coil, comprising:
a first coil winding step: winding a plurality of turns in a predetermined direction to form a first coil;
a second coil winding step: winding a plurality of turns of the same wire at a position parallel to the first coil to form a second coil, wherein the winding directions of the corresponding common edges of the first coil and the second coil are the same;
a coil detection step: and detecting whether the first coil and/or the second coil reach a corresponding preset frequency value, if so, stopping winding, and if not, adjusting the number of turns.
2. The card reading coil winding method of claim 1, wherein in the second coil winding step: the common sides of the first coil and the second coil are wound in a superposition mode or in a side-by-side mode.
3. The card reading coil winding method of claim 1, wherein the first coil winding step is preceded by a preparation step of: preparing a table with two wiring grooves on the table top, a cable and a frequency detection tool.
4. The card reading coil winding method of claim 1, wherein the first coil and the second coil are wound for 9-17 turns.
5. The card reading coil winding method of 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 reading device is 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 position parallel to the first coil, and the winding directions of the first coil and the second coil corresponding to the common edge are the same.
7. The card reading apparatus of claim 6, wherein the common edges of the first coil and the second coil are arranged one above the other or side by side.
8. The card reading device of claim 6, wherein the first coil and the second coil are disposed in corresponding slots of the tabletop.
9. The card reading device of claim 8, wherein a through hole is formed in the desk, the second coil is wound around the through hole, or one side of the second coil is wound tightly against the edge of the through hole.
10. A card reading system comprising a card reading device according to any one of claims 5 to 9, and further comprising an RFID card adapted to the card reading device.
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| 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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| Application Number | Priority Date | Filing Date | Title |
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| 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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| CN113283255A true CN113283255A (en) | 2021-08-20 |
| CN113283255B CN113283255B (en) | 2024-04-02 |
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