CN219997618U - Common mode noise suppression sensor and banknote validator - Google Patents
Common mode noise suppression sensor and banknote validator Download PDFInfo
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- CN219997618U CN219997618U CN202320889094.7U CN202320889094U CN219997618U CN 219997618 U CN219997618 U CN 219997618U CN 202320889094 U CN202320889094 U CN 202320889094U CN 219997618 U CN219997618 U CN 219997618U
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- 230000001629 suppression Effects 0.000 title claims abstract description 52
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 229910000889 permalloy Inorganic materials 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 10
- 230000035945 sensitivity Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of magnetic detection and identification, and provides a common mode noise suppression sensor and a banknote validator, wherein the common mode noise suppression sensor comprises: shell, two magnets and two magnetic assembly, two magnetic assembly along length direction symmetric distribution in the mounting groove, magnetic assembly includes: the coil is wound on the periphery of the coil frame by taking the width direction as an axis, two ends of the coil are respectively connected with the two pins, and the two pins are protruded out of the bottom surface of the shell; the gap piece and the two magnetic cores are C-shaped, the openings are opposite, the bottom ends of the two magnetic cores are inserted into the connecting holes, the end faces of the two magnetic cores are propped against each other, and the top ends of the two magnetic cores are respectively arranged on two sides of the gap piece. The two magnetic components form two groups of magnetic anti-counterfeiting signal reading magnetic loops, so that the two groups of coils can form heteropolarity combination and differential output, the common mode noise suppression sensor can suppress interference in a common mode, and the signal to noise ratio is improved.
Description
Technical Field
The utility model relates to the technical field of magnetic detection and identification, in particular to a common mode noise suppression sensor and a banknote validator.
Background
At present, paper money circulated at home and abroad is as follows: soft and hard magnetic anti-counterfeiting characteristic information (such as metal safety lines or magnetic ink) is arranged on paper currency such as Euro, RMB, dollar and the like. When the banknote identifier works, the magnetic anti-counterfeiting characteristic information recorded on the banknote is read through the magnetic head assembled by the banknote identifier, amplified by the circuit and sent to a Central Processing Unit (CPU) of the banknote identifier for processing, and the built-in software of the CPU judges the authenticity and denomination of the banknote identifier according to the parameters such as the pulse width, the frequency, the interval and the like of the read pulse waveform. In the conventional coil type small-sized magnetic head, only one set of magnetic anti-counterfeiting signal reading magnetic loop is provided, and when the anti-counterfeiting recognition process of paper money is performed by adopting the set of reading magnetic loop, the reading magnetic loop is easy to be subjected to electromagnetic interference, for example: interference (power frequency current generates power frequency magnetic field) and radio frequency interference (radio frequency interference sources such as radio station, television station, mobile phone and the like) in the operation of the electrical equipment lead the sensitivity of reading the soft and hard magnetic anti-counterfeiting characteristic information by the magnetic reading loop to be reduced, so that the problems of poor anti-interference and low signal to noise ratio exist.
Accordingly, the prior art has drawbacks and needs to be improved and developed.
Disclosure of Invention
In view of the shortcomings of the prior art, the utility model aims to provide a common mode noise suppression sensor and a banknote validator, which aim to solve the problems of poor anti-interference and low signal to noise ratio existing in the traditional coil type small-sized magnetic head that only one group of magnetic anti-counterfeiting signal reading magnetic loops exist.
The utility model solves the technical problems by adopting a technical scheme as follows: a common mode noise suppression sensor for a banknote validator comprising:
the shell is provided with a mounting groove on the bottom surface, and a working hole is formed in the top surface of the shell and communicated with the mounting groove;
the two magnets are embedded in the top surface of the shell and distributed on two sides of the working hole in the width direction, and the top ends of the two magnets are flush with the top surface of the shell;
the two magnetic components, two the magnetic components along length direction symmetric distribution in the mounting groove, the magnetic components includes:
the coil is wound on the periphery of the wire frame by taking the width direction as an axis, two ends of the coil are respectively connected with two pins, and the two pins are protruded out of the bottom surface of the shell;
the gap piece and the two magnetic cores are C-shaped, the openings of the two magnetic cores are opposite, the bottom ends of the two magnetic cores are inserted into the connecting hole, the end faces of the two magnetic cores are abutted, and the top ends of the two magnetic cores are respectively arranged on two sides of the gap piece;
the top end of the magnetic core and the top end of the gap piece are both positioned in the working hole and are both flush with the top surface of the shell.
Optionally, the common mode noise suppression sensor further includes:
the support, the support set up in the mounting groove, and connect the inner wall of mounting groove, the support has the shoulder hole that runs through bottom and top setting, four the magnetic core all is located in the shoulder hole, and all with the inner wall connection of shoulder hole, four the top of magnetic core all protrudes the shoulder hole, four the bottom of pin all protrudes the shoulder hole.
Optionally, a resin is filled between the support and the inner wall of the mounting groove.
Optionally, a resin is filled between the magnetic component and the inner wall of the stepped hole.
Optionally, the common mode noise suppression sensor further includes:
the installation foot, the installation foot set up in on the periphery of shell, just the bottom protrusion of installation foot the shell.
Optionally, four mounting feet are provided, and the four mounting feet are symmetrically distributed on the periphery of the shell.
Optionally, both the magnets extend along a length direction, and the length ranges of both the magnets cover the top ends of both the magnetic assemblies.
Optionally, the magnetic core is an integrally formed permalloy magnetic core.
The utility model solves the technical problem by adopting another technical scheme as follows: the banknote validator comprises the common mode noise suppression sensor, wherein two magnetic components in the common mode noise suppression sensor are used for forming a differential output circuit.
Compared with the prior art, the utility model provides the common mode noise suppression sensor and the banknote validator, wherein the common mode noise suppression sensor is applied to the banknote validator for recognizing and detecting the false banknotes such as Euro, RMB, dollars and the like, and is provided with two magnetic components, the two magnetic components form two sets of magnetic false-proof signal reading magnetic loops, so that the two sets of coils can form heteropolarity combination, and differential output is realized, so that the common mode noise suppression sensor can suppress interference in a common mode, and the signal to noise ratio is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a common mode noise suppression sensor provided in the present utility model;
FIG. 2 is a schematic cross-sectional view of another view of the common mode noise suppression sensor provided in the present utility model;
FIG. 3 is a schematic top view of a common mode noise suppression sensor provided in the present utility model;
reference numerals illustrate:
10. a common mode noise suppression sensor; 11. a housing; 12. a magnet; 13. a magnetic assembly; 14. a support; 15. a mounting foot; 111. a mounting groove; 112. a working hole; 131. a wire frame; 132. a coil; 133. pins; 134. a gap piece; 135. a magnetic core; 1311. a connection hole; 141. a stepped hole.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The utility model provides a common mode noise suppression sensor and a banknote validator based on the traditional coil type small magnetic head, wherein only one group of magnetic anti-counterfeiting signal reading magnetic loops exist, and the problems of poor anti-interference and low signal to noise ratio exist; reference is made in detail to the examples below.
Referring to fig. 1, 2 and 3 in combination, a first embodiment of the present utility model provides a common mode noise suppression sensor 10 for a banknote validator, comprising a housing 11, two magnets 12 and two magnetic assemblies 13; a mounting groove 111 is formed in the bottom surface of the shell 11, a working hole 112 is formed in the top surface of the shell 11, and the working hole 112 is communicated with the mounting groove 111; the two magnets 12 are embedded in the top surface of the housing 11 and distributed on two sides of the working hole 112 along the width direction, and the top ends of the two magnets 12 are flush with the top surface of the housing 11; the two magnetic assemblies 13 are symmetrically distributed in the mounting groove 111 along the length direction, and the magnetic assemblies 13 comprise a wire frame 131, a coil 132, two pins 133, a gap piece 134 and two magnetic cores 135; the wire frame 131 has a connection hole 1311 penetrating in the width direction, the coil 132 is wound around the outer periphery of the wire frame 131 with the width direction as an axis, two ends of the coil 132 are respectively connected with two pins 133, and the two pins 133 protrude from the bottom surface of the housing 11; the two magnetic cores 135 are C-shaped, the openings are opposite, the bottom ends of the two magnetic cores 135 are inserted into the connecting holes 1311, the end faces are abutted, and the top ends of the two magnetic cores 135 are respectively arranged at two sides of the gap piece 134; the top end of the core 135 and the top end of the gap piece 134 are both located in the working hole 112 and are both flush with the top surface of the housing 11.
It can be understood that in the banknote anti-counterfeiting recognition detection technology, only one group of magnetic anti-counterfeiting signal reading magnetic loops exist in the traditional coil type small magnetic head, so that the problems of poor anti-interference and low signal to noise ratio exist;
specifically, the housing 11 is used for mounting two magnets 12 and a magnetic component 13, a working hole 112 is formed in the top surface of the housing 11, a mounting groove 111 is formed in the bottom surface of the housing 11, and the mounting groove 111 is communicated with the working hole 112; the top surface of the shell 11 is provided with an arc surface, so that the smooth guiding effect is realized, the paper money can slide along the arc surface, and anti-counterfeiting identification detection can be performed; the two magnetic components 13 are symmetrically distributed in the mounting groove 111 along the length direction, the top ends of the two magnetic components 13 protrude into the working hole 112, and the top ends of the two magnetic components 13 are flush with the top surface of the shell 11 so as to form full contact with soft and hard magnetic anti-counterfeiting characteristic information on paper money, so that anti-counterfeiting identification detection is performed, the sensitivity of anti-counterfeiting identification is improved, and meanwhile, the range of paper money reading breadth is increased; the two magnets 12 are embedded on the top surface of the shell 11 and respectively extend along the length direction at two sides of the working hole 112 along the width direction, and are distributed at two sides of the top ends of the two magnetic assemblies 13; the top ends of the two magnets 12 are flush with the top surface of the shell 11 and are used for magnetizing soft and hard magnetic anti-counterfeiting characteristic information on paper money so as to facilitate the magnetic assembly 13 to read the soft and hard magnetic anti-counterfeiting characteristic information and obtain a magnetic anti-counterfeiting signal; the magnet 12 can be a neodymium iron boron strong magnet so as to improve the magnetizing effect on soft and hard magnetic anti-counterfeiting characteristic information, and further effectively ensure the sensitivity of anti-counterfeiting identification; each magnetic assembly 13 comprises a bobbin 131, a coil 132, two pins 133, a gap piece 134 and two cores 135; a wire winding groove is formed in the periphery of the wire frame 131, the wire winding groove is arranged around the axis of the wire frame 131 along the width direction, the coil 132 is wound in the wire winding groove, and two ends of the coil 132 are respectively connected with two pins 133; the wire frame 131 is further provided with a connecting hole 1311 penetrating in the width direction, wherein the wire winding groove is arranged around the connecting hole 1311, that is, the coil 132 is arranged around the axis of the connecting hole 1311; the two magnetic cores 135 are C-shaped, the openings are opposite, the bottom ends of the two magnetic cores 135 are inserted into the connecting hole 1311, and the end faces are abutted against each other, so that the coil 132 surrounds the bottom ends of the two magnetic cores 135; the top ends of the two magnetic cores 135 are separated by a gap piece 134, and two sides of the gap piece 134 are respectively connected with the two magnetic cores 135; by arranging the gap piece 134, the two magnetic cores 135 and one coil 132 form a single gap single magnetic circuit structure, so that the anti-counterfeiting information in paper money is prevented from being read twice, the output signals are prevented from being overlapped, and distortion during the paper money anti-counterfeiting information reading is further prevented; the top ends of the two magnetic cores 135 and the top ends of the gap pieces 134 form working ends, and the working ends protrude into the working holes 112 and are flush with the top surface of the shell 11, so as to read the soft and hard magnetic anti-counterfeiting characteristic information on paper money and obtain anti-counterfeiting characteristic signals; because the top ends of the magnets 12, the magnetic cores 135 and the gap pieces 134 are flush with the top surface of the shell 11, the paper currency contacts with the magnets 12, the magnetic cores 135 and the gap pieces 134 in the process of moving along the top surface of the shell 11, thereby being beneficial to improving the sensitivity of anti-counterfeiting recognition and reducing the distortion of signals; because the common mode noise suppression sensor 10 adopts two magnetic components 13, the two magnetic components 13 form two magnetic structures to read soft and hard magnetic anti-counterfeiting characteristic information on paper money, and the two coils 132 are connected to an electric port of the paper money detector in a heteropolarity combination mode through four pins 133 and output in a differential mode, the common mode noise suppression sensor 10 can suppress interference in a common mode, and the signal to noise ratio is improved;
in the working process of the common mode noise suppression sensor 10, paper money moves on the top surface of the shell 11 along the width direction, soft and hard magnetic anti-counterfeiting characteristic information on the paper money is magnetized and magnetized by the magnet 12 when passing through the magnet 12, the magnetized soft and hard magnetic anti-counterfeiting characteristic information passes through the magnetic component 13, the magnetic line of force cuts the coil 132 to generate electromotive force, the magnetic component 13 reads anti-counterfeiting characteristic signals recorded by the soft and hard magnetic anti-counterfeiting characteristic information and outputs the anti-counterfeiting characteristic signals through the four pins 133, so that anti-counterfeiting recognition of the paper money is realized, and the common mode noise suppression sensor 10 can suppress interference in a common mode and improve signal to noise ratio due to the heteropolarity combination and differential output of the two coils 132.
In some embodiments, the core 135 is an integrally formed permalloy core 135.
It can be appreciated that permalloy has very high magnetic permeability of weak magnetic field, and the permalloy magnetic core 135 is adopted, so that the sensitivity of anti-counterfeiting identification is improved, and the distortion of signals is reduced.
With continued reference to fig. 1 and fig. 2, in some embodiments, the common mode noise suppression sensor 10 further includes a support 14, the support 14 is disposed in the mounting groove 111 and is connected to an inner wall of the mounting groove 111, the support 14 has a stepped hole 141 penetrating through a bottom end and a top end, four magnetic cores 135 are all disposed in the stepped hole 141 and are all connected to an inner wall of the stepped hole 141, top ends of the four magnetic cores 135 are all protruded out of the stepped hole 141, and bottom ends of the four pins 133 are all protruded out of the stepped hole 141.
It can be appreciated that the support 14 is used to house and fix the two magnetic assemblies 13, so as to enhance the structural stability of the common mode noise suppression sensor 10 and improve the service life; the top end shape of the stepped hole 141 is arranged corresponding to the magnetic cores 135, so that one side of the two magnetic cores 135 opposite to each other is attached to the inner wall of the stepped hole 141, thereby being beneficial to enhancing the stability of the structure; the bottom ends of the four pins 133 are protruded into the stepped holes 141 and correspondingly connected with the electric port of the banknote validator, so that the two coils 132 form differential output, interference can be restrained by a common mode, and the signal to noise ratio is improved.
In some embodiments, a resin is filled between the support 14 and the inner wall of the mounting groove 111.
It can be understood that the gap between the support 14 and the housing 11 is filled with resin for fixing, which is favorable for enhancing the firmness of the overall structure, and for conveniently adjusting the installation position of the support 14 in the installation groove 111, i.e. for conveniently adjusting the positions of the magnet 12 and the magnetic component 13 relative to the top surface of the shielding shell, which is favorable for guaranteeing the sensitivity of anti-counterfeiting identification detection of the common mode noise suppression sensor 10.
In some embodiments, a resin is filled between the magnetic component 13 and the inner wall of the stepped hole 141.
It will be appreciated that the gap between the magnetic assembly 13 and the support 14 is filled with resin for fixing, which is beneficial to enhancing the firmness of the overall structure.
With continued reference to fig. 1, 2 and 3, in some embodiments, the common mode noise suppression sensor 10 further includes a mounting leg 15, the mounting leg 15 is disposed on the outer periphery of the housing 11, and a bottom end of the mounting leg 15 protrudes from the housing 11.
It can be appreciated that the common mode noise suppression sensor 10 is fixed on the banknote validator by the mounting leg 15, which improves the convenience of mounting the common mode noise suppression sensor 10.
With continued reference to fig. 1, 2 and 3, in some embodiments, four mounting feet 15 are provided, and four mounting feet 15 are symmetrically disposed on the outer periphery of the housing 11.
It can be appreciated that by providing four mounting feet 15, the mounting reliability of the common mode noise suppression sensor 10 on the banknote validator is enhanced; it is also possible to provide only two mounting feet 15, the two mounting feet 15 being symmetrically distributed on both sides of the housing 11.
With continued reference to fig. 3, in some embodiments, both magnets 12 extend in a longitudinal direction, with the length of both magnets 12 covering the top ends of both magnetic assemblies 13.
It can be understood that the extending directions of the two magnets 12 are the same as the extending directions of the top ends of the magnetic components 13, and the paper money moves on the common mode noise suppression sensor 10 along the width direction along the length direction, and is perpendicular to the magnets 12 and the magnetic components 13, so that the reading width of the common mode noise suppression sensor 10 is improved, and the paper money anti-counterfeiting recognition detection of more types is compatible; the length range of the magnet 12 covers the top end of the magnetic component 13, so that the magnetizing effect of the magnet 12 on soft and hard magnetic anti-counterfeiting characteristic information is effectively ensured, and the magnetic component 13 is further ensured to read the magnetic characteristic signals, so that anti-counterfeiting identification detection is realized; specifically, the effective reading width formed by the two magnetic assemblies 13 is 10mm, the length of the magnet 12 is 12.6mm, and the effective reading width is increased to 10mm from 5mm of a traditional coil type small-sized magnetic head, so that the range of reading paper money is increased; the common mode noise suppression sensor 10 has the following dimensions: 14.8mm long, 8.5mm wide and 13.8mm high.
In a second embodiment of the utility model, a banknote validator is provided, comprising a common mode noise suppressing sensor 10 as described above, wherein two magnetic components 13 in the common mode noise suppressing sensor 10 are used to form a differential output circuit.
It can be understood that the common mode noise suppression sensor 10 is adopted in the banknote validator provided by the utility model to read soft and hard magnetic anti-counterfeiting characteristic information on the banknote to obtain a magnetic anti-counterfeiting signal so as to realize anti-counterfeiting recognition, and as the two magnetic components 13 in the common mode noise suppression sensor 10 form a differential output circuit, namely the two coils 132 in the two magnetic components 13 form a heteropolarity combination, differential output is realized, the common mode noise suppression sensor 10 can suppress interference in a common mode, and the signal to noise ratio is improved, so that the banknote validator is beneficial to improving the accuracy and the sensitivity of the banknote anti-counterfeiting recognition detection.
In summary, the present utility model provides a common mode noise suppression sensor and a banknote validator, where the common mode noise suppression sensor includes: the shell is provided with a mounting groove on the bottom surface, and a working hole is formed in the top surface of the shell and communicated with the mounting groove; the two magnets are embedded in the top surface of the shell and distributed on two sides of the working hole in the width direction, and the top ends of the two magnets are flush with the top surface of the shell; two magnetic component, two magnetic component along length direction symmetric distribution in the mounting groove, magnetic component includes: the coil is wound on the periphery of the coil frame by taking the width direction as an axis, two ends of the coil are respectively connected with the two pins, and the two pins are protruded out of the bottom surface of the shell; the two magnetic cores are C-shaped, the openings are arranged oppositely, the bottom ends of the two magnetic cores are inserted into the connecting holes, the end faces of the two magnetic cores are abutted against each other, and the top ends of the two magnetic cores are respectively arranged on two sides of the gap piece; the top end of the magnetic core and the top end of the gap piece are both positioned in the working hole and are both flush with the top surface of the shell. The common mode noise suppression sensor is applied to anti-counterfeiting recognition detection of paper money such as Euro, RMB, dollars and the like in the currency detector, and is provided with two magnetic components, wherein the two magnetic components form two groups of magnetic anti-counterfeiting signal reading magnetic loops, so that two groups of coils can form heteropolarity combination and differential output, the common mode noise suppression sensor can realize common mode interference suppression, and the signal to noise ratio is improved.
It is to be understood that the utility model is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (9)
1. A common mode noise suppression sensor for a banknote validator comprising:
the shell is provided with a mounting groove on the bottom surface, and a working hole is formed in the top surface of the shell and communicated with the mounting groove;
the two magnets are embedded in the top surface of the shell and distributed on two sides of the working hole in the width direction, and the top ends of the two magnets are flush with the top surface of the shell;
the two magnetic components, two the magnetic components along length direction symmetric distribution in the mounting groove, the magnetic components includes:
the coil is wound on the periphery of the wire frame by taking the width direction as an axis, two ends of the coil are respectively connected with two pins, and the two pins are protruded out of the bottom surface of the shell;
the gap piece and the two magnetic cores are C-shaped, the openings of the two magnetic cores are opposite, the bottom ends of the two magnetic cores are inserted into the connecting hole, the end faces of the two magnetic cores are abutted, and the top ends of the two magnetic cores are respectively arranged on two sides of the gap piece;
the top end of the magnetic core and the top end of the gap piece are both positioned in the working hole and are both flush with the top surface of the shell.
2. The common mode noise suppression sensor according to claim 1, further comprising:
the support, the support set up in the mounting groove, and connect the inner wall of mounting groove, the support has the shoulder hole that runs through bottom and top setting, four the magnetic core all is located in the shoulder hole, and all with the inner wall connection of shoulder hole, four the top of magnetic core all protrudes the shoulder hole, four the bottom of pin all protrudes the shoulder hole.
3. The common mode noise suppressing sensor according to claim 2, wherein a resin is filled between the mount and an inner wall of the mounting groove.
4. The common mode noise suppression sensor according to claim 2, wherein a resin is filled between the magnetic component and an inner wall of the stepped hole.
5. The common mode noise suppression sensor according to claim 1, further comprising:
the installation foot, the installation foot set up in on the periphery of shell, just the bottom protrusion of installation foot the shell.
6. The common mode noise suppression sensor according to claim 5, wherein four of said mounting feet are provided, and four of said mounting feet are symmetrically distributed on the outer periphery of said housing.
7. A common mode noise suppression sensor according to claim 1, wherein both of said magnets extend in a length direction, and wherein the length ranges of both of said magnets cover the tips of both of said magnetic assemblies.
8. The common mode noise suppression sensor according to claim 1, wherein the magnetic core is an integrally formed permalloy magnetic core.
9. A banknote validator comprising a common mode noise suppression sensor as claimed in any one of claims 1 to 8, wherein two magnetic components of the common mode noise suppression sensor are used to form a differential output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320889094.7U CN219997618U (en) | 2023-04-18 | 2023-04-18 | Common mode noise suppression sensor and banknote validator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320889094.7U CN219997618U (en) | 2023-04-18 | 2023-04-18 | Common mode noise suppression sensor and banknote validator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219997618U true CN219997618U (en) | 2023-11-10 |
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| CN202320889094.7U Active CN219997618U (en) | 2023-04-18 | 2023-04-18 | Common mode noise suppression sensor and banknote validator |
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| Country | Link |
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| CN (1) | CN219997618U (en) |
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