CN112612062A - Gold detection machine and gold detection machine transmitting module - Google Patents
Gold detection machine and gold detection machine transmitting module Download PDFInfo
- Publication number
- CN112612062A CN112612062A CN202011633822.5A CN202011633822A CN112612062A CN 112612062 A CN112612062 A CN 112612062A CN 202011633822 A CN202011633822 A CN 202011633822A CN 112612062 A CN112612062 A CN 112612062A
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- shielding
- secondary coil
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000010931 gold Substances 0.000 title claims abstract description 49
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 49
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 238000004804 winding Methods 0.000 claims description 33
- 239000002184 metal Substances 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 11
- 238000007689 inspection Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 230000005672 electromagnetic field Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention relates to a gold detection machine and a gold detection machine transmitting module, wherein the gold detection machine comprises a first driving circuit, a transmitting coil, a first receiving coil and a second receiving coil, the gold detection machine further comprises a first shielding coil and a second shielding coil, the first receiving coil, the transmitting coil, the second receiving coil and the second shielding coil are sequentially arranged, the transmitting coil, the first shielding coil and the second shielding coil are all connected to the first driving circuit, the current directions in the first shielding coil and the second shielding coil are the same and are opposite to the current direction in the transmitting coil, and the current direction is clockwise or anticlockwise. Compared with the prior art, the gold inspection machine production line has the advantages that the two shielding coils are designed and are respectively positioned outside the two receiving coils, and the directions of the magnetic fields of the two shielding coils are opposite to the direction of the magnetic field of the transmitting coil, so that the magnetic field of the transmitting coil can be offset, the metal area is reduced, the miniaturization is facilitated, and the layout of the gold inspection machine production line is more compact.
Description
Technical Field
The invention relates to a metal detector, in particular to a gold detector and a transmitting module of the gold detector.
Background
When the metal detector works, the driving circuit drives the transmitting coil to generate a stable electromagnetic field when a product passes through the window, the receiving coil is used for detecting the change condition of the electromagnetic field, when an object passes through the region, the distribution of the electromagnetic field is changed due to the influence of the magnetic permeability and the electric conductivity of the object, and the change can be used as a judgment basis for judging whether metal foreign bodies exist or not after being detected by the receiving coil and processed by a subsequent circuit.
Generally, in order to improve the detection sensitivity of a machine, the driving power and the frequency are appropriately increased, but in some narrow scenes, the metal detector is very close to an exclusion device or other machines, so that an interference signal is generated, and finally, the operation state of the metal detector is unstable or a false alarm state is caused.
Disclosure of Invention
The inventor of the application finds that the magnetic field generated by the transmitting coil cannot be completely sealed in the product passing window, and a magnetic field with strong magnetic field intensity still exists around the product passing window, so that the magnetic field can be interfered by objects around the probe or space electromagnetic interference to generate an unstable running state or a false alarm state of the machine, and the use of the machine is seriously influenced. The inventors refer to the area outside the product passage window that is still disturbed by metal movement as the metal zone. The size of the metal area restricts the miniaturization of the gold detection machine and the layout of a production line of the gold detection machine. The invention aims to provide a gold detection machine and a gold detection machine transmitting module.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a machine is examined to gold, includes first drive circuit, transmitting coil and first receiving coil, second receiving coil, the machine is examined to gold still includes first shield coil and second shield coil, first receiving coil, transmitting coil, second receiving coil and second shield coil are arranged in proper order, transmitting coil, first shield coil and second shield coil all are connected to first drive circuit, and the direction of current in first shield coil and the second shield coil is the same to all opposite with the direction of current in the transmitting coil, wherein, the direction of current is clockwise or anticlockwise.
The first driving circuit comprises a main circuit and a transmitting transformer, the transmitting transformer comprises a primary coil, a first secondary coil, a second secondary coil and a third secondary coil, the first secondary coil, the second secondary coil and the third secondary coil are connected, the second secondary coil is connected with the transmitting coil, the first secondary coil is connected with a first shielding coil, the third secondary coil is connected with a second shielding coil, the winding directions of the first secondary coil and the third secondary coil are the same and are opposite to the winding direction of the second secondary coil, and the winding directions of the first shielding coil, the primary coil and the second shielding coil are the same.
The first driving circuit comprises a main circuit and a transmitting transformer, the transmitting transformer comprises a primary coil, a first secondary coil, a second secondary coil and a third secondary coil, the first secondary coil, the second secondary coil and the third secondary coil are connected, the second secondary coil is connected with the transmitting coil, the first secondary coil is connected with a first shielding coil, the third secondary coil is connected with a second shielding coil, the winding directions of the first secondary coil, the second secondary coil and the third secondary coil are the same, and the winding directions of the first shielding coil and the second shielding coil are opposite to the winding direction of the primary coil.
The first secondary coil and the third secondary coil have the same number of turns and are smaller than the number of turns of the second secondary coil.
The utility model provides a machine transmitting module is examined to gold, includes first drive circuit, transmitting coil, first shield coil and second shield coil, first shield coil, transmitting coil and second shield coil arrange in proper order, transmitting coil, first shield coil and second shield coil all are connected to first drive circuit, and the current direction in first shield coil and the second shield coil is the same to all opposite with the current direction in the transmitting coil, wherein, the current direction is clockwise or anticlockwise.
The first driving circuit comprises a main circuit and a transmitting transformer, the transmitting transformer comprises a primary coil, a first secondary coil, a second secondary coil and a third secondary coil, the first secondary coil, the second secondary coil and the third secondary coil are connected, the second secondary coil is connected with the transmitting coil, the first secondary coil is connected with a first shielding coil, the third secondary coil is connected with a second shielding coil, the winding directions of the first secondary coil and the third secondary coil are the same and are opposite to the winding direction of the second secondary coil, and the winding directions of the first shielding coil, the primary coil and the second shielding coil are the same.
The first driving circuit comprises a main circuit and a transmitting transformer, the transmitting transformer comprises a primary coil, a first secondary coil, a second secondary coil and a third secondary coil, the first secondary coil, the second secondary coil and the third secondary coil are connected, the second secondary coil is connected with the transmitting coil, the first secondary coil is connected with a first shielding coil, the third secondary coil is connected with a second shielding coil, the winding directions of the first secondary coil, the second secondary coil and the third secondary coil are the same, and the winding directions of the first shielding coil and the second shielding coil are opposite to the winding direction of the primary coil.
The first secondary coil and the third secondary coil have the same number of turns and are smaller than the number of turns of the second secondary coil.
The utility model provides a machine is examined to gold, includes first drive circuit, transmitting coil and first receiving coil, second receiving coil, machine is examined to gold still includes second drive circuit, third drive circuit, first shield coil and second shield coil, first receiving coil, transmitting coil, second receiving coil and second shield coil arrange in proper order, transmitting coil, first shield coil and second shield coil correspond respectively and are connected to first drive circuit, second drive circuit and third drive circuit, and the direction of current in first shield coil and the second shield coil is the same to all opposite with the direction of current in the transmitting coil, wherein, the direction of current is clockwise or anticlockwise.
The utility model provides a machine is examined to gold, includes first drive circuit, transmitting coil and first receiving coil, second receiving coil, machine is examined to gold still includes second drive circuit, first shield coil and second shield coil, first receiving coil, transmitting coil, second receiving coil and second shield coil arrange in proper order, transmitting coil is connected to first drive circuit, first shield coil and second shield coil all are connected to second drive circuit, and the direction of current in first shield coil and the second shield coil is the same to all opposite with the direction of current in the transmitting coil, wherein, the direction of current is clockwise or anticlockwise.
Compared with the prior art, the invention has the following beneficial effects: through having designed two shield coils, be located outside two receiving coil respectively to two shield coil's magnetic field direction is opposite with transmitting coil's magnetic field direction, thereby can offset transmitting coil's magnetic field, reduces the metal area, and then the overall arrangement that the line was produced to miniaturized messenger gold of being convenient for is compacter.
Drawings
FIG. 1 is a schematic layout of a coil according to the present invention;
FIG. 2 is a schematic diagram of the principles of the present invention;
FIG. 3 is a schematic view of a gold detection machine according to some embodiments of the present invention;
FIG. 4 is a schematic view of a gold detection machine according to another embodiment of the present invention;
FIG. 5 is a schematic view of a gold detection machine according to yet another embodiment of the present invention;
FIG. 6 is a schematic view of a gold detection machine according to some embodiments of the present invention;
wherein: 1. the controller 2, the first drive circuit 3, the receiving demodulation circuit 4, the coil assembly 5, the second drive circuit 6, the third drive circuit 41, the transmitting coil 42, the first receiving coil 43, the second receiving coil 44, the first shielding coil 45 and the second shielding coil.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
A gold detection machine comprises a controller 1, a first driving circuit 2, a receiving demodulation circuit 3, a transmitting coil 41, a first receiving coil 42 and a second receiving coil 43, as shown in figure 3, wherein the controller 1 is respectively connected with the first driving circuit 2 and the receiving demodulation circuit 3, the receiving demodulation circuit 3 is connected with the first receiving coil 42 and the second receiving coil 43, the gold detection machine further comprises a first shielding coil 44 and a second shielding coil 45, in a coil group 4, as shown in figure 1, the first shielding coil 44, the first receiving coil 42, the transmitting coil 41, the second receiving coil 43 and the second shielding coil 45 are sequentially arranged, current directions in the first shielding coil 44 and the second shielding coil 45 are the same and are opposite to the current direction in the transmitting coil 41, and the current direction is clockwise or anticlockwise.
Through having designed two shield coils, be located outside two receiving coil respectively to two shield coil's magnetic field direction is opposite with transmitting coil 41's magnetic field direction, as shown in fig. 2, shield coil forms the magnetic field opposite with transmitting magnetic field direction at the periphery, forms the protection, makes the outer disturbance of window unable interference internal magnetic field, thereby can offset transmitting coil 41's magnetic field, reduces the metal area, and then the overall arrangement that the miniaturized messenger gold of being convenient for produced the line is examined to the gold is compacter.
In some embodiments, as shown in fig. 6, the transmitting coil 41, the first shielding coil 44 and the second shielding coil 45 are all connected to the first driving circuit 2, so that the structure of the gold inspection machine can be simplified, fewer components can be used, the gold inspection machine can be miniaturized, and the cost can be reduced at the same time, in one embodiment, the first driving circuit 2 comprises a main circuit and a transmitting transformer, the transmitting transformer comprises a primary coil, a first secondary coil, a second secondary coil and a third secondary coil, the first secondary coil, the second secondary coil and the third secondary coil are connected, the second secondary coil is connected with the transmitting coil 41, the first secondary coil is connected with the first shielding coil 44, the third secondary coil is connected with the second shielding coil 45, and the winding directions of the first secondary coil and the third secondary coil are the same and are opposite to the winding direction of the second secondary coil, and the first shielding coil 44, the second shielding coil, the transmitting transformer and the transmitting transformer are connected with the first secondary coil, the third secondary coil, The primary coil and the second shield coil 45 are wound in the same direction. Therefore, the magnetic field directions of the two shielding coils can be opposite to the magnetic field direction of the transmitting coil 41 by selecting different taps of the transmitting transformer, the structure of the outgoing line of the original window coil is not damaged, and the reliability is high. Of course, as another embodiment, the first driving circuit 2 may also include a main circuit and a transmitting transformer, the transmitting transformer includes a primary coil, a first secondary coil, a second secondary coil and a third secondary coil, the first secondary coil, the second secondary coil and the third secondary coil are connected, the second secondary coil is connected to the transmitting coil 41, the first secondary coil is connected to the first shielding coil 44, the third secondary coil is connected to the second shielding coil 45, the winding directions of the first secondary coil, the second secondary coil and the third secondary coil are the same, the winding directions of the first shielding coil 44 and the second shielding coil 45 are the same, and are both opposite to the winding direction of the primary coil, and similar effects may also be achieved.
In order to achieve the effect, the number of turns of the first secondary coil and the third secondary coil is the same and is smaller than that of the second secondary coil.
In some embodiments, as shown in fig. 4, the gold inspection machine further includes a second driving circuit 5 and a third driving circuit 6, the transmitting coil 41, the first shielding coil 44 and the second shielding coil 45 are correspondingly connected to the first driving circuit 2, the second driving circuit 5 and the third driving circuit 6, respectively, and the directions of currents in the first shielding coil 44 and the second shielding coil 45 are the same and are opposite to the directions of currents in the transmitting coil 41, wherein the directions of currents are clockwise or counterclockwise, similar shielding effects can be achieved, but material and control costs are increased, and stability and reliability are also reduced.
In some embodiments, as shown in fig. 5, the gold inspection machine further includes a second driving circuit 5, a first shielding coil 44, and a second shielding coil 45, the transmitting coil 41 is connected to the first driving circuit 2, the first shielding coil 44 and the second shielding coil 45 are both connected to the second driving circuit 5, and the current directions in the first shielding coil 44 and the second shielding coil 45 are the same and are opposite to the current direction in the transmitting coil 41, wherein the current direction is clockwise or counterclockwise, similar shielding effects can be achieved, but material and control costs are increased, and stability and reliability are also reduced.
Claims (10)
1. The utility model provides a machine is examined to gold, includes first drive circuit, transmitting coil and first receiving coil, second receiving coil, its characterized in that, machine is examined to gold still includes first shield coil and second shield coil, first receiving coil, transmitting coil, second receiving coil and second shield coil arrange in proper order, transmitting coil, first shield coil and second shield coil all are connected to first drive circuit, and the current direction in first shield coil and the second shield coil is the same to all opposite with the current direction in the transmitting coil, wherein, the current direction is clockwise or anticlockwise.
2. The gold detection machine according to claim 1, wherein the first driving circuit comprises a main circuit and a transmitting transformer, the transmitting transformer comprises a primary coil, a first secondary coil, a second secondary coil and a third secondary coil, the first secondary coil, the second secondary coil and the third secondary coil are connected, the second secondary coil is connected with the transmitting coil, the first secondary coil is connected with a first shielding coil, the third secondary coil is connected with a second shielding coil, the winding directions of the first secondary coil and the third secondary coil are the same and are opposite to the winding direction of the second secondary coil, and the winding directions of the first shielding coil, the primary coil and the second shielding coil are the same.
3. The gold detection machine according to claim 1, wherein the first driving circuit comprises a main circuit and a transmitting transformer, the transmitting transformer comprises a primary coil, a first secondary coil, a second secondary coil and a third secondary coil, the first secondary coil, the second secondary coil and the third secondary coil are connected, the second secondary coil is connected with the transmitting coil, the first secondary coil is connected with a first shielding coil, the third secondary coil is connected with a second shielding coil, the winding directions of the first secondary coil, the second secondary coil and the third secondary coil are the same, and the winding directions of the first shielding coil and the second shielding coil are the same and are opposite to the winding direction of the primary coil.
4. A gold detection machine according to claim 2 or 3 wherein the first and third secondary windings have the same number of turns and are less than the number of turns of the second secondary winding.
5. The utility model provides a machine transmitting module is examined to gold, its characterized in that includes first drive circuit, transmitting coil, first shield coil and second shield coil, first shield coil, transmitting coil and second shield coil arrange in proper order, transmitting coil, first shield coil and second shield coil all are connected to first drive circuit, and the current direction in first shield coil and the second shield coil is the same to all opposite with the current direction in the transmitting coil, wherein, the current direction is clockwise or anticlockwise.
6. The gold detection machine transmitting module according to claim 5, wherein the first driving circuit comprises a main circuit and a transmitting transformer, the transmitting transformer comprises a primary coil, a first secondary coil, a second secondary coil and a third secondary coil, the first secondary coil, the second secondary coil and the third secondary coil are connected, the second secondary coil is connected with the transmitting coil, the first secondary coil is connected with the first shielding coil, the third secondary coil is connected with the second shielding coil, the winding directions of the first secondary coil and the third secondary coil are the same and are opposite to the winding direction of the second secondary coil, and the winding directions of the first shielding coil, the primary coil and the second shielding coil are the same.
7. The gold detection machine transmitting module according to claim 5, wherein the first driving circuit comprises a main circuit and a transmitting transformer, the transmitting transformer comprises a primary coil, a first secondary coil, a second secondary coil and a third secondary coil, the first secondary coil, the second secondary coil and the third secondary coil are connected, the second secondary coil is connected with the transmitting coil, the first secondary coil is connected with the first shielding coil, the third secondary coil is connected with the second shielding coil, the winding directions of the first secondary coil, the second secondary coil and the third secondary coil are the same, and the winding directions of the first shielding coil and the second shielding coil are the same and are opposite to the winding direction of the primary coil.
8. A gold detector transmitter module as claimed in claim 6 or 7 wherein the first and third secondary windings have the same number of turns and are less than the number of turns of the second secondary winding.
9. The utility model provides a machine is examined to gold, includes first drive circuit, transmitting coil and first receiving coil, second receiving coil, its characterized in that, machine is examined to gold still includes second drive circuit, third drive circuit, first shield coil and second shield coil, first receiving coil, transmitting coil, second receiving coil and second shield coil are arranged in proper order, transmitting coil, first shield coil and second shield coil correspond respectively and are connected to first drive circuit, second drive circuit and third drive circuit, and the current direction in first shield coil and the second shield coil is the same to all opposite with the current direction in the transmitting coil, wherein, the current direction is clockwise or anticlockwise.
10. The utility model provides a machine is examined to gold, includes first drive circuit, transmitting coil and first receiving coil, second receiving coil, its characterized in that, machine is examined to gold still includes second drive circuit, first shield coil and second shield coil, first receiving coil, transmitting coil, second receiving coil and second shield coil arrange in proper order, transmitting coil is connected to first drive circuit, first shield coil and second shield coil all are connected to second drive circuit, and the current direction in first shield coil and the second shield coil is the same to all opposite with the current direction in the transmitting coil, wherein, current direction is clockwise or anticlockwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011633822.5A CN112612062B (en) | 2020-12-31 | 2020-12-31 | Gold inspection machine and gold inspection machine transmitting module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011633822.5A CN112612062B (en) | 2020-12-31 | 2020-12-31 | Gold inspection machine and gold inspection machine transmitting module |
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| CN112612062A true CN112612062A (en) | 2021-04-06 |
| CN112612062B CN112612062B (en) | 2023-12-19 |
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Citations (9)
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|---|---|---|---|---|
| WO1991003746A1 (en) * | 1989-09-08 | 1991-03-21 | Atomic Energy Of Canada Limited | Metal detecting system |
| JPH10132949A (en) * | 1996-10-29 | 1998-05-22 | Toshitaka Nakano | Metal detecting method and detecting head for metal detector |
| EP0927890A2 (en) * | 1998-01-05 | 1999-07-07 | Picker International, Inc. | Shielded gradient coil assembly for magnetic resonance imaging system |
| US5952822A (en) * | 1996-10-24 | 1999-09-14 | Allen-Bradley Company, Llc | Method and apparatus for proximity sensing in the presence of an external field |
| CN107884835A (en) * | 2017-12-20 | 2018-04-06 | 福建省麦雅数控科技有限公司 | A kind of highly sensitive SMART METALS detector |
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-
2020
- 2020-12-31 CN CN202011633822.5A patent/CN112612062B/en active Active
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| CN112612062B (en) | 2023-12-19 |
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Address after: Room 1038, 2 / F, self building, No. 555, Dongchuan Road, Minhang District, Shanghai 201108 Patentee after: TECHIK INSTRUMENT (SHANGHAI) Co.,Ltd. Country or region after: Zhong Guo Address before: 200237 Shanghai Xuhui District City Jia Chuan Road No. 245 Building No. 3 room 506 Patentee before: TECHIK INSTRUMENT (SHANGHAI) Co.,Ltd. Country or region before: Zhong Guo |
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