CN114778657A - Object stage and system for magnetoacoustic signal detection - Google Patents
Object stage and system for magnetoacoustic signal detection Download PDFInfo
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- CN114778657A CN114778657A CN202210455091.2A CN202210455091A CN114778657A CN 114778657 A CN114778657 A CN 114778657A CN 202210455091 A CN202210455091 A CN 202210455091A CN 114778657 A CN114778657 A CN 114778657A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/725—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables by using magneto-acoustical effects or the Barkhausen effect
Abstract
The embodiment of the invention discloses an objective table and a system for detecting magnetoacoustic signals. The objective table for detecting the magnetoacoustic signals comprises an objective table, a shielding plate, a rotating plate and a supporting column; one end of the supporting column is vertically fixed on the rotating disc, the other end of the supporting column is vertically fixed on the object carrying disc, the shielding disc is parallel to the rotating disc, and the shielding disc is nested on the supporting column; the rotating disc is used for driving the object carrying disc and the shielding disc to rotate through the supporting column, and the shielding disc is used for shielding a magnetic field generated in the supporting column; the carrying plate is used for placing a sample and loading an exciting current to the sample. The objective table for detecting the magnetoacoustic signals, which is designed by the scheme, can drive the sample to rotate, and can provide stable excitation current for the sample in the rotation process of the sample, so that the interference of a magnetic field generated by transmitting the excitation current on the detection of the magnetoacoustic signals is reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of medical imaging, in particular to an objective table and a system for detecting magnetoacoustic signals.
Background
The magnetoacoustic signals may reflect internal electrical properties of the tissue sample, thereby providing a basis for diagnosing disease. In imaging examinations, it is often necessary to perform a circular scan of the tissue sample. However, with the injection magnetoacoustic imaging method, a fixed probe is usually used to detect the rotating sample, i.e. the sample needs to rotate together with the excitation electrode. When the sample and the excitation electrode rotate together, the lead connected with the excitation electrode can be wound together to cause the displacement of the excitation electrode to influence the loading of stable excitation current on the sample, and the excitation current transmitted in the lead can generate a magnetic field to influence the detection probe to receive the magnetoacoustic signal.
Disclosure of Invention
The embodiment of the invention provides an object stage and a system for detecting a magnetoacoustic signal, which are used for driving a sample to rotate, providing stable excitation current for the sample in the rotation process of the sample and reducing the interference of a magnetic field generated by transmitting the excitation current on the detection of the magnetoacoustic signal.
The embodiment of the invention provides an objective table for detecting magnetoacoustic signals, which comprises an objective table, a shielding disc, a rotating disc and supporting columns, wherein the objective table comprises a first objective table body, a second objective table body and a first supporting column;
one end of the supporting column is vertically fixed on the rotating disc, the other end of the supporting column is vertically fixed on the object carrying disc, the shielding disc is parallel to the rotating disc, and the shielding disc is nested on the supporting column;
the rotating disc is used for driving the object carrying disc and the shielding disc to rotate through the supporting column, and the shielding disc is used for shielding a magnetic field generated in the supporting column; the carrying plate is used for placing a sample and loading an exciting current to the sample.
Optionally, the stage for magnetoacoustic signal detection further comprises a sample excitation source;
the sample excitation source comprises a connecting wire, a first excitation electrode and a second excitation electrode;
the connecting wire is connected with the first exciting electrode and the second exciting electrode and is used for transmitting exciting current for the first exciting electrode and the second exciting electrode.
Optionally, the column body of the support column comprises an incoming line hole and an outgoing line hole;
the wire inlet hole is positioned between the shielding disc and the rotating disc, and the wire outlet hole is positioned between the shielding disc and the carrying disc;
and the connecting wire penetrates into the supporting column from the wire inlet hole, penetrates out of the wire outlet hole and is connected with the first excitation electrode and the second excitation electrode.
Optionally, the carrier plate comprises a first through hole and a second through hole;
the support column is hollow, and the wire outlet hole comprises a first wire outlet hole and a second wire outlet hole;
one lead of the connecting wire penetrates out of the first wire outlet hole to be connected with the first excitation electrode, and the other lead of the connecting wire penetrates out of the second wire outlet hole to be connected with the second excitation electrode;
the first excitation electrode is arranged in the first through hole, and the second excitation electrode is arranged in the second through hole.
Optionally, the shield disk comprises a shield support disk, a magnetic shield layer and an acoustic shield layer;
the magnetic shielding layer and the sound shielding layer are arranged on any side, parallel to the rotating disk, of the shielding supporting disk.
Optionally, the rotating disk further comprises a pointer;
the side surface of the rotating disc, which is vertical to the horizontal direction, also comprises angle scales;
the pointer is used for indicating the rotation angle of the rotating disk according to the angle scale.
Optionally, the shield plate is adjacent to or in contact with the carrier plate.
Optionally, the materials used for the carrier plate, the shielding plate, the rotating plate and the supporting column comprise acrylic materials.
In a second aspect, embodiments of the present invention further provide a system for detecting a magnetoacoustic signal, where the system includes the object stage for detecting a magnetoacoustic signal, the motor module, the excitation device, the magnetic field device, and the detection device in any one of the foregoing embodiments;
the excitation device is used for providing excitation current for the carrying disc;
the motor module is used for driving the rotating disc to rotate;
the magnetic field device is used for providing a static magnetic field for the sample;
the detection device is used for detecting a magnetoacoustic signal generated by loading the excitation current on the sample in the static magnetic field.
Optionally, the magnetic field device is parallel to the rotating disc, and the magnetic field device is nested on the supporting column;
the magnetic field device is arranged between the shielding disc and the carrying disc or between the shielding disc and the rotating disc.
According to the embodiment of the invention, one end of the supporting column is vertically fixed on the rotating disk, the other end of the supporting column is vertically fixed on the object carrying disk, the shielding disk is parallel to the rotating disk, and the shielding disk is nested on the supporting column. The supporting column can transmit excitation current to the carrying plate, so that the carrying plate can load the excitation current to the sample while carrying the sample. The rotating disc can drive the object carrying disc and the shielding disc to rotate through the supporting columns, so that all parts on the whole object carrying table are relatively static, and the object carrying disc can provide stable excitation current for a sample in rotation. The shielding disc can shield the magnetic field generated by transmitting the excitation current in the supporting column, so that the interference of the magnetic field generated by transmitting the excitation current on the detection of the magnetoacoustic signal is reduced. In conclusion, the objective table for detecting the magnetoacoustic signal, which is designed by the scheme, can drive the sample to rotate, and can provide stable excitation current for the sample in the rotation of the sample, so that the interference of a magnetic field generated by the transmission of the excitation current on the detection of the magnetoacoustic signal is reduced.
Drawings
While the drawings used in the description of the embodiments or prior art will be described briefly to more clearly illustrate the embodiments or prior art, it is obvious that the drawings in the description will be some specific embodiments of the present invention, and it will be obvious to those skilled in the art that the basic concepts of the device structure, the driving method and the manufacturing method disclosed and suggested by the various embodiments of the present invention can be extended and extended to other structures and drawings without doubt being within the scope of the claims of the present invention.
Fig. 1 is a schematic structural diagram of an object stage for detecting a magnetoacoustic signal according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a sample excitation source according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a supporting column according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a carrier tray according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a shield disk according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of another shield disk provided in accordance with an embodiment of the present invention;
FIG. 7 is a cross-sectional view of another shield disk provided in accordance with an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of an objective table for magnetoacoustic signal detection according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a system for magnetoacoustic signal detection according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another system for detecting a magnetoacoustic signal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
An embodiment of the present invention provides an object stage for detecting a magnetoacoustic signal, and fig. 1 is a schematic structural diagram of an object stage for detecting a magnetoacoustic signal according to an embodiment of the present invention. As shown in fig. 1, the stage for magnetoacoustic signal detection includes a carrier plate 110, a shielding plate 120, a rotating plate 130, and support columns 140; one end of the supporting column 140 is vertically fixed on the rotating disc 130, the other end of the supporting column 140 is vertically fixed on the object carrying disc 110, the shielding disc 120 is parallel to the rotating disc 130, and the shielding disc 120 is nested on the supporting column 140; the rotating disc 130 is used for driving the carrier disc 110 and the shielding disc 120 to rotate through the supporting columns 140, and the shielding disc 120 is used for shielding a magnetic field generated in the supporting columns 140; the carrier plate 110 is used to place a sample and to load the sample with an excitation current.
During the process of scanning the sample circumferentially, the sample needs to be rotated under the condition of power-on so as to collect magnetoacoustic signals generated by different areas of the sample. The stage for magnetoacoustic signal detection has two main functions: 1) the sample is energized by applying an excitation current to the sample. 2) The sample is driven to rotate. 3) Interference factors influencing the detection of the magnetoacoustic signal (such as a magnetic field generated by transmitted excitation current or the inability to load the sample with stable excitation current) are reduced in the process of driving the sample to rotate.
Specifically, the stage for magnetoacoustic signal detection mainly includes a carrier plate 110, a shield plate 120, a rotating plate 130, and a support column 140. One end of the supporting column 140 is vertically fixed on the rotating disc 130, the other end of the supporting column 140 is vertically fixed on the carrying disc 110, the shielding disc 120 is parallel to the rotating disc 130, and the shielding disc 120 is nested in the supporting column 140. The rotating plate 130 is a base plate of the entire stage and is a power source of the entire stage. For example, the rotating disc 130 may be connected to the motor module, and rotate with the motor module, so as to rotate the entire stage. Support posts 140 are support connection bridges for the entire stage, and vertically support carrier plate 110 and shield plate 120 such that rotating plate 130 can rotate carrier plate 110 and shield plate 120 via support posts 140. In addition, the supporting column 140 can transmit an excitation current to the carrier plate 110, so that the carrier plate 110 can load the sample with the excitation current while carrying the sample. When the rotating plate 130 drives the carrier plate 110 and the shielding plate 120 to rotate through the supporting posts 140, all parts on the whole stage are relatively static, so that the stage can provide stable excitation current for the sample. When the support column 140 transmits the excitation current to the object carrying plate 110, a magnetic field is generated, and the shielding plate 120 can shield the magnetic field generated in the support column 140, so that the interference of the magnetic field generated by the support column 140 due to the transmission of the excitation current on the detection of the magnetoacoustic signal is reduced.
According to the embodiment of the invention, one end of the support column is vertically fixed on the rotating disk, the other end of the support column is vertically fixed on the object carrying disk, the shielding disk is parallel to the rotating disk, and the shielding disk is nested on the support column. The support column can transmit excitation current to the object carrying disc, so that the object carrying disc can load the excitation current to the sample while carrying the sample. The rotating disc can drive the object carrying disc and the shielding disc to rotate through the supporting columns, so that all parts on the whole object carrying table are relatively static, and the object carrying disc can provide stable excitation current for a sample in rotation. The shielding disc can shield the magnetic field generated by transmitting the excitation current in the supporting column, so that the interference of the magnetic field generated by transmitting the excitation current on the detection of the magnetoacoustic signal is reduced. Therefore, the objective table for detecting the magnetoacoustic signals, which is designed by the scheme, can drive the sample to rotate, and can provide stable excitation current for the sample in the rotation of the sample, so that the interference of a magnetic field generated by the transmission of the excitation current on the detection of the magnetoacoustic signals is reduced.
Fig. 2 is a schematic structural diagram of a sample excitation source according to an embodiment of the present invention. Referring to fig. 1-2, the stage for magnetoacoustic signal detection further includes a sample excitation source 150; the sample excitation source 150 includes a connection line 151, a first excitation electrode 152, and a second excitation electrode 153; the connection lines 151 are connected to the first and second driving electrodes 152 and 153, and the connection lines 151 are used to transmit driving currents to the first and second driving electrodes 152 and 153.
Wherein the stage for magnetoacoustic signal detection further comprises a template excitation source, the sample excitation source 150 comprises a connection line 151 for transmitting an excitation current, a first excitation electrode 152 and a second excitation electrode 153 for loading the template with the excitation current. Specifically, a connection line 151 of the sample excitation source 150 is disposed inside the support column 140, whereby a magnetic field due to the excitation current is generated inside the support column 140. The first excitation electrode 152 and the second excitation electrode 153 of the sample excitation source 150 are disposed on the stage, thereby allowing the carrier plate 110 to load the sample with an excitation current while carrying the sample.
Fig. 3 is a schematic structural diagram of a supporting pillar according to an embodiment of the present invention. Referring to fig. 1-3, the body of support post 140 includes an inlet hole 141 and an outlet hole 142; wire inlet hole 141 is located between shield plate 120 and rotating plate 130, and wire outlet hole 142 is located between shield plate 120 and carrier plate 110; the connecting wire 151 penetrates into the supporting post 140 from the wire inlet hole 141, and the connecting wire 151 penetrates out of the wire outlet hole 142 to be connected with the first excitation electrode 152 and the second excitation electrode 153.
The column body of the support column 140 includes a line inlet 141 and a line outlet 142, the line inlet is a small hole through which the connecting line 151 penetrates into the support column 140, and the line outlet 142 is a small hole through which the connecting line 151 penetrates out of the support column 140. Specifically, the wire inlet hole 141 is located between the shielding plate 120 and the rotating plate 130, and the wire inlet hole 141 may be located at a position where the supporting column 140 is close to the rotating plate 130, whereby the connecting wire 151 exposed to the outside of the supporting column 140 may be reduced. The wire outlet 142 is located between the shielding plate 120 and the carrier plate 110, and the connecting wire 151 passes through the wire outlet 142 and is connected to the first excitation electrode 152 and the second excitation electrode 153. Therefore, the portions of the connecting wires 151 entering the inner portion of the supporting column 140 from the wire inlet hole 141 and exiting the wire outlet holes 142 of the supporting column 140 rotate with the rotating disk 130, that is, the portions of the connecting wires 151 entering the inner portion of the supporting column 140 from the wire inlet hole 141 and exiting the wire outlet holes 142 of the supporting column 140 remain relatively stationary during the rotation of the rotating disk 130, so that the connecting wires 151 exiting the wire outlet holes 142 of the supporting column 140 are prevented from being twisted, the problem that the first excitation electrodes 152 and the second excitation electrodes 153 are displaced due to the twisting of the connecting wires 151 exiting the wire outlet holes 142 of the supporting column 140 is prevented, and the object carrying disk 110 can provide stable excitation current for the sample during the rotation is further ensured.
Fig. 4 is a schematic structural diagram of a carrier tray according to an embodiment of the present invention. Referring to fig. 1 to 4, the carrier tray 110 includes a first through hole 111 and a second through hole 112; the supporting column 140 is hollow, and the outlet hole 142 includes a first outlet hole 1421 and a second outlet hole 1422; one conducting wire of the connecting wire 151 penetrates out of the first wire outlet 1421 to be connected with the first excitation electrode 152, and the other conducting wire of the connecting wire 151 penetrates out of the second wire outlet 1422 to be connected with the second excitation electrode 153; the first excitation electrode 152 is installed in the first through hole 111, and the second excitation electrode 153 is installed in the second through hole 112.
The supporting column 140 is hollow inside, so that the connecting wire 151 can penetrate into the supporting column 140 from the wire inlet hole 141. The support column 140 has two outlet holes 142, i.e., a first outlet hole 1421 and a second outlet hole 1422. The connecting wire 151 may be a twisted pair, one of the wires of the twisted pair may pass through the first wire outlet 1421 and be connected to the first excitation electrode 152, and the first excitation electrode 152 may be installed in the first through hole 111 of the carrier plate 110. The other wire of the twisted pair is threaded out of the second wire outlet 1422 and connected to the second excitation electrode 153, and the second excitation electrode 153 may be installed in the second through hole 112 of the carrier plate 110. Therefore, when the sample is placed on the carrier plate 110, the sample can be loaded with the excitation current only by ensuring that the sample is in contact with the area of the carrier plate 110 where the first excitation electrode 152 and the second excitation electrode 153 are installed.
Fig. 5 is a sectional view of a shield disk according to an embodiment of the present invention, fig. 6 is a sectional view of another shield disk according to an embodiment of the present invention, and fig. 7 is a sectional view of another shield disk according to an embodiment of the present invention, as shown in fig. 5 to 7, the shield disk includes a shield support disk 121, a magnetic shield layer 122, and an acoustic shield layer 123; the magnetic shield layer 122 and the acoustic shield layer 123 are provided on either side of the shield support plate 121 parallel to the rotating disk.
Wherein the shield disk is formed by stacking a shield support disk 121, a magnetic shield layer 122 and an acoustic shield layer 123. Specifically, the shield support disc 121 is a carrier for the support of the magnetic shield layer 122 and the acoustic shield layer 123. The magnetic shielding layer 122 can shield magnetic fields in the area below the position of the shielding plate, for example, the magnetic shielding layer 122 can shield magnetic fields generated by excitation currents transmitted by the supporting-pillar interconnection lines below the position of the shielding plate, so as to prevent the magnetic fields generated by the excitation currents transmitted by the supporting-pillar interconnection lines below the position of the shielding plate from affecting samples in the carrier plate disposed above the shielding plate. The acoustic shielding layer 123 may absorb noise in an area below the position of the shielding plate, for example, the acoustic shielding layer 123 may absorb current noise generated by excitation current transmitted by the supporting pillar internal connection line below the position of the shielding plate, so as to prevent the current noise generated by the supporting pillar internal connection line below the position of the shielding plate from affecting a sample in the carrier plate disposed above the shielding plate.
It should be noted that the magnetic shield layer 122 and the acoustic shield layer 123 are disposed on either side of the shield support disc 121 parallel to the rotating disc, and fig. 5 to 7 are merely exemplary and schematic stacking structures of the shield support disc 121, the magnetic shield layer 122 and the acoustic shield layer 123, which is not limited by the present solution.
Fig. 8 is a schematic structural diagram of an objective table for magnetoacoustic signal detection according to an embodiment of the present invention, and as shown in fig. 8, the rotating disc 130 further includes a pointer 131; the side of the rotating disc 130 perpendicular to the horizontal direction also includes an angle scale; the pointer 131 is used to indicate the rotation angle of the rotary plate 130 according to the angle scale.
The side of the rotating disc 130 perpendicular to the horizontal direction further includes an angle scale, and the initial zero position of the angle scale of the rotating disc 130 further includes a pointer 131 indicating the angle scale. During the rotation of the rotating disc 130, the specific position of the angle scale can be indicated by the pointer 131, and the rotation angle of the rotating disc 130 can be known. That is, the rotation angle of the rotating disk 130 can be known in real time through the pointer 131 and the angle scale.
Optionally, the shield plate is adjacent to or in contact with the carrier plate.
The wire outlet hole of the support column is positioned between the object carrying disc and the shielding disc, when the connecting wire penetrates out of the wire outlet hole and is connected with the first excitation electrode and the second excitation electrode, the connecting wire can generate a magnetic field when transmitting excitation current to the first excitation electrode and the second excitation electrode. Because the shielding plate can not shield the magnetic field and the current noise generated by the transmission of the excitation current by the connecting wires in the area above the shielding plate, the closer the shielding plate is nested on the supporting column to the object carrying plate, the shorter the connecting wires in the area above the shielding plate are, the weaker the magnetic field and the current noise generated by the connecting wires in the area above the shielding plate are, and the smaller the influence of the magnetic field and the current noise generated by the connecting wires in the area above the shielding plate on the sample in the object carrying plate is.
Optionally, the material adopted by the carrying plate, the shielding plate, the rotating plate and the supporting columns comprises an acrylic material.
Wherein, the plasticity of the acrylic material is strong, and the processing is easy. The acrylic material has the characteristics of non-conductivity, non-permeability and no influence on the detection of magnetoacoustic signals. In addition, the acrylic material also has the characteristics of better transparency and easy dyeing. From this, carry thing dish, shielding dish, rotary disk and support column and adopt ya keli material to make, easily make, can not detect the production of influence to the magnetoacoustic signal, the objective table of design still has the aesthetic property concurrently.
Fig. 9 is a schematic structural diagram of a system for detecting a magnetic acoustic signal according to an embodiment of the present invention, as shown in fig. 9, the system for detecting a magnetic acoustic signal includes a stage for detecting a magnetic acoustic signal, a motor module 200, an excitation device 300, a magnetic field device 400, and a detection device 500; the excitation device 300 is used for providing excitation current for the carrier disc 110; the motor module 200 is used for driving the rotating disc 130 to rotate; the magnetic field device 400 is used to provide a static magnetic field to the sample; the detection device 500 is used for detecting a magnetoacoustic signal generated by loading the excitation current in the static magnetic field of the sample.
Specifically, the excitation device 300 is connected to the supporting column 140, and the excitation device 300 can provide an excitation current to the tray 110 through the supporting column 140. The motor module 200 is connected to the rotating disc 130, for example, the electrode module may be connected to the rotating disc 130 through a belt or a gear, so as to drive the rotating disc 130 to rotate 360 °. The magnetic field device 400 is used to provide a static magnetic field to the sample, wherein the direction of the static magnetic field provided to the sample by the magnetic field device 400 is perpendicular to the direction of the current. The detection device 500 is used for detecting a magnetoacoustic signal generated by loading the excitation current in the static magnetic field, so as to perform imaging according to the magnetoacoustic signal and reflect the electrical characteristics in the sample, thereby providing a basis for diagnosing diseases.
In addition, the system for detecting a magnetoacoustic signal includes the stage for detecting a magnetoacoustic signal provided in any embodiment of the present invention, and therefore, the system has the beneficial effects of the stage for detecting a magnetoacoustic signal provided in the embodiment of the present invention, and details are not described here.
Optionally, the magnetic field device is parallel to the rotating disc, and the magnetic field device is nested on the supporting column; the magnetic field device is arranged between the shielding disc and the carrying disc or between the shielding disc and the rotating disc.
The magnetic field device can adopt a magnet, and when the magnet is parallel to the rotating disk and is embedded on the supporting column, the direction of a static magnetic field provided for a sample by the magnet is vertical to the direction of current.
Illustratively, fig. 10 is a schematic structural diagram of another system for magnetoacoustic signal detection according to an embodiment of the present invention, as shown in fig. 10, when the magnetic field apparatus 400 employs a magnet, the magnet is parallel to the rotating disk 130, and is nested on the supporting column 140, which may be disposed between the shielding disk 120 and the carrier disk 110, so that the direction of the static magnetic field provided by the magnet to the sample is perpendicular to the direction of the current.
It should be noted that the magnet is parallel to the rotatable disk 130, nested on the support posts 140, which may also be disposed between the shield disk 120 and the rotatable disk 130. Fig. 10 shows the specific position of the magnet device for exemplary purposes only, and the present embodiment does not limit the position of the magnetic field device 400, and only needs to ensure that the direction of the static magnetic field provided to the sample is perpendicular to the direction of the current.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An objective table for detecting magnetoacoustic signals is characterized by comprising an objective carrying disc, a shielding disc, a rotating disc and a supporting column;
one end of the supporting column is vertically fixed on the rotating disc, the other end of the supporting column is vertically fixed on the object carrying disc, the shielding disc is parallel to the rotating disc, and the shielding disc is nested on the supporting column;
the rotating disc is used for driving the carrying disc and the shielding disc to rotate through the supporting column, and the shielding disc is used for shielding a magnetic field generated in the supporting column; the carrying plate is used for placing a sample and loading an excitation current to the sample.
2. The stage for magnetoacoustic signal detection of claim 1, further comprising a sample excitation source;
the sample excitation source comprises a connecting line, a first excitation electrode and a second excitation electrode;
the connecting wire is connected with the first excitation electrode and the second excitation electrode, and is used for transmitting excitation current to the first excitation electrode and the second excitation electrode.
3. The object table for magnetoacoustic signal detection of claim 2, wherein the post body of the support post includes an entrance hole and an exit hole;
the wire inlet hole is positioned between the shielding disc and the rotating disc, and the wire outlet hole is positioned between the shielding disc and the object carrying disc;
the connecting wire penetrates into the supporting column from the wire inlet hole, penetrates out of the wire outlet hole and is connected with the first excitation electrode and the second excitation electrode.
4. The object table for magnetoacoustic signal detection of claim 3, wherein the object carrying tray comprises a first through hole and a second through hole;
the supporting column is hollow, and the wire outlet holes comprise a first wire outlet hole and a second wire outlet hole;
one lead of the connecting wire penetrates out of the first wire outlet hole and is connected with the first excitation electrode, and the other lead of the connecting wire penetrates out of the second wire outlet hole and is connected with the second excitation electrode;
the first excitation electrode is installed in the first through hole, and the second excitation electrode is installed in the second through hole.
5. The stage for magnetoacoustic signal detection of claim 1, wherein the shield disk comprises a shield support disk, a magnetic shield layer, and an acoustic shield layer;
the magnetic shielding layer and the sound shielding layer are arranged on any side, parallel to the rotating disk, of the shielding supporting disk.
6. The stage for magnetoacoustic signal detection of claim 1, wherein the rotating disk further comprises a pointer;
the side surface of the rotating disc, which is vertical to the horizontal direction, also comprises angle scales;
the pointer is used for indicating the rotating angle of the rotating disk according to the angle scale.
7. The object table for magnetoacoustic signal detection of claim 1, wherein the shield tray is proximate to or in contact with the object tray.
8. The object table for magnetoacoustic signal detection of claim 1, wherein the material used for the carrier plate, the shielding plate, the rotating plate and the support posts comprises an acrylic material.
9. A system for magnetoacoustic signal detection, comprising the stage for magnetoacoustic signal detection, the motor module, the excitation device, the magnetic field device, and the detection device of any one of claims 1 to 8;
the excitation device is used for providing excitation current for the carrying plate;
the motor module is used for driving the rotating disc to rotate;
the magnetic field device is used for providing a static magnetic field for the sample;
the detection device is used for detecting a magnetoacoustic signal generated by loading the sample with an excitation current in the static magnetic field.
10. The system for magnetoacoustic signal detection of claim 9, wherein the magnetic field device is parallel to the rotating disk, the magnetic field device being nested on the support column;
the magnetic field device is arranged between the shielding disc and the object carrying disc or between the shielding disc and the rotating disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210455091.2A CN114778657A (en) | 2022-04-27 | 2022-04-27 | Object stage and system for magnetoacoustic signal detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210455091.2A CN114778657A (en) | 2022-04-27 | 2022-04-27 | Object stage and system for magnetoacoustic signal detection |
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| CN114778657A true CN114778657A (en) | 2022-07-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115616017A (en) * | 2022-09-30 | 2023-01-17 | 南方科技大学 | Electronic optical test platform device |
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2022
- 2022-04-27 CN CN202210455091.2A patent/CN114778657A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115616017A (en) * | 2022-09-30 | 2023-01-17 | 南方科技大学 | Electronic optical test platform device |
| CN115616017B (en) * | 2022-09-30 | 2023-11-10 | 南方科技大学 | Electronic optical test platform device |
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