CN112213677A - Giant magnetoresistance sensor performance testing device - Google Patents
Giant magnetoresistance sensor performance testing device Download PDFInfo
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- CN112213677A CN112213677A CN202011084464.7A CN202011084464A CN112213677A CN 112213677 A CN112213677 A CN 112213677A CN 202011084464 A CN202011084464 A CN 202011084464A CN 112213677 A CN112213677 A CN 112213677A
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- square coil
- objective table
- regulator
- giant magnetoresistance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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- Measuring Magnetic Variables (AREA)
Abstract
The invention discloses a performance testing device of a giant magnetoresistance sensor, which is characterized by comprising a bottom plate, an objective table, a center regulator, a square coil and a square coil position regulator, wherein a rack is arranged on the bottom plate, and the objective table is matched with the rack and can be transversely regulated along the rack; the objective table is provided with a clamping mechanism which can clamp the giant magneto-resistance sensor; the central regulator is connected with the object stage and can transversely regulate the position of the object stage; the square coil is arranged on the square coil position regulator; the square coil position regulator is matched with the bottom plate rack, and the distance between the square coils is regulated through the handle according to actual test conditions, so that the effect of changing a magnetic field is achieved, and the actual application range of the giant magnetoresistance sensor performance test device is widened. The invention realizes the adjustability among the square coils, provides a magnetic field which is more in line with actual conditions, improves the accuracy of the test, and also has the advantages of simple structure and convenient operation.
Description
Technical Field
The invention relates to the technical field of giant magnetoresistance sensor testing, in particular to a giant magnetoresistance sensor performance testing device.
Background
Giant Magnetoresistance (GMR) is more than 2 times higher than sensitivity of a magnetic head in AMR technology, and the GMR magnetic head is composed of 4 layers of conductive materials and magnetic material films: a sensing layer, a non-conductive interposer, a magnetic pinned layer, and an exchange layer. In short, when a magnetic field exists around the giant magnetoresistance, the resistance of the giant magnetoresistance is sharply reduced, and the giant magnetoresistance sensor needs to be subjected to an anti-interference test in the production and manufacturing process.
The performance testing device for the giant magneto-resistance sensor in the market is inconvenient for adjusting a magnetic field according to actual conditions, the testing range is limited to a certain extent, and meanwhile, the performance testing device does not have the characteristic of generating a high-uniformity magnetic field, and the uniformity of the magnetic field influences the testing result.
Disclosure of Invention
The present invention provides a performance testing device for a giant magnetoresistance sensor, so as to solve the problems that the performance testing device for a giant magnetoresistance sensor proposed in the above background art is inconvenient to adjust a magnetic field according to actual conditions, the testing range is limited to a certain extent, and the performance testing device does not have the characteristic of generating a high-uniformity magnetic field, and the uniformity of the magnetic field affects the testing result.
In order to achieve the purpose, the invention provides the following technical scheme: a giant magnetoresistance sensor performance test device comprises a bottom plate, an object stage, a square coil, a central regulator and a square coil position regulator, wherein a U-shaped groove is arranged in the middle of the bottom plate, dovetail grooves are formed in two sides of the upper end of the U-shaped groove, a rack is installed in the U-shaped groove through screws, the U-shaped groove and the bottom plate form a base, the lower end of the object stage is connected with an adjusting screw rod and forms a movable component with the central regulator, the U-shaped groove is formed in the middle of the upper end of the object stage, threaded holes are formed in two sides of the upper end of the object stage, a giant magnetoresistance sensor clamping mechanism is installed on two sides of the object stage through the adjusting screw rod, the front end of the adjusting screw rod is sleeved with a movable connecting piece, an anti-skid layer and a clamping block are installed on the movable connecting piece, the U-shaped groove is formed, the adjustable coil is matched with a handle knob to form a position adjusting movable mechanism, the front end of the handle knob is connected with a gear, the gear is matched and meshed with a rack of a bottom plate to form a movable adjusting structure, and the square coil is installed on a square coil position adjuster through a screw.
Preferably, the two sides of the objective table are provided with matching threaded holes to be connected with a clamping mechanism, and the lower end adjusting screw is connected with the central adjuster to form a movable structure with an adjustable position.
Preferably, the square coil is in screw connection with the square coil position adjuster, the square coil is close to the surface of the square coil position adjuster, and the square coil position adjuster enables the gear and the rack to be meshed through the handle knob to form a movable structure.
Preferably, the adjusting screw rod penetrates through the inner side of the fixed side plate, and the clamping block and the fixed side plate form a movable structure through a movable connecting sleeve.
Preferably, the anti-skid layer and the clamping blocks are distributed in a parallel shape, and the anti-skid layer and the clamping blocks are fixedly connected.
Compared with the prior art, the invention has the beneficial effects that: the giant magnetoresistance sensor performance testing device is provided with the adjusting screw rod, the screw rod is arranged in the center of the adjuster and is connected with the center adjuster through the screw rod, so that the position of the objective table can be conveniently adjusted, the square coil can have a good dustproof effect due to the packaging arrangement, and the phenomenon that the outer surface of the square coil is attached with dust to influence the performance testing result of the magnetic field on the giant magnetoresistance sensor is avoided;
the square coils are connected with the square coil position regulators at the middle of the bottom plate in an equidistant manner, and the distance between the square coils can be regulated according to the actual test condition, so that the effect of changing the magnetic field is achieved, and the actual application range of the giant magneto resistance sensor performance test device is expanded;
adjusting screw runs through in the inboard of fixed curb plate, makes to reach swing joint's effect between adjusting screw and the clamp splice through the movable connecting sleeve for at the in-process of rotatory adjusting screw regulation clamp splice interval, the clamp splice can not rotate along with adjusting screw's rotation, and the cooperation sets up the skid resistant course in clamp splice one side, guarantees the fastness that giant magnetoresistance sensor is fixed promptly, also plays certain safeguard effect.
Drawings
FIG. 1 is an isometric schematic view of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 3 is a partial cross-sectional structural schematic view of the present invention;
in the figure: 1. a base plate; 2. a screw 1; 3. a screw 2; 4. a square coil; 5. a center adjuster; 6. an object stage; 7. a square coil position adjuster; 8. a handle knob; 9. a movable connecting sleeve; 10. an anti-slip layer; 11. a clamping block; 12. fixing the side plate; 13. adjusting the screw rod; 14. a rack; 15. a gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a giant magnetoresistance sensor performance testing device comprises a bottom plate 1, a screw 2, a screw 3, a square coil 4, a center regulator 5, an objective table 6, a square coil position regulator 7, a handle knob 8, a movable connecting sleeve 9, an anti-skid layer 10, a clamping block 11, a fixed side plate 12, an adjusting screw rod 13, a rack 14 and a gear 15. The middle part of bottom plate 1 is provided with U type groove and passes through screw 2 installation rack 14, and the middle part left and right sides of bottom plate 1 sets up dovetail cooperation regulator 5, 7, central regulator 5 is connected with objective table 6 through adjusting screw, and the both sides of objective table 6 are fixed with fixed curb plate 12, fixed curb plate 12 connects adjusting screw 13, and adjusting screw 13 passes through movable connecting sleeve 9 and skid resistant course 10, clamp splice 11 constitutes the active structure, handle knob 8 connecting gear 15 that 5 outside settled of central regulator and the rack 14 meshing of installing at bottom plate 1 through screw 2 constitute the active structure, can be convenient for adjust the position of objective table 6 through this regulator.
The square coil 4 is connected with the upper surface of the square coil position regulator 7 through the screw 3, the square coil 4 is packaged to avoid the phenomenon that dust adheres to the outer surface to influence the performance test result of the magnetic field on the giant magneto-resistance sensor, the effectiveness of the performance test of the giant magneto-resistance sensor is improved, dovetail grooves are formed on two sides of the lower end of the square coil position regulator 7 to be matched with the bottom plate 1 conveniently, a mechanism for connecting a handle knob 8 with a gear 15 is arranged on the outer side, the gear 15 and a rack 14 are meshed at the bottom to form a movable structure to form the square coil position regulator 7, the regulator is symmetrically arranged with 4 groups along the center of the bottom plate, so that each group can move transversely in the bottom plate 1 under the action of the handle knob 8, the distance between the square coils 4 can be adjusted according to the actual test condition, therefore, the effect of changing the magnetic field is achieved, and the actual application range of the giant magnetoresistance sensor performance testing device is widened.
One end of an adjusting screw 13 is connected with a movable connecting sleeve 9, the other side of the movable connecting sleeve 9 is fixed with a clamping block 11, the other side of the clamping block 11 is provided with an anti-skid layer 10, the inner side of a fixed side plate 12 is provided with an objective table 6, the adjusting screw 13 penetrates through the inner side of the fixed side plate 12, the clamping block 11 forms a movable structure through the movable connecting sleeve 9 and the fixed side plate 12, the anti-skid layer 10 and the clamping block 11 are distributed in a parallel shape, the anti-skid layer 10 is fixedly connected with the clamping block 11, the adjusting screw 13 and the clamping block 11 are movably connected through the movable connecting sleeve 9, so that in the process of adjusting the distance between the clamping blocks 10 by rotating the adjusting screw 13, the clamping block 11 cannot rotate along with the rotation of the adjusting screw 13, the effect of fixing the giant magneto-resistance sensor is ensured, the anti-skid layer 10 arranged on one side of the clamping block 11 is matched, and, meanwhile, the good protection effect is achieved.
When the device is used, for the performance testing device of the giant magneto-resistance sensor, firstly, the giant magneto-resistance sensor is fixed through the clamping block 11, the movable connecting sleeve 9 enables the adjusting screw 13 and the clamping block 11 to achieve the effect of movable connection, in the process of rotating the adjusting screw 13 to adjust the distance between the clamping blocks 11, the clamping block 11 cannot rotate along with the rotation of the adjusting screw 13, the effect of fixing the giant magneto-resistance sensor is ensured, the antiskid layer 10 arranged on one side of the clamping block 11 is matched to further ensure the firmness of fixing the giant magneto-resistance sensor, meanwhile, the good protection effect is achieved, the rack 14 arranged in the middle of the bottom plate 1 is meshed with the central adjuster 5, the objective table 6 can transversely move through the action of the handle knob 8 on the outer side of the central adjuster 5, the distance between the square coils 4 can be adjusted through the square coil position adjuster 7 according to the actual testing condition, therefore, the effect of changing the magnetic field is achieved, the actual application range of the giant magnetoresistance sensor performance testing device is expanded, the giant magnetoresistance sensor and the square coil 4 are respectively electrified, the performance of the giant magnetoresistance sensor is tested, and the using process of the whole giant magnetoresistance sensor performance testing device is completed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A giant magnetoresistance sensor performance testing device is characterized in that: including bottom plate, objective table, square coil, central authorities' regulator and square coil position control ware, its characterized in that: the utility model discloses a square coil position regulator, including base dovetail, objective table, clamping mechanism, clamp splice, square coil position regulator, U type groove is opened in the bottom plate middle part and is convenient for install the rack, and middle side is opened there is the dovetail, the objective table passes through the screw thread to be connected with base dovetail center regulator, and there is clamping mechanism the objective table upper end, through the tight test piece of rotatory handle operation clamp, there is the skid resistant course clamp splice front end, square coil passes through the screw connection and installs on square coil position regulator, U type groove is opened to square coil position regulator upper end, and the handle knob.
2. The giant magnetoresistance sensor performance test apparatus according to claim 1, wherein: the square coils are symmetrically distributed along the vertical central axis of the objective table, and the square coils are connected with the square coil position regulator through screws to form a movable structure.
3. The giant magnetoresistance sensor performance test apparatus according to claim 1, wherein: the lower end of the objective table is provided with an adjusting screw rod which is connected with a central adjuster and can longitudinally adjust the position of the objective table, and both sides of the upper end of the objective table are provided with threaded connecting holes which are connected with a giant magneto-resistance sensor clamping device.
4. The giant magnetoresistance sensor performance test apparatus according to claim 1, wherein: fixed side plates are arranged on two sides of the objective table, the front end of the adjusting screw rod is sleeved with the movable connecting piece, and the anti-skid layer and the clamping block are arranged on the movable connecting piece to form a movable structure.
5. The giant magnetoresistance sensor performance test apparatus according to claim 1, wherein: the manual knob is installed on the outer side of the central regulator, and the internal gear is matched with the base rack to form a movable structure capable of adjusting the position.
6. The giant magnetoresistance sensor performance test apparatus according to claim 1, wherein: the upper surface of the square coil position regulator is provided with a U-shaped groove, threaded holes are formed in two sides of the U-shaped groove, the square coil is installed on the surface of the square coil through screws, the gear is connected to the front end of the handle, the gear is connected to the inner portion of the handle, and the lower side of the square coil is meshed with the rack in a matched mode to form a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011084464.7A CN112213677A (en) | 2020-10-12 | 2020-10-12 | Giant magnetoresistance sensor performance testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011084464.7A CN112213677A (en) | 2020-10-12 | 2020-10-12 | Giant magnetoresistance sensor performance testing device |
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| CN112213677A true CN112213677A (en) | 2021-01-12 |
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| CN202011084464.7A Pending CN112213677A (en) | 2020-10-12 | 2020-10-12 | Giant magnetoresistance sensor performance testing device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201387681Y (en) * | 2008-12-11 | 2010-01-20 | 浙江天煌科技实业有限公司 | Helmholtz coil magnetic field measuring experimental apparatus |
| CN208060688U (en) * | 2018-04-16 | 2018-11-06 | 徐靖宇 | It is a kind of can pin-point reading Helmholtz coil magnetic field measuring device |
| CN110082668A (en) * | 2019-05-23 | 2019-08-02 | 南京师范大学泰州学院 | A kind of component-fixing device for Helmholtz coil measurement of magnetic field |
-
2020
- 2020-10-12 CN CN202011084464.7A patent/CN112213677A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201387681Y (en) * | 2008-12-11 | 2010-01-20 | 浙江天煌科技实业有限公司 | Helmholtz coil magnetic field measuring experimental apparatus |
| CN208060688U (en) * | 2018-04-16 | 2018-11-06 | 徐靖宇 | It is a kind of can pin-point reading Helmholtz coil magnetic field measuring device |
| CN110082668A (en) * | 2019-05-23 | 2019-08-02 | 南京师范大学泰州学院 | A kind of component-fixing device for Helmholtz coil measurement of magnetic field |
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Application publication date: 20210112 |
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