CN218383253U - Magnetic field distribution measuring device for measuring transcranial magnetic stimulation coil - Google Patents
Magnetic field distribution measuring device for measuring transcranial magnetic stimulation coil Download PDFInfo
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- CN218383253U CN218383253U CN202223071771.9U CN202223071771U CN218383253U CN 218383253 U CN218383253 U CN 218383253U CN 202223071771 U CN202223071771 U CN 202223071771U CN 218383253 U CN218383253 U CN 218383253U
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Abstract
The utility model relates to a magnetic field distribution measures technical field, especially relates to a magnetic field distribution measuring device for measuring transcranial magnetic stimulation coil. The device comprises a fluxmeter, a positioning mechanism, a z-axis stepping mechanism, an x-axis stepping mechanism and a y-axis stepping mechanism; the z-axis stepping mechanism comprises a lifting platform and a z-axis driving mechanism, and the z-axis driving mechanism is arranged at the bottom of the lifting platform; the y-axis stepping mechanism is arranged on the top surface of the lifting platform, the x-axis stepping mechanism is connected with the y-axis stepping mechanism, and the y-axis stepping mechanism is used for driving the x-axis stepping mechanism to move along the y axis; the fluxmeter comprises an induction coil, wherein the induction coil is arranged on an x-axis stepping mechanism, and the x-axis stepping mechanism is used for driving the induction coil to move along an x axis; the top of the positioning mechanism is used for positioning the transcranial magnetic stimulation coil, and the lifting table is positioned below the transcranial magnetic stimulation coil. The device can improve the efficiency of magnetic field distribution measurement, reduces the work load of measurement to a great extent.
Description
Technical Field
The utility model relates to a magnetic field distribution measures technical field, especially relates to a magnetic field distribution measuring device for measuring transcranial magnetic stimulation coil.
Background
Transcranial magnetic stimulation is a magnetic stimulation method for a nervous system, and compared with other nerve stimulation modes such as nerve electrical stimulation and the like, the magnetic stimulation method has the advantages of no pain, no damage, simplicity and convenience in operation and the like. It is widely applied to basic scientific research of psychoneurotic disorder as a nerve intervention technology. The principle is that electromagnetic pulses are output through a coil to generate an induction magnetic field, the induction magnetic field acts on the brain and generates induction current in the brain, and therefore the induction magnetic field acts on a stimulation target or a distant cortex with synaptic connection, and brain nerve functional changes are caused.
The transcranial magnetic stimulation system stores electric energy into a capacitor through a direct-current high-voltage source, and then discharges electricity to a coil to generate pulse current by using a silicon controlled rectifier as an electronic switch, so that a strong pulse magnetic field is generated. The pulse magnetic field is characterized by larger magnetic field intensity and belongs to the field of strong magnetic field; and the pulse duration is short, being a rapidly changing magnetic field over time. The invention discloses a method for determining transcranial magnetic stimulation amount based on distance measurement, and the method is disclosed as CN104001266A, wherein in the step of measuring the magnetic field distribution of a stimulation coil and drawing a curve of the magnetic field distribution, multi-point measurement is carried out in a measuring range in a stepping mode, and the curve of the magnetic field distribution is drawn by curve fitting to measure the magnetic field distribution. In the prior art, regarding a device for measuring magnetic field distribution of a transcranial magnetic stimulation coil, as disclosed in chinese utility model patent with publication number CN201732156U entitled "measuring device for three-dimensional magnetic field spatial distribution of transcranial magnetic stimulation coil", fixing holes are distributed on a coordinate positioning plate, a detection coil holder is positioned in the fixing holes by fixing screws, stepping of the detection coil on x axis and y axis is realized by adjusting the mounting position of the detection coil holder on the coordinate positioning plate, and stepping of the detection coil on z axis is realized by adjusting the mounting height of the coordinate positioning plate. The drawing of the magnetic field distribution curve can be completed based on a large number of measuring points, long time is needed when the measuring is carried out, particularly, the detection coil holder is positioned in a fixed hole by a fixing screw in a positioning mode, the detection coil holder needs to be disassembled and assembled once on a coordinate positioning plate when the detection coil is stepped once, the workload is large, and the measuring efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a magnetic field distribution measuring device for measuring transcranial magnetic stimulation coil is favorable to improving the efficiency that magnetic field distribution was measured, reduces measuring work load at to a great extent.
To achieve the purpose, the utility model adopts the following technical proposal:
a magnetic field distribution measuring device for measuring a transcranial magnetic stimulation coil comprises a magnetic flowmeter, a positioning mechanism, a z-axis stepping mechanism, an x-axis stepping mechanism and a y-axis stepping mechanism;
the z-axis stepping mechanism comprises a lifting table and a z-axis driving mechanism, and the z-axis driving mechanism is arranged at the bottom of the lifting table;
the y-axis stepping mechanism is mounted on the top surface of the lifting table, the x-axis stepping mechanism is connected with the y-axis stepping mechanism, and the y-axis stepping mechanism is used for driving the x-axis stepping mechanism to move along the y axis;
the magnetic flowmeter comprises an induction coil, the induction coil is arranged on the x-axis stepping mechanism, and the x-axis stepping mechanism is used for driving the induction coil to move along an x axis;
the top of the positioning mechanism is used for positioning the transcranial magnetic stimulation coil, and the lifting table is positioned below the transcranial magnetic stimulation coil.
Furthermore, the positioning mechanism comprises two positioning plates which are in mirror symmetry, positioning grooves are formed in the tops of the two positioning plates, and the positioning grooves of the two positioning plates are used for positioning two sides of the transcranial magnetic stimulation coil;
the lifting platform is positioned between the two positioning plates.
Furthermore, the side part of the lifting platform is in sliding fit with the positioning plate.
Furthermore, the z-axis driving mechanism comprises a z-axis motor, a z-axis screw rod, a threaded sleeve and a sleeve;
the output end of the z-axis motor is in transmission connection with the bottom end of the z-axis screw rod, the threaded sleeve is in threaded connection with the z-axis screw rod, the outer wall of the threaded sleeve is fixedly connected with the sleeve, and the top end of the sleeve is fixedly connected with the bottom surface of the lifting table;
the z-axis screw rod, the threaded sleeve and the sleeve are coaxially arranged.
Furthermore, the y-axis stepping mechanism comprises a y-axis motor, a y-axis screw rod, a y-axis guide rail and a displacement platform;
the y-axis guide rail is fixed on the top surface of the lifting table, and the displacement platform is in sliding fit with the y-axis guide rail;
the y-axis screw rod is in transmission connection with the y-axis motor, and the displacement platform is in transmission connection with the y-axis screw rod.
Furthermore, the x-axis stepping mechanism comprises an installation block, a guide rod, an x-axis lead screw and an x-axis motor;
the guide rod and the x-axis screw rod are parallelly arranged on the displacement platform, one end of the x-axis screw rod is in driving connection with an x-axis motor, the guide rod and the x-axis screw rod are sleeved with the mounting block, and the mounting block is in threaded fit with the x-axis screw rod;
the induction coil is installed on the top surface of the installation block.
Further, the moving range of the mounting block along the x axis is larger than the length of the positioning plate along the x axis;
the moving range of the mounting block along the y axis is larger than the distance between the positioning grooves of the two positioning plates along the y axis.
Furthermore, the positioning mechanism is made of a non-magnetic material;
the space formed by the top surface of the lifting table and the two positioning plates is a measurement space, and the x-axis motor, the y-axis motor and the z-axis motor are all located outside the measurement space.
Furthermore, a horizontal plane zero point positioner is arranged on the top surface of the lifting platform, and a z-axis zero point positioner is arranged on the side part of the positioning mechanism;
the x-axis stepping mechanism and the y-axis stepping mechanism are respectively electrically connected with the horizontal plane zero point positioner, and the z-axis driving mechanism is electrically connected with the z-axis zero point positioner.
Further, the x-axis motor, the y-axis motor and the z-axis motor are all servo motors.
The utility model provides a technical scheme can include following beneficial effect:
the utility model discloses a magnetic field distribution measuring device sets up step mechanism at x axle, y axle and z axle respectively, realizes that induction coil is step-by-step at x axle, y axle and z axle, can accomplish magnetic field distribution fast and measure, has improved measuring efficiency at to a great extent. In addition, the magnetic field distribution measuring device can also control the stepping speed and the stepping sequence of the induction coil on the x axis, the y axis and the z axis through the control device, automatic magnetic field distribution measurement is realized, the stepping of the induction coil on the x axis, the y axis and the z axis can be completed quickly, the measuring efficiency is improved to a great extent, and the manual workload is greatly saved.
Drawings
Fig. 1 is a schematic structural diagram of a magnetic field distribution measuring apparatus according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the magnetic field distribution measuring apparatus shown in FIG. 1 along the x-axis;
fig. 3 is a partial cross-sectional view of the magnetic field distribution measuring apparatus of fig. 1 along the y-axis.
The device comprises an induction coil 1, a positioning mechanism 2, a z-axis zero point positioner 21, a positioning plate 22, a positioning groove 23, an x-axis stepping mechanism 3, a mounting block 31, a guide rod 32, an x-axis screw rod 33, an x-axis motor 34, a y-axis stepping mechanism 4, a y-axis motor 41, a y-axis screw rod 42, a y-axis guide rail 43, a displacement platform 44, a z-axis stepping mechanism 5, a lifting table 51, a z-axis driving mechanism 52, a z-axis motor 521, a z-axis screw rod 522, a threaded sleeve 523, a sleeve 524, a horizontal plane zero point positioner 53 and a transcranial magnetic stimulation coil 01.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In addition, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature for distinguishing between descriptive features, non-sequential, and non-trivial.
In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A magnetic field distribution measuring apparatus for measuring a transcranial magnetic stimulation coil according to an embodiment of the present invention will be described with reference to fig. 1 to 3.
The magnetic field distribution measuring device for measuring the transcranial magnetic stimulation coil comprises a fluxmeter, a positioning mechanism 2, a z-axis stepping mechanism 5, an x-axis stepping mechanism 3 and a y-axis stepping mechanism 4;
the z-axis stepping mechanism 5 comprises a lifting platform 51 and a z-axis driving mechanism 52, wherein the z-axis driving mechanism 52 is arranged at the bottom of the lifting platform 51;
the y-axis stepping mechanism 4 is arranged on the top surface of the lifting platform 51, the x-axis stepping mechanism 3 is connected with the y-axis stepping mechanism 4, and the y-axis stepping mechanism 4 is used for driving the x-axis stepping mechanism 3 to move along the y axis;
the magnetic flowmeter comprises an induction coil 1, wherein the induction coil 1 is arranged on an x-axis stepping mechanism 3, and the x-axis stepping mechanism 3 is used for driving the induction coil 1 to move along the x axis;
the top of the positioning mechanism 2 is used for positioning the transcranial magnetic stimulation coil 01, and the lifting platform 51 is positioned below the transcranial magnetic stimulation coil 01.
The utility model discloses a magnetic field distribution measuring device sets up step mechanism at x axle, y axle and z axle respectively, realizes that induction coil 1 is at the step-by-step of x axle, y axle and z axle, can accomplish magnetic field distribution fast and measure, has improved measuring efficiency at to a great extent. In addition, the magnetic field distribution measuring device can also control the stepping speed and the stepping sequence of the induction coil 1 in the x axis, the y axis and the z axis through the control device, so that automatic magnetic field distribution measurement is realized, and the manual workload is greatly saved. The magnetic field distribution diagram is drawn by the magnetic field data obtained by the induction coil of the magnetic flowmeter.
Further, the positioning mechanism 2 comprises two positioning plates 22 which are mirror-symmetrical, the top of the positioning plate 22 is provided with a positioning groove 23, and the positioning grooves 23 of the two positioning plates 22 are used for positioning two sides of the transcranial magnetic stimulation coil 01; the lifting platform 51 is located between the two positioning plates 22. Therefore, the lifting platform 51 is positioned right below the transcranial magnetic stimulation coil 01, a measurement space is formed between the top surface of the lifting platform 51 and the two positioning plates 22, and the induction coil 1 can move in the measurement space under the driving of the stepping mechanisms of the x axis, the y axis and the z axis, so that the magnetic field distribution measurement of the transcranial magnetic stimulation coil 01 is completed.
The side part of the lifting platform 51 is in sliding fit with the positioning plate 22 to realize the motion guide of the lifting platform 51. Specifically, the side of the lifting platform 51 is provided with a groove adapted to the width of the positioning plate 22, and the positioning plate 22 is inserted into the groove and is in sliding fit with the inner wall of the groove, so that the structure of the detection device is simplified to a great extent. In addition, the matching precision with the positioning plate 22 can be improved by attaching the wear-resistant sheet on the inner wall of the groove.
The z-axis driving mechanism 52 is used for driving the lifting platform 51 to ascend in a stepping mode in the z-axis direction, so that the induction coil 1 can step in the z-axis direction, and the stepping distance is 0.5-1cm. The z-axis driving mechanism 52 comprises a z-axis motor 521, a z-axis screw rod 522, a screw sleeve 523 and a sleeve 524; the output end of the z-axis motor 521 is in transmission connection with the bottom end of the z-axis screw rod 522, the threaded sleeve 523 is in threaded connection with the z-axis screw rod 522, the outer wall of the threaded sleeve 523 is fixedly connected with the sleeve 524, and the top end of the sleeve 524 is fixedly connected with the bottom surface of the lifting table 51; the z-axis lead screw 522, the threaded sleeve 523, and the sleeve 524 are coaxially disposed. The z-axis lead screw 522, the threaded sleeve 523 and the sleeve 524 form a telescopic structure, and when the z-axis motor 521 drives the z-axis lead screw 522 to rotate, based on the threaded matching between the threaded sleeve 523 and the z-axis lead screw 522, the threaded sleeve 523 moves along the z-axis lead screw 522, so as to drive the sleeve 524 to ascend or descend. The Z-axis motor 521 is fixed to the frame or the table, and the bottom ends of the two positioning plates 22 are also fixed to the frame or the table. In addition, the z-axis zero-point positioner 21 is electrically connected to the z-axis motor 521, and when the lift table 51 reaches the z-axis zero point, the z-axis zero-point positioner 21 transmits an arrival signal to the z-axis motor 521, and the z-axis motor 521 is stopped.
The y-axis stepping mechanism 4 is used for driving the x-axis stepping mechanism 3 to move along the y-axis in a stepping mode, so that the induction coil 1 can step on the y-axis, and the stepping distance is 0.5-1cm. The y-axis stepping mechanism 4 comprises a y-axis motor 41, a y-axis lead screw 42, a y-axis guide rail 43 and a displacement platform 44; the y-axis guide rail 43 is fixed on the top surface of the lifting table 51, and the displacement platform 44 is in sliding fit with the y-axis guide rail 43; the y-axis screw rod 42 is in transmission connection with the y-axis motor 41, and the displacement platform 44 is in transmission connection with the y-axis screw rod 42. The y-axis motor 41 can drive the displacement platform 44 to move along the y-axis through the y-axis lead screw. In order to further ensure the motion stability of the displacement platform 44, two y-axis guide rails 43 are fixed on the top surface of the lifting platform 51, and a groove in sliding fit with the y-axis guide rails 43 is formed in the bottom surface of the displacement platform 44. It should be noted that the displacement platform 44 is long, and the y-axis motor 41 and the y-axis lead screw 42 are respectively disposed at two ends of the displacement platform 44, so that the two y-axis motors 41 are synchronized to realize the stable movement of the displacement platform 44.
The x-axis stepping mechanism 3 is used for driving the mounting block 31 to move along the x-axis in a stepping mode, so that the stepping of the induction coil 1 on the x-axis is achieved, and the stepping distance is 0.5-1cm. The x-axis stepping mechanism 3 comprises a mounting block 31, a guide rod 32, an x-axis screw rod 33 and an x-axis motor 34; the guide rod 32 and the x-axis screw rod 33 are arranged on the displacement platform 44 in parallel, one end of the x-axis screw rod 33 is in driving connection with the x-axis motor 34, the guide rod 32 and the x-axis screw rod 33 are sleeved with the mounting block 31, and the mounting block 31 is in threaded fit with the x-axis screw rod 33; the induction coil 1 is mounted on the top surface of the mounting block 31. In other embodiments, the height of the entire drive mechanism can be reduced by using x-axis guides instead of the guide rods 32 for guidance.
It should be noted that, before the measurement is performed, the induction coil 1 needs to be located at the zero point of the coordinates to improve the measurement accuracy and facilitate drawing the magnetic field distribution diagram, and optionally, the induction coil 1 is moved to the zero point manually or automatically. Specifically, as shown in fig. 3, in the structure that the induction coil 1 is automatically moved to the zero point of the coordinate, the top surface of the lifting table 51 is provided with a horizontal zero point positioner 53, and the side part of the positioning mechanism 2 is provided with a z-axis zero point positioner 21; the x-axis stepping mechanism 3 and the y-axis stepping mechanism 4 are electrically connected to the horizontal zero-point positioner 53, respectively, and the z-axis driving mechanism 52 is electrically connected to the z-axis zero-point positioner 21. Horizontal plane zero point locator 53 adopts photoelectric sensor, and positioning hole has all been seted up to displacement platform 44 and installation piece 31, and when displacement platform 44 and installation piece 31 all moved to photoelectric sensor not sheltered from the state, induction coil 1 was located the zero point of horizontal plane, the zero point of x axle and y axle promptly. The z-axis zero-point positioner 21 is a position sensor, and when the lift table 51 touches the position sensor, the induction coil 1 is located at the z-axis zero point. It can be understood that the positioning through holes are staggered with the induction coil 1 to prevent the induction coil 1 from interfering with the positioning.
The utility model discloses a step mechanism of x axle, y axle and z axle all adopts the drive mode of motor lead screw, has very high drive accuracy. In some embodiments, the x-axis, y-axis and z-axis stepping mechanism is not only used to drive the stepping of the induction coil 1 in the x-axis, y-axis and z-axis, but also to drive the initial positioning of the induction coil 1 and to drive the induction coil 1 to move to the initial position after the measurement is completed. Moreover, the x-axis motor 34, the y-axis motor 41 and the z-axis motor 521 are all servo motors, so as to achieve a more precise driving effect.
In order to have a larger measurement range and ensure that the magnetic field distribution of the transcranial magnetic stimulation coil 01 can be measured in a sufficient range, further, the moving range of the mounting block 31 along the x axis is larger than the length of the positioning plate 22 along the x axis; the moving range of the mounting block 31 along the y-axis is larger than the distance between the positioning grooves 23 of the two positioning plates 22 along the y-axis. It should be noted that the space between the top surface of the lifting table 51 and the two positioning plates is a measurement space, so that the moving range of the mounting block 31 exceeds the measurement space, that is, the moving range of the induction coil 1 can be ensured to cover the whole measurement space, which is beneficial to obtaining a high-quality magnetic field distribution curve.
It should be noted that the z-axis cross section of the positioning plates is in an inverted L shape, so that the moving range of the mounting block 31 along the y-axis is larger than the distance between the positioning grooves 23 of the two positioning plates 22 along the y-axis.
In order to ensure the accuracy of the measured data, the positioning mechanism 2 is made of a non-magnetic material; the space formed by the top surface of the lifting platform 51 and the two positioning plates 22 is a measuring space, and the x-axis motor 34, the y-axis motor 41 and the z-axis motor 521 are all positioned outside the measuring space. Non-magnetic materials are materials that are not magnetically permeable and do not affect the magnetic field distribution. Most of the motor materials are metal, and the x-axis motor 34, the y-axis motor 41 and the z-axis motor 521 are located outside the measuring space, so that the measuring accuracy can be guaranteed. In addition, the x-axis stepping mechanism 3, the y-axis stepping mechanism 4, and the z-axis stepping mechanism 5 are made of nonmagnetic materials other than the motor. Quartz, polytetrafluoroethylene, organic glass are non-magnetic material, in actual production, select suitable non-magnetic material according to the shape and the intensity requirement to the part.
Other constructions and operation of a magnetic field distribution measuring apparatus for measuring a transcranial magnetic stimulation coil according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A magnetic field distribution measuring device for measuring a transcranial magnetic stimulation coil is characterized by comprising a fluxmeter, a positioning mechanism, a z-axis stepping mechanism, an x-axis stepping mechanism and a y-axis stepping mechanism;
the z-axis stepping mechanism comprises a lifting platform and a z-axis driving mechanism, and the z-axis driving mechanism is arranged at the bottom of the lifting platform;
the y-axis stepping mechanism is mounted on the top surface of the lifting table, the x-axis stepping mechanism is connected with the y-axis stepping mechanism, and the y-axis stepping mechanism is used for driving the x-axis stepping mechanism to move along the y axis;
the magnetic flowmeter comprises an induction coil, the induction coil is arranged on the x-axis stepping mechanism, and the x-axis stepping mechanism is used for driving the induction coil to move along an x axis;
the top of the positioning mechanism is used for positioning the transcranial magnetic stimulation coil, and the lifting table is positioned below the transcranial magnetic stimulation coil.
2. The device for measuring the magnetic field distribution of a transcranial magnetic stimulation coil according to claim 1, wherein the positioning mechanism comprises two positioning plates which are mirror-symmetrical, positioning grooves are formed in the tops of the two positioning plates, and the positioning grooves of the two positioning plates are used for positioning two sides of the transcranial magnetic stimulation coil;
the lifting platform is positioned between the two positioning plates.
3. The device for measuring the magnetic field distribution of a transcranial magnetic stimulation coil according to claim 2, wherein the side portion of the lifting table is in sliding fit with the positioning plate.
4. The magnetic field distribution measurement device for measuring a transcranial magnetic stimulation coil according to claim 2, wherein the z-axis drive mechanism includes a z-axis motor, a z-axis lead screw, a threaded sleeve and a sleeve;
the output end of the z-axis motor is in transmission connection with the bottom end of the z-axis screw rod, the threaded sleeve is in threaded connection with the z-axis screw rod, the outer wall of the threaded sleeve is fixedly connected with the sleeve, and the top end of the sleeve is fixedly connected with the bottom surface of the lifting table;
the z-axis screw rod, the threaded sleeve and the sleeve are coaxially arranged.
5. The magnetic field distribution measurement device for measuring a transcranial magnetic stimulation coil according to claim 4, wherein the y-axis stepping mechanism comprises a y-axis motor, a y-axis lead screw, a y-axis guide rail and a displacement platform;
the y-axis guide rail is fixed on the top surface of the lifting table, and the displacement platform is in sliding fit with the y-axis guide rail;
the y-axis screw rod is in transmission connection with the y-axis motor, and the displacement platform is in transmission connection with the y-axis screw rod.
6. The magnetic field distribution measurement device for measuring a transcranial magnetic stimulation coil according to claim 5, wherein the x-axis stepping mechanism comprises a mounting block, a guide rod, an x-axis lead screw and an x-axis motor;
the guide rod and the x-axis screw rod are parallelly arranged on the displacement platform, one end of the x-axis screw rod is in driving connection with an x-axis motor, the guide rod and the x-axis screw rod are sleeved with the mounting block, and the mounting block is in threaded fit with the x-axis screw rod;
the induction coil is installed on the top surface of the installation block.
7. The apparatus according to claim 6, wherein the mounting block has a greater range of movement along the x-axis than the length of the positioning plate along the x-axis;
the moving range of the mounting block along the y axis is larger than the distance between the positioning grooves of the two positioning plates along the y axis.
8. The device for measuring the magnetic field distribution of a transcranial magnetic stimulation coil according to claim 6, wherein the positioning mechanism is made of a non-magnetic material;
the materials of other parts except the x-axis motor, the y-axis motor and the z-axis motor in the z-axis stepping mechanism, the x-axis stepping mechanism and the y-axis stepping mechanism are all non-magnetic materials;
the space formed by the top surface of the lifting table and the two positioning plates is a measurement space, and the x-axis motor, the y-axis motor and the z-axis motor are all located outside the measurement space.
9. The device for measuring the magnetic field distribution of a transcranial magnetic stimulation coil according to claim 6, wherein a horizontal zero locator is arranged on the top surface of the lifting table, and a z-axis zero locator is arranged on the side portion of the positioning plate;
the x-axis stepping mechanism and the y-axis stepping mechanism are respectively electrically connected with the horizontal plane zero point positioner, and the z-axis driving mechanism is electrically connected with the z-axis zero point positioner.
10. The magnetic field distribution measurement device for measuring a transcranial magnetic stimulation coil according to claim 6, wherein the x-axis motor, the y-axis motor and the z-axis motor are all servo motors.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117269856A (en) * | 2023-09-28 | 2023-12-22 | 常州利明屏蔽有限公司 | Indoor magnetic field evaluation measurement and rapid adjustment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117269856A (en) * | 2023-09-28 | 2023-12-22 | 常州利明屏蔽有限公司 | Indoor magnetic field evaluation measurement and rapid adjustment method |
| CN117269856B (en) * | 2023-09-28 | 2024-03-01 | 常州利明屏蔽有限公司 | Indoor magnetic field evaluation measurement and rapid adjustment method |
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