CN113418859B - Two-dimensional sample switching system - Google Patents
Two-dimensional sample switching system Download PDFInfo
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- CN113418859B CN113418859B CN202110677029.3A CN202110677029A CN113418859B CN 113418859 B CN113418859 B CN 113418859B CN 202110677029 A CN202110677029 A CN 202110677029A CN 113418859 B CN113418859 B CN 113418859B
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The application provides a two-dimensional sample switching system, includes: a shielding box body; the shielding box cover is arranged on one side of the shielding box body and is provided with an electromagnetic radiation port; the sample mounting plate is arranged in the shielding box body and is provided with a plurality of sample mounting areas; the driving mechanism is arranged in the shielding box body and used for driving the sample mounting plate to move along a first direction, a second direction and a third direction so as to enable the electromagnetic radiation port to be aligned with any sample mounting area; the first direction, the second direction and the third direction are perpendicular to each other. The sample mounting plate is driven by the driving mechanism to move along the first direction, the second direction and the third direction, so that the test piece samples mounted on the sample mounting areas can be switched, the test piece samples do not need to be manually replaced, and different electromagnetic wave powers required by tests of different test piece samples can be considered; meanwhile, the shielding box body can shield the outside, reduce electromagnetic waves coupled into the shielding box body, and is favorable for protecting equipment in the shielding box body.
Description
Technical Field
The application relates to the technical field of ground special tests, in particular to a two-dimensional sample switching system.
Background
The surface of the spacecraft is generally paved with a large number of multilayer heat insulation assemblies (MLI), the multilayer heat insulation assemblies generally consist of a plurality of layers of aluminizers and spacing layers (generally, 5-20 layers), wherein the base material of the aluminizer at the inner part is generally a polyester film, the spacing layer is generally a polyester wire, a flame-retardant wire and the like, the base material of the outer film is generally a polyimide material, and meanwhile, in order to enhance the surface adaptability of the spacecraft, the multilayer heat insulation assemblies adopting the processes of surface carburization, ITO plating and the like are also provided. Under the coupling action of vacuum and strong electromagnetic fields, secondary electron multiplication effect, low-pressure discharge and other phenomena can occur on the surface of the multilayer heat insulation assembly, so that the surface and even the interior of the multilayer heat insulation assembly are damaged, the thermal control performance and the shielding performance of a spacecraft can be adversely affected, and even the internal materials are further damaged under the action of the strong field. The damage mechanism is very complex, and the coupling effect of micro discharge and low-pressure discharge often exists. In addition, similar damage phenomena may occur with other overlay materials on the surface of the spacecraft. Therefore, in order to evaluate the damage mechanism of the spacecraft surface material under the coupling action of vacuum and strong field, the test is required to be carried out in a ground simulation environment.
Because the starting process (vacuum background establishment) of the equipment can often reach hours, the effect objects are difficult to manually replace in the test process, different electromagnetic wave powers required by different effect object tests are difficult to consider when a plurality of effect objects are placed simultaneously, and when the traditional vacuum motor is used for transmission, the corresponding equipment is difficult to survive in a complex electromagnetic environment. Therefore, the design and the invention of the two-dimensional sample switching system which can be used in the vacuum and strong electromagnetic field environment simulated on the ground have positive practical significance.
Disclosure of Invention
It is an object of the present application to provide a two-dimensional sample switching system that addresses the above problems.
The application provides a two-dimensional sample switching system, includes:
a shielding box body;
the shielding box cover is arranged on one side of the shielding box body and is provided with an electromagnetic radiation port;
the sample mounting plate is arranged in the shielding box body and is provided with a plurality of sample mounting areas;
the driving mechanism is arranged in the shielding box body and used for driving the sample mounting plate to move along a first direction, a second direction and a third direction so that the electromagnetic radiation port can be aligned with any one sample mounting area; the first direction, the second direction and the third direction are perpendicular to each other.
According to an aspect provided by some embodiments of the present application, the driving mechanism includes: a first drive assembly, a second drive assembly and a third drive assembly;
the sample mounting plate is mounted on the third driving assembly, and the third driving assembly is used for driving the sample mounting plate to move along the third direction;
the third driving assembly is mounted on the second driving assembly, and the second driving assembly is used for driving the third driving assembly to move along the second direction;
the second driving assembly is mounted on the first driving assembly, and the first driving assembly is used for driving the second driving assembly to move along the first direction.
According to an aspect provided by some embodiments of the present application, the first driving assembly includes: the device comprises a first moving platform, a first optical axis, a first lead screw and a first driving motor, wherein the first driving motor is used for driving the first lead screw to rotate; the first optical axis is fixedly arranged in the shielding box body and is parallel to the first direction; the first lead screw is rotatably arranged in the shielding box body and is parallel to the first direction; the first moving platform is in threaded connection with the first lead screw and is in sliding connection with the first optical axis.
According to an aspect provided by some embodiments of the present application, the second driving assembly includes: the second moving platform, the second optical axis, the second lead screw and a second driving motor are used for driving the second lead screw to rotate; the second optical axis is fixedly arranged on the first moving platform and is parallel to the second direction; the second lead screw is rotatably arranged on the first moving platform and is parallel to the second direction; and the second moving platform is in threaded connection with the second lead screw and is in sliding connection with the second optical axis.
According to an aspect provided by some embodiments of the present application, the third driving assembly includes: the third optical axis, the third lead screw and a third driving motor are used for driving the third lead screw to rotate; the third optical axis is fixedly arranged on the second mobile platform and is parallel to the third direction; the third lead screw is rotatably arranged on the second moving platform and is parallel to the third direction; the sample mounting plate is in threaded connection with the third lead screw and is in sliding connection with the third optical axis.
According to the technical solution provided by some embodiments of the present application, the first driving assembly further includes a first limit switch disposed in the first direction; the first limit switch is used for limiting the moving range of the first moving platform; the second drive assembly further comprises a second limit switch arranged in the second direction; the second limit switch is used for limiting the moving range of the second moving platform; the third driving assembly further comprises a third limit switch arranged in the third direction; the third limit switch is used for limiting the movement range of the sample mounting plate.
According to the technical scheme provided by some embodiments of the application, the sample mounting plate comprises a mounting plate body and a plurality of first shielding reeds arranged on one side, close to the shielding box cover, of the mounting plate body; all the first shielding reeds divide the surface of the mounting plate body into a plurality of sample mounting areas; all the sample mounting areas are distributed in a longitudinal and transverse mode to form a rectangular array.
According to the technical scheme provided by some embodiments of the application, the size of the electromagnetic radiation opening is matched with that of the sample installation area; and second shielding reeds which can be spliced with the first shielding reeds are arranged around the electromagnetic radiation opening.
According to the technical scheme provided by some embodiments of the application, the mounting plate body comprises a metal layer, a wave absorbing layer and a wave transmitting layer, wherein the metal layer, the wave absorbing layer and the wave transmitting layer are sequentially arranged, and the wave transmitting layer is used for mounting a test piece sample.
According to the technical scheme provided by some embodiments of the application, a reinforcing support and a moving wheel convenient for the shielding box to move are arranged outside the shielding box.
Compared with the prior art, the beneficial effect of this application: the two-dimensional sample switching system is mainly used in ground vacuum and strong electromagnetic field irradiation tests, can meet the test piece sample switching requirements in the vacuum and strong electromagnetic field tests, and can realize the switching of the test piece samples arranged on each sample installation area by driving the sample installation plate to move along a first direction, a second direction and a third direction through the driving mechanism, namely, each test piece sample is aligned with an electromagnetic radiation port in sequence to carry out the strong electromagnetic irradiation test; the first shielding reeds are arranged around the sample installation area, and the second shielding reeds which can be mutually spliced with the first shielding reeds are arranged around the electromagnetic radiation openings, so that a Faraday cage boundary can be formed, the shielding of the shielding box body to the outside is realized, the electromagnetic waves which are coupled into the shielding box body are reduced, and the test piece sample is directly exposed in a strong electromagnetic environment while equipment in the shielding box body is protected.
Drawings
Fig. 1 is a schematic external structural diagram of a two-dimensional sample switching system according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of an internal structure of a two-dimensional sample switching system according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a driving mechanism of a two-dimensional sample switching system according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a first shielding reed and a second shielding reed of a two-dimensional sample switching system according to an embodiment of the present disclosure in a plugging fit manner;
fig. 5 is a schematic structural diagram of a mounting plate body of a two-dimensional sample switching system according to an embodiment of the present disclosure;
fig. 6 is a system diagram of a two-dimensional sample switching system provided in an embodiment of the present application in a typical application mode.
The text labels in the figures are represented as:
100. a shielding box cover; 101. an electromagnetic radiation port; 102. a shielding box body; 103. fixing the bolt; 104. a reinforcing bracket; 105. a moving wheel; 106. a second shielding reed; 107. a first through-wall electrical connector;
201. a first drive motor; 202. a first lead screw; 203. a first optical axis; 204. a first mobile platform; 205. a first limit switch; 206. a first linear bearing;
301. a second drive motor; 302. a second lead screw; 303. a second optical axis; 304. a second mobile platform; 305. a second limit switch; 306. a second linear bearing;
401. a third drive motor; 402. a third lead screw; 403. a third optical axis; 404. a sample mounting plate; 405. a third limit switch; 406. a third linear bearing;
404-1, a first shielding reed; 404-2, a sample mounting area; 404-3, a metal layer; 404-4, a wave absorbing layer; 404-5, a wave-transparent layer;
500. a test piece sample;
600. a vacuum simulated container; 601. a ground point; 602. a second through-wall electrical connector;
701. a shielded cable; 702. a controller; 703. a communication cable; 704. and (4) a computer.
Detailed Description
The following detailed description of the present application is given in conjunction with the accompanying drawings for the purpose of enabling those skilled in the art to better understand the technical solution of the present application, and the description in this section is only exemplary and explanatory, and should not be taken as limiting the scope of the present application in any way.
Referring to fig. 1 and fig. 2, the present embodiment provides a two-dimensional sample switching system, including: a shield case 102, a shield case cover 100, a sample mounting plate 404, and a drive mechanism.
The shielding box body 102 is a cuboid structure with a front side opening; the shielding box cover 100 is arranged on the opening side of the shielding box body 102 and is fixedly connected with the shielding box body 102 through a fixing bolt 103; in order to reduce the coupling of electromagnetic waves, the fixing bolts 103 are countersunk bolts, and copper-based adhesive tapes are adhered to the surfaces of the fixed bolts for shielding.
An electromagnetic radiation port 101 is formed in the center of the shielding case cover 100, and electromagnetic waves emitted by an electromagnetic emission device outside the shielding case body 102 can be emitted into the shielding case body 102 through the electromagnetic radiation port 101; the sample mounting plate 404 is arranged in the shielding box body 102 and is provided with a plurality of sample mounting areas 404-2, and the sample mounting areas 404-2 are used for adhering a test piece sample 500 (namely an effector for test); the test piece sample 500 is generally a multilayer insulation assembly MLI, an optical secondary surface mirror OSR, or the like.
The driving mechanism is arranged in the shielding box body 102 and is used for driving the sample mounting plate 404 to move along a first direction, a second direction and a third direction so that the electromagnetic radiation port 101 can be aligned with any one sample mounting area 404-2; the first direction, the second direction and the third direction are perpendicular to each other; in the present embodiment, the first direction is parallel to the height direction of the shielding box 102; the second direction is parallel to the length direction of the shielding box 102; the third direction is parallel to the width direction of the shield case 102, i.e., perpendicular to the shield case cover 100.
With further reference to fig. 3, the driving mechanism includes: the driving device comprises a first driving assembly, a second driving assembly and a third driving assembly; the sample mounting plate 404 is mounted on the third drive assembly for driving the sample mounting plate 404 to move in the third direction; the third driving assembly is mounted on the second driving assembly, and the second driving assembly is used for driving the third driving assembly to move along the second direction; the second driving assembly is mounted on the first driving assembly, and the first driving assembly is used for driving the second driving assembly to move along the first direction.
The first drive assembly includes: a first driving motor 201, a first lead screw 202, a first optical axis 203 and a first moving platform 204; the first driving motor 201 is installed on the side wall of the shielding box 102, is a vacuum stepping motor, is controlled in a two-phase or three-phase manner, is lubricated by using a solid lubricant, such as molybdenum disulfide and the like, and is used for providing power for moving a sample along a first direction; the first lead screw 202 is connected with an output shaft of the first driving motor 201 through a coupler and is used for converting the rotary motion of the first driving motor 201 into the linear motion of the first moving platform 204; the length direction of the first lead screw 202 and the length direction of the first optical axis 203 are respectively parallel to the first direction, the first lead screw 202 is rotatably installed in the shielding box body 102, and the first optical axis 203 is fixedly installed in the shielding box body 102 and used for guiding the first moving platform 204; the first moving platform 204 is in threaded connection with the first lead screw 202, and is also in sliding connection with the first optical axis 203; in order to reduce the moving resistance of the first moving platform 204 when moving along the first optical axis 203, the first moving platform 204 is connected to the first optical axis 203 through a first linear bearing 206; in this embodiment, two first lead screws 202 and two first optical axes 203 are provided, and the two first optical axes 203 are respectively located at two ends of the first moving platform 204; the two first lead screws 202 are located between the two first optical axes 203 and are symmetrically distributed about the center of the first moving platform 204.
In use, the first driving motor 201 rotates to drive the first lead screw 202 to rotate correspondingly, so that the first moving platform 204 moves along the first direction under the action of the first lead screw 202 and the first optical axis 203, and the sample can move along the first direction.
The second drive assembly includes: a second driving motor 301, a second lead screw 302, a second optical axis 303, and a second moving platform 304; the second driving motor 301 is mounted on the first moving platform 204, is a vacuum stepping motor, is controlled in a two-phase or three-phase manner, and is lubricated by a solid lubricant, such as molybdenum disulfide, and is used for providing power for moving the sample in the second direction; the second lead screw 302 is connected with an output shaft of the second driving motor 301 through a coupler and is used for converting the rotary motion of the second driving motor 301 into the linear motion of the second moving platform 304; the length direction of the second lead screw 302 and the length direction of the second optical axis 303 are respectively parallel to a second direction, the second lead screw 302 is rotatably mounted on the first moving platform 204, and the second optical axis 303 is fixedly mounted on the first moving platform 204 and used for guiding the second moving platform 304; the second moving platform 304 is in threaded connection with the second lead screw 302 and is also in sliding connection with the second optical axis 303; in order to reduce the moving resistance of the second moving platform 304 when moving along the second optical axis 303, the second moving platform 304 is connected to the second optical axis 303 through a second linear bearing 306; in this embodiment, two second lead screws 302 and two second optical axes 303 are provided, and the two second optical axes 303 are respectively located at two ends of the second moving platform 304; the two second lead screws 302 are located between the two second optical axes 303 and are symmetrically distributed about the center of the second moving platform 304.
In use, the second driving motor 301 drives the second lead screw 302 to rotate correspondingly, so that the second moving platform 304 moves along the second direction under the action of the second lead screw 302 and the second optical axis 303, and thus, the sample can move along the second direction.
The third drive assembly includes: a third drive motor 401, a third lead screw 402, and a third optical axis 403; the third driving motor 401 is fixedly mounted on the second moving platform 304, is a vacuum stepping motor, is controlled in a two-phase or three-phase manner, is lubricated by a solid lubricant, such as molybdenum disulfide, and is used for providing power for moving the sample in a third direction; the third lead screw 402 is connected with an output shaft of the third driving motor 401 through a coupler and is used for converting the rotary motion of the third driving motor 401 into the linear motion of the sample mounting plate 404; the length direction of the third lead screw 402 and the length direction of the third optical axis 403 are respectively parallel to the third direction, the third lead screw 402 is rotatably mounted on the second moving platform 304, and the third optical axis 403 is fixedly mounted on the second moving platform 304 and used for guiding the sample mounting plate 404; the sample mounting plate 404 is in threaded connection with the third lead screw 402 and is also in sliding connection with the third optical axis 403; to reduce the moving resistance of the sample mounting plate 404 when moving along the third optical axis 403, the sample mounting plate 404 is connected to the third optical axis 403 through a third linear bearing 406; in this embodiment, two third lead screws 402 and four third optical axes 403 are provided, and the four third optical axes 403 are respectively located at four corners of the sample mounting plate 404; the two third lead screws 402 are symmetrically distributed about the center of the sample mounting plate 404.
In use, the third driving motor 401 drives the third lead screw 402 to rotate correspondingly, so that the sample mounting plate 404 moves in the third direction under the action of the third lead screw 402 and the third optical axis 403, and thus, the sample can move in the third direction.
Preferably, the first driving assembly further comprises a first limit switch 205 disposed in the first direction; the first limit switch 205 is used for limiting the moving range of the first moving platform 204; the second drive assembly further comprises a second limit switch 305 disposed in the second direction; the second limit switch 305 is used for limiting the moving range of the second moving platform 304; the third drive assembly further comprises a third limit switch 405 disposed in the third direction; the third limit switch 405 is used to limit the range of movement of the sample mounting plate 404.
The limit switches (including the first limit switch 205, the second limit switch 305, and the third limit switch 405) described in this embodiment may be contact-type limit switches or photoelectric limit switches; the limit switches are connected to the controller 702, and the controller 702 can read the states of the limit switches (when the limit switches are not triggered, the state value of the limit switches is 0, and when the limit switches are triggered, the state value of the limit switches is 1), and control the on/off of the driving motors in the driving assemblies in the corresponding directions according to the states of the limit switches.
For example: the first limit switch 205 arranged in the first direction is a contact limit switch, the contact limit switch is fixedly installed on the first moving platform 204, a blocking piece is fixedly installed at a corresponding position at the bottom of the shielding box 102, when the first driving motor 201 drives the first moving platform 204 to move along the first direction, and when the contact limit switch touches the blocking piece, a state value of the contact limit switch is changed from 0 to 1, and at this time, the controller 702 may control the first driving motor 201 to stop operating.
Referring further to fig. 3, the sample mounting plate 404 includes a mounting plate body, and a plurality of first shielding reeds 404-1 disposed on a side of the mounting plate body close to the shielding box cover 100; a portion of the first shielding reeds 404-1 are disposed parallel to the first direction, another portion of the first shielding reeds 404-1 are disposed parallel to the second direction, and all of the first shielding reeds 404-1 divide the surface of the mounting plate body into a plurality of sample mounting areas 404-2 having the same shape and the same size; all of the sample mounting areas 404-2 are distributed vertically and horizontally to form a rectangular array.
Referring further to fig. 4, the size of the electromagnetic radiation port 101 matches the size of the sample mounting area 404-2; the periphery of the electromagnetic radiation port 101 is provided with a second shielding reed 106 which can be inserted with the first shielding reed 404-1; specifically, an opening into which the first shielding reed 404-1 can be inserted is provided at an end of the second shielding reed 106 facing the first shielding reed 404-1.
In use, the sample mounting plate 404 is driven by the first driving assembly and the second driving assembly to move along the first direction and the second direction, so as to align the test piece sample 500 to be tested with the electromagnetic radiation port 101; the third driving assembly drives the sample mounting plate 404 to move in the third direction, so that the first shielding reed 404-1 around the sample mounting area 404-2 where the test piece sample 500 is located is inserted into the opening of the second shielding reed 106 to form a closed metal structure, i.e. a faraday cage boundary is formed, which can shield the shielding box 102 from the outside, reduce electromagnetic waves coupled into the shielding box 102, and directly expose the test piece sample 500 to a strong electromagnetic environment while protecting the equipment in the shielding box 102.
Referring to fig. 5, the mounting plate body includes a metal layer 404-3, a wave absorbing layer 404-4, and a wave transparent layer 404-5 for mounting a test piece sample 500. The wave-transparent layer 404-5 is used for providing a mounting boundary of the test piece sample 500; the wave absorbing layer 404-4 is used for absorbing electromagnetic wave irradiation and preventing unreal damage effect generated by electromagnetic wave reflection, is mainly a sintered C/SiC composite material, has low gas output rate, and can absorb the electromagnetic wave irradiation in vacuum; the metal layer 404-3 is used for heat conduction and provides a main supporting function for the sample mounting plate 404, and the metal layer 404-3 is a metal plate with a thickness of 1-5 mm. In use, the test piece sample 500 is attached to the surface of the wave-transparent layer 404-5 by adhesive.
Referring to fig. 1, a reinforcing bracket 104 is disposed outside the shielding box 102, and the reinforcing bracket 104 is disposed at a lower portion of a side of the shielding box 102 away from the shielding box cover 100, so as to perform a bearing function and enhance stability; the bottom of the shielding box body 102 and the bottom of the reinforcing support 104 are respectively provided with two moving wheels 105, the bottom of the shielding box body 102 is provided with two moving wheels 105, the bottom of the reinforcing support 104 is provided with two moving wheels 105, and the shielding box body 102 is convenient to move due to the arrangement of the moving wheels 105.
A system diagram of a two-dimensional sample switching system provided in an embodiment of the present application in a typical application mode is shown in fig. 6. The shielding box body 102 is placed in a vacuum simulation container 600, and the ultimate vacuum degree of the vacuum simulation container 600 can reach 1.33x10 -3 Pa below; a grounding point 601 connected with the shielding box body 102 is arranged in the vacuum simulation container 600, and the grounding resistance of the grounding point is generally less than 0.5 omega; a controller 702 and a computer 704 are arranged outside the vacuum simulation container 600; the first driving motor 201, the second driving motor 301, the third driving motor 401, the first limit switch 205, the second limit switch 305, and the third limit switch 405 are electrically connected to the controller 702 through shielded cables 701, respectively; a first through-wall electrical connector 107 is mounted on one side of the shielding box body 102 away from the shielding box cover 100, so that the shielding cable 701 in the shielding box body 102 can be led out conveniently; a second through-wall electrical connector 602 is mounted on a side wall of the vacuum simulation container 600, so that the shielding cable 701 in the vacuum simulation container 600 can be led out conveniently; the second through-wall electrical connector 602 may be selected from a high frequency through-wall hermetic electrical connector (typically including TNC type, N type, etc.) or a low frequency through-wall hermetic electrical connector (typically including Y27A-2237 series); the controller 702 is used for reading the state of each limit switch and driving each driving motor to operate; the controller 702 is connected to the computer 704 via a communication cable 703; the communication cable 703 mayIn the form of a USB cable, an ethernet cable, etc.; the computer 704 is used for sending control instructions to the controller 702 and reading the corresponding control states.
The working steps of the system are as follows:
1) Sequentially adhering the test piece samples 500 to each sample installation area 404-2;
2) Performing system test, namely the controller 702 respectively controls the first driving motor 201, the second driving motor 301 and the third driving motor 401 to operate, so as to ensure that no problem exists in the movement in the first direction, the second direction and the third direction;
3) Starting the vacuum simulation container 600, and pumping the vacuum simulation container 600 to a preset pressure through a vacuum pump;
4) Calibrating zero points in a first direction (equivalent to a Y direction), a second direction (equivalent to an X direction) and a third direction (equivalent to a Z direction) in sequence;
taking the zero point of the first direction as an example for specific description, the specific method is as follows: the controller 702 controls the first driving motor 201 to rotate, so as to drive the sample mounting plate 404 to move along the first direction, and when the state value returned by the first limit switch 205 is 1, the controller 702 controls the first driving motor 201 to stop running, and the current position is calibrated as the zero point of the system in the first direction; the calibration method of the zero point in the second direction and the third direction is similar to the calibration method of the zero point in the first direction, and is not repeated here.
5) The computer 704 reads the initial set values, i.e., the coordinate set values of each test piece sample 500 entered in the program;
assuming that n sample mounting areas 404-2 are provided on the sample mounting plate 404, that is, n test piece samples 500 can be mounted, the initial setting value of each test piece sample 500 is (i, xi, yi) and z1 value, where i is the serial number of the test piece sample 500, xi and yi are the coordinate values in the X direction and the Y direction of the test piece sample 500, respectively, and z1 value is the distance required to move from the third direction zero point to the opening where the first shielding reed 404-1 is inserted into the second shielding reed 106.
6) Sequentially carrying out irradiation tests on the test piece samples 500 in the sample mounting areas 404-2;
taking a certain test piece sample 500 as an example, assuming that the coordinates of the test piece sample 500 are (xi, yi), the controller 702 controls the first driving motor 201 and the second driving motor 301 to rotate correspondingly according to the coordinate data, so that the sample mounting plate 404 moves correspondingly in the first direction and the second direction until the sample mounting area 404-2 where the test piece sample 500 is located is aligned with the electromagnetic radiation port 101, and controls the first driving motor 201 and the second driving motor 301 to stop rotating; the controller 702 controls the third driving motor 401 to rotate, so that the sample mounting plate 404 moves in the third direction until the first shielding reeds 404-1 around the test piece sample 500 are inserted into the openings of the second shielding reeds 106, that is, move by a distance of z1, and controls the third driving motor 401 to stop rotating, so that the electromagnetic waves are radiated on the test piece sample 500 through the electromagnetic radiation port 101 to perform an irradiation test; after the test is completed, the third driving motor 401 is controlled to rotate in the opposite direction, so that the first shielding reeds 404-1 around the test piece sample 500 move out of the openings of the second shielding reeds 106, and the sample mounting plate 404 moves to the zero point position in the third direction. By repeating the above steps, the irradiation test of all the test piece samples 500 on the sample mounting plate 404 can be completed.
7) After all of the test piece samples 500 on the sample mounting plate 404 have been tested, the vacuum simulation vessel 600 is repressurized.
The two-dimensional sample switching system is mainly used for ground vacuum and strong electromagnetic field irradiation tests, can meet the requirement for switching test piece samples in the vacuum and strong electromagnetic field tests, and can realize switching of the test piece samples arranged on each sample installation area by driving the sample installation plate to move along a first direction, a second direction and a third direction through the driving mechanism, namely, each test piece sample is aligned with an electromagnetic radiation port in sequence to carry out the strong electromagnetic irradiation test; the first shielding reeds are arranged around the sample installation area, and the second shielding reeds which can be mutually spliced with the first shielding reeds are arranged around the electromagnetic radiation openings, so that a Faraday cage boundary can be formed, the shielding of the shielding box body to the outside is realized, the electromagnetic waves which are coupled into the shielding box body are reduced, and the test piece sample is directly exposed in a strong electromagnetic environment while equipment in the shielding box body is protected.
The application provides a two-dimensional sample switching system, extensive applicability, it is nimble reliable, can replace the sample mounting panel of different models according to the experimental demand, support for the experiment of different grade type.
The principles and embodiments of the present application are described herein using specific examples, which are only used to help understand the method and its core idea of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are no specific structures which are objectively limitless due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the technical features mentioned above can be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention in other instances, which may or may not be practiced, are intended to be within the scope of the present application.
Claims (8)
1. A two-dimensional sample switching system, comprising:
a shielding cage (102);
a shield case cover (1) which is arranged on one side of the shield case body (102) and is provided with an electromagnetic radiation opening (101);
a sample mounting plate (404) disposed within the shielded enclosure (102) having a plurality of sample mounting areas (404-2);
a drive mechanism disposed within the shielded enclosure (102) for driving the sample mounting plate (404) to move in a first direction, a second direction, and a third direction so that the electromagnetic radiation port (101) can be aligned with any one of the sample mounting areas (404-2); the first direction, the second direction and the third direction are perpendicular to each other;
the sample mounting plate (404) comprises a mounting plate body and a plurality of first shielding reeds (404-1) arranged on one side, close to the shielding box cover (1), of the mounting plate body; all of the first shielding reeds (404-1) divide the surface of the mounting board body into a plurality of the sample mounting areas (404-2); all the sample mounting areas (404-2) are distributed in a longitudinal and transverse mode to form a rectangular array;
the size of the electromagnetic radiation opening (101) is matched with that of the sample mounting area (404-2); second shielding reeds (106) which can be plugged with the first shielding reeds (404-1) are arranged on the periphery of the electromagnetic radiation opening (101); one end of the second shielding reed (106) facing the first shielding reed (404-1) is provided with an opening into which the first shielding reed (404-1) can be inserted;
when the first shielding reed (404-1) is inserted into the opening of the second shielding reed (106), a closed metal structure is formed, namely a Faraday cage boundary is formed, so that the shielding of the shielding box body (102) to the outside is realized, and the electromagnetic wave coupled into the shielding box body (102) is reduced.
2. The two-dimensional sample switching system according to claim 1, wherein the drive mechanism comprises: the driving device comprises a first driving assembly, a second driving assembly and a third driving assembly;
the sample mounting plate (404) is mounted on the third drive assembly for driving the sample mounting plate (404) to move in the third direction;
the third driving assembly is mounted on the second driving assembly, and the second driving assembly is used for driving the third driving assembly to move along the second direction;
the second driving assembly is mounted on the first driving assembly, and the first driving assembly is used for driving the second driving assembly to move along the first direction.
3. The two-dimensional sample switching system of claim 2, wherein the first drive assembly comprises: the device comprises a first moving platform (204), a first optical axis (203), a first lead screw (202) and a first driving motor (201) for driving the first lead screw (202) to rotate; the first optical axis (203) is fixedly arranged in the shielding box body (102) and is parallel to the first direction; the first lead screw (202) is rotatably arranged in the shielding box body (102) and is parallel to the first direction; the first moving platform (204) is in threaded connection with the first lead screw (202) and is in sliding connection with the first optical axis (203).
4. The two-dimensional sample switching system according to claim 3, wherein the second drive assembly comprises: the device comprises a second moving platform (304), a second optical axis (303), a second lead screw (302) and a second driving motor (301) for driving the second lead screw (302) to rotate; the second optical axis (303) is fixedly arranged on the first moving platform (204) and is parallel to the second direction; the second lead screw (302) is rotatably arranged on the first moving platform (204) and is parallel to the second direction; the second moving platform (304) is in threaded connection with the second lead screw (302) and is in sliding connection with the second optical axis (303).
5. The two-dimensional sample switching system according to claim 4, wherein the third drive assembly comprises: a third optical axis (403), a third lead screw (402), and a third driving motor (401) for driving the third lead screw (402) to rotate; the third optical axis (403) is fixedly arranged on the second movable platform (304) and is parallel to the third direction; the third lead screw (402) is rotatably arranged on the second moving platform (304) and is parallel to the third direction; the sample mounting plate (404) is in threaded connection with the third lead screw (402) and is in sliding connection with the third optical axis (403).
6. The two-dimensional sample switching system according to claim 5, wherein the first drive assembly further comprises a first limit switch (205) disposed in the first direction; the first limit switch (205) is used for limiting the movement range of the first mobile platform (204); the second drive assembly further comprises a second limit switch (305) disposed in the second direction; the second limit switch (305) is used for limiting the movement range of the second moving platform (304); the third drive assembly further comprises a third limit switch (405) disposed in the third direction; the third limit switch (405) is used for limiting the movement range of the sample mounting plate (404).
7. The two-dimensional sample switching system according to claim 1, wherein the mounting plate body comprises a metal layer (404-3), a wave-absorbing layer (404-4) and a wave-transparent layer (404-5) for mounting a test piece sample (500) in sequence.
8. The two-dimensional sample switching system according to claim 1, wherein the exterior of the shielded enclosure (102) is provided with a stiffening bracket (104) and a moving wheel (105) for facilitating movement of the shielded enclosure (102).
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| US6825466B2 (en) * | 2002-08-01 | 2004-11-30 | Automated Biotechnology, Inc. | Apparatus and method for automated sample analysis by atmospheric pressure matrix assisted laser desorption ionization mass spectrometry |
| JP5142315B2 (en) * | 2007-07-18 | 2013-02-13 | 独立行政法人情報通信研究機構 | Microscope and observation method thereof |
| CN204374157U (en) * | 2015-01-06 | 2015-06-03 | 北京环宇亦鼓科技有限公司 | A kind of chromatograph auto injection equipment |
| CN105806810B (en) * | 2016-06-01 | 2019-09-10 | 北京卫星环境工程研究所 | Spectral reflectivity in-situ test system under vacuum environment |
| CN210102859U (en) * | 2019-04-16 | 2020-02-21 | 上海为肯工业设计有限公司 | Sample changing device used in high-temperature/irradiation equipment |
| CN209979526U (en) * | 2019-05-31 | 2020-01-21 | 苏州大学 | Device for detecting X-ray performance of semiconductor material |
| CN110849684B (en) * | 2019-11-19 | 2022-04-01 | 中国核动力研究设计院 | Device for preparing radioactive sample |
| CN111029789B (en) * | 2019-12-24 | 2021-10-22 | 中国航空工业集团公司沈阳飞机设计研究所 | Wave-absorbing material with positive honeycomb structure of 10 degrees |
| CN112858705A (en) * | 2021-01-05 | 2021-05-28 | 中国原子能科学研究院 | Sample changing device for proton beam irradiation experiment and sample mounting mechanism |
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