A detection device for sensors in electromagnetic environment

Abstract

The present invention discloses a detection device for sensors in an electromagnetic environment, belonging to the field of sensor detection technology. A detection device for sensors in an electromagnetic environment, comprising a detector with a jack on the top, and also comprising: a shielding cover with an opening at the lower end, mounted on the top of the detector, wherein the jack is located at the inner bottom of the shielding cover, a lifting device is fixedly mounted on the detector, the telescopic end of the lifting device is fixedly connected to a mounting frame, and the shielding cover is fixedly mounted on the mounting frame; a vertical axis, mounted on the inner top of the detector, wherein the outer wall of the vertical axis is mounted with a plurality of vertical rods distributed in a circle, the outer walls of the plurality of vertical rods are fixedly wound with coils, and a driving part for driving the vertical axis to rotate is provided on the shielding cover; the present invention can simulate a dynamic electromagnetic environment to make the detection of the sensor more accurate.

Description

Technical Field

[0001] The present invention relates to the field of sensor detection technology, and in particular to a detection device for a sensor in an electromagnetic environment. Background Art

[0002] A sensor is a detection device that can sense the information being measured and convert it into electrical signals or other required forms of information output according to certain rules to meet the needs of information transmission, processing, storage, display, recording and control. Among them, sensors that operate for a long time in an electromagnetic environment mainly include those used to detect magnetic fields, currents, speeds and other physical quantities that may involve changes in electromagnetic fields.

[0003] In order to ensure the quality of sensors, it is necessary to test the produced sensors. For example, speed sensors and position sensors are mainly installed on automobiles and other equipment. The installation environment is often in a magnetic field. It is extremely important to test their working stability in a magnetic field environment. However, the detection instruments in the existing technology have relatively single functions and it is difficult to simulate the complex actual working environment. This will cause the detection environment of the sensor to be inconsistent with the working environment, resulting in inaccurate detection results. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the detection instrument has a relatively single function and is difficult to simulate a complex actual working environment, resulting in inaccurate detection results, and to propose a detection device for sensors in an electromagnetic environment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A detection device for a sensor in an electromagnetic environment, comprising a detector with a socket on the top, and also comprising: a shielding cover with an opening at the lower end, mounted on the top of the detector, wherein the socket is located at the inner bottom of the shielding cover, a lifting device is fixedly mounted on the detector, a telescopic end of the lifting device is fixedly connected to a mounting frame, and the shielding cover is fixedly mounted on the mounting frame; a vertical axis, mounted on the inner top of the detector, wherein a plurality of vertical rods distributed in a circle are mounted on the outer wall of the vertical axis, coils are fixedly wound on the outer walls of the plurality of vertical rods, and a driving part for driving the vertical axis to rotate is provided on the shielding cover.

[0007] In order to drive the coil to revolve around the sensor, preferably, the driving part includes a driving motor fixedly mounted on the top of the shielding cover, the output end of the driving motor is fixedly connected to an output shaft, and the end of the output shaft is connected to the vertical shaft through a connecting part.

[0008] In order to make the coil move up and down reciprocatingly, the connecting part further includes an inner rod fixedly connected to the lower end of the output shaft, the upper end of the vertical shaft is provided with a sliding hole, the sliding hole is longitudinally slidably sleeved on the outer wall of the inner rod, and the shielding cover is provided with a lifting part that drives the vertical shaft to move up and down.

[0009] In order to make the coil move back and forth up and down, further, the lifting part includes a first reciprocating screw rotatably connected to the shielding cover, the first reciprocating screw is connected to the transmission gear through two mutually meshing transmission gears, the outer wall of the first reciprocating screw is threadedly connected to a lifting plate slidably connected to the shielding cover, and the vertical axis is rotatably connected to the lifting plate.

[0010] In order to make the coil move back and forth, preferably, the outer wall of the vertical shaft is rotatably connected to a horizontal shaft perpendicular thereto, and the end of the horizontal shaft is provided with a reciprocating part for driving the vertical rod to slide back and forth.

[0011] In order to make the coil move back and forth horizontally, the reciprocating part further includes a second reciprocating screw fixedly connected to the end of the horizontal axis, and the outer wall of the vertical axis is fixedly connected to a guide rod arranged parallel to the second reciprocating screw, wherein the outer wall of the second reciprocating screw is threadedly connected to a translation plate slidably connected to the guide rod, and the vertical rod is fixedly connected to the translation plate.

[0012] In order to make the second reciprocating screw rotate automatically, further, the end of the second reciprocating screw is fixedly connected with a flexible roller, and the inner wall of the shielding cover is fixedly connected with an annular table. When the vertical axis moves downward to the extreme position, the flexible roller will rest on the annular table.

[0013] In order to dissipate the heat of the coil, further, an inner tube is fixedly connected inside the vertical rod, and a nozzle facing the axis of the shielding cover is fixedly installed on the inner tube.

[0014] In order to facilitate blowing into the inner tube, further, the end of the guide rod is fixedly connected to a limiting plate, a telescopic airbag is installed between the translation plate and the limiting plate, the telescopic airbag is fixedly connected to an intake pipe and an exhaust pipe connected thereto, and the end of the exhaust pipe is fixedly connected to the inner tube.

[0015] In order to make the sensor vibrate, further, a mounting groove is provided on the top of the detector, a support platform is longitudinally slidably installed in the mounting groove, the socket is fixedly installed on the support platform, and a spring is installed between the support platform and the inner bottom of the mounting groove, when the vertical axis drives the vertical rod to move downward to the extreme position, the bottom of the vertical rod will press against the upper end surface of the support platform.

[0016] Compared with the prior art, the present invention provides a detection device for sensors in an electromagnetic environment, which has the following beneficial effects:

[0017] 1. The detection device for sensors in electromagnetic environment drives the output shaft to rotate by driving the motor, and the output shaft drives the inner rod to rotate, and the inner rod drives the vertical axis to rotate, and the vertical axis drives the vertical rod and the coil to revolve around the sensor through the horizontal axis, thereby simulating a dynamic electromagnetic environment to make the detection of the sensor more accurate.

[0018] 2. The detection device for sensors in electromagnetic environments drives the lifting plate to move up and down reciprocatingly through the first reciprocating screw, and the vertical axis drives the vertical rod and the coil to move up and down reciprocatingly through the horizontal axis. Therefore, the coil not only revolves around the sensor, but also moves up and down, which can better simulate the complex electromagnetic field environment that the sensor may be in in reality, making the sensor's detection result more accurate.

[0019] 3. The detection device for sensors in electromagnetic environments drives the flexible roller to be placed on the annular table through the horizontal axis, and the second reciprocating screw drives the coil to slide back and forth horizontally, and the coil will indirectly approach and move away from the sensor, thereby making the magnetic field of the electromagnetic environment more complex, and the detection environment is more in line with or higher than the actual situation, further improving the detection accuracy of the sensor.

[0020] 4. The detection device for sensors in electromagnetic environments squeezes the telescopic airbag through the translation plate, and the inner tube blows air toward the sensor through the nozzle. When the air passes through the inner tube in the vertical rod, the vertical rod and the coil can be cooled to ensure the working stability of the coil, thereby ensuring the detection accuracy of the sensor. After the heated air is blown toward the sensor, the working environment of the sensor can be heated up, which is more in line with the actual working environment and has higher detection accuracy.

[0021] 5. The detection device for sensors in electromagnetic environments can make the support platform vibrate up and down through the vertical rod that moves up and down, thereby driving the sensor to vibrate up and down to simulate a working environment with a higher load on the sensor, further improving the detection accuracy of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the isometric structure of a detection device for a sensor in an electromagnetic environment proposed by the present invention;

[0023] Figure 2 This is a structural schematic diagram of a detection device for a sensor in an electromagnetic environment proposed by the present invention, with the shielding cover in an open state;

[0024] Figure 3 This is a schematic diagram of the isometric structure of a detector for a detection device of a sensor in an electromagnetic environment proposed by the present invention;

[0025] Figure 4A schematic diagram of the cross-sectional structure of a detector for a detection device of a sensor in an electromagnetic environment proposed by the present invention;

[0026] Figure 5 This is a schematic diagram of the isometric structure of a shielding cover for a detection device of a sensor in an electromagnetic environment proposed by the present invention;

[0027] Figure 6 A schematic diagram of a partial isometric structure of a detection device for a sensor in an electromagnetic environment proposed by the present invention;

[0028] Figure 7 This is a schematic diagram of the vertical rod isometric structure of a detection device for a sensor in an electromagnetic environment proposed by the present invention;

[0029] Figure 8 This is a schematic diagram of the vertical isometric structure of a detection device for a sensor in an electromagnetic environment proposed by the present invention.

[0030] In the figure: 1. detector; 2. jack; 3. shielding cover; 4. vertical axis; 5. horizontal axis; 6. vertical rod; 7. coil; 8. drive motor; 9. sliding hole; 10. inner rod; 11. first reciprocating screw; 12. transmission gear; 13. lifting plate; 14. second reciprocating screw; 15. guide rod; 16. translation plate; 17. annular table; 18. flexible roller; 19. output shaft; 20. mounting groove; 21. support table; 22. spring; 23. lifting device; 24. mounting frame; 25. inner tube; 26. nozzle; 27. telescopic airbag; 28. limit plate; 29. ​​suction pipe; 30. exhaust pipe; 31. hard roller; 32. exhaust hole; 33. intake hole. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Embodiment 1:

[0034] Reference Figure 1-Figure 8, a detection device for a sensor in an electromagnetic environment, comprising a detector 1 with a jack 2 on the top, the detector 1 can be an oscilloscope, a multimeter or a special speed sensor tester for detecting a speed sensor, the jack 2 is used to install a sensor connected to the detector 1, and also includes: a shielding cover 3 with an opening at the lower end, installed on the top of the detector 1, the shielding cover 3 is used to reduce the influence of the external electromagnetic field on the sensor, wherein the jack 2 is located at the inner bottom of the shielding cover 3, a lifting device 23 is fixedly installed on the detector 1, the lifting device 23 is an electric telescopic rod, the telescopic end of the lifting device 23 is fixedly connected to a mounting frame 24, and the shielding cover 3 is fixedly installed on the mounting frame 24; a vertical axis 4 is installed on the inner top of the detector 1, wherein the outer wall of the vertical axis 4 is installed with a plurality of vertical rods 6 distributed in a circle, the number of the vertical rods 6 is 2-6, and the preferred number in this application is 3, the outer walls of the plurality of vertical rods 6 are fixedly wound with coils 7 for energizing, and the shielding cover 3 is provided with a driving part for driving the vertical axis 4 to rotate.

[0035] Specifically, when in use, the sensor to be detected is inserted into the jack 2, so that the sensor is connected to the detector 1, so that the detector 1 displays the data detected by the sensor. Before the detection, the mounting frame 24 is driven downward by the lifting device 23, and the mounting frame 24 will drive the shielding cover 3 to cover the sensor, and then the coil 7 on the outer wall of the vertical rod 6 is energized to simulate the sensor working in an electromagnetic environment. At this time, the stability of the sensor can be tested by observing whether the data of the detector 1 has obvious jumps. During the detection process, the driving unit can drive the vertical rod 6 and the coil 7 to revolve around the sensor, thereby simulating a dynamic electromagnetic environment to make the detection of the sensor more accurate.

[0036] During the detection process, if the data jump range detected by the detector 1 is large, the sensor is judged to be unqualified, otherwise it is qualified. For example, when the data jump range of the speed sensor is less than 1 cm per second, it is qualified. The specific accuracy requirement of the speed sensor needs to be considered.

[0037] Embodiment 2:

[0038] Reference Figure 1 , Figure 2 , Figure 6 as well as Figure 7 , which is basically the same as the first embodiment, and further discloses a specific implementation scheme of the driving unit.

[0039] The above-mentioned driving part includes a driving motor 8 fixedly installed on the top of the shielding cover 3, the output end of the driving motor 8 is fixedly connected to the output shaft 19, the end of the output shaft 19 is connected to the vertical shaft 4 through a connecting part, and the coil 7 can be connected in series to the power supply circuit of the driving motor 8.

[0040] Specifically, during the detection process, the drive motor 8 is started, and the drive motor 8 will drive the output shaft 19 to rotate, and the output shaft 19 will drive the vertical shaft 4 to rotate through the connecting part, and the vertical shaft 4 will drive the vertical rod 6 and the coil 7 to revolve around the sensor, thereby simulating a dynamic electromagnetic environment to make the detection of the sensor more accurate.

[0041] Embodiment three:

[0042] Reference Figure 4 as well as Figure 6-Figure 8 , which is basically the same as the second embodiment, and further discloses a specific implementation scheme of the connecting part.

[0043] The above-mentioned connecting part includes an inner rod 10 fixedly connected to the lower end of the output shaft 19, the cross-sectional shape of the axial end of the inner rod 10 is a hexagon, and a sliding hole 9 is provided at the upper end of the vertical shaft 4. The axial cross-sectional shape of the sliding hole 9 is the same as the axial cross-sectional shape of the inner rod 10, and the sliding hole 9 is longitudinally slidably sleeved on the outer wall of the inner rod 10. The shielding cover 3 is provided with a lifting part for driving the vertical shaft 4 to move up and down, and the lifting part includes a first reciprocating screw 11 rotatably connected to the shielding cover 3, and the first reciprocating screw 11 is connected to the transmission gear 12 by two mutually meshing transmission gears 12. The outer wall of the first reciprocating screw 11 is threadedly connected to a lifting plate 13 slidably connected to the shielding cover 3, and the vertical shaft 4 is rotatably connected to the lifting plate 13.

[0044] Specifically, when the output shaft 19 rotates, the output shaft 19 will drive the inner rod 10 to rotate, the inner rod 10 will drive the vertical shaft 4 to rotate, and the vertical shaft 4 will drive the vertical rod 6 and the coil 7 to revolve around the sensor. During the rotation of the output shaft 19, the output shaft 19 will drive the first reciprocating screw 11 to rotate through two mutually meshing transmission gears 12, and the first reciprocating screw 11 will drive the lifting plate 13 to reciprocate up and down, and the lifting plate 13 will drive the vertical shaft 4 to reciprocate up and down on the outer wall of the inner rod 10, and the vertical shaft 4 will drive the vertical rod 6 and the coil 7 to reciprocate up and down. Therefore, the coil 7 will not only revolve around the sensor, but also rise and fall, which can better simulate the complex electromagnetic field environment that the sensor may be in in reality, and make the sensor's detection results more accurate.

[0045] A mounting groove 20 is provided at the top of the above-mentioned detector 1, and a support platform 21 is longitudinally slidably installed in the mounting groove 20. The socket 2 is fixedly installed on the support platform 21, and a spring 22 is installed between the support platform 21 and the inner bottom of the mounting groove 20. When the vertical axis 4 drives the vertical rod 6 to move downward to the extreme position, the bottom of the vertical rod 6 will press against the upper end surface of the support platform 21.

[0046] Specifically, when the vertical rod 6 is pressed downward to the limit position, the bottom of the vertical rod 6 will press onto the support platform 21, and the support platform 21 will move downward and compress the spring 22. When the vertical rod 6 moves upward, the spring 22 will drive the support platform 21 to move upward and reset. Then, the vertical rod 6 that rises and falls will cause the support platform 21 to vibrate up and down, thereby driving the sensor to vibrate up and down to simulate a working environment with a higher load on the sensor, further improving the detection accuracy of the sensor. For example, if the sensor is installed on a moving car or equipment, the moving equipment will cause the sensor to vibrate.

[0047] A hard roller 31 is rotatably mounted on the lower end of the vertical rod 6 , thereby reducing the friction between the bottom of the vertical rod 6 and the support platform 21 .

[0048] Embodiment 4:

[0049] Reference Figure 6-Figure 7 , which is basically the same as the third embodiment, and further, a specific implementation scheme for making the coil 7 intermittently approach and move away from the sensor is specifically added.

[0050] The outer wall of the vertical axis 4 is rotatably connected to a horizontal axis 5 perpendicular to it, and a reciprocating portion for driving the vertical rod 6 to slide back and forth is provided at the end of the horizontal axis 5; the reciprocating portion includes a second reciprocating screw 14 fixedly connected to the end of the horizontal axis 5, and the outer wall of the vertical axis 4 is fixedly connected to a guide rod 15 arranged parallel to the second reciprocating screw 14, wherein the outer wall of the second reciprocating screw 14 is threadedly connected to a translation plate 16 slidably connected to the guide rod 15, and the vertical rod 6 is fixedly connected to the translation plate 16; the end of the second reciprocating screw 14 is fixedly connected to a flexible roller 18, the material of the flexible roller 18 is rubber, and the outer wall is provided with anti-slip grooves, the inner wall of the shielding cover 3 is fixedly connected to a ring-shaped platform 17, and when the vertical axis 4 moves downward to the extreme position, the flexible roller 18 will rest on the ring-shaped platform 17.

[0051] Specifically, when the horizontal axis 5 and the vertical rod 6 move downward to the extreme position, the horizontal axis 5 will drive the flexible roller 18 to rest on the annular table 17. At this time, the horizontal axis 5 revolving around the axis of the vertical axis 4 will drive the flexible roller 18 to roll on the annular table 17, and the flexible roller 18 will drive the horizontal axis 5 to rotate. The rotating horizontal axis 5 will drive the second reciprocating screw 14 to rotate, and the second reciprocating screw 14 will drive the translation plate 16 to slide back and forth laterally on the guide rod 15. The translation plate 16 will drive the vertical rod 6 and the coil 7 to slide back and forth laterally, and the coil 7 will indirectly approach and move away from the sensor, thereby making the magnetic field of the electromagnetic environment more complex, and the detection environment is more in line with or higher than the actual situation, further improving the detection accuracy of the sensor.

[0052] Embodiment five:

[0053] Reference Figure 1-Figure 2 as well as Figure 5-Figure 7, which is basically the same as the fourth embodiment, and further, a specific implementation scheme for heat dissipation of the coil 7 is specifically added.

[0054] An inner tube 25 is fixedly connected inside the vertical rod 6, and a nozzle 26 facing the axis of the shielding cover 3 is fixedly installed on the inner tube 25. The end of the guide rod 15 is fixedly connected to a limiting plate 28, and a telescopic airbag 27 is installed between the translation plate 16 and the limiting plate 28. The telescopic airbag 27 is fixedly connected to an intake pipe 29 and an exhaust pipe 30 connected thereto, and a one-way valve is fixedly installed in the intake pipe 29 and the exhaust pipe 30, and the end of the exhaust pipe 30 is fixedly connected to the inner tube 25.

[0055] Specifically, when the translation plate 16 reciprocates, the translation plate 16 will intermittently squeeze and stretch the telescopic airbag 27. When the telescopic airbag 27 is squeezed, air will be blown to the inner tube 25 through the exhaust pipe 30, and the inner tube 25 will blow the air toward the sensor through the nozzle 26. When the air passes through the inner tube 25 in the vertical rod 6, the vertical rod 6 and the coil 7 can be cooled to ensure the working stability of the coil 7, thereby ensuring the detection accuracy of the sensor. After the heated air is blown to the sensor, the working environment of the sensor can be heated up, which is more in line with the actual working environment and has higher detection accuracy. When the telescopic airbag 27 is stretched, air will be sucked in through the intake pipe 29.

[0056] The top and bottom of the shielding cover 3 are respectively provided with an air inlet 33 and an air outlet 32 ​​, and one-way valves are fixedly installed in the air inlet 33 and the air outlet 32 ​​, so as to facilitate the exchange of air between the shielding cover 3 and the outside.

[0057] The present detection device for sensors in an electromagnetic environment, when in use, inserts the sensor to be detected into the jack 2, connects the sensor to the detector 1, and enables the detector 1 to display the data detected by the sensor. When the sensor is a speed sensor, the detector 1 can be an oscilloscope, a multimeter, or a dedicated speed sensor tester, etc. Before the detection, the mounting frame 24 is driven downward by the lifting device 23, and the mounting frame 24 drives the shielding cover 3 to cover the sensor, and then the coil 7 on the outer wall of the vertical rod 6 is energized to simulate the sensor working in an electromagnetic environment. At this time, the stability of the sensor can be detected by observing whether the data of the detector 1 has obvious jumps.

[0058] During the detection process, the drive motor 8 is started, and the drive motor 8 will drive the output shaft 19 to rotate, the output shaft 19 will drive the inner rod 10 to rotate, the inner rod 10 will drive the vertical axis 4 to rotate, and the vertical axis 4 will drive the vertical rod 6 and the coil 7 to revolve around the sensor through the horizontal axis 5, thereby simulating a dynamic electromagnetic environment to make the detection of the sensor more accurate.

[0059] While the output shaft 19 is rotating, the output shaft 19 will drive the first reciprocating screw 11 to rotate through two mutually meshing transmission gears 12, and the first reciprocating screw 11 will drive the lifting plate 13 to move up and down, and the lifting plate 13 will drive the vertical shaft 4 to move up and down on the outer wall of the inner rod 10, and the vertical shaft 4 will drive the vertical rod 6 and the coil 7 to move up and down through the horizontal axis 5, so that the coil 7 will not only revolve around the sensor, but also move up and down, which can better simulate the complex electromagnetic field environment that the sensor may be in in reality, making the sensor's detection result more accurate.

[0060] When the horizontal axis 5 and the vertical rod 6 move downward to the extreme position, the horizontal axis 5 will drive the flexible roller 18 to rest on the annular table 17. At this time, the horizontal axis 5 revolving around the axis of the vertical axis 4 will drive the flexible roller 18 to roll on the annular table 17, and the flexible roller 18 will drive the horizontal axis 5 to rotate. The rotating horizontal axis 5 will drive the second reciprocating screw 14 to rotate, and the second reciprocating screw 14 will drive the translation plate 16 to slide back and forth laterally on the guide rod 15. The translation plate 16 will drive the vertical rod 6 and the coil 7 to slide back and forth laterally, and the coil 7 will indirectly approach and move away from the sensor, thereby making the magnetic field of the electromagnetic environment more complex, and the detection environment is more in line with or higher than the actual situation, further improving the detection accuracy of the sensor.

[0061] When the translation plate 16 reciprocates, the translation plate 16 will intermittently squeeze and stretch the telescopic airbag 27. When the telescopic airbag 27 is squeezed, air will be blown to the inner tube 25 through the exhaust pipe 30, and the inner tube 25 will blow the air to the sensor through the nozzle 26. When the air passes through the inner tube 25 in the vertical rod 6, the vertical rod 6 and the coil 7 can be cooled to ensure the working stability of the coil 7, thereby ensuring the detection accuracy of the sensor. After the heated air is blown to the sensor, the working environment of the sensor can be heated up, which is more in line with the actual working environment and has higher detection accuracy. When the telescopic airbag 27 is stretched, air will be sucked in through the intake pipe 29.

[0062] When the vertical rod 6 is pressed downward to the limit position, the bottom of the vertical rod 6 will press onto the support platform 21, and the support platform 21 will move downward and compress the spring 22. When the vertical rod 6 moves upward, the spring 22 will drive the support platform 21 to move upward and reset. Therefore, the up and down lifting of the vertical rod 6 will cause the support platform 21 to vibrate up and down, thereby driving the sensor to vibrate up and down to simulate a working environment with a higher load on the sensor, further improving the detection accuracy of the sensor. For example, if the sensor is installed on a moving car or equipment, the moving equipment will cause the sensor to vibrate.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A detection device for a sensor in an electromagnetic environment, comprising a detector (1) with a socket (2) on the top, characterized in that: Also includes: A shielding cover (3) with an opening at the lower end is installed on the top of the detector (1). The jack (2) is located at the inner bottom of the shielding cover (3), a lifting device (23) is fixedly mounted on the detector (1), a telescopic end of the lifting device (23) is fixedly connected to a mounting frame (24), and the shielding cover (3) is fixedly mounted on the mounting frame (24); A vertical shaft (4) is mounted on the inner top of the detector (1). The outer wall of the vertical shaft (4) is provided with a plurality of vertical rods (6) distributed in a circumference, the outer walls of the plurality of vertical rods (6) are all fixedly wound with coils (7), and the shielding cover (3) is provided with a driving unit for driving the vertical shaft (4) to rotate; The driving unit comprises a driving motor (8) fixedly mounted on the top of the shielding cover (3); an output end of the driving motor (8) is fixedly connected to an output shaft (19); a terminal end of the output shaft (19) is connected to the vertical shaft (4) via a connecting portion; The connecting portion comprises an inner rod (10) fixedly connected to the lower end of the output shaft (19); a sliding hole (9) is provided at the upper end of the vertical shaft (4); the sliding hole (9) is longitudinally slidably sleeved on the outer wall of the inner rod (10); and a lifting portion for driving the vertical shaft (4) to move up and down is provided on the shielding cover (3); The lifting part comprises a first reciprocating screw (11) rotatably connected to the shielding cover (3), the first reciprocating screw (11) and the transmission gear (12) being connected via two mutually meshing transmission gears (12), the outer wall of the first reciprocating screw (11) being threadedly connected to a lifting plate (13) slidably connected to the shielding cover (3), and the vertical shaft (4) being rotatably connected to the lifting plate (13); The outer wall of the vertical shaft (4) is rotatably connected to a horizontal shaft (5) perpendicular thereto, and the end of the horizontal shaft (5) is provided with a reciprocating portion for driving the vertical rod (6) to slide back and forth; The top of the detector (1) is provided with a mounting groove (20), a support platform (21) is longitudinally slidably mounted in the mounting groove (20), the socket (2) is fixedly mounted on the support platform (21), a spring (22) is mounted between the support platform (21) and the inner bottom of the mounting groove (20), and when the vertical shaft (4) drives the vertical rod (6) to move downward to an extreme position, the bottom of the vertical rod (6) presses against the upper end surface of the support platform (21).

2. A detection device for sensors in an electromagnetic environment according to claim 1, characterized in that: The reciprocating portion comprises a second reciprocating screw (14) fixedly connected to the end of the horizontal shaft (5); the outer wall of the vertical shaft (4) is fixedly connected to a guide rod (15) arranged parallel to the second reciprocating screw (14); The outer wall of the second reciprocating screw (14) is threadedly connected to a translation plate (16) slidably connected to the guide rod (15), and the vertical rod (6) is fixedly connected to the translation plate (16).

3. A detection device for sensors in an electromagnetic environment according to claim 2, characterized in that: A flexible roller (18) is fixedly connected to the end of the second reciprocating screw (14), and an annular platform (17) is fixedly connected to the inner wall of the shielding cover (3); when the vertical shaft (4) moves downward to an extreme position, the flexible roller (18) rests on the annular platform (17).

4. The detection device for sensors in electromagnetic environment according to claim 2, characterized in that: An inner tube (25) is fixedly connected to the vertical rod (6), and a nozzle (26) facing the axis of the shielding cover (3) is fixedly mounted on the inner tube (25).

5. A detection device for sensors in an electromagnetic environment according to claim 4, characterized in that: The end of the guide rod (15) is fixedly connected to a limit plate (28), a telescopic airbag (27) is installed between the translation plate (16) and the limit plate (28), an air intake pipe (29) and an exhaust pipe (30) which are in communication with the telescopic airbag (27) are fixedly connected to the telescopic airbag (27), and the end of the exhaust pipe (30) is fixedly connected to the inner tube (25).

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