Electromagnetic shielding material testing equipment for medical equipment

Abstract

The invention relates to the field of electromagnetic shielding testing, and discloses electromagnetic shielding material testing equipment for medical equipment, which comprises an electromagnetic shielding material testing device, a conveying device, an electromagnetic shielding material carrier and an electromagnetic shielding material transferring device, the electromagnetic shielding material testing device comprises a first driving mechanism, an upper shielding box and a lower shielding box, the first driving mechanism is used for driving the upper shielding box and the lower shielding box to move oppositely or oppositely, and medical instruments are arranged in the upper shielding box and the lower shielding box. An electromagnetic emission device and an electromagnetic interference detection device are respectively mounted in the upper shielding box and the lower shielding box, and electromagnetic waves can pass through the surfaces, close to each other, of the upper shielding box and the lower shielding box; the electromagnetic wave isolating performance of the electromagnetic shielding material can be judged by analyzing the quantity of the detected electromagnetic waves through the electromagnetic interference detection device, and the mode does not need to manually replace different electromagnetic shielding materials, so that the test efficiency can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of electromagnetic shielding testing of materials, and more specifically, to electromagnetic shielding material testing equipment for medical devices. Background Art

[0002] In the field of modern medical equipment, with the rapid development of electronic technology, medical devices are increasingly used in diagnosis, treatment and monitoring. However, with the improvement of internal integration and complexity of medical devices, these devices are easily affected by electromagnetic interference during use, thus affecting their normal operation. Therefore, ensuring that medical devices have good electromagnetic compatibility and can operate stably in complex electromagnetic environments is the key to ensuring the performance and safety of medical equipment.

[0003] The authorization announcement number is CN207623388U utility model patent, which discloses a 5G motherboard calibration comprehensive test electromagnetic shielding box. When working: the product is placed on the product carrier, the start button switch is pressed, the power supply and control components control the in and out cylinders to drive the product carrier to move, and the switch is sensed after hitting the micro switch module. The first cylinder and the fixture pressing cylinder are pressed down at the same time, the upper box cover and the lower frame are closed, and the slide test fixture presses the product for testing.

[0004] As mentioned above, when conducting electromagnetic compatibility tests, it is usually necessary to place items in a shielding box. When testing multiple items, the shielding box needs to be opened and closed continuously for manual replacement, which is inefficient. Moreover, when multiple devices are working simultaneously in the shielding box, the reliability of the test results cannot be guaranteed due to mutual interference between the devices, thereby failing to provide effective data support and technical guarantee for the design optimization of the equipment. Summary of the invention

[0005] The present invention aims to overcome the defects of the above-mentioned prior art and provide an electromagnetic shielding material testing device for medical devices, which is used to solve the technical problem of low efficiency when testing multiple different items and constantly opening and closing the shielding box for replacement.

[0006] The technical solution adopted by the present invention is an electromagnetic shielding material testing equipment for medical devices, including an electromagnetic shielding material testing device, a conveying device and an electromagnetic shielding material carrier; the electromagnetic shielding material testing device includes a driving mechanism, an upper shielding box and a lower shielding box, the driving mechanism is used to drive the upper shielding box and the lower shielding box to move toward or oppositely, the upper shielding box and the lower shielding box are both provided with medical devices, the upper shielding box and the lower shielding box are respectively installed with an electromagnetic transmitting device and an electromagnetic interference detection device, and the upper shielding box and the lower shielding box can pass electromagnetic waves at their close ends; a plurality of electromagnetic shielding material carriers are arranged on the conveying device, the electromagnetic shielding material carriers are used to carry electromagnetic shielding materials, and the electromagnetic shielding material can be moved between the upper shielding box and the lower shielding box by driving the electromagnetic shielding material carrier to move through the conveying device.

[0007] During the electromagnetic shielding test, a variety of different test materials are placed in several electromagnetic shielding material carriers respectively, and then the electromagnetic shielding material carriers are driven by a conveying device to move different electromagnetic shielding materials between the upper shielding box and the lower shielding box, so that different electromagnetic shielding materials can be tested; during the test, the upper shielding box and the lower shielding box are driven by a driving mechanism to move toward each other until they contact the electromagnetic shielding material carrier. At this time, the electromagnetic shielding material separates the upper shielding box and the lower shielding box, and then the electromagnetic transmitting device transmits electromagnetic waves, and the electromagnetic interference detection device detects electromagnetic waves. The electromagnetic interference detection device analyzes the amount of electromagnetic waves detected to determine the performance of the electromagnetic shielding material in isolating electromagnetic waves; this method does not require manual replacement of different electromagnetic shielding materials, and can effectively improve test efficiency.

[0008] Start the medical devices in the upper shielding box and the lower shielding box to work at the same time, adjust the output frequency, strength and mode of the electromagnetic transmitting device in the upper shielding box to simulate different electromagnetic environments, monitor the working status of the medical devices in the lower shielding box through the electromagnetic interference detection device in the lower shielding box, and record whether there is mutual interference between the two medical devices under different parameter settings, the intensity and type of interference, and achieve efficient and accurate electromagnetic shielding effect testing through automated testing processes and precise control, which can test the stability and reliability of medical devices in complex electromagnetic environments.

[0009] The test process is precisely controlled by a driving mechanism, the conveying device quickly replaces the electromagnetic shielding material, the upper shielding box and the lower shielding box maintain a stable test environment, and the distance from the electromagnetic shielding material is flexibly adjusted, so as to obtain comprehensive evaluation data; the device can also perform initial mutual interference testing through the upper shielding box and the lower shielding box, so as to optimize the test parameters and provide benchmark data for subsequent shielding effects.

[0010] Furthermore, the electromagnetic shielding material carrier is a placement frame provided on the conveying device, and the electromagnetic shielding material can be set up in the placement frame. The two ends of the placement frame are used to respectively connect the end of the upper shielding box through which the electromagnetic wave passes and the end of the lower shielding box through which the electromagnetic wave passes, so as to form an electromagnetic shielding chamber. The electromagnetic shielding chamber formed by the connection can effectively isolate external electromagnetic interference, thereby improving the accuracy of the test. The conveying device is a conveyor belt, and the placement frames are evenly arranged on the outer circumference of the conveyor belt. The electromagnetic shielding material can be suspended and set up in the placement frame, which is more convenient for loading and unloading, and can effectively improve the test speed.

[0011] Furthermore, an electromagnetic shielding material transfer device is installed in the electromagnetic shielding material carrier, and the electromagnetic shielding material transfer device can transfer the electromagnetic shielding material into the upper shielding box when the upper shielding box contacts the electromagnetic shielding material carrier downward. After being transferred into the upper shielding box, the next placement frame is moved between the upper shielding box and the lower shielding box with the electromagnetic shielding material, and the upper shielding box and the lower shielding box are close to the placement frame, so that the two pieces of electromagnetic shielding material are stacked together, and the electromagnetic resistance performance test of the stacked multi-layer electromagnetic shielding material can be carried out, and this stacking process is automatically completed by the electromagnetic shielding material transfer device, with a high degree of automation, which can effectively improve the test efficiency.

[0012] Furthermore, the electromagnetic shielding material transfer device includes a plurality of downward pressing and lifting mechanisms and an electromagnetic shielding material fixing mechanism. The downward pressing and lifting mechanism can transfer the electromagnetic shielding material to the upper shielding box by pressing down the upper shielding box, and the electromagnetic shielding material fixing mechanism is used to fix the electromagnetic shielding material transferred to the upper shielding box. The electromagnetic shielding material is conveyed to the upper shielding box while the upper shielding box is pressed down, and then the electromagnetic shielding material is fixed in the upper shielding box by the electromagnetic shielding material fixing mechanism. This simultaneous action greatly saves time and can effectively improve the test efficiency.

[0013] Furthermore, the downward pressure and lifting mechanism is correspondingly arranged on the two opposite side walls of the electromagnetic shielding material carrier, and the downward pressure and lifting mechanism includes an air pumping component, a connecting tube and a pneumatic telescopic rod. The air pumping component is installed on the placement frame, and gas can be output by pressing down the upper shielding box. The pneumatic telescopic rod is arranged on the inner side of the placement frame, and its air inlet end is connected to the air outlet end of the air pumping component through the connecting tube, so that the electromagnetic shielding material can be pushed from the placement frame into the upper shielding box. This method cleverly utilizes the power of the upper shielding box. When the downward pressure and lifting mechanism is not powered, the electromagnetic shielding material can also be lifted, which is more energy-saving, and the simultaneity and coordination of the upper shielding box and the electromagnetic shielding material are better.

[0014] Furthermore, there are at least two pneumatic telescopic rods, which are correspondingly arranged on the two inner sides of the placement frame. There are at least two pneumatic telescopic rods, and the corresponding arrangement is mainly to ensure the stability of the lifting. Generally, three to four are the best. This method of lifting through gas transmission has a simpler structure and higher timeliness of action.

[0015] Furthermore, the electromagnetic shielding material fixing mechanism includes a plurality of fixing components, which are correspondingly arranged on two opposite side walls of the upper shielding box. One electromagnetic shielding material can be fixed by two corresponding fixing components, and generally two to four fixing components can be correspondingly arranged. More fixing components can increase the firmness and stability of fixing the electromagnetic shielding material.

[0016] Furthermore, the fixed component includes a magnetic shielding chamber, a protruding hole, a magnetic shielding film, a telescopic protrusion and a second driving mechanism. The magnetic shielding chamber is arranged in the side wall of the upper shielding box, the magnetic shielding chamber is connected to the inner side of the upper shielding box through the protruding hole, the magnetic shielding film is fixed on the protruding hole, and is used to close the protruding hole. The telescopic protrusion is telescopically arranged in the magnetic shielding chamber, and the second driving mechanism is installed in the magnetic shielding chamber, and can drive the telescopic protrusion to push the middle part of the magnetic shielding film out of the protruding hole; so as to support the electromagnetic shielding material and realize the fixation of the electromagnetic shielding material. When the placement frame and the upper shielding box are in the same vertical direction, the downward pressing and lifting mechanism and the fixed component are in the same vertical direction. The downward pressing and lifting mechanism can stably lift the electromagnetic shielding material into the upper shielding box, and the material of the magnetic shielding chamber and the magnetic shielding film can prevent electromagnetic interference from being generated when the second driving mechanism is started, which solves the problems of low efficiency, inaccurate test results and inability to effectively evaluate the mutual interference of equipment in the traditional method, and provides reliable data support and technical guarantee for the research and development and market application of medical devices.

[0017] Furthermore, the fixing components are arranged in the vertical direction on the two opposite side walls of the upper shielding box. The fixing components are mainly used to fix the electromagnetic shielding material in the upper shielding box to prevent the electromagnetic shielding material from falling from the upper shielding box, and can also stop the electromagnetic shielding material of the next layer. By setting multiple fixing components in the upper shielding box, multiple layers of electromagnetic shielding materials can be fixed, and the anti-electromagnetic interference test of the superposition of multiple layers of electromagnetic shielding materials can be realized, which has a higher degree of automation and strong practicality; and the order of superposition of electromagnetic shielding materials can be adjusted according to the arrangement of electromagnetic shielding materials on the conveyor belt, and the distance between the electromagnetic shielding materials when they are superimposed can be controlled by fixing components at different heights, so that the selection of electromagnetic shielding materials, the order of superposition, the distance of superposition and the position of electromagnetic shielding materials are realized. The automatic and precise control can achieve the effect of efficient and accurate testing of electromagnetic shielding, and can also test the stability and reliability of electromagnetic shielding of medical devices in complex electromagnetic environments using different electromagnetic shielding materials in different superposition modes.

[0018] Furthermore, the electromagnetic shielding material transfer device also includes an extrusion component, which includes a mounting hole, a spring and an extrusion block. The upper shielding box is provided with a mounting hole, a spring is installed in the mounting hole, and the mounting hole port is provided with an extrusion block fixedly connected to one end of the spring, and the extrusion block is used to press down the air pumping component. When multiple layers of electromagnetic shielding material are fixed in the upper shielding box, the corresponding height of each layer of the pneumatic telescopic rod is different. When a layer of electromagnetic shielding material is stopped by the adjacent upper and lower fixed components, the telescopic end of the pneumatic telescopic rod can no longer rise. At this time, the spring is deformed, and the upper shielding box continues to dock with the placement frame downward, so that it can adapt to different lifting heights and meet the requirements of different stacking distances of different electromagnetic shielding materials.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. During the electromagnetic shielding test, a variety of different test materials are placed in several electromagnetic shielding material carriers respectively, and then the electromagnetic shielding material carriers are driven by a conveying device to move different electromagnetic shielding materials between the upper shielding box and the lower shielding box, so that different electromagnetic shielding materials can be tested; this method does not require manual replacement of different electromagnetic shielding materials, which can effectively improve the test efficiency.

[0021] 2. Start the medical devices in the upper shielding box and the lower shielding box to work at the same time, adjust the output frequency, strength and mode of the electromagnetic transmitting device in the upper shielding box to simulate different electromagnetic environments, monitor the working status of the medical devices in the lower shielding box through the electromagnetic interference detection device in the lower shielding box, and record whether there is mutual interference between the two medical devices under different parameter settings, the intensity and type of interference. Through automated testing procedures and precise control, efficient and accurate electromagnetic shielding effect testing is achieved, which can test the stability and reliability of medical devices in complex electromagnetic environments.

[0022] 3. The test process is precisely controlled by the driving mechanism. The conveying device quickly replaces the electromagnetic shielding material. The upper and lower shielding boxes maintain a stable test environment and flexibly adjust the distance from the electromagnetic shielding material, so as to obtain comprehensive evaluation data. The device can also perform initial mutual interference tests through the upper and lower shielding boxes, so as to optimize the test parameters and provide benchmark data for subsequent shielding effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic structural diagram of the electromagnetic shielding material testing device of the present invention.

[0025] Figure 3It is a schematic structural diagram of the pumping component of the present invention.

[0026] Figure 4 It is a structural schematic diagram of the downward pressing and lifting mechanism of the present invention.

[0027] Figure 5 It is a schematic structural diagram of the extrusion assembly of the present invention.

[0028] Figure 6 It is a schematic structural diagram of the electromagnetic shielding material fixing mechanism of the present invention.

[0029] Figure 7 For the present invention Figure 6 A magnified view of the local structure at point A.

[0030] In the figure: 1. conveying device; 2. electromagnetic shielding material testing device; 3. electromagnetic shielding material carrier; 4. driving mechanism one; 5. upper shielding box; 6. lower shielding box; 7. electromagnetic shielding material transfer device; 8. downward pressure lifting mechanism; 9. air pumping component; 10. connecting cylinder; 11. pneumatic telescopic rod; 12. extrusion block; 13. fixing assembly; 14. magnetic shielding chamber; 15. extension hole; 16. magnetic shielding film; 17. telescopic protrusion; 18. driving mechanism two; 19. connecting rod; 20. electromagnetic shielding material; 21. air pumping rod; 22. air cylinder; 23. extrusion assembly; 24. electromagnetic shielding material fixing mechanism; 25. sliding cylinder; 26. mounting hole; 27. limit strip; 28. magnetic block; 29. ​​electromagnet; 30. mounting frame. DETAILED DESCRIPTION

[0031] The drawings of the present invention are only for illustrative purposes and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0032] like Figure 1As shown, the present scheme discloses an electromagnetic shielding material testing device for medical devices, comprising: a conveying device 1, an electromagnetic shielding material testing device 2, an electromagnetic shielding material carrier 3 and an electromagnetic shielding material transfer device 7; the conveying device 1 is a conveyor belt, and the electromagnetic shielding material testing device 2 is used in conjunction with the conveyor belt; a plurality of electromagnetic shielding material carriers 3 are arranged on the electromagnetic shielding material carrier 3, and the electromagnetic shielding material carrier 3 is a placement frame installed on the conveyor belt; the driving device of the conveyor belt is subjected to electromagnetic shielding treatment, such as isolation with an electromagnetic shielding shell to prevent affecting the test; specifically, the conveyor belt has a belt transmission system for transmitting power, the belt transmission system transmits power to the conveyor belt, the belt transmission system passes through the wall of the electromagnetic shielding shell, and has a shielding device to prevent it from generating electromagnetic interference, and the shielding device includes a shielding cylinder, the shielding cylinder surrounds the wall-penetrating part of the belt transmission system to prevent electromagnetic interference, and the shielding cylinder is made of a highly conductive material.

[0033] like Figure 2 As shown, the electromagnetic shielding material testing device 2 includes a driving mechanism 4, the top of the driving mechanism 4 is fixedly connected to an electromagnetic shielding shell, a servo motor is installed in the electromagnetic shielding shell, a movable groove is opened in the electromagnetic shielding shell, a bidirectional lead screw is rotatably connected in the movable groove, and the output end of the servo motor is fixedly connected to one end of the bidirectional lead screw; a pair of screw sleeves are symmetrically connected to the threads on the bidirectional lead screw, and the outer circumferences of the pair of screw sleeves are respectively connected to connecting rods 19, and the pair of connecting rods 19 are respectively fixedly connected to the upper shielding box 5 and the lower shielding box 6.

[0034] Among them, the driving mechanism 4 is a key part of the electromagnetic shielding material testing device 2, the conveyor belt is arranged between the upper shielding box 5 and the lower shielding box 6, the conveyor belt is a structural component for supporting and moving the electromagnetic shielding material 20, and the top of the driving mechanism 4 is connected to an electromagnetic shielding shell to ensure that the key components are not affected by external electromagnetic interference; the electromagnetic shielding material 20 in this scheme is a plate, which can just block the closed frame, thereby realizing the separation of the upper shielding box 5 and the lower shielding box 6.

[0035] The upper shielding box 5 and the lower shielding box 6 are close to each other, and the adjacent ends can pass electromagnetic signals, while the other end faces shield electromagnetic signals. The upper shielding box 5 and the lower shielding box 6 can be made of metal electromagnetic shielding material 20 or absorbing material, which is a well-known technology in the field and will not be described in detail here.

[0036] The medical devices to be tested are placed in the upper shielding box 5 and the lower shielding box 6 respectively. The electromagnetic transmitting device and the electromagnetic interference detection device are installed in the upper shielding box 5 and the lower shielding box 6 respectively. At the beginning of the detection, the electromagnetic shielding material 20 is not placed in the initial placement frame so that the mutual interference test between the medical devices can be carried out first; Regarding the installation of the electromagnetic shielding material 20: specifically, a plurality of protrusions of the same height can be set on the inner surface of the placement frame, and the electromagnetic shielding material 20 is installed by the support of the protrusions, or the protrusions may not be set, and the pneumatic telescopic rod 11 mentioned in the subsequent part of this scheme can be used for support to realize the suspended installation and placement of the electromagnetic shielding material 20.

[0037] Start the medical devices in the upper shielding box 5 and the lower shielding box 6 to work at the same time, adjust the output frequency, intensity and mode of the electromagnetic transmitting device in the upper shielding box 5 to simulate different electromagnetic environments, monitor the working status of the medical devices in the lower shielding box 6 through the electromagnetic interference detection device in the lower shielding box 6, and record whether there is mutual interference between the two medical devices under different parameter settings, as well as the intensity and type of interference. The electromagnetic transmitting device and the electromagnetic interference detection device belong to the prior art and will not be described in detail here.

[0038] By adjusting the frequency of the electromagnetic transmitting device to cover all frequency bands that the medical device may encounter, and testing different electromagnetic transmitting modes such as continuous wave, pulse wave, etc., the interference situation can be comprehensively evaluated. The purpose of conducting mutual interference test between two medical devices is to fully understand the interference situation under unshielded conditions, optimize the test parameters, and provide benchmark data for subsequent shielding effect tests; it not only helps to design more effective shielding schemes and improve the electromagnetic compatibility and reliability of products, but also ensures the stability of medical devices in actual use, meets relevant standards and regulatory requirements, and provides guarantees for product market access and user satisfaction.

[0039] like Figure 3 As shown, the electromagnetic shielding material transfer device 7 includes a plurality of downward pressing and lifting mechanisms 8 arranged on the placement frame. The downward pressing and lifting mechanisms 8 can transfer the electromagnetic shielding material 20 to the upper shielding box 5 by pressing down the upper shielding box 5. The downward pressing and lifting mechanisms 8 are correspondingly arranged on the two opposite side walls of the placement frame.

[0040] like Figure 4As shown, the downward pressure lifting mechanism 8 includes an air pumping component 9, a connecting tube 10 and a pneumatic telescopic rod 11. The air pumping component 9 is installed on the placement frame, and can output gas by pressing down the upper shielding box 5. The pneumatic telescopic rod 11 is arranged on the inner side of the placement frame to support the electromagnetic shielding material 20. Its air inlet end is connected with the air outlet end of the air pumping component 9 through the connecting tube 10, and can push the electromagnetic shielding material 20 from the placement frame into the upper shielding box 5. Specifically, the connecting tube 10 is arranged on the placement frame, located at the bottom of the air pumping rod 21 and connected to the air pumping component 9, and the telescopic end of the pneumatic telescopic rod 11 is used to lift the electromagnetic shielding material 20.

[0041] Specifically, the inflation component 9 includes a pair of symmetrical air cylinders 22 opened on the placement frame, and an inflation rod 21 is slidably connected inside the air cylinder 22. A spring can be arranged between the inflation rod 21 and the air cylinder 22. The spring is mainly used for the restoration of the inflation component 9, that is, the shortening of the pneumatic telescopic rod 11. The inflation component 9 can be an air pump, an air balloon, etc., which is a technology well known to the staff in this field and will not be described in detail here.

[0042] like Figure 5 As shown, the electromagnetic shielding material transfer device 7 also includes an electromagnetic shielding material fixing mechanism 24 arranged in the upper shielding box 5, which is used to fix the electromagnetic shielding material 20 transferred to the upper shielding box 5; the electromagnetic shielding material fixing mechanism 24 includes a plurality of fixing components 13, and the fixing components 13 are correspondingly arranged on the two opposite side walls of the upper shielding box 5. Specifically, the bottom of the upper shielding box 5 is provided with an installation frame 30 that is larger than its wall thickness, and the electromagnetic shielding material fixing mechanism 24 is installed on the installation frame 30.

[0043] like Figure 6 and 7 As shown, a plurality of fixing components 13 are arranged along the vertical direction on two opposite side walls of the upper shielding box 5, and the fixing components 13 include a magnetic shielding chamber 14, an extension hole 15, a magnetic shielding film 16, a telescopic protrusion 17 and a driving mechanism 18. The magnetic shielding chamber 14 is arranged in the side wall of the upper shielding box 5, and the magnetic shielding chamber 14 is connected to the inner side of the upper shielding box 5 through the extension hole 15. The magnetic shielding film 16 is fixed on the extension hole 15 to close the extension hole 15. The telescopic protrusion 17 is telescopically arranged in the magnetic shielding chamber 14. The driving mechanism 18 is installed in the magnetic shielding chamber 14, and can drive the telescopic protrusion 17 to push the middle part of the magnetic shielding film 16 out of the extension hole 15.

[0044] Specifically, the magnetic shielding box is embedded in the inner wall of the installation frame 30 to form a magnetic shielding chamber 14, and the extension hole 15 on the magnetic shielding box is embedded with a magnetic shielding film 16, and the material of the magnetic shielding film 16 is a flexible magnetic polymer material; a sliding cylinder 25 is installed in the magnetic shielding chamber 14, and a telescopic protrusion 17 is slidably connected in the sliding cylinder 25, and a plurality of evenly distributed limit strips 27 are fixedly connected to the outside of the telescopic protrusion 17, and one end of the plurality of limit strips 27 is connected to the sliding cylinder 25.

[0045] The driving mechanism 18 can be an electromagnet 29 and a magnetic block 28 . The electromagnet 29 is installed in the sliding cylinder 25 , and the magnetic block 28 is installed at one end of the telescopic protrusion 17 close to the electromagnet 29 .

[0046] like Figure 5 As shown, the electromagnetic shielding material transfer device 7 also includes an extrusion assembly 23, which includes a mounting hole 26, a spring and an extrusion block 12. The mounting frame 30 is provided with a mounting hole 26 corresponding to the position of the gas-inflating component 9, and a spring is installed in the mounting hole 26. One end of the spring is fixedly connected to the extrusion block 12; the elastic force of the spring is much greater than the elastic force of the spring between the gas-inflating rod 21 and the gas cylinder 22. The extrusion block 12 is arranged at the lower end of the upper shielding box 5, and is used to press down the gas-inflating component 9 to generate gas.

[0047] Working principle:

[0048] First, the medical devices to be tested are placed in the upper shielding box 5 and the lower shielding box 6 respectively, and different electromagnetic shielding materials 20 are placed in multiple placement frames on the conveyor belt. After testing the interference data between the medical devices in the upper shielding box 5 and the lower shielding box 6, the conveyor belt is started, and the electromagnetic transmitting device and the electromagnetic interference detection device are started to test the medical devices in the upper shielding box 5 and the lower shielding box 6 to observe whether there is electromagnetic interference, and different test parameters are set. Subsequently, the conveyor belt is started, and the conveyor belt drives multiple electromagnetic shielding material carriers 3 to move, so that the electromagnetic shielding materials 20 in the placement frames are moved successively between the upper shielding box 5 and the lower shielding box 6, so as to test the electromagnetic shielding effect of these materials;

[0049] By starting the servo motor in the electromagnetic shielding shell, the bidirectional screw rod is driven to rotate, so that the upper shielding box 5 and the lower shielding box 6 are close to each other, wherein the end sides close to each other can pass electromagnetic signals, while the other surfaces shield electromagnetic signals. The movement of the upper shielding box 5 and the lower shielding box 6 drives the installation frame 30 to move synchronously. As the movement occurs, the extrusion block 12 squeezes the air pumping rod 21, so that the air cylinder 22 generates gas. The generated gas provides power to the pneumatic telescopic rod 11 through the connecting tube 10, so that the telescopic end of the pneumatic telescopic rod 11 lifts the electromagnetic shielding material 20 upward. After the electromagnetic shielding material 20 is lifted up, it enters the installation frame 30;

[0050] At this time, by starting the electromagnet 29 set in the installation frame 30, the electromagnet 29 generates a repulsive force on the magnetic block 28, so that the telescopic protrusion 17 pushes the middle part of the magnetic shielding film 16 out of the extension hole 15, so that the bottom of the electromagnetic shielding material 20 is supported, so that it can be fixed in the installation frame 30, so that the electromagnetic shielding effect of the material can be tested. If it is necessary to test the electromagnetic shielding effect of multiple electromagnetic shielding materials 20 in combination, this operation can be repeated. When the second electromagnetic shielding material 20 is squeezed into the installation frame 30, the first electromagnetic shielding material 20 will be fixed and cannot move. Then, by starting the electromagnet 29 below in turn, multiple electromagnetic shielding materials 20 can be fixed for testing. After completion, the electromagnet 29 can be controlled to reset one by one from bottom to top, and the fixed multiple electromagnetic shielding materials 20 are dropped one by one from bottom to top and placed in the placement frame, and the entire test process is completed.

[0051] By testing the shielding effects of different electromagnetic shielding materials 20 on electromagnetic interference, the best electromagnetic shielding material 20 can be selected for application in the design of medical devices, and the electromagnetic shielding effects of different electromagnetic shielding materials 20 on medical devices can be accurately tested, thereby optimizing the electromagnetic compatibility design of medical devices and ensuring their stability and reliability in complex electromagnetic environments, thereby providing reliable data support and technical guarantees for the research and development and market application of medical devices.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A test equipment for electromagnetic shielding materials for medical devices, characterized in that: It comprises an electromagnetic shielding material testing device (2), a conveying device (1) and an electromagnetic shielding material carrier (3); The electromagnetic shielding material testing device (2) comprises a driving mechanism (4), an upper shielding box (5) and a lower shielding box (6); the driving mechanism (4) is used to drive the upper shielding box (5) and the lower shielding box (6) to move toward or away from each other; medical equipment is provided in the upper shielding box (5) and the lower shielding box (6); an electromagnetic transmitting device and an electromagnetic interference detecting device are respectively installed in the upper shielding box (5) and the lower shielding box (6); and electromagnetic waves can pass through the upper shielding box (5) and the lower shielding box (6) at their respective ends; The conveying device (1) is provided with a plurality of electromagnetic shielding material carriers (3), and the electromagnetic shielding material carriers (3) are used to carry the electromagnetic shielding material (20). The electromagnetic shielding material carriers (3) are driven to move by the conveying device (1), so that the electromagnetic shielding material (20) can be moved between the upper shielding box (5) and the lower shielding box (6).

2. The electromagnetic shielding material testing equipment for medical devices according to claim 1, characterized in that: The electromagnetic shielding material carrier (3) is a placement frame arranged on the conveying device (1), and the electromagnetic shielding material (20) can be placed in the placement frame. The two ends of the placement frame are used to respectively connect to the upper shielding box (5) through the electromagnetic wave end and the lower shielding box (6) through the electromagnetic wave end.

3. The electromagnetic shielding material testing equipment for medical devices according to claim 2, characterized in that: An electromagnetic shielding material transfer device (7) is installed in the electromagnetic shielding material carrier (3), and the electromagnetic shielding material transfer device (7) can transfer the electromagnetic shielding material (20) into the upper shielding box (5) when the upper shielding box (5) contacts the electromagnetic shielding material carrier (3) downward.

4. The electromagnetic shielding material testing equipment for medical devices according to claim 3, characterized in that: The electromagnetic shielding material transfer device (7) comprises a plurality of downward pressing and lifting mechanisms (8) and an electromagnetic shielding material fixing mechanism (24); the downward pressing and lifting mechanism (8) can transfer the electromagnetic shielding material (20) into the upper shielding box (5) by pressing down the upper shielding box (5); and the electromagnetic shielding material fixing mechanism (24) is used to fix the electromagnetic shielding material (20) transferred into the upper shielding box (5).

5. The electromagnetic shielding material testing equipment for medical devices according to claim 4, characterized in that: The downward pressure lifting mechanism (8) comprises an air pumping component (9), a connecting tube (10) and a pneumatic telescopic rod (11); the air pumping component (9) is mounted on the placement frame and can output gas by pressing down the upper shielding box (5); the pneumatic telescopic rod (11) is arranged on the inner side of the placement frame, and its air inlet end is connected to the air outlet end of the air pumping component (9) through the connecting tube (10), so that the electromagnetic shielding material (20) can be pushed from the placement frame into the upper shielding box (5).

6. The electromagnetic shielding material testing equipment for medical devices according to claim 5, characterized in that: There are no less than two pneumatic telescopic rods (11), and the pneumatic telescopic rods (11) are correspondingly arranged on the two inner sides of the placement frame.

7. The electromagnetic shielding material testing equipment for medical devices according to claim 5, characterized in that: The electromagnetic shielding material fixing mechanism (24) comprises a plurality of fixing components (13), and the fixing components (13) are correspondingly arranged on two opposite side walls of the upper shielding box (5).

8. The electromagnetic shielding material testing equipment for medical devices according to claim 7, characterized in that: The fixing assembly (13) comprises a magnetic shielding chamber (14), an extension hole (15), a magnetic shielding film (16), a telescopic protrusion (17) and a second driving mechanism (18); the magnetic shielding chamber (14) is arranged in the side wall of the upper shielding box (5), the magnetic shielding chamber (14) is connected to the inner side of the upper shielding box (5) through the extension hole (15), the magnetic shielding film (16) is fixed on the extension hole (15) and is used to close the extension hole (15), the telescopic protrusion (17) is telescopically arranged in the magnetic shielding chamber (14), and the second driving mechanism (18) is installed in the magnetic shielding chamber (14) and can drive the telescopic protrusion (17) to push the middle part of the magnetic shielding film (16) out of the extension hole (15).

9. The electromagnetic shielding material testing equipment for medical devices according to claim 7, characterized in that: A plurality of the fixing components (13) are arranged on two opposite side walls of the upper shielding box (5) along the vertical direction.

10. The electromagnetic shielding material testing equipment for medical devices according to claim 9, characterized in that: The electromagnetic shielding material transfer device (7) also includes an extrusion component (23), the extrusion component (23) includes a mounting hole (26), a spring and an extrusion block (12), the upper shielding box (5) is provided with a mounting hole (26), a spring is installed in the mounting hole (26), and the end of the mounting hole (26) is provided with an extrusion block (12) fixedly connected to one end of the spring, and the extrusion block (12) is used to press down the inflation component (9).

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