A simple adjustable filter testing device and method

Abstract

The present invention belongs to the technical field of test devices for filtering interference of filters, and discloses a simple adjustable filter test device and method, including a clamping device and a switching device, wherein the clamping device is arranged on one side of the switching device, the clamping device includes a chuck, and the switching device includes a circular main turntable, a circular secondary turntable, a planetary gear, a first driving member, and a second driving member, wherein the first driving member drives the main turntable to rotate, and the second driving member drives the planetary gear to rotate, the planetary gear is arranged above the main turntable, and teeth are arranged on the outer side of the secondary turntable, and the secondary turntable is connected to the planetary gear through the teeth. A groove is arranged on the upper surface of the secondary turntable, and a through hole is arranged at the bottom of the groove, and a filter is placed in the groove, and the feelers at both ends of the chuck respectively pass through the opening of the groove and the through hole to contact the two ends of the filter. The technical scheme realizes the function of automatically switching the filter through a two-stage positioning method, and avoids the wear problem caused by manual disassembly and replacement of the interfaces at both ends of the filter.

Description

Technical Field

[0001] The invention belongs to the technical field of filter interference filtering test devices, and specifically refers to a simple adjustable filter test device and method. Background Art

[0002] In the existing technical standards such as ETSI EN301489, when conducting electromagnetic radiation interference tests on frequency bands above 1 GHz, it is necessary to turn on the WIFI signal. However, the working frequency bands of the WIFI signal itself are relatively large, such as: 2.4GHz to 2.4835GHz, 5.4625GHz to 5.5875GHz, 5.1475GHz to 5.272GHz, 5.7275GHz to 5.8525GHz, and there are many types of WIFI products on the market, some of which only transmit 2.4GHz or 5GHz WIFI signals, and some can transmit 2.4GHz and 5GHz WIFI signals at the same time. Therefore, in the actual test process, every time the WIFI of different frequency bands is replaced, the filter in the test line needs to be manually disassembled and replaced. The manual disassembly and replacement method is very troublesome, not only time-consuming and labor-intensive, but also when disassembling the connected ports, it is easy to cause the ports at both ends of the filter to wear or damage, so that the standing wave ratio of the two ports does not meet the requirements, affecting the accuracy of the test. Summary of the invention

[0003] In order to solve the problem in the prior art that the filter needs to be replaced manually, causing wear of the ports at both ends and affecting the test accuracy, the present invention provides a simple adjustable filter testing device and method.

[0004] The technical solution adopted by the present invention is:

[0005] A simple adjustable filter test device comprises a clamping device and a switching device, wherein the clamping device is arranged at one side of the switching device, and the switching device comprises a circular main rotating disk, a circular secondary rotating disk, a planetary gear set, a first motor, a second motor and a third motor, wherein the first motor drives the main rotating disk to rotate, the planetary gear set is rotationally connected with the main rotating disk, and teeth are arranged on the outer side of the secondary rotating disk;

[0006] The planetary gear set includes a first sun gear, a second sun gear, a planetary gear and a first transmission gear. The first sun gear and the second sun gear are coaxially arranged. The first sun gear is provided with teeth on the outer side. The second sun gear is provided with teeth on the inner side and the outer side. The planetary gear is provided with teeth on the outer side. The planetary gear is arranged between the first sun gear and the second sun gear. The teeth of the planetary gear are meshed with the first sun gear and the second sun gear at the same time. The first transmission gear is coaxially fixedly connected to the top of the planetary gear. The outer teeth of the first transmission gear are meshed with the secondary rotating disk.

[0007] A second transmission wheel is disposed outside the second sun wheel, the second transmission wheel is rotatably connected to the main rotating disk, and the second sun wheel is meshedly connected to the teeth outside the second transmission wheel;

[0008] By setting the second transmission wheel, the driving of the second sun wheel is achieved.

[0009] The second motor drives the first sun gear to rotate, and the third motor drives the second transmission gear to rotate;

[0010] The end surface of the secondary turntable is provided with a groove which is open both at the top and the bottom, and a filter is placed in the groove;

[0011] The clamping device includes a clamping head, and the clamping head has two feelers, and the feelers are arranged on the movement path of the groove in an upper and lower manner. The clamping device includes two working states:

[0012] When in the detection state, the feelers at both ends of the clamp contact with the two ends of the filter;

[0013] When in non-detection state, the feelers at both ends of the clamp are separated from both ends of the filter.

[0014] The rotation of the main turntable drives the secondary turntable to revolve along the circumference of the main turntable, thereby rotating the secondary turntable to the position corresponding to the feeler, and realizing preliminary switching. Then, the first transmission wheel rotates by the cooperation of the planetary gear set, thereby driving the secondary turntable to rotate, and rotating the filter to be called on the secondary turntable to the position corresponding to the feeler, realizing accurate switching.

[0015] The main turntable and the planetary gear set can also be rotated together to realize that the secondary turntable rotates along the circumference of the main turntable while rotating. That is, when the secondary turntable rotates to the position corresponding to the feeler, the filter that needs to be called on the secondary turntable has rotated to the position corresponding to the feeler. The preliminary switching and accurate switching are realized at the same time, which improves the switching efficiency.

[0016] Furthermore, the second motor and the third motor are both equipped with a built-in battery and a PLC controller. This solution not only solves the cumbersome wiring problem, but also enables precise control of the planetary gear set through the PLC controller.

[0017] Furthermore, a first connecting rod is provided at the axis of the planetary wheel, one end of the first connecting rod is fixedly connected to the planetary wheel, and the other end of the first connecting rod is fixedly connected to the first transmission wheel. The synchronous movement of the planetary wheel and the first transmission wheel is achieved through the connection of the first connecting rod.

[0018] Furthermore, a wireless sensor is provided at the bottom of the inner wall of the groove, and the first motor has a built-in battery and a wireless PLC controller, and the wireless sensor is wirelessly connected to the built-in wireless PLC controller of the first motor. When all the wireless sensors in a certain secondary turntable cannot sense the existence of a filter in the corresponding position, a signal will be sent to the wireless PLC controller of the first motor. When the first motor brings the secondary turntable to the position corresponding to the feeler, the secondary turntable will not stop but will directly skip, which can improve the switching efficiency of the filter.

[0019] Furthermore, the wireless PLC controller is a PLC controller with a GRM500 wireless communication module. The wireless PLC controller can be connected wirelessly, solving the cumbersome wiring problem.

[0020] Furthermore, the secondary turntables are arranged in an array above the primary turntable along the circumferential direction of the primary turntable, and a second connecting rod is provided between the secondary turntable and the primary turntable, one end of the second connecting rod is fixedly connected to the primary turntable, and the other end of the second connecting rod is rotatably connected to the secondary turntable. Compared with the solution of directly setting the filter on the primary turntable, by setting the secondary turntable and then setting the filter on the secondary turntable, more filters can be loaded, thereby improving practicality.

[0021] Furthermore, the feelers at both ends of the clamp are communication cables, which can ensure good contact between the feelers and both ends of the filter, thus ensuring the smooth operation of a simple adjustable filter test device.

[0022] A method for testing an adjustable filter includes a simple adjustable filter testing device, and the testing steps include:

[0023] Preparation stage: fix the filter in the groove;

[0024] Sorting stage: The sorting stage includes static sorting or dynamic sorting.

[0025] Static sorting:

[0026] First, the main turntable is driven by the first motor to rotate, thereby driving the secondary turntable to move with the main turntable to the position of the feeler, and the secondary turntable is used as the first priority test; then, any one of the first sun gear and the second sun gear rotates, and the other remains stationary, so that the planetary gear moves with the first sun gear or the second sun gear, thereby driving the first transmission wheel to the side of the secondary turntable of the first priority test and meshing with it; then, the second motor drives the first sun gear to rotate, and the third motor indirectly drives the second sun gear to rotate, and the rotation direction of the first sun gear is opposite to that of the second sun gear, so that the planetary gear drives the first transmission wheel to rotate, thereby driving the secondary turntable of the first priority test to rotate, and the filter that needs to be called on the secondary turntable is switched to the position of the feeler through the self-rotation of the secondary turntable;

[0027] Dynamic sorting:

[0028] The first motor drives the main turntable to rotate, driving the secondary turntable to move with the main turntable, while the second motor drives the first sun gear to rotate, and the third motor indirectly drives the second sun gear to rotate; the rotation direction of the main turntable, the rotation direction of the first sun gear and the rotation direction of the second sun gear are all the same; the rotation speed of the first sun gear is different from the rotation speed of the second sun gear, so that the first transmission wheel, driven by the planetary gear, rotates while the first sun gear rotates; since the secondary turntable is meshed with the first transmission wheel, the secondary turntable can also rotate while the main turntable rotates, and when the filter to be called rotates to the outermost side, the first sun gear and the second sun gear both stop rotating, that is, when the secondary turntable rotates to the position of the feeler, the filter to be called on the secondary turntable has been switched to the position of the feeler;

[0029] Testing phase: The tentacles at both ends of the chuck are retracted and in contact with both ends of the filter; when it is necessary to switch the filter or end the test, the tentacles at both ends of the chuck are opened and separated from both ends of the filter.

[0030] The beneficial effects of the present invention are as follows: by rotating the main turntable, the secondary turntable where the filter to be called is located is driven to the antenna position, thereby realizing the preliminary switching of the filter. In addition, by the self-rotation of the secondary turntable, the filter to be called is switched to the antenna position, thereby realizing the accurate switching of the filter. The two-stage positioning method realizes the function of automatically switching the filter, and avoids the wear problem caused by manual disassembly and replacement of the interfaces at both ends of the filter. Moreover, compared with the construction of cumbersome circuits, the technical solution of realizing filter switching by switching the circuits. This technical solution not only does not require the construction of complex circuits, but is also simpler and more convenient. In addition, compared with the solution in which each secondary turntable is controlled by a motor set in a one-to-one correspondence, the use of many motors can be reduced, thereby reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The figure is a schematic structural diagram of a simple adjustable filter testing device according to an embodiment of the present invention.

[0032] Figure 2 FIG. 4 is a top view of a switching device according to an embodiment of the present invention.

[0033] Figure 3 for Figure 2 A partial enlarged view of point I in the middle.

[0034] Figure 4 for Figure 3 Schematic diagram of the cross-sectional view at AA in the middle.

[0035] Figure 5Schematic diagram of the structure of the filter according to an embodiment of the present invention.

[0036] Figure 6 Schematic diagram of the structure of the secondary turntable according to an embodiment of the present invention.

[0037] In the figure: 1-chuck, 2-main turntable, 3-secondary turntable, 4-groove, 5-through hole, 6-filter, 7-first motor, 12-feeler, 13-wireless sensor, 21-first sun gear, 22-second sun gear, 23-planetary gear, 24-first transmission wheel, 25-first connecting rod, 26-second transmission wheel, 27-second motor, 28-third motor, 29-second connecting rod. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] Example 1

[0040] A simple adjustable filter test device comprises a clamping device and a switching device, wherein the clamping device is arranged at one side of the switching device, and the switching device comprises a circular main rotating disk 2, a circular secondary rotating disk 3, a planetary gear set, a first motor 7, a second motor 27 and a third motor 28, wherein the first motor 7 drives the main rotating disk 2 to rotate, the planetary gear set is rotationally connected with the main rotating disk 2, and teeth are arranged on the outer side of the secondary rotating disk 3;

[0041] The planetary gear set includes a first sun gear 21, a second sun gear 22, a planetary gear 23 and a first transmission gear 24. The first sun gear 21 and the second sun gear 22 are coaxially arranged. The first sun gear 21 is provided with teeth on the outer side. The second sun gear 22 is provided with teeth on the inner side and the outer side. The planetary gear 23 is provided with teeth on the outer side. The planetary gear 23 is arranged between the first sun gear 21 and the second sun gear 22. The teeth of the planetary gear 23 are meshed with the first sun gear 21 and the second sun gear 22 at the same time. The first transmission gear 24 is coaxially fixedly connected to the top of the planetary gear 23. The outer teeth of the first transmission gear 24 are meshed with the secondary turntable 3.

[0042] A second transmission wheel 26 is disposed outside the second sun gear 22. The second transmission wheel 26 is rotatably connected to the main rotating disk 2. The second sun gear 22 is meshed with the teeth outside the second transmission wheel 26.

[0043] By providing the second transmission wheel 26 , the second sun wheel 22 is driven.

[0044] The second motor 27 drives the first sun gear 21 to rotate, and the third motor 28 drives the second transmission gear 26 to rotate;

[0045] The end surface of the secondary turntable 3 is provided with a groove 4 which is open at both the top and the bottom, and a filter 6 is placed in the groove 4;

[0046] The clamping device comprises a clamping head 1, wherein the clamping head 1 has two feelers 12, wherein the feelers 12 are arranged on the moving path of the groove 4 in the upper and lower parts, and the clamping device comprises two working states:

[0047] When in the detection state, that is, when the filter 6 needs to be called, the feelers 12 at both ends of the clamp 1 contact with both ends of the filter 6;

[0048] When in the non-detection state, that is, when the filter 6 is not needed to be called, the feelers 12 at both ends of the clamp 1 are separated from both ends of the filter 6 .

[0049] The rotation of the main turntable 2 drives the secondary turntable 3 to revolve along the circumferential direction of the main turntable 2, thereby rotating the secondary turntable 3 to the position corresponding to the feeler 12, and realizing preliminary switching. Then, the first transmission wheel 24 rotates by itself through the cooperation of the planetary gear set, thereby driving the secondary turntable 3 to rotate by itself, and rotating the filter 6 to be called on the secondary turntable 3 to the position corresponding to the feeler 12, realizing accurate switching.

[0050] The main turntable 2 and the planetary gear set can also rotate together to realize that the secondary turntable 3 rotates while revolving along the circumferential direction of the main turntable 2. That is, when the secondary turntable 3 revolves to the position corresponding to the feeler 12, the filter 6 to be called on the secondary turntable 3 has rotated to the position corresponding to the feeler 12. The preliminary switching and the accurate switching are realized at the same time, and the switching efficiency is improved.

[0051] The second motor 27 and the third motor 28 are both equipped with a built-in battery and a PLC controller. This solution not only solves the cumbersome wiring problem, but also enables precise control of the planetary gear set through the PLC controller.

[0052] The axis of the planetary gear 23 is provided with a first connecting rod 25, one end of the first connecting rod 25 is fixedly connected to the planetary gear 23, and the other end of the first connecting rod 25 is fixedly connected to the first transmission wheel 24. The synchronous movement of the planetary gear 23 and the first transmission wheel 24 is achieved through the connection of the first connecting rod 25.

[0053] A wireless sensor 13 is provided at the bottom of the inner wall of the groove 4. The first motor 7 has a built-in battery and a wireless PLC controller. The wireless sensor 13 is wirelessly connected to the built-in wireless PLC controller of the first motor 7. When all the wireless sensors 13 in a certain secondary turntable 3 cannot sense the existence of the filter 6 in the corresponding position, a signal will be sent to the wireless PLC controller of the first motor 7. When the first motor 7 brings the secondary turntable 3 to the position corresponding to the feeler 12, the secondary turntable 3 will not stop but will directly skip, which can improve the switching efficiency of the filter 6.

[0054] The wireless PLC controller is a PLC controller with a GRM500 wireless communication module. The wireless PLC controller can be connected wirelessly, solving the cumbersome wiring problem.

[0055] The secondary turntables 3 are arranged in an array above the primary turntable 2 along the circumferential direction of the primary turntable 2, and a second connecting rod 29 is provided between the secondary turntable 3 and the primary turntable 2, one end of the second connecting rod 29 is fixedly connected to the primary turntable 2, and the other end of the second connecting rod 29 is rotatably connected to the secondary turntable 3. Compared with the solution of directly setting the filter 6 on the primary turntable 2, by setting the secondary turntable 3 and then setting the filter 6 on the secondary turntable 3, more filters 6 can be loaded, thereby improving practicality.

[0056] The antennae 12 at both ends of the clamp 1 are communication cables. The communication cables can ensure that the antennae 12 are in good contact with both ends of the filter 6, thereby ensuring the smooth operation of a simple adjustable filter test device.

[0057] A method for testing an adjustable filter includes a simple adjustable filter testing device, and the testing steps include:

[0058] Preparation stage: the filter 6 is fixedly accommodated in the groove 4;

[0059] Sorting stage: The sorting stage includes static sorting or dynamic sorting.

[0060] Static sorting:

[0061] First, the main turntable 2 is driven by the first motor 7 to rotate, thereby driving the secondary turntable 3 to move with the main turntable 2 to the position of the feeler 12, and the secondary turntable 3 is used as the first priority test; then, any one of the first sun gear 21 and the second sun gear 22 rotates, and the other remains stationary, so that the planetary gear 23 moves with the first sun gear 21 or the second sun gear 22, thereby driving the first transmission wheel 24 to the side of the secondary turntable 3 of the first priority test and meshing with it; then, the second motor 27 drives the first sun gear 21 to rotate, and at the same time the third motor 28 indirectly drives the second sun gear 22 to rotate, the rotation direction of the first sun gear 21 is opposite to that of the second sun gear 22, so that the planetary gear 23 drives the first transmission wheel 24 to rotate, thereby driving the secondary turntable 3 of the first priority test to rotate, and the filter 6 that needs to be called on the secondary turntable 3 is switched to the position of the feeler 12 through the rotation of the secondary turntable 3;

[0062] Dynamic sorting:

[0063] The first motor 7 drives the main turntable 2 to rotate, driving the secondary turntable 3 to move with the main turntable 2, while the second motor 27 drives the first sun gear 21 to rotate, and the third motor 28 indirectly drives the second sun gear 22 to rotate; the rotation direction of the main turntable 2, the rotation direction of the first sun gear 21 and the rotation direction of the second sun gear 22 are all the same; the rotation speed of the first sun gear 21 is different from the rotation speed of the second sun gear 22, so that the first transmission wheel 24 is driven by the planetary gear 23, and the first transmission wheel 24 rotates while the first sun gear 21 rotates; because the secondary turntable 3 is meshed with the first transmission wheel 24, the secondary turntable 3 can also rotate while the main turntable 2 rotates, and when the filter 6 to be called rotates to the outermost side, the first sun gear 21 and the second sun gear 22 both stop rotating, that is, when the secondary turntable 3 rotates to the position of the feeler 12, the filter 6 to be called on the secondary turntable 3 has been switched to the position of the feeler 12;

[0064] Testing phase: the feelers 12 at both ends of the clamp 1 are retracted and contact the two ends of the filter 6; when the filter 6 needs to be switched or the test is ended, the feelers 12 at both ends of the clamp 1 are opened and separated from the two ends of the filter 6.

[0065] It should be understood that although the present invention has been described in relatively detail through specific implementation methods, these descriptions are not limitations on the patent scope of the present invention. Any changes in form and details made on this basis that do not exceed the scope of protection of the claims are within the scope of protection of the present invention.

Claims

1. A simple adjustable filter test device, comprising a clamping device and a switching device, wherein the clamping device is arranged on one side of the switching device. Features: The switching device comprises a circular main rotating disk (2), a circular secondary rotating disk (3), a planetary gear set, a first motor (7), a second motor (27) and a third motor (28), wherein the first motor (7) drives the main rotating disk (2) to rotate, the planetary gear set is rotationally connected to the main rotating disk (2), and teeth are arranged on the outer side of the secondary rotating disk (3); The planetary gear set comprises a first sun gear (21), a second sun gear (22), a planetary gear (23) and a first transmission gear (24); the first sun gear (21) and the second sun gear (22) are coaxially arranged; teeth are arranged on the outer side of the first sun gear (21); teeth are arranged on the inner side and the outer side of the second sun gear (22); teeth are arranged on the outer side of the planetary gear (23); the planetary gear (23) is arranged between the first sun gear (21) and the second sun gear (22); the teeth of the planetary gear (23) are meshed with the first sun gear (21) and the second sun gear (22); the first transmission gear (24) is coaxially fixedly connected to the top of the planetary gear (23); the outer teeth of the first transmission gear (24) are meshed with the secondary rotating disk (3); A second transmission wheel (26) is provided on the outer side of the second sun gear (22), the second transmission wheel (26) is rotationally connected to the main rotating disk (2), and the second sun gear (22) is meshedly connected with the teeth on the outer side of the second transmission wheel (26); The second motor (27) drives the first sun gear (21) to rotate, and the third motor (28) drives the second transmission gear (26) to rotate; The end surface of the secondary turntable (3) is provided with a groove (4) which is open at both the top and the bottom, and a filter (6) is placed in the groove (4); The clamping device comprises a clamping head (1), wherein the clamping head (1) has two feelers (12), wherein the feelers (12) are arranged on the moving path of the groove (4) at the upper and lower parts, and the clamping device comprises two working states: When in the detection state, the feelers (12) at both ends of the clamp (1) are in contact with both ends of the filter (6); When in a non-detection state, the feelers (12) at both ends of the clamp (1) are separated from both ends of the filter (6).

2. A simple adjustable filter test device according to claim 1, Features: The second motor (27) and the third motor (28) both have built-in batteries and PLC controllers.

3. A simple adjustable filter test device according to claim 1, Features: A first connecting rod (25) is provided at the axis of the planetary gear (23), one end of the first connecting rod (25) is fixedly connected to the planetary gear (23), and the other end of the first connecting rod (25) is fixedly connected to the first transmission wheel (24).

4. A simple adjustable filter test device according to claim 1, Features: A wireless sensor (13) is provided at the bottom of the inner wall of the groove (4); a storage battery and a wireless PLC controller are built into the first motor (7); and the wireless sensor (13) is wirelessly connected to the wireless PLC controller built into the first motor (7).

5. A simple adjustable filter testing device according to claim 4, Features: The wireless PLC controller is a PLC controller with a GRM500 wireless communication module.

6. A simple adjustable filter testing device according to claim 1, Features: The secondary turntables (3) are arranged in an array above the main turntable (2) along the circumferential direction of the main turntable (2), and a second connecting rod (29) is provided between the secondary turntable (3) and the main turntable (2), one end of the second connecting rod (29) is fixedly connected to the main turntable (2), and the other end of the second connecting rod (29) is rotatably connected to the secondary turntable (3).

7. A simple adjustable filter testing device according to claim 1, Features: The antennae (12) at both ends of the clamp (1) are communication cables.

8. A method for testing an adjustable filter, Features: A simple adjustable filter testing device according to any one of claims 1 to 7, wherein the testing steps include: Preparation stage: the filter (6) is fixedly accommodated in the groove (4); Sorting stage: The sorting stage includes static sorting or dynamic sorting. Static sorting: First, the main turntable (2) is driven to rotate by the first motor (7), thereby driving the secondary turntable (3) to move along with the main turntable (2) to the position of the feeler (12), and the secondary turntable (3) is used as the first priority test; then, any one of the first sun gear (21) and the second sun gear (22) is rotated, and the other remains stationary, so that the planetary gear (23) moves along with the first sun gear (21) or the second sun gear (22), thereby driving the first transmission wheel (24) to the side of the secondary turntable (3) of the first priority test and meshing with it. ; Then, the second motor (27) drives the first sun gear (21) to rotate, and the third motor (28) indirectly drives the second sun gear (22) to rotate. The rotation direction of the first sun gear (21) is opposite to that of the second sun gear (22), so that the planetary gear (23) drives the first transmission wheel (24) to rotate, thereby driving the secondary turntable (3) of the first priority test to rotate. Through the rotation of the secondary turntable (3), the filter (6) to be called on the secondary turntable (3) is switched to the position of the feeler (12); Dynamic sorting: The first motor (7) drives the main turntable (2) to rotate, driving the secondary turntable (3) to move along with the main turntable (2), while the second motor (27) drives the first sun gear (21) to rotate, and the third motor (28) indirectly drives the second sun gear (22) to rotate; the rotation direction of the main turntable (2), the rotation direction of the first sun gear (21) and the rotation direction of the second sun gear (22) are all the same; the rotation speed of the first sun gear (21) is different from the rotation speed of the second sun gear (22), so that the first transmission wheel (24) is driven by the planetary gear (23) and the first transmission wheel (24) rotates along with the rotation of the first sun gear (21); because the secondary turntable (3) is meshed with the first transmission wheel (24), the secondary turntable (3) can also rotate along with the rotation of the main turntable (2), that is, when the secondary turntable (3) rotates to the position of the feeler (12), the filter (6) to be called on the secondary turntable (3) has been switched to the position of the feeler (12); During the testing phase, the antennae (12) at both ends of the clamp (1) are retracted and contact the two ends of the filter (6); when it is necessary to switch the filter (6) or to end the test, the antennae (12) at both ends of the clamp (1) are opened and separated from the two ends of the filter (6).

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