Bottom surface workbench of all-electric-wave radio frequency laboratory and all-electric-wave radio frequency laboratory

Abstract

The utility model belongs to the field of automobile radio testing, and discloses a bottom surface workbench of a full-radio-wave radio frequency laboratory and the full-radio-wave radio frequency laboratory. The bottom workbench comprises a full-wave-band shielding base station and a full-wave-band testing rotary table. The full-wave-band test rotary table comprises a rotation driving mechanism, a shielding bottom plate structure, a connection supporting structure, a supporting structure and a wave absorbing layer. Wherein the connecting and supporting structure and the supporting structure jointly support a tested object, the surface, close to the tested object, of the supporting structure is used for bearing the tested object, and the connecting and supporting structure is used for supporting the supporting structure and dispersing and transmitting pressure, applied to the supporting structure, of the tested object to the shielding bottom plate structure. According to the bottom surface workbench of the full-radio-wave radio frequency laboratory and the full-radio-wave radio frequency laboratory, it is guaranteed that an object to be tested can be effectively supported, and multi-path interference from the ground can be effectively restrained.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile radio test, especially relates to a bottom workbench of full electric wave radio frequency laboratory and full electric wave radio frequency laboratory. BACKGROUND

[0002] Electromagnetic compatibility test is the key link of evaluating the electronic and electrical equipment in the car interior in its predetermined electromagnetic environment normal work, and does not constitute unacceptable electromagnetic interference to the environment other equipment. Radio frequency laboratory as the core facility of the test, through the inner wall laying wave absorbing material to simulate free space environment, and utilize shielding shell isolation external electromagnetic interference, provide controlled test environment for the test equipment.

[0003] With the automobile radio total test more and more complex, involve the requirement of more and more multi-band comprehensive test, the existing half electric wave radio frequency laboratory gradually begins to show the drawbacks, the half electric wave radio frequency laboratory already can not satisfy the existing test requirement, its main problem is only through the steel structure support the tested vehicle, can guarantee the tested vehicle in the half electric wave radio frequency laboratory to get effective support on the basis, and can not restrain the multipath interference from the ground. UTILITY MODEL CONTENT

[0004] According to an aspect of the utility model, the utility model provides a bottom workbench of full electric wave radio frequency laboratory, both guarantee that the object to be tested can get effective support, can effectively restrain the multipath interference from the ground.

[0005] In order to achieve this purpose, the utility model adopts the following technical scheme:

[0006] The bottom workbench of full electric wave radio frequency laboratory includes:

[0007] Full wave band shielding base station;

[0008] Full wave band test turntable, it is rotatably arranged at the center of full wave band shielding base station and is used for placing the test object, and the full wave band test turntable includes the rotation drive mechanism at the bottom of the full wave band test turntable, the shielding bottom plate structure on the rotation drive mechanism, the connecting support structure on the shielding bottom plate structure, the support structure on the connecting support structure and the wave absorbing layer between the shielding bottom plate structure and the support structure;

[0009] The rotating driving mechanism can drive the shielding bottom plate structure, the connecting support structure, the support structure and the wave-absorbing layer to rotate synchronously, the connecting support structure and the support structure support the object to be tested, the support structure is adjacent to the surface of the object to be tested and is used for bearing the object to be tested, and the connecting support structure is used for supporting the support structure and dispersing and transmitting the pressure of the object to be tested applied to the support structure to the shielding bottom plate structure.

[0010] Preferably, the support structure is made of glass fiber resin material or glass fiber nylon material.

[0011] Preferably, the wave-absorbing layer comprises first wedge parts arranged on the connecting support structure and spaced apart, and the first wedge parts gradually decrease in cross-sectional area along the direction close to the object to be tested.

[0012] Preferably, the wave-absorbing layer is made of rubber foam or polyurethane foam.

[0013] Preferably, the support structure comprises a first base part for bearing the object to be tested and second wedge parts arranged on the first base part and spaced apart, the first base part is a part of the support structure with constant cross-sectional area, the second wedge parts gradually decrease in cross-sectional area along the direction away from the object to be tested, and one second wedge part is arranged every 2-5 first wedge parts.

[0014] Preferably, the second wedge part comprises a connecting channel arranged at one end adjacent to the connecting support structure, the end of the connecting channel close to the first base part is arranged as a circular concave surface, the connecting support structure comprises a root part fixedly connected with the shielding bottom plate structure and a protruding part capable of protruding into the connecting channel and having a convex surface matched with the concave surface, and the protruding part and the connecting channel are adhesively connected by flexible glue.

[0015] Preferably, the inner wall of the connecting channel, the concave surface, the convex surface and the outer wall of the protruding part are all rough surfaces.

[0016] Preferably, the shielding bottom plate structure comprises, in sequence from the direction away from the object to be tested, a ferrite layer, a semi-soft base layer and a steel plate support layer, and the root part of the connecting support structure is fixedly connected with the steel plate support layer.

[0017] Preferably, the full-band shielding base station comprises a support part for the tested object to enter and a wave-absorbing part distributed outside the support part and the full-band test turntable, the support part comprises a first support frame arranged on the ground and a shielding bottom plate structure, a connecting support structure and a wave-absorbing layer arranged in sequence on the first support frame, and the wave-absorbing part comprises a second support frame and a shielding bottom plate structure and a wave-absorbing layer arranged in sequence on the second support frame.

[0018] According to another aspect of the utility model, the utility model also provides a full electric wave radio frequency laboratory, including bottom work table, first wave-absorbing side wall, second wave-absorbing side wall, third wave-absorbing side wall, fourth wave-absorbing side wall and wave-absorbing roof plate as described above, first wave-absorbing side wall, second wave-absorbing side wall, third wave-absorbing side wall and fourth wave-absorbing side wall are collectively enclosed into frame body, and the frame body is connected between bottom work table and wave-absorbing roof plate.

[0019] Beneficial effects:

[0020] According to the full electric wave radio frequency laboratory bottom work table provided by the utility model, the shielding bottom plate structure provides support basis for the connecting support mechanism and the support structure, and can effectively suppress the multipath interference from the ground. After the tested object is transferred from the full-band shielding base station to the full-band test turntable, the upper surface of the support structure adjacent to the tested object is arranged. At this time, the pressure applied by the tested object is transmitted to the shielding bottom plate structure through the support structure and the connecting support structure, and the pressure is evenly dispersed on the shielding bottom plate structure by the support structure and the connecting support structure, thereby reducing the risk of structural deformation or failure caused by stress concentration. Therefore, the bottom work table not only can effectively support the tested object, but also can significantly suppress the multipath interference from the ground. The rotating drive mechanism drives the shielding bottom plate structure, the connecting support structure, the support structure and the wave-absorbing layer to rotate synchronously to simulate the multidirectional interference of the tested object in the actual application scenario.

[0021] According to the full electric wave radio frequency laboratory provided by the utility model, through the improvement of the bottom work table, the laboratory as a whole can suppress electromagnetic waves in all directions, so that the laboratory can meet the requirements of multi-band comprehensive testing. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and these drawings without creative labor for those skilled in the art.

[0023] Figure 1 is a structural schematic view of a full-waveband test rotary table provided by an embodiment of the present utility model;

[0024] Figure 2 is a structural schematic view of a shielding bottom plate structure, a connecting support structure, a support structure and a wave absorbing layer provided by an embodiment of the present utility model;

[0025] Figure 3 is a structural schematic view of a shielding bottom plate structure, a connecting support structure, a support structure and a wave absorbing layer provided by an embodiment of the present utility model after being split;

[0026] Figure 4 is a top view of a bottom workbench of a full-wave radio frequency laboratory provided by an embodiment of the present utility model.

[0027] In the figure:

[0028] 1, full-waveband test rotary table;

[0029] 11, rotary drive mechanism; 12, shielding bottom plate structure; 121, ferrite layer; 122, semi-soft base layer; 123, steel plate support layer; 13, connecting support structure; 131, root part; 132, insertion part; 1321, convex surface; 14, support structure; 141, first base part; 142, second split part; 1421, connecting channel; 14211, concave surface; 15, wave absorbing layer; 151, first split part;

[0030] 2, full-waveband shielding base table;

[0031] 21, support part; 22, wave absorbing part;

[0032] 100, object to be tested. DETAILED DESCRIPTION

[0033] The present utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, and not to limit the present utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present utility model are shown in the drawings, not all the structures.

[0034] In the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0035] In the present utility model, unless otherwise expressly specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact of the first and second features, or indirect contact of the first and second features through another feature therebetween. Moreover, the first feature "on", "above" and "over" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "underneath" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0036] In the description of the present embodiment, the terms "up", "down", "left", "right" and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0037] It should be noted that in the present embodiment, the tested object 100 is an automobile. In other embodiments, it can also be a medical device, a military device or a consumer electronic product, etc.

[0038] Figure 1 The structure of the full-waveband test turntable 1 provided by the present embodiment is shown. As shown in the figure, Figure 1 The present embodiment provides a bottom workbench of a full-electric wave radio frequency laboratory. The bottom workbench includes a full-waveband shielding base 2 and a full-waveband test turntable 1. The full-waveband test turntable 1 is rotatably arranged at the center of the full-waveband shielding base 2 and is used for placing a tested object 100. The full-waveband test turntable 1 includes a rotating driving mechanism 11 at the bottom of the full-waveband test turntable 1, a shielding bottom plate structure 12 on the rotating driving mechanism 11, a connecting support structure 13 on the shielding bottom plate structure 12, a support structure 14 on the connecting support structure 13, and a wave-absorbing layer 15 between the shielding bottom plate structure 12 and the support structure 14. The rotating driving mechanism 11 can drive the shielding bottom plate structure 12, the connecting support structure 13, the support structure 14 and the wave-absorbing layer 15 to rotate synchronously. The connecting support structure 13 and the support structure 14 jointly support the tested object 100. The support structure 14 is adjacent to the surface of the tested object 100 and is used for bearing the tested object 100. The connecting support structure 13 is used for supporting the support structure 14 and dispersing and transmitting the pressure of the tested object 100 applied to the support structure 14 to the shielding bottom plate structure 12.

[0039] The bottom workbench provided by the embodiment shields the bottom plate structure 12, which on one hand provides a support base for the connecting support structure 13 and the support structure 14, and on the other hand effectively suppresses multipath interference from the ground. After the tested object 100 is transferred from the full-band shielding base 2 to the full-band test turntable 1, the upper surface of the tested object 100 adjacent to the support structure 14 is set. At this time, the pressure applied by the tested object 100 is transmitted to the shielding bottom plate structure 12 through the support structure 14 and the connecting support structure 13, and the pressure is uniformly dispersed on the shielding bottom plate structure 12 by the support structure 14 and the connecting support structure 13, thereby reducing the risk of structural deformation or failure caused by stress concentration. Therefore, the bottom workbench not only can effectively support the tested object 100, but also can significantly suppress the multipath interference from the ground. The rotating drive mechanism 11 drives the shielding bottom plate structure 12, the connecting support structure 13, the support structure 14 and the wave-absorbing layer 15 to rotate synchronously to simulate the multi-directional interference of the tested object 100 in the actual application scenario.

[0040] In the embodiment, the rotating drive mechanism 11 can drive the shielding bottom plate structure 12, the connecting support structure 13, the support structure 14 and the wave-absorbing layer 15 to rotate synchronously by driving the rotating disc to rotate by the motor. The embodiment does not make specific limitations on this. Any rotating drive mechanism 11 that can achieve the above effects is within the protection scope of the disclosed embodiment. Since the specific structure of the rotating drive mechanism 11 is known to those skilled in the art as prior art, in order to save space, it will not be described in detail here.

[0041] Specifically, the support structure 14 is made of glass fiber resin material or glass fiber nylon material. The glass fiber resin material or glass fiber nylon material has the characteristics of extremely low electromagnetic wave reflectivity, tensile strength, compression strength and impact strength, which replaces the original steel structure, so as to ensure that the support structure 14 has good support strength while effectively reducing the reflection of electromagnetic waves by the support structure 14.

[0042] Figure 2 The structure schematic diagram of the shielding bottom plate structure 12, the connecting support structure 13, the support structure 14 and the wave-absorbing layer 15 provided by the embodiment is shown. As shown in Figure 2 and shown in Figure 1 The wave-absorbing layer 15 includes a first split part 151 arranged on the connecting support structure 13 and spaced apart, and the first split part 151 gradually decreases in cross-sectional area along the direction close to the tested object 100 by the shielding bottom plate structure 12. The special shape of the first split part 151 can make the electromagnetic waves incident on the wave-absorbing layer 15 be almost completely absorbed without reflection, thereby weakening the multipath interference from the ground.

[0043] Specifically, the wave-absorbing layer 15 is made of rubber foam or polyurethane foam, which has high flow resistance and interflowing pore structure, so that the electromagnetic wave can be energy-dissipated after entering, thereby achieving the purpose of wave absorption.

[0044] Further, the support structure 14 includes a first base 141 for bearing the tested object 100 and a second wedge 142 arranged on the first base 141 and spaced apart, the first base 141 being a part of the support structure 14 with constant cross-sectional area, the second wedge 142 gradually decreasing in cross-sectional area in the direction away from the tested object 100, and one second wedge 142 being arranged every 2-5 first wedges 151. On the one hand, the use of the second wedge 142 can significantly reduce the reflection of electromagnetic waves incident in the support structure 14, thereby effectively reducing or suppressing multipath interference from the ground. On the other hand, the arrangement of one second wedge 142 every 2-5 first wedges 151 can also ensure that the support structure 14 has sufficient support strength and structural stability.

[0045] Specifically, as shown in Figure 2 , the first base 141 is a plate-shaped structure located above the connection support structure 13 and the wave-absorbing layer 15 and directly contacting the bottom of the tested object 100, the first base 141 extending in the horizontal direction, and the second wedge 142 is a sharp structure extending in the vertical direction, and the wave-absorbing layer 15 is located between the first base 141 and the shielding bottom plate structure 12.

[0046] Figure 3 The structural schematic diagram of the split shielding bottom plate structure 12, the connection support structure 13, the support structure 14 and the wave-absorbing layer 15 provided by the embodiment is shown. As shown in Figure 3 and in combination with Figure 1 and Figure 2 , the second wedge 142 includes a connection channel 1421 arranged at one end adjacent to the connection support structure 13, the end of the connection channel 1421 close to the second base is arranged as a circular concave surface 14211, the connection support structure 13 includes a root 131 fixedly connected with the shielding bottom plate structure 12 and an extending part 132 capable of extending into the connection channel 1421 and having a convex surface 1321 matched with the concave surface 14211, and the extending part 132 is adhesively connected with the connection channel 1421 by flexible glue. The arrangement of the concave surface 14211 and the convex surface 1321 can suppress the specular reflection of electromagnetic waves, so that the connection position of the connection support structure 13 and the support structure 14 can also play a role in reflecting electromagnetic waves, thereby further reducing the multipath interference from the ground in cooperation with the support structure 14. The flexible adhesive connection mode can adapt to the concave surface 14211 and the convex surface 1321, thereby ensuring the stability between the connection support structure 13 and the support structure 14.

[0047] Further, the inner wall of the connecting channel 1421, the concave surface 14211, the convex surface 1321 and the outer wall of the extending part 132 are all rough surfaces. The rough surfaces can further inhibit the specular reflection of electromagnetic waves and can enhance the strength and stability of the flexible glue adhesion.

[0048] Further, the shielding bottom plate structure 12 comprises, in sequence from the direction away from the tested object 100, a ferrite layer 121, a semi-soft base layer 122 and a steel plate support layer 123, so that the shielding bottom plate structure 12 can inhibit the entry of electromagnetic waves. The root 131 of the connecting support structure 13 is fixedly connected with the steel plate support layer 123, so that the steel plate support layer 123 and the semi-soft base layer 122 can bear the pressure received by the connecting support structure 13 and the support structure 14, thereby ensuring the structural stability of the whole full-waveband test turntable 1. Specifically, in the embodiment, the semi-soft base layer 122 is a silica gel plate.

[0049] Figure 4 A top view of the bottom workbench of the full-electromagnetic-wave radio frequency laboratory provided by the embodiment is shown. As shown in Figure 4 and in combination with Figures 1-3 shown, the full-waveband shielding base 2 comprises a support part 21 for the tested object 100 to enter and a wave-absorbing part 22 distributed outside the support part 21 and the full-waveband test turntable 1. The support part 21 comprises a first support frame body arranged on the ground and, in sequence, a shielding bottom plate structure 12, a connecting support structure 13 and a wave-absorbing layer 15 arranged on the first support frame body. The wave-absorbing part 22 comprises a second support frame body and, in sequence, a shielding bottom plate structure 12 and a wave-absorbing layer 15 arranged on the second support frame body. The shielding bottom plate structure 12, the connecting support structure 13 and the wave-absorbing layer 15 of the support part 21 are the same structures as the shielding bottom plate structure 12, the connecting support structure 13, the support structure 14 and the wave-absorbing layer 15 in the full-waveband test turntable 1. The wave-absorbing layer 15 of the wave-absorbing part 22 is the same structure as the wave-absorbing layer 15 in the full-waveband test turntable 1. The support part 21 can provide necessary support for the driving path of the tested object 100 when the tested object 100 enters the full-waveband test turntable 1 and inhibit the multipath interference from the ground. The wave-absorbing part 22 does not need to support the tested object 100, so only the wave-absorbing layer 15 is arranged to inhibit the multipath interference from the ground.

[0050] The embodiment further provides a full-electromagnetic-wave radio frequency laboratory, which comprises the bottom workbench, the first wave-absorbing side wall, the second wave-absorbing side wall, the third wave-absorbing side wall, the fourth wave-absorbing side wall and the wave-absorbing top plate as described above. The first wave-absorbing side wall, the second wave-absorbing side wall, the third wave-absorbing side wall and the fourth wave-absorbing side wall jointly enclose a frame, and the frame is connected between the bottom workbench and the wave-absorbing top plate.

[0051] The full-wave radio frequency laboratory provided by the embodiment can inhibit electromagnetic waves in each direction through improvement of the bottom workbench, so that the laboratory can meet the requirements of multi-band comprehensive test.

[0052] It should be noted that the specific structure of the radio frequency laboratory is known to those skilled in the art as prior art, and therefore, for the sake of brevity, it will not be described in detail here.

[0053] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A floor stand for a full wave radio frequency laboratory, characterized in that, The application relates to a full-waveband shielding base station and a full-waveband test rotary table. The full-waveband shielding base station comprises a full-waveband shielding base station, a full-waveband test rotary table rotatably arranged at the center of the full-waveband shielding base station and used for placing a tested object, a rotary driving mechanism arranged at the bottom of the full-waveband test rotary table, a shielding bottom plate structure arranged on the rotary driving mechanism, a connecting support structure arranged on the shielding bottom plate structure, a support structure arranged on the connecting support structure and a wave-absorbing layer arranged between the shielding bottom plate structure and the support structure. The rotary driving mechanism can drive the shielding bottom plate structure, the connecting support structure, the support structure and the wave-absorbing layer to rotate synchronously, the connecting support structure and the support structure jointly support the tested object, the support structure is adjacent to the surface of the tested object and is used for bearing the tested object, and the connecting support structure is used for supporting the support structure and dispersing and transmitting the pressure of the tested object applied to the support structure to the shielding bottom plate structure. The support structure is made of glass fiber resin material or glass fiber nylon material. The wave-absorbing layer comprises first split parts arranged on the connecting support structure and spaced apart, and the first split parts gradually decrease in cross-sectional area along the direction close to the tested object.

2. The floor stand for an all-electric wave radio frequency laboratory according to claim 1, characterized in that, The wave-absorbing layer is made of rubber foam or polyurethane foam.

3. The floor stand for an all-electric wave radio frequency laboratory according to claim 1, characterized in that, The support structure comprises a first base part used for bearing the tested object and second split parts arranged on the first base part and spaced apart, the first base part is a part of the support structure with constant cross-sectional area, the second split parts gradually decrease in cross-sectional area along the direction away from the tested object, and one second split part is arranged every 2-5 first split parts.

4. The floor stand for an all-electric wave radio frequency laboratory according to claim 3, characterized in that, The second split part comprises a connecting channel arranged at one end adjacent to the connecting support structure, the end close to the first base part of the connecting channel is arranged as a circular concave surface, the connecting support structure comprises a root part fixedly connected with the shielding bottom plate structure and a protruding part capable of extending into the connecting channel and having a convex surface matched with the concave surface, and the protruding part is adhesively connected with the connecting channel through flexible glue.

5. The floor stand for an all-electric wave radio frequency laboratory according to claim 3, characterized in that, The inner wall of the connecting channel, the concave surface, the convex surface and the outer wall of the protruding part are all rough surfaces.

6. The floor stand for an all-electric wave radio frequency laboratory according to claim 5, characterized in that, The shielding bottom plate structure comprises a ferrite layer, a semi-soft base layer and a steel plate support layer in sequence along the direction away from the tested object, and the root part of the connecting support structure is fixedly connected with the steel plate support layer.

7. The floor stand for an all-electric wave radio frequency laboratory according to claim 6, characterized in that, The full-waveband shielding base station comprises a support part for the tested object to enter and a wave-absorbing part distributed outside the support part and the full-waveband test rotary table, the support part comprises a first support frame arranged on the ground and the shielding bottom plate structure, the connecting support structure and the wave-absorbing layer arranged in sequence on the first support frame, and the wave-absorbing part comprises a second support frame and the shielding bottom plate structure and the wave-absorbing layer arranged in sequence on the second support frame.

8. The floor stand for an all-electric wave radio frequency laboratory according to claim 6, characterized in that, ​ 9. The floor stand for an all-electric wave radio frequency laboratory according to any of claims 1 - 8, characterized in that, ​ 10. An all-electric wave radio frequency laboratory characterized by, The bottom workbench, the first wave-absorbing side wall, the second wave-absorbing side wall, the third wave-absorbing side wall, the fourth wave-absorbing side wall and the wave-absorbing top plate are connected between the bottom workbench and the wave-absorbing top plate.

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