Compact range whole vehicle test system and test method

Abstract

The invention provides a compact range whole vehicle test system and test method, and relates to the field of vehicle test, the test system comprises a darkroom with a test dead zone formed inside, the ground of the darkroom is provided with a first track and a second track which intersect with a track switching mechanism, the first track is provided with a first station, and the second track is provided with a second station; the track switching mechanism is provided with a transfer track and can drive the transfer track to rotate; the rotary table device is arranged in the darkroom and comprises a base and a three-axis adjusting mechanism arranged on the base, the base can slide along the first track and the second track, the three-axis adjusting mechanism is connected with the whole vehicle bracket, and three axes of the three-axis adjusting mechanism intersect at a point above the whole vehicle bracket; when the rotary table device is arranged at the first station, the three-axis adjusting mechanism suspends the whole vehicle bracket in the test silence area, and when the rotary table device is arranged at the second station, the three-axis adjusting mechanism moves the whole vehicle bracket out of the silence area. The test system provided by the invention can avoid the influence of microwave reflection on the experiment result when the test is carried out in the quiet zone.

Description

Technical Field

[0001] The present invention generally relates to the technical field of vehicle testing, and in particular to a compact field vehicle testing system and a testing method. Background Art

[0002] In the field of antenna testing and Radar Cross Section (RCS) testing, especially for automobiles, it may be necessary to use a compact range for testing. Since the testing in a compact range is not limited to antenna testing, but may also involve lighting testing, EMC testing, etc., combining multiple functional test equipment to form a multi-functional compact range test system has become one of the best options to reduce the one-time investment in the test system.

[0003] In the existing compact field test system, a turntable device is required to fix the vehicle to be tested and drive the vehicle to rotate at different angles in the test quiet zone. When the traditional turntable device supports the vehicle to be tested or drives the vehicle to be tested to rotate, the microwave scattering on the surface of the turntable device itself will affect the experimental results. Summary of the invention

[0004] In view of the above defects or deficiencies in the prior art, it is desirable to provide a compact field vehicle testing system and a testing method to solve the above problems.

[0005] A first aspect of the present invention provides a compact field vehicle testing system, comprising: A darkroom, wherein a test quiet zone is formed in the darkroom, a first track and a second track are provided on the floor of the darkroom, which are perpendicular to each other and intersect with a track switching mechanism, a first workstation is provided on the first track, and a second workstation is provided on the second track; a transfer track is provided on the track switching mechanism, and the track switching mechanism can drive the transfer track to rotate around a first axis perpendicular to the floor of the darkroom, so that the transfer track is connected to the first track or the second track; A turntable device, the turntable device is arranged in the dark room, the turntable device comprises a base and a three-axis adjustment mechanism arranged on the base, the base is slidable along the first track and the second track, the three-axis adjustment mechanism is connected to the whole vehicle bracket, and the three axes of the three-axis adjustment mechanism intersect at a point above the whole vehicle bracket; When the turntable device is placed at the first station, the three-axis adjustment mechanism suspends the whole vehicle bracket in the test quiet zone, and when the turntable device is placed at the second station, the three-axis adjustment mechanism moves the whole vehicle bracket outside the test quiet zone.

[0006] According to the technical solution provided by the present invention, the three-axis adjustment mechanism includes: A horizontal support frame, wherein a first driving mechanism is provided at the bottom of the horizontal support frame, and the horizontal support frame is driven by the first driving mechanism to rotate relative to the base around a second axis, and the second axis is perpendicular to the floor of the darkroom; A pitch turntable, the pitch turntable is connected to the horizontal support frame through a pitch support frame and a second driving mechanism, the pitch support frame is installed at one end of the horizontal support frame, the second driving mechanism is installed on the top of the pitch support frame and suspends the pitch turntable above the horizontal support frame; the pitch turntable is driven by the second driving mechanism to rotate relative to the horizontal support frame around a third axis, and the third axis is perpendicular to the second axis; A third driving mechanism, the third driving mechanism is installed on the top of the pitch turntable and connected to the whole vehicle bracket, the third driving mechanism is used to drive the whole vehicle bracket to rotate around a fourth axis, and the fourth axis is perpendicular to the top surface of the pitch turntable; Wherein, the second axis, the third axis and the fourth axis intersect at a point above the vehicle bracket.

[0007] According to the technical solution provided by the present invention, when the turntable device is placed at the first workstation, the horizontal support frame is placed outside the test quiet area.

[0008] According to the technical solution provided by the present invention, the first driving mechanism is connected to the base through a bottom support frame, the bottom end of the bottom support frame is connected to the base, and a fine-tuning shim is provided at the top of the bottom support frame, the fine-tuning shim connects the bottom support frame and the first driving mechanism, and the fine-tuning shim is used to adjust the height of the bottom support frame.

[0009] According to the technical solution provided by the present invention, the first driving mechanism includes: a first transmission bearing, wherein the outer ring of the first transmission bearing is fixed to the fine-tuning washer, the inner ring of the first transmission bearing is fixed to the bottom of the horizontal support frame, and the inner wall of the inner ring of the first transmission bearing is provided with a first transmission tooth; A first driving device, wherein an output end of the first driving device is drivingly connected to the first transmission tooth, and is used to drive the inner ring of the first transmission bearing 21 to rotate around the second axis; The third driving mechanism comprises: A second transmission bearing, wherein the outer ring of the second transmission bearing is fixed to the top surface of the pitch turntable, the inner ring of the second transmission bearing is fixed to the bottom of the vehicle bracket, and the inner wall of the inner ring of the second transmission bearing is provided with a third transmission tooth; A third driving device, the output end of which is drivingly connected to the third transmission tooth, is used to drive the inner ring of the second transmission bearing to rotate around the fourth axis.

[0010] According to the technical solution provided by the present invention, arc-shaped guide rails and a plurality of second transmission teeth arranged along the extending direction of the arc-shaped guide rails are provided on both sides of the pitch turntable, and the center of the arc-shaped guide rails is located on the third axis; The second driving mechanism is provided with a pair and is distributed on both sides of the pitch support frame, and the second driving mechanism includes: A driving housing, wherein the driving housing is fixed to the top of the side wall of the pitch support frame; A plurality of track sliders, wherein the plurality of track sliders are arranged on a side of the drive housing close to another drive housing and are arranged in an arc shape, and an arc-shaped groove for clamping the arc-shaped guide rail is provided on the track slider, and a sliding ball is provided in the arc-shaped groove; A second driving device is drivingly connected to the second transmission gear.

[0011] According to the technical solution provided by the present invention, a first cable drag chain is provided on the bottom surface of the pitch turntable, a second cable drag chain is provided on the side of the pitch support frame close to the second axis, and a third cable drag chain is provided inside the horizontal support frame. The control cable of the turntable device extends from the pitch turntable to the inside of the bottom support frame via the first cable drag chain, the second cable drag chain and the third cable drag chain.

[0012] According to the technical solution provided by the present invention, at least the base, the horizontal support frame, the pitch support frame, the pitch turntable and the whole vehicle bracket are wrapped with absorbing materials.

[0013] According to the technical solution provided by the present invention, a counterweight is installed on the end of the horizontal support frame opposite to the end where the pitch support frame is installed.

[0014] A second aspect of the present invention provides a method for testing a whole vehicle in a compact field, based on the above-mentioned whole vehicle testing system in a compact field, comprising: The vehicle to be tested is mounted on the whole vehicle bracket and fixed; The base is moved to move the turntable device to the first station, and when the vehicle to be tested is placed in the test quiet zone, the quiet zone test begins; The angle of the vehicle to be tested in the test quiet zone is adjusted by the three-axis adjustment mechanism until all positions of the vehicle to be tested are tested in the quiet zone, and the quiet zone test is terminated; Connecting the transfer track and the first track through the track switching mechanism, moving the turntable device to the transfer track, and then connecting the transfer track and the second track through the track switching mechanism, moving the turntable device to the second station; Other tests are performed on the vehicle to be tested at the second workstation, and the other tests at least include a lighting test or an EMC test.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting a turntable device, a first track and a second track, the base of the turntable device slides on the first track and the second track, and the turntable device can be moved to the first station and the second station respectively, so that multiple functions of the vehicle to be tested can be tested in the same darkroom; by intersecting the intersection of the three rotation axes of the three-axis adjustment mechanism of the turntable device at a point above the whole vehicle bracket, and the vehicle to be tested is fixed on the whole vehicle bracket, so that when the three-axis adjustment mechanism adjusts the angle of the vehicle to be tested, the center of rotation is always placed at a point on the vehicle to be tested, and then only the angle of the vehicle to be tested in the test quiet zone is changed during the rotation, and the rotation center The position of the point does not change within the test quiet zone, preventing the vehicle to be tested from deviating outside the test quiet zone and affecting the test results; the vehicle to be tested is suspended in the darkroom by a three-axis adjustment mechanism, so that when conducting a quiet zone test, there is no need to support the bottom of the vehicle to be tested, and compared with the traditional turntable device, the test results are avoided from being affected by microwave scattering on the surface of the turntable device; by vertically arranging the first track and the second track, the length direction dimension of the darkroom is too large, which prevents the layout space of the darkroom from being limited; by arranging a track switching mechanism, the track switching structure drives the transfer track to rotate, making it convenient to switch the position of the turntable device between the first track and the second track. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 A schematic diagram of a vehicle testing system for a compact field provided in Embodiment 1 of the present invention; Figure 2 It is a structural schematic diagram of a turntable device; Figure 3 for Figure 2 A schematic structural diagram of the turntable device from another perspective; Figure 4 It is a schematic diagram of the structure including the absorbing material on the turntable device; Figure 5 is a structural schematic diagram of a first driving mechanism; Figure 6 for Figure 5 A bottom view schematically showing a first driving mechanism; Figure 7 is a schematic diagram of the structure of the pitch support frame; Figure 8 is a structural schematic diagram of a second driving mechanism; Fig. 9It is a structural schematic diagram of the pitch turntable; Fig.10 for Fig. 9 A schematic diagram of the structure of the pitch turntable from another perspective is shown; Fig.11 This is a flow chart of the method for testing a whole vehicle in a compact field provided in Example 2 of the present invention.

[0017] Figure numbers: 1. darkroom; 2. test quiet zone; 3. first track; 4. second track; 5. first station; 6. second station; 7. switching mechanism; 8. transfer track; 9. turntable device; 10. base; 11. three-axis adjustment mechanism; 12. vehicle bracket; 13. horizontal support frame; 14. first drive mechanism; 15. pitch turntable; 16. pitch support frame; 17. second drive mechanism; 18. third drive mechanism; 19. bottom support frame; 20. fine-tuning shim; 21. first transmission bearing; 22. base flange; 23. first transmission gear; 24. first drive Device; 25, second transmission bearing; 26, third transmission tooth; 27, third driving device; 28, arc guide rail; 29, second transmission tooth; 30, driving housing; 31, track slider; 32, arc slot; 33, second driving device; 34, first cable drag chain; 35, second cable drag chain; 36, third cable drag chain; 37, absorbing material; 38, counterweight; 39, first limiting gear; 40, first feedback device; 41, first mounting seat; 42, second limiting gear; 43, second feedback device; 44, second mounting seat; 45, third feedback device. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the invention. It should also be noted that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] Example 1 Please refer to Figure 1-Figure 10The present embodiment provides a vehicle testing system for a compact field, comprising: a darkroom 1, wherein a test quiet zone 2 is formed in the darkroom 1, wherein a first track 3 and a second track 4 are provided on the floor of the darkroom 1, which are perpendicular to each other and intersect at a track switching mechanism 7, wherein a first workstation 5 is provided on the first track 3, and a second workstation 6 is provided on the second track 4; wherein a transfer track 8 is provided on the track switching mechanism 7, and wherein the track switching mechanism 7 can drive the transfer track 8 to rotate around a first axis perpendicular to the floor of the darkroom 1, so that the transfer track 8 is connected to the first track 3 or to the second track 4; A turntable device 9, the turntable device 9 is arranged in the darkroom 1, the turntable device 9 comprises a base 10 and a three-axis adjustment mechanism 11 arranged on the base 10, the base 10 is slidable along the first track 3 and the second track 4, the three-axis adjustment mechanism 11 is connected to a whole vehicle bracket 12, and the three axes of the three-axis adjustment mechanism 11 intersect at a point above the whole vehicle bracket 12; When the turntable device 9 is placed at the first workstation 5 , the three-axis adjustment mechanism 11 suspends the whole vehicle bracket 12 in the test quiet zone 2 , and when the turntable device 9 is placed at the second workstation 6 , the three-axis adjustment mechanism 11 moves the whole vehicle bracket 12 outside the test quiet zone 2 .

[0021] Specifically, the compact field vehicle test system provided in this embodiment includes a darkroom 1, and the entire system is placed inside the darkroom 1 to isolate external microwave interference; a turntable device 9, a first track 3, and a second track 4 are arranged in the darkroom 1. The turntable device 9 includes a base 10 and a three-axis adjustment mechanism 11 arranged on the base 10; a vehicle bracket 12 is connected to the three-axis adjustment mechanism 11, and the three-axis adjustment mechanism 11 has three rotation axes. The angle of the vehicle bracket 12 is adjusted by rotating around the three rotation axes, and the vehicle bracket 12 is used to fix the vehicle to be tested. The first track 3 and the second track 4 are arranged on the ground in the darkroom 1, and the first track 3 and the second track 4 are used to move the turntable device 9. The base 10 of the turntable device 9 is provided with rollers, and the turntable device 9 is moved by rolling the rollers on the first track 3 and the second track 4; a first workstation 5 is provided on the first track 3, and a second workstation 6 is provided on the second track 4. A test quiet area 2 is formed in the darkroom 1 at a position corresponding to the first workstation 5, and a test equipment for other tests is arranged in the darkroom 1 at a position corresponding to the second workstation 6. The test equipment can be selected as equipment for lighting testing or equipment for EMC testing, etc.

[0022] In this embodiment, the first track 3 and the second track 4 are arranged perpendicular to each other, and intersect at one end of the first track 3 and the second track 4. A track switching mechanism 7 is arranged at the intersection position, and the track switching mechanism 7 is used to switch the turntable device 9 between the first track 3 and the second track 4, thereby facilitating the turntable device 9 to move to the first station 5 so that the vehicle to be tested can be subjected to a quiet zone test, or to move the turntable device 9 to the second station 6 so that the vehicle to be tested can be subjected to other tests. The first station 5 is placed at one end of the first track 3 away from the track switching mechanism 7, and the second station 6 is placed at one end of the second track 4 away from the track switching mechanism 7. The relative positions of the first station 5 and the second station 6 are arranged in this way so that different test positions are separated by a certain distance to avoid mutual interference between the equipment at the two test positions. The purpose of vertically arranging the first track 3 and the second track 4 is to reduce the length dimension of the darkroom 1, thereby reducing the site dimension requirement of the site where the darkroom 1 is placed.

[0023] The track switching mechanism 7 is specifically a disc structure, and the track switching mechanism 7 is rotatably installed on the ground inside the darkroom 1, and the rotation direction is around a first axis perpendicular to the ground of the darkroom 1; the transfer track 8 is provided on the top surface of the track switching mechanism 7, and the transfer track 8 can be docked with the first track 3 or with the second track 4 by rotating the track switching mechanism 7, and the transfer track 8 plays a transfer role between the first track 3 and the second track 4.

[0024] Specifically, the axes of the three rotating axes of the turntable device 9 in this embodiment intersect at a point above the whole vehicle bracket 12. When the vehicle to be tested is fixed on the whole vehicle bracket 12, no matter which rotating axis is rotated, the rotation center of the vehicle to be tested is always located at a point on the vehicle to be tested, thereby only changing the angle of the vehicle to be tested in the test quiet zone 2, and the position of the rotation center does not change, thereby ensuring that the vehicle to be tested can always be in the test quiet zone 2, and will not cause the position of the vehicle to be tested to shift, thereby avoiding the vehicle to be tested from shifting to the outside of the test quiet zone 2 during the test and affecting the test results. The turntable device 9 provided in this embodiment suspends the whole vehicle bracket 12 in the darkroom 1, and then when the turntable device 9 moves to the first station 5, the turntable device 9 suspends the vehicle to be tested in the test quiet zone 2, thereby avoiding the surface of the traditional turntable device 9 supported at the bottom of the vehicle to be tested from generating microwave scattering in the test quiet zone 2, thereby causing test errors that affect the test results.

[0025] Furthermore, the three-axis adjustment mechanism 11 comprises: A horizontal support frame 13, wherein a first driving mechanism 14 is provided at the bottom of the horizontal support frame 13, and the horizontal support frame 13 is driven by the first driving mechanism 14 to rotate relative to the base 10 around a second axis, and the second axis is perpendicular to the floor of the darkroom 1; A pitch turntable 15, wherein the pitch turntable 15 is connected to the horizontal support frame 13 via a pitch support frame 16 and a second drive mechanism 17, wherein the pitch support frame 16 is mounted on one end of the horizontal support frame 13, and the second drive mechanism 17 is mounted on the top of the pitch support frame 16 and suspends the pitch turntable 15 above the horizontal support frame 13; the pitch turntable 15 is driven by the second drive mechanism 17 to rotate relative to the horizontal support frame 13 around a third axis, wherein the third axis is perpendicular to the second axis; A third driving mechanism 18, the third driving mechanism 18 is installed on the top of the pitch turntable 15 and connected to the vehicle bracket 12, the third driving mechanism 18 is used to drive the vehicle bracket 12 to rotate around a fourth axis, and the fourth axis is perpendicular to the top surface of the pitch turntable 15; The second axis, the third axis and the fourth axis intersect at a point above the vehicle bracket 12 .

[0026] Specifically, Figure 2 and Figure 3 As shown, the three-axis adjustment mechanism 11 provided in this embodiment includes, from bottom to top, a first drive mechanism 14, a horizontal support frame 13, a pitch support frame 16, a second drive mechanism 17, a pitch turntable 15, a third drive mechanism 18 and the vehicle bracket 12.

[0027] The horizontal support frame 13 is hollow inside and is provided with a skeleton. The hollow horizontal support frame 13 maintains structural strength under the support of the skeleton while reducing weight, thereby reducing the load of the first driving mechanism 14. The top surface of the horizontal support frame 13 is rectangular and parallel to the floor of the darkroom 1. The first driving mechanism 14 is arranged at the center of the bottom of the horizontal support frame 13, and is used to support the horizontal support frame 13 and drive the horizontal support frame 13 to rotate around the second axis. The direction of the second axis is referenced to Figure 4 The dotted line A in the figure; the horizontal support frame 13 and the first driving mechanism 14 serve as the first rotating part of the three-axis adjustment mechanism 11.

[0028] The pitch support frame 16 is arranged at one end of the top surface of the horizontal support frame 13, and the pitch support frame 16 extends in a direction perpendicular to the top surface of the horizontal support frame 13. The interior of the pitch support frame 16 is hollow and provided with a skeleton, and the top surface of the pitch support frame 16 is set as an arc surface; the second driving mechanism 17 is arranged on the top side wall of the pitch support frame 16, and the second driving mechanism 17 connects the pitch turntable 15 with the pitch support frame 16. The second driving mechanism 17 is used to support the pitch turntable 15 and drive the pitch turntable 15 to rotate around a third axis, and the direction of the third axis is referenced Figure 4 The dotted line B in the figure; the pitch turntable 15 is hollow inside and is provided with a skeleton, the top surface of the pitch turntable 15 is a plane, the ground of the pitch turntable 15 is set to an arc surface adapted to the top surface of the pitch support frame 16, and the cross-section of the pitch turntable 15 is semicircular; the pitch support frame 16 plays a supporting role on one side of the pitch turntable 15, and the pitch turntable 15 is suspended above the top center of the horizontal support frame 13 through the supporting role of the second driving mechanism 17, and the pitch turntable 15 is suspended between the horizontal support frame 13, the purpose of which is to increase The distance between the pitch turntable 15 and the horizontal support frame 13 is increased, thereby increasing the distance between the vehicle to be tested and the horizontal support frame 13, reducing the influence of microwave scattering on the surface of the horizontal support frame 13 on the test results; during testing, the pitch support frame 16 can be placed on the side of the pitch turntable 15 away from the feed source, further reducing the influence of microwave scattering on the surface of the pitch support frame 16 on the test results; the pitch support frame 16, the second driving mechanism 17 and the pitch turntable 15 serve as the second rotating part of the three-axis adjustment mechanism 11.

[0029] The third driving mechanism 18 is embedded on the top surface of the pitch turntable 15, and the third driving mechanism 18 connects the vehicle bracket 12 and the pitch turntable 15. The third driving mechanism 18 drives the vehicle bracket 12 to rotate around a fourth axis. The direction of the fourth axis is referenced to Figure 4 The third driving mechanism 18 and the vehicle bracket 12 serve as the third rotating part of the three-axis adjustment mechanism 11. The second axis, the third axis and the fourth axis intersect at a point on the vehicle bracket 12, reference Figure 4 Point O in .

[0030] Further, when the turntable device 9 is placed at the first workstation 5 , the horizontal support frame 13 is placed outside the test quiet area 2 .

[0031] Specifically, since the pitch turntable 15 and the horizontal support frame 13 are suspended in the air, when the turntable device 9 is placed in the first workstation 5, by adjusting the height of the three-axis adjustment mechanism 11, only the pitch turntable 15 can be placed in the test quiet zone 2. At this time, the horizontal support frame 13 and the structure thereunder are placed outside the test quiet zone 2, which directly avoids the horizontal support frame 13 from generating microwave scattering in the test quiet zone 2, thereby improving the accuracy of the test results.

[0032] Furthermore, the first driving mechanism 14 is connected to the base 10 through a bottom support frame 19, the bottom end of the bottom support frame 19 is connected to the base 10, and a fine-tuning shim 20 is provided at the top of the bottom support frame 19, the fine-tuning shim 20 connects the bottom support frame 19 and the first driving mechanism 14, and the fine-tuning shim 20 is used to adjust the height of the bottom support frame 19.

[0033] Specifically, Figure 2 and Figure 3 As shown, the bottom support frame 19 is a cylindrical structure, the bottom end of the bottom support frame 19 is connected to the top surface of the base 10, and a plurality of fine-tuning shims 20 are arranged circumferentially at the top of the bottom support frame 19, and the fine-tuning shims 20 fix the first driving mechanism 14. The height of the fine-tuning shims 20 can be adjusted, and by setting the fine-tuning shims 20, the height of the bottom support frame 19 can be adjusted, and then the height of the three-axis adjustment mechanism 11 can be adjusted, so that the bottom edge of the test quiet zone 2 is placed between the pitch turntable 15 and the horizontal support frame 13.

[0034] Furthermore, the first driving mechanism 14 includes: A first transmission bearing 21, wherein the outer ring of the first transmission bearing 21 is fixed to the fine-tuning washer 20, the inner ring of the first transmission bearing 21 is fixed to the bottom of the horizontal support frame 13, and the inner wall of the inner ring of the first transmission bearing 21 is provided with a first transmission tooth 23; A first driving device 24, wherein an output end of the first driving device 24 is drivingly connected to the first transmission tooth 23, and is used to drive the inner ring of the first transmission bearing 21 to rotate around the second axis; The third driving mechanism 18 comprises: A second transmission bearing 25, wherein the outer ring of the second transmission bearing 25 is fixed to the top surface of the pitch turntable 15, the inner ring of the second transmission bearing 25 is fixed to the bottom of the vehicle bracket 12, and the inner wall of the inner ring of the second transmission bearing 25 is provided with a third transmission tooth 26; The third driving device 27 , the output end of which is drivingly connected to the third transmission tooth 26 , is used to drive the inner ring of the second transmission bearing 25 to rotate around the fourth axis.

[0035] Specifically, refer to Figure 5 and Figure 6 The main body of the first driving mechanism 14 includes a first transmission bearing 21, which includes an inner ring and an outer ring that can rotate relatively, the axis of the first transmission bearing 21 is the second axis, the outer ring of the first transmission bearing 21 is fixed to the fine-tuning shim 20 through a base flange 22, and the inner ring of the first transmission bearing 21 is fixed to the ground of the horizontal support frame 13. The inner wall of the inner ring of the first transmission bearing 21 is provided with a first transmission tooth 23, and the inner side of the first transmission bearing 21 is also provided with a first driving device 24. Optionally, the first driving device 24 is a driving motor, and the output end of the first driving device 24 is meshed with the first transmission tooth 23 through a transmission gear for transmission. In addition, a first limiting gear 39 and a first feedback device 40 are also provided on the inner side of the inner ring of the first transmission bearing 21. The first limiting gear 39 and the first feedback device 40 are installed on a first mounting seat 41, and the first mounting seat 41 is fixed on the outer ring of the first transmission bearing 21; the first limiting gear 39 is meshed with the first transmission tooth 23 to limit the position of the outer ring of the first transmission bearing 21; the first feedback device 40 is meshed with the first transmission tooth 23 to determine the rotation angle of the inner ring of the first transmission bearing 21 according to the number of teeth of the first transmission tooth 23.

[0036] Specifically, refer to Fig. 9 The main body of the third driving mechanism 18 includes a second transmission bearing 25, which includes an inner ring and an outer ring that can rotate relatively, the axis of the second transmission bearing 25 is the fourth axis, the outer ring of the second transmission bearing 25 is fixed to the top surface of the pitch turntable 15, and the inner ring of the second transmission bearing 25 is fixed to the bottom of the vehicle bracket 12 through a connecting flange. The inner wall of the inner ring of the second transmission bearing 25 is provided with a third transmission tooth 26, and the inner side of the inner ring of the second transmission bearing 25 is also provided with a third driving device 27. Optionally, the third driving device 27 is a driving motor, and the output end of the third driving device 27 is meshed with the third transmission tooth 26 through a transmission gear for transmission. In addition, a second limiting gear 42 and a second feedback device 43 are also provided on the inner side of the inner ring of the second transmission bearing 25. The second limiting gear 42 and the second feedback device 43 are installed on a second mounting seat 44, and the second mounting seat 44 is fixed to the outer ring of the second transmission bearing 25; the second limiting gear 42 is meshed with the third transmission teeth 26 to limit the position of the inner ring of the second transmission bearing 25; the second feedback device 43 is meshed with the third transmission teeth 26 to determine the rotation angle of the inner ring of the second transmission bearing 25 according to the number of teeth of the third transmission teeth 26.

[0037] Furthermore, arc-shaped guide rails 28 and a plurality of second transmission teeth 29 arranged along the extending direction of the arc-shaped guide rails 28 are provided on both sides of the pitch turntable 15, and the center of the arc-shaped guide rails 28 is located on the third axis; The second driving mechanism 17 is provided in a pair and is distributed on both sides of the pitch support frame 16. The second driving mechanism 17 includes: A driving housing 30, wherein the driving housing 30 is fixed to the top of the side wall of the pitch support frame 16; A plurality of track sliders 31, the plurality of track sliders 31 are arranged on one side of the drive housing 30 close to another drive housing 30 and are arranged in an arc shape, the track sliders 31 are provided with an arc groove 32 for clamping the arc guide rail 28, and a sliding ball is provided in the arc groove 32; A second driving device 33 is drivingly connected to the second transmission tooth 29 .

[0038] Specifically, refer to Figure 8 The second driving mechanism 17 is provided with a pair, and the pair of the second driving mechanisms 17 are respectively provided on both sides of the pitch support frame 16. The main body of the second driving mechanism 17 is a driving shell 30, and the interior of the driving shell 30 is hollow. A plurality of track sliders 31 are provided on the outer wall of the pair of driving shells 30 close to each other, and each track slider 31 is provided with an arc-shaped card slot 32. The plurality of track sliders 31 are arranged in an arc shape, so that the arc-shaped card slots 32 on the plurality of track sliders 31 form an arc slot. The pitch turntable 15 is connected to the driving shell 30 by the arc-shaped guide rails 28 provided on both sides being clamped in the arc-shaped card slots 32. When the arc-shaped guide rails 28 slide along the arc-shaped card slots 32, the pitch turntable 15 rotates around the third axis. In order to make the arc-shaped guide rails 28 slide more smoothly, there are also sliding balls in the arc-shaped card slots 32. The track sliders 31 not only guide the pitch turntable 15, but also support the pitch turntable 15. A second driving device 33 is provided inside the driving housing 30. Optionally, the second driving device 33 is composed of a driving motor and a worm gear reducer. The output end of the second driving device 33 extends out of the driving housing 30 and is meshed with a second transmission tooth 29 provided on the pitch turntable 15 through a transmission gear. In addition, a third feedback device 45 is provided on one side of the driving housing 30 where the track slider 31 is provided. The third feedback device 45 is used to determine the rotation angle of the pitch turntable 15 according to the number of teeth of the second transmission tooth 29.

[0039] Furthermore, a first cable drag chain 34 is provided on the bottom surface of the pitch turntable 15, a second cable drag chain 35 is provided on the side of the pitch support frame 16 close to the second axis, a third cable drag chain 36 is provided inside the horizontal support frame 13, and the control cable of the turntable device 9 extends from the pitch turntable 15 to the inside of the bottom support frame 19 via the first cable drag chain 34, the second cable drag chain 35 and the third cable drag chain 36.

[0040] Specifically, refer to Figure 7 and Fig.10 Through the cooperation of the first cable drag chain 34, the second cable drag chain 35 and the third cable drag chain 36, the control cable of the turntable device 9 can be extended to the inside of the bottom support frame 19 to avoid the control cable being exposed. At the same time, the first cable drag chain 34, the second cable drag chain 35 and the third cable drag chain 36 can also reduce the microwave scattering generated on the surface of the control cable.

[0041] Furthermore, at least the base 10 , the horizontal support frame 13 , the pitch support frame 16 , the pitch turntable 15 and the whole vehicle bracket 12 are wrapped with absorbing material 37 .

[0042] Specifically, compare Figure 2 and Figure 4 By wrapping the absorbing material 37 outside the base 10, the horizontal support frame 13, the pitch support frame 16, the pitch turntable 15 and the whole vehicle bracket 12, the absorbing material 37 can absorb the microwaves irradiated on other structures other than the vehicle to be tested in the test quiet area 2, thereby preventing the microwaves from being scattered on the base 10, the horizontal support frame 13, the pitch support frame 16, the pitch turntable 15 and the whole vehicle bracket 12 and affecting the test results.

[0043] Furthermore, a counterweight 38 is installed on the end of the horizontal support frame 13 opposite to the end where the pitch support frame 16 is installed.

[0044] Specifically, Figure 2 and Figure 3 As shown, since the pitch support frame 16 is arranged at one end of the horizontal support frame 13, the pitch support frame 16 is eccentrically arranged relative to the horizontal support frame 13, and the overall center of mass of the structure above the horizontal support frame 13 deviates. In order to reduce the deviation of the center of mass, a counterweight installation bin is arranged at one end of the horizontal support frame 13 away from the pitch support frame 16, and a counterweight member 38 is installed in the counterweight installation bin to reduce the deviation of the center of mass. The weight of the counterweight member 38 can be adaptively adjusted according to the center of mass position of the turntable device 9.

[0045] Example 2 Please refer to Fig.11 This embodiment provides a method for testing a whole vehicle in a compact field, based on the whole vehicle testing system in a compact field as described in Embodiment 1, comprising: The vehicle to be tested is mounted on the vehicle bracket 12 and fixed; The base 10 is moved to move the turntable device 9 to the first station 5, and when the vehicle to be tested is placed in the test quiet zone 2, the quiet zone test begins; The angle of the vehicle to be tested in the test quiet zone 2 is adjusted by the three-axis adjustment mechanism 11 until all positions of the vehicle to be tested are tested in the quiet zone, and the quiet zone test is finished; The transfer track 8 is connected to the first track 3 through the track switching mechanism 7, and the turntable device 9 is moved to the transfer track 8. Then, the transfer track 8 is connected to the second track 4 through the track switching mechanism 7, and the turntable device 9 is moved to the second station 6. Other tests are performed on the vehicle to be tested at the second workstation 6 , and the other tests at least include a lighting test or an EMC test.

[0046] Specifically, when testing is performed using the test method provided in this embodiment, multiple functions of the vehicle to be tested can be tested, and the position of the turntable device 9 can be transferred without affecting each other, thereby effectively improving test accuracy and test efficiency.

[0047] The above description is only a preferred embodiment of the present invention and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present invention is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present invention (but not limited to) to form a technical solution.

Claims

1. A compact field vehicle testing system, characterized in that: include: A darkroom (1), wherein a test quiet zone (2) is formed in the darkroom (1), a first track (3) and a second track (4) which are perpendicular to each other and intersect at a track switching mechanism (7) are provided on the floor of the darkroom (1), a first workstation (5) is provided on the first track (3), and a second workstation (6) is provided on the second track (4); a transfer track (8) is provided on the track switching mechanism (7), and the track switching mechanism (7) can drive the transfer track (8) to rotate around a first axis perpendicular to the floor of the darkroom (1), so that the transfer track (8) is connected to the first track (3) or to the second track (4); A turntable device (9), the turntable device (9) being arranged in the darkroom (1), the turntable device (9) comprising a base (10) and a three-axis adjustment mechanism (11) arranged on the base (10), the base (10) being slidable along the first track (3) and the second track (4), the three-axis adjustment mechanism (11) being connected to a whole vehicle bracket (12), and the three axes of the three-axis adjustment mechanism (11) intersecting at a point above the whole vehicle bracket (12); When the turntable device (9) is placed at the first workstation (5), the three-axis adjustment mechanism (11) suspends the whole vehicle bracket (12) in the test quiet zone (2); when the turntable device (9) is placed at the second workstation (6), the three-axis adjustment mechanism (11) moves the whole vehicle bracket (12) outside the test quiet zone (2).

2. The compact vehicle testing system according to claim 1, characterized in that: The three-axis adjustment mechanism (11) comprises: a horizontal support frame (13), wherein a first driving mechanism (14) is provided at the bottom of the horizontal support frame (13), and the horizontal support frame (13) is driven by the first driving mechanism (14) to rotate relative to the base (10) around a second axis, wherein the second axis is perpendicular to the floor of the darkroom (1); A pitch turntable (15), the pitch turntable (15) being connected to the horizontal support frame (13) via a pitch support frame (16) and a second drive mechanism (17), the pitch support frame (16) being mounted on one end of the horizontal support frame (13), the second drive mechanism (17) being mounted on the top of the pitch support frame (16) and suspending the pitch turntable (15) above the horizontal support frame (13); the pitch turntable (15) being driven by the second drive mechanism (17) to rotate relative to the horizontal support frame (13) around a third axis, the third axis being perpendicular to the second axis; a third driving mechanism (18), the third driving mechanism (18) being mounted on the top of the pitch turntable (15) and connected to the whole vehicle bracket (12), the third driving mechanism (18) being used to drive the whole vehicle bracket (12) to rotate around a fourth axis, the fourth axis being perpendicular to the top surface of the pitch turntable (15); The second axis, the third axis and the fourth axis intersect at a point above the whole vehicle bracket (12).

3. The compact field vehicle testing system according to claim 2, characterized in that: When the turntable device (9) is placed at the first workstation (5), the horizontal support frame (13) is placed outside the test quiet area (2).

4. The compact field vehicle testing system according to claim 3, characterized in that: The first driving mechanism (14) is connected to the base (10) via a bottom support frame (19); the bottom end of the bottom support frame (19) is connected to the base (10); a fine-tuning shim (20) is provided at the top end of the bottom support frame (19); the fine-tuning shim (20) connects the bottom support frame (19) and the first driving mechanism (14); and the fine-tuning shim (20) is used to adjust the height of the bottom support frame (19).

5. The compact field vehicle testing system according to claim 4, characterized in that: The first driving mechanism (14) comprises: A first transmission bearing (21), wherein an outer ring of the first transmission bearing (21) is fixed to the fine-tuning washer (20), an inner ring of the first transmission bearing (21) is fixed to the bottom of the horizontal support frame (13), and a first transmission tooth (23) is provided on an inner wall of the inner ring of the first transmission bearing (21); a first driving device (24), wherein an output end of the first driving device (24) is drivingly connected to the first transmission tooth (23) and is used to drive the inner ring of the first transmission bearing (21) to rotate around the second axis; The third driving mechanism (18) comprises: A second transmission bearing (25), wherein an outer ring of the second transmission bearing (25) is fixed to the top surface of the pitch turntable (15), an inner ring of the second transmission bearing (25) is fixed to the bottom of the vehicle bracket (12), and a third transmission tooth (26) is provided on an inner wall of the inner ring of the second transmission bearing (25); A third driving device (27), wherein an output end of the third driving device (27) is drivingly connected to the third transmission tooth (26) and is used to drive the inner ring of the second transmission bearing (25) to rotate around the fourth axis.

6. The compact field vehicle testing system according to claim 3, characterized in that: Arc-shaped guide rails (28) and a plurality of second transmission teeth (29) arranged along the extending direction of the arc-shaped guide rails (28) are provided on both sides of the pitch turntable (15), and the center of the arc-shaped guide rails (28) is located on the third axis; The second driving mechanism (17) is provided with a pair and is distributed on both sides of the pitch support frame (16), and the second driving mechanism (17) comprises: A drive housing (30), the drive housing (30) being fixed to the top of the side wall of the pitch support frame (16); A plurality of track sliders (31), the plurality of track sliders (31) being arranged on a side of the drive housing (30) close to another drive housing (30) and arranged in an arc shape, the track sliders (31) being provided with an arc-shaped groove (32) for clamping the arc-shaped guide rail (28), and a sliding ball being provided in the arc-shaped groove (32); A second driving device (33), the second driving device (33) is drivingly connected to the second transmission tooth (29).

7. The compact field vehicle testing system according to claim 4, characterized in that: A first cable drag chain (34) is provided on the bottom surface of the pitch turntable (15), a second cable drag chain (35) is provided on a side of the pitch support frame (16) close to the second axis, a third cable drag chain (36) is provided inside the horizontal support frame (13), and a control cable of the turntable device (9) extends from the pitch turntable (15) to the inside of the bottom support frame (19) via the first cable drag chain (34), the second cable drag chain (35) and the third cable drag chain (36).

8. The compact field vehicle testing system according to any one of claims 2 to 6, characterized in that: At least the base (10), the horizontal support frame (13), the pitch support frame (16), the pitch turntable (15) and the whole vehicle bracket (12) are wrapped with wave absorbing material (37) on the outside.

9. The compact field vehicle testing system according to any one of claims 2 to 6, characterized in that: A counterweight (38) is mounted on the end of the horizontal support frame (13) opposite to the end on which the pitch support frame (16) is mounted.

10. A method for testing a complete vehicle in a compact field, characterized in that: The vehicle testing system for a compact field according to any one of claims 1 to 9 comprises: Mounting the vehicle to be tested on the whole vehicle bracket (12) and fixing it; The base (10) is moved to move the turntable device (9) to the first workstation (5), and when the vehicle to be tested is placed in the test quiet zone (2), the quiet zone test begins; The angle of the vehicle to be tested in the test quiet zone (2) is adjusted by the three-axis adjustment mechanism (11) until all positions of the vehicle to be tested are tested in the quiet zone, and the quiet zone test is terminated; The transfer track (8) is connected to the first track (3) through the track switching mechanism (7), and the turntable device (9) is moved onto the transfer track (8); then, the transfer track (8) is connected to the second track (4) through the track switching mechanism (7), and the turntable device (9) is moved to the second workstation (6); Other tests are performed on the vehicle to be tested at the second workstation (6), wherein the other tests at least include a lighting test or an EMC test.

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