Calibration device of radar camera obscura

Abstract

The utility model discloses a calibration device of a radar camera obscura, which belongs to the technical field of radar camera obscura and comprises a radar camera obscura main body. The rotary table assembly is rotationally installed on the bottom wall face of the left side in the radar camera obscura body, the rotary table assembly comprises a rotary table, a rotary table base and a cross laser reflector, and the rotary table assembly comprises a cross rotary table assembly which is driven by a motor to rotate; the radar simulation device and the corner reflection device are fixedly installed on the bottom wall face of the right side in the radar camera obscura body, the radar simulation device comprises a radar simulator and a universal adjusting device, the angle of the radar simulator is adjusted through the universal adjusting device, and the corner reflection device comprises a reflector base, a corner reflector and a universal adjusting device. The corner reflectors are adjusted at multiple angles through the universal adjusting devices, and the two sets of universal adjusting devices are universal adjusters. By calibrating the relative positions of the rotary table assembly, the radar simulation device and the corner reflection device, the detection effect of the radar is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to radar dark box technical field, concretely relates to a kind of calibration device of radar dark box. BACKGROUND

[0002] At present, most of millimeter wave radar darkroom or dark box is guaranteed by mechanical design to relative position of key components in darkroom or dark box, wherein, in this environment, the relative position of turntable, radar, angle reflector, simulator has greater influence on the performance of radar product, because darkroom or dark box is relatively small space, the radar calibrated in this environment is converted into larger space in actual environment after actual loading, therefore, in the environment that radar needs the size space of darkroom or dark box is smaller, the relative position of each key component is as accurate as possible, to make radar obtain more software calibration and actual assembly error in actual environment, finally make radar reach use requirement on vehicle.

[0003] After retrieval, a kind of radar dark box testing device of CN212008917U, including a sealed box body, the inner wall of the sealed box body is all laid wave-absorbing material, including at least one radar turntable module, radar product is placed into the radar turntable module, the radar turntable module includes clamp, the clamp includes clamping device and power connection in it, the clamping device automatically clamps radar product, the power connection connects circuit board and electric wire circuit, automatically powers on and sends radar data to industrial computer, the sealed box body includes linear slide rail, arc slide rail, target simulator, the target simulator is connected on linear slide rail or arc slide rail by sliding rod.

[0004] The above known technology, its radar dark box does not set up the mechanism for the relative position calibration of turntable, angle reflector and radar simulator, in use process, because turntable, angle reflector and radar simulator are used for a long time, the wear and tear of its rotation surface will obviously affect the relative position between turntable, angle reflector and radar simulator, thereby affecting the detection effect of radar.

[0005] Based on this, the utility model designs a kind of calibration device of radar dark box to solve above-mentioned problem. UTILITY MODEL CONTENT

[0006] In view of the above-mentioned shortcomings of prior art, the utility model provides a kind of calibration device of radar dark box.

[0007] To achieve the above object, the utility model is realized by the following technical scheme:

[0008] The application discloses a calibration device for a radar dark box, which comprises a radar dark box body, a rotary table assembly rotatably arranged on the bottom wall of the left side of the interior of the radar dark box body, a radar simulation device and an angle reflection device fixedly arranged on the bottom wall of the right side of the interior of the radar dark box body, and a horizontal detection device arranged on the bottom wall of the interior of the radar dark box body.

[0009] Further, the horizontal detection device further comprises an angle adjusting mechanism, the angle adjusting mechanism comprises a mounting shell fixedly arranged on the top wall of the transmission rotating rod, a mounting frame fixedly arranged on the bottom wall of the horizontal detection instrument, a mounting sliding groove arranged on the bottom wall of the mounting frame, a connecting sliding block slidingly arranged in the mounting sliding groove, a connecting sleeve rotatably arranged on the top wall of the connecting sliding block, a threaded rod slidingly arranged in the connecting sleeve, a support block rotatably arranged on the bottom wall of the threaded rod, an electric telescopic rod fixedly arranged on the outer wall of the mounting frame, and the telescopic end of the electric telescopic rod is fixedly arranged on the wall of the connecting sleeve away from the connecting sliding block.

[0010] Further, the bottom wall of the mounting frame is rotatably arranged on the bottom wall in the mounting shell through balls, the outer wall of the threaded rod penetrates through the bottom wall of the connecting sleeve, the threaded rod is slidingly connected with the bottom wall of the connecting sleeve, the threaded rod is screw-connected with the connecting sliding block, and the telescopic end of the electric telescopic rod is fixedly arranged on the wall of the connecting sliding block away from the connecting sleeve.

[0011] Further, the angle adjusting mechanism further comprises a limiting sliding block fixedly arranged on the outer wall of the threaded rod and a friction wheel one fixedly arranged on the outer wall of the connecting sleeve.

[0012] Further, a limiting sliding groove is formed on the outer wall of the connecting sleeve, a limiting sliding block is in sliding connection with the limiting sliding groove, the limiting sliding block and the limiting sliding groove are mutually matched, the angle adjusting mechanism is provided with four groups, and the four groups of angle adjusting mechanisms are distributed in the shape of equal arcs at 90 degrees.

[0013] Further, a driving motor is fixedly installed on the top wall surface in the cavity of the mounting frame; a friction wheel two is fixedly installed on the rotating end of the driving motor, and the friction wheel two is located at the position in the middle of the four groups of friction wheels one.

[0014] Further, wave-absorbing cotton is fixedly installed in the interior of the radar dark box body, the wave-absorbing cotton is fixedly installed on the inner wall of the radar dark box body in a detachable manner, the wave-absorbing cotton is provided with multiple groups, and the multiple groups of wave-absorbing cotton are arranged around the turntable assembly, the horizontal detection device, the radar simulation device and the angle reflection device.

[0015] Further, a detection plate is fixedly installed on the right side wall surface of the electric sliding rail, a light-transmitting groove in the shape of T is formed on the left side wall surface of the detection plate, if the horizontal detector is in a normal angle, the light of the horizontal detector can pass through the light-transmitting groove, so that whether the horizontal detector is in an angle deviation condition can be judged, and adjustment can be facilitated.

[0016] Compared with the prior art, the utility model has the advantages that: 1. by relative position of turntable assembly, radar simulation device and angle reflection device is adjusted, improve the detection effect of radar.

[0017] 2. by setting angle adjusting mechanism, can carry out horizontal calibration to horizontal detector, can improve the calibration precision of turntable assembly, radar simulation device and angle reflection device, in addition, can carry out height adjustment to horizontal detector, to adapt to different use scene. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0019] Figure 1 It is the left side view of the whole utility model;

[0020] Figure 2 It is the front view of the whole utility model;

[0021] Figure 3 It is the right side view of the whole utility model;

[0022] Figure 4It is a perspective view of the horizontal detection device of the utility model.

[0023] Figure 5 It is a perspective view of the radar simulation device of the utility model.

[0024] Figure 6 It is a perspective view of the horizontal detection device of the utility model.

[0025] Figure 7 It is a sectional perspective view of the installation shell of the utility model.

[0026] Figure 8 It is Figure 7 An enlarged view of position A.

[0027] The reference numerals in the drawings represent respectively:

[0028] 1, radar dark box main body; 2, turntable assembly; 3, horizontal detection device; 31, horizontal detection instrument; 32, electric sliding rail; 33, installation base; 34, transmission rotating rod; 35, detection plate; 36, angle adjusting mechanism; 361, installation shell; 362, installation frame; 363, installation sliding groove; 364, connecting sliding block; 365, friction wheel one; 366, connecting sleeve; 367, threaded rod; 368, supporting block; 369, electric telescopic rod; 370, limiting sliding block; 371, limiting sliding groove; 372, driving motor; 373, friction wheel two; 4, radar simulation device; 5, angle reflection device; 6, wave-absorbing cotton. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] In the following description, "left", "right", "front", "rear", "upper", "lower" are oriented with the perspective of the front view.

[0031] The utility model will be further described in combination with the embodiments.

[0032] Embodiment one: please refer to the drawings in the description Figure 1 - Figure 6A calibration device of a radar dark box, comprising a radar dark box body 1; a rotary table assembly 2 rotatably installed on the left bottom wall surface inside the radar dark box body 1, the rotary table assembly 2 comprising a rotary table, a rotary table base and a cross laser reflector, the rotary table assembly 2 being rotatable by a motor drive; a radar simulation device 4 and an angle reflection device 5 fixedly installed on the right bottom wall surface inside the radar dark box body 1, the radar simulation device 4 comprising a radar simulator and a universal adjusting device, the radar simulator being angularly adjustable by the universal adjusting device, the angle reflection device 5 comprising a reflector base, an angle reflector and a universal adjusting device, the angle reflector being multi-angulably adjustable by the universal adjusting device, both sets of universal adjusting devices being universal adjusters, which are not described herein again; a horizontal detection device 3 arranged on the bottom wall surface inside the radar dark box body 1, the horizontal detection device 3 being located between the radar simulation device 4 and the rotary table assembly 2;

[0033] The horizontal detection device 3 comprises two sets of horizontal detectors 31 arranged inside the radar dark box body 1, the other set of horizontal detectors 31 being fixed by a tripod and placed on the bottom wall surface inside the radar dark box body 1; a transmission rotating rod 34 arranged on the bottom of the horizontal detector 31, the transmission rotating rod 34 being driven by a motor; an electric sliding rail 32 fixedly installed on the bottom wall surface inside the radar dark box body 1 by a bolt; a mounting base 33 slidably connected with the electric sliding rail 32 by a sliding block, the transmission rotating rod 34 being rotatably connected to the top wall surface of the mounting base 33.

[0034] In particular use, first need to fix another group of horizontal detector 31 on the tripod, and placed between the horizontal detection device 3 and the turntable assembly 2 position, with the tripod horizontal detector 31 is located in the front side of the turntable assembly 2, through the screw below the turntable base, adjust the level of the turntable, the front coated film lens fit in the center of the turntable, using tape fixed, open the vertical light surface of horizontal detector 31, through the electric slide rail 32 and the installation base 33, adjust the front and back position of horizontal detector 31 in horizontal direction, make its vertical light surface through the turntable cross laser center and the angle reflector cone center vertex, so that the front coated film lens will form a reflected light beam reflected to the inner wall of the angle reflector fixed side, this time observe the vertical laser surface, will have two laser beams, if not obvious can slowly rotate the turntable, clearly observe the two beams, slowly rotate the turntable, to the small angle of continuous debugging make two light beams close to coincide, and coincide in the angle reflector center of the cone center vertex, take off the lens on the turntable, transfer to fit in the angle reflector, using tape fixed, observe the two light beam surface at the end of the turntable, then through the universal adjusting device to make the angle reflector rotate, make the two light beam surface at the end of the turntable coincide, this time the fixed bottom surface of the turntable and the edge of the angle reflector composed of the plane, will reach parallel, this time the vertical light beam surface of horizontal detector 31 is just perpendicular to the two planes, this time the horizontal detector 31 is fixed deadbolt, then use the tiltmeter fit in the horizontal plane of the turntable, observe the tiltmeter display angle, adjust the turntable, make the tiltmeter display angle gradually reach 0±0.01°, then open the horizontal laser plane of the level detector 31, then adjust the horizontal laser plane of the level detector 31 to pass through the center of the cross laser reflector, then observe the horizontal laser beams on the inner wall of the radar cabinet main body 1 and the reflected laser beams from the front coated lens fixed on the edge of the corner reflector, then adjust the angle of the corner reflector through the universal adjusting device, so that the two horizontal laser beams coincide, at this time, remove the front coated lens fixed on the corner reflector, open the vertical laser beam of the right level detector 31 and the horizontal laser beam of the left level detector 31 at the same time, confirm whether the two laser beams intersect at the vertex of the corner reflector cone center, if so, the horizontal and pitch planes of the turntable and the corner reflector are adjusted, then turn off the laser beams of the two level detection devices 3, then open the cross laser reflector at the center of the radar fixed on the turntable, adjust the cross laser beam so that the cross center is aligned with the vertex of the corner reflector cone center, at this time, the cross laser is adjusted, indicating that the horizontal and pitch angles of the turntable are calibrated; and the zero point of the turntable is cleared, finally, the turntable is turned to the angle specified in the radar simulator design, then the angle of the simulator is adjusted through the universal adjusting device, so that the simulator horn is in the center of the cross laser of the turntable, at this time, the front coated lens is attached to the horn, the cross laser on the turntable is observed, the angle of the radar simulator is adjusted through the universal adjusting device, so that the cross laser center coincides with the center of the cross laser emitting hole of the turntable, at this time, the lens is removed, it is confirmed that the cross center is also in the center of the simulator horn, the position of the simulator is positioned, the center of the turntable is returned to zero, it is confirmed that the cross laser of the turntable is aligned with the vertex of the corner reflector cone, and the turntable is turned to the fixed design angle of the radar simulator again, it is confirmed that the cross laser of the turntable is aligned with the center of the simulator horn, at this time, the horizontal and pitch angles of the turntable, the cross laser of the turntable, the corner reflector, and the horn of the simulator are calibrated and positioned, through the calibration method, the relative position accuracy between the turntable assembly 2, the radar simulation device 4 and the corner reflection device 5 can be improved, and the detection effect of the radar can be improved.

[0035] Example two: please refer to the description of example one Figure 5 - Figure 8The horizontal detection device 3 further comprises an angle adjusting mechanism 36, which comprises a mounting shell 361 fixedly installed on the top wall surface of the transmission rotating rod 34; a mounting frame 362 fixedly installed on the bottom wall surface of the horizontal detector 31, the bottom wall surface of the mounting frame 362 being rotatably installed on the bottom wall surface inside the mounting shell 361, the bottom wall surface of the mounting frame 362 being provided with a mounting sliding groove 363; a connecting sliding block 364 slidably installed inside the mounting sliding groove 363; a connecting sleeve 366 rotatably installed on the top wall surface of the connecting sliding block 364; a threaded rod 367 slidably installed inside the connecting sleeve 366, the outer wall of the threaded rod 367 penetrating through the bottom wall surface of the connecting sleeve 366, the threaded rod 367 being slidably connected with the bottom wall surface of the connecting sleeve 366; a supporting block 368 rotatably installed on the bottom wall surface of the threaded rod 367; and an electric telescopic rod 369 fixedly installed on the outer wall of the mounting frame 362.

[0036] The angle adjusting mechanism 36 further comprises a limiting sliding block 370 fixedly installed on the outer wall of the threaded rod 367; a limiting sliding groove 371 provided on the outer wall of the connecting sleeve 366, the limiting sliding block 370 and the limiting sliding groove 371 being slidably connected, the limiting sliding block 370 and the limiting sliding groove 371 being mutually adapted; and a friction wheel one 365 fixedly installed on the outer wall of the connecting sleeve 366, the angle adjusting mechanism 36 being provided with four groups, and the four groups of angle adjusting mechanisms 36 being distributed in a ninety-degree equi-arc shape.

[0037] The cavity top wall surface of the mounting frame 362 is fixedly installed with a driving motor 372; the driving motor 372 is fixedly installed with a friction wheel two 373 at the rotating end, the friction wheel two 373 being located at the position in the middle of the four groups of friction wheel ones 365.

[0038] The inside of the radar dark box main body 1 is fixedly installed with wave-absorbing cotton 6, the wave-absorbing cotton 6 being fixedly installed on the inner wall of the radar dark box main body 1 in a detachable manner, the wave-absorbing cotton 6 being provided with multiple groups, and the multiple groups of wave-absorbing cotton 6 being respectively arranged around the turntable assembly 2, the horizontal detection device 3, the radar simulation device 4 and the corner reflector device 5.

[0039] The right side wall surface of the electric sliding rail 32 is fixedly installed with a detection plate 35, the left side wall surface of the detection plate 35 being provided with a T-shaped light transmission groove, if the horizontal detector 31 is at a normal angle, the light of the horizontal detector 31 can pass through the light transmission groove, so as to facilitate the judgment of whether the horizontal detector 31 appears an angle deviation condition, and facilitate the adjustment.

[0040] In specific use, by setting an angle sensor on the level detector 31, the level condition of the level detector 31 is detected through the angle sensor, if the level detector 31 is in an inclined condition, the telescopic end of the electric telescopic rod 369 is elongated, the connecting sliding block 364 slides in the inside of the installation sliding groove 363 towards the friction wheel two 373, until the friction wheel one 365 and the friction wheel two 373 are attached together, the driving motor 372 is started, the output end of the driving motor 372 rotates in different directions according to the inclined condition, for example, the output end of the driving motor 372 rotates forward with the friction wheel two 373, the friction wheel one 365 rotates forward with the connecting sleeve 366, under the limitation of the limiting sliding block 370 and the limiting sliding groove 371, the threaded rod 367 will move downwards with the supporting block 368, the supporting block 368 will contact and extrude with the bottom wall in the cavity of the installation shell 361, the installation frame 362 is lifted, since the installation frame 362 is connected with the bottom wall in the inside of the installation shell 361 through the ball and rotates, according to the inclined condition of the installation frame 362, one group of the friction wheel one 365 and the friction wheel two 373 are attached, so that the height of the side close to the installation frame 362 is higher, until the level detector 31 is in a horizontal state, so that the precision of the level detector 31 during detection is ensured, the overall calibration precision is improved, in addition, four groups of the friction wheel one 365 and the friction wheel two 373 can be attached at the same time, and the four groups of the friction wheel one 365 are rotated, according to the different rotating directions, the height of the level detector 31 is changed, so as to adapt to different use scenes.

[0041] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A calibration device for a radar chamber, comprising a radar chamber body (1), characterized in that: Also include the rotating installation in the radar dark box main part (1) inside the left side bottom wall surface rotating table assembly (2); Fixedly installed in the radar dark box main part (1) inside the right side bottom wall surface radar simulation device (4) and corner reflection device (5); The horizontal detection device (3) is arranged in the bottom wall surface of the radar dark box main part (1) inside, and the horizontal detection device (3) is located between the radar simulation device (4) and the rotating table assembly (2) position; The horizontal detection device (3) includes the horizontal detector (31) arranged in the radar dark box main part (1) inside, and the horizontal detector (31) is provided with two groups, and the other group of horizontal detector (31) is fixed by tripod and placed on the bottom wall surface in the cavity of radar dark box main part (1); Transmission rotating rod (34) is arranged at the bottom of horizontal detector (31); Electric slide rail (32) is fixedly installed in the bottom wall surface of radar dark box main part (1) inside; The mounting base (33) is slidably connected with electric slide rail (32) through sliding block, and the transmission rotating rod (34) is rotatably connected to the top wall surface of mounting base (33).

2. The radar dark box calibration device of claim 1, wherein, The horizontal detection device (3) further includes angle adjusting mechanism (36), and the angle adjusting mechanism (36) includes mounting shell (361) fixedly installed on the top wall surface of transmission rotating rod (34); The mounting frame (362) is fixedly installed on the bottom wall surface of horizontal detector (31), and the bottom wall surface of mounting frame (362) is provided with mounting sliding groove (363); The connecting sliding block (364) is slidably installed in the mounting sliding groove (363); The connecting sleeve (366) is rotatably installed on the top wall surface of connecting sliding block (364); The threaded rod (367) is slidably installed in the connecting sleeve (366), and the connecting sliding block (364) is threadedly connected with the wave-absorbing cotton (6) of mounting base (33); The support block (368) is rotatably installed on the bottom wall surface of threaded rod (367); The electric telescopic rod (369) is fixedly installed on the wall surface away from connecting sliding block (364) and connecting sleeve (366) of one end of electric telescopic rod (369) and the wall surface of connecting sleeve (366).

3. The radar dark box calibration device of claim 2, wherein, The bottom wall surface of mounting frame (362) is rotatably installed on the bottom wall surface of mounting shell (361) through ball, the outer wall of threaded rod (367) penetrates the bottom wall surface of connecting sleeve (366), the threaded rod (367) is slidably connected with the bottom wall surface of connecting sleeve (366), the threaded rod (367) is threadedly connected with connecting sliding block (364), and the telescopic end of electric telescopic rod (369) is fixedly installed on the wall surface of connecting sliding block (364) away from connecting sleeve (366).

4. The radar dark box calibration device of claim 3, wherein, The angle adjusting mechanism (36) further includes limiting sliding block (370) fixedly installed on the outer wall of threaded rod (367); And friction wheel one (365) fixedly installed on the outer wall of connecting sleeve (366).

5. The radar dark box calibration device of claim 4, wherein, The connecting sleeve (366) is provided with a limiting sliding groove (371) on the outer wall, a limiting sliding block (370) is slidably connected with the limiting sliding groove (371), the limiting sliding block (370) and the limiting sliding groove (371) are matched with each other, four angle adjusting mechanisms (36) are arranged, and the four angle adjusting mechanisms (36) are distributed in the shape of an equicircular arc with an angle of 90 degrees.

6. The radar dark box calibration device of claim 5, wherein, The driving motor (372) is fixedly installed on the top wall in the cavity of the mounting frame (362); a friction wheel two (373) is fixedly installed at the rotating end of the driving motor (372), and the friction wheel two (373) is located at the middle position of the four friction wheels one (365).

7. The radar dark box calibration device of claim 1, wherein, The inside of the radar dark box body (1) is fixedly installed with wave-absorbing cotton (6), the wave-absorbing cotton (6) is fixedly installed on the inner wall of the radar dark box body (1) in a detachable manner, the wave-absorbing cotton (6) is provided with multiple groups, and the multiple groups of wave-absorbing cotton (6) are arranged around the turntable assembly (2), the horizontal detection device (3), the radar simulation device (4) and the angle reflection device (5) respectively.

8. The radar dark box calibration device of claim 1, wherein, The electric sliding rail (32) is fixedly installed with a detection plate (35) on the right side wall, and the left side wall of the detection plate (35) is provided with a light-transmitting groove in the shape of T.

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