CN107843883B

CN107843883B - Radar calibration piece and vehicle-mounted radar calibration equipment

Info

Publication number: CN107843883B
Application number: CN201711421901.8A
Authority: CN
Inventors: 王小龙
Original assignee: Autel Intelligent Technology Corp Ltd
Current assignee: Autel Intelligent Technology Corp Ltd
Priority date: 2017-12-25
Filing date: 2017-12-25
Publication date: 2020-10-23
Anticipated expiration: 2037-12-25
Also published as: CN107843883A

Abstract

The invention relates to the technical field of equipment calibration and discloses a radar calibration piece and vehicle-mounted radar calibration equipment. The radar scale includes: the base plate is used for reflecting radar waves sent by a vehicle-mounted radar of an automobile to be calibrated to the vehicle-mounted radar after the vertical surface of the base plate is calibrated; the base plate is hinged with the fixed rotating shaft, can rotate around the central axis of the fixed rotating shaft and can stay at least at a first position, a second position and a third position; when the substrate stays at the first position, the substrate is vertically arranged; when the substrate stays at the second position, the substrate forms an included angle with the vertical direction; when the substrate stays at the third position, an included angle is formed between the substrate and the vertical direction, the substrate at the second position and the substrate at the third position are symmetrical relative to the substrate at the first position, and the included angle is smaller than the allowable angle deviation value of the vehicle-mounted radar. Through the technical scheme, the adjusting precision of the radar calibration piece can be improved.

Description

Radar calibration piece and vehicle-mounted radar calibration equipment

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of automobile maintenance and equipment calibration, in particular to a radar calibration piece and vehicle-mounted radar calibration equipment.

[ background of the invention ]

In the field of Advanced Driver Assistance Systems (ADAS) of automobiles, an Adaptive Cruise Control (ACC) is a commonly used assistance function. The specific working principle is that the vehicle-mounted radar measures the distance of the front vehicle in real time, compares the self vehicle speed with the front vehicle speed, and controls power systems of an accelerator, a brake and the like of the vehicle at the same time, so that the vehicle and the front vehicle keep a constant safe distance all the time. Therefore, the action of the vehicle-mounted radar is important in the realization of the ACC function, and besides the measurement performance of the radar, the installation position and the installation angle of the radar all determine the accuracy and precision of the final measurement data. The installation position and the installation angle can be changed due to uncontrollable factors such as vibration and collision generated by the use of the vehicle, so that the calibration of the vehicle-mounted radar is the core content in the fields of automobile maintenance and equipment calibration, particularly in the ACC function calibration. At present, most of calibration of the vehicle-mounted radar is afterloading calibration, namely after the vehicle leaves a factory and is delivered to a user for use for a period of time, the vehicle-mounted radar needs to be calibrated for objective reasons.

In the process of implementing the invention, the inventor finds that the inclination angle of the radar reflecting plate is adjusted by adopting a spring and a clamping groove mode in the automobile radar calibration device on the market at present, the adjustment precision is not high when the device is used, the rotation is not smooth, and the spring is easy to lose efficacy in the use process.

[ summary of the invention ]

In order to solve the technical problems, embodiments of the present invention provide a radar calibration piece and a vehicle-mounted radar calibration device, which can solve the problem of low adjustment precision of the existing radar calibration piece.

The embodiment of the invention adopts the following technical scheme for solving the technical problems:

the embodiment of the invention provides a radar scaling member, which is used for being installed on a support device of a vehicle-mounted radar scaling device, and comprises the following components:

the base plate is used for reflecting radar waves sent by a vehicle-mounted radar of an automobile to be calibrated to the vehicle-mounted radar after the vertical surface of the base plate is calibrated so as to calibrate the vehicle-mounted radar;

the base plate is hinged with the fixed rotating shaft, can rotate around the central axis of the fixed rotating shaft and can stay at least at a first position, a second position and a third position; when the substrate stays at the first position, the substrate is vertically arranged; when the substrate stays at the second position, the substrate forms an included angle with the vertical direction; when the base plate stays at the third position, the base plate and the vertical direction form the included angle, the base plate at the second position and the base plate at the third position are symmetrical relative to the base plate at the first position, and the included angle is smaller than the allowable angle deviation value of the vehicle-mounted radar.

Optionally, the radar scaling piece further comprises a mounting bracket and an adjusting bracket;

the mounting bracket is mounted on the base plate and hinged to the adjusting bracket through the fixed rotating shaft.

Optionally, the radar calibration member further includes an angle adjustment component, and the angle adjustment component is configured to adjust the substrate such that the substrate can stay at the first position, the second position, or the third position, respectively.

Optionally, the radar marking piece further comprises an adjusting rod;

the adjusting bracket is hinged with the adjusting rod;

the angle adjusting assembly comprises a cam disc, the cam disc is provided with a cam groove, the bottom wall of the cam groove is at least provided with a first positioning hole, a second positioning hole and a third positioning hole, and the cam disc is sleeved on the adjusting rod;

the mounting bracket is provided with a convex column, the convex column is accommodated in the cam groove, and the convex column can slide in the cam groove and can be inserted into the first positioning hole, the second positioning hole or the third positioning hole;

when the convex column is inserted into the first positioning hole, the substrate stays at the first position; when the convex column is inserted into the second positioning hole, the substrate stays at the second position; when the convex column is inserted into the third positioning hole, the substrate stays at the third position.

Optionally, the cam groove includes at least three arcs of different curvatures, and the arcs of different curvatures are connected in sequence from large to small.

Optionally, the angle adjusting assembly further includes a cam spring, the cam spring is fixedly installed in the cam groove, the cam spring includes at least three through holes, and each of the first positioning hole, the second positioning hole, and the third positioning hole is aligned with a corresponding one of the through holes;

the convex column abuts against the cam elastic sheet, and when the convex column slides in the cam groove, the convex column and the cam elastic sheet slide and rub.

Optionally, the angle adjustment assembly further comprises a first clasping member, a second clasping member and a pin;

the first holding piece is fixedly arranged on the cam plate;

the first clasping member and the second clasping member clasp the adjusting rod between the first clasping member and the second clasping member;

the one end of pin is passed first hugging closely the piece is fixed in the second hugging closely the piece will first hugging closely the piece lock in the second hugging closely for adjust the pole tightly pressed from both sides tightly in first hugging closely with between the piece is hugged closely to the second, the angle modulation pole can with adjust the pole and rotate together.

Optionally, the mounting bracket comprises at least one first mounting projection and at least one second mounting projection;

the adjustment bracket includes at least one first mounting ear and at least one second mounting ear;

the at least one first mounting protrusion and the at least one first mounting lug are respectively sleeved on the fixed rotating shaft, so that the mounting bracket is hinged to the adjusting bracket through the fixed rotating shaft;

the number of the angle adjusting assemblies is at least one;

each second mounting protrusion is provided with one convex column, and the convex column of each second mounting protrusion is accommodated in the cam groove of one cam disc corresponding to the convex column;

the adjustment rod passes through the at least one second mounting lug and the cam plate of the at least one angle adjustment assembly.

Optionally, the number of the mounting brackets is two, the two mounting brackets are spaced by a preset distance and arranged in parallel, and each mounting bracket comprises a first mounting protrusion and a second mounting protrusion;

the adjusting bracket comprises two first mounting lugs and two second mounting lugs;

the two first mounting bulges and the two first mounting lugs are respectively sleeved on the fixed rotating shaft, so that the mounting bracket is hinged to the adjusting bracket through the fixed rotating shaft;

the adjusting rod sequentially penetrates through one second mounting lug, the two cam plates and the other second mounting lug;

each second mounting lug is provided with one convex column.

Optionally, the two convex columns of the two second mounting protrusions are arranged oppositely along the same straight line.

The embodiment of the invention also provides vehicle-mounted radar calibration equipment which comprises the radar calibration piece.

Compared with the prior art, the base plate of the radar scaling piece provided by the embodiment of the invention can stay at the first position, the second position and the third position, and the deviation of the installation position and the deviation of the dB value of the vehicle-mounted radar can be respectively recorded at the three positions where the base plate stays, so that the adjustment precision of the radar scaling piece can be improved, and therefore, when the radar scaling piece is applied to vehicle-mounted radar scaling equipment, the deviation of the installation position and the deviation of the dB value of the vehicle-mounted radar can be accurately calibrated.

[ description of the drawings ]

One or more embodiments are illustrated in drawings corresponding to, and not limiting to, the embodiments, in which elements having the same reference number designation may be represented as similar elements, unless specifically noted, the drawings in the figures are not to scale.

Fig. 1 is a perspective view of a vehicle-mounted radar calibration apparatus according to an embodiment of the present invention;

FIG. 2 is a perspective view of a bracket assembly of the calibration apparatus shown in FIG. 1;

FIG. 3 is a perspective view of another angle of the bracket device shown in FIG. 2;

FIG. 4 is a front view of the holder apparatus shown in FIG. 3;

FIG. 5 is a perspective view of a laser of the calibration apparatus shown in FIG. 1;

FIG. 6 is a perspective view of another angle of the laser shown in FIG. 5;

FIG. 7 is a perspective view of the diaphragm of the calibration apparatus shown in FIG. 1;

FIG. 8 is a perspective view of another angle of the diaphragm shown in FIG. 7;

FIG. 9 is a perspective view of a radar scale of the calibration apparatus shown in FIG. 1;

FIG. 10 is a perspective view of another angle of the radar scale shown in FIG. 9;

FIG. 11 is a partial exploded view of the radar index member shown in FIG. 9;

FIG. 12 is a partial exploded view of another angle of the radar scale shown in FIG. 9;

FIG. 13 is an exploded view of the angle adjustment assembly of the radar index member shown in FIG. 9;

fig. 14 is a partially enlarged view of a portion a in fig. 12;

FIG. 15 is a schematic diagram of the calibration of a vertical plane of a radar calibration member using a calibration apparatus according to an embodiment of the present invention;

fig. 16 to 18 are schematic diagrams illustrating calibration of a vehicle-mounted radar by the calibration apparatus according to the embodiment of the present invention.

[ detailed description ] embodiments

In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, a vehicle-mounted radar calibration apparatus 500 according to an embodiment of the present invention includes a support device 100, a laser 200, a diaphragm 300, and a radar calibration member 400. The radar marker 400 is mounted to the stand apparatus 100 and is movable in a horizontal direction or in a vertical direction with respect to the stand apparatus 100. The holder device 100 is used to support the radar marker 400. The laser 200 is used for emitting a laser beam, the diaphragm 300 is used for controlling whether the laser beam passes through the diaphragm 300, and the radar scaling piece 400 is used for reflecting the laser beam passing through the diaphragm 300 and enabling the laser beam to return to the laser 200 along the original path, so that the vertical surface of the radar scaling piece 400 is calibrated. The radar calibration piece 400 is also used for reflecting radar waves emitted by the vehicle-mounted radar so as to calibrate the mounting position and the mounting angle of the vehicle-mounted radar.

Referring to fig. 2, the supporting device 100 includes a supporting frame assembly 10, a beam assembly 20 and a sliding member 30. The beam assembly 20 is mounted to the bracket assembly 10 to be vertically movable relative to the bracket assembly 10. The slider 30 is mounted to the beam assembly 20 so as to be movable in a horizontal direction relative to the beam assembly 20. The radar marker 400 is mounted to the slider 30 to be movable in a horizontal direction together with the slider 30 with respect to the beam assembly 20.

The bracket assembly 10 comprises a base bracket 11 and a vertical rod bracket 12, wherein one end of the vertical rod bracket 12 is connected with the base bracket 11, and the base bracket 11 supports the vertical rod bracket 12.

Referring to fig. 3 to 4, the base bracket 11 includes a bracket body 110, a roller 112 and a height adjusting member 114. The bracket body 110 is a rectangular flat plate, and may be made of a metal material, and a plurality of hollow areas are formed to reduce weight. The stent body 110 includes a bottom surface 1100 and an upper surface 1102 disposed opposite one another. The holder body 110 has a central axis O1.

The roller 112 is mounted to the bottom surface 1100 for facilitating movement of the base bracket 11. In this embodiment, the rollers 112 are universal moving rollers, so that the base bracket 11 can move freely in front, back, left and right directions, and the number of the rollers 112 is four and the four rollers are respectively mounted at four corners of the bracket body 110. It is understood that in some other embodiments, the shape of the stent body 110 may vary according to actual needs, and is not limited to being rectangular, for example, the stent body 110 may be circular; the number of the rollers 112 can be increased or decreased according to actual requirements, and is only required to be at least three.

The height adjuster 114 is mounted to the bottom surface 1100 for adjusting the height of the stand body 110. In this embodiment, the height adjusting members 114 are adjusting handwheels, and the number of the adjusting handwheels is three. Three adjusting handwheels 114 are distributed in an isosceles triangle shape, two adjusting handwheels 114 positioned on the bottom side of the isosceles triangle are arranged on one side of the bracket body 110 and symmetrically arranged along the central axis O1 of the bracket body 110, and the other adjusting handwheel 114 is arranged on the other side of the bracket body 110 and arranged on the central axis O1 of the bracket body 110 (namely arranged at the vertex position of the vertex angle of the isosceles triangle). The three adjusting handwheels 114 are matched to adjust the horizontal angle of the whole bracket body 110, and the pitch angle of the bracket body 110 can be adjusted by independently adjusting the adjusting handwheels 114 on the central axis O1 of the bracket body 110.

It is understood that the height adjustment member 114 may be other height adjustable devices; the number of the height adjusting members 114 can be increased according to actual requirements, and the number of the height adjusting members is at least three, and three of the height adjusting members 114 are arranged in the distribution manner.

The upright support 12 includes a lifting rail 120, a lifting screw 122, a lifting crank 124 and a height gauge 126.

The lifting rail 120 is installed on the bracket body 110, and the lifting rail 120 includes a vertical rod 1200, a horizontal rod 1202 and a bottom rod 1204. The two vertical rods 1200 are arranged in parallel in the vertical direction and spaced apart by a predetermined distance, so as to guide the beam assembly 20 to move in the vertical direction. The cross bar 1202 is disposed along the horizontal direction, and two ends of the cross bar 1202 are respectively mounted on the two vertical bars 1200. The bottom rod 1204 is fixedly installed on the bracket body 110, and one end of each vertical rod 1200 far away from the cross rod 1202 is fixedly installed on the bottom rod 1204.

It will be appreciated that in some other embodiments, the number of the vertical rods 1200 may be increased or decreased according to the actual situation, for example, the number of the vertical rods 1200 may be 1 or 3.

The lifting screw 122 is fixedly installed on the lifting guide rail 120 along a vertical direction, one end of the lifting screw 122 is fixedly installed on the cross rod 1202, and the other end of the lifting screw 122 is fixedly installed on the bottom rod 1204.

It will be appreciated that in some other embodiments, the bottom rod 1204 may be omitted and the end of each vertical rod 1200 remote from the cross rod 1202 is fixedly mounted to the bracket body 110. The lifting screw 122 is arranged along the vertical direction, one end of the lifting screw 122 is fixedly installed on the cross rod 1202, and the other end of the lifting screw 122 is fixedly installed on the bracket body 110.

The lifting rocking handle 124 is mounted on the cross bar 1202 and connected with the lifting screw 122 for rotation, so as to drive the lifting screw 122 to rotate around the central axis thereof. In this embodiment, the connecting rod of the lifting rocking handle 124 is perpendicular to the lifting screw 122, and is connected with the lifting screw 122 through a gear structure. It is understood that in some other embodiments, the connecting rod of the lifting crank 124 may be coaxial with the lifting screw 122, and the connecting rod of the lifting crank 124 is directly connected with the lifting screw 122; alternatively, the lifting crank 124 may be replaced with other devices for driving the lifting screw 122 to rotate, for example, a motor or the like.

The height gauge 126 is vertically installed on the vertical rod 1200, and the height gauge 126 has a scale for measuring a moving distance of the beam assembly 20 in the vertical direction.

Referring again to fig. 2 and 3, the beam assembly 20 includes a support member 210, a guide rail 212, and a level 214. The support member 210 is mounted to the lifting rail 120, and the support member 210 is movable in a vertical direction with respect to the lifting rail 120 under the guidance of the lifting rail 120. The guide rail 212 is fixedly installed to the support member 210, and is movable in a vertical direction with respect to the lift rail 120 together with the support member 210. The slider 30 is mounted on the guide rail 212 and is movable in the horizontal direction relative to the guide rail 212.

The support 210 includes a support body 2102, a movable block 2104, and a slider 2106.

The supporting body 2102 is substantially plate-shaped, two clamping portions 2108 extend from two opposite sides of the supporting body, and the two clamping portions 2108 are strip-shaped and are arranged in parallel in the horizontal direction and are spaced by a preset distance.

The movable block 2104 is fixedly mounted on the supporting body 2102 and sleeved on the lifting screw 122. The movable block 2104 is in threaded fit with the lifting screw 122, and when the lifting screw 122 rotates around the central axis thereof, the movable block 2104 can be driven to move in the vertical direction along the lifting screw 122, so as to drive the beam assembly 20 to move in the vertical direction. The movable block 2104 and the clamp 2108 are located on opposite sides of the support body 2102, respectively.

The slider 2106 is fixedly mounted to the support body 2102 and is located on the same side of the support body 2102 as the movable block 2104. Each vertical rod 1200 is correspondingly provided with at least one sliding block 2106, and each sliding block 2106 is movably arranged on the corresponding vertical rod 1200 and can slide along the corresponding vertical rod 1200. In this embodiment, two sliding blocks 2106 are correspondingly installed on each vertical rod 1200. It is understood that in some other embodiments, the number of the sliding blocks 2106 correspondingly installed on each of the vertical rods 1200 may be increased or decreased, for example, decreased to 1, or increased to 3, according to actual requirements.

The two guide rails 212 are respectively and correspondingly installed on the two clamping portions 2108, and are arranged along the horizontal direction and spaced by a preset distance. Horizontal scales 2120 extending towards the two sides respectively with the center of the guide rail 212 as a zero point are arranged on the two sides of the guide rail 212, that is, the scale values of the horizontal scales 2120 gradually increase towards the two sides of the guide rail 212 respectively with the center of the guide rail 212 as a zero point, so as to facilitate the position location of the sliding part 30. The central axis O2 of the guide rail 212 and the central axis O1 of the bracket body 110 are located on the same plane. It will be appreciated that in some other embodiments, the number of guide rails 212 may be increased or decreased according to actual needs, for example, decreased to 1 or increased to 3; the rail 212 may also be fixedly mounted to the support member 210 by any other suitable means, for example, the clamp 2108 is omitted and the rail 212 is welded directly to the support body 2102.

The level 214 is installed above one of the clamping portions 2108, and detects whether the clamping portion 2108 is horizontally disposed, thereby determining whether the guide rail 212 is horizontally disposed. It will be appreciated that in some other embodiments, the level 214 may be mounted to the rail 212, or to other portions of the beam assembly 20, as long as it is sufficient to detect whether the rail 212 is horizontally disposed.

The slider 30 is movably mounted to the guide rail 212, and is movable in a horizontal direction along the guide rail 212. In this embodiment, the slider 30 is movably mounted to the rail 212 by a sliding bearing 302. The slider 30 includes mounting points for mounting the radar index piece 400. It will be appreciated that in some other embodiments, the slider 30 may be movably mounted to the rail 212 in other suitable manners, e.g., the slider bearing 302 is omitted and the slider 30 may be directly movably mounted to the rail 212.

Referring to fig. 5 and 6 together, the laser 200 is a hub laser that includes a transmitting portion 202, a mounting shaft 204, and a viewing target 206. The emitting portion 202 is used for emitting a laser beam, and the emitting portion 202 includes a switch 2022 for turning on or off the emitting portion 202. The mounting shaft 204 is mounted to the emitting portion 202 for mounting the hub laser 200 to a hub of an automobile. The observation target 206 is attached to the emission portion 202. The observation target 206 is a rectangular flat plate including an observation target surface 2060 for displaying the position of the laser light reflected back through the radar scale 400. An emitting hole 2062 is provided in the middle of the observation target surface 2060 for allowing the laser beam to be emitted.

Referring to fig. 7 and 8, the diaphragm 300 includes a fixed base 310 and a sliding diaphragm 320.

The fixing base 310 includes a base 312, a fixing bracket 314, and a locking handle 316. The base 312 is a rectangular flat plate, one end of the fixing bracket 314 is installed in the middle of the base 312, and the fixing bracket 314 is perpendicular to the base 312. The fixing bracket 314 is strip-shaped. The locking handle 316 is mounted to the fixed bracket 314.

The slide diaphragm 320 includes a diaphragm portion 322 and a slide groove portion 324. The diaphragm portion 322 has a substantially flat plate shape, and is provided with stripe-shaped diaphragm grooves 3222 for allowing the laser beam to pass therethrough. The width of the diaphragm groove 3222 is slightly smaller than the diameter of the laser spot emitted by the laser 200, so as to detect whether the laser beam just passes through the diaphragm groove 3222. The sliding groove 324 is mounted on the stop portion 322, and is strip-shaped and sleeved on the fixing bracket 314. The sliding groove portion 324 may slide with respect to the fixing bracket 314. The sliding slot portion 324 is provided with a strip-shaped slot 3240, and the locking handle 316 penetrates through the slot 3240 for stably fixing the sliding diaphragm 320 on the fixed seat 310.

Referring to fig. 9, the radar marker 400 is in a rectangular plate shape and includes a base plate 401, a mounting bracket 402, a fixed rotating shaft 403, a handle 404, an adjusting bracket 405, an angle adjusting assembly 406, an adjusting rod 407, and a handle 408.

Referring to fig. 10, the substrate 401 is a rectangular flat plate, and includes a substrate body 4010 and a reflective layer 4012. The substrate body 4010 may be made of a light-weight material, for example, a plastic material, a light-weight metal material such as an aluminum alloy or a magnesium alloy. The reflecting layer 4012 is disposed on a surface of the substrate body 4010, and is configured to reflect a laser beam emitted by the laser 200 and also to reflect a radar wave emitted by the vehicle-mounted radar. The reflecting layer 4012 is a silver layer, and is coated on the surface of the substrate body 4010 to reflect both laser beams and radar waves.

It is understood that in some other embodiments, the reflecting layer 4012 may be made of other materials, and the substrate body 4010 may be made of materials capable of reflecting radar waves, or the substrate 401 includes both a light reflecting layer and a radar wave reflecting layer, and the radar reflecting layer is disposed between the light reflecting layer and the substrate body 4010, that is, the substrate 401 can be used for reflecting light beams and radar waves at the same time. The shape of the substrate 401 is not limited to a rectangle, and may be changed according to actual needs, for example, the substrate 401 may be a circle.

Referring to fig. 11 and 12, the mounting bracket 402 is plate-shaped and is fixedly mounted on the substrate body 4010, and the mounting bracket 402 and the reflecting layer 4012 are respectively disposed on two opposite sides of the substrate body 4010. The number of the mounting brackets 402 is two, and the two mounting brackets 402 are spaced by a preset distance and are both arranged along a vertical direction (that is, the mounting brackets 402 are arranged in parallel to each other). Each of the mounting brackets 402 includes a first mounting protrusion 4022 and a second mounting protrusion 4024, the first mounting protrusion 4022 is located below the second mounting protrusion 4024, two first mounting protrusions 4022 of two of the mounting brackets 402 are located on the same horizontal line, and two second mounting protrusions 4024 of two of the mounting brackets 402 are located on the other horizontal line. Each second mounting protrusion 4024 is provided with a convex column 4026, each convex column 4026 is cylindrical, and the two convex columns 4026 are arranged along the same straight line and oppositely. The first mounting protrusion 4022 is provided with a mounting hole for mounting the fixed rotating shaft 403.

It will be appreciated that in some other implementations, the number of mounting brackets 402 is not limited to two and may be increased or decreased depending on the actual requirements.

The fixed rotating shaft 403 passes through two mounting holes of the two first mounting protrusions 4022, respectively, and the fixed rotating shaft 403 is arranged along the horizontal direction.

The handle 404 is mounted on the substrate body 4010 and located on the same side of the substrate body 4010 as the mounting bracket 402. The handle 404 is used to facilitate movement of the radar index piece 400.

The adjustment bracket 405 is detachably mounted to the slider 30. The adjustable bracket 405 includes a bracket body 4050, a first mounting ear 4052 and a second mounting ear 4054, the bracket body 4050 is a frame structure, including a hollow-out area, for weight reduction. The two first mounting ears 4052 and the two second mounting ears 4054 are both mounted on the same side of the bracket body 4050, the two first mounting ears 4052 are located on the same horizontal line, and the two second mounting ears 4054 are located on the other horizontal line. The first mounting ear 4052 and the second mounting ear 4054 are both provided with mounting holes, and both ends of the fixed rotating shaft 403 are respectively hinged to the two mounting holes of the two first mounting ears 4052, so that the base plate 401 can rotate around the fixed rotating shaft 403 relative to the adjusting bracket 405.

The angle adjustment assembly 406 includes a cam plate 410, a cam spring 412, a first clasp 414, a second clasp 416, and a pin 418.

Referring to fig. 13 and 14, the cam plate 410 is a disk shape, and a cam groove 4100 is formed on one surface of the cam plate, and the cam groove 4100 includes three circular arcs with different curvatures, and the three circular arcs are sequentially connected in the order of curvature from large to small. A bottom wall of the cam groove 4100 is provided with a first positioning hole 4102, a second positioning hole 4104, and a third positioning hole 4106. The first positioning hole 4102 is located between the second positioning hole 4104 and the third positioning hole 4106, and the first positioning hole 4102 is spaced from the second positioning hole 4104 and the third positioning hole 4106 by a predetermined distance. The central portion of the cam plate 410 is provided with a central through hole 4108.

The shape and size of the cam spring 412 are the same as those of the cam groove 4100, and the cam spring 412 also includes three sections of circular arcs with different curvatures, and the three sections of circular arcs are sequentially connected in order of curvature from large to small. The cam spring 412 includes three through holes 4120, the cam spring 412 is received in the cam groove 4100 and fixed in the cam groove 4100 by screws, and each of the first positioning hole 4102, the second positioning hole 4104 and the third positioning hole 4106 is aligned with a corresponding one of the through holes 4120. The cam spring 412 may be made of a metal material such as copper, aluminum, etc., or may be made of an elastic plastic material.

The first clasping member 414 is fixedly mounted on a surface of the cam plate 410, and the first clasping member 416 and the cam spring 412 are respectively located on two opposite sides of the cam plate 410.

The second clasp 416 and the first clasp 414 form a disk that is coaxial with the cam plate 410.

The number of the pins 418 is two, and one end of each pin 418 penetrates the first clasping member 414 in the radial direction of the disk and is fixed to the second clasping member 416. The one end of pin 418 has the pin head, and the other end has the external screw thread portion, the pin head supports and leans on first clasping member 414, the external screw thread portion with second clasping member 416 screw-thread fit, through pin 418 will first clasping member 414 with second clasping member 416 locks the constitution the disc.

The number of the angle adjusting assemblies 406 is two, each angle adjusting assembly 406 is mounted on a corresponding convex pillar 4026, and one end of each convex pillar 4026 is inserted into a corresponding cam slot 4100 and can slide along the corresponding cam slot 4100. When the protruding columns 4026 slide in the corresponding cam grooves 4100, the protruding columns 4026 and the cam spring 412 slide and rub, and can be inserted into the first positioning holes 4102, the second positioning holes 4104 and the third positioning holes 4106 to position the angle adjusting assembly 406. The adjustment gears of the radar scaling member 400 are the same as the positioning holes in number, and in this embodiment, the adjustment gears of the radar scaling member 400 are three.

In this embodiment, the number of the mounting bracket 402 and the angle adjustment assembly 406 is two, and the adjustment bracket 405 includes two first mounting ears 4052 and two second mounting ears 4054, mainly for improving the stability of the radar standard 400 and the reliability in adjusting the angle, it is understood that in some other embodiments, the number of the mounting bracket 402, the angle adjustment assembly 406, the first mounting ears 4052 and the second mounting ears 4054 may be changed according to actual requirements, and is only at least one, for example, the number of the angle adjustment assembly 406 is one, and the number of the second mounting protrusions 4024, the second mounting ears 4054 and the protruding columns 4026 is one.

The adjustment rod 407 is horizontally disposed and passes through the middle of each angle adjustment assembly 406, i.e. the adjustment rod 407 passes through the central through hole 4108 of the cam plate 410 and also passes through the center of the circular disc formed by the first clasping member 414 and the second clasping member 416. The first clasping member 414 is fixedly arranged on the cam plate 410, the first clasping member 414 and the second clasping member 416 are locked by the pin 418, so that the first clasping member 414 and the second clasping member 416 jointly clasp the adjusting rod 407, and the angle adjusting assembly 406 is fixedly arranged on the adjusting rod 407 and can rotate together with the adjusting rod 407. The adjusting rod 407 also passes through the mounting holes of the two second mounting ears 4054 and is rotatably connected with the second mounting ears 4054. When the adjusting rod 407 rotates, the angle adjusting assembly 406 is driven to rotate together, and the protruding post 4026 slides in the cam slot 4100 and rubs against the cam shrapnel 412. Since the cam groove 4100 includes three circular arcs with different curvatures, when the protruding column 4026 slides in the cam groove 4100, the cam disc 410 pushes the substrate 401 to rotate around the fixed rotating shaft 403, so that the cam disc 410 approaches or leaves the adjusting bracket 405. When the convex columns 4026 are inserted into the first positioning holes 4102, the substrate 401 stays at a first position, and the substrate 401 is vertically arranged; when the protruding columns 4026 are inserted into the second positioning holes 4104, the substrate 401 stays at a second position, the upper end of the substrate 401 is close to the adjusting bracket 405, and the included angle of the substrate 401 with respect to the vertical direction is 2 degrees; when the protruding column 4026 is inserted into the third positioning hole 4106, the substrate 401 stays at the third position, the upper end of the substrate 401 is far away from the adjusting bracket 405, and the included angle of the substrate 401 with respect to the vertical direction is 2 degrees.

The cam disc 410 is provided with the cam groove 4100, and the convex column 4026 can slide in the cam groove 4100, so as to push the substrate 401 to smoothly rotate around the fixed rotating shaft 403, thereby adjusting the angle of the substrate 401.

In addition, a cam spring 412 is installed in the cam groove 4100, and the boss 4026 slides in the cam groove 4100 and rubs with the cam spring 412 in a sliding manner, so that the boss 4026 can stably and smoothly move in the cam groove 4100, and the stability of the rotation of the substrate 401 around the fixed rotating shaft 403 can be improved.

Further, the bottom wall of the cam groove 4100 is provided with the first positioning hole 4102, the second positioning hole 4104 and the third positioning hole 4106, so that the substrate 401 can be conveniently positioned at a predetermined rotation angle.

At the same time, the fixed mounting of the angle adjustment assembly 406 to the adjustment lever 407 is facilitated by the first clasp 414, the second clasp 416, and the pin 418.

The two handles 408 are respectively and fixedly installed at two ends of the adjusting rod 407, and are used for facilitating the rotation of the adjusting rod 407.

When the radar scaling member 400 is assembled, the handle 404 is fixedly mounted on the substrate 401, the two mounting brackets 402 are arranged in parallel at a preset distance, and the mounting brackets 402 and the handle 402 are located on the same side of the substrate 401. The fixed rotating shaft 403 passes through two mounting holes of the two first mounting protrusions 4022, and the fixed rotating shaft 403 is fixedly mounted on the first mounting protrusions 4022.

The two first mounting ears 4052 are sleeved at two ends of the fixed rotating shaft 403, and the two first mounting ears 4052 are movably connected with the fixed rotating shaft 403.

The adjustment rod 407 is inserted through the mounting hole of one of the second mounting ears 4054, the two central through holes 4108 of the two cam plates 410, and the other of the second mounting ears 4054 in this order. The cam disc 410 is sleeved on the boss 4024, so that the boss 4024 is accommodated in the cam groove 4100 and abuts against the cam spring 412. The second clasping member 416 is locked to the first clasping member 414 through the pin 418, and the first clasping member 414 and the second clasping member 416 jointly clasp the adjusting rod 407, so that the angle adjusting member 406 is fixedly installed on the adjusting rod 407.

In this embodiment, the cam groove 4100 includes three circular arcs with different curvatures, it is understood that in some other implementations, the number of the circular arcs with different curvatures may vary according to actual requirements, as long as there are at least three circular arcs with different curvatures, and the at least three circular arcs with different curvatures are sequentially connected in order of the curvatures from large to small.

In the present embodiment, the bottom wall of the cam groove 4100 is provided with three positioning holes: first positioning hole 4102, second positioning hole 4104 and third positioning hole 4106, it is understood that in some other embodiments, the number of positioning holes can be increased according to actual requirements, as long as at least the first positioning hole 4102, second positioning hole 4104 and third positioning hole 4106 are included.

It is understood that in some other embodiments, the cam spring 412 may be omitted and the boss 4026 slidingly rubs against the bottom wall of the cam slot 4100. The first clasp 414, the second clasp 416, and the pin 418 may be omitted, and the adjustment lever 407 may be fixedly coupled to both cam plates 410.

Referring to fig. 15, in the first step of calibrating the vehicle-mounted radar, the vehicle 600 is horizontally disposed (i.e. the vehicle 600 is parked on a horizontal plane), and the carriage assembly 100 is moved to the front of the vehicle 600 to be calibrated by the roller 112, wherein the distance is about 1 meter, so that the guide rail 212 is substantially parallel to the axle of the vehicle 600. The level 214 is observed and the height adjustment member 114 is adjusted to horizontally set the guide rail 212. The radar scaling member 400 is mounted to the sliding member 30, and the radar scaling member 400 and the sliding member 30 are moved along the guide rail 212 to one side of the car 600 to be scaled. The substrate 401 is in the first position, i.e. the substrate 401 is vertically arranged. A wheel hub clip is mounted on a rear wheel of the automobile 600, the laser 200 is mounted, and the laser 200 is turned on, so that a laser beam emitted from the laser 200 is irradiated on the reflecting layer 4012 of the radar standard 400. The diaphragm 300 is taken, and the diaphragm 300 is placed between the laser 200 and the radar index piece 400 such that the diaphragm portion 322 is perpendicular to the laser beam. The diaphragm groove 3222 is adjusted to conform to the height of the emission aperture 2302 of the laser 200. Adjusting the emitting angle of the laser 200, and appropriately moving the position of the diaphragm 300, so that the laser 200 emits a laser beam in the horizontal direction, and the laser beam emitted by the laser 200 is parallel to the central axial plane of the automobile 600 to be calibrated, and passes through the diaphragm groove 3222. According to the actual situation, the position of the radar scaling member 400 is adjusted by sliding the sliding member 30 and/or adjusting the height of the guide rail 212, so that the laser beam can be irradiated onto the radar scaling member 400. Observing the position of the reflected laser point, moving the support device 100 and adjusting the height adjusting member 114, so that the laser beam reflected by the reflecting layer 4012 can just return along the original path and project to the emitting hole 2302 of the laser 200. At this time, the calibration of the vertical plane of the radar calibration piece 400 is completed, the guide rail 212 is perpendicular to the central axis plane of the automobile 600, and the substrate 401 is vertically arranged and also perpendicular to the central axis plane of the automobile 600.

In this embodiment, when the vehicle 600 is horizontally disposed, the central axis plane of the vehicle 600 is vertically disposed, and the vehicle 600 is symmetrical with respect to the central axis plane.

Referring to fig. 12, 13 and 16 to 18 together, in a second step of calibrating the vehicle radar, the vehicle radar is mounted to the automobile 600. The ADAS diagnostic analyzer is connected to a communication interface of an On-board diagnostic (OBD) system of the vehicle, and the radar index piece 400 is moved to the middle of the vehicle radar along the guide rail 212, so as to ensure that the center of the radar index piece 400 is kept in a straight line with the center of the vehicle radar. And starting the vehicle-mounted radar, and transmitting radar waves to the radar standard piece 400, wherein the radar waves can be laser radars or millimeter-wave radars. Referring to fig. 16, the adjusting lever 407 is rotated by the handle 408, the substrate 401 rotates around the fixed rotating shaft 403, so that the protruding column 4026 is inserted into the second positioning hole 4104, the upper end of the substrate 401 is far away from the automobile 600, and an included angle between the substrate 401 and the vertical direction is 2 degrees. Observed by the automobile ADAS diagnostic analyzer. Referring to fig. 17, the adjusting lever 407 is rotated by the handle 408, the base plate 401 rotates around the fixed rotating shaft 403, so that the convex column 4026 is inserted into the first positioning hole 4102, the base plate 401 is vertically disposed, the reflecting layer 4012 reflects the radar wave to the middle of the vehicle-mounted radar, and the ADAS diagnostic analyzer of the vehicle is observed. Referring to fig. 18, the adjusting lever 407 is rotated by the handle 408, the substrate 401 rotates around the fixed rotating shaft 403, the upper end of the substrate 401 is close to the automobile 600 (i.e. the upper end of the substrate 401 is far away from the bracket device 100), so that the convex column 4026 is inserted into the third positioning hole 4106, an included angle between the substrate 401 and the vertical direction is 2 degrees, and the automobile ADAS diagnostic analyzer is observed. After the three operations are completed, obtaining the installation position deviation and the dB value deviation of the current vehicle-mounted radar through an automobile ADAS diagnostic analyzer, and adjusting a vertical adjusting bolt of the vehicle-mounted radar according to the operation guide of the automobile ADAS diagnostic analyzer to enable the deviation value of the radar waves reflected to the vehicle-mounted radar to be within an allowable range. And finishing the calibration work of the vehicle-mounted radar.

It is understood that in some other embodiments, the vertical plane of the substrate 401 may be calibrated by using a vertical plane calibration device in the prior art, so that the substrate 401 is perpendicular to the central axis of the vehicle 600, then the radar calibration piece 400 is used to reflect the radar waves emitted by the vehicle-mounted radar to the vehicle-mounted radar, the vehicle ADAS diagnostic analyzer is used to obtain the installation position deviation and the dB value deviation of the current vehicle-mounted radar, and the vertical adjustment bolt of the vehicle-mounted radar is adjusted so that the deviation value of the radar waves reflected to the vehicle-mounted radar is within the allowable range, that is, the calibration of the vehicle-mounted radar is completed. In addition, the included angle is not limited to 2 degrees, as long as the included angle is smaller than the allowable angle deviation value of the vehicle-mounted radar. It should be understood by those skilled in the art that if the radar calibration piece 400 is calibrated in a vertical plane by using the vertical plane calibration apparatus in the prior art, the radar calibration piece 400 does not need to reflect light beams, and the radar calibration piece 400 can only reflect radar waves, that is, the radar calibration piece 400 can only include the substrate 401 and the radar wave reflecting layer, or the substrate 401 can be made of a material that reflects radar waves and does not need to include a radar wave reflecting layer.

In this embodiment, after the vertical surface of the substrate 401 is calibrated, the radar calibration piece 400 is used to reflect the radar waves emitted by the vehicle-mounted radar to the vehicle-mounted radar, so that the vehicle-mounted radars of different vehicle types can be calibrated, and the calibration work of the vehicle-mounted radar is facilitated.

In addition, the mounting position deviation and the dB value deviation of the vehicle-mounted radar can be recorded in three states that the substrate 401 is vertically arranged and the substrate and the vertical direction form a positive included angle and a negative included angle, and the mounting position deviation and the dB value deviation of the vehicle-mounted radar can be accurately calibrated.

Moreover, the vertical plane calibration of the substrate 401 can be realized by using the radar calibration piece 400, the diaphragm 300 and the laser 200, and the radar calibration piece 400 can be used for both vertical plane calibration and vehicle-mounted radar calibration, so that the number of components of the vehicle-mounted radar calibration equipment 500 is reduced, the cost is reduced, and the calibration operation is simplified.

Meanwhile, the radar calibration piece 400 can horizontally slide along the guide rail 212, when a plurality of vehicle-mounted radars exist in one automobile, after calibration of one vehicle-mounted radar is completed, the radar calibration piece 400 can slide to the front of the other vehicle-mounted radar to perform calibration operation on the other vehicle-mounted radar, horizontal calibration of the guide rail 212 is not needed, and calibration of the plurality of vehicle-mounted radars of one automobile can be conveniently performed.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A radar index (400) comprising:

the base plate (401) is used for reflecting radar waves emitted by a vehicle-mounted radar of an automobile to be calibrated to the vehicle-mounted radar after the vertical surface of the base plate is calibrated so as to calibrate the vehicle-mounted radar;

the base plate (401) is hinged with the fixed rotating shaft (403), and the base plate (401) can rotate around the central axis of the fixed rotating shaft (403) and can stay at least at a first position, a second position and a third position;

the mounting bracket (402) is mounted on the base plate (401), and the mounting bracket (402) is hinged to the adjusting bracket (405) through the fixed rotating shaft (403);

an adjusting rod (407), the adjusting bracket (405) being hinged to the adjusting rod (407);

the angle adjusting assembly (406), the angle adjusting assembly (406) comprises a cam disc (410), the cam disc (410) is sleeved on the adjusting rod (407), and the cam disc (410) is used for pushing the base plate (401) to rotate around the fixed rotating shaft (403);

when the substrate (401) stays at the first position, the substrate (401) is vertically arranged;

when the substrate (401) stays at the second position, an included angle is formed between the substrate (401) and the vertical direction;

when the substrate (401) stays at the third position, the substrate (401) forms the included angle with the vertical direction;

wherein the substrate (401) in the second position and the substrate (401) in the third position are symmetrical with respect to the substrate (401) in the first position;

the included angle is smaller than the allowable angle deviation value of the vehicle-mounted radar;

the cam disc (410) is provided with a cam groove (4100), the bottom wall of the cam groove (4100) is at least provided with a first positioning hole (4102), a second positioning hole (4104) and a third positioning hole (4106), and the cam disc (410) is sleeved on the adjusting rod (407);

the mounting bracket (402) is provided with a convex column (4026), the convex column (4026) is accommodated in the cam groove (4100), and the convex column (4026) can slide in the cam groove (4100) and can be inserted into the first positioning hole (4102), the second positioning hole (4104) or the third positioning hole (4106);

when the convex column (4026) is inserted into the first positioning hole (4102), the substrate (401) stays at the first position; when the convex column (4026) is inserted into the second positioning hole (4104), the substrate (401) stays at the second position; when the convex column (4026) is inserted into the third positioning hole (4106), the substrate (401) stays at the third position.

2. The radar scale (400) of claim 1, wherein the cam slot (4100) comprises at least three arcs of different curvature, the arcs of different curvature being sequentially connected in order of curvature from larger to smaller.

3. The radar sensing member (400) of claim 1, wherein the angle adjustment assembly (406) further comprises a cam blade (412), the cam blade (412) being fixedly mounted within the cam slot (4100), the cam blade (412) comprising at least three through holes (4120), each of the first positioning hole (4102), the second positioning hole (4104) and the third positioning hole (4106) being aligned with a respective one of the through holes (4120);

the convex column (4026) abuts against the cam spring piece (412), and when the convex column (4026) slides in the cam groove (4100), the convex column (4026) and the cam spring piece (412) are in sliding friction.

4. The radar index (400) according to any of claims 1 to 3, wherein the angle adjustment assembly (406) further comprises a first clasp (414), a second clasp (416), and a pin (418);

said first clasp (414) is fixedly mounted to said cam plate (410);

the first clasping member (414) and the second clasping member (416) clasp the adjusting rod (407) therebetween;

one end of the pin (418) penetrates through the first clasping member (414), is fixed on the second clasping member (416), and locks the first clasping member (414) on the second clasping member (416), so that the adjusting rod (407) is clamped between the first clasping member (414) and the second clasping member (416), and the angle adjusting assembly (406) can rotate together with the adjusting rod (407).

5. Radar scale (400) according to any one of claims 1 to 3,

the mounting bracket (402) comprises at least one first mounting protrusion (4022) and at least one second mounting protrusion (4024);

the adjustment bracket (405) comprises at least one first mounting ear (4052) and at least one second mounting ear (4054);

the at least one first mounting protrusion (4022) and the at least one first mounting lug (4052) are respectively sleeved on the fixed rotating shaft (403), so that the mounting bracket (402) is hinged to the adjusting bracket (405) through the fixed rotating shaft (403);

the number of the angle adjusting components (406) is at least one;

each second mounting protrusion (4024) is provided with one convex column (4026), and the convex column (4026) of each second mounting protrusion (4024) is accommodated in the corresponding cam groove (4100) of one cam disc (410);

the adjustment rod (407) passes through the at least one second mounting ear (4054) and the cam disk (410) of the at least one angle adjustment assembly (406).

6. The radar marker (400) according to any one of claims 1 to 3, wherein the number of said mounting brackets (402) is two, two of said mounting brackets (402) are spaced apart by a predetermined distance and arranged in parallel to each other, each of said mounting brackets (402) comprises a first mounting protrusion (4022) and a second mounting protrusion (4024);

the adjustment bracket (405) comprises two first mounting ears (4052) and two second mounting ears (4054);

the two first mounting protrusions (4022) and the two first mounting lugs (4052) are respectively sleeved on the fixed rotating shaft (403), so that the mounting bracket (402) is hinged to the adjusting bracket (405) through the fixed rotating shaft (403);

the adjusting rod (407) sequentially penetrates through one second mounting lug (4054), the two cam disks (410) and the other second mounting lug (4054);

each second mounting protrusion (4024) is provided with one convex column (4026).

7. The radar scale (400) of claim 6, wherein the two posts (4026) of the two second mounting protrusions (4024) are disposed opposite along a same line.

8. A vehicle radar calibration device (500) comprising a radar calibration object (400) according to any of claims 1 to 7.