Portable measuring system and method for field of view in front of automobile
The portable measurement system solves the problem of driver forward visibility performance testing during the automotive R&D stage, achieving efficient and economical testing, applicable to various vehicle models, reducing equipment costs and meeting the confidentiality requirements of design parameters.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-03-24
AI Technical Summary
Existing technologies cannot efficiently and economically test the driver's forward visibility performance during the automotive R&D phase. Furthermore, existing equipment is expensive, complex to operate, and difficult to deploy flexibly within enterprises, thus failing to meet the real-time testing needs during the design phase.
A portable measurement system for automotive forward visibility is provided, comprising a mounting plate, a support mechanism, a three-axis adjustment mechanism, and a measurement mechanism. It supports both hard and soft support mounting methods. The measurement coordinate system is created through the three-axis adjustment mechanism in conjunction with the scanning module and the measurement module, eliminating the dependence on a three-coordinate platform and a three-dimensional H-point device.
It reduces equipment investment costs, meets enterprises' need for confidentiality of design parameters, improves testing efficiency and economic benefits, is suitable for rapid preliminary testing and regulatory testing in the R&D stage, and is compatible with the testing needs of various vehicle models.
Smart Images
Figure CN121720745A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automotive technology, specifically to a portable measurement system and method for measuring forward visibility in automobiles. Background Technology
[0002] As national standards organizations advance their work, automakers are gaining a deeper understanding of vehicle safety and performance standards. During the R&D process, manufacturers need to conduct performance testing on non-mass-produced vehicle samples made according to design drawings, both during the design phase and after prototype manufacturing. This allows them to optimize design parameters in a timely manner, avoiding rework, redesign, and repeated sampling due to failed inspections, thereby reducing time and cost losses in export certification and other related processes.
[0003] However, there are many dynamic variables between the design drawings and the actual vehicle prototype, including manufacturing tolerances, regional differences in export standards, component replacements or design adjustments caused by changes in customer or market demands, and vehicle exterior beautification and decoration. These factors can all lead to deviations between the actual vehicle performance and design expectations. In this context, simulation software, unable to accurately reflect the physical characteristics of the real prototype, struggles to provide reliable testing data; while real vehicle testing, as the only verification method that can reflect the actual situation, is constrained by the existing technological system.
[0004] Currently, regulatory testing of a vehicle's forward visibility performance is primarily conducted by third-party testing centers. During the testing process, these centers are equipped with 3D coordinate measuring machines and 3D H-point devices. They create a measurement coordinate system by placing a prototype vehicle in three-dimensional space and simulating real-world usage scenarios using the 3D H-point device, and then verify the consistency between this coordinate system and the design coordinate system. Subsequent performance indicator testing only proceeds after the consistency verification is successful.
[0005] However, this testing model is only suitable for compliance verification of finalized products and cannot meet the real-time testing needs of manufacturers during the R&D phase. Furthermore, existing professional measurement equipment is expensive, complex to operate, and dependent on fixed testing environments, making it difficult to deploy flexibly within enterprise R&D scenarios. In addition, manufacturers lack cost-effective portable testing methods during the design phase. Relying on simulation software for prediction results in a severe imbalance between high costs and low accuracy (it cannot cover the dynamic variables of real vehicles), further exacerbating uncertainty and resource waste in the R&D process. Summary of the Invention
[0006] This application provides a portable measurement system and method for automotive forward visibility, which not only meets the enterprise's need for confidentiality of automotive design parameters, but also reduces investment costs.
[0007] In a first aspect, embodiments of this application provide a portable measurement system for forward visibility of a vehicle, the portable measurement system for forward visibility of a vehicle comprising: A fixed disk with a rotating disk on it, and the fixed disk is also provided with a calibration point for positioning; A support mechanism is provided on the fixed plate and the height of the fixed plate can be adjusted; A three-axis adjustment mechanism is mounted on the rotary disk; The measuring mechanism includes a scanning module and a measuring module, which are optionally fixed to the triaxial adjustment mechanism.
[0008] In conjunction with the first aspect, in one embodiment, the support mechanism includes: At least three first support columns are provided at the bottom of the fixed plate; Adjusting arms, the number of which corresponds to the number of the first support columns, and the adjusting arms are connected to the first support columns; The number of second support columns corresponds to that of the first support columns. The second support columns are connected to the adjusting arm and can slide along the adjusting arm. The outrigger is connected to the second support column and can extend and retract relative to the second support column.
[0009] In conjunction with the first aspect, in one embodiment, the support mechanism includes: At least three adjusting rods, one end of each adjusting rod being connected to the bottom end of the fixed plate; The number of airbags corresponds to the number of the adjusting rod, and is connected to the other end of the adjusting rod; An air compressor station is connected to all of the airbags and can independently adjust the air intake of each airbag.
[0010] In conjunction with the first aspect, in one embodiment, the measurement module includes at least one of a V-point device and a binocular obstacle angle measurement device; The V-point device can rotate in the Z-reference plane, and the V-point device is provided with a first reference point for positioning the V-point, and a first laser emitter with a light-emitting point set based on the V-point and rotatable around the light-emitting point; The binocular obstacle angle measuring device is provided with a second reference point for locating point P, and can rotate in the Z reference plane based on the second reference point. The binocular obstacle angle measuring device also includes two second laser emitters whose light emission points are set based on the mounting point and can rotate around the light emission point. The positional relationship between the second reference point and the mounting point is set based on the positional relationship between point P and point E.
[0011] In conjunction with the first aspect, in one embodiment, the V-point device includes: A fixed frame is rotatably fixed to the three-axis adjustment mechanism, and the fixed frame is provided with a first reference point for positioning point V. Two first laser emitters, one end of each first laser emitter being rotatably fixed to the fixed frame, and the distance between the light emission points of the two first laser emitters being the distance between points V1 and V2.
[0012] In conjunction with the first aspect, in one embodiment, the V-point device further includes: Two lifting clamping devices are mounted on the fixed frame; Two fixing clamps are provided, each of which is rotatably connected to the fixing frame via a first pin, and the straight line of the first pin passes through the light-emitting point of the first laser emitter. One end of each of the first laser emitters is fixed inside the fixed clamp, and the other end passes through the lifting clamping device.
[0013] In conjunction with the first aspect, in one embodiment, the binocular obstacle angle measuring device includes: The base has a reference hole as a second reference point and two mounting holes as mounting points. The reference hole corresponds to point P, and the two mounting holes correspond to two positions of point E. One end of each of the second laser emitters is rotatably connected to the mounting hole, and the rotation axis of the second laser emitter passes through the light-emitting point of the second laser emitter.
[0014] In conjunction with the first aspect, in one embodiment, the binocular obstacle angle measuring device includes: Two fixing sleeves, each fixing sleeve having a mounting post, the mounting post being installed in the mounting hole, and the axis of the mounting post passing through the light-emitting point of the second laser emitter; The upper cover plate is fixed to the base, and the upper cover plate is provided with two arc-shaped holes at intervals; Two angle adjustment sleeves, each of which is provided with an adjustment rod, one end of which extends out of the arc-shaped hole and is provided with a tightening cap; One end of each of the second laser emitters is fixed inside the fixing sleeve, and the other end is fixed inside the angle adjustment sleeve.
[0015] In conjunction with the first aspect, in one embodiment, the binocular obstacle angle measuring device further includes: A measuring platform, fixed to the three-axis adjustment mechanism, is provided with: The first measuring hole corresponding to point P1 is used to measure the driver-side binocular obstruction angle relative to point P1; The second measuring aperture corresponding to point P2 is used to measure the passenger-side binocular obstruction angle relative to point P2; The third measuring hole corresponding to point P3 is used to measure the binocular obstruction angle relative to the center pillar of the front window at point P3; The measuring platform can be aligned with the reference hole on the base based on the first measuring hole, the second measuring hole, or the third measuring hole for fixation.
[0016] Secondly, embodiments of this application provide a portable method for measuring the forward field of vision of a vehicle, the portable method for measuring the forward field of vision of a vehicle includes: The scanning module is fixed on the three-axis adjustment mechanism. By adjusting the three-axis adjustment mechanism, the scanning module is used to scan target points inside the target vehicle. By comparing the scanned digital model with the digital model designed for the target vehicle, the calibration point on the fixed plate is located at the R point of the target vehicle by moving the fixed plate and / or adjusting the support mechanism. Remove the scanning module, install the measurement module on the three-axis adjustment mechanism, and adjust the three-axis adjustment mechanism until the measurement module is in place for measurement.
[0017] The beneficial effects of the technical solutions provided in this application include: The portable vehicle forward visibility measurement system of this application includes a fixed plate 1, a support mechanism 2, a three-axis adjustment mechanism 3, and a measuring mechanism. The fixed plate 1 has a rotating disk 11 and also has calibration points for positioning. The support mechanism 2 is mounted on the fixed plate 1 and its height is adjustable. The three-axis adjustment mechanism 3 is mounted on the rotating disk 11. The measuring mechanism includes a scanning module 4 and a measuring module, which are optionally fixed to the three-axis adjustment mechanism 3.
[0018] This application establishes a measurement coordinate system with the design R point as the origin by comparing the actual scanned digital model with the design digital model. This eliminates the reliance on a coordinate measuring machine (CMM) platform and a 3D H-point device, significantly reducing equipment investment costs and meeting the core requirement of enterprises to keep automotive design parameters confidential.
[0019] At the same time, it can be used as a design verification tool in the R&D stage (such as a quick assessment of the driver's forward vision), and can also be used in conjunction with a coordinate measuring machine and a three-dimensional H-point device for regulatory testing, or used alone as a measurement tool for finalized products.
[0020] In addition, it supports two installation methods: rigid support feet and soft airbag support, which can flexibly adapt to various vehicle models (including whole vehicle testing, body-in-white testing and bench testing). The installation process is simple and quick, effectively avoiding the time waste and cost increase caused by repeated rectification after the sample vehicle fails the inspection, and greatly improving the testing efficiency and economic benefits of the automotive R&D and certification process. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of a structural embodiment of the portable vehicle forward vision measurement system of this application, when it is rigidly supported by a support foot. Figure 2 An exploded view of the portable automotive forward visibility measurement system of this application when it is rigidly supported by a support foot. Figure 3 This is a schematic diagram of a structural embodiment of the portable vehicle forward vision measurement system of this application, which uses airbag soft support. Figure 4 This is a schematic diagram of the portable forward vision measurement system for automobiles, when placed inside the vehicle using airbag soft support; Figure 5 This is a schematic diagram of the scanning module of this application; Figure 6 This is a schematic diagram of the V-point device of this application; Figure 7 This is a schematic diagram of the binocular obstruction angle measuring device of this application; Figure 8 This is a schematic diagram of the installation of the scanning module when the supporting feet provide rigid support in this application; Figure 9 This is a schematic diagram of the installation of the V-point device when the supporting leg is rigidly supported in this application; Figure 10 This is a schematic diagram of the installation of the binocular obstruction angle measuring device when the supporting feet are rigidly supported in this application; Figure 11 This is a schematic diagram of the installation of the scanning module when the airbag soft support is used in this application; Figure 12 This is a schematic diagram of the installation of the V-point device when using airbag soft support in this application; Figure 13 This is a schematic diagram of the installation of the binocular obstruction angle measuring device when using airbag soft support in this application; Figure 14 This is a schematic diagram of a three-dimensional coordinate system; Figure 15 This is a schematic diagram showing the position of point V when the seat back angle is 25°. Figure 16 This is an exploded view of the V-point device of this application; Figure 17 This is a schematic diagram of the horizontal cross-section of the driver's side A-pillar in the national standard GB11562-2014. Figure 18 This is a schematic diagram of binocular obstacle angle projection measurement in the national standard GB11562-2014. Figure 19 A standard schematic diagram showing the relationship between points V, P, and E in the driver's forward field of vision and the measurement coordinate system; Figure 20 This is a schematic diagram showing the relative positions of points E and P; Figure 21 This is a schematic diagram of the structure of an embodiment of the binocular obstruction angle measuring device of this application; Figure 22 This is an exploded view of the binocular obstacle angle measuring device of this application from one perspective; Figure 23 This is an exploded view of the binocular obstacle angle measuring device of this application from another perspective; Figure 24 This is a schematic diagram of the angle adjustment at point E in the binocular obstruction angle measuring device of this application; Figure 25 This is a schematic diagram of each measuring hole on the measurement platform of this application; Figure 26 This is a flowchart of an embodiment of the portable measurement method for forward visibility of a vehicle according to this application.
[0023] In the diagram: 1. Fixed plate; 11. Rotary plate; 12. Level; 2. Support mechanism; 21. First support column; 22. Adjusting arm; 23. Second support column; 24. Outrigger; 25. Adjusting rod; 26. Airbag; 27. Air compressor station; 3. Three-axis adjustment mechanism; 31. X-direction adjusting block; 32. Y-direction adjusting block; 33. Column; 34. Connecting plate; 35. Sleeve; 36. Pin; 4. Scanning module; 5. V-point device; 51. First laser emitter; 52. Fixed frame; 53. Lifting and clamping device 54. Fixture; 55. First pin; 56. Rotary disk; 57. Adjusting bolt; 58. Connecting bracket; 6. Binocular obstruction angle measuring device; 61. Second laser emitter; 62. Base; 621. Reference hole; 622. Mounting hole; 63. Fixing sleeve; 64. Top cover plate; 641. Arc-shaped hole; 642. Cover plate bolt; 643. Shim; 65. Angle adjustment sleeve; 651. Tightening cap; 66. Measuring platform; 661. First measuring hole; 662. Second measuring hole; 663. Third measuring hole. Detailed Implementation
[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.
[0025] In a first aspect, embodiments of this application provide a portable measurement system for the forward field of vision of an automobile.
[0026] In one embodiment, reference is made to Figure 1 , Figure 1 This is a schematic diagram of the structure of an embodiment of the portable vehicle forward visibility measurement system of this application. Figure 1 As shown, the portable vehicle forward visibility measurement system includes a fixed plate 1, a support mechanism 2, a three-axis adjustment mechanism 3, and a measuring mechanism.
[0027] The fixed disk 1 is equipped with a rotating disk 11 and a calibration point for positioning; the support mechanism 2 is set on the fixed disk 1 and the height of the fixed disk 1 can be adjusted; the three-axis adjustment mechanism 3 is set on the rotating disk 11; the measuring mechanism includes a scanning module 4 and a measuring module, and the scanning module 4 and the measuring module can be optionally fixed on the three-axis adjustment mechanism 3.
[0028] It is worth noting that the support mechanism 2 can be installed in two ways: one is a rigid support with support feet, and the other is a soft support with airbags. The installation method can be selected according to the size of the vehicle interior space.
[0029] Specifically, see Figure 2 As shown, the rigid support leg is suitable for situations where there is a large space around the seat in the vehicle. In this case, the support mechanism 2 includes: At least three first support columns 21 are provided at the bottom of the fixed plate 1; adjusting arms 22 are provided, the number of which corresponds to the number of the first support columns 21, and the adjusting arms 22 are connected to the first support columns 21; second support columns 23 are provided, the number of which corresponds to the number of the first support columns 21, the second support columns 23 are connected to the adjusting arms 22, and can slide along the adjusting arms 22; and support legs 24 are provided, which are connected to the second support columns 23 and can extend and retract relative to the second support columns 23.
[0030] In this embodiment, the outriggers 24 and the second support column 23 are connected by a threaded connection, allowing for relative movement and height adjustment, thus suspending the portable measuring system on the seat. One end of the adjusting arm 22 is connected to the first support column 21, and the other end is connected to the second support column 23. The second support column 23 can move laterally along the adjusting arm 22, allowing for length adjustment. In this embodiment, the fixed plate 1 design does not require the three outriggers 24 to be installed in evenly distributed positions.
[0031] Preferably, a level 12 is also provided on the fixed plate 1. After installation, the height of the support leg 24 can be adjusted by observing the level 12 to keep the fixed plate 1 level.
[0032] Airbag-supported soft supports are suitable for situations where there is limited space around the seats in the vehicle, making it impossible to place support legs. See also Figure 3 and Figure 4 As shown, the support mechanism 2 includes: at least three adjusting rods 25, one end of each adjusting rod 25 being connected to the bottom end of the fixed plate 1; airbags 26, the number of which corresponds to the adjusting rods 25 and are connected to the other end of the adjusting rods 25; and an air compressor station 27, which is connected to all the airbags 26 and can independently adjust the air intake of each airbag 26.
[0033] In this embodiment, the airbag 26 is placed directly on the seat. One end of the adjusting rod 25 is fixed to three pre-drilled holes on the fixing plate 1; the other end is fixed to the airbag 26. The level 12 on the fixing plate 1 converts the angle signals in the XY directions into control signals to control and adjust the air intake volume in the airbag 26. The air intake volume is distributed to the three airbags 26 through the air compressor station 27, thereby keeping the fixing plate 1 horizontal and providing stable support.
[0034] See Figure 2 As shown, the three-axis adjustment mechanism 3 in this embodiment includes an X-direction adjustment block 31, a Y-direction adjustment block 32, and a column 33.
[0035] The X-direction adjustment block 31 is equipped with a first slider. On the one hand, the first slider can move on the X-direction adjustment block 31 to achieve adjustment in the X direction; on the other hand, the first slider can also move up and down along the column 33 to achieve adjustment in the Z direction.
[0036] Meanwhile, the X-direction adjustment block 31 is also equipped with a second slider, which can move on the Y-direction adjustment block 32 to achieve adjustment in the Y direction. Thus, adjustment in the X, Y, and Z directions is realized.
[0037] The measuring mechanism in this embodiment includes a scanning module 4 and a measuring module. The measuring module includes at least one of a V-point device 5 and a binocular obstacle angle measuring device 6, the specific choice depending on the content to be measured. See also... Figures 5 to 7 As shown, the scanning module 4 and the measurement module are connected to the triaxial adjustment mechanism 3 using a common connection method, which makes it more convenient to replace the modules.
[0038] Specifically, in this embodiment, the Y-direction adjustment block 32 is provided with multiple threaded holes, and module connectors are detachably connected to the threaded holes. The module connectors include a connecting disc 34 connected to the threaded holes by bolts, a cylindrical sleeve 35 formed on the connecting disc 34, and a pin 36 provided on the sleeve 35. Correspondingly, the scanning module 4, the V-point device 5, and the binocular obstacle angle measuring device 6 are provided with connecting posts that can extend into the sleeve 35. After the connecting post is extended into place, it can be locked by the pin 36, thereby completing the connection.
[0039] See Figures 8 to 10 The diagram shows the scanning module 4, V-point device 5, and binocular obstacle angle measuring device 6 fixed to the triaxial adjustment mechanism 3 via connecting columns, under the condition of rigid support by the supporting legs; see also... Figures 11 to 13 The diagram shows the scanning module 4, V-point device 5, and binocular obstacle angle measuring device 6 fixed to the triaxial adjustment mechanism 3 via connecting columns in the case of soft airbag support.
[0040] See Figure 14 As shown, it is a schematic diagram of the three-dimensional coordinate system specified in the national standard. Figure 14 The document specifies the directions of the X, Y, and Z axes, as well as the X, Y, and Z reference planes. The X, Y, and Z directions specified in this embodiment are consistent with... Figure 14 Maintain consistency.
[0041] It is worth noting that the V-point device 5 is a multi-purpose detection device. When used for regulatory inspection, it can mark areas A, B, and P. When used for research and development, it can detect the extreme pitch angles of the front and side windows. It can also freely scan and observe obstacles in designated areas.
[0042] Regarding point V, the national standard stipulates that within the passenger compartment, it is the longitudinal vertical plane passing through the center line of the front outer seating position, related to point R and the designed seat back angle. This point is used to check whether the vehicle's visibility meets the requirements.
[0043] The R-point, the seat reference point, is a design point specified by the vehicle manufacturer for each seating position and is determined relative to a three-dimensional coordinate system. The V-point's position relative to the R-point is determined by the X, Y, and Z coordinates of the three-dimensional coordinate system. See details... Figure 15 As shown, the positional relationship between point V and point R is marked on it. Point V includes points V1 and V2. For information about points V1, V2, and point R, please refer to [link to relevant documentation]. Figure 15 The relevant provisions in the national standards will not be repeated here. Figure 15In the diagram, 1 represents the trace along the longitudinal mid-plane of the car, 2 represents the trace along the longitudinal vertical plane passing through point R, and 3 represents the trace along the longitudinal vertical plane passing through points V1 and V2.
[0044] In this embodiment, the V-point device 5 is rotatable in the Z-reference plane, and the V-point device 5 is provided with a first reference point for positioning the V-point, and a first laser emitter 51 whose light-emitting point is set based on the V-point and can rotate around the light-emitting point. The light beam emitted by the first laser emitter 51 includes cross-shaped, straight-line, and dot-shaped beams, and different beam shapes can be selected according to different detection methods. The light-emitting point of the first laser emitter 51 in the V-point device 5 is consistent with the V-point required by regulations, that is, after being adjusted to the correct position along the X, Y, and Z axes by the three-axis adjustment mechanism 3, the position of the light-emitting point of the first laser emitter 51 will correspond to the V-point.
[0045] Specifically, see Figure 16 As shown, the V-point device 5 in this embodiment includes a fixed frame 52 and two first laser emitters 51.
[0046] A fixed frame 52 is rotatably fixed to the three-axis adjustment mechanism 3, and the fixed frame 52 is provided with a first reference point for positioning point V; one end of each of the first laser emitters 51 is rotatably fixed to the fixed frame 52, and the distance between the light emission points of the two first laser emitters 51 is the distance between points V1 and V2.
[0047] In a specific implementation, the V-point device 5 also includes two lifting clamping devices 53 and two fixing clamps 54.
[0048] Two lifting clamping devices 53 are disposed on the fixed frame 52; each of the fixed clamps 54 is rotatably connected to the fixed frame 52 by a first pin 55, and the straight line of the first pin 55 passes through the light-emitting point of the first laser emitter 51; one end of each of the first laser emitters 51 is fixed in the fixed clamp 54, and the other end passes through the lifting clamping device 53.
[0049] In other words, after the first reference point is used for auxiliary positioning and the three-axis adjustment mechanism 3 is adjusted to the correct position, the light emission points of the two first laser emitters 51 installed in the fixed fixture 34 will be aligned with points V1 and V2 respectively.
[0050] The V-point device 3 also includes a rotating disk 56, which is fixed to the bottom end of the fixed frame 52. The rotating disk 56 is marked with angle graduations. In this embodiment, the rotating disk 56 and the fixed frame 52 are fixed to the positioning holes by connecting bracket bolts. This allows the V-point device 3 to rotate relative to the triaxial adjustment mechanism 3 in the Z-reference plane, and readings can be taken via the rotating disk 56.
[0051] Furthermore, the V-point device 5 also includes two adjusting bolts 57, both of which are mounted on the fixed frame 52. Each adjusting bolt 57 is connected to one of the lifting clamping devices 53 to adjust the position of the lifting clamping device 53. Specifically, the fixed frame 52 is provided with two elongated holes. A portion of the lifting clamping device 53 extends out of the elongated holes and is connected to the adjusting bolts 57. By rotating the adjusting bolts 57, the lifting clamping device 53 can move up and down, thereby driving the first laser emitter 51 to rotate around the first pin 55.
[0052] The V-point device 5 also includes a connecting bracket 58, which has a positioning hole for fixing the V-point device 5, and a connecting post that can be inserted into the sleeve 35 as described above.
[0053] In this embodiment, taking point V1 as an example, the corresponding first reference point includes point A located at the first pin 55 on the side of the fixed frame 52. Then, a perpendicular line is drawn upward through point A to obtain the intersection with the top surface of the fixed frame 52. Through this intersection, a perpendicular line is drawn from the top surface toward the other side of the fixed frame 52, and the midpoint of this perpendicular line is recorded as point B of the first reference point.
[0054] Then, draw a perpendicular line from point A to the side surface, and another perpendicular line from point B to the top surface. The intersection of these two perpendicular lines is the emission point of the first laser emitter 51. The principle is similar for point V2, and will not be repeated here in this embodiment.
[0055] After the V-point device 5 is positioned, the region can be divided by the rotation of the V-point device 5 itself and the rotation of the two first laser emitters 51 around the first pin 55. Specifically, the V-point device 3 uses the linear beam of the laser emitter to directly project the boundary contour (line, not point) of the specified region (such as region A, region B, region P, etc.) onto the outer surface of the windshield glass in a single step. During detection, no calculation is required; the lines are drawn directly, thereby improving measurement efficiency. The boundary contours of regions A, B, and P can be found in the relevant standards, and will not be elaborated here.
[0056] The binocular obstruction angle measuring device 6 is mainly used to measure the size of the binocular obstruction angle. It needs to meet the projection measurement requirements of the domestic GB standard and the EU ECE standard for the binocular obstruction angle of the driver's side A-pillar based on point P1 and the binocular obstruction angle of the passenger's side A-pillar based on point P2. Furthermore, it also needs to meet the measurement requirements of the CIS GOST standard for the binocular obstruction angle of the driver's side A-pillar based on point P1, the binocular obstruction angle of the passenger's side A-pillar based on point P2, and the binocular obstruction angle of the center pillar of the front window based on point P3 for different vehicle models.
[0057] First, let's introduce the definitions of points P and E in the standard. See [link to standard definition]. Figure 17and Figure 18 As shown, in the national standard, point P is the center point of head rotation when the driver observes a target in the horizontal plane where their eyes are located, and usually includes points P1 and P2. m Point R is the intersection of the vertical plane passing through point R and the lines connecting P1 and P2. Point E represents the point at the center of the driver's eye. These points are used to evaluate A-pillar visual obstruction. For the location of point P in the measurement coordinate system and the schematic diagram in regulations, please refer to [reference needed]. Figure 19 As shown; the diagram illustrating the relative relationship between points P and E is available in [reference needed]. Figure 20 As shown, the relative relationship between points P and E is similar for the CIS GOST standard.
[0058] In this embodiment, the binocular obstacle angle measuring device 6 is provided with a second reference point for locating point P, and can rotate in the Z reference plane based on the second reference point. The binocular obstacle angle measuring device 6 also includes two second laser emitters 61 whose light emission points are set based on the mounting point and can rotate around the light emission point. The positional relationship between the second reference point and the mounting point is set based on the positional relationship between point P and point E.
[0059] To measure the aforementioned binocular obstruction angle, specifically, see [link to relevant documentation]. Figures 21 to 23 As shown, the binocular obstacle angle measuring device 6 includes a base 62 and two second laser emitters 61. The beams emitted by the second laser emitters 61 include cross-shaped, straight-line, and dot-shaped beams, and different beam shapes can be selected according to different detection methods.
[0060] The base 62 has a reference hole 621 serving as a second reference point, and two mounting holes 622 serving as mounting points. The reference hole 621 corresponds to point P, and the two mounting holes 622 correspond to two positions of point E. One end of each second laser emitter 61 is rotatably connected to the mounting hole 622, and the rotation axis of the second laser emitter 61 passes through the light-emitting point of the second laser emitter 61. See also Figure 20 As shown, corresponding to the standard, when the reference hole 621 corresponds to point P1, the two mounting holes 622 correspond to points E1 and E2; when the reference hole 621 corresponds to point P2, the two mounting holes 622 correspond to points E3 and E4.
[0061] Furthermore, the binocular obstacle angle measuring device 6 also includes: two fixing sleeves 63, an upper cover plate 64, and two angle adjustment sleeves 65.
[0062] Each of the fixed sleeves 63 is provided with a mounting post, which is installed in the mounting hole 622, and the axis of the mounting post passes through the light-emitting point of the second laser emitter 61; the upper cover plate 64 is fixed on the base 62, and the upper cover plate 64 is provided with two arc-shaped holes 641 spaced apart. In this embodiment, the upper cover plate 64 is fixed to the base 62 by cover plate bolts 642.
[0063] Each of the angle adjustment sleeves 65 is provided with an adjustment rod, one end of which extends out of the arc-shaped hole 641 and is provided with a tightening cap 651; one end of each of the second laser emitters 61 is fixed inside the fixing sleeve 63, and the other end is fixed inside the angle adjustment sleeve 65. The two ends of the second laser emitter 61 are fixed to the fixing sleeve 63 and the angle adjustment sleeve 65 respectively, allowing it to remain horizontal. Preferably, the tightening cap 651 is also adapted to be equipped with a washer 643, which increases the locking friction during the tightening process.
[0064] Understandably, see Figure 24 As shown, by moving the tightening cap 651 within the arc-shaped hole 641, the angle adjustment sleeve 65 can be rotated together, thereby causing the second laser emitter 61 to rotate around the mounting post. Preferably, a scale is also provided on the arc-shaped hole 641. When the laser emitter representing point E1 or E2 rotates, the relative angle of rotation can be read through the scale, that is, the binocular obstruction angle required by regulations.
[0065] Preferably, see Figure 7 and 25 As shown, the binocular obstacle angle measuring device 6 also includes a measuring platform 66, which is fixed on the three-axis adjustment mechanism 3. The measuring platform 66 is provided with the connecting column of the extendable sleeve 35 mentioned above.
[0066] In addition, the measuring platform 66 is provided with a first measuring hole 661 corresponding to point P1 to measure the driver's side binocular obstruction angle relative to point P1. The measuring platform 66 is also provided with a second measuring hole 662 corresponding to point P2 to measure the passenger side binocular obstruction angle relative to point P2. The measuring platform 66 can be aligned with the reference hole 621 on the base 62 based on the first measuring hole 661 or the second measuring hole 662 for fixation.
[0067] Furthermore, in order to meet the requirements of the GOST standard, the measurement platform 66 is also provided with a third measurement hole 663 corresponding to point P3, so as to measure the binocular obstruction angle of the front window center pillar relative to point P3. The measurement platform 66 can also be fixed by aligning the third measurement hole 663 with the reference hole 621 on the base 62.
[0068] In other words, see Figure 25As shown, the binocular obstacle angle measuring device 6 can be installed on the measuring platform 66, which has three position points P1, P2, and P3. The binocular obstacle angle measuring device 6 can be installed at one of the P points according to the measurement requirements and can rotate horizontally around that point.
[0069] It is worth noting that the first measuring hole 661, the second measuring hole 662, and the third measuring hole 663 are designed based on the relative positional relationship of points P1, P2, and P3. Therefore, when any point is selected for measurement, such as point P1, points P2 and P3 will also be in position synchronously after the adjustment is completed. In other words, once the adjustment is completed, no further calibration is required. The binocular obstacle angle measuring device 6 can be removed and installed at points P2 and P3 to complete the subsequent angle measurement.
[0070] For horizontal binocular obstruction angle measurement, taking the binocular obstruction angle of the driver's side A-pillar as an example, point P1 is selected for installation.
[0071] See Figure 18 As shown, rotate the binocular obstruction angle measuring device 6 at point P1 so that the cross-shaped beam emitted from point E1 falls on the boundary of the transparent area of the driver's side A-pillar side window glass. Secure point P1, then rotate point E2 horizontally to the right until the laser beam falls on the boundary of the transparent area of the driver's side A-pillar windshield glass. The angle of rotation of point E2 is the binocular obstruction angle of the driver's side A-pillar, which can be read directly from the dial. For the passenger side A-pillar, point P2 is selected as the installation position for the binocular obstruction angle, and point P3 is selected for the binocular obstruction angle of the center pillar of the windshield; the measurement principle is the same.
[0072] The principle of the portable vehicle forward visibility measurement system in this embodiment is described below: First, the scanning module 4 is installed on the three-axis adjustment mechanism 3. By adjusting the three-axis adjustment mechanism 3, the scanning module 4 scans target points inside the target vehicle. These target points can be vehicle lock latches, markings on windows, or markings on the steering wheel, etc. Since the three-axis adjustment mechanism 3 is located on the rotating disk 11, and the support mechanism 2 can adjust the height of the fixed disk 1, a full-range scan of the vehicle interior can be performed. When the calibration point on the fixed disk 1 matches the R-point of the theoretical digital model, the scanning module can be disassembled, and the measurement module can be installed for subsequent measurements. The measurement module is the aforementioned V-point device 5 and binocular obstacle angle measurement device 6; their structure and principle will not be described in detail here.
[0073] Therefore, by adopting the portable automotive forward visibility measurement system of this application, a measurement coordinate system is created with the design R point as the origin by comparing the actual scanned digital model with the design digital model. This eliminates the dependence on a three-coordinate platform and a three-dimensional H-point device, significantly reducing equipment investment costs and meeting the core requirement of enterprises to keep automotive design parameters confidential.
[0074] At the same time, it can be used as a design verification tool in the R&D stage (such as a quick assessment of the driver's forward vision), and can also be used in conjunction with a coordinate measuring machine and a three-dimensional H-point device for regulatory testing, or used alone as a measurement tool for finalized products.
[0075] In addition, it supports two installation methods: rigid support feet and soft airbag support, which can flexibly adapt to various vehicle models (including vehicle testing, body-in-white testing and bench testing). The installation process is simple and quick, effectively avoiding the time waste and cost increase caused by repeated rectification after the sample vehicle fails the inspection, and greatly improving the testing efficiency and economic benefits of the automotive R&D and certification process.
[0076] Secondly, embodiments of this application provide a portable method for measuring the forward field of vision of a vehicle.
[0077] In one embodiment, reference is made to Figure 26 , Figure 26 This is a flowchart of an embodiment of the portable measurement method for forward visibility of a vehicle according to this application. Figure 26 As shown, the portable method for measuring the forward field of vision of a vehicle includes: S1. Fix the scanning module 4 on the three-axis adjustment mechanism 3, and use the scanning module 4 to scan the target points inside the target vehicle by adjusting the three-axis adjustment mechanism 3. S2. Compare the scanned digital model with the digital model designed for the target vehicle, and move the fixed plate 1 and / or adjust the support mechanism 2 so that the calibration point on the fixed plate 1 is located at the R point of the target vehicle. S3. Remove the scanning module 4, install the measurement module on the three-axis adjustment mechanism 3, and adjust the three-axis adjustment mechanism 3 until the measurement module is in place for measurement.
[0078] It is worth noting that the measurement module in this embodiment includes at least one of the V-point device 5 and the binocular obstacle angle measurement device 6.
[0079] In other words, after the calibration point on the fixed plate 1 is moved to the R point of the target vehicle, the V-point device 5 or the binocular obstacle angle measuring device 6 can be installed for measurement, depending on the measurement content, or the V-point device 5 and the binocular obstacle angle measuring device 6 can be installed sequentially for measurement. The structure and principle of the V-point device 5 and the binocular obstacle angle measuring device 6 will not be described in detail here.
[0080] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0081] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0082] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A portable measurement system for forward visibility of a vehicle, characterized in that, The portable vehicle forward visibility measurement system includes: A fixed disk (1) is provided with a rotating disk (11), and the fixed disk (1) is also provided with a calibration point for positioning; A support mechanism (2) is provided on the fixed plate (1) and the height of the fixed plate (1) can be adjusted; A three-axis adjustment mechanism (3) is mounted on the rotary disk (11); The measuring mechanism includes a scanning module (4) and a measuring module, which are optionally fixed to the triaxial adjustment mechanism (3).
2. The portable vehicle forward visibility measurement system as described in claim 1, characterized in that, The support mechanism (2) includes: At least three first support columns (21) are provided at the bottom end of the fixed plate (1); Adjusting arms (22) are provided, the number of which corresponds to the number of the first support column (21), and the adjusting arms (22) are connected to the first support column (21); The number of second support columns (23) corresponds to that of the first support columns (21). The second support columns (23) are connected to the adjusting arm (22) and can slide along the adjusting arm (22). The outrigger (24) is connected to the second support column (23) and can extend and retract relative to the second support column (23).
3. The portable vehicle forward visibility measurement system as described in claim 1, characterized in that, The support mechanism (2) includes: At least three adjusting rods (25), one end of each adjusting rod (25) being connected to the bottom end of the fixed plate (1); Airbags (26), the number of which corresponds to the adjusting rod (25), and connected to the other end of the adjusting rod (25); An air compressor station (27) is connected to all of the airbags (26) and can independently adjust the air intake of each of the airbags (26).
4. The portable vehicle forward visibility measurement system as described in claim 1, characterized in that: The measurement module includes at least one of a V-point device (5) and a binocular obstacle angle measurement device (6); The V-point device (5) can rotate in the Z-reference plane, and the V-point device (5) is provided with a first reference point for positioning the V-point, and a first laser emitter (51) whose light-emitting point is set based on the V-point and can rotate around the light-emitting point. The binocular obstacle angle measuring device (6) is provided with a second reference point for positioning point P, and can rotate on the Z reference plane based on the second reference point. The binocular obstacle angle measuring device (6) also includes two second laser emitters (61) whose light emission points are set based on the mounting point and can rotate around the light emission point. The positional relationship between the second reference point and the mounting point is set based on the positional relationship between point P and point E.
5. The portable vehicle forward visibility measurement system as described in claim 4, characterized in that, The V-point device (5) includes: A fixed frame (52) is rotatably fixed to the three-axis adjustment mechanism (3), and the fixed frame (52) is provided with a first reference point for positioning point V; Two first laser emitters (51), one end of each first laser emitter (51) is rotatably fixed on the fixed frame (52), and the distance between the light emission points of the two first laser emitters (51) is the distance between points V1 and V2.
6. The portable vehicle forward visibility measurement system as described in claim 5, characterized in that, The V-point device (5) further includes: Two lifting clamping devices (53) are mounted on the fixed frame (52); Two fixing clamps (54) are respectively rotatably connected to the fixing frame (52) by a first pin (55), and the straight line of the first pin (55) passes through the light-emitting point of the first laser emitter (51); One end of each of the first laser emitters (51) is fixed in the fixed clamp (54), and the other end passes through the lifting clamping device (53).
7. The portable vehicle forward visibility measurement system as described in claim 4, characterized in that, The binocular obstacle angle measuring device (6) includes: The base (62) has a reference hole (621) as a second reference point and two mounting holes (622) as mounting points. The reference hole (621) corresponds to point P, and the two mounting holes (622) correspond to two positions of point E. One end of each of the second laser emitters (61) is rotatably connected to the mounting hole (622), and the rotation axis of the second laser emitter (61) passes through the light-emitting point of the second laser emitter (61).
8. The portable vehicle forward visibility measurement system as described in claim 7, characterized in that: The binocular obstacle angle measuring device (6) includes: Two fixing sleeves (63), each fixing sleeve (63) is provided with a mounting post, the mounting post is installed in the mounting hole (622), and the axis of the mounting post passes through the light-emitting point of the second laser emitter (61); The upper cover plate (64) is fixed on the base (62), and two arc-shaped holes (641) are provided on the upper cover plate (64) at intervals. Two angle adjustment sleeves (65), each of the angle adjustment sleeves (65) is provided with an adjustment rod, one end of the adjustment rod extends out of the arc-shaped hole (641) and is provided with a tightening cap (651). One end of each of the second laser emitters (61) is fixed inside the fixing sleeve (63), and the other end is fixed inside the angle adjustment sleeve (65).
9. The portable vehicle forward visibility measurement system as described in claim 8, characterized in that, The binocular obstruction angle measuring device (6) also includes: A measuring platform (66) is fixed on the three-axis adjustment mechanism (3), and the measuring platform (66) is provided with: The first measuring hole (661) corresponding to point P1 is used to measure the driver-side binocular obstacle angle relative to point P1; The second measuring aperture (662) corresponding to point P2 is used to measure the passenger-side binocular obstruction angle relative to point P2; The third measuring hole (663) corresponding to point P3 is used to measure the binocular obstruction angle relative to the center pillar of the front window at point P3; The measuring platform (66) can be aligned with the reference hole (621) on the base (62) based on the first measuring hole (661), the second measuring hole (662) or the third measuring hole (663) for fixing.
10. A portable method for measuring the forward field of vision of an automobile using the portable measurement system for forward field of vision as described in claim 1, characterized in that, The portable method for measuring the forward field of vision of a vehicle includes: The scanning module (4) is fixed on the three-axis adjustment mechanism (3). By adjusting the three-axis adjustment mechanism (3), the scanning module (4) scans the target points inside the target vehicle. By comparing the scanned digital model with the digital model designed for the target vehicle, the calibration point on the fixed plate (1) is located at the R point of the target vehicle by moving the fixed plate (1) and / or adjusting the support mechanism (2). Remove the scanning module (4), install the measurement module on the three-axis adjustment mechanism (3), and adjust the three-axis adjustment mechanism (3) until the measurement module is in place for measurement.