Surveying and mapping method for view area in front of driver

Abstract

The invention discloses a surveying and mapping method for a visual field area in front of a driver. The surveying and mapping method comprises the following steps: (1) setting detection equipment, wherein the detection equipment comprises a base, a dummy trunk, an eyespot bracket and a detection assembly; (2) the detection equipment is installed on a seat of a tested automobile, the intersection point of a trunk body of the dummy trunk and a rotating shaft coincides with the R point, a sliding rod of an eye point support is adjusted to be in a vertical position and fixed, a through hole in the front end of a detection support is arranged on the sliding rod of the eye point support in a sleeving mode, and a laser emitting point of a laser module coincides with a V point defined by the GB11562-2014 standard; (3) the detection assembly is adjusted in the Z direction, wherein the detection assembly is moved to the corresponding position and fixed according to the value of the Z axis in the V point in GB11562-2014; and (4) according to a method in GB 11562-2014, controlling the laser module to irradiate the key point lines on the automobile windshield one by one and marking the key point lines, and then drawing a view area in front of the driver. An original manual surveying and mapping method can be replaced, and the view area in front of a driver can be rapidly and accurately drawn according to standard requirements.

Description

Technical Field

[0001] The invention relates to a mapping method, and in particular to a mapping method for a driver's front visual field area. Background Art

[0002] The driver's forward field of vision is related to whether the driver can find and avoid obstacles on the road ahead, and plays a vital role in the safe driving of the car and the safety of pedestrians. When necessary, the car windshield (especially the driver's forward field of vision) needs to be defrosted and defogged, so accurate mapping of the driver's forward field of vision is very important for designing the defrosting and defogging system of the car windshield. The measurement and mapping methods of the driver's forward field of vision are introduced in "GB11555-2009 Performance and Test Methods of Automobile Windshield Defrosting and Defogging Systems" and "GB11562-2014 Requirements and Measurement Methods for Automobile Driver's Forward Field of Vision".

[0003] At present, the cantilever coordinate measuring machine or portable coordinate measuring machine is usually used to measure the driver's front field of view, and the A, B and A' areas on the windshield in front of the driver are delineated in combination with a three-dimensional H-point inspection device and a data calculation table. This method consumes a lot of time in the process of finding the measuring points that meet the requirements, which is not conducive to conducting tests quickly and effectively, and requires high experience and ability of the operator. Manual connection is prone to measurement errors. Summary of the invention

[0004] The purpose of the present invention is to provide a method for mapping the driver's front field of vision in view of the defects of the above-mentioned prior art, which can replace the original manual mapping method and quickly and accurately map the driver's front field of vision according to standard requirements.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a method for mapping the driver's front visual field area, comprising the following steps: (a) setting up a detection device: the detection device comprises a base, a dummy torso, an eye point bracket, and a detection assembly, the dummy torso comprises a rotating shaft and a torso body, the two ends of the rotating shaft are respectively hinged to the base, the eye point bracket comprises a bottom bracket and a sliding rod connected to the bottom bracket, the bottom bracket is hinged to the rotating shaft, the detection assembly comprises a detection bracket and a laser module, the detection bracket is mounted on the sliding rod of the eye point bracket, and the laser module is arranged on the detection bracket; (b) installing the detection device on the seat of the test car: first adjust the seat back to a 25-degree angle, and then install the detection device base on the seat cushion, so that the intersection of the torso body of the dummy torso and the rotating shaft coincides with the sitting reference point (point R), the dummy torso leans on the seat back, adjust the sliding rod of the eye point bracket to a vertical position and fix the sliding rod, the front end through hole of the detection bracket is sleeved on the sliding rod of the eye point bracket, and the laser emission point of the laser module is aligned with GB (iii) Manually adjust the detection component in the Z direction: according to the value of the Z axis in the "V" point in GB 11562-2014, move the detection component to the corresponding position on the slide bar and fix the detection component on the slide bar; (iv) Mark the key points on the car windshield and draw the driver's front field of vision: According to the method in GB11562-2014, control the laser module to illuminate and mark the key point lines on the car windshield one by one, and draw the driver's front field of vision according to the key point lines.

[0006] A further technical solution of the present invention is: the torso body of the dummy torso of the detection equipment arranged in step (i) is connected to the middle of the rotating shaft and extends obliquely backward and upward, the two ends of the rotating shaft are respectively hinged to the base, the rotating shaft can rotate relative to the base, the torso body can swing back and forth relative to the base with the rotating shaft, and the bottom end of the bottom bracket of the eye point bracket is hinged to the rotating shaft.

[0007] A further technical solution of the present invention is: the bottom bracket of the eyepoint bracket includes a horizontal arm and two vertical arms respectively connected to the two ends of the horizontal arm and extending downward, the bottom ends of the two vertical arms are respectively hinged to the rotating shaft, the horizontal arm is provided with a connecting hole, the bottom end of the sliding rod is installed in the connecting hole of the horizontal arm, and the upper end of the sliding rod extends straight upward.

[0008] A further technical solution of the present invention is: the detection bracket of the detection equipment set in step (a) includes a front connecting block, a rear lower support plate and a rear upper support plate, a through hole connected to the sliding rod is provided at the front end of the front connecting block, and a fixing screw hole is also provided on the side wall of the through hole of the front connecting block. The fixing bolt can fix the front connecting block to the surface of the sliding rod through the fixing screw hole, the front end of the rear lower support plate is connected to the rear end of the front connecting block, the rear upper support plate is located on the upper side of the rear lower support plate, and the laser module is installed on the rear upper support plate.

[0009] A further technical solution of the present invention is: the detection component also includes a laser module position adjustment device and an intelligent control system, the laser module position adjustment device includes a laser module left and right adjustment component and a laser module up and down adjustment component, the laser module left and right adjustment component includes a low-speed stepper motor 1 and a left and right rotating turntable, the low-speed stepper motor 1 is installed on the upper surface of the rear lower support plate, the output end of the low-speed stepper motor 1 is connected to the left and right rotating turntable through a transmission device, and the left and right rotating turntable is then connected to the bottom surface of the rear upper support plate, the laser module up and down adjustment component includes a low-speed stepper motor 2 and an up and down rotating turntable, the low-speed stepper motor 2 is installed on the upper surface of one side of the rear upper support plate, the output end of the low-speed stepper motor 2 is connected to the up and down rotating turntable through a transmission device, and the up and down rotating turntable is then connected to the laser module, and the intelligent control system is respectively connected to the control ends of the low-speed stepper motor 1 and the low-speed stepper motor 2.

[0010] A further technical solution of the present invention is: the laser module includes a laser and a laser support frame, one end of the laser support frame is provided with a through groove for positioning the laser, the laser is positioned in the through groove, and the other end of the laser support frame is connected to the upper and lower rotating turntables.

[0011] A further technical solution of the present invention is: in step (iv), controlling the laser module to illuminate the key points and lines on the automobile windshield is to input a control program into the intelligent control system to control the low-speed stepper motor 1 and the low-speed stepper motor 2 to move the laser module and illuminate the key points and lines on the automobile windshield one by one.

[0012] The present invention provides a method for mapping a driver's front visual field area, which has the following beneficial effects: when setting up a detection device, a dummy torso and an eye point bracket are connected to a base, and a detection component is connected to the rear side of the eye point bracket, and when the device is installed on a car seat, the intersection of the torso body of the dummy torso and the rotating shaft coincides with the sitting reference point (point R), and the laser emission point is adjusted to coincide with the "V" point defined in the GB11562-2014 standard. In step (iv), only a control program needs to be input from a control intelligent control system, so that the laser module moves up, down, left, and right under the drive of a low-speed stepping motor 1 and a low-speed stepping motor 2, and the key points on the car windshield where the laser is irradiated are marked according to the method of GB11562-2014, so that the A, B and A' areas on the car windshield can be delineated, and the A, B and A' areas of the driver's front windshield can be quickly and accurately delineated and measured, replacing the original manual mapping method, shortening a lot of time, improving the detection quality, reducing personnel input, and saving detection costs.

[0013] The following is a further description of a method for mapping a driver's front visual field area according to the present invention in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a right view of a detection device used in a method for mapping a driver's front visual field area according to the present invention; Figure 2 yes Figure 1 a rear view of the detection device shown; Figure 3 yes Figure 1 A perspective view of the detection device shown; Figure 4 yes Figure 3 Another view of the detection device shown; Figure 5 is an enlarged view of a detection component of a detection device; Explanation of the accompanying numbers: 1-shaft, 2-dummy torso, 3-eye point bracket, 4-detection component, 5-vertical arm, 6-horizontal arm, 7-slide bar, 8-anti-rotation plane, 9-through hole, 10-laser module left and right adjustment component, 11-rear upper support plate, 12-laser module, 13-branches, 14-laser module up and down adjustment component, 15-rear lower support plate, 16-front connecting block, 17-trunk body, 18-connecting hole, 19-left and right rotating turntable, 20-low-speed stepper motor 1, 21-laser, 22-laser support frame, 23-low-speed stepper motor 2, 24-up and down rotating turntable, 25-flat inner wall surface, 26-fixing screw hole. DETAILED DESCRIPTION

[0015] The present invention provides a method for mapping a driver's front visual field area, comprising the following steps: (I) Setting up testing equipment: Figures 1 to 5As shown, the detection device includes a base, a dummy torso 2, an eye point bracket 3, and a detection assembly 4. The base is an existing mechanism that is not shown in the diagram. The dummy torso 2 includes a rotating shaft 1 and a torso body 17. The two ends of the rotating shaft 1 are respectively hinged to the base. The eye point bracket 3 includes a bottom bracket and a slide bar 7 connected to the bottom bracket. The bottom bracket is hinged to the rotating shaft 1. The detection assembly 4 includes a detection bracket and a laser module 12. The detection bracket is mounted on the slide bar 7 of the eye point bracket 3. The laser module 12 is arranged on the detection bracket. The torso body 17 of the dummy torso 2 is connected to the middle of the rotating shaft 1 and extends backward and upward. The two ends of the rotating shaft 1 are respectively hinged to the base. The rotating shaft 1 can rotate relative to the base. The torso body 17 can swing back and forth relative to the base together with the rotating shaft 1. The bottom end of the bottom bracket of the eye point bracket 3 is hinged to the rotating shaft 1. The bottom bracket of the eye point bracket 3 includes a horizontal arm 6 and two vertical arms 5 respectively connected to the two ends of the horizontal arm 6 and extending downward. The bottom ends of the two vertical arms 5 are respectively hinged to the rotating shaft 1. The horizontal arm 6 is provided with a connecting hole 18. The center line of the connecting hole 18 is offset to the left by a distance L relative to the center line of the horizontal arm 6. The center line of the horizontal arm 6 and the riding reference point (point R) are in the same vertical plane, and the center line of the horizontal arm 6 is located directly in front of the riding reference point (point R). The bottom end of the slide bar 7 is installed in the connecting hole 18 of the horizontal arm 6, and the upper end of the slide bar 7 extends straight upward. The slide bar 7 is installed in the connecting hole 18 and is offset to the left by a distance L relative to the riding reference point (point R). A fixing device (not shown in the figure) for fixing the slide bar 7 can be set at the bottom end of the horizontal arm 6 and the inner side of the two vertical arms 5. One side surface of the slide bar 7 is provided with an anti-rotation plane 8 that can prevent the detection bracket from rotating relative to the slide bar 7. The inner wall of the through hole 9 that matches the detection bracket and the slide bar 7 is provided with a flat inner wall surface 25 that matches the anti-rotation plane 8. The detection bracket will not rotate relative to the slide bar 7 when it is sleeved on the slide bar 7. The detection bracket includes a front connecting block 16, a rear lower supporting plate 15 and a rear upper supporting plate 11. A through hole 9 connected to the slide bar 7 is provided at the front end of the front connecting block 16. A fixing screw hole 26 is also provided on the side wall of the through hole 9 of the front connecting block 16. The fixing bolt can fix the front connecting block 16 to the surface of the slide bar 7 through the fixing screw hole 26. The front end of the rear lower supporting plate 15 is connected to the rear end of the front connecting block 16. The rear end of the rear lower supporting plate 15 deviates to the right by a distance L relative to the center line of the through hole 9 of the front connecting block 16. The rear upper supporting plate 11 is connected above the rear lower supporting plate 15. The laser module 12 is installed on the rear upper supporting plate 11. Since the distance of the right deviation of the rear end of the rear lower supporting plate 15 is equal to the distance of the left deviation of the slide bar 7, the laser module 12 is installed on the rear upper supporting plate 11 and is located directly behind the riding reference point (point R). The use of this design can also prevent the laser module 12 from being blocked by the slide bar 7.In this embodiment, the detection component 4 also includes a laser module position adjustment device and an intelligent control system. The laser module position adjustment device includes a laser module left-right adjustment component 10 and a laser module up-down adjustment component 14. The laser module left-right adjustment component 10 includes a low-speed stepper motor 20 and a left-right rotating turntable 19. The low-speed stepper motor 20 is installed on the upper surface of the rear lower support plate 15. The output end of the low-speed stepper motor 20 is connected to the left-right rotating turntable 19 through a transmission device, and the left-right rotating turntable 19 is then connected to the bottom surface of the rear upper support plate 11. The laser module up-down adjustment component 14 includes a low-speed stepper motor 23 and an up-down rotating turntable 24. The low-speed stepper motor 23 is installed on the upper surface of one side of the rear upper support plate 11. The output end of the low-speed stepper motor 23 is connected to the up-down rotating turntable 24 through a transmission device, and the up-down rotating turntable 24 is then connected to the laser module 12. The intelligent control system is respectively connected to the control ends of the low-speed stepper motor 20 and the low-speed stepper motor 23. The laser module 12 includes a laser 21 and a laser support frame 22 . A through groove for positioning the laser 21 is provided at one end of the laser support frame 22 . The laser 21 is positioned in the through groove. The other end of the laser support frame 22 is connected to an upper and lower rotating turntable 24 .

[0016] (ii) Install the detection equipment on the seat of the test vehicle: first adjust the seat back (not shown in the figure) to a 25-degree angle, then install the base of the detection equipment on the seat cushion, so that the intersection of the trunk body 17 of the dummy torso 2 and the rotating shaft 1 coincides with the sitting reference point (point R), the dummy torso 2 leans on the seat back, so that the dummy torso 2 simulates the human torso leaning against the seat back, connect the counterweight block to the branch 13 according to the human body weight, adjust the slide bar 7 of the eye point bracket 3 to the vertical position and fix the slide bar 7, the front end through hole 9 of the detection bracket is mounted on the slide bar 7 of the eye point bracket 3, and the laser emission point of the laser module 12 coincides with the "V" point defined in the GB 11562-2014 standard. The laser emission point of the laser module 12 coincides with the "V" point defined in the GB11562-2014 standard, that is, the laser emission point is at the V point in the longitudinal vertical plane of the center line of the front outer seating position. The meaning and determination method of the "V" point are defined in the GB11562-2014 standard. The laser emission point can be at the V point because when designing the detection bracket, the distance that the slide bar 7 is offset to the left and forward is considered. According to its position size relative to the seating reference point (point R), and the position size of the V point relative to the seating reference point (point R), the laser emission point of the laser module 12 is offset to the "V" point specified in the GB11562-2014 standard through the detection bracket. The "V" point and "R" point of this patent have the same meaning as the "V point" and "R point" described in "GB11555-2009 Performance and test method of automobile windshield defrosting and defogging system" and "GB11562-2014 Requirements and measurement method for forward vision of automobile driver", which can be understood by those skilled in the art and will not be introduced in detail here.

[0017] (iii) Manually adjusting the detection component 4 in the Z direction: according to the value of the Z axis at the “V” point in GB 11562-2014, move the detection component 4 to the corresponding position on the slide bar 7 and fix the detection component 4 on the slide bar 7.

[0018] (IV) Marking key points on the car windshield and drawing the driver's front field of vision: According to the method in GB11562-2014, the laser module 12 is controlled to illuminate and mark the key points on the car windshield one by one, and the driver's front field of vision is drawn according to the key points. In step (IV), the laser module 12 is controlled to illuminate the key points on the car windshield, and the control program is input into the intelligent control system to control the low-speed stepper motor 1 20 and the low-speed stepper motor 2 23 to move the laser module 12 and illuminate the key points on the car windshield one by one.

[0019] During operation, in step (iii), the detection component 4 is first moved to the V1 position, and the fixing bolt (not shown in the figure) fixes the front connecting block 16 to the surface of the slide bar 7 through the fixing screw hole 26, and then the step (iv) is entered to mark the key point line emitted by the laser from the V1 point, and then return to step (iii) to first move the detection component 4 to the V2 position, and the fixing bolt fixes the front connecting block 16 to the surface of the slide bar 7 through the fixing screw hole 26, and then enter the step (iv) to mark the key point line emitted by the laser from the V2 point, and finally draw the A, B and A' areas on the car windshield according to the key point lines, so as to realize the rapid and accurate demarcation and measurement of the A, B and A' areas of the windshield in front of the driver.

[0020] The above embodiments are only preferred embodiments of the present invention. The structure and method of the present invention are not limited to the forms listed in the above embodiments. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for mapping a driver's front visual field, characterized in that: The following steps are involved: (i) Setting up a detection device: The detection device comprises a base, a dummy torso (2), an eye point bracket (3), and a detection assembly (4), wherein the dummy torso (2) comprises a rotating shaft (1) and a torso body (17), wherein both ends of the rotating shaft (1) are respectively hinged to the base, the eye point bracket (3) comprises a bottom bracket and a sliding rod (7) connected to the bottom bracket, and the bottom bracket is hinged to the rotating shaft (1), and the detection assembly (4) comprises a detection bracket and a laser module (12), wherein the detection bracket is mounted on the sliding rod (7) of the eye point bracket (3), and the laser module (12) is arranged on the detection bracket; (ii) Installing the detection equipment on the seat of the test vehicle: first adjust the seat back to a 25-degree angle, then install the base of the detection equipment on the seat cushion, so that the intersection of the trunk body (17) of the dummy torso (2) and the rotation axis (1) coincides with the seating reference point (point R), the dummy torso (2) leans against the seat back, adjust the slide bar (7) of the eye point bracket (3) to a vertical position and fix the slide bar (7), the front end through hole (9) of the detection bracket is mounted on the slide bar (7) of the eye point bracket (3), and the laser emission point of the laser module (12) coincides with the "V" point defined in the GB 11562-2014 standard; (iii) Manually adjusting the detection component (4) in the Z direction: according to the value of the Z axis at the "V" point in GB 11562-2014, move the detection component (4) to the corresponding position on the slide bar (7) and fix the detection component (4) on the slide bar (7); (iv) Marking key points on the automobile windshield and drawing the driver's front field of vision: According to the method in GB 11562-2014, the laser module (12) is controlled to illuminate and mark key point lines on the automobile windshield one by one, and the driver's front field of vision is drawn based on the key point lines.

2. A method for mapping a driver's front visual field according to claim 1, characterized in that: The torso body (17) of the dummy torso (2) of the detection device provided in step (1) is connected to the middle of the rotating shaft (1) and extends obliquely backward and upward, the two ends of the rotating shaft (1) are respectively hinged to the base, the rotating shaft (1) can rotate relative to the base, the torso body (17) can swing forward and backward relative to the base together with the rotating shaft (1), and the bottom end of the bottom bracket of the eye point bracket (3) is hinged to the rotating shaft (1).

3. A method for mapping a driver's front visual field as claimed in claim 2, characterized in that: The bottom bracket of the eye point bracket (3) comprises a horizontal arm (6) and two vertical arms (5) respectively connected to both ends of the horizontal arm (6) and extending downward, the bottom ends of the two vertical arms (5) are respectively hinged to the rotating shaft (1), the horizontal arm (6) is provided with a connecting hole (18), the bottom end of the sliding rod (7) is installed in the connecting hole (18) of the horizontal arm (6), and the upper end of the sliding rod (7) extends straight upward.

4. A method for mapping a driver's front visual field according to claim 1, characterized in that: The detection bracket of the detection device provided in step (1) comprises a front connecting block (16), a rear lower supporting plate (15) and a rear upper supporting plate (11); a through hole (9) connected to the slide bar (7) is provided at the front end of the front connecting block (16); a fixing screw hole (26) is also provided on the side wall of the through hole (9) of the front connecting block (16); a fixing bolt can fix the front connecting block (16) to the surface of the slide bar (7) through the fixing screw hole (26); the front end of the rear lower supporting plate (15) is connected to the rear end of the front connecting block (16); the rear upper supporting plate (11) is located on the upper side of the rear lower supporting plate (15); and the laser module (12) is mounted on the rear upper supporting plate (11).

5. A method for mapping a driver's front visual field as claimed in claim 4, characterized in that: The detection component (4) further comprises a laser module position adjustment device and an intelligent control system. The laser module position adjustment device comprises a laser module left-right adjustment component (10) and a laser module up-down adjustment component (14). The laser module left-right adjustment component (10) comprises a low-speed stepper motor (20) and a left-right rotating turntable (19). The low-speed stepper motor (20) is mounted on the upper surface of the rear lower support plate (15). The output end of the low-speed stepper motor (20) is connected to the left-right rotating turntable (19) through a transmission device. The left-right rotating turntable (19) ) is then connected to the bottom surface of the rear upper support plate (11), the laser module up and down adjustment component (14) includes a low-speed stepper motor 2 (23) and an up and down rotating turntable (24), the low-speed stepper motor 2 (23) is installed on the upper surface of one side of the rear upper support plate (11), the output end of the low-speed stepper motor 2 (23) is connected to the up and down rotating turntable (24) through a transmission device, and the up and down rotating turntable (24) is then connected to the laser module (12), and the intelligent control system is respectively connected to the control ends of the low-speed stepper motor 1 (20) and the low-speed stepper motor 2 (23).

6. A method for mapping the driver's front visual field as claimed in claim 5, characterized in that: The laser module (12) comprises a laser (21) and a laser support frame (22); one end of the laser support frame (22) is provided with a through groove for positioning the laser (21); the laser (21) is positioned in the through groove; and the other end of the laser support frame (22) is connected to an upper and lower rotating turntable (24).

7. A method for mapping a driver's front visual field as claimed in claim 5, characterized in that: In step (iv), the laser module (12) is controlled to illuminate the key points and lines on the automobile windshield, by inputting a control program into the intelligent control system to control the low-speed stepper motor 1 (20) and the low-speed stepper motor 2 (23) to operate so that the laser module (12) moves and illuminates the key points and lines on the automobile windshield one by one.

Images