Vehicle two-row human body height checking method

Abstract

The invention provides a vehicle two-row human body height checking method, which comprises the steps of determining the positions of a backrest and a headrest of a front-row seat based on the H-point position and the trunk inclination angle of a front-row human body model, and determining the pose of an inner rearview mirror based on the positions of left and right eye points of the human body model on a driving position; based on the initial position of the H point of the rear-row human body model and the initial positions of the backrest and the headrest of the rear-row seat; determining the shielding area of a backrest and a headrest of a rear-row seat on rear windshield glass, and adjusting the H-point position and / or the trunk inclination angle of the rear-row human body model and the position of the rear windshield glass to reduce the shielding area; and optimizing the rear-row side window glass position based on the H-point height of the rear-row human body model. By adjusting the relative positions of the front-row seats, the rear-row seats, the inner rearview mirrors, the rear windshield glass and the rear-row side window glass, the rear observation view of the inner rearview mirrors and the lateral view of rear-row passengers are optimized, and the probability of setting change caused by the problem of poor view in later real vehicle verification is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of human position design, and provides a vehicle second-row human height checking method. BACKGROUND

[0002] At present, automobile users pay special attention to the riding experience of second-row passengers (rear passengers), which involves multiple elements such as space, comfort, field of view, and configuration. At present, the vehicle industry mainly focuses on the requirements of vehicle passability, head space, H30, and vehicle height limit when designing the vertical position of second-row passengers. After determining the human height position in this way, the position of the second-row seat is determined accordingly.

[0003] The above-mentioned position design method of the second-row seat ignores the field of view element of the second-row passenger, and the following problems are prone to occur:

[0004] (1) When the height of the second-row seat is set too high, the backrest and headrest of the second-row seat may block the rear field of view of the driver's inside rearview mirror;

[0005] (2) When the height of the second-row seat is set too low, the sitting posture of the second-row passenger is low, and the second-row passenger is cramped in the passenger compartment, in addition, the side observation field of view of the second-row passenger is also affected. SUMMARY

[0006] In view of this, the present application provides a vehicle second-row human height checking method to improve the above-mentioned problems.

[0007] Specifically, the technical scheme includes the following:

[0008] On the one hand, the present application provides a vehicle second-row human height checking method, which is specifically as follows:

[0009] (1) Determine the initial positions of the inside rearview mirror, rear windshield, and rear side window glass;

[0010] (2) Determine the positions of the backrest and headrest of the front-row seat based on the H point position and torso inclination angle of the front-row human model, and determine the pose of the inside rearview mirror based on the left eye point and right eye point positions of the human model on the driver's seat;

[0011] (3) Obtain the initial position of the H point of the rear-row human model based on the relative positions of the H points of the front-row human model and the rear-row human model, and determine the initial positions of the backrest and headrest of the rear-row seat;

[0012] (4) Determine the blocking area of the backrest and headrest of the rear-row seat on the rear windshield when the human model on the driver's seat observes the rear windshield through the inside rearview mirror, and reduce the blocking area by adjusting the H point position and / or torso inclination angle of the rear-row human model and the position of the rear windshield;

[0013] (5) Optimizing the position of the rear side window glass based on the height of the H point of the rear human body model.

[0014] In some embodiments of the present application, after step (5) further comprises:

[0015] (6) Fine-tuning the position of the H point of the front human body model and the torso inclination angle, and returning to step (2).

[0016] In some embodiments of the present application, the position determination process of the backrest and headrest of the front seat is as follows:

[0017] (21) Setting the initial position of the H point of the front human body model and the torso inclination angle;

[0018] (22) Determining the position of the accelerator pedal and the front carpet;

[0019] (23) Positioning the foot point AHP of the front human body model on the specified position surface of the carpet, adjusting the front human body model so that the foot point BOF is positioned on the accelerator pedal surface, coinciding the H point of the front seat with the H point of the front human body model, adjusting the inclination angle of the backrest of the front seat so that the seat backrest matches the torso of the front human body model, and determining the position of the backrest and headrest of the front seat.

[0020] In some embodiments of the present application, the position determination method of the left eye point and the right eye point of the human body model on the driver's seat is as follows:

[0021] Taking the position of the H point of the human body model on the driver's seat as the reference, the left eye point and the right eye point of the human body model on the driver's seat are plotted.

[0022] In some embodiments of the present application, the position determination method of the inside rearview mirror is as follows:

[0023] Determining the inside rearview mirror lens plane where the inside rearview mirror lens is located, and performing symmetry on the left and right eye points through the inside rearview mirror lens plane to obtain the left eye symmetric point and the right eye symmetric point;

[0024] Extracting the transparent area boundary of the rear windshield, scaling the transparent area boundary based on the left symmetric eye point and the right symmetric eye point respectively to obtain the scaled boundary, connecting the transparent area boundary of the rear windshield and the scaled boundary to obtain the left eye point field of view envelope surface and the right eye point field of view envelope surface observable through the transparent area of the rear windshield, merging the left eye point field of view envelope surface and the right eye point field of view envelope surface to obtain the binocular field of view envelope surface, and adjusting the position and attitude of the inside rearview mirror so that the binocular envelope surface meets the requirements of the indirect field of view regulation.

[0025] In some embodiments of the present application, the initial position determination process of the backrest and headrest of the rear seat is as follows:

[0026] After determining the position of the rear carpet, the point AHP of the rear human body model is positioned on the designated position surface of the carpet, the H point of the rear seat is coincided with the H point of the rear human body model, the initial inclination angle of the back of the human body model is set, the inclination angle of the back of the rear seat is adjusted so that the seat back matches the torso of the human body model, and the initial positions of the back and headrest of the rear seat are determined.

[0027] In some embodiments of the present application, the determination method of the blocking area of the back and headrest of the rear seat on the rear windshield is as follows:

[0028] According to the left and right symmetrical eye points of the front human body model on the driver's seat, the outer contour boundaries of the back and headrest of the rear seat are scaled, the outer contour boundaries of the back and headrest of the rear seat are connected with the scaled boundaries, respectively, to obtain the left eye point seat back and headrest blocking envelope and the right eye point seat back and headrest blocking envelope, and the left eye point rear seat back and headrest blocking envelope and the right eye point rear seat back and headrest blocking envelope are combined to obtain the double eye rear seat back and headrest blocking envelope, and the double eye rear seat back and headrest blocking envelope is intersected with the rear windshield, and the intersection part is the blocking area of the rear seat on the rear windshield.

[0029] In some embodiments of the present application, if the blocking area is greater than the set blocking area threshold, the height of the H point of the rear human body model and / or the inclination of the back, the position of the rear windshield are adjusted so that the blocking area is less than the set blocking area threshold.

[0030] In some embodiments of the present application, the position optimization method of the side window glass of the rear passenger is as follows:

[0031] The difference between the lower edge height of the rear side window glass and the height of the H point of the rear human body model is calculated, if the difference is less than the set difference threshold, if the difference is greater than the set difference threshold, the lower edge height of the side window glass is lowered, wherein the height of the H point of the rear human body model is lower than the lower edge height of the rear side window glass.

[0032] The automobile second-row human body height checking method provided by the embodiments of the present application optimizes the observation field of view of the inside rearview mirror in the rear and the side field of view of the rear passenger by adjusting the relative position relationship among the front seat, the rear seat, the inside rearview mirror, the rear windshield and the rear side window glass, reduces the probability of causing changes due to poor field of view problems in the later real vehicle verification, and fully meets the use demand of the user for the position of the second-row passenger. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without any creative effort based on these drawings should fall within the scope of the present application.

[0034] Figure 1 The flowchart of the vehicle second-row human height checking method provided by the embodiment of the present application is as follows:

[0035] The above drawings have shown the specific embodiments of the present application, and the following will have a more detailed description. These drawings and the text description are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort should fall within the scope of the present application.

[0037] Unless otherwise defined, all the technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0038] Figure 1 The flowchart of the vehicle second-row human height checking method provided by the embodiment of the present application is as follows:

[0039] (1) determining the initial positions of the rearview mirror, rear windshield and rear-row side window glass in the vehicle;

[0040] In the embodiment of the present application, the method for determining the initial positions of the rearview mirror, rear windshield and rear-row side window glass in the vehicle is as follows:

[0041] An existing vehicle of the same type as the current development vehicle is selected, the reverse mapping data of the existing vehicle cabin is obtained, the positions of the rearview mirror, rear windshield and side window glass in the vehicle are read from the reverse mapping data, and the initial positions of the rearview mirror, rear windshield and rear-row side window glass in the current development vehicle are determined based on the positions of the rearview mirror, rear windshield and side window glass in the existing vehicle.

[0042] (2) determining the positions and attitudes (referred to as positions and postures) of the rearview mirror based on the positions of the H points and the torso inclination angles of the front-row human body model, and determining the positions and postures of the headrest and the backrest of the front-row seat based on the positions of the left eye point and the right eye point of the front-row human body model on the driver seat;

[0043] In the embodiment of the present application, the position determination process of the backrest and headrest of the front seat in the vehicle coordinate system is as follows:

[0044] (21) Set the initial position of the H point of the front seat model and the torso inclination angle, and of course, the H point position and torso inclination angle of the front seat model in the reverse mapping data of the similar existing vehicle model can also be referred to for setting;

[0045] (22) Read the positions of the accelerator and the front carpet from the reverse mapping data of the existing vehicle model;

[0046] (23) Call the SAE 2D human model, position the heel point AHP of the front seat model on the specified position surface of the carpet, adjust the front seat model so that the heel point BOF is positioned on the accelerator pedal surface, make the H point of the front seat coincide with the H point of the front seat model, adjust the inclination angle of the backrest of the front seat so that the seat backrest matches the torso of the front seat model, and thus determine the position of the backrest and headrest of the front seat in the vehicle coordinate system.

[0047] In the embodiment of the present application, the position determination method of the left eye point and the right eye point of the front seat model on the driver's seat is as follows:

[0048] With the H point position of the front seat model on the driver's seat as the reference, the left eye point and the right eye point of the driver's seat model are drawn, that is, after shifting 635 mm in the Z direction (vertically upward) at the H point, shift 32.5 mm in the Y direction (horizontally) to both sides respectively to form the left eye point and the right eye point of the human model on the driver's seat.

[0049] In the embodiment of the present application, the position and attitude determination method of the inner rearview mirror in the vehicle coordinate system is as follows:

[0050] Determine the inner rearview mirror lens plane where the inner rearview mirror lens is located, and perform symmetry on the left and right eye points through the inner rearview mirror lens plane to obtain the left eye symmetric point and the right eye symmetric point;

[0051] Extract the transparent area boundary of the rear windshield, scale the transparent area boundary based on the left symmetric eye point and the right symmetric eye point respectively to obtain the scaled boundary, connect the transparent area boundary of the rear windshield and the scaled boundary to obtain the left eye point field of view envelope surface and the right eye point field of view envelope surface that can be observed through the transparent area of the rear windshield, combine the left eye point field of view envelope surface and the right eye point field of view envelope surface to obtain the binocular field of view envelope surface, and adjust the position and attitude of the inner rearview mirror so that the binocular envelope surface can contain the ground 60 meters away from the H point of the driver's seat model and 20 meters wide (indirect field of view regulation requirement), thus the position and attitude of the inner rearview mirror lens in the vehicle coordinate are preliminarily determined.

[0052] (3) determining the initial position of the H point of the rear seat model based on the relative position of the H points of the front and rear seat models, and further determining the initial position of the backrest and headrest of the rear seat in the vehicle coordinate system;

[0053] In the embodiment of the present application, the initial position of the backrest and headrest of the rear seat is determined as follows:

[0054] The SAE 2D human body model is called, the position of the rear carpet is read from the reverse mapping data of the existing vehicle model, the point AHP of the rear seat model is positioned on the specified position surface of the carpet, the H point of the rear seat is coincided with the H point of the rear seat model, the initial inclination angle of the back of the human body model is set, the inclination angle of the backrest of the rear seat is adjusted to match the seat backrest with the torso of the human body model, and the initial position of the backrest and headrest of the rear seat is determined.

[0055] (4) determining the blocking area of the backrest and headrest of the rear seat on the rear windshield when the human body model on the front driver's seat observes the rear windshield through the inside rearview mirror, and reducing the blocking area by adjusting the H point position and / or the torso inclination angle of the rear seat model and the position of the rear windshield;

[0056] According to the left and right symmetrical eye points of the front seat model on the driver's seat, the backrest and headrest outer contour boundaries of the rear seat are scaled respectively by using the reflection principle of the lens, the backrest and headrest outer contour boundaries of the rear seat are connected with the scaled boundaries to obtain the left eye point seat backrest and headrest blocking envelope and the right eye point seat backrest and headrest blocking envelope respectively, the left eye point rear seat backrest and headrest blocking envelope and the right eye point rear seat backrest and headrest blocking envelope are combined to obtain the double eye rear seat backrest and headrest blocking envelope, the double eye rear seat backrest and headrest blocking envelope is intersected with the rear windshield, and the intersection part is the blocking area of the rear seat on the rear windshield. If the blocking area is greater than the set blocking area threshold, the H point height and / or the torso inclination angle of the rear seat model and the position of the rear windshield are adjusted to make the blocking area less than the set blocking area threshold, wherein the area threshold is set as the blocking area of the rear seat on the rear windshield in the existing vehicle of the same type.

[0057] (5) optimizing the position of the rear side window based on the H point height of the rear seat model to make the side window view of the rear passenger better.

[0058] The difference between the lower edge height of the rear side window and the height of the H point of the rear human body model is calculated, if the difference is less than a set difference threshold, it is determined that the side window field of view is at a dominant level, if the difference is greater than the set difference threshold, the lower edge height of the side window is lowered to optimize the side window field of view of the rear passenger, since the height of the H point of the rear human body model is lower than the lower edge height of the rear side window, the closer the height of the H point of the rear human body model to the lower edge height of the rear side window, the better the side window field of view of the rear passenger, and the difference threshold is set based on the difference between the lower edge height of the rear side window and the height of the H point of the rear human body model in the same type of existing vehicle.

[0059] In the present application, the relative position relationship among the front seat, the rear seat, the inside rearview mirror, the rear windshield and the rear side window is adjusted by the above steps (1) to (5) to optimize the observation field of view of the inside rearview mirror in the rear and the side field of view of the rear passenger.

[0060] Since the position of the rear seat backrest and headrest and the position of the inside rearview mirror are first determined based on the H point position of the front human body model, the position of the rear seat backrest and headrest is then optimized based on the blocking area of the rear seat backrest and headrest on the rear windshield when the rear windshield is observed from the inside rearview mirror, and finally the position of the rear side window is determined. Therefore, the present application can also adjust the position of the front seat backrest and headrest by fine-tuning the H point position and the torso inclination angle of the front human body model, and the relative position relationship among the front seat, the rear seat, the inside rearview mirror, the rear windshield and the rear side window is adjusted adaptively based on the above steps (1) to (5). Based on this, after step (5), there is also:

[0061] (6) fine-tune the H point position and the torso inclination angle of the front human body model, and return to step (2) until the observation field of view of the inside rearview mirror in the rear and the side field of view of the rear passenger are better than those of the same type of existing vehicle or reach a set standard.

[0062] In addition, it should be noted that the positions involved in the present application, such as the position of the inside rearview mirror, the position of the rear windshield, the position of the rear side window, the position of the rear seat backrest and headrest, and the position of the front seat backrest and headrest, are all positions in the vehicle coordinate system.

[0063] The automobile two-row human body height checking method provided by the embodiment of the present application optimizes the observation field of view of the inside rearview mirror in the rear and the side field of view of the rear passenger by adjusting the relative position relationship among the front seat, the rear seat, the inside rearview mirror, the rear windshield and the rear side window, reduces the probability of making changes due to poor field of view problems in later real vehicle verification, and fully meets the use requirements of users for the position of the two-row passengers.

[0064] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the application cover any and all variations of the application that come within the scope of the

[0065] It is understood that the application is not limited to the precise construction herein disclosed and shown in the drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the claims that follow.

Claims

1. A method for checking the height of passengers in the second row of a vehicle, characterized in that: The method is specifically as follows: (1) Determine the initial positions of the interior rearview mirror, rear windshield, and rear side windows; (2) Determine the position of the front seat backrest and headrest based on the H-point position and torso inclination angle of the front human body model, and determine the position of the interior rearview mirror based on the left and right eye points of the human body model in the driver's seat; (3) Based on the relative positions of the H points of the front and rear human models, the initial position of the H point of the rear human model is obtained, and the initial positions of the backrest and headrest of the rear seat are determined; (4) Determine the area of ​​the rear windshield blocked by the backrest and headrest of the rear seat when the mannequin in the driver's seat looks through the rearview mirror. Reduce the blocked area by adjusting the H-point position and / or torso tilt angle of the rear mannequin and the position of the rear windshield. (5) Optimize the rear side window glass position based on the H-point height of the rear human body model.

2. The method for verifying the height of passengers in the second row of a vehicle according to claim 1, wherein: After step (5), the method further includes: (6) Fine-tune the H-point position and torso tilt angle of the front-row human body model and return to step (2).

3. The method for verifying the height of passengers in the second row of a vehicle according to claim 1, wherein: The process for determining the position of the front seat backrest and headrest is as follows: (21) Setting the initial position of the H point and the torso inclination angle of the front row human body model; (22) Determine the position of the throttle and front carpet; (23) Position the heel point AHP of the front row human model on the designated position surface of the carpet, adjust the front row human model so that the footrest BOF is positioned on the accelerator pedal surface, make the H point of the front seat coincide with the H point of the front row human model, adjust the inclination angle of the front seat backrest so that the seat backrest matches the torso of the front row human model, and determine the position of the front seat backrest and headrest.

4. The method for verifying the height of passengers in the second row of a vehicle according to claim 1, wherein: The method for determining the positions of the left and right eye points of the human model in the driver's seat is as follows: Based on the H point position of the human body model in the driver's seat, draw the left eye point and right eye point of the human body model in the driver's seat.

5. The method for checking the height of passengers in the second row of a vehicle as claimed in claim 1, characterized in that: The method for determining the position of the rearview mirror is as follows: Determine the inner rearview mirror lens plane where the inner rearview mirror lens is located, and symmetrically align the left and right eye points of the human body through the inner rearview mirror lens plane to obtain the left eye point and the right eye symmetrical eye point; Extract the transparent area boundary of the rear windshield, scale the transparent area boundary based on the left symmetrical eyepoint and the right symmetrical eyepoint to obtain the scaled boundary, connect the transparent area boundary of the rear windshield and the scaled boundary to obtain the left eyepoint field of view envelope surface and the right eyepoint field of view envelope surface observable through the transparent area of ​​the rear windshield, merge the left eyepoint field of view envelope surface with the right-left eyepoint field of view envelope surface to obtain the binocular field of view envelope surface, and adjust the position and posture of the rearview mirror so that the binocular field of view envelope surface meets the requirements of the indirect field of view regulations.

6. The method for checking the height of passengers in the second row of a vehicle as claimed in claim 1, characterized in that: The initial position determination process of the rear seat backrest and headrest is as follows: Determine the position of the rear carpet, position the heel point AHP of the rear human model on the specified position surface of the carpet, align the H point of the rear seat with the H point of the rear human model, set the initial inclination angle of the human model's back, adjust the inclination angle of the rear seat backrest so that the seat back matches the human model's torso, and determine the initial position of the rear seat backrest and headrest.

7. The method for verifying the height of passengers in the second row of a vehicle as claimed in claim 1, characterized in that: The method for determining the area blocked by the rear seat backrest and headrest on the rear windshield is as follows: According to the left and right symmetrical eye points of the front-row human model in the driver's seat, the outer contour boundaries of the rear seat backrest and headrest are scaled respectively, and the outer contour boundaries of the rear seat headrest and backrest are connected with the scaled boundaries to obtain the left eye point seat backrest and headrest occlusion envelope surface and the right eye point seat backrest and headrest occlusion envelope surface, respectively. The left eye point rear seat backrest and headrest occlusion envelope surface and the right eye point rear seat backrest and headrest occlusion envelope surface are merged to obtain the binocular rear seat backrest and headrest occlusion envelope surface. The binocular rear seat backrest and headrest occlusion envelope surface is intersected with the rear windshield, and the intersection is the occlusion area of ​​the rear seat on the rear windshield.

8. The method for verifying the height of passengers in the second row of a vehicle as claimed in claim 1, characterized in that: If the blocked area is larger than the set blocking area threshold, the H point height and / or back inclination and rear windshield position of the rear human body model are adjusted to make the blocked area smaller than the set blocking area threshold.

9. The method for verifying the height of passengers in the second row of a vehicle as claimed in claim 1, characterized in that: The method for optimizing the position of the rear passenger side window glass is as follows: The difference between the lower edge height of the rear side window glass and the height of the H point of the rear human model is calculated. If the difference is less than the set difference threshold, the lower edge height of the side window glass is lowered if the difference is greater than the set difference threshold. The height of the H point of the rear human model is lower than the lower edge height of the rear side window glass.

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