CN114201813A - Automobile head space design method based on Chinese human body characteristics - Google Patents
Automobile head space design method based on Chinese human body characteristics Download PDFInfo
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Abstract
The invention discloses an automobile head space design method based on Chinese human body characteristics, which comprises the following steps: the method comprises the following steps of performing driver space calibration and human body arrangement related parameter calculation at the conceptual design stage of the whole vehicle: defining a coordinate system of the whole vehicle; defining the sitting height 1 and the width direction Y coordinate of a driver; calculating relevant parameters of human body arrangement, including heel point position, pedal point position and steering wheel position; based on RAMIS software, according to Chinese human body characteristics, 3D human body models of a large number of types of drivers are created; constraining the human body model according to the human body arrangement related parameters; simulating the actual driving condition to calculate the human body driving postures for N times, wherein N is more than the number of human body models; simultaneously extracting the head envelope of the driver to obtain a head inclusion set; considering a driving scene in daily life, translating the head envelope to obtain a head envelope translation set; and taking a union set of the head including set and the head envelope translation set to obtain final data, namely the minimum head space required by the driver.
Description
Technical Field
The invention relates to an automobile head space design method, in particular to an automobile head space design method based on Chinese human body characteristics, belongs to the technical field of vehicle design man-machines, and is mainly used for setting a driver head space in a vehicle concept design stage.
Background
Ergonomics originated in developed countries in europe and america, especially in the united states, and a great deal of mapping analysis and basic research has been conducted for further study of ergonomics, and many standards proposed in the united states, such as two-dimensional human body models, eye ellipses, head contours, etc., are adopted in many countries.
Currently, most countries continue to use related standards of SAE, but European and American human bodies and Chinese human bodies have obvious difference in body-size ratio due to influences of ethnic genes and regions, and data show that the ratio of the upper half body of Asian is 0.533H, the ratio of the upper half body of Europe is 0.531H, the ratio of the shoulder width of Asian is 0.222H, and the ratio of the shoulder width of Europe is 0.250H based on height H. Due to the difference of figure proportions, the completely applied European and American empirical formulas do not completely accord with Chinese human body characteristics and driving characteristics, so that the automobile space is not completely suitable for Chinese, the driving comfort and the vehicle usability are influenced, and the driving safety is possibly influenced.
Therefore, it is necessary to develop a design method of a head space of an automobile that fully considers the human body characteristics of china, so that the set head space of a driver is suitable for the human body characteristics and driving habits of chinese.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an automobile head space design method based on Chinese human body characteristics, wherein in the early stage of product development, Chinese human body models with different genders, different heights and different statures are created by combining the characteristics of RAMIS software, the head envelope of a driver is generated by combining the actual driving scenes (sudden braking, turning and the like), and the head envelope is translated in all directions by combining the daily driving scenes, so that the head space of the driver is set more truly. The invention has stronger guiding significance for the human-computer arrangement of the automobile, especially the definition of the whole automobile space in the early stage of product development.
The purpose of the invention is realized by the following technical scheme:
a design method of an automobile head space based on Chinese human body characteristics comprises the following steps:
firstly, carrying out driver space calibration and human body arrangement related parameter calculation at the conceptual design stage of the whole vehicle:
1.1) defining a coordinate system of the whole vehicle;
1.2) defining the sitting height H30-1 of the driver and the Y coordinate of the width direction;
1.3) calculating relevant parameters of human body arrangement, including a heel point position, a stepping point position and a steering wheel position;
secondly, based on the RAMIS software, a large number of 3D human body models of various types of drivers are created according to Chinese human body characteristics;
step three, constraining the human body model established in the step two according to the human body layout related parameters calculated in the step one; simulating the actual driving condition to calculate the human body driving postures for N times, wherein N is more than the number of human body models; simultaneously extracting the head envelope of the driver to obtain a head inclusion set;
step four, considering a driving scene in daily life, translating the head envelope obtained in the step three to obtain a head envelope translation set;
and step five, taking a union set of the head obtained in the step three and the head envelope translation set obtained in the step four, and obtaining final data, namely the minimum head space required by the driver.
Further, the step 1.2) is specifically as follows:
according to the positioning of the vehicle type and the bidding of the competitive product data, defining the sitting height H30-1 of the driver;
and defining the Y coordinate of the width direction of the driver according to the width of the whole vehicle.
Further, the step 1.3) is specifically as follows:
the position of the floor is determined in consideration of developing the vehicle overall height H101, the ground clearance H156, and the arrangement of the chassis members, and the position of the driver's heel point is determined in consideration of the carpet and mat thicknesses.
Further, the step 1.4) is specifically as follows:
calculating an X-direction distance L99-1 from a stepping point of a driver to a seat reference point by referring to an SAE empirical formula, and determining an X coordinate of a SgRP-1 reference point of the driver seat;
calculating an X-direction distance L99-1 from a stepping point of a driver to a seat reference point by referring to an SAE empirical formula, and determining an X coordinate of a SgRP-1 reference point of the driver seat;
calculating a backrest angle A40-1 of the driver seat by referring to an SAE empirical formula to determine a trunk angle of the driver in a driving state;
the position of the steering wheel is determined with reference to empirical formulas.
Further, the calculation formula of the distance L99-1 from the driver's stepping point to the seat reference point X is as follows:
L99-1＝913.7+0.672316×(H30-1)-0.00195530×(H30-1)2。
further, the driver seat back angle A40-1 is calculated as:
A40-1＝-0.024×H30+30±1.5°。
further, the calculation formula of the X coordinate of the steering wheel center SWC with respect to the step point is:
car: SWCx (-0.0029X (H30-1)2+0.9392*(H30-1)+500)±10
SUV：SWCx＝(-0.0029*(H30-1)2+0.9392*(H30-1)+515)±10
The calculation formula of the Z coordinate of the steering wheel center SWC with respect to the seat reference point is:
car: SWCz (-0.2674 × (H30-1) +443.96) ± 10
SUV：SWCz＝(-0.2674*(H30-1)+449)±10
The Y coordinate of the steering wheel center point SWC coincides with the driver seat reference point Y coordinate.
Further, the second step is specifically: based on RAMIS software, according to Chinese human body characteristics, at least considering factors of gender, height, body size proportion and waist circumference, 3D human body models of 90 types of drivers are created.
The invention has the following beneficial effects:
the core part of the invention is that 90 Chinese body models with different sexes, different heights and different statures are created based on the RAMIS software, and the driving postures of different human bodies are simulated by the RAMIS software in the early stage of product development to obtain head envelopes;
the invention combines the daily driving scenes (sudden braking, turning and the like) to carry out translation of the head in all directions in an enveloping way, thereby meeting the head space requirements of Chinese human bodies under the scenes of different heights, different statures and different vehicles.
The invention fully considers Chinese human body characteristics and driving behavior characteristics, sets the head space more suitable for Chinese human body, and accords with Chinese situation.
The invention has stronger guiding significance for the human-computer arrangement of the automobile, especially the definition of the whole automobile space in the early stage of product development.
Drawings
FIG. 1 is a flow chart of an automobile head space design method based on Chinese human body characteristics.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
A design method of an automobile head space based on Chinese human body characteristics comprises the following steps:
firstly, carrying out driver space calibration and human body arrangement related parameter calculation at the conceptual design stage of the whole vehicle:
1.4) defining a coordinate system of the whole vehicle;
1.5) defining the sitting height H30-1 of the driver and the Y coordinate of the width direction;
1.6) calculating relevant parameters of human body arrangement, including a heel point position, a stepping point position and a steering wheel position;
secondly, based on the RAMIS software, a large number of 3D human body models of various types of drivers are created according to Chinese human body characteristics;
step three, constraining the human body model established in the step two according to the human body layout related parameters calculated in the step one; simulating the actual driving condition to calculate the human body driving postures for N times, wherein N is more than the number of human body models; simultaneously extracting the head envelope of the driver to obtain a head inclusion set;
step four, considering a driving scene in daily life, translating the head envelope obtained in the step three to obtain a head envelope translation set;
and step five, taking a union set of the head obtained in the step three and the head envelope translation set obtained in the step four, and obtaining final data, namely the minimum head space required by the driver.
Further, the step 1.2) is specifically as follows:
according to the positioning of the vehicle type and the bidding of the competitive product data, defining the sitting height H30-1 of the driver;
and defining the Y coordinate of the width direction of the driver according to the width of the whole vehicle.
Further, the step 1.3) is specifically as follows:
the position of the floor is determined in consideration of developing the vehicle overall height H101, the ground clearance H156, and the arrangement of the chassis members, and the position of the driver's heel point is determined in consideration of the carpet and mat thicknesses.
Further, the step 1.4) is specifically as follows:
calculating an X-direction distance L99-1 from a stepping point of a driver to a seat reference point by referring to an SAE empirical formula, and determining an X coordinate of a SgRP-1 reference point of the driver seat;
calculating an X-direction distance L99-1 from a stepping point of a driver to a seat reference point by referring to an SAE empirical formula, and determining an X coordinate of a SgRP-1 reference point of the driver seat;
calculating a backrest angle A40-1 of the driver seat by referring to an SAE empirical formula to determine a trunk angle of the driver in a driving state;
the position of the steering wheel is determined with reference to empirical formulas.
Further, the calculation formula of the distance L99-1 from the driver's stepping point to the seat reference point X is as follows:
L99-1＝913.7+0.672316×(H30-1)-0.00195530×(H30-1)2。
further, the driver seat back angle A40-1 is calculated as:
A40-1＝-0.024×H30+30±1.5°。
further, the calculation formula of the X coordinate of the steering wheel center SWC with respect to the step point is:
car: SWCx (-0.0029X (H30-1)2+0.9392*(H30-1)+500)±10
SUV：SWCx＝(-0.0029*(H30-1)2+0.9392*(H30-1)+515)±10
The calculation formula of the Z coordinate of the steering wheel center SWC with respect to the seat reference point is:
car: SWCz (-0.2674 × (H30-1) +443.96) ± 10
SUV：SWCz＝(-0.2674*(H30-1)+449)±10
The Y coordinate of the steering wheel center point SWC coincides with the driver seat reference point Y coordinate.
Further, the second step is specifically: based on RAMIS software, according to Chinese human body characteristics, at least considering factors of gender, height, body size proportion and waist circumference, 3D human body models of 90 types of drivers are created.
Example 1
As shown in fig. 1, a method for designing a head space of an automobile based on chinese human body characteristics includes the following steps:
1. defining a coordinate system of the whole vehicle, and ensuring that development work of the vehicle type is carried out under the same coordinate system;
2. according to the positioning of the vehicle type and the bidding of the competitive product data, defining the driver sitting height H30-1, the sitting height range of the car is as follows: 220-300 mm; SUV seat height range: 300-400 mm;
3. defining a Y coordinate of a driver in the width direction according to the width of the whole vehicle, and generally setting the Y coordinate W20-1 of the driver to be 20% of the width of the whole vehicle;
4. determining the position of the floor, taking into account the development of the overall vehicle height (H101) and ground clearance (H156) and the arrangement of the chassis elements, determining the position of the driver's heel point, taking into account the carpet and mat thickness;
5. the X-direction distance (L99-1) from the stepping point of the driver to the seat reference point is calculated by referring to SAE empirical formula, and the X coordinate of the reference point (SgRP-1) of the driver seat is determined.
L99-1＝913.7+0.672316×(H30-1)-0.00195530×(H30-1)2
6. The calculated driver seat back angle (A40-1) determines the torso angle for the driver in the driving state, referring to the SAE empirical formula.
A40-1＝-0.024×H30+30±1.5°
7. The position of the steering wheel is determined with reference to an empirical formula:
calculation formula of X coordinate of steering wheel center SWC with respect to pedal point:
saloon car (200 < H30 < 300) SWCx (-0.0029X (H30-1)2+0.9392*(H30-1)+500)±10
SUV(300＜H30＜400)SWCx＝(-0.0029*(H30-1)2+0.9392*(H30-1)+515)±10
Calculation formula of Z coordinate of steering wheel center SWC with respect to seat reference point:
saloon car (200 < H30 < 300) SWCz (-0.2674 (H30-1) +443.96) ± 10
SUV(300＜H30＜400)SWCz＝(-0.2674*(H30-1)+449)±10
The Y coordinate of the steering wheel center point SWC is generally coincident with the driver seat reference point Y coordinate;
8. based on the RAMSIS software chinese body library, various factors such as the sex, height, body proportion (upper half length), waist circumference, etc. of the user are taken into comprehensive consideration, and 3D body models of the driver are created, and 90 body models can be created in total (see table 1).
Table 1: 3D human body model
| Sex | Height of a person | Body size ratio | Waist circumference |
| Male (Male) | Very tall | Long (Long) | Large (Thick) |
| Female (Female) | Tall (higher) | Medium (middle) | Medium (middle) |
| Medium (middle) | Short (Short) | Slim (thin) | |
| Short (shorter) | |||
| Very Short (Very Short) |
9. Constraining the 3D human body model based on the pedal position, the heel position, the steering wheel position and various parameters of a ceiling determined in the concept design stage, simulating the actual driving condition to calculate the human body driving posture for 90 times, and extracting the head envelope of a driver to obtain a head including set;
10. considering a driving scene in daily life, translating the head envelope extracted in the step 9 to obtain a head envelope translation set;
11. and (4) taking a union set of the head including set and the head envelope translation set obtained in the steps 9 and 10, and obtaining final data, namely the minimum head space required by the driver.
Claims (8)
1. A design method of an automobile head space based on Chinese human body characteristics is characterized by comprising the following steps:
firstly, carrying out driver space calibration and human body arrangement related parameter calculation at the conceptual design stage of the whole vehicle:
1.1) defining a coordinate system of the whole vehicle;
1.2) defining the sitting height H30-1 of the driver and the Y coordinate of the width direction;
1.3) calculating relevant parameters of human body arrangement, including a heel point position, a stepping point position and a steering wheel position;
secondly, based on the RAMIS software, a large number of 3D human body models of various types of drivers are created according to Chinese human body characteristics;
step three, constraining the human body model established in the step two according to the human body layout related parameters calculated in the step one; simulating the actual driving condition to calculate the human body driving postures for N times, wherein N is more than the number of human body models; simultaneously extracting the head envelope of the driver to obtain a head inclusion set;
step four, considering a driving scene in daily life, translating the head envelope obtained in the step three to obtain a head envelope translation set;
and step five, taking a union set of the head obtained in the step three and the head envelope translation set obtained in the step four, and obtaining final data, namely the minimum head space required by the driver.
2. The automobile head space design method based on Chinese human body characteristics according to claim 1, wherein the step 1.2) is specifically as follows:
according to the positioning of the vehicle type and the bidding of the competitive product data, defining the sitting height H30-1 of the driver;
and defining the Y coordinate of the width direction of the driver according to the width of the whole vehicle.
3. The automobile head space design method based on Chinese human body characteristics according to claim 1, wherein the step 1.3) is specifically as follows:
the position of the floor is determined in consideration of developing the vehicle overall height H101, the ground clearance H156, and the arrangement of the chassis members, and the position of the driver's heel point is determined in consideration of the carpet and mat thicknesses.
4. The automobile head space design method based on Chinese human body characteristics according to claim 1, wherein the step 1.4) is specifically as follows:
calculating an X-direction distance L99-1 from a stepping point of a driver to a seat reference point by referring to an SAE empirical formula, and determining an X coordinate of a SgRP-1 reference point of the driver seat;
calculating an X-direction distance L99-1 from a stepping point of a driver to a seat reference point by referring to an SAE empirical formula, and determining an X coordinate of a SgRP-1 reference point of the driver seat;
calculating a backrest angle A40-1 of the driver seat by referring to an SAE empirical formula to determine a trunk angle of the driver in a driving state;
the position of the steering wheel is determined with reference to empirical formulas.
5. The method as claimed in claim 4, wherein the calculation formula of the X-direction distance L99-1 from the driver's stepping point to the seat reference point is as follows:
L99-1＝913.7+0.672316×(H30-1)-0.00195530×(H30-1)2。
6. the automobile head space design method based on Chinese body features of claim 4, wherein the calculation formula of the back angle A40-1 of the driver's seat is as follows:
A40-1＝-0.024×H30+30±1.5°。
7. the method as claimed in claim 4, wherein the calculation formula of the X coordinate of the steering wheel center SWC with respect to the pedal point is:
car: SWCx (-0.0029X (H30-1)2+0.9392*(H30-1)+500)±10
SUV：SWCx＝(-0.0029*(H30-1)2+0.9392*(H30-1)+515)±10
The calculation formula of the Z coordinate of the steering wheel center SWC with respect to the seat reference point is:
car: SWCz (-0.2674 × (H30-1) +443.96) ± 10
SUV：SWCz＝(-0.2674*(H30-1)+449)±10
The Y coordinate of the steering wheel center point SWC coincides with the driver seat reference point Y coordinate.
8. The automobile head space design method based on Chinese human body characteristics according to claim 1, wherein the second step specifically comprises: based on RAMIS software, according to Chinese human body characteristics, at least considering factors of gender, height, body size proportion and waist circumference, 3D human body models of 90 types of drivers are created.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114851565A (en) * | 2022-04-12 | 2022-08-05 | 深圳市广德教育科技股份有限公司 | Method for manufacturing fitting model by using 3D printing technology |
| WO2023236415A1 (en) * | 2022-06-06 | 2023-12-14 | 一汽奔腾轿车有限公司 | Passenger vehicle driver steering wheel arrangement design method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114851565A (en) * | 2022-04-12 | 2022-08-05 | 深圳市广德教育科技股份有限公司 | Method for manufacturing fitting model by using 3D printing technology |
| CN114851565B (en) * | 2022-04-12 | 2024-03-29 | 深圳市广德教育科技股份有限公司 | Method for manufacturing fitting model by using 3D printing technology |
| WO2023236415A1 (en) * | 2022-06-06 | 2023-12-14 | 一汽奔腾轿车有限公司 | Passenger vehicle driver steering wheel arrangement design method |
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