CN112504188B - Method for generating human body model - Google Patents
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- CN112504188B CN112504188B CN202011299562.2A CN202011299562A CN112504188B CN 112504188 B CN112504188 B CN 112504188B CN 202011299562 A CN202011299562 A CN 202011299562A CN 112504188 B CN112504188 B CN 112504188B
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- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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Abstract
The invention discloses a method for generating a human body model, which is characterized in that a tested person is selected based on a Chinese human body height database; collecting three-coordinate information of a joint point of each tested person, length information of joint size and boundary size information; and fitting and constructing a human body size model of the Chinese human body based on the three-coordinate information of the joint points, the length information of the joint sizes and the boundary size information. The invention can effectively establish a human body database which accords with the Chinese situation, meets the development requirement of the vehicle type, really realizes the design and development based on Chinese users and improves the product satisfaction.
Description
Technical Field
The invention belongs to the technical field of automobile design, and particularly relates to a method for generating a human body model.
Background
The ultimate purpose of all automobile development is to facilitate the driving and use of passengers, including the operation convenience of parts, driving vision, riding space, getting on and off convenience and the like. All the above design criteria need to be developed based on the human body model and its corresponding human body size.
At present, human body models and sizes are mainly based on SAE human body size standards based on European and American human bodies, however, as is well known, European and American human bodies have great differences with Chinese human bodies, no matter the absolute height of the body or the proportional size of each joint size, so the human body models and sizes are designed completely according to the SAE standards and are unscientific or incomprehensive. In addition, the national standard of the human body size in China is GB10000-1988, which has been more than 30 years to date, and the state of the people is not met for a long time, and the people cannot be referred to.
Disclosure of Invention
Aiming at the problems in the background art, the invention aims to provide a method for generating a human body model, which can effectively establish a human body database conforming to the situation of China, meet the development requirement of vehicle types, really realize the design and development based on Chinese users and improve the product satisfaction.
In order to achieve the aim, the invention discloses a method for generating a human body model, which is characterized in that a tested person is selected based on a Chinese human body height database; collecting three-coordinate information of a joint point of each tested person, length information of joint size and boundary size information; and fitting and constructing a human body size model of the Chinese human body based on the three-coordinate information of the joint points, the length information of the joint sizes and the boundary size information.
In a preferred embodiment of the invention, the selection method of the tested person comprises the following steps of firstly, selecting the height information of a human body with a certain sample size, wherein the male-female ratio is 1: 1, the height is in a normal distribution rule; step two, in the sample size, the height with the height higher than 95% is taken as the 95-percentile height, the height with the height higher than 50% is taken as the 50-percentile height, and the height with the height higher than 5% is taken as the 5-percentile height; and step three, selecting the detected people according to the height of 95 percent, the height of 50 percent and the height of 5 percent respectively.
In a preferred embodiment of the invention, the method for acquiring the three-coordinate information of the joint points comprises the following steps of firstly, wearing a test suit by a tested person, wherein the test suit is provided with a position sensor for acquiring the three-coordinate information of the joint points of the human body; step two, the tested person ensures that only one human body joint point moves each time, and the position sensor records the movement track of the human body joint point movement; and step three, acquiring the rotation center of the movable human body joint point based on the motion track of the human body joint point, wherein the three-coordinate information of the center is the three-coordinate position information of the human body joint point.
In a preferred embodiment of the invention, the position sensors on the test garment include a foot sensor, a lower leg sensor, a thigh sensor, a backrest sensor, an upper arm sensor, a lower arm sensor and a hand sensor.
In a preferred embodiment of the invention, the foot sensor is positioned at the side of the heel point of the human body, the shank sensor is positioned at the side of the lower part of the shank of the human body, the thigh sensor is positioned at the side of the front part of the thigh of the human body, the backrest sensor is positioned at the side of the upper part of the back of the human body, the upper arm sensor is positioned at the side of the lower part of the upper arm of the human body, the forearm sensor is positioned at the side of the front part of the forearm of the human body, and the hand sensor is positioned at the side of the palm gripping point of the human body.
In a preferred embodiment of the invention, the method for acquiring the length information of the joint size comprises the following steps of firstly, wearing a test suit by a tested person, wherein the test suit is provided with a position sensor for acquiring three-coordinate information of a human body joint point; step two, the tested person ensures that only one human body joint point moves each time, and the position sensor records the movement track of the human body joint point movement; step three, acquiring the rotation center of the movable human body joint point based on the motion track of the human body joint point, wherein the three-coordinate information of the center is the three-coordinate information of the human body joint point; and step four, determining the foot treading length, the shank length, the thigh length, the backrest length, the upper arm length, the forearm length and the hand grasping length based on the three-coordinate information of all human body joint point activities.
In a preferred embodiment of the invention, the method for acquiring the boundary dimension information comprises the following steps of firstly, wearing a test suit by a tested person, wherein the test suit is provided with a position sensor for acquiring three-coordinate information of human body joint points; and a second step of acquiring the boundary size based on the position sensor while the occupant maintains the upright seating posture.
In a preferred embodiment of the invention, the boundary dimensions include measurements of foot length, knee-to-sole distance, knee-to-waist distance, hip-to-head height.
The invention also discloses a device for measuring the size of the human body, which comprises a three-dimensional frame, a camera for capturing the position of the position sensor in real time, an adjustable seat and a test garment for acquiring the information of each joint point of a person to be measured, wherein the position sensor is arranged on the test garment.
In a preferred embodiment of the present invention, the adjustable seat comprises a seat base, the seat base is connected with a vertically arranged seat height adjuster, the seat height adjuster is hinged with a seat cushion through a seat cushion angle adjuster, the front part of the seat cushion is provided with a seat cushion length adjusting block, and the rear part of the seat cushion is hinged with a backrest angle adjuster.
The invention has the beneficial effects that: aiming at the technical defect that the latest Chinese human body model and size are not available in the current industry, so that the design and development of the vehicle model based on Chinese passengers cannot be really realized, the invention establishes a set of method for quickly generating the human body model and a device for measuring the human body size.
Drawings
Fig. 1 is a general schematic view of an apparatus for measuring a size of a human body.
Figure 2 is a side view of the adjustable seat mechanism configuration.
Figure 3 is a schematic view of a human joint requiring measurement.
Fig. 4 is a schematic diagram of the body size to be measured.
FIG. 5 is a schematic diagram of the fitting process of the joint points of the human body.
Fig. 6 is a method for measuring and generating a chinese body size database based on the device.
In the figure, 1-space frame, 2-camera, 3-adjustable seat, 4-measure body, 5-position sensor, 6-computer processing unit, 10-seat base, 11-seat height adjuster, 12-cushion angle adjuster, 13-cushion, 14-cushion length adjuster, 15-back angle adjuster, 16-back, 20-sole point, 21-heel point, 22-ankle joint point, 23-knee joint point, 24-crotch joint point, 25-shoulder joint point, 26-elbow joint point, 27-wrist joint point, 28-palm grip point, 30-foot length, 31-knee-to-sole distance, 32-knee-to-waist distance, 33-hip-to-head height, 40-foot tread length, 41-shank length, 42-thigh length, 43-backrest length, 44-upper arm length, 45-shank length, 46-hand grip length, 100-foot sensor, 101-foot motion trajectory, 102-shank sensor, 103-shank motion trajectory, 104-thigh sensor, 105-thigh motion trajectory, 106-backrest sensor, 107-backrest motion trajectory, 108-upper arm sensor, 109-upper arm motion trajectory, 110-shank sensor, 111-shank motion trajectory, 112-hand sensor, 113-hand motion trajectory.
Detailed Description
The invention will now be described in further detail, including the preferred embodiments, with reference to the accompanying drawings and by way of illustration of some alternative embodiments of the invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "top", "bottom", "left", "right", "front", "rear", "middle", "inner", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In a preferred embodiment of the invention, the selection method of the tested person comprises the following steps of firstly, selecting the height information of a human body with a certain sample size, wherein the male-female ratio is 1: 1, the height is in a normal distribution rule; step two, in the sample size, the height with the height higher than 95% is taken as the 95-percentile height, the height with the height higher than 50% is taken as the 50-percentile height, and the height with the height higher than 5% is taken as the 5-percentile height; and step three, selecting the detected people according to the height of 95 percent, the height of 50 percent and the height of 5 percent respectively.
In a preferred embodiment of the invention, the method for acquiring the three-coordinate information of the joint points comprises the following steps of firstly, wearing a test suit by a tested person, wherein the test suit is provided with a position sensor for acquiring the three-coordinate information of the joint points of the human body; step two, the tested person ensures that only one human body joint point moves each time, and the position sensor records the movement track of the human body joint point movement; and step three, acquiring the rotation center of the movable human body joint point based on the motion track of the human body joint point, wherein the three-coordinate information of the center is the three-coordinate position information of the human body joint point.
In a preferred embodiment of the invention, the position sensors on the test garment include a foot sensor, a lower leg sensor, a thigh sensor, a backrest sensor, an upper arm sensor, a lower arm sensor and a hand sensor.
In a preferred embodiment of the invention, the foot sensor is positioned at the side of the heel point of the human body, the shank sensor is positioned at the side of the lower part of the shank of the human body, the thigh sensor is positioned at the side of the front part of the thigh of the human body, the backrest sensor is positioned at the side of the upper part of the back of the human body, the upper arm sensor is positioned at the side of the lower part of the upper arm of the human body, the forearm sensor is positioned at the side of the front part of the forearm of the human body, and the hand sensor is positioned at the side of the palm gripping point of the human body.
In a preferred embodiment of the invention, the method for acquiring the length information of the joint size comprises the following steps of firstly, wearing a test suit by a tested person, wherein the test suit is provided with a position sensor for acquiring three-coordinate information of a human body joint point; step two, the tested person ensures that only one human body joint point moves each time, and the position sensor records the movement track of the human body joint point movement; step three, acquiring the rotation center of the movable human body joint point based on the motion track of the human body joint point, wherein the three-coordinate information of the center is the three-coordinate information of the human body joint point; and step four, determining the foot treading length, the shank length, the thigh length, the backrest length, the upper arm length, the forearm length and the hand grasping length based on the three-coordinate information of all human body joint point activities.
In a preferred embodiment of the invention, the method for acquiring the boundary dimension information comprises the following steps of firstly, wearing a test suit by a tested person, wherein the test suit is provided with a position sensor for acquiring three-coordinate information of human body joint points; and a second step of acquiring the boundary size based on the position sensor while the occupant maintains the upright seating posture.
In a preferred embodiment of the invention, the boundary dimensions include measurements of foot length, knee-to-sole distance, knee-to-waist distance, hip-to-head height.
The invention also discloses a device for measuring the size of the human body, which comprises a three-dimensional frame, a camera for capturing the position of the position sensor in real time, an adjustable seat and a test garment for acquiring the information of each joint point of a person to be measured, wherein the position sensor is arranged on the test garment.
In a preferred embodiment of the present invention, the adjustable seat comprises a seat base, the seat base is connected with a vertically arranged seat height adjuster, the seat height adjuster is hinged with a seat cushion through a seat cushion angle adjuster, the front part of the seat cushion is provided with a seat cushion length adjusting block, and the rear part of the seat cushion is hinged with a backrest angle adjuster.
The invention decomposes and constructs the human body by the human body size: a total of 9 joint points, 7 joint sizes, and a total of 4 boundary sizes are covered; the 9 joint points are sole points, heel points, ankle joint points, knee joint points, crotch joint points, shoulder joint points, elbow joint points, wrist joint points and palm grasping points; the 7 joint sizes comprise foot treading length, shank length, thigh length, backrest length, upper arm length, forearm length and hand grasping length; the 4 boundary sizes comprise the length of feet, the distance from knees to soles, the distance from knees to waist and the height from buttocks to heads, a human body model suitable for modeling Chinese vehicle models is realized based on the 9 joint points, the 7 joint sizes and the 4 boundary sizes, and a set of device capable of quickly measuring the human body size is designed at the same time, and comprises a cushion with adjustable angle and height, a backrest with adjustable backrest angle, a motion track capturing device and the like; the method for generating the human body model is to perform fitting treatment based on the human body size measured by the measuring mechanism to finally generate the human body model which has different heights, is adjustable in each joint and accords with the driving working condition in the vehicle.
As shown in fig. 1, in which an overall schematic view of a human body dimension measuring apparatus is shown in a schematic manner, it mainly includes a solid frame 1, a camera 2 for capturing the position of a position sensor 5 in real time, an adjustable seat 3, and a measuring human body 4. In addition, the computer processing unit 6 is connected with the camera 2 and the position sensor 5 by wireless or wired connection, and is used for processing and outputting position coordinate information of the position sensor 5.
Referring to fig. 2, the structural configuration of the adjustable seat is described. From supreme down, the structure does in proper order: the seat base 10 provides support and is connected with the seat height adjuster 11; the seat height adjuster 11 is rotationally connected with the cushion angle adjuster 12; the cushion angle adjuster 12 is tightly connected with the cushion 13; the front part of the cushion 13 is provided with a cushion length adjusting block 14, so that the cushion length can be adjusted to meet the riding requirements of different statures; the seat cushion 13 and the seatback 16 are rotatably connected by a seatback angle adjuster 15. The above adjustable seat can satisfy the measurement of any sitting posture of the human body 4.
As shown in FIG. 3, the human body size joints to be measured are described, including nine joint points, namely a sole point 20, a heel point 21, an ankle joint point 22, a knee joint point 23, a crotch joint point 24, a shoulder joint point 25, an elbow joint point 26, a wrist joint point 27 and a palm grip point 28, and one of the prerequisites for generating the human body model is to determine three-coordinate information of each joint point.
As shown in fig. 4, the relevant dimensions of the human body to be measured are described, including in the driving or riding position: foot length (wearing shoes) 30, knee-to-sole distance 31, knee-to-waist distance 32, hip-to-head height, foot tread length 33; where foot length 30 is measured directly, knee-to-sole distance 31 and knee-to-waist distance 32 together define the knee boundary, and hip-to-head height defines the head boundary. The length dimensions of the joints include seven joint dimensions including a foot stepping length 40, a lower leg length 41, an upper leg length 42, a backrest length 43, an upper arm length 44, a lower arm length 45, and a hand gripping length 46.
As shown in FIG. 5, the determination and fitting of the joint point locations shown in FIG. 3 is described. Firstly, each moving part of the human body is provided with a position sensor, and the position sensors are distributed as follows: the foot sensor 100 is attached to the side of the heel point 20, the lower leg sensor 102 is attached to the side of the lower part of the lower leg, the upper leg sensor 104 is attached to the side of the front part of the upper leg, the back sensor 106 is attached to the side of the upper part of the back, the upper arm sensor 108 is attached to the side of the lower part of the upper arm, the lower arm sensor 110 is attached to the side of the front part of the lower arm, and the hand sensor 112 is attached to the side of the palm grip point 28. Secondly, the foot, the shank, the thigh, the backrest, the upper arm, the forearm and the hand are sequentially and independently rotated in combination with seat adjustment, so that the motion track of the position sensor is obtained. Further, the motion trajectory is fitted to obtain the rotation centers of the joints, i.e., the position coordinates of the nine joint points shown in fig. 3. Finally, the corresponding human body model can be drawn by combining the relevant sizes measured in the figure 4, and the angles of all joints can be adjusted so as to adapt to the riding requirements of different sitting postures of different vehicle types.
As shown in figure 6, the method for measuring and generating the Chinese human body size based on the set of device is explained.
Firstly, selecting height information of a human body with a certain sample size, wherein the proportion of male to female is close to 1: 1, and the height is in a normal distribution rule. In general, typical bodies for automobile design include four bodies of 95% male, 50% female and 5% female, so in the sample size, the height is arranged from short to high in order, and in the sample size, the height with the height higher than 95% is regarded as 95% height, the height with the height higher than 50% is regarded as 50% height, and the height with the height higher than 5% is regarded as 5% height. Further, assuming that the 95% height is H95, more persons to be tested are selected according to the height.
Secondly, the tested person wears shoes, wears clothes and attaches position sensors of all body parts according to the description of fig. 5, wherein the position sensors comprise a foot sensor 100, a lower leg sensor 102, a thigh sensor 104, a backrest sensor 106, an upper arm sensor 108, a lower arm sensor 110 and a hand sensor 112.
And thirdly, the foot rotates around the ankle joint, other joints are kept still, the motion track 101 of the foot position sensor is captured through a camera, and further, the position coordinate information of the ankle joint point 22 can be obtained through processing the motion track through a computer unit. Similarly, the position coordinate information of the knee joint point 23, the crotch joint point 24, the shoulder joint point 25, the elbow joint point 26, the wrist joint point 27, and the palm grip point 28 can be obtained in this order. In addition, the position coordinates of the ball point 20 and the heel point 21 can be directly obtained by the position sensors.
Fourth, the foot length 30, knee-to-sole distance 31, knee-to-waist distance 32, and hip-to-head height 33 are directly measured to determine the human foot, knee, back, and head boundaries.
And fifthly, integrating the joint points in the third step and the foot boundary, the knee boundary, the waist boundary, the head boundary and the like in the fourth step, and fitting and constructing the human body size model of the actually measured human body. And each joint angle of the model can be rotatably adjusted, so that the model can adapt to human body postures of different sitting postures, and is widely applied to the design and development of the general arrangement of the automobile.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and any modification, combination, replacement, or improvement made within the spirit and principle of the present invention is included in the scope of the present invention.
Claims (9)
1. A method of generating a mannequin, comprising: selecting a tested person based on a Chinese human height database; collecting three-coordinate information of a joint point of each tested person, length information of joint size and boundary size information; fitting and constructing a human body size model of the Chinese human body based on three-coordinate information of joint points, length information of joint sizes and boundary size information; the method for acquiring the three-coordinate information of the joint point comprises the following steps,
the method comprises the following steps that firstly, a tested person wears a test garment, and a position sensor used for collecting three-coordinate information of a human body joint point is arranged on the test garment;
step two, the tested person ensures that only one human body joint point moves each time, and the position sensor records the movement track of the human body joint point movement; and step three, acquiring the rotation center of the movable human body joint point based on the motion track of the human body joint point, wherein the three-coordinate information of the center is the three-coordinate position information of the human body joint point.
2. A method of generating a mannequin according to claim 1, wherein: the selection method of the tested person comprises the following steps,
step one, selecting height information of a human body with a certain sample size, wherein the ratio of male to female is 1: 1, the height is in a normal distribution rule;
step two, in the sample size, the height with the height higher than 95% is taken as the 95-percentile height, the height with the height higher than 50% is taken as the 50-percentile height, and the height with the height higher than 5% is taken as the 5-percentile height;
and step three, selecting the detected people according to the height of 95 percent, the height of 50 percent and the height of 5 percent respectively.
3. A method of generating a mannequin according to claim 1, wherein: the position sensors on the test garment comprise a foot sensor, a shank sensor, a thigh sensor, a backrest sensor, an upper arm sensor, a forearm sensor and a hand sensor.
4. A method of generating a mannequin according to claim 3, wherein: the foot sensor is located on the side of a heel point of a human body, the shank sensor is located on the side of the lower portion of a shank of the human body, the thigh sensor is located on the side of the front portion of a thigh of the human body, the backrest sensor is located on the side of the upper portion of the back of the human body, the upper arm sensor is located on the side of the lower portion of an upper arm of the human body, the forearm sensor is located on the side of the front portion of a forearm of the human body, and the hand sensor is located on the side of a palm gripping point of the human body.
5. A method of generating a mannequin according to claim 1, wherein: the method for acquiring the length information of the joint size includes the steps of,
the method comprises the following steps that firstly, a tested person wears a test garment, and a position sensor used for collecting three-coordinate information of a human body joint point is arranged on the test garment;
step two, the tested person ensures that only one human body joint point moves each time, and the position sensor records the movement track of the human body joint point movement;
step three, acquiring the rotation center of the movable human body joint point based on the motion track of the human body joint point, wherein the three-coordinate information of the center is the three-coordinate information of the human body joint point;
and step four, determining the foot treading length, the shank length, the thigh length, the backrest length, the upper arm length, the forearm length and the hand grasping length based on the three-coordinate information of all human body joint point activities.
6. A method of generating a mannequin according to claim 1, wherein: the method for acquiring the boundary dimension information includes the steps of,
the method comprises the following steps that firstly, a tested person wears a test garment, and a position sensor used for collecting three-coordinate information of a human body joint point is arranged on the test garment;
and a second step of acquiring the boundary size based on the position sensor while the occupant maintains the upright seating posture.
7. A method of generating a mannequin according to claim 6, wherein: boundary dimensions include measurements of foot length, knee-to-sole distance, knee-to-waist distance, hip-to-head height.
8. A method of generating a mannequin according to claim 1, wherein: the device for measuring the size of the human body comprises a three-dimensional frame, a camera for capturing the position of a position sensor in real time, an adjustable seat and a test garment for acquiring information of all joint points of a person to be measured, wherein the position sensor is arranged on the test garment.
9. A method of generating a mannequin according to claim 8, wherein: the adjustable seat comprises a seat base, wherein a vertically arranged seat height adjuster is connected to the seat base, the seat height adjuster is hinged to a seat cushion through a seat cushion angle adjuster, a seat cushion length adjusting block is arranged at the front part of the seat cushion, and a backrest angle adjuster is hinged to the rear part of the seat cushion.
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