JP2004042752A - Planning support program, method, and device and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a planning support program, a planning support method, a planning support device, and a recording medium capable of maing a plan of a vehicle efficiently and effectively. <P>SOLUTION: This planning support program is provided with an outer shape model construction program 63 for specifying an outer shape model having information related to outer shape of the vehicle, a standard model construction program 64 for specifying a standard model having information related to standard elements of the vehicle and information related to occupant's seated position and seated attitude, and a display program 65 for displaying the specified outer shape model and standard model based on the standard set in advance by superimposing to facilitate planning and verification of new vehicle. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a program, a method, an apparatus, and a recording medium for supporting planning of a vehicle.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when planning a vehicle, a two-dimensional drawing representing an outline of the vehicle has been created, and the quality of the plan has been determined based on the drawing. Then, when there was a change in the project, the drawing was created again from scratch.
[0003]
[Problems to be solved by the invention]
Therefore, in the conventional planning work, a great deal of labor is required to create a drawing, and there is a problem that considerable time and cost are required. Further, there is a problem that it is difficult to grasp the image of the vehicle in the two-dimensional drawing.
[0004]
Conventionally, in the drawing preparation process, there is a tendency to be dragged by factors with a small degree of freedom, such as the occupant's living space, to make the external shape that should have a large degree of freedom safe, and a vehicle with a novel design It was hard to be born.
[0005]
Further, even if a technique for automatically creating the outer shape of a vehicle has been proposed, if there are many outer specification values required for creating the outer shape, the input is extremely troublesome and impractical.
[0006]
The present invention has been made in order to solve the problems of the related art, and an object of the present invention is to provide a planning support program and a planning support method capable of efficiently and effectively planning a vehicle. , A planning support device and a recording medium.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems and achieve the object, a computer-readable recording medium recording a planning support program, a planning support method, and a planning support program for supporting a vehicle planning according to the present invention has a vehicle outer dimension. An input step of inputting external specification values defining the external parameters of the vehicle is read, and the external parameters included in the read external parameter groups are read out based on the external specification values and a predetermined rule. An exterior model construction step of constructing an exterior model representing the appearance of the vehicle by modifying the exterior space model, and a living space model representing an occupant's habitability by inputting occupant parameters relating to the seating state of the occupant in the vehicle A construction step, an outline model constructed in the outline model construction step, and an outline model constructed in the living space model construction step A display step of superimposing and displaying the living space model, and the external specification values are defined as coordinates of a definition point set at a specific position on the roof panel at the center in the vehicle width direction and the vehicle width direction. The coordinates of the definition point set at the center of the front and rearmost bumpers in the front-rear direction of the front bumper and the rear bumper, the coordinates of the definition point set at the position of the maximum protrusion in the vehicle width direction on the side of the vehicle body, and the vehicle width At the center of the direction, and the coordinates of the defined points set at the lower end of the front window glass, and in the external model building step, based on the coordinates of these defined points, the other vehicle It is characterized in that the coordinates of the part are automatically derived, and the outline model is constructed.
[0008]
Further, the planning support device according to the present invention includes an input unit for inputting an external specification value defining an external dimension of the vehicle, an external parameter group relating to an external shape of the vehicle, and an external unit included in the read external parameter group. The parameters are changed based on the external specification values and predetermined rules to input an external model construction means for constructing an external model representing the external appearance of the vehicle, and occupant parameters relating to the seating state of the occupant in the vehicle. A living space model constructing means for constructing a living space model representing the occupant's habitability, a contour model constructed by the contour model constructing means, and a living space model constructed by the living space model constructing means are superimposed and displayed. Display means, wherein the external specification values are the coordinates of a defined point set at a specific position on the roof panel at the center in the vehicle width direction, At the center in the width direction, and the coordinates of the definition point set at the position of the most protruding portion in the front-rear direction of the front bumper and the rear bumper, and the coordinates of the definition point set at the position of the most protruding portion in the vehicle width direction on the side of the vehicle body, The coordinates of the defined points set at the center in the vehicle width direction and at the lower end of the windshield include a value for determining, and the outer shape model constructing means includes, based on the coordinates of these defined points, The coordinates of the vehicle part are automatically derived to construct the outer shape model.
[0009]
Further, the planning support system according to the present invention includes: an input means for inputting an external specification value defining an external dimension of the vehicle; a database storing a plurality of external parameter groups relating to the external shape of the vehicle; Selecting means for selecting the external shape parameter group; and an external shape model for changing an external shape parameter included in the selected external shape parameter group based on the specification value and a predetermined rule to construct an external shape model representing the external appearance of the vehicle. Construction means, a living space model construction means for constructing a living space model representing the occupant's habitability by inputting occupant parameters relating to the seating state of the occupant in the vehicle, and a contour model constructed by the contour model constructing means. Display means for superimposing and displaying the living space model constructed by the living space model construction means. The external specification values are the center of the vehicle width direction and the coordinates of the defined point set at a specific position on the roof panel, the center of the vehicle width direction, and the most protruding portion with respect to the front-rear direction of the front bumper and the rear bumper. The coordinates of the definition point set at the position, the coordinates of the definition point set at the position of the most protruding part in the vehicle width direction on the side of the vehicle body, and the definition set at the center in the vehicle width direction and at the lower end of the windshield The coordinates of points, and a value for determining the coordinates.The outline model constructing means automatically derives coordinates of other vehicle parts based on the coordinates of these defined points, and constructs the outline model. It is characterized by.
[0010]
It is preferable that the external specification values further include a value for determining coordinates of a defined point set at a center in a front-rear direction of a wheel housing formed on a side surface of the vehicle body.
[0011]
The outline specification values are only values for determining the coordinates of the definition points, and in the outline model building step, the coordinates of other vehicle parts are automatically derived based on only the coordinates of the definition points. It is also preferable to construct the external model.
[0012]
【The invention's effect】
According to the present invention (claims 1, 5, 7, and 9), a contour model of a vehicle is read by reading a contour parameter group relating to the appearance of the vehicle and changing the contour parameters included in the read contour parameter group. Can be built. Further, a occupant parameter group relating to the seating state of the occupant in the vehicle is read, and the occupant parameters included in the read occupant parameter group are adjusted, whereby a living space model can be constructed. Then, the outline model and the living space model can be superimposed and displayed.
[0013]
Therefore, in reconsidering the plan, when reshaping the outer shape of the vehicle, the outer shape parameters may be changed, and when reshaping the internal space of the vehicle, the occupant parameters may be adjusted. , Can greatly improve work efficiency.
[0014]
That is, in the past, the external shape was determined on a two-dimensional drawing so as not to obstruct the driver's view and not to give the occupant a feeling of oppression. Since it is possible to construct independently of the space model and adjust the living space model, it is possible to effectively set the outer shape with a free idea without being restricted by the constraints of the internal space.
[0015]
For example, even if the vehicle outline includes the possibility of blocking the driver's view or giving the occupants a feeling of pressure, the seat angle and interior coloring etc. can be changed without changing the external model. By adjusting, these problems can be avoided. Furthermore, the occupant can be allowed to feel some oppression and crampedness. This is because interference between a person and an object poses a problem, and in the present invention, planning and verification can be performed with a completely different idea from the case of simply avoiding interference between an object and an object.
[0016]
Furthermore, since the exterior model constructed in the exterior model construction process and the living space model constructed in the living space model construction process can be displayed in a superimposed manner, it is possible to determine whether or not the occupant will fit in the vehicle interior space. It is possible to quickly verify the feasibility of packaging.
[0017]
In addition, since coordinates of definition points that are very important in defining a predetermined vehicle appearance can be directly set by external specification values, an external shape that directly expresses a user's intention without being affected by other external parts. Models can be built.
[0018]
According to the present invention (claims 2, 6, 8, and 10), the coordinates of the defined point set at the center in the front-rear direction of the wheel housing formed on the side surface of the vehicle body can be directly changed by the specification values. Therefore, in addition to the effect of the first aspect, the shape of the vehicle compartment can be determined independently of the positions of the front bumper and the rear bumper when constructing the external model.
[0019]
Further, according to the present invention (claim 3), since the coordinates of the other vehicle parts are automatically derived in relation to the defined points, the user can input the specification values very little.
[0020]
In detail, if there are many specification values to be input, the input operation becomes complicated, and there is a high possibility that the vehicle shape will be based on the established concept of the input user. Is reduced to a value considered to be the minimum necessary, so that the input operation is simplified, and a vehicle with a free idea can be planned without being bound by the established concept.
[0021]
Furthermore, since the coordinates of the definition point set at the center in the vehicle width direction and at the lower end of the front window glass can be directly changed according to the specification values, when constructing the external model, the cowl is independent of the roof panel position. The shape of the box or bonnet can be determined. Therefore, a shape model closer to the image of the input user can be constructed only by inputting the specification values.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment described below is an example as a means for realizing the present invention, and the present invention can be applied to a modification or a modification of the following embodiment without departing from the gist thereof. In this specification, the external model, the living space model, and the structural model are an aggregate of coordinate data representing the appearance of the vehicle, the states of the seat and the occupant, and the frame structure, respectively. The specification values refer to dimensions that determine the shape of the vehicle, and include, for example, overall height, overall width, and overall length, but do not include occupant parameters that determine the living space. The vehicle type refers to a vehicle type such as a sport, a sedan, and a truck, and the vehicle type refers to a brand (trademark) of a commercialized vehicle.
[0023]
(Overall system configuration)
First, the overall configuration of the planning support system according to the present embodiment will be described.
[0024]
FIG. 1 is a diagram illustrating a configuration of a planning support system 100 according to the present embodiment.
[0025]
The planning support system 100 in FIG. 1 includes a computer 1 as a planning support device connected to a network and a database server 2. Further, the computer 1 includes a CPU 11, a read only memory (ROM) 13, a random access memory (RAM) 14, an external storage unit 15, an input unit 16, a display unit 17, an image processing unit 18, and a communication unit 19, each of which is shown in FIG. , Are connected by a system bus 12.
[0026]
The CPU 11 executes arithmetic processing as a general computer and information processing for supporting vehicle planning.
[0027]
The ROM 13 stores at least a boot program for activating the computer system. The RAM 14 has a program area for temporarily storing a program running on the computer system and a data area for writing and reading data. In addition, the external storage unit 15 stores a program 60 (hereinafter, also referred to as a plan support program) for supporting plan verification of a new vehicle. Examples of the external storage unit 15 include a hard disk drive, a flexible disk drive, a magneto-optical disk drive, a CD-ROM drive, a CD-R drive, a CD-RW drive, and a DVD (DVD-ROM, DVD-R) drive. The device is applicable. In this case, when the planning support program is stored in a storage medium such as a CD-ROM that can be removed from each drive, and the computer 1 reads the program stored in the storage medium and executes various processes described below, Such a storage medium itself is included in the scope of the present invention.
[0028]
The input unit 16 is a device such as a keyboard or a mouse for inputting commands and data from the outside, and the display unit 17 outputs characters and image data calculated by the image processing unit 18 based on a control command from the CPU 11. Such as a liquid crystal display and a CRT. The image processing unit 18 is a device that performs arithmetic processing on image data to be output by the display unit 17, and the communication unit 19 is connected to a wireless or wired communication line (for example, the Internet network or a mobile phone network). Communication with the computer system or the database server 20 to remotely transmit and receive programs and data.
[0029]
FIG. 2 is a diagram illustrating data included in the computer 1 and the database server 2 included in the planning support system.
[0030]
As shown in FIG. 2, the database server 2 stores an external shape database 2a in which external parameter groups relating to a three-dimensional external shape of a vehicle are classified and stored for each vehicle type, and a structure relating to a three-dimensional structure and a cross-sectional shape of a skeleton of the vehicle. A structure database 2b in which parameter groups are similarly classified and stored for each vehicle type, and an occupant storing several types of occupant models defined by occupant sizes (standards for adults and children) according to domestic and overseas standards. It includes a database 2c and a completed product database 2d storing parameters of completed vehicles.
[0031]
The computer 1 creates a design table 1a including various specification values and occupant seating position information on a vehicle to be planned based on a user's input. Then, by accessing the database server 2 based on the design table 1a, reading out and deforming desired data (parameter group), three models called a reference model 1b, an outline model 1c, and a structural model 1d are constructed. Further, these three models are superimposed to construct an overall model 1e.
[0032]
In the design table 1a, an occupant sitting position (hip point) and a seat arrangement (the number of seats such as one-row, two-row, and three-row seats) are input as occupant parameters relating to the occupant's seating state in the vehicle. Then, based on the occupant parameters, the computer 1 combines the human model and the seat model read from the occupant database 2c and transforms them to construct a living space model 1f representing the occupant's habitability. The living space model 1f is not affected by the vehicle specification values input to construct the outer shape model 1c, and the outer shape model 1c and the living space model 1f are not deformed in conjunction with each other.
[0033]
In addition, a vehicle reference model 1g that defines the position of the living space model 1f in the vehicle is constructed from the total length, full width, total height, wheelbase, and the like of the vehicle input to the design table 1a. Furthermore, an eye point indicating the position of the driver's eyes and an upper end determined based on the driver's view to be secured at a minimum, and a cowl top point determined based on the input specification values are set at the lower end. A windshield model 1h is constructed. Then, the reference model 1b is constructed by combining the living space model 1f, the vehicle reference model 1g, and the windshield model 1h.
[0034]
The computer 1 can draw the reference model 1b in a three-dimensional space and display the reference model 1b on the display unit 17. In addition, using the input unit 16 such as a pointing device, the computer 1 , The seating posture of the occupant and the like can be adjusted.
[0035]
Further, the computer 1 selects and reads the external shape parameter group of the vehicle type from the external shape database 2a based on the vehicle type (one of hatchback, minivan, sedan, sports, open, truck) stored in the design table 1a. put out. Then, using various specifications (full length, full width, total height, wheelbase, front and rear overhangs) stored in the design table 1a, predetermined external parameters (coordinates of the tip position of the bumper, rooftop, etc.) included in the external parameter group are used. Are modified to construct a rough outline model 1c along the specifications. The computer 1 can draw the outer shape model 1c in a three-dimensional space and display it on the display unit 17, and can use the input unit 16 such as a pointing device to display the outer shape model 1c in the three-dimensional space. Can be transformed.
[0036]
Further, the computer 1 selects and reads out a structural parameter group from the structural database 2b based on the vehicle type and the vehicle skeleton configuration stored in the design table 1a. Then, using various specifications (cross-sectional shape, material, weight, strength, etc.) stored in the design table 1a, predetermined structural parameters (external shape of the skeleton appearing in the appearance or cross-sectional shape of the skeleton included in the structural parameter group) ) To construct a structural model that meets the specifications. Further, the computer 1 can draw the structural model 1d in a three-dimensional space and display it on the display unit 17.
[0037]
Further, the computer 1 can construct the entire model 1e by combining the constructed reference model 1b, outer model 1c, and structural model 1d, draw the entire model 1e in a three-dimensional space, and display it on the display unit 17. It is.
[0038]
Next, a program included in the computer 1 will be described.
[0039]
FIG. 40 is a diagram showing a configuration of a planning support program for realizing the planning support system of the present embodiment.
[0040]
The design table 1a can be created by, for example, spreadsheet software 40 operating on an operating system. The various models 1b, 1c, and 1d can be created by three-dimensional CAD software 50 that extracts and calculates values from a design table 1a created by spreadsheet software 40.
[0041]
That is, the planning support program 60 for realizing the present system includes a design table creation program 61 incorporated in the spreadsheet software 40, a reference model construction program 62, an external model construction program 63, and a structural model incorporated in the three-dimensional CAD software. And a construction program 64, a three-dimensional image generation and display program 65.
[0042]
The design table creation program 61 includes a function of displaying a graphical user interface that allows a user to input vehicle specifications and the like. Thereby, the user can easily input various specifications, the seating position of the occupant, the seating posture, and the like.
[0043]
Each of the various model construction programs 62 to 64 has a function of referring to the design table 1a created by the design table creation program 61. Further, based on the contents of the design table 1a, the occupant database 2c, the outline database 2a, the structure It has a function of reading out parameter groups included in the database 2c and automatically changing predetermined parameters.
[0044]
Here, it is assumed that the design table creation program and the other programs are executed on different software. However, the present invention is not limited to this. , Reference, outer shape, structural model construction function, image generation, and display function.
[0045]
FIG. 3 is a diagram showing an example of a display screen when the reference model constructed by the reference model construction program 62 is displayed on the display unit 17 by the display program 65.
[0046]
FIG. 4 is a diagram illustrating an example of a display screen when only the living space model is extracted from the reference model. Here, the living space model is a set of coordinate data having the origin at the center of the left front wheel. On the other hand, the vehicle reference model also has coordinate data with the same point as the origin, and is displayed in an overlapping manner as shown in FIG. 3 based on this origin.
[0047]
FIG. 5 is a diagram illustrating an example of a display screen when the external model constructed by the external model construction program 63 is displayed on the display unit 17 by the display program 65. The external model is defined by parameters such as the overall length, overall width, overall height, and wheelbase of the vehicle, and a plurality of vehicle types such as wagons and sedans. Three-dimensional image data as shown in FIG. Automatically generated and displayed by processing.
[0048]
FIG. 6 is a diagram illustrating an example of a display screen when the external model constructed by the structural model construction program 64 is displayed on the display unit 17 by the display program 65. The structural model is defined by parameters indicating a skeleton structure and parameters indicating a cross-sectional shape of each part such as a front pillar and a center pillar, which are input to the design table, and three-dimensional as shown in FIG. 6 from the input parameters. Image data is automatically generated by image processing and can be displayed.
[0049]
FIG. 7 shows an image display example of a completed model in which a reference model, an outline model, and a structure model are superimposed, and FIG. 8 shows an image display example of a case in which a reference model and a structure model are superimposed. Each model has a reference point, and is displayed as shown in FIGS. 7 and 8 by overlapping the reference points. The reference point for superimposition will be described in detail below in the section "Reference point for model superimposition display".
[0050]
By superimposing the reference model and the external model, it is possible to verify the packaging state (the occupant's head clearance and feeling of pressure) and visibility of the vehicle. Further, by superimposing and displaying the structural model, it is possible to verify the collision performance, the vehicle body rigidity, and the like, and to perform a detailed evaluation of the driver's view range and the like viewed from the vehicle interior.
[0051]
The vehicle reference model, the external model, and the structural model have common parameters, and are deformed in conjunction with each other due to the change. On the other hand, the living space model does not have the same parameters as the outline model and the structural model, and does not link even if the outline model or the structural model is changed. As a result, the external shape model can be constructed independently of the living space model, and the external shape can be effectively set with a free idea without being restricted by the constraints of the internal space. Conversely, it is possible to plan a living space with a free idea without being bound by the external shape.
[0052]
9 and 10 show other image display examples of the completed model in which the reference model, the external model, and the structural model are superimposed. Unlike the display example shown in FIG. 7, the external model is displayed semi-transparently in the display example shown in FIG. 9, and the external model is displayed completely transparently in the display example shown in FIG.
[0053]
In this example, since the input parameters such as the total height and the total length are too small to accommodate the living space model, the occupant's head protrudes from the outer shape of the vehicle. In these figures, only the interference part is displayed in a different color so that the interference state between the living space model and the external model can be clearly distinguished.
[0054]
As a result, it is possible to visually verify that the occupant's head clearance and the driver's visibility are not sufficient, and to change each model based on the verification result. That is, if the seating position and the sitting posture of the occupant determined by the living space model are unreasonable with respect to the cabin space set by the external model and the structural model, the seating position is displayed on the screen of FIG. Adjustments such as shifting, changing the sitting posture, and raising the roof position can be performed. Such adjustment processing will be described in detail in the column of <Local deformation rule>.
[0055]
In addition, as a method of discriminating and displaying the interference portion, in addition to displaying in different colors, a method of calling attention with an arrow or emitting a warning sound can be considered.
[0056]
(Program structure)
Hereinafter, functions of each program included in the planning support program 60 according to the present embodiment will be described.
[0057]
[Design table creation program]
The parameters input to the design table include the outer dimensions and vehicle type as outer parameters, the number of seats as passenger parameters, the in-vehicle dimensions and visibility conditions, tire wheel dimensions, under-floor dimensions, occupant placement conditions, and the like. is there.
[0058]
The parameters in the length direction and the vertical direction input in the following tables are all values for deriving the coordinate position of each part when the axle of the front wheel is set as the origin. The parameters in the width direction input in the following tables are based on the center plane of the vehicle. In other words, if all parameters are properly entered in the design table, the model of the vehicle outline, living space (occupants and seats), windshield, etc. will be placed on three-dimensional coordinates with the axle of the front wheels and the center plane of the vehicle as the origin. It is possible to draw.
[0059]
<Vehicle type selection>
FIG. 20 shows an example of a model & type selection interface included in the design table creation program 61. That is, it is a diagram illustrating a vehicle type selected when constructing an external model from this interface, and an interface for selecting a pillar configuration included in the structural model.
[0060]
A plurality of pillar configurations as structural parameter groups are prepared for each vehicle type in the database as shown in the figure.
[0061]
Preferably, the models include at least two of a minivan, a station wagon, and a sedan, and in this example, a total of six models including a hatchback, a minivan / wagon (station wagon), a sedan, a sport, an open, and a truck. Are divided into types.
[0062]
An outer shape parameter group (three-dimensional coordinate data constituting the outer shape of the vehicle) is stored in the database for each of these vehicle types, and selection of the vehicle type corresponds to selection of the outer shape parameter group as it is. Further, a structural parameter group (three-dimensional coordinate data constituting the skeleton) is stored in the database for each pillar configuration in the right column, and the selection of the vehicle type and the selection of the pillar configuration correspond to the selection of the structural parameter group as it is. .
[0063]
Here, the vehicle type is selected at the same time by selecting any of the pillar configuration icons shown in the right column. Of course, the interface may be such that the step of selecting the vehicle type and the step of selecting the pillar configuration can be performed independently. In any case, when the external shape parameter group (vehicle type) is selected, the structural parameter group (the pillar configuration corresponding to the vehicle type) of the same classification as the selected vehicle type is automatically selected from the structural database.
[0064]
Here, the pillar configuration is narrowed down by selecting the vehicle type. However, the pillar configuration that can be further selected according to a parameter (for example, the overall length) input in another input table may be narrowed down. good. In this case, the structure database stores the pillar configuration for each vehicle size.
[0065]
The pillar configuration will be specifically described. In FIG. 20, in the hatchback and the wagon, a front auxiliary pillar 204 is further provided between the front pillar 201 and the center pillar 202 based on a vehicle having a front pillar 201, a center pillar 202, and a rear pillar 203. A vehicle type having a rear auxiliary pillar 205 between the center pillar 202 and the rear pillar 203, and a vehicle type having auxiliary pillars 204 and 205 between the front pillar 201 and the center pillar 202 and between the center pillar 202 and the rear pillar 203 are defined. Have been.
[0066]
In the sedan, based on a vehicle having a front pillar 201, a center pillar 202, and a rear pillar 203, a vehicle having no center pillar 202 (hard top type) and a vehicle having a pillar 205 between the center pillar 202 and the rear pillar 203. Is defined.
[0067]
For sports and trucks, a vehicle type without the center pillar 202 is defined based on a vehicle type having the front pillar 201, the center pillar 202, and the rear pillar 203.
[0068]
In the open state, a vehicle type having only the front pillar 201 and a vehicle type having the front pillar 201 and the center pillar 202 are defined.
[0069]
In this way, by making it possible to select a model similar to the model to be planned, it is possible to reduce the number of steps required for the shape deformation of the external model, improve the verification accuracy, and improve the user's work efficiency.
[0070]
In addition, since one of a plurality of pillar configurations prepared for each vehicle type is selectively read to construct a structural model, the user can narrow down the structural parameter groups only by selecting the vehicle type. Efficiency can be improved.
[0071]
Although not shown here, an interface for inputting a seat configuration is also provided in association with the selected vehicle type. The interface may be, for example, a table for inputting the number of persons for each of the first to third columns. In that case, it is possible to input the number of seats with three numbers. For example, a numerical value such as (2,0,0) for two seats, (2,3,0) for a general five-seater, and (2,3,2) for a seven-seater Can be represented by
[0072]
Further, an interface for inputting the number of doors may be provided.
[0073]
<External dimensions>
FIG. 11 shows an example of an external dimension input interface included in the design table creation program 61. FIG. 11A is an input table of vehicle specification values, and FIGS. 11B and 11C are images of a vehicle front view and a side view showing a corresponding part of a parameter input in the input table. is there. Here, the vehicle specification values include the wheel base 1101, the overall width 1102, the overall height 1103, the front overhang 1105, the rear overhang 1106, the horizontal position 1107 of the cowl point CW, the vertical position 1108 of the cowl point CW, and the windshield inclination 1109. It is.
[0074]
In the vehicle specification values, the front overhang 1105 is the distance between the front end of the vehicle that projects forward from the front axle AF and the front axle AF, and the rear overhang 1106 is the position behind the vehicle that projects rearward from the rear axle RF. This is the distance between the end and the rear axle RF. The horizontal position 1107 of the cowl point CW is the horizontal distance between the center position of the lower end of the windshield in the vehicle width direction and the front axle AF, and the vertical position 1108 of the cowl point CW is the center position of the lower end of the windshield in the vehicle width direction. This is the vertical distance between the front axles AF. Furthermore, the windshield tilt 1109 is the tilt angle between the vertical line passing through the cowl point position and the windshield.
[0075]
The total length 1104 is automatically calculated by adding the wheel base 1101, the front overhang 1105, and the rear overhang 1106 (1104 = 1110 + 1105 + 1106). Note that the total height 1103 is not the height based on the ground contact surface GL2 when riding, but the height based on the ground contact surface GL1 when the vehicle is empty, but is basically based on GL2 other than the reference model and the total height. Is set.
[0076]
In addition, as the external dimensions, in addition to the above parameters, upper and lower end reference positions of the front bumper (common parameters for points C1 and D1 of the external model described later) predetermined by standards such as domestic and foreign collision safety standards, and the like. Input may be possible. In this case, bumper arrangement reference ranges corresponding to these positions are displayed (see FIG. 22C).
[0077]
≫Cowl point restrictions≪
FIG. 17 is a diagram illustrating restrictions on the horizontal position 1107 and the vertical position 1108 of the cowl point CW of the vehicle reference model. The horizontal position 1107 and the vertical position 1108 of the cowl point CW can be input in FIG. 11, but they cannot be completely arranged at arbitrary positions, and are restricted by the field of view.
[0078]
That is, as the first condition, among the visibility conditions input in FIG. 13, the first visibility condition must not interfere with the forward lower visibility field 1302.
[0079]
The second condition is that the dash panel must be located below the straight line forming a predetermined acute angle 1701 from the upper end position DP of the dash panel defined in FIG.
[0080]
<In-vehicle dimensions>
FIG. 12 shows an example of an in-vehicle dimension input interface included in the design table creation program 61. FIG. 12A is an input table of vehicle interior dimensions, and FIGS. 12B, 12C, and 12D are front-view images and side-view images for indicating corresponding portions of parameters input in the input tables. An image and a bottom view image. FIG. 12E is an image in which the periphery of the dash panel is displayed in a magnified view to show a dimension portion for determining the dash panel position.
[0081]
The dimensions that determine comfort in the vehicle can be divided into parameters relating to the front row occupant, parameters relating to the second row occupant, parameters relating to the third row occupant, and parameters relating to the dash panel. When there is no seat in the second and third rows, it is not necessary to input parameters relating to the occupants in the second and third rows. Here, it is assumed that the fact that the number of sheets is three is already input.
[0082]
Among these, the parameters relating to the front row occupant include the following.
1201: The crown position of the front row occupant (the length of the straight line extending upward from the front row hip point HP1 and inclined backward by a predetermined small angle with respect to the vertical direction)
1202: Vertical distance between the front row hip point HP1 and the cowl point CW
1203: Vertical distance between the front row hip point HP1 and the ground plane GL2 when riding
1204: Vertical distance between the front row hip point HP1 and the floor panel
1205: distance between the front row hip point HP1 and the vehicle width center W
• 1206: Front row torso angle
1207: Horizontal distance between the front axle AF and the upper end of the accelerator pedal
The following parameters are related to the second row occupant.
1208: the crown position of the second row occupant (the length of the straight line extending upward from the second row hip point HP2 and inclined backward by a predetermined minute angle with respect to the vertical direction)
1209: horizontal distance between the front row hip point HP1 and the second row hip point HP2
1210: Horizontal distance between the second row hip point HP2 and the second row occupant's heel. 1211: Vertical distance between the second row hip point and the floor panel.
1212: Vertical distance between the front row hip point HP1 and the second row hip point HP2
1213: Distance between the second row hip point and the center of the vehicle width
1214: 2nd row torso angle
Note that the driver's eye position (eye point) EP is automatically derived from the top position 1201 of the front row occupant.
[0083]
Further, the parameters related to the third row occupant include the following.
1215: The crown position of the third row occupant (the length of the straight line extending upward from the third row hip point HP3 and inclined backward by a predetermined small angle with respect to the vertical direction)
1216: horizontal distance between the second row hip point HP2 and the third row hip point 3rd
1217: vertical distance between the third row hip point HP3 and the floor panel
1218: distance between the third row hip point HP3 and the center of the vehicle width
1219: Vertical distance between the second row hip point HP2 and the third row hip point HP3
1220: 3rd row torso angle
1221: distance between the third row hip point HP3 and the heel of the third row occupant
The parameters related to the dash panel include the following.
* 1222: Horizontal distance between the front axle AF and the front end of the dash panel DP
1223: Horizontal distance between the front axle AF and the rear end of the dash panel DP
1224: Vertical distance between the front axle AF and the front end of the dash panel DP
By inputting the vehicle interior dimensions as described above, it is possible to individually set each seat position in the absolute space of the living space model with reference to the front row to third row hip points HP1 to HP3.
[0084]
Since the reference of the in-vehicle position of the living space model differs depending on which point is set as the origin, a difference occurs in the degree of overlap with the external model depending on the origin position.
[0085]
In other words, a point at which it is desired that interference between the living space model and the external model when overlapping with the external model is desired may be selected as the origin.
[0086]
≫How to determine hip points≫
In the interface of FIG. 12, the position of the driver's hip point HP1 in the height direction is defined by 1203, and the position in the width direction is defined by 1205, but a field for directly inputting the position (horizontal position) in the full length direction of the vehicle. Is not provided.
[0087]
Here, the position in the length direction is derived by calculation from other parameters directly input in FIG. 12, and a method thereof will be described below.
[0088]
FIG. 16 is a diagram illustrating a method for determining the horizontal position of the driver's hip point HP1.
[0089]
The horizontal distance 1207 between the front wheel axis AF, which is the origin, and the upper end position (ball point) of the accelerator pedal is defined by the table in FIG. The height 1204 of the driver's hip point HP1 from the heel point is also defined by the table in FIG. The present embodiment has a program configuration in which 1601 in the figure is derived by substituting 1204 into Z in the following equation.
[0090]
1601 = k1 + k2 × Z−k3 × Z²
Note that k1, k2, and k3 are predetermined coefficients. Here, the above equation is adopted from an empirical rule, but the present invention is not limited to this, and 1601 may be obtained by another equation, or can be directly input in the table of FIG. It may be a program configuration.
[0091]
<Visibility conditions>
FIG. 13 shows an example of a view condition input interface included in the design table creation program 61. FIG. 13A is an input table of visibility conditions to be ensured, and FIG. 13B is a vehicle internal side view image for indicating a portion corresponding to a parameter input in the input table.
[0092]
The parameters relating to the visibility condition include the following.
1301: Angle to be secured upward from the horizontal plane passing through the driver's eye point EP (front)
1302: Angle to be secured downward from the horizontal plane passing through the driver's eye point EP (front)
1303: Angle to be secured upward from the horizontal plane passing through the driver's eye point EP (backward)
1304: Angle to be secured downward from the horizontal plane passing through the driver's eye point EP (backward)
1301 automatically defines and displays the lowest position where the front header (the panel at the top of the windshield) can be placed. Similarly, the lowest position where the rear header (the panel at the upper end of the rear glass) can be arranged is automatically defined and displayed by 1303.
[0093]
<Tire wheel dimensions>
FIG. 14 shows an example of a tire and wheel specification input interface included in the design table creation program 61. FIG. 14A is an input table for inputting dimensions of tires and wheels, and FIGS. 14B and 14C are side views of the inside of the vehicle for indicating corresponding portions of parameters input in the input table. It is a visual image and a vehicle internal planar image. FIGS. 14D and 14E are side view images of the periphery of the wheel housing.
[0094]
The tire and wheel related dimensions input here include the following.
・ 1401: Tire outer diameter
・ 1402: Tire effective diameter
・ 1403: Wheel width
1404: Vertical distance between the wheel center of the front wheel when the vehicle is empty and the wheel center when the occupant gets on the vehicle
1405: vertical distance between the wheel center of the rear wheel when riding and the wheel center of the rear wheel when empty
・ 1406: Distance between left and right front wheels
・ 1407: Distance between left and right rear wheels
1408: distance between the wheel outer diameter and the wheel housing
1409: Wheel housing diameter
・ 1410: Outer diameter of tire wheel
<Dimensions under the floor>
FIG. 15 shows an example of an underfloor dimension input interface included in the design table creation program 61. This example shows an input interface for a three-row sheet. FIG. 15A shows an input table for inputting various dimensions under the floor. FIG. 15B shows a vehicle internal side view image to show corresponding portions of parameters input in the input table. FIG. 15C shows a cross-sectional image around the side sill.
[0095]
The below-floor related dimensions input here include the following.
1501: Vertical distance between front row floor panel and axle AF
・ 1502-1507: Horizontal distance between rear axle AR and bent part of floor panel
1508: vertical distance between the second row floor panel and the axle plane
1509: vertical distance between the upper end of the second row floor panel and the rear axle AR
・ 1510: Distance between the second row floor panel depression and the rear axle AR
・ 1511: Vertical distance between the third row floor panel and the rear axle AR
・ 1512: Distance between side sill and vehicle width center W
・ 1513: Side sill SS width
・ 1514: Side sill SS height
・ 1515: Vertical distance between side sill SS and floor panel
決定 How to determine front header and rear header positions ヘ ッ ダ
FIG. 18 is a diagram illustrating the reference of the horizontal position and the vertical position of the front header of the vehicle reference model. FIG. 19 is a diagram illustrating the reference of the horizontal position and the vertical position of the rear header of the vehicle reference model. As shown in FIG. 18, the horizontal position and the vertical position are, for example, one of the vertices at the intersection of a straight line 1301 that forms a predetermined acute angle upward from the horizontal direction around the viewpoint EP and a glass surface. The parallelogram defined as one side is the lowest position of the front header. At this time, it is a condition that it is located above the straight line L which is a reference for the sense of oppression. The position of the front header in the vehicle width direction is set at the vehicle width center W.
[0096]
Further, as shown in FIG. 19, the horizontal position and the vertical position of the rear header are, for example, above a straight line 1304 that forms a predetermined minute acute angle upward from the horizontal centered on the viewpoint EP, and It is restricted above the head clearance (distance 1208, 1215 from HP2, HP3).
[0097]
The detailed cross-sectional shapes of the front header and the rear header are defined by a structural model described later.
[0098]
In the above design table, the parameters in the length direction and the height direction with the front wheel axis AF as the origin are input. However, the present invention is not limited to this, and separates the engine room from the vehicle room. Each position information (each distance) may be input with the point on the dash panel, the point at the front end of the bumper, or the cowl point CW as the origin, or any of these points may be selected as the origin. It doesn't matter.
[0099]
<Pillar cross section input>
FIG. 24 shows an example of a pillar cross-sectional shape input interface included in the design table creation program 61. FIG. 24 (a) is an input table for selecting a cross section and inputting various dimensions. FIG. 24 (b) shows a perspective view image of a vehicle appearance in order to show corresponding portions of parameters input in this input table. FIG. 24C shows an image of each section.
[0100]
In the case of the wagon-type vehicle shown in the figure, for example, a front pillar section A, a center pillar section B, a rear auxiliary pillar section C, a rear pillar section D, a front header section E, a rear header section F, and a side roof rail section G are used as frame structures. In each case, in addition to parameters 2401 to 2403 for determining the cross-sectional shape shown in FIG. 24C, parameters such as plate thickness, material, strength, and weight can be input and set.
[0101]
[Standard model construction program]
The reference model construction program 62 generates a living space model by taking out parameters relating to vehicle interior dimensions, parameters relating to visibility, and parameters relating to under the floor from the above design table. Specifically, occupant parameters, such as the number of seats and the hip point position for each seat, relating to the seating state of the occupant in the vehicle are input, and a humanoid model representing the occupant and a seat representing the seat according to the input occupant parameters. The model is read from the database and transformed to build a living space model. At this time, the position information of the eyes and the view securing reference range information indicating the reference range to be secured as the view from the eyes are added to the humanoid model at the driving position of the vehicle using the parameters related to the visibility. I do.
[0102]
Further, a vehicle reference model is generated from parameters relating to the external dimensions. Further, a windshield model is generated in which the cowl point (CW) derived from the parameters relating to the external dimensions is the lower end, and the front header derived from the parameters relating to the visibility (front upper visibility) and the windshield angle 1109 is the upper end. I do.
[0103]
Then, a reference model is generated by combining these models.
[0104]
In addition, the reference model construction program can pass the generated coordinate data of each model to the image generation / display program so that the model can be displayed three-dimensionally on the display, and receive an input from the pointing device from the user in that state. Then, it is determined which part is deformed and how, and the coordinate data is changed according to the command.
[0105]
In other words, the user can change the displayed image by selecting and moving the part to be deformed of the three-dimensional image displayed on the display with a pointing device such as a mouse, and at the same time, changing the coordinate data in the memory according to the deformation. can do.
[0106]
Thereby, for example, the seating posture of the occupant can be changed according to the hip point and the floor height. Therefore, it is possible to verify the feasibility of the packaging after reproducing the optimum driving posture of the occupant that differs depending on the category of the planned vehicle. Further, tuning verification of a driving posture can be easily performed in response to various requirements such as a visibility standard, a safety standard, and reduction of a burden on an occupant.
[0107]
Of course, it is also possible to deform the reference model by starting the design table generation program again and changing the values input to the design table.
[0108]
Also, the reference model construction program can display a view securing reference range determined from the driver's viewpoint EP in the reference model. Therefore, it is possible to easily verify from the vehicle planning stage whether or not the visibility range, which is an important factor in verifying the feasibility of the packaging of the vehicle, from the vehicle planning stage. Eliminate concerns that could lead to major revisions at the stage.
[0109]
In addition, the reference model construction program may display at least one of a front header, a rear header, a pillar, and a lower end of a windshield as an obstacle that affects the driver's visibility in the reference model and an obstacle that affects the occupant's feeling of pressure. it can. These obstacles can be deformed and displayed in conjunction with a change in the viewpoint EP or the position of the occupant so as to leave a view securing reference range predetermined from the driver's viewpoint EP or a pressure suppression suppression reference range predetermined from the occupant. . Therefore, it is possible to easily verify from the vehicle planning stage whether or not the range of suppression of tightness, which is an important factor in verifying the feasibility of packaging of the vehicle, from the vehicle planning stage. Eliminate concerns that could lead to major corrections at a later stage.
[0110]
In addition, the reference model displays a bumper arrangement reference range corresponding to a change in the upper and lower end reference positions (points C1 and D1) of the front bumper in accordance with a parameter change of an external model described later. Therefore, it is possible to easily verify from the vehicle planning stage whether or not the vertical position range of the bumper, which is an important factor in verifying the feasibility of the packaging of the vehicle, from the vehicle planning stage. It is possible to dispel concerns that would lead to major revisions such as the failure of regulations at a later stage.
[0111]
The living space model is not changed depending on which external parameter group (vehicle type) is selected in the external model building program.
[0112]
[External model construction program]
The external model construction program 63 reads base external coordinate data from a database based on the vehicle type data included in the design table created by the design table creating program 61, and further reads external parameters (various parameters) input to the design table. (Original value) and its external coordinate data are changed based on a predetermined rule to construct an external model.
[0113]
Also, the external model construction program can pass the generated external model coordinate data to the image generation / display program to display it three-dimensionally on the display, and receive an input from the pointing device from the user in that state. , The input is a command for deforming which part and how, and the coordinate data is changed according to the command.
[0114]
In other words, the user can change the displayed vehicle outline image by selecting and moving the part to be deformed of the three-dimensional outline model image displayed on the display with a pointing device such as a mouse, and at the same time, according to the deformation. The coordinate data of the external model in the memory can be changed.
[0115]
That is, the external model construction program includes: i) a global deformation for automatically deforming a global shape read from the database according to the value of the design table; and ii) a local deformation for changing by specifying a locally deformed portion on the display. And two transformation functions.
[0116]
The following describes the rules used in these two variants.
[0117]
<Overall deformation rules>
FIG. 21 is a diagram for explaining the global deformation rule of the external shape model.
[0118]
The external model includes a plurality of reference points C1 (the front end of the bumper at the center of the vehicle width), C2 (cowl point), and C3 (a total height reference position at the center of the vehicle width (a position about 1/3 forward with respect to the front-rear direction of the roof). )), C4 (the rear end of the rear bumper at the center of the vehicle width), C5 (the left and right vehicle width reference position), C6 (the front wheel housing on the vertical line passing through the front axle), and C7 (the rear wheel on the vertical line passing through the rear axle) Housings), and these positions are determined according to the external shape parameters input to the design table. The points C1 to C4 are set at the center of the vehicle width.
[0119]
The reference points C1 and C4 are used to define the total length set at the center in the vehicle width direction and at the most protruding position of the front bumper and the rear bumper in the front-rear direction as the defined points for the full length.
[0120]
The reference point C2 is used as a cowl point definition point in defining the cowl point (box) height set at the center in the vehicle width direction and at the lower end of the windshield.
[0121]
The reference point C3 is used to define the total height set at a specific position on the roof panel at the center in the vehicle width direction as a total height defining point.
[0122]
The point C5 is used for defining the full width set as the full width defined point at the position of the most protruding portion in the vehicle width direction on the left and right side surfaces of the vehicle body.
[0123]
Points C6 and C7 are used to define four front and rear overhangs set at the center in the front-rear direction of the wheel housings on the left and right side surfaces of the vehicle body as overhang definition points.
[0124]
These reference points C1 to C7 are input or changed by the wheel base 1101, the overall width 1102, the overall height 1103, the front overhang 1105, the rear overhang 1106, the horizontal position 1107 of the cowl point CW, the vertical position 1108 of the cowl point CW, and the windshield inclination 1109. As a result, the movement of the position in the front-rear direction as a part that is not interlocked with the outer shape model and is not deformed remains regulated, and is moved in the vertical direction in conjunction with the outer shape model according to the changed parameter.
[0125]
That is, the external specification values input to the design table are the center of the vehicle width direction, the coordinates of the definition point C3 set at the specific position on the roof panel, the center of the vehicle width direction, the front bumper and the rear. The coordinates of the definition points C1 and C4 set at the most protruding position with respect to the front-rear direction of the bumper, the coordinates of the definition point C5 set at the most protruding position in the vehicle width direction on the side of the vehicle body, and the center in the vehicle width direction. And the coordinates of the definition point C2 (CW) set at the lower end of the windshield and the coordinates of the definition points C6 and C7 set at the center in the front-rear direction of the wheel housing formed on the side of the vehicle body. It can be said that it contains a value.
[0126]
In other words, only the coordinates of these defined points are directly determined according to the specification values input to the design table, and the other coordinates included in the external model are defined by these defined points and a rule prepared in advance for each vehicle. Is obtained by calculation based on For example, the coordinates of C3 and C4 are defined by the total height 1103, the wheelbase 1101, and the rear overhang 1106 input in the design table, and the line connecting them is automatically derived by calculation.
[0127]
Then, as shown in FIG. 21A, when the overall height 1103, the overall width 1102, and the wheelbase 1101 are changed as parameters (specification values of the vehicle) of the reference model, the outer shape model maintains the shape of the roof panel. While moving up and down. Whether or not the inclination angle 1109 of the windshield and the length of the roof panel in the front-rear direction are deformed according to the movement and deformation of the roof panel differs depending on the vehicle type.
[0128]
That is, when a sports type model is selected as the external model, when the specification value of the overall height 1103 is changed, the front-to-back length of the windshield and the roof panel is given priority while maintaining the windshield tilt angle 1109. Automatically transformed into Further, when the specification value of the overall height 1103 is changed when the minivan model is selected, the front-to-back length of the windshield and the roof panel is changed while the windshield inclination angle 1109 is preferentially changed. Automatically transformed.
[0129]
Also, as shown in FIG. 21B, the entire front and rear of the external shape base model according to the vehicle type in the database according to the overall length (1101 + 1105 + 1106) as the specification value of the vehicle and the horizontal position 1107 of the cowl point CW. The entire glass is moved in the front-rear direction while maintaining the shapes of the whole, the windshield and the rear glass.
[0130]
Also, if the top edge of the windshield is deformed due to the vertical deformation of the roof panel, the front header defined in the reference model is set so as not to follow the input and change, and is similarly defined in the reference model. A predetermined visibility securing reference range and a tightness suppression reference range can be verified for the determined occupant's head (viewpoint EP), and a part or an external model that is not directly involved in these verification items is verified. Parts that need to follow the deformation are set to be automatically deformed.
[0131]
FIG. 35 shows an example of a display screen displaying the external shape model before the height change in front perspective (a) and rear perspective (b). FIG. 36 shows the external shape model after the height change according to the above deformation rule from the state of FIG. FIG. 21 shows an example of a display screen displayed in a perspective view (a) and a rear perspective view (b). For example, when the overall height 1103 is increased (smaller), the entire roof of the external model together with the point C3 in FIG. It moves upward (downward) and is automatically deformed so that the position of the cowl point CW does not move and the windshield inclination 1109 becomes smaller (larger). When the entire width 1102 is increased (decreased), the entire body side surface of the external model moves in the vehicle width direction together with the points C5 to C7 in FIG. 21B, and the positions of the reference points C1 to C4 do not move. The entire body is automatically deformed so that it becomes larger (smaller) in the width direction.
[0132]
FIG. 31 shows an example of a display screen displaying the outer shape model before the wheelbase change in a front perspective view (a) and a rear perspective view (b). FIG. 32 shows the outer shape model after the wheelbase change according to the above deformation rule from the state of FIG. FIG. 21 shows an example of a display screen in which is displayed in front perspective (a) and rear perspective (b). For example, when the wheel base 1101, the front overhang 1105, or the rear overhang 1106 is increased (decreased), FIG. In (a) and (b), the front and rear of the external model move forward (rearward) together with the reference point C1 or C4 so that the position of the cowl point CW does not move and the entire body becomes larger (smaller) in the front-rear direction. Automatically transformed.
[0133]
As described above, since the outline model is automatically deformed and displayed only by inputting the specification values of the planned vehicle, the verification operation can be performed easily and efficiently.
[0134]
In addition, since the optimal deformation rule is set in advance for the vehicle type, the shape of the model at the time of deformation can be displayed as a realistic one, improving the accuracy of the verification work and reducing the manual shape change of the model. Work efficiency can be greatly improved.
[0135]
In addition, in the reference model, the front header, which is important for the feeling of oppression and visibility, is set so that it does not follow the input or change of specifications, but it does not directly relate to the verification items or needs to follow the external shape. Is set to automatically deform, so that the efficiency of the verification work can be improved.
[0136]
Further, by changing the deformation rule for each model of the external model, the model shape after further automatic deformation can be made closer to reality, and subsequent manual correction can be reduced. In other words, in the sports type, it is necessary to improve the aerodynamic characteristics from the indoor space, so it is not realistic to change the specification value to raise the overall height and make the glass inclination angle upright and deform, but in a minivan Since it is more realistic to prioritize the living space over aerodynamics, it can be said that the workability is better with such a change.
[0137]
In addition, when a model is deformed in response to input or change of specification values, a model according to the image of the vehicle to be planned can be automatically and easily created, while the above-mentioned definition points are the minimum when determining the outline of the vehicle. Since the required specification values are required, a vehicle close to the image can be automatically deformed and displayed by simply inputting these small specification values.
[0138]
In detail, at the time of planning a vehicle, there is no detailed specification value, so if there are many specification inputs, not only the input itself is difficult, but if there are many input specifications, it is based on the input user's regulation concept. There is a high possibility that the vehicle will have a vehicle shape, which makes it difficult to plan a free and unusual vehicle. The present invention makes it possible to plan a car with a free idea that is hard to be caught by the concept of regulation, while suppressing manual correction after display as much as possible.
[0139]
More specifically, by setting the cowl point definition point, when the overall height is changed, for example, by having the cowl point defined point, the cowl point and the Since it is possible to set whether the hood is to be deformed synchronously, the model is automatically deformed according to the image of the vehicle model, so that efficient planning and verification work can be performed.
[0140]
In addition, by setting the overhang definition point, when changing the overall length, you can select whether to deform only the cabin or the overhang, and the model is automatically deformed according to the image of the vehicle model Therefore, efficient planning and verification work can be performed.
[0141]
<Local deformation rule>
≫ Specify a point and move ≫
FIG. 22 is a diagram for explaining the local deformation rule of the outline model. In addition to the reference points C1 to C7 (points in which movement in the front-back (horizontal) direction is restricted and movement in the up-down (vertical) direction is permitted), Further, with respect to the outer shape model, the first local deformation points D1 to D9 that can be arbitrarily moved in the front-rear, left-right, and up-down directions, and the relative positional relationship between the first local deformation points D1 to D9 is maintained. In accordance with the arbitrary movement of the first local deformation points D <b> 1 to D <b> 9, the local movement follows the movement according to the movement amount (that is, moves and deforms while keeping the shape of the line segments LA <b> 1 to LA9). Deformation points E1 to E18 are set. The first local deformation points D1 to D8 are set at the center of the vehicle width.
[0142]
The first local deformation point D1 is set at the lower end of the front bumper at the center of the vehicle width, and the point D2 is set at the boundary between the upper end surface of the front bumper at the center of the vehicle width and the front end surface composed of the front grille and the headlamp. Is set at the front end of the hood at the center of the vehicle width, point D4 is set at the top of the front window glass at the center of the vehicle width, point D5 is set at the top of the rear window glass at the center of the vehicle width, and point D6 is the rear window at the center of the vehicle width. The point D7 is set at the lower edge of the rear bumper at the center of the vehicle width, and the point D7 is set at the lower end of the rear bumper at the center of the vehicle width. Point D9 is set at each corner forming the outline of the left and right side window glass. To have.
[0143]
The second local deformation points E1 and E2 are set on the left and right sides forming the outline LA1 of the lower end of the front bumper with the point D1 as the center of the vehicle width, and the points E3 and E4 are formed with the upper end surface of the front bumper with the point D2 as the center of the vehicle width. The contours LA2 of the boundary between the front grille and the front end face composed of the headlamp are set on the left and right sides forming the contour LA2, and the points E5 and E6 are the contour LA3 of the front end of the hood with the point D3 as the center of the vehicle width. The points E7 and E8 are set at the left and right corners forming the outline LA4 of the upper end of the windshield with the point D4 as the center of the vehicle width, and the points E9 and E10 are set at the point D5. The center of the width is set at the left and right corners forming the outline LA5 of the upper end of the rear window glass. The points E11 and E12 are set at the left and right corners forming the outline LA6 of the lower end of the rear window glass with the point D6 as the center of the vehicle width. And the tail lamp are set on the left and right sides forming a contour LA7 of a boundary portion between the rear end face and the rear end surface. Set on the side. The points E17 and E18 are set on lines forming the outline LA9 of the lower ends of the left and right side window glasses extending rearward from the point D9.
[0144]
In addition, one of the pair of points E1 and E2 is symmetrically moved and deformed like a mirror image by following one of the points E1 and E2 by reference to the point D1. Similarly, points E3 and E4 are based on point D2, points E5 and E6 are based on point D3, points E7 and E8 are based on point D4, points E9 and E10 are based on point D5, and points E11 and E11. E12 is based on the point D6, points E13 and E14 are based on the point D7, and points E15 and E16 are based on the point D8, follow either one of them according to the same rule, and symmetrically move and deform like a mirror image. I do.
[0145]
Also, the pair of left and right points D9 and points E17 and E18 on the line LA9 follow one of them according to the same rule as described above, and move and deform symmetrically like a mirror image.
[0146]
≫ Move by specifying the line ≫
Further, according to the above-described local deformation rule, the first local deformation lines LB1 to LB3 that can be arbitrarily moved in the front-rear, left-right, and up-down directions, and the relative positions of the first local deformation lines LB1 to LB3 to the first local deformation line LB1 A second local deformation line LC1 that moves in accordance with the amount of movement of the first local deformation line LB1 in accordance with an arbitrary movement of the first local deformation line LB1 while maintaining the positional relationship and the line shape, and the second local deformation line LC1 A third local deformation line LA3 is set that follows the second local deformation line LC1 in accordance with the amount of movement of the second local deformation line LC1 while maintaining the relative positional relationship and the line shape.
[0147]
Further, the second local deformation line LC2 that follows the first local deformation line LB2 according to the amount of movement thereof while maintaining the relative positional relationship with the first local deformation line LB2 and the line shape while maintaining the line shape. Similarly, while maintaining the relative positional relationship with the first local deformation line LB3 and the line shape, the second local moving following the arbitrary local movement of the first local deformation line LB3 according to the moving amount A deformation line LC3 is set.
[0148]
Also, when the second local deformation line LC1 is designated and moved, the third local deformation line LA3 moves following, but the first local deformation line LB1 does not move.
[0149]
In this way, by specifying and moving a plurality of preset local deformation lines to a specific portion of the external shape model, the external shape model is held in correspondence with the movement amount of the local deformation line while maintaining the line shape of the specific portion. Be transformed.
[0150]
The first local deformation line LB1 forms the contour of the upper end of the front bumper with the reference point C1 as the center of the vehicle width. On this line LB1, the reference point C1 and points F1 to F4 defining the left and right sides of the upper end of the front bumper are set. Have been.
[0151]
The second local deformation line LC1 that moves following the first local deformation line LB1 forms a contour of a boundary between a front bumper upper end surface, a front grille, and a front end surface including a headlamp with the point D2 as a vehicle width center. On the line LC1, a point D2 and points E3, E4, F1, and F2 defining left and right sides of the boundary are set.
[0152]
The third local deformation line LA3 that moves following the second local deformation line LC1 forms a contour of the front end of the hood with the point D3 as the center of the vehicle width. On this line LA3, the point D3 and the front end of the hood are formed. Are set at points E5 and E6 that define the left and right sides of.
[0153]
The first local deformation line LB2 forms the contour of the left and right side roof rails, and a point F5 defining the left corner of the lower end of the windshield and the left side of the upper end of the windshield are located on the left line LB2. A point E7 that defines a corner, points F7 and F9 that define a side roof rail on the left side of the roof panel, and a point E9 that defines a left corner of the upper end of the rear window glass are set.
[0154]
Further, on the right side line LB2 of the first local deformation line LB2, a point F6 defining a right corner of the lower end of the windshield, a point E8 defining a right corner of the upper end of the windshield, and a roof panel. The points F8 and F10 defining the right side roof rail and the point E10 defining the right corner of the upper end of the rear window glass are set.
[0155]
The left and right second local deformation lines LC2 that move following the first local deformation line LB2 form the contours of the upper ends of the left and right side window glasses, and a point D9 and points G1 to G4 are formed on the left and right lines LC2. Each is set.
[0156]
Further, the first local deformation line LB3 forms the contour of the upper end of the rear bumper with the reference point C4 as the center of the vehicle width. On this line LB3, the reference point C4 and a point F11 defining the left and right sides of the upper end of the rear bumper. To F14 are set.
[0157]
The second local deformation line LC3 that moves following the first local deformation line LB3 forms the contour of the boundary between the upper end surface of the rear bumper, the rear end surface composed of the rear panel and the tail lamp with the point D7 as the vehicle width center, On the line LC3, a point D7 and points E13, E14, F11, and F14 defining left and right sides of the boundary are set.
[0158]
When one of the points F1 and F4 is moved, one of the points F1 and F4 is moved and deformed following a mirror image based on the point D1. Similarly, F2 and F3 are based on point C1, F5 and F6 are based on point C2, F11 and F14 are based on point C4, F12 and F13 are based on point C4, and E15 and E16 are based on point D8. Based on the same rule, one of them is moved / deformed following a similar rule as a mirror image.
[0159]
When one of the pair of local deformation lines LB2 defining the left and right roof rails is moved, one of the other is moved and deformed as a mirror image with respect to the points C2, C3, D4, and D5. You. Further, the local deformation line LC2 that moves following these local deformation lines LB2 is also moved and deformed by following one of them like a mirror image according to the same rule.
[0160]
The point C1 (vertical position of the front bumper) and the point C4 (vertical position of the rear bumper) are moved in the vertical direction according to the parameters set in the reference model.
[0161]
As described above, by dragging and moving the first local deformation point and the local deformation line using the mouse pointer or the like, the second and third local deformation points and the local deformation line follow and move. The work efficiency can be improved upon partial model deformation. That is, when expressing the appearance at the planning level of the vehicle, it is not necessary to increase the appearance accuracy so much, and it is sufficient that the overall image and the layout can be roughly verified. From this, in the present embodiment, a part necessary for verifying only the above is selected, and a function for easily deforming only this part is set. Not only is it possible, but the work efficiency has been greatly improved.
[0162]
In addition, the above-mentioned local deformation points and local deformation lines are set at locations that are meaningful for deforming the external shape of the model when verifying the overall image of the planned vehicle, verifying the visibility, etc., and verifying the living space etc. Have been.
[0163]
Also, by setting the function of the first local deformation point and the second local deformation point linked thereto, for example, when it is desired to deform the entire upper end of the glass, this can be achieved only by moving the first local deformation point. When only the part is to be deformed, the second local deformation point may be moved, so that the working efficiency can be significantly improved.
[0164]
Furthermore, by incorporating those functions only in necessary parts, the program relating to the external model is simplified, and high-speed execution is enabled.
[0165]
As described above, by performing global deformation and local deformation on the external model in accordance with the above-described deformation rules, the conditions for the plan verification can be easily changed. The points and deformation rules as described above are similarly defined for models other than the wagon.
[0166]
In addition, in order to enable deformation suitable for the vehicle type while securing the degree of freedom of deformation of the model, the deformation rule may be variable for each vehicle type of the external model, and as illustrated in FIG. With respect to the open and truck, the rear deck may be moved and deformed up and down while maintaining the shape of the rear deck in the front-rear direction and the vehicle width direction with the rear glass lower end position G1 as a reference point.
[0167]
According to the above deformation rule, when deforming the external model in synchronization with the parameter change of the reference model, conventionally, it was necessary to individually define lines and surfaces to be deformed when expressing one model. Such work and programs are not required, and workability can be improved and programs can be simplified.
[0168]
In addition, since the outer shape model is automatically deformed by changing the parameters, the feasibility of packaging and visibility from the vehicle interior can be easily and quickly verified many times under different conditions.
[0169]
In the structural model described later, the definition points are set at the same positions as those of the external model, so that the work efficiency of the user can be improved and the strength and the like can be verified as substantially matching the planned vehicle. In addition, it is not necessary to change data such as strength and the like in detail, thereby improving verification efficiency.
[0170]
[Structural model construction program]
The structural model construction program reads the pillar configuration and the cross-sectional shape input to the design table, generates three-dimensional coordinate data of the skeleton structure of the vehicle, passes the data to an image generation / display program, and causes the display to display three-dimensionally on a display. In this state, an input from a pointing device from a user is received, a command is issued to determine which part is deformed, and coordinate data is changed in accordance with the command.
[0171]
In addition, since the shape of the skeleton that constitutes the structural model is automatically deformed according to the deformation of the outer diameter model, it does not shift when the structural model and the outer model are overlapped, The interference problem can be accurately verified.
[0172]
Further, the information on the cross-sectional area and the strength is set to be different based on the difference in the size of the model of the structural model.
[0173]
Therefore, the work efficiency of the user can be improved. Further, since the strength and the like can be verified as substantially matching the vehicle to be planned, it is not necessary to finely change the data of the strength and the like, so that the verification efficiency can be improved and the verification accuracy can be improved.
[0174]
In addition, since the structural model has information on the cross-sectional area and strength of the frame structure such as the body frame and pillars, it is possible to quickly evaluate the feasibility of packaging, and to provide the cross-sectional area information of pillars and the like. It becomes possible to quickly verify the feeling of oppression to the occupants in the passenger compartment space.
[0175]
Further, by having the strength information, the verification of the strength of the planned vehicle, the verification of the collision performance, the evaluation of vibration, and the like can be quickly performed, and the planning accuracy of the planned vehicle can be extremely high from the initial planning stage.
[0176]
In addition, since the structural model has information on the material of the steel sheet, the thickness of the steel sheet, and the weight, it is possible to verify the vehicle weight, weight distribution, the position of the center of gravity, etc. of the planned vehicle. Can be clarified early in development.
[0177]
Further, the structural model has a plurality of frame structures such as a front pillar, a center pillar, a rear pillar, a side roof rail, a front header, a rear header, and at least one of a cross-sectional area and a strength (cross-sectional shape) for each frame portion. Since the setting can be changed, the required strength, cross-sectional area, and the like are naturally different for different vehicle types (vehicle categories such as wagons and sports). Then, since the cross-sectional area, strength, and the like of the structural model can be individually changed, optimal packaging verification and strength verification according to the planned vehicle can be performed, and planning accuracy can be extremely high.
[0178]
[Image generation and display program]
<Reference point for model superimposition display>
The model construction programs 61 to 64 shown in FIG. 40 have a reference point designation program for designating a reference position for superimposition of each model. In the structural model, reference points (reference parts) defined in a specific part of the vehicle are made to coincide with each other and displayed in a superimposed manner.
[0179]
Specifically, the reference portion of the vehicle is, for example, any one of a point C2 on a dash panel DP that separates an engine room and a vehicle compartment in FIG. 22, a wheel center of a front wheel, or a frontmost bumper C1 in a vehicle width center. Or a combination thereof.
[0180]
In this manner, by specifying the reference position at the time of superimposing the respective models, it is possible to superimpose the respective models and verify them.
[0181]
In addition, by defining a reference position at the time of superposition, each model is created based on the same reference, so that the verification accuracy at the time of superposition can be improved.
[0182]
In addition, if the reference part is a point on the dash panel that separates the engine room and the cabin of the vehicle, the interference relationship between the living space and the external shape centered on the point on the dash panel can be displayed. The field of view of the hand can be accurately verified.
[0183]
In addition, if the reference portion is the center of the front wheel of the vehicle, the interference relationship between the living space centered on the front wheel and the external shape can be displayed, and the driver's seat pedal located at a position close to the front wheel. The position and the attitude of the driver can be accurately verified.
[0184]
In addition, if the reference portion is the front end of the bumper, the interference relationship between the living space centered on the front end of the bumper and the external shape can be displayed, and the front portion of the vehicle can be accurately verified.
[0185]
[Plan verification flow]
Next, a description will be given of a simulation method for planning and verifying a new type vehicle using the reference model, the external model, and the structural model.
[0186]
FIG. 25 is a diagram for explaining a planning process of a new type of vehicle determined at the preceding stage of the simulation of the present embodiment. FIGS. 26 and 27 are flowcharts showing a simulation method after the above-described planning process is determined.
[0187]
First, planning requirements are determined in the planning process shown in FIG. The planning requirements include, for example, overall length, overall width, overall height, wheelbase, front row hip point, floor height, suspension type, engine layout, seat arrangement, drive system, vehicle type, destination, and other new technologies. .
[0188]
After that, as a prerequisite, whether or not to use a platform (chassis), derivation from existing models, new conditions, etc. are determined.
[0189]
Next, the preconditions are classified into level 1 to level 3 according to the degree of diversion of the platform and level 4 of the new condition.
[0190]
In the above prerequisites, Level 1 is for the case of complete diversion of the platform. For example, the overall length, overall width, overall height, wheelbase, front row hip point, floor height, suspension type, engine layout, etc. are shared with existing models. Content.
[0191]
Level 2 is a case where the platform is partially diverted. For example, the overall height and the engine layout are shared, the overall width, the front row hip point and the floor height are changed conditionally, and the wheelbase and suspension type are changed. It is.
[0192]
Level 3 is a case where the platform is partially diverted. For example, only the engine layout is shared, and the other length, overall width, overall height, wheelbase, front row hip point, floor height, suspension type, etc. are changed. is there.
[0193]
Level 4 is a content in which all of the above overall length, overall width, overall height, wheelbase, front row hip point, floor height, suspension type, engine arrangement, and the like are changed.
[0194]
When the planning requirements and the prerequisites are determined as described above, the planning support program is started to verify the planning of the new vehicle as shown in FIGS.
[0195]
First, in FIG. 26, in step S1, the planning support program (in particular, three-dimensional CAD software) shown in FIG. 40 is read from the external storage unit in FIG. 1 and activated. As a result, a startup screen illustrated in FIG. 28 is displayed. After checking the completed model 31 on this screen, by clicking the OK button 35, the process advances from step S3 to step S5, and the process for reviewing the completed model whose plan verification has already been completed is started. In step S5, a list of a plurality of project files stored in the database as completed models is displayed on a screen as shown in FIG. Here, if any plan file is selected and the OK button 36 is clicked, the process proceeds to step S7, where the specified completed model is read from the database. Then, the process further proceeds to step S28 to display an image of the completed model.
[0196]
If a model other than the completed model is selected on the screen of FIG. 28, it means that a model is to be constructed again from the design table. Therefore, the process proceeds to FIG. 30 and the existing design table is read out or newly designed. Prompt you to create a table.
[0197]
If the new design table creation button 43 is selected, the process proceeds from step S9 to step S15, where the design table creation program is started, and a numerical value is input to each parameter.
[0198]
If the existing design table read button 41 is selected in FIG. 30, the process proceeds from step S9 to step S11, and proceeds to a design table selection process. In this process, a design table stored in a database or a local external storage unit is specified. In this case, a design table including all the parameters of the existing vehicle may be selected, a design table including only the parameters of the chassis may be selected, or a design table that was being created in the past may be selected. You may.
[0199]
When one of the design tables is selected in step S11, the design table selected in step S13 is read.
[0200]
Then, in step S15, it is checked with the user whether it is necessary to input or change the parameters in the design table. If there is no input or change of the parameters, the process proceeds to step S17.
[0201]
If there is a change in the parameters, the process proceeds to step S15, the design table creation program is started, the selection table read out in step S13 is opened, and a numerical value is input to each parameter.
[0202]
In steps S17 to S27, the model selected in FIG. 28 is constructed. In FIG. 28, the reference model, the external model, and the structural model can be selected individually or in combination.
[0203]
When the reading of the completed models to be displayed or the construction of the reference model and / or the outline model and / or the structural model is completed, in step S28, the images of those models are displayed.
[0204]
FIG. 27 shows detailed processing in this image display state.
[0205]
First, in step S31, the image generation / display program reads out the three-dimensional coordinate data of the display target model, and develops it into image data in step S33. At this time, when some models are superimposed and displayed, the predetermined reference points are displayed so as to overlap each other, and the interference state is verified. In addition, image processing can be performed so that a three-dimensional image obtained by superimposing the models is displayed as a moving image. In this case, the visibility from the vehicle interior, the reference range for securing the visibility and the sense of oppression, assuming all vehicle driving scenes. Evaluation of the suppression reference range can be performed. Further, it is also possible to display a portion where the reference model interferes with the external model and the structural model and the unmatch in different colors, or to display a warning sound or the like.
[0206]
Here, the user can perform a model correction instruction (local deformation instruction) by selecting a deformation point of the displayed model with a pointing device and moving the deformation point.
[0207]
If there is an instruction to correct the model, the process proceeds from step S35 to step S37 to deform the image data, and further proceeds to step S33 to display the image again on the display.
[0208]
Deformation points are prepared for any of the reference model, the outline model, and the structure model, and each model can be deformed on a three-dimensional image.
[0209]
When the correction is completed and a save instruction is input, the process proceeds from step S39 to step S41, where the correction is reflected on the coordinate data corresponding to each model and stored. In the case of a save instruction in a complete model display state, it can be saved in a database.
[0210]
<Verification>
Next, the verification work performed in step S33 of FIG. 27 will be described.
[0211]
FIG. 31 shows an example of a display screen displaying the outer shape model before the wheelbase change in a front perspective view (a) and a rear perspective view (b). FIG. 32 shows the outer shape model after the wheelbase change according to the above deformation rule from the state of FIG. 31 is shown in a front perspective view (a) and a rear perspective view (b). In the display screen of FIG. 31, the third row occupant has jumped out to the rear of the vehicle, and the wheelbase or rear overhang is short. Excessiveness can be easily visually verified. Therefore, it is easily understood that a change to increase the parameters of the wheel base and the rear overhang is necessary, and the state after the change of the wheel base can be confirmed in real time from FIG.
[0212]
FIG. 33 is an example of a display screen displaying the external shape model before the vehicle width change in a front perspective (a) and a rear perspective (b). FIG. 34 is an external shape model after the vehicle width change according to the above-described deformation rule from the state of FIG. 33 is shown in a front perspective view (a) and a rear perspective view (b). In the display screen of FIG. 33, the seat width from the front row to the third row is narrow, and two to three persons per row. The vehicle cannot be seated, and it can be easily visually verified that the vehicle width is too narrow. Therefore, it is easily understood that a change to increase the vehicle width parameter is necessary, and the state after the vehicle width change can be confirmed in real time from FIG.
[0213]
FIG. 35 shows an example of a display screen displaying the external shape model before the height change in front perspective (a) and rear perspective (b). FIG. 36 shows the external shape model after the height change according to the above deformation rule from the state of FIG. FIG. 36 shows an example of a display screen displayed in perspective (a) and rear perspective (b). In the display screen of FIG. 35, the head clearance from the front row to the third row is small, and the head of each row occupant has a head clearance line. It is protruding out of the way, and this state is displayed by displaying the occupant's head in a different color, or by issuing a warning sound, etc., to alert the operator, so it is visual that the overall height is too low. Can be easily verified. Therefore, it is easily found that a change to increase the parameter of the total height is necessary, and the state after the total height change can be confirmed in real time from FIG.
[0214]
FIG. 37 is an example of a display screen displaying the living space model of the front row occupant before the hip point change in a side view, and FIG. 38 is a side view of the living space model after the hip point change in accordance with the above deformation rule from the state of FIG. In the display screen of FIG. 37, the feet of the occupant in the second row are off the floor, and this state is displayed in a different color, or a warning is displayed. Since the operator is alerted by emitting a sound or the like, it can be easily visually verified that the hip point of the front row occupant is too low. Therefore, it is easily understood that the hip point parameter needs to be changed, and the state after the hip point change can be confirmed in real time from FIG.
[0215]
FIG. 39 is a diagram showing a superimposed image of a windshield model 391 included in the reference model and an external model. Using this figure, it is possible to verify whether or not the windshield portion included in the external model hinders the occupant's view. In this example, if the structural model is included in the substantially parallelogram-shaped frame of the front header, the structural model and the external model corresponding to the reference model are set, and it can be determined that there is no problem.
[0216]
On the other hand, if the structural model is located behind the front header frame in the cabin, it is determined that there is a problem with the feeling of oppression. Can be determined to be hindered.
[0219]
According to the above-described embodiment, the man-hour required for creating three-dimensional CAD data is conventionally 10 people / day, and it takes about 5 people / day to create a project. Although it takes about 20 people / day in man-hours, one project can be completed in 0.3 people / day. In addition, although the man-hours required to create a model are increased, there is no need to create three-dimensional CAD data from scratch for each project as in the past, and once a model is created, there is no need to create subsequent data. Can be realized at an extremely high level.
[0218]
In addition, the work of determining the specification values of the new vehicle and the evaluation of the feasibility of the packaging can be speeded up, and the visibility from the passenger compartment can be evaluated if the three-dimensional image model is configured to be displayed as a moving image.
[0219]
In addition, since the image processing is performed by classifying the model into the reference model, the external model, and the structural model and superimposing these models, the program for realizing the simulation is not complicated, and the occupant sitting posture of the new vehicle can be improved. The external shape (packaging, visibility and appearance), structure (rigidity), etc. can be independently verified, and work can be streamlined. There is no need to compromise in the middle of the stage where the whole is not visible, and ideal planning work can be realized.)
[Brief description of the drawings]
FIG. 1 is a diagram exemplifying a configuration of a computer system to which a device, a method, and a program for supporting planning and verification of a new vehicle according to an embodiment of the present invention can be applied.
FIG. 2 is a diagram hierarchically showing a detailed structure of a vehicle model database.
FIG. 3 is a diagram showing one image display example of a vehicle reference model.
FIG. 4 is a diagram showing one image display example of an occupant reference model.
FIG. 5 is a diagram showing one image display example of an external model.
FIG. 6 is a diagram showing one image display example of a structural model.
FIG. 7 is a diagram illustrating an image display example of a completed model in which a reference model, an outer model, and a structural model are superimposed.
FIG. 8 is a diagram illustrating an image display example of a completed model in which a reference model and a structural model are superimposed.
FIG. 9 is a diagram illustrating an image display example of a completed model in which a reference model, an outer model, and a structure model are superimposed.
FIG. 10 is a diagram illustrating an image display example of a completed model in which a reference model, an outer model, and a structural model are superimposed.
FIG. 11 shows a two-dimensional image displaying a vehicle reference model in the case of a three-row seat in a forward view (b) and a side view (c), and an input screen for external dimensions input as parameters to corresponding portions of the two-dimensional image. It is a figure which illustrates (a).
FIG. 12 is a two-dimensional image showing a vehicle reference model in the case of a three-row seat in a forward view (b), a side view (c), a plan view (d), and an enlarged view (e) around a dash panel; It is a figure which illustrates the input screen (a) of the vehicle interior dimension input as a parameter to the corresponding part of a two-dimensional image.
FIG. 13 shows a two-dimensional image displaying a vehicle reference model in the case of a three-row seat in a side view (b) and an input screen (a) of a view-related dimension input as a parameter to a corresponding portion of the two-dimensional image. FIG.
FIG. 14 shows a two-dimensional image and a two-dimensional image displaying a vehicle reference model in the case of a three-row seat in a side view (b), a plan view (c) and side views (d) and (e) around a wheel housing. FIG. 7 is a diagram exemplifying a tire-related dimension input screen (a) input as a parameter to a corresponding part of FIG.
FIG. 15 shows a two-dimensional image displaying a vehicle reference model in the case of a three-row seat in a side view (b) and a cross-sectional view around a side sill (c), and an underfloor input as a parameter to a corresponding portion of the two-dimensional image. It is a figure which illustrates the input screen (a) of a relevant dimension.
FIG. 16 is a diagram illustrating a method for determining a horizontal position TL, a vehicle width direction position BL, and a vertical position WL of a hip point HP1 of a front row occupant with respect to a vehicle reference model.
FIG. 17 is a diagram illustrating a method for determining a horizontal position 1107 and a vertical position 1108 of a cowl point CW of a vehicle reference model.
FIG. 18 is a diagram illustrating a method for determining a horizontal position and a vertical position of a front header of a vehicle reference model.
FIG. 19 is a diagram illustrating a method for determining a horizontal position and a vertical position of a rear header of a vehicle reference model.
FIG. 20 is a diagram illustrating an external shape model defined by a vehicle type and the number of pillars;
FIG. 21 is a diagram for describing a global deformation rule of an external model.
FIG. 22 is a diagram illustrating a local deformation rule of an outline model.
FIG. 23 is a diagram illustrating a vehicle type deformation rule of an external model.
24 exemplifies two-dimensional and three-dimensional images displaying an external view (b) and a cross-sectional shape (c) of a structural model, and an input screen (a) of a cross-sectional dimension input as a parameter to a corresponding portion of the image. FIG.
FIG. 25 is a diagram illustrating a planning process for a new type of vehicle that is determined before the simulation of the embodiment.
FIG. 26 is a flowchart showing a simulation method after the planning process is determined.
FIG. 27 is a flowchart illustrating a simulation method after the planning process is determined.
FIG. 28 is a diagram showing an example of an operation screen at the start of the simulation in FIGS. 26 and 27.
FIG. 29 is a diagram illustrating an example of a display screen when a completed model button is selected on the operation screen of FIG. 28;
30 is a diagram showing an example of a display screen when a reference model button is selected on the operation screen of FIG. 28.
FIG. 31 is a diagram showing an example of a display screen displaying a front perspective view (a) and a rear perspective view (b) of an external model before a wheelbase change.
32 is a diagram illustrating an example of a display screen that displays the outer shape model after the wheelbase is changed according to the above-described deformation rule from the state of FIG. 31 in a front perspective (a) and a rear perspective (b).
FIG. 33 is a diagram showing an example of a display screen for displaying the external shape model before changing the vehicle width in a front perspective (a) and a rear perspective (b).
FIG. 34 is a diagram showing an example of a display screen displaying a front perspective view (a) and a rear perspective view (b) of the external model after changing the vehicle width in accordance with the deformation rule from the state of FIG. 33;
FIG. 35 is a diagram showing an example of a display screen displaying a front perspective view (a) and a rear perspective view (b) of an external shape model before a total height change.
FIG. 36 is a diagram showing an example of a display screen displaying the outer shape model after changing the overall height in accordance with the deformation rule from the state of FIG. 35 in a front perspective (a) and a rear perspective (b).
FIG. 37 is a diagram illustrating an example of a display screen that displays the external shape model of the front row occupant before the hip point change in a side view.
FIG. 38 is a diagram showing an example of a display screen for displaying, from a side view, an outer shape model after a hip point has been changed according to the deformation rule from the state of FIG.
FIG. 39 is a diagram showing an interference state between the windshield model and the external model.
FIG. 40 is a diagram showing a configuration of a planning support program of the present embodiment.

Claims (10)

To support vehicle planning, computers
An input step of inputting external specification values defining the external dimensions of the vehicle,
The external shape parameter group relating to the external shape of the vehicle is read, and the external shape parameters included in the read external shape parameter group are changed based on the external specification values and a predetermined rule to construct an external shape model representing the external appearance of the vehicle. Outline model construction process,
A living space model construction step of constructing a living space model representing the occupant's habitability by inputting occupant parameters relating to the seating state of the occupant in the vehicle,
A display step of superimposing and displaying the exterior model constructed in the exterior model construction step and the living space model constructed in the living space model construction step;
Is a planning support program that executes
The external specification values are:
The coordinates of the defined point set in the center in the vehicle width direction and at a specific position on the roof panel,
The coordinates of the definition point set at the center in the vehicle width direction and at the position of the most protruding portion with respect to the front-rear direction of the front bumper and the rear bumper,
The coordinates of the definition point set at the position of the most protruding part in the vehicle width direction on the side of the vehicle body
The coordinates of the definition point set at the center in the vehicle width direction and at the lower end of the windshield,
Contains a value to determine
In the outline model construction step, a coordinate system of another vehicle part is automatically derived based on the coordinates of these defined points to construct the outline model. The external specification values further include:
The program according to claim 1, further comprising a value for determining coordinates of a defined point set at a center in a front-rear direction of a wheel housing formed on a side surface of the vehicle body. The external specification values are constituted only by values for determining the coordinates of the definition point,
3. The planning support according to claim 1, wherein, in the outline model building step, the outline model is constructed by automatically deriving coordinates of another vehicle part based only on the coordinates of the definition point. 4. program. A computer-readable storage medium storing the planning support program according to claim 1, 2 or 3. To support vehicle planning, computers
An input step of inputting external specification values defining the external dimensions of the vehicle,
The external shape parameter group relating to the external shape of the vehicle is read, and the external shape parameters included in the read external shape parameter group are changed based on the external specification values and a predetermined rule to construct an external shape model representing the external appearance of the vehicle. Outline model construction process,
A living space model construction step of constructing a living space model representing the occupant's habitability by inputting occupant parameters relating to the seating state of the occupant in the vehicle,
A display step of superimposing and displaying the exterior model constructed in the exterior model construction step and the living space model constructed in the living space model construction step;
Is a planning support method for executing
The external specification values are:
The coordinates of the defined point set in the center in the vehicle width direction and at a specific position on the roof panel,
The coordinates of the definition point set at the center in the vehicle width direction and at the position of the most protruding portion with respect to the front-rear direction of the front bumper and the rear bumper,
The coordinates of the definition point set at the position of the most protruding part in the vehicle width direction on the side of the vehicle body
The coordinates of the definition point set at the center in the vehicle width direction and at the lower end of the windshield,
Contains a value to determine
In the outline model building step, the coordinates of other vehicle parts are automatically derived based on the coordinates of these defined points to construct the outline model. The external specification values further include:
The planning support method according to claim 5, further comprising a value for determining coordinates of a defined point set at a center in a front-rear direction of a wheel housing formed on a side surface of the vehicle body. A planning support device for supporting vehicle planning,
Input means for inputting external specification values defining the external dimensions of the vehicle,
The external shape parameter group related to the external shape of the vehicle is read, and the external shape parameters included in the read external shape parameter group are changed based on the external specification values and a predetermined rule, thereby constructing an external shape model representing the external appearance of the vehicle. External model construction means,
Living space model construction means for constructing a living space model representing the occupant's habitability by inputting occupant parameters related to the seating state of the occupant in the vehicle,
A display unit configured to superimpose and display the exterior model constructed by the exterior model construction unit and the living space model constructed by the living space model construction unit;
With
The external specification values are:
The coordinates of the defined point set in the center in the vehicle width direction and at a specific position on the roof panel,
The coordinates of the definition point set at the center in the vehicle width direction and at the position of the most protruding portion with respect to the front-rear direction of the front bumper and the rear bumper,
The coordinates of the definition point set at the position of the most protruding part in the vehicle width direction on the side of the vehicle body
The coordinates of the definition point set at the center in the vehicle width direction and at the lower end of the windshield,
Contains a value to determine
The planning support device is characterized in that the external model constructing means automatically derives the coordinates of another vehicle part based on the coordinates of these defined points and constructs the external model. The external specification values further include:
The planning support device according to claim 7, further comprising a value for determining coordinates of a defined point set at a center in a front-rear direction of a wheel housing formed on a side surface of the vehicle body. A planning support system that supports vehicle planning,
Input means for inputting external specification values defining the external dimensions of the vehicle,
A database storing a plurality of external parameter groups relating to the external shape of the vehicle,
Selecting means for selecting one of the external shape parameter groups from the database;
External shape model constructing means for modifying an external shape parameter included in the selected external shape parameter group based on the specification value and a predetermined rule to construct an external shape model representing an external appearance of the vehicle;
Living space model construction means for constructing a living space model representing the occupant's habitability by inputting occupant parameters related to the seating state of the occupant in the vehicle,
A display unit configured to superimpose and display the exterior model constructed by the exterior model construction unit and the living space model constructed by the living space model construction unit;
With
The external specification values are:
The coordinates of the defined point set in the center in the vehicle width direction and at a specific position on the roof panel,
The coordinates of the definition point set at the center in the vehicle width direction and at the position of the most protruding portion with respect to the front-rear direction of the front bumper and the rear bumper,
The coordinates of the definition point set at the position of the most protruding part in the vehicle width direction on the side of the vehicle body
The coordinates of the definition point set at the center in the vehicle width direction and at the lower end of the windshield,
Contains a value to determine
The planning support system, wherein the outer shape model constructing means automatically derives the coordinates of another vehicle part based on the coordinates of the defined points and constructs the outer shape model. The external specification values further include:
The planning support system according to claim 9, further comprising a value for determining coordinates of a defined point set at a center in a front-rear direction of a wheel housing formed on a side surface of the vehicle body.

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