JP3777607B2 - Planning support program, method, apparatus and recording medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a program, a method, an apparatus, and a recording medium that support vehicle planning.
[0002]
[Prior art]
Conventionally, when planning a vehicle, a two-dimensional drawing representing the outline of the vehicle is created, and whether the plan is good or bad is determined based on the drawing. And when there was a change in the plan, the drawing was made from scratch again.
[0003]
[Problems to be solved by the invention]
Therefore, in the conventional planning work, a great amount of labor is expended in creating the drawings, and there is a problem that it takes a lot of time and cost. Furthermore, there is a problem that it is difficult to grasp the vehicle image in the two-dimensional drawing.
[0004]
Also, in the past, in the drawing process, there was a tendency for the external shape, which should originally have a high degree of freedom, to be dragged by factors with a low degree of freedom, such as the occupant's living space. It was hard to be born.
[0005]
Also, when planning the external shape, if it is possible to set the shape of the local part too much, there is a problem that the processing for setting the entire vehicle shape becomes complicated, conversely, the shape of the local shape is quite If it cannot be set, there arises a problem that the degree of freedom in setting the vehicle shape is reduced. Accordingly, there has been a demand for planning work that takes into account the balance between the degree of freedom of shape setting and the simplification of the process for setting the shape.
[0006]
The present invention takes into consideration the problems and demands of the prior art as described above. The purpose of the present invention is to provide a plan support program, a plan support method, and a plan that can efficiently and effectively plan a vehicle. It is to provide a 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 planning support program for supporting the planning of the vehicle of the present invention, a planning support method, and a computer-readable recording medium recording the planning support program,On the computer,  By userExternal dimensions that define the vehicle's external dimensionsofinputAcceptAn external parameter group related to the specification value input step and the external shape of the vehicle is read, and the external parameters included in the read external parameter group are automatically changed based on the specification values and a predetermined rule to An external model construction process for constructing an external model representing an external appearance, an external image display process for displaying an external image corresponding to the external model constructed in the external model construction process, and the display in the external image display process A point or line on the outline image displayed above is selected and moved based on a user's operation to deform the outline image, and to deform the outline image in the image deformation process An outer shape model deforming step for deforming the outer shape model in response,Entered by userPassenger parameters related to the seated state of passengers in the vehicleRead out the human model and seat model based on the modelA residential space model construction process for constructing a residential space model representing the occupant's habitability;A structural model construction step of reading out a structural parameter group related to the structure of the vehicle framework, and constructing a structural model based on the structural parameters included in the read out structural parameter group;The outline model;The structural model;A superimposing display step of superimposing and displaying the living space model.The structural model is automatically deformed according to the deformation of the external model in the external model deformation step, while the living space model is not automatically deformed.It is characterized by.
[0008]
  In addition, the planning support apparatus according to the present invention,By userExternal dimensions that define the vehicle's external dimensionsofinputAcceptThe specification value input means and the external parameter group related to the external shape of the vehicle are read out, and the external parameters included in the read out external parameter group are automatically changed based on the specification values and a predetermined rule. Outline model construction means for constructing an outline model representing the appearance, outline image display means for displaying an outline image corresponding to the outline model constructed by the outline model construction means, and display by the outline image display means A point or line on the outline image displayed above is selected and moved based on a user's operation to deform the outline image, and to deform the outline image by the image deformation means An external model deforming means for deforming the external model in response,Entered by userPassenger parameters related to the seated state of passengers in the vehicleRead out the human model and seat model based on the modelA living space model construction means for constructing a living space model representing the occupant's habitability;A structural model construction means for reading out a structural parameter group related to the structure of a vehicle framework and constructing a structural model based on the structural parameters included in the read structural parameter group;The outline model;The structural model;Superimposed display means for displaying the living space model in a superimposed manner;The structural model is automatically deformed in response to the deformation of the external model by the external model deforming means, while the living space model is not automatically deformed.It is characterized by.
[0009]
  Furthermore, the planning support system according to the present invention includes:By userExternal dimensions that define the vehicle's external dimensionsofinputAcceptSpecification value input means,By userPassenger parameters related to the seated state of passengers in the vehicleofinputAcceptCrew parameter input means, a database storing a plurality of external parameter groups related to the external shape of the vehicle, selection means for selecting one external parameter group from the database, and external parameters included in the selected external parameter group An external model construction means for constructing an external model representing the external appearance of the vehicle by changing, and an external parameter group related to the external shape of the vehicle are read out, and the external parameters included in the read out external parameter group are set as the specification value and the predetermined value. Outline model construction means for automatically constructing an outline model representing the appearance of a vehicle based on a rule, and an outline image for displaying an outline image corresponding to the outline model constructed by the outline model construction means on a display The display means and the outline image display means A point or a line on the outline image displayed on the spray is selected and moved based on a user's operation to deform the outline image, and the deformation of the outline image by the image deformation means An outer shape model deforming means for deforming the outer shape model according toEntered by the userCrew parametersRead out the human model and seat model based on the modelA living space model construction means for constructing a living space model representing the occupant's habitability;A structural model construction means for reading out a structural parameter group related to the structure of a vehicle framework and constructing a structural model based on the structural parameters included in the read structural parameter group;The outline model;The structural model;Superimposed display means for displaying the living space model in a superimposed manner;The structural model is automatically deformed in response to the deformation of the external model by the external model deforming means, while the living space model is not automatically deformed.It is characterized by.
[0010]
Here, it is preferable that the outline image display step (means) displays the points that can be selected and moved by the user in the image deformation step (means) so as to be identifiable as deformation points.
[0011]
The external image display step (means) displays the first deformation point and the second deformation point as the deformation points so as to be distinguishable from each other, and the image deformation step (means) includes selection of the first deformation point and It is also preferable to automatically move the second deformation point following the movement.
[0012]
It is also preferable that the second deformation point follows the first deformation point while maintaining a relative positional relationship with the first deformation point.
[0013]
The outline image display step (means) displays a line connecting the first deformation point and the second deformation point as a deformation line, and the deformation line has a shape by moving the first deformation point. It is also suitable to move while holding.
[0014]
It is also preferable that the deformation points include four corner points of the front window glass and the rear window glass.
[0015]
It is also preferable that the deformation point includes an inflection point of the side window glass.
[0016]
It is also preferable that the deformation point includes an inflection point of a bumper.
[0017]
It is also preferable that the deformation points include points at both ends of the front end portion of the bonnet.
[0018]
The outline image display step displays, as the first deformation point, a point in the vehicle width center of the upper edge of the front window glass and the rear window glass in the outline image, and the upper edge of the front window glass and the rear window glass. Points at both ends of the front window glass are displayed as the second deformation points, and the image deformation step is performed by interlocking the points at both ends of the upper edge of the front window glass with the vehicle width center points of the upper edge of the front window glass, It is also preferable that the points at both ends of the upper edge of the rear window glass are interlocked with the vehicle width center point of the upper edge of the rear window glass.
[0019]
The first deformation point includes a point in the vehicle width center of the front edge of the bonnet, and the second deformation point linked to the first deformation point preferably includes points at both ends of the front edge of the bonnet. .
[0020]
The image display step (means) displays a line that can be selected and moved by the user in the image deformation step (means) as a deformation line, and the deformation line is selected and moved in the image deformation step (means). In the outer shape model deforming step (means), it is also preferable to deform the outer shape model in accordance with the movement of the deformation line.
[0021]
The external image display step (means) displays the first deformation line and the second deformation line as the deformation lines so as to be distinguishable from each other, and the image deformation step (means) includes selection of the first deformation line and It is also preferable to automatically move the second deformation line following the movement.
[0022]
It is also preferable that the second deformation line moves following the first deformation line while maintaining the relative positional relationship and the line shape with respect to the first deformation line.
[0023]
The outline image display step (means) displays, in the outline image, the upper end line of the front end face of the front bumper in the displayed vehicle as the first deformation line, and the upper end face of the front bumper, the front grille, and the headlamp are arranged. It is also preferable that an intersection line with the front end surface is displayed as the second deformation line, and the image deformation step (means) moves the intersection line following the movement of the upper end line of the front end surface of the front bumper. It is.
[0024]
The outline image display step (means) displays the first deformation line, the second deformation line, and the third deformation line as the deformation lines so that they can be distinguished from each other, and the image deformation step (means) includes the first deformation line. It is also preferable that the second deformation line is automatically moved following the selection and movement of the line, and the third deformation line is automatically moved following the selection and movement of the second deformation line. .
[0025]
When the second deformation line is selected and moved, it is preferable that the first deformation line does not move and the third deformation line follows and moves.
[0026]
The outline image display step (means) displays, in the outline image, an upper end line of a front bumper front end face of the displayed vehicle as the first deformation line, and an upper end face of the front bumper, a front grille, and a headlamp are arranged. A line of intersection with the front end surface is displayed as the second deformation line, a line of intersection between the front end surface on which the front grille and the headlamp are arranged and a plane forming a bonnet is displayed as the third deformation line, The image deformation step (means) automatically moves the second deformation line and the designated intersection line following the selection and movement of the upper end line as the first deformation line, and the second deformation line as the second deformation line. It is also preferable to automatically move the intersection line as the third deformation line following the selection and movement of the intersection line.
[0027]
In the image deformation step (means), it is also preferable that the outer shape image is deformed so as to be plane symmetric with respect to a plane passing through the vehicle width center of the vehicle displayed as the outer shape image.
[0028]
【The invention's effect】
  The present inventionInAccording to this aspect, it is possible to construct a vehicle external model by reading out the external parameter group related to the external appearance of the vehicle and changing the external parameter included in the read external parameter group. In addition, occupant parameters related to the seating state of occupants in the vehicleThe human model and seat model are read out based on the model, and the occupant's comfortability is expressed based on the model.A living space model can be constructed.Furthermore, a structural parameter group related to the structure of the vehicle framework can be read, and a structural model can be constructed based on the structural parameters included in the read structural parameter group.And these outline models, Structural modelIn addition, the living space model can be displayed in a superimposed manner.
[0029]
Therefore, when reconsidering the plan, it is sufficient to change the external parameters when reexamining the external shape of the vehicle. When reexamining the internal space of the vehicle, it is only necessary to adjust the occupant parameters. Can be very efficient.
[0030]
That is, in the past, the outer shape was determined so as not to obstruct the driver's view on the two-dimensional drawing and to give the passenger a feeling of pressure. Since it is possible to construct the space model independently of the space model and adjust the living space model, it is possible to effectively set the outer shape with free ideas without being restricted by the constraints of the internal space.
[0031]
For example, even if the outer shape of the vehicle includes the possibility of obstructing the driver's field of view or giving a sense of pressure to the occupant, the seat angle, interior coloring, etc. By adjusting, it is possible to avoid these problems. Furthermore, it is possible to allow the occupant to allow a slight feeling of pressure and tightness. This is because interference between a person and an object becomes 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.
[0032]
Furthermore, since the external model constructed in the external model construction process and the residential space model constructed in the residential space model construction process can be displayed in a superimposed manner, whether or not an occupant fits in the passenger compartment space, etc. Verification of packaging feasibility can be performed quickly.
[0033]
  In addition, when planning the external shape, the external model automatically created from the input specification values can be locally deformed on the display, so the process for setting the external shape is simplified, The degree of freedom in setting the shape can be compatible, and the planning of the external shape can be performed very efficiently.In addition, the structural model is automatically deformed according to the deformation of the outer model, while the living space model is not automatically deformed. Thereby, it is possible to plan the outer shape and the living space with a more free idea.
[0034]
In addition, according to the present invention (claims 2 and 22), the point that can be selected and moved by the user is displayed in an identifiable manner as the deformation point, so that the point that can be deformed on the screen among the external shapes is clarified, It is possible to improve the usability of the user when deforming the external model.
[0035]
In addition, according to the present invention (claims 3 and 23), since the deformation points that can be selected and moved by the user are weighted and the tracking relationship in one direction is defined, the user can easily deform the outer shape model. Can improve the efficiency of planning.
[0036]
Further, according to the present invention (Claims 4 and 24), depending on which of the two deformation points is selected and moved, the outer shape is changed while the relative positional relationship is changed, or the relative positional relationship is not destroyed. The point can be moved, and the user can more easily change the outer shape model, and the planning work can be made more efficient.
[0037]
According to the present invention (Claims 5 and 25), depending on which of the two deformation points that generate one deformation line is selectively moved, the deformation line is deformed or moved without being deformed. The user can easily deform the outer shape model, and the planning work can be made more efficient.
[0038]
Further, according to the present invention (Claims 6 and 26), the shapes of the front and rear windows can be freely changed on the screen. For example, when it is desired to enlarge the window to ensure the driver's field of view, it is easy. Therefore, the outer shape model can be deformed, and the planning work can be made more efficient.
[0039]
Further, according to the present invention (Claims 7 and 27), the shape of the side window can be freely changed on the screen. For example, when it is desired to enlarge the window in order to reduce the occupant's feeling of pressure, it is easy. Therefore, the outer shape model can be deformed, and the planning work can be made more efficient.
[0040]
According to the present invention (claims 8 and 28), the shape of the bumper can be freely changed on the screen. For example, when it is desired to enlarge the bumper in order to clear the collision standard, the outer shape model can be easily obtained. This makes it possible to make the planning work more efficient.
[0041]
Further, according to the present invention (claims 9 and 29), the shape of the bonnet can be freely changed on the screen. For example, when it is desired to lower the bonnet in order to secure the driver's view, for example. Therefore, the outer shape model can be deformed, and the planning work can be made more efficient.
[0042]
In addition, according to the present invention (claims 10 and 30), the upper edges of the front window and the rear window can be moved without changing their shapes, so that the driver's field of view is maintained without deteriorating the image of the vehicle. The window can be enlarged to ensure the efficiency of planning.
[0043]
Further, according to the present invention (claims 11 and 31), the front end edge of the bonnet can be moved without changing the shape thereof, so that the driver's view can be ensured without impairing the image of the vehicle. In addition, the bonnet can be reduced and the planning work can be made more efficient.
[0044]
Further, according to the present invention (claims 12 and 32), the line that can be selected and moved by the user is displayed as a deformable line so as to be identifiable, so that the line that can be deformed on the screen among the external shapes is clarified, It is possible to improve the usability of the user when deforming the external model.
[0045]
Further, according to the present invention (claims 13 and 33), the user can easily deform the outer shape model by weighting the deformation line that can be selectively moved by the user and defining the unidirectional tracking relationship. Can improve the efficiency of planning work.
[0046]
Further, according to the present invention (claims 14 and 34), depending on which of the two deformation lines is selected and moved, the outer shape is changed while the relative positional relationship is changed, or the relative positional relationship is not destroyed. The line of the book can be moved, and the user can easily deform the outer shape model, and the planning work can be made more efficient.
[0047]
Further, according to the present invention (claims 15 and 35), the front bumper can be freely moved on the screen without changing the positional relationship between the front grille and the headlamp. For example, when you want to push the bumper forward without changing it, you can easily change the outer shape model, which makes planning work more efficient.
[0048]
In addition, according to the present invention (claims 16 and 36), the deformation line that the user can selectively move is weighted in three stages, and the following relationship in one direction is defined, so that the user can more easily deform the outer shape model. This makes it possible to improve the efficiency of planning work.
[0049]
Further, according to the present invention (Claims 17 and 37), depending on which of the three deformation lines is selected and moved, the outer shape is changed while changing the relative positional relationship, and the relative positional relationship is not destroyed. The line of the book can be moved, and the user can easily deform the outer shape model, and the planning work can be made more efficient.
[0050]
In addition, according to the present invention (claims 18 and 38), the front bumper can be freely moved on the screen without changing the positional relationship between the front grille, the headlamp, and the bonnet. When you want to push the bumper forward without greatly changing the impression, you can easily change the external model, which makes planning work more efficient.
[0051]
Further, according to the present invention (claims 19 and 39), the outer shape model can be deformed while maintaining symmetry with respect to the plane passing through the center of the vehicle width of the vehicle, so that the outer shape can be easily maintained while maintaining a natural shape as a vehicle. The model can be transformed, and the planning work is made more efficient.
[0052]
DETAILED DESCRIPTION OF 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 means for realizing the present invention, and the present invention can be applied to a modified or modified embodiment described below without departing from the spirit of the present invention. In the present specification, the external model, the living space model, and the structural model are a collection of coordinate data representing the appearance of the vehicle, the state of the seat and the occupant, and the skeleton structure, respectively. The specification value refers to a dimension that determines the vehicle shape, and includes, for example, the overall height, the overall width, the overall length, and the like, but does not include an occupant parameter that determines a living space. In addition, the vehicle type refers to a vehicle type such as a sport, a sedan, or a truck, and the vehicle type refers to a brand (trademark) of a commercialized vehicle.
[0053]
(Overall system configuration)
First, the overall configuration of the planning support system as the present embodiment will be described.
[0054]
FIG. 1 is a diagram illustrating a configuration of a planning support system 100 according to this embodiment.
[0055]
The plan support system 100 in FIG. 1 includes a computer 1 and a database server 2 as plan support devices connected to a network. Further, the computer 1 includes a CPU 11, a ROM (Read Only Memory) 13, a RAM (Random Access Memory) 14, an external storage unit 15, an input unit 16, a display unit 17, an image processing unit 18, and a communication unit 19. Are connected by a system bus 12.
[0056]
The CPU 11 executes arithmetic processing as a general computer and information processing for supporting vehicle planning.
[0057]
ROM13Stores at least a boot program for starting 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 is used to support planning and verification of new vehicles.Planning support program 60Is stored. 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 removable 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.
[0058]
The input unit 16 is a device such as a keyboard or a mouse that inputs commands and data from the outside. The display unit 17 outputs characters and image data that are arithmetically processed by the image processing unit 18 based on a control command from the CPU 11. Devices such as liquid crystal displays and CRTs. 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 via a wireless or wired communication line (for example, the Internet network or a mobile phone network). Computer systems andDatabase server 2Communicating with other devices, it is possible to send and receive programs and data remotely.
[0059]
FIG. 2 is a diagram illustrating data included in the computer 1 and the database server 2 included in the planning support system.
[0060]
As shown in FIG. 2, the database server 2 includes an outer shape database 2a in which outer shape parameter groups relating to the three-dimensional external shape of the vehicle are classified and stored for each vehicle type, and a structure relating to the three-dimensional structure and cross-sectional shape of the vehicle framework. Crew that stores several types of occupant models defined by the structure database 2b in which parameter groups are classified and stored for each vehicle type and occupant sizes (standards for adults and children) in accordance with domestic and foreign standards. It includes a database 2c and a finished product database 2d that stores parameters of the completed vehicle.
[0061]
The computer 1 creates a design table 1a that includes various specification values related to the vehicle to be planned, information on the seating position of the occupant, and the like based on user input. Then, by accessing the database server 2 based on the design table 1a, reading out and transforming desired data (parameter group), three models called a reference model 1b, an external model 1c, and a structural model 1d are constructed, Further, an overall model 1e is constructed by superimposing these three models.
[0062]
In the design table 1a, an occupant seating position (hip point) and a seat arrangement (the number of seats such as a first row, a second row, and a third row seat) are input as occupant parameters relating to the seating state of the occupant in the vehicle. The computer 1 combines the human model and the seat model read from the occupant database 2c on the basis of the occupant parameters and transforms them to construct a living space model 1f that represents the occupant's comfortability. 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.
[0063]
Further, a vehicle reference model 1g that defines the position of the living space model 1f in the vehicle is constructed from the full length, full width, full height, wheelbase, etc. of the vehicle input to the design table 1a. Further, the eye point indicating the position of the driver's eyes and the upper end determined based on the driver's field of view to be secured at the minimum, the lower end of the cowl top point determined based on the input specification value The 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.
[0064]
In the computer 1, the reference model 1b can be drawn in the three-dimensional space and displayed on the display unit 17, and the reference model 1b can be displayed on the three-dimensional space using the input unit 16 such as a pointing device. The seating posture of the occupant included in the vehicle can be adjusted.
[0065]
Further, the computer 1 selects an external parameter group of the vehicle type from the external database 2a based on the vehicle type (any of hatchback, minivan, sedan, sport, open, and truck) stored in the design table 1a and reads it. put out. Then, using various specifications (full length, full width, full height, wheel base, front and rear overhang) stored in the design table 1a, predetermined external parameters (bumper tip position coordinates and roof top) included in the external parameter group are used. The general outline model 1c is constructed along the specifications. The computer 1 can draw the external model 1c in a three-dimensional space and display it on the display unit 17, and uses the input unit 16 such as a pointing device, for example, in the three-dimensional space. Can be transformed.
[0066]
Further, the computer 1 selects and reads out a structure parameter group from the structure database 2b based on the vehicle type and the vehicle frame configuration stored in the design table 1a. Then, by using various specifications (cross-sectional shape, material, weight, strength, etc.) stored in the design table 1a, predetermined structural parameters included in the structural parameter group (the external shape of the framework that appears in the external appearance and the cross-sectional shape of the framework) ) Is changed and a structural model according to the specifications is constructed. Further, the computer 1 can draw the structural model 1 d in a three-dimensional space and display it on the display unit 17.
[0067]
Further, the computer 1 can construct the overall model 1e by combining the constructed reference model 1b, outer shape model 1c, and structural model 1d, draw the overall model 1e in a three-dimensional space, and display it on the display unit 17. It is.
[0068]
Next, a program included in the computer 1 will be described.
[0069]
FIG. 40 is a diagram showing a configuration of a planning support program that realizes the planning support system of the present embodiment.
[0070]
The design table 1a can be created by, for example, spreadsheet software 40 that operates on an operating system. The various models 1b, 1c, and 1d can be created by the three-dimensional CAD software 50 that extracts and calculates values from the design table 1a created by the spreadsheet software 40.
[0071]
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, a structural model incorporated in the three-dimensional CAD software. A construction program 64, a three-dimensional image generation and display program 65.
[0072]
The design table creation program 61 includes a function for displaying a graphical user interface that allows the 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.
[0073]
Each of the 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 outer shape database 2a,Structure database 2bHas a function of reading out a parameter group included in and automatically changing a predetermined parameter.
[0074]
Here, the design table creation program and other programs are executed on different software. However, the present invention is not limited to this, and the design table creation function is included in the planning support software. All of the reference, outer shape, structural model construction function, image generation, and display function may be installed.
[0075]
FIG. 3 is a view 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.
[0076]
Moreover, FIG. 4 is a figure which shows the example of a display screen at the time of taking out only a living space model from a reference | standard model. Here, the living space model is a set of coordinate data with the center of the left front wheel as the origin. On the other hand, the vehicle reference model is also coordinate data with the same point as the origin, and is displayed superimposed on the origin as shown in FIG.
[0077]
FIG. 5 is a diagram showing 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 vehicle length, width, height, wheelbase, and other vehicle values, and multiple vehicle types such as wagons and sedans. From the input parameters, 3D image data as shown in FIG. Automatically generated by processing and displayed.
[0078]
FIG. 6 is a diagram showing 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 the frame structure and parameters indicating the cross-sectional shape of each part such as a front pillar and a center pillar, which are input to the design table. From the input parameters, the three-dimensional model as shown in FIG. Image data is automatically generated by image processing and can be displayed.
[0079]
FIG. 7 shows an image display example of a completed model obtained by superimposing the reference model, the outer shape model, and the structural model, and FIG. 8 shows an image display example when the reference model and the structural model are superimposed. Each model has a reference point, and is displayed as shown in FIGS. 7 and 8 by overlapping the reference points. Note that the reference point for superimposition will be described in detail in the section [Reference Point for Model Overlay Display] below.
[0080]
By superimposing the reference model and the outer model, it is possible to verify the packaging state of the vehicle (occupant's head clearance and pressure) and visibility. Furthermore, by further displaying the structural model in a superimposed manner, it is possible to verify the collision performance, the vehicle body rigidity, and the like, and to perform detailed evaluation such as the driver's view range viewed from the vehicle interior.
[0081]
The vehicle reference model, the outer shape model, and the structural model have common parameters, and are changed in conjunction with each other by the change. On the other hand, the living space model does not have parameters common to the outer shape model and the structural model, and does not work even if the outer shape model or the structural model is changed. Thus, the outer shape model can be constructed independently of the living space model, and the outer shape can be set effectively 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 outer shape.
[0082]
9 and 10 show other image display examples of the completed model in which the reference model, the outer shape model, and the structural model are superimposed. Unlike the case of FIG. 7, the outline model is displayed semi-transparently in the display example of FIG. 9, and the outline model is completely transparently displayed in the display example of FIG.
[0083]
In this example, because the input parameters such as the total height and the total length are too small to accommodate the living space model, the head of the occupant protrudes from the vehicle outer shape. In these drawings, only the interference portion is displayed in a different color so that the interference state between the living space model and the outer shape model can be clearly identified.
[0084]
As a result, it is possible to visually verify that the head clearance of the occupant and the driver's visibility are insufficient, and each model can be changed based on the verification result. That is, when the seating position and seating position of the occupant determined by the living space model are unreasonable with respect to the passenger compartment 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 section of <Local deformation rule>.
[0085]
As a method for discriminating and displaying the interference portion, in addition to displaying in different colors, methods such as calling attention with an arrow or generating a warning sound are conceivable.
[0086]
(Program structure)
Below, the function of each program contained in the plan support program 60 concerning this embodiment is demonstrated.
[0087]
[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 interior dimensions and visibility conditions, tire wheel dimensions, under-floor dimensions, and occupant placement conditions. is there.
[0088]
The parameters in the length direction and the vertical direction input in the following table are all values for deriving the coordinate position of each part when the front wheel axle is the origin. The parameters in the width direction input in the following table are based on the center plane of the vehicle. In other words, when all parameters are properly entered into the design table, models such as the vehicle's outer shape, living space (occupants and seats), windshields, etc. are displayed on the three-dimensional coordinates with the front wheel axle and the vehicle center plane as the origin. It becomes possible to draw.
[0089]
<Vehicle type selection>
FIG. 20 shows an example of a model & type selection interface included in the design table creation program 61. In other words, when building an external model from this interfaceCar typeSelect the pillar configuration included in the structural modelbe able to.
[0090]
A plurality of pillar configurations as structural parameter groups are prepared for each vehicle type in the database as shown in the figure.
[0091]
The vehicle type preferably includes at least two of a minivan, a station wagon, and a sedan. In this example, there are six vehicle types: hatchback, minivan / wagon (station wagon), sedan, sport, open, and truck. Are typed.
[0092]
An outline parameter group (three-dimensional coordinate data constituting the outline of the vehicle) is stored in the database for each vehicle type, and selection of the vehicle type directly corresponds to selection of the external parameter group. In addition, a structural parameter group (three-dimensional coordinate data constituting the framework) 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 directly correspond to the selection of the structural parameter group. .
[0093]
Here, the vehicle type is simultaneously selected by selecting one of the pillar configuration icons shown in the right column. Of course, it is good also as an interface which can perform the step which selects a vehicle type, and the step which selects a pillar structure independently. In either case, when an external parameter group (vehicle type) is selected, a structural parameter group (pillar configuration corresponding to the vehicle type) of the same classification as the selected vehicle type is automatically selected from the structural database.
[0094]
Here, the pillar configuration is narrowed down by selecting the vehicle type. However, the pillar configuration that can be further selected according to the parameters (for example, the total length, etc.) input in another input table may be narrowed down. good. In that case, the pillar structure is stored for each size of the vehicle in the structure database.
[0095]
Specifically, in FIG. 20, in the hatchback and the wagon, in FIG. 20, a front auxiliary pillar 204 is further provided between the front pillar 201 and the center pillar 202 on the basis of the vehicle type having the front pillar 201, the center pillar 202, and the rear pillar 203. Each vehicle type having auxiliary pillars 204 and 205 is defined between the front pillar 201 and the center pillar 202, and between the center pillar 202 and the rear pillar 203. Has been.
[0096]
Further, in the sedan, a vehicle type that does not have the center pillar 202 (hard top type), and a vehicle type that further has a pillar 205 between the center pillar 202 and the rear pillar 203, based on the vehicle type having the front pillar 201, the center pillar 202, and the rear pillar 203. Is defined.
[0097]
In sports and trucks, a vehicle type that does not have the center pillar 202 is defined with reference to a vehicle type that has the front pillar 201, the center pillar 202, and the rear pillar 203.
[0098]
In the open, 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.
[0099]
As described above, by making it possible to select a vehicle type similar to the planned vehicle type, it is possible to reduce the man-hour required for shape deformation of the outer model, improve the verification accuracy, and improve the user's work efficiency.
[0100]
Also,Car typeSince a structural model is constructed by selectively reading one of a plurality of pillar configurations prepared for each user,Car typeSince structural parameter groups can be narrowed down simply by selecting, planning work can be made more efficient.
[0101]
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 from the first column to the third column. In that case, it is possible to input the number of seats in three numbers. For example, (2,0,0) for 2 seats, (2,3,0) for general 5-seaters, (2,3,2) for 7-seaters Can be expressed as
[0102]
Furthermore, you may provide the interface which can input the number of doors.
[0103]
<External dimensions>
FIG. 11 shows an example of an external dimension input interface included in the design table creation program 61. 11A is a vehicle specification value input table, and FIGS. 11B and 11C are a vehicle front view image and a side view image for indicating corresponding portions of parameters input in the input table. is there. Here, the vehicle specification values include a wheel base 1101, a total width 1102, a total height 1103, a front overhang 1105, a rear overhang 1106, a horizontal position 1107 of the cowl point CW, a vertical position 1108 of the cowl point CW, and a windshield inclination 1109. It is.
[0104]
In the vehicle specification value, the front overhang 1105 is a distance between the front end of the vehicle projecting forward from the front axle AF and the front axle AF, and the rear overhang 1106 is the rear of the vehicle projecting 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 a horizontal distance between the center position in the vehicle width direction of the lower end of the windshield and the front axle AF, and the vertical position 1108 of the cowl point CW is a center position of the lower end of the windshield in the vehicle width direction. This is the vertical distance between the front axles AF. Further, the windshield inclination 1109 is an inclination angle formed between a vertical line passing through the cowl point position and the windshield.
[0105]
The total length 1104 is automatically calculated by adding the wheel base 1101, the front overhang 1105, and the rear overhang 1106 (1104 = 1101 + 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 empty, but basically, based on GL2, other than the reference model and the total height The external model is set.
[0106]
As the outer dimensions, in addition to the above parameters, the upper and lower end reference positions of the front bumpers (parameters common to point C1 and point D1 of the outer model to be described later) determined in advance by standards such as domestic and foreign collision safety standards, etc. Input may be possible. In that case, bumper arrangement reference ranges corresponding to these positions are displayed (see FIG. 22C).
[0107]
≪Cowl point restrictions≫
FIG. 17 is a diagram for explaining restrictions on the horizontal position 1107 and the vertical position 1108 of the cowl point CW of the vehicle reference model. Although the horizontal position 1107 and the vertical position 1108 of the cowl point CW can be input in FIG. 11, they cannot be arranged completely at arbitrary positions, and are subject to restrictions such as the field of view.
[0108]
That is, as a first condition, of the viewing conditions input in FIG. 13, it should not interfere with the forward lower viewing field 1302.
[0109]
As a second condition, the dash panel upper end position DP defined in FIG. 12E must be lower than a straight line that forms a predetermined acute angle 1701 forward and upward.
[0110]
<In-car dimensions>
FIG. 12 shows an example of an in-vehicle dimension input interface included in the design table creation program 61. 12A is an input table for in-vehicle dimensions, and FIGS. 12B, 12C, and 12D are front view images and side views for showing corresponding parts of parameters input in the input table. It is an image and a bottom view image. FIG. 12E is an image in which the periphery of the dash panel is displayed in an enlarged manner in order to show the dimension location for determining the dash panel position.
[0111]
The dimensions determining the comfort in the vehicle can be divided into a parameter relating to the front row occupant, a parameter relating to the second row occupant, a parameter relating to the third row occupant, and a parameter relating to the dash panel. When there are no seats in the second row and the third row, it is not necessary to input parameters relating to passengers in the second row and the third row. Here, it is assumed that the number of sheets is three rows.
[0112]
Among these, the parameters relating to the front row occupant include the following.
1201: Head position of front row occupant (length of straight line extending upward from front row hip point HP1 and inclined backward by a predetermined minute angle with respect to the vertical direction)
1202: Vertical distance between front row hip point HP1 and cowl point CW
1203: Vertical distance between the front row hip point HP1 and the ground contact surface GL2 when riding
1204: Vertical distance between the front row hip point HP1 and the floor panel
1205: Distance between front row hip point HP1 and vehicle width center W
1206: Front row torso angle
1207: Horizontal distance between front axle AF and upper end of accelerator pedal
In addition, parameters relating to the second row occupant include the following.
1208: Top position of second row occupant (length of straight line extending upward from 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 second row hip point HP2 and second row occupant 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: Second row torso angle
A driver's eye position (eye point) EP is automatically derived from the top row position 1201 of the front row occupant.
[0113]
Further, the parameters relating to the third row occupant include the following.
1215: Head position of third row occupant (length of straight line extending upward from third row hip point HP3 and inclined backward by a predetermined minute 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: Third row torso angle
1221: Distance between third row hip point HP3 and third row occupant heel
The following parameters are related to the dash panel.
1222: Horizontal distance between front axle AF and front end of dash panel DP
1223: Horizontal distance between front axle AF and rear end of dash panel DP
1224: Vertical distance between front axle AF and front end of dash panel DP
By inputting the in-vehicle dimensions as described above, it is possible to individually set each seat position on the absolute space of the living space model based on the front row to the third row hip points HP1 to HP3.
[0114]
The reference of the position in the vehicle of the living space model differs depending on which point is used as the origin, so that a difference occurs in the overlapping state with the outer shape model depending on the origin position.
[0115]
That is, a point where it is desired that the interference between the living space model and the outer model when overlapping with the outer model should be selected as the origin.
[0116]
≪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 as 1203 and the position in the width direction is defined as 1205, but a field for directly inputting the position in the vehicle full length direction (horizontal position). Is not prepared.
[0117]
Here, it is assumed that the position in the length direction is derived by calculation from other parameters directly input in FIG. 12, and the method will be described below.
[0118]
FIG. 16 is a diagram illustrating a method for determining the horizontal position of the driver's hip point HP1.
[0119]
The table in FIG. 12 defines a horizontal distance 1207 between the front wheel axis AF, which is the origin, and the upper end position (ball point) of the accelerator pedal. The height 1204 of the driver's hip point HP1 from the heel point is also defined by the table in FIG. In this embodiment, the program configuration is such that 1601 in the figure is derived by substituting 1204 for Z in the following equation.
[0120]
1601 = k1 + k2 × Z−k3 × Z²
Note that k1, k2, and k3 are predetermined coefficients. Here, the above formula is adopted based on empirical rules. However, the present invention is not limited to this, and 1601 may be obtained by another formula, and can be directly input in the table of FIG. It may be a program configuration.
[0121]
<Visibility conditions>
FIG. 13 shows an example of the viewing condition input interface included in the design table creation program 61. FIG. 13A is an input table of visibility conditions to be secured, and FIG. 13B is an internal side view image of a vehicle for showing corresponding parts of parameters input in the input table.
[0122]
The parameters related 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 (rear)
1304: Angle to be secured downward from the horizontal plane passing through the driver's eye point EP (rear)
1301 automatically defines and displays the lowest position where the front header (panel on the upper end of the windshield) can be placed. Similarly, the lowest position at which the rear header (panel at the upper end of the rear glass) can be arranged is automatically defined and displayed by 1303.
[0123]
<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 tire and wheel dimensions, and FIGS. 14B and 14C are vehicle interior side views for showing corresponding parts of parameters input in the input table. It is a visual image and a vehicle interior planar image. 14D and 14E are side view images around the wheel housing.
[0124]
The tire and wheel related dimensions input here are as follows.
1401: Tire outer diameter
1402: Effective tire diameter
1403: Wheel width
1404: Vertical distance between the wheel center of the front wheel when empty and the wheel center when riding a passenger
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 wheel outer diameter and wheel housing
・ 1409: Wheel housing diameter
1410: Tire wheel outer diameter
<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 in the case of a three-row sheet. FIG. 15A is an input table for inputting various dimensions under the floor. In order to show the corresponding parts of the parameters input in the input table, FIG. FIG. 15C shows a cross-sectional view image around the side sill.
[0125]
The below floor related dimensions input here are as follows.
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 second row floor panel and axle surface
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 recess and the rear axle AR
1511: Vertical distance between the third row floor panel and the rear axle AR
1512: Side sill-vehicle width center W distance
・ 1513: Side sill SS width
・ 1514: Side sill SS height
1515: Vertical distance between side sill SS and floor panel
≪How to determine front header and rear header positions≫
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, and 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, an intersection of a straight line 1301 that forms a predetermined acute angle upward from the horizontal direction around the viewpoint EP and the glass surface as one vertex, and the glass surface is A parallelogram with one side is defined as the lowest position of the front header. At this time, the condition is that it is positioned above the straight line L that is the basis of the feeling of pressure. The position of the front header in the vehicle width direction is set at the vehicle width center W.
[0126]
Further, as shown in FIG. 19, the horizontal position and vertical position of the rear header are, for example, above a straight line 1304 that forms a predetermined minute acute angle from the horizontal direction around the viewpoint EP, It is constrained above the head clearance (distances 1208 and 1215 from HP2 and HP3).
[0127]
The detailed cross-sectional shapes of the front header and the rear header are defined by a structural model described later.
[0128]
In the above design table, parameters in the length direction and the height direction with the front wheel axis AF as the origin are input, but the present invention is not limited to this, and the engine room and the vehicle compartment are partitioned. Each position information (each distance) may be input with the point on the dash panel, the front end of the bumper, or the cowl point CW as the origin, and any of these points can be selected as the origin. It doesn't matter.
[0129]
<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 inputting cross-section selection and various dimensions. FIG. 24 (b) shows a vehicle exterior perspective image in order to show corresponding parts of parameters input in this input table. FIG. 24C shows an image of each cross section.
[0130]
In the case of the wagon type vehicle shown in the figure, as a framework structure, 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 Each parameter such as plate thickness, material, strength, and weight can be input and set in addition to parameters 2401 to 2403 for determining the cross-sectional shape shown in FIG.
[0131]
[Standard model construction program]
The reference model construction program 62 generates a living space model by taking out parameters related to in-car dimensions, visibility parameters, and parameters under the floor from the design table as described above. Specifically, the occupant parameters such as the number of seats and the hip point position for each seat regarding the seating state of the occupant in the vehicle are input, and the human model representing the occupant according to the input occupant parameter and the seat representing the seat 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 relating to the visibility. To do.
[0132]
In addition, a vehicle reference model is generated from parameters relating to external dimensions. Furthermore, a windshield model is generated in which the cowl point (CW) derived from the parameters related to the external dimensions is the lower end and the front header derived based on the visibility parameter (front upper field of view) and the windshield angle 1109 is the upper end. To do.
[0133]
Then, a reference model is generated by combining these models.
[0134]
In addition, the reference model construction program can pass the generated coordinate data of each model to the image generation / display program for three-dimensional display on the display, and accepts input from the pointing device from the user in that state. Then, it is determined which command to change which part, and the coordinate data is changed according to the command.
[0135]
In other words, the user can change the displayed image by selecting and moving the part of the three-dimensional image displayed on the display with a pointing device such as a mouse and changing the coordinate data in the memory according to the deformation. can do.
[0136]
Accordingly, 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 packaging after reproducing the optimal driving posture of the occupant that differs depending on the category of the planned vehicle. In addition, tuning verification of the driving posture can be easily performed for various requirements such as visibility standards, safety standards, and reduction of burden on passengers.
[0137]
Of course, it is also possible to transform the reference model by activating the design table generation program again and changing the values input to the design table.
[0138]
In addition, the reference model construction program can display the visibility securing reference range determined from the viewpoint EP of the driver in the reference model. Therefore, it is possible to easily verify from the vehicle planning stage whether the visibility range, which is an important factor in verification of vehicle packaging feasibility, is guaranteed. Can alleviate concerns that lead to significant corrections at the stage.
[0139]
Further, the reference model construction program may display at least one of the front header, the rear header, the pillar, and the lower end of the 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 changes in the viewpoint EP and the position of the occupant so as to leave a predetermined visibility securing reference range determined from the driver's viewpoint EP and a predetermined compression feeling suppression reference range from the occupant. . Therefore, it can be easily verified from the vehicle planning stage whether or not the range of suppression of pressure, which is an important factor in verification of vehicle packaging feasibility, is guaranteed. Can eliminate concerns that could lead to significant revisions later.
[0140]
The reference model displays a bumper arrangement reference range corresponding to a change in the front bumper upper and lower reference positions (point C1 and point D1) in accordance with a parameter change of an outer shape model to be described later. Therefore, it is possible to easily verify from the vehicle planning stage whether the bumper's vertical position range, which is an important factor in the verification of vehicle packaging feasibility, is guaranteed. It is possible to dispel concerns that would lead to significant corrections such as failure to establish regulations at a later stage.
[0141]
The living space model is not changed depending on which outer shape parameter group (vehicle type) is selected in the outer shape model construction program.
[0142]
[Outline model construction program]
The outer shape model construction program 63 reads out the base outer shape coordinate data from the database based on the vehicle type data included in the design table created by the design table creation program 61, and further receives the outer shape parameters (various parameters inputted into the design table). Based on the original value) and a predetermined rule, the outer shape coordinate data is changed to construct an outer shape model.
[0143]
In addition, the outline model construction program can pass the generated outline model coordinate data to the image generation / display program for three-dimensional display on the display, and accepts input from the pointing device from the user in that state. Then, it is determined whether the input is an instruction to change which part and how, and the coordinate data is changed according to the instruction.
[0144]
In other words, the user can deform the displayed vehicle outer shape image by selecting and moving the portion of the three-dimensional outer shape 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.
[0145]
In other words, the outline model construction program is configured to: i) global deformation that automatically deforms the global shape read from the database according to the value of the design table; and ii) local deformation that is changed by designating a local deformation site on the display. And has two deformation functions.
[0146]
Below, the rules used in these two variants are described.
[0147]
<Global transformation rules>
FIG. 21 is a diagram for explaining the global deformation rule of the outer shape model.
[0148]
The external model has a plurality of reference points C1 (bumper front end in the center of the vehicle width), C2 (cowl point), C3 (total height reference position in the center of the vehicle width (a position about 1/3 forward relative to the longitudinal direction of the roof). )), C4 (rear bumper rear end in the center of the vehicle width), C5 (right and left vehicle width reference position), C6 (front wheel housing on the vertical line passing through the front axle), C7 (rear wheel on the vertical line passing through the rear axle) These positions are determined according to the external parameters input to the design table. The points C1 to C4 are set at the center of the vehicle width.
[0149]
The reference points C1 and C4 are used to define the full length set as the full length definition point at the center in the vehicle width direction and at the most projecting portion position with respect to the front and rear bumper front and rear directions.
[0150]
The reference point C2 is used to define the cowl point (box) height set as the cowl point definition point in the center in the vehicle width direction and at the lower end of the windshield.
[0151]
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 definition point for the total height.
[0152]
Point C5 is used to define the full width set at the position of the most protruding portion in the vehicle width direction on the left and right side surfaces of the vehicle body as a full width definition point.
[0153]
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 housing on the left and right sides of the vehicle body as overhang definition points.
[0154]
These reference points C1 to C7 are input or changed by the wheel base 1101, the total width 1102, the total 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 is restricted as a non-deformable part that is not linked to the outer model, and is moved in the vertical direction in conjunction with the outer model according to the changed parameter.
[0155]
That is, the external specification value input to the design table is the center in the vehicle width direction and the coordinates of the definition point C3 set at a specific position on the roof panel, the center in the vehicle width direction, and the front bumper and rear At the coordinates of the definition points C1 and C4 set at the most protruding portion position with respect to the front-rear direction of the bumper, at the coordinates of the definition point C5 set at the most protruding portion position in the vehicle width direction on the side surface of the vehicle body, and at the center in the vehicle width direction And the coordinates of the definition point C2 (CW) set at the lower end of the front window glass 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 surface of the vehicle body. It can be said that it contains a value.
[0156]
In other words, only the coordinates of these definition points are determined directly according to the specification values entered in the design table, and the other coordinates included in the external model are rules prepared in advance for each of these definition points and vehicles. It is calculated | required by calculation based on. For example, the coordinates of C3 and C4 are defined by the total height 1103, the wheel base 1101 and the rear overhang 1106 input in the design table, and a line connecting them is automatically derived by calculation.
[0157]
As shown in FIG. 21 (a), when the overall height 1103, the overall width 1102, and the wheel base 1101 are changed as the reference model parameters (vehicle specification values), the external model maintains the shape of the roof panel. While moving up and down. Further, whether or not the inclination angle 1109 of the windshield and the length in the front-rear direction of the roof panel are deformed in accordance with the movement deformation of the roof panel differs depending on the vehicle type.
[0158]
In other words, when the sports type vehicle type is selected as the outer model, if the specification value of the total height 1103 is changed, the windshield tilt angle 1109 is maintained, and the length of the windshield and the roof panel in the front-rear direction is preferential. Automatically transformed into In addition, when the specification of the total height 1103 is changed when the vehicle type of the minivan is selected, the length of the windshield and the roof panel in the front-rear direction is changed while the windshield inclination angle 1109 is preferentially changed. Automatically deformed.
[0159]
Further, as shown in FIG. 21 (b), according to the total length (1101 + 1105 + 1106) as the vehicle specification value and the horizontal position 1107 of the cowl point CW, the entire front and rear of the outer shape base model corresponding to the vehicle type in the database The whole glass is moved in the front-rear direction while maintaining the shape of the whole, the windshield and the rear glass.
[0160]
Also, if the windshield top edge is deformed as the roof panel moves up and down, the front header defined in the reference model is set not to follow the input and change, and is defined in the same way in the reference model. It is possible to verify a predetermined visibility securing reference range and pressure suppression reference range with respect to the occupant's head (viewpoint EP), as well as the parts and outline models that are not directly related to these verification items. Parts that need to be deformed are set to automatically deform.
[0161]
FIG. 35 shows an example of a display screen that displays the outer shape model before changing the overall height with a front perspective view (a) and a rear perspective view (b), and FIG. 36 shows the outer shape model after changing the overall height according to the above deformation rule from the state of FIG. For example, when the overall height 1103 is increased (decreased), the entire roof of the outer model is shown together with the point C3 in FIG. 21 (a). It moves upward (downward) and does not move the position of the cowl point CW, but is automatically deformed so that the windshield inclination 1109 becomes smaller (larger). Further, when the total width 1102 is increased (decreased), the entire body side surface of the outer 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. It is automatically deformed so that the entire body becomes larger (smaller) in the width direction.
[0162]
FIG. 31 is an example of a display screen that displays the outer shape model before the wheel base change with a front perspective view (a) and a rear perspective view (b), and FIG. 32 shows the outer shape model after the wheel base change according to the above deformation rule from the state of FIG. Is displayed in a front perspective view (a) and a rear perspective view (b). For example, when the wheel base 1101, the front overhang 1105, or the rear overhang 1106 is made larger (smaller), FIG. In a) and (b), the front and rear of the outer shape model move forward (backward) together with the reference point C1 or C4, and the position of the cowl point CW does not move so that the entire body becomes larger (smaller) in the front-rear direction. Automatically deformed.
[0163]
As described above, since the outer shape model is automatically deformed and displayed only by inputting the planned vehicle specification value, the verification work can be performed easily and efficiently.
[0164]
In addition, because the deformation rules that are optimal for the vehicle type are set in advance, the shape of the model at the time of deformation can be displayed as a realistic one, which can improve the accuracy of verification work and reduce changes in the shape of the model manually. Work efficiency can be greatly improved.
[0165]
In the reference model, the front header, which is important for evaluation of pressure and visibility, is set so that it does not follow the input and change of specification values, while the part that does not directly relate to the verification item or the part that needs to follow the outer shape Is set to be automatically deformed, so that the verification work can be made more efficient.
[0166]
Further, by changing the deformation rule for each vehicle model of the outer model, the model shape after further automatic deformation can be made closer to reality, and subsequent manual correction can be reduced. In other words, since it is necessary to improve the aerodynamic characteristics of the sports type compared to the interior space, it is not realistic to change the inclination angle of the glass against the change in the specification value that increases the overall height, Since it is more realistic to give priority to the living space than aerodynamics, it can be said that the workability is better if it is changed in this way.
[0167]
In addition, when a model is modified in response to input or change of specification values, a model can be easily created automatically according to the planned vehicle image, while the above definition points are the minimum for determining the outline of the vehicle. Since it becomes a limited necessary specification value, a vehicle close to an image can be automatically deformed and displayed only by inputting these few specification values.
[0168]
In detail, because there is no detailed specification value when planning the vehicle, not only is the input itself difficult if there are many specification inputs, but if there are many input specifications, it is based on the regulatory concept of the input person. There is a high possibility of becoming a vehicle shape, and it becomes difficult to plan a free and unusual vehicle. The present invention makes it possible to plan a car of a free idea that is hard to be caught by the regulatory concept, while also suppressing manual correction after display as much as possible.
[0169]
More specifically, by defining a definition point for the cowl point, when the total height is changed, for example, the definition point for the cowl point is provided. Since it is possible to set whether the bonnet is also deformed in synchronization, the model is automatically deformed according to the image of the vehicle model, so that efficient planning and verification work can be performed.
[0170]
Also, by setting overhang definition points, you can select whether to change only the passenger compartment or the overhang when changing the overall length, and the model will be automatically deformed according to the image of the vehicle model. Therefore, efficient plan verification work is possible.
[0171]
<Local deformation rule>
≪Move point specified≫
FIG. 22 is a diagram for explaining the local deformation rule of the outer shape model, in addition to the reference points C1 to C7 (points where movement in the front-rear (horizontal) direction is restricted and movement in the up-down (vertical) direction is allowed). In addition, while maintaining the relative positional relationship between the first local deformation points D1 to D9 and the first local deformation points D1 to D9 that can be arbitrarily moved in the front-rear, left-right, and vertical directions with respect to the outer shape model. The second local moves in accordance with the amount of movement in conjunction with the arbitrary movement of the first local deformation points D1 to D9 (that is, moves and deforms while following the shape of the line segments LA1 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.
[0172]
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 portion 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 upper end of the front window glass at the center of the vehicle width, point D5 is set at the upper end 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 lower end of the glass is set, the point D7 is set at the boundary between the rear bumper upper end surface at the center of the vehicle width and the rear end surface composed of the rear panel and the tail lamp, and the point D8 is set at the lower end of the rear bumper at the center of the vehicle width. Point D9 is set at each corner that forms the outline of the left and right side window glasses. To have.
[0173]
The second local deformation points E1 and E2 are set on the left and right sides forming the contour LA1 of the front bumper lower end with the point D1 as the vehicle width center, and the points E3 and E4 are the front bumper upper end surface with the point D2 as the vehicle width center. It is set on the left and right sides forming the contour LA2 at the boundary between the front grille and the headlamp, and points E5 and E6 have the contour LA3 at the front end of the bonnet with the point D3 as the center of the vehicle width. The left and right side portions to be formed are set, the points E7 and E8 are set to the left and right corner portions forming the contour LA4 of the upper end of the front window glass with the point D4 as the vehicle width center, and the points E9 and E10 are set to the point D5. Set at the left and right corners that form the contour LA5 of the upper edge of the rear window glass as the width center. The points E11 and E12 are set at the left and right corners forming the contour LA6 of the lower end of the rear window glass with the point D6 as the vehicle width center, and the points E13 and E14 are the rear bumper upper end surface and the rear panel with the point D7 as the vehicle width center. Are set on the left and right sides forming the contour LA7 at the boundary between the rear end surface and the tail lamp, and the points E15 and E16 are the left and right contours forming the contour LA8 at the lower end of the rear bumper with the point D8 as the center of the vehicle width. Set to the side. The points E17 and E18 are set on a line that forms the contour LA9 at the lower ends of the left and right side window glasses extending rearward from the point D9.
[0174]
In addition, when either one of the pair of points E1 and E2 is moved, the other follows the point D1 as a reference and moves / deforms symmetrically like a mirror image. 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 E12 is based on point D6, points E13 and E14 are based on point D7, and points E15 and E16 are based on point D8, following one of the same rules and moving symmetrically like a mirror image To do.
[0175]
The pair of left and right points D9 and the points E17 and E18 on the line LA9 are also moved and deformed symmetrically like a mirror image following one of the same rules as described above.
[0176]
≪Move by specifying line≫
Further, in the above-described local deformation rule, the first local deformation lines LB1 to LB3 that can arbitrarily move in the front-rear, left-right, and up-down directions, and the first local deformation lines LB1 to LB3 among the first local deformation lines LB1 are relative to each other. A second local deformation line LC1 that moves in accordance with an amount of 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 moves in accordance with the amount of movement of the second local deformation line LC1 while maintaining the relative positional relationship and the line shape.
[0177]
Further, the second local deformation line LC2 that moves in accordance with the amount of movement of the first local deformation line LB2 while maintaining the relative positional relationship and the line shape with the first local deformation line LB2 in accordance with the movement amount. Similarly, the second local that follows and moves in accordance with the movement amount of the first local deformation line LB3 while maintaining the relative positional relationship and the line shape with the first local deformation line LB3. A deformation line LC3 is set.
[0178]
When the second local deformation line LC1 is designated and moved, the third local deformation line LA3 follows and moves, but the first local deformation line LB1 does not move.
[0179]
In this way, by designating and moving a plurality of preset local deformation lines to a specific part of the external model, the external model corresponds to the movement amount of the local deformation line while maintaining the line shape of the specific part. Transformed.
[0180]
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, and the points F1 to F4 defining the reference point C1 and the left and right sides of the upper end of the front bumper are set on the line LB1. Has been.
[0181]
The second local deformation line LC1 that moves following the first local deformation line LB1 forms the outline of the boundary portion between the front bumper upper end surface, the front grille, and the head end surface with the point D2 as the vehicle width center. On the line LC1, there are set a point D2 and points E3, E4, F1, and F2 that define the left and right sides of the boundary.
[0182]
The third local deformation line LA3 that moves following the second local deformation line LC1 forms the outline of the front end of the bonnet with the point D3 as the center of the vehicle width, and the point D3 and the front end of the bonnet are formed on the line LA3. Points E5 and E6 that define the left and right sides are set.
[0183]
The first local deformation line LB2 forms the contours of the left and right side roof rails. On the left line LB2, a point F5 defining the left corner of the lower end portion of the front window glass and the left side of the upper end portion of the front window glass are formed. A point E7 that defines the corner portion, points F7 and F9 that define the left side roof rail of the roof panel, and a point E9 that defines the left corner portion of the upper end portion of the rear window glass are set.
[0184]
Further, on the right line LB2 in the first local deformation line LB2, a point F6 defining the right corner of the lower end of the front window glass, a point E8 defining the right corner of the upper end of the front window glass, and the roof panel Points F8 and F10 that define the right side roof rail and a point E10 that defines the right corner of the upper end of the rear window glass.
[0185]
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 points D9 and points G1 to G4 are formed on the left and right lines LC2. Each is set.
[0186]
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, and the point F11 that defines the left and right side portions of the reference point C4 and the upper end of the rear bumper on the line LB3. ~ F14 is set.
[0187]
The second local deformation line LC3 that moves following the first local deformation line LB3 forms the outline of the boundary between the rear bumper upper end surface, the rear panel, and the rear end surface with the point D7 as the vehicle width center, On the line LC3, a point D7 and points E13, E14, F11, and F14 that define the left and right sides of the boundary are set.
[0188]
Note that when either one of the points F1 and F4 is moved, the other follows the point D1 as a reference and moves and deforms following a mirror image. 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 and deformed following a mirror image.
[0189]
In addition, 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 following the point C2, C3, D4, D5 as a mirror image. The Further, the local deformation line LC2 that moves following the local deformation line LB2 is also moved and deformed following one of them in a mirror image manner according to the same rule.
[0190]
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.
[0191]
Thus, by dragging and moving the first local deformation point and the local deformation line using a mouse pointer or the like, the second and third local deformation points and the local deformation line move following, so that after the automatic deformation The work efficiency can be improved when the model is partially deformed. In other words, it is not necessary to increase the accuracy of the appearance when expressing the appearance at the planning level of the vehicle, and it is only necessary to be able to roughly verify the overall image and layout. For this reason, in this embodiment, a site necessary for verifying only the above is selected, and planning and verification with necessary and sufficient accuracy can be performed by setting a function for easily deforming only this part. Not only has it become possible, it has greatly improved its work efficiency.
[0192]
In addition, the local deformation points and local deformation lines are set to parts that are meaningful for deforming the external appearance of the model when verifying the overall image of the planned vehicle, verifying the visibility, verifying the living space, etc. Has been.
[0193]
In addition, by setting the function of the first local deformation point and the second local deformation point linked to this, for example, when it is desired to deform the entire upper end of the glass, this can be achieved by simply moving the first local deformation point. Since it is only necessary to move the second local deformation point when it is desired to deform only the part, the working efficiency can be greatly improved.
[0194]
Furthermore, by incorporating these functions only in necessary parts, the program relating to the outer shape model can be simplified and high-speed execution can be realized.
[0195]
As described above, according to the above-described deformation rules, the plan verification conditions can be easily changed by performing global deformation and local deformation on the outer shape model. The points and deformation rules as described above are similarly defined for vehicle types other than the wagon.
[0196]
In order to enable deformation suitable for the vehicle type while ensuring the degree of freedom of deformation of the model, the deformation rule may be variable for each vehicle type of the outer model, and as illustrated in FIG. With respect to the open and the track, the rear glass lower end position G1 may be used as a reference point so that the rear deck portion can be moved and deformed in the vertical direction while maintaining the shape in the front-rear direction and the vehicle width direction.
[0197]
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 operations and programs are unnecessary, and workability can be improved and programs can be simplified.
[0198]
In addition, since the outer shape model is automatically deformed by changing the parameters, it is possible to easily and quickly verify the packaging feasibility and the visibility from the passenger compartment under different conditions.
[0199]
In addition, since the definition point is set at the same position as the outline model in the structural model described later, the work efficiency of the user can be improved, and it can be verified that the strength and the like substantially match the planned vehicle. In addition, it is not necessary to change the data such as the strength finely, so that the verification efficiency can be improved.
[0200]
[Structural model construction program]
The structural model construction program reads the pillar configuration and cross-sectional shape input to the design table, generates three-dimensional coordinate data of the frame structure of the vehicle, passes it to the image generation / display program, and displays it three-dimensionally on the display In this state, an input from the pointing device from the user is received, and a command for changing which part and how is determined, and the coordinate data is changed according to the command.
[0201]
Note that the shape of the frame that makes up the structural model is automatically deformed according to the deformation of the outer diameter model, so there is no deviation when the structural model and the outer shape model are overlapped. Interference problems can be verified with high accuracy.
[0202]
Moreover, the information regarding the cross-sectional area and the strength is set to be different based on the difference in the size of the vehicle model of the structural model.
[0203]
Therefore, the user's work efficiency can be improved. Furthermore, since it can be verified that the strength or the like substantially matches the planned vehicle, there is no need to finely change the data such as the strength, so that the verification efficiency can be improved and the verification accuracy can be improved.
[0204]
In addition, since the structural model has information on the cross-sectional area and strength related to the frame structure such as the body frame and the pillar, it is possible to quickly evaluate the feasibility of packaging and to provide information on the cross-sectional area of the pillar and the like. It becomes possible to quickly verify the feeling of pressure on the passenger in the passenger compartment space.
[0205]
Furthermore, by having strength information, verification of the strength of the planned vehicle, collision performance, vibration evaluation, etc. can be performed quickly, and the planning accuracy of the planned vehicle can be made extremely high from the initial planning stage.
[0206]
In addition, the structural model is equipped with information on steel plate material, steel plate thickness, and weight, so it is possible to verify the vehicle weight, weight distribution, center of gravity position, etc. of the planned vehicle. This can be clarified at an early stage of development.
[0207]
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, and a rear header, and at least one of a cross-sectional area and a strength (cross-sectional shape) for each frame portion. Because the setting can be changed, the required strength, cross-sectional area, etc. naturally differ if the vehicle type (category of vehicles such as wagons and sports) is different. And by making it possible to individually change the cross-sectional area and strength of the structural model, optimal packaging verification and strength verification can be performed according to the planned vehicle, and planning accuracy can be made extremely high.
[0208]
[Image generation display program]
<Reference point for model overlay display>
Each of the model construction programs 61 to 64 shown in FIG. 40 has a reference point specifying program for specifying a reference position for superimposing the models. By the function of the image generation / display program 65, the reference model, the outer model, In the structural model, reference points (reference parts) defined in specific parts of a vehicle are made to coincide with each other and displayed in a superimposed manner.
[0209]
Specifically, the reference portion of the vehicle is, for example, any one of the point C2 on the dash panel DP that partitions the engine room and the vehicle compartment in FIG. 22, the wheel center of the front wheel, or the bumper C1 at the front end at the vehicle width center. Or any combination thereof.
[0210]
In this way, by specifying the reference position for superimposing the models, it is possible to verify the models by superimposing them.
[0211]
Also, by defining a reference position for superimposition, each model is created based on the same standard, so that verification accuracy during superimposition can be improved.
[0212]
In addition, if the reference part is a point on the dash panel that partitions the engine room and the vehicle compartment of the vehicle, the interference relationship between the living space centered on the point on the dash panel and the outer shape can be displayed. The field of view of the hand can be verified with high accuracy.
[0213]
In addition, if the reference part is the center of the front wheel of the vehicle, the relationship between the living space centered on the front wheel and the outer shape can be displayed, and the driver's pedal located near the front wheel can be displayed. The position and driver's posture can be verified accurately.
[0214]
If the reference part is the front end of the bumper, the interference relationship between the living space centered on the front end of the bumper and the outer shape can be displayed, and the front portion of the vehicle can be verified with high accuracy.
[0215]
[Plan verification flow]
Next, a simulation method for planning and verifying a new model vehicle using the reference model, outer shape model, and structural model will be described.
[0216]
FIG. 25 is a diagram for explaining a planning process for a new model vehicle determined in the first stage of the simulation of the present embodiment, and FIGS. 26 and 27 are flowcharts showing a simulation method after the planning process is determined.
[0217]
First, planning requirements are determined in the planning process shown in FIG. The planning requirements include, for example, total length, total width, total height, wheel base, front row hip point, floor height, suspension type, engine layout, seat arrangement, drive system, vehicle type, destination, and other new technologies. .
[0218]
After that, the presence / absence of platform (chassis) diversion, derivation from existing models, new conditions, etc. are determined as preconditions.
[0219]
Next, this precondition is classified into level 1 to level 3 corresponding to the degree of diversion of the platform and level 4 of the new condition.
[0220]
In the above preconditions, Level 1 is a case where the platform is completely diverted. For example, the total length, width, height, wheelbase, front row hip point, floor height, suspension type, engine layout, etc. are shared with existing models. Content.
[0221]
Level 2 is for partial platform use. For example, the total height and engine arrangement are standardized, the total width, front row hip point and floor height are changed conditionally, and the wheelbase and suspension type are changed. It is.
[0222]
Level 3 is a case where the platform is partially diverted. For example, only the engine arrangement is standardized, and other length, width, height, wheelbase, front row hip point, floor height, suspension type, etc. are changed. is there.
[0223]
Level 4 is a content that changes all the above-mentioned total length, full width, full height, wheelbase, front row hip point, floor height, suspension type, engine layout, and the like.
[0224]
When the planning requirements and preconditions are determined as described above, the planning support program is activated to verify the planning of the new vehicle as shown in FIGS.
[0225]
First, in FIG. 26, in step S1, the planning support program (particularly the three-dimensional CAD software) shown in FIG. 40 is read from the external storage unit in FIG. 1 and activated. Thereby, the startup screen illustrated in FIG. 28 is displayed. After checking the completed model 31 on this screen, the OK button 35 is clicked to advance from step S3 to step S5, and the process of reviewing the completed model for which the plan verification has already been completed is entered. In step S5, a plurality of project files stored in the database as a completed model are displayed in a list on the screen as shown in FIG. If any project file is selected here and the OK button 36 is clicked, the process proceeds to step S7, and the specified completed model is read from the database. In step S28, the completed model is displayed as an image.
[0226]
In the screen of FIG. 28, when a model other than the completed model is selected, the model is newly built from the design table. Therefore, the process proceeds to FIG. 30 and the existing design table is read or a new design is performed. Prompts you to choose whether to create a table.
[0227]
When the new design table creation button 43 is selected, the process proceeds from step S9 to step S15, the design table creation program is started, and a numerical value is input to each parameter.
[0228]
When the existing design table read button 41 is selected in FIG. 30, the process proceeds from step S9 to step S11 and proceeds to the 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, you may select a design table that includes all parameters for the existing vehicle, you may select a design table that includes only the parameters for the chassis, or select a design table that was in the process of being created in the past. You may do it.
[0229]
When any design table is selected in step S11, the design table selected in step S13 is read.
[0230]
And step S14The user confirms whether it is necessary to input / change parameters in the design table, and if there is no input or change of parameters, the process proceeds directly to step S17.
[0231]
If there is a parameter change or the like, the process proceeds to step S15, the design table creation program is started, the selection table read in step S13 is opened, and a numerical value is input to each parameter.
[0232]
In steps S17 to S27, the model selected in FIG. 28 is constructed. In FIG. 28, the reference model, the outer shape model, and the structural model can be selected, respectively, or any of them can be selected in combination.
[0233]
When the reading of the completed model to be displayed or the construction of the reference model and / or the external model and / or the structural model is completed, an image display of those models is performed in step S28.
[0234]
FIG. 27 shows detailed processing in this image display state.
[0235]
First, in step S31, the image generation / display program reads the three-dimensional coordinate data of the display target model, and expands the image data in step S33. At this time, when several models are displayed in a superimposed manner, the interference state is verified by displaying the predetermined reference points so as to overlap each other. It is also possible to perform image processing so that a three-dimensional image in which each model is superimposed is displayed as a moving image. In this case, visibility from the vehicle interior, visibility securing reference range and pressure sensation are assumed in all vehicle driving scenes. It is possible to evaluate the suppression reference range. In addition, it is possible to display a part or an unmatch where the reference model interferes with the external model and the structural model in different colors, or display a warning sound or the like.
[0236]
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.
[0237]
If there is a model correction instruction, the process proceeds from step S35 to step S37 to transform the image data, and then the process proceeds to step S33 to display it again on the display.
[0238]
The deformation point is prepared for any of the reference model, the external model, and the structural model, and each model can be deformed on the three-dimensional image.
[0239]
When the correction is completed and a storage instruction is input, the process proceeds from step S39 to step S41, and the correction is reflected in the coordinate data corresponding to each model and stored. In the case of a save instruction in the complete model display state, it can also be saved in the database.
[0240]
<Verification>
Next, the verification work performed in step S33 in FIG. 27 will be described.
[0241]
FIG. 31 is an example of a display screen that displays the outer shape model before the wheel base change with a front perspective view (a) and a rear perspective view (b), and FIG. 32 shows the outer shape model after the wheel base change according to the above deformation rule from the state of FIG. Is displayed on the front perspective view (a) and the rear perspective view (b). In the display screen of FIG. 31, the third row occupants jump out to the rear of the vehicle, and the wheelbase or rear overhang is short. It can be easily verified visually. Therefore, it is easily found that a change to increase the wheel base and rear overhang parameters is necessary, and the state after the wheel base change can be confirmed in real time from FIG.
[0242]
FIG. 33 shows an example of a display screen that displays the outer shape model before the vehicle width change as a front perspective view (a) and a rear perspective view (b), and FIG. 34 shows the outer shape model after the vehicle width change according to the deformation rule from the state of FIG. 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 2 to 3 people per row Can not be seated, and it can be easily verified visually that the vehicle width is too narrow. Therefore, it is easily found that it is necessary to change the vehicle width parameter, and the state after the vehicle width change can be confirmed in real time from FIG.
[0243]
FIG. 35 shows an example of a display screen that displays the outer shape model before changing the overall height with a front perspective view (a) and a rear perspective view (b), and FIG. 36 shows the outer shape model after changing the overall height according to the above deformation rule from the state of FIG. 35 shows examples of display screens that are displayed in a perspective view (a) and a rear perspective view (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 is the head clearance line. It is in an overhanging state, and this state is alerted to the operator by displaying the occupant's head in a different color or by issuing a warning sound, etc., so the overall height is visually too low Can be easily verified. Therefore, it is easily found that a change to increase the overall height parameter is necessary, and the state after the overall height change can be confirmed in real time from FIG.
[0244]
FIG. 37 is an example of a display screen for displaying the living space model before the hip point change of the front row occupant in a side view, and FIG. 38 is a side view of the living space model after the hip point change according to the deformation rule from the state of FIG. In the display screen shown in FIG. 37, the occupant's feet in the second row protrude from the floor, and this state is displayed in a different color or a warning. Since the operator's attention is raised by making 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 found that the hip point parameter change is necessary, and the state after the hip point change can be confirmed in real time from FIG.
[0245]
FIG. 39 is a diagram showing a superimposed image of the windshield model 391 included in the reference model and the outer shape model. Using this figure, it is possible to verify whether or not the windshield part included in the outer model obstructs the occupant's field of view. In this example, if the structural model is contained 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.
[0246]
On the other hand, if the structural model is located behind the front header frame, it is determined that there is a problem with the feeling of pressure, and if the structural model is located below the front header frame, Can be judged to be hindered.
[0247]
According to the above-described embodiment, conventionally, the number of man-hours required to create the 3D CAD data is 10 people / day, and it takes about 5 people / day to create a plan. Although it takes about 20 people / day in man-hours, one plan can be completed at 0.3 people / day. In addition, although the number of model creation man-hours is greater than in the past, there is no need to create 3D CAD data from scratch for each plan as in the past, and once a model is created, subsequent creation is not necessary. Can be realized at an extremely high level.
[0248]
In addition, it is possible to speed up the work of determining the specification values of the new vehicle and the evaluation of the feasibility of packaging, and the visibility from the passenger compartment can be evaluated by configuring the three-dimensional image model as a moving image.
[0249]
In addition, since the image processing is performed by classifying the model into the reference model, the outer model, and the structural model, and superimposing these models, the occupant sitting posture of the new model can be reduced without complicating the program for realizing this simulation. The external shape (packaging, visibility and appearance), structure (rigidity), etc. can be verified independently and work can be made more efficient (because it is not bound by the influence of the external shape and structure when considering standards) You do n’t have to make compromises in the middle when you ca n’t see the whole thing.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration of a computer system to which an apparatus, a method, and a program for supporting planning 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 illustrating an image display example of a vehicle reference model.
FIG. 4 is a diagram illustrating an image display example of an occupant reference model.
FIG. 5 is a diagram illustrating an image display example of an outline model.
FIG. 6 is a diagram illustrating an image display example of a structural model.
FIG. 7 is a diagram illustrating an image display example of a completed model obtained by superimposing a reference model, an outer shape model, and a structural model.
FIG. 8 is a diagram illustrating an image display example of a completed model obtained by superimposing a reference model and a structural model.
FIG. 9 is a diagram illustrating an image display example of a completed model obtained by superimposing a reference model, an outer shape model, and a structural model.
FIG. 10 is a diagram illustrating an image display example of a completed model obtained by superimposing a reference model, an outer shape model, and a structural model.
FIG. 11 is a two-dimensional image displaying a vehicle reference model in the case of a three-row seat in a front view (b) and a side view (c), and an external dimension input screen that is input as a parameter to a corresponding portion of the two-dimensional image. It is a figure which illustrates (a).
FIG. 12 shows a two-dimensional image displaying a vehicle reference model in the case of a three-row seat in a front view (b), a side view (c), a plan view (d), and an enlarged view (e) around the dash panel. It is a figure which illustrates the input screen (a) of the in-vehicle dimension input as a parameter to the corresponding | compatible site | part of a three-dimensional image.
FIG. 13 shows a two-dimensional image that displays a vehicle reference model in the case of a three-row seat in a side view (b) and a field-related dimension input screen (a) that is input as a parameter to a corresponding part of the two-dimensional image. It is a figure illustrated.
FIG. 14 is 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 a side view (d), (e) around the wheel housing, and the two-dimensional image. It is a figure which illustrates the input screen (a) of the tire related dimension input as a parameter to a corresponding part of.
FIG. 15 is a two-dimensional image that displays 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 under floor that is 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 related dimension.
FIG. 16 is a diagram for explaining a method of determining the horizontal position TL, the vehicle width direction position BL, and the vertical position WL of the hip point HP1 of the front row occupant with respect to the 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 outer shape model defined by a vehicle type and the number of pillars.
FIG. 21 is a diagram for explaining a general deformation rule for an outline model;
FIG. 22 is a diagram for explaining a local deformation rule of an outline model.
FIG. 23 is a diagram for explaining a vehicle shape deformation rule of an outer shape model.
FIG. 24 exemplifies two-dimensional and three-dimensional images displaying an external view (b) and a cross-sectional shape (c) of a structural model, and a cross-sectional dimension input screen (a) input as a parameter to a corresponding portion of the image It is a figure to do.
FIG. 25 is a diagram for explaining a planning process for a new vehicle determined in the previous stage of the simulation according to the present embodiment.
FIG. 26 is a flowchart showing a simulation method after determining the planning process.
FIG. 27 is a flowchart showing a simulation method after determining the planning process.
FIG. 28 is a diagram showing an example of an operation screen at the start of simulation in FIGS. 26 and 27;
29 is a diagram showing an example of a display screen when a completed model button is selected on the operation screen of FIG. 28. FIG.
30 is a diagram showing an example of a display screen when a reference model button is selected on the operation screen of FIG.
FIG. 31 is a diagram showing an example of a display screen that displays the outer shape model before the wheel base is changed as a front perspective view (a) and a rear perspective view (b).
32 is a diagram showing an example of a display screen for displaying the outer shape model after the wheel base is changed in accordance with the deformation rule from the state of FIG. 31 in a front perspective view (a) and a rear perspective view (b).
FIG. 33 is a diagram showing an example of a display screen that displays an outer shape model before a vehicle width change as a front perspective view (a) and a rear perspective view (b).
FIG. 34 is a diagram showing an example of a display screen that displays the outer shape model after the vehicle width is changed according to the deformation rule from the state of FIG. 33 in a front perspective view (a) and a rear perspective view (b).
FIG. 35 is a diagram showing an example of a display screen that displays the outer shape model before the total height change by a front perspective view (a) and a rear perspective view (b).
FIG. 36 is a diagram showing an example of a display screen for displaying the outer shape model after changing the overall height according to the deformation rule from the state of FIG. 35, in a front perspective view (a) and a rear perspective view (b).
FIG. 37 is a diagram showing an example of a display screen that displays the outer shape model of the front row occupant before the hip point change in a side view.
38 is a diagram showing an example of a display screen for displaying the external shape model after changing the hip point according to the deformation rule from the state of FIG. 37 in a side view.
FIG. 39 is a diagram showing an interference state between the windshield model and the outer model.
FIG. 40 is a diagram showing a configuration of a planning support program according to the present embodiment.

Claims (41)

A planning support program that supports vehicle planning,
On the computer,
A specification value input step of accepting input of external specification values that define the outer dimensions of the vehicle by the user,
Reads out the external parameter group related to the external shape of the vehicle, and automatically changes the external parameters included in the read out external parameter group based on the specification values and predetermined rules to construct an external model representing the external appearance of the vehicle An outline model construction process to
An outline image display step for displaying an outline image corresponding to the outline model constructed in the outline model construction step on a display;
An image deformation step of deforming the outer shape image by selecting and moving a point or a line on the outer shape image displayed on the display in the outer shape image display step based on a user operation;
An outer shape model deformation step of deforming the outer shape model in accordance with the deformation of the outer shape image in the image deformation step;
A living space model construction step of reading out a human model and a seat model based on an occupant parameter relating to the seating state of the occupant in the vehicle input by a user , and constructing a living space model representing the occupant's habitability based on the model When,
A structural model construction step of reading out a structural parameter group related to the structure of the vehicle framework, and constructing a structural model based on the structural parameters included in the read out structural parameter group;
A superimposing display step of superimposing and displaying the outer shape model, the structural model, and the living space model;
Was executed,
A planning support program , wherein the structural model is automatically deformed in response to the deformation of the external model in the external model deformation step, while the living space model is not automatically deformed .   The planning support program according to claim 1, wherein the outline image display step displays a point that can be selected and moved by the user in the image deformation step so as to be identified as a deformation point. The outer shape image display step displays the first deformation point and the second deformation point as the deformation points so as to be distinguishable from each other,
3. The planning support program according to claim 2, wherein the image deformation step automatically moves the second deformation point following the selection and movement of the first deformation point.   The planning support program according to claim 3, wherein the second deformation point follows the first deformation point while maintaining a relative positional relationship with the first deformation point.   The outline image display step displays a line connecting the first deformation point and the second deformation point as a deformation line, and the deformation line retains its shape by moving the first deformation point. The planning support program according to claim 4, wherein the program moves while moving.   The planning support program according to claim 2, wherein the deformation points include four corner points of a front window glass and a rear window glass.   The planning support program according to claim 2, wherein the deformation point includes an inflection point of the side window glass.   The planning support program according to claim 2, wherein the deformation point includes an inflection point of a bumper.   The planning support program according to claim 2, wherein the deformation points include points at both ends of a front end portion of a bonnet. The outline image display step includes
In the outline image, a point in the vehicle width center of the upper edge of the front window glass and the rear window glass is displayed as the first deformation point, and points at both ends of the upper edge of the front window glass and the rear window glass are displayed as the first deformation point. 2 Display as deformation points,
The image transformation step includes
The points on both ends of the upper edge of the front window glass are linked to the vehicle width center point of the upper edge of the front window glass, and the points on both ends of the upper edge of the rear window glass are connected to the upper edge of the rear window glass. The planning support program according to claim 3, wherein the planning support program is linked to a center point of the vehicle width.   The first deformation point includes a point in the center of the vehicle width of the front edge of the bonnet, and the second deformation point linked to the first deformation point includes points on both ends of the front edge of the bonnet. The planning support program according to claim 3. In the image display step, a line that can be selectively moved by the user in the image deformation step is displayed as a deformation line,
2. The plan according to claim 1, wherein when the deformation line is selected and moved in the image deformation step, the outer shape model is deformed in accordance with the movement of the deformation line in the outer shape model deformation step. Support program. The outline image display step displays the first deformation line and the second deformation line as the deformation lines so that they can be distinguished from each other,
The planning support program according to claim 12, wherein the image deformation step automatically moves the second deformation line following the selection and movement of the first deformation line.   The planning support program according to claim 13, wherein the second deformation line moves following the first deformation line while maintaining a relative positional relationship and a line shape with respect to the first deformation line. The outline image display step includes
In the outline image, the upper end line of the front end surface of the front bumper in the displayed vehicle is displayed as the first deformation line, and the intersection line between the upper end surface of the front bumper and the front end surface on which the front grille and the headlamp are arranged is As a second deformation line,
The image transformation step includes
The planning support program according to claim 14, wherein the intersection line is moved following the movement of the upper end line of the front end surface of the front bumper. The outline image display step displays the first deformation line, the second deformation line, and the third deformation line as the deformation lines so that they can be distinguished from each other,
The image transformation step includes
The second deformation line is automatically moved following the selection and movement of the first deformation line, and the third deformation line is automatically moved following the selection and movement of the second deformation line. The planning support program according to claim 12, wherein:   17. The planning support program according to claim 16, wherein when the second deformation line is selected and moved, the first deformation line does not move, and the third deformation line follows and moves. The outline image display step includes
In the outline image, the upper end line of the front end surface of the front bumper in the displayed vehicle is displayed as the first deformation line, and the intersection line between the upper end surface of the front bumper and the front end surface where the front grille and the headlamp are arranged is Displaying as a second deformation line, an intersection line between the front end face where the front grille and the headlamp are arranged and a plane forming a bonnet is displayed as the third deformation line,
The image transformation step includes
Following the selection and movement of the upper end line as the first deformation line, the specified intersection line with the second deformation line is automatically moved to follow the selection and movement of the intersection line as the second deformation line. The planning support program according to claim 16, wherein the intersection line as the third deformation line is automatically moved.   2. The planning support program according to claim 1, wherein in the image transformation step, the outer shape image is deformed so as to be plane-symmetric with respect to a plane passing through a vehicle width center of the vehicle displayed as the outer shape image. .   A computer-readable storage medium storing the planning support program according to any one of claims 1 to 19. A planning support method for supporting vehicle planning,
On the computer,
A specification value input step of accepting input of external specification values that define the outer dimensions of the vehicle by the user,
Reads out the external parameter group related to the external shape of the vehicle, and automatically changes the external parameters included in the read out external parameter group based on the specification values and predetermined rules to construct an external model representing the external appearance of the vehicle An outline model construction process to
An outline image display step for displaying an outline image corresponding to the outline model constructed in the outline model construction step on a display;
An image deformation step of deforming the outer shape image by selecting and moving a point or a line on the outer shape image displayed on the display in the outer shape image display step based on a user operation;
An outer shape model deformation step of deforming the outer shape model in accordance with the deformation of the outer shape image in the image deformation step;
A living space model construction step of reading out a human model and a seat model based on an occupant parameter relating to the seating state of the occupant in the vehicle input by a user , and constructing a living space model representing the occupant's habitability based on the model When,
A structural model construction step of reading out a structural parameter group related to the structure of the vehicle framework, and constructing a structural model based on the structural parameters included in the read out structural parameter group;
A superimposing display step of superimposing and displaying the outer shape model, the structural model, and the living space model;
Was executed,
The planning support method , wherein the structural model is automatically deformed according to the deformation of the external model in the external model deformation step, while the living space model is not automatically deformed .   The planning support method according to claim 21, wherein the outline image display step displays a point that can be selected and moved by the user in the image transformation step so as to be identifiable as a transformation point. The outer shape image display step displays the first deformation point and the second deformation point as the deformation points so as to be distinguishable from each other,
The image transformation step includes
The planning support method according to claim 22, wherein the second deformation point is automatically moved following the selection and movement of the first deformation point.   The planning support method according to claim 23, wherein the second deformation point follows the first deformation point while maintaining a relative positional relationship with the first deformation point.   The outline image display step displays a line connecting the first deformation point and the second deformation point as a deformation line, and the deformation line retains its shape by moving the first deformation point. The planning support method according to claim 24, wherein the planning support method moves while moving.   The planning support method according to claim 22, wherein the deformation points include four corner points of a front window glass and a rear window glass.   The planning support method according to claim 22, wherein the deformation point includes an inflection point of a side window glass.   The planning support method according to claim 22, wherein the deformation point includes an inflection point of a bumper.   The planning support method according to claim 22, wherein the deformation points include points at both ends of a front end portion of a bonnet. The outline image display step includes
In the outline image, a point in the vehicle width center of the upper edge of the front window glass and the rear window glass is displayed as the first deformation point, and points at both ends of the upper edge of the front window glass and the rear window glass are displayed as the first deformation point. 2 Display as deformation points,
The image transformation step includes
The points at both ends of the upper edge of the front window glass are linked to the vehicle width center point of the upper edge of the front window glass, and the points at both ends of the upper edge of the rear window glass are connected to the upper edge of the rear window glass. The planning support method according to claim 23, wherein the planning support method is interlocked with a center point of the vehicle width.   The first deformation point includes a point in the center of the vehicle width of the front edge of the bonnet, and the second deformation point linked to the first deformation point includes points on both ends of the front edge of the bonnet. The planning support method according to claim 23. In the image display step, a line that can be selectively moved by the user in the image deformation step is displayed as a deformation line,
The plan according to claim 21, wherein when the deformation line is selected and moved in the image deformation step, the outer shape model is deformed in accordance with movement of the deformation line in the outer shape model deformation step. Support method. The outline image display step displays the first deformation line and the second deformation line as the deformation lines so that they can be distinguished from each other,
The image transformation step includes
The planning support method according to claim 32, wherein the second deformation line is automatically moved following the selection and movement of the first deformation line.   The planning support method according to claim 33, wherein the second deformation line moves following the first deformation line while maintaining a relative positional relationship and a line shape with respect to the first deformation line. The outline image display step includes
In the outline image, the upper end line of the front end surface of the front bumper in the displayed vehicle is displayed as the first deformation line, and the intersection line between the upper end surface of the front bumper and the front end surface on which the front grille and the headlamp are arranged is As a second deformation line,
The image transformation step includes
The planning support method according to claim 34, wherein the intersection line is moved following the movement of the upper end line of the front end surface of the front bumper. The outline image display step displays the first deformation line, the second deformation line, and the third deformation line as the deformation lines so that they can be distinguished from each other,
The image transformation step includes
The second deformation line is automatically moved following the selection and movement of the first deformation line, and the third deformation line is automatically moved following the selection and movement of the second deformation line. The planning support method according to claim 32, wherein:   The planning support method according to claim 36, wherein, when the second deformation line is selected and moved, the first deformation line does not move, and the third deformation line moves following. The outline image display step includes
In the outline image, the upper end line of the front end surface of the front bumper in the displayed vehicle is displayed as the first deformation line, and the intersection line between the upper end surface of the front bumper and the front end surface where the front grille and the headlamp are arranged is Displaying as a second deformation line, an intersection line between the front end face where the front grille and the headlamp are arranged and a plane forming a bonnet is displayed as the third deformation line,
The image transformation step includes
Following the selection and movement of the upper end line as the first deformation line, the specified intersection line with the second deformation line is automatically moved to follow the selection and movement of the intersection line as the second deformation line. The planning support method according to claim 36, wherein the intersection line as the third deformation line is automatically moved.   The planning support method according to claim 21, wherein, in the image deformation step, the outer shape image is deformed so as to be plane-symmetric with respect to a plane passing through a vehicle width center of the vehicle displayed as the outer shape image. . A planning support device that supports vehicle planning,
A specification value input means for accepting an input of a contour specification values that define the outer dimensions of the vehicle by the user,
Reads out the external parameter group related to the external shape of the vehicle, and automatically changes the external parameters included in the read out external parameter group based on the specification values and predetermined rules to construct an external model representing the external appearance of the vehicle Means for constructing an external model,
An outline image display means for displaying an outline image corresponding to the outline model constructed by the outline model construction means on a display;
Image deforming means for deforming the contour image by selecting and moving a point or a line on the contour image displayed on the display by the contour image display means based on a user operation;
An outer shape model deforming means for deforming the outer shape model according to the deformation of the outer shape image by the image deforming means;
A living space model constructing means for reading out a human model and a seat model based on an occupant parameter related to a seated state of the occupant in a vehicle input by a user , and constructing a residential space model representing the occupant's habitability based on the model When,
A structural model construction means for reading out a structural parameter group related to the structure of a vehicle framework and constructing a structural model based on the structural parameters included in the read structural parameter group;
Superimposing display means for superimposing and displaying the outer shape model, the structural model, and the living space model;
Only including,
The planning support apparatus , wherein the structural model is automatically deformed in response to the deformation of the external model by the external model deforming means, while the living space model is not automatically deformed . A planning support system that supports vehicle planning,
A specification value input means for accepting an input of a contour specification values that define the outer dimensions of the vehicle by the user,
The occupant parameter input means for accepting input of the occupant parameters relates to an occupant of the seating status in the vehicle by the user,
A database storing a plurality of external parameter groups related to the external shape of the vehicle;
Selecting means for selecting one of the external parameter groups from the database;
An external model construction means for constructing an external model representing the external appearance of the vehicle by changing the external parameters included in the selected external parameter group;
Reads out the external parameter group related to the external shape of the vehicle, and automatically changes the external parameters included in the read out external parameter group based on the specification values and predetermined rules to construct an external model representing the external appearance of the vehicle Means for constructing an external model,
An outline image display means for displaying an outline image corresponding to the outline model constructed by the outline model construction means on a display;
Image deforming means for deforming the contour image by selecting and moving a point or a line on the contour image displayed on the display by the contour image display means based on a user operation;
An outer shape model deforming means for deforming the outer shape model according to the deformation of the outer shape image by the image deforming means;
Based on the occupant parameters input by the user, a human model and a seat model are read out, and a living space model construction means for constructing a living space model representing the occupant's habitability based on the model;
A structural model construction means for reading out a structural parameter group related to the structure of a vehicle framework and constructing a structural model based on the structural parameters included in the read structural parameter group;
Superimposing display means for superimposing and displaying the outer shape model, the structural model, and the living space model;
It includes,
The planning support system , wherein the structural model is automatically deformed in response to the deformation of the external model by the external model deforming means, while the living space model is not automatically deformed .

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