JP4136673B2 - Device safety verification device, device safety verification method, and storage medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a three-dimensional shape processing system such as a three-dimensional CAD / CAM / CAE / CG system realized by using a dedicated three-dimensional shape processing device or a general-purpose information processing device. The present invention relates to a device safety verification technique for virtually verifying the safety of a device when a foreign object enters from a device or when a component inside the device is dropped.
[0002]
[Prior art]
With the spread of 3D shape processing systems such as 3D CAD / CG systems, the user base of 3D shape data has expanded, and the actual product equipment 3 has been developed in various processes from upstream to downstream, centering on the design production process. Opportunities for effective use of dimensional shape data are increasing.
By the way, as one of the advantages of introducing the three-dimensional shape processing system as described above, an operator who performs equipment-related work is represented by three-dimensional shape data together with a device model that represents the device using three-dimensional shape data. By displaying the expressed worker model and, in some cases, obtaining a visual field image viewed from the viewpoint of the worker, it is possible to virtually verify the effects of various operations related to the device.
For example, in the prior art disclosed in Japanese Patent Application Laid-Open No. 10-240791, operability evaluation of devices is supported using various worker models having different postures and body shapes. Specifically, when the reference position of the worker model placed in the simulation space is defined according to the basic posture of the worker model and changed to a worker model with a different body shape, the basic posture before and after the change The changed worker model is placed in the simulation space so that they match.
In the prior art disclosed in Japanese Patent Laid-Open No. 2000-250955, the effective visual field range of the display device is verified using an operator model. Specifically, the usage environment of the display device to be verified is constructed and displayed in the virtual three-dimensional space realized on the screen, the effective visual field range of the display device to be verified is set in the usage environment, and the effective visual field is set. The range is visualized on the screen where the usage environment is displayed.
On the other hand, in order to verify the safety of a device when a foreign object has entered from the opening of the device or a component inside the device has fallen, is there a live part of the device in the fall range of those objects? It is necessary to confirm whether or not, but conventionally, such a safety test has been carried out using a prototype device.
[Patent Document 1]
Japanese Patent Laid-Open No. 10-240791 [Patent Document 2]
Japanese Patent Laid-Open No. 2000-250955
[Problems to be solved by the invention]
However, since the above-described conventional device safety test requires a prototype, it is expensive to implement. In addition, since it is possible to prototype a device relatively downstream of the design and production process, it has been difficult to find problems related to the safety of the device at an early stage.
An object of the present invention is to solve such a problem of the prior art. Specifically, an operator model is utilized in a virtual three-dimensional space by utilizing an equipment model and an operator model upstream of the design and production process. It is to provide a technology for virtually verifying the safety of a device by using a field-of-view image viewed from the above viewpoint.
[0004]
[Means for Solving the Problems]
The inventions of 請 Motomeko 1 wherein, when invaded foreign matter from the opening of the device, the virtual verify the safety of the equipment to support whether the confirmation Katsuden portion exists in the fall range of foreign material In the device safety verification apparatus, the device model placement means for placing the device model representing the device to be verified in the virtual three-dimensional space, and the viewing angle designation for allowing the user to designate the viewing angle of the worker model representing the worker Means, a worker model placement means for placing the worker model in the virtual three-dimensional space, and a line-of-sight direction of the worker model downward in the vertical direction, from the viewpoint of the worker model using the viewing angle. A field-of-view image display unit that obtains a range of the field-of-view image when viewed, and displays a field-of-view image of the range; and an aperture position designation unit that allows a user to designate an aperture position of the device model; Display means The live part is displayed in a state different from other parts, and the worker model placement means places the worker model based on the opening position designated by the opening position designation means. And
請 Motomeko 2 inventions description, when the device internal parts dropped, component devices to virtual verify the safety of equipment to support whether the confirmation Katsuden portion exists in the fall range of In the safety verification apparatus, device model placement means for placing a device model representing a device to be verified in a virtual three-dimensional space, and viewing angle designation means for allowing the user to designate the viewing angle of the worker model representing the worker The worker model placement means for placing the worker model in the virtual three-dimensional space, and the viewing direction of the worker model as viewed from the viewpoint of the worker model using the viewing angle A field-of-view image display means for obtaining a range of the field-of-view image and displaying the field-of-view image of the range; and a viewpoint position specifying means for allowing a user to specify the position of the viewpoint of the worker model, the field-of-view image display means Before The live parts displayed in a different state and other parts, the worker model arrangement unit is characterized by placing the operator model based on the specified viewpoint position by the viewpoint position specifying means.
請 Motomeko 3 inventions described, in the equipment safety verification apparatus according to claim 1, wherein, after placing the operator model, the line-of-sight direction of the axis, and two axes orthogonal to the perpendicular to each other to the axis With respect to the three axes, there is provided worker fine adjustment means for finely adjusting the position and posture of the worker model by parallel movement in each axial direction and rotational movement around each axis .
The inventions of 請 Motomeko 4 wherein, when invaded foreign matter from the opening of the device, the virtual verify the safety of the equipment to support whether the confirmation Katsuden portion exists in the fall range of foreign material In the safety verification method, a step of arranging a device model representing a device to be verified in a virtual three-dimensional space, a step of allowing a user to specify a viewing angle of a worker model representing a worker, Letting the user specify the position of the opening, placing the worker model in the virtual three-dimensional space based on the specified position of the opening, and vertically aligning the gaze direction of the worker model A step of obtaining a range of a field image when viewed from the viewpoint of the worker model using the viewing angle, and displaying the field image of the range in a state where the live part is different from other parts It is characterized by comprising .
請 Motomeko 5 inventions description, when the device internal parts dropped, component devices to virtual verify the safety of equipment to support whether the confirmation Katsuden portion exists in the fall range of In the safety verification method, a step of arranging a device model representing a device to be verified in a virtual three-dimensional space, a step of allowing a user to specify a viewing angle of a worker model representing a worker, A step of causing a user to specify a viewpoint position; a step of placing the worker model in the virtual three-dimensional space based on a specified viewpoint position; and a gaze direction of the worker model downward in the vertical direction And obtaining a range of the field image when viewed from the viewpoint of the worker model using the field angle, and displaying the field image of the range in a state where the live part is different from other parts. It is characterized by having .
According to a sixth aspect of the present invention, in the device safety verification method according to the fourth or fifth aspect, after the worker model is arranged, the visual axis direction axis and two axes perpendicular to the axis are orthogonal to each other. A step of finely adjusting the position and posture of the operator model by parallel movement in each axial direction and rotational movement around each axis with respect to the axis is provided.
The invention described in claim 7 is a computer-readable storage medium storing a program for causing a computer to execute each step of the device safety verification method according to any one of claims 4 to 6.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a hardware configuration diagram of an apparatus safety verification apparatus in which the present invention is implemented. As shown in the figure, the device safety verification device includes a CPU 1 that operates according to a program, a memory (for example, RAM) 2 that temporarily stores the program and various data, and an external storage device that stores the program and various data. (For example, a hard disk device) 3, a reading device for reading data from a removable storage medium, an input device 4 having a keyboard, a mouse and the like for inputting various data and instructions including three-dimensional shape data, a device model and a worker model Is provided.
[0007]
FIG. 2 is a system configuration diagram of a device safety verification system that is realized by the hardware and the program (software) as described above and shows an embodiment of the present invention. As shown in the figure, the device safety verification system of this embodiment includes an input unit 11 for inputting various data and instructions including three-dimensional shape data constituting a device model and an operator model by an input device 4 and the like. A device placement unit 12 that is a device model placement unit that places a device model representing a device to be verified in a three-dimensional space, and a viewing angle designation unit that is a viewing angle designation unit that designates the viewing angle of the worker model representing a worker. 13. Opening position specifying unit 14 that is an opening position specifying unit that specifies the position of the opening of the device model, viewpoint position specifying unit 15 that is a viewpoint position specifying unit that specifies the viewpoint position of the worker model, and the virtual 3 Worker placement unit 16 which is a worker model placement means for placing the worker model in a three-dimensional space, the line-of-sight direction of the worker model is vertically downward, and the viewing angle A field-of-view image display unit 17 which is a field-of-view image display means for obtaining a field-of-view image range when viewed from the viewpoint of the worker model and displaying a field-of-view image within that range, and the position and orientation of the worker model are finely defined. An operator fine adjustment unit 18 which is an operator fine adjustment means for adjustment is provided.
[0008]
FIG. 3 shows an operation flow of this embodiment. The operation flow of this embodiment will be described below with reference to FIG.
First, the device placement unit 12 places a device model to be verified in a virtual three-dimensional space realized on the screen (S1). The device model is displayed using the three-dimensional shape data, for example, at the center of the screen or at the designated position on the right or left of the screen in consideration of the position of the worker model. The three-dimensional shape data of the device model may be input by the input device 4 at this time, or the three-dimensional shape data already stored in the external storage device 3 may be read and used.
Subsequently, the viewing angle designating unit 13 designates the viewing angle of the worker model (S2). For example, the user inputs an angle using a keyboard or the like constituting the input device 4. When the operator model is arranged by designating the position of the opening of the device model (YES in S3), the opening position designation unit 14 causes the position of the opening to be designated (S4). For example, two points on the boundary of the opening in the displayed device model (for example, two points that indicate the both ends of the diameter by making the opening circular) are designated and designated by a mouse or the like.
On the other hand, when the position of the opening is not designated (NO in S3), the user designates whether to place the worker model by designating the viewpoint position of the worker model (S5), and the viewpoint When designating the position (YES in S5), the viewpoint position designating unit 15 causes the viewpoint position to be designated with a mouse or the like (S6). On the other hand, when the viewpoint position is not designated (NO in S5), this operation flow is terminated.
[0009]
Next, the worker placement unit 16 places a worker model in the virtual three-dimensional space (S7).
When the position of the opening of the device model is designated by two points on the boundary of the opening, for example, the worker model may be arranged as follows.
(1) The midpoint M of the two designated points P1 and P2 is obtained.
(2) When the direction of the line segment P1P2 is not horizontal, a horizontal plane H is obtained through the midpoint M, and a point obtained by projecting P1 onto the plane H is newly set as P1.
(3) A circle on the plane H with the midpoint M as the center and the length of the line segment M P1 as the radius is defined as C.
(4) Determine the posture of the worker model so that the line-of-sight direction of the worker model passes through the middle point M and is downward in the vertical direction (For the degree of freedom of rotation around the axis in the line-of-sight direction, for example, the worker model For example, the right direction may be determined so as to coincide with the X-axis direction of the world coordinate system).
(5) Determine the viewpoint position so that the apex angle of the cone from which the circle C is viewed from the viewpoint of the worker model is ½ of the designated viewing angle, and the worker so that the viewpoint position becomes such a position. Determine the position of the model.
On the other hand, when the viewpoint position of the worker model is designated, for example, the worker model may be arranged as follows.
(1) The position of the worker model is determined so that the designated point P becomes the viewpoint of the worker model.
(2) Determine the posture of the worker model so that the line-of-sight direction of the worker model is downward in the vertical direction. (For the degree of freedom of rotation around the axis in the line-of-sight direction, for example, the right direction for the worker model is the world coordinates. It may be determined so as to coincide with the X-axis direction of the system).
[0010]
FIG. 4 shows an example in which the device model 21 and the worker model 22 are arranged.
Next, from the viewpoint of the arranged worker model, the visual field image display unit 17 obtains the range of the visual field image when looking downward in the vertical direction based on the designated visual field angle, and the visual field image that falls within that range Is displayed (S8). The device model image below the viewpoint is obtained from the three-dimensional shape data. FIG. 5 shows an example of a visual field image. In FIG. 5, the boundary of the visual field is displayed as a circle. The visibility of the live part may be improved by displaying only the live part of the device model in the field-of-view image in a different display mode (for example, coloring). Since the designer knows which part is the active part, it is instructed and set in advance.
Subsequently, the fall range of the object at the viewpoint position of the worker model is regarded as the same as the range of the visual field image, and the safety of the device is verified by the user viewing the visual field image (S9). If the live part of the device model exists in the field-of-view image, it is dangerous, and if it does not exist, it is safe.
Thereafter, when finely adjusting the arrangement of the worker model (YES in S10), the worker fine adjustment unit 18 determines from the axis in the line-of-sight direction of the worker model and the two axes perpendicular to the axis. The position and orientation of the worker model are finely adjusted with respect to the three axes by means of parallel movement in each axial direction and rotational movement around each axis (S11), and the process returns to step S8.
FIG. 6 shows an example of three axes for finely adjusting the placement of the worker model together with the head of the worker model. In FIG. 6, the axis in the line-of-sight direction is displayed as the Z axis, the left direction for the operator is the X axis, and the upward direction for the operator is displayed as the Y axis.
On the other hand, when the arrangement of the worker model is not finely adjusted (NO in S10), this operation flow is ended.
As described above, the embodiment of the present invention has been described in the case of the system configuration shown in FIG. 2, but the program programmed according to the device safety verification method as described above is stored in a removable storage medium, and the storage medium is stored in the storage medium. By attaching to an information processing device such as a personal computer that has not been able to perform device safety verification according to the present invention, or by transferring such a program to such an information processing device via a network, Even in such an information processing apparatus, apparatus safety verification according to the present invention can be performed.
[0011]
【The invention's effect】
As described above, according to the present invention, in the invention of claim 1 and 4, wherein, when invaded foreign matter from the opening of the device, whether Katsuden portion falling range of the foreign matter is present by supporting the confirmation, it is and Turkey to the virtual verify the safety of the equipment.
Further, the invention of claim 2 and 5, wherein, when the device internal parts dropped, by supporting whether the confirmation Katsuden portion exists in the fall range of component safety equipment virtual verification it can Rukoto.
Further, in the invention of claim 3 and 6, it is possible to virtual verify safety by shifting the range of the view image in some circumstances.
Further, in the invention of claim 7, wherein, the computer such as a storage medium according to the invention thus far claims 4 to instrument it was based on the invention according to any one of 6 security verification rows Enaka' was personal computer By mounting on the computer , even in such a computer , the effect of the invention according to any one of claims 4 to 6 can be obtained.
[Brief description of the drawings]
FIG. 1 is a hardware configuration diagram of an apparatus safety verification apparatus in which the present invention is implemented.
FIG. 2 is a system configuration diagram of an apparatus safety verification system showing an embodiment of the present invention.
FIG. 3 is an operation flow diagram of the device safety verification system showing an embodiment of the present invention.
4 is a diagram illustrating an example in which a device model 21 and a worker model 22 are arranged. FIG.
FIG. 5 is a diagram illustrating an example of a visual field image.
FIG. 6 is an explanatory diagram of a device safety verification system showing an embodiment of the present invention.
[Explanation of symbols]
1 CPU
3 External storage device 4 Input device 5 Display device 12 Device placement unit 13 Viewing angle designation unit 14 Opening position designation unit 15 Viewpoint position designation unit 16 Worker placement unit 17 View image display unit 18 Worker fine adjustment unit

Claims (7)

In the device safety verification device that virtually verifies the safety of the device by supporting whether or not there is a live part in the falling range of the foreign material when a foreign material enters from the opening of the device,
A device model placement means for placing a device model representing a device to be verified in a virtual three-dimensional space; a viewing angle designation means for causing a user to designate a viewing angle of a worker model representing a worker; and the virtual three-dimensional space A worker model placement means for placing the worker model therein, and a range of a field image when the line of sight of the worker model is vertically downward and viewed from the viewpoint of the worker model using the field angle A field-of-view image display means for displaying a field-of-view image of the range, and an opening position designation means for causing the user to designate the opening position of the device model ,
The field-of-view image display means displays the live part in a state different from other parts, and the worker model placement means is based on the opening position designated by the opening position designation means. Equipment safety verification device characterized by arranging In the device safety verification device that virtually verifies the safety of the device by supporting whether or not there is a live part in the falling range of the component when the component inside the device is dropped,
A device model placement means for placing a device model representing a device to be verified in a virtual three-dimensional space; a viewing angle designation means for causing a user to designate a viewing angle of a worker model representing a worker; and the virtual three-dimensional space A worker model placement means for placing the worker model therein, and a range of a field image when the line of sight of the worker model is vertically downward and viewed from the viewpoint of the worker model using the field angle Visual field image display means for displaying the visual field image of the range, and viewpoint position designation means for allowing the user to designate the position of the viewpoint of the worker model,
The visual field image display means displays the live part in a state different from other parts, and the worker model placement means places the worker model based on the viewpoint position designated by the viewpoint position designation means. A device safety verification device characterized by: In the equipment safety verification device according to claim 1 or 2 ,
After the worker model is arranged, with respect to the axis in the line-of-sight direction and the three axes perpendicular to each other and perpendicular to each other, translation in each axial direction and rotational movement around each axis An apparatus safety verification apparatus comprising a worker fine adjustment means for finely adjusting the position and posture of a worker model . In the safety verification method that virtually verifies the safety of the device by assisting in confirming whether there is a live part in the falling range of the foreign material when a foreign material enters from the opening of the device,
A step of arranging a device model representing a device to be verified in a virtual three-dimensional space; a step of allowing a user to specify a viewing angle of a worker model representing a worker; and a position of an opening of the device model A step of arranging the worker model in the virtual three-dimensional space based on the position of the designated opening, and the viewing direction of the worker model is set to be vertically downward, and the viewing angle A field of view image range when viewed from the viewpoint of the worker model using the display, and displaying the field image of the range in a state different from the live parts in other parts Equipment safety verification method . In the device safety verification method that virtually verifies the safety of the device by supporting whether the live part exists in the falling range of the component when the component inside the device is dropped,
A step of arranging a device model representing a device to be verified in a virtual three-dimensional space; a step of causing a user to specify a viewing angle of a worker model representing a worker; and a position of a viewpoint of the worker model A step of arranging the worker model in the virtual three-dimensional space based on the position of the designated viewpoint, and the line-of-sight direction of the worker model is vertically downward, and the viewing angle is And a step of obtaining a range of a field image when viewed from the viewpoint of the worker model, and displaying the field image of the range in a state different from other parts of the live part. Equipment safety verification method . In the apparatus safety verification method according to claim 4 or 5,
After the worker model is arranged, the translational movement in each axial direction and the rotational movement around each axis with respect to the axis in the line-of-sight direction and the three axes perpendicular to each other perpendicular to each other, A device safety verification method comprising a step of finely adjusting the position and posture of an operator model . A computer-readable storage medium storing a program for causing a computer to execute each step of the device safety verification method according to any one of claims 4 to 6 .

Images