System and method for evaluating a workspace represented by a three-dimensional model

• US 5,590,268 A
• Filed: 03/30/1994
• Issued: 12/31/1996
• Est. Priority Date: 03/31/1993
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Nishida, Ikiko, Doi, Miwako, Kato, Nobuko, Fukui, Mika
• Primary Examiner(s): Bayerl, Raymond J.
• Application Number:
  US08/220,180
• Time in Patent Office: 1,007 Days
• Field of Search: 395/155, 395/161, 395/159, 395/119, 395/127, 395/120, 395/152, 345/139, 345/157, 345/156, 364/578
• US Class Current: 715/848
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30
• CPC Class Codes: G06T 7/20 Analysis of motion motion estimation for coding, decoding, compressing or decompressing digital video signals H04N19/43, H04N19/51
• CPC Class Codes: G06V 20/52 Surveillance or monitoring of activities, e.g. for recognising suspicious objects recognising microscopic objects G06V20/69

Abstract

An evaluation system which can quantitatively evaluate a virtually produced workspace by adequately providing conditions of an operator and the workspace. The system calculates a motion of the operator on the basis of the input conditions of the operator and the workspace, and a task sequence in the workspace, and displays data for evaluation of the calculated motion of the operator.

Claims

1. A system for evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined operator model to conduct a motion in said workspace, said system comprising:

first setting means for setting a sequence in which said operator model conducts a motion in said workspace, and for setting objects at which said operator model is to gaze when said operator model conducts a motion in accordance with said sequence; and

display means for visibly displaying on a screen a visual field area of each of said objects which is set by said first setting means, a visual field area being defined when said operator model gazes at an object which is set.

2. The system of claim 1, further comprising:

second setting means for arbitrarily setting physical features of said operator model; and

generation means for generating a new operator model on the basis of physical features which are set by said second setting means, whereby a visual field area for each of said objects which have been set is newly displayed.

3. The system of claim 2, further comprising calculation means for calculating a difference between a new visual field area obtained when physical features are newly set, and a visual field area obtained before the process of newly setting physical features, wherein a calculating result of said calculation means is displayed.

4. The system of claim 2, wherein said physical features which are set by said second setting means include a height, a sitting height, and a range of movement of each body part.

5. The system of claim 1, further comprising:

means for changing an arrangement of objects arranged in said workspace, whereby a visual field area for each of said objects is newly displayed.

6. The system of claim 1, further comprising

third setting means for arbitrarily setting said visual field area.

7. The system of claim 1, further comprising

fourth setting means for arbitrarily setting a sequence in which said operator model conducts a motion in said workspace.

8. The system of claim 7, wherein the setting of a sequence in which said operator model conducts a motion by said fourth setting means is conducted by displaying instructions on said screen.

9. The system of claim 1, wherein a display of said visual field area comprises a view of said operator model and is located at a position on said screen which is outside said workspace.

10. The system of claim 1, further comprising:

judging means for judging whether or not a visual field area of an object which is disposed in said workspace and at which said operator model is to gaze is interfered by another object, wherein a judging result of said judging means is displayed.

11. A system for evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined operator model to conduct a motion in said workspace, said system comprising:

definition means for defining a task sequence of said operator model in said workspace;

execution means for executing said task sequence defined by said definition means;

designation means for designating objects at which said operator model caused to conduct a motion by said execution means is to gaze;

counting means for, when said operator model gazes at an object designated by said designation means in a task defined by said definition means, counting a number of interferences which are introduced to a visual field area of said object by another object; and

display means for displaying a counting result obtained by said counting means.

12. The system of claim 11, wherein said counting result displayed by said display means is displayed for each of said objects at which said operator model gazes.

13. A system for evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined operator model to conduct a motion in said workspace, said system comprising:

definition means for defining a motion of said operator model in said workspace;

execution means for executing said motion defined by said definition means; and

reexecution means for, when a change occurs in an arrangement of said various objects, in said operator model, or in said motion of said operator model, newly executing a motion which is defined in accordance with said change.

14. The system of claim 13, further comprising:

fifth setting means for setting a position of an object disposed in said workspace at which said operator model is to gaze in accordance with said motion of said operator model which is defined by said definition means.

15. The system of claim 14, further comprising:

display means for displaying a visual field area in accordance with a visual field angle which is previously set based on a position of said object which is set by said fifth setting means.

16. The system of claim 13, wherein said change of said operator model is conducted by changing physical features of said operator model.

17. A system for evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined operator model to conduct a motion in said workspace, said system comprising:

first definition means for defining a reachable area of each part of said operator model;

second definition means for defining a motion of said operator model in said workspace with respect to one of said various objects to be reached;

execution means for executing said motion of said operator model which is defined by said second definition means;

judging means for, when said execution means executes said motion of said operator model, judging whether or not said one of said various objects to be reached is within said reachable area defined by said first definition means; and

display means for displaying a judging result of said judging means.

18. The system of claim 17, further comprising:

sixth setting means for setting a face or a position of said one of said various objects to be reached, wherein said judging means judges whether or not said face or position of said one of said various objects to be reached which is set by said sixth setting means is within said reachable area.

19. A system for evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined operator model to conduct a motion in said workspace, said system comprising:

definition means for defining a motion of said operator model in said workspace with respect to said various objects;

execution means for executing said motion defined by said definition means;

classifying and measuring means for classifying motions executed by said execution means as types of motions, and for measuring the number of said motions classified and a duration period of each of said motions; and

display means for displaying a result of said classifying and measuring means.

20. The system of claim 19, further comprising:

calculation means for calculating a fatigue value in accordance with a value which is previously set based on a result obtained by said classifying and measuring means; and

display means for displaying a result of said calculation means.

21. The system of claim 20, wherein, said calculation means calculates a fatigue value in accordance with data of a visual field angle of said operator model during a motion.

22. A system of evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined operator model to conduct a motion in said workspace, said system comprising:

input means for inputting conditions relating to said operator model and said workspace;

condition storing means for storing conditions which are input via said input means;

sequence input means for inputting a task sequence in said workspace;

sequence storing means for storing said task sequence which is input via said sequence input means;

motion calculation means for calculating a motion of said operator model on the basis of said task sequence stored in said sequence storing means and said conditions stored in said condition storing means; and

display means for displaying said workspace with respect to said motion of said operator model which is calculated by said motion calculation means.

23. A system for evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined operator model to conduct a motion in said workspace, said system comprising:

input means for inputting conditions relating to said operator model and said workspace;

condition storing means for storing conditions which are input via said input means;

sequence input means for inputting task sequence in said workspace;

sequence storing means for storing said task sequence which is input via said sequence input means;

interference judging means for conducting an interference check on a visual field of said operator model and on interference targets in accordance with said task sequence stored in said sequence storing means and said conditions stored in said condition storing means;

interference counting means for counting a number of interferences which are judged by said interference judging means for each of said interference targets stored in said condition storing means; and

display means for displaying a count result of said interference counting means.

24. A system for evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined virtual subject to conduct a motion in said workspace, said system comprising:

condition storing means for storing workspace data which include a shape of at least one of said various objects of said workspace, an arrangement of said one of said various objects, a shape of said workspace wherein said one of said various objects is disposed, and virtual subject data which include an arrangement and a shape of a virtual subject conducting work in said workspace and data for generating motion of said virtual subject;

display means for displaying said workspace and said virtual subject;

designation means for designating one of said various objects which is to be operated by said virtual subject in said workspace, or a plurality of said various objects which are to be operated by the virtual subject and a sequence of said plurality of said various objects; and

operability judging means for judging whether or not said virtual subject can operate said one of said various objects or said plurality of said various objects designated by said designation means.

25. The system of claim 24, wherein

said display means further displays a reachable area of said virtual subject which is stored in said condition storing means, and wherein

said operability judging means comprises inclusion judging means for judging whether or not said one of said various objects or said plurality of said various objects designated by said designation means is within said reachable area.

26. The system of claim 25, wherein

said condition storing means further stores an operable area for an object which represents an operation target,

said display means further displays said operable area, and

said operability judging means further judges whether or not said operable area of said one of said various objects or said plurality of said various objects designated by said designation means is within said reachable area via said inclusion judging means.

27. A system for evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined virtual subject to conduct a motion in said workspace, said system comprising:

condition storing means for storing workspace data which include a shape of at least one of said various objects of said workspace, an arrangement of said one of said various objects, a shape of said workspace where said one of said various objects is disposed, and virtual subject data which include an arrangement and a shape of a virtual subject conducting work in said workspace and data for generating motion of said virtual subject;

display means for displaying said workspace and said virtual subject;

work designation means for designating one work in said workspace, or plural works and a sequence of said plural works;

motion generation means for generating a motion of said virtual subject in accordance with said one work or said plural works designated via said work designation means;

motion measuring means for measuring a frequency and a duration of each motion generated by said motion generation means,

fatigue data storing means for storing fatigue data in accordance with said frequency and said duration of each of said motions; and

fatigue calculation means for calculating a fatigue of said virtual subject on the basis of each motion measured by said motion measuring means, and on the basis of fatigue data stored in said fatigue data storing means.

28. The system of claim 27, wherein

said motion generation means comprises representing fatigue means for changing a generated motion in accordance with a fatigue calculated by said fatigue calculation means, and executes a motion generation reflecting said fatigue via said representing fatigue means, and wherein

said display means further displays a motion which is generated reflecting said fatigue.

29. A system for evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined operator model to conduct a motion in said workspace, said system comprising:

condition storing means for storing workspace data which include a shape of at least one of said various objects of said workspace, an arrangement of said one of said various objects, a shape of said workspace where said one of said various objects is disposed, and virtual subject data which include an arrangement and a shape of a virtual subject conducting work in said workspace and data for generating motion of said virtual subject;

display means for displaying said workspace and said virtual subject;

designation means for designating one of said various objects which is to be operated by said virtual subject in said workspace, or a plurality of said various objects which are to be operated and an operation sequence of said plurality of said various objects;

virtual subject visual field display means for displaying a visual field from an individual viewpoint of one or plural virtual subjects existing in said condition storing means; and

visual field designation means for designating a visual field of a virtual subject which is to be displayed to said virtual subject visual field display means.

30. A method for evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined operator model to conduct a motion in said workspace, said method comprising the steps of:

setting a sequence in which said operator model conducts a motion in said workspace and objects at which said operator model is to gaze when said operator model conducts said motion in accordance with said sequence; and

displaying a visual field area on a screen for each of said objects which is set, said visual field area being obtained when said operator model gazes at an object which was set.

31. The method of claim 30, further comprising the steps of:

arbitrarily setting physical features of said operator model;

generating a new operator model on the basis of said physical features which are set; and

newly displaying a visual field area for each object which was set.

32. The method of claim 31, further comprising the steps of:

calculating a difference between a new visual field area obtained when said physical features are newly set and a visual field area obtained before a process of newly setting said physical features; and

displaying a calculated result.

33. The method of claim 31, further comprising the steps of:

judging whether or not a visual field area of an object which is disposed in said workspace and at which said operator model is to gaze is interfered by another object; and

displaying a judged result.

34. The method of claim 30, further comprising the steps of:

changing an arrangement of said various objects arranged in said workspace; and

newly displaying a visual field area for each object which was set.

35. A method for evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined operator model to conduct a motion in said workspace, said method comprising the steps of:

defining a task sequence of said operator model in said workspace;

executing said task sequence which is defined;

designating an object at which said operator model is to gaze;

counting a number of interferences which are produced for a visual field area of said object by another object when said operator model gazes at a designated object in accordance with said task sequence; and

displaying a counted result.

36. A method for evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined operator model to conduct a motion in said workspace, said method comprising the steps of:

defining a motion of said operator model in said workspace;

executing said motion defined; and

newly executing a motion which is defined on the basis of a change of an arrangement of said various objects, said operator model, or a motion of said operator model.

37. The method of claim 36, further comprising the step of setting a position of an object in said workspace toward which said operator model is to gaze, in accordance with a defined motion of said operator model.

38. The method of claim 37, further comprising the step of displaying a visual field area in accordance with a visual field angle which is previously set based on a position of an object which is set.

39. A method for evaluating a virtually produced workspace wherein various objects are arranged, by causing a predetermined operator model to conduct a motion in said workspace, said method comprising the steps of:

defining a reachable area of each part of said operator model;

defining a motion of said operator model in said workspace with respect to one of said various objects to be reached;

executing said motion of said operator model which is defined;

judging whether or not said one of said various objects to be reached is within said reachable area defined while executing said motion of said operator model; and

displaying a judging result.