Virtual Human Body Model for Equipment Operability Evaluation
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Solution Overview
Problem
Current methods for evaluating equipment operability struggle to assess the serial operability of equipment, particularly in achieving a purpose through multiple operations, as they fail to account for variations in human body posture and user knowledge levels, leading to inadequate evaluation of equipment usability by test subjects with different physiques.
Innovation Solution
An apparatus and method that utilize a human body model with appropriate posture in a three-dimensional virtual space to evaluate equipment operability by simulating multiple operations, calculating the posture for each operation, and recording the operation results to assess the equipment's usability based on the human body model's posture and target information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a human body model is arranged in a three-dimensional virtual space to evaluate equipment operability, then the evaluation can be performed virtually without physical testing, but it becomes difficult to verify the serial operability of multiple operations and the appropriateness of human body posture for each operation
Solution Approach 1:
The evaluation process is segmented into multiple discrete operation steps, with each step having defined start and end positions. The human body model's posture is segmented into specific configurations for each operation, allowing precise verification of serial operability through step-by-step validation rather than continuous motion analysis.
Solution Approach 2:
The appropriate human body posture for each operation is predetermined and stored in advance. Instead of calculating posture in real-time during evaluation, the system pre-defines correct postures for each operation step, enabling efficient verification by comparing actual model postures against these pre-established standards.
2Adaptability or versatility
If different body types depending on race and sex are represented by human body models using statistical values, then diverse physiques can be evaluated, but it requires collecting data from all physiques which is practically difficult
Solution Approach 1:
Instead of using actual human test subjects, the system creates virtual copies (human body models) that replicate various physiques using statistical data. These digital twins allow evaluation of diverse body types without requiring physical collection of data from numerous individuals, reducing the quantity of physical subjects needed while maintaining evaluation versatility.
Solution Approach 2:
The system evaluates multiple physiques by changing key physical parameters (such as body dimensions, proportions) of the human body model based on statistical values for different races and sexes. This parameter-based approach enables versatile multi-physique evaluation without requiring separate physical test subjects for each body type.
3Measurement precision
If the operability is evaluated based on the operation of a user interface unit, then the interface functionality can be verified, but it cannot assess whether a series of operations can be smoothly performed until a purpose is attained
Solution Approach 1:
The system merges interface operation verification with human body posture evaluation and serial operation sequencing. Instead of evaluating interface clicks in isolation, it combines these with the physical actions required to reach and operate interface elements, providing a comprehensive assessment that includes both interface functionality and the smoothness of the complete operation sequence from physical interaction to digital response.
Data Source
AI summary
When an input unit of the equipment operability evaluating apparatus selects the human body type of the human body model and a scenario, the posture calculation unit calculates an appropriate operating posture of the human body model having the physique of the selected human body type for each of the supposed operations set by the supposed operation setting unit, and the simulation unit arranges an equipment model and a human body model having the calculated operating posture in the three-dimensional virtual space, and displays the view image as an image of the three-dimensional virtual space viewed from the point of view of the human body model. The operation recording unit records the operation result of the equipment model on the view image, and the operability evaluation unit evaluates the operability of the equipment based on the recorded operation result.