운전자의 체압 분포 및 시트변형에 대한 정량화 측정시스템
Body Pressure Distribution and Textile Surface Deformation Measurement for Quantification of Automotive Seat Design Attributes
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Proper seat design is critical to the safety, comfort, and ergonomics of automotive driver’s seats. To ensure effective seat design, quan- titative methods should be used to evaluate the characteristics of automotive seats. This paper presents a system that is capable of simul- taneously monitoring body pressure distribution and surface deformation in a textile material. In this study, a textile-based capacitivesensor was used to detect the body pressure distribution in an automotive seat. In addition, a strain gauge sensor was used to detect thedegree of curvature deformation due to high-pressure points. The textile-based capacitive sensor was fabricated from the conductive fab- ric and a polyurethane insulator with a high signal-to-noise ratio. The strain gauge sensor was attached on the guiding film to maximizethe effect of its deformation due to bending. Ten pressure sensors were placed symmetrically in the hip area and six strain gauge sensorswere distributed on both sides of the seat cushion. A readout circuit monitored the absolute and relative values from the sensors in real- time, and the results were displayed as a color map. Moreover, we verified the proposed system for quantifying the body pressure andfabric deformation by studying 18 participants who performed three predefined postures. The proposed system showed desirable resultsand is expected to improve seat safety and comfort when applied to the design of various seat types. Moreover, the proposed system will provide analytical criteria in the design and durability testing of automotive seats.
Abstract
Proper seat design is critical to the safety, comfort, and ergonomics of automotive driver’s seats. To ensure effective seat design, quan- titative methods should be used to evaluate the characteristics of automotive seats. This paper presents a system that is capable of simul- taneously monitoring body pressure distribution and surface deformation in a textile material. In this study, a textile-based capacitivesensor was used to detect the body pressure distribution in an automotive seat. In addition, a strain gauge sensor was used to detect thedegree of curvature deformation due to high-pressure points. The textile-based capacitive sensor was fabricated from the conductive fab- ric and a polyurethane insulator with a high signal-to-noise ratio. The strain gauge sensor was attached on the guiding film to maximizethe effect of its deformation due to bending. Ten pressure sensors were placed symmetrically in the hip area and six strain gauge sensorswere distributed on both sides of the seat cushion. A readout circuit monitored the absolute and relative values from the sensors in real- time, and the results were displayed as a color map. Moreover, we verified the proposed system for quantifying the body pressure andfabric deformation by studying 18 participants who performed three predefined postures. The proposed system showed desirable resultsand is expected to improve seat safety and comfort when applied to the design of various seat types. Moreover, the proposed system will provide analytical criteria in the design and durability testing of automotive seats.
참고문헌 (10)
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