摘要
为了进一步提高睡眠质量,自行设计了一种全新的三孔式排骨床架并建立了数学模型。采用主客观实验相结合的方式进行睡眠舒适性评价,测试结果满足性能要求。利用人体压力分布测量系统对三孔式排骨床与普通板床进行科学对比分析,记录两种睡姿下的人体全身压力分布数据,使用MATLAB软件对数据进行深度分析,同时进行主观舒适性问卷调查,统计分析主观舒适性评价数据。数据显示三孔式排骨床相比较普通板床,最大压力降低19.6%,平均压力下降2.4%,接触面积增大5.3%,总压力增大3.3%,人体纵向压力与接触面积分布曲线比较合理,表现为背部、臀部与脚部等骨突部位的接触面积明显增大,局部压力大幅度降低,腰部与腿部获得了足够的支撑,主观舒适评价级别提高两个等级。结果表明:三孔式排骨床架极大地降低了局部压力,增大了全身接触面积,通过分散局部压力,降低了人体骨骼突点的支撑压迫感,改善了局部肌肉的舒适度,纠正了脊柱排列方式。主客观评价实验结果的一致性,验证了三孔式排骨床架的睡眠舒适性,为今后床具设计的舒适性分析提供了新的方法。
To study the sleeping comfort bed,a new three-hole ribs bedframe and the stress and strain model was proposed.The combination of subjective and objective experiments is used to evaluate sleeping position comfort.The result shows all of the mechanical properties satisfy the technical requirement.The pressure distribution measurement system of human body was used to make a scientific comparative analysis of the three-hole ribs bed and the ordinary plate bed.The data in two sleeping positions were deeply analyzed by MATLAB.Meanwhile,a subjective comfort questionnaire was conducted to statistically analyze the subjective feeling of volunteers.It was found that the maximum pressure of the three-hole ribs bed reduced by 19.6%,the average pressure decreased by 2.4%,the contact area enlarged by 5.3%,and the total pressure increased by 3.3%.The distribution curve of longitudinal pressure and contact area of human body was relatively reasonable.It was shown that the contact area of bone protrusions such as the back,hips and feet increase obviously,and the local pressure decreased greatly.The waist and legs were provided with sufficient support.At the same time,the subjective comfort evaluation level was improved by two levels.The results showed the three-hole ribs bed greatly reduces the local pressure and increases the contact area of the whole body.By dispersing the local pressure,it improved the comfort of the local muscles and corrects the spinal alignment to decrease the compressive sense of the bone protrusion.The results of subjective and objective evaluation experiment were consistent,which verify the sleep comfort of the three-hole ribs bedframe,and provided a new method for the comfort analysis of bed design in the future.
作者
张开拓
陶庆
康金胜
李兆波
王寿栋
Kai-tuo ZHANG;Qing TAO;Jin-sheng KANG;Zhao-bo LI;Shou-dong WANG(Department of Mechanical Engineering,Xinjiang University,Urumqi 830047,China;Department of Engineering Design and Physical Sciences,Brunel University,London UB83PH,UK)
出处
《机床与液压》
北大核心
2020年第12期17-25,54,共10页
Machine Tool & Hydraulics
基金
国家自然科学基金资助项目(51865056)
机械制造系统工程国家重点实验室(sklms2018006)。
