非均质床垫硬度测试的方法及改进

doi:10.3969/j.issn.1000-1158.2022.11.13

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摘要针对使用较广泛的EN 1957:2012 与QBT 1952.2-2011(LGA法)床垫硬度测试方法,提出了3种优化方法。首先,设置2个实验对比组:1组为8款弹簧床垫,另1组为8款海绵床垫,利用特制测试仪测得各床垫的加载挠度曲线,并假设这2组实验床垫因材料的不同其硬度有明显差异;其次,分别使用LGA测试方法及3种优化方法对2组实验床垫进行测算;最后,利用组间和组内t检验得出较好的测算方法。结果显示:LGA测试方法及优化方法2对床垫硬度的测试基于人为规定,测试结果不具有唯一性;优化方法2、3显示2组间的硬度有明显差异,与假设相符;优化方法3对床垫硬度值的测算具有唯一性,且不受测试设备的影响,是较为理想的优化方法。

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	刘美
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关键词 ：计量学, 床垫硬度, 硬度测试法, 优化方法, t检验

Abstract：Three optimization methods for the widely used EN 1957:2012 and QBT 1952.2-2011(LGA) test methods are proposed. First, two experimental comparison groups were set up:one group is 8 spring mattresses, the other is 8 foam mattresses. The loading deflection curves of each mattress were measured by a special tester, and these 2 groups of experimental mattresses were assumed. There were obvious differences in hardness and softness due to different materials. Secondly, the LGA test method and three optimization methods were used to measure the two groups of experimental mattresses. Finally, a better calculation method was obtained by using the between-group and intra-group t tests. The results show that the LGA test method and optimization method two are based on artificial regulations, and the test results are not unique; optimization methods two and three show that there is a significant difference in softness and hardness between the two groups, which is consistent with the hypothesis. The third optimization method is unique in the calculation of the mattress softness and hardness value, and is not affected by the testing equipment, it is an ideal optimization method.

Key words： metrology mattress hardness hardness measurement method optimization method t test

收稿日期: 2021-05-24 发布日期: 2022-11-14

PACS:

TB938.2

基金资助:国家重点研发计划(2016YFD0600704)

通讯作者: 申黎明(1960-), 男, 上海宝山人, 南京林业大学教授, 博士, 主要从事人体工程学方的研究。Email:shenlimingda@hotmail.com E-mail: shenlimingda@hotmail.com

作者简介: 刘美(1995-), 女, 山西朔州人, 南京林业大学在读硕士研究生, 研究方向为家具设计与工程。Email:892334270@qq.com

引用本文:

刘美,申黎明,卢涛,房娇娇. 非均质床垫硬度测试的方法及改进[J]. 计量学报, 2022, 43(11): 1470-1479.
LIU Mei,SHEN Li-ming,LU Tao,FANG Jiao-jiao. Method and Improvement of Hardness Test of Heterogeneous Mattress. Acta Metrologica Sinica, 2022, 43(11): 1470-1479.

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