使用国际测试标准提高印度轮椅质量
Ritu Ghosh1, Pooja Behera1, Soikat Ghosh Moulic2
1Mobility India Rehabilitation Research & Training Centre, Bengaluru, India.
Disability and rehabilitation. Assistive technology
|March 9, 2025
概括
在印度测试的五辆手动轮椅中,有两辆符合稳定性和耐用性的ISO质量标准. 当地制造的车型提供了经济高效,可靠的选择,突出了监管标准的必要性,以防止轮椅过早故障.
科学领域:
- 康复工程 康复工程
- 生物医学工程 生物医学工程
- 产品安全标准 产品安全标准
背景情况:
- 轮椅故障和废弃是印度的重大问题.
- 需要评估印度常用的手动成人轮椅的质量.
- 国际标准 (ISO 7176) 为评估轮椅性能提供了一个框架.
研究的目的:
- 为了评估印度使用的五个手动成人轮椅的静态稳定性和耐用性.
- 为了确定这些轮椅是否符合基于ISO 7176-1和ISO 7176-8标准的最低质量要求.
- 为印度的用户确定具有成本效益的轮椅选择.
主要方法:
- 五个手动轮椅 (WC1-WC5) 在符合ISO标准的实验室中进行了测试.
- 静态稳定性根据ISO 7176-1 (倾斜角度) 进行了评估.
- 耐用性使用ISO 7176-8 (多鼓和边缘降落测试) 用100公斤的模拟机来评估,分类失败.
主要成果:
- 两个轮椅 (WC1和WC2) 通过了耐用性测试,符合ISO标准.
- WC1 (进口) 和WC2 (本地制造经济模式) 证明了合规性.
- 由于结构 (III类) 的故障,WC3,WC4和WC5的耐用性失败了. 与WC1相比,WC2是最具成本效益的选择.
结论:
- 印度迫切需要使用ISO 7176标准对产品质量进行监管,以提高轮椅的可靠性.
- 应优先考虑符合ISO标准的,在当地制造的,具有成本效益的轮椅,如WC2.
- 监管机构应该授权ISO测试和监督,未来重点是性能评级和适合印度条件的设计.
相关概念视频
01:19Testing a Claim about Standard Deviation
A complete procedure to test a claim about population standard deviation or population variance is explained here.
The hypothesis testing for the claim of population standard deviation (or variance) requires the data and samples to be random and unbiased. The population distribution also must be normal. There is no specific requirement on the sample size as the estimation is based on the chi-square distribution.
As a first step, the hypothesis (null and alternative) concerning the claim about...
The hypothesis testing for the claim of population standard deviation (or variance) requires the data and samples to be random and unbiased. The population distribution also must be normal. There is no specific requirement on the sample size as the estimation is based on the chi-square distribution.
As a first step, the hypothesis (null and alternative) concerning the claim about...
01:05Quality Control
Quality control is one of the three cyclical quality assurance activities that help keep a system under statistical control. Typical quality control activities include creating quality control charts, conducting proficiency testing, and documenting and archiving results.
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
01:19Quality Assurance
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01:14Testing Water Quality
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01:22Vebe Test
The Vebe test is a method used to measure the workability of concrete, particularly effective for dry concrete mixes. This test employs a specific apparatus that includes a cylindrical chamber, a standard slump cone, and a transparent disc-shaped rider, all mounted on a vibrating table. The cylindrical chamber has dimensions of nine and a half inches in diameter and eight inches in height.
To conduct the test, concrete is placed into the slump cone. The concrete is filled in layers and...
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01:18Mechanical Characteristics of Steel
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The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used to...
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used to...