摘要
目的基于弹簧振子原理,研制一种可用于失重条件的人体质量测量装置,并完成地面测试。方法装置使用直线滚珠轴承和直线光轴配合,减小摩擦并使往复运动更加平稳。地面测试中,采用气浮方法抵消重力,模拟失重条件对装置进行了实验测试,测试分为刚性砝码实验和柔性人体实验。刚性砝码实验测试范围为45~80kg,间隔质量为5kg,每个质量测量3次。柔性人体实验对质量在45~80kg范围的7名受试者进行测量,每人测量5次。结果砝码质量测量误差在±0.25%以内,人体质量测量误差在±0.5%以内。结论该装置测量精度较高,可用于太空人体质量测量。
Objective Based on the principle of spring oscillator,a mass measuring device that could be used in weightless condition was developed,and the ground tests were carried out.Methods A linear ball bearing and a linear smooth shaft were used in the device to reduce the friction and make the reciprocating motion more stable.During ground test,the air floatation method was used to counteract the gravity and thus simulate the weightless condition.The tests included the rigid weight experiment and flexible human body experiment.For the rigid weight test,the mass measurement range was 45~80 kg with an increment interval of 5 kg and each mass was measured 3 times.For the flexible human test,7 people with different masses ranging from 45 kg to 80 kg were measured and each mass was measured 5 times.Results The measurement error was within±0.25%in weight mass test and within±0.5%in human body mass test.Conclusion The device has high measurement accuracy and can be used for human body mass measurement in space.
作者
娄仁志
刘金生
芮泽皓
张洪军
Lou Renzhi;Liu Jinsheng;Rui Zehao;Zhang Hongjun(China Jiliang University,Hangzhou Zhejiang 310018,China;不详)
出处
《航天医学与医学工程》
CAS
CSCD
北大核心
2019年第6期503-507,共5页
Space Medicine & Medical Engineering
关键词
失重条件
弹簧振子原理
砝码质量测量
人体质量测量
weightless conditions
spring oscillator principle
weight mass measurement
body mass measurement
