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Biomedical Measurement Using the Levitation Mass Method

机译：悬浮质量法生物医学测量

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摘要

The mechanical response of a palm of a human hand against impact force is accurately determined by means of a practical method, a variation of the Levitation Mass Method. In the method, a mass that is levitated with a pneumatic linear bearing, and hence encounters negligible friction, is made to collide with a material under test. During the collision the Doppler frequency shift of a laser beam reflecting from the mass is accurately measured using an optical interferometer. The velocity, position, acceleration and inertial force of the mass are calculated from the measured time-varying Doppler shift. The method is characterized by the fact that preparation of the test specimen is very easy, the testing time is very short and the measurement accuracy is very high. The possibility of using the method for biomedical engineering is discussed.
机译：借助于实用方法，即悬浮质量法的一种变型，可以准确地确定人手掌对冲击力的机械响应。在该方法中，使悬浮有气动线性轴承并因此可忽略不计的摩擦的质量块与被测材料发生碰撞。在碰撞过程中，使用光学干涉仪可精确测量从质量反射的激光束的多普勒频移。根据测得的时变多普勒频移计算质量的速度，位置，加速度和惯性力。该方法的特点是试样制备简单，测试时间短，测量精度高。讨论了将该方法用于生物医学工程的可能性。

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