Ultra-miniature force plate for measuring triaxial forces in the micronewton range
Ultra-miniature force plate for measuring triaxial forces in the micronewton range
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DOI：
10.1242/jeb.094177
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发表时间：
2014-03-01
影响因子：
2.8
通讯作者：
Blickhan, Reinhard
中科院分区：
文献类型：
--
作者：
Reinhardt, Lars;Blickhan, Reinhard
测量单腿的地面反作用力对于了解腿运动的动力学是必不可少的。由于现有技术水平，研究仅限于体重超过1 g的动物。在这里，我们提出了一种新的超微型力平台的设计，制造，校准和性能的微牛顿级。该传感器采用立体光刻技术制造，并配备了半导体应变片。我们发现在校准的力范围内到+/- 1300 μ N的高度线性信号响应。个别测试表明，我们的测力板在高达4 mN的力下仍显示出线性响应，这证实了大测量范围和特别的鲁棒性。在所有方向上的灵敏度都在50 V N-1以上，这使得可以分辨10 μ N的力。我们证明了一个典型的地面反作用力测量的蚂蚁，多爪蚁的基础上，该设备的适用性。
Measuring the ground reaction forces of a single leg is indispensable to understanding the dynamics of legged locomotion. Because of the technical state of the art, investigations are limited to animals with a body mass above 1 g. Here we present the design, fabrication, calibration and performance of a novel ultra-miniature force platform at the micronewton level. The sensor was built using the stereolithography technology and is equipped with semiconductor strain gauges. We found a highly linear signal response in the calibrated force range to +/- 1300 mu N. Individual tests revealed that our force plate still shows a linear response at forces as great as 4 mN, confirming a large measuring range and particular robustness. The sensitivity was above 50 V N-1 in all directions, which makes it possible to resolve forces of 10 mu N. We demonstrated the suitability of the device on the basis of a typical ground reaction force measurement of an ant, Formica polyctena.