Field Tests of a Portable MEMS Gravimeter.

Field Tests of a Portable MEMS Gravimeter.
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DOI:
10.3390/s17112571
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发表时间:
2017-11-08
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
通讯作者:
Hammond GD
Hammond GD
中科院分区:
其他
文献类型:
--
作者:
Middlemiss RP;Bramsiepe SG;Douglas R;Hough J;Paul DJ;Rowan S;Hammond GD

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重力仪用于测量地下的密度异常。它们被应用于从火山学到石油和天然气勘探的许多不同领域,但目前的商业系统成本高,规模大。一种新型的重力传感器已经被开发出来,它采用了与制造移动的手机加速度计相同的制造方法。在这项研究中,我们描述了第一个结果的现场便携式微机电系统(MEMS)重力仪。重力仪的稳定性证明,通过进行一个多天的测量与ms的标准偏差。然后证明,在重力加速度的ms的变化,可以测量的设备之间移动的顶部和底部的20.7米升降机轴的信噪比(SNR)为14.25。最后,该设备被证明是稳定的,在一个更恶劣的环境:ms重力变化之间的顶部和底部的275米的山与信噪比为15.88。这些初步的现场测试是迈向芯片大小重力传感器的重要一步。
Gravimeters are used to measure density anomalies under the ground. They are applied in many different fields from volcanology to oil and gas exploration, but present commercial systems are costly and massive. A new type of gravity sensor has been developed that utilises the same fabrication methods as those used to make mobile phone accelerometers. In this study, we describe the first results of a field-portable microelectromechanical system (MEMS) gravimeter. The stability of the gravimeter is demonstrated through undertaking a multi-day measurement with a standard deviation of ms. It is then demonstrated that a change in gravitational acceleration of ms can be measured as the device is moved between the top and the bottom of a 20.7 m lift shaft with a signal-to-noise ratio (SNR) of 14.25. Finally, the device is demonstrated to be stable in a more harsh environment: a ms gravity variation is measured between the top and bottom of a 275-m hill with an SNR of 15.88. These initial field-tests are an important step towards a chip-sized gravity sensor.
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