Bio-inspired micro-fluidic angular-rate sensor for vestibular prostheses.

Bio-inspired micro-fluidic angular-rate sensor for vestibular prostheses.
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DOI:
10.3390/s140713173
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发表时间:
2014-07-22
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
通讯作者:
Georgiou J
Georgiou J
中科院分区:
其他
文献类型:
--
作者:
Andreou CM;Pahitas Y;Georgiou J

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This paper presents an alternative approach for angular-rate sensing based on the way that the natural vestibular semicircular canals operate, whereby the inertial mass of a fluid is used to deform a sensing structure upon rotation. The presented gyro has been fabricated in a commercially available MEMS process, which allows for microfluidic channels to be implemented in etched glass layers, which sandwich a bulk-micromachined silicon substrate, containing the sensing structures. Measured results obtained from a proof-of-concept device indicate an angular rate sensitivity of less than 1 °/s, which is similar to that of the natural vestibular system. By avoiding the use of a continually-excited vibrating mass, as is practiced in today's state-of-the-art gyroscopes, an ultra-low power consumption of 300 μW is obtained, thus making it suitable for implantation.
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