Tri-axis convective accelerometer with closed-loop heat source

Dau , Van Thanh and Dinh, Thien Xuan and Lam, Dang Bao and Tran , Canh-Dung and Bui, Tung Thanh and Phan , Thanh Hoa (2018) Tri-axis convective accelerometer with closed-loop heat source. Sensors and Actuators A: Physical, 275. pp. 51-59. ISSN 0924-4247

Abstract

In this paper, we report the details and findings of a study on tri-axis convective accelerometer, which is designed with the closed-loop type heat source and thermal sensing hotwire elements. The closed-loopheat source enhances the convective flow to the central part where a hotwire is placed to measure the vertical component of acceleration. The simulation was conducted using numerical analysis, and the devicewas prototyped by additive manufacturing. The device, functioning as a tilt sensor and an accelerometer,was tested up to acceleration of 20 g. The experiments were successfully conducted and the experimental results agreed reasonably with those obtained by numerical analysis. The results demonstrated that the closed-loop heat source could reduce the cross effect between the acceleration components. The scalefactor and cross-sensitivity had the values of 0.26 micro�V/g and 1.2%, respectively. The cross-sensitivity andthe effects of heating power were also investigated in this study.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Accepted version embargoed until 1 May 2019 (12 months), in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 05 Apr 2018 23:52
Last Modified: 05 Apr 2018 23:58
Uncontrolled Keywords: convective accelerometer, tri-axis, closed-loop heater, hotwire, OpenFOAM
Fields of Research : 09 Engineering > 0915 Interdisciplinary Engineering > 091599 Interdisciplinary Engineering not elsewhere classified
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
URI: http://eprints.usq.edu.au/id/eprint/33942

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