Article (Scientific journals)
Micromachined accelerometers with sub-µg/ Hz noise floor: A review
Wang, Chen; Chen, F.; Wang, Y. et al.
2020In Sensors, 20 (14)
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Keywords :
Accelerometer review; Accelerometer structure; Inertial sensors; Low-g accelerometer; Micro-Electro–Mechanical System (MEMS); Micromachined/micro accelerometers; Seismometer; Floors; High quality factors; Interface circuits; Large proof mass; Micromachined accelerometers; Research and development; Scale Factor; Sensing schemes; Spring constants; Accelerometers
Abstract :
[en] This paper reviews√ the research and development of micromachined accelerometers with a noise floor lower than 1 µg/ Hz. Firstly, the basic working principle of micromachined accelerometers is introduced. Then, different methods of reducing the noise floor of micromachined accelerometers√ are analyzed. Different types of micromachined accelerometers with a noise floor below 1 µg/ Hz are discussed. Such sensors can mainly be categorized into: (i) micromachined accelerometers with a low spring constant; (ii) with a large proof mass; (iii) with a high quality factor; (iv) with a low noise interface circuit; (v) with sensing schemes leading to a high scale factor. Finally, the characteristics of various micromachined accelerometers and their trends are discussed and investigated. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Wang, Chen ;  Université de Liège - ULiège > Montefiore Institute
Chen, F.;  SIMIT, Chinese Academy of Sciences, Shanghai, 200050, China
Wang, Y.;  PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China
Sadeghpour, S.;  ESAT-MICAS, University of Leuven, Leuven, 3001, Belgium
Wang, C.;  ESAT-MICAS, University of Leuven, Leuven, 3001, Belgium
Baijot, Mathieu
Esteves, R.;  ESAT-MICAS, University of Leuven, Leuven, 3001, Belgium
Zhao, C.;  PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China
Bai, J.;  College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
Liu, H.;  PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China
Kraft, Michael ;  Université de Liège - ULg
Language :
English
Title :
Micromachined accelerometers with sub-µg/ Hz noise floor: A review
Publication date :
2020
Journal title :
Sensors
ISSN :
1424-8220
eISSN :
1424-3210
Publisher :
Multidisciplinary Digital Publishing Institute (MDPI), Switzerland
Volume :
20
Issue :
14
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Natural Science Foundation of Hubei Province: 2019CFB108Science Challenge Project: TZ2016006-0502-02
Available on ORBi :
since 01 October 2021

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