Results 41 to 50 of about 261,095 (203)

Actigraph Accelerometer-Defined Boundaries for Sedentary Behaviour and Physical Activity Intensities in 7 Year Old Children [PDF]

, 2011
Background: Accurate objective assessment of sedentary and physical activity behaviours during childhood is integral to the understanding of their relation to later health outcomes, as well as to documenting the frequency and distribution of physical ...
Cortina-Borja, M, Carly Rich, Richard M. Pulsford, Lucy J. Griffiths, Dezateux Carol, Lucy Griffiths, Kinnafick Florence-Emilie, Kinnafick, FE, Lucy J Griffiths, Dezateux, C, Richard M Pulsford, Mario Cortina-Borja, Griffiths Lucy J., Kinnafick, F-E, Rich, C, Florence-Emilie Kinnafick, Kinnafick, Florence-Emilie, Cortina-Borja Mario, Carol Dezateux, Pulsford, R M, Griffiths, LJ, Rich Carly, Pulsford Richard M., Pulsford, RM, Griffiths, L J   +24 more
core   +1 more source

Quasi-Static Calibration Method of a High-g Accelerometer

Sensors, 2017
To solve the problem of resonance during quasi-static calibration of high-g accelerometers, we deduce the relationship between the minimum excitation pulse width and the resonant frequency of the calibrated accelerometer according to the second-order ...
Yan Wang, Jinbiao Fan, Jing Zu, Peng Xu
doaj   +1 more source

3D-MODELING OF QUARTZ GLASS SENSORY ELEMENTS OF HEMISPHERICAL RESONATOR GYRO AND PENDULUM ACCELEROMETER [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2019
Subject of Research. The paper considers physical processes occurring in sensory elements of angular rate and apparent acceleration measuring devices, such as hemispherical resonator gyro and pendulum accelerometer. Inertial masses of the studied sensory
D. S. Gnusarev, E. A. Deputatova, V. V. Skorobogatov   +2 more
doaj   +1 more source

Implementation of a CMOS/MEMS Accelerometer with ASIC Processes

Micromachines, 2019
This paper presents the design, simulation and mechanical characterization of a newly proposed complementary metal-oxide semiconductor (CMOS)/micro-electromechanical system (MEMS) accelerometer. The monolithic CMOS/MEMS accelerometer was fabricated using
Yu-Sian Liu, Kuei-Ann Wen
doaj   +1 more source

A Monolithic CMOS-MEMS Reconfigurable/Tunable Capacitive Accelerometer with Integrated Sensing Circuits

Frontiers in Mechanical Engineering, 2022
MEMS accelerometers have been widely used in various applications with a wide range of signal levels and bandwidth. Therefore it is desired to have a sensor whose characteristics such as sensitivity and bandwidth can be reconfigured/tuned depending on ...
Yi Chiu, Cheng-Yen Lin, Hao-Chiao Hong
doaj   +1 more source

Design and Demonstration of an In-Plane Micro-Optical-Electro-Mechanical-System Accelerometer Based on Talbot Effect of Dual-Layer Gratings

Micromachines, 2023
An ultrasensitive single-axis in-plane micro-optical-electro-mechanical-system (MOEMS) accelerometer based on the Talbot effect of dual-layer gratings is proposed.
Wenqing Chen, Li Jin, Zhibin Wang, Haifeng Peng, Mengwei Li   +4 more
doaj   +1 more source

A Geometrically Transient Platform for Bioelectronic Implants

Advanced Materials, EarlyView.
Minimally invasive bioelectronic implants often compromise performance for smaller sizes. To resolve this optimization dilemma, a wireless bioelectronic implant with a transient geometry is introduced (MiFi). The origami‐inspired device miniaturizes up to sixfold for syringe insertion and autonomously unfolds post‐implantation.
Selin Olenik, John D. Goodwin, Atharv Naik, Philip Coatsworth, Ioi Chit Cheung, Farbod Amirghasemi, Anies Sohi, Ehsan Abedi, Tayeb Tadlaoui, Maral P. S. Mousavi, Andriy S. Kozlov, Victoria Salem, Andrew S. Cowburn, Firat Guder   +13 more
wiley   +1 more source

A Subnano-g Electrostatic Force-Rebalanced Flexure Accelerometer for Gravity Gradient Instruments

Sensors, 2017
A subnano-g electrostatic force-rebalanced flexure accelerometer is designed for the rotating accelerometer gravity gradient instrument. This accelerometer has a large proof mass, which is supported inversely by two pairs of parallel leaf springs and is ...
Shitao Yan, Yafei Xie, Mengqi Zhang, Zhongguang Deng, Liangcheng Tu   +4 more
doaj   +1 more source

Recent Advances of Slip Sensors for Smart Robotics

Advanced Materials Technologies, EarlyView.
This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang, Liao Wu, Shuai He, Zhao Sha, Yuwan Huang, Shuying Wu, Dewei Chu, Chun H. Wang, Shuhua Peng   +8 more
wiley   +1 more source

Research status and development trend of silicon resonant MEMS accelerometer

Gongneng cailiao yu qijian xuebao
The silicon resonant MEMS (Micro-Electro-Mechanical System) accelerometer offers several advantages, including small size, high precision, low power consumption, and strong anti-interference capabilities, making it a highly promising high-precision MEMS ...
Jin-tao WANG, Fei LIU, Hui-tong CAO, Chen-zheng LI, Yan-chao SHEN, Yong-sheng WANG, Tian-ling REN   +6 more
doaj   +1 more source