Results 11 to 20 of about 127,679 (252)

Design and optimization of a novel tri-axial miniature ear-plug piezoresistive accelerometer with nanoscale piezoresistors [PDF]

open access: yes, 2013
This work aims at the advancement of state-of-art accelerometer design and optimization methodology by developing an ear-plug accelerometer for race car drivers based on a novel mechanical principle. The accelerometer is used for the measurements of head
Messina, M.
core   +7 more sources

Increase of Three-Axis Accelerometer Sensitivity Using Capacitor in Spring [PDF]

open access: yesAUT Journal of Electrical Engineering, 2022
This study has introduced a three-axis capacitive accelerometer, in which the part of the capacitor that calculates acceleration is installed in the z direction in the spring to improve the sensitivity in the said direction.
kamran Delfan Hemmati   +1 more
doaj   +1 more source

Structural Design and Optimization of a Resonant Micro-Accelerometer Based on Electrostatic Stiffness by an Improved Differential Evolution Algorithm

open access: yesMicromachines, 2021
This study designed an in-plane resonant micro-accelerometer based on electrostatic stiffness. The accelerometer adopts a one-piece proof mass structure; two double-folded beam resonators are symmetrically distributed inside the proof mass, and only one ...
Libin Huang   +5 more
doaj   +1 more source

Accelerometer-assessed physical activity in epidemiology: Are monitors equivalent? [PDF]

open access: yes, 2017
PURPOSE: Accelerometers are increasingly being used to assess physical activity in large-scale surveys. Establishing whether key physical activity outcomes can be considered equivalent between three widely-used accelerometer brands would be a significant
Charlotte L. Edwardson (7152536)   +16 more
core   +7 more sources

The impact of selected methodological factors on data collection outcomes in observational studies of device-measured physical behaviour in adults: A systematic review

open access: yesInternational Journal of Behavioral Nutrition and Physical Activity, 2023
Background Accelerometer measures of physical behaviours (physical activity, sedentary behaviour and sleep) in observational studies offer detailed insight into associations with health and disease.
Richard M. Pulsford   +18 more
doaj   +1 more source

A Novel Two-Axis Differential Resonant Accelerometer Based on Graphene with Transmission Beams

open access: yesSensors, 2022
In this paper, a novel two-axis differential resonant accelerometer based on graphene with transmission beams is presented. This accelerometer can not only reduce the cross sensitivity, but also overcome the influence of gravity, realizing fast and ...
Yang Xiao   +4 more
doaj   +1 more source

Enhancing the Shock Response Performance of Micromachined Silicon Resonant Accelerometers by Electrostatic Active Damping Control

open access: yesMicromachines, 2021
This paper presents a micromachined silicon resonant accelerometer based on electrostatic active damping control, which can improve the shock response performance of the accelerometer.
Libin Huang   +5 more
doaj   +1 more source

Fabrication of a Miniaturized ZnO Nanowire Accelerometer and Its Performance Tests

open access: yesSensors, 2016
This paper reports a miniaturized piezoelectric accelerometer suitable for a small haptic actuator array. The accelerometer is made with zinc oxide (ZnO) nanowire (NW) grown on a copper wafer by a hydrothermal process.
Hyun Chan Kim, Sangho Song, Jaehwan Kim
doaj   +1 more source

A Model of Gravity Vector Measurement Noise for Estimating Accelerometer Bias in Gravity Disturbance Compensation

open access: yesSensors, 2018
Compensation of gravity disturbance can improve the precision of inertial navigation, but the effect of compensation will decrease due to the accelerometer bias, and estimation of the accelerometer bias is a crucial issue in gravity disturbance ...
Junbo Tie   +5 more
doaj   +1 more source

A Novel Calibration Method for Gyro-Accelerometer Asynchronous Time in Foot-Mounted Pedestrian Navigation System

open access: yesSensors, 2021
Pedestrian Navigation System (PNS) is one of the research focuses of indoor positioning in GNSS-denied environments based on the MEMS Inertial Measurement Unit (MIMU). However, in the foot-mounted pedestrian navigation system with MIMU or mobile phone as
Tianyu Chen   +4 more
doaj   +1 more source

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