Results 1 to 10 of about 127,679 (252)

Data Quality Assessment of Gravity Recovery and Climate Experiment Follow-On Accelerometer

open access: yesSensors
Accelerometers are mainly used to measure the non-conservative forces at the center of mass of gravity satellites and are the core payloads of gravity satellites.
Zongpeng Pan, Yun Xiao
doaj   +1 more source

Resonance Effect Decrease and Accuracy Increase of Piezoelectric Accelerometer Measurement by Appropriate Choice of Frequency Range

open access: yesShock and Vibration, 2018
A suitable piezoelectric accelerometer mathematical model is proposed to extract a relationship of motion relative frequency as a function of natural frequency.
Zine Ghemari   +2 more
doaj   +1 more source

A New Z-axis Resonant Micro-Accelerometer Based on Electrostatic Stiffness

open access: yesSensors, 2015
Presented in the paper is the design, the simulation, the fabrication and the experiment of a new z-axis resonant accelerometer based on the electrostatic stiffness. The new z-axis resonant micro-accelerometer, which consists of a torsional accelerometer
Bo Yang   +3 more
doaj   +1 more source

Study protocol of the self‐monitoring activity program: Effects of activity on incident dementia

open access: yesAlzheimer’s & Dementia: Translational Research & Clinical Interventions, 2019
Introduction Numerous studies have focused on nonpharmacological interventions on cognitive function and the effects of cognitive function on daily living.
Hiroyuki Shimada   +6 more
doaj   +1 more source

Using open source accelerometer analysis to assess physical activity and sedentary behaviour in overweight and obese adults

open access: yesBMC Public Health, 2018
Background Physical activity and sedentary behaviour are difficult to assess in overweight and obese adults. However, the use of open-source, raw accelerometer data analysis could overcome this.
Paul Innerd, Rory Harrison, Morc Coulson
doaj   +1 more source

Pengembangan Mekanisme Change Detection Untuk Efisiensi Energi Pada Wifi-Based Indoor Positioning System

open access: yesJurnal ELTIKOM: Jurnal Teknik Elektro, Teknologi Informasi dan Komputer, 2020
Pengembangan mekanisme change detection mempunyai peranan penting terhadap Indoor Positioning System (IPS). Namun permasalahan yang masih umum dijumpai adalah konsumsi energi yang tinggi, karena proses WiFi scanning berjalan secara terus menerus.
Ade Hendi   +2 more
doaj   +1 more source

A Method for Gravitational Apparent Acceleration Identification and Accelerometer Bias Estimation

open access: yesIEEE Access, 2019
Accelerometer bias in an inertial navigation system (INS) is the key factor determining the navigation accuracy. Two methods, named separated calibration and system calibration are always used for acceleration bias calibration.
Xixiang Liu   +4 more
doaj   +1 more source

High Temperature Endurable Fiber Optic Accelerometer

open access: yesShock and Vibration, 2014
This paper presents a low frequency fiber optic accelerometer for application in high temperature environments of civil engineering structures. The reflection-based extrinsic fiber optic accelerometer developed in this study consists of a transmissive ...
Yeon-Gwan Lee   +2 more
doaj   +1 more source

Movement artefact removal from NIRS signal using multi-channel IMU data

open access: yesBioMedical Engineering OnLine, 2018
Background The non-invasive nature of near-infrared spectroscopy (NIRS) makes it a widely accepted method for blood oxygenation measurement in various parts of the human body.
Masudur R. Siddiquee   +5 more
doaj   +1 more source

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

open access: yesSensors, 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   +4 more
doaj   +1 more source

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