نتایج جستجو برای: 2d accelerometer

تعداد نتایج: 90332  

2017
Jieh-Shian Young Hong-Yi Hsu Chih-Yuan Chuang

This paper introduces an alternative approach to the camber angle measurement for vehicle wheel alignment. Instead of current commercial approaches that apply computation vision techniques, this study aims at realizing a micro-control-unit (MCU)-based camber inspection system with a 3-axis accelerometer. We analyze the precision of the inspection system for the axis misalignments of the acceler...

Journal: :Telemedicine journal and e-health : the official journal of the American Telemedicine Association 2012
Shu Nishiguchi Minoru Yamada Koutatsu Nagai Shuhei Mori Yuu Kajiwara Takuya Sonoda Kazuya Yoshimura Hiroyuki Yoshitomi Hiromu Ito Kazuya Okamoto Tatsuaki Ito Shinyo Muto Tatsuya Ishihara Tomoki Aoyama

Smartphones are very common devices in daily life that have a built-in tri-axial accelerometer. Similar to previously developed accelerometers, smartphones can be used to assess gait patterns. However, few gait analyses have been performed using smartphones, and their reliability and validity have not been evaluated yet. The purpose of this study was to evaluate the reliability and validity of ...

Journal: :Journal of obesity & weight loss therapy 2011
C U Manohar S K McCrady Y Fujiki I T Pavlidis J A Levine

BACKGROUND Physical activity is important in health and weight management. Several cell phone platforms integrate an accelerometer onto the motherboard. Here we tested the validity of the cell phone accelerometer to assess physical activity in a controlled laboratory setting. METHODS 31 subjects wore the cell phone on their waist along with the validated Physical Activity Monitoring System (P...

2011
Liju Joshua

Automated recognition of worker activities has the potential in aiding quick assessment of labour productivity on construction sites. A novel method called accelerometer based activity recognition has been investigated and preliminary results show that it has good potential for deployment in construction environment. The major decisive factor influencing the performance of the activity recognit...

2016
Pekka Siirtola Juha Röning

In this study, a novel user-independent method to recognize activities accurately in situations where traditional accelerometer based classification contains a lot of uncertainty is presented. The method uses two recognition models: one using only accelerometer data and other based on sensor fusion. However, as a sensor fusionbased method is known to consume more battery than an accelerometer-b...

2011
Cheryce L Harrison Russell G Thompson Helena J Teede Catherine B Lombard

BACKGROUND Currently, little is known about physical activity patterns in pregnancy with prior estimates predominantly based on subjective assessment measures that are prone to error. Given the increasing obesity rates and the importance of physical activity in pregnancy, we evaluated the relationship and agreement between subjective and objective physical activity assessment tools to inform re...

2012
Jérémy Vanhelst Laurent Béghin Alain Duhamel Patrick Bergman Michael Sjöström Frédéric Gottrand

BACKGROUND Different types of devices are available and the choice about which to use depends on various factors: cost, physical characteristics, performance, and the validity and intra- and interinstrument reliability. Given the large number of studies that have used uniaxial or triaxial devices, it is of interest to know whether the different devices give similar information about PA levels a...

2013
Carly Rich Mario Cortina-Borja Carol Dezateux Marco Geraci Francesco Sera Lisa Calderwood Heather Joshi Lucy J Griffiths

OBJECTIVES To investigate the biological, social, behavioural and environmental factors associated with non-consent, and non-return of reliable accelerometer data (≥2 days lasting ≥10 h/day), in a UK-wide postal study of children's activity. DESIGN Nationally representative prospective cohort study. SETTING Children born across the UK, between 2000 and 2002. PARTICIPANTS 13 681 7 to 8-yea...

2015
Yongle Lu Leilei Li Ning Hu Yingjun Pan Chunhua Ren

Force producer is one of the core components of a Wire Suspended Micro-Pendulum Accelerometer; and the stability of permanent magnet in the force producer determines the consistency of the acceleration sensor's scale factor. For an assembled accelerometer; direct measurement of magnetic field strength is not a feasible option; as the magnetometer probe cannot be laid inside the micro-space of t...

2012
Pavan Kumar Abid Ali Khan Karthik Reddy

–Mechatronics is one of the promising trends in the era of computing in today’s system automation industry and control. The proposed project is one such attempt of designing an accelerometer based system to communicate with an industrial robotic arm wirelessly. This project comprises of design and implementation of the robotic arm powered with Cortex–M3 based LPC1768 core. The core has to be in...

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