20 papers · ranked by Valyu relevance
S. Veena, Newton Rai, H L Suresh, Veda Sandeep Nagaraja
- This paper presents the design, simulation, and analytical modeling of the single proposed axis MEMSbased capacitive accelerometer. Analytical modeling has been done for frequency and displacement sensitivity. The performance of the accelerometer was tested for both static and dynamic conditions, and the…
Carlos Alvarado-Serrano, Ghulam Jilani Quadri, Jennifer Adorno Nieves, Paul Rosen
'Paul Rosen'] Every year we grow more dependent on wearable devices to gather personalized data, such as our movements, heart rate, respiration, etc. To capture this data, devices contain sensors, such as accelerometers and gyroscopes, that are able to measure changes in their surroundings and pass along the…
Dunzhu Xia, Mohan Yao, Jinhui Li, Xudong Zou + 1 more
A tri-axis accelerometer with a digital readout circuit and communication system is introduced. It is composed of two resonant accelerometers in the x and y-axis, and a seesaw capacitive one in the z-axis. The device is encapsulated in air to ensure that the z-axis works in an over-damped state. Moreover, the…
Akarapu Ashok, Adarsh Ganesan
—This paper presents a comprehensive analytical and simulation-based study of curved electrode geometries for enhancing the sensitivity of MEMS capacitive accelerometers. Expressions for the capacitance between a planar movable electrode and six distinct fixed electrode profiles (biconvex, biconcave, concavo-convex…
Guowen Liu, Yu Liu, Xiao Ma, Xuefeng Wang + 3 more
'Zhonghe Jin' 'Ion Stiharu'] This paper presents a novel method for the performance of an all-silicon accelerometer by adjusting the ratio of the Si-SiO2 bonding area, and the Au-Si bonding area in the anchor zone, with the aim of eliminating stress in the anchor region. The study includes the development of an…
Zayed Ahmed, Charles Duruaku, Fatemeh Edalatfar, Mehrdad Moallem + 2 more
'Behraad Bahreyni' 'Ha Duong Ngo'] We present a high-performance capacitive accelerometer with a sub-µg noise limit and 1.2 kHz bandwidth for particle acceleration detection applications. The low noise of the accelerometer is achieved through a combination of device design optimization and operation under vacuum to…
Sergiusz Łuczak, Magdalena Ekwińska, Daniel Tomaszewski, Grigoris Kaltsas
'Grigoris Kaltsas'] A novel design of a MEMS (Micro-Electromechanical System) capacitive accelerometer fabricated by surface micromachining, with a structure enabling precise auto-calibration during operation, is presented. Precise auto-calibration was introduced to ensure more accurate acceleration measurements…
Bo Yuan, Zhifeng Tang, Pengfei Zhang, Fuzai Lv + 3 more
'Manuel Rodríguez-Martín' 'João Ribeiro' 'Roberto García Martín'] The application of MEMS accelerometers used to measure inclination is constrained by their temperature dependence, and each accelerometer needs to be calibrated individually to increase stability and accuracy. This paper presents a calibration and…
Hui Yu, Shujie Liang, Florian T. Muijres, Jan Severin te Lindert + 4 more
Flight behaviours have been extensively studied from different angles such as their kinematics, aerodynamics and more general their migration pattern. Nevertheless, much is still unknown about the daily flight activity of birds, in terms of their performance, behaviour and the potential differences between males and…
Levin, Michal, Itzik Klein
Low-cost micro-electromechanical accelerometers are widely used in navigation, robotics, and consumer devices for motion sensing and position estimation. However, their performance is often degraded by bias errors. To eliminate deterministic bias terms a calibration procedure is applied under stationary conditions. It…
Kosuke Yamamoto, Patrick C. Kelly, Manoranjan Majji, Felipe Guzmán
Accelerometers Authors: ['Kosuke Yamamoto' 'Patrick C. Kelly' 'Manoranjan Majji' 'Felipe Guzmán'] In this work a method for using accelerometers for the determination of angular velocity and acceleration is presented. Minimum sensor requirements and insights into how an array of accelerometers can be configured to…
Shahla Bakian Dogaheh, Mohammad Hassan Moradi
In this paper, we aim to propose a model for automatic sleep stage classification based on physiological signals acquired by Dreem Headband and extreme gradient boosting (XGBoost) method. The dataset used in this study belongs to a challenge competition, namely as “Challenge Data”, held in 2017-2018, and is publicly…
Bruce Hopenfeld
Obtaining reliable rate heart estimates from waist based electrocardiograms (ECGs) poses a very challenging problem due to the presence of extreme motion artifacts. The literature reveals few, if any, attempts to apply motion artifact cancellation methods to waist based ECGs. This paper describes a new methodology for…
João Veiga, Susana Lima, Luís Silva, Vítor Hugo Carneiro + 8 more
'Mário Pinhão' 'Arminda Manuela Gonçalves' 'Maria Teresa Malheiro' 'Álvaro Miguel Sampaio' 'José Meireles' 'António J. Pontes' 'José Machado' 'Haim Abramovich'] Machine end-effector kinematic analysis is critical to optimizing transporting components where inertial forces are the main loads. While displacements may be…
Darren Wilkinson, Adam Kane, Mark Jessopp, John L. Quinn
Biologging has transformed ecological research, yet studying the at-sea behaviour of small seabirds remains challenging due to trade-offs between device size and data resolution. Miniature GPS devices (<1 g) have been deployed on storm-petrels but their coarse temporal resolution limits behavioural classification…
Jing Zhang, N. Mokus, J. Casoli, Antonin Eddi + 1 more
field measurements Authors: ['Jing Zhang' 'N. Mokus' 'J. Casoli' 'Antonin Eddi' "St 'ephane Perrard"] Smartphones are widespread objects that have been used as physics sensors for the general public thanks to their availability, high connectivity and built-in sensors. Here, we present the use of a fleet of smartphones…
Anandhu Suresh, Karnam Venkata Manga Raju
— Most of the advanced control systems use sensorbased feedback for robust control. Tilt angle estimation is key feedback for many robotics and mechatronics applications in order to stabilize a system. Tilt angle cannot be directly measured when the system in consideration is not attached to a stationary frame. it is…
Luciano Chiominto, Emanuela Natale, Giulio D’Emilia, Sante Alessandro Grieco + 4 more
'Sante Alessandro Grieco' 'Andrea Prato' 'Alessio Facello' 'Alessandro Schiavi' 'Ha Duong Ngo'] Sensors based on MEMS technology, in particular Inertial Measurement Units (IMUs), when installed on vehicles, provide a real-time full estimation of vehicles’ state vector (e.g., position, velocity, yaw angle, angular rate…
Oliver G. Goldman, Gerald Dubowitz, David Anderson
Acute exposure to hypoxia at attitude has neurologic effects. Some subjects develop severe neurologic symptoms, including Parkinsonism, when hypoxic at high altitude as part of an Acute Mountain Sickness syndrome. Digital health technologies can provide continuous monitoring and objective, real-world measures of…
Gerard Aristizábal Pla, Douglas N. Martini, Michael Potter, Wouter Hoogkamer
The zero-velocity update (ZUPT) method has become a popular approach to estimate foot kinematics from foot worn inertial measurement units (IMUs) during walking and running. However, the accuracy of the ZUPT method for stride parameters at sprinting speeds remains unknown, specifically when using sensors with…