scholarly journals Characterization of Piezoresistive PEDOT:PSS Pressure Sensors with Inter-Digitated and Cross-Point Electrode Structures

Sensors ◽  
2015 ◽  
Vol 15 (1) ◽  
pp. 818-831 ◽  
Author(s):  
Jer-Chyi Wang ◽  
Rajat Karmakar ◽  
Yu-Jen Lu ◽  
Chiung-Yin Huang ◽  
Kuo-Chen Wei
Keyword(s):  
Pressure Sensors ◽  
Cross Point ◽  
Point Electrode

Temperature characterization of flip-chip packaged piezoresistive barometric pressure sensors

2014 ◽  
Vol 20 (4-5) ◽  
pp. 861-867 ◽  
Author(s):  
T. Waber ◽  
W. Pahl ◽  
M. Schmidt ◽  
G. Feiertag ◽  
S. Stufler ◽  
...  
Keyword(s):  
Flip Chip ◽  
Pressure Sensors ◽  
Barometric Pressure

scholarly journals Simulations and Experimental Investigations on the Acoustic Characterization of Centrifugal Pumps of Different Specific Speed

2019 ◽  
Vol 4 (3) ◽  
pp. 16
Author(s):  
Christian Lehr ◽  
Andreas Linkamp ◽  
Daniel Aurich ◽  
Andreas Brümmer
Keyword(s):  
Dynamic Pressure ◽  
Pressure Sensors ◽  
Dipole Source ◽  
Experimental Investigations ◽  
Acoustic Excitation ◽  
Centrifugal Pumps ◽  
Transmission Parameters ◽  
Acoustic Characterization ◽  
Specific Speed

Subject of discussion are simulations and experimental investigations on the acoustic characterization of three single stage centrifugal pumps of different specific speed. In operation, these pump-types generate pressure pulsation at blade passing frequency, primarily due to rotor-volute-interaction. In order to determine the acoustic excitation it is necessary to know about the pumps’ acoustic transmission parameters. In this paper, a one-dimensional numerical model for transient time-domain simulation is presented, which takes into account the pump geometry as well as the volutes’ structural behaviour by means of the local effective speed of sound. Numerical results for the transmission characteristics of the three different pumps are shown in terms of scattering matrices and evaluated against parameters calculated from measurement results. The experimental analyses are carried out using dynamic pressure sensors in both the suction and the discharge pipe. Assuming solely plane wave propagation, the complex acoustic field on each side is evaluated independently. The so called “two source” method is then used to determine the transmission parameters of the pumps in standstill for a range of frequencies experimentally. Subsequently, the acoustic excitation at varying rotational speed is evaluated by means of measurements at the pumps in operation and presented as monopole and dipole source types for cavitation-free conditions.

Fabrication and characterization of bending and pressure sensors for a soft prosthetic hand

2018 ◽  
Vol 28 (3) ◽  
pp. 034001 ◽  
Author(s):  
Rui Pedro Rocha ◽  
Pedro Alhais Lopes ◽  
Anibal T de Almeida ◽  
Mahmoud Tavakoli ◽  
Carmel Majidi
Keyword(s):  
Pressure Sensors ◽  
Prosthetic Hand ◽  
Fabrication And Characterization

High temperature characterization of PZT(0.52/0.48) thin-film pressure sensors

2013 ◽  
Vol 24 (1) ◽  
pp. 015017 ◽  
Author(s):  
M Asadnia ◽  
A G P Kottapalli ◽  
J M Miao ◽  
A B Randles ◽  
A Sabbagh ◽  
...  
Keyword(s):  
Thin Film ◽  
High Temperature ◽  
Pressure Sensors ◽  
Film Pressure

Development and Characterization of PVDF Thin Films for pressure sensors

2018 ◽  
Vol 5 (10) ◽  
pp. 21082-21090 ◽  
Author(s):  
T.S. Roopaa ◽  
H.N. Narasimha Murthy ◽  
V.V. Praveen Kumar ◽  
M. Krishna
Keyword(s):  
Thin Films ◽  
Pressure Sensors

New control methodology for a morphing wing demonstrator

2017 ◽  
Vol 232 (8) ◽  
pp. 1479-1494 ◽  
Author(s):  
Michel Joël Tchatchueng Kammegne ◽  
Yvan Tondji ◽  
Ruxandra Mihaela Botez ◽  
Lucian Teodor Grigorie ◽  
Mahmoud Mamou ◽  
...  
Keyword(s):  
Pressure Sensors ◽  
Open Loop ◽  
Post Processing ◽  
Pressure Data ◽  
Morphing Wing ◽  
Subsonic Wind Tunnel ◽  
Logic Control ◽  
Flexible Part ◽  
Control Methodology

A morphing wing can improve the aircraft aerodynamic performance by changing the wing airfoil depending on the flight conditions. In this paper, a new control methodology is presented for a morphing wing demonstrator tested in a subsonic wind tunnel in the open-loop configuration. Actuators integrated inside the wing are used to modify the flexible structure, which is an integral part of the wing. In this project, the actuators are made in-house and controlled with logic control, which is developed within the main frame of this work. The characterization of the flow (laminar or turbulent) over the wing is obtained starting from the pressure signals measured over the flexible part of the wing (upper surface). The signals are acquired by using some pressure sensors (Kulite sensors) incorporated in this flexible part of the wing upper surface. The technique used to collect Kulite pressure data and the post-processing methodology are explained. The recorded pressure data are sometimes subjected to noise, which is filtered before being processed. The standard deviation and power spectrum visualization of the pressure data approaches are used to evaluate the quality of the flow over the wing and estimate the transition point position in the area monitored by the Kulite sensors. In addition, infrared thermography visualization is implemented to observe the transition region over the entire wing upper surface, and to validate the methodology applied to the pressure data in this way. The demonstrator measures 1.5 m chordwise and 1.5 m spanwise. Four miniature actuators fixed on two actuation lines are used to morph the wing. The wing is also equipped with a rigid aileron. The experimental aerodynamic results obtained after post processing validate the numerical prediction for the transition location.

Wireless-based Monitoring of Body Movements Using Wearable Sensors

2006 ◽  
Vol 920 ◽  
Author(s):  
Sarah Brady ◽  
Shirley Coyle ◽  
Yanzhe Wu ◽  
Gordon Wallace ◽  
Dermot Diamond
Keyword(s):  
Biomedical Applications ◽  
Wearable Sensors ◽  
Pressure Sensors ◽  
Wearable Computing ◽  
Health Indicators ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Wireless Sensor Nodes ◽  
Molecular Nature

AbstractThe world is becoming more health conscious and as a result healthcare is evolving in many ways. Wearable computing is assisting with this evolution, finding its place in many biomedical applications where real-time monitoring of general health indicators is required. However, the inconvenience of connecting sensors through wires, which not only incurs high maintenance, limits the freedom of the person therefore hampering a true reflection of the person's actions. By using sensors attached to wireless sensor nodes, this constraint is removed. Also in order to be “wearable” the sensors must be comfortable, a factor often overlooked by traditional sensors, where functionality and robustness are of higher importance. This work is focused on the use of foam-based pressure sensors and similar textile-based sensors for monitoring the ambulatory movements of the wearer. Characterization of the molecular nature of the materials and their environment are presented. We find these sensors to be successful in detecting the movement events without imposing on the daily activity of the wearer.

Sign in / Sign up

Export Citation Format

Share Document