SENSORS, 2002 IEEE
Cơ quản chủ quản: N/A
Các bài báo tiêu biểu
New surface acoustic wave gas sensor of the mass-sensitive type sensitive to the thermal properties of gases
Tập 1 - Trang 372-375 vol.1
The basic principles of a new surface acoustic wave (SAW) gas sensor are
described. Being essentially a sensor of the mass-sensitive type, the proposed
device possesses certain features of the thermometric SAW sensors and is not
only sensitive to the vapors of volatile substances, but capable of detecting
gases by their thermal properties as well. This principles consists of making a
certain delay...
#Surface acoustic waves #Acoustic waves #Gas detectors #Gases #Temperature sensors #Sensor phenomena and characterization #Thermal sensors #Sensor systems #Surface acoustic wave devices #Acoustic sensors
The wavelength sensor using optical directional coupler
Tập 1 - Trang 83-85 vol.1
This paper proposes a wavelength sensor based on an optical directional coupler.
The finite-difference time-domain (FDTD) method is used to calculate of the
light intensity propagating thorough the structure, and to find the appropriate
dimensions of the structure. The device with the width and thickness of 0.4 /spl
mu/m/spl times/0.6 /spl mu/m, which corresponds to the coupling length of 40
/spl ...
#Optical sensors #Directional couplers #Optical propagation #Finite difference methods #Optical refraction #Optical variables control #Time domain analysis #Optical coupling #Refractive index #Signal resolution
Electronic interface modules for solid-state chemical sensors
Tập 1 - Trang 344-349 vol.1
Plug and play modules for interfacing three common types of solid-state chemical
sensors are presented The self-contained (integrated circuit) modules detect a
baseline signal from a sensor and auto-zero the signal to compensate for
baseline variations, both immediately after fabrication and periodically during
the lifetime of the sensor The signal compensation technique is based on the
governing ...
#Solid state circuits #Chemical sensors #Polymer films #Chemical analysis #Performance analysis #Sensor phenomena and characterization #Nonvolatile memory #Application specific integrated circuits #Plugs #Signal detection
Low-cost magnetic torque sensor principle
Tập 2 - Trang 901-904 vol.2
The torque is measured in a contactless technique without special treatment of
the shaft, using the magneto-elastic effect of ferromagnetic materials. Strain
or stress due to moments lead to a change of magnetic properties of the material
(hysteresis deformation, permeability changes). Magnetoelastic sensors are
distinguished by robustness and good reproducibility. However, inhomogeneities
of the ...
#Magnetic sensors #Magnetic materials #Saturation magnetization #Shafts #Magnetic hysteresis #Stress #Torque measurement #Magnetic field induced strain #Magnetic properties #Permeability
Just add sensor - integrating analog and digital signal conditioning in a programmable system on chip
Tập 1 - Trang 665-668 vol.1
Programmable mixed signal microcontrollers offer opportunities for the design of
very low cost smart sensors.. A number of examples are shown which illustrate
the performance and flexibility of the PSoC microcontroller in sensor
applications.
#Sensor systems #Electrical resistance measurement #Pulse width modulation #Central Processing Unit #Intelligent sensors #Resistors #Communication system control #Clocks #Current measurement #Registers
Numerical modeling of sensing and actuating electromechanical transducers
Tập 2 - Trang 1233-1238 vol.2
A numerical scheme for the modeling of coupled field problems arising in sensor
and actuator technology is reported. This scheme has been implemented in
software and allows the precise numerical computation of coupled field problems
(linear and nonlinear) as typically arising in the design of electrostatic,
magnetomechanical and piezoelectric transducers (sensors and/or actuators). This
software i...
#Numerical models #Piezoelectric transducers #Magnetic sensors #Electromechanical sensors #Couplings #Magnetic separation #Electrostatic actuators #Hydraulic actuators #Piezoelectric actuators #Finite element methods
A kinetic study of analyte-receptor binding and dissociation for surface plasmon resonance biosensor applications
Tập 1 - Trang 282-287 vol.1
A fractal analysis which takes into account the effect of surface heterogeneity
brought about by ligand immobilization on the reaction kinetics is presented.
The binding and dissociation of estrogen receptors ER/spl alpha/ and ER/spl
beta/ to different ligands is analyzed within the fractal framework. The
heterogeneity on the biosensor surface is made quantitative by using a single
number, the fra...
#Kinetic theory #Plasmons #Resonance #Biosensors #Fractals #Endocrine system #Humans #Wildlife #Erbium #Regression analysis
Transient response chemical discrimination module
Tập 1 - Trang 376-381 vol.1
This paper describes a broad-base portable chemical discrimination module
capable of using combinations of homogenous or heterogeneous arrays of chemical
sensors for evaluating chemical type. Several types of sensors can be added to
or removed from the system in plug and play fashion. Using these sensors, the
module supplies the user with real-time chemical discrimination information.
Included in ...
#Transient response #Chemical sensors #Sensor arrays #Signal processing #Circuits #Dynamic range #Sensor systems #Plugs #Process design #Signal design
Emergent wireless sensor network limitations: a plea for advancement in core technologies
Tập 2 - Trang 1505-1509 vol.2
The next several years will witness the evolution of sensor networks from simple
test-and-report wired systems to intricate wireless information fabrics that
connect our surroundings to the information super highway and cyberspace. These
systems will be applied to agricultural monitoring, medical monitoring,
intelligent space realization, automotive safety, personal area networks, and
even wartime...
#Wireless sensor networks #Intelligent sensors #Space technology #Biomedical monitoring #Intelligent networks #Intelligent vehicles #Humans #Neurons #Radio frequency #Sensor systems
Integrated 2-D optical lenses designed in PDMS layer to improve fluorescence spectroscopy using optical fibers
Tập 1 - Trang 187-191 vol.1
In this paper, the fabrication, characterization and test of 2D-optical lenses
using PDMS material are reported in order to perform on a portable chip a
fluorescence spectroscopy using optical fibers. The technological steps to make
the PDMS layer are first detailed, and the patterns then checked with a SEM. By
comparing different interfacial structures, it is shown that the light beam
characteris...
#Integrated optics #Lenses #Optical design #Fluorescence #Spectroscopy #Optical fibers #Optical sensors #Optical device fabrication #Materials testing #Optical fiber testing