SENSORS, 2002 IEEE
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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
A textile based capacitive pressure sensor
Tập 2 - Trang 1625-1630 vol.2
This paper introduces an approach for decoding the pressure information exerted
over a broad piece of fabric by means of capacitive sensing. The proposed sensor
includes a distributed passive array of capacitors (i.e. an array where no
active elements are involved), whose capacitance depends on the pressure exerted
on the textile surface, and an electronic system that acquire and process the
subse...
#Capacitive sensors #Sensor arrays #Capacitors #Capacitance measurement #Pressure measurement #Decoding #Fabrics #Sensor systems #Textile fibers #Performance evaluation
Optical and electrical gas sensing properties of In/sub x/O/sub y/N/sub z/ films
Tập 1 - Trang 623-626 vol.1
In this paper we describe the optical and electrical gas sensing properties of
In/sub x/O/sub y/N/sub z/ films promoted by an ultra-thin gold overlayer. We
have fabricated In/sub x/O/sub y/N/sub z/ films with a nanocrystalline porous
structure by RF-sputtering in Ar/N/sub 2/ followed by an annealing process. Gold
particles with 20-30 nm diameter on top of the In/sub x/O/sub y/N/sub z/ films
have b...
#Optical films #Optical sensors #Temperature sensors #Absorption #Wavelength measurement #Gold #Hydrogen #Temperature measurement #Fluid flow measurement #Temperature distribution
Vapor phase SAW immunoassay sensors
Tập 1 - Trang 335-338 vol.1
In this paper, we present the results of a series of experiments demonstrating
real-time vapor phase detection of cocaine molecules using immunosensors based
on surface acoustic wave (SAW) resonators.
#Surface acoustic waves #Immune system #Surface acoustic wave devices #Acoustic waves #Temperature sensors #Biosensors #Electrodes #Acoustic sensors #Phase detection #Chemical sensors
Common design techniques for quartz rate sensors for both automotive and aerospace/defense market applications
Tập 2 - Trang 1597-1602 vol.2
In the early 1990s, Systron Donner Inertial Division (SDID), a subsidiary of BEI
Technologies, Inc., possessed a new solid-state rate gyroscope technology that
had not yet matured or captured a significant market share. Even though some
success had been achieved in defense missile applications, a strategy was
clearly needed to further develop the technology and lay the foundation for
future growth...
#Automotive engineering #Missiles #Gyroscopes #Application software #Aircraft #Stability #Control systems #Manufacturing #Production #USA Councils
Electrically controlled metal oxide gas sensor designed with PROSA-CHEM
Tập 1 - Trang 356-360 vol.1 - 2002
In this paper, an electrically controlled metal oxide gas sensor designed with
PROSA-CHEM is introduced, specified and realized. The simulator PROSA-CHEM is
explained and its function is verified by using realistic sensor data. On the
practical side, a first device was fabricated and first measurements were done
and compared with the simulation. It is found that the gas sensitivity and
selectivity...
#Gas detectors #Electrons #Grain boundaries #Crystalline materials #Tin #Temperature dependence #Effective mass #Tensile stress #Conductivity #Voltage
Adaptive reduction of motion artifact from photoplethysmographic recordings using a variable step-size LMS filter
Tập 2 - Trang 1343-1346 vol.2
Photoplethysmography (PPG) is widely used for the continuous monitoring of
peripheral circulation. However, the quality of the PPG signal is degraded
drastically by motion artifact caused during dynamic recordings. In this paper,
a LMS filter with automatic step-size control is proposed to mitigate the
effects of motion artifact in PPG recordings for long-term patient monitoring.
Experimental resu...
#Optoelectronic and photonic sensors #Fingers #Motion detection #Adaptive filters #Least squares approximation #Probes #Light emitting diodes #Phototransistors #Transversal filters #Convergence
A microfabrication strategy for cylindrical ion trap mass spectrometer arrays
Tập 1 - Trang 651-655 vol.1
This paper presents a microfabrication process for the realization of miniature
cylindrical ion trap mass spectrometers, based on silicon MEMS technologies. In
order to create these traps, several techniques are presented. Porous silicon
etching technique resulting in vertical holes has been used to fabricate
end-plates. The ring electrode (hole diameter 1.5 mm) has been fabricated using
ultrasoni...
#Mass spectroscopy #Electrodes #Bonding #Silicon #Etching #Micromechanical devices #Fabrication #Doping #Dielectrics and electrical insulation #Voltage
Analogic fiber optic position sensor with nanometric resolution
Tập 2 - Trang 926-930 vol.2
This paper describes a miniature analogic position sensor. This sensor is
dedicated to high resolution displacement measurement (10 nm) between two
positions over a long range (a few millimeters). The working principle of the
sensor is presented as well as experimental results.
#Optical fibers #Optical fiber sensors #Sensor phenomena and characterization #Optical sensors #Mirrors #Size measurement #Optical interferometry #Displacement measurement #Capacitive sensors #Position measurement