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
Silicon carbide for MEMS and NEMS - an overview
Tập 2 - Trang 1109-1114 vol.2
Silicon carbide has long been known for its excellent mechanical, electrical and
chemical properties, making it a leading material for microfabricated sensors
and actuators designed for environments too harsh for Si-based devices. However
many of the properties that make SiC attractive for harsh environment
applications make it a challenging material to micromachine. Recent advances in
deposition ...
#Silicon carbide #Micromechanical devices #Nanoelectromechanical systems #Chemical sensors #Fabrication #Mechanical factors #Mechanical sensors #Actuators #Chemical technology #Nanoscale devices
Smart silicon sensors - examples of Hall-effect sensors
Tập 2 - Trang 1440-1444 vol.2
In this paper, we discuss some of the trends in the industrial designs of smart
sensor systems. High-performance sensor systems have been implemented by
combining the sensing and signal processing functions on the same chip. Some
applications of magnetic field measurements are discussed.
#Silicon #Intelligent sensors #Hall effect devices #Magnetic sensors #Magnetic field measurement #Temperature sensors #Sensor systems #CMOS technology #Magnetic separation #Microcontrollers
Preprocessing of electronic nose data by independent component analysis
Tập 2 - Trang 1339-1342 vol.2
Arrays of chemical sensors are affected by different disturbances. They are due,
in part to the environment and in part to the non-ideality of the system. Since
sensors cannot be completely insulated from the surrounding environment the
fluctuation of ambient parameters (e.g. temperature and relative humidity) may
be so large to strongly limit the resolution of the sensor array. In this work,
Inde...
#Electronic noses #Independent component analysis #Temperature sensors #Chemical sensors #Sensor arrays #Sensor phenomena and characterization #Insulation #Fluctuations #Humidity measurement #Solids
Dynamically reconfigurable vision with high performance CMOS active pixel sensors (APS)
Tập 1 - Trang 21-26 vol.1
A high-performance computational imager based on integration of CMOS active
pixel imager array with on-chip signal processing and control via a new
column-parallel architecture is presented. Unlike CCDs and other CMOS imagers,
the sensor is capable of providing simultaneous image data from three flexible,
partially overlapping, dynamically reconfigurable regions of interest (ROIs)
with different s...
#CMOS image sensors #Pixel #Intelligent sensors #Target tracking #CMOS process #Array signal processing #Process control #Computer architecture #Spatial resolution #Power dissipation
A large area force sensor for smart skin applications
Tập 2 - Trang 1620-1624 vol.2
This paper presents the construction and theory of operation of a large area,
flexible, tactile sensor and its applications. The sensing mechanism is based on
the novel contact piezoresistive effect. Furthermore, the sensor's resolution,
size and shape can be easily tailored to the applications' requirements. This
versatility facilitates the use of the sensor in smart applications where
tactile in...
#Force sensors #Skin #Rough surfaces #Surface roughness #Conductivity #Surface resistance #Piezoresistance #Switches #Contact resistance #Linearity
High performance photodetector for modulated lighting - high sensitivity, high selectivity, high suppression of background, and wide dynamic range
Tập 2 - Trang 1456-1461 vol.2
A new sensing scheme for high-sensitivity and wide-dynamic-range position
detection is presented. A correlation circuit and a current-mode suppression
circuit of a constant illumination allow high sensitivity, high selectivity, and
high suppression of a background illumination. A logarithmic-response circuit is
employed to avoid saturation for wide dynamic range. The photodetector can
quickly dete...
#Circuits #Lighting #Dynamic range #Detectors #Optical modulation #Humans #Eyes #Legged locomotion #Filters #Laser beams
A SOI CMOS Hall effect sensor architecture for high temperature applications (up to 300/spl deg/C)
Tập 2 - Trang 1401-1406 vol.2
The design of a 5 V fully integrated magnetic sensor able to operate up to
270/spl deg/C is presented. Fabricated in a Partially Depleted (PD) 1 /spl mu/m
SOI process, this monolithic sensor comprises a resistive Hall plate, an
amplifier stage and an A/D converter delivering a temperature stabilized 8-bit
digital readout of the magnetic field. This circuit uses analog techniques for
continuous com...
#Hall effect devices #Temperature sensors #Magnetic sensors #Doping #Magnetic field measurement #Low-frequency noise #Voltage #Geometry #Thin film sensors #Switches
Active structural error suppression in MEMS vibratory gyroscopes
Tập 2 - Trang 1089-1094 vol.2
Due to restrictive tolerancing, structural imperfections that reduce the
performance of fabricated micro devices are typical. While feedback control is
normally used to compensate for these imperfections, we show that this is
insufficient for suppressing errors without interfering with device performance.
The only alternatives are costly and time consuming post processing or the
implementation of ...
#Micromechanical devices #Gyroscopes #Feedback control #Electrodes #Electrostatics #Aerospace engineering #Error correction #Force control #Actuators #Optical device fabrication