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
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
Các giao diện sóng lỏng được vi chế tạo cho hệ thống vi phân tích Dịch bởi AI
Tập 1 - Trang 660-664 vol.1
Bài báo báo cáo về việc vi chế tạo các giao diện sóng lõi lỏng (LCW) sử dụng
Teflon/sup /spl reg// AF để tích hợp vào các hệ thống phân tích vi tổng hợp.
Teflon/sup /spl reg// AF có chỉ số khúc xạ thấp hơn nước. Các kênh vi hình thẳng
(/spl les/500 /spl mu/m chiều rộng, /spl les/100 /spl mu/m chiều sâu) được khắc
vào một wafer Pyrex đã được phủ Teflon AF và được niêm phong bằng một wafer đỉnh
phủ ...
#Optical waveguides #Spectroscopy #Optical refraction #Absorption #Liquid waveguides #Fluorescence #Optical reflection #Biomedical optical imaging #Optical pumping #Optical sensors
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
Miniaturized linear magnetic position sensors for automotive applications
Tập 2 - Trang 1565-1570 vol.2
In this work, a linear position sensor with a Hall effect element for automotive
applications is presented The work involves the design of device structure,
finite element analysis (FEA) computer modeling of sensor performance,
fabrication of sensor prototype, and prototype characterization. The
significance of the work is that a low cost linear position sensor has been
developed with high lineari...
#Magnetic sensors #Automotive applications #Sensor phenomena and characterization #Prototypes #Sensor systems #Hall effect #Finite element methods #Magnetic analysis #Performance analysis #Fabrication
Fiber optic sensing of tissue pH to assess low blood flow states
Tập 1 - Trang 266-269 vol.1
Tissue pH is a regional measure of anaerobic metabolism and low blood flow state
that can be measured using near infrared (NIR) spectroscopy (700 - 1100 nm). NIR
light passes through the skin to probe muscle and tissue at depths of 5 - 10 mm.
We have used a fiber optic probe to collect light both through skin and directly
from internal organs during surgical procedures, to investigate the measurem...
#Optical fibers #Blood flow #Fluid flow measurement #Skin #Probes #Optical saturation #Optical sensors #Biochemistry #Infrared spectra #Spectroscopy
OMNIVIEWS: direct omnidirectional imaging based on a retina-like sensor
Tập 1 - Trang 27-30 vol.1
Traditionally the acquisition of real time panoramic images has been performed
by the usage of lenses or mirrors coupled with standard image sensors, which
give distorted images. In this paper we will present a system composed of a
mirror and a log polar sensor, which is able to provide directly understandable
images.
#Image sensors #Cameras #Mirrors #Lenses #Optical distortion #Surveillance #Intelligent sensors #Navigation #Optical sensors #Hardware
The investigation of an integrated gas sensor array
Tập 1 - Trang 343 vol.1
A micro integrated gas sensor array has been designed and fabricated with
surface micro-machining technology. The sensor array consists of four elements
integrated on a chip. Two different kinds of SnO/sub 2/ film were sputtered on
the four sensors. Au and Pt were deposited on the surface of SnO/sub 2/ film as
catalysts. The four sensors can be independently controlled by separate heater
and tempe...
#Sensor arrays #Gas detectors #Temperature sensors #Artificial neural networks #Gases #Thermal sensors #Electronic noses #Urban pollution #Sensor phenomena and characterization #Microelectronics