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
Task-oriented self-organization of ad hoc sensor systems
Tập 2 - Trang 1485-1490 vol.2
An ad hoc network is a collection of perhaps wireless mobile nodes dynamically
forming a network without the use of any pre-existing network infrastructure or
centralized administration. Resource limitations of sensors deployed in an ad
hoc setting necessitates careful consideration of the choice of sensors. In this
paper, a distributed task-oriented self-organization algorithm for sensors in
such...
#Sensor systems #Sensor phenomena and characterization #Ad hoc networks #Wireless sensor networks #Nominations and elections #Mobile computing #Computer networks #Intelligent networks #USA Councils #Packet radio networks
Remote process monitoring using optical fibre sensors
Tập 2 - Trang 1537-1542 vol.2
Conventional means of curing thermosetting resins used in advanced fibre
reinforced composites involves heating the sample in an oven or autoclave where
heat is transferred to the sample through conduction and convection. This
conventional method for manufacturing composites involves long processing time.
On the other hand, microwave-based processing offers the advantage of a
significantly faster ...
#Remote monitoring #Optical fiber sensors #Electromagnetic heating #Microwave ovens #Probes #Temperature sensors #Curing #Resins #Heat transfer #Optical fibers
Frequency selective sensor arrays for vibration measurement
Tập 1 - Trang 675-679 vol.1
Describes a new microsystem for vibration measurement based on frequency
selective sensor arrays with electrically tunable band selectivity for the
frequency range from 1 to 10 kHz. The band selectivity is achieved by
electrostatic forces.
#Sensor arrays #Vibration measurement #Resonance #Electrostatics #Resonant frequency #Tuning #Sensor phenomena and characterization #Tensile stress #Frequency measurement #Chemical technology
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
Self-energized wireless pressure sensor using energy extraction from injection mold pressure differential
Tập 2 - Trang 942-949 vol.2
With the prolific use of sensors for manufacturing process monitoring and the
growing demand for system integration, the issue of packaging and installation
has assumed an increasingly central role. This paper presents the design of a
self-energized pressure sensor that extracts energy from the pressure
differential of the polymer melt during the injection molding process. A
piezoelectric element ...
#Wireless sensor networks #Polymers #Ultrasonic imaging #Switches #Sensor systems #Manufacturing processes #Monitoring #Packaging #Injection molding #Switching converters
An Internet-based, inverse-GPS system for monitoring and tracking mobile aquatic sensors
Tập 2 - Trang 1734-1739 vol.2
This paper presents a novel, Internet-based system designed for continual
monitoring and tracking of mobile aquatic sensors. A general overview of current
positioning and tracking techniques is presented. The paper then details the two
facets of the proposed system: (1) the sensors and signal processing for
positioning and monitoring; and (2) the Internet-based tracking. The signal
processing syst...
#Internet #Monitoring #Sensor systems #Signal processing algorithms #Databases #Data mining #Face #Hardware #Signal processing #Web pages
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
Comparison of different control loop concepts for direct distance measurement using photonic mixing devices (PMD)
Tập 1 - Trang 151-155 vol.1
This paper presents two different control loop approaches for distance
measurement with photonic mixing devices (PMD). Possible all-analog
implementations are pointed out, and measurements with two different loop types
using our laboratory PMD system are provided. It is shown that the PI control
loop implementation reaches distance accuracy comparable to previous modulation
methods, but on the oth...
#Optical control #Distance measurement #Phase modulation #Control systems #Voltage control #Delay effects #Phase measurement #Time measurement #Phased arrays #Convergence