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
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
Organic molecular thin films as gas sensors
Tập 2 - Trang 1144-1147 vol.2
In this paper we will present some interesting data on the gas sensitivity of
very thin films of metal phthalocyanine (as copper phthalocyanine, CuPc) towards
NO/sub 2/ at very low concentration (ppb). A thermal treatment following the
deposition strongly enhances the gas sensitivity. We will relate this high gas
sensitivity to the surface morphology of the film. In fact atomic force
microscopy da...
#Thin film sensors #Gas detectors #Thermal force #Rough surfaces #Surface roughness #Surface morphology #Surface treatment #Atomic force microscopy #Transistors #Copper
Micromachined thermal conductivity hydrogen detector for automotive applications
Tập 2 - Trang 1571-1575 vol.2
In this paper, we describe the design and first experimental results of a
hydrogen detector for automotive applications. The detector is based on a
micromachined thermal conductivity sensor element. The design considerations of
such a sensor element and the associated sensor electronics are also presented.
#Thermal conductivity #Hydrogen #Detectors #Automotive applications #Thermal sensors #Vehicles #Conductivity measurement #Chemical sensors #Temperature sensors #Temperature dependence
Molecularly self-assembled optical fiber sensors
Tập 1 - Trang 198-202 vol.1
Different optical fiber sensors based on the electrostatic self-assembly (ESA)
method will be presented. With this technique it is possible to fabricate
different structures such as nano Fabry Perot interferometers and optical
gratings that may be used either for sensing applications or for the
implementation of other fiber optic devices. The main characteristics of these
molecularly self-assemble...
#Optical fiber sensors #Electrostatic self-assembly #Interferometers #Optical devices #Optical interferometry #Optical sensors #Fiber gratings #Optical fiber devices #Temperature dependence #Costs
Sensing and perception challenges of planetary surface robotics
Tập 2 - Trang 1696-1701 vol.2
This expository paper describes sensing and perception issues facing the space
robotics community concerned with deploying autonomous rovers on other planetary
surfaces. Challenging sensing problems associated with rover surface navigation
and manipulation functions are discussed for which practical solutions from
sensor developers would vastly improve rover capabilities. Some practical
concerns t...
#Robot sensing systems #Intelligent sensors #Orbital robotics #Mobile robots #Sensor phenomena and characterization #Navigation #Hazards #NASA #Mars #Magnetic sensors
Fluxgate can replace SQUID for lung diagnostics
Tập 1 - Trang 321-324 vol.1
In this paper, a design of a magnetic fluxgate gradiometer and its application
for magnetopneumography is described. Metallic dusts and fumes inhaled by
industrial grinders and welders and deposited in their lungs can be magnetized
by an intense DC field and subsequently detected by magnetometry. Traditionally,
SQUIDs are used for such measurements. However, much cheaper fluxgate solution
can brin...
#SQUIDs #Lungs #Saturation magnetization #Magnetic field measurement #Coils #Magnetic sensors #Magnetic cores #Public healthcare #Grinding machines #Welding
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
Identification of organic solvents by a virtual multisensor system with hierarchical classification
Tập 1 - Trang 382-387 vol.1
To improve the selectivity of semiconductor gas sensors temperature modulation
is often used We present a study showing the potential of this technique with
information gained comparable to multisensor systems. A dynamic operating mode
coupled with a low complexity evaluation strategy allows identification of six
organic solvent vapors over a wide concentration range (2 - 200 ppm) with a
single se...
#Solvents #Multisensor systems #Temperature sensors #Sensor systems #Leak detection #Sensor arrays #Temperature control #Electrical resistance measurement #Temperature measurement #Gas detectors