SENSORS, 2002 IEEE
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Analogic fiber optic position sensor with nanometric resolution
SENSORS, 2002 IEEE - 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
A gazing point distance detection system for accommodation assisting glasses
SENSORS, 2002 IEEE - Tập 2 - Trang 905-910 vol.2
Proposes a gazing point distance detection system which is one of the important
key issues in order to realize accommodation assisting glasses, automatic
focusing glasses which can assist eye focusing for aged persons who suffer from
presbyopia. The new system has a tunnel type light path device which consists of
very narrow tunnels with the opening of a vertically long rectangle. The tunnels
are ...
#Glass #Lenses #Vision defects #Focusing #Aging #Automatic control #Gravity #Iris #Manufacturing #Position sensitive particle detectors
Sub-micron range thickness measurements using a novel scanning heterodyne optical interferometer
SENSORS, 2002 IEEE - Tập 2 - Trang 1080-1084 vol.2
Introduces a novel and highly accurate method of thickness measurement using a
compact, high performance, scanning heterodyne optical interferometer. The
instrument has the potential to measure thickness at an Angstrom resolution over
a micron continuous thickness range. The instrument uses acousto-optic devices
to implement rapid scanning for thickness measurements of the test medium. As
the read...
#Optical interferometry #Thickness measurement #Optical mixing #Optical beams #Laser beams #High speed optical techniques #Optical refraction #Optical variables control #Instruments #Acoustic testing
Optical fiber sensor using tailored porous sol-gel fiber core
SENSORS, 2002 IEEE - Tập 1 - Trang 71-73 vol.1
Novel techniques for fabricating a porous sol-gel fiber, doping chemical reagent
into the fiber, and constructing an optical fiber chemical sensor using the
porous fiber as a transducer, have been invented. A moisture sensor employing a
CoCl/sub 2/ doped porous sol-gel fiber as a transducer has been constructed as
an example. The test result of the moisture sensor verified a conclusion from
theore...
#Optical fiber sensors #Optical fiber communication #Optical fiber testing #Chemical sensors #Transducers #Moisture #Optical fibers #Light sources #Humidity #Coatings
Thermally activated ageing of polysilicon
SENSORS, 2002 IEEE - Tập 1 - Trang 602-606 vol.1
Thermally induced resistance changes and long term stability of polysilicon
resistors were characterized for temperatures up to 1400 K. For this purpose, a
new test microstructure was developed which is based on a micro hotplate with a
central polysilicon resistor as the material under test and two polysilicon
heaters for temperature cycling of the membrane. This test system allows the
separate me...
#Aging #Thermal resistance #Resistors #Materials testing #Resistance heating #Temperature dependence #Switches #Cooling #Thermal stability #Microstructure
Implantable glucose sensor: progress and problems
SENSORS, 2002 IEEE - Tập 1 - Trang 270-273 vol.1
Although the first implantable glucose sensors were developed a few decades ago,
there is still no glucose sensor that can work reliably and for a long period of
time after implantation. This loss of function in vivo is caused by events that
affect the sensor itself (e.g. degradation, fouling...), as well as by changes
in the tissue surrounding the sensor, caused by the implantation. Therefore, in...
#Sugar #Biosensors #Biomembranes #Biological control systems #In vivo #Electrodes #Biological tissues #Sensor phenomena and characterization #Monitoring #Diabetes
Active structural error suppression in MEMS vibratory gyroscopes
SENSORS, 2002 IEEE - 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
Design and application of the field-bus-based intelligent robot plug and play sensing system
SENSORS, 2002 IEEE - Tập 2 - Trang 1677-1681 vol.2
In this paper, a novel design and application method of intelligent robot
sensing system is presented in this paper. The multi-functional perceptual
system consists of heterogeneous kinds of sensors, such as six-dimensional
force/torque, tactile, vision, etc. Supported by the field-bus-based data
acquisition and transmission technology, all the sensors work in an open
connection environment, namel...
#Intelligent robots #Plugs #Intelligent sensors #Sensor systems #Design methodology #Tactile sensors #Force sensors #Torque #Data acquisition #Hardware
A textile based capacitive pressure sensor
SENSORS, 2002 IEEE - 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
An Internet-based, inverse-GPS system for monitoring and tracking mobile aquatic sensors
SENSORS, 2002 IEEE - 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
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