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| 2001-2002 Fluids Seminar Page |
Sensor Technology Center, Denmark
Abstract-
Optical methods for fluid diagnostics are well established. Major constraint
for more widespread use is cost, size, fragility, and power consumption. A
typical measuring system can be partitioned into four major parts: (1) light
source, (2) optics, (3) detector(s), and (4) signal processor. Developments
that make it possible to move from delicate measuring systems to robust
sensors are described. Lower limits to size are outlined in relation to
different generic technologies like refractive optics, diffractive optics,
and integrated optics. Specific examples are: a system for the measurement
of milk flow in a very small channel, a system for measuring surface
velocities, and a long range laser anemometer for use in conjunction with
wind turbines. Some concepts for integrated sensors for visco-elastic
measurements are also presented.
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