Page 28 - Vol.10

Tech
Notes
技術專文

Figure 11. Robot dog equipped with sensor to facilitates environment monitoring [6]

particle number can be calculated computer for data logging and
from the total current. analysis, which is much more cost
Relevant effective and offer better mobility
I total = I filter + I diffusion to traditional scanning mobility
Commercial [8]
x
q (d) = c · d ..........................................(3) particle sizer (SMPS) .
Applications
in Detecting More recently in 2012, the scientists
Where q : average charge in Europe fitted chemical sensors
d : particle diameter Network and on a robot fish to detect pollutant
c : constant determined from the Miniature Particle in the ocean.The robot fish shown
instrument calibration in figure 13 are designed to swim
x : 1.1 for the charger setup Sensor independently but co-ordinate
with the other robot fish to form
I total = N · q (d p ) · Φ ...........................(4) a network monitorring water
he Feral Robots project quality. Robot fish know how to
Where N : particle number concen- is an open source robotics return to base when their eight –
[5]
tration Tproject in 2005 , providing
Φ : flow rate resources and support for upgrading hour battery life is running low and
to communicate with each other and
the raison d’etre of commercially map where they are .
[7]
This instrument has a limitation available robotic dog toys and
on the d ia meter of ma x i mum equipped the robots with sensors
penetration d MP about 500nmn and figure 11. The robot dogs could follow
the standard calibration setup has concentration gradients of the
a range from 20 to 240 nm by quasi- contaminants and facilitates public
monodisperse NaCl aerosol. participation in environmental Result and
[6]
monitoring and remediation . discussion
The 2009 R&D 100 winner, figure 12,
NASA Mini-Classifier , which is a n the constrained condition of
complete, self-contained differential limited quantity of scanning
mobility analyzer (DMA) that Imobility particle sizer (SMPS)
directly measures the particle size in a vast area, it’s not easy to
distribution of sub-micrometer localize the source of hazardous
particles(<100nm). The device design conta m i nation w ith g rad ient
is based on the theory of unipolar seeking method. Exerting the
field charging and integrated with advantage of scanning mobility

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