
the topic my presentation is the design of a rip current warning system a rip
of a rip current warning system a rip
of a rip current warning system a rip current is a fast flowing body of water
current is a fast flowing body of water
current is a fast flowing body of water that travels away from the shore through
that travels away from the shore through
that travels away from the shore through the surf zone that means that any
the surf zone that means that any
the surf zone that means that any swimmer entering the water may find
swimmer entering the water may find
swimmer entering the water may find themselves being swept out to sea and
themselves being swept out to sea and
themselves being swept out to sea and dangerously out of their depth causing
dangerously out of their depth causing
dangerously out of their depth causing them to potentially panic struggle and
them to potentially panic struggle and
them to potentially panic struggle and possibly drown this slide shows a photo
possibly drown this slide shows a photo
possibly drown this slide shows a photo of coffs harbor you can see the calm
of coffs harbor you can see the calm
of coffs harbor you can see the calm water which may look inviting summers
water which may look inviting summers
water which may look inviting summers however the calm water is a rip so far
however the calm water is a rip so far
however the calm water is a rip so far in this presentation hang a second surf
in this presentation hang a second surf
in this presentation hang a second surf lifesaving states that two out of three
lifesaving states that two out of three
lifesaving states that two out of three people mistakenly think they can
people mistakenly think they can
people mistakenly think they can identifier it now ladies and gentlemen
identifier it now ladies and gentlemen
identifier it now ladies and gentlemen let me now present you a possible
let me now present you a possible
let me now present you a possible solution I considered the following for
solution I considered the following for
solution I considered the following for my design the system must have reliable
my design the system must have reliable
my design the system must have reliable operation a long system life must be
operation a long system life must be
operation a long system life must be environmentally friendly to humans
environmentally friendly to humans
environmentally friendly to humans animals and plants and it must have a
animals and plants and it must have a
animals and plants and it must have a simple design installation repair and
simple design installation repair and
simple design installation repair and replacement the basic components of the
replacement the basic components of the
replacement the basic components of the system are a flotation device or boi PV
system are a flotation device or boi PV
system are a flotation device or boi PV cells a battery a digital controller
a coiled elasticated has a coiled
a coiled elasticated has a coiled control cable an elasticated cable and
control cable an elasticated cable and
control cable an elasticated cable and an ankle secure fixing the flotation
an ankle secure fixing the flotation
an ankle secure fixing the flotation device oh boy
device oh boy
device oh boy floats on top of the water the PV cells
floats on top of the water the PV cells
floats on top of the water the PV cells convert solar energy into electricity
convert solar energy into electricity
convert solar energy into electricity the battery stores the electricity the
the battery stores the electricity the
the battery stores the electricity the digital controller regulates the amount
digital controller regulates the amount
digital controller regulates the amount of power transmitted through the system
of power transmitted through the system
of power transmitted through the system the control cable the control cable
the control cable the control cable
the control cable the control cable measures the water velocity and the
measures the water velocity and the
measures the water velocity and the electrical and the elasticated cable
electrical and the elasticated cable
electrical and the elasticated cable accommodates the change in water level
accommodates the change in water level
accommodates the change in water level high and low you can see on the slide
high and low you can see on the slide
high and low you can see on the slide the GPS or the status test this allows
the GPS or the status test this allows
the GPS or the status test this allows people to remotely track where the
people to remotely track where the
people to remotely track where the system is and see whether it is working
system is and see whether it is working
system is and see whether it is working properly the control philosophy of the
properly the control philosophy of the
properly the control philosophy of the system is based on the Ohm’s law that B
system is based on the Ohm’s law that B
system is based on the Ohm’s law that B equals I times R V is the battery I is
equals I times R V is the battery I is
equals I times R V is the battery I is the current and R is the cable the
the current and R is the cable the
the current and R is the cable the control cable and its surroundings which
control cable and its surroundings which
control cable and its surroundings which is water the ohms cable is influenced by
is water the ohms cable is influenced by
is water the ohms cable is influenced by water bottie
the total resistance equals cable
the total resistance equals cable resistance
further research is necessary to
further research is necessary to determine the control cable testing or
determine the control cable testing or
determine the control cable testing or the control cable best suited for the
the control cable best suited for the
the control cable best suited for the job this includes length diameter and
job this includes length diameter and
job this includes length diameter and the materials you also need the
the materials you also need the
the materials you also need the controller software and the coding and
controller software and the coding and
controller software and the coding and even the spacing systems as reliability
even the spacing systems as reliability
even the spacing systems as reliability and accuracy may be improved if multiple
and accuracy may be improved if multiple
and accuracy may be improved if multiple systems were linked together in summary
systems were linked together in summary
systems were linked together in summary this presentation has discussed the
this presentation has discussed the
this presentation has discussed the problem of rip currents the design
problem of rip currents the design
problem of rip currents the design considerations for my system the basic
considerations for my system the basic
considerations for my system the basic components and the control philosophy I
will end this presentation with the
will end this presentation with the quotes whose high thing is really
quotes whose high thing is really
quotes whose high thing is really relevant just because it’s just look as
relevant just because it’s just look as
relevant just because it’s just look as it’s difficult it does not mean you
it’s difficult it does not mean you
it’s difficult it does not mean you shouldn’t try thank you this is the end
shouldn’t try thank you this is the end
shouldn’t try thank you this is the end of my presentation
of my presentation
of my presentation [Applause]
”
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