Array of Things: A Fitbit for the City
Released on 10/20/2014
(light music)
We now live with an array of sensors
that we carry on our bodies at all times.
From the accelerometers, gyroscopes and GPSs
in our phoness, to our watches,
to the wearable devices that we carry.
But one of the things we haven't quite seen yet
is an interaction between the sensors that we have
on our bodies, and the sensors
that are in our environments.
And when those two things actually
start talking to each other,
amazing things can happen.
An early project along those lines
that we tracked recently,
was the Array of Things project in Chicago.
[Charlie] The Array of Things project is a network
of sensors and communication and computing devices.
And these devices are placed throughout the city
on street corners, to let us measure
things about the city that don't normally get measured
with that level of resolution.
Temperature, humidity, precipitation, air quality, sound,
or vibration, or light.
Roughly every 15 seconds, each one of these nodes
will report all the sensor data
to multiple repositories on the web.
Open, free of charge, every 15 seconds.
Every node, every sensor, the data goes out.
Imagine that you're walking through the city of Chicago
and you're running an application on your phones.
That application will see one of our nodes,
and it will grab all the data from all the sensors
and store them on your phones.
Now at the end of the week,
you can look at the number of steps you took
but you can also look at
what was my exposure through the week to carbon monoxide?
Or excessive noise?
Or imagine that you're not familiar with the downtown area.
You've parked your car over here,
and you're eight blocks away.
It's 10:00 p.m.
You can then have an application
that guides you through the city,
along the path that has the most pedestrian activity
or maybe the path that's the brightest path.
From a financial point of view,
cities like Chicago spend millions of dollars
on salt for roads and sidewalks.
If you have a hundred or a thousand temperature readings
through the city, you can put the salt where you need it
and not put the salt where you don't need it.
That doesn't just save money,
it means there's less salt that can run into
the Chicago River, or into Lake Michigan.
So it's an environmental benefit as well.
The city of Chicago is home to
some of the world's most beautiful architecture.
And so our first thought of a commercial box
hidden by some artwork, has evolved into
making the enclosure itself
essentially a public work of art.
So we worked with design students at the school of the
Art Institute of Chicago, and what we did is
design the box digitally,
and then from that digital design what we're able to do
is vacuum-form plastic around that form.
Almost all the things that we design are modeled
in a 3D application, so we can understand
all the implications of shape.
From that 3D digital model, we can use toolpath creation
and a CNC machine to cut the original blank
for the thermal forming process.
The final enclosure will be made out of ABS plastic.
This is a kind of material that
we feel really comfortable with,
we have the tools for forming it here.
It's curved to meet the most common radius
of a Chicago city light pole.
[Charlie] The thing that's most exciting to me
about the project is
we're not just deploying a fixed set of technologies,
but we're deploying a capability.
We're opening this to educators, to the public,
to companies, to use the data
and ultimately we can start to envision
applications for sensors that we don't have yet.
[Cliff] When you have sensors in the
environment around you,
lots of amazing possibilities open up.
You can imagine an environment that knows who you are,
what you want, what you need,
and that sounds a little crazy,
but with projects like the Array of Things,
you begin to see exactly how we might get there.
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