Nao Logger fingerprinting guide

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How to collect data to create Fingerprint-
Positioning database?

2
7/2/2015
You are halfway to setting up the Fingerprint-Positioning database for your site.
Venue modeling done. Data collection to do.

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7/2/2015
The aim is to create a positioning database (PDB)
from the collected sensory data of the whole venue.
e.g : Wi-Fi

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7/2/2015
For positioning on Android,
existing Wi-Fi infrastructure can be used

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7/2/2015
To collect measurements,
you’ll walk everywhere in the building
twice (forth, back, forth, back)
with our setup mobile app running on your smartphone

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7/2/2015
The app displays the floor plans.
While walking, every once in a while,
place a waypoint at your current location on the floor plans.
The system will associate the sensory data collected along the way
with your locations and will generate a Positioning Database.

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7/2/2015
A: When you…
Q: So when exactly do I have to place a waypoint
at my current location on the floor plans?
stop
walking
change
direction
are at a path
Intersection

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7/2/2015
A: While still walking…
Q: And How?
2. Press the marker button
1. Drag to put the green dot
on your current position
Here, I have walked all the dark green paths
left the blue part to cover.

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7/2/2015
Our setup mobile app is called NAO Logger,
available on Google Play

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7/2/2015
1. Authenticate yourself and
set the Server URL to ALE 2. Select your venue 3. Let it download itself0. Install then launch
NAO Logger
Then we arrive at the main screen…

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7/2/2015
Number of
Wi-Fi beacons detected
Start or stop collecting data
Downstairs maps
Level number
Synchronize data
with server
For data collection
For positioning testing
Path left to walk
Path already
walked

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7/2/2015
Now press Start

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7/2/2015
The Start button
changed to Stop
The Marker button
appeared
The green dot should be
your current location
when you press the
Marker button

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7/2/2015
Now, imagine right now your are at A
and you want to collect data
from A to B

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7/2/2015
2 markers now
1. Press Marker button to tell you are at A
2. Start walking toward B
3. While walking, drag the maps so that
the green dot glides to B
4. When you arrive at B,
press Marker a second time
and continue walking toward another point
Note:
no need to stop when pressing
Marker button
A
B

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7/2/2015
The blue path is walked one way (A to B)
If you now collect data from B to A,
the blue path will be entirely covered in green
A
B

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7/2/2015
Continue collecting data until
all blue paths turn green.
Then press the Stop button
to save the data
Note:
You can use Stop / restart whenever
you want to take a break.

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7/2/2015
Do not forgot to collect data on floor transitions
(stairs, escalators, elevators, etc)
A
B
1. Press Marker at A
2. Take the stairs or escalators
3. Press Downstairs button
4. Press Marker at B

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7/2/2015
Once all the walkable paths are green,
press Synchronize to send
collected data to the server.

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7/2/2015
Switch to the Demo Mode in the application,
let the system download the Positioning Database.
You are now located
by the app using but this is based on
sensors on the phone and not
ALE generated locations.
the blue dot shows your location

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7/2/2015
Now publish the Positioning database from Nao Cloud
and ALE is ready to use it in calibration mode!

Nao Logger fingerprinting guide

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