This document presents an open source sensor network framework developed by NTT DATA Italia S.p.A. The framework allows for building sensor networks using Arduino and Raspberry Pi hardware. Sensor data is collected by Arduinos and sent to Raspberry Pis via serial communication using a standard protocol. The data is stored in a MongoDB database and made available via web services. A web interface and mobile apps allow users to interact with and analyze the sensor data. Examples applications mentioned include environmental monitoring, manufacturing, automotive, energy, and healthcare.

1. The information contained in this document is the property of NTT DATA Italia S.p.A. and the addressee of the document. The information is
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Open Sensor Network Framework
Open source full stack Sensor Network Management Solution
Copyright © 2014 NTT DATA Italia SpA CODICE-DATA-P0

2. Open Sensor Network Frameork
IDEA Open Sensor Network Framework
 Building sensor networks with cheap and well known hardware (Arduino,
RaspberryPI)
 A network consist of several nodes, each one managed by a single Rpi
 Each node has one or multiple Arduino station
 Managing the whole network through an extensible open source framework
 Data available through Web Services
 NoSQL DB available for specialist data analysis
 Web interface/Mobile App for user interaction
Copyright © 2014 NTT DATA Italia SpA 1

3. Open Sensor Network Frameork
Architecture Open Sensor Network Frame
Copyright © 2014 NTT DATA Italia SpA 2

4. Open Sensor Network Frameork
Why?
• Many proprietary solutions available
• There isn’t any widely used standard in this field
• Threre isn’t any similar framework running on Arduino/RPI
• Embrace open source community using Arduino/Rpi
• Solution applicable to many application domains
►Environment Management
►Manufacturing
►Automotive
►Energy
►Telco
►Healthcare
Copyright © 2014 NTT DATA Italia SpA 3

5. Open Sensor Network Frameork
Use Case
Streetlights Energy saving
• Distribute several nodes along the street
• Each node can detect passing cars and turn on/off streetlights
• Every node will turn lights on based on the information gathered by the previous one
Copyright © 2014 NTT DATA Italia SpA 4

6. Open Sensor Network Frameork
Key technologies used and lesson learnt
Hardware Layer
► Arduino
• widely used single-board microcontroller
• used for controlling sensors/actuators
• open hardware
► RaspberryPi
• credit card-sized single-board computer
► Data is gathered by Arduino and sent to Rpi via serial port using a standard
protocol
Copyright © 2014 NTT DATA Italia SpA 5

7. Open Sensor Network Frameork
Key technologies used and lesson learnt
Framework
• Python
- High level interpreted language
- Rapid development for serial communication and web service
- Easy framework configuration
• Flask
- Light weight web application framework written in python
- Rapid web service development
Copyright © 2014 NTT DATA Italia SpA 6

8. Open Sensor Network Frameork
Key technologies used and lesson learnt
Data Storage Layer
► NoSQL database MongoDB instance hosted in the cloud on mongolab.com and configured to
efficiently store large time series data.
► The implementation of this layer, for the team was an opportunity to put the hands on a new technology
and gain know how reusable on a lot of different field.
► In fact, today there are many sources of data that represent observations ordered over time. For
example:
• Sensors measure temperature, barometric pressure, humidity and other environmental variables.
• Financial markets generate prices.
• Industrial fleets such as ships, aircraft and trucks produce location, velocity, and operational metrics.
• Status updates on social networks.
• Calls, SMS messages and other signals from mobile devices.
• Systems themselves write information to logs.
Copyright © 2014 NTT DATA Italia SpA 7

9. Open Sensor Network Frameork
Key technologies used and lesson learnt
Front end
• jQuery dashboard
• Query web-service data through Ajax
Copyright © 2014 NTT DATA Italia SpA 8

10. Open Sensor Network Frameork
Future evolutions
Framework enhancements
► Inter-node communication
► Support for more sensors
► Support for wireless communication between node and stations
Analytics Layer
► Innovative technologies like Storm, Mortar or Hadoop can be good choices for
the implementation of the layer for real-time analytics, online machine learning,
continuous computation and more.
Copyright © 2014 NTT DATA Italia SpA 9

11. Open Sensor Network Frameork
Future evolutions
Framework enhancements
► Inter-node communication
► Support for more sensors
► Support for wireless communication between node and stations
Analytics Layer
► Innovative technologies like Storm, Mortar or Hadoop can be good choices for
the implementation of the layer for real-time analytics, online machine learning,
continuous computation and more.
Copyright © 2014 NTT DATA Italia SpA 10

12. Open Sensor Network Frameork
Hardware OSNF
Global Hackathon 13-14 Settembre 2014
Copyright © 2014 NTT DATA Italia SpA 11

13. Open Sensor Network Frameork
Team OSNF
 Vincenzo Pirrone
 Antonio Di Cello
 Alessando Galasso
 Immacolata Conforti
Team OSNF
NTT Data Cosenza
Global Hackathon 13-14 Settembre 2014
Copyright © 2014 NTT DATA Italia SpA 12