smartBike

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smartBikeAn adaptive navigation system for e-bikes

EPSIAE Green ICT

smartBike

Overview

• Big Picture

• Motivation

• System Architecture

• Server

• Client

• Context Framework

• Sensor Technology

• Future Work

smartBike

Big Picture

• Android Navigation App for E-Bikes

• Personal routing

– Age

– Weight

– Fitnesslevel, …

• Adaptive routing

– Current batterylevel has an influence on the routing algorithm

– Redirection over nearby charging stations

smartBike

Motivation

• Increase cruising reach

• CO2 awareness

– Show the users how many CO2 they have saved

– Create footprints, graphs

• Motivate people to go by bicycle

smartBike

System architecture

smartBike

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smartBikeAn adaptive navigation system for e-bikes

Routing Server

smartBike

Server

• PostgreSQL-Database

• ASP.NET Webservice

– Communication via SOAP - XML

ASP.NET Webservice

NpgSQL

SOAP

PostgreSQL DB

smartBike

Why PostgreSQL?

• Open Source DBMS

• PostGIS

– Geospatial querys on a object-relational database

– PostgreSQL-Server as a backend GIS

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pgRouting

• Open Source Routing Library

• Adds routing functionalities to an exisiting PostGIS/PostgreSQL database

– Calculation of shortest paths (Dijkstra, A*)

– Travelling Salesman Problem (TSP)

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OSM-Import

• Osm2po

– Java-based command line tool

– Produces routable SQL files

– Integrated web tool

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Route calculation

• Client requests a new route with a list of GPS-Coordinates (lat/lon) and

an unique user id

• Server mapps coordinates on valid positions

• Calculation of the euclidean distance between the positions

• Nearest-Neighbour-Heuristic is used to find the cheapest connection of all locations

• Route is stored to the database and transmitted to the user

smartBike

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smartBikeAn adaptive navigation system for e-bikes

Android App (Client)

smartBike

Client

• Android App

• Navigation mode

• Communicates with the server via SOAP

• Context Framework provides sensor values (pressure, energy, heading…)

• Shows nearby charging stations

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Client Librarys

• mapsforge

– Mapview

– Offline Maps

– OpenStreetMap Mapmaterial

• kSoap

– RPC for Client Server Communication

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Functions

• Map

– Fully offline mode

– Vector maps, use less space

• Navigation

– User types in there start / endposition

– Server calculates cheapest route

– Client presents the route

– Shows sensorvalues from the arduino

smartBike

Client Design

smartBike

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smartBikeAn adaptive navigation system for e-bikes

Android Context Framework

smartBike

Context Awareness

• Context

– is any information that can be used to characterize the situation of an entity. An

entity is a person, place, or object that is considered relevant to the interaction

between a user and an application, including the user and applications themselves.[Anind K. Dey and Gregory D. Abowd]

– Location, Time, Movement, Volumne …

• Context is calculated from sensor values

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Android Context Service

• interface to offer context information to applications

Application 1

Context Service

… Application N

Context Aggregators

Hardware Sensors

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Implementation

• Hardware Sensors

– On Android device and Arduino board

• Context Aggregators

– Combine the output of sensors and context aggregators

– Offer context information

Hardware Sensors

GPS

Context Aggregators

Running

Acc Lightsensor

Driving Moving

…

…

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Architecture

• Framework

– Context Aggregator:

• Input

– Calibration or filters

• Output

– Context is published

– New Context Aggregators can be implemented and

used by interested applications

• Combined to get better and better context information

Moving

Input

Output

AccGPS

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Tasks

• Processes the raw Arduino sensor values

– Altitude changes

– Distance

– Velocity

– Compass

• Offers context information to Green Route Android Application

– To adapt the route according to the new context

– Show information to user

smartBike

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smartBikeAn adaptive navigation system for e-bikes

Sensor Technology

smartBike

Sensor System

• Aim: designing and developing a prototype of a µC-based Sensorsystem

including all relevant sensors for an E-bike Navigation Application

• Calculate all Sensor-Data periodically

• Wireless Transmission of the data to an Android-device

• Android Service as a receiver of the sensor-data

• -> Possibility to save energy with an alternate calculation of the position by

turning off the GPS-receiver partly

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Architecture

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Amarino

• Android meets Arduino

• Toolkit (Android-Lib + Arduino-Lib) to ease the BT-Communication between

Android-Devices and Arduino µC Boards

• It includes a simple frame based communication protocol

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HW-Prototyp – Circuit Layout

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Prototyp

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Summary

• Adaptive navigation system for E-bikes

• Trying to convince people to go by bike

• Using sensors to gather context information and present it to user

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Future Work

• Improve Adaptive Routing

– Taking personal data into account

• Apply navigation functionality

• Calculation of CO2 footprint

• Visualization of following statistics

– Calorie consumption

– Altitude, elevation, speed

smartBike

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smartBikeAn adaptive navigation system for e-bikes

Thanks for your attention!