ProgrammingTheRealWorld

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Programming the Real-world

Introduction to SPOT

Peng Deng

CSSE University of MelbourneLabSUM


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Agenda Introduction

Evolution of Computing

WSN

Sun SPOT What is SPOT Hardware and Software Applications

My Projects Game Panel Virtual Controller

Gesture Recognition

Simple Tutorial

Conclusion


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Evolution of Computing

1

1960s: Mainframe Era

One computer per many users.

2

1980s: Personal Computer Era

One computer per user.

[1]


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Evolution of Computing [cont.]

2

1980s: Personal Computer Era

One computer per user.

3

2000s: Mobility Era

Several computers per user.


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2000s: Mobility Era


What comes

NEXT?


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2000s: Mobility Era


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2020 and beyond: Ubiquity Era

Thousands of computers per user.


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Ubiquitous Computing Or pervasive computing, ambient intelligence, everyware, physical

computing, the Internet of Things, haptic computing

Characteristics embedded

context aware personalized

adaptive

anticipatory

Wireless Sensor Network is one candidate

[2][3][4]


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Wireless Sensor Network Small-scale sensor nodes

Wireless communication

Large scale of deployment Unattended operation

Environmental monitoring

Security

Defence

Bioinformatics and health

Transportation management

Chemical detection and emergency response

[5][6]


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The Timeline of WSN

Microsoft: Smart Personal Objects TechnologySun: Small Programmable Object Technology


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What is Sun SPOT Embedded Development Platform Flexible hardware and software

Easy to program Java top to bottom

User programs the device entirely in Java

Using standard Java tools

Connected Wireless Communication

Mesh networking

Over the Air Programming

Mobile

Built in battery charged through USB

Aware and Active Able to sense and affect surroundings

Secure

Built-in asymmetric cryptography

Open Source Software -- Hardware

[7][8]


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Sun SPOT HardwareAntenna

2.4 GHz IEEE802.15.4 Radio

Module

180 MHz 32 bit

ARM920T core512K RAM4M Flash

Daughter boardconnector

Power switch

USB interface

withmini-B connector

[7][8]


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Sun SPOT Hardware [cont.]8 3-colors LEDs Switches

Light sensor 3-D

Accelerometer

Analog in 4-5

Replicated switches "High" current outputsDigital I/O

Digital I/O 0-3 Analog inputs

Temperaturesensor and

A/D converter


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Sun SPOT Software Squawk Virtual Machine

J2ME CLDC 1.1 (cellphone without display)

Runs on bare metal (No OS)

Designed for memory constrained devices

Runs multiple applications (concurrently)

IDE Supported NetBeans, Eclipse, any IDE you familiar with

[9]


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Applications[7]


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ApplicationsAutonomous Deployment [7]


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ApplicationsRobot [7]

Video: http://www.youtube.com/watch?v=aJRp6h9SXNo


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ApplicationsSwarms

Autonomous Light Air VesselsCell phone vibration motor to propel

Roam around to find friend or seek food

Spinning together

Feed them

Video: http://www.youtube.com/watch?v=uMdACfIMoEY

[11]


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ApplicationsMikes Flying Bike

Flying and Exercise!

Sun SPOT + Google Earth Flight Simulator

Video: http://www.youtube.com/watch?v=k3QK1eu3q3E

[12]


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ApplicationsSPOTkin

Sun SPOT + Pumpkin?

Video: http://www.youtube.com/watch?v=08S_89T-LFo


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My ProjectsGame Panel

Sun SPOT + Never Ball

Video: http://www.youtube.com/watch?v=4-1yBd5gbzU


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My ProjectsVirtual Earth Controller

Sun SPOT + NASA World Wind

The earth is on your palm

Video: http://www.youtube.com/watch?v=ICEygWw80V0


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My ProjectsGesture Recognition

Facts:

1.Multi-attributes; 2. Data stream

Challenges:1.Recognition; 2. Segmentation

Solutions:

1.Machine Learning; 2. Threshold+std dev

Accuracy: 17% ~ 97%


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Simple TutorialGet Data From Sun SPOT

Sun SPOTSun SPOT

Sun SPOTBase Station

Sun SPOTBase Station

PC(Processing)

PC

(Processing)


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Simple Tutorial [cont.]Get Data From Sun SPOT

Sensor Side App:

private IAccelerometer3D accel = EDemoBoard.getInstance().getAccelerometer();private ITemperatureInput tempSensor = EDemoBoard.getInstance().getADCTemperature();private ILightSensor lightSensor= EDemoBoard.getInstance().getLightSensor();

String msg = String.valueOf(accel.getAccelX())+";"+

String.valueOf(accel.getAccelY())+";"+String.valueOf(accel.getAccelZ())+";"+String.valueOf(tempSensor.getCelsius())+";"+String.valueOf(lightSensor.getValue());

RadiogramConnection conn =(RadiogramConnection)Connector.open("radiogram://0014.4F01.0000.1455:100");Datagram dg = conn.newDatagram(conn.getMaximumLength());dg.writeUTF(msg);conn.send(dg);conn.close();

9 lines of code!


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Simple Tutorial [cont.]Get Data From Sun SPOT

Host Side App:

RadiogramConnection conn = (RadiogramConnection) Connector.open("radiogram://:100");Datagram dg = conn.newDatagram(conn.getMaximumLength());conn.receive(dg);

String rawData = dg.readUTF();

System.out.println(rawData);conn.close();

DONE!

6 lines of code!


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Conclusion Usage

Rapid prototype development

Experiment

Education

Not ready for commercial deployment Lacks support Constraints

Future development Get support from sensor providers like J2ME supported by

mobile phone companies


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Appreciate

Dr. Lars Kulik (http://www.csse.unimelb.edu.au/~lars/)

Dr. Egemen Tanin (http://www.csse.unimelb.edu.au/~egemen/)

All members in SUM Research Lab (http://www.sumlab.net/)


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Peng Deng

Research Assistant

SUM Research Lab

CSSE University of Melbourne

Thank you

August 22, 2008

ProgrammingTheRealWorld

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