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Cell Phone with Sensor

ICS 280

1/10/2005

Kyoungwoo Lee

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Contents

Cellular PhoneArchitectureBREWPower Consumption

Cellular Phone with SensorsSensorRoles of Cellular Phone

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Mobile Handset

Cellular Phone => Convergent Mobile Device

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Cellular Phone

Key Features of Motorola V710 MSM6100 chipset with

ARM926EJ-S up to 150 MHz 1.2 Megapixel Camera w/ Zoom MP4 Video Capture & Playback Integrated MP3 Player Bluetooth BREW 2.1 MMS (Multimedia Messaging

Service) TransFlash Memory Expansion

Slot up to 128 MB

Sensor Mobile Phone Observation

Hardware Specification

Sensing Unit/

Processing Unit(1s MHz)/ Memory(10s KB)/ Transceiver/

Power Unit

External Interface (Serial & Camera) / CPU (100s MHz)/ Memory (10s MB) / Display & Keypad / Transceiver/ Battery

More Powerful Processing Unit and Terminal

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QUALCOMM Chipset Solution

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BREW

Binary Runtime Environment for Wireless End-to-end solution for :

Wireless application development Device configuration Application distribution Billing & Payment

BREW includes : BREW SDK for application developers BREW client software & porting tools for device

manufacturers BDS(BREW Distribution System) for operator

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BREW Device Architecture

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Power Consumption

# Type Description

1 IDLE_Nothing Nothing and Light is OFF

2 IDLE_Light Nothing but Light is ON

3 IDLE_Browsing No application but browsing some menus

4 ACT_VideoCapture Capturing Video

5 ACT_VideoPlay Playing Video

6 ACT_Talk Talking via phone

Power Measurement Power Consumption

• 3 hours talking and 165 hours standby with 750 mAh battery

Application level power measurement

• Idle• Video Application• Talking

Define each status

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Experimental ResultsAverage Energy(Joule)

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Jou

les

Average Energy(Joule)

Average Energy(Joule) 0.78946 4.22884 5.92894 10.3322 9.28712 13.89569

1 2 3 4 5 6

1: IDLE_Nothing2: IDLE_Light3: IDLE_Browsing4: ACT_VideoCapture5: ACT_VideoPlay6: ACT_Talk

•Output Video File170~180 KBMP415 Seconds ~96kbps

Energy Overhead on Video Application(50~60%) and Backlight(81%)

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Contents

Cellular PhoneArchitectureBREWPower Consumption

Cellular Phone with SensorsSensorRoles of Cellular Phone

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Sensor What it senses

Home Monitoring Health Monitoring Environment

Monitoring Habitat Monitoring Earthquake Monitoring Battlefield MonitoringSensors exist

everywhereMonitoring of physical

world & its phenomena Additional Features

Data Processing Communication within Low-Power

Constraints

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Cellular Phone Main Function

Mobile Phone to connect people

Additional Features Message Service Camera and Camcorder Multimedia Playback with powerful computing

and infrastructure-based network

Battery-operated Roles for Sensors

A. A bunch of sensor nodesB. A central node or a

proxy server for sensor network

C. A terminal to human for sensing data

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A. Cell Phone as a Sensor To collect, to process, and to distribute data around

people1. Home Care

scan environmental data and forward it to care center

e.g.) check the gas leakage or poisonous material

2. Health Care sense user’s health status and update/keep it. e.g.) keep the heart rate or blood sugar rate for

diabetics 3. Emergency Care

catch the emergent situation around people and scan/send data

e.g.) send rescue calls and captured data like picture

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A-2. Health Care

People want to check their health simply

LG KP8400 : Diabetics Phone Blood Sugar Testing Phone

1) place a strip of testing paper located near battery

2) place a drop of blood on the end of the strip

3) get a reading from the phone4) upload to an online database

for later retrieval

Mobile Handset provides tools to check our health status and to keep or accumulate it

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A-2. Health Care (cont’)

What else for heath care? Very basic but important

health care services NONIN Onyx 9500 :

Digital Finger Pulse Oximeter

• Read data over fingertip• Real-time information on

Heart-Rate and Blood Oxygen Saturation Level

Simple devices for health care can be converged into mobile phones to check the health by user

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A-3. Emergency Care

Cellular phone carries rescue button call for safe

Curitel PG-L5000 – SOS Phone Emergency Button Call

1) Call at three saved numbers

2) Take two pictures and send them

3) Inform others of the position using GPS

Mobile Handset senses emergent data

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B. Cell Phone as a Proxy

To use computing power and communication ability of cell phones for sensor network like a Proxy or a central node

Offloading technology CPU:1s MHz in Sensor VS

100s MHz in Cell Phone e.g.) sensor captures

images and cell phone encodes/encrypts them and transmits them.

Sensor Network

Cellular Network

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C. Cell Phone as a Terminal

A terminal to human for sensing data User can get information

from sensor network immediately after requesting

An interface to human for information User can collect

preferred data through cellular phone

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C–1. Security

Cellular phone scans user’s fingerprint

LG LP-3800 with Fingerprint Scanner

- AuthenTech sensor for fingerprint recognition

- Locked for unwanted user to use the phone

Mobile Handset recognizes unique data for personal security

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C-2. Code Interface

Colorzip.com : "ColorCode" - an interface connecting you to online contents

1) Media provides ColorCode

2) User camera on phone recognizes it

3) Server provides contents to client

4) User enjoys the contents Mobile Handset provides an

interface like camera to read and process data

1 2

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Wrap-up

Cellular Network might be a huge-covering and very potential Sensor Network.

More Friendly and Closer to Human Being

Mobile Handset has an interface for sensing data and functionalities of computing and communication

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References

[BREW2004Conf] http://brew.qualcomm.com/brew/brew_2004/ [BREW] http://brew.qualcomm.com/brew/en/ [Healthpia] www.healthpia.com [Diabetic] http://www.mobileburn.com/news.jsp?Id=896&source=SIDEBAR [SOS] http://www.curitel.com/html/product/lineup/feature.asp?serial_no=50 [FingerPrint] http://www.3g.co.uk/PR/Sept2004/8318.htm [Nonin] http://www.nonin.com/products/9500.asp [ColorCode] http://www.colorzip.com [Howard] Andrew Howard, Maja J Matari´c, and Gaurav S Sukhatme, “Mobile

Sensor Network Deployment using Potential Fields: A Distributed, Scalable Solution to the Area Coverage Problem” the 6th International Symposium on Distributed Autonomous Robotics Systems (DARS02)

[AdHoc] http://www.acticom.de/fileadmin/data/publications/WWRF9_White_Slides.pdf

[Joseph] Anthony Joseph, B.R. Badrinath, and Randy Katz, "A Case for Services over Cascaded Networks", First ACM/IEEE International Conference on Wireless and Mobile Multimedia (WoWMoM'98), October 30, 1998.

[Rutgers] http://www.research.rutgers.edu/~mini/sensornetworks.html [CENS] http://www.cens.ucla.edu [Crossbow] http://www.xbow.com/