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1
Cell Phone with Sensor
ICS 280
1/10/2005
Kyoungwoo Lee
2
Contents
Cellular Phone Architecture BREW Power Consumption
Cellular Phone with Sensors Sensor Roles of Cellular Phone
3
Mobile Handset
Cellular Phone => Convergent Mobile Device
4
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
More Powerful Processing Unit and Terminal
External Interface (Serial & Camera) / CPU (100s MHz)/ Memory (10s MB) / Display & Keypad / Transceiver/ Battery
Sensing Unit/
Processing Unit(1s MHz)/ Memory(10s KB)/ Transceiver/
Power Unit
Hardware Specification
ObservationMobile PhoneSensor
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QUALCOMM Chipset Solution
6
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
8
Power Consumption
Talking via phoneACT_Talk6
Playing VideoACT_VideoPlay5
Capturing VideoACT_VideoCapture4
No application but browsing some menus
IDLE_Browsing3
Nothing but Light is ONIDLE_Light2
Nothing and Light is OFFIDLE_Nothing1
DescriptionType# 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)
0
2
4
6
8
10
12
14
16
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%)
10
Contents
Cellular Phone Architecture BREW Power Consumption
Cellular Phone with Sensors Sensor Roles 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
13
A. Cell Phone as a Sensor To collect, to process, and to distribute data around
people2. Home Care
scan environmental data and forward it to care center
e.g.) check the gas leakage or poisonous material
3. Health Care sense user’s health status and update/keep it. e.g.) keep the heart rate or blood sugar rate for
diabetics 4. 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
34
21
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
22
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/