Application of Cloud Computing in

Physical Activity Research

Terry B J Kuo1,2,3, I-Te Hsieh1,2, Jia-Yi Li1,2, Chun-Yu Chen1, Chun-Ting Lai1, Yu-Cheng Lin1, Cheryl C H Yang1,2,3

1Institute of Brain Science and 2Sleep Research Center, National Yang-Ming University; 3Department of Education and Research, Taipei City Hospital

Accelerometer (G-sensor)

G-sensor & Display

G-sensor & Disk Drive

G-sensor & Game

G-sensor & Exercise

Energy Expenditure (calorie/kg/min) = 35 + 0.14 x G Sensor Counts

Tanaka et al (2007) Obesity

G-sensor & Sleep

W

SWS2

REMS1

XY

Z

Kuo et al (2012) Clin Neurophysiol

G-sensor & Heart

G-sensor

ECG

S1S2

G-sensor & Respiration

G-sensor (Z)

G-sensor (Y)

XY

Z

Respiration

Heart Beat

Biomedical Applications of G-sensor

G-sensor

Posture

Exercise

RespirationHeart

SleepTremor

Others

Biomedical Applications of G-sensor

G-sensor

Posture

Exercise

RespirationHeart

SleepTremor

Others

Requirement

Long-term monitoring of Sleep and Exercise

Solution

Sensor: G-sensor (Accelerometer)

Platform: Cloud-computing Platform

Automatic Cloud Computing Actimeter System

User & Wireless Actimeter

User Interface

Analysis Engines:Linear Analysis

Non-liner AnalysisExercise Analysis

Sleep Analysis

Data Base

RouterWeb

Browser

Automatic Upload

User & Wireless Actimeter

User Interface

Analysis Engines:Linear Analysis

Non-liner AnalysisExercise Analysis

Sleep Analysis

Data Base

RouterWeb

Browser

Automatic Uploading

Specifications

G-sensor1 to 5 mG for sleep, 100 to 1000 mG for exerciseSampling: 12 bit 100 Hz, Range: ± 2G

Automatic Wireless Uploading to InternetUltra low power (ULP) wireless technology

BatteryCoin type: CR2032 (200 mA Hour)

Operation time2 Weeks = 14 Days = 336 Hours

Current Consumption200 mA Hour / 336 Hour = 600 uA

AffordableRetail Price < 300 USD

3-Axis Accelerometer

2.4 GHz

RouterMicro-

controller

Coin Battery

Non-volatile memory

Radio FrequencyTransceiver

Internet Cloud

KY9

Radio FrequencyTransceiver

3-Axis Accelerometer

2.4 GHz

RouterMicro-

controller

Coin Battery

Non-volatile memory

Radio FrequencyTransceiver

Internet Cloud

KY9

Radio FrequencyTransceiver

Block Diagram of KY9 Wireless Actimeter

G-sensor3-Axis

Accelerometer

2.4 GHz

RouterMicro-

controller

Coin Battery

Non-volatile memory

Radio FrequencyTransceiver

Internet Cloud

KY9

Radio FrequencyTransceiver

3-Axis Accelerometer

2.4 GHz

RouterMicro-

controller

Coin Battery

Non-volatile memory

Radio FrequencyTransceiver

Internet Cloud

KY9

Radio FrequencyTransceiver

Provided by Freescale

Micro-controller3-Axis

Accelerometer

2.4 GHz

RouterMicro-

controller

Coin Battery

Non-volatile memory

Radio FrequencyTransceiver

Internet Cloud

KY9

Radio FrequencyTransceiver

3-Axis Accelerometer

2.4 GHz

RouterMicro-

controller

Coin Battery

Non-volatile memory

Radio FrequencyTransceiver

Internet Cloud

KY9

Radio FrequencyTransceiver

Provided by Texas Instrument

Memory3-Axis

Accelerometer

2.4 GHz

RouterMicro-

controller

Coin Battery

Non-volatile memory

Radio FrequencyTransceiver

Internet Cloud

KY9

Radio FrequencyTransceiver

3-Axis Accelerometer

2.4 GHz

RouterMicro-

controller

Coin Battery

Non-volatile memory

Radio FrequencyTransceiver

Internet Cloud

KY9

Radio FrequencyTransceiver

Provided by Ramtron

Radio Frequency

Xenon 2C

Ultra-low-power RF moduleNordic Semiconductor nRF24LE1Power supply: 1.9 to 3.6 VStandby current (UART active): 4 uAWorking current (RF active): 4 mAZero data loss

3-Axis Accelerometer

2.4 GHz

RouterMicro-

controller

Coin Battery

Non-volatile memory

Radio FrequencyTransceiver

Internet Cloud

KY9

Radio FrequencyTransceiver

3-Axis Accelerometer

2.4 GHz

RouterMicro-

controller

Coin Battery

Non-volatile memory

Radio FrequencyTransceiver

Internet Cloud

KY9

Radio FrequencyTransceiver

Provided by K&Y Lab

Circuit Design

Firmware Design

Radio Frequency Transceiver

Accelerometer

MCU

F-RAM Battery

Radio Frequency Transceiver

Accelerometer

MCU

F-RAM Battery

Prototype of KY9 Wireless Actimeter

15 daysOperation Time (Full Function with a CR2032 Coin Battery)

500 µW 600 µW

Power Consumption (ave @ 2 V)RF offRF on

10 metersWireless Transmission Range

1 mWWireless Transmit Power

2.4 GHzRadio Frequency

Ferroelectric Random Access MemoryStorage

Change of Vector MagnitudeOutput

100 Hz, 12 bitsSampling Rate and Resolution

±2 GRange of Sensing

3-Axis Acceleration Sensor

5.0 x 4.0 x 0.8 cm3Size

14 gWeight

15 daysOperation Time (Full Function with a CR2032 Coin Battery)

500 µW 600 µW

Power Consumption (ave @ 2 V)RF offRF on

10 metersWireless Transmission Range

1 mWWireless Transmit Power

2.4 GHzRadio Frequency

Ferroelectric Random Access MemoryStorage

Change of Vector MagnitudeOutput

100 Hz, 12 bitsSampling Rate and Resolution

±2 GRange of Sensing

3-Axis Acceleration Sensor

5.0 x 4.0 x 0.8 cm3Size

14 gWeight

Technical Specification of KY9 Wireless Actimeter

Wireless Router

Xenon Router

Ultra-low-power RFXenon RF protocol2.4 GHz 1mWNordic nRF24LE1 chip

InternetGeneral Packet Radio Service Ethernet

3-Axis Accelerometer

2.4 GHz

RouterMicro-

controller

Coin Battery

Non-volatile memory

Radio FrequencyTransceiver

Internet Cloud

KY9

Radio FrequencyTransceiver

3-Axis Accelerometer

2.4 GHz

RouterMicro-

controller

Coin Battery

Non-volatile memory

Radio FrequencyTransceiver

Internet Cloud

KY9

Radio FrequencyTransceiver

Provided by K&Y Lab

Internet Cloud

10 meter1 mW

Automatic Data Uploading

Data Display with Pad ComputerConnecting to Internet

XenonRouter

Uploading

TemporatoryStorage in F-RAM

Lossless Cloud Recording

X

Continuous and On-line Recording of Physical Activity (PA) in the Cloud Server

Sleep and Exercise Analysis

Sleep

Energy Expenditure (calorie/kg/min) = 35 + 0.14 x PA

Tanaka et al (2007) ObesityKuo et al (2012) Clin Neurophysiol

PA

(mG

)

Cloud-computing Sleep and Exercise Analysis

Service

Cloud-computing Healthcare

Storage

Analysis

Short Message ServiceWalk 1 hour, sleep 8 hour today!

G-sensing

Uploading

A fine integration of sensor technology,

information technology and biomedical

technology may provide useful healthcare

service to peoples especially the elderly.

Acknowledgement

I-Te Hsieh謝一德

Wei-Ting Lin林威廷

Cheng-Han Wu吳承漢

Yen-Pu Lin林彥溥

Chung-You Chen陳重佑

Shun-Ping Lin 林順萍

Chun-Pu Wang王淳莆

Analysis

Exercise & Sleepwith G Sensor

SMS: Walk 1 hour & Sleep 8 hours today!Measure BP

Cloud-Computing Healthcare

SMS: Good Work! Measure BP again