Upload
others
View
7
Download
0
Embed Size (px)
Citation preview
© 2013 Toshiba Corporation
Personal Smart Healthcare using Body Area Network
April 4, 2014
Hirokazu Tanaka Telecommunications Research Laboratory Toshiba Research Europe, Ltd.
© 2013 Toshiba Corporation 2
1. Wireless Healthcare Overview
2. Toshiba’s Solution to the Wireless Healthcare
Business
3. Body Area Network (BAN) Standardization in ETSI
© 2013 Toshiba Corporation 3
What is Our Goal for Wireless Healthcare?
Safe and health society
connected to advanced medical and
healthcare for 24 hours unconsciously.
Internet
Short Range Wireless
Coordinator
Healthcare
Cloud
© 2013 Toshiba Corporation 4
Use Cases for Wireless Healthcare
6. Lifestyle diseases Measuring amount of activity during exercise and alarming when
overloaded. Collecting necessary vital data.
7. Elderly adults Elderly adults’ location and activity monitoring. Transmitting an alert
signal to their family, in case of emergency. Detect and notify risks of
accidents.
Children’s health monitoring , checking their location and checking
whether they have any accidents. Transmitting an alert signal to their
parents, in case of emergency.
2. Children
1. Infants Careful infants’ health monitoring (e.g. body temperature, pulse,
respiration rate, etc.).
5. Basal body temperature Attaching a patch-type sensors during sleep, measuring basal body
temperature and pulse for checking daily physical conditions or for
fertility treatment.
4. Sports Measuring amount of activity and estimating calories burned up
during sports.
3. Diet Monitoring amount of exercise, and bodily weight in order for checking
energy consumption volume and calorie intake.
In every life stage,
potential demands for
wireless healthcare
applications are rapidly
increasing.
Potential number of
Users are estimated
more than 100 mil.
people.
© 2013 Toshiba Corporation 5
Use Case Example 1: Safety Confirmation Safety Confirmation
Category Healthcare Elderly care
Situations Home Outdoor
Example of Use case
Attaching patch-type sensors on an elderly adult body, an alert signal and his/her pulse data are transmitted to the data server when he/she feels physically sick. These data and signal are also reported to care workers immediately.
Sensors Sampling
rate / quantization
bit rate Communi
cation distance
# of Nodes
Real time/ Non real time
pulse wave or ECG 10-16bit / 64Hz-1kHz
640bps-16kbps up to 1.5m 1 to 12 Real time
Accelerometer (body motion, posture)
10-16bit, 64Hz-1kHz
640bps-16kbps up to 1.5m 1 to 5 Real time
© 2013 Toshiba Corporation 6
Stress Monitoring
Category Healthcare
Situations Home Outdoors Office
Example of Use case
Logging daily physical and emotional stress and use the data for health management.
Sensors Sampling rate / quantization bit rate
Communication
distance
# of Nodes Real time/ Non real time
pulse wave or ECG 10-16bit, 64Hz-1kHz
640bps-16kbps up to 1.5m 1 to 3 Non real time
Use Case Example 2: Stress Monitoring
© 2013 Toshiba Corporation 7
Use Case Example 3: Sleep Monitoring
Sleep Monitoring
Category Healthcare Medical
Situations Home Hospital
Example of Use case
Checking asleep conditions and use the data for people's need for better sleep. The data is utilized for insomnia treatment.
Sensors Sampling rate / quantization bit rate
Communication
distance
# of Nodes Real time/ Non real time
pulse wave or ECG 10-16bit, 64Hz-1kHz
640bps-16kbps up to 1.5m 1 Non real time
Accelerometer (body motion, posture)
10-16bit, 64Hz-1kHz
640bps-16kbps up to 1.5m 1 Non real time
© 2013 Toshiba Corporation 8
Use Case Example 4: Sports Monitoring
Sports Monitoring Category Sports
Situations Outdoors Indoors
Example of Use case
Measuring amount of activity and estimating calories burned up during sports. Checking pitching form and avoid dropping into a bad habit.
Sensors Sampling rate / quantization bit rate
Communication
distance
# of Nodes Real time/ Non real time
pulse wave or ECG 10-16bit, 64Hz-1kHz
640bps-16kbps up to 1.5m 1 to 4 Real time
Accelerator (body motion, posture)
10-16bit, 64Hz-1kHz
640bps-16kbps up to 1.5m 3 to 6 Real time
© 2013 Toshiba Corporation 9
Future Wireless Healthcare Eco-system (AV2E)
眼鏡イヤホン型
時計型
24 hours monitoring of human AV2E information and its record contribute
future medication as well as current and emergency medication.
Audio
Visual
Vital
Environmental
Feedback: medication /Health-Care/Wearable Device
Healthcare
Cloud Server
Data Mining
Medical
Decision
Health Care
Advice
Personal
Health Record
Noisy Sound
Hearing Impairment
Body Internal Sound
Damaging Day Light
Vision Impairment
Even Un-Visual Light Wave
ECG/EEG/Pulse
BodyTemeperature
SPO2 etc……..
Gas Sensor
Smell Sensor
Radiation Sensor
© 2013 Toshiba Corporation 10
Almost all wearing goods could be sensor nodes
眼鏡イヤホン型
時計型
ジョギングパートナー
AV2E Communication between human and health-care cloud server
should be carried out un-consciously .
© 2013 Toshiba Corporation 11
Data rate from wearable sensors*
Brain
Wave
Electical Image/Video Pressure
Variation Acceleration
1kbps
100kbps
1Mbps
ECG
EMG
EOG ENG
Brain
Blood
Stream
Pulse
SPO2
Breath
Pulse Blood
Pressure
Body
Movemen
t
Sound
Sound
0.1kbps
10kbps
Image/Video
Light
Reflection
Group1: 0.1kbps Avg.
Group-2: 1kbps Avg.
Group-3: 10kbps Avg.
Group-4: 100kbps Avg.
Group-5: 1Mbps Avg. Group-6: 10Mbps Avg. Group-7: 100Mbps Avg.
Group-0: 0.01kbps Avg.
Sesor out data rate
Body Temperature
* Depend on application
and /or sensor type
Type of sensors
© 2013 Toshiba Corporation 12
AV2 E Communication System Diagram
Vital Sensor
Data /
Models
Sensor
Data
Coding
Error
Control
& Wireless
Error
Control
& Wireless
Error
Control
& Wireless
Error
Control
& Wireless
Error
Control
& Wireless
Sensor
Data
Decoding
Sensor
Data
Decoding
Video
Data
Decoding
Audio
Data
Decoding
AV2 (Audio Visual & Vital) Wireless Sensor Systems AV2 (Audio Visual & Vital) Sensor Coordinator
BAN
Wireless
Network
Model
with
Interference
Env. Sensor
Data /
Models
Sensor
Data
Coding
Error
Control
& Wireless
・・・・
Audio
Sensor
Data /
Models
Audio
Data
Coding
Error
Control
& Wireless
Visual
Sensor
Data /
Models
Visual
Data
Coding
Error
Control
& Wireless
Evaluation
Video
Audio
Env.
Vital
Video
Audio Vital xN
Video
Audio Vital xN
Error
Protection
Video
Audio Vital xN
Video
Audio
Vital
Vital Transmission
Error Decoding
(Compression
Noise)
Encoding
Quality
Evaluation
From
Medical View Point
Encoding Cost (Power) Transmission
Cost (Power)
Decoding
Cost (Power)
Dynamically
Changing
Dynamically
Changing
・・・・
© 2013 Toshiba Corporation 13
1. Wireless Healthcare Overview
2. Toshiba’s Solution to the Wireless Healthcare
Business
3. Body Area Network (BAN) Standardization in ETSI
© 2013 Toshiba Corporation 14
SilmeeTM Engine and Prototype Small Size Module of Integrated Functions for Wearable Vital Signs Sensor
4 Sensors : ECG (Electrocardiograph), Pulse wave, Acceleration, Body Surface Temperature
Analog Front End (ECG, Pulse) made by Compact Implementation Technology ‘Pseudo-SoC’
Triaxial accelerometer
Thermometer
MCU : ARM Cortex-M3 (Sensor Control and Signal Processing)
Bluetooth (Ver4.0 Dual mode)
Silmee-Egg as Concept Working Model of Patch Type Sensor with in Silmee Engine Putting on Chest for ECG
Rechargeable Button Battery
Bluetooth
MCU
(ARM)
Acc
Temp
LED PD
Silmee Engine
ECG
(AFE)
Pulse
(AFE)
Pulse
Electrode
Electrode
ECG
14.5mm-14.5mm
Silmee Egg
(Concept Model as flagship)
© 2013 Toshiba Corporation 15
Target Applications
Self Care Remote Care Sports Beauty
Diet Healthcare
Childcare/Nursing Care
Home Monitoring
Monitoring of
Basic Vital Signs Trend
ECG
breathing
blood pressure
body temperature
Monitoring for babies and Elderlies
Degree of
Tension
Interest
Surprise
Home Medical Care/Community
Medical Cooperation
Sleep Apnea Syndrome
Morning/Masked Hypertension
Assistance for
“Beautiful “ Walk
“Beautiful” Posture
Notice of Time &
Exercise Load
to Lose Weight
Measurement of
Exercise Stress
Exercise Quantity
Measurement of
Calories
Basal Body Temperature
Autonomic Nerves
Detection and Notification of
Deterioration in Physical Condition
to Distant Family
Motion of Character followed by
vital sings
Medical Entertainment
Game/Contents
© 2013 Toshiba Corporation 16
1. Wireless Healthcare Overview
2. Toshiba’s Solution to the Wireless Healthcare
Business
3. Body Area Network (BAN) Standardization in ETSI
© 2013 Toshiba Corporation 17
Silmee’s Challenges for the Future Steps
Cloud
Server
NFC
LAN
BT
NFC
Net Service
Health care
Cloud Services
Smart BAN
眼鏡イヤホン型
Not only daily life usage,
but also emergency cases
Ultra-Low Power (ULP) Sensor Node Implementation.
Data Compression and ULP Signal Processing.
Data Security & Dependability under required QoS.
Smart BAN should support wide range of data rates and QoS levels. Also, it
should be power-efficient.
Coordinator
1. BAN Coordinator
2. PAN Communicator
3. Signal Processing
© 2013 Toshiba Corporation 18
What is ETSI TC Smart BAN?
TC Smart BAN is a vertical technical committee with
responsibilities for development and maintenance of ETSI
Standards, Specifications, Reports, Guides and other
deliverables to support the development and implementation of
Smart Body Area Network technologies (Wireless BAN, Personal
BAN, Personal Networks etc.)
Target applications include health, wellness, leisure, sport and
other relevant domains.
TC SmartBAN's scope includes communication media, and
associated physical layer, network layer, security, QoS and
lawful intercept, and also provision of generic applications and
services (e.g. web) for standardisation in the area of BAN
technologies.
ETSI/BOARD(13)94_0XX
Use what exists, fill in the gaps, and make it work better.
This is the mission of the new ETSI TC SmartBAN
© 2013 Toshiba Corporation 19
Acting Working Items (TC Smart BAN)
5 Work Items have been created so far:
1. Smart BAN Data representation and transfer, service and application;
Standardized interfaces, APIs and infrastructure for heterogeneity
management (TR)
2. Smart BAN Low Complexity Medium Access Control and Routing
(TS)
3. Smart BAN Measurements and Modelling of Smart BAN RF
environment (TR)
4. Smart Body Area Networks Enhanced Ultra-Low Power Physical
Layer (TS)
5. Smart BAN System Description (TR)
© 2013 Toshiba Corporation 20
ETSI TC Smart BAN
Technical Committee (TC) was officially started in March
2013
So far 3 face to face meetings
–#1 @ ETSI, 28 May 2013
–#2 @ TREL-TRL, 5 Sep 2013
–#3 @ ETSI, 12 Dec 2013
Next face to face meeting in May 2014
Planned to finalize in 2015
2014 Jan Dec Jan Dec Jan Mar
May.28 Sep.05 Dec.12 May 07
2013
TC started
(established )
2015~
Planned
Finalization
© 2013 Toshiba Corporation 21
1. Ultra Low Power Design
HUB/Node Role Sharing
HUB takes care of MAC operation functionality as much as
possible. Node operation is designed to be minimum.
Simple Access Scheme
Minimum power consumption of node.
Support Long Time Sleep Node
Sustainable connection of long-time sleep nodes
Simple Star Network
Technical Requirements for Smart (1)
© 2013 Toshiba Corporation 22
2. Timely Accessible Mechanism
Emergency Signal Transmission
Anytime possible to send.
Smart Connection Setup
Minimizing setup time of multiple number of nodes.
3. Co-existence Robustness
Co-existence between HUBs
Technical Requirements for Smart (2)
© 2013 Toshiba Corporation 23
2-ch Concept
Control Channel (C-ch)
Data Channel (D-ch)
D-ch Frame Structure
Timely Accessible
Mechanism
Co-existence
Robustness
Ultra Low Power
Technical
Requirements Smart BAN Solutions
Solutions in Smart
© 2013 Toshiba Corporation 24
Channel access
Frequency
Spectrum band: ISM 2.4GHz (2400 – 2483.5 MHz)
1 MHz each (e.g. 79 data + 3 control channels) ; f = 2400 + 1 * n, n = 1,…,79
2 MHz each (e.g. 37 data + 3 control channels) ; f = 2400 + 2 * n, n = 1,…,37
© 2013 Toshiba Corporation 25
Relationship between C-ch and D-ch
C-ch :
Scatter D-ch information
D-ch : Data transmission
and receipt
C-ch beacon
D-ch beacon
C-ch beacon
time
time
= Downlink packet (hub to node)
Channel access
TDMA based access in data channel and slotted ALOHA based
access in Control channel (2 channel Concept)
1 channel for Data (D-ch) and 1 channel for shared common
control(C-ch).
C-ch is an announcement channel and provides D-ch information
for initial connection setup.
© 2013 Toshiba Corporation 26
D-ch Frame Structure
Data
Transmission Continuous Data
Instantaneous Data
(Emergency Data)
Control /
Management e.g. Initial Connection
Contention-free period (CFP)
D-ch beacon
D-ch
Contention period (CP)
timeTDMA slotD-ch
TDMA Slotted-
ALOHA
CFP(Contention-free period) : Each node is assigned exclusive TDMA slots
CP(Contention period) : Sharing time slots by Slotted-ALOHA
© 2013 Toshiba Corporation 27
Initial Connection Setup Procedure
Contention-free period (CFP)
C-ch beacon
C-ch
D-ch beacon
D-ch
C-req C-res
C-ch beacon
Contention period (CP)
Slot assignment time
time
= Downlink packet (hub to node) =Uplink packet (node to hub)
TDMA slot
②
③
Node Opertions
① Detect RF channel# for D-ch by reading C-ch beacon
② Receive D-ch beacon
③ Connection Request (C-req*1) is transmitted during CP
④ Connection Response (C-res*2) is received
⑤ C-res indicates assigned slot numbers in CFP and data
transmission can be done using the assigned Slot numbers
①
④ ⑤
*1 Connection request
*2 Connection response
© 2013 Toshiba Corporation 28
Multi-use access mode (1)
B … …
Contention Free Period Contention Period
P
S
R
S
Emergency transaction
Sensing Contention access user transaction
PHY header + PSDU + PHY preamble + PHY header +
ACK + IFS + PHY preamble + transceiver turnaround
PHY preamble Transceiver
turnaround
Slot owner and contention
access user sensing
B
SSP#1 SSP#2 SSP#n SC/M#1 SC/M#m
PHY preamble Transceiver
turnaround
Beacon interval
Inactive period
…
© 2013 Toshiba Corporation 29
Multi-use access mode (2)
B
… …
Contention Free Period Contention Period
P
S
S
O
S
R
S
Emergency transaction
Sensing Slot owner transaction
Sensing Sensing Contention access user transaction
PHY header + PSDU + PHY preamble +
PHY header + ACK + IFS
PHY preamble Transceiver
turnaround
Slot owner may use additional headers to request
changes in allocations Slot owner and contention
access user sensing
Contention access user
sensing
B
SSP#1 SSP#2 SSP#n SC/M#1 SC/M#m
PHY preamble PHY preamble Transceiver
turnaround Transceiver
turnaround
Inactive period
…
Beacon interval
© 2013 Toshiba Corporation 30
Summary
24 hour monitoring and its record contribute future medication as
well as current and emergency medication.
Toshiba proposes a solution called SilmeeTM that can collect and
analyze vital signals in real time.
Toshiba contributes BAN standardization in ETSI TC Smart BAN.
Ultra Low Power Design
Timely Accessible Mechanism
Co-existence Robustness
© 2013 Toshiba Corporation 31
Thank you