for Healthcare Services

flangeeasyMobile - Wireless

Nov 21, 2013 (3 years and 6 months ago)

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Peter Planinšič,

University of Maribor

Faculty of Electrical Engineering and Computer Science

peter.planinsic@uni
-
mb.si


Wireless Sensor Networks
for Healthcare Services


UNIVERSITY OF MARIBOR


FACULTY OF
ELECTRICAL ENGINEERING AND
COMPUTER SCIENCE

Smetanova ul. 17

SI
-
2000 Maribor

SLOVENIA

Telephone: +386 2 220 70 00

Telefax: +386 2 220 7272

Internet: http://www.feri.uni
-
mb.si/

email:

feri@uni
-
mb.si

Institute of Automation



(Laboratory for signal processing, systems and control)

Institute of Power Engineering

Institute of Robotics

Institute of Computer Science

Institute of Informatics

Institute of Mathematics and Physics

Institute of Media Communications

3/15/2012

Peter
Planinšič

I
BM
Academic

Days

Brasov 2012

2

Institute of Electronics and Telecomunications

Content


INTRODUCTION


WSN USING MODULE SPaRCMosquito v.2


RESEARCH AND APPLICATION


IBM AND WSN


CONCLUSION


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Planinšič

IBM
Academic

Days

Brasov 2012

3

INTRODUCTION



Advances

in

wireless

communications

and

electronics

and

MEMS

lead

to

development

of

WSN

of

low

cost
,

low

power

and

multifunctional

sensors


This

sensor
s
,

referred

also

as

sensor

nodes

or

WSN
-
nodes

or

motes

are

small

and

able

to

sense

physiological

data,

process

this

data

and

communicate

with

each

other

or

with

base

station
.




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2012

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Basic

futures

of

WSN

that

make

them

different

from

other

wireless

ad

hoc

and

mesh

networks

:


self organizing capabilities


short range broadcast applications


multihop routing


dense deployment


corporative effort


changing of topology


limitation in energy, memory and computing
capabilities.

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WSN can monitor
different physical values
:


temperature



humidity



light


pressure


noise


soil composition,



object motion

(detection, and tracking)


objects weight, size, etc


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Planinšič

IBM Academic Days Brasov 2012

6


Therefore WSN can be used in many
applications
:


military applications,


environment monitoring,


disaster prevention, home intelligence,


Surveillance


medical care (healthcare)


and many others


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2012

7


Applications

of
WSN and healthcare
:


remote virus monitoring


patient tracking and monitoring


people with acute respiratory syndrome (SARS)


WSN
-
sensors attached to medical devices to measure
their heart rates, body temperature


blood pressure, pulse etc.


continually analyze the blood stream


an automatic alert is generated


medical statistics


glucose monitoring

(diabetes)





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2012

8

WSN USING MODULE
SPaRCMosquito

v.2



It consists of three components: hardware, software
and simulation software.


Hardvare:
SPaRCMosquito v.2

Module


Base module


Extended module (
with

Daugther module)

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Bloch Scheme of SPaRCMosquito v.2 Base
Module


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2012

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R
adio chip MRF24J40
:


support communication standard IEEE 802.15.4
(Zigbee).


It supported free RF
-
band 2.4 MHz


uses compact printed circuit antenna (‘’microstrip’’
antenna).

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2012

11

SPaRCMosquito v.2 BaseModule


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2012

12


Extended (D
aughter
)

module
:


consists of several
communication interfaces


different kinds of communication
protocols

(
TCP/IP,
CAN, and USB (over VCP)



The

Cortex

M
3

processor

is

power

enough

for

emulating

web

server
;

therefore

the

module

can

be

connected

over

IP
-
network,

if

it

has

f
ree

IP
-
address
.



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2012

13

Block Scheme of SPaRCMosquito v.2 Extended
(Daughter) Module


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2012

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SPaRCMosquito v.2 Daughter Module

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RESEARCH AND APPLICATION



S
ome of our applications
:


The temperature distance measurement


Distance measurements and localization


Compression of ECG signals



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The temperature distance measurement
:


The applications can be
modified

for the monitoring
the temperature or other
clinical parameters
(blood
pressure, pulse etc) of patients in healthcare
applications.


suitable arranged extended modules


communicate over WSN with base or central station.


The digital temperature sensor

TL77

is used


Zegbee


protocol

or
‘’MiWi‘’ of company Microchip can
be used

or simple own


used WSN
-
base station cans servers as web server

(monitoring over IP,

Ethernet
-
connector
)

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2012

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The web page running on Cortex M3


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Distance measurements and localization
:


this field is still the object of intensive research


can be directly
applied for patient’s localization and
monitoring
in healthcare applications.


this field is still the object of
intensive research


MRF24J40 using standard IEEE802.15.4 enable
measurement of
received

RF
signal power
, the so called
Received Signal Strength Indicator
(RSSI) and
Link
Quality Indicator
(LQI).






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F
ree space

propagation model

:


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n
T
R
T
R
d
G
G
P
P




)
4
(
2



Log normal model

:


)
/
log(
10
)
(
0
0
0
d
d
n
P
d
P





2
-
ray or ground reflection model



More sophisticated models (Bayes,
particle filters)


Inside measurements

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0
50
100
150
200
250
300
350
-90
-80
-70
-60
-50
-40
-30
-20
Distance [cm]
Power [dBm]


Teoretical calculated
1.measured
2.measured
1. and 2. averaged
Outside measurements

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0
10
20
30
40
50
60
70
80
90
-95
-90
-85
-80
-75
-70
-65
-60
-55
-50
Distance [m]
Power [dBm]


Measured
2-ray teoretical calculated model
Log-normal teoretical calculated model

Angle

of

arrival

(AoA)

measurements

with

rotatable

omnidirectional

microstrip

antenas


Accepted

paper

for

IEEE

Sensor

Journal


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2012

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H
-
plane (violet curve) and E
-
plane (red curve)

The
AoA

measuring device

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2012

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Compression of ECG signals


Autoregressive (AR) predictive coding


bit
-
rate reduction and energy saving




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Compression side scheme

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ECG
-
signals

: original,
predicted
,
error

signal

IBM AND WSN


http://domino.
research
.
ibm
.
com
/
comm
/
research
.
nsf
/
pages
/r.
communications
.innovation2.html
:


Zurich

Sensor

Networks

&

Edge

Server

Software

projects



A

reference

testbed

as

a

demo

platform

for

client

engagements
.

U
ses

the

Service

Management

Framework

(SMF),

IBM’s

implementation

of

the

Open

Services

Gateway

Initiative

(
OSGi
)

specification,

(
remotely

start,

stop

and

manage

message

filtering

applications

and

software

packages

-
running

on

the

gateway

without

interrupting

the

operation

of

the

device
)
.


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2012

27


IBM

WebSphere

Micro

Environment

running

a

J
9

Java

virtual

machine

(
the

gateway


for

WSN,

using

telemetry

transport

protocol

(MQtt)

)


The

IEEE

802
.
15
.
4

/

Zigbee

standard

is

one

of

the

most

promising

candidates

for

designing

WSN




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2012

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http://www.zurich.ibm.com/moterunner
/:


Mote Runner
,
IBM’s infrastructure platform
for
wireless sensor networks (WSN)
:



is based on a virtual machine tailored from scratch for
resource
-
constraint hardware environments.

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2012

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CONCLUSION



Advances

in

research

and

development

in

wireless

sensor

networks

enable

many

useful

healthcare

applications


The

possibilities

of

WSN

are

ubiquitous



However,

many

formidable

challenges

must

be

solved

before

some

exciting

applications

may

become

reality


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Peter Planinšič IBM Academic Days Brasov
2012

30