Cordis MOBISERV FP7 248434 User manual

MOBISERV – FP7 248434
An Integrated Intelligent Home Environment for the
Provision of Health, Nutrition and Mobility Services to the
Elderly
Final Deliverable
D5.4: Multi-sensor system integrated into
wearable fabrics
Date of delivery: Month 38
Contributing Partners: CSEM, SMARTEX
Date: March 2013 Version: v1.2

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Document Control
Title: D5.4: Multi-sensor system integrated into wearable fabrics
Project:
MOBISERV
(FP7 248434)
Nature: Prototype
Dissemination Level:
Restricted
Authors: CSEM - SMARTEX
Origin: CSEM
Doc ID: MOBISERV_WEARABLE_PLATFORM_USER_MANUAL
Amendment History
Version Date Author Description/Comments
V1.0 2013-02-10 Marc Correvon (CSEM)
Tommaso Faetti (SMARTEX)
First version
V1.1 2013-03-05 Herjan van den Heuvel (SMH) Reviewed for submission,
added comments.
V1.2 2013-04-11 Marc Correvon (CSEM) Modification according
comments (see V1.1). Major
modification sections 6.2
and 6.3.
The information contained in this report is subject to change without notice and should not be construed as a commitment by a
ny members of
the MOBISERV Consortium. The MOBISERV Consortium assumes no responsibility for the use or inability to use any softwa
re or
algorithms, which might be described in this report. The information is provided without any warranty of any kind and the
MOBISERV
Consortium expressly disclaims all implied warranties, including but not limited to the implied warranties of merchanta
bility and fitness for a
particular use.

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Table of contents
GLOSSARY ..............................................................................................................................7
1 INTRODUCTION AND FEATURES................................................................................8
1.1 E XECUTIVE SUMMARY .................................................................................................8
1.2 G ENERAL OVERVIEW ...................................................................................................8
1.3 S TRUCTURE OF THE DOCUMENT ..................................................................................9
2 GARMENTS.....................................................................................................................10
2.1 D ESIGN OF THE NEW PROTOTYPES ............................................................................10
2.2 D AY G ARMENTS .........................................................................................................10
2.3 N IGHT G ARMENTS .....................................................................................................14
3 MOBISERV ANT
TM
MODULE FOR TEMPERATURE MONITORING .....................17
3.1 H ARDWARE DESCRIPTION ..........................................................................................17
3.2 S PECIFICATIONS .........................................................................................................17
3.2.1 System Specifications ...........................................................................................17
3.2.2 Measurement Channels Specifications ................................................................18
3.2.3 ANT
TM
Channel description.................................................................................18
3.2.4 Data Format.........................................................................................................19
4 DATA LOGGER...............................................................................................................21
4.1 H ARDWARE DESCRIPTION ..........................................................................................21
4.2 M ICRO -SD CARD MEMORY ........................................................................................21
4.3 C ONNECTORS .............................................................................................................22
4.3.1 USB ......................................................................................................................22
4.3.2 Sensor jack ...........................................................................................................22
4.4 S PECIFICATIONS .........................................................................................................22
4.4.1 System specification .............................................................................................22
4.4.2 Data logger specifications ...................................................................................23
4.4.3 Extracted parameters specifications....................................................................24
4.4.4 Power consumption versus operating mode ........................................................24
4.5 O PERATING MODES ....................................................................................................24
4.5.1 Mode Description.................................................................................................24
4.5.2 Mode control........................................................................................................25
4.5.2.1 Mode switch and status indicator ..........................................................................................................25
4.5.2.1.1 Description .........................................................................................................................................25
4.6 M ONITORING SIGNS AND DATA PROCESSING ............................................................26
5 WHSU SOFTWARE PACKAGE.....................................................................................28
5.1 B UILDING BLOCKS ......................................................................................................28
5.2 B LOCKS SPECIFICATION ............................................................................................28
5.3 D EVICE .......................................................................................................................29
5.4 D EVICE M ANAGER ......................................................................................................29
5.5 D OWNLOAD M ANAGER ...............................................................................................29
5.6 S ESSION M ANAGER .....................................................................................................29
5.7 V IEWER ......................................................................................................................29
5.8 S ESSION S TORAGE ......................................................................................................29
5.9 I NTEGRATION INTO K OMPAÏ R OBOT ........................................................................29

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6
WHSU MULTI-PARAMETER ACQUISITION SYSTEM ............................................31
6.1 I NTRODUCTION ...........................................................................................................31
6.2 M OBISER D ATA L OGGER S ERVER .............................................................................32
6.3 E XERCISES M ANAGER ...............................................................................................33
7 ELECTROMAGNETIC COMPATIBILITY....................................................................35
7.1 W ARNING ...................................................................................................................35
7.2 G UIDANCE AND MANUFACTURER ’ S DECLARATION – EMC EMISSIONS ...................35
7.3 G UIDANCE AND MANUFACTURER ’ S DECLARATION – EMC IMMUNITY ....................35
7.4 R ECOMMENDED SEPARATION DISTANCES .................................................................37
7.5 C OMPLIANT CABLES AND ACCESSORIES ....................................................................38
7.6 E SSENTIAL PERFORMANCES ......................................................................................38
8 GETTING STARTED.......................................................................................................39
9 MAINTENANCE AND CARE ........................................................................................41
9.1 G ENERAL GUIDANCE FOR THE GARMENT ..................................................................41
9.2 G ENERAL G UIDANCE FOR THE DATA LOGGER ..........................................................41
9.2.1 Cleaning and chemicals.......................................................................................41
9.3 D ISCLAIMERS .............................................................................................................41
9.3.1 User’s responsibility ............................................................................................41
9.3.2 Warnings ..............................................................................................................41
9.4 D ISPOSAL OF DEVICE .................................................................................................42

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Table of Figures
Figure 1: Direct connection with secondary user ......................................................................8
Figure 2: Direct connection with secondary user ......................................................................9
Figure 3: The sketch of the female (a) and male (b) day shirt.................................................11
Figure 4: The visual label with instructions for the correct use of shirts.................................12
Figure 5: The final prototypes of female (left) and male (right) vest ......................................12
Figure 6: The four textile electrodes in the inner side of the female shirt ...............................13
Figure 7 The inner side (left) and outer side (right) of the band..............................................13
Figure 8 The Male/Female sketch of the nightgown ...............................................................14
Figure 9 The label inserted in the nightgown ..........................................................................15
Figure 10 One of the two conductive cuffs with the integrated temperature sensor ...............15
Figure 11 Female version of the nightgown ............................................................................16
Figure 12 MOBISERV ANT module with the housing...........................................................17
Figure 13: Data logger overview .............................................................................................21
Figure 14: Collaborating components of WHSU.....................................................................28
Figure 15: Collaborating components of Exercises when integrated into Kompaï robot........30
Figure 16: Interaction between the PC software parts and the Mobiserv Data Logger...........31
Figure 17: Starting Mobiserv Data Logger Server ..................................................................32
Figure 18: Message telling a successful start of the Mobiserv Data Logger Server................32
Figure 19: Procedure to wet the electrodes..............................................................................39
Figure 20: Plugging the connector on the garments ................................................................39
Figure 21: Switching on the electronic ....................................................................................39
Figure 22: Placing the electronic inside the band and T-shirt .................................................40
Figure 23: Turning on the ANT module ..................................................................................40
Figure 24: Plugging the ERNI connector on the pyjama.........................................................40

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List of Tables
Table 1 System specifications..................................................................................................17
Table 2 Module Specifications ................................................................................................18
Table 3 ANT
TM
Channel Description ......................................................................................18
Table 4 Global Data Message Format .....................................................................................19
Table 5 ANT
TM
Message Payload ...........................................................................................19
Table 6: General characteristics...............................................................................................22
Table 7: Data logger characteristics.........................................................................................23
Table 8: Characteristics of the local extracted parameters ......................................................24
Table 9: Operating mode description.......................................................................................24
Table 10: Selectable mode by the mode switch.......................................................................25
Table 11: Selectable mode by the mode switch.......................................................................25
Table 12: Communication channels, acquired signals (raw data) ...........................................26
Table 13: Communication channels, algorithm channels (processed data).............................26
Table 14: Quality index ...........................................................................................................27
Table 15: Activity classification ..............................................................................................27
Table 16: Services offered by the Server to control the data logger........................................33
Table 17: Messages and handler of the exercises manager MRDS service.............................33
Table 18: – Electromagnetic emission –..................................................................................35
Table 19: – Electromagnetic immunity –.................................................................................36
Table 20: Recommended separation distances ........................................................................38
Table 21: List of compliant cables and accessories .................................................................38

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Glossary
Term Explanation
MOBISERV An Integrated Intelligent Home Environment for the Provision of Health,
Nutrition and Mobility Services to the Elderly
2D 2 dimensional
3D 3 dimensional
AAL Ambient Assisted Living
ADL Activities of Daily Living
AES Advanced Encryption Standard
BNs Bayesian networks
BR Breathing rate
DES Data Encryption Standard
DESL DES Lightweight
ECG Electrocardiogram
FVQ Fuzzy Vector Quantization
GPRS General Packet Radio Service
GPS Global Positioning System
HR Heart Rate
HRV Heart Rate Variability
IPsec Internet Protocol Security
LDA Linear Discriminant Analysis
MMSE Mini Mental State Examination
MPEG-7 Moving Picture Experts Group
ORU Optical Recognition Unit
PRU Physical Robotic Unit
PSTN Public switched telephone network
PTD Personal Trusted Device
RFID Radio Frequency Identification
SHACU Smart Home Automation and Communication Unit
SIFT Scale-invariant feature transform
SLAM Simultaneous localization and mapping
SVM Support Vector Machines
TLS Transport Layer Security
UCD User-centred design
UTAUT Unified Theory of Acceptance and Use of Technology
WHSU Wearable Health Supporting Unit
WIPR Weizmann-IAIK Public-Key for RFID

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1Introduction and features
1.1 Executive summary
This document accompanies the actual / “physical” prototypes of the MOBISERV Wearable
Health Supporting Unit (WHSU) (shirt and band for daily use, pyjamas for night use,
together with a data logger and an application on PC). It aims at providing general
information about the prototype(s) and to briefly explain how they work.
1.2 General overview
The WHSU can be used in two different configurations. The first one concerns the direct use
with secondary user; that means without the need of the complete MOBISERV infrastructure.
The two actors are the patient and the healthcare professional. The figure below shows the
configuration needed.
Figure 1: Direct connection with secondary user
This configuration can be used in the hospital or during a medical examination and does not
need any intervention from the patient.
The second configuration is the complete system involving the PRU, the SHACU and the
WSHU. This configuration is used daily at home. The difference between the two
configurations is the application on PC. The viewer for the secondary user allows the
visualization of the whole set of vital signs and extracted parameters in real time while the
second configuration is a full long term monitoring of the patient in his/her daily life.
The data logger monitors vital signs (ECG and respiration), activity (3-axis acceleration) and
physiological extracted parameters, which are Heart rate (HR), Breathing rate (BR), activity
classification (lying, standing, walking, running and others). All the data can be recorded
(daily or nightly sessions) in a removable SD memory card (recording mode) or / and sent in
real time via Bluetooth to a PC (streaming mode). All recorded vital sign and processed data
can be downloaded via USB link while the data logger is recharging. It is a convenient,
economical way for later review of the recorded information.

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Figure 2: Direct connection with secondary user
1.3 Structure of the document
This document is organized as follows. The first chapter provides a general overview of the
system and possible configurations. The second chapter is dedicated to the description of the
daily and nightly application and the garment that is used in each case. The third chapter is
devoted to the technical description of the body sensor network based on ANT technology.
The fourth chapter describes the data logger in terms of hardware specifications and
maintenance. The fifth chapter gives an overview of the monitoring infrastructures for both
the secondary user environment and with the Robot and the SHACU. Chapter six gives the
necessary information to install the application on PC for the secondary user as well as a
short description of how to use the viewer. Chapter 7 gives some indications on the data
logger and the compliance with electrical and safety standard for medical devices. Chapter 8
provides a “getting started” description for the user himself. Finally, chapter 9 is advice
guideline related to the care and maintenance of the hardware (garment and embedded
electronics).

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2Garments
Within the scope of MOBISERV two different types of garments have been created for vital
signs monitoring: the first one refers to sensorized shirt and band for day use, and the second
one to nightgown for night use. The garments have been deeply evaluated several times
during the project and revised accordingly, following suggestions and remarks carried out by
experts, carers and finally end-users in an iterative approach.
Following the delivery of the first set of wearable prototypes (D 5.3), an extensive evaluation
of WHSU has been conducted in 2012 in four stages:
•co-operative evaluation with carers,
•expert review by a care expert,
•co-design evaluation sessions with older adults,
•home trials.
The results are described in D2.5 Issue II - Appendix 3. The outcomes of this evaluation
study have been deeply discussed among the involved partners to start a second refinement
process. On the garment side, the changes were fundamentally focused on ergonomic,
comfort and usability aspects. The goal: to deliver a set of final prototypes as close as
possible to the elderly needs. No changes were made on the number and type of sensors
integrated into the textiles given to the fact that they can be considered sufficient for the
proposed scenarios.
In the following chapters the final prototypes of garments are presented and described. Care
and maintenance guide together with instructions for the correct use of the garments can be
found in chapters 8 and 9.
2.1 Design of the new prototypes
The main issues and remarks raised during the evaluation trials can be summarized as
follows:
•Users could be disoriented and confused by using the WHSU
•In the night systems, people can be confused by the use of the two data-loggers
•Pyjamas were not easy to be worn due to a lack of a front opening
•Elderly in general prefer to not wear lower part of pyjamas during the night
•The pockets of the garments didn't prevent the data-logger to coming out, especially
while sleeping
•People were afraid to damage the garments while washing them
•Temperature sensors and cables could be scaring and not comfortable for users
•People have difficulties to understand which is the inner part of the band
Generally, positive feedbacks were given on the chosen materials (mainly cotton based
yarns), and the use of zip and Velcro®.
2.2 Day Garments
Before starting the development of the new wearable systems, some sketches were designed
and submitted to the expert partners to eventually check some inconsistency.
Figure 3 presents the sketches for the day garments.

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Figure 3: The sketch of the female (a) and male (b) day shirt
The improvements to the final prototypes of shirts can be resumed in the following list of
bullets:
•Pockets are now closed by Velcro®.
•A colour code to clearly bind the type of electronics with the pocket and connector is
used to avoid confusion.
•A label with visual instruction for the correct use is applied to the shirts.
•A label with info on size, materials and washing instructions is applied to the shirts
•Removable long/short sleeves are added to the shirts to customize the dressing and to
increase thermal comfort
•Textile electrodes are integrated into an adjustable strip to enhance the fitting of the
sensing part to the user
The shirts are made with cotton fabric that is one of the preferred materials by elderly people.
As the previous prototypes, both shirts and band presents:
a) four textile electrodes placed on the chest region to detect ECG (1 Lead) and
respiration through bio impedance measurements,
b) one custom connector to plug the electronic,
c) a pocket to house the electronic during use,
d) a Velcro® fastening for the band and a zip for the shirts.
A label with visual instructions for the correct use of the shirts has been designed to facilitate
the users in the wearing of the shirts. The label is shown in Figure 4:

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Figure 4: The visual label with instructions for the correct use of shirts
A very simple label assists the user by means of four basic steps, during the use of the
WSHU. The final prototypes of shirts for female and male are illustrated in Figure 5 and
Figure 6.
Figure 5: The final prototypes of female (left) and male (right) vest

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Figure 6: The four textile electrodes in the inner side of the female shirt
The day garments collection also includes a band that can be used during a short time
window, for instance just to monitor an exercises session during the day.
The band could help to overcome possible lacks in acceptability by the users that do not want
to wear the sensorized shirt for the whole day.
The band has been improved by:
•Redesigning pocket to increase ergonomics and comfort.
•Using different colours for the inner and outer side of the band to avoid confusion.
•Inserting a label with visual instructions for the correct use.
•Inserting a label with info on size, materials and washing instructions.
Capital letters L and R has been inserted into the bands to facilitate orientation when wearing
it.
The inner and outer side of the band are shown in Figure 7
Figure 7 The inner side (left) and outer side (right) of the band

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2.3 Night Garments
As for the day garments also night monitoring system has been completely redesigned to
include all recommendations made by the users and by the experts within the evaluation
trials. In particular, the idea to have a pyjama has been abandoned and replaced by a
nightgown that seems to be easier worn and more accepted by elderly in general.
A first sketch of the night garments has been designed and submitted to experts. The sketch is
shown in figure 6.
Figure 8 The Male/Female sketch of the nightgown
As a result the following list of bullets describes the improvements made with respect to
previous pyjamas prototypes:
•Pyjamas are replaced by nightgown to increase comfort and usability.
•Pockets are closed by Velcro® to prevent electronics to slide out while sleeping.
•A colour code to clearly bind the type of electronics with the pocket and connector is
used to avoid confusion.
•A label with visual instruction for the correct use is applied to the nightgown.
•A label with info on size, materials and washing instructions is applied to the
nightgown
•Velcro fastening on wrist is not comfortable and is replaced by elastic rib
•Temperature sensor is inserted into a soft pocket and it could be glued to avoid
discontinuity between metal and skin
•The fastening on Nightgown is now similar to the one used in the shirts to let the user
to be able to fully open it.

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The label for nightgown also contains the instructions to correctly use the ANT data logger
for temperature monitoring, as shown in figure 7.
Figure 9 The label inserted in the nightgown
Two textile electrodes are available as conductive cuffs (see Figure 10). An elastic material
together with a cord lock system has been inserted in order to let the user adjust and optimize
the skin/electrode contact without losing comfort. The chosen sensor is the same commercial
thermistor of the previous prototypes, which gives reliable information with a 0.1 degree of
accuracy. One sensor has been integrated into the nightgown, inside the cuff. The choice of
the location is aiming at two different goals: to maintain comfort for the user on one side, and
to guarantee a good contact with the skin in order to reach a thermal equilibrium with the
body on the other side. The chosen region seems to be the best trade-off between reliable
information and comfort for the user.
Figure 10 One of the two conductive cuffs with the integrated temperature sensor

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A specific ANT
TM
module has been designed to interface properly the sensors as explained in
chapter 3.
Nightgown presents:
a) Two textile electrodes placed on the cuffs that can be used to detect ECG and are
adjustable by means of elastic ribs.
b) One thermistor inserted into the cuff.
c) One custom connector to plug the main electronic.
d) One ERNI connector to plug the ANT
TM
temperature module.
e) Two pockets to house both the electronics during the sleep.
Figure 11 Female version of the nightgown

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3MOBISERV ANT
TM
Module for temperature
monitoring
A wireless module has been specifically designed to measure the resistance of the thermistors
that are integrated in the nightgown to monitor the skin temperature of the subject. No
changes have been made on this side with respect to the previous prototypes.
3.1 Hardware description
MOBISERV ANT
TM
module provides the following accessories:
−one 3-pin ERNI connector for the thermistors,
−one on/off switch,
−one status led blinking when transmitting.
Figure 12 MOBISERV ANT module with the housing
3.2 Specifications
3.2.1 System Specifications
An overview of the general characteristics of the MOBISERV ANT
TM
module is listed in
Table 1.
Table 1 System specifications
Characteristics
Power management
Battery CR 2430, 3V Lithium coin cell (disposable)
Battery capacity 280 mAh
Autonomy
Autonomy while
streaming Up to 560 hours
Temperature
Operating 0 to 50 °C

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Characteristics
Storage -20 to 50 °C
Humidity Operational up to 95% non-condensing
Communication interface
Wireless ANT
TM
wireless module ANT11TS33M5IB
Certifications FCC Test ready (CFR47), RHOS compliant
Device
Dimensions 41 x 41 x 23mm
Weight 27 gr.
3.2.2 Measurement Channels Specifications
The developed module has been designed with two identical analogue front-ends to measure
the resistance of the sensors. All the characteristic of the hardware channels are summarized
in Table 2.
Table 2 Module Specifications
Characteristics
Temperature Front Ends (2 identical)
Type of measurement Two wires DC measurement
Range 22400 Ωto 42388 Ω
Bandwidth DC to 0.5 Hz
ADC Sampling rate 32 Hz
ADC Resolution 16 bits
3.2.3 ANT
TM
Channel description
The module offers ANT
TM
connectivity acting as a Master and sending messages in broadcast
mode, in order to have lower power consumption according to ANT
TM
specifications in
SensRcore™ mode
1
. Two modules have been developed in this prototype. They can be
distinguished by different RF frequency offset. The ANT
TM
channel configuration parameters
are listed in Table 3.
Table 3 ANT
TM
Channel Description
ANT
TM
Channel Configuration
Device ID
Device Number 1 Unique ANT
TM
device number
Device type 1 Unique ANT
TM
device type
1
Please visit www.thisisant.com for further details on protocol specifications

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ANT
TM
Channel Configuration
(pairing bit disabled)
Transmission Type 1
No shared address, Global
Data Identification Byte
present
Network configurations
Channel type 0x10 Bidirectional Master Transmit
Channel
Channel Period 16384 2 Hz Message Rate
Network number 0 Default public network
Message Rate 2 Hz Message Rate
RF Frequency Offset 0 MHz for module 1
72 MHz for module 2
Default Frequency 2400 MHz
Default Frequency 2472 MHz
3.2.4 Data Format
3 different data channels, more precisely the cuff sensor, abdominal sensor and battery
voltage, are assigned to the physical ANT channel specified by Device ID parameters listed
in Table 3. The data are transmitted according to ANT SensRcore™ Global Data Message
Format that is reported in Table 4, in which Global Data identification byte value is 0x41
(analogue data).
Table 4 Global Data Message Format
Data 0 Data 1 Data 2 Data 3 Data 4 Data 5 Data 6 Data 7
Global Data
Identification
Byte
Global
Defined
Data 1
Global
Defined
Data 2
Global
Defined
Data 3
Global
Defined
Data 4
Global
Defined
Data 5
Global
Defined
Data 6
Global
Defined
Data 7
Table 5 shows the significance of transmitted bytes:
Table 5 ANT
TM
Message Payload
ANT Message
Payload Byte Parameters Type Range Description
Global Data Byte 3 Analogue Signal Source UCHAR 0..255
Indicates signal source:
0x00 --> Temp sensor 1
(hip sensor)
0x01: Temp sensor 2
(cuff sensor)
0xFF: Battery Voltage
Global Data Byte 4 Max (8-bit) UCHAR 0..255
8 most significant bits of
the maximum recorded
analogue level

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ANT Message
Payload Byte Parameters Type Range Description
Global Data Byte 5 Min (8-bit) UCHAR 0..255
8 most significant bits of
the minimum recorded
analogue level
Global Data Byte 6-
7 Measured A/D Data USHORT 0..65536
The measured A/D data
from the analogue signal
(LSB first)
The measured A/D data represents the voltage drop across the thermistor. In order to
calculate the corresponding resistance value the following conversion must be applied to the
data value:
 = 0.305 ∙  + 22400Ω
Once the resistance value is calculated, the Steinhart-Hart equation can be used to estimate
the corresponding value of temperature (Kelvin degrees):
1
=  +  ∙  +  ∙ lnln

where A = -6.151082E-3, B = 1.2127443E-3 and C = -2.8552001E-6