MOBISERV – FP7 248434 An Integrated Intelligent Home

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

D5.4: Multi-sensor system integrated into wearable fabrics 2/42

MOBISERV FP7 248434

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 any members of

the MOBISERV Consortium. The MOBISERV Consortium assumes no responsibility for the use or inability to use any software or

algorithms, which might be described in this report. The information is provided without any warranty of any kind and the MOBISERVConsortium expressly disclaims all implied warranties, including but not limited to the implied warranties of merchantability and fitness for a

particular use.


MOBISERV FP7 248434

Table of contents GLOSSARY .............................................................................................................................. 7

1 INTRODUCTION AND FEATURES ................................................................................ 8

1.1 EXECUTIVE SUMMARY ................................................................................................. 8

1.2 GENERAL OVERVIEW ................................................................................................... 8

1.3 STRUCTURE OF THE DOCUMENT .................................................................................. 9

2 GARMENTS ..................................................................................................................... 10

2.1 DESIGN OF THE NEW PROTOTYPES ............................................................................ 10

2.2 DAY GARMENTS ......................................................................................................... 10

2.3 NIGHT GARMENTS ..................................................................................................... 14

3 MOBISERV ANTTM

MODULE FOR TEMPERATURE MONITORING ..................... 17

3.1 HARDWARE DESCRIPTION .......................................................................................... 17

3.2 SPECIFICATIONS ......................................................................................................... 17

3.2.1 System Specifications ........................................................................................... 17

3.2.2 Measurement Channels Specifications ................................................................ 18

3.2.3 ANTTM

Channel description ................................................................................. 18

3.2.4 Data Format......................................................................................................... 19

4 DATA LOGGER............................................................................................................... 21

4.1 HARDWARE DESCRIPTION .......................................................................................... 21

4.2 MICRO-SD CARD MEMORY ........................................................................................ 21

4.3 CONNECTORS ............................................................................................................. 22

4.3.1 USB ...................................................................................................................... 22

4.3.2 Sensor jack ........................................................................................................... 22

4.4 SPECIFICATIONS ......................................................................................................... 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 OPERATING 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 MONITORING SIGNS AND DATA PROCESSING ............................................................ 26

5 WHSU SOFTWARE PACKAGE ..................................................................................... 28

5.1 BUILDING BLOCKS ...................................................................................................... 28

5.2 BLOCKS SPECIFICATION ............................................................................................ 28

5.3 DEVICE ....................................................................................................................... 29

5.4 DEVICEMANAGER ...................................................................................................... 29

5.5 DOWNLOADMANAGER ............................................................................................... 29

5.6 SESSIONMANAGER ..................................................................................................... 29

5.7 VIEWER ...................................................................................................................... 29

5.8 SESSION STORAGE ...................................................................................................... 29

5.9 INTEGRATION INTO KOMPAÏ ROBOT ........................................................................ 29


MOBISERV FP7 248434

6 WHSU MULTI-PARAMETER ACQUISITION SYSTEM ............................................ 31

6.1 INTRODUCTION........................................................................................................... 31

6.2 MOBISER DATA LOGGER SERVER ............................................................................. 32

6.3 EXERCISES MANAGER ............................................................................................... 33

7 ELECTROMAGNETIC COMPATIBILITY .................................................................... 35

7.1 WARNING ................................................................................................................... 35

7.2 GUIDANCE AND MANUFACTURER’S DECLARATION – EMC EMISSIONS ................... 35

7.3 GUIDANCE AND MANUFACTURER’S DECLARATION – EMC IMMUNITY .................... 35

7.4 RECOMMENDED SEPARATION DISTANCES ................................................................. 37

7.5 COMPLIANT CABLES AND ACCESSORIES .................................................................... 38

7.6 ESSENTIAL PERFORMANCES ...................................................................................... 38

8 GETTING STARTED....................................................................................................... 39

9 MAINTENANCE AND CARE ........................................................................................ 41

9.1 GENERAL GUIDANCE FOR THE GARMENT .................................................................. 41

9.2 GENERAL GUIDANCE FOR THE DATA LOGGER .......................................................... 41

9.2.1 Cleaning and chemicals ....................................................................................... 41

9.3 DISCLAIMERS ............................................................................................................. 41

9.3.1 User’s responsibility ............................................................................................ 41

9.3.2 Warnings .............................................................................................................. 41

9.4 DISPOSAL OF DEVICE ................................................................................................. 42


MOBISERV FP7 248434

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


MOBISERV FP7 248434

List of Tables

Table 1 System specifications .................................................................................................. 17

Table 2 Module Specifications ................................................................................................ 18

Table 3 ANTTM

Channel Description ...................................................................................... 18

Table 4 Global Data Message Format ..................................................................................... 19

Table 5 ANTTM

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


MOBISERV FP7 248434

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


MOBISERV FP7 248434

1 Introduction 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.


MOBISERV FP7 248434

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).


MOBISERV FP7 248434

2 Garments 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.


MOBISERV FP7 248434

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:


MOBISERV FP7 248434

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


MOBISERV FP7 248434

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


MOBISERV FP7 248434

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.


MOBISERV FP7 248434

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


MOBISERV FP7 248434

A specific ANTTM

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 ANTTM

temperature module.

e) Two pockets to house both the electronics during the sleep.

Figure 11 Female version of the nightgown


MOBISERV FP7 248434

3 MOBISERV ANTTM 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 ANTTM

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


MOBISERV FP7 248434

Characteristics

Storage -20 to 50 °C

Humidity Operational up to 95% non-condensing

Communication interface

Wireless ANTTM

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 Ω to 42388 Ω

Bandwidth DC to 0.5 Hz

ADC Sampling rate 32 Hz

ADC Resolution 16 bits

3.2.3 ANTTM

Channel description

The module offers ANTTM

connectivity acting as a Master and sending messages in broadcast

mode, in order to have lower power consumption according to ANTTM

specifications in

SensRcore™ mode1. Two modules have been developed in this prototype. They can be

distinguished by different RF frequency offset. The ANTTM

channel configuration parameters

are listed in Table 3.

Table 3 ANTTM

Channel Description

ANTTM Channel Configuration

Device ID

Device Number 1 Unique ANTTM

device number

Device type 1 Unique ANTTM

device type

1 Please visit www.thisisant.com for further details on protocol specifications


MOBISERV FP7 248434

ANTTM 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 ANTTM

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


MOBISERV FP7 248434

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 ∙ + 22400Ω

Once the resistance value is calculated, the Steinhart-Hart equation can be used to estimate

the corresponding value of temperature (Kelvin degrees):

1

= + ∙ + ∙ lnln

where A = -6.151082E-3, B = 1.2127443E-3 and C = -2.8552001E-6


MOBISERV FP7 248434

4 Data logger 4.1 Hardware description The first version of the MOBISERV data logger has been updated with the integration of an

ANT module used for the wireless body array network. In the first version, the respiration

sensor was a strain gauge, in this second version, there is the possibility to use either a strain

gauge or the impedance plethysmography measurement. CSEM has redesigned the user

interface by adding 4 LEDs. The jack connector is now integrated into the housing in order to

increase ergonomics. The embedded signal processing has been improved. This version of

MOBISERV data logger provides the following features:

− one 4-pin jack connector for textile sensors (ECG and IPG or strain gauge),

− one USB connector for configuration and data transfer,

− one micro-SD memory card slot,

− four status light,

− one mode switch,

− one reset switch accessible through a hole.

Figure 13: Data logger overview

4.2 Micro-SD card memory The device records data into a micro-SD card memory. The device will immediately stop

recording if the memory is removed while in operation. Please note that only the provided

2GB micro-SD Card (reference: Scandisk SDSDQ-002G-E11M or Kingston SDC/2GB) have

been fully tested. No support for other brands or memory models can be guaranteed, neither

support for SDHC cards or non-compliant cards. This device has only a very limited support

for a file-system (private data format named sewfps). An SD card used with the MOBISERV


MOBISERV FP7 248434

Data logger can only be filled with data from the MOBISERV Data logger. Once formatted

by the device, it should not be used to store other files on it. If a new card is inserted, the

device will refuse to use it until it is properly formatted. The SD memory card can be

formatted by pressing the mode button until the status indicators are red and blue after the

device has tentatively been switched into recording mode.

4.3 Connectors

4.3.1 USB

The USB link consists of a standard USB mini-B plug, used for battery charging and data

communication.

4.3.2 Sensor jack

The jack connector with 4-pole is used to connect the textile electrode for ECG measurement

and for the IPG measurement for breathing monitoring.

4.4 Specifications

4.4.1 System specification

The following table highlights the general characteristics of the MOBISERV data logger.

Table 6: General characteristics

Characteristics

Power management

Battery Lithium-polymer, up to 750mAh

Battery charging Through USB

Battery charging time Up to 2h30

Storage capability

Memory Micro-SD card, 2GB

Autonomy

Autonomy while recording Up to 25 hours

Autonomy while

streaming Up to 10 hours

Stand-by time Up to 28 days

Memory capacity (with

1GB)

Up to 9 days continuous logging (depending upon exact device

settings)

Temperature

Operating 0 to 50 °C

Storage -20 to 50 °C

Humidity Operational up to 95% non-condensing

Device

Dimensions 63 x 65 x 15 mm3


MOBISERV FP7 248434

Characteristics

Weight About 60 gr

4.4.2 Data logger specifications

The following table shows the characteristics of the data logger related to the vital signs

monitoring and the user communication interface.

Table 7: Data logger characteristics

Characteristics

ECG

Type of measurement Bio-potential measurements on thorax

Sensors Textile electrodes

Number of leads 1

Input sensitivity ±5mV

Bandwidth 0.05Hz to 30Hz

Resolution Equivalent to12 bits

Sampling rate 1000Hz

Respiration

Type of measurement Impedance Plethysmography (IPG)

Sensor Textile electrode

Frequency measurement 10kHz to 100kHz, multiple frequency measurement possible

Bandwidth DC to 10Hz

Resolution Equivalent to 12 bits

Sampling rate 25Hz

Activity

Sensor Capacitive micro-machined 3-axis accelerometer

Selectable sensitivity ±2g or ±8g (default setting)

Bandwidth DC to 10Hz

Signal processing

ECG − Heart rate

− Signal quality

− R-R intervals

Respiration − Breathing rate

Activity

− Classification

− Energy Expenditure

− Fall Detection


MOBISERV FP7 248434

Characteristics

Communication interfaces

Wireless Bluetooth 2.0, class 1/2/3

SPP (Serial Port Profile)

ANTTM AP2

Wired USB 2.0 FS (Full Speed)

4.4.3 Extracted parameters specifications

The following table gives the characteristics of the extracted parameters related to the vital

signs monitoring and the user communication interface.

Table 8: Characteristics of the local extracted parameters

Characteristics

Local signal processing

Heart Rate (HR) every 5.5 seconds, 8 bits

Heart Rate Quality Index every 5.5 seconds, 8 bits

Breath rate (BR) every 15 seconds, 8 bits

Activity classification every 5 seconds,

classified as: lying, standing, walking, running or other

4.4.4 Power consumption versus operating mode

The lifetime of the battery is strongly dependant of the data logger operating mode. Bluetooth

is the most important power consumer. Nevertheless the capacity has been increased from

340mAh to 750mAh.

4.5 Operating modes

4.5.1 Mode Description

The data logger can meet five operating modes as showed in the following table.

Table 9: Operating mode description

Operating

mode Status indicator Action to enter that mode Action to leave that mode

Stand-by Green flash From sleeping mode,

press the mode switch

Return in sleep mode after

a few minutes if no

command is initiated

Charging Green/Orange/Blue Connect USB to

computer or hub

Red when plugged Connected through USB

but the device clock is

not set

Use either wxConfigurator

or sew_scope to set the

clock.

Sleeping - Do nothing Action on the mode switch


MOBISERV FP7 248434

Operating

mode Status indicator Action to enter that mode Action to leave that mode

Streaming Blue flash Connect through

Bluetooth

Controlled by the

Bluetooth connection

Recording Orange flash Press the mode button

until the status light is

orange.

Press the mode button

until the status light is

green.

Followed by green or

red short or longer

flash

Quality of the ECG signal: from long red, short red,

short green to long green for low quality to good

quality.

4.5.2 Mode control

4.5.2.1 Mode switch and status indicator

4.5.2.1.1 Description

The mode button can be used to switch the device into several predefined mode. The user has

to act on the mode switch for a time depending of current state and the desired state. The four

LEDs indicate the status of the data logger during the selection with the switch mode and

either the quality of the ECG and respiration signals or the state of Bluetooth during

operation. The four LEDs consist of one red, one green, one orange and one blue.

Table 10: Selectable mode by the mode switch

Action Result Short button press Store a marker (disabled in default settings)

Longer button press

(status becomes orange or

green)

Switch from idle to recording (red) or from recording to

idle (green) if the button is released while the status is lit

Long button press

(status becomes blue)

Disable (light blue to darker blue transition) or reactivate

the Bluetooth link (darker blue to lighter blue transition).

The following table summarizes the description above.

Table 11: Selectable mode by the mode switch

LED status Mode Description

SLEEP Mode initial,

Ultra low power consumption

STAND-BY No recording,

Bluetooth ON

RECORDING

ECG quality indication,

Memory writing,

Bluetooth OFF

RECORDING & BLUETOOTH ON


Memory writing,

Bluetooth ON


MOBISERV FP7 248434

LED status Mode Description

RECORDING & STREAMING


Memory writing,

Streaming with viewer

STREAMING Streaming with viewer

CHARGING Connected through USB

CHARGING / CLOCK not set Connected through USB but the

device clock is not set

BATTERY FULLY CHARGED Connected through USB

4.6 Monitoring signs and data processing The vital signs ECG, respiration, and the activity 3-axis acceleration are the primary signals

acquired. A channel number, size (number of bits), a format and a sampling rate are

associated to each of them. Table 12 gives the definition of these primary signals.

Table 12: Communication channels, acquired signals (raw data)

Number Name Size [bits] Format Rate [Hz]

1 ECG(AI) 12 Signed 250

6 Acc. X 16 Signed 25

7 Acc. Y 16 Signed 25

8 Acc. Z 16 Signed 25

13 Respiration 16 Signed 25

After processing some features can be extracted from the primary signals. In the same way, a

channel number, processed data name, size, format and period rate is associated to each

processed data.

Table 13: Communication channels, algorithm channels (processed data)

Number Name Size [bits] Format Rate

Period Unit

129 ECG: quality 8 Unsigned 5.5s See Quality index

132 ECG: HR 8 Unsigned 5.5s Beat/min

133 ECG: RR 16 Unsigned ∼1s

139 Activity:

classification 8 Unsigned 5s

See Activity

classification

141 Resp.: BR 8 Unsigned 15s


MOBISERV FP7 248434

The monitoring of the ECG and the respiration is sensitive to the movement artefact. A

quality index can be extracted from the processing algorithm to indicate a degree of

confidence of the result.

Table 14: Quality index

Quality Description

0 Very poor quality

255 Excellent quality

The 3-axis accelerometer measures the acceleration in an orthogonal referential. The level of

dynamic activity and the posture can be extracted from these three signals. Five levels of

activities have been defined.

Table 15: Activity classification

Activity

classification Activity type

0 Other

1 Lying

2 Standing/Sitting

3 Walking

4 Running

In addition to the signals that can be streamed, the device can respond to the requests from

the manager about the energy expenditure during the last 45 minutes. Thus the application

can know if the subject is doing the activity or the exercise expected to be done. Another

parameter to be controlled is the detection of the fall of the subject. This information has to

be polled periodically to detect if the subject has fallen down.


MOBISERV FP7 248434

5 WHSU Software package 5.1 Building blocks Figure 14 gives an overview of the WHSU stand-alone collaborating components. This is the

first step before integrating the WHSU with the rest of the MOBISERV components to

support “F08: Encouragement for exercising” and “F06: Response to a fall of the user”.

The idea has been to offer a Graphical User Interface to enable the control of the data logger

as well as the visualization of the data extracted from an activity session and the information

that can be drawn. Java Runtime Edition JRE 1.6.0 update 27 and newer is used for

programming language.

Figure 14: Collaborating components of WHSU

5.2 Blocks specification The following paragraphs describe the operation of each object used in Figure 14 and the

interaction between each block.


MOBISERV FP7 248434

5.3 Device The device is the data logger embedded in the garment. This device has the ability to perform

the operations listed hereunder.

• Bluetooth operations

− Connect.

− Disconnect.

− Start the streaming of the signals.

− Stop the streaming of the signals.

− Start the recording of a session.

− Stop the recording of a session.

− Get the data blocks of the streamed signals.

− Get the energy expenditure

− Detect the fall of the subject

• USB operations

− Connect.

− Disconnect.

− Download the session.

5.4 DeviceManager The device manager is a service that handles the operations coming from the upper layer

(GUI manager). According to the command coming from the application it initiates an

operation on the device, e.g. when it receives a start streaming command, it connects to the

device and start the streaming and signals buffering.

5.5 DownloadManager DownloadManager is a daemon application, which automatically handle the USB connection

and downloads existing sessions in the Data Logger SD memory card.

5.6 SessionManager This is the object in charge of storing the information of the sessions in the data recording

folder in order that user will be informed about the sessions downloaded.

5.7 Viewer GUIManager is the complete application enabling the user to see and analyse the data

acquired during one session.

5.8 Session Storage Session Storage contains the information of the sessions saved in the hard disk of the PC used

for analysing purpose. The data are saved in EDF format and then can be read by

EDFBrowser, a freeware available on the web.

5.9 Integration into Kompaï Robot Session Storage is just a folder containing the session files in EDF format. This is applicable

only when WHSU is used in stand-alone mode. For the integration in the Kompaï Robot, a

database (DataBase) will be created. GUIManager will be replaced by ExerciceManager.

This object will be outside the stack. It will work as a wrapping class written in C# to enable


MOBISERV FP7 248434

the translation of the operations coming from the upper layer to the stack which is written in

Java.

Figure 15: Collaborating components of Exercises when integrated into Kompaï robot


MOBISERV FP7 248434

6 WHSU multi-parameter acquisition system 6.1 Introduction This section details step by step the installation of the whole software package developed for

the Mobiserv project. The second part concerns the use of the Graphical User Interface, that

means:

• real time monitoring (streaming mode),

• daily monitoring (recording mode).

Both modes can be used simultaneously.

The software package used for the Mobiserv project is split into two main parts:

• a daemon running in background which is in charge of downloading new sessions to

the PC,

• a viewer which is providing the user the ability to make operations such as streaming,

recording and viewing online signals (streams) and offline signals (sessions).

The diagram below describes the main architecture of the two parts of the software package

and how they interact with the hardware.

Figure 16: Interaction between the PC software parts and the Mobiserv Data Logger


MOBISERV FP7 248434

6.2 Mobiserv Data Logger Server USB driver used with the data logger has to be installed before doing anything else. The

downloader tool can be downloaded from the following links:

− http://csnej106.csem.ch/sec251/sewOS/#host_software

− http://csnej106.csem.ch/sec251/mobiserv/

Currently, only the Windows7 version is available. The server application runs in background

and downloads new sessions without any action from the user. Double clicking on

MobiservDLServerjar will start it.

Figure 17: Starting Mobiserv Data Logger Server

It is strongly recommended to make a shortcut to this jar file in a more convenient location to

launch it. The launch of the Mobiserv Data Logger Server application provides this message.

Figure 18: Message telling a successful start of the Mobiserv Data Logger Server

Once the data logger is connected via USB, all new sessions in the SD memory card are

downloaded in the session folder without any notification. The idea is to keep this program

running in the silent mode.

The server receives commands from the above application and applies some operations to the

data logger. It offers connection mechanism, streaming and recording control and reading

some specific information such as the energy expenditure and the fall detection events.

These operations are not really seen from the GUI application in the robot; however the

Exercises Manager will call them using an internal TCP communication. The table below

describes the services offered by the server to act on the data logger.


MOBISERV FP7 248434

Table 16: Services offered by the Server to control the data logger

Operation Description

connect Connect to the data logger via the Bluetooth. This method throws an

exception if the device is out of range or already connected

disconnect Disconnect from the data logger and release the Bluetooth

connection

startStreaming Start the streaming of the signals. This method throws an exception

if the streaming cannot start or the device is already streaming

stopStreaming Stop the streaming of the signals

startRecording Start the recording of the signals. This method throws an exception

if the recording cannot start or the device is already recording

stopRecording Stop the recording of the signals

getDataBlocks Get the data blocks containing time stamped samples corresponding

to a portion of the streamed signal

getEnergyExpediture Get the energy expenditure of the last 45 minutes

hasFallen Check whether the subject fell down or not

6.3 Exercises Manager The MRDS service implemented, in the robot, to manage activities and exercises use an

internal TCP communication to the server, which will be seen as a data logger driver. It also

manages the activities and the schedules within the data base. The API of this MRDS service

is described in the table below.

Table 17: Messages and handler of the exercises manager MRDS service

Handler Description

getActionsHandler Gets all valid actions stored in the table 'actions' of the

data base.

Obsolete actions are filtered

addActionHandler Adds an action to the table 'action' of the data base

The response sent to the applicant contains id of the action.

removeActionHandler Removes an action to the data base

The response sent to the applicant contains a Boolean

telling whether the operation succeeded or not.

getScheduleHandler Get the schedule of the action of a given date.

The response containing the schedule is sent to the

applicant

addScheduleItemHandler Adds a schedule item into the 'schedule' table of the data

base

The response sent to the applicant contains id of the

schedule item.

removeScheduleItemHandler Removes a schedule item from the table 'schedule' of the

data base

The response sent to the applicant contains a Boolean

telling whether the operation succeeded or not.


MOBISERV FP7 248434

Handler Description

actionAckHandler The acknowledgement of the action inform about whether

the user is accepting the action or not.

This method insert the action in the table "report" of the

data base

getReportHandler Gets the report of the actions in a day.

The day is specified by the date in the body of the

message.

The actions done and not done, as scheduled, are included

in the report.

The data of the heart rate, the ECG quality index and the

activity classification are inserted in regular data blocks.

connect Establishes automatically the connection to the device

throw Bluetooth

It polls the device forever and checks the connection. It

will try to connect the device continuously.

setEnergyParametersHandler This message is received when the user wants to configure

the parameters of the fall detection and energy expenditure

sendOperationHandler This message is received when the user wants to start, stop

the streaming or the recording or get the device status

The response sent is contains the device status

sendActivityNotification Send a notification to the application telling it is time for

new action. It contains also the energy expenditure during

the last 45 minutes and telling whether the subject has

fallen or not


MOBISERV FP7 248434

7 Electromagnetic compatibility 7.1 Warning This data logger needs special precaution regarding EMC and needs to be installed and put

into service according to the EMC information provided in this chapter. The radiated output

power of this device is well below the FCC radio frequency exposure limits. However, the

antenna used with this transmitter must not be co-located or operated in conjunction with any

other antenna or transmitter to the conditions of the FCC Grant. Bluetooth communication

features:

− Frequency range: 2.40127GHz – 2.48078GHz

− Transmitted power: 5.85dBm EIRP

7.2 Guidance and manufacturer’s declaration – EMC emissions The MOBISERV data logger is intended for use in the electromagnetic environment specified

below. The customer or the user of the Mobiserv data logger should assure that it is used in

such an environment.

Table 18: – Electromagnetic emission –

Emissions test Compliance Electromagnetic environment – guidance

RF emissions

CISPR 11

Group 1 The MOBISERV data logger uses RF energy only

for its internal function. Therefore, its RF emissions

are very low and are not likely to cause any

interference in nearby electronic equipment

RF emissions

CISPR 11

Class B The MOBISERV data logger is suitable for use in

domestic establishments and in establishments

directly connected to a low voltage power supply

network which supplies buildings used for domestic

purposes)

Harmonic emission

IEC 61000-3-2

N/A

Voltage fluctuation/

flicker emissions

IEC 61000-3-3

N/A

7.3 Guidance and manufacturer’s declaration – EMC immunity The MOBISERV data logger is intended for use in the electromagnetic environment specified

below. The customer or the user of the MOBISERV data logger should assure that it is used

in such an environment.


MOBISERV FP7 248434

Table 19: – Electromagnetic immunity –

IMMUNITY test IEC 60601

test level

Compliance

level

Electromagnetic environment

– guidance

Electrostatic

discharge (ESD)

IEC 61000-4-2

± 6 kV contact

± 8 kV air

± 6 kV contact

± 8 kV air

Floors should be wood, concrete

or ceramic tile. If floors are

covered with synthetic material,

the relative humidity should be

at least 30 %.

Electrical fast

transient / burst

IEC 61000-4-4

N/A Mains power quality should be

that of a typical commercial or

hospital environment.

Surge

IEC 61000-4-5



hospital environment

Voltage dips,

short interruption

and voltage

variations on

power supply

lines

IEC61000-4-11



hospital environment. If the user

of the MOBISERV data logger

requires continued operation

during power mains

interruptions, it is recommended

that the MOBISERV data logger

be powered from an

uninterruptible power supply or

a battery.

Power frequency

(50/60 Hz)

magnetic field

IEC 61000-4-8

3 A/m 3 A/m Power frequency magnetic fields

should be at levels characteristic

of a typical location in a typical

commercial or hospital

environment

Portable and mobile RF communications equipment should be used no closer to any part of

the MOBISERV data logger, including cables, than the recommended separation distance

calculated from the equation applicable to the frequency of the transmitter.

Recommended separation

distance

Conducted RF

IEC 61000-4-5

N/A


MOBISERV FP7 248434

IMMUNITY test IEC 60601

test level

Compliance

level

Electromagnetic environment

– guidance

Radiated RF

IEC 61000-4-3

3 V/m

80 MHz to 2.5 GHz

3 V/m From 80MHz and 800MHz

From 800MHz and 2.7MHz

where P is the maximum output

power rating of the transmitter in

watts (W) according to the

transmitter manufacturer and d is

the recommended separation

distance in meters (m).

Field strengths from fixed RF

transmitters, as determined by an

electromagnetic site survey(a)

,

should be less than the

compliance level in each

frequency range.

Interference may occur in the

vicinity of equipment marked

with the following symbol:

NOTE 1: At 80 MHz and 800 MHz, the higher frequency range applies.

NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is

affected by absorption and reflection from structures, objects and people

(a) Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and

land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted

theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an

electromagnetic site survey should be considered. If the measured field strength in the location in which

the MOBISERV data logger is used exceeds the applicable RF compliance level above, the

MOBISERV data logger should be observed to verify normal operation. If abnormal performance is

observed, additional measures may be necessary, such as re-orienting or relocating the MOBISERV

data logger.

7.4 Recommended separation distances The MOBISERV data logger is intended for use in an electromagnetic environment in which

radiated RF disturbances are controlled. The customer or the user of the MOBISERV data

logger can help prevent electromagnetic interference by maintaining a minimum distance

between portable and mobile RF communications equipment (transmitters) and the

MOBISERV data logger as recommended below, according to the maximum output power of

the communications equipment


MOBISERV FP7 248434

Table 20: Recommended separation distances

Rated maximum output power of transmitter

W

Distance separation according to frequency of transmitter m

80 MHz to 800 MHz

800 MHz to 2,5 GHz

0.01 0.12 0.23

0.10 0.38 0.73

1.00 1.20 2.30

10.0 3.80 7.30

100.00 12.00 23.00

For transmitters rated at a maximum output power not listed above, the recommended

separation distance d in meters (m) can be estimated using the equation applicable to the

frequency of the transmitter, where P is the maximum output power rating of the transmitter in

watts (W) according to the transmitter manufacturer.

NOTE 1: At 80 MHz and 800 MHz, the higher frequency range applies.

NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is

affected by absorption and reflection from structures, objects and people.

7.5 Compliant cables and accessories The use of accessories and cables other than those specified or delivery by CSEM as

replacement parts may result in increasing emission or decreasing immunity of the product.

Table 21: List of compliant cables and accessories

Cables and

accessories

Maximum

length Complies with

USB cable 1m CSPR11 ClassB / Group 1 RF electromagnetic disturbance

IEC 61000-4-2 Electrostatic Discharge (ESD)

IEC 61000-4-3 Electromagnetic field radiated by radio-

frequencies

IEC 61000-4-8 Power frequency 50/60Hz magnetic field

Daily Band MOBISERV data logger

Nightly

Pyjamas

MOBISERV data logger

7.6 Essential performances The MOBISERV data logger has neither the sustaining function nor diagnostic of life

supporting function.


MOBISERV FP7 248434

8 Getting started For a correct use of the smart garments, the user should follow the instructions listed below:

1. Moisten thoroughly the electrodes with tap water.

Figure 19: Procedure to wet the electrodes

2. Wear the shirt, the band or the pyjama and plug the connector to the MOBISERV Data

Logger.

Figure 20: Plugging the connector on the garments

3. Switch on the MOBISERV data logger by pressing on button A; the led will start blinking

green that means the datalogger is ready with Bluetooth ON (see Table 9).

Figure 21: Switching on the electronic


MOBISERV FP7 248434

4. Place the MOBISERV data logger inside the pocket on your:

Band T-shirt Pyjama

Figure 22: Placing the electronic inside the band and T-shirt

5. For the MOBISERV pyjama only: Turn on the MOBISERV ANTTM

module by pressing

the On/Off switch. The led will start blinking.

Figure 23: Turning on the ANT module

6. For the MOBISERV pyjama only: Plug the mini ERNI connector in the MOBISERV

ANTTM

module and place it into the pocket on your chest

Figure 24: Plugging the ERNI connector on the pyjama


MOBISERV FP7 248434

9 Maintenance and care 9.1 General guidance for the garment The sensorized garments are realised using natural and synthetic yarns and must be treated as

underwear. Garments have been tested for their endurance regarding number of washings and

time of use. The garment starts to show some malfunctioning after about 50 delicate washing

cycles, probably due to the attack of detergents to metallic fibres; at the same time the fabric

start to wear away.

• Remove all the data loggers from garments before washing them • Washing must be done by hand (no washing machine) in warm water.

• The garment must be washed with a delicate soap (e.g. shampoo) without using softeners.

• Wash separately.

• Do not use bleach.

• Do not tumble dry. • Do not iron.

• Do not pull cables coming out of the vest.

• Do not unplug the connector from the MOBISERV data logger pulling the cables.

9.2 General Guidance for the data logger MOBISERV data logger has to be used with the respect of some basic rules listed below.

− Only perform the procedure described in the user manual.

− Do not disassemble or service your device yourself.

− Protect your device from shocks, hard and sharp objects, extreme heat and prolonged

exposure to direct sunlight.

− Store your device in a clean, dry environment at room temperature.

− Do not place the device where it could be scratched by hard objects.

9.2.1 Cleaning and chemicals

Clean your device with a moist cloth. For stubborn marks, use a mild soap. Do not use

gasoline, cleaning solvents, acetone, alcohol, or insert repellents, paint, or other strong

chemical on your device.

9.3 Disclaimers

9.3.1 User’s responsibility

This device is intended for recreational use only. MOBISERV data logger must not be used

as substitute for obtaining measurements that require professional or laboratory quality

precision.

9.3.2 Warnings

If you have a pacemaker, defibrillator, or other implanted electronic device, you use the MOBISERV data logger transmitter at your own risk. Before using it, we recommend an

exercise test with your MOBISERV data logger. Exercise may include some risk, especially

for those who have been inactive. We strongly advise you to consult your doctor prior to

beginning a regular exercise program.


MOBISERV FP7 248434

9.4 Disposal of device

Please dispose of the device in an appropriate way, treating it as electronic

waste. Do not throw it in the garbage.

Documents

MOBISERV – FP7 248434 An Integrated Intelligent Home