User Manual

MEDICAL WIRELESS SENSOR NETWORK FOR REMOTE PATIENT MONITORING

1

1. INTRODUCTION Medical Wireless sensor networks enable vital sign monitoring of a patient by the medical staff

or doctors over a remote location. This project enables the measurement of ECG, Blood

Pressure and Pulse rate by employing inexpensive and non-cumbersome vital-sign monitors

which reports the data to a remotely located host PC whereby a database of the patients’

history is maintained.

A communication link exists between wearable medical sensors and application running on the

host PC. The medical sensors are integrated with the wireless modules (Micaz mote) through a

microcontroller circuitry (PIC18F452 programmed in MikroC) and data acquisition board. Micaz

motes have been programmed through TinyOS in nesC dialect whereby data packet format is

defined and configuration related to transmission and reception of data is done. The

application running on the host PC (MATLAB) accepts data from the TCP server existing

between the host PC and Ethernet Gateway. Data is analyzed at the application whereby

database is maintained and updated on the website at regular intervals.

The analysis and data presented at the host PC was verified for accuracy and validity by medical

specialists from the Federal Services Hospital, Islamabad.

2. WHAT IS INCLUDED IN THE PACKAGE The following devices/equipment is included in the package for deployment of Wireless sensor

network for patient monitoring:

ITEM Quantity

A & D , UA-767PC ---BP Sensor 1

Vernier EKG Sensor 1

MDA 100 --- Data Acquisition Board 1

Interface Circuitry Board 1

MICAZ Mote 2

MIB 600 1

Ethernet Cable 1

CD including Application Software 1


2

The Devices/equipment included is shown below:

1. A&D UA767-PC 2. Vernier EKG Sensor

3. Data Acquisition Board 4. Hardware Interface Circuitry Board

5. Wireless Transceiver 6. Gateway Board

Figure 1 A&D UA767 PC Blood Pressure Monitor

Figure 2 Vernier EKG BTA

Figure 3 MDA100CB

Figure 5 MPR2400CB Micaz Mote Figure 6 MIB600 CA Ethernet Gateway

Figure 4 Interface Circuit Board


3

3. KEY FEATURES 1. Systolic/Diastolic Blood Pressure, Pulse Rate and ECG Measurement

2. Remote Patient Monitoring

3. Non-cumbersome Patient Monitoring System

4. Maintenance of Long Term Database of Patients Data

5. Access and Prescription facility for registered doctors over the internet

4. HARDWARE INSTALLATION

4.1 INTERCONNECTION DIAGRAM

Figure 7 Hardware Connections on Patient's End

Figure 8 Hardware Connections at Remote Monitoring End

BP and EKG Sensors

Interface Circuitry

Data Acquisition

Board Micaz Mote

Base Station Micaz Mote

MIB600CA Ethernet Gateway

RJ-45 LAN Cable

Host PC


4

4.2 HARDWARE REQUIREMENTS

1. Electrodes with Gel

2. Power Supply of 3V for MICAz Mote

3. Power Supply of 5V for Medical Sensors and Hardware Circuitry

4. Intel Pentium 4 PC with a LAN port

5. Internet Connectivity with PC

4.3 INSTALLATION STEPS

The whole process of establishing the interconnection of system requires that equipment used

in the system is connected correctly. Following phases will demonstrate the steps of

interconnection of devices used in the system:

1. Connection of ECG Sensor to the patient

2. Connection of BP Sensor to the patient

3. Interface Circuitry and Sensors Connection

4. Connection of Interface Circuitry to MICAZ Mote

5. BASE STATION connection with PC

Details of the above mentioned steps are as follows:

4.3.1 CONNECTION OF ECG SENSOR TO THE PATIENT

Following are the steps to connect ECG Sensor to the patient:

a. Take out Vernier EKG Sensor from the pack

b. Three electrodes with different Colors Clips are visible

c. Attach the Black Clip Electrode on patient’s Right Lower arm

d. Attach the Green Clip Electrode on patient’s Right Upper arm

e. Attach the RED Clip Electrode on patient’s Left Upper arm

f. Plug the Power cable of EKG Sensor into the Power Supply

Figure 9 Electrode Connections of ECG Sensor


5

4.3.2 CONNECTION OF BP SENSOR TO THE PATIENT.

Following are the steps to connect BP sensor to the Patient:

a. Take out the A&D UA-767PC from the Pack

b. Put 4 – AA Cells into the battery box at the back

c. Attach the arm cuff valve with the BP sensor

d. Wrap the Arm Cuff around patient’s right upper arm

e. Make sure it is tightly wrapped around

Figure 10 Arm Cuff Connection on Patient

Figure 11 Air Cuff Connection with BP Sensor

4.3.3 INTERFACE CIRCUITRY AND SENSORS CONNECTION

Following steps need to be made to make a connection between Hardware Interface and

Medical sensor:

a. Take out the Hardware Interface Circuit from the pack

b. Plug the Power cable of Circuit into Power Supply

c. Attach the Two Pins Wire connection coming from Circuit to the EKG Sensor

d. Attach the Three Pins Wire connection coming from circuit to the BP Sensor

4.4.4 CONNECTION OF INTERFACE CIRCUITRY TO MICAZ MOTE

Follow the steps below to make connection between Micaz Mote and Interface Circuitry:


6

a. Take out the MICAZ Mote from the Pack

b. Make sure the power switch is initially turned as Power off

c. Insert two AA cells into the Back jacket of Micaz mote

d. Attach the MDA 100 board on top of MICAZ 51 pin connector

e. Attach the four pins wire coming from Interface Circuitry to the four Pin jacket on

top of MDA 100 board

f. Turn ON the Power Switch at MICAZ mote

4.4.5 BASE STATION CONNECTION WITH PC

Follow the steps below to make connection between PC and Base Station:

a. Take out the MIB600 Board from the pack

b. Attach the second Micaz mote to the 51 connector available on MIB600 board

c. Make sure that Power Switch is turned off and no cells are placed into the Micaz

jacket

d. Connect the LAN Cable’s one end to the RJ-45 Port on MIB600 and the other end to

the PC

e. Plug the Power cable into the Power Supply

5. GETTING STARTED WITH APPLICATION

5.1 SYSTEM REQUIREMENTS

Following are the system requirements for the optimum running of the application:

1. Modem Internet connectivity of 56 Kbps or more.

2. RAM – 1 GB (Recommended)

3. Disk Space – 1 GB

4. Processor – Intel x86 Processor

5. Windows XP, Vista, 7

5.2 STARTING APPLICATION

Follow the steps below to start the MATLAB GUI application on your system:

1. Install the MATLAB

2. Copy the M-Files from CD into the root directory of MATLAB

3. Open MATLAB

4. Double Click on the M-File “Gui_final.m”

5. Click the play button on top of editor’s window

6. The GUI application is launched


7

Figure 12 Start GUI using this button

5.3 NAVIGATION AND FEATURES

This portion describes each button and menu of the application. The Application mainly

comprises of two portions:

1. Patient Registration and Selection.

2. Live Readings and Database.

Both of the above portions are explained as below:

5.3.1 PATIENT REGISTRATION AND SELECTION

The Screen below shows different panels included, when the application is first launched:

Figure 13 GUI Window showing Patient Registration and Patient Selection Panels


8

It has three major purposes:

a. New Patient

New patient panel provides with number of patient related details forms, which

are needed to be filled whenever a new patient is registered into the system

b. Patient Search

Search panel gives a freedom to search the database of patients for some

particular patient. Patient search can be conducted on the basis of Name,

patient ID or Node Address

c. Patient Select

Patient Select panels shows all the available patients in the database, with their

names and patient ID. To view Details of any particular patient, scroll down to his

name, click on his name and push the Select button

5.3.2 LIVE READINGS AND DATABASE.

The Screen shown below Shows the information related to some particular patient:

Figure 14 MATLAB GUI showing various panels

5.3.2.1 INFORMATION PANEL

This panel includes the details of patient. The details of patient’s 1st name, last name, age,

patient ID, node address and contact number are shown in a table in this panel.

This table also can show the patient Systolic Pressure, Diastolic Pressure, Pulse rate and there

abnormalities in terms of ‘Low’ or ‘High’ for some selected date.


9

Figure 15 Information Panel

5.3.2.2 PLOTS PANEL

There are three different plots shown for each patient. This includes:

i. Systolic and Diastolic Pressure Plot

ii. Heart Rate Plot

iii. ECG Plot

Figure 16 Plot Panel


10

5.3.2.3 EVENTS PANEL

The Events panel has two portions. One is for Blood Pressure and Pulse rate, and Second for

ECG. Both the portions shows all the dates and times, at which the readings were taken for this

particular patient. For any selected date and time, the Plot panel discussed above shows the

plot for that particular date and time.

Figure 17 Events Panel

5.3.2.4 LIVE READING PANEL

Live reading Panel gives the freedom to take real time reading of the patient at that very

moment. To take Live Blood Pressure and Pulse rate reading press the BP Button. To take the

ECG readings, Press the ECG button in live reading panel.

Figure 18 Live Reading Panel


11

5.3.2.5 WEB UPLOADS PANEL

At any time, data can be uploaded on the Wireless sensor network Website by pressing the

upload button in Web upload panel. This button makes a connection with the website and

uploads all data available for particular patient on the website.

This panel also shows the prescriptions issued by the doctor regarding the condition of the

patient. At any time doctor can make a prescription on the website related the data he obtains

and that prescription can be downloaded in the application by pressing the prescription button.

Figure 19 Web Uploads Panel

5.3.2.5 STATUS PANEL

The Status panel shows the current status of the application. Pressing any button activates

some process, whose status can be seen in this panel.

Figure 20 Status Panel


12

TROUBLE-SHOOTING

1. Micaz Mote’s RED LED not blinking

Replace the cells

Reset the interface circuitry using reset button of the Circuit Board

If the problem persist get the Micaz mote reinstalled

2. MIB600CA not working

Check the power supply (Adapter)

Check the Ethernet cable (RJ-45), replace with new straight cable

Execute Lantronix Device Installer to check if IP is properly assigned

3. GUI not starting

Check whether Root Directory is properly set to the directory containing copied GUI file

Clear all existing commands and memory buffers of MATLAB by entering “clear all” and

“close all”

Restart MATLAB and re-run MATLAB GUI file provided with the setup

4. Blood Pressure readings not being transmitted

Check whether arm cuff is properly connected to Blood Pressure sensor

Replace battery cells of the Blood Pressure monitor

Check if the connector from blood pressure sensor to interface circuit is properly fixed

5. ECG Sensor readings not being transmitted working

Check USB power cable of the ECG sensor

Check if connector from ECG sensor to interface circuit is properly fixed

6. Website not responding

Check internet connection

Check if the doctor or medical practitioner is registered in the system

If there is communication problem between WEBSITE and MATLAB check that there are

no proxies


13

TABLE OF CONTENTS

1. INTRODUCTION ......................................................................................................................................... 1

2. WHAT IS INCLUDED IN THE PACKAGE ....................................................................................................... 1

3. KEY FEATURES ........................................................................................................................................... 3

4. HARDWARE INSTALLATION ....................................................................................................................... 3

4.1 INTERCONNECTION DIAGRAM ............................................................................................................ 3

4.2 HARDWARE REQUIREMENTS .............................................................................................................. 4

4.3 INSTALLATION STEPS........................................................................................................................... 4

4.3.1 CONNECTION OF ECG SENSOR TO THE PATIENT ......................................................................... 4

4.3.2 CONNECTION OF BP SENSOR TO THE PATIENT............................................................................ 5

4.3.3 INTERFACE CIRCUITRY AND SENSORS CONNECTION ................................................................... 5

4.4.4 CONNECTION OF INTERFACE CIRCUITRY TO MICAZ MOTE ......................................................... 5

4.4.5 BASE STATION CONNECTION WITH PC ........................................................................................ 6

5. GETTING STARTED WITH APPLICATION .................................................................................................... 6

5.1 SYSTEM REQUIREMENTS..................................................................................................................... 6

5.2 STARTING APPLICATION ...................................................................................................................... 6

5.3 NAVIGATION AND FEATURES .............................................................................................................. 7

5.3.1 PATIENT REGISTRATION AND SELECTION .................................................................................... 7

5.3.2 LIVE READINGS AND DATABASE................................................................................................... 8

TROUBLE-SHOOTING .................................................................................................................................. 12

User Manual

Documents

Transcript of User Manual