Edaqsys Prashant
-
Upload
sankar-padmanabhan -
Category
Documents
-
view
220 -
download
0
Transcript of Edaqsys Prashant
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
ECG Data Acquisition and Monitoring SystemEDAQsys
Prashant AgrawalArundhati JanaProf. Ajit Pal
Department of Computer Science & EngineeringIndian Institute of Technology Kharagpur
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
2
Outline of presentation
IntroductionMotivationScopeDescriptionPresent statusRoadmap aheadConclusion
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
3
Introduction
Introduction
Motivation
Scope
Description
Present Status
Roadmap Ahead
Conclusion
EDAQsysIt is a hardware and software system to enable integration of analog ECG machines with the Telemedicine Technology.
Hardware SubsystemAcquires ECG signalsDisplays them locally Can transmit them to a local or remote computer
Software SubsystemStores the data transmitted by the hardwareThe stored data can be later retrieved and displayed graphically
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
4
Motivation
Introduction
Motivation
Scope
Description
Present Status
Roadmap Ahead
Conclusion
Contribute to improve the health scenario in India
Our 1 billion population is predominantly rural and widely distributed in distant geographical locations
Inadequate health and medical facilitiesWide disparity in terms of
♦ Health care infrastructure♦ Facility♦ Funds♦ Manpower
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
5
Motivation
Introduction
Motivation
Scope
Description
Present Status
Roadmap Ahead
Conclusion
Adaptation of telemedicine technology is a viable solution
ECG monitoring system is a very commonly used clinical system
♦ It can be used for Tele-diagnostics♦ Analog ECG machines are widely used in rural
areasThe proposed system is to create an interface to integrate analog ECG machines with the Telemedicine technology.
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
6
Scope
Introduction
Motivation
Scope
Description
Present Status
Roadmap Ahead
Conclusion
EDAQsys will be a handheld deviceIt’s use is targeted in rural and interior areas
It can be used with little training♦ The use and operation of the system is very
easyIt bridges the physical distance between patient and doctor or specialist
♦ ECG data can be acquired locally and transmitted to some larger hospital or center
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
7
Scope
Introduction
Motivation
Scope
Description
Present Status
Roadmap Ahead
Conclusion
It is a handy equipment♦ Can be easily carried anywhere♦ Operates on battery and requires no power
supplyIt will be a low-cost equipment
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
8
Description
Introduction
Motivation
Scope
Description
Present Status
Roadmap Ahead
Conclusion
EDAQsys consists of two subsystemsHardware subsystemSoftware subsystem
ECG Signal To PC
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
9
Hardware Subsystem
Introduction
Motivation
Scope
Objectives
Description
Hardware Subsystem
Software Subsystem
Present Status
Roadmap Ahead
Conclusion
FunctionalitiesSignal Acquisition
We are acquiring signals from a standard ECG machineSampling Rate – 300 samples/ secEDAQsys acquires 4 cycles of the ECG signal (1024 samples)
Signal Storage & DisplayThe acquired signal is stored in a RAM on the systemData from RAM is displayed on a CRO
♦ In future, graphical LCD will be used
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
10
Hardware Subsystem
Introduction
Motivation
Scope
Objectives
Description
Hardware Subsystem
Software Subsystem
Present Status
Roadmap Ahead
Conclusion
Display can be changed to freeze mode for♦ Close observation♦ Transmission of data stored in RAM to PC
Signal TransmissionSerial port communication (RS232C) is usedPatient Id, Channel No and 1024 bytes of data is transmitted
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
11
Hardware Subsystem Block Diagram
Introduction
Motivation
Scope
Objectives
Description
Hardware Subsystem
Software Subsystem
Present Status
Roadmap Ahead
Conclusion
CPU
LCD
Counter
RAM
A to DConverter
D to AConverterBUFFER
Keyboard
ECG Signal Input
To Display
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
12
Hardware Subsystem – State Transition Diagram
Introduction
Motivation
Scope
Objectives
Description
Hardware Subsystem
Software Subsystem
Present Status
Roadmap Ahead
Conclusion
State 0Initializations
State 1User Input
State 2Wait Start
ConversionInput
State 3Start ADC
Start Timer
State 4Wait TimerOverflow
State 7Transmit
SC=0
SC=1
TO=0TO=1Esc=0
Esc=1
Esc=1 Esc=0
Esc=1State 5
Freeze Mode
State 8RAM Write
Start Counter
State 6ReloadCounter
TxD_Over=0
TO=0
TO=1
TxD=1TxD_Over=1
Freeze=1
Freeze=0Esc=1
Esc=1
Esc=0
Esc=1
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
13
Software Subsystem
FunctionalitiesReceive & Store Data
The software receives data transmitted by the hardwareIt attaches date and time stamp to the data receivedIt stores the data in a database
Introduction
Motivation
Scope
Objectives
Description
Hardware Subsystem
Software Subsystem
Present Status
Roadmap Ahead
Conclusion
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
14
Software Subsystem
Display DataData can be retrieved from the database by specifying
♦ Patient Id♦ Date♦ Time♦ Channel No
Retrieved data is displayed graphically
Introduction
Motivation
Scope
Objectives
Description
Hardware Subsystem
Software Subsystem
Present Status
Roadmap Ahead
Conclusion
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
15
Software Subsystem – DFD Level 0
Introduction
Motivation
Scope
Objectives
Description
Hardware Subsystem
Software Subsystem
Present Status
Roadmap Ahead
Conclusion
HardwareSubsystem
User
SoftwareSubsystem
1.0
Medical Data1
Graphical Display
Login Information
User
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
16
Software Subsystem – DFD Level 1
Introduction
Motivation
Scope
Objectives
Description
Hardware Subsystem
Software Subsystem
Present Status
Roadmap Ahead
Conclusion
HardwareSubsystem
User
ReceiveData1.3
Medical Data1
Graphical Display
Login Information
VerifyLogin Info
1.1
RequestHandler
1.2
DisplayData1.4
User
Login Id
MedicDB MedicDB
MedicDB
Medical Data2Receive Data Request
Display Data Request
Medical Data2Patient Details
Login Information
Verification OK
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
17
Present Status
Introduction
Motivation
Scope
Objectives
Description
Present Status
Roadmap Ahead
Conclusion
A microcontroller based implementation is ready. Currently
Hardware subsystem of EDAQsysAcquires signalDisplays signal locally on a CROTransmits signal to a local PC
Software subsystem of EDAQsysReceives & stores signalDisplays graphically the stored signal
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
18
Present Status- Hardware Subsystem
Introduction
Motivation
Scope
Objectives
Description
Present Status
Roadmap Ahead
Conclusion
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
19
Present Status- Hardware Subsystem
Introduction
Motivation
Scope
Objectives
Description
Present Status
Roadmap Ahead
Conclusion
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
20
Present Status- Software Screenshot
Introduction
Motivation
Scope
Objectives
Description
Present Status
Roadmap Ahead
Conclusion
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
21
Present Status- Software Screenshot
Introduction
Motivation
Scope
Objectives
Description
Present Status
Roadmap Ahead
Conclusion
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
22
Present Status- Software Screenshot
Introduction
Motivation
Scope
Objectives
Description
Present Status
Roadmap Ahead
Conclusion
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
23
Present Status- Software Screenshot
Introduction
Motivation
Scope
Objectives
Description
Present Status
Roadmap Ahead
Conclusion
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
24
Roadmap Ahead
Introduction
Motivation
Scope
Objectives
Description
Present Status
Roadmap Ahead
Conclusion
FPGA based implementation of the basic systemUse of a graphical LCD instead of CRO for displayTransmission of signal to a remote PC using a dial up modemOptical isolation of power supply and data communication interfaceDevelopment of analog subsystem to replace the analog ECG machine
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
25
Roadmap Ahead
Introduction
Motivation
Scope
Objectives
Description
Present Status
Roadmap Ahead
Conclusion
Acquisition of signals other than ECGASIC based implementation of EDAQsys
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
26
Conclusion
Introduction
Motivation
Scope
Objectives
Description
Present Status
Roadmap Ahead
Conclusion
Indian medical and healthcare facilities have the following constraints
Wide disparity in the availabilityLack of trained personals and doctors in rural/ interior areasLack of fund
EDAQsys addresses all the above problemsIt is a mobile deviceIt’s handling and operation is very easy and simpleIt is a low-cost system
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
27
Conclusion
Introduction
Motivation
Scope
Objectives
Description
Present Status
Roadmap Ahead
Conclusion
EDAQsys is a commercially viable projectThis work is being supported by a grant from Ministry of Human Resources Development, Government of India.
March 1, 2005 Department of Computer Science & Engineering | IIT Kharagpur
EDAQsys
28
Thank You