Heartbeat and Temperatire Monitoring System

7/29/2019 Heartbeat and Temperatire Monitoring System

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A PRESENTATION

ON DIGITAL HEART BEAT &TEMPERATURE MONITOR

SUBMITTED BY:-Mohit Kumar

Rakesh Kumar

Manoj Kumar

Vikas Kumar dev

(ECE Final year)

G.B.Pant.Engg.College Pauri Garhwal


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CONTENTS

Introduction

Component List

AT89C2051

Operational Amplifier Display

HT12A/HT12E

Thermistor IC DS1820

Block Diagram of Measuring Device

Transmitting Circuit

Receiving Circuit Conclusion

Scope for Future Work

Some References


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INTRODUCTION

This project describes the design of a simple, low-cost microcontrollerbased heart rate & room temperature measuring device with LCD output.Heart rate of the subject is measured from the thumb finger using IRD(Infra Red Device sensors and the rate is then averaged and displayed on atext based LCD.)

Project has been enhanced with the temperature detecting componentsDS1820 manufactured by DALLAS. The component is used to detect theroom temperature & transmit it to the receiver LCD screen.

The device alarms when the heart beat & the room temperature exceed theprovided threshold value. This threshold value is defined by theprogrammer at the time of programmed the controller 89C2051.Thethreshold value given for the project is as 20 to 120 pulse per minute forheart beat indication & 0 to 55 C .


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COMPONENT LIST

8-bit Microcontroller (89c2051).

Operation Amplifier (LM 358).

Encoder IC (HT12E).

16x2 LCD.

Buzzer.

ThermistorIC (DS1820).

Resistors, Light Emitting Diode.


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MICROCONTROLLER(AT89C2051)

The AT89C2051 is a low-voltage, high-performance CMOS 8-bitmicrocomputer with 4K bytes of Flash programmable and erasable read-

only memory (PEROM).

The AT89C2051 provides the following standard features: 2K bytes of

Flash, 128 bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a fivevector two-level interrupt architecture, a full duplex serial port, a

precision analog comparator, on-chip oscillator and clock circuitry.

Supports two software selectable power saving modes.

1. The Idle Mode stops the CPU while allowing the RAM, timer/counters,serial port and interrupt system to continue functioning.

2. The power-down mode saves the RAM contents but freezes the

oscillator disabling all other chip functions until the next hardware reset.


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OPERATION AMPLIFIER (LM 358)

The LM358 series consists of two

independent, high gain ,internally frequency

compensated operational amplifiers which

were designed specifically to operate from a

single power supply over a wide range of

voltages

Features

Large dc voltage gain: 100 dB

Wide bandwidth (unity gain): 1

MHz(temperature compensated) Very low supply current drain (500 A)

essentially independent of supply voltage

Low input offset voltage: 2 mV


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LIQUID CRYSTAL DISPLAY (LCD)

A liquid crystal display (LCD) is an electro-optical amplitude modulatorrealized as a thin, flat display device made up of any number of color or

monochrome pixels arrayed In front of a light source or reflector.

Each pixel of an LCD typically consists of a layer of molecules aligned

between two transparent electrodes, and two polarizing filters, the axes of

transmission of which are (in most of the cases) perpendicular to each

other. With no liquid crystal between the polarizing filters, light passing

through the first filter would be blocked by the second (crossed) polarizer.


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HT12A/HT12E The 212 encoders are a series of CMOS LSIs for remote control system

applications. They are capable of encoding information which consists of Naddress bits and 12_N data bits. Each address/data input can be set to one

of the two logic states. The programmed addresses/ data are transmitted

together with the header bits via an RF or an infrared transmission medium

upon receipt of a trigger signal. The HT12A additionally provides a 38kHz

carrier for infrared systems. Feature

Operating voltage

2.4V~5V for the HT12A

3.4V~12V for the HT12E

Low power and high noise immunity CMOS technology

Low standby current: 0.1_A (typ.) at VDD=5V

HT12A with a 38kHz carrier for infrared

Transmission medium


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THERMISTOR IC DS1820

The thermistor is , as the name implies a temperature sensitive resister :That is , its terminal resistance is related to its body temperature . It is not a

junction device and is constructed of Ge, Si , or a mixture of oxide of

cobalt, nickel etc. The compound employed will determine the device has

a positive or a negative temperature coefficient.

Feature

Power supply range is 3.0V to 5.5V

Measures temperatures from55C to +125C (67F to +257F)

accuracy from10C to +85C

Alarm search command identifies and addresses devices whose

temperature is outside of programmed limits (temp. alarm

condition).


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BLOCK DIAGRAM OF MEASURING

DEVICE


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HEART BEAT & TEMPERATURE

MONITOR WITH A TRANSMITTING

CIRCUIT


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HARDWARE IMPLEMENTATION OF

TRANSMITTING CIRCUIT


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RECEIVING CIRCUIT


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HARDWARE IMPLEMENTATION OF

RECEIVING CIRCUIT


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CONCLUSION

Lists of Accomplishments Include :

Acquiring biological signal

Adequately amplifying biological signal

ADC conversion of analog signal

Semi functional heart rate counter

Functional notification and alarm system

Low cost thermistor for measuring room temperature.

LCD heart rate display

Use of low power components for battery operation


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SCOPE FOR FUTURE WORK

The device can be improved in certain areas as listed below:

A graphical LCD can be used to display a graph of the change of heart

rate over time

Sound can be added to the device so that a sound is output each time apulse is received.

The maximum and minimum heart rates over a period of time can be

displayed.

Serial output can be attached to the device so that the heart rates can be

sent to a PC for further online or offline analysis.


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REFERENCES Dr. A.K. GAUTAM Antenna and Wave propogation S.K Kataria &

Sons Publishers, Fourth Edition 2008 09.

Dr.S.K. SahwaneyElectronicsMeasurement and instrument.

Robert L. Boylestad ElectronicsDevice and Circuit Theory by

Communication System by: B.P. Lathi. S. Edwards., Heart rate MonitorBook, Leisure systems international,

Dec. 1993.

M. Malik and A. J. Camm., Heart Rate Variability., Futura Publishing

Co. Inc., sept. 1995.

J. R. Hampton., The ECG In Practice., Churchill Livingstone., Mar.2003.

A. R. Houghton and D. Gray., making sense of the ECG., Hodder

Arnold Publishing.m 2003.


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Continue..

Forerunner 201/301 User Guide,

Web site: http://www.grmin.com

Pulsar heart rate monitors,

Web site: http://www.heartratemonitor.co.uk

Cosy Communications

Web site: http://cosycommunications.com

MicrochipWeb site: http://microchip.com

PROTON+ User Guide,

Web site: http://www.crownhill.co.uk
http://www.grmin.com/http://microchip.com/http://www.crownhill.co.uk/http://www.crownhill.co.uk/http://microchip.com/http://www.grmin.com/


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Continue

American Heart Association. CardiovascularDisease Statistics [OnlineDocument], 2008 [Cited 9 Dec 2008], Available HTTP:.

Centers for Disease Control and Prevention. Heart Disease Facts andStatistics [Online Document], 10 Sept 2008 [Cited 4 Dec 2008],Available HTTP: < http://www.cdc.gov/heartdisease/statistics.htm >.

R.S. Khandpur. Biomedical Instrumentation: Technology andApplications, McGraw-Hill Companies, Inc., 2005.

V. Virgilio. Prototype of a Portable ECG Monitoring System (HolterMonitor) with Real Time Detection of Beat Abnormalities,Master thesis,Aalborg University, 2006.

J. Hailong, M. Bing. Design of Holter ECG System Based on MSP430and USB Technology IEEE (2007) 976-979.
http://www.cdc.gov/heartdisease/statistics.htmhttp://www.cdc.gov/heartdisease/statistics.htmhttp://www.cdc.gov/heartdisease/statistics.htmhttp://www.cdc.gov/heartdisease/statistics.htmhttp://www.cdc.gov/heartdisease/statistics.htmhttp://www.cdc.gov/heartdisease/statistics.htmhttp://www.cdc.gov/heartdisease/statistics.htmhttp://www.cdc.gov/heartdisease/statistics.htmhttp://www.cdc.gov/heartdisease/statistics.htmhttp://www.cdc.gov/heartdisease/statistics.htm


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Thank You.

Heartbeat and Temperatire Monitoring System

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