Heart beat monitor system PPT
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This document summarizes a minor project on a heart beat monitoring system. It discusses using a pulse oximetry sensor with an LED and LDR to detect heartbeats and interface it with a microcontroller and LCD to display the real-time heart rate. The system steps down household AC voltage to power the circuit and uses a voltage regulator to provide stable 5V power. It was developed using KEIL software and aims to provide a low-cost solution for heart rate monitoring, with potential applications in healthcare, fitness training, and telemedicine to remotely monitor multiple patients.
Heart beat monitor system PPT
- 1. RISHIRAJ INSTITUTE OF TECHNOLOGY, INDORE MINOR PROJECT ON HEART BEAT MONITORING SYSTEM SUBMITTED BY ANAND DWIVEDI
- 2. HEART BEAT MONITOR A heart rate monitor is a personal monitoring device which allows one to measure his or her heart rate in real time or record the heart rate for later study. It is largely used by performers of various types of physical exercise. Fig. 1 Wrist band for calculating heart beat Widely used in hospitals for checking the health of patient(s)
- 3. Why Monitoring……? More than 2 million people are at high risk of having heart attack. It would be helpful if there was a way for these people to monitor their heart. So we have a problem. That is the way our project focuses on how we can utilize this problem and find a solution.
- 4. Measurement of Heart rate • Stethoscope --inaccurate • Electrocardiogram – costly & not user friendly 4
- 5. Average Heart Rate Age Newborn 140 7 years 85 – 90 14 years 80 – 85 Adult 5 Average Heart Rate 70 – 80
- 6. Microcontroller and why Microcontroller not • A microcontroller is a single-chip microcomputer Microprocessor? which contains RAM , ROM , CPU , I/O ports , ADC • • • • • 6 and other peripherals. It has fixed amount of RAM , ROM , I/O ports. It is also called embedded microcontroller because it is designed for embedded systems performing specific tasks only. Microprocessor only has CPU , ALU, stack pointer, program counter and other registers ,clock timing circuit. Microprocessor does not have RAM, ROM and I/O ports It requires large space and it’s cost is higher as compared to microcontroller.
- 7. What we have done? ? ? • We , in this project are measuring the heart beat using the pulse oximetry logic. • The timer we have set for counting the heart beat is 30s. • There is a set point we can decide, after 30 s the heartbeat would be shown on the LCD. 7
- 8. Software we used ? ? ? • KEIL uVision3 IDE • SPI flash programmer 8
- 9. Top view of our project 9
- 10. Hardware implementation • • • • • • • • • 10 Transformer Full wave rectifier 7805 voltage regulator Buzzer LM324 Potentiometer LED + LDR used as sensor LCD Circuit diagram of project
- 11. 11
- 12. HOW ? ? ? • Transformer steps down 220V to 9-09V. • Full wave rectifier converts the ac into dc. • 7805 voltage regulator regulates the voltage to 5V, which is the operating voltage of our microcontroller. • LCD is interfaced with microcontroller. • LED - LDR sensor is used to count the Pulses. It consists of a red LED and 12 LDR .
- 13. What is happening on-board ? • Transformer is making the ac voltage 220 volt to step down to 9-0-9 volt ac. • Full wave rectifier is rectifying that voltage to get larger average dc voltage. • 7805 is regulating the output voltage to 5v. • Sensor consist of red LED and LDR is generating the output signal inversely proportional to absorption of red light caused by blood. • Trans-impedence amplifier is converting current signal to voltage signal ,amplifying signal and change in signal and also filtering the signal also. 13
- 14. LED – LDR sensor LED 14 LDR
- 15. PCB back side diagram 15
- 16. Board back side photo 16
- 17. Applications 17 • Have become a widely used training aid for a variety of sports. • Hospitals / Dispensaries • Better and accurate method of measuring heart beat. • At homes • A set point can help in determining whether a person is healthy or not checking his/her heart beat and comparing with set point.
- 18. • In-accurate method of calculating heartbeat. • Logic used in very simple. Therefore, results may vary as for a sophisticated instrument for the same purpose 18
- 19. • EEG, ECG and other health parameters can also be monitored. • Continuous monitoring and future diagnosis can be performed via the same system (TELEMEDICINE). • More than a single patient at different places can be monitored using single system. 19
- 20. Thank you