Heart Rate Pulse Sensor Module
Heart Rate Pulse Sensor Module
Biomedical Sensor Pulse Detection Health Monitoring Projects
The Heart Rate Pulse Sensor Module is a compact biomedical sensor designed to measure human heart rate (beats per minute BPM). It works by detecting blood flow changes in the fingertip or earlobe using an optical method.
This sensor uses the principle of Photoplethysmography, where light is emitted into the skin and the reflected light changes based on the blood volume flowing through the veins.
It is commonly used in health monitoring devices, wearable electronics, and Arduino-based biomedical projects.
Infographic Overview
Basic Specifications
Feature | Details |
Sensor Type | Optical Heart Rate Sensor |
Output Signal | Analog |
Light Source | Green LED |
Measurement | Heart beats per minute (BPM) |
Low Power Consumption | Yes |
Main Components
Component | Description |
LED Light Source | Emits light into the skin |
Photodiode Sensor | Detects reflected light from blood flow |
Signal Conditioning Circuit | Amplifies pulse signal |
Output Pin | Sends analog signal to microcontroller |
Pin Configuration
Pin | Function | |
VCC | Power supply (3.3V5V) | Analog pulse output |
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Working Principle
The sensor measures heart rate using optical blood flow detection.
Step-by-Step Operation
1 The LED emits light into the fingertip.2 Blood flow changes with each heartbeat.3 The photodiode detects variations in reflected light.4 These changes create a pulse waveform signal.5 A microcontroller calculates heart rate in BPM.
Sensor Structure
Heart Rate Sensor Module LED Light Fingertip >Health monitoring systems Biomedical electronics projects Exercise monitoring devices
Compatible Microcontrollers
The module can easily connect to:
Arduino Uno
Arduino Nano
ESP32
Raspberry Pi
Typical Heart Rate Ranges
Condition | BPM |
Resting Adult | 60 100 BPM |
Athletes | 40 60 BPM |
Exercise | 100 160 BPM |
Advantages
Easy to use with microcontrollers Small and lightweight module Low power consumption Real-time pulse monitoring Ideal for health and IoT projects
Limitationsl-grade diagnostic device
Example DIY Project
Arduino Heart Rate Monitor
Components
Heart Rate Pulse Sensor Module
Arduino Uno
OLED or LCD display
Working
Sensor detects pulse signal Arduino processes the waveform Display shows