The Heartbeat Sensor (Heart-Shaped) is a biometric module designed to detect pulse rate using an optical sensor. It provides real-time heart rate monitoring and is ideal for health tracking, wearable devices, and biofeedback applications.
Heart Beat Sensor Heart Shaped
A heart rate sensor is a device designed to measure and monitor the heart rate or pulse, which refers to the number of times the heart beats per minute (BPM). These sensors are commonly used in fitness trackers, health monitoring devices, and medical applications to provide real-time information about a person's cardiovascular condition.
How a Heart Rate Sensor Works:
Most heart rate sensors used in consumer electronics are optical and work based on photoplethysmography (PPG):
Light Emission: The sensor emits light, usually green LEDs, which penetrates the skin.
Light Absorption: Blood absorbs the light more than the surrounding tissue. As your heart pumps, the volume of blood in the vessels changes, and this causes fluctuations in the amount of light absorbed.
Signal Processing: The sensor detects changes in the reflected light due to these fluctuations and processes the data to calculate your heart rate (measured in beats per minute, or BPM).
Features of a Heart Rate Sensor:
PPG-based Measurement: Most common type for wearables like smartwatches, wristbands, and fitness devices.
Non-invasive: Reads the heart rate without needing to break the skin or draw blood.
Wearable-friendly: Designed to be comfortable and easy to wear, often built into wristbands or chest straps.
Specifications:
Operating Voltage: 3.3V or 5V
Supply Current: Usually low, around 5mA to 20mA, depending on the sensor.
Output Type: Analog or digital depending on the model.
Communication Protocols:
Analog output (for basic sensors like Pulse Sensor)
I2C communication (for digital sensors like MAX30100/02)
Pin Configuration (for a typical heart rate sensor):
VCC: Connect to a 3.3V or 5V power supply.
GND: Connect to ground.
SCL/SDA (for digital sensors): For I2C communication.
Analog Output: For analog sensors, provides a varying voltage proportional to the heart rate signal.
Applications:
Wearable Devices: Many heart rate sensors are embedded into smartwatches (like the Apple Watch, Fitbit, etc.), wristbands, and health-monitoring jewelry.
Fitness Trackers: Used to monitor heart rate during workouts or everyday activities.
Health Monitoring: Helpful for continuous heart rate tracking for medical purposes like detecting arrhythmias or other heart conditions.