ماژول سنسور ضربان قلب با تشخیص انگشت KY-039/MCU

Descriptions:

The heart rate sensor module KY-039 is an electronic component that is used to measure the heart rate of people. This module is an optical sensor that works based on photo plethysmography (PPG). PPG is a technique in which blood is measured in the vessels of a part of the body (for example, a finger) using light sources and detectors.

This sensor uses an infrared LED (IR) and an optical transistor to detect the pulse of the finger, the LED sends light through the finger and the phototransistor measures the intensity of its reflection from the skin. As the blood moves in the finger veins, the intensity of the light received by the phototransistor changes; These changes are detected and processed by a microcontroller in the heart rate measurement module. The red LED flashes with each pulse.

We chose resistor R1, which has a very high resistance, because most of the light is absorbed through the finger.

Application:

It is used in health monitoring devices, fitness bracelets and other wearables.

It can be used in projects that involve monitoring vital signs or development.

Specifications:

Working voltage: 3.3 - 5 volts

Dimensions: 19x15 mm

Weight: 2 grams

Material: FR4

Use IR LED and phototransistor to detect pulse in fingers

The connector type is pin header

Connecting to Arduino:

Sensor Pin – Connect to Arduino Analog 0 / A0 pin

The + pin of the sensor (the middle pin) is connected to the +5 pin of the Arduino

The S sensor pin is connected to the Arduino GND pin