Difference between revisions of "Sensor-Pulse"

Sensor-Pulse

The product number of Sensor-Pulse is: MSDI31

Sensor-Pulse is a heart rate or pulse sensor of photoelectrical principle.

Sensor-Pulse takes advantage of the sensitivity of the infrared with specified wavelength to the change of the blood volume produced by the blood microcirculation in the end of the blood vessel to detect the change of fingertip blood caused by heart beat.

The sensor can output the completed pulse wave voltage signal reflecting the change of the fingertip blood volume.

Introduction of Pins

Pins of the sensor: PIN1: GND PIN2: VCC General signal pins: PIN3(IO1): digital/analog signal PIN4(IO2): NC(null) Special signal pins: If it is IIC: IO1/IO2 are respectively SDA/SCL. If it is soft serial port: IO1/IO2 are respectively tx/rx.

Special to Sensor-Pulse sensor pins PIN1: GND PIN2: VCC PIN3(IO1): Analog read PIN4(IO2): NC Microduino sensor can communicate with core module through the connection with Microduino-Module Sensor Hub.

Features

• SON7015 sensor ultra-low consumption, and the power consumption is 0.2mA.
• With small size which is easy to install.
• Analog signal

Specification

• Electrical specification
  • Input voltage: 3.3~5V, and 6V at most
  • Working current: 15uA
  • Working temperature: -20~85℃
  • Output voltage: high level 5V, low level 0V

• Size
  • Size of the board: 23.5mm*13mm
  • 1.27mm-spacing 4Pin interface connected with sensorhub
  • The CAD drawing of the sensor: File:Sensor CAD.zip

• Function description
  • After press the sensor tightly on the skin, the digital output will be 1 or 0 along with the change of the blood.

• Connection
  • This sensor can be connected to the following interfaces of core: D2~D13

Document

• Schematic diagram: File:Sensor-Pulse.Zip
• Main chip: File:SON1303 datasheet.pdf
• Extension document: Pulse Module Interrupt Method Measurement

Development

Program Download

• Download and unzip the program File:Sensor-Pulse Test.zip

Programming

• Follow the Software Getting Started Guide.
• Select the Board, Processor and Port.
• Click [File]->[Open], browse to the project program address, and click "Sensor-Pulse Test.ino" to open the program.
• After confirming all these items are correct, click "→" to download the program to the development board.

Hardware Setup

• Referring to the following diagram, connect the Sensor-Pulse to the digital pin D6 of Microduino-Sensorhub.

Result

• After download, open the serial monitor.

• The pulse sensor will detect the fingertip blood change caused by heart beat, and filter out some unstable elements through algorithm to get a more accurate value.

Application

• Real-Time Pulse Detection

Project

Purchase

History

Pictures

• Front

Microduino-Cube-Station Front

• Back

Microduino-Cube-Station Back