Smart patient monitoring system using Arduino or raspberry pi

Note: these examples are written for Arduino 1.0.1. Certain functions may not work in other versions.

The e-health Sensor Platform counts with a C++ library that lets you read easily all the sensors and send the information by using any of the available radio interfaces. This library offers an simple-to-use open source system. In order to ensure the same code is compatible in both platforms (Arduino and Raspberry Pi) we use the ArduPi libraries which allows developers to use the same code

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Using the library with Arduino:-
The eHealth sensor platform includes a high level library functions for a easy manage of the board. This zip includes all the files needed in two separated folders, “eHealth” and “PinChangeInt”. The “PinChangeInt” library is necessary only when you use the pulsioximeter sensor. Copy this folders in the arduino IDE folder “libraries”. Don't forget include these libraries in your codes.Download the e-Health library for Arduino

Libraries are often distributed as a ZIP file or folder. The name of the folder is the name of the library. Inside the folder will be the .cpp files, .h files and often a keywords.txt file, examples folder, and other files required by the library.
To install the library, first quit the Arduino application. Then uncompress the ZIP file containing the library. For installing eHealth library , uncompress eHealth.zip. It should contain a folder called “eHealth” and another called “PinChangeInt”, with files like eHealth.cpp and eHealth.h inside. Drag the eHealth and PinChange folders into this folder (your libraries folder). Under Windows, it will likely be called “My Documents\\Arduino\\libraries”. For Mac users, it will likely be called “Documents/Arduino/libraries”. On Linux, it will be the “libraries” folder in your sketchbook. The library won't work if you put the .cpp and .h files directly into the libraries folder or if they're nested in an extra folder. Restart the Arduino application. Make sure the new library appears in the Sketch->Import Library menu item of the software. That's it! You've installed a library!

Using the library with Raspberry Pi:-

The e-Health library for Raspberry Pi requires the arduPi library and both libraries should be in the same path.

Download the e-Health Libraries for Raspberry

Creating a program that uses the library is as simple as putting your code in this template where it says “your arduino code here”

//Include eHealth library (it includes arduPi)
#include “eHealth.h”

/********************************************************

* * IF YOUR ARDUINO CODE HAS OTHER FUNCTIONS APART FROM*

* *setup() AND loop() YOU MUST DECLARE THEM HERE *

* ******************************************************/

/**************************

* YOUR ARDUINO CODE HERE *

* ************************/

int main (){

setup();

while(1){

loop();

} return (0);

}

Compilation of the program can be done in two ways:
Compiling separately eHealth and arduPi, and using them for compiling the program in a second step:

g++ -c arduPi.cpp -o arduPi.o

g++ -c eHealth.cpp -o eHealth.o

g++ -lpthread -lrt user-e-health-app.cpp arduPi.o eHealth.o -o user-e-health-app

Compiling everithing in one step:

g++ -lpthread -lrt user-e-health-app.cpp arduPi.cpp eHealth.cpp -o user-e-health-app

Executing your program is as simple as doing:

sudo ./user-e-health-app

Pulse and Oxygen in Blood (SPO2)
SPO2 sensor features Pulse oximetry a noninvasive method of indicating the arterial oxygen saturation of functional hemoglobin.Oxygen saturation is defined as the measurement of the amount of oxygen dissolved in blood, based on the detection of Hemoglobin and Deoxyhemoglobin. Two different light wavelengths are used to measure the actual difference in the absorption spectra of HbO2 and Hb. The bloodstream is affected by the concentration of HbO2 and Hb, and their absorption coefficients are measured using two wavelengths 660 nm (red light spectra) and 940 nm (infrared light spectra). Deoxygenated and oxygenated hemoglobin absorb different wavelengths.

Deoxygenated hemoglobin (Hb) has a higher absorption at 660 nm and oxygenated hemoglobin (HbO2) has a higher absorption at 940 nm . Then a photo-detector perceives the non-absorbed light from the LEDs to calculate the arterial oxygen saturation.
A pulse oximeter sensor is useful in any setting where a patient's oxygenation is unstable, including intensive care, operating, recovery, emergency and hospital ward settings, pilots in unpressurized aircraft, for assessment of any patient's oxygenation, and determining the effectiveness of or need for supplemental oxygen. Acceptable normal ranges for patients are from 95 to 99 percent, those with a hypoxic drive problem would expect values to be between 88 to 94 percent, values of 100 percent can indicate carbon monoxide poisoning. The sensor needs to be connected to the Arduino or Raspberry Pi, and don't use external/internal battery.

Connecting the sensor:-

Connect the module in the e-Health sensor platform. The sensor have only one way of connection to prevent errors and make the connection easier.

PICTURE 1:-

connecting to the e-Health shield with Pulse and Oxygen in Blood (SPO2)

PICTURE 2:-

Insert your finger into the sensor and press ON button.

AND NOW THE TEST THE SPO2 IT IS WORKING OR NOT

THIS IS THE CODE LINK:(GET HEAR)

PICTURE 3:-

Upload the code to Arduino and watch the Serial monitor.Here is the USB output using the Arduino IDE serial port terminal

Raspberry Pi code:

TESTING CODE RASPBERRY PI GET HEAR

Step 5: