EE406- G19 - Week 12

Week 12

05/04/2021 To 11/04/2021

COMPLETED TASKS DURING THE PERIOD

Thingspeak Visualization IOT Platform

Thingspeak.com IOT platform was used to visualize real time data graphically. By using this site we can create a private channel to visualize device data. It has 15 sec latency to data updating speed. Also we can get more less latency service by paid monthly. But in this stage we no need it. Also we can get service MATLAB cloud server services to compare the data.

Administrative Details

Channel Details

Channel Name : Urine Volume Monitoring Platform For Dengue Patients

Maths Work Account : urinevolumemeter@gmail.com

Account Password : Urinevolume2020

Channel ID : 1256809

Read API Key : M1UZKQPGO7UMKZ8I

Write API Key : RAPBZ11S6DYB2NYL

Arduino Code to upload real time processing data to thingspeak platform

Data uploading code through Wifi Module

#include <SoftwareSerial.h>

#define RX 2

#define TX 3

String PID = "S.R.Hettiarachchi";

String AP = "Dialog 4G 193"; // AP NAME

String PASS = "45pZerC56"; // AP PASSWORD

String API = "29B9071Y7JF0OJ20"; // Write API KEY

String HOST = "api.thingspeak.com";

String PORT = "80";

String field = "field1";

int countTrueCommand;

int countTimeCommand;

boolean found = false;

int valSensor = 1;

SoftwareSerial esp8266(RX,TX);

void setup() {

Serial.begin(9600);

esp8266.begin(115200);

sendCommand("AT",5,"OK");

sendCommand("AT+CWMODE=1",5,"OK");

sendCommand("AT+CWJAP=\""+ AP +"\",\""+ PASS +"\"",20,"OK");

}

void loop() {

//valSensor = getSensorData();

String getData = "GET /update?api_key="+ API +"&"+ field +"="+PID;

sendCommand("AT+CIPMUX=1",5,"OK");

sendCommand("AT+CIPSTART=0,\"TCP\",\""+ HOST +"\","+ PORT,15,"OK");

sendCommand("AT+CIPSEND=0," +String(getData.length()+4),4,">");

esp8266.println(getData);delay(1500);countTrueCommand++;

sendCommand("AT+CIPCLOSE=0",5,"OK");

}

int getSensorData(){

return random(1000); // Replace with your own sensor code

}

void sendCommand(String command, int maxTime, char readReplay[]) {

while(countTimeCommand < (maxTime*1))

{

esp8266.println(command);//at+cipsend

if(esp8266.find(readReplay))//ok

{

found = true;

break;

}

countTimeCommand++;

}

if(found == true)

{

//Serial.println("OYI");

countTrueCommand++;

countTimeCommand = 0;

}

if(found == false)

{

//Serial.println("Fail");

countTrueCommand = 0;

countTimeCommand = 0;

}

found = false;

}

Arduino code File

Data Analyzing using MATLA cloud server

Analyze increasing rate of urine drop count at constant time slot

% Template MATLAB code for visualizing data from a channel as a 2D line

% plot using PLOT function.

% Prior to running this MATLAB code template, assign the channel variables.

% Set 'readChannelID' to the channel ID of the channel to read from.

% Also, assign the read field ID to 'fieldID1'.

% TODO - Replace the [] with channel ID to read data from:

readChannelID = 1256809;

% TODO - Replace the [] with the Field ID to read data from:

fieldID1 = 2;

% Channel Read API Key

% If your channel is private, then enter the read API

% Key between the '' below:

readAPIKey = 'M1UZKQPGO7UMKZ8I';

%% Read Data %%

[data, time] = thingSpeakRead(readChannelID, 'Field', fieldID1, 'NumPoints', 10, 'ReadKey', readAPIKey);

A= zeros(1,5);

for x=2:6

A(x-1) = (data(x)-data(x-1))/15;

end

time1 = time(2:6);

%% Visualize Data %%

subplot(2,1,1);

plot(time, data);

xlabel('Time');

ylabel('Urine drop count');

subplot(2,1,2);

plot(time1, A);

xlabel('Time');

ylabel('Increasing Ratio');

Overall Analysis

% Template MATLAB code for visualizing data from a channel as a 2D line

% plot using PLOT function.

% Prior to running this MATLAB code template, assign the channel variables.

% Set 'readChannelID' to the channel ID of the channel to read from.

% Also, assign the read field ID to 'fieldID1'.

% TODO - Replace the [] with channel ID to read data from:

readChannelID = 1256809;

% TODO - Replace the [] with the Field ID to read data from:

fieldID1 = 7;

fieldID2 = 5;

% Channel Read API Key

% If your channel is private, then enter the read API

% Key between the '' below:

readAPIKey = 'M1UZKQPGO7UMKZ8I';

%% Read Data %%

[data, time] = thingSpeakRead(readChannelID, 'Field', fieldID1, 'NumPoints', 15, 'ReadKey', readAPIKey);

[data1, time1] = thingSpeakRead(readChannelID, 'Field', fieldID2, 'NumPoints', 15, 'ReadKey', readAPIKey);

%% Visualize Data %%

plot(data,data1);

Overall progress of Thingspeak channel

2021-05-04-01-32-36.flv

Choosing best Display for this device

TFT Display

TFT 1.8 inch colour display was used to display real time data in this device. But we had not implement this display practically due to lack of components in this covid situation. Hence we simulated display performance by using proteus software and arduino microcontroller.

TFT display specifications

Description

TFT LCD module has always been one of the hot products in DIY industry and LCD is basically the necessary products during all projects, at the same time, serial port modules are also the popular ones, because it takes few IO and the usage is simple. This section of the 1.8-inch TFT LCD serial SPI integrated features of compact, SPI interface.

Feature

It is a 1.8 "SPI TFT LCD Screen Module, 9pins interface. Not just a LCD break but include SD card (2GB),
The LCD drive ic is ST7735S. It's a 128 X 160 (resolution). The LCD has a wide viewing angle, the contrast is also very suitable.
The display interface is serial, it just needs 5 wires (CS, RS, SCL, SDA, RST) for controlling.
SDcard use hardware SPI interface (CS / MOSI / MISO / SCK), Not solder pins.

Parameter

LED 3.3V IO and Power Supply pin
LED UTFT Support
SCL Serial clock input
SDA/SDI Serial data input
DC:Data/Command selection
RST:Reset Low level active
CS:Chip Selection，Low level active
GND:Ground
VDD33:3.3V Power Supply pin

Display Simulation Code

#include "SPI.h"

#include "Adafruit_GFX.h"

#include "Adafruit_ILI9341.h"

#include "Keypad.h"

int drop_count = 0;

float time1= 151.2;

float Flow_rate= 50.3;

float Urine_vol= 0.0;

int k = 0;

String ID = "";

const byte ROWS = 4;

const byte COLS = 3;

char keys[ROWS][COLS] = {

{ '1','2','3' },

{ '4','5','6' },

{ '7','8','9' },

{ '*','0','#' }

};

byte rowPins[ROWS] = {4,3,2,12};

byte colPins[COLS] = {7,6,5};

Keypad keypad = Keypad(makeKeymap(keys),rowPins, colPins, ROWS, COLS);

// For the Adafruit shield, these are the default.

//#define TFT_DC 9

//#define TFT_CS 10

// Use hardware SPI (on Uno, #13, #12, #11) and the above for CS/DC

//Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

// If using the breakout, change pins as desired

Adafruit_ILI9341 tft = Adafruit_ILI9341(8, 9, 11, 13, 10, 12);

void setup() {

Serial.begin(9600);

Serial.println("ILI9341 Test!");

tft.begin();

Serial.println(F("Benchmark Time (microseconds)"));

delay(1);

testText();

tft.fillScreen(ILI9341_WHITE);

Patient_ID();

}

void loop(void) {

if (k==0){

char key = keypad.getKey();

if (key){

if (key == '*'){

k=1;

}

else {

tft.setTextColor(ILI9341_GREEN); tft.setTextSize(5);

tft.print(key);

ID += key;

}

if (k==1){

tft.fillScreen(ILI9341_WHITE);

Patient_Report();

drop_count =drop_count +1;

Urine_vol = Urine_vol +20.4;

//delay(1000);

}

unsigned long testText() {

unsigned long start = micros();

tft.setCursor(15, 70);

tft.setTextColor(ILI9341_RED); tft.setTextSize(3);

tft.println("URINE VOLUME");

tft.setCursor(80, 100);

tft.setTextColor(ILI9341_RED); tft.setTextSize(3);

tft.println("METER");

tft.setCursor(35, 125);

tft.setTextColor(ILI9341_MAGENTA); tft.setTextSize(1.5);

tft.println("Smart Urine Volume Detector");

tft.setCursor(0, 150);

tft.setTextColor(ILI9341_GREEN); tft.setTextSize(2);

tft.println("Urine Report Reading");

tft.setCursor(15, 170);

tft.println("Digital Interface");

tft.setCursor(25, 300);

tft.setTextColor(ILI9341_BLACK); tft.setTextSize(1);

tft.println("** UNIVERSITY OF PERADENIYA **");

return micros() - start;

}

unsigned long Patient_Report() {

unsigned long start = micros();

tft.setCursor(0, 10);

tft.setTextColor(ILI9341_MAGENTA); tft.setTextSize(2);

tft.println("Patient Report");

tft.setCursor(5, 50);