Published August 31, 2022

Internet of Diaper

Have you ever thought of an AI diaper with monitor function? Now Using sensors we could make ELDERLY &BABY CARE even Smarter!

IntermediateShowcase (no instructions)4 hours1,722

Things used in this project

Hardware components

Seeed Studio SenseCAP K1100 - The Sensor Prototype Kit with LoRa® and AI

Software apps and online services

Ubidots

Arduino IDE

Hand tools and fabrication machines

Inflatable baby

Diapers

Story

Why this project?

Accessibility design is an area that I have always paid attention to. The senses of infants have not yet matured, while the physical functions of the elderly gradually degenerate with age. This is an unique and special life intersection.

- The elderly are a complex of impairments with varying degrees of decline in vision, hearing, movement and cognitive functions.

- Older adults suffered from Alzheimer's have difficulty in hearing, speaking, and comprehension, and therefore cannot accurately express their needs.

- In clinical practice, traditional diapers users are often not replaced in time, resulting in diseases such as bedsores, dermatitis, and urinary tract infections.

- Facing aging population increase, the related medical and nursing infrastructure resources are uneven, and nursing staff often takes care of multiple patients at the same time.

- Family members who are not around are hard to know the situation of the elderly, patients, infants and young children.

Project Introduction

Io Diaper is a wearable smart device designed for senile degenerative diseases (Alzheimer's disease, etc.), bedridden patients who cannot take care of themselves, and infants and young children. It can detect the dryness of their diapers in real time and provide caregiver and caregivers to send notifications, meanwhile supporting the recording and tracking of background data, helping to prevent some health problems in advance.The plug-and-play Moisture Sensor recognizes the change in the moisture content of the diaper, and sends a signal to the Wio Terminal, and the built-in Wi-Fi module connects to the IoT platform (Ubidots is used in this project). When the moisture content reaches a certain value, the IoT platform triggers the event and informs the nursing staff to change in time in the form of SMS, mail and phone.

Process and steps

1. Idea

2. Select related sensor

3. Code and debug

4. IoT Platform connection (Ubidots)

5. Test

6. Install

io diaper

#include <PubSubClient.h>
#include <rpcWiFi.h>
#include <Wire.h>


/*Office WiFi*/
#define WIFISSID "SEEED-MKT" // Put your WifiSSID here
#define PASSWORD "depot0518" // Put your wifi password here

#define TOKEN "BBFF-8kv6qgJsV4lPnZetlr2GuUbovcM2o3"
#define VARIABLE_LABEL1 "soil" // Assign the variable label
#define DEVICE_LABEL "wio-terminal" // Assign the device label
#define MQTT_CLIENT_NAME "WLKDJH2EHC" // MQTT client Name

char mqttBroker[] = "industrial.api.ubidots.com";

WiFiClient wifiClient;
PubSubClient client(wifiClient);

uint8_t state = 0;

int sensorPin = A0;
static int soilValue = 0;

static int cont = 0;


char str_soil[6];
char payload[700];
char topic[150];

void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  for (int i = 0; i < length; i++) {
    Serial.print((char)payload[i]);
  }
}

void reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
    Serial.println("Attempting MQTT connection...");

    // Attempt to connect
    if (client.connect(MQTT_CLIENT_NAME, TOKEN, "")) {
      Serial.println("connected");
    }
    else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 2 seconds");
      // Wait 2 seconds before retrying
      delay(2000);
    }
  }
}


void read_soil() //read moisture value
{
  soilValue = analogRead(sensorPin);
  Serial.print("Moisture = ");
  Serial.println(soilValue);
  if (soilValue > 500) cont = 2;
  if (soilValue < 450) cont = 1;
}

void send_data()
{
  dtostrf(soilValue, 4, 0, str_soil);

  if (!client.connected()) {
    reconnect();
  }
  // Builds the topic
  sprintf(topic, "%s", ""); // Cleans the topic content
  sprintf(topic, "%s%s", "/v2.0/devices/", DEVICE_LABEL);

  //Builds the payload
  sprintf(payload, "%s", ""); // Cleans the payload
  sprintf(payload, "{\"%s\":", VARIABLE_LABEL1); // Adds the variable label
  sprintf(payload, "%s%s", payload, str_soil); // Adds the value
  sprintf(payload, "%s}", payload); // Closes the dictionary brackets

  client.publish(topic, payload);
  delay(500);


  client.loop();
}


void setup() {
  Wire.begin();
  Serial.begin(9600);

  while (!Serial);


  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    WiFi.begin(WIFISSID, PASSWORD);
  }

  WiFi.mode(WIFI_STA);
  WiFi.disconnect();
  WiFi.begin(WIFISSID, PASSWORD);

  delay(1000);
  client.setServer(mqttBroker, 1883);
  client.setCallback(callback);

}

void loop() {
  read_soil();
  send_data();
}