MEGR3171 IOT Team 5: Andrew Wilkerson, Austin Greco, Michael Kaufman

Published November 23, 2019

Team 5 Room Monitoring Device

A room monitoring system notifies a guard and allows him to respond quickly. The entire system can be monitored by a command room.

BeginnerWork in progress3 hours544

Things used in this project

Hardware components

Particle Argon

5 mm LED: Red

5 mm LED: Green

C&K Switches PTS 645 Series Switch

Limit Switch, 5 A

Buzzer

Software apps and online services

Particle Build Web IDE

IFTTT Maker service

Google Sheets

Story

The Idea

The idea behind this project was to create a useful tool for monitoring an area. This is done by using an alarm monitoring system on a doorway, a device to alert a local guard and allow them to respond quickly without the use on verbal communication, as well as a command center that monitors the event as it unfolds.

Operation Diagram

Particle 1 – The Alarm

The first particle is used to monitor when someone walks through the door. It does that by using a switch. When the door opens it closes the switch. Once the particle registers that the switch is closed it lights the led to signal it has been tripped and publishes the alarm event.

Alarm Unit

Particle 2 – The Guard

The second particle is used as a monitoring device as well as registers when a guard is responding. It does that by subscribing to the alarm event. Once it receives that the alarm has been tripped it will play a buzzer and light the LED for to alert the guard. After that it will wait for the guard to press the button. Once the button is pressed the particle will publish the responding event.

Guard Unit

Particle 3 – The Command Center

The last particle is used as a command unit. Once it receives the alarm event the particle will light a red LED. Then, after the second particle publishes the responding event the particle will turn on a green LED. After both LEDs are lit the command unit can reset the system by pressing the reset button and sending the reset event out. This will turn off both the LEDs on the command unit as well as the LEDs on particle 1 and 2.

Command Unit

Video

Logging

The guard particle logs its responding event to a Google Sheet using IFTT.

IFTT Operation

This is useful in order to determine how many situations are being responded to or for documenting when alarms are responded to. This could be expanded as it is logged by device name. This will allow a track of how many officers are responding to a situation. It could be further expanded to include the alarm event to show the response times to events. The current google sheet log can be found here. The responses by day are located below:

Real time updates of this chart are located here.

Code

const int triggerPin = D5; 
int led = D2;
int triggerState = HIGH;

void setup() {
pinMode(led, OUTPUT);
digitalWrite(led, LOW);    

pinMode(triggerPin, INPUT);
}


void loop() {
  triggerState = digitalRead(triggerPin);
   if (triggerState == LOW) {
       Particle.publish("alarm", PRIVATE);
       digitalWrite(led, HIGH);
       Particle.subscribe("reset", reset, MY_DEVICES);
}

void reset(const char*event, const char*data)
{
    digitalWrite(led, LOW);
}

int led = D7;
int buzzer = D4;
int state = 0;
const int buttonPin = D2; 
int buttonState = LOW;



void setup() {

pinMode(led, OUTPUT);
digitalWrite(led, LOW);

pinMode(buttonPin, INPUT);

pinMode(buzzer,OUTPUT);
digitalWrite(buzzer, LOW);

Particle.subscribe("alarm", toggleBuzzer, MY_DEVICES);
}

void resetSystem(const char*event, const char*data)
{
    digitalWrite(led, LOW);
    analogWrite(buzzer, 0);
    
    Particle.subscribe("alarm", toggleBuzzer, MY_DEVICES);
}

void toggleBuzzer(const char*event, const char*data)
{

  digitalWrite(led, HIGH);
  delay(250);
  digitalWrite(led, LOW);
  delay(250);
  
  digitalWrite(led, HIGH);
  delay(100);
  digitalWrite(led, LOW);
  delay(100);
  
  analogWrite(buzzer,50);
  delay(500);
  analogWrite(buzzer,0);
  
  delay(250);
  
  analogWrite(buzzer,100);
  delay(250);
  analogWrite(buzzer,0);
  
  digitalWrite(led, HIGH);
  delay(250);
  digitalWrite(led, LOW);
  delay(250);
  
  digitalWrite(led, HIGH);
  delay(100);
  digitalWrite(led, LOW);
  delay(100);
  
  analogWrite(buzzer,50);
  delay(500);
  analogWrite(buzzer,0);
  
  delay(250);
  
  analogWrite(buzzer,100);
  delay(250);
  analogWrite(buzzer,0);
  
  digitalWrite(led, HIGH);
  analogWrite(buzzer,50);
  
  while (buttonState == LOW){
      buttonState = digitalRead(buttonPin);
   if (buttonState == HIGH) {
       analogWrite(buzzer,0);
       Particle.publish("responding", PRIVATE);
   }
   delay(100);
  }

    Particle.subscribe("reset", resetSystem, MY_DEVICES);
}

int buttonPin = D5;
int respondingLED = D3;
int alarmLED = D4;
int buttonState = LOW;
int alarmState = LOW;
int respondingState = LOW;

void setup() {
pinMode(buttonPin, INPUT);
pinMode(respondingLED, OUTPUT);
pinMode(alarmLED, OUTPUT);

Particle.subscribe("alarm", alarmResponse, MY_DEVICES);
}

void alarmResponse(const char*event, const char*data)
{
    digitalWrite(alarmLED, HIGH);
    Particle.subscribe("responding", respondingled, MY_DEVICES);
}


void respondingled(const char*event, const char*data)
{
    digitalWrite(respondingLED, HIGH);
    while (buttonState == LOW){
      buttonState = digitalRead(buttonPin);
    }
   if (buttonState == HIGH) {
       digitalWrite(respondingLED, LOW);
       digitalWrite(alarmLED, LOW);
       Particle.subscribe("alarm", alarmResponse, MY_DEVICES);
}
}

Team 5 Room Monitoring Device

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Alarm

Guard

Command

Code

Door Alarm - Particle 1

Guard Unit - Particle 2

Command Unit - Particle 3

Credits

Andrew Wilkerson

Austin Greco

Michael Kaufman

Comments

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Team 5 Room Monitoring Device

Team 5 Room Monitoring Device

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Alarm

Guard

Command

Code

Door Alarm - Particle 1

Guard Unit - Particle 2

Command Unit - Particle 3

Credits

Andrew Wilkerson

Austin Greco

Michael Kaufman

Comments

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