What is your project about?
Our projects main focus is kitchen safety while in the process of cooking.Why did you decide to make it?
We decided to go this route with the project because it offered a clear and meaningful goal of peace of mind in the kitchen. With this system, even when away, the user can have confidence that any abnormalities in the kitchen will be reported swiftly and the user is able to distinguish between events. In the day and age where everything is becoming automated, it just makes sense to have a system double-checking you in the kitchen.How does it work?
The system uses three sensors, each contained in its own closed-circuit, which communicate and respond to each other based on the conditions of the environment around them. In total the system uses a Gas/Smoke sensor, Temperature sensor, and a motion sensor to effectively monitor the surroundings. The sensors used were the KY-028 temperature sensor, HC-SR501 Motion Sensor, and the Grove MQ-2 gas sensor. What occurs in the system is the motion sensor first outputs its value to the cloud, which is read by the temperature sensor module. Once the temperature reaches a certain point (stove is on), then the temperature sensor module will signal the motion sensor module either "Alarm" or "Noalarm" to toggle the LED on that module depending on the motion value the temperature module received. If the temperature is not sufficiently high only "Noalarm" signals will be sent. If the gas detecting module detects gas and receives that there is no motion, it sends "gas detected" to the temperature module which will signal "Alarm" to the motion sensor module to cut on the LED. The gas sensor module only receives and checks the motion data in order to meet the project requirements of bi-directional communication. In actual use, the gas detector would just set off the alarm regardless of the other two sensors.
The temperature sensor has a live feed to ThingSpeak graphing the analog output which represents the voltage of 0-3.3V shown as a range of 0-4096.
Example Data from the Temperature Sensor
The link for the live graph is: