CS.10 – Fruit Hygiene Detection

• Kalpkumar Shah
• Amaan Shah
• Yuqing Wu
• Madhava Sai Yamike

The pandemic had made us learn the importance of hygiene and quality of food. The main objective of this project is to detect whether the food is spoiled or not. The components required for this project are nodeMCU, MQ2 Gas sensor , DHT11 Sensor, LED, Resistor, Jumper Wires and a mobile phone. In this project we will detect the methane level of food material by using an MQ2 gas sensor to check whether the food is good and if the methane level crosses its threshold value then the food is detected as spoiled. DHT11 sensor is used to detect the temperature and humidity. With the help of nodeMCU we can connect through WIFI. We will get a notification on the mobile phone about the methane level, temperature, humidity and whether the food is spoiled or good to eat. All perishable food left at room temperature for more than two hours should be discarded because bacteria grow most rapidly between 4.4 degrees Celsius and 60 degrees Celsius. Consuming rotten or spoiled food can cause food poisoning, a condition that causes nausea, vomiting, and diarrhea. In the process of breaking down food, bacteria produce acids and waste products, as well as methane, a gas that is very harmful to the climate. This system can be used when farmers and traders store food in remote locations or in storage to monitor its freshness. It can also be used at home, in restaurants, and in other applications that need continuous monitoring of food. Users can also use this to log food spoilage and methane emissions, as well as to receive email alerts. Our current project idea is to make a device that can detect when certain foods are no longer good to eat and also good to eat. Using a NodeMCU, MQ2 Gas Sensor, and a DHT11 Sensor along with our other materials we will be able to evaluate certain fruit and determine if they are safe to eat based on the current temperature and gas levels. A red LED will glow, and email alerts will be sent via a Wi-Fi module if the amount of methane released from the food exceeds a certain threshold. If the amount of methane released is below the threshold, a green LED will glow.