Temperature and Humidity Monitoring in Silo

Abstract

Silos are best way to store the food grains. In silos, temperature and humidity affects the quality of food grains in storage and cause lessen in oil composition, color and many other characteristics. The temperature and humidity are the important parameters in maintaining the quality of the food grain during storage. Monitoring in silos is usually done by using a temperature reading device like RTDs, Thermistors or by using an inflexible, offline system which causes logging of data. The wireless transmission system is needed in order to send the data wirelessly to get the high data accuracy with less errors. The proposed system consists of transmitter node and receiver node, transmitter node includes an Arduino promini microcontroller unit, a LoRa RA02 module, and a BME280 sensor that measures temperature, humidity and transmits both the values to the receiver node with the help of LoRa. The transmitter nodes are made wireless by providing power through AAA batteries. The receiver node which is connected to gateway called harvester reads the data from receiver node and sends to the cloud database, using IOT data is viewed in the dashboard online with help of Node-Red platform. The proposed system achieves long range wireless data transmission with range up to 500m with high accuracy, low cost, low power consumption of 0.045W of each transmitter node.