TempNet: Application of Wireless Sensor Network for Industrial Temperature Monitoring with IoT Integration

Abstract

Temperature measurement and control in different points of different industrial machines are one of the most important parameters for smooth and reliable operations. Most of the traditional temperature monitoring systems in the industries of developing countries are based on either wire or thermocouple or infrared thermal scanner. In this paper, the distributed temperature is measured within the range of $- 40 ^{\circ}\mathrm{C}$ to $1350 ^{\circ}\mathrm{C}$ using K type thermocouple via a wireless sensor network (WSN). To construct WSN, zigbee is used. The network coordinator is connected with the main processing unit which is interfaced with the computer showing the temperature in graphical format. The graphical user interface(GUI) is developed using MATLAB. The main processing unit also uploads the data to the cloud server. For security purpose, the data is encrypted at the router side by Advanced Encryption Standard (AES) algorithm and decrypted on the coordinator side. An android app that is synchronized with the cloud server is developed to visualize the temperature data in a remote android device. Received Signal Strength Intensity (RSSI) based results are also analyzed on which it is found that at 600m distance the RSSI value is about -67 dBm and no data is lost or corrupted.