Practical Implementation of WSN Based Data Acquisition System with External Connectivity

WSN technology holds lot of promise in developing sensing and monitoring applications for both terrestrial as well as underground environment. The data thus acquired could be transmitted wirelessly even to remote locations for processing and further analysis thereby helping the decision makers to take appropriate measures. This paper discusses the experimentations done to develop a WSN based Data Acquisition System to monitor water quality parameters like pH, Conductivity, ORP/Redox etc. in real time. The System has VPN based connectivity to external network through appropriate gateways, so that enterprise applications can interact with WSN Mesh Networks. A generic prototype model has been developed which could be deployed for monitoring the water quality of any water body. A custom application in Mat lab has been developed for online and offline sensor data visualization and analysis.