Zigbee Wireless Sensor Network for better Interactive Industrial Automation

This paper deals with the design of a Modbus Enabled Zigbee Wireless Sensor Network “WSN” for better Interactive Industrial Automation. The Modbus protocol is embedded into Zigbee stack, providing a friendly interface to observe the information in the wireless network efficiently and to provide the On Demand Response to the requests. It consists of a Coordinator and the sensor nodes. The coordinator is a centralized unit which is attached to the monitoring PC. It collects the information from all other nodes on demand and provides to the end user through TCP/IP network. The sensor nodes are made intelligent for controlling the plant. These nodes are attached with the Zigbee for remote controlling in case of changing the preset values and handling any issues. The coordinator is implemented using the ARM9 controller and the Sensor Nodes are implemented using the ARM7 microcontroller. RTLinux is used at the coordinator for real time operations and the Sensor nodes are programmed using the Embedded C. The experimental results obtained demonstrate the usefulness of the proposed system in terms of the low power consumption, low cost, targeted towards automation and remote control applications.