Signal Communication Solution in Controlling Building Electrical Equipments Applying BMS Technology

This paper introduces an overview of the building management system (BMS) over the internet, thereby proposing a control and communication framework for electrical equipment in the building. To be more detailed, the main communication protocol is designed based on different techniques such as Modbus RS-485, CC-Link, and the Internet. The central controller is built up from the PLC (Programmable Logic Controller) to ensure stability, high accuracy, and the ability to expand flexible peripheral modules. In addition, the combination of open source software such as Visual Studio, AT Driver Server, Itag Builder, etc. is applied to establish the intuitive monitoring interface, allowing one to operate and observe the status of the equipment. The real-time data of the electrical equipment in the building as well as the environmental parameters are collected from the sensors. Through an illustrative experimental model, the problem of operating electrical equipment in a hotel with a monitoring interface can be solved through real-time data access such as report output, incident warning, and management. The experimental results have proved the accuracy and practical applicability of the control and monitoring structure of the building or hotel proposed in this paper.