Developing and remote controlling a multi-zone cooling plant using web services and a secure token mechanism

Abstract

This study involves developing a realistic multi-zone cooling plant model with three independent zones and controlling it via a USB-connected computer. Each cooling zone can have different temperature settings, and all parameters are configured by automation control software which is written in C# language. The cooling system has two cascade connected compressors, three solenoid valves and five fans. All these devices are driven by a specially developed microcontroller-based electronic control card. The developed system enables all control parameters and temperature values to be set and monitored by any Internet-connected remote device using web service technology and a secure token mechanism.