Internet Based On/Off Controller Using Labview
Edwin Rezaei, Sri R. Kolla
Abstract
This paper presents the development and implementation of an Internet-based remote ON/OFF control experiment in real-time using the DataSocket communication protocol in LabVIEW. The designed experiment is connected to the server computer using a Data Acquisition (DAQ) board. The objective of this experiment is to maintain the temperature inside a wooden box that is heated by a light bulb at some desired set-point value, which is selected by a remote client. The temperature is measured using a solid-state temperature sensor circuit connected to the DAQ board. When the temperature differs from the set-point value (with neutral zone), it results in the high-limit and the low-limit, and the controller turns a fan ON or OFF accordingly. The software for both the client and server computers is developed using DataSocket protocol in LabVIEW. The remote clients can monitor the temperature and control the set-point. The experiment is successfully used in the Electronics and Computer Technology (ECT) program's process control courses at the Bowling Green State University (BGSU).