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Session 1159

Internet-Based ON/OFF Controller Using LabVIEW

Edwin K. Rézaei, and Sri R. Kolla

Electronics and Computer Technology Program Department of Technology Systems Bowling Green State University Bowling Green, Ohio 43404

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).

I. Introduction

In the academic and industrial communities, remote real-time control of processes is receiving considerable attention. Various technologies are developed to perform the remote real-time control using Internet-based technology. LabVIEW is one of the well-known software packages used in process control applications [1]. LabVIEW uses various protocols such as TCP/IP, DataSocket, etc. that allow remote control using Internet. This paper describes real-time ON/OFF control [2] of a temperature-control experiment remotely using the DataSocket communication protocol in LabVIEW for a distance education laboratory.

Several universities have developed Internet-based process control laboratories for distance education using LabVIEW and its communication protocols. Researchers at the Fort valley State University studied LabVIEW’s Internet capabilities [3]. The research identified the advantages and disadvantages of this technology [3]. A remote web-based engineering laboratory was developed at Drexel University, where every workstation has accessibility and controllability

Proceedings of the 2003 American Society for Engineering Education Annual Conference & Exposition Copyright © 2003, American Society for Engineering Education

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Rezaei, E., & Kolla, S. (2003, June), Internet Based On/Off Controller Using Labview Paper presented at 2003 Annual Conference, Nashville, Tennessee. 10.18260/1-2--11747