Development of Web Based Light Intensity Control of LED Using LabVIEW

This paper presents the development of web based light intensity control of LED light source using LabVIEW. In this paper, a low-cost microcontroller is used as a control card for supplying the digital dimming signals to the LED light source from the National Instruments LabVIEW software. The main objective of this paper is to implement dimming of light intensity from both the onsite and remote location using intelligent control. The dimming level signal is transmitted to low-cost microcontroller board from the virtualinstrument software rchitecture (VISA) driver of LabVIEW software from both onsite and remote location. The diming signal from microcontroller port are isolated using an opto-coupler and are supplied to the LED driver. In order to felicitate the remote dimming, the dimming signals are supplied from the client computer to microcontroller board using web publishing tool of LabVIEW.