Abstract:An integrated sensor based daylight responsive light controller has been designed and developed. The developed cost-effective light controller performs on logical decision derived from output of integrated sensor circuit comprising of daylight sensor and occupancy sensor. The performance analysis has also been carried out to understand the actual operating condition of the system using different sensors to control lamp circuits in small indoor lighting applications. The sensitivity levels of the photo sensor (i.e. a Light Dependent Resistor or LDR) and the occupancy sensor (i.e. a Passive Infrared Sensor or PIR) circuits can be adjusted through in-built tuning facility in developed circuit after experimental measurement of the response characteristics of the both sensors. By monitoring the indoor lighting system with the developed controller, it is possible to reduce the usage of electrical energy during the absence of occupant in any room. It is also possible to vary lamp output according to the seasonal variation in daylight level by selecting different reference voltage level and to use minimum electrical energy by utilizing the available daylight. It is a low cost solution due to the advantage of components and the sensors in the market at low cost.
References:1. Shashi R.V., Secretary, Government of India, Ministry of Power, Energy Markets And Technologies In India // Keynote Address in Global Energy Dialogue at Hanover (Germany), April 25, 2006. 2. Slater A.I., Lighting and Energy in Buildings. Presented at the 23rd Session of the CIE, New Delhi, Published by International Commission on Illumination, Vienna, 1995, Vol.1. 3. Rubinstein F., Siminovitch M. and Verderber R., Fifty Percent Energy Savings with Automatic Lighting Control // IEEE Transactions on Industry Applications, 1993, Vol.29, #. 4, pp. 768-773. 4. Fraden J., Handbook of Modern Sensors: Physics, Designs, and Applications. Fourth Edition, 2010. 5. Guo X., Tiller D.K., Henze G.P. and Water C.E., The performance of occupancy-based lighting control systems // Lighting Research and Technology, 2010, Vol. 42, pp.415. 6. Tiller D.K., Guo X., Henze G.P. and Waters C.E., Validating the application of occupancy sensor networks for lighting control // Lighting Research and Technology, 2010; Vol.42, pp.399-414. 7. Newsham G.R., Aries M.B.C. and Mancini S and Faye G, Individual control of electric lighting in a daylit space // Lighting Research and Technology, 2008, Vol.40, pp. 25-41. 8. Rubinstein F., Siminovitch M. and Verderber R., Fifty Percent Energy Savings with Automatic Lighting Control // IEEE Transactions on Industry Applications, 1993, Vol.29, no. 4, pp. 768-773. 9. Rea, M. (Ed.), Lighting Handbook Reference & Application, Illuminating Engineering Society of North America. Ninth Edition, 2000. 10. Kim S. and Mistrick R. “Recommended Daylight Conditions for Photosensor System Calibration in a Small Office // Journal of the Illuminating Engineering Society, 2001, pp. 176-188. 11. Mistrick R.G. and Sarkar, A., Daylight-Responsive Photosensor Control in Classrooms with Different Daylight Delivery Systems”, presented at the IESNA Annual Conference in Tampa, Florida, July 2004. 12. Bierman A. and Conway K.M., “Characterizing Daylight Photosensor System Performance to Help Overcome Market Barrier // Journal of the Illuminating Engineering Society, 2000, pp. 101-115. 13. E Source Emerging Technology Series, Kinney L., Practical Control Strategies for Harvesting Daylight Savings, ER-00-13, July 2000. 14. Slater A.I., Lighting and Energy in Buildings, presented at the 23rd Session of the CIE, New Delhi, Published by International Commission on Illumination, Vienna, 1995, Vol.1. 15. Rubinstein F., Avery D., Jennings J. On the Calibration and Commissioning of Lighting Controls. Right Light Conference, Copenhagen, Denmark, 1997. 16. Kim S. and Mistrick R. Recommended Daylight Conditions for Photosensor System Calibration in a Small Office // Journal of the Illuminating Engineering Society, 2001, pp. 176-188. 17. Philips Actilume1-10V Application guide http://www.lighting.philips.com/pwc_li/main/products/ controls/assets/actilume1-10V-applicationguide-v2fin2new.pdf. 18. Philips 1-10V OEM application guide http://www.lighting.philips.com/pwc_li/main/products/ controls/assets/actilume%20wireless1-10v-oem-application-guide-dec2012-new.pdf 19. Philips DALI Application guide http://www.lighting.philips.com/pwc_li/main/products/assets/pdf/Actilume_DALI_Gen2_ApplicationGuide-V4_Apr-2014.pdf 20. Philips ActiLume OEM Application guide] http://www.lighting.philips.com/pwc_li/main/products/ assets/pdf/ActiLume_OEM_ApplicationGuide_V2Fin.pdf
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