Fototransistör ve LDR Sensörün Optik Ölçüm Hassasiyetinin İncelenmesi

Yıl 2017, Cilt: 7 Sayı: 2, 545 - 549, 01.06.2017

Mehmet Ali Özçelik

Öz

Işığa duyarlı devre elemanları, ışık miktarındaki değişime bağlı olarak akım, gerilim ve direnç değişimi gibi elektriksel değerler üretirler. Bu sayede bu elemanlar ışık ölçüm, ışık kontrol, ışık algılama sistemlerinde kullanılırlar. Bu çalışmada ışık algılama sistemlerinde yaygın kullanıma sahip Fototransistör ve LDR ışığa bağlı direnç kapalı ortamda değişken ışık değerlerine maruz bırakılarak elektriksel cevap değerleri ölçülmüş hassasiyet analizi yapılmıştır, elde edilen değerler göz önünde bulundurulduğunda fototransistör 134.23 standart sapma değeri ile LDR den yüksek ışığa duyarlılık gösterdiği belirlenmiştir

Anahtar Kelimeler

LDR sensör, Işık yoğunluğu, Luxmetre, Foto akım, Fototransistör

The Analysis of The Optical Measurement Sensitivity of The Phototransistor and LDR Sensors

Öz

The light sensitive circuit elements, in line with the changes in the amount of light, produce electrical values such as current, voltage and resistance change. Thus, these elements are being used in light measurement, light control and light detection systems. In this research, the Phototransistor and LDR light dependent resistor , which are commonly used in light detection systems, have been exposed to different lighting values in an indoor environment. Their electrical reaction values have been measured and sensitivity analysis has been conducted. In the light of the findings obtained, it has been seen that with 134.23 standard deviation rate Phototransistor has shown more light sensitivity than LDR.

Anahtar Kelimeler

LDR sensor, Phototransistor, Light intensity, Lux-meter, Photo-current.

Kaynakça

• Coskun, A., Sevil H.E., Ozdemir S. 2011. Cost Effective Localization in Distributed Sensory Networks. Eng. Appl. of Artificial Int., 24:232–237.
• Fathabadi, H. 2016. Comparative Study between Two Novel Sensorless and Sensor Based Dual-Axis Solar Trackers. Sol. Energy, 138:67–76.
• Gentile, N., Laike, T., Dubois, M.C. 2016. Lighting Control Systems in Individual Officies Rooms at High Latitude: Measurements of Electricity Savings and Occupants’ Satisfaction, Solar En., 127:113-123.
• Ghassan, M.S., Hashimah, I., Debnath, N., Nadya A. 2015. Optimal Light Power Consumption Using LSDR Sensor. 2015 IEEE Int. Symposium on Rob. and Int. Sensors (IEEE IRIS2015), 144-148.
• Juan, F.D.P., Bajo, J., Rodriguez, S., Villarubia, G., Corchado, J.M. 2016. Int. sys. for lighting cont. in smart cities. Inf. Sci.,372 :241–255.
• Kamran, A., Khokhar, A.Z. 2011. Rahman F., High responsivity silicon MOS phototransistors. Sens.and Act. A, 172:434-439.
• Kostov, P., Hornstein, K.S., Zimmermann, H. 2011. Phototransistors for CMOS Optoelectronic Integrated Circuits. Sen. and Act.,172:140-147.
• Lau, K.T., Baldwin, S., O’Toole, M. 2006. A Low-Cost Optical Sensing Device Based on Paired Emitter-Detector Light Emitting Diodes. An. Ch. Acta. 557:111–116.
• Latha, P., 2013. Simulation of PLC based Smart Street Lighting Control using LDR, Int. Jour. of Latest Trends in Eng. and Techn.,2 (4): 113-121.
• Osram, 2016. Phototransistor BP 103-5. Ozcelik, M.A. 2016. Light Sensor Control for Energy Saving in DC Grid Smart LED Lighting System Based on PV System. Jour. of Optoelect. Adv. Mat., 18(5-6):468-474.
• Singh, S.P., Sathya P. 2014. Measurement of the illuminance using a Signal Conditioning Circuit. Int.Journ. of Eng. Sciences & Research Tech., 3(5):574-578.
• Toufiq, I., Afshari, S., Sandipan, M. 2016. An Experimental Survey of Feedback Control Methodologies for Advanced Lighting Systems. En.Build., 130:600–612.
• Yuwaldi, A., Ikhsan, M. 2017. Dual-axis sun tracker sensor based on tetrahedron geometry. Automat.Construct., 73:175–183 .