CD Skripsi

Fry Counter Berbasis Sensor Optocoupler Dengan Filter Tegangan Analog

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Indonesia as an archipelagic country with a large water area has the potential for fisheries cultivation. Often there are errors in calculating fry that are done manually and fry counting instruments are relatively expensive and difficult to obtain on the market, so a relatively cheap, simple, high-sensitivity and high accuracy fry counter is needed, therefore, research conducted on fry counters based on Optocoupler Sensor with Analog Voltage Filter. The fry counter uses an optocoupler sensor, namely an infrared LED as a transmitter sensor and a photodiode as a receiver sensor. The research began with designing the sensor holder, electronic circuits and software, characterizing the sensors, filtering, and statistical testing of fish fry counting. Characterization is carried out based on the measurement of the photodiode analog voltage by varying the photodiode resistance from 1 kΩ to 30 kΩ. Measurement of sensor characterization was carried out with four treatment conditions, namely: without water, with still water, with running water and running water with fish. Based on the characterization that has been done, it shows that the value of the photodiode analog voltage (Vp) decreases exponentially as the resistance value of the photodiode increases. The best photodiode resistance in terms of sensitivity and accuracy is in the range of 1 kΩ to 10 kΩ, this can be seen from the results of the sensor characterization where the resistance is above 10 kΩ the photodiode voltage when the sensor is passed by the fry almost coincides with the three previous condition treatments. Filtering noise and water surface refraction uses a low-pass RC filter circuit with a resistance of R = 2.7 kΩ, capacitor C = 100 pF where the cutoff frequency is fc = 595 kHz. Statistical testing with 100 fry samples in the photodiode resistance range of 1 kΩ to 10 kΩ obtained an average error percentage of 1% to 1.6%.
Keywords: Fry counter, optocoupler sensor, infrared, photodiode, high-pass filter, low-pass filter, analog voltage, sensor characterization, variation of resistance

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

03 01.120 (0071)

Penerbit

Pekanbaru : Universitas Riau – FMIPA – FISIKA., 2020

Deskripsi Fisik

xvi, 67 hlm.: ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

03 01.120 (0071)

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

FISIKA

Info Detail Spesifik

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Pernyataan Tanggungjawab

ELFITRA

Versi lain/terkait

Lampiran Berkas

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