Pengaruh Media terhadap Transmisi Suara Nirkabel menggunakan Laser Pointer Hijau

Latifah, Umi (2021) Pengaruh Media terhadap Transmisi Suara Nirkabel menggunakan Laser Pointer Hijau. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada penelitian ini dilakukan analisis media terhadap transmisi suara yang dihasilkan oleh sistem transmisi nirkabel menggunakan laser pointer. Laser yang digunakan adalah laser dioda dengan panjang gelombang 532 nm. Variasi media yang digunakan pada penelitian ini adalah udara, air, dan air methylene blue dengan kekeruhan 5 ppm pada jarak 50 cm. Sensor yang digunakan sebagai receiver pada penelitian ini adalah fotodioda. Penelitian transmisi suara dilakukan pada rentang frekuensi audiosonik, yaitu 20 - 20.000 Hz. Dari penelitian diperoleh bahwa hubungan intensitas cahaya terhadap jarak pengukuran adalah eksponensial turun, dengan persamaan 〖y =5025,6e〗^(-11,88x). Pengukuran intensitas cahaya terhadap tegangan fotodioda diperoleh persamaan eksponensial 〖y =5025,6e〗^(-11,88x) yang digunakan untuk mengkonversi tegangan fotodioda ke intensitas cahaya. Komunikasi suara menggunakan modulasi frekuensi, karena media tidak berpengaruh terhadap frekuensi tetapi berpengaruh terhadap bentuk sinyalnya.
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In this study, media analysis of the sound transmission produced by a wireless transmission system using a laser pointer was carried out. The laser used is a diode laser with a wavelength of 532nm. The variation of the media used in this study was air, water, and methylene blue water with a turbidity of 5 ppm. The sensor used as a receiver in this study is a photodiode. So that previously characterization was carried out to determine the ability of the photodiode to receive light. The research was conducted in the audiosonic frequency range, which is 20-20.000 Hz. From the research, it is found that the relationship between light intensity and distance is exponentially decreasing, with the equation 〖y =1179,8e〗^(-10,193x). The Measurement of light intensity against photodiode voltage obtained an exponential equation 〖y =5025,6e〗^(-11,88x)which is used to convert photodiode voltage to light intensity. communication uses frequency modulation, because the media does not affect the frequency but affects the shape of the signal

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	frequency, media, photodiode, transmission, wireless
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5103.2 Wireless communication systems. Two way wireless communication T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5102.5 Modulation (Electronics), Demodulation (Electronics)
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	UMI LATIFAH
Date Deposited:	12 Aug 2021 08:32
Last Modified:	12 Aug 2021 08:32
URI:	http://repository.its.ac.id/id/eprint/85724

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