Rancang Bangun Sound Level Meter Berbasis Mikrokontroler AT89S51

Authors

  • Wildian - Jurusan Fisika Universitas Andalas, Indonesia

DOI:

https://doi.org/10.25077/jif.1.1.31-38.2009

Abstract

Bising merupakan bunyi yang termasuk dalam kategori polutan lingkungan dan dapat mengganggu kesehatan. Untuk mengukur tingkat kuat bunyi kebisingan ini diperlukan sound level meter. Telah dilakukan rancang bangun sound level meter berbasis mikrokontroler AT89S51 dengan mikrofon sebagai sensor dan 7-segment sebagai penampil. Intensitas bunyi diubah menjadi tegangan analog dengan menggunakan mikrofon , dan dikondisikan dengan menggunakan penguat tak-membalik (non-inverting amplifier) serta rangkaian detektor puncak (peak detector). Sinyal analog keluaran rangkaian ini diubah menjadi sinyal digital dengan menggunakan ADC0804, dan kemudian diolah lebih lanjut oleh mikrokontroler AT89S51 dengan menggunakan bahasa assembly untuk ditampilkan pada penampil 7-segment. Sound level meter hasil rancangan ini dapat digunakan untuk mengukur tingkat intensitas bunyi hingga 105,3 dB, dengan kesalahan relatif maksimum sebesar 2,9%

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References

Agfianto, E.P., 2004, Belajar Mikrokontroler AT89C51/52/55 (Teori dan Aplikasi), Gava Medika, Yogyakarta

Buchla, D., and McLachlan, W., 1992, Applied Electronic Instrumentation And Measurement, Prentice-Hall, Englewood Cliffs, New Jersey

Gabriel, J.F., 2001, Fisika Lingkungan, Hipokrates, Jakarta

Giancoli, D.C, 1991, Physics Principles with Application, 3rd Edition, Prentice-Hall , Englewood Cliffs, New Jersey

Malvino, A.P, 1985, Prinsip-prinsip Elektronika, Jilid 2, Erlangga, Jakarta

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Published

2009-03-30

How to Cite

-, W. (2009). Rancang Bangun Sound Level Meter Berbasis Mikrokontroler AT89S51. JURNAL ILMU FISIKA | UNIVERSITAS ANDALAS, 1(1), 31–38. https://doi.org/10.25077/jif.1.1.31-38.2009

Issue

Vol. 1 No. 1 (2009): March 2009

Section

Riset Artikel

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