RANCANG-BANGUN PROTOTYPE SISTEM KONTROL PINTU BERBASIS MIKROKONTROLER AT89S51 MENGGUNAKAN KARTU BER-PASSWORD DAN SENSOR FOTODIODA

Authors

  • Wildian - Jurusan Fisika Universitas Andalas, Indonesia

DOI:

https://doi.org/10.25077/jif.2.2.74-80.2010

Abstract

Telah dilakukan rancang-bangun prototype sistem buka-tutup pintu berbasis mikrokontroler AT89S51 menggunakan kartu ber-password dan sensor fotodioda. Kartu ber-password ini dibuat dari kartu ATM bekas yang diberi lubang dengan jumlah, posisi, dan jarak tertentu. Dengan menggunakan sistem sensor yang terdiri dari 8 pasang LED-fotodioda (jarak deteksi antara 4,7 cm hingga 5,2 cm), maka kartu ber-password yang disisipkan di antara LED dan fotodioda itu memiliki kode password 8-bit sesuai posisi dan jumlah lubang. Bagian kartu yang berlubang akan menyebabkan keluaran fotodioda low (antara 0 V hingga 1,5 V)., sedangkan bagian yang tak berlubang akan menyebabkan keluaran fotodioda high (antara 4 V hingga 4,5 V). Data digital 8-bit ini kemudian dibandingkan oleh mikrokontroler dengan data acuan yang telah disimpan di memorinya. Jika sesuai, maka mikrokontroler akan mengirimkan sinyal untuk membuka pintu, dan jika tidak sesuai, pintu akan tertutup.

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References

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Published

2010-09-16

How to Cite

-, W. (2010). RANCANG-BANGUN PROTOTYPE SISTEM KONTROL PINTU BERBASIS MIKROKONTROLER AT89S51 MENGGUNAKAN KARTU BER-PASSWORD DAN SENSOR FOTODIODA. JURNAL ILMU FISIKA | UNIVERSITAS ANDALAS, 2(2), 74–80. https://doi.org/10.25077/jif.2.2.74-80.2010

Issue

Vol. 2 No. 2 (2010): September 2010

Section

Riset Artikel

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