Prototipe sistem peringatan dini berbasis SMS untuk mendeteksi kenaikan kadar gas amoniak di pengolahan air limbah industri penyamakan kulit

Wahyu Pradana Arsitika; Rihastiwi Setiya Murti

doi:10.20543/mkkp.v29i1.219

Prototipe sistem peringatan dini berbasis SMS untuk mendeteksi kenaikan kadar gas amoniak di pengolahan air limbah industri penyamakan kulit

Wahyu Pradana Arsitika, Rihastiwi Setiya Murti

Abstract

ABSTRACT
The objective of this research was to produce prototype of an early warning system based
on SMS for detection the rising level of ammonia gas in wastewater treatment of leather tanning
industry. The systems consist of three parts, those were data input, data processing, and output.
Ammonia gas sensor as a detector that produces an analog Direct Current (DC) voltage. Analog
to Digital Converter (ADC) pin on the microcontroller received an analog DC voltage to be
processed. ADC readings done through the Liquid Crystal Display (LCD) while the Global
System for Mobile Communications (GSM) modem was used to send Short Massage Service
(SMS). This early warning system worked by determining a threshold value. SMS would be sent to
hand phone number of job holder, if the ADC value exceeded the specified threshold value. Result
obtained was the ammonia gas sensor model are MQ137 based on SnO , Arduino Uno as 2
microcontroller module based on Atmega 328P microcontroller, and General Packet Radio
Service (GPRS) Shield as GSM modem that compatible with the Arduino Uno R3 pin.

Keywords: wastewater treatment, tanning industry, amonia gas, SMS, MQ 137

ABSTRAK
Tujuan penelitian ini adalah untuk mendapatkan sebuah rancang bangun (prototipe) sistem
peringatan dini melalui SMS atas kenaikan aras gas amoniak di pengolahan air limbah industri
penyamakan kulit. Sistem ini terdiri dari data masukan, pengolah data, dan keluaran. Sensor gas
amoniak sebagai detektor menghasilkan tegangan listrik arus searah (DC) analog. Pin converter
digital ke analog (ADC) pada mikrokontroler menerima tegangan listrik DC analog untuk
selanjutnya diolah. Pembacaan ADC dilakukan melalui Liquid Crystal Display (LCD)
sedangkan modem Global System for Mobile Communications (GSM) berfungsi untuk
mengirimkan SMS. Sistem peringatan dini bekerja berdasarkan penentuan nilai ambang batas
aras gas amoniak. Apabila pembacaan detektor melebihi nilai ambang batas aras gas amoniak
yang ditentukan, maka peringatan dini akan dikirimkan lewat SMS kepada nomor petugas. Hasil
yang diperoleh adalah sensor gas amoniak model MQ137 dengan bahan dasar SnO , modul 2
mikrokontroler berupa Arduino Uno versi R3 berbasis mikrokontroler Atmega 328P, modem
GSM model General Packet Radio Service (GPRS) Shield yang sesuai dengan pin Arduino Uno
versi R3.

Kata kunci: pengolahan air limbah, industri penyamakan, gas amoniak, SMS, MQ137

Full Text:

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DOI: http://dx.doi.org/10.20543/mkkp.v29i1.219