Sistem monitoring kualitas udara berbasis IoT = Air quality monitoring system based on IoT

Giannini, Alexander (2020) Sistem monitoring kualitas udara berbasis IoT = Air quality monitoring system based on IoT. Bachelor thesis, Universitas Pelita Harapan.

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Abstract

Penelitian ini membahas tentang sistem monitoring kualitas udara berbasis IoT dengan menggunakan mikrokontoler NodeMCU dan sensor MQ-135. Modul sensor MQ-135 sebagai detektor kualitas udara menghasilkan sinyal untuk diproses oleh mikrokontroler NodeMCU. Modul WiFi ESP8266 yang terintegrasi dengan NodeMCU mengirimkan nilai yang terbaca oleh sensor via internet ke server IoT pada platform Blynk yang merekam data secara berkala. Pengguna melalui telefon cerdas dapat melihat hasil data logging kualitas udara melalui aplikasi Blynk yang terhubung via internet ke server IoT. Sistem monitoring ini dapat berdiri sendiri di luar ruangan dengan sumber energi dari sistem tenaga surya kecil. Sistem yang dibuat dapat mendeteksi keberadaan gas belerang atau sulfurhidroksida (H2S), natrium-(di)oksida (NO2), gas amonia (NH3), alkohol atau ethanol (C2H5OH), karbondioksida (CO2), dan benzena (C6H6). Sistem telah diuji coba dan menunjukkan reaksi terhadap asap dupa, asap rokok, asap kertas yang terbakar, uap alkohol, dan gas buang kendaraan bermotor. Percobaan dalam chamber berupa kotak tertutup berukuran 50cm x 50cm x 40cm menunjukkan bahwa asap selembar kertas 80 gr/m2 berukuran 21 cm x 30cm yang dibakar memberi nilai bacaan sensor sebesar 352 a.u., sedangkan uap alkohol yang berasal dari alkohol cair sebanyak 250 cc pada suatu wadah terbuka menghasilkan nilai bacaan sensor 280 a.u. Eksperimen menunjukkan bahwa tegangan keluaran sensor akan naik jika berinteraksi dengan udara berisi asap, dan akan turun di udara berisi alkohol. / This study discusses an IoT-based air quality monitoring system using a NodeMCU microcontoler and MQ-135 sensor. The MQ-135 sensor module as an air quality detector generates signals which will be processed by the NodeMCU microcontroller. The ESP8266 WiFi module integrated within the NodeMCU sends the value that is read by the sensor via the internet to the IoT server on the Blynk platform which records data periodically. Users via smart phones can see the results of air quality data logging through the Blynk application that is connected via the internet to the IoT server. This monitoring system can be a stand alone system installed in outdoor with energy sources from a small solar power system. The system can detect the presence of sulfurhydroxide (H2S), sodium- (di) oxide (NO2), ammonia (NH3) gas, alcohol or ethanol (C2H5OH), carbon dioxide (CO2), and benzene (C6H6). The system has been tested and shows reactions to incense smoke, cigarette smoke, burned paper smoke, alcohol vapors, and motor vehicle exhaust gases. Experiments in a chamber of closed box measuring 50cm x 50cm x 40cm showed that the smoke of a sheet of burning 80 gr/m2 paper measuring 21 cm x 30cm gave a sensor readout value of 352 a.u., while the alcohol vapor from 250 cc of liquid alcohol put in an open container produced a sensor reading value of 280 a.u. Experiments show that the sensor's output voltage will rise if it interacts with air containing smoke, and will drop in air containing alcohol.

Item Type: Thesis (Bachelor)
Creators:
CreatorsNIMEmail
Giannini, AlexanderUNSPECIFIEDalxandergiannini@gmail.com
Contributors:
ContributionContributorsNIDN/NIDKEmail
Thesis advisorUranus, Henri P.UNSPECIFIEDUNSPECIFIED
Uncontrolled Keywords: Internet of Things; Kualitas Udara; sensor MQ-135; NodeMCU; Blynk
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: University Subject > Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Electrical Engineering
Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Electrical Engineering
Depositing User: Users 3436 not found.
Date Deposited: 21 Feb 2020 03:14
Last Modified: 20 Jul 2020 09:46
URI: http://repository.uph.edu/id/eprint/7728

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