| dc.description.abstract | The purpose of this research is to obtain monitoring system and pH data recording
system based on microcontroller Arduino Mega 2560 and to obtain a Human
Machine Interface (HMI) that is suitable for monitoring the pH from the process of
conversing POME into biogas on a laboratory scale using Arduino and LabVIEW
software. This study is consisted of two stages, which is: the hardware design and
software design. At the hardware design, microcontroller Arduino Mega 2560 is
connected with fermenter and a laptop / PC. The software design is consisted of
designing HMI at the LabVIEW program. The results indicated that the components
that are suitable for monitoring the process of conversing POME are the
microcontroller Arduino Mega 2560, pH sensor data acquisition module and 5 volt
power source, as well as a pH probe sensor. For HMI design using LabVIEW 2014 is
in accordance with the needs with the graphic display of pH condition in real time
from a fermenter and the data logger was automatically stored in the Microsoft
Excel. After completing the design of HMI, sensor that is used is calibrated to
obtained a linear equation of analog data versus pH data from buffer solutions so that
the first equation can be inputted into the program Arduino which is pH = 4.9578×V
and the second equation is pH = 4.9883×V. Afterward, the research was conducted
for 3 days with a variation of data taking distance 1, 5, and 10 seconds. This research
result shows that experiment data is appropriate with secondary data until the 81th
hour which then the pH probe sensor needs to be cleaned frequently with at least a
50oC hot water and continued with recalibration. | en_US |
