Design, Build, and Aanalytical Simulation of Carbon Monoxide Gas Emission Measuring Instrument Based on Smartphone with Linear Regression Approach

Abstract

To find out the level of carbon monoxide gas emission in motor vehicles, we need a tool that can measure these conditions. So in this study made a measuring tool for carbon monoxide gas emission levels in motor vehicles. This measurement tool uses the TGS 2442 sensor. While Arduino Uno as a microcontroller and signal processor, and Android smartphone as a data viewer. Based on the sensor testing obtained, the graphs obtained linear equations when measuring carbon monoxide levels in BK 6776 PAN cars y_reg = 38.436-0.0641x with standard deviation values (δ) = 10.816, uncertainty values of measurement results (UA_1) = 6.245 and uncertainty values regression approach UA_2 = 1.02 and on vehicles with BK 6281 AAG y_reg = -3371 + 1.03x with a standard deviation value (δ) = 157.25, the uncertainty value of the measurement results (UA_1) = 90.788 and the uncertainty value of the UA_2 regression approach = 28185.05 and on vehicles BK 3181 MAM y_reg = -24.48 + 0.001x with a standard deviation value (δ) = 99.168, the uncertainty value of the measurement results (UA_1) = 57.255 and the uncertainty value of the regression approach UA_2 = 3824.05. Retrieval of data on the measuring instrument that the standard deviation value at 10 seconds is 2375.32, at 12 seconds is 3318.42, and at 15 seconds is 2639,813. The measurement uncertainty value at 10 seconds is 1371.39, at 12 seconds is 1915.89 and at 15 seconds is 1524.1