Monitoring of carbon monoxide (CO) level of a public transport vehicle in selected areas of Los Baños using an arduino-based portable handheld instrument

Date

4-2013

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Nelio C. Altoveros

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

Carbon monoxide contributes to air pollution. These were reported cases where this kind of gas caused deaths. In line with this, a Carbon Monoxide (CO) handheld instrument controlled by Arduino Microcontroller was developed. This handheld device includes an MQ7 Carbon Monoxide Sensor, SD Card shield, SC204A LCD Panel, EM406A Global Positioning System (GPS) module, an LM35 temperature sensor.The actual time (s) and date, CO concentration (ppm), temperature (°C), latitude and longitude coordinate parameters of the test sites were stored in an SD Card and also displayed on the LCD panel. This instrument was used to measure CO concentration on selected areas in Los Baños. The accuracy and uncertainty of the measured latitude and longitude coordinates of the GPS module used were approximately ±5 - 10 meters. The instrument was programmed to gather data for every 90 seconds after heating the sensor for 60 seconds. For the calibration part, the sensor readings were compared to those of Fofen Machine in W8V Emission Testing Center in Anos, Los Baños. The position of the sensor and the device from the emission center were half an inch away from the end of the tailpipe of the vehicles being measured. To check the validity of the data gathered, 13 measurements were taken from different types of vehicles such as cars and motorcyles. The standard deviation and the percent error for each kind of vehicle such as cars and motorcycles. The standard deviation and the percent error for each kind of vehicle was computed. The instrument showed that CO levels in a normal trip on a public vehicle from College, Los Baños to Olivarez Mall, Los Baños range from 25 ppm to 60 ppm which is above the standard Threshold Limit Value (TLV) of 35 ppm.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 2013 P51 /D45

Document Type

Thesis

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