Design and fabrication of bluetooth AC digital multimeter
Date
4-2014
Degree
Bachelor of Science in Electrical Engineering
Major Course
Major in Electronics Engineering
College
College of Engineering and Agro-Industrial Technology (CEAT)
Adviser/Committee Chair
Adrian Augusto M. Sumalde
Abstract
The study focused on the design and fabrication of a Bluetooth AC Digital Multimeter.The design is composed of the analog front-end block data processing block and the transmission block. The analog front-end block was composed of the AC voltage and AC current sensing circuits that converts AC parameters into small DC voltages for the ADC . The data processing block features a gizDuino+mimi board with ATmega 64 microcontroller that interprets the data relates them back into AC parameters. The controller board also prepares the signals for Bluetooth communication. The transmission block is composed of the EGBT-045MS module. The blocks were integrated on a single-sided 4"x6" PCB and housed on a custom plastic enclosure. Test leads connected to the jacks of the board served as the input. Initial tests showed that the ADC can sense the voltage levels derived from the AC parameters. An Arduino code developed in Arduino Development Environment instructs the meter to send values depending on the incoming serial data. The program was uploaded to the MCU. The software developed by Ilang-Ilang (2013) serves as the PC interface. Tests using the fabricated meter showed that the measured parameters were comparable to that of a digital multimeter. However, the readings can be further improved by integrating noise reduction techniques and coding. The design was extended to a system of three meters that can interact to a single PC.
Language
English
Location
UPLB Main Library Special Collections Section (USCS)
Call Number
LG 993.5 2014 E64 N37
Recommended Citation
Narvaez, Mark Louie M., "Design and fabrication of bluetooth AC digital multimeter" (2014). Undergraduate Theses. 2330.
https://www.ukdr.uplb.edu.ph/etd-undergrad/2330
Document Type
Thesis