A Microcontroller-based Wireless Optical pH Sensor
This item is restricted to only allow viewing of the metadata.
Title
A Microcontroller-based Wireless Optical pH Sensor
Author
Vuppu , Sandeep
Advisors
Morris , Joel M
Program
Engineering, Electrical
UMBC Department
Computer Science and Electrical Engineering
Document Type
thesis
Sponsors
University of Maryland , Baltimore County (UMBC)
Keywords
pH sensor ; microcontroller ; fluorescence ; optical sensor ; portable instrument ; Engineering , Electronics and Electrical (0544)
Date Issued
2008-12-04 ;
Abstract
The development and application of a portable , wireless fluorescence-based optical pH sensor system is presented . The design incorporates the MSP430 microcontroller as the control unit , an RF transceiver for wireless communication , digital filters and amplifiers , and a USB based communication module for data transmission . The pH sensor is based on ratiometric fluorescence detection from 6-methacryloyl-8-hydroxy-1,3-pyrene disulfonic acid (MA-HPDS) sensor patch . The ability of the sensor patch to detect the pH of the solution without physical contact makes the instrument inherently non-invasive . The sensor system also has the ability to transmit data wirelessly , enabling its use in processes that entail stringent temperature control and sterility . The use of the microcontroller makes the system a reliable , low-cost , and low-power device . The luminous intensity of the light source can be digitally controlled to maximize the sensitivity of the system . The sensor system is accurate and reversible over the pH range of 6-9 with an average response time of less than 3 minutes and has a detection limit of 0.05 pH .
Identifier
1285
Format
application:pdf
Language
en
Collection
UMBC Theses and Dissertations
Rights Statement
This item may be protected under Title 17 of the U.S. Copyright Law. It is made available by UMBC for non-commercial research and education. For permission to publish or reproduce, please see http://aok.lib.umbc.edu/specoll/repro.php or contact Special Collections at speccoll(at)umbc.edu.
Source
umi-umbc-1285.pdf
Access Rights
Access limited to the UMBC community. Item may possibly be obtained via Interlibrary Loan through a local library, pending author/copyright holder's permission.
Add tags for A Microcontroller-based Wireless Optical pH Sensor
Your comment:
Your Name:
...
