Commenced in January 2007
Paper Count: 31819
Design of Measurement Interface and System for Ion Sensors
Abstract:A measurement system was successfully fabricated to detect ion concentrations (hydrogen and chlorine) in this study. PIC18F4520, the microcontroller was used as the control unit in the measurement system. The measurement system was practically used to sense the H+ and Cl- in different examples, and the pH and pCl values were exhibited on real-time LCD display promptly. In the study, the measurement method is used to judge whether the response voltage is stable. The change quantity is smaller than 0.01%, that the present response voltage compares with next response voltage for H+ measurement, and the above condition is established only 6 sec. Besides, the change quantity is smaller than 0.01%, that the present response voltage compares with next response voltage for Clmeasurement, and the above condition is established only 5 sec. Furthermore, the average error quantities would also be considered, and they are 0.05 and 0.07 for measurements of pH and pCl values, respectively.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1076262Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1466
 J. V. der Spiegel, I. Lauks, P. Chan, and D. Babic, "The extended gate chemical sensitive field effect transistor as multi-species microprobe," Sensors and Actuators B, vol. 4, pp. 291-298, 1983.
 L. T. Yin, J. C. Chou, W. Y. Chung, T. P. Sun, and S. K. Hsiung, "Separate structure extended gate H+-ion sensitive field effect transistor on a glass substrate," Sensors and Actuators B, vol. 71, pp. 106-111, 2000.
 L. T. Yin, J. C. Chou, W. Y. Chung, T. P. Sun, and S. K. Hsiung, "Study on extended gate field effect transistor with tin oxide sensing membrane," Materials Chemistry and Physics, vol. 63, pp. 19-23, 2000.
 L. T. Yin, J. C. Chou, W. Y. Chung, T. P. Sun, and S. K. Hsiung, "Study of indium tin oxide thin film for separative extended gate ISFET," Materials Chemistry and Physics, vol. 70, pp. 12-16, 2001.
 C. W. Pan, J. C. Chou, T. P. Sun, and S. K. Hsiung, "Development of the real-time pH sensing system for array sensors," Sensors and Actuators B, vol. 108, pp. 870-876, 2005.
 A. S. Abdul Rahman, M. M. Sim Yap, A. Y. Md. Shakaff, M. N. Ahmad, Z. Dahari, Z. Ismail, and M. S. Hitam, "A microcontroller-based taste sensing system for the verification of Eurycoma longifolia," Sensors and Actuators B, vol. 101, pp.191-198, 2004.
 H. D. Park, K. J. Lee, H. R. Yoon, and H. H. Nam, "Design of a portable urine glucose monitoring system for health care," Computer in Biology and Medicine, vol. 35, pp.275-286, 2005.
 C. M. Lin, "An 8-bits RISC microprocessor design for ISFET-based hand-held pH-meter signal process applications," Master Thesis, Institute of Electronic Engineering, Chung-Yuan Christian University, 2006.
 I. Turkoglu, "Hardware implementation of varicap diode-s ANN model using PIC microcontrollers," Sensors and Actuators B, vol. 138, pp. 288-293, 2007.
 P. Y. Ts'eng, Microprocessors fundamentals and applications using C language and PIC18 microcontrollers, Wu-Nan Book Inc., Taiwan, pp. 1-32, 2007, ch. 1.
 Microchip Technology Incorporation. http://www.microchip.com
 The 18F4520 data sheet of Microchip Technology Incorporation.
 J. S. Lee, H. J. Yoon, G. Cui, J. H. Shin, H. Nam, and G. S. Cha, "Hydrophilic polyurethane-coated chloride-selective electrodes," United States Patent, US 6350524B1, 2002.
 R. Borgmann-Strahsen, "Comparative assessment of different biocides in swimming pool water," International Biodeterioration & Biodegradation, vol. 51, pp. 291-297, 2003.
 X. Li, M. Ju, X. Li, "Chlorine ion sensor based on polyaniline film electrode," Sensors and Actuators B, vol. 97, pp. 144-147, 2004.
 F. J. D. Campo, O. Ordeig, and F. J. Munoz, "Improved free chlorine amperometric sensor chip for drinking water applications," Analytica Chimica Acta, vol. 554, pp. 98-104, 2005.
 F. Hahn, "Novel valve for automatic calibration of a chloride sensor for river monitoring," Biosystems Engineering, vol. 92, pp. 275-284, 2005.
 J. C. Chou, C. W. Chen, and P. L. Chou, "Fabrication of ruthenium oxide thin film and response characteristic for hydrogen ion," Proceedings for Annual Meeting of Physical Society of The Republic of China, vol. 29, PB-23, p. 256, 2007.
 P. L. Chou, "Fabrication of ion sensing device based on ruthenium oxide thin film and analysis for characteristics of sensing system," Master thesis, Graduate School of Optoelectronics, National Yunlin University of Science and Technology, 2007.
 J. C. Chou, C. C. Lee, "Application of microcontroller based on portable measurement device for ion sensor," 2008 International Electron Devices & Materials Symposia, Taichung, Taiwan, 4 page (disk), 2008.