| Journal: | Journal of applied research and technology |
| Database: | PERIÓDICA |
| System number: | 000395663 |
| ISSN: | 1665-6423 |
| Authors: | Manjarrés, Claudia1 Garizado, David1 Obregón, María1 Socarrás, Natalia1 Calle, Maria1 Jiménez Jorquera, Cecilia2 |
| Institutions: | 1Universidad del Norte, Barranquilla, Atlántico. Colombia 2Consejo Superior de Investigaciones Científicas, Centro Nacional de Microelectrónica, Barcelona. España |
| Year: | 2016 |
| Season: | Feb |
| Volumen: | 14 |
| Number: | 1 |
| Pages: | 1-8 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Aplicado, descriptivo |
| English abstract | Monitoring of water sources is a major concern worldwide. Wireless sensor networks (WSN) may be used for this monitoring. However, current systems employ mainly physical sensors for variables such as temperature, pressure, humidity and light. Wireless chemical sensors networks (WCSNs) for environmental monitoring are scarce due to the lack of autonomy of conventional sensors. This paper presents results of a WCSN for monitoring pH based on ion selective field effect transistors (ISFETs). Sensing nodes employ a human interface required for in situ calibration of chemical sensors. Unlike most studies, our work evaluates the network employing chemical measurements and wireless network metrics. Results show zero packet losses by using a time division multiple access (TDMA) protocol. The network allows wireless communication within 300 m including attenuation from buildings and trees. Therefore, the system presented in this paper is suitable for long range applications with unobstructed line of sight. pH measurements present a standard deviation below 1%, showing high repeatability. When compared to a commercial pH meter, difference in measurements is below 5%. As a consequence, accuracy is adequate for the application. Measurements also presented high stability during 3 h of continuous measurement |
| Disciplines: | Ingeniería |
| Keyword: | Ingeniería ambiental, Ingeniería química, Recursos hídricos, Calidad del agua, Sensores químicos, pH, Redes de sensores inalámbricos |
| Keyword: | Engineering, Chemical engineering, Environmental engineering, Water resources, Water quality, Chemical sensors, pH, Wireless sensor networks |
| Full text: | Texto completo (Ver HTML) |
