Please use this identifier to cite or link to this item:

TitleA bulk-micromachined soil moisture probe with a mixed-signal interface
Author(s)Valente, A.
Morais, Raul
Couto, Carlos
Correia, J. H.
KeywordsSoil moisture probe
Mixed-signal interface
Smart sensors
Issue date5-Sep-2002
CitationINTERNATIONAL PORTUGUESE CONFERENCE ON AUTOMATIC CONTROL, 5, Aveiro, 2002 – “Portuguese Conference on Automatic Control : proceedings”. [S.l. : s.n., 2002]. p. 429-433.
Abstract(s)This paper presents a Multi-Chip-Module based (MCM) microsystem for irrigation management suitable for greenhouse environmental control. The proposed microsystem includes a soil moisture microsensor, analog interface and sigma-delta converter, and signal processing for digital filtering. A heat-pulse technique is used to determine the volumetric heat capacity and thus the water content of a porous media, such as the soil. This method is based on the Joule effect (heater probe) and on the Seebeck effect (temperature probe). By using CMOS standard processes (low-cost) and wireless capabilities, a wireless network architecture can be implemented for measuring the soil moisture at the plant root level.
TypeConference paper
AccessOpen access
Appears in Collections:DEI - Artigos em atas de congressos internacionais

Files in This Item:
File Description SizeFormat 
controlo2002.pdfDocumento principal256,68 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID