Summary:
Published in Sensors 15(7): 17715-17727.
With the advent of smart cities and big data, precision agriculture allows the feeding of sensor data into online databases for continuous crop monitoring, production optimization, and data storage. This paper describes a low-cost, compact, and scalable nitrate sensor based on electrochemical impedance spectroscopy for monitoring trace amounts of NO3− in selected growing media. The nitrate sensor can be integrated to conventional microelectronics to perform online nitrate sensing continuously over a wide concentration range from 0.1 ppm to 100 ppm, with a response time of about 1 min, and feed data into a database for storage and analysis. The paper describes the structural design, the Nyquist impedance response, the measurement sensitivity and accuracy, and the field testing of the nitrate sensor performed within tree nursery settings under ISO/IEC 17025 certifications.
Permanent identifier (DOI):
Sector(s):
Forests
Catégorie(s):
Scientific Article
Theme(s):
Forestry Research, Forests, Seeds and Forest Seedlings Production
Departmental author(s):
Author(s):
GHAFFARI, Seyed Alireza, William-Olivier CARON, Mathilde LOUBIER, Charles-O. NORMANDEAU, Jeff VIENS, Mohammed S. LAMHAMEDI, Benoit GOSSELIN and Younès MESSADDEQ
Year of publication:
2015
Format:
PDF available upon request
How to get the publication:
Keyword(s):
Picea glauca, seeds and forest seedlings production, sensor, electrochemical impedance, growing media, nitrate, white spruce, forest nursery