Automatic Management of Nutrient Solution for Hydroponics-Construction of Multi-ion Stat.
Hydroponics
automatic control system
ion-selective electrodes
nutrient concentration
Journal
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
ISSN: 1348-2246
Titre abrégé: Anal Sci
Pays: Switzerland
ID NLM: 8511078
Informations de publication
Date de publication:
10 Sep 2020
10 Sep 2020
Historique:
pubmed:
21
4
2020
medline:
21
4
2020
entrez:
21
4
2020
Statut:
ppublish
Résumé
In order to improve plant factories, an appropriate control system on fertilization is urgently required. An automatic management system to control nutrient concentration was constructed using a programmable logic controller (PLC) and ion selective electrodes (ISEs) of nitrate, phosphate, and potassium ion. The concentration of nutrient components in a culture solution was monitored using these ISEs. When the concentration of the nutrient components diminished to the threshold set as an optimum condition (0.1 - 2.0 mM), an appropriate amount of a concentrated solution of each nutrient component was added to the culture solution using solenoid valves connected with the PLC. The present cultivation system was simply constructed without any computers and pumps. Three kinds of automatic control systems simultaneously worked and did not influence each other.
Identifiants
pubmed: 32307344
doi: 10.2116/analsci.20A002
pii: 10.2116/analsci.20A002
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1141-1144Références
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