On the controlling of temperature: A proposal for a real-time controller in broiler houses
| Autor: | José Mario Martínez, M. A. Diniz-Ehrhardt, Denise Trevisoli Detsch, Dante Conti |
|---|---|
| Přispěvatelé: | UNIVERSIDADE ESTADUAL DE CAMPINAS |
| Rok vydání: | 2018 |
| Předmět: |
Automatic controller
Poultry industry Frango de corte Agricultural engineering Temperature a Industria avicola law.invention law Control theory Artigo original Production (economics) partial differential equations (PDE) lcsh:Agriculture (General) ventilation systems temperature control Mathematical models Temperature control Controle de temperatura Mathematical optimization 0402 animal and dairy science Broiler 04 agricultural and veterinary sciences Broilers (Chickens) Partial differential equations lcsh:S1-972 040201 dairy & animal science Otimização matemática Modelos matemáticos Equações diferenciais parciais Key factors self-correcting model Ventilation (architecture) 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science optimization |
| Zdroj: | Scientia Agricola v.75 n.6 2018 Scientia Agrícola Universidade de São Paulo (USP) instacron:USP Scientia Agricola, Vol 75, Iss 6, Pp 445-451 Scientia Agricola, Volume: 75, Issue: 6, Pages: 445-451, Published: DEC 2018 Repositório da Produção Científica e Intelectual da Unicamp Universidade Estadual de Campinas (UNICAMP) instacron:UNICAMP |
| ISSN: | 1678-992X |
| DOI: | 10.1590/1678-992x-2016-0456 |
| Popis: | Agradecimentos: This work was supported by the program Pronex of the Brazilian National Council for Scientific and Technological Development (CNPq) and Rio de Janeiro Research Foundation (FAPERJ) E-26/111.449/2010-APQ1, São Paulo Research Foundation (FAPESP) (grants 2010/10133-0, Cepid-Cemeai 2011-51305-02, 2013/03447-6, 2013/05475-7, 2013/07375-0 and 2013/21112-1) and Brazilian National Council for Scientific and Technological Development (CNPq) grant 144669/2013-7 Abstract: Environmental conditions in broiler houses, specifically temperature, are key factors that should be controlled to ensure appropriate environment for broiler rearing. In countries with tropical/subtropical climate, like Brazil, high temperatures produce heat stress to animals, affecting the production process. This research proposes a real-time model to control temperature inside broiler houses. The controller is a self-correcting model that makes real-time decisions on the ventilation system operation (exhaust fans) together with temperature prediction at the facility. The model involves partial differential equations (PDE) whose parameters are updated according to data registered in real-time. Some experiments were carried out at a pilot farm in the municipality of Jundiai, Sao Paulo State, Brazil, for different periods during winter and summer. The results based on simulations in comparison with the current automatic ventilation system show that the model is consistent to keep temperature under control for an efficient production. The model achieved a bias of 0.6 degrees C on average in comparison with the ideal temperature, whereas the automatic controller measured a bias of 3.3 degrees C, respectively. Future lines suggest that this approach could be useful in many other situations that involve environmental control for livestock production CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP FUNDAÇÃO CARLOS CHAGAS FILHO DE AMPARO À PESQUISA DO ESTADO DO RIO DE JANEIRO - FAPERJ Aberto |
| Databáze: | OpenAIRE |
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