Avaliação da transmissão de dados de temperatura no sistema 1-wireTM
Loading...
Files
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Engenharia Agrícola
Abstract
A necessidade de sistemas de monitoramento automático versáteis e de baixo custo que possam auxiliar o produtor agrícola na otimização dos processos produtivos, é evidente. Este trabalho foi realizado com o objetivo de pesquisar as limitações e as potencialidades de aplicação do sistema 1- wire TM na transmissão de dados de temperatura em instalações agrícolas. O sistema 1-wire TM é uma rede de transmissão de dados que possibilita a comunicação digital entre um computador e dispositivos da série 1-wire TM , tais como os sensores de temperatura DS1820. A transmissão de dados de temperatura nesse sistema foi avaliada em função do tipo dos condutores e do número de sensores DS1820. Com base nos resultados, concluiu-se que o aumento do número de sensores de temperatura DS1820 no sistema 1-wire TM incrementa a carga capacitiva de maneira distinta para cada um dos tipos de condutores estudados, podendo causar interrupções na transmissão de dados.
The need of versatile and low cost automatic monitoring systems for the optimization of the agricultural productive processes is evident. This work was carried out to evaluate the limitations and potentialities of the 1-wire TM system for temperature data transmission in agricultural buildings. The 1-wire TM system is a data transmission network, which makes possible the digital communication between a computer and devices of the 1-wire TM series, such as the temperature DS1820 sensors. The temperature data transmission in this system was evaluated as a function of types of conductors and the number of DS1820 sensors. Based on the results, it was concluded that, by increasing the number of the DS1820 temperature sensors in the 1-wire TM system, the capacitive load increases in a different way for each conductor and can cause interruptions during temperature data transmission.
The need of versatile and low cost automatic monitoring systems for the optimization of the agricultural productive processes is evident. This work was carried out to evaluate the limitations and potentialities of the 1-wire TM system for temperature data transmission in agricultural buildings. The 1-wire TM system is a data transmission network, which makes possible the digital communication between a computer and devices of the 1-wire TM series, such as the temperature DS1820 sensors. The temperature data transmission in this system was evaluated as a function of types of conductors and the number of DS1820 sensors. Based on the results, it was concluded that, by increasing the number of the DS1820 temperature sensors in the 1-wire TM system, the capacitive load increases in a different way for each conductor and can cause interruptions during temperature data transmission.
