Evaluación de los sensores ultrasonicos para medidas a copa en olivar

• A. Miranda Fuentes ^[1] ; J.L. Gamarra Diezma ^[1] ; A. Cuenca ^[1] ; J. Llorens ^[1] ; A. Rodriguez Lizana ^[2] ; A. Guillén Dana ^[1] ; G.L. Blanco Roldán ^[1] ; J.A. Gil Robles ^[1]
  1. [1] Universidad de Córdoba

     Universidad de Córdoba

     Cordoba, España

     
  2. [2] Universidad de Sevilla

     Universidad de Sevilla

     Sevilla, España

     
• Localización: VIII Congreso Ibérico de agroingeniería: Retos de la nueva agricultura mediterránea. Libro de actas / coord. por Ricardo Abadía Sánchez, María Carmen Rocamora Osorio, Herminia Puerto Molina, 2016, ISBN 978-84-16024-30-8, págs. 889-896
• Idioma: español
• Títulos paralelos:
  • Testing ultrasonic sensors for canopy measurement in olive
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• Resumen

  • Ultrasonic sensors have been widely used to measure distance in field conditions because of their toughness and low cost. In the case of olive, especially in the traditional crop system, the use of long-range sensors is mandatory due to the long tree spacing that make necessary to measure long distances. The aim of the study was to evaluate, for olive tree canopies, a long-range ultrasonic sensor (0.4 - 6 m) in laboratory and field conditions for different problems already reported in the bibliography. It was determined the width of the sound cone and the interference between two sensors measuring simultaneously. Results show that the sound cone is narrower for olive canopy than for other materials, what makes measurements more accurate in this case. As to the interference, it was determined that, when mounted on a vertical mast, the minimum sensor spacing to avoid interference problems should be 1.3 m. Furthermore, it was confirmed that the laboratory calibration is completely valid for real field conditions.