Calibration of sensors for hydraulical vertical penetrometer

• Published in: Acta Technologica Agriculturae (Slovak Republic) Vol. 14; no. 2
• Main Authors: Boďo, T., Slovak University of Agriculture in Nitra (Slovak Republic), Bajla, J, Šinský, F
• Format: Journal Article
• Language: English
• Published: 2011
• Subjects: CALIBRACION; CALIBRAGE; CALIBRATION; DESEMPENO DE LA MAQUINARIA; ENSAYO DE MAQUINAS; EQUIPMENT PERFORMANCE; EQUIPMENT TESTING; ESSAI DE MATERIEL; http://www.fao.org/aos/agrovoc#c_25723; http://www.fao.org/aos/agrovoc#c_25787; http://www.fao.org/aos/agrovoc#c_25788; http://www.fao.org/aos/agrovoc#c_36549; http://www.fao.org/aos/agrovoc#c_4668; http://www.fao.org/aos/agrovoc#c_7199; MEASUREMENT; MEDICION; MESURE; PENETROMETERS; PENETROMETRE; PENETROMETROS; PERFORMANCE DU MATERIEL; SOIL TEXTURE; TEXTURA DEL SUELO; TEXTURE DU SOL
• ISSN: 1335-2555

The contribution deals with the design of penetration device, hydraulically operated and carried by the three point hitch of tractor. This system uses several force sensor associated with control unit. Measuring equipment has got attached a GPS system for measuring the position of the measuring probes and for defining the position of measurement in field. Before the experiments, it is necessary to calibrate the sensors after their inclusion in the measurement chain. This achieve the elimination of systemic errors and setting errors of measuring system, an overview of the measurement accuracy, which affects the sensor measurement error at different values of load forces, or amplifying member in the measuring apparatus. Involvement of the whole measurement chain, in our case the system: measuring probe-sensor - control unit-computer, may cause differences in measurements. Calibration of the sensors carry out for us the functional tests of equipment designed for field experiments.