Affiliation:
1. Federal Scientific Agroengineering Center VIM
Abstract
The purpose of the study is to develop and test the performance of the method of using the optical module for determining the biometric parameters of the udder. There have been developed: a scheme of test stand with a 3-D camera of the optical module for taking 3-D images in the system of digital valuation of the udder of dairy cows; a mathematical model for determining the biometric parameters of the udder and teats, namely: length, diameter of the angles of inclination in two planes of the teats, distance between the teats, scattering from the optical module to the teats, 26 parameters in total. An algorithm for determining the biometric parameters of the udder has been developed. Experiments with the stand and processing of field data were carried out in the Animal Husbandry Department of the FSAC VIM in 2022. In addition, field data were collected on farms: IP KFH Sirota (Moscow region), FSUE Grigorievskoye (Yaroslavl region), Farm Ryabtsevo LLC (Kaluga region) – in total, natural material for 192 animals has been collected. The performance of the developed method was tested on an artificial udder. The mode of operation in determining the biometric parameters of the teats was carried out: the speed of obtaining threedimensional udder maps was 5 frames per 1 second. The angle of rotation of the camera relative to the teats in the 0ZX plane was 30º. According to the results of the experimental studies it has been established that the measured results for 24 out of 26 parameters have an error of less than 5%, the diagonal distance between the teats has an error of 6.0 %, the lateral left distance between the anterior and posterior row of teats has an error of 12.7 %. The measurement error of the distance to the tip of the teats is in the range from -0.004 m to -0.007 m on the Z axis.
Publisher
FARC of the North-East named N.V. Rudnitskogo
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