A SYSTEM OF SENSORS AND ACTUATORS PREVENTING ANIMALS FROM INJURIES DURING THE GRASSLAND HARVESTING

Niel, K. (Speaker)

Activity: Talk or presentationOral presentation

Description

During the harvesting process-especially in spring time-animals are in danger of being injured or killed by agricultural machines e.g. mowers cutting and collecting grass. Every year a large number of fawns are killed because their instinct does not allow them to flee from the approaching machines. There are some important reasons to protect fawns: not to contaminate the grass, not to blunt the knives, and last but not least not to kill the very young animals. Several systems for detecting animals in a hayfield are available. They differ in usability, comparativeness, sensor technology, and automation capabilities. Our approach consists of a row of optical sensors mounted in front of a grassland mower. The measuring line corresponds to the total working width of the mower. While the measuring line crosses live animals, they are detected within a time period of 20 ms by means of their certain optical features. The detection signal immediately triggers the hydraulic lifting process of the mower mounted at the tractor. This procedure prevents the injury of the animal up to a tractor speed of 13 km/h. The optical sensor detects the live animal due to its surface reflectance in certain wavelengths. The sensor system also includes an artificial light source to be independent from the ambient light (morning/evening light conditions). Several tests have been carried out in the last few seasons to ensure the reliability of the system.
Period7 Oct 2018
Event titleAgroSym: null
Event typeConference
LocationJahorina, Bosnia and Herzegovina