Abstract
Terrestrial laser scanning (TLS) is currently one of the most progressively developed methods in obtaining information about objects and phenomena. This paper assesses the TLS possibilities in determining the driver’s field of vision in operating agricultural and forest machines with movable and immovable components in comparison to the method of using two light point sources for the creation of shade images according to ISO (International Organization for Standardization) 5721-1. Using the TLS method represents a minimum time saving of 55% or more, according to the project complexity. The values of shading ascertained by using the shadow cast method by the point light sources are generally overestimated and more distorted for small cabin structural components. The disadvantage of the TLS method is the scanner’s sensitivity to a soiled or scratched cabin windscreen and to the glass transparency impaired by heavy tinting.
Highlights
Drivers of agricultural and forest machinery and/or equipment for earth-moving work operate movable machine components such as front-end adapters for handling the load with attached or mounted devices—often in the environment with natural or artificial obstacles requiring good orientation
The method of establishing the driver’s field of vision by terrestrial laser scanning according to ISO 5721-1:2013 wasand tested on three types of working machines: the agricultural tractor, the harvester and the forwarder
The accuracy of the scanner used in the terrestrial laser scanning method is two orders higher
Summary
Drivers of agricultural and forest machinery and/or equipment for earth-moving work operate movable machine components such as front-end adapters for handling the load with attached or mounted devices—often in the environment with natural or artificial obstacles requiring good orientation. In such conditions, the quality of the vision from the cabin of these operating machines affects the drivers’ work performance and the safety of their labour. A survey conducted by Caisse Nationale d’Assurance Maladie (French National Insurance Fund) on earth-moving machines showed, for example, that a third of serious and fatal accidents are caused by the lack of visibility from the driver’s cab [1]. We can distinguish a direct field of vision (given by direct visibility) and an indirect field of vision (assisted by mirrors or other visual aids)
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