A new method for checking the driving visibility on hydraulic excavators

A method for assessment of degradation of task visibility from operator cabins of field machines

“…For example, cabin pillars of 50, 75 and 100 mm were noted to mask the operator field of view by 58%, 55% and 64%, respectively, at an angle of 251. Trends similar to this were observed also in Hella et al (1991) in the evaluation of the field of view for an excavator.…”

“…Apart from locating the blind areas associated with specific machines and machine features, this may also allow for a quantified assessment of ergonomic features related to operator-workspace interaction. In this regard, Hella et al (1991) developed a technique based on photography of the field of view (Hella et al, 1991). Two-dimensional visibility photographs of 15 machines were taken using a special camera, which did not deform the cylinder of vision, and hence allowed for surface analysis without a reference screen.…”

Using virtual computer analysis to evaluate the potential use of a camera intervention on industrial machines with line-of-sight impairments

“…Previous LOS evaluations occurred in the field and required substantial time and resources with little versatility in the plots that were produced (Hella et al, 1991;Eger et al, 2004). A new laser-scanning method introduced by Bhattacherya et al (2007) demonstrated good correspondence to the light filament method (range of error from 1.7% to 5.2%) used by Eger et al (2004) and had the added advantage of being a significantly faster method of evaluation.…”

The Use of Terrestrial Laser Scanning for Determining the Driver’s Field of Vision

“…A driver’s poor vision of the operating machine caused by an inappropriate design of the driver’s cabin of a movable component can lead to property damage or industrial accidents. 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 ].…”