| 摘要 |
PROBLEM TO BE SOLVED: To detect a work site that is a work target accurately for each movement route without being affected by wrong location information, even when erroneous positioning of location information occurs due to positioning errors.SOLUTION: A location detection device 100 performs grouping of continuous location information P for each of a plurality of pieces, and adopts the majority of work sites which location information P included in the same group indicates as a true work site. Thus, the location detection device 100 divides a movement route for each distance which becomes sufficiently longer than an error margin (S11), and identifies work site candidates from the location information P included in the divided movement route (S12). Therefore, fields A and B which location information P1 to P6 indicate, and the field A which location information P7 to P11 indicate will become the work site candidates in group 1 and in group B, respectively. As a result, the location detection device 100 determines the work site which becomes the majority as a work site in which the work is in progress, from among the work site candidates identified by S12 (S13). |
