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 Technology&more

projects and utility provider projects. Project safety is a 
prime concern for these clients. By applying Trimble 
VISION and scanning to survey projects on roadways, 
intersections, and transportation corridors, Psomas can 
reduce the time needed for the survey and often reduce 
or eliminate the need for lane closures. In the office, 
technicians can use photos to develop missing or addi-
tional information without the need to return to the site. 

Using Video in the Field
At the Rocglen coal mine in New South Wales, Australia, 
Wes Maybury collects field data using a Trimble S6 total 
station equipped with Trimble VISION. Maybury's data is 
used to maintain the mine’s digital model and document 
geological features for the mine’s engineers and geolo-
gists. Working as a one-person crew and blending work 
with his total station and Trimble GNSS, Maybury uses 
Trimble VISION for resection and data collection. 

In a recent project, Maybury needed to measure the 
amount of rock displaced by blasting in the mine. He 
had only a 30-minute window before bulldozers began 
moving the newly loosened rock, and needed to set 
up the Trimble S6 close to the edge of the drop-off 
overlooking the work area. “There was not enough 
room for me to safely stand next to the instrument in 
that location,” Maybury said. “I performed the survey 
from about 10 meters (33 feet) away using Trimble 
VISION as my eyes for the survey.” Maybury used the 
real-time video display on his Trimble TSC3® controller 
to identify and measure breaklines at the top and toe of 
the slope created by the movement of the blasted rock. 

He completed the survey using the scanning function 
in Trimble Access software to capture a grid of points.

Maybury routinely uses integrated surveying and resection 
to orient the total station into the mine coordinate system. 
He has a 360-degree prism and Trimble R6 GNSS receiver 
mounted on a roof rack on his vehicle. “Once I have set up 
the instrument, I jump in my vehicle to perform the resec-
tion,” Maybury says. “In order to get the required accuracy, 
I need to drive quite a distance away, and the instrument 
may lose lock. But I just use Trimble VISION to find myself 
on the screen and the instrument can regain lock. It’s like 
having a second person working with me.”

The Value of Vision
Maybury is a strong proponent of combining multiple 
measurement technologies. “If I was not able to scan 
the area, I would have still measured as many points as I 
could have individually,” he says. “But I estimate it would 
have taken me about twice as long to perform, and only 
would have recorded half the amount of data. Because 
of the Trimble VISION and scanning features, I can record 
redundant data in most cases. And that is much better 
than finding out that I did not gather enough information.”

Logal agrees. “With the ability to blend RTK, the total 
station and the vision technology you can do multiple 
survey functions in the same place and space. Particu-
larly on our design surveys, we can double the amount 
of data that we collect.” 

See feature in POB's September issue: www.pobonline.com