Can stockpile measurement be flown?
Walking piles with a wheel and guessing tonnage is how inventory writedowns are born. A twenty-minute flight turns the yard into a measured surface with volumes you can book.
Free, about two minutes, no phone number. You get an honest no when a robot is the wrong answer.
What the job actually is
Aggregate, coal, chips and scrap get measured by pacing, truck counts and estimation. Month-end inventory carries error nobody can quantify, and disputes with suppliers or auditors get settled by whoever argues best.
Signs it is worth automating
- Inventory value in piles is material to your books.
- Month-end measurement is currently pacing and folklore.
- Supplier or customer disputes hinge on delivered volume.
- The yard is active enough that piles change weekly.
- Auditors have already raised measurement methodology.
What the cell looks like
A mapping drone flying a programmed grid over the yard, photogrammetry turning overlapping images into a surface model, and volumes computed against base surfaces per pile. Accuracy that satisfies auditors comes from ground control or RTK positioning, flown the same way every time. Many sites hire this monthly; high-frequency yards bring it in-house.
When the answer is no
Read this part first
We would rather talk you out of a bad purchase than into one. If any of these describe your version of this job, the honest answer is probably not yet.
- A handful of small piles: a rover-and-pole survey is cheaper and fine.
- Material under roof or in bins: photogrammetry needs sky.
- You need real-time numbers daily; consider fixed sensors instead.
- Airspace over the yard cannot be routinely flown; check first.
What an engineer has to verify
- Stated accuracy with method: ground control points or RTK, and against what check surface.
- Whether your auditor accepts photogrammetric volumes; most now do, in writing is better.
- Per-flight or monthly service pricing against your inventory error cost.
- Density assumptions: the flight measures volume; tonnage is your density number.
Safety is not on that list because it is not ours to determine. Cell design, guarding and the risk assessment belong to an independent certified integrator, every time.
What the research says
Peer reviewed work from our research library on this application. These are studies of other plants and other settings, not a prediction about yours, and the excerpts are the authors' own words. Every title links to the source so you can check us.
- State‐of‐the‐art technologies for UAV inspections
From the abstract: “Visual condition inspections serve as the basis for determining the need and schedule for service tasks such as maintenance and remediation projects to preserve the proper functioning of power facilities and infrastructure.”
- VOLUME COMPUTATION OF A STOCKPILE - A STUDY CASE COMPARING GPS AND UAV MEASUREMENTS IN AN OPEN PIT QUARRY
From the abstract: “Abstract. The following paper aims to test and evaluate the accuracy of UAV data for volumetric measurements to the conventional GNSS techniques.”
- Estimating the impact of drone-based inspection on the Levelised Cost of electricity for offshore wind farms
From the abstract: “Using drones for infrastructure inspection is becoming routine, driven by the benefit of reducing risk and costs.”
- COMPARISON BETWEEN MULTICOPTER UAV AND TOTAL STATION FOR ESTIMATING STOCKPILE VOLUMES
From the abstract: “Abstract. Currently the UAV (Unmanned Aerial Vehicle) have become an alternative for different engineering applications, especially in surveying, one of these applications is the calculation of volumes of stockpiled material, but there are questions about its...”
- Unmanned aerial vehicles (UAV) as a tool for visual inspection of building facades in AEC+FM industry
From the abstract: “Purpose The purpose of this paper is to report on the results of an exploratory study on the use of unmanned aerial vehicles (UAV) as a visual data collection tool in the architecture, engineering, construction and facility management industry for the...”
The full drone inspection of structures shelf has 14 works.
See it run
Two clips of this job actually running, from two different manufacturers. Both are the makers' own marketing footage, showing a cell under good conditions with a part it was set up for, so watch them for what the motion looks like rather than as evidence of what your rate would be.
Two robots move valve bodies between inspection stations that check dimensions and surface, then separate good parts from bad.
A cobot moves its onboard camera over parts and flags the defective ones on screen as they come through.
Is your version of this job automatable?
Tell Amelia what you are running: a candid preliminary read, including when the answer is no.
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