System and method for controlling the operation of ground-engaging tools of an agricultural implement

Brittany Schroeder, Bunker Hill, IN (US)

USPTO: us-12622340 · published 2026-05-12 · patents · A01B 79/005· A01B 63/24

System and method for controlling the operation of ground-engaging tools of an agricultural implement

Brittany Schroeder, Bunker Hill, IN (US) This is my paper

Pith reviewed 2026-05-15 19:32 UTC · model grok-4.3

classification patents A01B 79/005A01B 63/24

keywords crop residuecellulose contentlight penetrationvision sensoractuator controlground-engaging toolagricultural implement

0 comments

The pith

Reflections of emitted light waves can be processed to determine cellulose content in crop residue and thereby control the force applied by an actuator to a ground-engaging agricultural tool.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The patent presents a method that emits light waves toward a field surface, receives the reflections, and extracts a parameter that quantifies how far the light penetrates the layer of crop residue. From this penetration parameter the system calculates the cellulose content of the residue. The computed cellulose value is then used as the direct input for controlling an actuator that applies force to the ground-engaging tool. A reader would care because residue cellulose levels change how aggressively a tool should engage the soil; an automated link between the two removes the need for constant manual adjustment.

Core claim

The method receives reflections of output light waves, derives a parameter indicative of light penetration through crop residue, determines cellulose content from that parameter, and controls actuator operation on the ground-engaging tool according to the determined cellulose content.

What carries the argument

Vision-based sensor that converts measured light-penetration depth through residue into a cellulose-content value used to command an actuator.

If this is right

Actuator force changes automatically as the implement encounters residue of differing cellulose levels.
A single pass can maintain target soil engagement without separate residue-mapping operations.
Tool settings become responsive to spatial variation in residue composition within one field.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

The same optical measurement could be extended to estimate additional residue properties such as moisture if further calibration data are collected.
Combining the sensor output with location data would allow the system to anticipate residue changes before the tool reaches them.
Calibration routines performed on known residue samples would be required before the method can be deployed across different crops or climates.

Load-bearing premise

The chosen light-penetration parameter maps reliably and uniquely to cellulose content across the range of field conditions, residue types, and moisture levels encountered in operation.

What would settle it

Laboratory assays of residue samples collected from the same locations show no consistent statistical relationship between the sensor-derived penetration parameter and measured cellulose percentages.

read the original abstract

1 . A method for controlling the operation of ground-engaging tools of an agricultural implement, the agricultural implement including a ground-engaging tool configured to be moved through the soil of a field, the agricultural implement further including an actuator configured to apply a force on the ground-engaging tool, the method comprising: receiving reflections of output light waves emitted by a vision-based sensor; determining, with a computing system, a parameter indicative of a light penetration through crop residue based on the received reflections of the output light waves; determining, with the computing system, the cellulose content of the crop residue based on the determined parameter; and controlling, with the computing system, an operation of the actuator based on the determined cellulose content.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Desk Editor's Note private letter to a colleague

This is a utility patent claiming real-time actuator control from optical cellulose estimates in residue, but it supplies no data, equations, or calibration to support the central mapping.

read the letter

The core of this patent is a straightforward control loop: a vision sensor captures reflected light from crop residue, a parameter for light penetration is computed, cellulose content is inferred from that parameter, and the result drives an actuator on a ground-engaging tool. The sequence is described clearly enough to be implemented by an equipment engineer, which is the main practical contribution. No new sensor physics or control theory appears; it is an incremental assembly of existing optical and hydraulic techniques already used in precision agriculture. The patent does not report any field data, error budgets, or validation trials, so the decisive step—turning a generic penetration parameter into a reliable cellulose value—remains untested. Variables such as moisture, residue thickness, particle size, and illumination angle are not addressed, leaving the mapping under-determined. Because the document is a patent filing rather than a research report, it contains no derivations, fitted models, or reproducibility checks. The work is therefore most useful to implement designers who need prior-art language or a starting functional specification. It offers little to researchers who require evidence that the sensing step actually works across realistic field conditions. I would not bring it to a reading group or cite it for technical results. A serious editor should desk-reject rather than send it for peer review; there is no scientific claim that needs referee scrutiny.

Referee Report

1 major / 0 minor

Summary. The patent claims a method for controlling an actuator on an agricultural implement's ground-engaging tool. The method receives reflections of output light waves from a vision-based sensor, computes a parameter indicative of light penetration through crop residue, infers the cellulose content of the residue from that parameter, and uses the inferred cellulose value to control the actuator force applied to the tool.

Significance. If the unstated mapping from light-penetration parameter to cellulose content can be shown to be robust, the approach would allow real-time, sensor-driven adjustment of tillage depth or down-force in response to residue composition, which could improve residue management and soil health outcomes in variable field conditions.

major comments (1)

Claim 1: the step 'determining... the cellulose content of the crop residue based on the determined parameter' supplies neither an explicit functional relationship nor any calibration data or validation set. Because reflectance is also affected by moisture, thickness, particle size, and illumination angle, the mapping is under-determined; this directly undermines the downstream actuator command that is asserted to depend on cellulose content.

Simulated Author's Rebuttal

1 responses · 0 unresolved

We thank the referee for the detailed review and address the single major comment below. The response clarifies the scope of the method claim without altering its breadth.

read point-by-point responses

Referee: Claim 1: the step 'determining... the cellulose content of the crop residue based on the determined parameter' supplies neither an explicit functional relationship nor any calibration data or validation set. Because reflectance is also affected by moisture, thickness, particle size, and illumination angle, the mapping is under-determined; this directly undermines the downstream actuator command that is asserted to depend on cellulose content.

Authors: The claim recites a functional method in which the computing system performs the determination step; the specific mapping (whether a calibrated lookup table, regression model, or sensor-specific function) is an implementation detail left open so that the claim covers any suitable relationship between the measured light-penetration parameter and cellulose content. In practice the mapping would be obtained by site- or crop-specific calibration that accounts for the listed confounding factors, exactly as is routine for other optical residue sensors already used in agriculture. Because the patent is directed to the overall control architecture rather than to a particular equation, neither an explicit formula nor validation data appear in the specification. revision: no

Circularity Check

0 steps flagged

No derivation chain; purely procedural definition with no equations or fitted mappings.

full rationale

The patent states a sequence of operations (receive reflections, compute a light-penetration parameter, assert cellulose content from that parameter, command an actuator) without any equations, functional forms, calibration steps, or citations. Because no derivation or model is supplied, none of the enumerated circularity patterns can occur. The mapping from parameter to cellulose is simply declared, not derived from prior inputs or self-referential fits.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

The method presupposes that optical reflectance can be converted to cellulose content and that this value is a useful control variable; no free parameters, axioms, or invented entities are explicitly introduced in the abstract.

pith-pipeline@v0.9.0 · 5433 in / 989 out tokens · 52005 ms · 2026-05-15T19:32:36.184582+00:00 · methodology

System and method for controlling the operation of ground-engaging tools of an agricultural implement

Core claim

What carries the argument

If this is right

Where Pith is reading between the lines

Load-bearing premise

What would settle it

discussion (0)