Road Groove Cutting Apparatus with Feedback Depth Control

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing methods for cutting grooves in road surfaces lack precision and consistency, as they are prone to variations due to traffic and road conditions, affecting the visibility and uniformity of road markings.

Innovation Solution

A cutting apparatus equipped with a rotatable cutting head, distance sensors, and a controller that uses feedback signals to maintain a predetermined groove depth, allowing for real-time adjustments and precise control of the groove depth relative to the road surface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If traditional line painting techniques or reflective tapes are used for road markings, then application is simple and quick, but visibility and uniformity deteriorate under traffic and environmental effects

Engineering Contradiction:
Improveapplication simplicityVSAvoidvisibility consistency
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The cutting apparatus uses a dynamic feedback control system where distance sensors continuously monitor groove depth and provide real-time feedback to the controller, which adjusts the actuator position dynamically during operation to maintain consistent groove depth despite varying road surface conditions

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system implements closed-loop feedback control by using distance sensors to measure actual groove depth, comparing it with the target depth, and automatically adjusting the cutting head position through the actuator to eliminate depth variations, ensuring uniform road markings

Inventive Principle:
Principle #23Feedback

2Illumination intensity

If groove depth is increased for better marking visibility, then visibility improves, but manufacturing precision deteriorates due to surface variations

Engineering Contradiction:
Improvemarking visibilityVSAvoidgroove depth consistency
Core Design Contradiction:
Illumination intensityVSManufacturing precision

Solution Approach 1:

Distance sensors mounted on the cutting apparatus continuously measure the depth of grooves being cut and provide real-time feedback signals to the controller, which automatically adjusts the cutting head position to maintain precise groove depth control even when cutting deeper grooves for improved visibility

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system replaces manual depth control mechanisms with an automated feedback control system using distance sensors and electronic actuators, enabling precise groove depth control that is not achievable through mechanical means alone, especially for deeper grooves

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Device complexity

If manual or fixed-depth cutting methods are used, then device complexity is low, but measurement precision and groove depth control deteriorate

Engineering Contradiction:
Improvecutting system simplicityVSAvoidgroove depth accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The cutting apparatus incorporates distance sensors that continuously measure groove depth and provide feedback to a controller, which automatically adjusts the cutting head position to maintain precise depth control, achieving high measurement precision through automated feedback rather than complex manual adjustments

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system uses self-regulating feedback control where the distance sensors and controller automatically monitor and adjust groove depth without operator intervention, maintaining precise depth control through the system's own sensing and actuation capabilities

Inventive Principle:
Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables precise and consistent groove cutting, providing improved visibility and uniformity of road markings by continuously monitoring and adjusting the groove depth, accounting for irregularities and variations in the road surface.

Implementation Method 1

at least one distance sensor disposed on the housing for sensing a depth of a groove cut by the cutting head

Methodology Applied
Scientific EffectLight reflection/Time of flight: LIDAR

Data Source

PatentUS9121148B2Method and apparatus for cutting grooves in a road surface
Publication Date: 2015.09.01 SURFACE PREPARATION TECHNOLOGIES LLC
  • US9121148B2 patent drawing
  • US9121148B2 patent drawing
  • US9121148B2 patent drawing

AI summary

A system and apparatus for cutting grooves in a surface includes a housing having a rotatable cutting head mounted therein. An actuator drives the cutting head out of and into contact with the surface. Sensors disposed on the housing sense a depth of the groove cut by the cutting head. A controller is arranged to receive a signal from the sensors and compare the depth of the groove with a predetermined reference depth. The controller sends a signal to the actuator and adjusts the position of the cutting head via the actuator to maintain the depth of the groove at about the reference depth.