Road Surface Profiler Performance Measuring Instrument

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Solution Overview

Problem

Current road surface profilers lack accuracy in profiling the cross-sectional shape of road surfaces and do not have performance measuring instruments to objectively assess their performance, leading to potential errors in road maintenance decisions.

Innovation Solution

A road surface profiler performance measuring instrument with a distance measurement unit, flatness measurement unit, travelling unit, height adjustment unit, and control unit that simulates road conditions to assess the profiler's performance by generating and comparing moving distance and height information, using a circular wheel and angle measurement sensor to calculate height differences and simulate road surface profiles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If road surface profilers are used to measure flatness, then road surface profiling capability is provided, but measurement accuracy is insufficient

Engineering Contradiction:

Improveflatness measurement accuracyVSAvoidprofiler performance reliability

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent creates a virtual road surface model that copies the essential characteristics of actual road surfaces. This virtual model serves as a standardized reference for evaluating profiler performance, allowing accurate measurement of flatness without relying on variable real-world road conditions. The virtual model includes precise geometric parameters that can be controlled and replicated.

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent changes the parameters of the road surface representation from physical measurements to virtual geometric parameters. By defining road surfaces through controlled mathematical parameters in a virtual environment, the system achieves higher measurement precision and reliability. The virtual model allows parameter optimization independent of physical constraints.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If multiple types of road surface profilers are used, then measurement coverage is increased, but performance evaluation capability is lacking

Engineering Contradiction:

Improveprofiler type varietyVSAvoidperformance measurement accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent creates a universal evaluation system that can assess multiple types of road surface profilers using the same virtual road surface model. This multi-functional approach allows different profiler designs to be evaluated on a common standardized basis, enabling objective performance comparison across diverse equipment types while maintaining measurement precision.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If actual road surfaces are used for testing, then real-world conditions are represented, but measurement consistency is reduced

Engineering Contradiction:

Improveroad condition representationVSAvoidmeasurement consistency

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

Instead of using variable actual road surfaces, the patent copies essential road surface characteristics into a controlled virtual model. This virtual copy maintains the representativeness of real road conditions while eliminating the variability and inconsistency inherent in physical road surfaces, thereby achieving both adaptability and measurement consistency.

Inventive Principle:

Principle #26Copying

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 accurate profiling of road surfaces and objective measurement of road surface profiler performance, improving the reliability of road maintenance decisions by providing precise flatness measurements and performance evaluation.

Implementation Method 1

The distance measurement unit may be a circular wheel (11)

Methodology Applied

Scientific EffectWheel rotation: Wheel

Implementation Method 2

the flatness measurement unit (20) may include an angle measurement sensor (21). The angle measurement sensor (21) may measure an inclined angle (c) formed by the front wheel (11) and the rear wheel (12)

Methodology Applied

Scientific EffectAngle measurement:

Implementation Method 3

The travelling unit (100) may include: a conveyor belt (110) on which the circular wheel is mounted; and a rotary drum (120) configured to move the conveyor belt (110)

Methodology Applied

Scientific EffectConveyor belt transport:

Implementation Method 4

The height adjustment unit (200) may include a rotating unit (210) configured to change an angle formed by the conveyor belt (110)

Methodology Applied

Scientific EffectAngle adjustment:

Data Source

PatentUS11306450B2Road surface profiler, road surface profiler performance measuring instrument, and method for assessing performance of same road surface profiler by using same measuring instrument

Publication Date: 2022.04.19 KOREA EXPRESSWAY CORPORATION

AI summary

Provided according to the present invention is a road surface profiler performance measuring instrument, which implements a virtual road surface state in order to assess the performance of a road surface profiler (A) including a distance measurement unit (10) and a flatness measurement unit (20), the measuring instrument comprising: a travel operation unit (100) for augmenting movement distance information (a) generated by the distance measurement unit (10); and a height adjustment unit (200) for changing height information (b) generated by the flatness measurement unit (20).