PLC Shape Data Compression via 1D Extraction

Solution Overview

Problem

Existing control systems that measure object shapes using line sensors generate large amounts of data, leading to increased memory usage and computational load, particularly when measurement resolution is high.

Innovation Solution

A control system that obtains one-dimensional information about an object and uses a drive to change the measurement device's position, generating two-dimensional or three-dimensional shape data as one-dimensional arrangement information based on combined measurement data and positional information, reducing data volume.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If measurement resolution is increased to obtain more detailed shape information, then measurement precision is improved, but the volume of shape data increases leading to larger memory usage and higher computational load

Engineering Contradiction:

Improvemeasurement resolutionVSAvoidvolume of shape data

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent extracts only the essential one-dimensional measurement information from the measurement device and combines it with positional information from the drive. By taking out only the necessary data elements (one-dimensional measurement values and positions) and reconstructing the shape data in a compressed one-dimensional arrangement format, the system achieves high measurement precision while minimizing the volume of stored shape data.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the parameter representation of shape data from traditional two-dimensional or three-dimensional arrays to a compressed one-dimensional arrangement format. This parameter transformation maintains the essential shape information needed for measurement precision while significantly reducing the data volume by eliminating redundant spatial indexing information.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If measurement resolution is increased to obtain more detailed shape information, then measurement precision is improved, but the computational load in processing and comparing shape data increases

Engineering Contradiction:

Improvemeasurement resolutionVSAvoidcomputational load

Core Design Contradiction:

Measurement precisionVSPower

Solution Approach 1:

The patent extracts only the essential one-dimensional measurement information from the measurement device and combines it with positional information from the drive. By taking out only the necessary data elements (one-dimensional measurement values and positions) and reconstructing the shape data in a compressed one-dimensional arrangement format, the system achieves high measurement precision while minimizing the volume of stored shape data.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the parameter representation of shape data from traditional two-dimensional or three-dimensional arrays to a compressed one-dimensional arrangement format. This parameter transformation maintains the essential shape information needed for measurement precision while significantly reducing the data volume by eliminating redundant spatial indexing information.

Inventive Principle:

Principle #35Parameter changes

3Loss of information

If traditional two-dimensional or three-dimensional shape data is generated from line sensor measurements, then complete shape information is obtained, but the data uses large memory space and increases processing complexity

Engineering Contradiction:

Improveshape information completenessVSAvoiddata processing complexity

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The patent extracts only the essential one-dimensional measurement information from the measurement device and combines it with positional information from the drive. By taking out only the necessary data elements (one-dimensional measurement values and positions) and reconstructing the shape data in a compressed one-dimensional arrangement format, the system achieves high measurement precision while minimizing the volume of stored shape data.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the parameter representation of shape data from traditional two-dimensional or three-dimensional arrays to a compressed one-dimensional arrangement format. This parameter transformation maintains the essential shape information needed for measurement precision while significantly reducing the data volume by eliminating redundant spatial indexing information.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10480933B2Control system, and control method and program for control system

Publication Date: 2019.11.19 OMRON CORP

AI summary

A PLC system includes a displacement sensor, drives, and a PLC. The PLC system obtains line measurement data including a plurality of pieces of measurement information or 1D information from the displacement sensor and a plurality of pieces of positional information from the drives that are read in accordance with measurement intervals, generates 2D shape data, and generates 2D shape data as 1D arrangement information for every measurement interval from combination line measurement data combining the 1D information and the positional information.