IGD Coordinate System Synchronization with 3D Measurement Device

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Solution Overview

Problem

3D measurement devices are not easily compatible with other technologies due to their unique coordinate systems, making it difficult to transfer measurements without losing information, which hinders their integration with Intelligent Guidance Devices (IGD) for guided measurement processes.

Innovation Solution

The method synchronizes the position and orientation of an IGD's 3D coordinate system with a 3D measurement device's (3DM) system using gravity direction measurements, electronic compasses, and three-axis accelerometers to maintain alignment during movement, enabling the IGD to display 3D graphics for guiding measurements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If 3D measurement devices use their own unique coordinate system, then measurement accuracy is maintained, but compatibility with other technologies deteriorates

Engineering Contradiction:

Improvemeasurement accuracyVSAvoidcompatibility

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The patent introduces a portable device as an intermediary that receives measurements from the 3D measurement device and performs coordinate system transformations. This mediator converts measurements between the measurement device's coordinate system and other coordinate systems (such as CAD or manufacturing systems), enabling compatibility without compromising the original measurement accuracy.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If 3D measurement devices are made portable, then ease of operation is improved, but coordinate system synchronization with other devices deteriorates

Engineering Contradiction:

ImproveportabilityVSAvoidcoordinate system synchronization

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces complex mechanical coordinate alignment systems with electronic sensors (accelerometers, gyroscopes, magnetometers) that automatically detect the device's orientation and position in 3D space. These sensors provide real-time data that enables automatic coordinate system transformation, maintaining synchronization reliability while preserving portability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The portable device creates a virtual copy of the measurement coordinate system by using sensors to replicate the spatial relationships and transformations. This virtual coordinate system can be easily transferred and synchronized with other systems through digital data exchange, maintaining reliability without the complexity of physical alignment mechanisms.

Inventive Principle:

Principle #26Copying

3Adaptability or versatility

If coordinate systems are transformed between devices, then adaptability is improved, but information loss deteriorates

Engineering Contradiction:

Improvecoordinate system compatibilityVSAvoidmeasurement information

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent implements feedback mechanisms where the transformation process continuously monitors and adjusts for potential information loss. The system uses sensor data to verify that coordinate transformations preserve all measurement information, and automatically compensates for any deviations, ensuring complete information retention across different coordinate systems.

Inventive Principle:

Principle #23Feedback

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

This synchronization allows seamless integration and effective guidance of measurement processes by ensuring that the IGD's coordinate system remains aligned with the 3DM's, facilitating the transfer of data and maintaining accuracy during movement and orientation changes.

Implementation Method 1

defining a coordinate system OEarth, XIGD-Earth, YIGD-Earth, ZIGD-Earth using a direction opposite to gravity as ZIGD-Earth

Methodology Applied

Scientific EffectGravity: Gravitation

Implementation Method 2

defining a coordinate system OEarth, XIGD-Earth, YIGD-Earth, ZIGD-Earth using a direction corresponding to a magnetic north pole as YIGD-Earth

Methodology Applied

Scientific EffectMagnetic field: Magnetic Field

Implementation Method 3

There is also described a method for maintaining the synchronization while the IGD is moving, in which the IGD's three-axis accelerometer is used explicitly.

Methodology Applied

Scientific EffectAcceleration: Accelerometer

Data Source

PatentUS8903656B2Synchronization of the position and orientation of a 3D measurement device and the position and orientation of an intelligent guidance device

Publication Date: 2014.12.02 INNOVMETRIC LOGICIELS

AI summary

There is described herein a method to synchronize the position and orientation of an IGD 3D Coordinate System with the position and orientation of a 3DM 3D Coordinate System, in which the IGD's gravity direction measurement device and electronic compass are used explicitly. There is also described a method for maintaining the synchronization while the IGD is moving, in which the IGD's three-axis accelerometer is used explicitly. There is further described how an IGD, once its position and orientation have been synchronized to the position and orientation of a 3DM, can be used to display 3D graphics that guide the measurement process.