Integrated Latch Control for 3D Measuring Machine Accuracy

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Solution Overview

Problem

Conventional measurement devices experience time lags and reduced measurement accuracy due to separate latch control mechanisms for scale and touch counters, leading to longer processing times and unreliable coordinate readings.

Innovation Solution

Integration of touch and scale counters within a single integrated circuit on the control circuit board allows simultaneous latch control, eliminating the need for separate register readings and enabling faster, more accurate measurement processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate latch control mechanisms are used for scale and touch counters, then each counter can be controlled independently, but time lags occur between latch timing and measurement accuracy declines

Engineering Contradiction:
Improvereliability of read coordinate valueVSAvoidprocessing time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent merges the previously separate latch control mechanisms for the scale counter and touch counter into a single integrated latch control unit. This integration ensures that both counters are latched simultaneously at the same timing moment, eliminating the time lag that occurred when separate software-based latch controls operated independently. The unified latch control reads both counter values in one operation, improving both reliability and reducing processing time.

Inventive Principle:
Principle #5Merging (Combining)

2Productivity

If separate latch control mechanisms are used for scale and touch counters, then individual control is possible, but measurement processing time increases

Engineering Contradiction:
Improvemeasurement processing speedVSAvoidcomplexity of latch control
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent combines multiple latch control functions into a single integrated latch control unit that simultaneously manages both the scale counter and touch counter. This merging reduces the overall complexity by eliminating redundant separate control mechanisms while improving productivity through simultaneous latching operations that reduce measurement processing time.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated latch control unit performs multiple functions: it latches both the scale counter and touch counter values simultaneously, manages coordinate detection signals, and handles touch detection signals within a single control mechanism. This multi-functionality reduces device complexity while maintaining or improving measurement processing speed.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If separate circuit bodies are used for probe circuit and scale circuit, then interchangeability of probes is enabled, but latch timing synchronization becomes difficult

Engineering Contradiction:
Improveinterchangeability of probesVSAvoidaccuracy of coordinate reading
Core Design Contradiction:
Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent integrates the latch control functionality into a unified control circuit board that receives signals from both the interchangeable probe circuit and the scale circuit. This merging ensures that even though the probe circuit and scale circuit remain separate to maintain interchangeability, their latch timing is synchronized through the integrated control mechanism, preserving measurement precision.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS8516712B2Measurement device
Publication Date: 2013.08.27 MITUTOYO CORP
  • US8516712B2 patent drawing
  • US8516712B2 patent drawing
  • US8516712B2 patent drawing

AI summary

A three-dimensional measuring machine (measurement device) which supplies a probe having a measurement head able to make contact with a measured object and a contact detection sensor which detects the contact of a measurement head with a measured object and outputs a touch signal; a displacement structure which displaces a probe along three axial directions orthogonal to one another; scale sensors which detect the position coordinates of a probe and output a coordinate detection signal; a control circuit board having an integrated circuit on which are installed a touch counter which counts touch signals and a scale counter which counts coordinate detection signals; and a latch controller which latches a touch counter value and a scale counter value at the same time.