Coordinate Measuring Device Distance Range Determination
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Solution Overview
Problem
Existing coordinate measuring devices with non-contact-type measurement probes face challenges in determining whether the distance from the probe to the work piece is within the imageable range, leading to potential damage and reduced accuracy, as they cannot distinguish between distances beyond or closer than the imageable range.
Innovation Solution
A coordinate measuring device equipped with a determination device that assesses the distance range by referencing image capture results and stored data, using a notification system to alert operators of the distance, and incorporating a contact-type measurement probe for additional safety during measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the measurement probe approaches the work piece closely to improve measurement precision, then the measurement accuracy is improved, but the risk of contact between the probe and work piece increases causing damage and reduced reliability
Solution Approach 1:
The determination device performs preliminary assessment of the distance range before actual measurement begins. By evaluating whether the probe is within the imageable range using stored reference data and current image capture results, the system prevents contact damage before it can occur, allowing the operator to safely approach the work piece for high-precision measurement
Solution Approach 2:
The notification device provides continuous feedback to the operator about the distance range status. By comparing current image capture results with stored determination results, the system real-time monitors probe proximity and alerts the operator when approaching dangerous zones, enabling maintained measurement precision while preventing contact damage
2Measurement precision
If the operator watches both the display screen and the work piece to verify distance, then the distance verification is improved, but the operability decreases
Solution Approach 1:
The determination device automatically performs distance range verification by itself, eliminating the need for operator intervention. The system autonomously compares current image capture results with stored reference data, determines the distance range, and provides notification, freeing the operator from the tedious task of monitoring both screen and work piece while maintaining accurate distance verification
3Reliability
If the system determines distance range to prevent contact, then the probe protection is improved, but the device complexity increases
Solution Approach 1:
The determination device leverages the existing image capture apparatus and memory device to perform multiple functions. The same image capture apparatus used for measurement also serves as the basis for distance range determination, and the memory device stores both measurement data and reference determination results, eliminating the need for separate dedicated components and reducing overall system complexity while maintaining probe protection
Solution Approach 2:
The system uses stored determination results from previous measurements as reference data for current distance range assessment. By copying and comparing historical determination results with current image capture outcomes, the system achieves reliable probe protection without requiring complex real-time calculation algorithms, simplifying the control system
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 determination of the distance range, preventing probe-work piece contact and maintaining measurement accuracy by continuously monitoring and updating distance information, and allowing for both non-contact and contact-type measurements.
Implementation Method 1
an illumination apparatus that emits light at a work piece along a plane, and an image capture apparatus that captures, from a position other than the above-noted plane, an image of the emitted light produced by a surface of the work piece
Data Source
AI summary
A coordinate measuring device includes a non-contact-type measurement probe having a light emitter that emits light at a work piece along a plane, and an image capturer that captures an image of the emitted light produced by a surface of the work piece; a determiner that determines whether a distance from the measurement probe to the work piece is in an imageable range where the image of the emitted light can be captured, in a far range that is more distant than the imageable range, or in a proximal range that is closer than the imageable range; a notification device issuing a notification of results of a determination made by the determiner; and a memory storing the determination results.