Rod-Shaped Camera for Hollow Body Inner Wall Inspection
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Solution Overview
Problem
Existing examining devices for inner walls of hollow bodies require high manual effort, are time-consuming, and have a high error rate, especially when detecting small irregularities or layer thicknesses, making them unreliable for precise control measurements in production processes.
Innovation Solution
A rod-shaped camera device with illumination and diameter determination means, capable of recording panoramic images and determining surface properties, is used to examine inner walls with high precision and reliability, reducing manual intervention and increasing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual visual inspection or simple measuring elements are used, then the examining device is simple to operate, but the measurement precision and reliability are insufficient for detecting small irregularities and layer thicknesses
Solution Approach 1:
The patent combines multiple examination functions (visual inspection, diameter measurement, coating thickness measurement, roughness assessment) into a single integrated rod-shaped camera device. This merging of functions allows the device to achieve high measurement precision for small irregularities and layer thicknesses while maintaining operational simplicity through automation.
Solution Approach 2:
The rod-shaped camera device is designed as a universal examining tool that can perform multiple types of measurements (inner diameter, coating thickness, surface roughness, defect detection) on cylinder bores. This multi-functionality resolves the contradiction by providing comprehensive high-precision examination capabilities in one device rather than requiring multiple separate simple tools.
2Productivity
If conventional examining methods with manual activities are used, then the device complexity is low, but the productivity and time efficiency are reduced due to high manual effort and time resources required
Solution Approach 1:
The examining device is designed to perform examinations autonomously without requiring continuous manual intervention. The rod-shaped camera device automatically captures images, measures dimensions, evaluates surface properties, and generates examination results, enabling high productivity through self-service operation while reducing the need for complex manual procedures.
Solution Approach 2:
The patent replaces manual mechanical measurement activities with an automated optical measurement system. The rod-shaped camera device uses optical fields (light) instead of mechanical contact to measure and evaluate cylinder bore properties, significantly increasing examination speed and productivity while reducing device complexity through automation.
3Reliability
If manual examination methods are used, then the ease of operation is high, but the reliability and error rate are problematic due to high error rates in manual assessment
Solution Approach 1:
The rod-shaped camera device incorporates automated image processing and evaluation algorithms that provide objective feedback on cylinder bore conditions. The system automatically analyzes captured images to detect irregularities, measure coating thickness, and assess surface roughness, eliminating subjective human error and ensuring high reliability of control measurements while maintaining ease of operation through automated decision-making.
Solution Approach 2:
The examining device creates digital copies (images) of the cylinder bore interior for analysis. This optical copying approach replaces manual visual inspection with automated image processing, significantly improving measurement reliability by eliminating human error in assessment while keeping the operation simple through automated image evaluation.
4Measurement precision
If automated optical measurement systems are used, then the measurement precision improves, but the device complexity increases requiring sophisticated control and evaluation means
Solution Approach 1:
The patent implements a nested structure where the rod-shaped camera device contains integrated illumination means, optical measurement sensors, and image processing capabilities within a compact rod-shaped housing. This nesting of functional components achieves high measurement precision for surface properties while managing device complexity through integrated design rather than separate complex systems.
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
The solution enables rapid and accurate examination of inner walls, detecting subtle irregularities and defects, thereby improving production efficiency and reducing human error in the assessment of surface properties and coatings within tight tolerances.
Implementation Method 1
a light source for emitting a light beam onto inner walls of the cavity and also optical measuring means (sensors) to detect light coming from the inner walls of the cavity
Data Source
AI summary
An examining device for examining inner walls of a hollow body comprises: a rod-shaped camera device designed to record an image transversely with respect to its longitudinal axis; adjustment means for moving the camera device into and out of the hollow body; a grazing light illumination device for illuminating the inner walls and having emission directions that are transverse with respect to receiving directions, from which the camera device receives light from the illuminated inner walls, wherein an angle between the emission and receiving directions is between 45° and 135°; diameter determination means for determining an inner diameter of a cavity of the hollow body and comprising a light source and optical measuring means. Furthermore, a corresponding method for examining inner walls is described.