Liquid Container Inspection With Adjustable Angles for Transparent Matter
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Solution Overview
Problem
Existing inspection systems struggle to detect the external shape of transparent or semi-transparent foreign matters and elongated objects in a liquid due to inadequate illumination configurations.
Innovation Solution
The system employs a first illumination unit emitting light from one end of the container, controlled by a first illumination control unit, to adjust the incidence angle uniformly across the container, aligned with an imaging apparatus, ensuring optimal brightness for clear image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the illumination light source is disposed on the opposite side of the container from the camera, then it is possible to observe the whole aspect of non-transparent foreign matter, but it is difficult to observe the total aspect of transparent or semi-transparent foreign matter and elongated objects
Solution Approach 1:
The illumination light source is configured to rotate together with the container around the first axis, dynamically adjusting the illumination angle relative to the camera. This dynamic positioning allows the system to adapt to different foreign matter types by changing the observation geometry, enabling detection of both non-transparent and transparent/semi-transparent objects with varying degrees of success
Solution Approach 2:
The system combines multiple detection approaches by integrating the rotating illumination camera that captures images from different angles and positions. This composite observation strategy synthesizes information from multiple viewing geometries to achieve comprehensive detection of diverse foreign matter types
2Device complexity
If a single fixed illumination angle is used, then the device complexity is reduced, but the brightness uniformity in the container varies and detection precision decreases
Solution Approach 1:
The illumination light source rotates synchronously with the container, dynamically adjusting the illumination angle to maintain optimal brightness distribution throughout the liquid volume during rotation, ensuring uniform detection conditions without requiring complex additional control mechanisms
Solution Approach 2:
The rotating illumination camera serves multiple functions: it provides illumination, captures images from various angles, and adapts to different foreign matter types simultaneously, reducing the need for separate specialized components while maintaining detection precision
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 configuration allows for easy detection of the external shape of observation targets, including transparent and elongated foreign matters, by continuously controlling the illumination angle for uniform brightness.
Implementation Method 1
a first illumination unit that emits light to the liquid from one end portion side of the container in a longitudinal direction
Implementation Method 2
an imaging apparatus that acquires image data indicating a state of the liquid
Data Source
AI summary
An inspection apparatus includes a gripping device that grips a container filled with a liquid, a first illumination unit that emits light to the liquid from one end portion side of the container in a longitudinal direction, and a first illumination control unit that is allowed to control an incidence angle of the light emitted from the first illumination unit on the liquid to a freely selected angle, in which the first illumination unit and the first illumination control unit are disposed in the same direction as an imaging apparatus that acquires image data indicating a state of the liquid, as viewed from the container, and the incidence angle of the light emitted from the first illumination unit is made continuously controllable to the freely selected angle with an angle at which brightness in the container is most uniform as a reference.