Line Camera Optical Axis Alignment and Trigger Control
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Solution Overview
Problem
Existing image inspection systems face challenges in easily setting and maintaining the optimal positioning and alignment of cameras and illuminating sections, leading to potential inspection failures due to factors like aged deterioration or unintended contact, which are not effectively addressed by current methods.
Innovation Solution
An image inspection apparatus and method that includes a line camera, display section, optical axis adjusting section, trigger setting section, and aspect ratio adjusting section, allowing for easy setup and adjustment of imaging conditions such as optical axis, pixel resolution, and imaging interval, with optional features like automatic calculation of imaging intervals and inclinations sensing, to ensure accurate and stable imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the positions and angles of the illuminating section and imaging section are manually adjusted during setting, then the initial alignment can be achieved, but periodic confirmation and adjustment are required due to deviation from aged deterioration or unintended contact
Solution Approach 1:
The system automatically detects deviation of the imaging section using an inclination sensor and calculates correction amounts without manual intervention. The control section automatically adjusts the imaging section's position and angle based on detected deviation, enabling the system to self-correct alignment issues caused by aged deterioration or unintended contact, eliminating the need for periodic manual confirmation and adjustment
Solution Approach 2:
The system continuously monitors the imaging section's inclination using an inclination sensor and feeds this information back to the control section. The control section processes this feedback by calculating deviation from the optimal position and angle, then automatically adjusts the imaging section to maintain precise alignment, creating a closed-loop control system that maintains measurement precision over time
2Measurement precision
If the camera angle is finely adjusted using image capture methods, then setting precision can be achieved, but measures against occurrence of inclination due to aged deterioration are not taken
Solution Approach 1:
The inclination sensor continuously monitors the imaging section's angle and the control section automatically corrects any deviation from the optimal camera angle. This self-service mechanism ensures that measures against inclination from aged deterioration are continuously applied, maintaining both setting precision and long-term reliability without manual intervention
Solution Approach 2:
The system establishes a feedback loop where the inclination sensor continuously provides angle information to the control section, which then automatically adjusts the imaging section to maintain the optimal camera angle. This continuous feedback mechanism ensures both precise initial setting and ongoing protection against inclination due to aged deterioration
3Measurement precision
If multiple setting parameters (optical axis, trigger timing, aspect ratio) are adjusted manually, then imaging conditions can be optimized, but the setting work becomes troublesome and time-consuming
Solution Approach 1:
The system automatically optimizes multiple imaging conditions including optical axis alignment, trigger timing, and aspect ratio without requiring manual adjustment of each parameter. The control section processes inclination sensor data and automatically calculates and applies corrections to all setting parameters, enabling optimized imaging conditions while eliminating troublesome manual setting work
Solution Approach 2:
The system combines multiple setting adjustments (optical axis, trigger timing, aspect ratio) into a single automated process. Instead of requiring separate manual adjustments for each parameter, the control section integrates all these settings and automatically optimizes them together based on inclination detection, significantly improving ease of operation while maintaining imaging condition optimization
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
Facilitates straightforward and accurate setup of imaging conditions, reducing the risk of inspection failures by enabling users to easily adjust and maintain optimal camera and illuminating section alignment, thereby ensuring reliable visual inspections.
Implementation Method 1
a line camera in which a plurality of imaging elements are arrayed to be linearly arranged, the line camera receiving the light irradiated from the illuminating section and reflected on the inspection target object
Data Source
AI summary
An image inspection apparatus includes an illuminating section for irradiating illumination light, a line camera in which a plurality of imaging elements are arrayed to be linearly arranged, the line camera receiving the light irradiated from the illuminating section and reflected on the inspection target object, a display section for displaying an image captured by the line camera, an optical axis adjusting section for adjusting an optical axis of the line camera, a trigger setting section for specifying a trigger that specifies timing when the inspection target object is imaged by the line camera, an aspect ratio adjusting section for adjusting longitudinal and lateral pixel resolutions of the image captured by the line camera, and a display control section for displaying the optical axis adjusting section, the trigger setting section, and the aspect ratio adjusting section on the display section in order.