Radiography Detector Alignment with String and Camera Inclination Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radiography systems fail to detect and correct the inclination of the radiographic image detector about a first axis, leading to potential failures in radiography, especially in uneven environments such as accident or disaster sites.
Innovation Solution
A radiography system with a portable retainer that includes an inclination change mechanism and a detection mechanism to detect and correct the inclination of the radiographic image detector about a first axis, using a string and camera to image the retainer, and processors to display and calculate necessary adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the radiographic image detector is installed on an uneven surface in a special environment, then the installation flexibility is improved, but the inclination of the detector about the first axis increases causing radiography failure
Solution Approach 1:
The system performs preliminary detection of the detector's inclination about the first axis using the string and camera mechanism before radiography is executed. The processor calculates the required adjustment amount and displays it to the operator, allowing the inclination to be corrected in advance, thereby preventing radiography failure while maintaining installation flexibility on uneven surfaces.
2Device complexity
If the radiographic image detector is inclined about the first axis, then the device complexity is reduced by not detecting this inclination, but the measurement precision of detector orientation is insufficient
Solution Approach 1:
A simple string is introduced as an intermediary element to detect the detector's inclination about the first axis. The string hangs vertically under gravity and its position relative to the detector is captured by a camera. This intermediary approach enables inclination detection without requiring complex sensors, thereby maintaining low device complexity while achieving sufficient measurement precision.
3Reliability
If a detection mechanism and inclination change mechanism are added to detect and correct detector inclination, then the reliability of radiography is improved, but the device complexity increases
Solution Approach 1:
The system replaces complex mechanical inclination sensors with a simple optical detection mechanism using a string and camera. The string's vertical orientation under gravity provides a reference, and the camera captures its position relative to the detector to calculate inclination. This substitution significantly reduces device complexity while maintaining high reliability for detecting and correcting detector inclination.
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 system effectively reduces the risk of radiography failure by accurately aligning the radiographic image detector, ensuring proper imaging even in uneven environments.
Implementation Method 1
a string that hangs down in a direction parallel to the vertical axis
Implementation Method 2
a first camera that images the string, and the first processor analyzes an image including the string captured by the first camera to detect the inclination
Data Source
AI summary
A radiography system includes a radiation source that emits radiation, an electronic cassette that receives the radiation and detects a radiographic image, a portable first retainer that holds the electronic cassette, a string that is attached to the first retainer, and a camera that images the string. The first retainer includes a lock portion and a movable portion as an inclination change mechanism that can change an inclination of the electronic cassette with respect to the radiation source. The string and the camera constitute a first detection mechanism that detects an inclination of the electronic cassette about an X-axis which intersects a Z-axis and is directed toward the radiation source in a case in which a radiation detection surface of the electronic cassette and the radiation source are disposed to face each other.