Calibrating Medical Detection Working Plane Using Laser Reference
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Solution Overview
Problem
Calibrating the working plane of medical detection apparatuses, such as CT imaging machines, is inefficient due to reliance on visual observation of bubble levels, leading to low accuracy and long calibration times.
Innovation Solution
A method involving the use of an angle measuring tool to determine inclination angles and compute vertical adjustments for foot height adjustments, ensuring points on the working plane align with a reference plane, thereby improving calibration accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual observation of bubble level is used for calibration, then the calibration process is simple to operate, but the calibration accuracy is low and calibration time is long
Solution Approach 1:
The patent replaces the mechanical bubble level system with an optical measurement system. Specifically, it uses a laser projector to project a reference line and a detector to measure the actual position, substituting the mechanical observation method with an optical-electronic measurement system that provides higher precision and automation.
Solution Approach 2:
The patent introduces a laser projector as an intermediary tool between the working plane and the measurement system. The projector casts a reference line onto the working plane, serving as a visual mediator that enables precise measurement without direct contact with the plane being calibrated, thus improving both accuracy and efficiency.
2Productivity
If repeated visual observation and manual adjustment are performed, then the calibration can be completed, but the working efficiency is low
Solution Approach 1:
The patent implements a feedback mechanism where the detector continuously measures the position of the working plane relative to the projected reference line, and the system automatically adjusts the height of the supporting feet based on the measurement data. This closed-loop feedback system eliminates the need for repeated manual observation and adjustment, significantly improving working efficiency while maintaining high calibration accuracy.
Solution Approach 2:
The calibration system performs self-adjustment through automated control. The detector measures the deviation, the control system calculates the required adjustment, and the driving mechanism automatically adjusts the foot height without human intervention, making the system serve itself and eliminating manual repetitive operations.
Data Source
AI summary
A method for calibrating a working plane of a medical detection apparatus in parallel with a first reference plane is provided. The working plane has first and second points to be calibrated thereon. The first and second points are supporting points of first and second foots of the working plane respectively. The method includes receiving a first inclination angle value which is an angle between a line connecting the first and second points and the first reference plane; computing a vertical distance between the second point to be calibrated and the first reference plane as a first magnitude of adjustment according to a pre-stored distance between the first and second points and the first inclination angle value; and adjusting a height of the second foot according to the first magnitude of adjustment to allow the second point to be located on the first reference plane.