Gantry Arm Synchronization via Laser Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In existing gantry combined mobile radiation inspection systems, the lack of automatic synchronization between the moving speeds of the arm frames leads to deformation, affecting the accuracy of radiation detection and imaging quality, as manual deviation correction is inadequate due to mechanical errors and motor speed discrepancies.
Innovation Solution
A gantry configuration with a laser pointer and position-sensitive device on one arm frame and a controller on the other, which calculates and adjusts the rotation speed of an electric motor using a PID algorithm to maintain synchronization, ensuring the position error between the arm frames is zero, thereby preventing deformation and ensuring accurate radiation detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual deviation correction is used, then the system structure remains simple, but the position accuracy between arm frames deteriorates due to mechanical errors and motor speed discrepancies
Solution Approach 1:
The patent implements an automatic deviation correction system that uses sensors to detect the actual position of arm frames during movement and provides real-time feedback to a controller. The controller compares the detected position with the target position and automatically adjusts motor speeds to eliminate position errors, thereby resolving the contradiction between simple structure and high position accuracy.
Solution Approach 2:
The patent replaces manual mechanical deviation correction with an automated control system that uses electronic sensors and controllers to monitor and adjust arm frame positions. This substitution of mechanical manual adjustment with electronic automation achieves higher precision while maintaining relatively simple system structure.
2Measurement precision
If automatic deviation correction system is implemented, then the position accuracy between arm frames is improved, but the device complexity increases
Solution Approach 1:
The automatic deviation correction system employs sensors to continuously monitor arm frame positions and feeds this information back to a controller that automatically adjusts motor speeds. This feedback mechanism achieves high position accuracy while keeping the added complexity minimal by using straightforward sensor-controller-actuator loops.
Solution Approach 2:
The system implements self-correction capabilities where the control system automatically detects and corrects position deviations without external intervention. The controller monitors position errors and autonomously adjusts motor speeds to maintain synchronization, reducing the need for complex external correction mechanisms.
3Ease of operation
If the moving speeds of both side arm frames are different, then the operation flexibility is improved, but the gantry arm frame deformation increases affecting imaging quality
Solution Approach 1:
The patent uses position sensors to continuously monitor the relative positions of both arm frames during operation and provides feedback to the control system. When position deviations are detected that would cause deformation, the controller automatically adjusts motor speeds to maintain synchronization, thereby preventing deformation while allowing flexible operation.
Solution Approach 2:
The control system dynamically adjusts motor speeds in real-time based on detected position deviations. By continuously adapting the operating parameters (motor speeds) to maintain arm frame synchronization, the system prevents deformation during flexible operations while preserving operational versatility.
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 automatic deviation correction system effectively synchronizes the arm frames, preventing deformation and ensuring the radiation detector receives a full ray, thereby enhancing the imaging quality and accuracy of the radiation inspection.
Implementation Method 1
a laser pointer and a position sensitive device are respectively arranged on the first arm frame and the second arm frame
Implementation Method 2
the position sensitive device is configured to detect an actual position of a laser beam, which is emitted from the laser pointer, illuminated on the position sensitive device
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present invention discloses a gantry configuration for a combined mobile radiation inspection system comprising a first arm frame, a second arm frame and a third arm frame. The first, second and third arm frames define a scanning channel to allow an inspected object to pass therethrough. The gantry configuration for the combined mobile radiation inspection system further comprises a position sensing device configured to detect a position error between the first arm frame and the second arm frame; and a controller configured to control a moving speed of at least one of the first arm frame and the second arm frame based on the detected position error, so that the position error between the first arm frame and the second arm frame is equal to zero. Compared with the prior art, the present invention is advantageous at least in that an automatic deviation correction device is provided on the gantry arm frame, and thus the position error between both side arm frames can be automatically controlled to zero, so that the gantry arm frame can be effectively prevented from being subjected to a force and deforming, and the radiation detector can receive the full ray, thereby improving the imaging quality.