Radiographic Imaging Device Positioning for Movable Detector Alignment
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Solution Overview
Problem
Existing radiographic imaging devices face challenges in achieving precise alignment and positioning between the radiation source and detector, especially when using movable detectors that are not confined to a specific location, leading to distorted images.
Innovation Solution
The implementation of a radiographic imaging device with a movable detector and a positioning system utilizing base stations and tags, along with posture sensors, to calculate relative positions and postures, enabling precise alignment through a controller that drives the radiation source and detector to meet preset positional relationships.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a movable detector is used to expand imaging flexibility, then adaptability is improved, but positioning precision deteriorates
Solution Approach 1:
The patent introduces base stations and tags as intermediary elements to establish a positioning system. The base stations transmit signals to tags on the movable detector, enabling precise position and posture calculation without constraining the detector's mobility. This intermediary positioning system resolves the contradiction by decoupling the detector's physical movement from its positioning accuracy.
Solution Approach 2:
The patent replaces mechanical positioning constraints with an electromagnetic signal-based positioning system. Instead of using fixed mechanical guides or rigid structures to maintain detector position, the system uses wireless signals between base stations and tags to calculate and guide positioning, thereby maintaining both mobility and precision.
2Adaptability or versatility
If the detector is not confined to a specific location, then adaptability is improved, but alignment precision deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the controller continuously receives position and posture information from the positioning system, compares it with preset alignment requirements, and guides adjustments to achieve proper alignment. This closed-loop feedback ensures that even when the detector is movable, it can be precisely aligned with the radiation source during imaging.
3Measurement precision
If a positioning system with base stations and tags is implemented, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The base stations serve multiple functions: they transmit positioning signals, provide reference points for coordinate systems, and enable both position and posture calculation. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in system complexity while maintaining high positioning 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 solution allows for flexible imaging in various body positions, ensuring accurate alignment and reducing image distortion, thereby expanding the device's application scenarios.
Implementation Method 1
the base station is configured to transmit a signal to the tag and receive a signal returned from the tag
Implementation Method 2
The detector converts the received X-radiation rays into electrical signals to form an image
Data Source
AI summary
A radiographic imaging device and a positioning method thereof are provided. The radiographic imaging device includes a head, a movable detector, a first posture sensor, at least one first base station and at least one tag. The first base station is configured to transmit a signal to the tag and receive a signal returned from the tag. In the present disclosure, the movable detector is used, which can be placed without being limited to a specific location.