2D Array X-Ray Source Eliminates Slip Rings
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Solution Overview
Problem
Current CT devices face limitations in reliability, stabilization, and inspection speed due to the use of slip rings, and existing distributed x-ray sources have issues with heat resistance, complex structures, and poor imaging quality.
Innovation Solution
A two-dimensional array distributed x-ray apparatus with a vacuum box containing a plurality of thermionic electron transmitting units arranged in a plane, an anode with targets corresponding to each unit, and a grid-controlled power supply system, allowing for flexible control and heat dissipation, enabling multiple visual angles without moving the light source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If slip ring is used to move x-ray source and detector, then inspection speed can be increased, but reliability and stabilization decrease
Solution Approach 1:
The invention divides the single x-ray source into multiple independent x-ray sources arranged in an array. Each source can be independently controlled to emit x-rays at different angles, eliminating the need for mechanical rotation and slip rings while achieving multiple viewing angles simultaneously
Solution Approach 2:
The invention replaces the mechanical rotation system (slip ring and rotating source) with a static array of multiple x-ray sources. The mechanical movement is substituted by electronic control of multiple fixed sources, improving reliability while maintaining inspection speed
2Temperature
If rotating target x-ray source is used, then heat resistance of anode target spot is improved, but structure complexity increases
Solution Approach 1:
The invention segments the single target spot into multiple target spots arranged in an array, corresponding to multiple electron transmitting units. This distributes the heat load across multiple targets rather than rotating a single target, simplifying the structure while improving heat resistance
Solution Approach 2:
The invention transitions from a single-point target to a two-dimensional array of targets. This dimensional change allows heat dissipation across a larger area without requiring mechanical rotation, reducing structural complexity
3Adaptability or versatility
If multiple dependent conventional x-ray sources are arranged closely, then multiple visual angles are realized, but cost increases and imaging quality decreases
Solution Approach 1:
The invention uses multiple independent electron transmitting units that are controlled to emit electrons in a coordinated sequence, creating virtual target spots that appear at different positions. This copying approach achieves multiple visual angles without the physical spacing problems of multiple conventional sources, improving imaging quality
4Adaptability or versatility
If carbon nano tubes are used as cold cathodes, then distributed x-ray source is achieved, but manufacturing complexity increases and service life decreases
Solution Approach 1:
The invention changes the cathode material from carbon nano tubes to thermionic cathodes, which have proven longevity and reliability. This parameter change in material selection maintains the distributed source capability while significantly extending service life
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 configuration enhances system stability, reliability, and inspection efficiency by reducing target spot spacing, increasing density, and allowing flexible x-ray transmission configurations, such as linear or annular arrays, while maintaining high x-ray intensity and long service life.
Implementation Method 1
The cathode is a directly-heated spiral tungsten filament. When in operation, it is heated to a high-temperature state by current, thus generating thermal-transmitted electronic beam current.
Implementation Method 2
The electrons generated by the cathode move towards the anode under the effect of electric field and ram the surface of the target, thereby the x-ray is generated.
Data Source
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AI summary
A two dimensional array distributed x-ray apparatus of this disclosure comprises: a vacuum box which is sealed at its periphery, and the interior thereof is high vacuum; a plurality of electron transmitting units (1) arranged in one plane in a two dimensional array on the wall of the vacuum box; an anode (2) having targets corresponding to the plurality electron transmitting unit arranged in parallel with the plane of the plurality of electron transmitting units in the vacuum box; a power supply and control system having a high voltage power supply connected to the anode, a filament power supply connected to each of the plurality of the electron transmitting units, a grid-controlled apparatus connected to each of the plurality of electron transmitting units, a control system for controlling each power supply; wherein the anode comprises: an anode plate made of metal and parallel to the upper surface of the electron transmitting unit; a plurality of targets arranged on the anode plate and disposed corresponding to the positions of the electron transmitting unit, the bottom surface of the target is connected to the anode plate and the upper surface of the target has a predetermined angle with the anode plate.