Radiation Detector Intermediate Plate Noise Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Radiography apparatuses face noise and image non-uniformity issues due to electrical noise from integrated elements and heat generated by read out integrated circuits, which affect the quality of radiation images.
Innovation Solution
A radiation detector with an intermediate plate that is electrically connected to the ground line of a printed circuit board, providing a conductive metal layer for noise shielding and thermal conductivity to manage heat, ensuring stable radiation images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the read out integrated circuit is mounted on the printed circuit board to process radiation detection signals, then the radiation detection capability is improved, but heat is generated which increases the operating temperature of the radiation detection panel causing image non-uniformity
Solution Approach 1:
A heat insulating layer is introduced as an intermediary between the printed circuit board and the radiation detection panel. This intermediate layer blocks heat transmission from the read out integrated circuit to the radiation detection panel, maintaining stable operating temperature and preventing image non-uniformity while allowing the read out circuit to continue processing detection signals
2Area of stationary object
If elements are highly densely mounted on the printed circuit board to integrate constituent parts within standardized size, then the device size is reduced, but electrical noise is generated which affects image quality
Solution Approach 1:
A ground line pattern is formed on the printed circuit board as an intermediary shielding structure between the densely mounted elements and the radiation detection panel. This ground pattern acts as an electromagnetic shield that blocks electrical noise from reaching the detection panel, allowing high-density mounting while maintaining image quality
Solution Approach 2:
The printed circuit board is designed with localized ground shielding patterns specifically positioned between noise-generating elements and the radiation detection panel. This creates different functional zones on the circuit board: high-density element mounting areas, ground shielding zones, and detection signal areas, with each zone optimized for its specific function
3Object-generated harmful factors
If the intermediate plate is made highly conductive to shield noise, then noise shielding capability is improved, but radiation transmittance is reduced
Solution Approach 1:
The intermediate plate is constructed as a composite structure combining a heat insulating material with a ground line pattern formed on its surface. This composite design provides both thermal insulation and electromagnetic shielding through the ground pattern, while the base material maintains high radiation transmittance. The ground line pattern acts as a distributed shielding network that blocks noise without requiring solid continuous metal coverage
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 solution minimizes ground loop noise and effectively releases heat, resulting in stable and sharp radiation images with improved noise tolerance.
Implementation Method 1
the intermediate plate... thermal conductivity to manage heat, effectively releases heat
Implementation Method 2
a radiation detection panel converting radiation incident from the outside of the housing into an electric signal
Data Source
AI summary
The present invention proposes a radiation detector including a housing, a radiation detection panel accommodated in the housing and converting radiation incident from the outside of the housing into an electric signal, a printed circuit board electrically connected to the radiation detection panel and an intermediate plate that is disposed between the radiation detection panel and the printed circuit board, supports the radiation detection panel, and is electrically connected to the ground line of the printed circuit board, wherein the intermediate plate is transmissive to the radiation.