Radiation Detector Disturbance Analysis via Multi-Line Signal Sampling
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Solution Overview
Problem
Non-linking radiation image capturing apparatuses face issues with erroneous detection of electromagnetic waves as radiation, leading to repeated failures in capturing radiation images and potential irradiation during capture attempts, especially in environments with high electromagnetic interference.
Innovation Solution
A radiation image capturing apparatus with a hardware processor that samples signals from radiation detecting elements, bias lines, and scanning lines multiple times to determine if the environment is under disturbance, using digital signal processing to differentiate between radiation and electromagnetic interference before initiating detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the radiation image capturing apparatus detects radiation based on electric signal output from the radiation detecting unit, then the apparatus can autonomously detect radiation irradiation, but the apparatus may erroneously detect electromagnetic waves as radiation in disturbance environments
Solution Approach 1:
The patent introduces a disturbance environment determination unit as an intermediary that processes signals from multiple sources (signal line, bias line, scanning line) to distinguish between actual radiation and electromagnetic interference. This intermediary analysis layer prevents erroneous detection by evaluating multiple signal characteristics before confirming radiation detection.
Solution Approach 2:
The patent changes the detection parameters by sampling signals multiple times within a predetermined period and analyzing temporal variations in signal amplitude and waveform characteristics. By examining how signal parameters change over time rather than relying on single-point detection, the system can differentiate between radiation signals and electromagnetic disturbance patterns.
2Reliability
If the apparatus determines detection error after detecting radiation, then error detection capability is provided, but time is consumed and capturing cannot be performed in disturbance environments
Solution Approach 1:
The patent performs preliminary disturbance environment determination by continuously monitoring and analyzing signals from multiple lines before final radiation detection confirmation. This preliminary action of evaluating signal characteristics across multiple channels in advance allows the system to quickly identify disturbance conditions and prevent erroneous detection without consuming excessive time during the main detection process.
Solution Approach 2:
The patent implements continuous signal sampling and analysis from multiple lines (signal line, bias line, scanning line) simultaneously rather than sequential checking. This continuous multi-channel monitoring maintains constant surveillance of the detection environment, enabling rapid disturbance identification without interrupting the detection workflow.
3Productivity
If the apparatus repeatedly performs capturing in disturbance environments, then capturing attempts continue, but radiation may be irradiated erroneously and capturing failures increase
Solution Approach 1:
The patent applies preliminary anti-action by using the disturbance environment determination unit to proactively identify and flag electromagnetic disturbance conditions before they cause erroneous radiation detection. By detecting disturbance patterns in advance through multi-line signal analysis, the system can prevent erroneous irradiation by alerting the operator or blocking the irradiation command before it is executed.
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
Enables accurate determination of whether the apparatus is in a disturbance environment, preventing erroneous detection and ensuring successful radiation image capture by discontinuing detection operations when interference is detected, thus reducing capture failures and avoiding unnecessary irradiation.
Implementation Method 1
a plurality of radiation detecting elements 34 which are positioned two-dimensionally
Data Source
AI summary
A radiation image capturing apparatus includes a plurality of radiation detecting elements; a switch element; a scanning line; a signal line; a bias line; a hardware processor; and a reader which reads image data based on detection of irradiation, the image data based on an amount of charge accumulated in the plurality of radiation detecting elements. The hardware processor samples a signal a plurality of times, the signal based on a current of at least one of the currents flowing in the signal line, the bias line, the scanning line, and the detector line within a predetermined term and the hardware processor obtains a digital signal. The hardware processor calculates the obtained digital signal. The hardware processor determines whether the radiation image capturing apparatus is under a disturbance environment based on a result of calculation.