Radiation Imaging Apparatus Waiting Mode Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Radiation imaging apparatuses face challenges in maintaining image quality due to temperature changes affecting dark current noise, leading to reduced accuracy in offset correction and increased power consumption, especially when shared among different systems and used for varying frame rates.
Innovation Solution
A radiation imaging apparatus with a determination unit that selects between different waiting modes based on offset data acquisition methods, allowing for efficient temperature management and power conservation by switching between constant temperature maintenance and power-saving modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fixed dark method is used to acquire offset data in advance, then high frame rate can be implemented, but temperature change between offset data acquisition and actual image capturing reduces correction accuracy
Solution Approach 1:
The patent applies dynamics by making the waiting mode adjustable based on operational requirements. The control unit dynamically switches between first waiting mode (maintaining temperature) and second waiting mode (reducing power consumption) according to whether high frame rate operation is needed, allowing the system to adapt its temperature stability behavior to the current productivity requirements.
Solution Approach 2:
The patent changes the temperature control parameter dynamically. By adjusting the waiting mode parameter, the system changes the temperature stability behavior - in first waiting mode the temperature is maintained stable, while in second waiting mode the temperature can vary more, thereby adapting the thermal parameters to match the operational mode.
2Reliability
If waiting mode is fixed to maintain constant temperature, then temperature change is suppressed, but power consumption increases and component lifespan decreases
Solution Approach 1:
The system dynamically adjusts the waiting mode based on whether high frame rate operation is required. When high frame rate is needed, the first waiting mode maintains temperature stability. When not needed, the second waiting mode reduces power consumption by allowing temperature variation, thus dynamically balancing reliability and energy consumption.
Solution Approach 2:
The system periodically evaluates whether high frame rate operation is required and switches between waiting modes accordingly. This periodic assessment allows the system to maintain temperature stability only when necessary for correction accuracy, reducing power consumption during periods when high frame rate is not required.
3Measurement precision
If intermittent dark method is used to acquire offset data before each image capturing, then correction accuracy is maintained, but frame rate decreases
Solution Approach 1:
The system dynamically selects between fixed dark and intermittent dark methods based on the required frame rate. When high frame rate is needed, fixed dark is used with first waiting mode to maintain temperature stability. When frame rate is not critical, intermittent dark can be used with second waiting mode to reduce power consumption.
Data Source
AI summary
A radiation imaging apparatus that is used in a radiation imaging system. The radiation imaging apparatus includes an image capturing unit configured to output an image signal based on radiation transmitted through an object and offset data which is acquired by a plurality of acquisition modes and used for correcting the image signal, and a determination unit configured to determine which of a plurality of waiting modes is to be used to make the image capturing unit wait. The determination unit makes a determination based on the acquisition mode of the offset data.