Radiation Imaging Apparatus Power Supply Mode Switching
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Solution Overview
Problem
Existing radiation imaging apparatuses face challenges in performing appropriate offset correction due to power supply limitations, leading to reduced imaging time and frame rates, as they do not consider the power supply form, resulting in impaired user convenience and image quality.
Innovation Solution
A radiation imaging apparatus that switches between two modes of obtaining offset correction data based on the power supply form, using a power control unit to determine if power is from a battery or an external source, and switching between obtaining offset correction data after imaging or in advance, optimizing power usage and image quality accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If offset correction data is obtained periodically to maintain accuracy, then image quality is improved, but power consumption increases and imaging time is reduced
Solution Approach 1:
The patent applies dynamics by making the offset correction data acquisition timing adaptable based on operating conditions. The system dynamically switches between acquiring offset correction data before imaging (when powered by external source) and after imaging (when powered by battery), allowing the offset correction accuracy to be maintained while optimizing power consumption according to the power supply form.
2Stability of the object's composition
If offset correction data is obtained before imaging, then temperature fluctuations are reduced, but power is consumed unnecessarily when using battery
Solution Approach 1:
The patent applies preliminary action by acquiring offset correction data before imaging when the apparatus is powered by an external power source. This preliminary acquisition of offset correction data allows temperature stabilization without compromising imaging time, as the external power source can support the additional power consumption during the pre-imaging preparation phase.
Solution Approach 2:
The patent inverts the conventional approach by acquiring offset correction data after imaging when powered by battery, rather than before imaging. This inversion allows the system to maintain offset correction functionality while minimizing power consumption during the limited battery-powered operation, effectively reversing the traditional timing of offset correction acquisition.
3Stability of the object's composition
If the same operation is always performed regardless of frame rates, then temperature fluctuations are minimized, but power consumption increases and user convenience deteriorates
Solution Approach 1:
The patent applies parameter changes by modifying the offset correction data acquisition timing based on the power supply parameter. The system changes its operation mode according to whether it is powered by battery or external source, adapting the offset correction acquisition timing to match the power availability and imaging requirements, thereby improving user convenience while maintaining temperature stability.
Data Source
AI summary
A radiation imaging apparatus having a battery and being operable in at least one of a plurality of power supply forms including the battery and an external power source, the apparatus comprising: a power control unit configured to determine the power supply form; and a control unit configured to control an operation of the radiation imaging apparatus, wherein in accordance with the power supply form, the control unit switches between a first obtaining mode of obtaining offset correction data after imaging of an object for each imaging of the object and a second obtaining mode of obtaining offset correction data obtained in advance before imaging of an object is done, and the control unit switches to the first obtaining mode if power is supplied from the battery and switches to the second obtaining mode if power is supplied from the external power source.