Radiation Imaging Control Apparatus for Power and Noise Management
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Solution Overview
Problem
Conventional radiation imaging systems face challenges in ensuring sufficient image sensing time while saving power, leading to potential misshooting and image quality deterioration due to noise generation and improper sensor state management.
Innovation Solution
A radiation imaging system with a control apparatus that determines the remaining image sensing enable time and adjusts the operating states of the radiation detection unit and driving unit accordingly, ensuring the system is in an image sensing enable state only when sufficient time is available, thereby reducing noise and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the sensor is set in an image sensing enable state for a predetermined time to stabilize image quality, then image quality is improved, but power consumption increases and noise accumulates
Solution Approach 1:
The sensor alternates between image sensing enable state and disable state periodically. The control apparatus determines remaining time to judgment timing, and the sensor is set to enable state only when sufficient time remains, otherwise disabled. This periodic switching reduces power consumption while maintaining image quality when conditions permit.
Solution Approach 2:
The system dynamically changes the operating state parameter of the sensor based on remaining time calculations. When remaining time exceeds a threshold, the sensor operates in enable state; when insufficient, it switches to disable state. This parameter change optimizes the balance between image quality and power consumption.
2Manufacturing precision
If the sensor is set in an image sensing enable state for a predetermined time to stabilize image quality, then image quality is improved, but noise increases due to accumulated electric charges
Solution Approach 1:
The sensor periodically switches between enable and disable states. By disabling the sensor when remaining time is insufficient, the accumulation of electric charges that generate noise is prevented. This periodic action maintains image quality while suppressing noise generation.
Solution Approach 2:
The operating state parameter is dynamically changed based on remaining time conditions. When remaining time is insufficient, the sensor transitions to disable state, resetting electric charges and eliminating the source of noise while preserving image quality when conditions are favorable.
3Productivity
If the timeout time is shortened to save power and enable faster image sensing, then power consumption is reduced and productivity is improved, but the risk of misshooting increases when patient information input takes time
Solution Approach 1:
The control apparatus performs preliminary calculation of remaining time from initialization to judgment timing. Based on this preliminary assessment, it determines whether to set the sensor in enable or disable state before actual image sensing, preventing misshooting by ensuring adequate time availability.
Solution Approach 2:
The system uses feedback from the remaining time calculation to control sensor state. The control apparatus continuously monitors remaining time and adjusts sensor operation accordingly, providing feedback control that prevents misshooting while optimizing productivity.
4Use of energy by moving object
If the sensor is disabled to save power and reduce noise, then power consumption is reduced and image quality is maintained, but the system may fail to perform desired radiation imaging when operator does not notice the disabled state
Solution Approach 1:
The control apparatus performs preliminary determination of remaining time and sensor state requirements before disabling the sensor. This preliminary action ensures that the sensor is only disabled when remaining time is genuinely insufficient, preventing unintended imaging failures while maintaining power savings.
Solution Approach 2:
The system implements feedback control where the control apparatus continuously monitors remaining time and sensor state, adjusting operation accordingly. This feedback mechanism prevents false disabling that could lead to imaging failures while maintaining power efficiency when appropriate.
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 approach allows for efficient radiation imaging while saving power and minimizing the risk of misshooting by ensuring a sufficient image sensing time and reducing noise-related image quality deterioration.
Implementation Method 1
a sensor array formed by stacking scintillators on photoelectric conversion elements (conversion elements) or the like which convert radiation into image signal electric charges (electrical signals)
Implementation Method 2
The radiation imaging apparatus causes the sensor array to convert radiation into visible light through the scintillators
Data Source
AI summary
A radiation imaging system includes a radiation imaging apparatus including a radiation detection unit in which conversion elements configured to convert radiation into electric charges are arranged and a driving unit configured to drive the radiation detection unit, and a control apparatus configured to control the radiation imaging apparatus. The control apparatus includes: a determination unit configured to determine whether a remaining image sensing enable time acquired by subtracting an elapsed time from initialization of the radiation detection unit from an image sensing enable time for a radiation image in use of the radiation detection unit is not less than a threshold time; a control unit configured to change operating states of the radiation detection unit and the driving unit in accordance with the determination result; and an operation detection unit configured to detect an operation instruction for the control unit.