Radiography Detector Temperature Holding for Heat Cycle Protection
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Solution Overview
Problem
The miniaturization of detectors in CT apparatuses, particularly photon counting-type detectors, leads to issues with material and joint deterioration due to heat cycles, increased power consumption, and the need for improved temperature control to maintain sensitivity.
Innovation Solution
A temperature adjusting device and method that includes a processor to set a holding temperature during a power-saving mode based on maintenance time, controlling a temperature adjuster such as a heater or cooling fan to prevent rapid temperature changes and maintain detector integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the detector temperature is lowered during power-saving mode to reduce power consumption, then power consumption is reduced, but detector deterioration due to heat cycles is accelerated
Solution Approach 1:
The patent applies dynamics by making the temperature control strategy adaptive rather than static. The system dynamically adjusts the power-saving mode temperature control based on the detected maintenance time duration. For short durations (below threshold), the system maintains operation temperature to avoid heat cycle damage. For long durations (above threshold), it allows temperature reduction to save power. This dynamic adaptation resolves the contradiction between power consumption and detector durability.
Solution Approach 2:
The patent changes the temperature parameter based on maintenance time conditions. Instead of using a fixed temperature reduction strategy, the system modifies the target temperature parameter dynamically: maintaining operation temperature for short maintenance periods and reducing to power-saving temperature for long periods. This parameter change approach allows the system to optimize both power consumption and detector durability under different operating conditions.
2Use of energy by moving object
If the detector temperature is rapidly adjusted to save power, then power consumption is reduced, but material and joint deterioration due to heat cycles is accelerated
Solution Approach 1:
The patent applies preliminary anti-action by proactively preventing heat cycle damage before it occurs. The system detects the maintenance time duration in advance and preemptively adjusts the temperature control strategy. For short maintenance periods, it prevents temperature reduction that would cause harmful heat cycles. This preliminary protective action eliminates the harmful effect before it can damage the detector materials and joints.
Solution Approach 2:
The system provides beforehand cushioning by preparing a protective temperature control strategy in advance. When short maintenance time is detected, the system cushions against potential heat cycle damage by maintaining operation temperature, effectively creating a protective buffer that prevents the harmful temperature fluctuations from occurring in the first place.
3Reliability
If the detector is kept at operation temperature during power-saving mode, then detector durability is maintained, but power consumption increases
Solution Approach 1:
The system applies dynamics by making power consumption adaptive to actual needs. Instead of continuously reducing power consumption regardless of conditions, the system dynamically adjusts power usage based on maintenance time duration. For short periods, it consumes more power to maintain temperature and protect the detector. For long periods, it reduces power consumption by allowing temperature reduction. This dynamic power management resolves the contradiction between durability and power consumption.
Solution Approach 2:
The system implements periodic evaluation of maintenance time to determine the appropriate temperature control strategy. By periodically assessing the duration and adjusting the temperature control accordingly, the system optimizes the balance between power consumption and detector protection, switching between protection mode and power-saving mode based on the periodic maintenance time assessment.
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
Prevents detector deterioration from heat cycles by stabilizing temperature changes during power-saving modes, reducing power consumption, and ensuring consistent sensitivity.
Implementation Method 1
the detector is heated by a heater or cooled by a fan to prevent a change in sensitivity of the detector due to a change in ambient temperature
Implementation Method 2
the detector is heated by a heater or cooled by a fan to prevent a change in sensitivity of the detector due to a change in ambient temperature
Data Source
AI summary
A processor is configured to acquire instruction information for setting the radiography apparatus to a power-saving mode in which power consumption is smaller than power consumption in a case where the radiography apparatus is operated, and information on a maintenance time during which the power-saving mode is maintained, set a holding temperature of the detector during the power-saving mode in accordance with the maintenance time in a case where the maintenance time is equal to or longer than a predetermined first threshold value, and control driving of a temperature adjuster such that the temperature of the detector is set to the holding temperature.