Amplifier Temperature Control in Radiation Imaging
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Solution Overview
Problem
Existing radiation image capturing apparatuses face challenges in maintaining stable temperature conditions for amplifiers, leading to instability in radiation image information due to heat transfer and ambient temperature fluctuations, which affects the quality of the captured images.
Innovation Solution
A radiation image information capturing apparatus with a dual temperature adjustment system using Peltier devices and thermistors to control the temperature of the amplifier and signal line, preventing heat transfer and maintaining a stable temperature range of 20° C to 40° C, while keeping the power supply unit outside to minimize noise and ambient temperature influence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the amplifier is placed inside the radiation image capturing apparatus, then the device structure is integrated, but heat transfer from the amplifier to the converter occurs causing temperature instability
Solution Approach 1:
The apparatus is divided into distinct functional modules: the converter unit and the amplifier unit are physically separated. The converter is housed in one chamber while the amplifier is placed in a separate chamber, preventing direct heat transfer between them while maintaining functional integration through electrical connections.
Solution Approach 2:
A temperature control mechanism acts as an intermediary between the amplifier and the converter. This includes temperature sensors that monitor the converter's temperature and control systems that regulate the amplifier's operating temperature, preventing heat from affecting the converter.
2Power
If the amplifier operates at high power to amplify weak signals, then signal amplification is effective, but heat generation increases causing temperature fluctuations
Solution Approach 1:
The heat-generating amplifier is extracted from the converter's thermal environment. By placing the amplifier in a separate chamber with independent temperature control, the high power operation of the amplifier does not directly heat the converter, allowing both high amplification power and converter temperature stability.
Solution Approach 2:
Temperature sensors provide feedback on the converter's temperature to a control system. This feedback loop allows the system to adjust the amplifier's operation or activate cooling mechanisms when the converter's temperature approaches unacceptable levels, maintaining temperature stability during high-power amplification.
3Device complexity
If the power supply unit is placed inside the apparatus, then the system is fully integrated, but external noise and ambient temperature fluctuations affect the amplifier performance
Solution Approach 1:
Different parts of the apparatus have different environmental characteristics optimized for their function. The converter chamber maintains a stable, controlled temperature environment, while the amplifier chamber can be isolated from external noise and temperature fluctuations. The power supply is positioned to minimize its impact on the sensitive converter region.
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 solution effectively stabilizes the amplifier temperature, prevents heat transfer, and ensures high-quality radiation image information by accurately controlling temperatures and reducing external noise interference, resulting in a compact and efficient imaging system.
Implementation Method 1
a first temperature adjustment member disposed near one surface of the amplifier and the signal line, and a second temperature adjustment member disposed near another surface of the signal line
Implementation Method 2
a radiation image information capturing apparatus with a dual temperature adjustment system using Peltier devices and thermistors to control the temperature of the amplifier
Data Source
AI summary
Amplifiers are mounted on flexible boards connected to a solid-state detector. A first temperature adjustment member is disposed near one of the surfaces of the amplifiers and the flexible boards, and a second temperature adjustment member is disposed near the other surface of the flexible boards. The first temperature adjustment member adjusts the temperature of the amplifiers themselves, and prevents heat from being transferred from the one of the surfaces of the flexible boards to the solid-state detector. The second temperature adjustment member prevents heat from being transferred from the other surface of the flexible boards to the solid-state detector.