X-Ray Temperature Planning to Prevent Thermal Overshoot
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Solution Overview
Problem
Modern CT devices suffer from retrospective cooling capacity control, leading to thermal overshoots and undershoots due to components being temperature-dependent, with cooling adjustments only made after exceeding predefined temperatures, resulting in control hysteresis and inefficient temperature management.
Innovation Solution
A method for controlling the temperature of X-ray devices by acquiring planning information based on operating parameters, identifying a planning temperature, and proactively adjusting heating and cooling capacities before and during operation to maintain a predefined temperature or temperature range, using a temperature control unit with cooling and heating elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If retrospective cooling control is used (adjusting cooling only after temperature threshold is exceeded), then the system responds to actual temperature needs, but thermal overshoots and undershoots occur due to control hysteresis
Solution Approach 1:
The system performs preliminary cooling actions based on planned operating parameters before the actual operation begins. The temperature control unit is controlled in advance based on a planning temperature identified from operating parameters, preventing thermal overshoots before they occur rather than reacting after thresholds are exceeded.
Solution Approach 2:
The system uses feedback from temperature sensors to continuously monitor actual temperatures and compares them with planning temperatures. This feedback loop allows the system to adjust cooling capacity dynamically during operation, maintaining temperatures within the predefined range without hysteresis.
2Reliability
If cooling capacity is increased to prevent thermal overshoot, then temperature stability improves, but energy consumption increases
Solution Approach 1:
The cooling capacity is made dynamic rather than static. The temperature control unit adjusts its cooling capacity continuously based on real-time temperature measurements and planned operating parameters. This allows the system to provide maximum cooling only when needed and reduce cooling when temperatures are stable, optimizing energy consumption while maintaining temperature precision.
Solution Approach 2:
The system changes the operating parameters of the cooling system based on the identified planning temperature and actual temperature measurements. By adjusting cooling capacity as a variable parameter rather than maintaining a constant high level, the system achieves precise temperature control with reduced energy consumption.
3Reliability
If proactive temperature control is implemented based on planning information, then thermal fluctuations are reduced, but system complexity increases
Solution Approach 1:
The system uses planning information containing operating parameters to identify a planning temperature before operation begins. This preliminary temperature assessment allows the temperature control unit to be pre-configured with appropriate cooling capacity, simplifying the control logic during operation while achieving reduced thermal fluctuations.
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 prevents thermal overshoots and undershoots, ensures uniform temperature control, reduces thermal fluctuations, extends component lifespan, and enhances operational efficiency by harmonizing thermal states and reducing waiting times.
Implementation Method 1
The CT device, in particular a detector of the CT device, comprises a plurality of electronic components, for example semiconductor sensors. Current CT devices are often cooled by a large flow of cooling air.
Implementation Method 2
By connecting to a cooling water line, a temperature of the cooling air can also be controlled, for example via a heat exchanger, and a constant cooling capacity can be achieved accordingly.
Data Source
AI summary
A method for controlling a temperature of an X-ray device, comprises: acquiring planning information, including at least one operating parameter of at least one component of the X-ray device, for a planned operation of the X-ray device; identifying a planning temperature of the at least one component of the X-ray device based on the at least one operating parameter; operating the X-ray device in accordance with the planning information; and controlling a temperature control unit of the X-ray device prior to and/or during operation of the X-ray device based on the planning temperature such that the temperature control unit controls a temperature of the at least one component of the X-ray device to a defined temperature or a defined temperature range by providing a heating capacity and/or a cooling capacity.