X-ray Device Standby Power Reduction via Segmented Control
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Solution Overview
Problem
Conventional X-ray devices consume significant standby power due to large capacity contactors used to cut off power supply to X-ray tubes and high voltage generators, which limits energy savings.
Innovation Solution
An X-ray device equipped with an electromagnetic switch and a control circuit that reduces or cuts off power supply to both the X-ray irradiation means and the electromagnetic switch during standby mode, using a judging mechanism to determine when to enter standby mode based on user-defined thresholds, thereby minimizing standby power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large capacity contactor is used to cut off power supply to the X-ray tube and high voltage generator, then the power supply can be effectively disconnected, but the standby power consumption increases
Solution Approach 1:
The power supply system is segmented into multiple independent control levels: the main power supply to X-ray irradiation means and a separate power supply to the electromagnetic switch. This allows selective disconnection of the electromagnetic switch power during standby mode while maintaining the ability to disconnect the main power when needed, thereby reducing standby power consumption without compromising the reliability of power supply disconnection.
2Use of energy by stationary object
If power supply to the electromagnetic switch is reduced or cut off during standby mode, then standby power consumption decreases, but the response time to resume operation increases
Solution Approach 1:
The electromagnetic switch is designed to close automatically when power is restored, eliminating the need for manual intervention or complex control sequences. This preliminary arrangement ensures that the system can resume operation quickly after standby mode, minimizing the time loss while still achieving significant standby power reduction.
3Device complexity
If the electromagnetic switch structure allows closing only while predetermined electric power is supplied, then the switch can be simplified, but control flexibility is reduced
Solution Approach 1:
The electromagnetic switch structure is designed to dynamically adapt its state based on power supply conditions. When power is supplied, the switch can close; when power is reduced or cut off during standby, the switch opens. This dynamic behavior provides both structural simplicity and operational flexibility, allowing the system to automatically adjust to different operational modes without complex control logic.
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 configuration effectively reduces standby power consumption in X-ray devices, especially when using X-ray tubes or high voltage generators, by ensuring power is only supplied when necessary, thus enhancing energy efficiency and maintaining operability during resumed use.
Implementation Method 1
an electromagnetic switch configured to open/close a power supply line to the X-ray irradiation means
Data Source
AI summary
An X-ray device may comprise a timer for monitoring a nonoperation time, such as a time from a previous signal input to a control circuit to the next input signal. When the timer detects that the nonoperation time has exceeded a preset time, the control circuit controls the contactors and so as to turn off the contactors. The standby power of the X-ray device when the frequency of use during the nonoperation time is low can be reduced. Further, when the next signal is input to the control circuit, the control circuit controls the contactors so as to close the contactors, thereby restoring power supply. Therefore, when the next signal is input to the control circuit, the X-ray device is turned to a usable state.