Time-Division Cathode Control for Multi-Focus X-Ray Sources
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Solution Overview
Problem
Existing X-ray source control systems for multi-focus X-ray sources are inefficient due to the need for multiple driver and collection circuits for each cathode control stage, leading to high resource consumption, increased costs, and limited flexibility in adjusting output current and extending the system.
Innovation Solution
A time-division multiplexing control device and system that uses a common control driver circuit and data collection circuit for multiple cathode control channels, allowing instantaneous switching and flexible control of each cathode's working state through a time-division multiplexing principle, reducing the number of required circuits and enhancing system flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If each cathode control stage corresponds to one driver circuit and one collection circuit, then the control precision and data collection accuracy for each cathode is improved, but the device complexity, resource consumption, and cost increase significantly
Solution Approach 1:
The patent merges multiple driver circuits into a single driver circuit that serves multiple cathode control stages through time-division multiplexing. The driver circuit sequentially drives different cathodes at different time slots, reducing the total number of driver circuits from N (one per cathode) to 1 (shared by all cathodes). Similarly, multiple collection circuits are merged into a single collection circuit that collects working state data from multiple cathodes in a time-division manner.
Solution Approach 2:
The patent implements periodic action by using time-division multiplexing to sequentially activate different cathodes in periodic time slots. Each cathode is driven and its data is collected in alternating periodic cycles, allowing a single driver and collection circuit to serve multiple cathodes over time while maintaining precise control and accurate data collection for each individual cathode.
2Measurement precision
If multiple driver circuits and collection circuits are used for multiple cathode control stages, then the control precision for each cathode is improved, but the cost and resource consumption increase
Solution Approach 1:
The patent combines multiple driver circuits and collection circuits into shared resources that are time-division multiplexed across multiple cathode control stages. This merging approach maintains the functional capability to precisely control and collect data from each cathode while reducing the total quantity of hardware resources required.
Solution Approach 2:
The driver circuit and collection circuit are designed to be universal and multi-functional, capable of serving multiple different cathode control stages. The same driver circuit can drive different cathodes at different time slots, and the same collection circuit can collect data from different cathodes, making the hardware resources universally applicable across multiple functions.
3Reliability
If a dedicated driver circuit and collection circuit are assigned to each cathode control stage, then the reliability of control for each cathode is improved, but the adaptability and ease of extension deteriorate
Solution Approach 1:
The patent introduces dynamic time-division multiplexing control that can flexibly allocate time slots to different cathodes based on operational requirements. The system dynamically switches between different cathodes in a controlled manner, maintaining reliable control for each cathode while providing adaptability to change the number of active cathodes and their operational parameters without requiring hardware changes.
Solution Approach 2:
The universal driver and collection circuits are designed to work with multiple cathode control stages, providing both reliable control through dedicated time slots and adaptability through flexible configuration. The system can adapt to different numbers of cathodes and different operational modes while maintaining control reliability through the time-division multiplexing mechanism.
Data Source
AI summary
A time-division multiplexing control device applied to a distributed X-ray source includes: a first switch module with a number of first switches that receive a high-voltage signal and a first control signal, selectively turning on one of the plurality of first switches according to the first control signal and sending the high-voltage signal through the first switch turned on; and a cathode control module including a plurality of cathode control stages in one-to-one correspondence with the plurality of first switches, used for receiving the high-voltage signal from the first switch module and sending working state data through a cathode control stage corresponding to the first switch turned on in the plurality of cathode control stages, where each cathode control stage includes a cathode control unit and a cathode.