Pulse Generator With Mechanical Shielding For Radiation Control
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Solution Overview
Problem
Existing pulsed radiation sources are complex and costly due to their intricate structures, leading to high manufacturing and maintenance expenses.
Innovation Solution
A pulse generator with a shielding device and control system that intermittently shields radiation using a rotary table with leaves or a sliding leaf mechanism, made of radiation-impermeable materials like iron, tungsten, or lead, to produce pulsed radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a grid electrode with negative pulsed voltage is used to generate pulsed radiation, then pulsed radiation can be produced, but the structure becomes complex and costs increase
Solution Approach 1:
The patent extracts the pulse generation function from the complex grid electrode voltage control system and implements it through a simple mechanical shielding device that physically blocks radiation during non-pulse periods, eliminating the need for negative pulsed voltage application infrastructure
Solution Approach 2:
The patent replaces the electrical control mechanism (grid electrode with negative pulsed voltage) with a mechanical shielding system (rotating leaves or sliding blocks) that uses physical motion to control radiation emission, simplifying the overall system architecture
2Reliability
If a grid electrode with negative pulsed voltage is used to generate pulsed radiation, then pulsed radiation can be produced, but manufacturing and maintenance costs increase
Solution Approach 1:
The patent employs simple mechanical shielding components (leaves, blocks) that can be manufactured at low cost from common radiation-absorbing materials, replacing expensive grid electrode systems and their associated high-voltage power supplies
Solution Approach 2:
The patent removes the expensive electrical pulse generation infrastructure and retains only the essential radiation modulation function through inexpensive mechanical shielding elements
3Device complexity
If a shielding device is used to intermittently shield radiation, then structure is simplified, but the shielding device must be precisely controlled to achieve proper pulsing
Solution Approach 1:
The patent uses periodic rotation of the shielding device at controlled speeds to automatically generate pulsed radiation patterns, where the rotation period determines pulse frequency, reducing the need for complex real-time control systems
Solution Approach 2:
The rotating shielding device serves multiple functions simultaneously: it acts as the pulse generator, the timing mechanism, and the radiation modulator, eliminating the need for separate control systems for each function
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
The solution simplifies the structure of pulsed radiation sources, reducing costs while effectively generating pulsed radiation by intermittently blocking and allowing radiation, thus achieving a lower cost of ownership and operation.
Implementation Method 1
The control device may be configured to control the shielding device to intermittently shield radiation emitted from the radiation source to produce pulsed radiation
Data Source
AI summary
Pulse generators and radiation systems having the same are provided. A pulse generator may include a shielding device and a control device operably connected with the shielding device. The control device may be configured to control the shielding device to intermittently shield radiation emitted from the radiation source to produce pulsed radiation.