Pulsed X-ray generation method and pulsed X-ray generation device

Abstract

The invention provides a pulsed X-ray generation method and a pulsed X-ray generation device. A feedback signal processing unit of a high-voltage pulse generation system of the pulsed X-ray generation device receives a tube voltage feedback value signal and forms a close loop control circuit with a voltage setting value signal; a feedback signal processing unit of a tube current control system receives a tube current feedback value signal and forms a close loop control circuit with a current setting value signal; a signal generation unit of a control system generates a tube voltage analog value and setting value signal and inputs the signal to the high-voltage pulse generation system, and generates a tube current analog value and setting value signal and inputs the signal to the tube current control system; a feedback signal processing unit of the control system receives the tube voltage and tube current feedback value signals; and a time schedule control unit of the control system controls each unit according to a preset time schedule. The invention has the following advantages: the pulse frequency and the duty ratio are adjustable; each pulsed X-ray has good repeatability and uniformity; and the rising edge and the falling edge of a single pulse are steep.

Description

technical field [0001] The invention relates to X-ray technology, in particular to a method for generating pulsed X-rays and a device for generating pulsed X-rays powered by pulse trains. Background technique [0002] X-ray devices are more and more used in industrial and medical inspections. At present, X-ray generators are divided into DC mode and pulse mode. The X-ray generator in DC mode is a ray tube powered by DC high voltage, and the output is Continuous and uninterrupted X-rays. The X-ray generator in pulse mode emits pulsed X-rays, and the pulse frequency and duty cycle are adjustable. The X-ray generator in pulse mode can reduce the number of detected objects under the same imaging quality. In view of the radiation dose of X-rays, useless exposure of X-rays should be avoided in the detection process, especially in the medical detection process. Therefore, pulsed X-ray generators are more and more widely used. At present, there are two ways to generate pulsed X-ray...

AI Technical Summary

Problems solved by technology

However, the gate control tube has a short life and cannot be repaired after damage

[0003] Another way is to use the Marx generator to generate high-voltage pulses and add them to the X-ray tube. The disadvantage is that the time base is unstable, and the level condition of the switch state transition is a range value, not a strictly determined value. In addition, the circuit The i

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