Design Of Control System Based On X-ray Tube Test Bench

In recent years,because of its excellent transmission ability and other advantages,X-ray is widely used in medical imaging,security detection,industrial flaw detection and other fields,playing an important role.As the output element of X-ray,the quality of X-ray tube fundamentally determines the overall performance of the transmission instrument,so the detection of the performance parameters of X-ray tube is very important.As a very important instrument in the production process of X-ray tube,the X-ray sophisticated testing system has a significant impact on the quality and service life of the ball tube.The system is mainly composed of high voltage generator and control software.The control system involves a series of tasks such as control strategy,parameter acquisition,etc.At present,most of the control schemes are tested by the high-voltage power supply system and the oscilloscope's semi-automatic test system.However,because the output voltage of the high-voltage power supply is very high,there is a great threat to the safety of the operators.Moreover,the cost of obtaining multiple parameters of the multi-channel oscilloscope is increased,the channel of the oscilloscope is limited and inconvenient to expand,and the waveform generated by the oscilloscope is not convenient for online analysis Handling and other shortcomings.In this paper,a control model of X-ray tube sophisticated test system which can be controlled remotely is proposed,and the related hardware and software are built.The control system is mainly composed of the embedded control system and LabVIEW host computer.The two systems interact with each other through network communication,and cooperate to complete the tasks of automatic process control,waveform acquisition,host computer waveform display,etc.The hardware of the embedded control system is mainly composed of FPGA and a series of peripheral circuits,including isolation circuit,AD circuit,DA circuit,transmission control circuit,communication circuit,etc.In the software,Verilog hardware programming language is used to write sampling program to control the high-speed AD chip,so as to realize the fast acquisition of high-voltage power pulse waveform of the test bench,and largely restore the generation track of pulse waveform.A Nios II soft core is built in FPGA to customize CPU and peripherals and realize the joint programming of Verilog language and C language.?C/OS-II embedded operating system is transplanted and tailored in the soft core to coordinate logic control and communication interaction,which greatly facilitates the programming of developers.A display and control interface of upper computer is designed by using LabVIEW software.The remote control of X-ray tube test bench is realized by network communication.Finally,the functions of each part of the control system are verified with the help of oscilloscope and other tools.The experimental results show that the system has perfect functions and reliable performance,and has good application and reference significance.