Design Of Measurement And Control System For The Accelerator On Virtual Instrument

In order to improve the ability of automatic control and Control precision of High voltage charging and discharging process of accelerator, also hope to get rid of manual operation and realize the remote measurement and control under the strong radiation environment. It is very necessary to Develop a targeted Accelerator Control System.On the basis of analyzing the principle and characteristics of the accelerator,a scheme of measurement and control system based on virtual instrument technology is proposed.Virtual instrument technology takes advantage of the rapid development of computer technology, high-performance analog to digital converter, etc., and the introduction of a systematic development of software, so that improve performance while reducing costs.This paper developed the hardware and software of measurement and control systems. the accelerator of the charge and discharge control in the process of the discharge and microwave, parameters such as voltage, electric current measurement and processing have been Studied.Using NI data acquisition card and a graphical LABVIEW virtual instrument platform software automation control and measurement was carried out on the accelerator.Paper’s main work is as follows:First of all,Use Background and The research status and development trend both at home and abroad of Accelerator measurement and control technology was introduced.then Technical route is determined and The overall scheme of the control scheme is analyzed and designed.The system consists of hardware and software in two parts.In the hardware part,Based on the analysis of the accelerator on the basis of the working principle, measurement and control requirements,The control parts and measuring are analyzed respectively.Hardware mainly includes industrial control, data acquisition card, SCR module, TTL level conversion trigger module, microwave and electric signal acquisition module, temperature and humidity sensor, etc.data acquisition card is used as I/O interface In the measurement and control system.Then welding hardware platform design. Hardware platform finally integrated packaging for a chassis measurement and control device.In the software part,LABVIEW is used as a application development tools In the measurement and control system,Software part mainly consists of control module, parameter acquisition module, waveform display module, etc., through the control program control signals are given as well as to the electrical parameters of feedback control, finally to microwave, voltage and current waveform display and data processing, and developed a PC operating procedures.Accelerator control system software completed the charging voltage setting accelerator, accelerator magnetic field of the trigger signal delay, voltage, current, temperature and humidity, atmospheric pressure of switch parameters detecting, and microwave measurement, and the results of data processing, analysis, storage and waveform display. Modular integration control program finally.Finally,The accelerator control system with relativistic magnetron as the load was test many times.Experiments show that the measurement and control system is safe, efficient, stable and provides a good means for laboratory experimental work and to ensure the personal safety of the laboratory.