Start control system and method of X-ray machine

Abstract

The invention belongs to the technical field of radiodiagnosis instruments, and relates to a starting control method of an X-ray machine, which comprises the following steps: firstly, calculating the starting frequency of variable frequency starting, and adjusting the voltage to be the minimum value; then carrying out open-loop frequency soft start; meanwhile, the mA value of the X-ray machine is detected cycle by cycle according to the operation frequency, and whether the mA value of the X-ray machine reaches a current starting threshold value or not is judged; when the mA value of the X-ray machine is equal to or larger than the current starting threshold value, the voltage is adjusted to a target set value, and closed-loop frequency adjustment is started to enable the mA value of the X-ray machine to be stable; and finally, current soft start is carried out to adjust to the mA rated value of the X-ray machine, so that the soft start automatic adjustment of the X-ray machine is realized, and the labor and time cost is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of radiological diagnostic instruments, and in particular relates to a start-up control system and method of an X-ray machine. Background technique [0002] The adjustment process of the X-ray machine is to detect the mA value of the X-ray machine as the feedback amount, and then perform PID calculation to output the frequency value to achieve the purpose of stabilizing the secondary current; in order to prevent the insufficient preheating of the X-ray tube filament from affecting the safe operation of the X-ray machine, When starting the machine, a reasonable starting method should be used. The X-ray tube filament can be fully preheated during the slow start process, but the effective working life of the X-ray tube is shortened, resulting in energy waste and low work efficiency; too fast start-up mode is likely to cause damage to the X-ray machine and compare the instantaneous power requirements of the powe...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a start-up control system and method for an X-ray machine. Achieve automation and consistency, low production efficiency; a single closed-loop adjustment cannot guarantee continuous soft start before the current of the X-ray machine reaches the rated value, and it is very easy to overshoot the filament current and cause a technical problem of false protection

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