A Method of Online Regulating High Voltage of Radiation Detector Based on Digital Potentiometer
A technology of digital potentiometer and radiation detector, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve the problem of not meeting industrial needs and engineering applications, increasing the radiation dose of workers, and easy jitter of mechanical potentiometer taps and other problems, to achieve the effect of reducing the possibility of unnecessary radiation dose, saving working time, and small fluctuation of high voltage value
Active Publication Date: 2016-03-23
NO 719 RES INST CHINA SHIPBUILDING IND
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But this method also has some disadvantages: the tap of the mechanical potentiometer is easy to shake, cannot be stabilized for a long time, the accuracy is not high, and it does not support online adjustment
In some workplaces, when the high voltage of the radiation detector needs to be adjusted due to changes in site requirements, the environment, or the detector itself, it is necessary to send staff to the equipment installation site, turn on the equipment, and adjust the mechanical potentiometer to adjust the high voltage, which will increase Possibility of on-site workers receiving radiation doses
Traditional radiation detector high-voltage adjustment methods can no longer meet industrial needs and engineering applications
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[0025] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments.
[0026] Such as figure 1 As shown, this embodiment provides a method for adjusting the high voltage of a radiation detector online based on a digital potentiometer. The hardware used in this method consists of an ARM chip, a digital potentiometer, an isolation chip, a high voltage module, a voltage divider circuit, and an A / D Composed of conversion chip and RS232 serial port; the ARM chip is connected to the digital potentiometer and the A / D conversion chip through the isolation chip, the high voltage adjustment terminal of the high voltage module is connected to the digital potentiometer, and the high voltage output terminal of the high voltage module is connected to the digital potentiometer respectively The radiation detector is connected with the voltage divider circuit, the output terminal of the voltage div...
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The invention relates to the technical field of nuclear radiation protection, and provides a digital potentiometer-based method for online adjustment of high voltage of a radiation detector. A hardware part used for the method is composed of an ARM chip, a digital potentiometer, an isolating chip, a high-voltage module, a voltage dividing circuit, an A / D (analogue / digital) conversion chip and an RS232 (recommend standard 232) serial port, wherein the ARM chip is connected with the A / D conversion chip through the isolating chip and the digital potentiometer; a high-voltage adjusting end of the high-voltage module is connected with the digital potentiometer; a high-voltage output end of the high-voltage module is connected with the radiation detector and the voltage dividing circuit; an output end of the voltage dividing circuit is connected with the A / D conversion chip; the ARM chip is connected with an upper computer through the RS232 serial port. The method disclosed by the invention can be applied to online adjustment of high voltage of the radiation detector.
Description
technical field [0001] The invention relates to the technical field of nuclear power radiation protection, in particular to a method for online adjusting the high voltage of a radiation detector based on a digital potentiometer. Background technique [0002] At present, the traditional method for adjusting the high voltage of the radiation detector is: adjust the high voltage through a mechanical potentiometer and a voltage divider circuit. The advantage of this method is: simple structure. However, this method also has some disadvantages: the tap of the mechanical potentiometer is easy to shake, cannot be stabilized for a long time, the accuracy is not high, and it does not support online adjustment. However, in some workplaces, the precision of the potentiometer is required to be high, and the resistance value cannot be changed. In some workplaces, when the high voltage of the radiation detector needs to be adjusted due to changes in site requirements, the environment or...
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IPC IPC(8): G05F1/56
Inventor 廖武夏炎金坦程翀左亮周王益元张磊金帆
Owner NO 719 RES INST CHINA SHIPBUILDING IND