A wireless capacitive high ionizing radiation dose sensor

Abstract

The invention discloses a wireless capacitive high ionizing radiation dose sensor, which includes a sensor base, an inductance coil, a capacitive sealing shell, a capacitive fixed plate, an electret, a capacitive variable plate and working gas. The sealed shell is installed on the base of the sensor, and the two form a shell structure with a sealed cavity, and the fixed capacitor plate, the electret, the variable capacitor plate and the working gas are all located in the sealed cavity. In the shell structure; this scheme uses a wireless capacitive sensor to achieve dose measurement in a high ionizing radiation environment. It uses electromagnetic coupling wireless power supply and signal reading, small size, real-time in-situ dose measurement in high-dose environment, and reduces the dose exposure of workers.

Description

technical field [0001] The invention relates to the technical field of ionizing radiation detection, in particular to a wireless capacitive-based high ionizing radiation dose sensor. Background technique [0002] There will be some areas of strong radiation (≥0.5Sv / h) on the site of nuclear facilities. Due to the high dose rate in this area, there is a risk of accidental exposure of workers. Therefore, it is necessary to monitor the radiation level in this area in real time in order to formulate corresponding radiation protection optimization work program. Conventional GM counter tube type and semiconductor type dose rate meter have small measurement range, poor radiation resistance and short service life, which cannot meet the requirements of on-site monitoring. At present, the dose rate meters that can be used in strong radiation areas are mainly cavity ionization chambers and chemical reagent measurement methods. The measurement range of the cavity ionization chamber ca...

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Problems solved by technology

The measurement range of the cavity ionization chamber can meet the measurement requirements, but the ionization chamber contains more electronic devices for signal processing, which has poor radiation resistance and short service life; for the method of using chemical reagents to measure the dose rate, that is According to the reaction between radiation and chemical reagents, and then use the matching analysis system to measure the dose rate, although the radiation resistance is strong, the dose rate data cannot be given in real time, and an additional data analysis system is required

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