常压空气网栅脉冲电离室测氡仪的研制

Development of Emanometer of Normal Atmosphere Air Mesh Grid Pulse Ionization Chamber

针对空气中氡的危害性问题,设计出常压空气网栅脉冲电离室型测氡仪,可以快速有效测量出空气中氡含量,确保环境安全性。仪器主要包括常压空气网栅脉冲电离室,信号放大与甄别和单片机系统。信号放大部分采用高阻抗低噪声集成场效应管放大集成电路取代场效应管放大,大幅提高了仪器的抗干扰能力和稳定性。

Aiming at harmfulness of radon in the air, normal atmosphere air mesh grid pulse ionization chamber Emanometer has been developed, which can measure radon content in the air effectively. Emanometer is composed of normal atmosphere air mesh grid pulse ionization chamber, signal magnify and screen unit and MCU system. At signal magnify part, choosing high resistance and low noise field-effect tube amplified IC instead of fielcbeffect transistor increases its interference immunity and stability significantly.