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本文描述了研制的临界事故监测报警系统。整个系统由报警仪和测量仪两个独立部分组成。文中介绍了方案的考虑、设计的原则、电路的性能、使用中发现的缺点和改进意见。报警仪以电离室为γ辐射探测器、当累积剂量达到预定阈值后它才动作,具有本底补偿能力,采用三取二电路以提高其可靠性。测量仪主要由电离室与静电计电路组成,它能连续测量并记录γ辐射剂量率,有包括六个量级的线性自动换量程的电路和包括五个量级的对数电路。
This article describes the development of critical incident monitoring and alarm system. The entire system consists of alarm and measuring instrument two independent parts. This article describes the program considerations, design principles, the performance of the circuit, the shortcomings found in the use of and improvements. Alarm device to the ionization chamber γ radiation detector, when the cumulative dose reaches a predetermined threshold after it moves, with the background compensation ability, the use of three take two circuits to improve its reliability. The measuring instrument is mainly composed of ionization chamber and electrometer circuit. It can continuously measure and record the dose rate of γ radiation. It includes a circuit with linear auto-ranging of six orders of magnitude and a logarithmic circuit with five orders of magnitude.