CAJ | 학술논문

这里开发实现了一种较简单的分布式温度传感器的采集系统.通常情况下,运行在高频的数/模转换器很昂贵,因此提出一种采用低速数/模转换器的方法来降低成本,同时在低速数/模转换器之前加入采样保持电路,获得较小的采样分辨率、提高温度稳定性.该系统通过延迟采样保持电路和数/模转换相对于激光触发器的保持时间,可以测量沿光纤任何位置处的温度,其可以在短距离的光纤监测系统中得到广泛应用.
저리개발실현료일충교간단적분포식온도전감기적채집계통.통상정황하,운행재고빈적수/모전환기흔앙귀,인차제출일충채용저속수/모전환기적방법래강저성본,동시재저속수/모전환기지전가입채양보지전로,획득교소적채양분변솔、제고온도은정성.해계통통과연지채양보지전로화수/모전환상대우격광촉발기적보지시간,가이측량연광섬임하위치처적온도,기가이재단거리적광섬감측계통중득도엄범응용.
The purpose in this article is to develop and realize a simple data acquisition system of the distributed tempera-ture sensor. Normally the D/A converter operating in high frequency is expensive,so the method adopting low-speed D/A converter is proposed to reduce the cost. The sampling hold circuit is added before the low-speed D/A converter to obtain smaller sampling resolution and improve temperature stability. The temperature at any position along the optical fiber can be measured by delaying the hold time of sampling hold circuit and D/A conversion relative to the laser trigger. The system can be widely used in the opti-cal fiber monitoring system in short distance.