论文部分内容阅读
为准确检测球床式高温气冷堆装卸料系统不锈钢管道内燃料球的过球信息,该文设计了外装式过球信息检测系统。该系统的涡流传感器采用了双半圆结构,其安装和维护都无需破坏过球管道。信号处理部分采用了直接数字频率合成技术(DDS)、高速鉴频鉴相技术和幅值检波技术,有效提取了过球信号,并通过阈值判断和形状比较相结合的方法,准确区分了过球信号和干扰信号。实验表明,在过球速度为0.1~10m/s范围内,该系统能够准确地检测离散过球和连续过球。
In order to accurately detect the over-ball information of the fuel ball in the stainless steel pipe of the ball-bed high-temperature gas-cooled stack loading and unloading system, the article designs the over-ball information detection system. The system’s eddy current sensor uses a double semi-circular structure, its installation and maintenance without breaking the ball pipe. Signal processing part of the direct digital frequency synthesis (DDS), high-speed phase Kam differential detection technology and amplitude detection technology, the effective extraction of the ball signal, and through the combination of threshold judgment and shape comparison, accurately distinguish the ball over Signal and interference signal. Experiments show that the system can accurately detect the discrete passing and continuous passing in the speed range of 0.1 ~ 10m / s.