zero-crossing detector
英 [ˈzɪərəʊ ˈkrɒsɪŋ dɪˈtektə(r)]
美 [ˈzɪroʊ ˈkrɔːsɪŋ dɪˈtektər]
网络 过零检测器; 零交叉检测器; 零交点检测器
双语例句
- This paper discusses an all digital phase-locked loop with a zero-crossing detector and a loop filter.
本文讨论的全数字锁相环包括过零检测器和环路滤波器。 - The zero-crossing PLL i.e.hardware PLL, is comprised of PFD ( Phase-Frequency Detector), loop filter, VCO ( Voltage Control Oscillator) and frequency divider. It is really simple but poor in dynamic performance, and even worse in phase lock effect with distorted input voltage.
过零锁相即硬件锁相（PLL）由鉴相器、环路滤波器、压控振荡器及分频器组成，其原理和结构较简单，但动态性能较差，且在畸变电压输入时锁相效果变差； - Ased on the zero-crossing theory, a new kind of edge detector with orientation selectivity and variable scale is presented, and its discrete B spline form under a small scale is also given.
根据过零交叉的视觉机理，提出了一种具有方向选择性和变尺度的特征检测算子，并以B样条形式给出了其小尺度下的离散化图象处理形式。 - The Performance of a Digital Phase-Locked Loop with a Zero-Crossing Detector
使用过零检测器的数字锁相环的性能 - As a zero-crossing detector, LoG operator is sensitive to gray scale variation, is not easy to be interfered by non-uniform light field and can detect second order zero-crossing point that can accurately reflect local gray scale variation.
LoG算子作为一种零交叉检测器对局部灰度变化敏感，不易受非均匀光场的干扰，可检测出能较准确反映局部灰度变化的二阶过零点。 - A Directional and Scale-Variable Zero-Crossing Edge Detector
具有方向性、变尺度的过零交叉特征检测算子 - To meet the high speed requirement, a dynamic zero-crossing detector and current source to realize a precision charge transfer. It has a simple structure, high speed, small area.
针对高速的要求，采用了基于过零检测器的开关电容电路来实现采样保持功能，具有结构简单、速度快、面积小等优点。