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sense signal 探向信號。

sense stress

The major researches in this thesis include : applying the digital signal processing technology and theory of signal detection & estimation to estimate carrier frequency of the sensing signal that reflects the measurand ; implementing the algorithm in labview , a virtual instrument development platform 本文的主要研究內容是:運用數字信號處理技術和信號檢測、估計的基本原理從無源、無線saw諧振器型傳感器的傳感輸出信號中提取出反映被測量的信號主頻,并在虛擬儀器軟件開發平臺labview上實現了測量算法。

Chapter 4 designs and determines the parameters of the algorithm adopted in the instrument system . analyzes and compares the different effects to frequency estimation when using digital filters with different group delay ; determines the data length , a parameter of frequency estimation ; introduces the method of available judgment of sensing signal and determines the judgment threshold as well 第四章設計和確定了儀器系統軟件算法的部分參數:分析和比較了不同群延遲特性的數字濾波器對頻率估計的影響;確定了影響頻率估計參數?數據長度的取值規律;給出了判斷傳感信號有效性的檢測方法并確定了檢測門限的取值規律。

In the thesis , a signal processing scheme of polarization - insensitive fiber optic michelson interferometric magnetic sensor is described : making the interferometer work near the quadrature with closed loop controlling working point method , the fundamental frequency component of the magnetic field sensing signals can be detected to measure the input direct current ( dc ) magnetic field by phase sensitive demodulation 本文主要介紹了偏振無關光纖michelson干涉型微弱磁場傳感器信號處理的方案:通過閉環控制工作點算法使干涉儀工作在正交工作點處,再利用相敏檢波算法提取傳感器輸出信號的基頻分量,以測量直流磁場的大小。

The algorithm principle , hardware design and software design of the scheme are proposed and experimentally demonstrated ; the main contents of this thesis are as follows : firstly , we study the principle of the fiber optic weak magnetic sensor based on magnetostrictive effect . after analyzing the characters of the magnetic field sensing signals , we know that the magnetic field sensing signals ’ fundamental component is proportional to input dc magnetic field 敘述了該方案的原理、軟硬件設計過程,并通過實驗進行了驗證,本文主要內容如下:首先,研究了基于磁致伸縮效應的光纖微弱磁場傳感器傳感原理以及輸出信號的特征,分析得出在干涉儀處于正交工作點時,傳感器輸出信號的基頻分量與被測直流磁場成正比關系。

The former includes air - bearing table system , rolling base driving system , angular displacement sensing system , and two foldable flexible plates with piezoelectric patches bonded ; the latter includes sensing signal processing and actuation signal generating circuits , and computer system composed of pc and two tms320f240 整個控制系統的處理器是一個由兩塊tms320f240和586微機組成的主從復合系統,通過對計算負荷的合理分配,有力地保證了控制的實時性。

When it is affected by different temperature , a sensing signal will be obtained through inside measuring loop 以熱電阻偶為感溫元件,當它感受到溫度變化時,通

Research on quorum sensing signal molecules of pseudomonas spp . isolated from food 食源假單胞菌群體感應信號分子的研究