次聲傳聲器 的英文怎麼說
中文拼音 [cìshēngzhuànshēngqì]
次聲傳聲器
英文
infrasonic microphone-
The program includes the infrasonic signal data acquisition of three channels, 3 - d dynamic spectrum analysis, correlation analysis of 3 channel infrasonic signals, the calculation of wave direction, the wave speed, the spectrum analysis at any length and a real - time infrasonic gravity wave pressure - time ( p - t ) curve
本程序支持3路次聲波傳感器信號的數據採集、動態譜分析及次聲信號的相關分析、能計算波源的方位角、波速以及任意時間段的譜分析，並實時給出次聲重力波的壓力?時間曲線（即p ? t曲線） 。Hi this thesis, the technique of detector array is used to obtain the location of anomalous infrasound, it is the basic of the study of prediction of earthquake. to derive useful information by using spectrum analysis on infrasonic signal. then combing with other methods a forecast could be made
本課題主要是利用數字技術，採用用傳感器陣列計算異常次聲波波源的方位，這是今後預測震中位置研究的前提；並對次聲信號進行頻譜分析，提取有用的關于臨震次聲方面的信息，再結合其他的預報方法，作出準確的地震預報。The main results of this work are summarized as follows : 1. for the first time, biomimetic bulk acoustic wave ( baw ) sensors based on the molecularly imprinted polymers ( mips ) were fabricated and applied to the determination of phenobarbital and pyrimethamine in organic and aqueous solution, respectively
採用非共價印跡技術以-甲基丙烯酸為功能性單體、乙二醇二甲基丙烯酸酯為交聯劑首次制備了液相分子印跡體聲波仿生傳感器，並分別在有機相和水相中測定了藥物苯巴比妥和乙胺嘧啶。In this paper, the main research works are as follows : 1 ) survey and analysis previous work in auv navigation and summarize : as the cumulate error, the dead - reckoning and inertial navigation systems ca n ' t be used without other modified system ; the acoustic navigation system is used only in small range, and is very expensive. 2 ) two important approaches in geophysical navigation techniques are summarized, one is terrain contour based navigation, this approach is investigated keystone today ; the other is image based navigation, due to no perfect image sensors and image seabed map, this approach has seldom been practised. 3 ) two important terrain contour based navigation algorithms has been applied to auv, one is match algorithm - based terrain contour match ( tercom ) ; the other is kalman filter - based sandia inertia terrain - aided navigation ( sitan )
主要研究內容包括：一、總結分析了當前水下導航的常用方法和不足之處，指出基於航位推算的導航方法，存在著最大的問題就是導航誤差的積累問題，如果沒有修正系統，這種方法很難滿足使用要求；其次指出基於聲學的導航方法，造價昂貴，導航范圍有限，難以滿足自主水下航行器大范圍導航的需求；二、總結了當前水下地形輔助導航的主要技術路線，一是基於地形高程的匹配方法，這是當前研究的重點；二是基於地形圖像的匹配方法，由於缺乏良好的圖像傳感器，和可用的海底圖像地圖，目前這種方法還有待研究發展；三、將兩種地形高程匹配的常用方法應用到自主水下航行器上：以相關演算法為前提的地形輪廓匹配（ tercom ）方法和以卡爾曼濾波為基礎的桑迪亞慣性地形輔助導航（ sitan ）方法，前者演算法簡單可靠，但是導航精度不高，後者雖然精度比較高，但存在著演算法較為復雜、有可能發散和出現奇異值等問題。Firstly, a system was developed in functions to collect infrasound data, to transform analog voltage signal from detector into discrete signal by a / d card and to process the data by using methods of digital signal process
首先設計一套數據採集系統，次聲波信號通過傳感器被轉換成模擬電壓信號，通過a d板將其轉換為離散的數字序列，輸入計算機。利用數字信號處理的原理和方法對異常次聲信號進行分析處理。The research works finished in this paper are listed below : 1. solving the problem in testing of cylinder vessels that the sensors disposition is very rigorous, carrying out study of freewill triangle network orientation and linear orientation, bringing forward the discriminance which distinguish the validity of orientation array using character string method the first time, at the same time, solving the problems that judgement of orientation array, elimination of camouflage location, avoidance of repeat location, etc. 1 '. carry ing out the study of the orientation of defects in stand lank floor with the method of freewill planar triangle orientation, advancing bran - new discriminance on the validity of orientation arrays, orientation points, and the disposing means of the acoustic sources near sensors and those near common border
本文進行的主要研究工作有： 1解決柱式容器檢測中傳感器排布要求較嚴格的問題，開展任意三角形網路排布檢測技術與線定位技術研究，首次提出了利用字元串格式判斷線定位陣列有效性的判別方法，並解決了任意三角形定位中存在的定位陣列判斷，偽定位的剔除，重復定位的避免等一系列問題； 2利用平面任意三角形定位方法開展常壓立式儲罐罐底缺陷定位技術研究，提出了全新的定位陣列有效性判斷、定位點的有效性判斷方法；以及頂點聲源和邊界聲源的處理辦法。The correlated double sampling ( cds ) circuits structure is used to reduce the fixed pattern noise ( fpn ) of the cmos sensors, and improve the signal - noise ratio ( snr ). the 256 photodiodes arrayed 4 quadrants sensor consists 16x16 active photodiodes array. correlated double sampling processing circuits, output buffer amplifiers and digital control part
針對cmos製造工藝中mos器件固定模式噪聲（ fixedpatternnoise ， fpn ）較大的不足，研究中採用了相關二次采樣（ correlateddoublesampling ， cds ）電路降低固定模式噪聲，從而提高了傳感器的信噪比（ signalnoiseratio ， snr ） 。Based on the results of the theory analysis and computer simulation of suspended stripline low pass filter, band pass filter, the transition from waveguide to finline and the transition from waveguide to suspended stripline, the structure design and manufacture were made. the measured results match the requirement. different from the traditional mixers used in the domestic communications satellites, the sub - harmonic balance mixer type was used in the ka - band mixer design
在ka頻段混頻器的研究過程中，通過對衛星和飛船所用到的混頻器進行研究，在對ka波段的傳統射頻前端電路的分析基礎上，提出改變以往星上傳統的基波混頻方案，採取了次諧波混頻方案，降低了本振頻率，簡化了本振鏈路，使噪聲特性、可靠性獲得改善。2. the preparation of biomimetic bulk acoustic wave sensors for phenylalanine, atropine and pesticide 2, 4 - dichlorophenoxyacetic acid based on the electrosynthesized molecularly imprinted polymers using o - aminophenol, o - phenylenediamine as monomers is first proposed
用電化學方法以鄰苯二胺、鄰胺基酚為單體，首次現場制備了苯丙氨酸、阿托品、殺蟲劑2 ， 4 -二氯苯氧基乙酸的分子印跡體聲波傳感器。Finally, some important conclusions were drawn, that is, using distributed pzt transducers, ultrasonic guided waves are generated and received in a pipe. usually, there are many different modes of guided wave propagating in the pipe and these modes are generally dispersive, the specific exciting signal of a harming windowed toneburst with a central frequency of 70khz for decreasing the effect of dispersion was selected. and guided wave are generated using 16 distributed pzt transducers in a circumferential direction for suppressing flexural modes
首先，對當前本課題研究領域的進展作出綜述，並簡要介紹與超聲導波技術相關的理論基礎；其次，建立了一套有效的實驗裝置，在此實驗裝置基礎上，重點研究了採用分散式pzt傳感器在管中激勵和接收特定模態超聲導波的方法：根據在管狀波導中傳播的超聲波具有頻散現象及多模態特徵，選擇具有單一頻率的特定信號激勵超聲導波，使其頻散最小；同時採用分散式傳感器抑制不同模態的波型。Once again, rival technology for manned aircraft stole the thunder : stealthy designs to reduce the radar signature, precision weapons such as cruise missiles and laser - guided munitions and new sensors such as synthetic - aperture radar that could look through clouds
對手的人工駕駛飛機的科技再一次先聲奪人：為減少雷達信號而進行的秘密設計、諸如巡航導彈與激光導向的軍需品之類的精密性武器，以及一些新型傳感器，諸如可透視雲層的合成光圈的雷達。Standard practice for secondary calibration of acoustic emission sensors
聲發射傳感器的二次校準標準規程Taking structural intensity as cost function, we study the active control of infinite beam and non - homogeneous beam and present the result of active control under the condition of different location of error sensors and different distance between control force and primary force in the beam
以結構聲強為目標函數，對無限長梁和非齊次邊界梁進行主動控制研究，給出了不同的誤差傳感器位置、不同的初級力和控制力之間的位置關系對主動控制效果的影響。Y type and s type dual - path saw mass sensors have been tested and analysed in detail. their frequency domain characteristics and time domain characteristics have been tested under non - oscillatory mode. transmission characteristics of y type s type and " - " type saw mass sensors are derived by p matrix representation. primary delay signal triple reflection signal and quintuple reflection signal of these sensor devices have been analysed in detail
結果表明，在正常工作模式下， y型和s型雙聲路聲表醚質量傳感器件的三次渡越反射信號和五次渡越反射信號比「一」字型雙聲路聲表醚質量傳感器件的三次渡越反射信號和五次渡越反射信號分別小12db 、 16 . 67db和n _ . sdb ? 17 . 3db 。Secondly, experiments were made to analyze the effect of the wheel damper, we used the system composed of a self - made pendulum, three acceleration sensors, a four - channel charge amplifier, a sound level meter, a signal collection analyzer and the dasp software
其次，對車輪阻尼器的降噪效果進行實驗分析。實驗採用激振單擺、加速度傳感器、電荷放大器、聲級計、智能信號採集處理分析儀以及dasp軟體組成的測試系統。Standard method for primary calibration of acoustic emission sensors
聲發射傳感器的一次校準And we mainly finished breath detection electronic nose system, including surface acoustic wave sensor design, film coating design, and hardware & software design for future detection marker vocs in lung cancer breath by electronic nose
其次介紹了電子鼻應用於呼吸檢測的可行性，塗膜的原理，並通過詳細介紹傳感器設計、電路設計、軟體設計、傳感器塗膜和系統設計等方面說明了我們所建立的毛細管色譜柱與聲表面波傳感器聯用電子鼻系統。As the recommendation itself declares, " by splitting traditional xhtml forms into three parts - xforms model, instance data, and user interface - it separates presentation from content, allows reuse, gives strong typing - reducing the number of round - trips to the server, as well as offering device independence and a reduced need for scripting.
按照建議（ recommendation ）本身所聲稱的， 「通過將傳統的xhtml表單分成3個部分： xforms模型、實例數據和用戶界面。它將表示與內容分離，允許重用，並提供強類型（ strong typing ） ，這些減少了往返服務器的次數，提供了設備無關性，並降低了對于腳本編制的需要。 」分享友人