檢波元件 的英文怎麼說
中文拼音 [jiǎnbōyuánjiàn]
檢波元件
英文
detecting element-
Based on local coupling mode theory of graded index optic fiber wave guide, the variation regularity of coupling output light has been deduced when sound wave acts on single mode optic fiber coupler. and a new idea has been proposed that a novel sensor can be applied on detection of acoustic / vibration. the sensing element of sensor is the melting area of single mode coupler in which the feasibility of the new - type optic fiber sensor has been proved in experiment
本文從緩變光纖波導的局部耦合模理論出發，推導出了單模光纖耦合器耦合分光在聲波作用下的變化規律，提出了以單模光纖耦合器的熔融區為傳感元件的傳感器在聲振動信號檢測中應用的新思想，並實驗論證了這種新型光纖傳感器應用於實際的可行性。The main achievements are as follows : the theory models of defect mfl field are set up ; based on the magnetic dipole model and finite element model, the distribution of defect mfl field is simulated in the dissertation ; the component of flux density ( magnetic filed ) parallel to the surface of pipe is detected by a circumferential array of hall probes ; the factors including defect geometry parameters, defect surface angle and shape, pipe material, field intensity, vehicle velocity, background magnetization, operating pressure and remanent magnetization and so on influence the mfl signal characteristics
採用霍爾元件作為缺陷漏磁檢測傳感器，獲得管道軸截面漏磁場切向分量的漏磁信號；研究了缺陷外形尺寸、缺陷傾角和形狀、管道材質和磁化強度、檢測儀移動速度、管道背底磁場、管內壓力和剩磁對漏磁信號的影響。提出了各通道增益放大、各路漏磁信號偏離調整、波形微分、數字濾波和平滑等漏磁信號預處理方法；分析了等空間采樣的漏磁信號轉換為等時間采樣信號的必要性，研究了漏磁信號的小波去噪方法。Due to the advantages such as short response time, easy operation, and convenient to comprehend the wavefront modes, the hartmann wavefront sensor ( h - wfs ) is widely utilized nowadays in real - time adaptive optics system, turbulence statistical characterization, optical components test, light quality evaluation, laser atmosphere communication, the wavefront correction of ultrahigh power laser pulses, as well as human eye aberrations measurement. the detection accuracy is important to the performance of the whole optical system. considerable efforts have been performed in the investigation of h - wfs wavefront detection techniques in past years
哈特曼波前傳感器具有實時探測，易操作，可以直觀顯示波前畸變分佈等優點，被廣泛地用作自適應光學系統的波前信息探測和波前畸變補償，大氣湍流統計特性表徵，光學元件檢測，光束質量評價，超強激光脈沖波前整形，激光大氣通信以及人眼象差測量等各個領域之中，其探測精度的高低對整個光學系統的工作性能有著極其重要的影響。Travellers may be liable to prosecution if they bring intoout of hong kong, for the purpose of trade or business, any apparatus or any component part of any apparatus for transmission by radio waves without a valid licence or permit ( e. g. mobile telephone and radio transceiver )
旅客如為貿易或業務目的，把未領有有效牌照或許可證而以無線電波進行發送的器具或任何該等器具的任何元件（例如行動電話及無線電對講機）帶進帶離香港，可遭檢控。Firstly, we analyze the transient and steady character of single phase high - impedance grounding fault. secondly, based on wavelet analysis on checking mutational signal and direction high frequency protection theory, utilizing zero sequence current and module current, this paper provides a new scheme including fault starting element, fault phase selection element, directional element and main criterion. this scheme can bear high impedance and is immune to system surge and frequency warp, which gets over the shortcoming of the lack of sensitivity
由於現有的保護方案無法快速有效地切除此類故障，本文在詳細分析了單相高阻接地故障的穩態和暫態特性的基礎上，從小波分析原理出發，利用小波變換檢測突變信號的原理，以零序電流、模電流等為研究對象，結合方向高頻保護的原理，設計了一套包含啟動元件、選相元件、方向元件、主保護的保護新方案。It overcomes the disadvantages of traditional inductance sensor, and has advantages of small size. light in weight, better linearity, long life, higher frequency response property and simple driving and signal processing circuit, etc. 3. having considered the situation that the human - machine dialog equipments in some computer control systems are not of high quality, a new kind of reorganizing the sensor ~ s system by external human - machine dialog scheme is presented in this paper
提出一種新型電感式位移傳感元件，採用方波驅動模式和運放電路提取信號，克服了傳統電感式位移傳感元件的缺點，獲得體積小、重量輕、線性好、頻響高、驅動電路和信號檢出電路簡單等優點，並更易於和微機控制相適應。It is composed of thirteen functin ? components including two 3 - db y - junction power splitter, two directional couplers, two waveguide attenuators and one polarizer of waveguide itself. the prominent feature of the device is that it has a beat detection function with respect to the single y - branch mioc device, and it plays an important role in improving the inertial - grade and the high precision steady - aim system because of the beat detection function. farthermore it has direct influence on the improvement of the high flexibility, shockproof and overload - resistance for the steady - aim system
器件的工作波長為1 . 3 m ，集分束器、合束器、起偏器/檢偏器、相位調制器、波導吸收器等十三個功能單元於一體，除了單y多功能集成光路器件具備的功能外，它還具有拍頻檢測功能，因而對提高慣導級和高精度穩瞄系統起著重要的作用，並直接影響著穩瞄系統的高機動性、抗沖擊力和過載能力的提高。The technology on the processing and detection of the extreme - ultraviolet radiation and x - ray ( euv / x - ray ) optical component is one of the main categories in modern short - wave band optical research
極紫外與x射線（ euv x - ray ）光學元件的加工與檢測技術的研究是近代短波段光學研究的主要范疇之一。Fibre optic interconnecting devices and passive components - basic test and measurement procedures - part 3 - 5 : examinations and measurements - wavelength dependence of attenuation
纖維光學互連器件和無源元件.基本試驗和測量程序.第3 - 5部分:檢查和測量.波長衰減函數Fibre optic interconnecting devices and passive components - basic test and measurement procedures - part 3 - 7 : examinations and measurements - wavelength dependence of attenuation and return loss
纖維光學互連器件和無源元件.基本試驗和測量程序.第3 - 7部分:檢查和測量.波長衰減函數和回波損耗The main results of this paper are as fellows f 1 ) illtroducing the ultrasonic technology to the rigid measurement, successful1y exploits the practical small intellectualized ultrasonic device of measuring rigidity by applying mechanical technology, electronic technology and computer science 2 ) reading clearcf displaying more various, applying more information, being easiest to accept by user because of adopting liquid crystal display ( lcd ) 3 ) theorizing the mathematical model between the signal of frequency and the rigid value on the device, possessing very importan practical significance 4 ) optimizing the every parts of the device, achieving the goals of lower wastage of energy, smaller, lighter and inexpensive 5 ) taking the measure to reduce the wastage of energy and adopting reasonable management in power supply for the device, making the device skimp more energy, prolonging the life - span of battery 6 ) utilizing the interface of rs - 232, discussing the communication between the ultrasonic device of measuring rigidity and computef, and also forecasting the foreground of advanced exploitation by user
本文工作的主要成果是： 1 ）將超聲波技術引入零件表面硬度的檢測當中。應用機、電、計算機技術，研製成功較為實用的小型智能超聲波硬度檢測儀2 ）採用lcd （ liquidcrystaldisplay ）液晶顯示，使讀數更清晰、顯示多樣化、信息量多、易於為用戶接受3 ）在理論上建立了該系統的頻率信號與硬度值的數學模型，具有非常重要的實踐意義4 ）對各元器件進行優選，達到低能耗、體積小、重量輕、價格便宜等目的5 ）採取措施降低整個系統的能耗並對系統的供電進行了合理的管理，使其進一步達到低能耗，延長了電池的使用壽命。 6 ）利用rs - 232標準介面，討論了該超聲波智能硬度測量儀與系統機進行通訊以及用戶進行二次開發的前景Fibre optic interconnecting devices and passive components - basic test and measurement procedures - part 3 - 7 : examinations and measurements - wavelength dependance of attenuation and return loss
光纖互連設備和無源元件.基本試驗和測量程序.第3 - 7部分:檢查和測量.衰減和回程損耗的波長相關性In this thesis, the principle of polarized light wave transmit in optical fiber is researched, i. e. principle of ternary optical fiber communication is researched. based on the researches, the construction of ternary codes optical end machine and 3b2t optical end machine used in two - state fiber net are designed. the construction and component of circuits in 3b2t optical ( called sign converter circuit - scc ) are designed particularly, including : the clock synchronization module, the data synchronizing, code converting module, frame managing module and error exam and managing module
本文研究了線偏光波動理論以及在光纖中的傳輸原理，研究了三值光通信系統原理和器件原理；在此基礎上，設計了三值光端機和在現有兩值光纖網中實現三值光通信的3b2t三值光端機的組成結構，詳細設計了3b2t三值光端機的電路組成部分（稱為電信號變換電路scc ） ，包括：時鐘同步模塊、數據同步模塊、碼元變換模塊、幀處理模塊及差錯檢測和處理模塊；而且在三值光纖通信基礎上，提出了四值光通信的原理和偏分復用的實用化方法。In this paper, i establish a set of updating the basic land - use map technology and flow after i go deep into studying the methods of updating the basic land - use map based on 3s technology. it is very important point that i bring forward some methods of change information automatic detected founding on land - use map unit, cross correlation analysis with multispectral image and object - oriented classification aiming at difference data and difficult identifying change information problems. and then, i compile the programme and practise validating to examine technics flow
本文在深入研究了基於3s技術更新土地利用圖件的方法基礎上，從實用化的角度出發，建立了一套利用3s技術更新土地利用基礎圖件的技術流程與方法，並針對不同的數據情況和變化信息自動提取等問題提出了基於土地利用圖斑單元的知識庫變化信息自動發現方法、多波段遙感影像交叉相關分析變化識別方法及面向對象的遙感影像分類變化檢測方法。Ningbo longhua hydraulic pressure piece co., ltd. was established in 1988, specializes in making hydraulic pressure oil jar, high intension screw, now covering floor 23 are, workshop 15000 sq. m., has 300 employees, registered capital 2 million yuan and fixed assets 15 million yuan, sets of advanced numerical control equipments, according to national commodities inspection standard, the annual value amount to 30 million yuan, the products sell well all over the country
寧波市龍華液壓件有限公司，創建於1988年，為股份制企業，專業生產液壓油缸、高強度螺絲等，現有注冊資金200萬元，佔地23畝，廠房面積15000平方米，固定職工100餘人，博士一名，固定資產1500萬元，擁有數控加工機械，產品根據國家商檢標準，年產值3000萬元，產品暢銷國內市場。Moreover, we put forward many schemes to erase errors such as static error, dynamic error, or make them little. especially we dicuss how to deal with the phase - shifting cell ( pzt ) and interferogram. in the end we bring forward two methods to estimate the contour of piano : one is traditional parameter, the other is power spectral density ( psd )
提出從兩方面對面形進行評價，一是用傳統光學像質評價指標，二是利用psd從頻譜角度評價面形，從而為高精度檢測和控制大口徑光學元件表面面形（波前）提供了依據。Fibre optic interconnecting devices and passive components - basic test and measurement procedures - examinations and measurements - polarization dependence of return loss of a single - mode fibre optic component
光纖互聯裝置和無源部件.基本試驗和測量程序.檢驗和測量.由單模光纖元件回波損耗產生的偏振相依性Fibre optic interconnecting devices and passive components. basic test and measurement procedures. examinations and measurements. polarization dependence of return loss of a single - mode fibre optic component
光纖互聯裝置和無源元件.基本試驗和測量程序.第3部分第19節:檢驗和測量.由單模式光纖元件回波損耗產生的偏振Fibre optic interconnecting devices and passive components. basic test and measurement procedures. part 3 - 19 : examinations and measurements. polarization dependence of return loss of a single mode fibre optic component
光纖互連裝置和無源元件.基本試驗和測量程序.第3 - 19部分:檢驗和測量.單模光纖元件回波損耗的極化依賴Fibre optic interconnecting devices and passive components - basic test and measurement procedures - part 3 - 19 : examinations and measurements - polarization dependence of return loss of a single - mode fibre optic component
光纖互連設備和無源元件.基本試驗和測量程序.第3部分第19節:檢驗和測量.由單模式光纖元件回波損耗產生的偏振分享友人