超聲波通信 的英文怎麼說
中文拼音 [chāoshēngbōtōngxìn]
超聲波通信
英文
ultrasonic communication-
A digital automatic ultrasonic inspection system designation is introduced. this system was developed with pc computer and embedded dsp, combining computer software and hardware, ultrasonic nondestructive testing, digital signal processing, embedded rtos and visual instruments technology. it meet the requirements of automatic inspection such as high repetitively frequency and real time alertation
該方案以pc機和dsp系統為核心構成主從機系統框架，以基於虛擬儀器思想的pc機應用程序和基於dsp的嵌入式實時操作系統構成雙重軟體結構，把傳統的超聲波無損檢測技術和先進的虛擬儀器技術、數字信號處理技術、嵌入式實時操作系統、計算機介面通信技術相結合，從而滿足了自動化探傷中1k / s的重復頻率和實時報警的要求。According to the shortages of the traditional ultrasonic detectors in online inspection, such as low anti - interference capability and sensibility, through introducing the theory of ultrasonic detection system, a circuit module for signal collecting and amplifying of multi - functional ultrasonic detection system is designed
摘要針對傳統超聲波探傷儀在進行在線檢測時存在抗干擾能力差、靈敏度低等缺點，通過對超聲波檢測系統原理的介紹，設計了一種用於多功能超聲波檢測系統檢測信號的採集及放大電路模塊。In principle, ultrasonic sensors are suspended over a road, which keep emitting pulse signals periodically to nearby and feed back waves to decide existence of any obstacles, thus to detect the speed, height, length, different sizes ( heavy, medium and small ) of moving vehicles and accumulative flow as well as length of motorcade. optionally, it can be applied to multitude driving lanes simultaneously for traffic data. by integrating and analyzing these measured data, the necessary figures concerning traffic flow may be obtained, which are fundamental basis guiding road buildings
本課題設計的是一種懸掛式超聲波車流多信息檢測器，通過懸掛于路面上方的超聲波探頭向路面周期性地發射脈沖信號，利用地面回波來判斷遮擋物地存在，可用於檢測行駛中的機動車車速、車高、車長、大中小分型以及累計車流量、車隊長度等信息，並可用於多個車道車流信息的同時檢測，綜合這些測量參數可獲得車流量的必要數據，可為公路建設提供必要的基礎依據。The microwave delaylines using hts thin films have the advantages of small size and mass and low insertion lose. these characters are much better than the delaylines using surface acoustic wave, coaxial - line, magetostatic wave or conventional metal planar structures. these merits benefit a lot in largely reduction the mass and volume of communication systems
利用高溫超導（ htsc ）薄膜材料研製的微波延遲線具有體積小、重量輕、插損小等優點，這是利用聲表面波、同軸線、靜磁波或常規金屬平面結構設計的延遲線所無法比擬的。這些優點對于減輕通信系統的重量和縮小體積都是非常有利的。In the following chapters, a 16 - channel experimental phased array ultrasonic testing system is thoroughly explained, including digital beam forming, low noise programmable amplification of received ultrasound signal, multi - channel hi - speed hi - precision data acquisition, hi - speed real - time processing of multi - channel ultrasound signal, and hi - speed data transfer based on pci bus. in addition, the frame of software system is built
本文詳細闡述了作者所獨立研製的16通道相控陣超聲檢測實驗系統，包括數字化超聲發射/接收波束形成、超聲信號的低噪聲程式控制放大、多通道高速高精度數據採集、多通道超聲信號高速實時處理、基於pci總線的高速數據傳輸等全部電路模塊的結構及工作原理，並說明了所編寫的底層軟體系統的框架。Development of communications software for ultrasonic open - channel flowmeter monitor system
超聲波明渠流量計監控系統通信軟體的開發Development of communication software for lmc ultrasonic open - channel flowmeter monitor system
型超聲波明渠流量計監控系統通信軟體的開發The conclusions are as follows : the ultrasonic intensity is proportion to the laser intensity ; the ultrasonic induced by a laser line source has much more advantages than by a laser point source, such as stronger energy, higher snr, more directivity and shape ; the intensity of cfpi ' s output signal is linear with ultrasonic vibration velocity, and is effected by incidence angle and scattered angle ; snr will increase by reducing cfpi ' s bandwidth, reducing incidence angle, increasing cavity ' s length and reflectivity
在分析點光源激勵聲表面波機理的基礎上，求出了線光源激勵的超聲振動的位移表達式，發現線光源激勵的近場區表面波具有波形好，信噪比高，指向性好，幅度強等特點。通過理論推導，得出共焦fabry - perot干涉儀的輸出光強除了與樣品表面的振動速度成正比，並與入射角和散射角有關；適當減小cfpi的帶寬，增加腔長，增大鏡面反射率，或者減小檢測入射角都可以提高系統的信噪比。The first part is the general interface of the hardware, which drives, monitors the ultrasonic sensor, receives signals generated by the sensor, converts the analog signals into numerical formats and sends them to the computer through a communication line. the second part is concerned with designing and implementing the software to be used by the vi
第一部分是以單片機為核心的超聲波發射接收卡的設計，其作用是驅動超聲波探頭工作，接收材料中的缺陷超聲回波信號，將其轉換為計算機可以處理的數字信號，並通過通信總線發送給計算機。Under normal weather conditions, the panels display the weather forecast together with cloud movements, wind distribution, marine forecasts, local temperature, laundry drying information, uv radiation information, tide levels at the local harbor entrance, typhoon information and assorted local information. however, when emergency information such as tsunami or high tide information is input, the panels automatically switch to the alarm information screen under which the expected tsunami arrival time is displayed
通常氣象信息會依次進行天氣預報，雲的動向，風向風力，海上預報，各地氣溫，洗滌信息，紫外線信息，港口的潮位，臺風信息，各地區信息等，不過，在有緊急情況時，會加入警報信息，預報海嘯到達時間，通過超聲波裝置110db呼籲高地避難。The following technologies such as mcu 、 rf communication 、 ultrasonic distance measuring are integrated in the system which has the functions of real time measuring in the watch sites and real time display in the receiving facilities
該系統綜合應用了單片機技術、短距離無線通信技術、超聲波測距技術，具有監測點距離實時測量、遠端接收設備實時顯示等功能。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So it is essential to diminish the errors and enhance its anti - jamming ability. an innovative method of measuring pipeline thickness based on power spectral evaluation computing has been put forward. besides, experiments on the on - line measurement have yielded good results, proving the veracity and reliability of the measurement
介紹了為減小系統的測量誤差、提高系統抗干擾能力而進行的對超聲波回波信號的分析研究工作，創新地提出了一種基於對超聲脈沖多次反射回波功率譜估計的超聲測厚方法，並通過實驗證明了該方法用於在線檢測的準確性與可靠性。In the second part, the new method is compared with the old one in such aspects as system structure and signal processing methods. in the third part, the properties of dsss and lfm systems, especially the echo signal correlation processing of the systems are discussed. the last part are the respective analyses of water - pipe simulation experiment results and the trial results in zhong yuan oil field
本文首先介紹了超聲測距的基本原理，分析了通道的聲傳輸特性；接著將傳統液位測量方法和新型液位測量方法的系統構成和信號分析處理方法做比較；然後對系統的發射信號（直接序列擴頻信號和線性調頻信號）的特點進行了研究，並著重討論了回波信號的相關處理；最後對水管模擬實驗測量結果和油田實地測量結果分別進行了分析和討論。The authors use a ultrasonic transducer emit ultrasonic to simulated seabed tiny terrain, then analyze and calculate the relativity of amplitude according to the time, phase and amplitude etc included in echo signal and making using of the relativity of amplitude characteristics, at last gain the real - time altitude data of tiny terrain for deep - sea cobalt crusts mining in order to provide the parameter of best cutting depth for the intellectualized mining of excavating head
摘要通過超聲波換能器向模擬海底微地形發射超聲波，根據回波信號包含的時間、相位和幅度等信息，利用幅度特徵相關性進行分析和計算，得出深海鈷結殼開采所需要的實時微地形高程數據，為採掘頭智能化開采提供最佳切削深度參數。In this thesis, the basic theories of ultrasonic distance measuring and short distance communication are reviewed at first. and then the hardware and software design of the system ’ s every part is introduced in turn. at last, the debugging process and the results of different circumstances are provided
本文首先回顧了超聲波測距和短距無線通信的基本原理，然後依次介紹了系統各個部分的硬體設計和軟體設計，最後就系統的軟硬體調試和實地測試給出了不同情況下的實驗結果。Then, digital quadrature envelope detection is used to detect the envelope of ultrasound as it is most used in the corresponding signal process. at last, we transform the signal to the range which can be displayed by the logarithm transform
有效補償了超聲傳播過程中的吸收衰減;並將正交包絡檢波技術用於超聲信號的幅度檢測;最後通過對數壓縮得到了顯示需要的灰階信號。First, the author builds the improved architecture based on behaviors for the mobile robot moro - i, proposes a full strategy of obstacle avoidance for region filling, and defines random obstacle and general obstacle which will be dealt with differently, - moreover, the multi - sensor system is set up which includes five groups of ultrasonic sensors for detecting the environmental information and the artificial neural network is used to fuse the information from each sensor group to achieve a precision of obstacle identification ; finally, the hardware and software are designed for the realization of obstacle avoidance
本文作者建立了移動機器人改進型基於行為的體系結構，提出了較完善的全區域覆蓋移動機器人的避障理論和策略，定義了突發障礙和一般障礙，並給予不同的處理方式；同時重點構建了多傳感器系統，採用五組超聲波傳感器用於檢測環境信息；基於人工神經網路對每組獲取的信息進行分析和融合，從而較準確地完成了對障礙的識別；最後，通過軟硬體的設計，實現了特定的避障行為。Meanwhile, with the development of wdm / dwdm communication systems, more and more attention is paid on the edfas with broader bandwidth, good gain and noise feature, and gain clamping, etc. according to the tianjin natural science foundation project : intelligent fiber amplifiers and light sources, the tianjin natural science foundation project : ( c + l ) broadband fiber amplifier and the nankai - delta ( tianjin ) project : development of gain flattened erbium - doped fiber amplifiers, this dissertation is mainly focused on the study of novel gain - clamped edfa, light sources, multi - wavelength fiber laser and variable optical attenuator for gain - clamped usage, gain and noise improvement of edfa, and broadband edfa
Wdm / dwdm通信系統的發展又需要edfa具有更大的帶寬、優良的增益和噪聲特性和增益控制等功能。基於上面的情況，並結合天津市重點基金項目? ?智能光纖放大器光源的研究、天津市重點基金項目? ? （ c + l ）超寬帶摻雜光纖放大器和南開-達爾泰（天津）項目? ?開發增益平坦的摻鉺光纖放大器等課題，論文主要圍繞新型增益控制edfa 、增益控制用光源、多波長激光器及可調光衰減器、 edfa性能優化和超寬帶edfa等方面進行了理論和實驗研究。In this thesis, an ultrasonic anti - collision system can be used in garage or when airplanes moving on ground is introduced, which is based on radio frequency ( rf ) technology. the system also has short distance wireless communication function
本文提出了一種基於射頻（ rf ）技術、具有短距離無線通信功能、應用於機庫內或飛機作地面移動時的超聲波防撞系統。分享友人