進站信號機 的英文怎麼說
中文拼音 [jìnzhànxìnháojī]
進站信號機
英文
home signal-
Based on the demand of power department, a full distributed multifuncitional monitoring device is studied. this instrument not only can measure the data of hydroelectric plant, but also integrate the funcition of control the dynamotor, by cooperate with the program of epigynous system, it can realization the auto generate electricity on the hydroelectric plant and ordinal startup - stop of the dynamotor. 2 furthermore, performance of integrated dft arithmetic enhances the acturacy and reliability of measure. by communication several devices can run online to be controlled dispersedly and managed centrally
本文分析了國內外水電站自動控制裝置的研究和發展狀況，尤其是國內小型水電站的自動化現狀，針對現有電力部門的需求，設計並實現了一種單元式的微機自動監控裝置，該裝置不僅實現了對水電站內各種模擬參數和數字信號的實時監測功能，還對水輪發電機組進行了調控，通過與上位機處理程序的配合，可以實現水電站的自動發電控制、機組順序啟停；在測量發電機組機端電壓和電流參數的時候，採用32點離散傅立葉演算法（ dft ） ，增加了測量的準確性和可靠性；通過通訊可以實現裝置的聯網運行，做到「分散控制、集中管理」 。In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source
摘要基於李家峽水電站雙排機組振動的現場試驗研究，並且針對傳統頻譜分析方法傅立葉變換（ fft ）對于非平穩信號已力不從心這一缺陷，利用小波分析方法在時域和頻域上同時具有良好的局部化性質，通過對開停機這一典型非平穩過程信號進行小波及小波包分析，將其分解到不同頻帶內，獲取微弱信息和提取優勢頻率，並對其作振源分析，得出開停機初始時刻因水流不穩均出現強烈的振動現象，且低頻段信號能量最大，開停機過程水流脈動壓力和尾水渦帶擺動是引起定子基礎振動的主要原因。This paper studies the characteristic of scatter from moving target in the situation of bistatic sar with stationary transmitter. the wvd method is used in the paper to estimate the doppler frequency parameter of the moving targets ; the wvd - radon method is used to restrain the cross - term. then we can use the result to adjust the parameter of the filter, and to achieve the moving targets imaging of bistatic sar
本文分析了發射機固定的雙站sar情況下的運動目標回波信號模型，應用wvd變換對發射機固定的雙站sar回波的多普勒信號參數進行估計，並採用wvd - radon變換來抑制wvd的交叉項，以調整濾波器參數，實現發射機固定的雙站sar對運動目標聚焦成像。The content of the electricity transforming of the system with profibus includes the designing of signal detecting and dealing system, the developing of the major cache unit machine control, the integration of the system diagnosis and data information, and the subordinate station diagnosis function
基於profibus現場總線技術的濾棒儲存輸送系統電氣改造設計內容，主要從系統信號檢測與處理方式的改進設計、主體緩沖單元電機控制方式的改進設計、系統診斷及生產過程數據信息的集成設計和系統從站診斷功能設計等幾個方面講解。In order to receive the data correctly and store it in computer for analysis and process, a kind of space tracking data recording system based on pci bus is designed and realized in this dissertation, which enhance the space tracking system ’ s integrality
本課題正是在這種應用背景下，通過設計基於pci總線的數據錄取系統，對航天測控系統地面站綜合基帶設備數字接收機所接收的中頻采樣信號和解調后的數據進行接收和存儲，將其送到監控計算機中進行調制方案驗證和數據分析，從而進一步完善了航天測控系統的設計。While the fire alarm system detects an alert, the system will force the access control system to open all connected gates for evacuation. the system includes the local station and the administration station, which the administration station can control one or more local station
如果消防系統檢測到報警信號，自動將門禁系統打開，確保機房的安全，在南方日報機房的本地站同時安裝南方都市報的遠程端，對南方日報社和南方都市報的機房內的所有設備進行全面的監控管理。The high speed data flow transmitted from the satellites is received by the satellite communication earth station and then sent to the data terminal center, the speed of which is up to hundreds of megabytes baud rate
從衛星上高速下傳的數據由地面衛星接收站轉發為基帶信號送至數據中心，速度可達上百兆波特率，並要求系統能夠正確接收，存入計算機中進行后續數據的分析和處理。The new system uses short base - line to avoid the long base - line phase illegibility to get the signal arrive angle with higher precision, then use the phase differences without illegibility and the arriving angle to detected the emitter ' s range
該系統首先通過短基線測角，去除長基線接收機相位模糊，進而獲得更高精度的波達角度；然後通過無模糊的相位差側量值和波達角度估計值確定信號源與觀測站之間的距離。The dissertation tries to eliminate these affection in details : far - near field problem can be relieved by changing the pesudolite ' s signal format and increasing the dynamic range of receivers ; dual - satellite ' s dual directions timing technology and atomic tinier are contributions to enhance synchronization, the constraints of the layout and location of pesudolite stations, such as gdop, proof - interfere etc., are also focused in
從偽衛星信號格式和接收機動態范圍出發改進了遠近場問題的影響。研究了偽衛星與衛星精確時間同步。通過對gdop 、衛星間及與用戶接收機的共視性、抗干擾性等幾個約束條件的分析，對偽衛星基站進行了合理選址和優化布局。Computer based interlocking is a transport equipment which use the computer to control the point, circuit and lighter, is a tools which used in the station transport by the watcher, is also a fail - safe equipment which can turn over to the safe condition when something is wrong
計算機聯鎖是一種將車站道岔、軌道電路和信號機，用計算機進行集中有效控制和管理的重要行車設備，是車站值班員賴于組織行車必不可少的工具，同時也是一種在設備發生故障或人為錯誤操作時能夠將故障導向安全的保安設備。The radio frequency receiver supports interface for instrument and base station and air interface for mobile station, and it takes the task of magnifying low noise and down - convert and digital baseband processor filtering and magnifying intermediate frequency to reverse link signal. the digital baseband processor samples the received signal after down - convert radio frequency signal to intermediate frequency signal and processes other processing and supports interfaces to computer, next sends data to computer. the gps receiver supports interface for instrument and gps system, and receives gps system signal, next it demodulates the correlative information and sends out benchmark clock signal we need
射頻接收部分主要為儀器和基站、移動臺提供空中介面，其主要任務是在反向鏈路上對接收到的射頻調制信號進行低噪聲放大、射頻下變頻變換、中頻濾波放大等;數字基帶部分為對接收信號變頻為中頻后進行a / d采樣，以及其他的rsp處理並和計算機提供介面，將數據送至計算機進行后臺處理、顯示等; gps接收機部分為儀器和gps系統提供介面，接收gps系統信號並解調相關信息，輸出所需的電文及時鐘基準信息等。This thesis introduces the design mode of the system, acoustic signal detection and estimation methods, how to position and solve, etc. others discussed in the thesis include software and hardware realization of buoy electrical platform and base station synthesizer, and module design of controlling application
文中介紹了整個系統的設計模式，聲信號檢測與估計的手段，定位解算的方式，並且對浮標電子平臺、基站綜合處理機的軟、硬體實現及主控軟體的模塊化設計也進行了論述。分享友人