被測信號 的英文怎麼說

中文拼音 [bèicèxìnháo]
被測信號 英文
measured signal
  • 被 : Ⅰ名詞1 （被子） quilt 2 （姓氏） a surname Ⅱ動詞[書面語]1 （復蓋） cover; spread 2 （遭受） suffe...
  • 測 : 動詞1. （測量） survey; fathom; measure 2. （測度; 推測） conjecture; infer
  • 號 : 號Ⅰ名1 （名稱） name 2 （別號; 字） assumed name; alternative name3 （商店） business house 4 （...
  1. The input signals pass through the prepositive circuit which transforming the measured signals ( voltage or current ) into small voltage signals, the signal adjust circuit consist of programmable - gain amplifier and filter, and digital signal processor tms320lf2407 for data acquisition and processing in turns. provide the measuring results on lcd module. and also can transfer data to the pc ’ s rs232 for farther analyse

    採用前置電路將被測信號（電壓或電流）變換為小電壓信號，經過信號調理電路對信號進行程式控制放大和濾波后，通過tms320lf2407實現信號的數據採集、信息處理和計算，將測量結果通過液晶模塊顯示，還可經過rs232介面與計算機進行數據傳輸，做進一步的分析和應用。
  2. Eddy - current sensor conversion circuit consist amplification circuit, band - pass filter circuit, demodulation circuit, differentiation phase and data sampling circuit. these circuits are used to convert the test signal of eddy - current sensor to discrete signal tend to process. the microprocessor system that formed of dsp chip is used to data fitting of test system, data displaying and data communicating with personal computer, etc. the interference questions of hardware design and the measure of eliminating interference signal in the subject are introduced in the last of this chapter

    硬體電路的設計主要分三大部分來實現：激勵源電路部分，由分頻電路和頻率合成電路組成，產生頻率穩定的激勵信號以確保檢測任務的正常進行；傳感器變換電路部分，由放大電路、濾波電路、檢波電路、鑒相電路和數據採集電路組成，主要將電渦流傳感器檢測線圈檢測到的信號變換成只含有被測信息的離散信號，易於后續電路處理；由dsp晶元構成的微處理系統，主要完成檢測系統的數據擬合、顯示及與主機通信等功能。
  3. It can automatically match rotational speed generator, electromagnetic rotational speed sensor and electromagnetic turbine flowmeter. moreover it can adapted measured signal that is 1v ~ 300v voltage and 1hz ~ 2500hz frequency

    能自動匹配測速發電機、電磁式測速傳感器和電磁渦輪流量計，適應電壓峰峰值從1伏以下至300多伏、頻率從1hz以下至2500hz以上的被測信號。
  4. The basic signals in the projectile test are dynamic signals such as high initial speed, high chamber pressure, high frequency response, high impact, high temperature measurand. so, the test and measurement system should have more channels, the signals are easy to be obtained, and no matter the measurand it is, the test and measurement plateau should be integrated instantly

    彈丸測試的基本信號是高初速、高膛壓、高頻響、高過載、高沖擊、高溫等諸多動態量的信號，這要求測試系統通道多、捕捉動態信號容易、搭建針對不同被測信號的測試平臺快捷。
  5. The hardware of system is used sensor and signal conditioning circuit to collect the signal and communication with the computer using the pci2013. for the undulation of temperature and driven current will influence the testing result, they need to be invariableness during testing

    系統硬體以傳感器和相應的信號調理電路作為前向通道拾取被測信號，利用基於pci高速總線的pci2013數據採集卡和串口模塊實現與計算機的數據傳輸和命令通訊。
  6. The hardware circuit design include : industrial control computer configuration, selection of industrial control board type, design of the power supply and monitoring interface circuit, design of signal processing interface circuit ( the constant current source circuit, the time base signal processing circuit, the processing circuit for the signal to be measured ), design of panel control circuit, design of the system self - checking circuit, and etc. the program flow hart include : main program flow chart, system boot - strap self - checking program flow chart, manual static testing program flow chart, semiautomatic static testing program flow chart, automatic static testing program flow chart, dynamic testing program flow chart, transient testing program flow chart, source voltage and current monitor program flow chart, investigate function testing program flow chart, and etc. the measure system offers six working power supplies, the signal of time base, the signal of constant current source, sine wave signal and step to leap signal, and measures the frequency of the output pulse signal of the wide range pulse convert circuit accurately under three kinds of different test state ( static form, dynamic form and transient form )

    硬體電路設計包括：工控機配置、工控板卡選型、產品電源及監控介面電路設計、信號處理介面電路（恆流源電路、時基信號處理電路、被測信號處理電路）設計、面板控制電路設計、系統自檢電路設計等。程序流程圖包括：主程序流程圖、系統開機自檢程序流程圖、手動靜態測試程序流程圖、半自動靜態測試程序流程圖、自動靜態測試程序流程圖、動態測試程序流程圖、暫態測試程序流程圖、電源電壓和電流監控程序流程圖、研究功能測試程序流程圖等。測試系統提供六路工作電源、時基信號、恆流源信號、正弦波信號和階躍信號，並對三種不同測試狀態（靜態、動態、暫態）下大量程脈沖變換電路輸出脈沖信號的頻率進行精確測量。
  7. Radar stealth is a kind of technology which can escape signals from radars and avoid being found, recognized and tracked or reduce the probability being detected

    雷達隱身是通過降低飛機的雷達可探測信號特徵，使其難以被敵方雷達發現、識別、跟蹤或降低被敵方發現概率的技術。
  8. This inverse filter can consider the efficacious bandwidth of signal tested and the character of measurement system synchronously so we can acquire the estimating value of signal tested and the error is little

    這種反濾波器兼顧被測信號的有效帶寬和測試系統的特性，能夠得到被測信號誤差很小的估計值。
  9. Independent component analysis ( ica ) is a new multi - dimensional signal processing technology developed from blind source separation of late years. some scholars have brought forward a new polarimetric speckle reduction method by using independent component analysis which based on the multi - polarimetric trait of polarimetric sar and the independence between speckle and texture of sar imagery. while the algorithm thinks that there is only one real scene in polarimetric sar source images, so they get only one recovering image in the procedure of image separation and lose polarimetric property

    獨立分量分析是近年來由盲源分離技術發展來的一種新的多維數字信號處理技術，通過計算數據的高階統計信息，可以僅從觀測信號中估計出互不相關且盡可能相互統計獨立的被未知因素混合的原始信號的估計信號，從而幫助實現信號的增強和分析。
  10. Advanced fpga technology is introduced to improve the integration of digital circuits, and all digital circuits in the original module are integrated in the fpga chips, which could not only reduce the cost, but also improve the reliability and measurement precision of the circuits. high speed digital signal processor ( dsp ) is selected as the coprocessor instead of scm ; it can receive all kinds of commands sent from vxi, analyze and execute the commands, harmonize each section of the module and process the data. higher - conversion - speed comparator chip is adopted to convert the input signals being measured into square waveform signals which could be identified by fpga chip ; it can expand the measurement range of frequency dramatically

    本文在原有vxi總線四通道計數器模塊的設計基礎上，通過對原模塊缺陷的分析，採用一些新的技術和新的電子器件來重新設計該計數器模塊:採用最新的fpga技術來提高數字電路的集成度，將原模塊中的所有數字電路全部集成在fpga晶元中，這樣不僅能節約成本，還能提高電路的可靠性和測量精度;採用高速的數字信號處理器（ dsp ）取代原有的單片機作為協處理器，來接收vxi發來的各種命令，分析命令、執行命令、協調模塊各部分的工作以及對數據的處理;採用轉換速率更高的比較器晶元將輸入的被測信號轉換為fpga晶元能夠識別的方波信號，能極大提高測量頻率的范圍;採用d / a轉換晶元和隔離運算放大器得到隔離通道所需的比較電平，該比較電平值能夠根據實際需求進行設置，能增強模塊的使用靈活性。
  11. The project is to develop the 100mhz wideband digital storage oscilloscope ( wdso ) ， typical performance character : input signal - 3db bandwidth is 100mhz, real time sampling frequency is 20msa / s, equivalent sampling frequency is 10gsa / s, resolution is 8bits, dual signal channel, and delicacy is 5mv 5v div per channel ， time sweep velocity is 2. 5ns - - 5s div 。 so the project is provided with higher performance - to - price ratio, stronger competitive capacity in market and widest applied foreground at the area of wdso

    本次課題的具體目標是實現100mhz帶寬的數字存儲示波器正樣機的研製，具體主要性能指標達到最高實時采樣率20msa / s 、等效采樣率10gsa / s 、被觀測信號3db模擬帶寬達100mhz 、采樣數字解析度8bit ；雙通道，幅值靈敏度： 5mv 5v div ，掃速2 . 5ns - - 5s div 。該方案具有較高的性價比，較強的市場競爭力和廣闊的應用前景。
  12. The phase detecting error caused by local oscillator frequency drift and non - synchronization of measurement signal and gate signal is eliminated and the measurement speed is improved at the same time

    該方法可以有效的消除因本振信號頻率漂移及閘門信號與被測信號的非同步引起的測相誤差，同時提高了測量速度。
  13. Get the favor of city transportation manageing section. see from countrywide, as the development of city plan and city planning of the road construction, the number of newly - bulit traffic crossings increased constantly, the traditional transportation signal beacon in process of using now has been substituted by the led signal beacon. it can be forecasted that the market for local road led transportation signal beacon should be several billions rmb

    從全國范圍內看，城市化進程和道路市政建設的發展，新建交通路口數量不斷增加，目前使用的傳統交通信號燈也在被led信號燈替換。預測國內道路交通led交通信號燈市場應該在幾十億元。
  14. However, many influence factors especially the temperature have influence on the output signal of infrared moisture meter which belongs to the weak signal, and the existing infrared moisture meter have some defects such as just carrying simple filter and temperature compensation on it, so the measurement precision, the capability of adapting the environment and anti - noise are still not satisfying, as well as its performance and maintenance

    但由於被測信號十分微弱，測量過程干擾因素較多，尤其是溫度，而現有的紅外水分儀在信號處理方面往往只是進行簡單的濾波與溫度補償，致使儀器在測量精度、適應環境、抗干擾性能、調試與維護等方面還不盡人意。
  15. After reducing the noise by the technique of signal enhancement, the more extract approximation results than traditional approach can be achieved with the tls method

    在採用信號增強技術降低觀測噪聲后，利用總體最小二乘方法估計被測信號參數可以得到比傳統方法更好的分析結果。
  16. The 54600 - series scopes are the only deep - memory scopes that respond instantly to your control inputs with a fast, responsive display

    54600系列示波器是能對多路被測信號提供快速即時顯示的唯一一
  17. 2. with the mathematical model, the simulation on o 3. 5 x 8. 75mm pillar copper cylinders for varying the pulse width of the signal has been done

    2應用所建模型，對3 . 5 8 . 75mm柱形銅柱進行了被測信號脈寬變化的模擬計算。
  18. According to the characteristics of the signal under testing, the user can configure the sampling rate and range. besides, different a / d channels can work under different sampling rates and ranges

    用戶可根據被測信號特徵，通過程序設置采樣頻率、量程，可實現各a / d通道在不同采樣頻率和測量范圍下工作。
  19. The method is limited when the conventional dft - based techniques are used in sinusoid detecting in the presence of strong signal and weak signal in noise

    摘要就被測信號的強弱差異對使用常規dft譜峰搜索的信號檢測影響，基於非監督的遞歸演算法，通過選擇適當的門限參數，提出了一種適合於強弱信號並存的多信號檢測方法。
  20. Several performance parameters of the signal under test can be provided in time - domain and the measurement results report can be shown in the forms of plots and tables. the software system is provided with friendly interface

    該平臺可完成對被測信號的時域各項技術指標的測定，並以圖形或數據表的形式提供相應的測試結果報告，系統具有友好的人機交互界面。
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