采測儀器 的英文怎麼說
中文拼音 [cǎicèyíqì]
采測儀器
英文
detecting instrument-
Compared with primary second sampling a / d converter, it realizes digital feedback by digital circuit and does n ' t adopt high accuracy d / a converter with complex technology and high price. it has many excellent qualities, such as high - integration, high - accuracy, widely used, low - price. it can be widely used in test and measure system, scientific instrument, iatric instrument, automatic test system etc. so popularizing this new type a / d converter has very significant meaning
與原有的兩次采樣a / d轉換器相比,用數字電路實現數字反饋可不用技術復雜、價格昂貴的高準確度d / a轉換器,具有集成度高、準確度高、適用性強、價格低等優點,可廣泛應用於測量測試系統、科學儀器、醫療儀器、稱重儀器、自動測試系統等。In this paper, the operation theory is ntroduced. we research the quasi. synchronous alternative sampling echnology in detail to improve the precision of the instrument and discuss some problem about the plication of this method. we introduce the develop of hardware and software in the whole instrument. at last, we sive out the result of experiment and the analyses of error
文中論述了該電參數測量儀的工作原理,著重研究了提高測量精度的準同步采樣演算法,並討論了該演算法在單片機中應用的幾個實際問題。在此基礎上,詳細介紹了整個儀器的軟硬體開發過程。最後對儀器進行了實驗和誤差分析,給出了實驗結果和誤差分析結果。This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions
首先對加速度計及其測試技術的發展歷史和現狀,液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹,然後確定了以二元調寬脈沖再平衡測試迴路為設計方案,並從控制理論的角度進行了分析,著重研究了系統中各部分的傳遞函數,利用系統開環傳遞函數分析了系統的穩定性,同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題,並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路,驗證了電路的正確性,最後按照測試系統的要求,採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具,利用該圖形化編程語言完成了測試系統軟體部分的設計,實現了測試功能。The integrated response function of nuclear logs depends not only on the response function of the instrument, but also on the logging velocity, sampling rate and recording instruments
核測井曲線的綜合響應函數不僅取決于儀器的響應函數,而且受測量速度、采樣率,地面儀器記錄方式等因素的影響。Supported by heilongjiang province natural science foundation projects " research on the errors mechanism of time division a. c. power measurement " ( no. e9719 ), " research on theory of analog digital mixed sampling power energy measurement " ( no. e01 - 15 ) and foundation for university key teacher by the ministry of education " the research on the low audio frequency a. c. power measurement smart instrument " ( no. 1087 ), in this dissertation it is made that a systematic and deep study on power measurement model errors and instrument errors about analog sampling, digital sampling and mixed sampling measurement, and fully experiments about mixed sampling measurement
本學位論文在黑龍江省自然科學基金資助項目「時分割交流功率測量原理誤差產生機理的理論研究」 (編號: e9719 ) , 「模擬數字混合採樣功率與電能測量的理論研究」 (編號: e01 - 15 )和教育部高等學校骨幹教師資助計劃項目「中頻電功率測量智能儀器的研製」 (編號: 1087 )的資助下,以電功率模擬采樣測量、數字采樣測量和混合採樣測量方法為對象,對電功率測量的原理誤差和儀器誤差進行了系統和深入的理論研究和有關的實驗研究。Later, we interviewed the person who developed the machine in order to obtain a more scientific view on these results and interpretations
后來,為了對這測試的結果和分析取得更多的科學論證,我們采訪了開發這儀器的人。In this dissertation, we studied the tcra1101plus total station position system, which introduced the principle and characters of the instrument ' s closed loop tracking system. also we explained the cause of prism ' s position error and brought forward mathematic model to correct, moreover, the good results has been drawn form the expenriments. the kinetic survey system have been realized, which the sampling rate attain more than 5hz and the position precision can be less than 2mm on condition that targeted - point moving slowly at the velocity below 2cm / s. having finished the survey system to examine whether the fine - tuning stewart platform in good status, we have finished mensurating the position reference of the fine - tuning stewart platform and the offset of the prism
在此基礎上研製了多臺儀器在線控制高頻采樣動態跟蹤測量系統,采樣率大於5hz ,在跟蹤小於2cm / s低速運動目標時,測量精度好於2mm ;完成對饋源二次精調系統的檢測,包括對二次精調平臺位置基準的標定和觀測棱鏡偏心差的測定;設計不同動態測量實驗,對全站儀動態跟蹤的誤差來源和特點進行了分析;從實驗角度,對全站儀的測量時滯及其穩定性進行了測試分析,給出了定量的結果;比較了全站儀和計算機的內部時間系統,發現兩者存在較大差異。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。The meter adopts digital synchronous sampling and micro technology to accurately measure true rms of transformer ' s primary voltage, current, power, power factor, true rms ( ac ) or average ( dc ) of secondary voltage and current, true rms of secondary voltage ripple
該系列儀器採用數字同步采樣及微機技術,能準確測量變壓器的初級電壓、電流、功率、功率因數的真有效值,次級電壓、電流的真有效值(交流)或平均值(直流) ,次級電壓紋波的真有效值。The light route used by measuring instrument determined its volume, according to the place between sampling area and lens, with the application background limits, the miniature atomized particles size measuring instrument takes scheme that the sampling area locate in front of the lens and the optic - electronic sensor at the back focal plane of the lens. the miniature atomized particle size measuring instrument employs
測量儀器採用的光路直接影響儀器的結構尺寸,接收透鏡和采樣區位置的關系具有不同的配置方案,由於霧粒粒徑測量儀應用背景的限制,所採用的光路配置方案是被測顆粒位於透鏡前方,光能接收器件位於透鏡后焦面上。Scalar network analyzer is a kind of intelligent instrument based on frequency sweep test technology that used to measure the amplitude - frequent cy characteristic of linear system. network analyzer adopt these new technology such as frequency synthesis, sampling technique, broad - band sweeping and computer - assisted testing
標量網路分析儀是一種基於掃頻測量技術,用於測量線性系統幅頻特性的智能化儀器。網路分析儀結合了頻率合成技術、采樣技術、寬帶掃頻技術、計算機輔助測量等新技術。The model error and instrument error of digital sampling measurement algorithms were investigated comprehensively
全面地研究了數字采樣計算式功率測量方法的誤差模型和儀器誤差。As a new bus standard in computer peripheral hardware, usb is adopted and widely used in virtual instruments for its ease of use, true plug and play, power supply from bus, high transmission speed, etc. the purpose of this project is to design and develop a virtual instrument that can test and display semiconductor transistor output characteristics curve, instead of tradition instrument which has being used in labs by now
而usb總線作為一種新興的計算機外設總線標準,由於易用、支持熱插拔、總線供電、傳輸速率高等特點,已經在虛擬儀器當中得到采納與普及。本文介紹了一種實現晶體管特性曲線測量的虛擬測試儀器的設計和製作方案,其可用來取代目前在實驗室中使用的老式的晶體管特性圖示儀。The system makes up of two parts : subordinate part is the measure instrument, it also is principal part ' s data collection equipment, it makes use of microcontroller ' s advantage, it intelligentizes the management and data collection circuit, it has liquid crystal display and 4x4 keyboard, it can work alone on the field, so it is very convenient and ensures the credibility of data sampling ; principal part is virtual instrument software on personal computer, the software can be installed in notebook pc and work with subordinate part on the field, it extends the subordinate part ' s function, the teachers also can use it as demo teaching
系統的設計借鑒了主從式虛擬儀器設計的思想,系統由主機和從機兩部分組成:從機部分即為光合、蒸騰速率測定儀,也是主機的數據採集器,它利用單片機功能全面的優勢,使調理電路和數據採集電路智能化,它配備lcd顯示器和4 4鍵盤,可以獨立野外測量,從而使虛擬儀器在保證數據采樣可靠的前提下,更加方便實用;主機就是pc機的虛擬儀器軟體,既可以安裝在筆記本電腦上,與從機組成便攜式儀器系統進行實地測量、處理數據,擴展從機功能,又可以作教學演示。Based on the requirement of function extension of logging calibration software system, two design thoughts are mentioned in the process of designing the architecture of logging calibration software, and the impacts of those two thoughts on system ' s function extension are also discussed ; the method of dynamically loading function module is also offered, proving the availability of the adopted design method used in the software architecture and effectively solving system ' s function requirement
針對測井儀器刻度軟體系統功能擴展性能的需求,提出了設計測井儀器刻度軟體系統結構時兩種不同的思想,探討了這兩種設計思想對系統功能擴展性能的影響;給出了設計思想具體實現時動態加載功能模塊的方法,證明了軟體開發中所采納的設計思想實現的可行性,有效地解決了系統功能的擴展需求。Be involved in test automation, equipment specification and acquistion
參與測試自動化,儀器的保養和采購。The main chip of the usb interface circuit is a cypress semiconductor ' s product, cy7c64613, which has intergrated usb sie ( serial interface engine ) and enhanced 8051. the oscilloscope module is realized according to the real time sampling principle. it has two signal chunnels and a dual 8 - bit dual a / d converter whose most sampling rate is 40msps, so two signal acquisition can occurs in the same time
隨后介紹虛擬儀器測試平臺中各硬體模塊設計實現: usb介面的主晶元是cypress公司的cy7c64613 ,此晶元集成了usbsie和8051核;示波器模塊根據實時取樣原理實現,採用雙8位a / d轉換器,提供兩條信號通道,可以同時採集雙路信號,最高的采樣率為40mhz ;信號源模塊採用直接數字合成( dds )原理實現,它所能產生的信號頻率為10hz 5mhz ,最小頻率解析度為9 . 537hz 。Modern cylinder pressure acquisition system is deeply affected by the advanced computer hardware technology. a / d card with the capabilities of high resolution, high sampling rate, non discrepancy and setting sampling rate at will is combined with a lot of excellent measuring equipment such as crank shaft angle encoder, charge amplifier, industrial control computer, etc. we use four type 6117a46 spark plug cylinder pressure sensors made by kistler corp.,
高速發展的計算機硬體技術深刻影響著現代氣缸壓力數據採集系統的發展,高解析度、高採集率、多通道、無相差和可以任意設定采樣頻率等特性的a / d板卡及一大批性能優越的相關測試儀器如轉角信號發生器、電荷放大器、工控計算機等。In addition, we analyzed characteristics of every instrument of the test system. as key problems, the control, communication and synchronization, such as relay arrays control and gpib communicatipn, of the virtual instrument system were discussed carefully in the dissertation. we also discussed some anti - jamming solutions of the system
詳細研究了基於虛擬儀器的測試系統中對多種程式控制設備的控制方法及系統中的同步方法(負載電源的模擬電壓控制方法、工業控制計算機與gpib設備的通信方法;模擬通道采樣的同步方法、測試程序中數據流的同步方法等) 。Based on the large disturbance equation and using the measured power angle as an observation argument in an identification algorithm, the electrical parameters and mechanical parameters are obtained. in this thesis, micro - computer testing systems for synchronous generator is analyzed. withmcs - 196 series single chip micro - controller of high price performance ratio, a high precision, intelligent instrument for automated testing has been developed
設計了同步發電機參數測試儀器,完成了利用發電機定子電壓電流的波形,辨識發電機參數的計算機軟體,該裝置運用鎖相環技術自動跟蹤和獲取電量頻率,進行交流采樣,利用傅立葉演算法求得電量基波的幅值、有效值,從而可獲得三相有功功率、三相無功功率以及功率因數。分享友人