small signal device 中文意思是什麼
small signal device
解釋
小信號器件-
The important part in photoelectric transform circuits is design of driving circuits and signal processing circuits about linear ccd. the time order driving circuit of ccd are designed and debugged with cpld ( complicated programmable logic device ), which make the whole driving circuit ' s volume very small, shorten design period, modify design at any time, and enhance reliability and agility of circuit
在設計過程中，採用了一種復雜可編程邏輯器件（ cpld ）設計線陣ccd驅動脈沖電路的新方法，只對器件進行重新編程，在不改變任何硬體的情況下，就可以實現驅動器的更新換代，非常適合線陣ccd脈沖產生電路的設計研究，具有高集成度、高可靠性、開發時間短、投資少等優點。 -
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 -
It ’ s already becomes one of the important developing direction to set up auto test system by programmable device with gpib and change the characteristics of traditional device that manual and used in signal device, and also do good to exertion of device function. but most programmable device produced in our country didn ’ t deploy gpib interface panel, which is an disadvantageous factor to make up auto test system. the gpib interface panel designed in this paper can be transplant easily and it ’ s software control completely accord with ieee488. 2 interface criterion, just small program
本文系統剖析了ieee488規范，並在此基礎上深入地研究了基於ieee488規范的自動測試系統的組建過程，自動測試系統的測試軟體開發流程，並結合具體實例編制出基於ieee488規范的自動測試系統的通用控製程序，該程序可以靈活方便地應用到各種程式控制儀器組成的自動測試系統當中，從而使組建自動測試系統更加便捷，提高了測量工作的速度和效率。 -
Multi - channels controllable phase signal generator adopts dds technology. its digital structure makes the device small and automatic
多路相位可控信號源採用dds技術，其數字化結構十分有利於系統的小型化和自動化。
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