This thesis elaborates a self - developed measuring equipment for pulse oximetry . this unit can output the standard oximetry test signal comparatively with difference sensors of the tested pulse oximetry , include pulse rate , peep and oxygen saturation 所述脉搏血氧仪校准装置,它能产生一个与被检脉搏血氧仪传感器类型相对应的标准血氧测试信号,包括脉率、脉冲幅度和血氧饱和度。
After careful analysis and reasoning , this article proves that crs in uast has favorable tactics performance , possesses favorable feasibility and practibility , and is one of the best choices for the radar system of uast 通过详细的分析和论证，证明坦克超近反导系统装备伪码调相连续波与单脉冲幅度比较复合体制雷达具有良好的战术性能，也具有良好的可行性和实用性，是坦克超近反导雷达系统的最佳选择之一。
The common detector output pulse signal scope is several dozens millivolts , but the multichannel pulse analyzer input pulse amplitude request is 1 - 15v , therefore the pulse linear amplifier must have the certain voltage gain , about ten times to several times 一般探测器输出脉冲信号幅度为几十毫伏,而多道脉冲幅度分析器输入脉冲幅度要求为1 - 10v ,所以脉冲线性放大器必须具有一定的电压放大增益,为数倍到上百倍。
Ultrasonic bio - instrumentation has several display modes used in medicinal field now , such as b - mode and m - mode , etc . b - mode uses the modulated brightness to represent the amplitudes of ultrasonic echoes , and the coordinates in the formed profiles correspond to positions of ultrasonic beam scans one by one B型显示是用亮度调制来显示回波脉冲幅度，显示的横轴和纵轴与声束扫描的位置一一对应，形成超声切面图像。
In this paper we discuss mca circuit , the sequential logic for mca data collection , for the setting of the uld , lld and the gain of pga , as well as the combinational logic for decoding circuits of the computer interface , based on cpld 本文详细论述了利用cpld实现的脉冲幅度多道电路及其数据采集的时序控制逻辑、阈值设定和程控放大倍数设定的时序控制逻四川大学硕士学位论文辑、以及与计算机接口的译码电路等组合控制逻辑。
( 2 ) dynamic range is increased through an amplifier with agc ( automatic gain control ) circuit . the output voltage of the detector is proportional to the received optical power . when the camera runs functionally , the optical power coupled into the detector may vary constantly due to the the mechanical vibration 利用自动增益控制或限幅放大电路,可以满足这一要求:输入功率较大时,脉冲幅度得到有效抑制,而在输入功率较小时,信号脉冲可以得到较大的增益。
The dissertation discusses about field multi - channel nuclear data collecting system based on mcu in detail . the data collecting system adopts mcu ( micro - control units ) at89c55 as controlling core , applying high speed and low power adcs ( analog - to - digital converters ) cmos chip max 191 and 320x240 matrix graphic lcd ( liquid crystal display ) 该系统在硬件上以单片机at89c55为控制核心，以高速低功耗的a d芯片max191作为多道脉冲幅度分析器的模数转换器件，以320 240点阵图形液晶显示屏作为系统的显示器，根据初步的性能测试，系统已经达到预期的设计目标。
As compared with multi - channel analyzer , platform of microcomputer consumes much more energy , , thereby , it will follow a rational line to be research and developing orientation of nuclear spectrum apparatus to choose new pattern platform of microcomputer of low power and develop tiny pattern and low power nuclear spectrum apparatus 对于基于台式机和笔记本平台的多道脉冲幅度分析器，微机平台功耗很大。因此选用新型低功耗微机平台，开发小型、低功耗的核能谱仪，成为今后核能谱仪的研究发展方向。
In the foreign country , neutron induced prompt gamma - ray analysis ? ipga was used to analyze the elements in substance and has been used in real production and industry " s analysis on line now . in our country , the method has been studied and used from 70 " s and has been more and more perfect . however , the neutron source they used is the isotope source 在国外，早已开始采用中子感生瞬发射线分析法( nipga )对物质进行元素分析，如今这种方法已经应用于实际生产和工业在线分析，国内在八十年代也开始研究、应用这种方法，如今已日趋完善，然而，他们使用的中子源绝大多数仍然是同位素中子源，做为一种可行性实验方法研究，我们采用脉冲中子发生器做为中子源，自行研制的线性门电路和多道脉冲幅度分析器相配合，获取非弹性散射和俘获谱，对物质进行元素分析。
Abstract : based on two order approximation of the variation of refraction index produced by self - action while optical pulses are traveling in kerr - medium , the propagation equation has been solved . furthermore , the strict analytical expressions of the amplitude , width and chirp parameter of chirped gaussian pulse , relative to the propagation distance , are deduced . the solitary wave traveling conditions of fundamental mode gaussian pulse have been discussed 文摘:将光脉冲在克尔介质中自作用产生的折射率变化作二阶近似，求解所得到的传播方程，得到啁啾高斯脉冲幅度，脉冲宽度和周啾参数随传播距离变化的严格解析解，讨论了基模高斯脉冲孤波传播的条件。
