Because of a large number of data processing to carry out , tms320c5402 dsp , electromagnetic ultrasonic transducer , oscillatory source circuit , receive signal disposal circuit , a / d , sram , flash memory and display circuit are selected to design the prototype of a machine of the real - time measurement system 由于要进行大量的数据处理，硬件电路采用了ti公司的tms320c5402dsp作为核心处理器件，辅以电磁超声换能器、激励源电路、接收信号调理电路、 a d 、 sram 、 flashmemory及显示电路，设计出实时检测系统的样机。
In order to collect the signals , a control interface of visual basic is completed . this control interface can accomplish real - time display and establish a file of case , at the same time , the numerical value of heart beat rate is sent to display circuit of fetal monitor , the synchronous display realized . if the heart beat rate is out of the normal scope , the lamps of alarm will be started 首先，把信号通过模入接口卡pc - 6360送进计算机，用vb做一个人机交互界面，实现了多路信号的采集和多路信号的实时显示，建立了病例档案，并把算出的心率值送给胎心监护仪的前面板显示电路，实现硬件的同步显示，在心率值异常时，能启动监护仪前面板上的报警显示，实现报警功能。
Firstly , the current testing localization in the detection of electric bow is analyzed and the new system ' s whole construction developed in this thesis is introduced ; in the 2rd chapter , the embedded 110v dc power supply is analyzed and constructed , and with experiments , some dissonant results such as the fluctuation of output pwm ( pulse width modulation ) pulses , the power noise added to output voltage , and the drop of output voltage have been analyzed and the problems have been broken down one by one ; in chapter 3 , stepping motor ' s drive has been systematically dissertated , and combing stepping motor ' s subdivided drive technology , the author develops an intelligent mini - step driving circuit using a main - sub microprocessor structure , which is validated in the hybrid stepper based system ; in the 4th chapter , liquid crystal driving and displaying technology is specified in detail , with one sort of lcd modules ( tlm12864h ) , the author develops an feasible circuit for the new testing system , designs a menu mode based program struc ture and brings here some programming codes using franklin c51 programming language ; in chapter 5 , the above built system is used in the electric bow ' s practical detection , and the differentiating rate of this system is analyzed 论文首先分析了目前机车受电弓检修方式存在的局限并概述了本论文研制的受电弓测试系统的体系架构；第二章对系统内置110v直流控制电源进行了分析和设计，结合试验对输出pwm振荡、输出电源噪声大、输出电压下跌等现象进行了分析并提出解决措施；第三章论述了步进电机的驱动，结合步进电机微步驱动技术研制了基于上下位单片机组的混合式步进电机智能驱动电路，并在试验中得以验证；第四章详述了液晶驱动及显示技术，利用一款液晶显示模块tlm12864h研制出本系统用液晶显示电路，设计了菜单式的程序结构并以franklinc51编程方式给出部分子程序代码；第五章则将以上构建的整个系统应用在机车受电弓的实测中，并对测试分辨率进行了分析。
Moreover , video control program to implement internal function of fpga is designed including video capture time sequence control , ping - pang frame buffer read and write time sequence control and lcd display time sequence control , and program ' s simulation and analysis is also provided . at last , this paper presents a portable iv ' s video processing system , and proposes three buffer strategy to control capture buffer . and a moving object detection algorithm of combing an adaptive background subtraction technique with a three - frame differencing is adopted 设计了基于fpga系统结构的车载视频显示电路板；利用单片机io口模拟i2c时序，实现了视频解码芯片控制；利用fpga实现视频控制，研究了采集通道时序控制、双帧存ram读写时序控制及lcd显示时序控制的方法，并进行了软件仿真和分析；设计了车载视频检测系统方案，给出了管理采集缓冲区的三帧缓冲策略，采用综合三帧差分和自适应背景相减的算法实现运动检测，连通体检测去除虚目标，仿真实验证明其有效性，同时分析了该算法在dsp视频检测系统中的简单实现方法。
In the part of detector , it mainly introduces the design of liquor tubes , heater , pressurize , and thermocouple ; in the part of controller , this design uses tms320lf2407 as the cpu . the design part mainly introduces controller circuit design which mainly contains data collection circuit , prepositive magnifying circuit , a / d convert circuit , failure self - diagnosis circuit , the tms320lf2407 interface circuit , temperature control circuit , display circuit , 4 ~ 20ma standard signal output circuit ; in the software part , it mainly introduces software chart of main program and partly linearization subprogram design 检测器部分重点介绍了导流管的设计、加热器的设计、密封技术的设计以及测温电路的设计;控制器部分以tms320lf2407为核心,重点介绍了控制器电路设计,主要包括数据选择电路、前置放大电路、 a / d转换电路、故障自诊断电路、 tms320lf2407接口电路、控温电路、显示电路、 4 20ma标准信号输出电路共八个部分;软件设计重点介绍了主程序软件设计及分段线性化子程序设计。
Design and make the blood pressure and artery stiffness appartus , including the design of filter , amplifier , adc , memorizer circuit , lcd circuit , communication interface circuit , power supply , etc . research the blood pressure arithmetics and bring forward a new blood pressure judging method based on existing oscillometric technique 该仪器硬件电路以at89c55单片机为核心，包括信号采集处理电路、 a / d转换电路、存储器扩展电路、液晶显示电路、自动充放气电路、串行通信电路、键盘电路等几大部分。
We give three installing schemes in the measuring hydraulic cylinder in the fourth chart and analyse thire merits and shortcomings . we discuss the possibility of measuring grinding wheel diameter by ultrasonic wave we give the full electric circuit schemes , including emitting and receiving circuit , measuring temperature circuit , displaying circuit , regulated power supply , a / d converter circuit and so on 给出一种新的计时方法。同时我们还讨论了利用超声测量钢坯磨床中砂轮直径的可能性。在本文中，还给出了完整的电路设计方案，包括:发射接收电路、温度测量电路、显示电路、稳压电源电路、 a / d转换电路等。
This paper is on the basis of the computer measurement and control system on heating net in shenyang huanggu heating - power plant < > the sub - station " s hardware and software of dcsch is studied and designed by writer , , and the hardware is composed with power , a / d , d / a , di , do and display circuit which used by single - chip computer of 89c52 while the software includes four parts : communication , data collect , display of lcd and control < , using the serial port of single - chip computer to communicate with upper - computer while communicate with lcm by adopting the bus to simulate serial port , some measurers of resisting interfere are adopted in hardware and software in order to composed a effective spot monitor computer system 本文以沈阳皇姑热电厂热网微机测控系统为基础，研究和设计了分布式集中供热控制系统中各热力子站现场监控部分的硬件和软件。硬件上采用89c52单片机组成监控系统，主要包括电源、 a d 、 d a 、 di 、 do及显示电路；软件实现分为四部分：通讯部分、数据采集、 lcd显示和控制部分。其中与上位机通讯采用单片机的串行口而与lcm通讯采用单片机口线模拟串行口的方法实现。
Hardware circuit includes the unit loop circuits such as main loop circuit , drive circuit , control circuit , protective circuit , the circuit of power source and displaying circuit etc . the function that the induction cooker can realizes are mainly as follows : heat function , warm function , time function , no pan detecting and alarm function , which includes overheat alarm , over voltage or under voltage alarm , fan failure alarm etc . the displaying interface has digital number display indicator and vacuum fluorescent display 硬件电路主要包括主回路、激励电路、控制电路、保护电路、电源电路和显示电路等单元回路，主要实现的功能如下：加热功能、定温功能、定时功能、无锅检测功能、报警功能，具体包括过热报警、过压或者欠压报警、风扇失效报警等。显示界面有数码管显示和真空荧光屏显示。
The article mainly narrates the system in two parts . firstly , it describes the hardware including the sensor , collecting and processing circuit , and the display circuit . secondly , it presents the system " s software composed of the main program , the second interrupt program , and the communication interrupt program , and discuss the status of ram 在本文中，主要从两个方面对冰厚测报仪系统进行了介绍，首先介绍了系统的硬件(传感器、采集处理仪、面板显示电路) ，然后介绍了系统的软件情况：包括主程序、秒中断程序、通信中断程序，这其中还对8031中的内存使用情况进行了介绍。
