To meet this request , we develop the process control experimental system . it use all kinds of sensors to obtain the value of pressure , liquid location , temperature , flow ? four kinds of basic physical quantities , etc . and through the intelligent meters , data collecting circuit , it sends the measuring signal to the computer , then realize the functions such as fictitious showing , data processing and real - time control by industrial configuration software 为满足这一要求，我们研制开发过程控制实验系统，它采用各类传感器，获取压力、液位、温度、流量等四种基本物理量，并通过智能仪表、数据采集卡，将测量信号转送到计算机，再利用工控组态软件完成虚拟显示、数据处理和实时控制等功能。
In the second chapter , equivalent circuit of the eddy current sensor is firstly analyzed . based on that , the carrier signal generating circuit that is realized by the lc periodic circuit is introduced , thus , the carrier signal of standard frequency is obtained through the trimming capacity . subsequently , the disc type rotational armature generator and the rotational coupling transformer are separately leaded in to realize the power supplies of the carrier signal generating circuit and output of the measuring signal 在传感器设计一章中，首先对涡流传感器进行等效电路分析，在此基础上分析了由电感、电容谐振电路构成的载波信号发生电路，并通过微调电容获得了标准频率的载波信号；接下来提出了采用盘式旋转电枢发电机解决载波信号发生电路电源供给问题的方案，同时通过旋转耦合变压器的引入，使得测量信号输出问题很好地解决；本章最后给出的一组实验曲线充分说明了这一方案的可实现性。
Therefore , it is essential for me to do furture research , the measure technology about digital viedo is that measure signals have been coded and decoded based on coding and decoding technology . so the image quality of original signals can been assessed on the basis of assessment methods of video qulity through image , wave and data monitors in the output , and it is observed intuitively that different factors affect on the qulity of image 数字视频测量技术是根据编解码技术对测量信号进行编解码，在输出端通过图像、波形和数据监视器，依据的视频质量评价的方法对输入的原始信号的质量进行评价，并且可以直观地观察到各种因素对图像质量产生的影响。
A coherent electromagnetic pulse in the range between the far - infrared and microwave region is used as a detection source . the amplitude of the wave is recorded by electro - optical or photoconductive sampling . after fast fourier transform , the amplitude and phase of the wave is given , then the complex refractive index standing for the absorption and dispersion of the material in thz region is extracted Thz ( 10 ~ ( 12 ) hz )时域光谱技术是20世纪90年代发展起来的一种新型的光谱测量技术，它使用频率介于远红外和微波之间的相干电磁辐射脉冲作为探测源，利用电光取样或光电导取样的方法直接记录thz辐射电场的振幅时间波形，通过傅立叶变换得到测量信号振幅和相位的光谱分布，进而获得材料在thz波段的复介电常数，即色散及吸收等信息。
Operator on prpd mode of pd signal , mode - classifying implements based on bpnn and sart are compiled . the artificial neural networks designed are applied to recognize measured signals . conclusions are made : recognition rate of bpnn is 95 % , and it is respect to magnitude of discharging signal and increases while signal magnitude increasing ; the recognition rate of sart neural network is 98 % , higher than that of bpnn , recognition rate increasing with the number of signal group 论文用设计的人工网络模式识别程序识别测量信号：以prpd信号模式的放电次数为输入时， bp网络识别率为88 ，识别率和发生局放的强弱程度有关，局放信号越强，识别率越高；以prpd信号模式的统计算子为输入时， bp网络识别率为95 ；以prpd信号模式的统计算子为输入时， sart网络识别率为98 ，识别率随着样本量的增加而提高。
