In this system , mean velocity pipe is applied to transform the air velocity signal into pressure difference signal , and then the pressure difference signal is input into pressure difference transmitter to realize the transform of the pressure difference signal from non - electricity signal to electric current , and through the resistance in the corresponding sampling circuit the electric current is transformed into voltage signal ; the thermocouple is used as the primary element to realize the transform from temperature signal to the voltage signal ; under the control of communication agreement module , diversified voltage signal is transported into computer by way of a / d conversion module , and then the monitoring software compiled beforehand is transferred to deal with all the voltage signals relatively , the result of which is conveyed to relative interface to display 该装置具有三个特点:一是采用表面式测温方法,有效地减少了元件的维护与损耗;二是采用工业控制计算机及信息就地采集、数据总线传输的方式,充分利用计算机和数据自动采集方面的技术,实现各种参数的在线测量,监测指标全面,能与dcs系统联用,具有技术先进性和一定的前瞻性;三是采用显示器配工业触摸屏的显示方式,为现场运行人员提供了简单、易学、方便的操作模式。本装置自2001年8月投入运行以来,有效地帮助、指导运行人员进行燃烧调整,对于锅炉和机组的安全、经济运行发挥了重要作用。
The pressure difference signal was acquired under different air and pulverized coal flow condition on gas - solid test - bed . on the basis of studying chaos theory and its application , a set of software used to analyze characteristic numbers of chaotic time series is accomplished , deterministic chaos theory is applied to the pressure difference series by the software , and some preliminary conclusions are drawn . li yu ( thermal power engineering ) directed by prof . chen hongwei , prof . guan jinfeng 在气固两相流实验台上进行不同工况下的空气和煤粉两相流动试验,采集得到差压信号时间序列;在总结混沌理论及应用基础上,编制一套较为完整的混沌时间序列特征量分析软件;使用该软件,将确定性混沌理论应用在两相流不同工况的差压时间序列分析中,认为相空间吸引子图和延迟时间可以用来对两相流流动状况进行定性的判断。
difference signal meaning:[Electronics] 1. The resultant signal obtained by subtracting, at every instant for at least one full cycle, the amplitudes of two signals. 2. The difference of the left- and right-channel outputs in...difference signal перевод:разностный сигнал