查询词典 sensors

It's pointed out that soft sensor will play more important role in field bus network control system. According to this, a crude solution was addressed. At last, we point out that soft sensor technology must used to build an information warehouse for the whole enterprise, combined with data fusion, data warehouse, data rectification and other related technologies. The main contributions of this dissertation are as follows: The background, requirement, and application situation of soft sensors are expounded, the theories, methods and skills of soft sensing technology are analyzed, and the fruits and problems in current soft sensor technologies are summarized. Some new methods of soft sensor is proposed: A principal component analysis-based secondary variable selection method are proposed; A new conception which modeling data should have gross error detection is addressed, and then a cluster analysis-based modeling data gross error detection method is given.

本文的主要贡献有：对软测量技术根据实践的要求进行了一定的理论研究，针对具体问题提出了新的方法：讨论了辅助变量选择问题，研究了基于主元分析的辅助变量选择方法，该方法克服了传统方法只能利用数学模型产生的仿真数据进行最优辅助变量选择的缺点，可以根据历史数据进行辅助变量选择；提出了建模数据显著误差侦破的概念，指出传统的显著误差侦破研究的是已知过程数学模型的情况，而建模时数学模型是未知的，但是直接来自现场的数据并不能保证不含显著误差，并用基于聚类分析的方法解决了该问题，该方法利用聚类分析原理，直接面对过程数据，不需以过程模型为基础，在此基础上给出了软测量建模过程中样本数据的处理方法。

The principium and structures of the sun sensors are showed in this paper, and the development status outside are introduced.

本文对太阳敏感器的基本原理、构成等进行了简要说明，介绍了当前国外太阳敏感器的发展现状，并对太阳敏感器的发展趋势进行了简要分析。

The results indicated that the composite films exhibited much improved gas sensing performance.The phthalocyanine and its a-Fe2O3 embedded nano-particulate LB filmswere prepared by Langmuir-Blodgett technique. The films were characterized by AFM, UV-Vis and FT-IR spectra. The results indicated that the embedded LB films were composed of a-Fe2O3 nanoparticles and isopropoxyphthalocyanine molecules. The gas sensitivity of such prepared composite LB films was greatly improved. The film could detect 5ppm of propyl alcohol at room temperature. The composite films could be considered as gas-sensors for alcohols.

利用LB技术制各了异丙氧基酞菁铜LB膜和酞菁铜包埋球形α-Fe_2O_3纳米粒子的杂化LB薄膜，对其AFM、紫外和红外光谱的研究表明，利用LB技术可以实现酞菁与α-Fe_2O_3纳米粒子的有序组装，而且杂化薄膜对醇类气体的灵敏度有较大幅度提高，如对浓度为5ppm正丙醇的灵敏度为3.85，因此，杂化薄膜可以作为室温下醇类气体传感器进行开发研究。

LaCr_(1-x)M_xO_3(M=Co, Fe, Ni, Sn, Ti)and LaNi_(1-x)Ti_xO_3 compounds were synthesized by sol-gel technique in this paper. The thick film based sensors were fabricated and their gas-sensing properties were tested in the acetone, ethanol, normal propyl alcohol, carbinol, formaldehyde gases etc.

本文采用柠檬酸盐溶胶-凝胶法合成了LaCr_(1-x)M_xO_3(M=Co，Fe，Ni，Sn，Ti)和LaNi_(1-x)Ti_xO_3系列化合物的纳米粉体，并制备了厚膜型气敏元件，在丙酮、乙醇、正丙醇、甲醇、甲醛等有机气体中测试了它们的气敏性能。

A to-be-detected plate (25) for prevention of rear-end collision is provided at the rear end of the transport mover V. The to-be-detected plate (25) can enter a space between the proximity sensors (23, 24) and the decelerator/stopper W.

在各运输用电车V的后端，设有进入第1及第2非接触式传感器23、24与减速/停止装置W间的防追尾用被检测板25。

Temperature or flux sensors may be used in the the heat quality intensity analysis system for puddling fumace,RBF neural network is used to judge sensor fault for insureing the credibility of sensor data and the stability running of the heat quality intensity analysis system.

在炼铁高炉热流强度分析系统中要用到温度、流量等传感器，为确保热流分析系统中传感器数据的可靠性及系统的连续、稳定运行，诊断系统用径向基函数神经网络对传感器进行故障判断。

He was pleased to see the alien's bulbous snout sensors begin to pulsate.

他看到外星人球茎般的吻喙感受器开始搏动时，很是得意。

After ICA processed the signals, the components will be changed in a puniness way to explore the difference from the output by all sensors, then calculate the information that was provided by each sensor with statistical method, and decide the sensitive sensor location.

通过ICA-ANN对结构物信号进行提取、学习，让独立分量通过微小的改变去探测所有传感器的输出的变化差异，然后用统计学方法计算每个传感器提供的信息，确定敏感传感器的位置，从而确定敏感传感器。

The principles of contactless infrared measuring temperature with pyroelectricity infrared sensors, the system structure of infrared measurement temperature and its component of signal processing circuits are introduced, its aim is to carry out contactless temperature measurement for a moving body.

摘要介绍了利用热释电红外传感器进行非接触式红外测温的原理、红外测温系统结构和信号处理电路的组成，目的是实现对移动物体的非接触式温度测量。

Light sensors find use in a host of important applications, spanning from consumer electronics, such as ambient-light measurements and exposure control for cameras, to scientific instruments, such as optical-absorption spectroscopy, IR detection for thermography, and two-color pyrometry.

光学传感器有重要应用，跨越的领域从消费电子，例如环境光测量和照相机曝光控制，到科学仪器，例如光吸收谱，IR温度探测和双色测高温。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。