集成pH－ISFET／压力传感器的研究

基于ＳＤＢ／ＳＯＩ材料和硅微机械加工技术，提出了一种含微参比电极和择优差分补偿单元的背面引线ＰＨ－ＩＳＦＥＴ／压力传感器的新结构。并且设计了高稳定的可调芯片自恒温系统，以减少硅材料对温度敏感的效应。这种结构既方便地实现敏感元和信号处理电路的完全隔离，又有效地改善了敏感特性和稳定性。初步实验结果证实了新结构设计是成功的。     

电容检测纱线传感器转换特性对纱线不匀率测试的影响

讨论了纱线测试中受电容检测纱线传感器转换特性的非线性影响，测得的条干不匀率值与纱线的实际条干不匀率值之间的差异，从理论上估计了纱线在不同的电容检测槽内测试时，由于其截面充满系数不同而引起的相对差异，并用试验数据加以验证。     

触觉传感器及其图象识别

本文讨论了两种触觉传感器,系统地阐述了这两种触觉传感器的数据采集系统和图象二值化的有关算法。     

Development of intelligent multisensor surveillance systems with agents

Intelligent multisensor surveillance systems consist of several types of sensors, which are installed on fixed and mobile devices. These components provide a huge quantity of information that has to be contrasted, correlated and integrated in order to recognize and react on special situations. These systems work in highly dynamic environments, with severe security and robustness requirements. All these characteristics imply the need for distributed solutions. In these solutions, scattered components can decide and act with some degree of autonomy (for instance, if they become isolated), or cooperate and coordinate for a complete tracking of special situations. In order to cope with these requirements and to better structure the solution, we have decided to design surveillance system control as a multiagent system. This is done by applying an agent-orientated methodology, which is assessed with concrete scenarios.     

硅微板条谐振式传感器谐振频率分析及计算

对硅微机械谐振式传感器的谐振频率计算提出了新的物理模型—两端固支薄板条模型，该模型不同于常说的硅桥（梁）或硅弦模型。计算结果表明该模型更符合实际，优于有关文献结果。     

注水站微机数据采集与控制系统

用工控机组成了油田注水站数据采集系统．给出了系统的组成及测量方法，并讨论了系统的可靠性等问题．     

液晶微位移传感器

液晶微位移传感器的工作原理是以负介电各向异性的向列相液晶材料的动态散射效应为基础的，文中给出了这种传感器的结构，测量方法、精度、应用范围和实验结果；研究了在阈值电压附近光的吸收和散射，讨论了该传感器的稳定性和遥控方法。     

反射补偿式光纤位移传感器的理论分析

概述了反射式光纤传感器的发展。讨论了这类光纤传感器理论分析中所采用的纤端出射光场光强径向均匀分布的假设。给出了纤端出射场的光通量分布函数,并以全光路补偿反射式光纤探头为例,建立了补偿机理的理论分析方法,给出了传感特性调制函数的解析表达式。最后,简要分析了这类光纤传感器的温度稳定性问题。     

Impacts of spectral band difference effects on radiometric cross-calibration between satellite sensors in the solar-reflective spectral domain

In order for quantitative applications to make full use of the ever-increasing number of Earth observation satellite systems, data from the various imaging sensors involved must be on a consistent radiometric scale. This paper reports on an investigation of radiometric calibration errors due to differences in spectral response functions between satellite sensors when attempting cross-calibration based on near-simultaneous imaging of common ground targets in analogous spectral bands, a commonly used post-launch calibration methodology. Twenty Earth observation imaging sensors (including coarser and higher spatial resolution sensors) were considered, using the Landsat solar reflective spectral domain as a framework. Scene content was simulated using spectra for four ground target types (Railroad Valley Playa, snow, sand and rangeland), together with various combinations of atmospheric states and illumination geometries. Results were obtained as a function of ground target type, satellite sensor comparison, spectral region, and scene content. Overall, if spectral band difference effects (SBDEs) are not taken into account, the Railroad Valley Playa site is a “good” ground target for cross calibration between most but not all satellite sensors in most but not all spectral regions investigated. “Good” is defined as SBDEs within ± 3%. The other three ground target types considered (snow, sand and rangeland) proved to be more sensitive to uncorrected SBDEs than the RVPN site overall. The spectral characteristics of the scene content (solar irradiance, surface reflectance and atmosphere) are examined in detail to clarify why spectral difference effects arise and why they can be significant when comparing different imaging sensor systems. Atmospheric gas absorption features are identified as being the main source of spectral variability in most spectral regions. The paper concludes with recommendations on spectral data and tools that would facilitate cross-calibration between multiple satellite sensors.     

Erosion-corrosion of a stainless steel distillation column in food industry

Unusual extended corrosion phenomena were detected in a distillation column made in AISI type 316 stainless steel (UNS S31600) of a plant for natural pectins extraction from citrus. The column was the first of a series of two distillation columns representing the unit core. Corrosion problems were observed only in that column and mainly along the surface of the trays located in the lower section of the column. The phenomenon was observed subsequently to a modification of the original plant layout that caused an increase of the operating temperatures and turbulence of the process stream inside the column.