用于光纤弱磁场测量的单片机数据采集与处理系统

介绍了基于磁致伸缩原理的光纤弱磁场测量传感器以及为提取被测直流、低频弱磁场信号而设计的单片机数据采集与处理系统,分析了该传感器的各项误差,并给出了实验结果。     

非规则物体位移的测量

在测量非规则物体位移时，研制了一种新型位移传感器－滚动光栅位移传感器。它能在线测量一些特殊的长度量。文章较为详细地对该传感器结构作了介绍，并通过测试和检验证明该传感器能达到较高的测量精度。     

半导体光纤温度传感器特性研究

设计了一种新颖的半导体光纤温度的传感器。通过实验的方法研究了采用不同光源时传感器的输出特性。根据实验数据了分析了传感器的灵敏度、测量范围、线性度和重复性与光源光谱性之间的关系。实验结果表明用该光纤温度传感系统可以实现对温度的非接触稳定测量。     

自扫描光电二极管阵列光电信号测量系统及其测试实例的研究

本文介绍了一种利用自扫描光电二极管阵列(SSPDA)图象传感器作为光电转换器件,可用于大面积显示器件图象质量评价和测微领域的测量系统。该系统由光学成象、SSPDA图象传感器、数据采集、接口电路和微型计算机等部分组成,能对各种被测量参数进行处理,并打印出数据和曲线。通过对彩色显象管(CPT)的线宽、三束间距以及光学狭缝等的测试,该系统显示了足够的测量精度。     

非规则物体位移的测量

在测量非规则物体位移时，研制了一种新型位移传感器──滚动光栅位移传感器。它能在线测量一些特殊的长度量（如线位移、非圆物体的周长、眼镜镜片的当量直径等）。文章较为详细地对该传感器结构作了介绍，并通过测试和检验证明该传感器能达到较高的测量精度。     

叶片叶尖间隙测量的光纤传感器

根据叶尖间隙测量的要求,设计了一种新型的光纤传感器。它采用了单光纤传光、多组光纤束接收散射光的结构。发射光纤位于中心,周围均布多组接收光纤。通过各组接收光纤光强的比值运算,消除了叶尖表面反射率变化对测量结果的影响,也可减小叶尖表面与传感器端面夹角给测量结果带来的影响。在转速同步传感器的配合下,该传感器可以实时测量所有叶片的叶尖间隙。当叶片转速在0—12000r／min之间变化时,叶尖间隙的测量范围为0-3mm,测量精度为25μm。     

一种用于测量弹丸转速的传感器

本文将介绍一种用于测量物体运动转速的传感器，详细地叙述了该传感器的设计和工作原理，给出了可测量范围。     

磁性液体倾角传感器研究

利用永磁体在磁性液体中悬浮的特性,提出了一种新型一维倾角传感器,给出了该传感器的工作原理,设计了传感器样机。采用实验方法测试两个永磁体间磁斥力曲线,并据此确定传感器主要结构参数和特性参数,得到其倾角检测灵敏度表达式。设计了传感器中运动部件的位移的检测电路及转换电路。实验结果表明,当倾角在-18°～18°之间时,输出电压与倾角间成线性关系,其分辨率为0.04°;当倾角在18°～90°（-18°～-90°）之间时,输出电压与倾斜角的关系为非线性关系,且分辨率逐渐降低。该传感器结构简单,无磨损部件,为倾角测量提供了新的途径。     

TCS230传感器在彩色反射密度测量中的应用

介绍了TCS230颜色传感器的特性,结合印刷密度测量的特点,给出了TCS230传感器在彩色反射密度计设计中的使用方法及电路。实验证明,该电路能较好地满足测量需要,实现了彩色反射密度的测量,且在稳定性和精度上达到了设计要求,为TCS230颜色传感器的使用提供了应用实例。     

线阵CCD传感器在材料变形量测试中的应用

阐述了用线阵CCD传感器对材料拉伸变形量进行非接触测试的基本过程。介绍了CCD传感器测量变形量装置的基本原理。给出了采用数字图像处理技术非接触测量变形量的方法,包括图像的预处理,二值化等。该装置结构简单,可对材料进行非接触,无磨损式测量。通过对系统的标定证明了该系统的可靠性。讨论了影响CCD测量精度的各种因素。     

Effect of Permeable Crystalline Material on Steel Reinforcement Corrosion of Concrete

Permeable crystalline materialcan permeate into pores and cracks of concrete and catalyze the reaction between Ca(OH) 2and unhydrated cement to generate a great quantity needle non-soluble crystals, which can stop up the pores and cracks of concrete, and increase the impermeability of concrete. This paper reported the results of a study conducted to evaluate steel reinforcement corrosion of concrete specimens uncoated and coated with permeable crystalline material as well as mixed with the permeable crystalline material. The properties evaluated for corrosion test were water impermeability, water absorption, compressive strength and potential. The results of water impermeability, water absorption, compressive strength clearly showed that the permeable crystalline material could prohibit water, any soluble salts and moisture from penetrating the concrete to cause corrosion, leaking, and other problems, and it did increase the compressive strength, which was favorable for protection of corrosion of reinforcing steel. Moreover, it was concluded from the potential-time curve that the steel reinforcement of uncoated specimen was in the state of activation whereas that of other specimens coated and mixed with the permeable crystalline material was in the state of inactivation. Above all, it was indicated that the permeable crystalline materialis very effective to protect the steel reinforcement of concrete from corrosion.     

The Research and Application About "Dry Peeling Off" Technology for Airplane Surface Paint Layer

In this paper, the principle of spurting take off lacquer were introduced; and with orthogonal method the unsaturate polyester was prepared ;it was easy to peel airplane paint layer off with this material and equipment.     

Quality Study of Honeycomb Core Shaping Without Wax Stabilization

Sandwich panels utilizing honeycomb cores result in lightweight, high-strength units that are very rigid. Indeed, they give honeycomb panels the best strength-to-weight ratio of any construction type available. Conventionally, the wax is poured into the cell of the core to strengthen the structure and prevent the core from being crushed during milling. Much time and labor is required to wax, mill, and clean the cores. In this study, the process of pouring wax into the core was skipped. In other words, the cutter directly milled the core. Experiments showed that the compressive strength of the core produced without wax stabilization was only 3% lower than that of cores produced using the traditional method. In addition, the drum peel strengths of cores produced without wax stabilization were 38.4% higher than cores produced using the traditional method, in which residual wax seriously polluted the adhesive. It was also found that eliminating the wax process can reduce costs.     

In-process thermal treatment of polylactic acid in fused deposition modelling

Polylactic acid (PLA) is one of the most widely used open source fused filament fabrication materials due to its ease of extrusion, biodegradability, and mechanical strength. The mechanical strength of PLA largely depends on the proper growth of its semi-crystalline structure, which can be severely impaired by a low rate of crystallization, particularly in open source printers. This can be further aggravated by the non-uniform thermal distribution of heat that causes improper curing among the extruded beads of the printing material. As a result, PLA printed on open source printers does not achieve the best mechanical properties. This research, for the first time, proposes an additive-free solution implemented through a detailed set of experimentation to improve the curing rate through in-process temperature variations to cure the joints among the beads. Scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and Fourier transform infrared (FTIR) spectroscopy is used to confirm the improvements in the bead joints. This work is conducted in two phases of experiments. In the first phase, a full factorial ANOVA is used to investigate various process parameters and the important variables are used in the second phase to print test specimens in four different sets.     

Investigation of the Corrosion Behaviors of HVOF-Sprayed Carbide Cernet Coatings in Molten Al-Zn-Si Alloy Bath

In continuous hot-dip galvanization process the corrosion and chemical stability of the sink roll in the galvanizing bath are important problem which effects on the quality and productivity. In order to protect the sink roll the carbide cermet and/or ceramic coatings were deposited on the surface of the sink roll. The WC-, Cr3 C2-cermet coatings were deposited by high velocity oxygen fuel (HVOF) spray, respectively. The coating samples were immersed in molten Zn-alloy containing 50 wt % aluminum at 833 K for 24 hr and 144 hr, respectively. The inter-diffusion and inter-reaction of Zn, Al and elements in coating and corrosion behaviors of these coatings were investigated by XRD, SEM and EPMA etc. The corrosion mechanisms of the carbide cermet coatings and ceramic coatings in molten High Al-Zn-alloy were approached.     

Fundamental study of adhesion of ice to cooling solid surface (Discussion on influence of copper oxide layer on ice adhesion force)

In many situations, ice often adheres to a cooling solid surface, frequently causing serious accidents. It is critical to clarify the mechanism of ice adhesion to the cooling surface in order to prevent ice adhesion. In a past study, the shearing stresses of two kinds of test plates with a copper surface having the higher thermal conductivity were measured. The shearing stress corresponds to ice adhesion force. Both shearing stresses were significantly different; however, the cause remains unclear.Therefore, the present study focuses on an oxide layer as the main factor causing the difference of both shearing stresses; the influence of the oxide layer formed on shearing stress was discussed. And in the removal and reformation processes of the oxide layer, the time variation of the shearing stress was clarified. Moreover, the relationship between the state of the copper surface and the shearing stress was also clarified by surface analysis.     

＂Three Transformations＂ and Standardization

During his inspection in Henan Province in May, Chinese President Xi Jinping stressed to ＂push forward the transformation from China Speed to China Quality, from Made in China to Created in China, and from Chinese Products to Chinese Brand＂. The ＂Three Transformations＂ are the specific requirements and goal of China＇s national development in the context that market should play a decisive role in the allocation of resources.     

重塑标准推行格局 推动LED照明的普及（英文）

正When you are enjoying the green,energy-saving and healthy lighting of IKEA LED luminaire,you may not realize that most of IKEA’s LED bulbs are produced by the LED luminaire smart manufacturing system of Hangzhou Zhongwei Photoelectricity CO.,LTD(ZVISION).No longer enclosed in the laboratory,the product standards are brought into the factory workshop and even to the entire production process.Thus,the standards are promoted and applied in a favorable way by enterprises,benefitting consumers with high quality products.     

Chinese Experts Contribute to ISO＇s New Toy Standards

正The international standard,ISO 8124-6,Safety of toys–Part 6:Certain phthalate esters in toys and children’s products,was officially issued by ISO worldwide on August 15.It was the first time for Chinese experts to lead the ISO standard development in toys industry.The standard was drafted by a group of Chinese experts from SAC/TC for toys and relevant Chinese departments and finally completed by a dedicated international group of experts.ISO 8124-6 makes a substantive breakthrough in the aspects of the scope of toys,limitation of plasticizer types,control of test cost,accuracy of test,operation convenience,etc.,offering the operational guidance for toy manufactures and testing laboratories.     

SAC Delegation Visits AENOR and Signs Cooperation Agreements

正SAC Administrator Tian Shihong led the Chinese delegation to visit the Spanish Association for Standardization and Certification(AENOR)on September 15,2014.Mrs.Begona Cristeto,the Vice-Minister of Industry,Energy and Tourism of Spain,and Mr.Avelino Brito,the President and CEO of AENOR greeted the delegation.The two sides had a deep and friendly discussion on strengthening the cooperation between China and Spain in the standardization field and promoting the standardization work to support the development of economy and trade in the two countries.