Generalization of the thermal model of infrared radiation sensors

In many theories and applications, generalized models can give a good head start for further research where the implementation of new elements and/or boundary conditions could become quite complex. In this paper the development of a compact thermal model of an infrared sensor will be presented. This thermal model includes not only the thermal resistances and capacitances of the sensor structure itself but the radiative and convective thermal resistances to the ambience and between the sensor plate and the heat source (thermal transfer impedance) which is important when the heat source and the sensor are in close proximity. Limitations and the applicability of the proposed model are also discussed. We also aim to present how the proposed model can be used for other IR sensor structures as well.     

Fast Transmission Photothermal Radiometry via Sampling by an Internal Computer Sound Card

During the last few decades, photothermal radiometry (PTR) has been greatly developed and widely applied in the field of nondestructive testing. However, the traditional PTR system employs an expensive lock-in amplifier to detect the weak photothermal signal, which leads to high cost and long test time. In this paper, a fast transmission PTR system based on sampling by using an internal computer sound card was developed to lower the system cost and shorter the test time. A piece of amorphous silicon (a:Si) thin film solar cells with artificial defects was prepared and tested by the system. The results show that the sharpened defects can be identified easily and quickly according to the significant peaks of the original infrared signal sampled by the internal computer sound card. Furthermore, more detailed defects can be investigated by processing the infrared signal. These validate the effectiveness of the proposed transmission PTR system as a low cost and efficient non-destructive test technique.     

射频识别技术在钢管制造中的应用

介绍钢管管号识别方式,分析射频识别技术在钢管制作流程中的应用。分析认为:利用射频识别技术自动读取钢管管号,可以解决MES人工输入存在的输入错误、滞后等问题;射频识别设备具有远距离快速识别标签的特点,应用在钢管生产流程中可以最大限度地提高生产效率和准确性。射频识别技术应用近5年来,虽存在重复发卡、数据读取错误等问题,但通过技术和工艺调整,目前使用效果良好。     

基于虚拟仪器技术的超声数据采集系统设计

介绍了一种基于PC—DAQ结构的高速超声数据采集系统,系统硬件主要由RVO3050数字示波器和PC机组成,软件设计主要采用图形化编程语言LabVIEW,该系统采用模块化的软、硬件结构,便于移植应用到各种场合。     

基于EVT的GPS RTK接收机研制

本文介绍了GPSRTK接收机的主要结构及其通讯功能 ,重点阐述WindowsCE编程的主要特点和编制接收机程序的关键技术。论证了运行WindowsCE的PDA结合GPSOEM板可以开发性能优越的GPSRTK接收机的可行性     

建立建筑工人注册绿卡制度的构想

借鉴香港特区实行的建筑工人“绿卡制度”,提出了在大陆建立建筑工人“注册绿卡制度”,阐述了建筑工人“注册绿卡制度”的特点,并对如何实施进行了构想,旨在真正落实建筑工人安全培训制度,减少建筑施工事故的发生,为建设行政主管部门决策提供建议。     

商业融合文化本土孕育世界——武汉光谷世界城步行商业街设计

武汉光谷世界城步行商业街完全体现了第三代商业步行街的特征强词人、强调文化、强调环境、强调人与自然的融合、强调经济价值和社会价值的双赢.它浓郁的世界建筑文化气息传承了城市文脉,使之参与城市生长,与城市共生.它以城市和建筑为表现手段,以人和生活为骨架,其本质功能是为城市生活而存在,是组成城市的一部分,其特征是多元的、混合的、开放的,不仅满足城市的物质生活的需要,而且给市民、居住者、体验者带来文化和精神上的享受.     

地铁车站地下连续墙钢筋接驳器安装工艺的改进

地下连续墙的钢筋接驳器就是在地下连续墙钢筋施工的同时,根据以后地下结构楼板的标高要求,为以后地下连续墙和楼板整体连接而预埋在地下连续墙钢筋笼上的接驳件,接驳器的形式为钢管内螺纹式。在苏州地铁星湖街站的施工中,通过对接驳器施工的质量现状的调查和分析,提出了一种改进接驳器施工质量的方法——"定位卡"及"封盖板",现场试验的效果表明,改进工艺后克服了接驳器定位偏差和丝牙破坏、锈蚀等弊病。     

从保持公园特色到打响城市品牌——连云港“在海一方”公园设计探析

以连云港市"在海一方"公园的设计和建设为例,阐述城市公园建设中要摒弃好大喜功、贪大求洋的做法,坚持"宁小勿大、宁精勿乱、宁专勿杂"的指导思想,把公园作为城市特色的一张名片,打响城市品牌,并最终成为市民休闲娱乐的胜地。     

电力巡检信息管理系统

简述了电力巡检信息管理系统的适用范围和作用,分析了该系统的基本原理,对手持式巡检仪进行了介绍,研究了该信息管理系统中的计算机软件系统,得出了该系统可靠性高、使用方便的结论。