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关键词： 图书馆   物联网   ZigBee   传感器技术   嵌入式技术  

摘要： 随着人民生活水平的不断提高，人们在追求物质文明的同时开始重视精神文明的建设，阅读成为越来越多的人的选择。常见的图书馆如社区图书馆，高校图书馆。作为一个收藏资讯、原始资料、数据库并提供相关服务的场所，为了满足人们的需求也在不断的扩充其馆藏数量与种类，在日常的运营当中，图书馆除了要做好书籍的管理外，还需要维持图书馆良好的环境。然而，随着馆藏数量的增加以及人流量的增长，对于图书馆的管理带来了巨大的挑战。 图书馆中拥有包括普通书籍、CD音像资料、古籍、珍贵艺术品在内的多种馆藏，为了更好地保存各类馆藏资源，维持合适的温湿度以及监控珍贵艺术品都面临着很多的挑战。同时，火灾的及时报警对图书馆而言也非常的重要。 针对图书馆这种特殊的应用场合，本文提出了基于物联网技术中的嵌入式技术，传感器技术以及无线传输技术相配合的图书馆监控系统。依据物联网技术的三层结构：感知层、网络层、应用层，图书馆监控系统也按照三层结构进行设计。其中的感知层由温湿度传感器，加速度传感器，烟感传感器共同组成，提供多种自然环境的传感信息；网络层采用流行的ZigBee网络进行网络覆盖与数据传输；应用层采用基于ARM处理器的嵌入式Linux以及在操作系统上运行的Sqlite数据库与QT框架共同实现，提供良好的人机交互界面。在这样的三层结构中监控系统的设计目标为良好的感知能力，快速的报警功能，灵活的组网方式，良好的人机交互，优秀的拓展能力以及整体的低功耗运行方式。 本文提出的图书馆监控系统可实现对图书馆的不同区域、不同楼层、不同书架的多种数据采集与监控；在发生异常情况时及时通知工作人员并提供具体的异常信息；为工作人员提供历史数据帮助图书馆的改进管理；对重点保护的馆藏提供一对一的监控；提供简单易用的界面方便工作人员迅速了解当前馆内情况；减少工作人员的日常巡视工作。于此同时本系统也具有良好的拓展性，在同样的技术框架下，只需对感知层的传感器类型，网络层的现场组网方式，以及应用层有针对性的人机接口的简单修改后可运用到其它场合中。

关键词： 开关磁阻电机   无位置传感器   电感分区   变压器电势   运动反电势  

摘要： 开关磁阻电机具有结构简单，工作可靠，容错性能强等优点，适合在恶劣环境下工作，尤其是在高温、高污染、强电磁干扰和核辐射等极端条件下的应用场合具有独特的应用优势，因此被广泛应用于航空航天、电动汽车、船舶、飞轮储能、纺织机械等诸多场合。但是开关磁阻电机的稳定运行依赖于准确的转子位置信息，转子外加位置传感器不仅增加了电机的体积和成本，而且严重影响了其在恶劣环境下运行的可靠性，所以，研究实用的无位置传感器技术具有重大的工业应用价值。 本文介绍了开关磁阻电机的工作原理、基本方程和数学模型，并在此基础上列举了电机的不同控制策略。 本文首先提出一种电感分区比较式无位置传感器技术。该方法利用计算所得各相电感大小逻辑关系随转子位置呈区域性变化的特点，将转子位置分区加以辨识，从而得到每一相的位置脉冲信号，并估算出转子位置信息，实现无位置传感器运行。文章还分析了关断角的改变对转子位置分区的影响，并根据每种情况下各相电感逻辑关系与转子位置区间的对应关系将其整合成统一的位置估计算法，仿真和实验均验证了该方法的有效性。 上述算法的实现需要利用每一相电感信息，缺乏容错性，为了增加算法的容错性能，本文又研究了一种通过检测开关磁阻电机变压器电势与运动反电势交点来估算转子位置的无位置传感器技术。该方法利用电感模型推导上述交点位置理论值，并将其作为实际检测到交点时转子位置的参考值。由于传统电感模型无法用来推导交点位置，因此本文提出一种开关磁阻电机的新型电感模型，并在该模型基础上求解交点位置。仿真分析验证了该算法理论的正确性，本文在此基础上还做了进一步实验验证。 最后，介绍了系统硬件平台和软件程序的设计。硬件平台主要包括主功率电路，数字控制器以及电压、电流采样电路等；软件程序主要讨论了两种无位置传感器方法的设计流程。

关键词： 传感技术   物联网   传感器技术   高峰论坛   杭州   浙江  

摘要： 会议时间和地点时间:2013年10月22-25日(22日报到,25日17时疏散)地点:浙江三立开元名都大酒店(杭州市)主办单位德国传感器技术协会(AMA)杭州市西博办中国电子元件行业协会敏感元器件与传感器分会杭州市经信委中国仪器仪表行业协会传感器分会杭州钱江经济开发区指导单位中国物联网研究发展中心

关键词： Elder care   Sensors   Technology   Gerontechnology   Wireless sensors   Self-care   Technology acceptance model   Dementia   Quality of life   Caregiver   Business model   Eudemonic   Hedonic  

摘要： Purpose - The purpose of this paper is to empirically examine health professionals' recognition of sensor technology as a means to enhance quality of life (QoL) of care recipients with dementia, in Switzerland and France. In light of this research, the authors suggest potential vectors of development for wireless sensor technology (WSN) businesses working in gerontechnology. Information and communication technology (ICT) for the aging is a high-potential, nascent market in which the technology-enabled solutions lack business models to make them readily available and easily-accepted. Design/methodology/approach - To enhance the contribution of the study to both theory and practice, a mixed methodology combined qualitative and quantitative approaches. Similarly, the data collection techniques included interviews, a case study and an online questionnaire. Multiple regression analysis was used to analyse the quantitative data to examine the relationships between elements of WSN-adoption and QoL aspects. Findings - Positive respondent attitude towards gerontechnology as a means to enhance QoL led to the consideration of possible value propositions and innovations at the centre of future business models, channel development and multidisciplinary collaboration that could overcome major social and political obstacles. Originality/value - This study's originality lies in its intention to survey professional caregiver perceptions in order to identify value creation potential.

关键词： Label-Free   Cantilever   Principles   Blood Glucose   Concanavalin A   FREQUENCY SHIFT   Glucose   Principle-Based Ethics   Atomic Force Microscopy   glucose homeostasis   sensor technology  

摘要： Efficient maintenance of glucose homeostasis is a major challenge in diabetes therapy, where accurate and reliable glucose level detection is required. Though several methods are currently used, these suffer from impaired response and often unpredictable drift, making them unsuitable for long-term therapeutic practice. In this study, we demonstrate a method that uses a functionalized atomic force microscope (AFM) cantilever as the sensor for reliable glucose detection with sufficient sensitivity and selectivity for clinical use. We first modified the AFM tip with aminopropylsilatrane (APS) and then adsorbed glucose-specific lectin concanavalin A (ConA) onto the surface. The Con A/APS-modified probes were then used to detect glucose by monitoring shifts in the cantilever resonance frequency. To confirm the molecule-specific interaction, AFM topographical images were acquired of identically treated silicon substrates which indicated a specific attachment for glucose-Con A and not for galactose-Con A. These results demonstrate that by monitoring the frequency shift of the AFM cantilever, this sensing system can detect the interaction between Con A and glucose, one of the biomolecule recognition processes, and may assist in the detection and mass quantification of glucose for clinical applications with very high sensitivity.

关键词： 传感器技术   “卓越计划”   力学传感器   实验课   测量电路   工程设计能力   课程教学   改革探析  

摘要： 在"卓越计划"以强化工程实践能力、工程设计能力与工程创新能力为核心的指导下,根据近年来《传感器技术与应用》的教学经验,探析该课程体系的重构、教学内容、实验教学改革。着力推动实用型方法的学习,加强学生创新实践能力的培养。

关键词： 行动导向教学法   教学内容   教学组织   教学评价  

摘要： 针对传统传感器教学内容上偏重理论推导、教学方式上采用满堂灌导致学生缺乏兴趣等缺点，为了提升学生学习兴趣，更好的培养高职学生的综合职业能力，本文采用了行动导向教学法对该课程从教学内容、教学评价、教学组织等方面进行了改革，实践证明，取得了明显的教学效果。

关键词： 传感器   传感器技术   发展   电子领域  

摘要： 科技发展的脚步越来越快,人类已经置身于信息时代。而作为信息获取最重要和最摘要基本的技术——传感器技术,也得到了极大的发展。传感器信息获取技术已经从过去的单一化渐渐向集成化、微型化和网络化方向发展,并将会带来一场信息革命。现从传感技术发展、在电子领域的意义、未来展望等方面分析研究传感器技术。

摘要： The paper focuses on presenting data obtained from spin test experiments of a turbine engine like rotor disk and assessing their correlation to the development of a structural health monitoring and fault detection system. The data were obtained under various operating conditions such as the rotor disk being artificially induced with and without a notch and rotated at a rotational speed of up to 10,000 rpm under balanced and imbalanced state. The data collected included blade tip clearance, blade tip timing measurements, and shaft displacements. Two different sensor technologies were employed in the testing: microwave and capacitive sensors, respectively. The experimental tests were conducted at the NASA Glenn Research Center's Rotordynamics Laboratory using a high precision spin system. Disk flaw observations and related assessments from the collected data for both sensors are reported and discussed.

关键词： Ground Reaction Force   Shoulder Arthroplasty   Telemetry System   Joint Force   Anterior Cruciate Ligament Transection  

摘要： Stresses and strains are major factors influencing growth, remodeling and repair of musculoskeletal tissues. Therefore, knowledge of forces and deformation within bones and joints is critical to gain insight into the complex behavior of these tissues during development, aging, and response to injury and disease. Sensors have been used in vivo to measure strains in bone, intraarticular cartilage contact pressures, and forces in the spine, shoulder, hip, and knee. Implantable sensors have a high impact on several clinical applications, including fracture fixation, spine fixation, and joint arthroplasty. This review summarizes the developments in strain-measurement-based implantable sensor technology for musculoskeletal research.