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压力传感技术设计上的最新成就是使压力传感器不需另外的有源部件就可直接与A/D变换器接口。这种可能性是通过在一个模块上集成一个温度补偿压力传感元件和有源线性电路来提供的。这里通过介绍一个测量板来表示将一个信号调节压力传感器与一个A/D变换器接口的方便性。 相似文献
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Tekscan压力分布测量系统 总被引:8,自引:0,他引:8
介绍一种先进的压力分布测量系统,该系统使用独特的柔性薄膜网格压力传感器,能够对任何触面之间的压力分布进行动态测量,并以直观、形象的二维、三维彩色的图形显示压力分布的轮廓和数值,进而做出评估。 相似文献
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基于LabVIEW虚拟仪器开发平台,设计了一套28GHz毫米波在无线信道环境下的多参量自动化测量系统,并且在系统中加入了温湿压传感模块。硬件系统采用Keysight公司的矢量信号发生器E8267D和信号分析仪N9010A,通过通用接口总线(General-Purpose Interface Bus, GPIB)转通用串口总线(Universal Serial Bus, USB),与笔记本电脑连接,LabVIEW编写仪器支持的标准命令语言(Standard Commands for Programmable Instruments, SCPI)控制仪器,实现测量系统自动化测量。实际测量结果表明系统运作良好,敏感度高,自动化获取测量信道环境温湿压数据、实时显示波形曲线、自动保存数据。该系统实现了对无线信道环境的实时监控及无线信道多参量的统计,具有很好的实际应用价值。 相似文献
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从电容式压力传感器的结构、环境适应性、介质相容性、产品性能及测量范围等方面,较全面阐述可变电容压力测量技术的特点。并以国外典型产品为例,说明该类传感器在很宽的压力测量范围(0~25Pa至0~70MPa)内能以百万分之一的高分辨率实现高精度测量。 相似文献
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针对机器人感知系统应用,基于IEEE1451.2标准及其修订建议,设计了以C8051F040为核心的智能变送器接口模块STIM。STIM的电子数据表单TEDS的设计是在IEEE1451.2标准的基础上,结合了机器人传感器应用的特殊情况,在实现Meta TEDS和Channel TEDS的同时,设计了终端用户特殊应用TEDS的用户数据格式及其定义,并基于可扩展标记语言XML,实现虚拟TEDS,使用微软XML解析器接口DOM和SAX,实现了STIM的TEDS文件的可视化自动配置以及应用编程接口API和DLL。最后,针对基于CAN2.0B实现的变送器独立接口TII,给出了具体的协议实现。 相似文献
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Richard W. Marklin Lia Lazuardi Jeremy R. Wilzbacher 《International Journal of Industrial Ergonomics》2004,34(6):497-506
Overhead and underground line work in the electric power industry is physically very strenuous and can expose workers to musculoskeletal disorders (MSDs), particularly in the upper extremity. Crimping compression connectors—such as sleeve connectors and lugs—and cutting cables are two of the most frequent tasks that line workers perform. Line workers at many utilities in the US crimp connectors and cut cable with long-handled manual tools. However, the actual magnitude of the forces applied to the handles of these tools is not known. The objectives of this laboratory study were to measure the forces applied to the handles of a manual press and a manual cutter in order to connect typical wire gauges and cut common cables, respectively. The handles of the manual press and cutter were attached to the drive cylinder and load cell of an Instrom Material Testing System, and peak forces exerted against the handles were measured. Results showed that the outer die of the manual press required about 50% more handle force than crimping connectors with the inner die location. The peak handle forces required to cut aluminum conductor cable as large as 2 cm diameter exceeded 500 N and were about 200 N greater than the peak forces to compress connectors manually. When the peak force data were compared to strength capabilities reported in the literature, less than 1% of the general population was found to have the maximum strength to manually make one crimp on a common overhead connector. Less than 1% and approximately 50% of the female and male general population, respectively, were found to have the maximum strength to manually cut a cable with a 2 cm diameter conductor. Handle force data from this study provide a biomechanical framework for explaining how the job demands of overhead and underground line workers could possibly cause MSDs.
Relevance to industry
Electric power utilities can review their work practices and tools in order to determine whether they can reduce the exposure of their workers to risk factors of MSDs, as well as reduce their cost of health care. Manufacturers of crimping and cutting tools can use the experimental approach in this study to measure the external forces required for their respective tools and then set quantitative force benchmarks to improve the design of their tools. 相似文献
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网络传感器接口设计与验证 总被引:2,自引:0,他引:2
以ADuC812微控制器为核心,依据网络智能传感器接口标准IEEE 1451.2,探索了智能传感器接口模块(STIM)的设计思想与实现方法,用PC机编制程序实现网络匹配处理器(NCAP)的功能,在线存储、修改电子数据表单(TEDS),实现传感器/执行器的即插即用。 相似文献
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基于J2EE的柔性医疗培训系统设计与实现 总被引:1,自引:0,他引:1
由于软件应用环境的剧烈变化,要求应用系统具有较大的柔性来适应这种变化.而通过对软件设计模式的改进,增加软件结构的灵活性,可以进一步促进应用系统的更广泛应用.在开发医疗培训系统中,通过利用对MVC模式的改进J2EE技术和软系统方法论知识,提高该系统的柔性,从而使整个应用系统更能适应其应用环境的变化. 相似文献
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该文从铂电阻温度传感器Pt100的电阻—温度特性方面分析了其非线性的原因,利用位于现场端的XTR105电流变送器对铂电阻输出信号进行调理并通过正反馈补偿其非线性后,输出工业标准的(4~20)mA电流至监控系统接收端的电流环接收器RCV420进行线性电流-电压转换.此外,还针对工业现场应用中出现的强射频干扰导致测温模块直流输出失调而引起测温误差问题进行了分析,并采用滤波电路滤除射频干扰.实验结果表明,该测温模块能通过一系列电磁兼容性测试,可以满足大部分工业现场应用要求,定标后测量误差不大于0.5 ℃. 相似文献