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随着产品的环境适应性越来越多的得到社会各界的重视,环境试验设备的性能评价业务量也日渐增长,在针对环境试验设备开展计量评价的各项活动中,既有计量测试仪器存在的局限性也越加凸显,特别是随着对数据可追溯要求的增长,提高测试仪器使用效率、减少计量测试过程中人员操作等人为因素的影响,已成为环境试验活动中被普遍关注的技术问题。本文对一种新型的基于云服务的用于环境试验设备性能参数量值溯源的仪器进行概要介绍。该仪器把互联网云服务与传统的计量测试仪器相结合,实现了计量测试工作的远程操作,降低了计量测试过程中对人员的依赖性,提高了计量测试服务的效率,并具备测试数据的深度分析、展示等功能。 相似文献
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对型号产品生产、试验过程中所用温度试验设备的计量性能特点进行了论述,提出了测量系统整体自校准方法,在有效保证温度溯源需求的同时,降低了校准成本。 相似文献
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在日常的计量工作中,我们发现很多仪器仪表以及试验设备的设计、生产及使用过程中均存在忽视溯源性的问题,主要体现在以下几个方面: 相似文献
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环境试验设备是工程装备研制过程及性能试验中不可缺少的一个重要组成部分。对环境试验设备的定期校准是保证其性能稳定性的重要方法。立足环境试验设备计量现状,分析环境试验设备计量中存在传感器定位布线难、各传感器接口不通一、专用测试软件功能单一、计量效率低的问题,从传感器选型、传感器通用测试支架设计、专用测试软件功能完善、远程计量方面提出了改进和优化措施,设想了全套环境试验设备计量系统方案,以开发出适应新时代的计量系统。 相似文献
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为了解决机载被测设备可测性较低与测试自动化需求较高之间的矛盾,本文提出了基于某型机载通信自动测试系统平台建立智能手动测试系统的思想.同时给出了手动测试解决方案,并在现有自动测试平台上实现了智能手动测试软件的设计与开发. 相似文献
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Different manufacturing environments, such as aerospace, automotive, shipbuilding, and railway, reveal their interest in large scale metrology (LSM) instruments, to provide support in assembly, alignment, inspection, and robot tracking tasks. Notwithstanding different levels of portability, the overall measurement procedure actually involves a direct interaction between the measuring equipment and the operator, as well as a strong dependence on human skills. This paper presents a novel metrological system, scaling down this interaction to a mission management task and aimed at making system performance uniform. The proposed architecture entrusts an unmanned aerial vehicle (UAV) with the task of carrying the sensor equipment and of moving the measuring probe. The design process of the proposed system is detailed and faced with a two-level approach. The first level is directed to identify the available start-up technology, its limitations and sensitivity to the design parameters, while the second level is focused on the experimental testing of a preliminary test-bed to investigate the overall system performance. An actual implementation of the proposed architecture is herein discussed, focusing on system feasibility and presenting some preliminary experimental results. 相似文献
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扭矩是反映轴系传动装置输出功率和评价其工作特性的主要技术指标,通过实时监测输出扭矩可为机械动力设备的可靠运行、故障诊断、安全维护提供有效保障,开展轴系扭矩测量方法研究具有重要意义。本文基于传递法的两大类扭矩测量原理,详细分析了当今研究较为广泛的几种应力(应变)检测型、扭转角检测型扭矩测量方法和传感器结构的工作原理、特点以及存在的问题。结合轴系传动装置自身的特点与发展,认为今后轴系扭矩测量方法应在应变片测量工艺改进、非接触式测量、特殊尺寸轴上测量、数据处理方法和可计量性设计几方面开展进一步研究。 相似文献
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针对温度场测量中使用常规温度传感器引线不方便的缺点,设计了一套无引线温度测量模块。该模块具有测量精度高、无需引线、使用方便的特点。测量模块配接热电阻传感器,利用参考电阻比例测量技术,大大提高了测量稳定性。测量模块采用真空隔热蓄热技术,在-65~200℃温度范围内正常工作不少于2 h,可满足该温区真空试验罐、热压罐,或其他密闭试验装置、大空间实验装置等温度场均匀性测量的需求。 相似文献
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In this paper, the effect of process analyzer selection and positioning on plant-wide process monitoring is investigated. A fundamental problem in process analytical chemistry is the incomparability of different instrument characteristics. A fast but imprecise instrument is incomparable to a slow but precise instrument. Theory is developed to overcome this problem by using an abstract definition of a process analyzer. This definition allows us to put all instrument characteristics for a particular monitoring task on an equal footing. This results in a measurability factor M that expresses monitoring performance of any process measurement by combining instrument characteristics such as precision, sampling rate, grab size, response correlation, and delay time. Both the choice of location and the performance characteristics of different process analyzers can be evaluated using the measurability factor. The unifying nature of the measurability factor allows for a rational decision between completely different process analyzers and locations (Smilde et al., in this issue). The theory is illustrated and validated with an experiment. A tubular reactor for free-radical bulk polymerization of styrene is monitored by in-line short-wave near-infrared spectroscopy at different positions. Alternatively, product samples are collected for at-line near-infrared analysis. Both analyzers measure styrene monomer concentration. The analysis results are used to predict conversion as well as number and weight average molecular mass of the polystyrene reactor product. The theoretical measurability factors for this case study correspond well with the experimental findings. 相似文献
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几何量数字化测量方法与测量装备的发展对制造业影响深远,随着测量任务的多样化与复杂化,对几何量数字化测量方法与测量装备的要求越来越高.本文以现有的典型测量系统为例,根据传感单元工作原理的不同对这些测量系统进行了分类,分别介绍了激光跟踪仪、激光雷达、激光跟踪干涉仪、移动空间坐标测量系统、室内GPS、数字摄影测量系统的数学模... 相似文献
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