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针对实际安全监控系统中多目标布控传感器器件存在的多选择性问题,设计了一种以CA3083集成电路为核心器件的多路安全监控系统。该系统整体结构为模块化设计,由用户根据不同监控现场的特征与需求,自行选择相应传感器模块作为检测传感头,同时采用安全性极强的新型TH9736/TH9738系列滚动式编解码无线电发射与接收模块遥控操作,并选取普通手机作为远程无线通讯工具,配以低成本的外围电路设计进而实现了多地点监控。本系统具有现场防盗报警、远程无线监控、现场人员求救、视频监控、解警等功能。该设计结构简单,安装灵活,性能可靠,不失为安全监控领域内一种较为理想的选择。 相似文献
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基于IP无线视频监控系统的设计与应用 总被引:1,自引:0,他引:1
视频监控技术在施工过程中具有十分重要的作用,可对施工现场重要目标进行集中监控,使管理指挥部门实时了解现场情况.确保施工现场安全保质高效。本文以500kV变电站施工监控为例,阐述了基于IP无线视频监控系统的设计、实施过程以及效果,对施工过程中视频监控技术的应用有一定的借鉴意义。 相似文献
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井下通风设备监控系统采用单片机控制、总线挂接式结构,通信方式为CAN现场总线,配合各种智能传感器,自动监控井下通风设备运行情况,该系统提高了井下安全生产的可靠性,避免了因通风设备故障造成井下安全事故的可能性。 相似文献
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《自动化仪表》2019,(9)
针对直接空冷机组空冷岛规模庞大、难以实现温度和风速大规模测量的问题,设计了一套空冷岛动态参数监测系统。对空冷岛的测点进行优化布置,并详细介绍了硬件系统和软件系统。在空冷岛上安装搭载有温度和风速传感器的实时移动监测装置,并采用传感器技术,对现场数据进行采集和传输。选取IFIX作为上位机监控软件,使用OPC技术来实时监测和管理空冷岛的相关动态参数,使整个监控过程可视化。上述监测系统基本实现对现场数据的釆集、处理和监控功能,为直接空冷系统的防冻预警、安全运行和空冷岛空气侧的场分布提供可靠的数据依据,对全面、准确把握直接空冷系统的运行状态、提高电厂的安全经济运行具有重要意义。 相似文献
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Statistical process monitoring and control has been popularized in manufacturing as well as various other industries interested in improving product quality and reducing costs. Advances in this field have focused primarily on more efficient ways for diagnosing faults, reducing variation, developing robust design techniques, and increasing sensor capabilities. However, statistical process monitoring cannot address the need for instant variation reduction during assembly operations. This paper presents a unique dimensional error-compensation approach for compliant sheet metal assembly processes. The resulting autonomous self-correction system integrates rapidly advancing data mining methods, physical models, assembly modeling techniques, sensor capabilities, and actuator networks to implement part-by-part dimensional error compensation. Inspired by biological systems, the proposed quality control approach utilizes immunological principles as a means of developing the required mathematical framework behind the self-correcting methodology. The resulting assembly system obtained through this bio-mimicking approach will be used for autonomous monitoring, detection, diagnosis, and control of station and system level faults, contrary to traditional systems that largely rely on final product measurements and expert analysis to eliminate process faults. 相似文献
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传统的塔筒倾覆在线监测系统往往存在数据采集、分析单一、非专业人员很难看懂和理解、运维管理模式落后等缺陷,为了解决这些问题,本文通过研究人工智能技术,综合塔筒倾斜、基础水平、风速、风向、功率等关联信息,运用机器学习算法构建塔筒倾覆故障模型,计算反映设备状态的模型特征值,检测模型特征值的变化趋势,实现塔筒倾覆状态的在线检测和劣化过程的早期预警。同时本文还重点介绍了基于人工智能的风机塔筒倾覆智能预警系统建设目标、系统架构、诊断流程和系统开发平台,通过此系统不断提高对数据挖掘技术的能力,对风机健康状况进行更为精准的判定及故障隐患的及时发现,保障风机基础和塔筒的安全运行,防止风机发生倾斜或倒塌等重大安全生产事故。 相似文献
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随着机动车保有量的高速增长,停车混乱问题日益严重,各大中城市对停车实时监控及管理有迫切的建设需求。为了构建基于无线传感器网络的大规模、低成本、低功耗的停车管理系统,本文基于磁场干扰车辆检测原理,提出了一种停车检测算法,实际应用表明该算法车辆检测精度高,达到了设计要求。 相似文献
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大型起重转载设备稳定性监测 总被引:1,自引:0,他引:1
为了实现大型起重转载设备工作过程的安全监测,提出采用测量液压支腿受力的方法来判断起重转载设备整车稳定性的方案,设计了大吨位、小尺寸、高精度的新型称重传感器,并给出了起重臂的方位角、工作幅度的测定方法。该方案不仅能代替力矩限制器对起重转载设备的安全监测,并可普遍运用于类似起重设备的安全监测。 相似文献
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鉴于传统经纬仪测量方法检测塔机垂直度存在诸多弊端,提出一种基于全球卫星导航系统(Global navigation satellite system,GNSS)的建筑塔机垂直度全圆智能检测技术。基于GNSS的动态检测模型,设计一种建筑塔机垂直度全圆智能检测方法,并基于Visual Studio 2017平台,利用C#编程语言,设计并开发一种基于GNSS的建筑塔机垂直度全圆智能检测系统(GNSS-based verticality intelligent detection system in rounds, GNSS_VDS)。实验结果表明:GNSS_VDS系统全圆智能检测水平精度优于3 cm、高程精度优于4 cm,本文算法是行之有效的,可为建筑塔机抗倾翻稳定性实时监测提供一种高精度智能化解决方案。 相似文献
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Shiyu Zhou Baocheng Sun Jianjun Shi 《Automation Science and Engineering, IEEE Transactions on》2006,3(1):60-72
Due to the rapid development of computer and sensing technology, many measurements of process variables are readily available in manufacturing processes. These measurements carry a large amount of information about process conditions. It is highly desirable to develop a process monitoring and diagnosis methodology that can utilize this information. In this paper, a statistical process control monitoring system is developed for a class of commonly available process measurements-cycle-based waveform signals. This system integrates the statistical process control technology and the Haar wavelet transform. With it, one can not only detect a process change, but also identify the location and estimate the magnitude of the process mean shift within the signal. A case study involving a stamping process demonstrates the effectiveness of the proposed methodology on the monitoring of the profile-type data. Note to Practitioners-Cycle-based signal refers to an analog or digital signal that is obtained through automatic sensing during each operation cycle of a manufacturing process. The cycle-based signal is very common in various manufacturing processes (e.g., forming force in stamping processes, the holding force, and the current signals in spot welding processes, the insertion force in the engine assembly process). In general, cycle-based signals contain rich process information. In this paper, cycle-based signal monitoring will be accomplished by monitoring the wavelet transformation of the signal, instead of monitoring the raw observations themselves. Further, a decision-making technique is developed using the SPC monitoring system to locate where the mean shift occurred and to estimate magnitudes of mean shifts. Thus, this paper presents a generic framework for the enhanced statistical process control technique of cycle-based signals. 相似文献
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在高压输电塔的锚杆顶端施加一瞬态激振力,由布设在锚杆顶端的声发射传感器接收反射的信号.对接收的声发射信号进行了时频分析和小波分析.通过对比可以看出,声发射信号的特征频率、能量与腐蚀的状况有很好的相关性.因此,声发射技术是一种可靠有效的检测高压输电塔锚杆腐蚀的方法. 相似文献
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Nafari A. Karlen D. Rusu C. Svensson K. Olin H. Enoksson P. 《Journal of microelectromechanical systems》2008,17(2):328-333
Here, we present a MEMS atomic force microscope sensor for use inside a transmission electron microscope (TEM). This enables direct in situ TEM force measurements in the nanonewton range and thus mechanical characterization of nanosized structures. The main design challenges of the system and sensor are to reach a high sensitivity and to make a compact design that allows the sensor to be fitted in the narrow dimensions of the pole gap inside the TEM. In order to miniaturize the sensing device, an integrated detection with piezoresistive elements arranged in a full Wheatstone bridge was used. Fabrication of the sensor was done using standard micromachining techniques, such as ion implantation, oxide growth and deep reactive ion etch. We also present in situ TEM force measurements on nanotubes, which demonstrate the ability to measure spring constants of nanoscale systems. 相似文献