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以压缩机为监测对象提出了由数据采集模块、状态监测模块和故障诊断模块组成的分布式信息处理系统的构思,阐明了基于结构层次化和功能模块化的状态监测系统的软、硬件设计方案。整个系统具有高速度、高精度、多通道、大容量和高性能价格比等特点,可广泛应用于各类大型旋转机械的状态监测。 相似文献
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张宏伟 《仪表技术与传感器》2018,(2)
为了实现对电池组工作状态的实时监测,设计了一种高精度、低成本的新型电池组远程监测系统。该系统以MSP430为主控制器,实现浮点数的快速运算、处理和显示功能。硬件部分设计了主控制模块、采集模块、GPRS模块等,主要实现对数据的采集和数据的无线传输功能。实际试验表明,该监测系统能实时有效地监测电池组的工作状态。 相似文献
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4.在线状态监测系统的软件设计 (1)软件总体设计 软件采用模块化设计,主要包括中心调度模块、监测数据库、监测报警模块、故障诊断模块、知识库、趋势分析模块、CAN通讯模块及网络通讯模块等,软件系统的整体结构见图4。中心调度模块负责整个系统工作的调度和控制;监测数据库主要用来存放各信号采 相似文献
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针对当下煤机设备状态监测系统时效性差、通信电缆铺设困难、需要定期更换电池等问题,提出了一种基于无线传感器网络与自供电技术的监测系统设计方法。系统由能量采集模块、无线传感器网络及监测上位机组成,通过能量采集模块收集煤机设备振动能量为节点电路供电,采用无线传感器网络与上位机实现设备关键状态信息的采集、传输与处理。测试结果表明,系统可在30 m有效范围内实现对煤机设备运行状态的实时监测,能量采集模块最大输出功率可达378 mW,能够有效收集设备振动能量实现系统能源自供给。 相似文献
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全液压推土机状态监测及故障诊断系统的研究 总被引:4,自引:0,他引:4
利用RC6-9控制器和DI2/11显示器构建了基于CAN-Bus总线的全液压推土机状态监测和故障诊断系统,介绍了整个系统的结构、功能和软件设计方法,给出了监测模块中需实时显示的被监测参数和故障诊断模块中可被识别的故障类型,达到了提高整机的安全性和可靠性的目的. 相似文献
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传感器故障诊断实时监测系统设计的探讨 总被引:2,自引:1,他引:1
对大型设备运行状态监测和故障的早期诊断与预报活动中,传感器自身故障的及时发现与判别尤为重要。本文提出以设备子系统的(或某一功能的)传感器监测参数为划分原则,将单传感器的监测信号综合作为多传感器监测而进行信息的融合处理,从而判别子系统运行状态和传感器信号的真实性的构思,并探讨传感器故障诊断实时监测系统的设计方案。 相似文献
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针对现有机械状态监测系统体系复杂、使用成本高昂和主要面向高端企业的大型关键设备等问题,提出并开发了一种面向普通设备的低成本微型旋转机械状态监测系统。该系统以Lab-VIEW为开发平台,构建系统功能主体,以SQL Server为操作后台,构建系统管理功能,可实现普通设备轴承、齿轮、转轴的在线与离线监测,满足了普通设备状态监测与健康维护及教学实验环节的需求。 相似文献
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Uncertainty estimation of reliability redundancy in complex systems based on the Cross-Entropy method 总被引:1,自引:0,他引:1
Gui-Bao Wang Hong-Zhong Huang Yu Liu Xiaoling Zhang Zhonglai Wang 《Journal of Mechanical Science and Technology》2009,23(10):2612-2623
The article aims to estimate the uncertainty of possible failure events of redundancy systems based on the cross-entropy (CE)
method. Failure events of subsystems and components always result in the incomplete or complete failure of engineering systems,
yet optimal condition monitoring of a complex system is heavily dependent on the accuracy analysis of all the failure events
of subsystems and components and their interaction effects. The CE method is a versatile tool for estimating probabilities
of rare events in complex systems with the least bias beyond conditional constraints. In this paper we introduce the CE method
for analyzing the system reliability with the highest uncertainty among all possibilities satisfying supplied moment constraints,
and developed numerical CE algorithms capable of estimating the uncertainty of failure modes in an M-dimensional redundancy
system domain with moment constraints of order up to N. A general computational framework of event estimation and condition
monitoring of redundancy systems is illustrated in which the Monte Carlo simulations and CE optimization algorithms are combined.
Numerical results indicate potential improvements in the measure of the uncertainty of redundancy systems that would lead
to the best-fit analysis of all the complete or incomplete failure events. 相似文献
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P.-C. Tseng W.-C. Teng 《The International Journal of Advanced Manufacturing Technology》2004,24(5-6):404-414
Tool condition monitoring systems play an important role in a FMS system. By changing the worn tool before or just at the time it fails, the loss caused by defect product can be reduced greatly and thus product quality and reliability is improved. To achieve this, an on-line tool condition monitoring system using a single-chip microcomputer for detecting tool breakage during cutting process is discussed in this paper. Conventionally, PC-based monitoring systems are used in most research works. The major shortcoming of PC-based monitoring systems is the incurred cost. To reduce costs, the tool condition monitoring system was built with an Intel 8051 single-chip microprocessor and the design is described in this paper. The 8051 tool monitoring system uses a strain gauge for measuring cutting force; according to the force feature, the tool monitoring system can easily recognize the breakage of the cutting tool with its tool breakage algorithm. The experimental results show that the low-cost 8051 tool monitoring board can detect tool breakage in three successive products successfully. 相似文献
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The use and application of ferrography and associated analytical techniques for machinery condition monitoring are outlined.Specific application to contamination control in hydraulic systems is discussed: contamination in very clean systems is compared with satisfactorily operating equipment from the general engineering field. Results from an automatic particle counter are compared with a direct reading Ferrograph and a preliminary relationship between the two entirely different particle measuring and counting techniques is discussed.Ferrography can be used to detect operational differences between machines operating under apparently identical conditions and to identify wear and contaminant particles and is an effective technique for the condition monitoring of hydraulic systems. 相似文献
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为了解决熔断器自动化生产中由于不同厂商设备组成的各个子系统之间的通信问题,采用了OPC技术设计了熔断器自动化生产监控系统,从而实现了每个工序设备之间的连锁,以及单台设备工控机之间的通信。经运行验证,基于OPC技术实现的熔断器自动化生产监控系统运行稳定可靠,该技术具有一定的推广价值。 相似文献
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Xiaohu Chen Wenfeng Wu Hangong Wang Yongtao Zhou 《Frontiers of Mechanical Engineering in China》2010,5(1):106-110
This paper mainly presents a distributed monitoring and diagnosis system for the hydraulic system of construction machinery
based on the controller area net (CAN) field bus. The hardware of the distributed condition monitoring and fault diagnosis
system is designed. Its structure including the sensors, distributed data acquisition units, central signal processing unit,
and CAN field bus is introduced. The software is also programmed. The general software design and its realization are studied
in detail. The experiments and applications indicate that the distributed condition monitoring and fault diagnosis system
can effectively realize its function of real-time online condition monitoring and fault diagnosis for the hydraulic system
of construction machinery. 相似文献
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This paper mainly presents a distributed monitoring and diagnosis system for the hydraulic system of construction machinery based on the controller area net (CAN) field bus. The hardware of the distributed condition monitoring and fault diagnosis system is designed. Its structure including the sensors, distributed data acquisition units, central signal processing unit, and CAN field bus is introduced. The software is also programmed. The general software design and its realization are studied in detail. The experiments and applications indicate that the distributed condition monitoring and fault diagnosis system can effectively realize its function of real-time online condition monitoring and fault diagnosis for the hydraulic system of construction machinery. 相似文献
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物联网环境下的机械系统状态监测技术展望 总被引:1,自引:0,他引:1
论述了物联网环境下机械系统状态监测技术的新发展,指出开展机械系统的可监测性设计是物联网环境下实施机械系统状态监测技术的基础,研发符合物联网特征的在线监测传感器及其系统是物联网环境下开展机械系统状态监测的保证,建立物联网环境下的机械系统状态监测技术标准体系是机械系统状态监测技术快速发展的支撑。 相似文献