工业防护光幕设计与可靠性策略研究

发布时间：2018-04-25 18:43

本文选题：光幕 + 红外发射　；参考：《广东工业大学》2013年硕士论文

【摘要】：近年来,随着国内经济及工业产业的发展,人们对生产安全的要求也越来越高,生产设备的防护装置安全性与可靠性的要求不断的提高。但国内的安全防护装置一般安全性、可靠性不够高,且功能单一,较难满足国内工业化对安全的要求。工业防护光幕用于实现对检测范围内的安全检测及安全控制,具有外部结构简单、分辨率高、可靠性强等特点,常在各种人机交互的工业生产设备中作为防护装置。可靠性工作存在于光幕设计、布局、元器件选型与制造等各个环节。需要综合处理系统本身功能及环境各种因素对系统的影响,才能保证光幕长时间具有高可靠性。本文以工业防护光幕系统为研究对象,根据可靠性设计的特征,对系统核心模块及系统整体的可靠性进行了研究。研究内容主要分为五部分：第一部分综述了国内外安全防护光幕技术的发展及应用现状,分析高可靠性的光幕重要性,提出进一步提高系统性能及技术指标的思路；第二部分叙述了光幕的基本原理及可靠性策略,给出相应的理论基础及提高方法；第三部分详细分析了系统硬件设计,从各模块具体设计到元件选型,提高抗干扰技术与故障检测的技术设计等；第四部分叙述了光幕系统的软件系统设计与实现；第五部分为系统制定并执行了可靠性试验,对其过流保护、浪涌抗扰度及环境应力筛选试验等进行比较全面的试验,并进行相应的性能测试,实验表明本文提出的可靠性设计方案符合设计要求。本文通过对系统可靠性建模,实现基于模糊可靠性设计的可靠性分配。使用双回路冗余系统控制,解决了信号接收和控制与检测及信息回馈之间的矛盾,提高了系统的实时性及稳定性,并对关键模块具有故障检测功能。通过对电路系统降额设计、冗余设计、屏蔽滤波及电磁兼容设计,提高了系统性能与对环境应力的能力。通过测试表明,基于红外技术的工业防护光幕系统的可靠性、灵敏度、相应时间等都有明显提高,且能够为使用人员提供更合理的更人性的服务,其实验及结果都达到了设计要求和目的。
[Abstract]:In recent years, with the development of domestic economy and industrial industry, the requirement of production safety is higher and higher. However, the domestic safety protection devices are generally safe, reliability is not high enough, and the function is single, so it is difficult to meet the safety requirements of domestic industrialization. Industrial protective light screen is used to realize safety detection and safety control in the range of detection. It has the characteristics of simple external structure, high resolution and strong reliability. It is often used as a protective device in various kinds of man-machine interactive industrial production equipment. Reliability work exists in light screen design, layout, components selection and manufacturing and other aspects. In order to ensure the high reliability of the light screen, it is necessary to comprehensively deal with the system's own function and the influence of various environmental factors on the system. In this paper, the system core module and the whole system reliability are studied according to the characteristics of reliability design, taking the industrial protection light screen system as the research object. The research contents are divided into five parts: the first part summarizes the development and application status of light screen technology of safety protection at home and abroad, analyzes the importance of high reliability light screen, and puts forward some ideas to further improve the system performance and technical index; The second part describes the basic principle and reliability strategy of the light screen, and gives the corresponding theoretical basis and improving method. The third part analyzes the hardware design of the system in detail, from the specific design of each module to the selection of the components. The fourth part describes the design and implementation of the software system of the light screen system, the fifth part formulates and executes the reliability test for the system, and gives the over-current protection to the system. The screening tests of surge immunity and environmental stress were carried out and the corresponding performance tests were carried out. The experimental results show that the reliability design scheme proposed in this paper meets the design requirements. In this paper, reliability allocation based on fuzzy reliability design is realized by modeling system reliability. The double loop redundancy system is used to solve the contradiction between signal receiving, control, detection and information feedback. It improves the real-time and stability of the system, and has the function of fault detection to the key modules. The performance of the system and its ability to environmental stress are improved by the design of reducing the amount of the circuit system, the redundancy design, the shielding filtering and the electromagnetic compatibility design. The test results show that the reliability, sensitivity, corresponding time and so on of the infrared technology based industrial protective light screen system are obviously improved, and it can provide more reasonable and more human service for the users. Both the experiment and the results meet the design requirements and objectives.
【学位授予单位】：广东工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：X924.4

【参考文献】