扶梯梯级链长度自动检测系统设计
文中介绍了现有的自动扶梯梯级链长度检测现状的特点和发展，分析了扶梯梯级链长度自动检测系统的功能需求，给出了以适应自动检测的机械结构为基础，以位移测量为测量手段，基于PLC控制技术和无线传输技术的链长度自动检测系统方案设计。对现有的自动扶梯梯级链长度的功能需求进行分析，
本文介绍了该方案中的机械系统设计方案，其中，测量机构的设计依据链长度测量原理，在国家标准指定的测量条件下进行，通过液压缸驱动模拟人工测量操作自动完成检测动作，包括被测链条的初定位和精定位。
本文还介绍了长度测量值的自动分析与处理，包括信号的传输、调理与显示，同时制作了其软件流程图。
毕业论文关键词：梯级链；长度检测；ZigBee模块；自动测试
Abstract
Escalator step chain is an essential part of the composition of the escalator, and always used in pairs escalator step chain, it is necessary to ensure that the length error of two step chain within a certain range, otherwise escalators job stability, reliability, etc. Performance can not be guaranteed. Hence the need to measure its length, so that the assembly can be a reasonable choice of the escalator when the two chains.
This paper describes the current status of the escalator step chain length detection characteristics and development, analysis of the functional requirements of the escalator step chain length automatic detection system, gives to adapt automatically detect mechanical structure as the basis, to measure the displacement measuring means based chain length PLC control technology and wireless transmission technology automatically detects system design. Existing escalator step chain length of functional requirements analysis,
This article describes the program in mechanical system design, which is designed according to the chain length measuring principle measuring mechanism, specified in the national standard measurement conditions, driving simulation artificial measuring operation is completed by a hydraulic cylinder automatic detection operation, including test First chain positioning and fine positioning.
Additionally, this article describes the automatic analysis and processing length measurements, including the transmission of the signal conditioning and display, while making its software flow chart.
Keywords：Cascade chain；Length detection；ZigBee module；Automatic test
目 录
摘要 Ⅰ
Abstract Ⅱ
1 绪论 1
1.1 本课题的研究背景与意义 1
1.2 国内外发展现状 2
1.2.1 自动扶梯及梯级 2
1.2.2 位移测量 4
1.2.3 信号传输网络 4
1.2.4 长度检测及其存在的问题 8
1.3 本章小结 9
2 总体方案设计 10
2.1 测量方案综述 10
2.2 总体技术路线 11
2.3 本章小结 11
3 机械结构设计 12
3.1 机械系统设计的原则与要求 12
3.1.1 机械系统设计的基本准则 12
3.1.2 机械系统设计的具体要求 12
3.2 机械结构设计方案 13