自动扶梯功能安全系统的研发
发布时间：2019-03-06 19:06
【摘要】：科技发达的现代社会，自动扶梯是车站、商场、地铁等公共场所中必不可少的交通工具，它不仅极大可能地缓解繁忙的交通压力，而且能为社会带来极大的便捷。但随着自动扶梯数量日益增多和技术日新月异的发展，近年各地自动扶梯危险事故呈上升趋势。自动扶梯事故频发，不仅造成了巨大的经济损失，而且对当事人的人身安全伤害十分严重。为了加强自动扶梯的安全性能，国家出台了新标准GB16899-2011《(自动扶梯和人行道制造和安装安全规范》)作为自动扶梯和自动人行道安全运行的基本保证，其中提出可编程电子安全相关系统需要通过专门机构的型式试验。因此，，按照新标准研制一种经济、高性能的自动扶梯功能安全系统具有非常大的现实意义。 论文详细介绍了自动扶梯功能安全系统的研发，系统包含传感器子系统、逻辑子系统和最终组件子系统。其中核心功能安全控制板采用双通道信号采样、双通道逻辑判断和双通道输出的双冗余模式，提高了系统的可靠性。逻辑判断单元采用ARM7内核的LPC2368控制器，根据自动扶梯传感器信号判断其安全性，控制接入安全回路和附加制动器的安全继电器的通断，使得自动扶梯即使发生违背安全功能的事故，功能安全系统也会引导自动扶梯进入安全的故障模式，并且某些故障模式必须在外部手动复位后才能再进入运行正常模式。本系统实现每一安全功能的硬件都通过失效模式、影响及其诊断分析(FMEDA)，通过安全完整性定量分析达到标准SIL2等级。软件按照SIL2软件安全要求规范设计。系统最终通过国家认证机构--上海交通大学电梯检测中心的型式试验。
[Abstract]:In the modern society with advanced science and technology, escalators are indispensable means of transportation in public places such as stations, shopping malls, subways and so on. It can not only ease the busy traffic pressure, but also bring great convenience to the society. However, with the increasing number of escalators and the rapid development of technology, escalator accidents are on the rise in recent years. Escalator accidents occur frequently, not only cause huge economic losses, but also seriously hurt the personal safety of the parties. In order to enhance the safety performance of escalators, the State has introduced a new standard, GB16899-2011 (Safety Code for the manufacture and installation of escalators and sidewalks) as the basic guarantee for the safe operation of escalators and sidewalks. It is pointed out that the programmable electronic safety related system needs to pass the type test of the specialized agency. Therefore, it is of great practical significance to develop an economical and high-performance escalator functional safety system according to the new standard. This paper introduces the research and development of escalator function safety system, which includes sensor subsystem, logic subsystem and final component subsystem. The core function safety control board adopts dual-channel signal sampling, dual-channel logic judgment and double-redundant mode of dual-channel output, which improves the reliability of the system. The logic judgment unit adopts the LPC2368 controller of ARM7 kernel to judge its safety according to the signal of escalator sensor, and controls the switch on and off of the safety relay which is connected to the safety loop and the additional brake. So that even if the accident of violating the safety function occurs, the functional safety system will lead the escalator into the safe fault mode, and some fault modes must be reset manually outside before they can enter the normal operation mode again. The hardware of every safety function in this system is realized by failure mode, influence and diagnosis analysis. The (FMEDA), reaches the standard SIL2 level by quantitative analysis of safety integrity. The software is designed according to SIL2 software safety requirements. The system finally passed the type test of the elevator testing center of Shanghai Jiaotong University.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU857;TP273
本文编号：2435812
[Abstract]:In the modern society with advanced science and technology, escalators are indispensable means of transportation in public places such as stations, shopping malls, subways and so on. It can not only ease the busy traffic pressure, but also bring great convenience to the society. However, with the increasing number of escalators and the rapid development of technology, escalator accidents are on the rise in recent years. Escalator accidents occur frequently, not only cause huge economic losses, but also seriously hurt the personal safety of the parties. In order to enhance the safety performance of escalators, the State has introduced a new standard, GB16899-2011 (Safety Code for the manufacture and installation of escalators and sidewalks) as the basic guarantee for the safe operation of escalators and sidewalks. It is pointed out that the programmable electronic safety related system needs to pass the type test of the specialized agency. Therefore, it is of great practical significance to develop an economical and high-performance escalator functional safety system according to the new standard. This paper introduces the research and development of escalator function safety system, which includes sensor subsystem, logic subsystem and final component subsystem. The core function safety control board adopts dual-channel signal sampling, dual-channel logic judgment and double-redundant mode of dual-channel output, which improves the reliability of the system. The logic judgment unit adopts the LPC2368 controller of ARM7 kernel to judge its safety according to the signal of escalator sensor, and controls the switch on and off of the safety relay which is connected to the safety loop and the additional brake. So that even if the accident of violating the safety function occurs, the functional safety system will lead the escalator into the safe fault mode, and some fault modes must be reset manually outside before they can enter the normal operation mode again. The hardware of every safety function in this system is realized by failure mode, influence and diagnosis analysis. The (FMEDA), reaches the standard SIL2 level by quantitative analysis of safety integrity. The software is designed according to SIL2 software safety requirements. The system finally passed the type test of the elevator testing center of Shanghai Jiaotong University.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU857;TP273
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