【摘要】：科技發(fā)達(dá)的現(xiàn)代社會(huì)，自動(dòng)扶梯是車站、商場、地鐵等公共場所中必不可少的交通工具，它不僅極大可能地緩解繁忙的交通壓力，而且能為社會(huì)帶來極大的便捷。但隨著自動(dòng)扶梯數(shù)量日益增多和技術(shù)日新月異的發(fā)展，近年各地自動(dòng)扶梯危險(xiǎn)事故呈上升趨勢。自動(dòng)扶梯事故頻發(fā)，不僅造成了巨大的經(jīng)濟(jì)損失，而且對(duì)當(dāng)事人的人身安全傷害十分嚴(yán)重。為了加強(qiáng)自動(dòng)扶梯的安全性能，國家出臺(tái)了新標(biāo)準(zhǔn)GB16899-2011《(自動(dòng)扶梯和人行道制造和安裝安全規(guī)范》)作為自動(dòng)扶梯和自動(dòng)人行道安全運(yùn)行的基本保證，其中提出可編程電子安全相關(guān)系統(tǒng)需要通過專門機(jī)構(gòu)的型式試驗(yàn)。因此，，按照新標(biāo)準(zhǔn)研制一種經(jīng)濟(jì)、高性能的自動(dòng)扶梯功能安全系統(tǒng)具有非常大的現(xiàn)實(shí)意義。 論文詳細(xì)介紹了自動(dòng)扶梯功能安全系統(tǒng)的研發(fā)，系統(tǒng)包含傳感器子系統(tǒng)、邏輯子系統(tǒng)和最終組件子系統(tǒng)。其中核心功能安全控制板采用雙通道信號(hào)采樣、雙通道邏輯判斷和雙通道輸出的雙冗余模式，提高了系統(tǒng)的可靠性。邏輯判斷單元采用ARM7內(nèi)核的LPC2368控制器，根據(jù)自動(dòng)扶梯傳感器信號(hào)判斷其安全性，控制接入安全回路和附加制動(dòng)器的安全繼電器的通斷，使得自動(dòng)扶梯即使發(fā)生違背安全功能的事故，功能安全系統(tǒng)也會(huì)引導(dǎo)自動(dòng)扶梯進(jìn)入安全的故障模式，并且某些故障模式必須在外部手動(dòng)復(fù)位后才能再進(jìn)入運(yùn)行正常模式。本系統(tǒng)實(shí)現(xiàn)每一安全功能的硬件都通過失效模式、影響及其診斷分析(FMEDA)，通過安全完整性定量分析達(dá)到標(biāo)準(zhǔn)SIL2等級(jí)。軟件按照SIL2軟件安全要求規(guī)范設(shè)計(jì)。系統(tǒng)最終通過國家認(rèn)證機(jī)構(gòu)--上海交通大學(xué)電梯檢測中心的型式試驗(yàn)。
[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.
【學(xué)位授予單位】：蘇州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU857;TP273

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