動車組風(fēng)擋氣密性測試系統(tǒng)設(shè)計

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摘要 動車組在隧道和在明線上交會時, 均會引起車外較大的壓力波動。一般而言, 動車組通過隧道所產(chǎn)生的壓力波動比明線上兩列動車組交會所產(chǎn)生的壓力波要大。車外壓力波動傳入車內(nèi)會引起空氣壓力波動,從而沖擊司乘人員的耳膜, 造成耳鳴、耳痛等, 帶來動車組內(nèi)壓力舒適度問題。減緩車內(nèi)壓力波動的主要措施之一是采用氣密性能良好的車輛。這就帶來了如何評價車輛氣密性的問題。
風(fēng)擋、渡板位于客車車體端部, 是構(gòu)成通過臺的主要部件。通過臺是車輛之間相互連接的通道和旅客進出的必經(jīng)之路, 必須保證其安全。其中, 風(fēng)擋為關(guān)鍵部件, 技術(shù)含量比較高, 為主要研究對象。
為了能夠有效準(zhǔn)確的測量出動車風(fēng)擋氣密性，本文介紹了在實驗室中通過硬件的搭設(shè)，經(jīng)過氣動裝置，對風(fēng)擋部件進行充壓與抽壓，從而模擬出風(fēng)擋在動車高速運行的狀況下，風(fēng)擋內(nèi)部的壓力情況。通過亞當(dāng)模塊對風(fēng)擋內(nèi)部壓強進行抽樣采樣，并通過數(shù)模轉(zhuǎn)換模塊進行A/D轉(zhuǎn)換。通過RS-485總線與計算機相互通信，繼而通過由vb設(shè)計的操作系統(tǒng)程序，對風(fēng)擋內(nèi)部壓力值變化進行測量，并繪出曲線圖，通過excel輸出打印。然后對比國家標(biāo)準(zhǔn)，得出該風(fēng)擋氣密性是否符合國家標(biāo)準(zhǔn)的結(jié)論。整個系統(tǒng)實現(xiàn)對密封風(fēng)擋進行正負壓充壓，壓力值抽樣，數(shù)模轉(zhuǎn)換，軟件自動繪圖，打印輸出等功能。
關(guān)鍵詞：動車組；氣密性；測試；控制


Research and Design of EMU windshield tightness test system

Abstract EMU pass the tunnel and in the intersection next line will cause the vehicle greater pressure fluctuations. Generally, EMU volatility generated by the pressure tunnel large than the pressure wave next two columns online EMU intersection generated. Vehicle pressure fluctuations incoming interior can cause air pressure fluctuations, Thus the impact of the eardrum of staff and passengers, Cause tinnitus, earache, etc., to bring the problems of pressure inside EMU comfort. One of the main measures to mitigate the pressure fluctuations inside the car is good air tightness performance of vehicles using. This leads to problem of how the eva luation of tightness of the vehicle.
Windshield, crossing the plate located at the ends of the coach body is constituted Taiwan's major components. After a pneumatic device 。Through Taiwan is interconnected between the channel and the passenger vehicle only way out. Must ensure their safety. Among them, the windshield is a critical component, technical content is relatively high, as the main object of study.
To be able to effectively and accurately measure out the windshield tightness of EMU, This paper describes the hardware in the lab erection, After a pneumatic device. Stamping and pump pressure parts for windshield. In order to simulate the condition of the motor car windshield high-speed operation, the pressure inside the windshield situation. By the internal pressure of the damper module Adam sample sampled and a / d conversion by converter module. Through the RS-485 bus and the computer communicate with each other, Followed by Operating system program by visual basic, Changes in the value of the internal pressure on the windshield measure. And draw graphs, and printout in excel. And then compared with national standards, Come to the conclusions that the windshield tightness meets national standards. The whole system to achieve positive and negative pressure on the sealing windshield carried stamping pressure sampling, digital to analog conversion, software, automatic drawing, print output function.
Keywords: EMU; Air tightness; tests; Control


目錄
第一章 緒論 1
1.1動車組風(fēng)擋氣密性研究背景 1
1.2 我國現(xiàn)有風(fēng)擋的技術(shù)現(xiàn)狀及特點 2
1.3 論文課題的項目背景 2
1.4 論文研究的主要內(nèi)容 3
第二章 氣密性測試系統(tǒng)的總體結(jié)構(gòu)及原理 4
2.1 總體結(jié)構(gòu)框圖 4
2.1.1基本原理 5
2.2測試系統(tǒng)工作流程 6
2.2.1抽負壓流程 6
2.2.2充正壓流程 7
第三章 氣密性測試系統(tǒng)硬件設(shè)計 7
3.1 ADAM模塊 9
3.2 a/d轉(zhuǎn)換模塊 10
3.3 RS-485總線 10
3.4 繼電器 11
3.5 氣源閥 11
第四章 氣密性測試系統(tǒng)軟件設(shè)計 12
4.1開發(fā)工具的選擇 12
4.2 Visual Basic簡介 12
4.3 VB的發(fā)展史及其特點 12
4.3.1 VB的發(fā)展史 12
4.3.2 VB的特點 13
4.4 vb程序說明 13
4.4.1測試界面程序 14
4.4.2程序設(shè)計窗口界面 17
第五章 測試系統(tǒng)的使用說明及調(diào)試 20
5.1 測試系統(tǒng)的使用說明 20
5.1.1測試系統(tǒng)性能參數(shù) 20
5.1.2測試系統(tǒng)硬件連接 20
5.2 運行調(diào)試結(jié)果 28
第六章 總結(jié)與展望 30
6.1 總結(jié) 30
6.2 展望 30
致謝 31
參考文獻 32