本文選題：無線局域網(wǎng)　切入點(diǎn)：乘客信息系統(tǒng)　出處：《華北電力大學(xué)》2013年碩士論文

【摘要】：乘客信息系統(tǒng)（Passenger Information System），簡(jiǎn)稱PIS。是運(yùn)用網(wǎng)絡(luò)技術(shù)和多媒體技術(shù)進(jìn)行信息多樣化顯示的系統(tǒng)。乘客信息系統(tǒng)（PIS），能夠讓乘客在乘車過程中，得到實(shí)時(shí)消息和相關(guān)部門發(fā)布的通知公告以及服務(wù)、娛樂、咨詢信息，同時(shí)信息的雙向傳遞有利于軌道交通管理部門掌握車廂的實(shí)時(shí)動(dòng)態(tài)，更加有針對(duì)性的提供服務(wù)和幫助、處理突發(fā)事件、遏制盜竊犯罪、及時(shí)有效的為乘客提供幫助和服務(wù)。體現(xiàn)了軌道交通部門對(duì)乘客的關(guān)懷，提高了用戶的滿意度、幸福度以及出行效率。 本文分析乘客信息系統(tǒng)的功能需求，研究分析了乘客信息系統(tǒng)的功能結(jié)構(gòu)：控制中心子系統(tǒng)、車站控制子系統(tǒng)、車地?zé)o線子系統(tǒng)、網(wǎng)絡(luò)子系統(tǒng)。本文對(duì)PIS系統(tǒng)中的各系統(tǒng)功能及組成進(jìn)行了細(xì)致的研究，分析設(shè)計(jì)了PIS的各子系統(tǒng)的實(shí)現(xiàn)架構(gòu)，并且完成可以實(shí)際應(yīng)用的乘客信息系統(tǒng)PIS。在實(shí)際應(yīng)用中，，該系統(tǒng)運(yùn)行良好，可以對(duì)指定多媒體信息進(jìn)行編輯、制作、傳輸，并通過車站或車載顯示器，為地鐵乘客提供以列車到離站信息、多媒體信息為主，商業(yè)廣告為輔的綜合信息顯示，具有信息多樣性、實(shí)時(shí)性、可集中控制管理的特點(diǎn)。 由于列車的高速移動(dòng)，在無線局域網(wǎng)中如何保證信息的低延遲、高帶寬、安全性成為研究的焦點(diǎn)。本文對(duì)比分析了常用的無線傳輸標(biāo)準(zhǔn)及組播、MIMO、Mesh、VLAN等常用技術(shù)，研究了帶寬的優(yōu)化方案和技術(shù)、車載AP在區(qū)間的切換方案、抵抗干擾的解決方案、安全保證等方案，并且制定了切實(shí)可行的勘測(cè)方案。通過在項(xiàng)目中的實(shí)際勘測(cè)、對(duì)比、研究得到了可以應(yīng)用在PIS中的滿足列車高速移動(dòng)的無線網(wǎng)絡(luò)。該車地?zé)o線網(wǎng)絡(luò)具有高數(shù)據(jù)傳輸率、切換延時(shí)低、安全性高等特點(diǎn)。在實(shí)際的應(yīng)用中，確保了高清視頻的流暢播放和實(shí)時(shí)數(shù)據(jù)的傳遞。
[Abstract]:Passenger Information system passenger Information system.Is the use of network technology and multimedia technology for the diversity of information display system.The passenger Information system (PISS) enables passengers to receive real-time messages and notices issued by relevant departments, as well as services, entertainment and consultation information, during the ride.At the same time, the two-way transmission of information is conducive to the rail transit management department to grasp the real-time dynamics of the carriage, more targeted to provide services and help, deal with emergencies, curb theft crime, timely and effective to provide help and services for passengers.It reflects the care of the rail transit department to the passengers, and improves the satisfaction, happiness and travel efficiency of the users.This paper analyzes the functional requirements of passenger information system, studies and analyzes the functional structure of passenger information system: control center subsystem, station control subsystem, vehicle-ground wireless subsystem, network subsystem.In this paper, the functions and components of the PIS system are studied in detail, and the implementation framework of each subsystem of PIS is analyzed and designed, and the passenger information system (Pi), which can be applied in practice, is completed.In practical application, the system runs well, and can edit, produce, transmit and provide train to departure information, multimedia information for subway passengers through station or on-board display.The comprehensive information display supplemented by commercial advertisement has the characteristics of diversity of information, real-time, centralized control and management.Due to the high-speed movement of trains, how to ensure the low delay, high bandwidth and security of information in WLAN has become the focus of research.This paper compares and analyzes the commonly used wireless transmission standards and commonly used technologies such as Multicast Mimo / MeshVLAN, and studies the optimization scheme and technology of bandwidth, the switching scheme of on-board AP in the interval, the solution of resisting interference, and the scheme of security guarantee, etc.And made the feasible investigation plan.Through the actual survey and comparison in the project, the wireless network which can be used in PIS to satisfy the high-speed movement of train is obtained.The vehicle-ground wireless network has the characteristics of high data transmission rate, low handover delay and high security.In practical applications, the smooth playback of HD video and the transmission of real-time data are ensured.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：U29-39;TN925.93

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張m

本文編號(hào)：1727015