The Public Address System For Passenger Based On Intelligent Management And Network Technology

Passenger address system referring to digital audio technology and network technology to provide information to travelers PA system. With the national railway, Urban Mass Transit accelerated pace, and people on the spiritual life demands continuous improvement, in the journey of the passenger have become increasingly demanding of address system's broadcast content, voice clarity, and voice quality. Currently, most railway stations'PA system is analog broadcasting system, due to its own limitations, such as poor sound quality, and system upgrade and expansion difficulties, has been excluded from the market. The proposed passenger address system isThis paper period passenger address system is based on the intelligent management and network technology. Studied this subject as follows:1) According to the user's needs, Modularization, proposed overall program solutions of passenger broadcast system;2) Details of the hardware platform to achieve the demand structure, which adds automatic detection system implemented on the device monitoring and management, improve equipment reliability;3) In the management of terminal design business platform and control platform, can achieve passenger PA system's functions, such as division radio, power amplifier testing and speaker detection circuit, and can display the actual operating state, to facilitate the user about the operation of the equipment and management of them. The platform has been developed using Microsoft Visual Basic 6.0 and Microsoft SQL Server 2000 database, the combination of the generated user interface simple and friendly, easy to handle operation, so that more powerful radio, broadcast sources enriched, added to the passenger journey pleasure.4) Completed by CobraNet technology of digital audio data network transmission and the EASE that is sound field simulation of software design based electro-acoustic. CobraNet is a network technology for transfering multiple high-quality digital audio signals without compression, which combines hardware, software and communication protocol as a whole, solution to the network transmission delay problem.Intelligent management of this system is said that the working status of each device will be all the focus to an integrated business management platform to achieve real-time monitoring of equipment. If equipment was failure, then it send alarm signals and the software interface highlight the point of failure and fault information to the operator control equipment operating conditions and their management. Network technology is said that the transmission of audio signals are digital technology, just a network cable or a cable system can replace numerous analog audio cable root, and wires can also increase the transmission monitoring information, greatly reducing the wiring design and cable laying by the cost of manpower and material whole system commissioning and maintenance as it becomes easier. In addition, as fiber optic cable for a variety of electromagnetic interference and radio frequency interference with immune properties, so we can get high quality transmission. Therefore, the research of passenger address system based on intelligent management and network technology is significant, it will provide passengers with better service, and rail and urban rail transport management provides better conditions.1) Through the efforts of more than one year to complete some works as following:2) Have completed software design of front-end interfaces, include two platforms interface and internal function module design and implementation.3) Have completed program and interface design of system login and password changes.4) Have completed design and simulate of sound field effect.5) Initial achieved transmission of audio information base on CobraNet technology.6) In system debugging phase, I am in charge of testing works of hardware platform.7) Participate discuss of system design and hardware circuit design and testing.