A full-featured digital-analog hybrid intelligent broadcasting system for trains

Abstract

The invention discloses a full-function digital-analog hybrid intelligent broadcast system for trains. The full-function digital-analog hybrid intelligent broadcast system mainly comprises broadcast consoles, broadcast master controllers, broadcast passenger room controllers, a digital communication network, an analog communication network and various power amplifier devices. The digital communication network is an Ethernet, the analog communication network comprises a UIC (international union of railways) 568 bus, the Ethernet is connected into CPUs (central processing units) of the broadcast passenger room controllers via network modules, the UIC568 bus is connected onto the CPUs of the broadcast passenger room controllers by sampling A / D (analog / digital) modules, the CPUs of the broadcast passenger room controllers monitor working 'heartbeat' signals of other devise in the system, and whether the total system in a current working mode fails or not is judged on the basis of the 'heartbeat' signals. According to the technical scheme, the full-function digital-analog hybrid intelligent broadcast system for the trains has the advantages that the broadcast system can run in the digital communication network and the analog communication network in a full-function manner, priorities of the networks can be self-defined, failures of the networks can be judged, and the networks can be voluntarily switched over.

Description

technical field [0001] The invention belongs to the field of high-speed train broadcasting and subway broadcasting systems, and in particular relates to a full-function digital-analog hybrid intelligent broadcasting system for trains. Background technique [0002] The broadcast system is an important part of the train passenger information system. It provides functions such as station information broadcast, station information display, manual broadcast, manual intercom, and emergency intercom in emergency situations during train operation. From the perspective of application , played a very important role. Currently, broadcasting systems on the market often only use digital network Ethernet or analog network architecture to realize system functions. Although the functions of broadcasting systems can be realized, in terms of system architecture design, it is difficult to In an emergency environment, once the network fails, it can only achieve partial functions, with low relia...

AI Technical Summary

Problems solved by technology

[0002] The broadcast system is an important part of the train passenger information system. It provides functions such as station information broadcast, station information display, manual broadcast, manual intercom, and emergency intercom in emergency situations during train operation. From the perspective of application , played a very important role. Currently, broadcasting systems on the market often only use digital network Ethernet or analog network architecture to realize system functions. Although the functions of broadcasting systems can be realized, in terms of system architecture design, it is difficult to In the emergency environment, once the network fails, it can only realize some functions, with low reliability, single structure and poor adaptability

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