Wireless dispatching system of IP (internet protocol)-based digital train

Abstract

The invention provides a wireless dispatching system of an IP-based digital train, which integrates various functions. The system is divided into a business layer, a control layer, a transport layer and an access layer, wherein the transport layer is a railway dispatching IP private network; the access layer comprises a dispatch switchboard connected onto the IP private network through an FE (fast Ethernet) interface, a relay gateway, a plurality of dispatching desks and a plurality of radio stations, and the radio stations are connected with a station control box through FE interfaces and transmit wireless signals to a locomotive radio station and portable stations through Ethernet exchange; the control layer adopts soft switch equipment or VoIP gateway equipment; and the business layer comprises various expansion servers, is hung on the IP network and provides expansion services. With the adoption of the wireless dispatching system of the IP-based digital train, not only is the speech quality improved, but also the systemic reliability is improved greatly; and moreover, the station administering capacity of the dispatch switchboard is improved, and the system can administer no less than 100 stations.

Description

technical field [0001] The invention relates to the field of railway train dispatching communication systems, in particular to an IP-based digital train wireless dispatching system. Background technique [0002] The traditional analog wireless train dispatching system includes dispatching switchboard (including dispatching station), monitoring switchboard, station radio station, dispatching command adapter, train number decoder ground equipment, portable station and other equipment; the system adopts the combination of wired and wireless The dispatching station is equipped with a dispatching switchboard, which forms a wired channel with the station radio station through the four-wire audio co-line interface provided by the digital transfer system; each car station and the interval equipment use space waves to form the communication between the station attendant and the driver; the dispatcher passes The wired and wireless switching extension installed at the station contr...

AI Technical Summary

Problems solved by technology

[0004] (1) The dispatching station and the station adopt a four-wire audio common-line connection, which is easily affected by the loss of the analog line, which will easily lead to a serious decline in call quality;

[0005] (2) Between the dispatching station and the dispatching switchboard, the voice transmission of the station control box and the station radio station mainly adopts analog transmission. Because the analog line adopts traditional telephone line transmission, it is easily affected by external interference, such as microwave, electromagnetic, etc., and is easily affected by others. There are shortcomings such as monitoring and control, and there are potential safety hazards;

[0006] (3) The equipment of the dispatching station is affected by the hardware of the dispatching station and the analog lines. One dispatching switchboard can govern 20 to 30 stations at most, and the capacity of the stations under the jurisdiction of the dispatching station equipment is limited;

[0007] (4) The station platform does not have the functions of wireless train number reception, decoding, transmission and scheduling command information transfer, and a set of independent DMIS equipment needs to be added

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