Digital communication device and method in use for wireless digital synthetized early-warning system in locomotive

Abstract

A digital communication equipment and method for the integrated radio digital warning system of locomotive features that a 800-MH2 integrated digital radio station with 821.2375 MH2 as receiving frequency and 866.2375 MP2 as transmitting frequency is used. Its advantages are no cross-talking interference, and high transmission power.

Description

technical field [0001] The invention relates to a digital communication device and a method thereof for a wireless digital integrated early warning system of a locomotive. More specifically, the invention relates to an early warning device related to railway driving safety and personal safety. Background technique [0002] In the field of railways, there are multiple tail confirmation devices or detection devices in the prior art, which are used to solve such problems: after the railway freight train cancels the guard (car length), the carriage at the rear of the train is out of joint and the safety of the railway is caused. Major hidden danger. In the Chinese patent document CN 1142454A, a method for confirming the tail of the train is disclosed. The method uses a wind pressure detection device to detect whether the tail of the train is normal. Means are widely used, such as just disclosed such train end device in patent documents CN CN1118319A, CN2124172U, existing train ...

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Problems solved by technology

[0002] In the field of railways, there are multiple tail confirmation devices or detection devices in the prior art, which are used to solve such problems: after the railway freight train cancels the guard (car length), the carriage at the rear of the train is out of joint and the safety of the railway is caused. major hidden danger

In the Chinese patent document CN 1142454A, a method for confirming the tail of the train is disclosed. The method uses a wind pressure detection device to detect whether the tail of the train is normal. Means are widely used, such as just disclosed such train end device in patent documents CN CN1118319A, CN2124172U, existing train tail wind pressure alarm device (as the ZTF-2002 type that currently exists in China, CP-3 type train tail device ) has many functions, such as displaying the wind pressure value at the rear of the train, automatically detecting the leakage of the air duct, prompting the complete arrival of the whole train, and the "black box" data recording function, etc., but most of these alarm devices are connected to the wireless train dispatcher. On the 450MHz channel, the train dispatching channel is used to carry out remote control and telemetry to the host of the train end device. In recent years, although some methods to overcome interference (such as two-way data transmission) have been adopted, the problems of co-frequency interference and mutual interference with wireless train dispatching It still exists, and the problem is particularly serious in the busy marshalling yards and section stations; in addition, in the weak field strength coverage area, the existing device cannot guarantee normal data transmission between the head and tail of the train, so that the current wind pressure alarm at the tail of the train The equipment cannot be used in sections with double tracks and poor propagation conditions; moreover, such equipment can only provide a wind pressure alarm signal at the rear of the train, but does not have other early warning functions about train operation and personnel safety

[0003] With the continuous improvement of the running speed of railway trains, due to the lack of necessary early warning and prompting system, the staff along the railway line cannot understand the specific information of the trains on the line, resulting in casualties. However, the functions and performances of these devices are different, and the communication systems are also different from each other, so they cannot be adapted to a wide range of promotion and use; in addition, these devices also have poor reliability and unstable performance. problems; moreover, since such devices are set up separately and are not integrated with other systems, there are problems of inconvenient use and high cost

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