Railway train reconnection induction communication equipment and anti-interference method

Abstract

The invention provides railway train reconnection induction communication equipment and an anti-interference method. A wireless digital induction communication radio station is arranged on a locomotive and is used for sending or receiving a reconnection induction communication signal. When the wireless digital induction communication radio station sends the reconnection induction communication signal, spread spectrum modulation is carried out by adopting a signal bandwidth expanding mode; when the wireless digital induction communication radio station receives the reconnection induction communication signal, a useful signal is extracted by adopting a mode of separating the strongest useful signal from multipath signals to carry out spread spectrum demodulation; the high-gain rod-shaped coupling sub-antenna is installed on a wireless digital induction communication radio station, and couples the reconnection induction communication signal to an electric power contact network in a wireless coupling mode. The anti-interference wave trapper is connected in series between a pantograph and a conducting rod on the roof of the locomotive. According to the method disclosed in the invention,the anti-interference capability of the induction communication signal of the multi-locomotive is improved, and the signal attenuation phenomenon caused by multipath interference in wireless communication is eliminated.

Description

technical field [0001] The invention belongs to the technical field of railway reconnection locomotive communication, and specifically relates to a reconnection induction communication device and an anti-interference method for railway trains. Background technique [0002] With the continuous development of railway transportation, when long ramps and heavy-duty trains are running, one locomotive traction sometimes cannot meet the power demand of transportation, and two or more locomotives are required for traction to meet the requirements of railway transportation. . At present, the reconnection of locomotives in the transportation production process often only performs simple mechanical reconnection, such as joint control by calling, siren and other means. This simple reconnection makes the operations of the main locomotive and the reconnection asynchronous, and the load power is uneven. , which is extremely unfavorable to the operation of the locomotive. If three or more...

AI Technical Summary

Problems solved by technology

[0006] Through the above technical scheme, based on the digital spread spectrum communication technology, the wireless digital induction communication station is used to realize the synchronous and coordinated wireless communication between the main locomotive and the double locomotive. The wireless digital induction communication station adopts the method of expanding the signal bandwidth during the signal transmission process. Realize the function of reducing the signal-to-noise ratio and increasing the signal gain, which effectively improves the anti-interference ability of the communication signal. Eliminate signal weakening caused by multipath interference in wireless communication, effectively improve the success rate of reconnection induction communication, and ensure the safe operation of locomotives; wireless digital induction communication stations use high-gain rod-shaped coupling sub-antennas to reduce antenna volume , improve the signal-to-noise ratio of the carrier signal, improve the signal coupling ability, increase the gain of the sending and receiving communication signal, and improve the anti-interference ability of the communication, etc., which solves the hidden safety problem of the long-wave and huge induction antenna of the traditional inductive communication; the anti-interference blocker is adopted, Realize the function of effectively blocking the transmission of the locomotive reconnection induction communication signal to the non-communication direction, reduce the transmission loss of the communication signal, and realize the effective blocking of the interference signal generated by the power supply system and other electrical equipment on the AC locomotive. The power frequency current is in a low impedance state, so it can realize the normal conduction of power frequency current, ensure the normal power consumption demand of other electrical equipment on the locomotive, and realize the effective anti-interference function of inductive communication

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