Handheld railway active transponder message generating device

Abstract

The invention relates to a handheld railway active transponder message generating device. The device comprises a DSP processor chip, a lithium battery, a keyboard control module, a liquid crystal display module, a DDS module, a DBPL coding circuit, a filtering power amplifier circuit, a frequency shift keying modulation circuit and a bidirectional transceiving antenna module. The DSP processor chip is connected with the lithium battery; the output end of the keyboard control module is connected with the DSP processor chip; the output end of the DSP processor chip is connected with the input end of the liquid crystal display module; the output end of the DSP processor chip is connected with the DDS module; wherein the output end of the DDS module is connected with the DBPL coding circuit, the output end of the DBPL coding circuit is connected with the filtering power amplifier circuit, the output end of the filtering power amplifier circuit is connected with the frequency shift keying modulation circuit, and the output end of the frequency shift keying modulation circuit is connected with the bidirectional transceiving antenna module and is connected with the DSP processor chip. Thereal-time performance and reliability of message data can be ensured, the cost is low, the size is small, and teaching is convenient to carry out.

Description

technical field [0001] The invention relates to a transponder, in particular to a handheld railway active transponder message generating device. Background technique [0002] There are two types of railway balises: passive balises and active balises. Ground passive transponders can only send fixed data messages, and active transponders can send real-time variable data messages when connected to ground electronic units (LEUs). The balise message refers to the balise user message stored in the balise or transmitted through the LEU after being scrambled by the European encoding algorithm. [0003] At present, the active transponder message is mainly generated by real-time coding of the station ground train control center TCC according to the route information, temporary speed limit, etc. source transponder, but whether the message data is lost or wrong cannot be displayed, and the train control center, ground electronic unit, active transponder and other equipment are expensi...

AI Technical Summary

Problems solved by technology

[0003] At present, the active transponder message is mainly generated by real-time coding of the station ground train control center TCC according to the route information, temporary speed limit, etc. source transponder, but whether the message data is lost or wrong cannot be displayed, and the train control center, ground electronic unit, active transponder and other equipment are expensive and bulky. For railway colleges and universities that are relatively short of funds, It is often unaffordable to buy these training equipment in batches

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