Digital demodulation device applied to CTCS standard point responder

A digital demodulation and transponder technology, which is applied in the demodulation of modulated electromagnetic waves, demodulation, railway signal and safety, etc., can solve the problems of not getting the best use of control functions and low technical content, and achieve reliable performance, Low cost, high reliability and high effect

Active Publication Date: 2008-08-13
HUNAN CRRC TIMES SIGNAL & COMM CO LTD
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Problems solved by technology

[0002] In recent years, with the continuous increase of train running speed and further increase of running density, railway transportation has higher and higher requirements for train control system (ATC system). best play

Method used

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  • Digital demodulation device applied to CTCS standard point responder
  • Digital demodulation device applied to CTCS standard point responder
  • Digital demodulation device applied to CTCS standard point responder

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] As shown in Figure 1, the present invention is applied to the digital demodulation device of CTCS standard point transponder, and it comprises main controller unit 1, input signal filtering unit 2, signal amplifying unit 3, AD conversion unit 4, power unit 6 and The external communication unit 7, the input signal filter unit 2 used to filter out the out-of-band interference noise is connected to the main controller unit 1 through the signal amplification unit 3 and the AD conversion unit 4 in turn, and the main controller unit 1 is used to convert the obtained digital signal Perform digital filtering operations to obtain real-time original signals, and judge antenna failure and signal strength. The external communication unit 7 is used to electrically isolate the output signal of the main controller unit 1 from the outside, and ...

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Abstract

The invention discloses a digital modulating device for CTCS standard responder, comprising a main controller unit, an input signal filtering unit, a signal amplifying unit, an AD converting unit, a power supply unit and an external communication unit for filtering an input signal filtering unit with interruption noise which is orderly connected to the AD converting unit and the main controller unit via the amplifying unit. The main controller unit is to process digital filter operation to obtained digital signal to obtain real-time original signal and to process antenna malfunction and signal intensity judgment. The external communication unit is to process external electric isolation for the output signal of the main controller unit and to convert signal end signal to the difference signal so as to improve anti-interruption ability of the signal. The power supply unit is to provide various required grade voltages for other units, at the same time to judge stability of the system to generate restoring signal. The invention has simple structure, low cost, low power consumption and so on. The modulation operation is of excellent accuracy, real-time performance and safety.

Description

technical field [0001] The invention mainly relates to the control field of railway locomotive safety equipment, in particular to a digital demodulation device applied to a CTCS standard point transponder. Background technique [0002] In recent years, with the continuous increase of train running speed and further increase of running density, railway transportation has higher and higher requirements for train control system (ATC system). best play. In foreign railway transportation systems, the absolute position information of the train is basically provided by special ground equipment to the on-board system, and this equipment is a point transponder. The European ERTMS / ETCS (European Railway Transport Management System / European Train Control System) system is currently the most advanced and systematic train control system in the world. The railway department has formulated the standard of China train control system (CTCS standard) with reference to the requirements of ET...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/59H03D9/00B61L23/00B61L27/04
Inventor 任颖吕浩炯田立新戴毅欣
Owner HUNAN CRRC TIMES SIGNAL & COMM CO LTD
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