COMMUNICATION DEVICE FOR TRAIN CONTROL - Nippon Signal Co., Ltd.

Title:

COMMUNICATION DEVICE FOR TRAIN CONTROL

Document Type and Number:

Japanese Patent JP3197933

Kind Code:

B2

Abstract:

PURPOSE: To improve a noise-proof characteristic and a mutual interference characteristic with an adjoining track circuit in a communication method for train detection, train control in which a track circuit is used.
CONSTITUTION: This communication device for train control is composed of a signal spreading means 2 that spreads and processes a signal with a specified PN code, a transmitting means 3 that transmits the spread signal to the side (S) of the starting end of a rail (T) that forms a track circuit, a receiving means 5 of spread signal from the side (R) of the terminal end or from the rail (T), a means 7 that demodulates and processes the spread signal received with the same frequency as a transmit signal and extracts a specified PN code, a noise eliminating means 8 that analyzes the extracted signal with FFT frequency to eliminate noise, and a detecting means 10 that detects the coincidence state of the signal from which noise is eliminated and the specified PN code, and detects the existence of a train on the rail from its presence, or detects a train control signal from the side of the ground on the side of the train that travels on that rail.

Inventors:

Kenji Nakata

Application Number:

JP9028692A

Publication Date:

August 13, 2001

Filing Date:

March 16, 1992

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