Automatic detection device of transponder

Abstract

The invention discloses an automatic detection device of a transponder. A master control module is used for controlling a passive transponder detection module to detect the strength of an uplink signal of a passive transponder, the frequency and phase of an uplink link signal and a message read-write status; the automatic detection device can further simulate LEU (Lineside Electronic Unit) equipment, and detect the operating status of an active transponder through an active transponder detection module so as to judge whether the active transponder and the passive transponder are in good conditions, therefore the traffic safety can be effectively guaranteed; in addition, the automatic detection device can simulate the active transponder to generate a rail passing signal to detect the responding status of the LEU equipment; meanwhile, according to the technical scheme, the detection of large-capacity transponders can be realized, and the detection of an existing European standard transponders can be compatible.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a transponder automatic detection device. Background technique [0002] The transponder is an important device in the CTCS system. It is connected to the BTM (Transponder Transmission Module) through the interface "A", and connected to the LEU (Land Electronic Unit) through the interface "C". The train control system currently used by the passenger dedicated line is CTCS-2 or CTCS-3 train control system, a large number of European standard transponders are used to provide the basic data required for ATP (Train Overspeed Protection System) control trains, and European standard passive transponders A message is stored inside (1023 bits if it is a long format message, and 341 bits if it is a short format message), and the interface "A1" adopts FSK (frequency shift keying) debugging method. The default message of the European standard active transponder is a message (1023 bits ...

AI Technical Summary

Problems solved by technology

[0003] However, in the existing European standard transponder system, the user data volume of a single transponder device is only 830 bits (long format message) or 210 bits (short format message), which is far from meeting the needs of system transformation, and needs to be considered to increase The amount of information transmitted by the system, and also serves as the existing CTCS-2 train control system, by adding a new PSK channel on the basis of the European standard balise, the expansion of the amount of information transmitted by the balise system has been realized, forming a large-capacity balise (passive balise), the amount of information stored in the large-capacity balise is twice that of the European standard balise, which effectively saves the cost of upgrading the normal speed line signal system

[0004] However, there is currently no scheme for detecting the working status of transponders (including European standard transponders and large-capacity transponders), so there are certain potential safety hazards

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