Transponder monitoring device

Abstract

The invention relates to a transponder monitoring device. The transponder monitoring device comprises a first frequency selection filtering amplification circuit, a frequency discrimination demodulation circuit, a second frequency selection filtering amplification circuit, a detection rectification circuit, a microprocessor and an output circuit, the first frequency selection filtering amplification circuit receives an electromagnetic wave signal emitted by the transponder; electromagnetic wave signals emitted by a vehicle-mounted BTM are received through the second frequency selection filtering amplification circuit, the transponder and the vehicle-mounted BTM can be monitored in real time, an oscilloscope does not need to be carried to manually check the transponder and the vehicle-mounted BTM one by one, the working state of an original facility is not changed, even if an extreme special event occurs, the detection device can be controlled to be in a non-working state, and the normal work of the transponder and the vehicle-mounted BTM is not influenced. The transponder monitoring device has no an electromagnetic-wave oscillation circuit, only receives the BTM and the radio frequency signals of the transponder, does not radiate or leak the radio frequency signals to the outside, does not interfere with other external facilities, needs to add a small number of peripheral components on the basis of original equipment, and is low in cost.

Description

technical field [0001] The invention relates to the technical field of transponder detection, in particular to a transponder monitoring device. Background technique [0002] Traditional railways bury signs indicating railway line parameters on the side of the railway for train drivers to visually watch. Due to the high speed of the high-speed railway, the visual line signs on the side of the railway are no longer suitable. In order to overcome this shortcoming, at this stage, the train control system is upgraded to automatically read the electronic signs that store the parameters of the railway line. The high-speed train control system includes two parts: ground equipment and on-board equipment. The transponder is one of the important components of the ground equipment, and the vehicle-mounted transponder information receiving module (vehicle BTM) is one of the important components of the vehicle-mounted equipment. [0003] China Train Control System has 5 application leve...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a transponder monitoring device to solve the problem of inaccurate transponder detection in the prior art

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