Signal acquisition transmission device used for track circuit

Abstract

The invention relates to a signal acquisition transmission device used for a track circuit. The signal acquisition transmission device comprises a signal acquisition module, a signal transmission module, a power supply. The signal acquisition module is connected with the track circuit, and is used for the acquisition and the sampling processing of the signals of the track circuit. The signal transmission module is connected with the signal acquisition module, and is used to transmit the signals acquired by the signal acquisition module to outside. The power supply is connected with the signal acquisition module and the signal transmission module, and is used to supply the signal acquisition module and the signal transmission module with power. Compared with the prior art, the signal acquisition transmission device has advantages of accurate signal transmission, diverse signal transmission ways, and easy realization.

Description

technical field [0001] The invention relates to the field of signal acquisition and transmission, in particular to a signal acquisition and transmission device for track circuits. Background technique [0002] Outdoor frequency-shifting track circuit tests often require electrical maintenance personnel to carry special tools such as frequency-shifting meters or oscilloscopes to carry out measurements on site. The maintenance efficiency is low, and it is difficult to find problems in real time. In severe cases, it will cause train delays and affect train operations. [0003] Patent CN201410453552 proposes a track circuit signal acquisition system, which realizes the acquisition and transmission of circuit signals through a signal acquisition unit, an A / D conversion module, a DMA transmission module, a frequency shift demodulation module, a memory and a data transmission module. However, the system Since the data transmission is realized through the power carrier, the acquisit...

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Problems solved by technology

[0002] Outdoor frequency-shifting track circuit tests often require electrical maintenance personnel to carry special tools such as frequency-shifting meters or oscilloscopes to measure on-site. The maintenance efficiency is low, and it is difficult to find problems in real time. In severe cases, trains will be delayed and train operations will be affected.

[0003] Patent CN201410453552 proposes a track circuit signal acquisition system, which realizes the acquisition and transmission of circuit signals through a signal acquisition unit, an A / D conversion module, a DMA transmission module, a frequency shift demodulation module, a memory and a data transmission module. However, the system Since the data transmission is realized through the power carrier, the acquisition and transmission process needs to temporarily store the signal, and after reaching the preset value, the frequency shift demodulation is carried out before transmission. The process is too complicated, time-consuming and multi-module The establishment increases the cost of the system and is not suitable for general promotion

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