A rail transit power supply device without switching contacts

Abstract

The invention relates to a non-switching-connector type power supply device for the rail transit. The device comprises a gating circuit, a digital monitoring module, a high-frequency isolating circuit and an AC / DC output module; the gating circuit is used for selecting one of two externally-inputted power signals and sending to the high-frequency isolating circuit; the digital monitoring module is used for acquiring the parameters of the two externally-inputted power signals and respectively generating an isolating control signal for controlling the high-frequency isolating circuit and an output control signal for controlling the AC / DC output module according to the parameters of the power signals; the high-frequency isolating circuit is used for performing high-frequency isolation for the inputted power signals according to the isolating control signal and sending the power signals subjected to high-frequency isolation to the AC / DC output module; the AC / DC output module is used for performing AC or DC output for the power signals subjected to the high-frequency isolation according to the output control signal. With the adoption of the device, the input and output of a power supply system of the rail transit can be avoided interrupting, and thus the stable, safe and reliable power supply system is achieved.

Description

technical field [0001] The invention relates to a power supply system for rail traffic signals, in particular to a rail traffic power supply device without switching nodes. Background technique [0002] my country's rail transit is developing towards high-speed, high-density, and heavy-duty, which requires modern rail transit signal equipment to adapt. With the development of modern technologies such as computer technology, network technology, and modern communication technology, a new signal system with a higher degree of automation, a larger control range, and a more centralized system has emerged, which has the characteristics of networking, integration, and intelligence. Therefore, higher requirements are put forward for the rail transit power supply system that provides power for signal equipment. It requires that the signal power supply is not only safer, more reliable, but also more intelligent. The company's newly developed new rail transit model intelligent power ...

AI Technical Summary

Problems solved by technology

[0007] The input of the above two working modes has H-bridge circuit switching, and H-bridge circuit switching with heavy load in actual work can easily cause damage to the H-bridge itself and cause the entire power system to fail.

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