Railway microelectronics phase-sensitive track circuit power generation system

Abstract

A railway microelectronic phase-sensitive track circuit power generation system, including a power module, a switcher, a microcomputer, a crystal oscillator, a phase regulator, and two track circuit power supply devices, wherein the left channel outputs 220V track power supply, and the right channel outputs 110V local power supply; the switcher, phase regulator and crystal oscillator are respectively connected to the input end of the microcomputer, and the two-way track circuit power supply device is connected to the output end of the microcomputer through the interface I / O; the two-way track circuit power supply device The structure is the same, including a D / A converter, a current-to-voltage converter and a power module connected in sequence. The power generation system uses a microprocessor to generate two power sources of phase-sensitive track circuit (50Hz and 25Hz), that is, track power supply and local power supply, and it is a standard sine wave signal, which can easily adjust the amplitude and phase, and is conducive to the stable and reliable operation of the system. , can realize experimental training teaching, and can meet the requirements of students' experimental training.

Description

technical field [0001] The invention relates to power supply equipment for railway traffic signal machines, in particular to a railway microelectronic phase-sensitive track circuit power generation system for two types of 25Hz and 50Hz phase-sensitive track circuits. Background technique [0002] With the rapid development of high-speed railways in my country, the role of railway microelectronic phase-sensitive track circuits in high-speed signal equipment is becoming more and more important, and the phase-sensitive track circuit power supply is the primary component of the system. At present, the phase-sensitive track circuit power supply has the following deficiencies : [0003] The power supply of the phase-sensitive track circuit on the railway site comes from the power supply screen, the track power supply is 220V, and the local power supply is 110V. The phase of the local power supply is 90 degrees ahead of the track power supply. It is a 25Hz power supply, and the amp...

AI Technical Summary

Problems solved by technology

[0003] The power supply of the phase-sensitive track circuit on the railway site comes from the power supply screen, the track power supply is 220V, and the local power supply is 110V. The phase of the local power supply is 90 degrees ahead of the track power supply. It is a 25Hz power supply, and the amplitude and phase cannot be adjusted. Even if it can be adjusted, it is very inconvenient, and the waveform of this power supply is poor, which is not conducive to the stable and reliable operation of the system.

Images