Turnout control chip power management device and turnout control system

Abstract

The invention discloses a power management device of a turnout control chip and a turnout control system, wherein the power management device includes a control module, a variable voltage drive module, a transformer and a switch module, and the control module is used to output power control according to the control logic of the turnout control chip signal; the variable voltage drive module includes a switch tube, which is used to turn on or off according to the power control signal; the transformer is used to generate a switch drive signal according to the on-off state of the switch tube; the switch module is used to open or close according to the switch drive signal to disconnect or connect the power supply of the control chip. The power management device and turnout control system of the present invention can control the power supply of the output end of the turnout control chip according to the control logic of the turnout control chip, and can cut off the power supply of the turnout control chip when a short circuit failure occurs at the output end to prevent fault output , improve security.

Description

technical field [0001] The invention belongs to the technical field of rails, and in particular relates to a power management device for a turnout control chip and a turnout control system. Background technique [0002] figure 1 It is a schematic circuit diagram of a turnout control chip in the related art. The control chip C, such as an intelligent high-side switch control chip, can be used in the drive control of the turnout, wherein Ocontrol1 and Ocontrol2 are the control outputs of the single-chip microcomputer of the control chip C The pin is used to control the on-off state of the switch tube of the channel corresponding to the control chip C. The VBB pin is the power connection terminal, which is used to connect the power supply such as DC24V. The power supply provides power for the control chip C to work and when the switch tube is turned on , provide the working power of the load, and OUT1 and OUT2 are the output terminals of the control chip C. Because the overvo...

AI Technical Summary

Problems solved by technology

Because the overvoltage and overheating of the switch tube in the control chip C may cause the breakdown of the tube, and the traditional method of using the control chip C is to keep the power supply connected through the VBB pin. At this time, if the output terminal Short-circuit failure will lead to continuous external output of high level, which will bring safety risks to the turnout system

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