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Device for controlling power earthing/under voltage warning and its control method

A technology for controlling power supply and alarm device, applied in the direction of measuring current/voltage, measuring device, power supply test, etc., can solve problems affecting the stability of power supply of the control system, lack of undervoltage alarm, short circuit of control power supply, etc., and achieve high reliability , The effect of small ground dead zone and wide detection range

Active Publication Date: 2007-06-27
ZHUZHOU ELECTRIC LOCOMOTIVE CO
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Problems solved by technology

The traditional electric locomotive control circuit uses an active grounding device, that is, when the locomotive is grounded, the battery will be directly connected to the grounding loop, and multi-point grounding is used, but this will greatly affect the stability of the power supply of the control system , resulting in the short circuit of the control power supply caused by multi-point grounding, and it does not have the function of undervoltage alarm

Method used

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  • Device for controlling power earthing/under voltage warning and its control method

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Embodiment Construction

[0018] The accompanying drawings show an embodiment of the present invention, and the present invention will be further described below in conjunction with the accompanying drawings.

[0019] As can be seen from the accompanying drawings, the present invention is a control power grounding / undervoltage alarm device. The / undervoltage alarm device analyzes the grounding / undervoltage status of the control power supply by sampling and processing the voltage. When the control power supply grounding / undervoltage alarm device detects that the control power supply is grounding or undervoltage, the control power supply grounding / undervoltage alarm device A high level signal is given to drive the buzzer to alarm. The control power supply grounding / undervoltage alarm device includes a single-chip microcomputer (PLC), which samples and processes the voltage, and connects grounding detection resistors R1 and R2 in series between the positive and negative wires of the storage battery signal...

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Abstract

The invention connects all electric wirings needed to carry out control power supply grounding / undervoltage (CPSGU) to device of CPSGU alarm. Sampling voltage, the device of CPSGU alarm processes, analyzes state of CPSGU. After detecting CPSGU, the device of CPSGU alarm sends out signal in high level to drive buzzer alarming.

Description

technical field [0001] The invention relates to a locomotive electrical protection device and its control method, in particular to a locomotive control power grounding / undervoltage alarm device and its control method, which are mainly used in various electric locomotive control power grounding / undervoltage protection systems middle. Background technique [0002] As an electrical control system, in order to ensure safety, it is generally necessary to ground each electrical device. The traditional electric locomotive control circuit uses an active grounding device, that is, when the locomotive is grounded, the battery will be directly connected to the grounding loop, and multi-point grounding is used, but this will greatly affect the stability of the power supply of the control system , resulting in the short circuit of the control power supply caused by multi-point grounding, and it does not have the function of undervoltage alarm. Therefore it is necessary to improve this....

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R31/02G01R31/40G01R19/00
Inventor 李昌奇瞿新
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO
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