Voltage detection and power failure protection device and implementation method

Abstract

The invention discloses a voltage detection and power failure protection device, which is used for keeping the voltage stability of a load. The device comprises a voltage detection module, a voltage stabilization circuit module, an energy storage and power supply module, a control module, a switch module and a power supply switching voltage stabilization module, wherein the switch module comprises a second switch and a third switch; a power supply is connected with one end of each of the second switch, the energy storage and power supply module and the voltage detection module; the other end of the second switch is connected with one end of the voltage stabilization circuit module; the other end of the energy storage and power supply module is connected with one end of the third switch; the other end of each of the voltage stabilization circuit module and the third switch is connected with the load by the power supply switching voltage stabilization module; and the control module is connected with the second switch, the third switch, the voltage detection module and the power supply switching voltage stabilization module. The voltage detection and power failure protection device provided by the invention can keep the power supply voltage stability of the load when the output of the power supply is instable, and may not cause voltage fluctuations of the load, thereby meeting the requirements of a user on the voltage stability of the load.

Description

technical field [0001] The invention relates to the technical field of power supply voltage control, in particular to a voltage detection and power-down protection device and an implementation method thereof. Background technique [0002] The reliability of the power supply plays a critical role in almost all electronic systems and mechatronic devices. When developing a system, it is necessary to integrate the power supply into the whole system for overall design from the very beginning, so as to achieve a good power supply to the load end. At the same time, it must also be considered to maintain a stable output power supply voltage when abnormal conditions occur. [0003] In the prior art, dual power supplies are generally used to ensure the reliability of the power supply: through the automatic transfer switch of the dual power supplies, when one power supply is powered off, it is automatically switched to the other. This method can guarantee continuous power supply to th...

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Problems solved by technology

[0005] In view of the shortcomings of the prior art above, the purpose of the present invention is to provide a voltage detection and power-down protection device and its implementation method to solve the problem that the power supply voltage management device in the prior art cannot automatically judge the abnormal voltage situation, so as to continue to output unstable voltage, causing the voltage fluctuation problem at the load end

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