Power switching circuit and intelligent door lock

Abstract

The invention relates to a power supply switching circuit and an intelligent door lock, the power supply switching circuit comprises a first voltage detection unit, a second voltage detection unit, a first switch unit and a second switch unit, a first input end of the first voltage detection unit is coupled with a first power supply, a second input end of the first voltage detection unit is coupled with an output end of the power supply switching circuit, and a second input end of the second voltage detection unit is coupled with a second power supply; the output end is coupled with the control end of the first switch unit; the first input end of the second voltage detection unit is coupled with the second power supply, the second input end of the second voltage detection unit is coupled with the output end of the power supply switching circuit, and the output end of the second voltage detection unit is coupled with the control end of the second switch unit; the first end of the first switch unit is coupled with the first power supply, and the second end of the first switch unit is coupled with the output end of the power supply switching circuit; the first end of the second switch unit is coupled with the second power supply, and the second end of the second switch unit is coupled with the output end of the power supply switching circuit. By adopting the scheme, lossless switching between the first power supply and the second power supply can be realized.

Description

technical field [0001] The present invention relates to the technical field of intelligent electronic equipment, and in particular, to a method and device for controlling intelligent equipment. Background technique [0002] With the development of society and economy, the degree of intelligence of electronic devices is getting higher and higher, and intelligent door locks are gradually replacing traditional mechanical door locks and are widely used. [0003] At present, smart door locks are powered by dry batteries or lithium batteries. Limited by the volume of the smart door lock, the volume of the battery is limited. In one solution, a power supply is provided in the smart door lock, but due to the limited capacity of the battery, it is difficult to achieve a long battery life. [0004] In the prior art, in order to solve the problem of battery life, two independent power supplies are set in the smart door lock, and during use, the two power supplies can be switched with...

AI Technical Summary

Problems solved by technology

However, the existing power supply consumes a lot of power during the switching process

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