Emergency power-on reset circuit based on USB and intelligent door lock emergency power supply system using the same

Abstract

The invention discloses an emergency power-on reset circuit based on USB. The emergency power-on reset circuit comprises an EXP1 interface, an EXP2 interface, a fuse F1, a resistor R5, a resistor R53, a resistor R55, a resistor R56, a capacitor C46, a diode D6, a triode T3, and a RESET port. One end of the EXP2 interface is connected with the resistor R5, and the other end of the resistor R5 is grounded. One end of the EXP1 interface is connected with the fuse F1, and one end of the fuse F1 is connected with the diode D6. One end of the resistor R53 is serially connected with the fuse F1, and the other end of the resistor R53 is grounded. The capacitor C46 is parallely connected with the resistor R 53, and one end of the capacitor C46 is connected with the resistor R55. The other end of the resistor R55 is connected with the base of the triode T3, and the collector of the triode T3 is connected with the RESET port, and the emitter of the triode T3 is grounded. The two ends of the resistor R56 is parallely connected between the base and the emitter of the triode T3. The object of the invention is to provide the emergency power-on reset circuit based on the USB and an intelligent door lock emergency power supply system using the same. A portable charger is used to charge the intelligent door lock by a USB interface, and therefore carrying is convenient, and operation is simple.

Description

technical field [0001] The invention relates to the field of smart home, in particular to an emergency power-on reset circuit based on a USB and an emergency power supply system for a smart door lock using the same. Background technique [0002] The traditional emergency power interface uses a 2PIN socket, and an external 9V laminated battery leads out two wires, which are inserted into the 2PIN emergency power interface to supply power to the smart door lock. The battery box is inconvenient to carry around. Contents of the invention [0003] The purpose of the present invention is to solve the above problems and propose an emergency power-on reset circuit based on USB, which adopts the USB interface as the emergency power supply port of the smart door lock, uses charging treasure, etc. to supply power for the smart door lock, and has the function of power-on reset The function is to deal with the crash state caused by various abnormal conditions. [0004] In order to ach...

AI Technical Summary

Problems solved by technology

[0002] The traditional emergency power interface uses a 2PIN socket, and an external 9V laminated battery is used to lead two wires, which are inserted into the 2PIN emergency power interface to supply power to the smart door lock. It is inconvenient to carry the battery box with you.

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