IoT lock circuit based on national cryptographic chips

Abstract

This application relates to an IoT lock circuit based on a national cryptographic chip, comprising: a core board, a W5500 network communication module, a USB interface, a security encryption chip U7, a door status module, and a motor drive circuit; one end of the USB interface is electrically connected to the core board, and the other end of the USB interface is suitable for connecting a USB electronic key; the security encryption chip U7 is bidirectionally electrically connected to the core board; the W5500 network communication module is bidirectionally electrically connected to the core board, and the core board is suitable for communicating with the IoT lock central platform through the W5500 network communication module; the output end of the door switch module is electrically connected to the input end of the core board; the input end of the motor driver is electrically connected to the output end of the core board, and the output end of the motor drive circuit is suitable for being electrically connected to the power supply of the door lock motor; the circuit is suitable for unlocking the door lock by driving the motor drive circuit to work when a USB electronic key is inserted into the USB interface and the security encryption chip U7 verifies the data of the USB electronic key.

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