Intelligent door lock with projection keyboard

Abstract

The invention discloses an intelligent door lock with a projection keyboard. The intelligent door lock comprises a door frame, a door plank, a power supply module, a communication module, an MCU and avoice module, wherein the door frame is fixedly arranged on a wall body; the door plank is rotatably connected to the inner wall of the door frame through hinges; after a person is detected by an infrared sensor, information is transmitted to the MCU, and a laser projector is turned on by the MCU to project the projection keyboard; key-pressing action track of an operator on the projection keyboard can be captured by a camera, and the information is transmitted to the MCU; and the MCU judges the information through internal programming to determine whether to open a switch between a mechanical anode lock and a cathode lock so as to open the door lock or not. The laser projection keyboard has good invisibility and leaves no fingerprints; the intelligent lock displays a digital keyboard through the laser rear projection technology only when the user is detected to be close to the door, so that the safety is high; and the whole lock looks more dazzling with good sense of science and technology, and therefore, different use experiences can be brought to the user.

Description

technical field [0001] The invention relates to the field of smart home, in particular to an intelligent door lock with a projection keyboard. Background technique [0002] Smart door lock refers to a lock that is improved on the basis of being different from traditional mechanical locks, and is more intelligent and simple in terms of user security, identification, and management. The smart door lock is the executive component for locking the door in the access control system. In the smart door lock control scheme, the embedded development of the door lock is an important step, so that wireless data conversion and wireless control can be realized on the hardware. The serial port WIFI module TLN13UA06 mainly used in smart door locks is a new generation of embedded Wi-Fi module products. The software and hardware interfaces are fully compatible with TLG10UA03, Bluetooth module, Bluetooth chip, small size and low power consumption. Different from traditional mechanical locks,...

AI Technical Summary

Problems solved by technology

[0004] Today's smart locks use fingerprints, passwords, mobile APPs, cards, etc. have become the most basic opening methods, and the combination of fingerprints + passwords has been widely used, but there is a drawback to traditional acrylic or glass screens , that is, when the user uses the password to open the door, it is easy to leave traces, and the criminals can obtain the user password through the irradiation of the purple light, which brings great hidden dangers to the user's personal and property safety, so it cannot meet the needs of the existing technology

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