Smart door lock for public use rooms with enhanced reliability

摘要

The present invention relates to a crime prevention room door with a door lock. The door lock comprises: an outer fixing member having a rotatably installed outer lever, and provided on the outer surface of the room door; a fingerprint recognition unit provided on the outer lever or the outer fixing member to recognize a fingerprint; a wireless communication unit provided to perform wireless communications; a control unit receiving access permission fingerprint information registered in the fingerprint recognition unit and an expiration date registered by an operating unit, or receiving the access permission fingerprint information and the expiration date from a terminal which is authenticated by having access through the wireless communication unit, controlling an open signal to be output when fingerprint information recognized by the fingerprint recognition unit matches the access permission fingerprint information and the timing of the matching is within the expiration date, creating an access record, and providing the same to an operator terminal having access through the wireless communication unit; a memory unit storing the access permission fingerprint information, the expiration date, and the access record and providing the same according to a request from the control unit; a locking unit maintaining a locking state by inhibiting the rotation of the outer lever from the outer fixing member by a locking piece held on a holding portion provided on a lateral portion of the outer lever by the movement of a tapered member, and unlocked by the outer lever rotated from the outer fixing member by the locking piece separated from the holding portion by the return and elastic force of the tapered member in response to the open signal received from the control unit. Therefore, the present invention allows only a person who is authenticated to enter a room used as a private space through fingerprint recognition.