Smart Door Lock System and Lock Control Method Thereof

A smart door lock system for controlling the opening and closing of a door, comprising:

• an electronically-controlled door lock;
• a camera system, wherein the camera system comprises a motion detector configured to detect object motion in the field of view of the camera system, and a first camera device facing towards an outer side of the door, wherein the first camera is configured to capture image data of the moving object in the area outside the door in the field of view thereof in response to an object motion detected by the motion detector in the field of view of the camera system;
• and
• a door lock controller comprising at least one processor and one or more storage devices, the one or more storage device encoded with instructions that, when executed by the at least one processor, cause the at least one processor to:
• determine, by a door lock controller processing the image data of the moving object, that one or more criteria are satisfied, wherein the one or more criteria comprise determining that the objects contained in the image data includes human, or determining that the image data contains human face regions;
• output, in response to determining that one or more criteria are satisfied, at least a portion of image data of the moving object for transmission to a remote computing device;
• receive, by the door lock controller from the remote computing device, a unlock control command configured to cause the door lock controller to unlock an electronically-controlled door lock, wherein the electronically-controlled door lock is installed to control the opening and closing thereof between an opened position and locked position;
• and
• unlock, by the door lock controller in response to receiving the unlock control command from the remote computing device, the electronically-controlled door lock.