Method for judging whether target is inside or outside door

The invention relates to the technical field of smart home, and discloses a method for judging whether a target is inside and outside a door, which comprises the following steps: 1) a UWB antenna tag determines whether to enter a communication range by sending a UWB broadcast frame to an inner UWB antenna module and an outer UWB antenna module; (2) when the UWB antenna tag enters the communication range, the inner UWB antenna module and the outer UWB antenna module carry out authorization judgment on the UWB antenna tag; 3) when the UWB antenna tag is an authorized user, the UWB antenna tag, the inner UWB antenna module and the outer UWB antenna module mutually send time information, and ToF1 and ToF2 are calculated through a calculation formula; and (4) finally, the UWB antenna tag transmits the ToF1 and the ToF2 to a control node for controlling a door lock to be opened and closed through wireless communication for judgment operation, and whether the user is inside or outside the door is determined. Accordi