Patent ID: 11875278
Assignee: JOHNSON CONTROLS TYCO IP HOLDINGS LLP
Field: Control (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A building security system of a building, the building security system comprising one or more memory devices configured to store instructions that, when executed by one or more processors, cause the one or more processors to:
receive door lock data collected from one or more sensors for one or more doors within the building indicating operation of the one or more doors;
select a first door from the one or more doors of the building for which the door lock data is collected;
detect a plurality of event pairs in the door lock data, each event pair comprising a first event occurring at the first door at a first time and a second event occurring at the first door at a second time;
segment the door lock data into a plurality of segments corresponding to the plurality of event pairs, each segment defining a time interval that elapses between the first event and the second event of the corresponding event pair;
apply a generated model to the plurality of segments of the door lock data to compute a probability metric for each segment of the plurality of segments of the door lock data based on the time interval that elapses between the first event and the second event of the corresponding event pair;
compute a combined probability score for the first door based on the probability metrics for each segment of the plurality of segments of the door lock data; and
classify a function of the first door by comparing the combined probability score to a threshold.