System and Method for Movable Barrier Monitoring

A method of operating a movable barrier operator comprising:

• causing a variable speed drive of the movable barrier operator to turn a rotatable member at a pre-calibration speed to move a door connected to the rotatable member between an open position and a closed position, the pre-calibration speed corresponding to a target variable of the door;
• receiving, at a processor circuit of the movable barrier operator, a time-of-flight measurement from a time-of-flight sensor, the time-of-flight measurement indicative of an actual variable of the door;
• and
• in response to a difference between the target variable and the actual variable of the door, causing the variable speed drive to adjust a speed of turning the rotatable member.

A non-transitory computer readable medium having instructions stored thereon that, when executed by a processor circuit of a movable barrier operator system, cause the processor circuit to perform operations comprising:

• causing a variable speed drive of a movable barrier operator system to turn a rotatable member of the variable speed drive at a pre-calibration speed to move a door connected to the rotatable member between an open position and a closed position, the pre-calibration speed corresponding to a target variable of the door;
• receiving, at the processor circuit of the movable barrier operator system, a time-of-flight measurement from a time-of-flight sensor, the time-of-flight measurement indicative of an actual variable of the door;
• and
• in response to a difference between the target variable and the actual variable of the door, causing the variable speed drive to adjust a speed of turning the rotatable member.

A non-transitory computer readable medium having instructions stored thereon that, when executed by a processor circuit of a movable barrier operator system that includes a variable speed drive with a rotatable member connected to a door, cause the processor circuit to perform operations comprising:

• controlling the variable speed drive of the movable barrier operator system to turn the rotatable member at a pre-calibration speed that corresponds to a target variable of the door;
• causing a time-of-flight sensor of the movable barrier operator system to emit a signal;
• measuring a time-of-flight of the signal;
• determining an actual variable of the door based at least in part upon the time-of-flight of the signal;
• and
• causing the variable speed drive to adjust a speed of turning the rotatable member in response to a difference between the target variable and the actual variable of the door.