doorClosed

DoorClosed is a term used in software, hardware, and automation to indicate that a door is in its closed position. It commonly represents a boolean state, where true signifies that the door is fully closed and false indicates that the door is open or not fully closed. In data models and programming, doorClosed may be implemented as a variable, property, or field (for example, doorClosed: boolean) and is often derived from a door sensor.

In practice, doorClosed is typically determined by one or more physical sensors, such as magnetic reed switches, limit switches, or optical sensors. Some systems may combine multiple inputs to handle uncertainty, such as sensor failure or inconsistent readings, and may apply debouncing or fault-handling logic to avoid false state changes. The exact interpretation of the signal can depend on sensor orientation and wiring, so clear documentation of the sensing method is important.

In applications like home automation, smart buildings, and security systems, doorClosed is used to trigger actions and alerts—locking doors, sending notifications, logging access events, or optimizing energy usage. In robotics and autonomous systems, knowledge of whether a door is closed informs navigation, task planning, and safety checks to prevent collisions or damage.

Representations of doorClosed vary by context: it is often a true/false flag, but may appear as 1/0 in low-level firmware or as a named state in higher-level software. Naming consistency, such as isDoorClosed or doorIsClosed, helps reduce confusion. Related concepts include doorOpen, doorStatus, door sensors, and state machines.