A sensor door refers to sliding and swing door types equipped with sensors. "Sensor" denotes a mode of door opening in automatic doors. The structure of sensor doors has evolved in recent years. They are widely used as glass doors in places like stores, hotels, and corporate entities. Their direct feature is that they automatically open when a person or object approaches. The door does not open when an object approaches. Sensor doors can be roughly categorized into sliding, rotating, and sliding-door types. Among them, sliding and rotating doors are suitable for sensor installation.