| 摘要 |
A first proximity sensor array arranged on a first side of a stall-door comprises three linearly aligned sensors whereby left-to-right movement of a patron's hand within the sensing zone causes a bathroom stall door to open. A second proximity sensor array arranged on a second side of the stall door comprises three linearly aligned sensors whereby right-to-left movement of a patron's hand within the sensing zone causes the door to close. A second right-to-left movement across the same second sensor array causes the stall door to lock and a first display array arranged on the first side of the door and a second display array arranged on the second side of the door alight, indicating the stall is occupied and locked. A left-to-right movement across the second sensor array causes the stall door to unlock and open, and the display arrays indicate the stall is available.
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