Patent ID: 11866296
Assignee: nan
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method for providing an elevator monitoring system for monitoring passengers using an elevator system, the method comprising:
providing at least one cabin-based radar monitor configured and operable to monitor passengers within at least one elevator cabin;
providing at least one waiting zone radar monitor configured and operable to monitor passengers in a waiting zone;
providing a central processor configured and operable to receive data from the at least one cabin-based radar monitor and the at least one waiting zone radar monitor, to analyze the data received from the at least one cabin-based radar monitor and the at least one waiting zone radar monitor and to execute an elevator control function to control the elevator system;
providing at least one proximal zone radar monitor configured and operable to monitor a target region around an automatic door;
providing at least one danger zone radar monitor configured and operable to monitor a danger zone where items may obstruct the door;
capturing a reference background of the danger region;
providing a door management processor configured and operable to select a door state;
the door management processor receiving raw data from the at least one proximal zone radar monitor;
the door management processor removing a background from the raw data from the proximal zone thereby calculating a proximal zone differential;
comparing the proximal zone differential to a first threshold value;
responsive to the proximal differential exceeding the first threshold value then identifying a moving object;
monitoring the moving object over multiple frames;
calculating a direction of motion associated with the moving object;
detecting current door state;
responsive to the direction of motion moving towards the door state is CLOSED, then the door management processor receives raw data from the at least one danger zone radar monitor;
subtracting the reference background from the raw data from the danger zone;
calculating a danger zone differential;
comparing the danger zone differential to a second threshold value;
if the danger zone differential exceeds the second threshold value then identifying an obstruction;
if the danger zone differential does not exceed the second threshold value then opening the door; and
setting the door state to OPEN.