CPC F24C 15/2042 (2013.01) [A61F 13/42 (2013.01); B66B 5/0012 (2013.01); G01J 5/0025 (2013.01); G01J 5/10 (2013.01); A61F 2013/421 (2013.01); G01J 2005/0077 (2013.01); G01J 2005/106 (2013.01)] | 20 Claims |
1. An auto detection system, configured to monitor an elevator cabin, the auto detection system comprising:
a thermal detection device configured to output digital values at a predetermined frequency; and
a host configured to
receive the digital values,
calculate a slope between two digital values,
identify opening and closing of a door of the elevator cabin by comparing the calculated slop and a slope threshold range, and
calculate a fluctuation degree of multiple digital values within a predetermined time interval after the door is identified to be opened and then closed.
|