US 12,221,322 B2
Method and apparatus for monitoring elevator door-opening operation fault
Jianmin Cao, Shenzhen (CN); Ruize Sun, Shenzhen (CN); and Lei Wang, Shenzhen (CN)
Assigned to SHENZHEN TECHNOLOGY UNIVERSITY, Shenzhen (CN)
Appl. No. 16/770,632
Filed by SHENZHEN TECHNOLOGY UNIVERSITY, Shenzhen (CN)
PCT Filed Dec. 21, 2018, PCT No. PCT/CN2018/122646
§ 371(c)(1), (2) Date Jun. 8, 2020,
PCT Pub. No. WO2020/124546, PCT Pub. Date Jun. 25, 2020.
Prior Publication US 2021/0221644 A1, Jul. 22, 2021
Int. Cl. B66B 5/02 (2006.01); B66B 1/06 (2006.01); B66B 1/34 (2006.01); B66B 5/00 (2006.01)
CPC B66B 5/02 (2013.01) [B66B 1/06 (2013.01); B66B 5/0031 (2013.01); B66B 1/3415 (2013.01); B66B 5/0006 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for monitoring an elevator door-opening operation fault, comprising:
acquiring elevator control signals from a serial interface between an elevator controller and a control box by using a preset data acquisition device, wherein the elevator control signals comprise an elevator operation signal, an elevator door control signal, an elevator internal call signal and an elevator floor signal;
monitoring whether there is an elevator door fault in an elevator based on the elevator operation signal, the elevator door control signal and the elevator floor signal; and
determining that there is the elevator door-opening operation fault in the elevator when there is the elevator door fault in the elevator and the elevator internal call signal is in a preset level state.