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Detection of state of engagement between step and comb plate of passenger conveyor

  • US 10,071,884 B2
  • Filed: 07/28/2017
  • Issued: 09/11/2018
  • Est. Priority Date: 07/29/2016
  • Status: Active Grant
First Claim
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1. An engaging state detection system of steps and comb plates of a passenger conveyor, comprising:

  • a depth sensing sensor configured to sense at least an engaging portion between a step and a comb plate of the passenger conveyor to obtain depth maps; and

    a processing apparatus configured to analyze the depth maps to detect whether the engaging state between the step and the comb plate is a normal state, the processing apparatus being configured to comprise;

    a background acquisition module configured to acquire a background model based on depth maps sensed when the passenger conveyor has no load and the engaging state is a normal state;

    a foreground detection module configured to compare a depth map sensed in real time with the background acquisition model to obtain a foreground object; and

    an engaging state judgment module configured to process data at least based on the foreground object to judge whether the engaging state is a normal state.

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