Detection of state of engagement between step and comb plate of passenger conveyor
First Claim
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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Abstract
The present invention relates to the field of passenger conveyor technologies, and provides an engaging state detection system of a passenger conveyor and a detection method thereof. In the engaging state detection system and detection method of the present invention, a depth sensing sensor is used to sense at least an engaging portion between a step and a comb plate of the passenger conveyor to obtain depth maps, and the depth maps are analyzed by a processing apparatus to detect whether an engaging state between the step and the comb plate is a normal state. The detection of the engaging state includes detection on whether comb teeth of the comb plate are broken, whether engaging teeth of the step are broken, and/or whether a foreign matter exists on an engaging line.
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Citations
27 Claims
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1. An engaging state detection system of steps and comb plates of a passenger conveyor, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 27)
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17. An engaging state detection method of steps and comb plates of a passenger conveyor, comprising steps of:
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sensing, by a depth sensing sensor, at least an engaging portion between a step and a comb plate of the passenger conveyor to obtain depth maps; acquiring a background model based on depth maps sensed when the passenger conveyor has no load and the engaging state is a normal state; comparing a depth map sensed in real time with the background model to obtain a foreground object; and processing data at least based on the foreground object to judge whether the engaging state is a normal state. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification