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A high-precision step loss detection method and device based on an ultrasonic sensor

A loss detection and ultrasonic technology, which is applied in escalators, transportation and packaging, etc., can solve the problems of poor practicability and achieve the effect of avoiding poor practicability, improving detection accuracy and high precision

Active Publication Date: 2020-08-25
中景恒基云端物联网科技成都有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is: the present invention provides a high-precision step loss detection method and device based on an ultrasonic sensor, which solves the problem that the existing detection method uses ultrasonic infrared diffuse reflection to sense a fixed distance, resulting in poor practicability

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  • A high-precision step loss detection method and device based on an ultrasonic sensor
  • A high-precision step loss detection method and device based on an ultrasonic sensor
  • A high-precision step loss detection method and device based on an ultrasonic sensor

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Embodiment 1

[0037] A high-precision step loss detection method based on an ultrasonic sensor, comprising the steps of:

[0038] Step 1: Send and receive radio waves to each step through the ultrasonic sensor to obtain the axial distance of each step;

[0039] Step 2: After a period of detection time, a plurality of inter-axis distance data are obtained, and the reference time difference corresponding to the shortest inter-axis distance is calculated after selecting the shortest inter-axis distance;

[0040] Step 3: Calculate the time difference corresponding to the axial distance of each step obtained in step 1;

[0041] Step 4: Determine whether the time difference obtained in step 3 is greater than the reference time difference, if it is greater, the step is lost; if not, skip to step 2.

[0042] Step 2 includes the following steps:

[0043] Step 2.1: Set an appropriate detection time according to the steps of the escalator, and continuously detect the axial distance of each step duri...

Embodiment 2

[0056]A high-precision cascade loss detection method and device based on an ultrasonic sensor, including the following steps: firstly, the ultrasonic sensor sends and receives radio waves, the ultrasonic measurement circuit performs waveform signal measurement and processing, and then converts the processed waveform signal through a waveform-to-serial port The chip, the analog-to-digital conversion unit and the signal isolation chip are converted and then transmitted to the single-chip microcomputer. The single-chip computer calculates the step shaft distance. After 5-10 minutes of detection time, the single-chip computer calculates the shortest step shaft distance during the detection time. Calculate the reference time difference between the corresponding step shafts. According to the calculation, the reference time difference is 1.5s; because each step corresponds to a step shaft, if the step is lost, the time difference corresponding to the step shaft distance will be greater...

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Abstract

The invention discloses a high-precision gradient loss detection method and a device based on an ultrasonic sensor, and relates to the field of gradient loss of ultrasonic detection. The method comprises the following steps that 1, a radio wave is transmitted and received to each gradient through the ultrasonic sensor to obtain axial spacing of each gradient; 2, a plurality of shaft distance datais obtained through a detection time, and reference time difference corresponding to the shortest shaft distance is calculated after the shortest shaft distance is selected from the shaft distance data; 3, the time difference corresponding to the shaft spacing of each gradient obtained in the step 1 is calculated; and 4, whether the time difference obtained in the step 3 is larger than the reference time difference or not is judged, if yes, the gradient is lost, and if not, the step 2 is executed. The problem that the practicability is poor due to the fact that an existing detection method adopts the ultrasonic infrared diffuse reflection induction fixing distance is solved, so that the effect of accurately detecting the gradient loss by detecting the shortest distance corresponding to different escalators is achieved.

Description

technical field [0001] The invention relates to the field of ultrasonic detection of step loss, in particular to a high-precision step loss detection method and device based on an ultrasonic sensor. Background technique [0002] When the escalator is running, due to man-made or long-term use of the steps, a step falls instantly, and there is a dangerous situation of the elevator cavity, then the equipment needs to detect the cavity of the missing step in time to avoid safety accidents Occurs, the step loss of the escalator has a major impact on the safety of the escalator. According to the regulations, "the step loss monitoring device of the field equipment should be installed next to the upper and lower step subsidence protection device. The inspection method: remove a step or pedal, Run the gap to the position of the straight section in the return branch that connects to the lower part of the slewing section, and start the equipment to go up and down normally." However, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B29/00B66B27/00
CPCB66B27/00B66B29/005
Inventor 张鑫夏元林周翔
Owner 中景恒基云端物联网科技成都有限公司