Escalator speed and reversal detection method and device based on rotary encoder

A rotary encoder and detection method technology, applied in escalators, transportation and packaging, elevators, etc., can solve problems such as difficult capture and detection of retrograde, and achieve strong anti-interference, anti-interference, and stable performance.

Inactive Publication Date: 2018-06-15
中景恒基云端物联网科技成都有限公司
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is: the present invention provides an escalator speed and fault detection method and device based on a rotary encoder, which solves the problem of detection of retrograde due to the difficulty in capturing the direction of rotation in microseconds when using a rotary encoder. difficult question

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Escalator speed and reversal detection method and device based on rotary encoder
  • Escalator speed and reversal detection method and device based on rotary encoder
  • Escalator speed and reversal detection method and device based on rotary encoder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of escalator speed and retrograde detection method based on rotary encoder, comprises the following steps:

[0033] Step 1: Turn on the machine and monitor the status of the rotary encoder to judge whether the escalator is running. If so, start self-learning and skip to step 2. Otherwise, end;

[0034] Step 2: collect the A-phase signal and B-phase signal of the rotary encoder and count the pulse of the rotary encoder;

[0035] Step 3: Determine whether the escalator is running backwards according to the collected A-phase signal and B-phase signal, and if so, stop the escalator; otherwise, calculate the speed of the escalator in interrupt mode based on the pulse of the rotary encoder.

[0036] Self-learning in step 1 includes initialization, algorithm redundancy processing and anti-interference processing.

[0037] Step 2 includes the following steps:

[0038] Step 2.1: Collect the A-phase signal and B-phase signal of the rotary encoder through the acquisition ...

Embodiment 2

[0045]Working principle: Start the machine to monitor the state of the rotary encoder to judge whether the escalator is running. If it is running, it will start self-learning. After collecting the A-phase signal and B-phase signal of the rotary encoder, judge the running state of the escalator. If the A-phase signal line is high, then Forward rotation; if the B-phase signal line is high, it is reverse; continue to collect the A-phase signal and B-phase signal, and judge whether the A-phase signal line is continuously high-level, and if so, judge whether the B-phase signal line is continuous If it is low level, the escalator will run normally; otherwise, the escalator will stop when it goes backwards; when the rotary encoder starts to rotate, the interrupt mode will be started to count the number of pulses. The circumference of the wheel of the rotary encoder, the number of pulses corresponding to one rotation and the number of rotations for one rotation are known. When using ti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an escalator speed and fault detection method and device based on a rotary encoder and relates to the field of escalator speed measurement and reversal detection. The method comprises the following steps that 1), the state of the rotary encoder is monitored at startup to determine whether an escalator is running or not, and if yes, the self-learning is started, and the second step is executed; and if not, the process ends; 2), an A-phase signal and a B-phase signal of the rotary encoder are acquired, and statistic of the pulses of the rotary encoder is performed; and 3), whether the escalator reversal exists or not is judged according to the acquired signal, and if yes, the escalator is stopped; and if not, the escalator speed is calculated by the adoption of an interrupting mode according to the pulses. The device comprises an acquisition circuit, a filter circuit and a single chip microcontroller. The acquisition circuit comprises a rotary encoder signal acquisition unit, an amplifying unit and a strong and weak electricity conversion unit. The escalator speed and fault detection method and device solve the problem that the rotation direction is measured by the adoption of a rotary encoder, and difficult capturing is caused by the microsecond class time in the prior art, capturing of the microsecond-class A-phase signal and the microsecond-class B-phase signal is achieved, and therefore the effect of measuring the rotation direction is achieved.

Description

technical field [0001] The invention relates to the field of escalator speed measurement and retrograde detection, in particular to an escalator speed and retrograde detection method and device based on a rotary encoder. Background technique [0002] The long-term operation of the escalator is prone to metal fatigue and failure of safety components, such as the breakage of the driving chain; the displacement of the traction machine due to loose bolts, etc., resulting in the retrograde movement of the elevator; the existing retrograde detection senses the escalator by setting a proximity switch The situation can be judged accordingly, but the proximity switch is greatly affected by environmental factors, resulting in poor measurement accuracy; on the other hand, the rotary encoder is a device used to measure the speed and cooperate with PWM technology to achieve rapid speed regulation. The photoelectric rotary encoder uses photoelectric conversion. It can convert mechanical q...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/00B66B25/00B66B29/00B66B27/00
CPCB66B5/0031B66B25/00B66B27/00B66B29/005
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap