Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

An FPGA-based multi-path displacement pulse optimization device and method for pipeline caliper

A displacement pulse, caliper technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of lack of optimization methods and calibration methods, and achieve the effect of improving switching efficiency, solving accumulated errors, and ensuring consistency

Active Publication Date: 2018-04-20
NORTHEASTERN UNIV LIAONING
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing pipeline caliper mileage wheel positioning technology still lacks a complete and efficient optimization method and calibration method

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
  • An FPGA-based multi-path displacement pulse optimization device and method for pipeline caliper
  • An FPGA-based multi-path displacement pulse optimization device and method for pipeline caliper
  • An FPGA-based multi-path displacement pulse optimization device and method for pipeline caliper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] An FPGA-based multi-channel displacement pulse optimization device for pipeline caliper, such as figure 1 As shown, in this embodiment, it includes a pipeline caliper body, three mileage wheels, a signal acquisition module, an optical coupling isolation unit, and an FPGA central processing unit. The signal acquisition module includes 3 convex lenses, 3 rotary encoders, and 3 photosensitive elements. The rotary encoder adopts E6A2-CW3E, the optical coupling isolation unit adopts HCPL-053L, and the FPGA central processing unit adopts EP4CE15F17C8. There is a light source inside the pipe caliper body, and the three mileage wheels are evenly installed on the inner radial circumference of the pipe caliper body. Each mileage wheel shaft is equipped with a convex lens, a rotary encoder, and a photosensitive element. The sensor, photosens...

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

An FPGA-based multi-channel displacement pulse optimization device and method for pipeline calipers, belonging to the field of pipeline detection technology. The device includes a pipeline caliper body, several mileage wheels, a signal acquisition module, an optical coupling isolation unit, and an FPGA central processing unit. The signal acquisition module includes several convex lenses, several rotary encoders, and several photosensitive elements. Each mileage wheel shaft is equipped with a convex lens, a rotary encoder, and a photosensitive element. The convex lens, rotary encoder, and photosensitive element rotate coaxially with the mileage wheel. Several photosensitive elements are connected to the input end of the optical coupling isolation unit, and the optical coupling isolation The output end of the unit is connected to the input end of the FPGA central processing unit. The present invention utilizes the FPGA parallel processing mechanism to improve the processing speed of displacement pulse signals, effectively distinguishes the working states of several mileage wheels, solves the problem of cumulative displacement errors, and improves the accuracy of displacement measurement.

Description

technical field [0001] The invention belongs to the technical field of pipeline detection, and in particular relates to an FPGA-based device and method for optimizing multi-channel displacement pulses of a pipeline caliper. Background technique [0002] As the service life of laid oil and gas pipelines continues to increase, pipeline accidents caused by corrosion, deformation, leakage, etc. caused by aging pipelines are increasing. Therefore, it is of great significance to carry out leak detection for long-distance pipelines. How to accurately detect and repair the deformation and defects in the pipeline in time is an important task of the pipeline caliper. Accurate positioning is an important guarantee for timely maintenance of pipeline defects. The mileage wheel is the mileage measurement device of the pipeline caliper. It is the key technology to ensure the normal operation of the mileage wheel in the complex pipeline environment and to output high-precision pulse signal...

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 Patents(China)
IPC IPC(8): G01B11/12
CPCG01B11/12
Inventor 汪泽松李家凤冯健刘金海张化光马大中吴振宁李芳明卢森骧唐紫玮贾云飞高亮
Owner NORTHEASTERN UNIV LIAONING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com