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

A Segmented Mutual Capacitance Displacement Sensor for Roof Delamination Monitoring

A displacement sensor, top plate separation technology, applied in the direction of using electrical devices, electromagnetic means, instruments, etc., can solve the problems of increasing absolute measurement error and large sensor size, and achieve the effect of reducing requirements and simplifying the production process

Active Publication Date: 2016-08-10
SHANXI COAL TRANSPORTATION & SALES GRP +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the capacitive sensor measures a large displacement, the current capacitive sensors are mainly variable medium capacitive displacement sensors and variable area capacitive displacement sensors. 2) The absolute measurement error increases with the increase of the measured length

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
  • A Segmented Mutual Capacitance Displacement Sensor for Roof Delamination Monitoring
  • A Segmented Mutual Capacitance Displacement Sensor for Roof Delamination Monitoring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: as figure 1 , figure 2 As shown, the segmented mutual capacitance displacement sensor of this embodiment includes a fixed pole plate 1, a sliding pole plate 2 and a capacitance measurement circuit 3, wherein the fixed pole plate 1 is a segmented conductive unit structure, the number is five, and the segment The conductive unit includes a receiving electrode 5 and a transmitting electrode 6. The receiving electrode 5 has a width of 12.7mm and a length of 24.8mm. mm, the shape is square, the material is copper, the total length of the fixed pole plate 1 is 125mm; the width of the sliding pole plate 2 is 30mm, the length is 24.8mm, the quantity is one piece, the shape is square, the material is copper, and the sliding pole plate 2 is used for displacement measurement At most two segmented conductive units can be covered at the same time; the emitting electrodes 6 of each segmented conductive unit are connected together to form the total emitting electrode 4...

Embodiment 2

[0036] Embodiment 2: The fixed pole plate 1 of the present embodiment adopts the silk screen printing method, and according to the accompanying drawings, the conductive paste is printed on the horizontal arm (circle) of the mechanical top plate delamination instrument, and after the conductive layer is printed, coat A layer of insulating layer, the lead-out line of the segmented conductive unit is led to the capacitance measurement circuit with a flexible printed cable, and the main chip is AD7153. The sliding plate 2 is made of circular conductive material. The maximum measurement error of this embodiment is 1.12mm, in a mine 15 # It is better applied in the monitoring of the roof abscission of the return air trough in the coal seam 1501 working face. Others are with embodiment 1.

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 a subsection mutual capacitance displacement sensor for monitoring top plate roof separation. The subsection mutual capacitance displacement sensor comprises 2-50 fixed pole plates, a sliding plate and a capacitance measuring circuit. The fixed pole plates are of a subsection electric conduction unit structure. The subsection electric conduction unit comprises receiving electrodes and emission electrodes. The receiving electrodes are mutually independent. The emission electrodes are connected together. Consequently, an overall emission electrode of the fixing pole plates is formed. The overall emission electrode and the receiving electrodes are connected with the capacitance measuring circuit. The sliding pole plate covers the subsection conducting unit and is connected with a measuring rope of deep base points and shallow base points. According to the subsection mutual capacitance displacement sensor, the fixed pole plates are of the subsection conducting unit structure, the overall length of the fixed pole plates is equal to the length to be detected plus the length of the sliding pole plate and is far less than two times of an existing length to be detected, moreover, the absolute measuring error is less the largest error when the sliding pole plate is measured with a subsection electric conduction unit unit.

Description

technical field [0001] The invention belongs to the technical field of roof detachment monitoring of underground roadways in coal-measure strata mines, and in particular relates to a segmented mutual capacitance displacement sensor used for roof detachment monitoring. Background technique [0002] At present, the sensors involved in the monitoring of the surrounding rock separation layer of the mine underground roadway in the coal-measure strata are mainly displacement sensors. According to the monitoring principle, the displacement sensors can be divided into resistive displacement sensors, capacitive displacement sensors, inductive displacement sensors, gratings, and magnetic gratings. , Capacitive grid displacement sensor and magnetostrictive displacement sensor and so on. Among them, the most studied are: 1) Resistive displacement sensor. The sensor has the characteristics of simple structure and convenient collection; 2) Photoelectric, magnetoelectric pulse coded displ...

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): G01B7/02
Inventor 王东李风珍贾存华孙春伟郑铜镖朱跃琴
Owner SHANXI COAL TRANSPORTATION & SALES GRP
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