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

Inductance approach switch sensor

A proximity switch and sensor technology, applied in the field of inductive proximity switch sensors, can solve the problems that ordinary proximity switch sensors cannot be used, the installation distance is too small, and cannot work normally, and achieve a wide range of applications, reduce detection distance, and structure. Simple and compact effect

Active Publication Date: 2012-11-14
NAT UNIV OF DEFENSE TECH +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the installation distance of two ordinary inductive proximity switches is too small, it will cause mutual influence and thus cannot work properly
In this way, ordinary proximity switch sensors cannot be used in working conditions with high requirements for discrimination.

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
  • Inductance approach switch sensor
  • Inductance approach switch sensor
  • Inductance approach switch sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like image 3 As shown, the inductive proximity switch sensor of the present invention includes an excitation circuit unit 1, a coil detection circuit unit 2, a signal processing circuit unit 3, and a detection coil unit 4 arranged toward the detected object 5. The detection coil unit 4 includes movement along the sensor. Two or more detection coils 41 are arranged in sequence. The detection coils 41 are flat rectangular coils arranged in sequence and attached to the non-metallic plane. The length of the detection coils 41 is greater than the shortest length of the detected object 5 . The width of the detection coil 41 is greater than or equal to one-half of the maximum width of the detected object 5. The excitation power supply unit 1 is connected to the detection coil unit 4 and the adjacent detection coils 41 are connected wit...

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 provides an inductance approach switch sensor comprises a coil detection circuit unit, a signal processing circuit unit, a detection coil unit facing a detected object, and an excitation circuit unit for supplying an excitation signal for the detection coil unit, wherein the signal processing circuit unit is connected with the output end of the coil detection circuit unit. The inductance approach switch sensor has the advantages of simple and compact structure, low cost, reliable and stable operation, wide application range, high measurement accuracy and the like.

Description

technical field [0001] The invention mainly relates to the design field of sensors, in particular to an inductive proximity switch sensor. Background technique [0002] like figure 1 As shown, the inductive proximity switch sensor uses the principle of induced eddy current. When the coil with high-frequency current is close to the metal to be measured, the high-frequency current on the coil generates an induced eddy current on the detected metal, which in turn affects the equivalent inductance of the coil. The size is related to the overlapping area of ​​the coil and the measured metal surface, the geometric size of the measured metal, the vertical distance from the coil to the measured metal surface, the geometric shape, geometric size, number of turns, electrical conductivity, magnetic permeability and other parameters of the flat coil . [0003] The effective action distance of the inductive proximity switch has a corresponding relationship with the size, thickness and...

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): G01V3/11G01P3/66
Inventor 窦峰山龙志强齐洪峰骆力周文武姜锐吴峻何宁
Owner NAT UNIV OF DEFENSE TECH
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