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Membrane thickness detection device

A detection device and film thickness technology, applied in electromagnetic measurement device, electric/magnetic thickness measurement and other directions, can solve the problem of inability to accurately detect the thickness of the film, and achieve the effect of eliminating detection errors and accurate detection results

Active Publication Date: 2016-02-10
WEIHAI HUALING OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of this application is to provide a film thickness detection device to solve the problem that the detection device in the prior art cannot accurately detect the thickness of the film

Method used

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Embodiment Construction

[0026] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0027] It should be noted that the terminology used here is only used to describe specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0028] As introduced in the background, the detection device in the prior art cannot accurately measure the th...

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Abstract

The application provides a membrane thickness detection device, comprising a common electrode, at least one detection electrode and a detection circuit, wherein each detection electrode and the common electrode are arranged oppositely and at intervals in a first direction; the first common surface of the common electrode and the first detection surface of each detection electrode are opposite, and form a detection channel therebetween for a membrane to be measured; the detection circuit is in electric connection with each detection electrode, and comprises an error elimination unit used for eliminating noise signals, wherein the noise signals are electric signals on the detection electrode when a voltage is not applied to the common electrode. The membrane thickness detection device utilizes the error elimination unit to eliminate noise signals on the detection electrode, furthermore eliminates detection errors caused by the noise signals, and makes detection results more accurate.

Description

technical field [0001] The present application relates to the technical field of film thickness detection, in particular, to a film thickness detection device. Background technique [0002] On-line continuous thickness measurement of sheet-like items, such as paper, bills, plastic films, textile items, etc., is playing an increasingly important role in the production, testing, processing, and recycling of their products. At present, the detection technology of film thickness includes Hall, reflective ultrasonic, transmissive ultrasonic, electromagnetic induction, eddy current and other technologies. However, the detection devices corresponding to these technologies are large in size and high in cost, which is not conducive to the application of these technologies. [0003] In recent years, the detection technology of film thickness through electrostatic induction between electrodes has been continuously researched and explored. For example, the patent of publication number ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/06
Inventor 姜利
Owner WEIHAI HUALING OPTO ELECTRONICS CO LTD
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