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A Positioning Method Based on Touch Screen Application Iterative Algorithm Imaging Reconstruction

An iterative algorithm and touch screen technology, applied in the field of sensor applications, can solve the problems of low light transmittance of the touch screen, and achieve the effects of expanding the touch conditions, simple structure and easy material acquisition.

Active Publication Date: 2022-03-25
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the image reconstruction methods for touch displays in the prior art judge the change of the touch position by detecting the ground signal, which limits the touch material, and the capacitive sensor electrodes used are distributed on the surface of the touch screen, so that the transparent area within the display range of the touch screen low light rate

Method used

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  • A Positioning Method Based on Touch Screen Application Iterative Algorithm Imaging Reconstruction
  • A Positioning Method Based on Touch Screen Application Iterative Algorithm Imaging Reconstruction
  • A Positioning Method Based on Touch Screen Application Iterative Algorithm Imaging Reconstruction

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Embodiment 1

[0037] Embodiment 1 Positioning method based on touch screen application iterative algorithm imaging reconstruction

[0038] This embodiment is a positioning method based on the iterative algorithm imaging reconstruction of the touch screen application, using a capacitive sensor with eight rectangular sheet electrodes 3, and the eight rectangular sheet electrodes 3 are arranged in a ring and printed on the side surface of the touch screen 1 at intervals of 0.5 mm , connected to the external data acquisition system through the electrode lead wire 4, a shielding layer 2 is arranged on the outside of the electrode 3, and the materials of the electrode 3 and the electrode lead wire 4 are copper materials.

[0039] The positioning method based on the touch screen application iterative algorithm imaging reconstruction is carried out in the following steps:

[0040] (1) Detect the capacitance signal of the capacitive sensor, the specific measurement process is:

[0041] ① Number the...

Embodiment 2

[0052] Embodiment 2 Positioning method based on touch screen application iterative algorithm imaging reconstruction

[0053] This embodiment is basically the same as Embodiment 1, except that the position of the detection touch screen 1 is different. What this embodiment detects is the capacitive signal above the touch screen 1. The detection results are shown in Table 2, and the image reconstruction results are shown in Table 2. Figure 4 shown.

[0054] Table 2 Capacitive signal detection results above the touch screen

[0055]

Embodiment 3

[0056] Embodiment 3 Positioning method based on touch screen application iterative algorithm imaging reconstruction

[0057] This embodiment is basically the same as Embodiment 1, except that the position of the detection touch screen 1 is different. What this embodiment detects is the capacitive signal below the touch screen 1. The detection results are shown in Table 3, and the image reconstruction results are shown in Table 3. Figure 5 shown.

[0058] Table 3 Capacitive signal detection results at the bottom of the touch screen

[0059]

[0060]

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Abstract

The invention belongs to the field of sensor applications, and specifically discloses a positioning method for imaging reconstruction based on an iterative algorithm applied to a touch screen, using a capacitive sensor with eight rectangular sheet electrodes. The method includes: detecting capacitance signals, collecting capacitance signals and sending them to a host computer and The upper computer analyzes the capacitance signal, and uses an iterative algorithm for image reconstruction. The positioning method based on the iterative algorithm imaging and reconstruction of the touch screen provided by the present invention has simple and convenient operation, fast image reconstruction speed, and does not limit the touch material. In addition, the capacitive sensor has a simple and ingenious structure, is convenient to manufacture, and has a high transmittance. The invention is suitable for image reconstruction of capacitive sensors.

Description

technical field [0001] The invention belongs to the technical field of sensor applications, and relates to the technical field of capacitive sensor applications, in particular to a positioning method for imaging reconstruction based on touch screen application iterative algorithms. Background technique [0002] Capacitance imaging technology began to develop in the 1980s. Through the use of specially designed sensitive space array electrodes, the information of the sensitive field is obtained in a non-invasive or non-contact method, and the distribution of the medium in a certain section in the field is reproduced by the method of image reconstruction. State, and give the results of medium distribution in the form of images, among them, Electrical Capacitance Tomography (ECT) is a new monitoring technology that can visualize the distribution of medium in pipeline space. [0003] The basic principle of ECT is to install capacitive sensors around industrial pipelines to measur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/00G06F3/044G06F3/041G01N27/22
CPCG06T11/00G06F3/044G06F3/0418G01N27/22
Inventor 高硕孙世杰吕瑞函黄安彪徐立军
Owner BEIHANG UNIV
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