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Label detection method and device based on double sensors and handheld thermal printing head

A label detection, dual-sensor technology, applied in printing devices, printing, typewriters, etc., can solve problems such as paper detection errors and label learning failures

Active Publication Date: 2021-09-10
SHANGHAI SUMI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a label detection method, device and handheld thermal print head based on dual sensors, which solves the paper detection error and The problem of label learning failure, through hardware and algorithm solutions to improve the accuracy of paper detection

Method used

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  • Label detection method and device based on double sensors and handheld thermal printing head
  • Label detection method and device based on double sensors and handheld thermal printing head
  • Label detection method and device based on double sensors and handheld thermal printing head

Examples

Experimental program
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Effect test

Embodiment 1

[0054] The present invention provides an embodiment of a label detection method based on dual sensors, such as figure 1 shown, including:

[0055] S100 Detecting the label through the first sensor and the second sensor, and outputting the first current intensity and the second current intensity.

[0056] Specifically, such as figure 2 as shown, figure 2 It is a graph of the output current intensity of this type of sensor and the paper distance, which can be obtained from figure 2 It is observed that the distance fluctuation of 0.1mm will affect the output current of the sensor by nearly 20%, so the sensor is very sensitive to the paper distance.

[0057] In this embodiment, through a series of historical data, it is verified that the sensor output current has a linear relationship with the distance from the distance of 0mm to about 0.7mm, and this gap can just cover the conventional pressboard and sensor. Gap (the gap in which the paper floats).

[0058] The paper, that ...

Embodiment 2

[0062] Based on the above-mentioned embodiment, the parts that are the same as those in the above-mentioned embodiment in this embodiment will not be repeated one by one. This embodiment provides an embodiment of a double-sensor-based label detection method, including:

[0063] preferred, such as image 3 As shown, in step S100, the label is detected by the first sensor and the second sensor, and the first current intensity and the second current intensity are output, including:

[0064] Set the position of the first sensor and the second sensor.

[0065] The front side of the label is detected by the first sensor, and the first current intensity is output.

[0066] The reverse side of the label is detected by the second sensor, and the second current intensity is output.

[0067] Exemplary, the general structure is as follows image 3 As shown, the longitudinal distance of the sensor is represented by L, the distance between the paper and the front sensor is represented by...

Embodiment 3

[0077] Based on the above-mentioned embodiment, the parts that are the same as those in the above-mentioned embodiment in this embodiment will not be described one by one, such as image 3 , 5 As shown, this embodiment provides a label detection device based on dual sensors, including:

[0078] The first sensor 1 is separated from the front of the label by a first preset distance, and is used for detecting the front of the label, and outputs a first current intensity of the front of the label.

[0079] The second sensor 2 is separated from the reverse side of the label by a second preset distance, and is separated from the first sensor by a third preset distance, and is used to detect the reverse side of the label and output the reverse side of the label. second current intensity.

[0080] The calculation module 3 is connected with the first sensor and the second sensor, and is used for receiving the first current intensity and the second current intensity, and outputting th...

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Abstract

The invention belongs to the field of electronic equipment, and provides a label detection method and device based on double sensors and a handheld thermal printing head. The method comprises the steps of detecting a label through a first sensor and a second sensor, and outputting first current intensity and second current intensity; and obtaining a detection result of the label based on the first current intensity and the second current intensity. According to the label detection method and device based on the double sensors and the handheld thermal printing head provided by the invention, the problems of paper detection errors and label learning failures of a current handheld thermosensitive bill printing head are solved, and the paper detection precision is improved through hardware and an algorithm scheme.

Description

technical field [0001] The invention relates to the field of electronic equipment, in particular to a label detection method and device based on double sensors and a hand-held thermal print head. Background technique [0002] At present, the handheld thermal printheads on the market basically use a single infrared lamp and sensor to judge the position of the label gap through the gap between the thermal label and the difference in the reflected light intensity of the thermal label paper, and realize label detection and learning. There are some problems with label detection in this way: [0003] 1. The gap part of the label is thin and prone to creases. Irregular creases will affect the intensity of reflected light and cause errors in paper inspection. 2. The current infrared light sensor is very sensitive to the distance, and the difference of 0.1mm will also produce an intensity difference of nearly 20% in the reflected light intensity. From a microscopic point of view, th...

Claims

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Application Information

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IPC IPC(8): B41J2/32B41J3/36B41J3/407B41J29/393G01R19/25
CPCB41J2/32B41J3/36B41J3/4075B41J29/393G01R19/25
Inventor 包嘉裕林喆
Owner SHANGHAI SUMI TECH CO LTD
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