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Double-camera bar code reading module and bar code reading method

A barcode and module technology, applied in the field of barcode reading, can solve the problems of high cost of lens components, affecting equipment life, temperature rise, etc., and achieve the effect of reducing excessive load and high temperature, simple distance measurement method, and reduced volume

Active Publication Date: 2022-01-04
FUJIAN NEWLAND AUTO ID TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For barcode reading equipment, it is necessary to have a large recognizable range. The existing technology usually adopts two solutions, one is a barcode scanner with a liquid lens or a mechanically adjustable focal length lens, but the cost of the lens component of this solution is high
Another solution is to use a combination of dual modules, splicing two modules responsible for the far and near areas up and down, and sharing a single shell. However, because this solution combines two modules, it has large volume and low power consumption. Big disadvantage, and because of the large number of electronic components, the temperature is easy to rise and affect the life of the equipment

Method used

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  • Double-camera bar code reading module and bar code reading method
  • Double-camera bar code reading module and bar code reading method
  • Double-camera bar code reading module and bar code reading method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, a dual-camera barcode reading module includes:

[0044] Housing 1: The housing 1 is provided with a first lens area 11 , a second lens area 12 , a first supplementary light area 13 , a second supplementary light area 14 , and an aiming area 15 , which pass through the housing.

[0045] Such as figure 2 As shown, the front panel 2: located at the front end of the housing 1, the front panel 2 is respectively provided with a first lens window 21, a second lens window 22, a first fill light Window 23 , second fill light window 24 , aiming window 25 .

[0046] The first circuit board 3 : located at the rear end of the housing 1 , detachably connected with the housing 1 ; the first circuit board 3 includes a first lens assembly 31 and a processor 32 . The first lens assembly 31 includes a lens, a lens sleeve, a lens base, and an image sensor located in the lens base. The lens is rotated to adjust the focus through threads, and the lens base is f...

Embodiment 2

[0062] A barcode reading method is characterized in that it comprises the steps of:

[0063] S1: the aiming component 43 emits an aiming light pattern to the target surface;

[0064] S2: The second lens assembly 44 acquires a first target image with an aiming light pattern;

[0065] S3: Calculate the proportion of pixels occupied by the aiming light pattern in the first target image, and when the proportion value is greater than a first threshold, the processor 32 uses the first target surface image obtained in step S2 to decode ; When the proportional value is less than the second threshold, enter step S4; when the proportional value is less than the first threshold and greater than the second threshold, enter step S5.

[0066] In this embodiment, the depth range of the myopia scene is 0-70cm, and the aiming light pattern occupies a relatively large proportion of pixels in the entire image. Pixel scale is relatively small. The depth range of the far and near vision scene o...

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Abstract

The invention relates to a double-camera bar code reading module and a bar code reading method. According to the double-camera bar code reading module, a double-lens assembly is adopted, so that a readable field depth range is expanded; a heat dissipation assembly attached to a processor is arranged, so that the heat dissipation efficiency is improved, and overheating of equipment is avoided; three circuit boards are arranged in an overlapped mode, and the circuit boards are connected with each other through data connecting lines to perform data transmission and signal control, so that a space utilization rate is maximized, and the size of the module is reduced; a coated aiming lens is obliquely arranged and matched with a laser transmitter, so that distance measurement is achieved, and the problem of a secondary reflection aiming point is solved; and a target distance is judged according to a proportion value of an aiming pattern in the whole image, and then a corresponding lens is called to obtain the target image, so that a distance measurement method is simple and efficient.

Description

technical field [0001] The invention relates to the field of barcode reading, in particular to a dual-camera barcode reading module and a barcode reading method. Background technique [0002] Barcode reading equipment refers to equipment used to read barcode information. It uses an optical device to convert the space information of the bar code into electronic information, and then translates it into corresponding data information by a dedicated decoder. Because of its fast input speed, high reliability, large amount of collected information, and flexible and practical features, barcode reading equipment has been widely used in many fields such as commodity circulation, book management, post and telecommunications management, and banking systems. [0003] For barcode reading equipment, it is necessary to have a larger recognizable range. The prior art usually adopts two solutions, one is a barcode scanner with a liquid lens or a mechanically adjustable focal length lens, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/10G06K7/14
CPCG06K7/10732G06K7/10831G06K7/1443G06K7/10801
Inventor 林小章陈又佳林盛彬陈圣聪许健
Owner FUJIAN NEWLAND AUTO ID TECH CO LTD
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