CN111539235A - Method for preventing bar code from being scanned by two-dimensional bar code scanning engine by mistake and decoder applying same - Google Patents

Abstract

The invention provides a method for preventing a two-dimensional code scanning engine from scanning a barcode by mistake and a decoder using the same. The code scanning is not triggered when the trigger button is pressed and released, but the code scanning is triggered after the set time expires. , so that the user can aim the aiming light at the barcode they want to scan during the delay period, and can achieve 100% accurate barcode scanning, effectively solving the problem of the two-dimensional code scanning engine scanning the barcode incorrectly, thereby improving the decoding process. precision.

Description

A method for preventing a two-dimensional code scanning engine from scanning a barcode by mistake and a decoder using the same

technical field

The invention relates to the technical field of barcode scanning, in particular to a method for preventing a two-dimensional code scanning engine from scanning a barcode by mistake and a decoder using the same.

Background technique

At present, the mainstream QR code decoder mainly consists of three parts: camera module for photosensitive imaging, lighting module and aiming light module. Among them, the aiming light is mainly used to align the target barcode, so that the barcode imaging can be located in the center of the camera, thereby improving the decoding success rate; the camera of photosensitive imaging is mainly used for barcode image acquisition, and then the captured image is passed to the decoding library, The decoding library scans the image and converts the barcode in the image into the corresponding content according to the barcode rules. Because the image is collected by taking pictures, it is difficult for the decoding library to decode accurately when there are multiple dense barcodes in the image.

At present, there are two main ways to deal with this problem. The first method is to set a central window in the decoding library, the photosensitive camera captures a picture, and the decoding library will only decode the barcode at the position of the central window. This method can improve the decoding accuracy to a certain extent, but it is wrong. The probability of scanning is still very high; the second method is to record the position of the aiming light on each 2D decoding engine, and then the decoding library only solves the barcode covered by the position of the aiming light, which can greatly improve the decoding accuracy.

However, neither of the above two methods can solve the mistaken scanning situation when the user starts scanning the code for the first time. For example, if the user wants to scan the third barcode in the picture, the user holds the scanning device and aligns the third barcode, and then the user triggers the scan, but when the user presses the scan button to trigger the scan, the aiming light or the center window It is not necessarily on the barcode that the user wants to scan, which will still cause false scans.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the problem of the two-dimensional code scanning engine mistakenly scanning the barcode in the prior art, and propose a method for preventing the two-dimensional code scanning engine from mistakenly scanning the barcode and a decoder using the same.

In order to achieve the above purpose, the present invention adopts the following technical solutions: a method for avoiding the mistaken scanning of barcodes by a two-dimensional code scanning engine, comprising the following steps:

S1. The user sets the scan delay time;

S2. The user presses and releases the scan code button;

S3. When the delay time starts, the scanning engine emits aiming light;

S4. The user aligns the aiming light to the barcode;

S5. When the delay time expires, the scan code is triggered;

S6. Scan the code successfully.

Preferably, in step S2, after the user presses and releases the scan code button, the Press event and the Timer_start event are triggered. The Press event is to control the two-dimensional code scan engine to emit aiming light without scanning the code, and the Timer_start event is to start the timing operation.

Preferably, in step S5, a Timer_end event is triggered after the delay time expires, and the Timer_end event is to control the two-dimensional code scanning engine to perform a code scanning operation.

Another aspect of the present invention is a decoder applying the above-mentioned method for preventing a two-dimensional code scanning engine from scanning a barcode by mistake. The decoder includes a camera module, an aiming light module, a trigger module, a control module and a timing module. The output end of the control module is electrically connected with the input end of the control module, the output end of the control module is electrically connected with the camera module and the aiming light module respectively, and the control module and the timing module are electrically connected in both directions; when the trigger button is pressed and released, The control module controls the aiming light module to emit aiming light, and at the same time the control module controls the timing module to start timing, and when the timing of the timing module reaches a preset value, the control module controls the camera module to collect barcode images.

Preferably, the decoder further includes a decoding module, and the input end of the decoding module is electrically connected with the output end of the camera module. Further, the output end of the decoding module is electrically connected with the input end of the control module.

Compared with the prior art, the beneficial effect of the present invention is: by pressing and releasing the trigger button, the scanning code is not triggered, but the scanning code is triggered after the set time expires, so that the user can be in the delayed period of time. Aiming the aiming light at the barcode you want to scan in time can achieve 100% accurate barcode scanning, which effectively solves the problem of the 2D barcode scanning engine scanning the barcode incorrectly, thereby improving the decoding accuracy.

Description of drawings

FIG. 1 is a schematic structural diagram of a decoder according to an embodiment of the present invention.

Detailed ways

In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are given in conjunction with the embodiments.

A method for preventing a two-dimensional code scanning engine from scanning a barcode by mistake in the present invention comprises the following steps:

S1. The user sets the scan delay time;

S2. The user presses and releases the scan code button;

S3. When the delay time starts, the scanning engine emits aiming light;

S4. The user aligns the aiming light to the barcode;

S5. When the delay time expires, the scan code is triggered;

S6. Scan the code successfully.

Wherein, in step S2, after the user presses and releases the scan code button, the Press event and the Timer_start event are triggered, the Press event is to control the two-dimensional code scan engine to emit aiming light without scanning the code, and the Timer_start event is to start the timing operation; in step S5 After the delay time expires, the Timer_end event is triggered, and the Timer_end event controls the QR code scanning engine to scan the code. Press event, Timer_start event and Timer_end event are all software control events. When pressing and releasing the scan button to trigger the Press event, the software part controls the two-dimensional code scanning engine to emit aiming light without scanning the code; When the scan code button triggers the Timer_start event at the same time, the software part starts the timing operation; when the timing time reaches the preset delay time and triggers the Timer_end event, the software part controls the two-dimensional code scanning engine to scan the code.

Please refer to FIG. 1, another aspect of the present invention is a decoder applying the above-mentioned method for preventing a two-dimensional code scanning engine from scanning a barcode by mistake, including a camera module 1, an aiming light module 2, a trigger module 3, a control module 4 and a timing module 5. The trigger module 3 includes a trigger button 31, the output end of the trigger button 31 is electrically connected with the input end of the control module 4, and the output end of the control module 4 is electrically connected with the camera module 1 and the aiming light module 2 respectively, and the control module 4 Two-way electrical connection with the timing module 5; when the trigger button 31 is pressed and released, the control module 4 controls the aiming light module 2 to emit the aiming light, and the control module 4 controls the timing module 5 to start timing, and when the timing module 5 timing reaches the predetermined time. When the value is set, the control module 4 controls the camera module 1 to collect barcode images.

Preferably, the decoder further includes a decoding module 6 , and the input end of the decoding module 6 is electrically connected to the output end of the camera module 1 to receive the barcode image transmitted by the camera module 1 . Further, the output end of the decoding module 6 is electrically connected with the input end of the control module 4 to send decoding success information to the control module 4, so that the control module 4 controls the camera module 1 to stop barcode image collection.

In actual use, the control module 4 includes a storage unit, which is used to record the preset scan code delay time; the function of the timing module 5 is realized by software, and the timing module 5 can also be a sub-module of the control module 4 .

Working process: First, the user sets the scan code delay time, then presses and releases the trigger button 31, the control module 4 controls the aiming light module 2 to emit the aiming light, and at the same time the control module 4 controls the timing module 5 to start timing, and the user presets the time. Aim the aiming light at the barcode you want to scan in the delay time, when the timing module 5 reaches the preset value, the control module 4 controls the camera module 1 to collect the barcode image, and the decoding module 6 receives the barcode image transmitted by the camera module 1 And after the decoding is successful, the decoding success information is sent to the control module 4, and the control module 4 controls the camera module 1 to stop the collection of barcode images after receiving the decoding success information.

A method of preventing a two-dimensional code scanning engine from scanning a barcode by mistake and a decoder using the same of the present invention, the code scanning is not triggered when the trigger button is pressed and released, but the code scanning is triggered after the set time expires. , so that the user can aim the aiming light at the barcode they want to scan during the delay period, and can achieve 100% accurate barcode scanning, effectively solving the problem of the two-dimensional code scanning engine scanning the barcode incorrectly, thereby improving the decoding process. precision.

The present invention has been described by the above-mentioned related embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention belong to the scope of patent protection of the present invention.

Claims (6)

1. a method for avoiding two-dimensional code scanning engine scanning barcode by mistake, is characterized in that, comprises the following steps: S1. The user sets the scan delay time; S2. The user presses and releases the scan code button; S3. When the delay time starts, the scanning engine emits aiming light; S4. The user aligns the aiming light to the barcode; S5. When the delay time expires, the scan code is triggered; S6. Scan the code successfully. 2. a kind of method that avoids two-dimensional code scanning engine to scan barcode by mistake as claimed in claim 1, it is characterized in that, in step S2, after user presses and releases scan code button, trigger Press event and Timer_start event, described Press event In order to control the two-dimensional code scanning engine to emit aiming light without scanning the code, the Timer_start event is to start the timing operation. 3. a kind of method that avoids two-dimensional code scanning engine to scan barcode by mistake as claimed in claim 1, it is characterized in that, trigger Timer_end event after delay time finishes in step S5, described Timer_end event is to control two-dimensional code scanning engine to carry out. Scan code operation. 4. a decoder of applying the method for avoiding two-dimensional code scanning engine scanning barcode by mistake as described in any one of claims 1 to 3, is characterized in that, comprises camera module, aiming light module, trigger module, control module and Timing module, the trigger module includes a trigger button, the output end of the trigger button is electrically connected with the input end of the control module, and the output end of the control module is electrically connected to the camera module and the aiming light module respectively. The control module and the timing module are electrically connected in both directions; when the trigger button is pressed and released, the control module controls the aiming light module to emit aiming light, and at the same time the control module controls the The timing module starts timing, and when the timing module reaches a preset value, the control module controls the camera module to collect barcode images. 5 . The decoder according to claim 4 , further comprising a decoding module, the input terminal of the decoding module is electrically connected to the output terminal of the camera module. 6 . 6 . The decoder of claim 5 , wherein the output end of the decoding module is electrically connected to the input end of the control module. 7 .

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