CN117332798A - Bar code scanning method, module, storage medium and bar code scanner - Google Patents

Abstract

The invention relates to the field of barcode scanning technology, and in particular refers to a barcode scanning method, module, storage medium and barcode scanner. The invention includes the following steps: scanning a target object in a warehouse with a laser beam and capturing a barcode image of the target object; The barcode image is processed and analyzed to identify the encoded information in the barcode; the relative position between the scanner and the target object is calculated, and the distance between the scanner and the target object is obtained; according to the size of the target object and the According to the distance between the scanner and the target, the scanning range and parameters are adaptively adjusted. The barcode scanning method of the present invention combines laser scanning, image processing and analysis, can efficiently and accurately scan and identify the barcode information of the target object, and has an adaptive adjustment function, which can adapt to the size and distance of different target objects and improve the scanning effect. and identification accuracy.

Description

A barcode scanning method, module, storage medium and scanner

Technical field

The invention relates to the field of barcode scanning technology, and in particular, to a barcode scanning method, module, storage medium and barcode scanner.

Background technique

Although computers are used in traditional warehouse management, data are still recorded on paper and then manually entered into the computer for collection and statistical organization. This not only causes a lot of waste of human resources, but also results in slow data entry and low accuracy due to human factors.

With the continuous development of enterprise scale, the types and quantities of materials managed by warehouses are increasing, and the frequency of incoming and outgoing warehouses has increased dramatically. Warehouse management operations have also become very complex and diversified. The traditional manual warehouse operation mode and data collection method have high labor costs. Low work efficiency and low accuracy have made it difficult to meet the fast and accurate requirements of warehouse management. Enterprises cannot accurately connect inventory data in a timely manner, which seriously affects the operational efficiency of the enterprise.

Using a barcode scanner to scan goods is an important means in large warehouses, but the existing barcode scanner cannot determine whether the distance between the barcode scanner and the barcode is within the effective distance and depth of field range, and perform corresponding Adjustment, scanning efficiency is low.

Contents of the invention

In order to solve the above problems, the main purpose of the present invention is to provide a barcode scanning method, module, storage medium and barcode scanner, which combines laser scanning, image processing and analysis, and can efficiently and accurately scan and identify the barcode information of the target object. , and has an adaptive adjustment function that can adapt to the size and distance of different targets, improving the scanning effect and recognition accuracy.

In order to achieve the above objects, the technical solution adopted by the present invention is:

A barcode scanning method includes the following steps:

Scan the target objects in the warehouse with a laser beam and capture the barcode image of the target object;

Process and analyze the barcode image to identify the encoded information in the barcode;

Calculate the relative position between the scanner and the target object, and obtain the distance between the scanner and the target object;

The scanning range and parameters are adaptively adjusted according to the size of the target and the distance between the scanner and the target.

Further, processing and analyzing the barcode image specifically includes the following steps:

Preprocess the barcode image, including noise removal and image enhancement;

The preprocessed barcode image is decoded through the barcode recognition algorithm and the encoded information in the barcode is extracted.

Further, the calculation of the relative position between the code scanner and the target object, and obtaining the distance between the code scanner and the target object specifically includes:

A ranging optical path is established between the laser beam emitter and the laser beam receiver through a range finder. When the laser beam irradiates the target, the laser beam receiver receives the reflected laser signal and calculates the scan value through the range finder. The distance between the encoder and the target.

Further, the scanning range and parameters are adaptively adjusted according to the size of the target and the distance between the scanner and the target, specifically including:

If the area of the target is greater than the preset area value and/or the distance from the scanner is less than the preset distance value, increase the scanning range;

If the area of the target is less than the preset area value and/or the distance from the scanner is greater than the preset distance value, the scanning range is reduced.

Further, the laser in the laser beam adopts laser in the visible light band or near-infrared band.

Further, the barcode includes one-dimensional barcode and two-dimensional barcode.

A barcode scanning module includes: a program, the program is configured to execute the barcode scanning method as described above.

Further, the barcode scanning module includes: a processor and a memory, wherein the program is stored in the memory and configured to be executed by the processor.

A storage medium has a computer program stored thereon, and the computer program is used by a processor to execute the barcode scanning method as described above.

A code scanner is used to perform the barcode scanning method as described above.

The beneficial effects of the present invention are:

The invention scans the target object with a laser beam, can quickly capture the barcode image of the target object, improves the scanning efficiency, processes and analyzes the barcode image, and can accurately identify the encoding information in the barcode. By calculating the relative position between the scanner and the target, the distance between the scanner and the target can be determined. This step can help adjust the scanning range and parameters to better adapt to targets of different sizes. The scanning range and parameters can be automatically adjusted according to the size of the target and the distance between the scanner and the target. This ensures that clear and accurate barcode images can be obtained under different circumstances and improves the success rate of recognition. In short, the barcode scanning method of the present invention combines laser scanning, image processing and analysis, can efficiently and accurately scan and identify the barcode information of the target object, and has an adaptive adjustment function, which can adapt to the size and distance of different target objects, improve Scanning effect and recognition accuracy.

Description of drawings

Figure 1 is a flow chart of the barcode scanning method of the present invention.

Detailed ways

Below, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, on the premise that there is no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. .

Please refer to Figure 1. The main purpose of the present invention is to provide a barcode scanning method, module, storage medium and barcode scanner that can adapt to the size and distance of different targets and improve the scanning effect and recognition accuracy.

It should be noted that a barcode scanner is also called a barcode reader, a barcode scanner, a barcode scanner, a barcode scanner and a barcode reader. It is a reading device used to read the information contained in barcodes. It uses optical principles to decode the content of the barcode and then transmit it to a computer or other device through a data cable or wirelessly. QR code scanners are widely used in commercial POS cashier systems, express delivery, warehousing, logistics, books, medicine and other fields.

Embodiment 1 of the present invention provides a barcode scanning method, which includes the following steps:

Scan the target object in the warehouse through the laser beam and capture the barcode image of the target object; specifically: first, install the laser beam emitter on the scanner, and ensure that the laser beam has sufficient power and a suitable wavelength. Then, the laser beam is used to scan the target object. When the laser beam irradiates the target object, the principle of light scattering is used to focus the scattered light onto the photodiode to generate a barcode image.

Wherein, the laser in the laser beam adopts laser in the visible light band (400-700 nanometers) or near-infrared band (700-1500 nanometers). It should be emphasized that by using a laser beam to scan the target, high-precision barcode image capture can be achieved. Laser beams provide higher resolution and clarity, reducing the chance of decoding errors. Using lasers in the visible light band or near-infrared band, the appropriate waveband can be selected for scanning according to different target object properties and working environment. The visible light band is suitable for most objects, while the near-infrared band is suitable for objects with special surface properties or greater light interference. Using a laser beam to scan the target can reduce the impact of the light environment on scanning. The narrow and focused nature of the laser beam reduces interference from background light, improving image quality and decoding accuracy. This barcode scanning method has the advantages of high precision, multi-band selection, fast scanning and strong anti-interference ability; it can be used in warehouse management and barcode recognition and other fields to improve work efficiency and accuracy.

Wherein, the barcode includes one-dimensional barcode and two-dimensional barcode.

The barcode image is processed and analyzed to identify the encoded information in the barcode; specifically: the captured barcode image can be processed and analyzed using an image processing algorithm. First, the image needs to be preprocessed, including noise removal, image enhancement and other steps. Then, the processed image is decoded through the barcode recognition algorithm and the encoded information in the barcode is extracted.

Calculate the relative position between the scanner and the target object, and obtain the distance between the scanner and the target object; specifically: by using the ranging function of the laser beam, the distance between the scanner and the target object can be determined. A ranging optical path is established between the laser beam transmitter and the receiver through a range finder. When the laser beam irradiates the target, the receiver receives the reflected laser signal, and the range finder can calculate the scanner The distance to the target.

According to the size of the target and the distance between the scanner and the target, the scanning range and parameters are adaptively adjusted. Specifically: according to the size of the target and the distance from the scanner, the scanning can be adaptively adjusted as needed. scope and parameters. For example, if the target is larger and closer to the scanner, the scanning range can be increased to ensure that the barcode image of the target is completely captured. Conversely, if the target is smaller or farther away from the scanner, the scanning range can be reduced to improve scanning accuracy and efficiency.

In the above solution, through laser beam scanning, image processing and ranging functions, long-distance scanning of targets in the warehouse can be achieved, and the scanning range and parameters can be adaptively adjusted by identifying the encoded information in the barcode to meet different goals. material needs. The specific technical effects are as follows:

1. Efficient and accurate scanning: Scanning the target object with a laser beam can quickly capture the barcode image of the target object, improve scanning efficiency, and process and analyze the barcode image to accurately identify the encoded information in the barcode.

2. Relative position calculation: By calculating the relative position between the scanner and the target, the distance between the scanner and the target can be determined. This step can help adjust the scanning range and parameters to better adapt to targets of different sizes.

3. Adaptive adjustment of scanning range and parameters: The scanning range and parameters can be automatically adjusted according to the size of the target and the distance between the scanner and the target. This ensures that clear and accurate barcode images can be obtained under different circumstances and improves the success rate of recognition.

In short, the barcode scanning method described in this application combines laser scanning, image processing and analysis, can efficiently and accurately scan and identify the barcode information of the target object, and has an adaptive adjustment function, which can adapt to the size and distance of different targets, improve Scanning effect and recognition accuracy.

The processing and analysis of the barcode image described in this embodiment specifically includes the following steps:

Preprocess the barcode image, including noise removal and image enhancement;

The preprocessed barcode image is decoded through the barcode recognition algorithm and the encoded information in the barcode is extracted.

In the above steps, by performing noise removal and image enhancement processing on the barcode image, the accuracy and robustness of the barcode recognition algorithm can be improved. Noise removal can eliminate interference points or other irrelevant pixels in the image, thereby reducing the possibility of recognition errors. Image enhancement can improve the contrast, brightness, clarity and other aspects of the image, making the barcode more clear and legible, which is beneficial to the subsequent decoding process. The preprocessed barcode image is input into the barcode recognition algorithm, and the encoded information in the barcode can be extracted through the decoding process. The barcode recognition algorithm is a pattern recognition technology that determines the encoding information of the barcode by matching features in the image with known barcode encoding rules. It has the advantages of high decoding accuracy and fast speed. In general, through the two steps of image preprocessing and barcode decoding, the encoding information in the barcode image is extracted. The accuracy and robustness of the recognition algorithm can be improved through pre-processing methods such as noise removal and image enhancement; while the barcode decoding algorithm can effectively extract the encoding information in the barcode image. Suitable for scanning large items in large warehouses and ultra-long distance (10-20 meters).

In this embodiment, calculating the relative position between the code scanner and the target object, and obtaining the distance between the code scanner and the target object specifically includes:

A ranging optical path is established between the laser beam emitter and the laser beam receiver through a range finder. When the laser beam irradiates the target, the laser beam receiver receives the reflected laser signal and calculates the scan value through the range finder. The distance between the encoder and the target.

It should be noted that this embodiment can calculate the distance between the code scanner and the target object by measuring the time from when the laser beam is emitted from the code scanner to when it is reflected back from the target object, thereby achieving relative position positioning. This technology can receive and calculate the distance immediately after the laser beam is irradiated on the target, achieving real-time requirements.

In this embodiment, the scanning range and parameters are adaptively adjusted according to the size of the target and the distance between the scanner and the target, specifically including:

If the area of the target is greater than the preset area value and/or the distance from the scanner is less than the preset distance value, the scanning range will be increased; the purpose of this limitation is that when the target is larger or the distance is closer, the system will Automatically expand the scanning range to ensure that the barcode of the target object can be completely scanned;

If the area of the target is less than the preset area value and/or the distance from the scanner is greater than the preset distance value, the scanning range is reduced; the purpose of this limitation is that when the target is small or far away, the system The scanning range is automatically narrowed to improve scanning accuracy and efficiency.

Through the above adaptive adjustment method, this barcode scanning method can adapt to different target sizes and distances in different scenarios, thereby effectively improving the scanning effect, increasing the success rate of scanning, reducing the possibility of misidentification, and making it better to meet user needs.

Embodiment 2 of the present invention provides a barcode scanning module, which includes a program for executing the barcode scanning method described in Embodiment 1.

The barcode scanning module in this embodiment includes: a processor and a memory, wherein the program is stored in the memory and configured to be executed by the processor.

Embodiment 3 of the present invention provides a storage medium on which a computer program is stored, and the computer program is executed by a processor as described in the barcode scanning method in Embodiment 1.

Embodiment 4 of the present invention provides a code scanner, which is used to perform the barcode scanning method as described in Embodiment 1.

Compared with the prior art, the beneficial effects of the present invention are at least as follows:

The invention scans the target object with a laser beam, can quickly capture the barcode image of the target object, improves the scanning efficiency, processes and analyzes the barcode image, and can accurately identify the encoding information in the barcode. By calculating the relative position between the scanner and the target, the distance between the scanner and the target can be determined. This step can help adjust the scanning range and parameters to better adapt to targets of different sizes. The scanning range and parameters can be automatically adjusted according to the size of the target and the distance between the scanner and the target. This ensures that clear and accurate barcode images can be obtained under different circumstances and improves the success rate of recognition. In short, the barcode scanning method of the present invention combines laser scanning, image processing and analysis, can efficiently and accurately scan and identify the barcode information of the target object, and has an adaptive adjustment function, which can adapt to the size and distance of different target objects, improve Scanning effect and recognition accuracy.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form; any person of ordinary skill in the industry can smoothly implement the present invention according to the description and drawings shown in the description and above; however, any Those skilled in the art who are familiar with the art can make slight changes, modifications and equivalent changes using the technical content disclosed above without departing from the scope of the technical solution of the present invention; at the same time, Any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. A method of bar code scanning comprising the steps of:

scanning a target object in the warehouse through a laser beam, and capturing a bar code image of the target object;

processing and analyzing the bar code image to identify the coding information in the bar code;

calculating the relative position between the code scanner and the target object, and obtaining the distance between the code scanner and the target object;

and adaptively adjusting the scanning range and parameters according to the size of the target object and the distance between the code scanner and the target object.

2. The barcode scanning method of claim 1, wherein: the processing and analyzing the bar code image specifically comprises the following steps:

preprocessing the bar code image, including noise removal and image enhancement;

and decoding the preprocessed bar code image through a bar code recognition algorithm, and extracting the coding information in the bar code.

3. The barcode scanning method of claim 1, wherein: the calculating the relative position between the code scanner and the target object and obtaining the distance between the code scanner and the target object specifically comprises the following steps:

a distance measuring light path is established between the laser beam emitter and the laser beam receiver through the distance measuring device, after the laser beam irradiates the target object, the laser beam receiver receives the reflected laser signal, and the distance between the code scanning device and the target object is calculated through the distance measuring device.

4. The barcode scanning method of claim 1, wherein: the self-adaptive adjustment of the scanning range and parameters according to the size of the target object and the distance between the code scanner and the target object specifically comprises the following steps:

if the area of the target object is larger than a preset area value and/or the distance between the target object and the code scanner is smaller than a preset distance value, the scanning range is increased;

and if the area of the target object is smaller than the preset area value and/or the distance between the target object and the code scanner is larger than the preset distance value, reducing the scanning range.

5. The barcode scanning method of claim 1, wherein: the laser in the laser beam adopts laser in a visible light wave band or a near infrared wave band.

6. The barcode scanning method of claim 1, wherein: the bar code includes a one-dimensional bar code and a two-dimensional bar code.

7. A barcode scanning module, comprising: a program comprising instructions for performing the barcode scanning method of any one of claims 1-6.

8. The barcode scanning module of claim 7, comprising: a processor and a memory, wherein the program is stored in the memory and configured to be executed by the processor.

9. A storage medium having a computer program stored thereon, characterized by: the computer program is executed by a processor to perform the barcode scanning method of any one of claims 1-6.

10. The utility model provides a sweep sign indicating number ware which characterized in that: the code scanner is used for executing the bar code scanning method according to any one of claims 1 to 6.