The relationship between QR codes and barcode scanners
Edit： Click： Times Date：2026-2-9
Barcode QR code is a graphic that uses a specific geometric shape distributed in a plane according to a certain pattern, with black and white alternating, to record data symbol information. It forms the concept of the logical basis of "0" and "1" inside the computer, and uses several geometric shapes corresponding to binary to represent textual numerical information. The graphic generated by the barcode QR code reader according to certain rules of the barcode QR code is read and converted into useful information. The barcode reader needs to go through two processes of scanning and decoding the QR code to obtain an image.
Barcode QR code readers are mainly divided into fixed barcode QR code readers and handheld barcode QR code readers according to their application environment. Scanning methods can also be divided into image-based CCD、 Scanning barcodes for laser type, camera type, and linear camera type involves two steps: scanning and decoding. At present, the mainstream scanning methods include image-based scanning and camera scanning, and decoding is the core technology of various brands of scanners. The decoding speed and accuracy will directly affect the performance of the scanner.
The fixed code reader is easy to operate and can be installed on the production line to easily read barcodes on the assembly line. Due to uncertain factors such as the clarity of barcode printing and factory scanning environment, it is necessary to be able to install and scan product barcodes from multiple angles, and quickly read product barcodes from conveyor belts in bulk. Therefore, the performance requirements for fixed barcode readers are very precise. Therefore, fixed barcode readers must have high sensitivity recognition capabilities, support automatic scanning and command control modes, and avoid unstable barcode scanning.
The main principle of a fixed code reader is to use software in the device to recognize characters in one-dimensional and two-dimensional codes. One dimensional or two-dimensional codes are arranged according to specific encoding rules and are mainly used for product tracking, production control, and automatic identification.
When choosing a fixed barcode reader, many factors should be considered, such as barcode type, barcode position, pipeline speed, distance to scan the code, vibration of the conveyor belt, installation of the bracket, sensing device, interface, and working mode. If the link is not properly matched, the code may not be scanned or the original scanning speed may not be achieved.
Handheld barcode scanners have the characteristics of mobility, small size, light weight, speed, accuracy, and ease of operation. They are widely used in supermarkets, logistics and express delivery, libraries, and other places to scan barcodes of goods and documents, greatly reducing the loss of manpower and material resources for manual barcode entry and computer manual information filling, and have great convenience.
The biggest advantage of a fixed barcode scanner is its high degree of automation, which does not require manual intervention. It is usually installed in logistics lines and the 3C manufacturing industry, and automatically scans, decodes, and uploads signals to the upper system to complete information acquisition and modification. It is the key to intelligent recognition of the entire automation system.
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