The working principle of several barcode scanners

The working principle of several barcode scanners

In the manufacturing production line, automatic control or tracking of WIP, or automatic sorting of goods on the conveyor belt, accurate and reliable and unattended barcode identification means are needed.

The fixed barcode scanner can have various external dimensions, scanning forms, reading resolution, scanning distance, scanning area, reading depth of field, installation mode and interface mode. It can also form a barcode scanning network and work in groups. Combined with sensors and a variety of advanced intelligent analysis technologies, it can complete any complex barcode automatic recognition work in various environments, And transmit data or signal to computer or PLC. The specific solution is based on the specific application environment, requirements and constraints. The following describes the working principle of several barcode scanners.

Counter barcode scanning and reading: in retail chain stores, convenience stores, bookstores or pharmacies, the cashier usually takes the goods to the counter for barcode scanning. Desktop barcode scanners are compact, usually placed on the cashier counter, connected with the POS system. It forms a number of cross network scanning lines through a large scanning window, so as to realize omni-directional barcode scanning. The operator does not need to carefully adjust the direction of the barcode, but also can quickly and easily read the barcode of goods, speeding up the checkout process.

Hand held barcode scanning and reading: hand held barcode scanner is the most commonly used and flexible barcode scanning and recognition equipment, generally including laser type, linear CCD type and matrix CCD type. They are suitable for scanning objects of different sizes and shapes. The operator can work at a fixed station, or connect to a handheld data terminal