The working principle of QR code scanning equipment is mainly to scan the QR code pattern on the target object through an optical sensor, convert it into a digital signal for recognition and processing, and then transmit it to a computer or other device for related operations.

Specifically, when the scanning device aligns the optical sensor with the QR code, its internal light source emits a beam of light that shines on the QR code. QR codes are composed of black and white squares, and different combinations of squares represent different information. The receiver in the scanning device senses changes in the width of the white and black squares on the QR code, which are converted into electrical signals. Circuits within the scanning device then process and decode these electrical signals, converting them into digital information that can be recognized by computers or other devices.

In order to capture and decode QR code information more accurately, scanning devices are usually equipped with high-performance optical sensors and decoding algorithms. At the same time, in order to adapt to different scanning environments and needs, the scanning device can also perform various settings and adjustments, such as scanning speed, scanning angle, scanning distance, etc.

QR code scanning equipment uses optical sensing technology and digital signal processing technology to achieve rapid and accurate recognition of QR codes, providing a convenient and efficient data input method for various application scenarios.