Bar code scanners, also known as bar code readers and bar code scanners and so on. It is used to read the bar code information contained in the reading device, the use of optical principles, the contents of the bar code decoding through the data cable or wireless transmission to the computer or other devices. Widely used in supermarkets, logistics and express delivery, libraries and other scanning products, documents bar code.
More than 40 years ago, the birth of barcode scanners helped Target, Wal-Mart and other retail giants rise rapidly. Initially, bar code systems were expensive and technically complex, but offered great convenience to those who had a headache in managing and storing their products. The biggest advantage they gave them was to increase their efficiency and help them expand their business. In addition, bar code scanning technology is also more convenient for shoppers, because cashiers only need to scan the bar code, you can immediately understand the correct price.
In fact, the bar code revolution could reshape the entire retail industry. It makes management more efficient and provides useful insight into real-time inventory information and product requirements. As Steven Johnson wrote HowWeGottoNow in his book: "After decades of bar code scanning technology was introduced into the United States, we have witnessed an explosive growth in the size of retail stores." With the automation of inventory management , The shackles of bound epic hypermarkets have opened up the dominance of retail shopping, and the lack of bar code scanning, modern shopping methods such as Target, Best Buy and airport supermarkets can take a long time to emerge. "
The principle of bar code scanner system consists of scanner system, signal shaping, decoding three parts. The scanning system consists of an optical system and a detector, namely a photoelectric conversion device, which performs optical scanning of the bar code symbol and converts the light signal of the bar code stripe pattern into an electrical signal through a photodetector. Scanner signal frequency of tens of kilohertz to several hundred kilohertz, the general use of silicon photovoltaic cells, photodiodes, phototransistors as photoelectric conversion devices.
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Today, barcode scanning industry technology has been widely used in many fields and industries, such as the retail industry, manufacturing, logistics, medical, warehousing, security and our mobile phones and so on. There are ubiquitous QR code scanning technology is the same reason, the use of scanners can quickly and accurately identify information. Now many fast-food restaurants, such as KFC and McDonald's, are pioneering the use of two-dimensional code scanning electronic coupons instead of the previous e-coupons, to provide more convenience for consumers, but also for large-scale business promotion. It is foreseeable that the barcode / two-dimensional code scanner will be more convenient and more scientific in the future as it fully complies with the living habits of people under the fast pace of modern society and the functional materials of its core equipment will also play its role in the future Greater effect.