The bar code scanner we refer to is widely used in many areas of commercial POS cash register systems (supermarkets), pharmaceuticals, books or clothing. With the rapid development of the Internet of Things industry, bar code scanners have become a more common existence. For example, the QR code scanning on WeChat, which is very hot recently, can directly identify information with mobile phone cameras, and there are many catering businesses ( KFC, etc.) also launched QR code scanning electronic coupons, or some group purchase information (KTV group purchase, etc.), which can provide consumers with more convenience, not to mention major supermarkets or chain stores or Logistics and other industries, if you do not use bar code scanning instead of hand loss, then do not know how long the supermarket has to queue, reduce the number of orders. At present, our commercial bar code scanners are commonly used: full-angle laser scanners, CCD scanners and laser handheld scanners. When choosing, we usually pay attention to the following small points: 1. The probability of interpretation of each point tends to be consistent within a certain spatial range. 2. There are multiple parallel lines in one direction. 3. There are multiple points at a certain point. Scan line pass a. When selecting the full-angle laser scanner, pay attention to the distribution of the scanning line spots. The function is to effectively reduce the labor of the barcodes when the collectors enter the barcode data. Such scanners are expensive and generally choose the industrial sector. b. The biggest advantage of CCD scanner is that it is cheap, the mission life is long, and there is no shaft and motor. Most of them are used in ordinary supermarkets. The depth of field and resolution should be paid attention to when choosing. c. Laser hand-held scanners are mainly available in two types of shaker and mirror. The cost of the speculum type is lower than that of the mirror type, but the laser gun of this principle is not easy to increase the scanning speed, generally 33 times/second. The rotating mirror type is a high-speed motor that drives a prism group to rotate, so that the single-point laser emitted by the diode becomes a line. Business enterprises generally prefer a higher scanning speed and resolution than depth of field, but an excellent handheld laser scanner should have a high scanning speed and a high resolution in a fixed depth of field. Like a laser scanner, the price is slightly higher than that of a CCD scanner, and is generally used in applications where higher requirements are required. Based on the above content, I hope that people with purchase intentions will have a more accurate positioning for the purchase of barcode scanners. Face Massage Machine,Facial Beauty Machine,Ultrasound Face Machine,Electrical Facial Machines Guangzhou Lesen Xinpin Electronics Co.,Ltd , https://www.lesenxinpin.com