Design of printer data senseless acquisition device

Under the strong impact of the Internet, the operation of traditional shopping malls has become more and more difficult and urgently needs to be reformed. What can help the reform of shopping malls is the massive sales data generated in the long-term operation. However, because the cashier systems of merchants are independent of each other, it is difficult for shopping malls to acquire and audit the sales data reported by merchants in a unified manner. Therefore, a printer data senseless acquisition device is designed and completed. Subsequently shopping malls can use the merchant sales data acquired by the device to collect rent and optimize the types of merchants. In this paper, without affecting any function and printing process of the cash register printer, a data acquisition device is connected in series between the cash register and the printer. The device is plug and play, compatible with USB ports and serial port micro printers. For a cash register, the device is simulated as a printer; for a printer, the device is simulated as a cash register, which completes adaptive simulation (without configuration) and transparent transmission functions and can realize network data transmission or SD card temporary storage.