Research And Development Of Mobile Payment Terminal Based On WiFi/4G

With the rapid development of electronics and communication technologies,wireless mobile payment based on barcodes has been widely used,where two-dimensional codes play an important role,it plays a role in information collection,and it plays an important bridge between the Internet of things and e-commerce.You can see the QR code on the packaging bags of supermarket products,in express delivery,and in all aspects of our lives.The most popular ones today are the payment QR codes of Alipay and WeChat.WiFi and 4G are network carriers for wireless data transmission in mobile payments.This article has developed a mobile payment terminal based on WiFi/4G,which uses an AK3750C microcontroller as the main control chip in terms of hardware.Externally equipped with a camera collection module that collects payment barcode information,a keyboard module where users enter the amount to be collected,an LCD module that displays human-machine interaction information,a voice broadcast module that broadcasts relevant prompts,and a wireless communication module that communicates with a third-party server,WiFi With 4G modules and power modules.In terms of software,the development tool is an IAR integrated development environment.Modular programming is used to scan and recognize payment barcodes,wirelessly transmit the information in the barcode to a third-party server through 4G or WiFi module,and then receive the information returned by the server to complete the corresponding payment,broadcast voice and LCD display information.The mobile payment terminal based on WiFi/4G designed in this article has achieved the expected goal well,and has realized the functions of scan code payment,query order status,scan code refund,volume adjustment,keyboard input and LCD display.According to actual needs,the camera collection module of the mobile payment terminal is separated from the main control module,connected by a data line,and a main chip is used to control the camera module separately,and the main control chip communicates through a serial port.Therefore,it is convenient for some merchants with large partition walls or tables to collect money.The mobile payment terminal has the advantages of flexible operation,low cost,friendly interface and other advantages,and has a good market application prospect.