Electronic scale based on NFC fast payment

Abstract

The invention discloses an electronic scale based on NFC fast payment. The electronic scale based on NFC fast payment comprises a micro-control chip, a display module, a weighing sensor, a chip of a radio frequency chip circuit, a matching circuit, a crystal oscillation circuit and a power unit. The micro-control chip is in data interaction with the chip of the radio frequency chip circuit through an SPI, the RX_IN1 and RX_IN2 of the micro-control chip serve as the input signal end of the chip of the radio frequency chip circuit, and the TX_OUT of the micro-control chip serves as the output signal end of the chip of the radio frequency chip circuit. The matching circuit is an RC circuit. A pin ANT1 and a pin ANT2 serve as external antenna interfaces. The crystal oscillation circuit is connected with the radio frequency chip circuit. The micro-control chip is connected with the display module and the weighing sensor through an I2C bus. The power unit is used for providing voltage for the micro-control chip and the chip of the radio frequency chip circuit. As an NFC payment unit is integrated inside the electronic scale, the electronic scale can achieve fast payment in the near field environment.

Description

technical field [0001] The invention belongs to the technical field of measurement and weighing, and in particular relates to the design of an electronic scale that can realize fast payment while weighing. Background technique [0002] The infiltration of electronic technology in the mid-1950s promoted the development of the weighing instrument manufacturing industry. Since the appearance of electromechanical integrated electronic weighing instruments in the early 1960s, after more than 40 years of continuous improvement and perfection, my country's electronic weighing instruments have developed from the initial electromechanical combination to the current full electronic scale. type and digital intelligence. The technical equipment and testing methods of electronic weighing instruments in my country have basically reached the international level in the mid-1990s, and electronic weighing technology has also developed from static weighing to dynamic weighing: measurement metho...

AI Technical Summary

Problems solved by technology

Under the existing technical conditions, in order to realize the function of NFC communication while weighing and pricing, it is necessary to purchase weighing and pricing equipment (electronic scales) with communication interfaces, NFC equipment (NFC reader) and computers, etc. equipment, and there is no electronic scale that can realize fast payment in the prior art, causing the user to complete the whole process of purchasing the product after completing the weighing of the product, and also need to go to another settlement department to complete the settlement, which brings to the buyer A certain amount of inconvenience also brings a certain amount of repetitive labor

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