Abstract: Aiming to address the issues of high cost,slow speed,inability to recognize users,manual assistance,and lack of intelligence in existing intelligent weighing systems,we have designed and implemented a smart weighing and pricing system based on Radio-Frequency Identification (RFID) technology.This system can identify users by reading their unique RFID tags.It utilizes an HX711 module to sense the weight and transmit the data to an STM32 control module.The STM32,in turn,writes the weight information back to the RFID tags using an RFID card reader.The shopping information stored in the RFID tags is then read by the upper computer,which completes the pricing and printing process.Throughout this entire process,no human intervention is required for weighing and pricing to be accomplished.Experimental results demonstrate that the system can accurately identify users and can efficiently perform intelligent weighing and pricing tasks.

Key words: user identification, intelligent weighing, intelligent pricing, radio frequency identification, HX711, STM32