The automatic bucket filling scale collects the weight of the bucket identity data for the upper computer database to identify the bucket identity and size. It is composed of inductive coils and other components. It receives signals from the reader through an external circuit, processes them through the internal power circuit of the chip to provide power to the chip, and through the damping load inside the chip, the data is read into the reader and then recorded to the server. The appropriate part of the barrel is affixed with an electronic tag. When the barrel is placed on the weighing platform, aim the card reader at the part of the electronic tag, start the card reader to read the ID code of the electronic tag, then take out the ID number of the bottle body from the card reader and upload it to the single-chip microcomputer. The single-chip microcomputer then upload this data to the upper computer to enter the gas cylinder information database. The ID number is queried and compared in the database, and a code is returned to the single-chip microcomputer at the same time. On the one hand, the single-chip microcomputer returns a signal to the card reader to turn it off; on the other hand, it performs the relevant control operations of gas filling according to the program Settings.

The weighing and Filling machine mainly accomplishes functions such as data collection, transmission, processing, and device control. It receives the ID data sent by the card reader in a certain data agreement format and uploads it to the upper-level computer database for query and comparison in the machine database. The database returns a code to the single-chip microcomputer. The single-chip microcomputer judges and processes the code returned by the machine. If it is a valid code, it sends a close signal to the card reader. At the same time, wait for the data input by the on-site workers from the on-site operation panel, such as serial numbers, employee numbers, passwords, etc. After the single-chip microcomputer acquires these data, it uploids them to the relevant database of the machine. After the single-chip microcomputer receives the confirmation information from the machine, it issues a filling instruction, which drives the amplification circuit to open the large and small solenoid valves to start filling. During the filling process, the single-chip microcomputer acquires the weight data of the weighing platform in real time and makes judgments. When the weight value set by the program is reached, the single-chip microcomputer successively issues instructions to close the large and small solenoid valves to stop this filling work.