The application of barcode technology is a necessary means to achieve modern management, and its superiority is well known. No matter how the industrial field develops, barcode is the only way to realize industrial automation. With the development of domestic industrial technology, many factories have implemented barcode sales management, inventory management and production process management. \x0d\\x0d\1 Barcode and Barcode System Barcode technology \x0d\ is to represent the data required by the computer with a barcode, and then convert the barcode data into data that the computer can automatically read. Barcode technology includes barcode compilation rules, barcode decoding technology, barcode printing technology, data communication technology and computer technology, etc. It is a comprehensive technology. Any kind of barcode is composed of a combination of bars and spaces in accordance with predetermined barcode encoding rules and relevant technical standards. So far, there are more than forty barcode systems in the world. Generally, cross 25 codes can be used in logistics management. Its characteristics are that symbols occupy small space and have high information density. Based on the data structure represented by the barcode symbol and the type of data that can be encoded, we chose the cross-digit 25 code in the production of air conditioners. The calculation method of barcode check digit: weight the barcode data according to the cycle of one and three, and then subtract the single digit of the sum from 10. The resulting value is the check data of the last digit of the barcode. \x0d\\x0d\2 Barcode printing\x0d\ We use the M4800 thermal transfer barcode printer from Japan SATO Company, with a printing speed of 125mm/s. Its format is flexible, the image quality is high, the printing cost is low, and it is easy to use. It is reliable and has a low failure rate. The disadvantage is that this type of printer is slightly slower. It completes barcode printing under the control of a microcomputer. We configured a Japanese NECPC980INS/E20 laptop computer (with 20M hard drive, 40M memory). Barcode software is generally compiled in BASIC language, which is relatively simple. Considering the printer's ability to process Chinese characters, it is best to use a barcode printer that can process the secondary Chinese character library through an ordinary microcomputer driver. On the barcode label, in addition to the barcode , it should also include some necessary information, such as the manufacturer's trademark nameplate, etc., which can also be completed by the manufacturer of the self-adhesive barcode paper tape on the printing carrier in advance. \x0d\\x0d\3Barcode recognition\x0d\Barcode recognition is done through a barcode reader, which can be divided into a photoelectric scanner and a decoder, which are usually combined together. The MS720 reader of the American METROLOGIC company is an online laser scanning reader with a scanning speed of 2000 lines/second and a reliable scanning distance within an area of ??7 to 15 inches. There are 20 laser scanning lines in the scanning area, divided into five Scan the barcode in any direction and communicate with the computer through the RS-232 interface. Use the DIP switch to select 12 barcode encoding systems. The task of the decoder is to convert the signal generated by the scanner into data that can be recognized by the computer according to a certain bar code decoding principle, and then transmit it to the computer. The decoder function is usually implemented by a microprocessor running corresponding software. Only new barcode readers must be initialized and programmed according to the code system selected by the user: set the barcode code system → data transmission rate → barcode character length → define parity bit → barcode reader and computer interface type, etc. The decoder can only recognize the barcode symbology selected by the user after initial programming. Usually the barcode reader is connected to a microcomputer or to a computer terminal, and its output is simply connected to the parallel interface or RS-232 serial port on the microcomputer or terminal. \x0d\\x0d\4 Barcode Verification\x0d\ In order to ensure the printing quality of barcodes, the printed barcodes should be verified regularly. Generally, it is enough to prepare a light pen barcode scanner.

For example, the TBR-1100 or THS-21S model can already meet the requirements. If conditions permit, a high-end barcode inspection machine such as the CODEBAR II model can be further prepared: the light source wavelength is 633mm (red light)/900mm (infrared light), with a resolution of 25μm. The measurement accuracy is ±75μm, the reflectivity measurement range is 0~100, and the accuracy is ±2. If it is coupled with a TP-32 printer, a complete barcode detection report can be obtained. 5. The composition of the barcode application system (see the figure) 6. Some experiences in the application of barcode technology Since 1994, we have taken the lead in using barcodes in the production of air conditioners and achieved one-time success. Over the past few years, we have accumulated some experience in promotion and application, mainly including the following points:\x0d\\x0d\①The importance of popularizing barcode knowledge. In the promotion and use, it is necessary to make the management and operation level personnel understand barcodes. The principle of why barcode technology should be applied and the role of barcodes in computer systems. The efficiency that applying barcode technology will bring to production management and quality management enables everyone to pay attention to this work ideologically. \x0d\②The application of barcodes must be closely coordinated by various departments. The application of barcodes involves multiple links such as product numbering, barcode printing, barcode pasting, and barcode scanning. It must be completed by the division of labor of the production department, quality inspection department, and equipment department. Generally, product barcodes are printed centrally. The specific printing quantity and pasting can be completed by the production workshop. Special personnel should be designated for operation and maintenance, and technical training should be provided to them. Barcode scanning is completed by the quality inspection department. When barcode information is wrong, it needs to be dealt with in a timely manner, which requires coordination and full support from upper-level leaders. \x0d\③Using barcodes to carry out effective management through computer systems is the key to applying barcode technology. The purpose of applying barcode technology for management is to ensure the rapid and accurate input of product information to prevent loopholes caused by manual input, and To provide managers with various data on each product, we use barcode technology in air conditioner product inspection to establish a pre-factory quality file for each product, effectively providing various information. \x0d\④ Formulate rules and regulations for barcode management. The application of barcodes must follow certain rules and be consistent with their scientific nature. Establish the entire product coding system, internal barcode generation rules, barcode printing system, barcode pasting specifications, product use barcode system, And the barcode utilization rate in the production workshop is evaluated as an economic and technical indicator.