Study On The Car Barcode Identification And Check System Based On PLC

Automobile is one of the most important vehicle in morden society, and its safety is essential for the customer, which is usually guaranteed through the front airbag and the seat airbag. This design, the production line monitoring system based on the barcode technology, is an application of automatic identification technology in industry, which aim is to improve the productivity and quality of the assembly line of automobile. This paper provides the detailed information of this design, the system of the automobile seat barcode creation and verification, and its main content includes:The collection of the seat barcode raw data:the seat barcode in this project includes the data from two parts: the data related to the seat board and the air bag. In the working process, the data is collected by the reader and transferred to PLC through serial port. The data collection must be in the right order, otherwise the system will make alarm, no matter missing data or disordering data.The creation of seat barcode: firstly, the data of every part of the seat will be inputted to the PLC through scanner. In the PLC, the data of two parts will be encod on the processing application of 39 yards systematically. Finally, the PLC will creat a barcode to express the parts of seat.The verification of seat barcode: the Barcode created in the process and the seat is one-to-one correspondence. Scanning the barcode after production and comparing the data from the scan and the data from the production line, the qualication of the seat and air bag can be verified.The processingof dates in PC: connnecting PC and PLC, the program also has a realtime monitoring software based on MCGS. It can monitor the engineering status, data sheet, alarm, and reports etc. This helps to data analysis and process by the operator.This design, the system for seat barcode creation and verification, has been run on the production line. The data collected is accurate, and the system was ran stable and automatically, satisfying the customer.