RFID intelligent production is the use of novel, comprehensive, advanced, intelligent production management, through the Internet of things to collect data. RFID automatic induction acquisition technology to achieve material inventory, transportation, product detection, especially the production process control, optimize the efficient management of the entire production line. The application of RFID technology in production control realizes the visualization and intelligentization of production line. RFID opens a new chapter of intelligent manufacturing technology.

RFID opens a new chapter of intelligent manufacturing technology

In the traditional manufacturing industry, compared with the bar code technology that is widely used at present, RFID electronic tag has many essential advantages. The advantages of RFID electronic tags include: multiple tags can be read at the same time; Wireless remote reading and writing; Penetrable read and write; Can read and write at high speed; Storing more data information; It can be used in harsh environment. RFID technology is not only a simple replacement of bar code technology, its application in the manufacturing industry will change the production and management mode of manufacturing enterprises. RFID technology has been applied to supply chain management, warehouse management and material management in manufacturing industry.

The visualization of production line enables the management to discover the running state of the production line and the production line in real time. The system is mainly composed of assembly line, RFID data acquisition system, wIP and station. When the raw products move on the assembly line, the workers take off the recycled products for spare parts assembly after reaching the station, and then put them back on the assembly line until all procedures are completed. The system mainly consists of two fixed RFID readers. Every product in production is tagged with RFID.

RFID production management and control process: When the in-production product with RFID electronic tag passes through RFID reader A and RFID reader B in sequence, the RFID reader will read the RFID electronic tag information on the product and upload the data to the upper computer of the system, so as to judge the completion of the in-production product and the operation of each station. When the in-production product passes through THE RFID reader antenna A, but not through the RFID reader antenna B, it indicates that the production time of the tag bound product is too long and too much. The system will compare and give an alarm according to the preset time.

RFID opens a new chapter of intelligent manufacturing technology

In-production monitoring is to obtain the RFID electronic label data on the in-production product in real time to judge the work station of the in-production product and the completed process. Assuming that there are N processes in a production line of a production product, the monitoring method of the production status of the production product is as follows:

1. When the production product goes online, according to the manufacturing requirements of the in-production product, determine the number of processes N, and determine the sequence of work stations (123... N) Generate a binary code, so that it represents the completion state of the stations it passes through in the order from the lowest, the completion is 1, the unfinished becomes 0. When wIP goes online, its initial value is 0.

2. Write the code into the RFID electronic tag and bind it to the in-production product.

3. Modify the corresponding bit code every time the production product completes a process and leaves the station.

4, read the RFID electronic tag corresponding code, you can determine the completed process and the process is being completed.

The goal of production process control is to statically or dynamically determine the assembly route and assembly mode of in-production products according to the information of in-production products. Its basic principle is: after the real-time detection of in-production product information, route selection instructions and assembly prompts are generated according to the assembly route and assembly mode set by the control system. The system is mainly composed of RFID data acquisition system, station controller, kanban and path selection actuator.

The assembly route of wIP can be either a static route established before on-line or a dynamic route temporarily changed after on-line. Using the concept of "virtual production line", each in-production product is assigned a virtual production line. According to the assembly requirements of in-production products, virtual production lines are generated. Bind the in-production product code in the RFID electronic tag to the virtual production line, and then bind the tag to the in-production product. When multipath selection is carried out in production, the reader reads the in-production code in the label and determines the next station according to the information in the virtual production line. The advantage of the algorithm is that when the manufacturing process of in-process products needs to be changed, only the virtual production line and station relations stored in the controller need to be changed, which is convenient for dynamic control of assembly path.

In the field of intelligent manufacturing, RFID technology to achieve intelligent control of production process and traceability, production tracking and counting. In the manufacturing industry production line process management, so as to improve the workshop manufacturing process visualization and controllable level, increase the production efficiency of enterprises.