Monitoring System For Miscounting Of Package Yarn Based On Radio Frequency Identification

Winding,as an important process in the spinning process,plays a vital role in yarn quality control,reducing production costs and improving work efficiency.However,there is still no good solution to the problem of yarn miscounting in the winding production.With the application of informatization,intelligence,and unmanned management in the production workshop,the traditional method of manually recording yarn information It has been difficult to meet the requirements for precise yarn control.In the actual production process of the existing winder models,due to the fact that the operators in the winding production cannot check the information of each bobbin and the lack of performance of the winder itself to distinguish the type of yarn,this causes the yarn miscounting.The main cause of the problem.Based on the radio frequency identification technology,this subject has designed a yarn miscounting monitoring system applied to the winding machine.The electronic tag containing the yarn information is installed on the bobbin,and the electronic tag on the bobbin is completed through the reader and the host computer.Real-time reading,identification and judgment of information.The reader completes the reading of the yarn information of the electronic tag,and the upper computer can recognize the information of each bobbin in real time,realize the monitoring function of the yarn information,and fundamentally prevent the occurrence of yarn miscounting problems.In this paper,the yarn miscounting monitoring system is designed.First,the frequency band of the monitoring system is selected.According to the selected RFID system frequency band,antenna shape,electronic tags,and reading and writing equipment,the analysis,design and selection are carried out to determine the antenna parameters,The installation location of tags and read-write modules provide preparations for the actual application of the monitoring system.In order to ensure the reliability of the monitoring system,the application of RFID technology in the two frequency bands of high frequency and ultra-high frequency in the system was studied,and the application of RFID technology in different frequency bands on the winding machine was determined.The label is installed on the bobbin,the yarn number,production machine,production date,shift and other parameters are stored in the electronic label,and these production data are collected through the reader installed on the winder.In the design of the monitoring system,three methods of yarn miscounting monitoring are designed,namely the research of ultra-high frequency RFID in the monitoring system,the research of high-frequency RFID in the monitoring system,and the multi-channel high-frequency RFID antenna in the system.In the application.In the process of system design,from the two aspects of system hardware selection and installation,and system read performance,the influence factors of system performance and system optimization are carried out.The experimental results show that: in the application of ultra-high frequency band RFID in the monitoring system,the best installation position of the tag and the reading and writing module has been found.The distance between the reader and the yarn tube is 5 cm,the power is 28 d Bm,and the system can achieve electronic control.Good reading,the different installation positions of the electronic tags change the reading performance of the reader.The reader is installed in the winder and is affected by the metal environment,making the reading rate lower than in an open environment.Secondly,completed the research on the application of high-frequency RFID in the monitoring system,and simulated and analyzed the two antennas with different shapes in the system.After comparison,the hollow antenna with a circular antenna shape was selected,and the antenna was installed on the read-write module.Debugging of the application,found the best installation position of the antenna,and carried out a reading experiment on the installation of the antenna on the winder.The results show that the maximum reading distance of the reader module to the electronic tag installed on the bobbin is 3.0 cm,when the angle between the antenna and the tag is 0°,the antenna has better reading performance under the same circumstances.Finally,the application design of the multi-channel reading and writing module in the monitoring system is completed,and the reader antenna that matches it is designed according to the type of the reading and writing module.The antenna test after debugging has found that the maximum reading of the label on the bobbin is Take the distance as 5.5 cm.Use C++ language to write a program that can be applied to the Windows system to judge yarn information,debug and test the judgment function of the software.The experimental results show that when the distance between the reader and the label is not more than 2.5 cm,the reading The reader achieves a good reading effect on the electronics on the bobbin.When the distance between the reader and the tag exceeds 2.5 cm,the phenomenon of missing reading will occur.After the antenna is normally installed,it is found that the system recognizes the wrong yarn.At the same time,it also has a good recognition effect for the abnormal label on the yarn tube.