| With the rapid economic development in recent decades,China’s railway system has made remarkable progress in operating mileage,scale under construction,operating speed and ride comfort,which puts forward higher requirements for the daily maintenance of Railway track.The Railway track logo is used to help staff quickly identify multiple track line parameters,and there are strict requirements for the standardization and neatness of the painting quality of the logo during the daily maintenance of the track.At present,manual spraying is often used in the process of track construction and maintenance,which results in poor spraying effect,low work efficiency,and high labor intensity.In order to improve the quality of rail marking spraying,improve work efficiency,and reduce labor intensity,this article proposes and designs a rail marking spraying system based on Internet of Things technology.In the article,a system solution plan is made based on the system requirements,dividing the entire system into two parts: the network part and the embedded end node.This article attempts to apply Internet of Things technology to track maintenance work during network design,in order to achieve file generation,management,and transmission.The research process first analyzes the functions of each subsystem contained in it through function diagram method,and then develops three software based on existing cloud server technology and My SQL database as the core,namely server side,mobile side,and computer side.The embedded end node part is composed of mobile software and embedded inkjet equipment.The mobile software can wirelessly control the embedded inkjet equipment.The embedded inkjet equipment serves as the execution terminal for the system’s inkjet operation.This article mainly completes the design of the embedded inkjet equipment control system.In the design,the key control algorithms involved in the operation process of embedded inkjet equipment,such as character dot matrix array generation,robotic arm trajectory planning,and fuzzy PID control,are first studied in detail.Based on this,a combination of software and hardware is used for the design.The hardware part uses the STM32F103 series microcontroller as the main control chip,ESP8266 as the WIFI chip,and OLED liquid crystal display screen as the human-machine interaction display part,Refer to the instruction set in the relevant design manual for hardware driver development.In the software part,Free RTOS system is used as the Real-time operating system of the device.According to the file content of the Real-time operating system,the task relationship of the Real-time operating system is designed.Through the Free RTOS system,each task is scheduled and managed to achieve multi Task parallelism and the normal operation of the inkjet device.Through theoretical design and practical software and hardware development,the design of a rail marking inkjet system based on Internet of Things technology was ultimately completed.The actual functional testing of the system shows that it can achieve the expected functions and various performance goals,with the network part being able to generate,store,send,and receive files;The embedded terminal node can smoothly achieve wireless control,that is,the mobile phone can send control signals according to the predetermined content,the embedded spraying device can receive the control signal,and complete functions such as running,stopping,and marking spraying according to the received signals. |
