Design Of Real-time Sound Level Meter Management System Based On μC/OS-Ⅲ

With the development of social economy and the improvement of people’s quality of life.The problem of environmental noise pollution has been paid more attention,simultaneously,noise measurement instrument has been promoted.More and more companies hope to improve their market competitiveness through exploit noise measurement management system in the demand of the sound level meter market.In this thesis,a real-time sound level meter management system is designed for the defect of low data management efficiency,single measurement function,complex operation and others which exist in traditional noise measurement instrument.The system combines a variety of modern technologies such as single-chip,virtual instrument,digital signal processing,real-time operating system transplantation.The system manages the application tasks through transplanting the latest real-time operating system,and realizes the functions of data receiving,data storage,interface display,key processing,serial communication and report printing.This thesis mainly introduces the concrete design process and implementation method of real-time sound level meter management system based on μC/OS-Ⅲ from the aspects of structural analysis,hardware design,task management and system testing of real-time sound level meter management system.First of all,this thesis summarizes the significance of noise measurement,and introduces the development of sound level meter.This thesis expounds the research significance of real-time sound level meter management system based on μC/OS-Ⅲ by analyzing the shortcomings of the existing sound level meter management system at home and abroad,and pointing out the source of the project and the main research content of this article,make arrangements for the structure of the chapters.Then it introduces the theory and working principle of acoustics,and the working principle of the real-time sound level meter,and analyzes the function of the management module,summarizes the overall plan of the real-time sound level meter management system design,and designs the real-time sound level management system according to its plan.Then,the circuit scheme of the measurement system based on STM32F407 +TMS320C6748 is presented,and the overall block diagram of the system is given.Next,explain the hardware design of the microphone module,man-machine interface module,data storage module,serial communication module and report printing module.After that we introduce the software environment developed by the system,introduce the transplant process of μC/OS-Ⅲ on STM32F407,and design the method based on μC/OS-Ⅲ software module.Finally,the management system is tested.The real-time sound level meter management system designed in this thesis is friendly and easy to operate,and the data management is effective and the system can run stably.