| With the sustained and rapid development of the social economy,the environmental problems faced by our country are getting more and more attention.To improve the level of environmental informatization and promote the application of emerging information technology in the field of environmental protection has become and will be the focus of environmental protection work in the long run.In order to meet the development requirements of the new era and manage the environment more efficiently,environmental protection departments and companies have developed many business application systems for environmental protection and accumulated a large amount of environmental data information.However,the acquisition,processing,storage,and application of these data information are not concentrated enough and lack of a standardized management mechanism,which results in the inefficient use of many information,and thus appeared the phenomenon of “information isolated islands” and “data chimney”.How to make full use of the IoT and embedded technologies to complete the perception and acquisition,processing and transmission,and analysis and integration of various environmental protection information,so as to meet the intelligent response to various business requirements,make environmental governance decisions more scientific is a top priority for environmental protection work.The rapid development of the industry for environmental informatization has prompted various kinds of old-fashioned devices for environmental protection to generate the demand for accessing environmental monitoring network,many of which are compliant with the Modbus protocol standard for serial communication.They are important for expanding the sources of environmental data.How to connect these environmental protection devices to the Internet effectively has become a key issue that needs to be resolved.The interconnected age of all things is coming,in order to avoid the gradual expansion of the equipment interconnection market in a disorderly state,a standardized management platform is necessary to deal with the difficulties of equipment deployment,system upgrade and reuse of infrastructure resources in the field of industrial IoT.Traditional industrial IoT gateways have the problems of single function,poor scalability,and difficulty in maintaining.How to design a more comprehensive IoT gateway and platform to meet the requirements of standardization for device interconnection in the field of environmental protection,and establish a unified platform for device interconnection and interoperability requires constant exploration and practice.In order to solve the above problems effectively,this dissertation makes a careful study of the overall framwork for environmental IoT and the key technologies of applications for smart environmental protection.Finally,it designs a new software architecture of IoT gateway for environmental protection,and based on this completes the research and practice of Software-defined device with smart single chip based on Zynq SoC.The smart gateway for environmental protection uses the Zynq-7000 series All Programmable SoC based on ARM+FPGA architecture as the master chip and uses the Xilinx Vivado IDE to complete the design of hardware system.It also uses the PetaLinux Tools that designed for SoC based on FPGA to complete BSP construction,and implements the access support for different types of environmental protection devices and intelligent interaction with the cloud service platform.The results of the final system evaluation show that the gateway is stable and reliable,support multiplatform data reporting,and has good scalability.The hardware and software design achieves the expected results,which verifies the feasibility and correctness of the software architecture of smart gateway for environmental protection. |
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