Design And Research Of Integrated Meteorological Data Acquisition System Based On NB-IoT Communication

Accurate and timely meteorological information is the basis for realizing weather forecasting and meteorological sharing services,and is also a prerequisite for dealing with various sudden weather events.For a period of time,the use of modern information technology for meteorological data collection research has been a hot topic in the field of information and meteorological research.The large-scale deployment of the narrowband Internet of Things(NB-IoT)has brought new opportunities to the multi-element integrated meteorological data collection research of social development needs.Research on integrated meteorological data acquisition system based on NB-IoT communication will receive full attention.The integrated weather data acquisition system based on NB-IoT communication involves sensor application design,microcontroller programming,NB-IoT communication and security.This paper focuses on the technical architecture,main implementation methods,security issues and maintainable issues of the integrated meteorological data acquisition system(IMDAS).The main work is as follows:(1)Based on the hardware access,following the basic principles of embedded software engineering,the hardware component design and the underlying driver software component design based on component method are given,which provides the underlying foundation for IMDAS.The external interface of various sensors is unified on the hardware,which enhances the scalability of the hardware.On the underlying software,follow the principle of component packaging to enhance maintainability and portability.(2)Relying on the NB-IoT common technology application architecture,modeling IMDAS,and proposing the application framework of IMDAS based on NB-IoT communication,using the NB-IoT terminal communication component uecom developed by the laboratory and HCI communication with human-computer interaction system The component class HCIcom implements the data uplink and downlink process of IMDAS.On this basis,the software and hardware design and basic test of IMDAS are given.(3)For the security problem of meteorological data storage and shared access based on cloud platform,considering the problem that the terminal meteorological node is vulnerable to attack,insufficient resources and limited power consumption,an attribute-based cloud storage access is proposed.The efficiency of the encryption and decryption algorithm is improved while minimizing the computational overhead of the user,which is suitable for terminal devices with weak computing capabilities and limited resources.Furthermore,the verification algorithm ensures the correctness of the outsourcing calculation,and ensures the flexible and scalable access control strategy and the confidentiality and privacy protection of the user data during the resource sharing process.(4)Aiming at the maintenance and update of large-scale meteorological data acquisition nodes,a storage-optimized remote update scheme is proposed.It can overcome the high cost system maintenance problems brought by the on-site burning program and debugging update,realize the dynamic updateable configuration of the system,and adapt to the collection and monitoring of various meteorological information data sources in the area to be tested.The integrated meteorological data acquisition system presented in this paper builds a stable,portable and scalable acquisition terminal device based on the embedded system software and hardware component design idea.The practice shows its feasibility and effectiveness.The attribute-based cloud storage access control scheme presented in this paper demonstrates the effectiveness in IMDAS from both theoretical and practical perspectives;the remote update scheme given in this paper is an effective way to maintain and upgrade the IMDAS system.