| 英文摘要 |
The major work in this project is comprised of the following parts：
a. Sensing data collection, circulation and application
The containment of sensing data is continuous and uninterrupted, the data flow monitoring has improved and API and MQTT interface services are provided, which are provided in a unified format for analysis and use on the application side, reducing the complexity of data format arrangement on the application side, and can focus on data presentation and analyze.
b. Structural adjustment and performance improvement
Using the world standard static column - Apache Parquet - file structure to store real-time big data streams of the Internet of Things, reducing system I/O load, reducing storage space and effectively improving system performance and service levels.
c. Download center acceleration and enhanced UI/UX
Provide a new version of the download center unified process page to assist users to obtain raw data or the average result after automatic value-added calculations; store and provide downloads in static column files, reducing the burden on the data retrieval system and greatly improving user experience.
d. The optimization of sensor/device metadata and data quality management
The development of online daily complete rate sheet effectively collects the data uploading complete rate and records data abnormality of each county/city, and can provide the review authority to each county/city in the way of authority control, assisting the counties/cities to check the complete rate of uploaded data and health level. Moreover, to provide the visualized dashboard as reference of the device side and the analysis side.
e. Information security
With the cooperation of quarterly information security protection reports and repairing information security issues, we can effectively find the weaknesses of the system and make appropriate repairs to prevent the hack attack, or steal exclusive data in the system, and serve as a reference for subsequent development of new functions.
f. Maintenance and management of environmental sensing data center
Assist EPA in the maintenance and operation of the environmental sensing data center platform deployed in the Dong-chi machine room and Taichung Wen-shin machine room built by this project, and cooperate with the private cloud system(a0-iot) mentioned above to carry out information security control, system management, user account management, data storage operation processing and maintenance of normal operation.
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