The Research of an On-demand Threaded Interrupt Technology of Serial Port Based on the Power Edge Smart Device

• Published in: Journal of physics. Conference series 2021-02, Vol.1828 (1), p.12091
• Main Authors: She, Wenkui, Yang, Fan, Wang, Shuang, Li, Yuanyu
• Format: Article
• Language: English
• Subjects: Cloud computing; Edge computing; Electric potential; Electric power distribution; Electronic devices; Microprocessors; Physics; Real time; Time response; Voltage
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1828/1/012091

At present, the common problems facing the low-voltage power distribution system lie in plenty of equipment and wide range of power distribution. In order to address these problems, the overall architecture of the cloud-pipe-side-end is introduced through the IoT system in electric power distribution, where the end device is connected to the low-voltage power distribution system via the serial bus of the edge device and carries on data collection and real-time edge computing. As the core node, the edge device is required to have excellent real-time capability of timely detection and real-time response to the fault of various low-voltage power distribution facilities. In consideration of this, this paper proposes an on-demand serial port interrupt threading design to ensure the real-time performance of an electrical edge smart system. According to the experimental results, as the number and load of serial port devices increase, the real-time task dispatching rate continues to decline until the transformation, and the impact on the real-time task dispatching rate is limited after the threaded interrupt. That is to say, the method is effective in ensuring the dispatching rate of real-time tasks for the edge smart terminals.