Power Internet of Things wireless sensor time synchronization system and method

Abstract

The invention discloses a power Internet of Things wireless sensor time synchronization system and method. The system comprises a root wireless sensor, at least two secondary root wireless sensors and a plurality of wireless sensors; the secondary root wireless sensors are used for sending a grouping starting message to the plurality of wireless sensors, the plurality of wireless sensors are grouped according to the grouping starting message, and each group of wireless sensors respectively correspond to each secondary root wireless sensor; the root wireless sensor is used for sending a synchronous broadcast signal to the secondary root wireless sensors, and the secondary root wireless sensors are used for recording the arrival time of the synchronous broadcast signal according to the local time of the secondary root wireless sensor and sending the arrival time to other secondary root wireless sensors; each secondary root wireless sensor adjusts the clock of the secondary root wireless sensor according to the received arrival time; each group of wireless sensors is used for carrying out bidirectional message exchange with the corresponding secondary root wireless sensor so as to realize time synchronization; and according to the method, the synchronization precision and the algorithm power consumption can be well balanced.

Description

technical field [0001] The invention relates to the field of electric power technology, and in particular, to a time synchronization system and method for wireless sensors of the Internet of Things in electric power. Background technique [0002] In recent years, with the rapid development of science and technology, the construction of the power Internet of Things is also steadily advancing. As a key hub for integrating multi-source information such as power grid information, user information, and external information, wireless sensors are gradually receiving applications and research. Pay attention to. [0003] In the actual application process, many wireless sensors in the power Internet of Things need to use a unified time reference and accurate time labeling to ensure efficient information fusion applications and ensure the quality of information data. At the same time, the monitoring and control of the power Internet of Things is not limited to local, but also wide-are...

AI Technical Summary

Problems solved by technology

When this time synchronization method is used for time synchronization, the accuracy of the synchronization depends on the correctness of each link of time transfer. There are many transfer links and there is a large synchronization error.

In addition, this time synchronization method involves many interactive computing nodes and complex algorithms, which cannot meet the low power consumption requirements of power Internet of Things devices, and its consumption in the time synchronization process is too large and the cost is too high

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