SEQUENCE-AWARE DATA STORAGE METHOD FOR EDGE DEVICES BASED ON BLOCKCHAIN

Using an array of devices and networks near the user, data from millions of interconnected sensors and devices can be processed in real-time. One of the main advantages of edge devices is that they require lower computational and processing power, can be deployed at the edge of the network, and thus have a lower memory. However, they rely heavily on edge platforms to collect and transmit data, so certain technologies need to be adopted to ensure their storage efficiency and security. A blockchain-based sequence-aware data storage method for edge devices was proposed in this paper. The method comprises the following steps: acquiring time sequence sensing data of an edge device in different States, and before the time sequence sensing data is subjected to state chain sequential storage, coding different States of the edge device by adopting One-Hot coding, and establishing a state storage block chain of the edge device in a corresponding state. Then comparing the current time sequence sensing data with the preorder time sequence sensing data, and when the state of the current time sequence sensing data is changed relative to the state of the preorder time sequence sensing data, pointing an uplink sensing block of a preorder state storage chain to a pointing block on a state chain corresponding to the current time sequence sensing data to complete the storage of the time sequence sensing data of the edge device. At present, the method described in this paper is used in the industrial tri-color light monitoring system and the tunnel support monitoring system. The engineering verification shows that this method can reduce the computing power consumption of the edge equipment, save storage space, and improve the security and reliability of the data.