Method for maintaining function of sensor node oneself

Abstract

The invention relates to a method for self-maintaining the function of nodes of a sensor; with a gradual jumping mechanism, function updating codes are sent to each node of the network through a sensor network, thereby ensuring the reliability of the distribution of the functional updating codes. Through a delaminated structure of dividing a program memorizer of the nodes of the sensor into a microkernel region and a user program region, the self-function updating of the nodes of the sensor has greater flexibility and reliability. The method comprises the following steps: (1) the nodes of the sensor adopt the delaminated structure; the program memorizer is divided into the microkernel region and the user program region; the microkernel region is a fixed region; and the user program region is a nonupdatable region; (2) in the sensor network, a function upgrading code image is encapsulated into a data packet and injected to the network by a sink node; under the control of the microkernel region, the data packet is diffused in the whole network in a gradual jumping mode and sent to each node of the network; and (3) the nodes of the sensor utilize the delaminated structure to realize the self-function updating, thereby completing the self-maintenance of the function of the nodes. The delaminated structure put forward by the invention provides greater flexibility for the self-maintenance of the function of the nodes of the sensor and can ensure the reliability in the self-maintenance process.

Description

technical field [0001] The invention relates to a sensor node function self-maintenance method, which belongs to the field of wireless sensor network technology and embedded technology. Specifically, it is a method for enabling sensor nodes to dynamically update their own node codes in a wireless sensor network to achieve self-maintenance of their functions. Background technique [0002] A wireless sensor network consists of a large number of small, energy-constrained sensor nodes equipped with computing power and wireless communication capabilities. The high degree of autonomy of the sensor network makes it widely used in military, environmental detection and other dangerous or places where human intervention is impossible. In practical applications, wireless sensor networks must operate autonomously for long periods of time. This requirement raises two issues. First, it is impossible to predict the entire set of actions a sensor node may need to perform as time and the e...

AI Technical Summary

Problems solved by technology

Existing research considers self-maintenance of node functions from the perspective of network protocols. These methods lack flexibility in implementation. When sensor nodes need function updates, developers not only need to pay attention to the functions to be updated, but also need to update the nodes. I have a certain understanding of the old code, and I cannot separate the self-maintenance of the node function from the user program that realizes the node function.

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